{"version":3,"sources":["./node_modules/@angular/cdk/__ivy_ngcc__/fesm2015/collections.js","./node_modules/@angular/cdk/fesm2015/coercion.js","./node_modules/@angular/cdk/__ivy_ngcc__/fesm2015/keycodes.js","./node_modules/@angular/cdk/__ivy_ngcc__/fesm2015/observers.js","./node_modules/@angular/cdk/__ivy_ngcc__/fesm2015/bidi.js","./node_modules/@angular/cdk/__ivy_ngcc__/fesm2015/platform.js","./node_modules/@angular/cdk/__ivy_ngcc__/fesm2015/a11y.js","./node_modules/@angular/cdk/__ivy_ngcc__/fesm2015/scrolling.js"],"names":[],"mappings":";;;;;;;;;;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAiD;AACb;AACuB;;AAE3D;AACA;AACA;AACA;AACA;AACA;AACA;AACwC;AACxC;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,eAAe,yDAAY,4BAA4B,+CAAE;AACzD;AACA,kBAAkB;AAClB;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,IAAI,uBAAuB;AAC3B;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,iBAAiB;AACjB;AACA,SAAS;AACT;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,IAAI,uBAAuB;AAC3B;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,+CAA+C;AAC/C;AACA;AACA;AACA;AACA,4CAA4C;AAC5C;AACA;AACA;AACA,kBAAkB;AAClB;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,iBAAiB;AACjB;AACA,SAAS;AACT;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,2BAA2B,4CAAO;AAClC;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,aAAa;AACb;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,aAAa;AACb;AACA;AACA;AACA;AACA;AACA;AACA,gFAAgF,+CAA+C;AAC/H,kCAAkC,gEAAqB,EAAE,wDAAwD,wCAAwC,EAAE,wDAAwD;AACnN,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,wDAAU;AACxB,gBAAgB,qBAAqB;AACrC,KAAK,gBAAgB,WAAW,EAAE,QAAQ,EAAE;;AAE5C;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,wBAAwB,oBAAoB;AAC5C;AACA;AACA,oCAAoC,4DAAc;;AAElD;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;;AAE8N;;AAE9N,uC;;;;;;;;;;;;ACvdA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAA2C;;AAE3C;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,+BAA+B,MAAM;AACrC;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,kDAAkD,MAAM;AACxD;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,mCAAmC,wDAAU;AAC7C;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,iBAAiB;AACjB,mBAAmB;AACnB,6BAA6B;AAC7B,wBAAwB;AACxB,QAAQ,OAAO,QAAQ;AACvB,OAAO,OAAO,OAAO;AACrB;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,+DAA+D,MAAM;AACrE;AACA,qCAAqC,YAAY;AACjD;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;;AAE2I;AAC3I;;;;;;;;;;;;;ACnIA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,wBAAwB;AACxB,qBAAqB;AACrB;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,gBAAgB;AAChB;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,iBAAiB;AACjB,wBAAwB;AACxB,sBAAsB;AACtB;AACA;AACA;AACA;AACA,sBAAsB;AACtB,mBAAmB;AACnB;AACA,iBAAiB;AACjB;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;;AAEq/B;;AAEr/B,oC;;;;;;;;;;;;AC/JA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAmG;AAC/D;AAC6E;AACtE;AACG;;AAE9C;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACwC;AACxC;AACA;AACA;AACA;AACA;AACA,4EAA4E,6CAA6C;AACzH,gCAAgC,gEAAqB,EAAE,sDAAsD,sCAAsC,EAAE,sDAAsD;AAC3M,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,wDAAU;AACxB,gBAAgB,qBAAqB;AACrC,KAAK,eAAe,EAAE;AACtB;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,wBAAwB,2EAAa;AACrC,mBAAmB,+CAAU;AAC7B;AACA;AACA;AACA;AACA;AACA;AACA,SAAS;AACT;AACA;AACA;AACA;AACA;AACA;AACA;AACA,+BAA+B,4CAAO;AACtC;AACA;AACA;AACA;AACA;AACA;AACA,iBAAiB;AACjB;AACA,iDAAiD,6BAA6B;AAC9E;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,mBAAmB,mBAAmB;AACtC;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,4DAA4D,mCAAmC,sDAAe,2BAA2B;AACzI,wBAAwB,gEAAqB,EAAE,8CAA8C,4BAA4B,sDAAW,2BAA2B,EAAE,8CAA8C;AAC/M;AACA,KAAK;AACL;AACA,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,wDAAU;AACxB,gBAAgB,qBAAqB;AACrC,KAAK,gBAAgB,UAAU,gCAAgC,EAAE,EAAE,QAAQ,EAAE;AAC7E;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,yBAAyB,0DAAY;AACrC;AACA;AACA;AACA;AACA;AACA;AACA;AACA,oBAAoB,uBAAuB;AAC3C;AACA,yBAAyB,mFAAqB;AAC9C;AACA;AACA;AACA,oBAAoB,uBAAuB;AAC3C;AACA,yBAAyB,kFAAoB;AAC7C;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,6CAA6C,mEAAY;AACzD,SAAS;AACT;AACA;AACA;AACA;AACA;AACA;AACA,gEAAgE,qCAAqC,+DAAwB,mBAAmB,+DAAwB,CAAC,wDAAiB,GAAG,+DAAwB,CAAC,oDAAa,GAAG;AACtO,yBAAyB,+DAAwB,EAAE,+EAA+E,4EAA4E,YAAY,6BAA6B,mCAAmC;AAC1R;AACA,KAAK,wBAAwB;AAC7B,KAAK,OAAO,wDAAU,EAAE;AACxB,KAAK,OAAO,oDAAM;AAClB;AACA;AACA,aAAa,OAAO,oDAAM,gCAAgC;AAC1D,gBAAgB,OAAO,mDAAK,wCAAwC;AACpE,gBAAgB,OAAO,mDAAK,EAAE;AAC9B;AACA,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,uDAAS;AACvB;AACA;AACA;AACA,aAAa;AACb,KAAK,gBAAgB,UAAU,wBAAwB,GAAG,OAAO,wDAAiB,EAAE,GAAG,OAAO,oDAAa,EAAE,EAAE,EAAE,GAAG;AACpH,kBAAkB,oDAAM;AACxB;AACA,SAAS;AACT,kBAAkB,mDAAK;AACvB;AACA,SAAS;AACT,kBAAkB,mDAAK;AACvB,SAAS,GAAG,EAAE,EAAE;AAChB;AACA;AACA,uBAAuB,8DAAuB,EAAE,wBAAwB;AACxE,uBAAuB,8DAAuB,EAAE,+CAA+C,qCAAqC,EAAE,wCAAwC;AAC9K,cAAc,oDAAoD,gEAAyB,mBAAmB,kEAAkE,EAAE,EAAE;AACpL,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,sDAAQ;AACtB;AACA;AACA;AACA;AACA,aAAa;AACb,KAAK,eAAe,EAAE;;AAEtB;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;;AAEwF;;AAExF,qC;;;;;;;;;;;;ACtNA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAoC;AACmG;AAC5F;;AAE3C;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACwC;AACxC,yBAAyB,4DAAc;AACvC;AACA;AACA,CAAC;AACD;AACA;AACA,WAAW,4DAAM,CAAC,wDAAQ;AAC1B;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,0BAA0B,0DAAY;AACtC;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,0DAA0D,kCAAkC,sDAAe,mBAAmB;AAC9H,uBAAuB,gEAAqB,EAAE,6CAA6C,2BAA2B,sDAAW,mBAAmB,EAAE,6CAA6C;AACnM;AACA,KAAK,gCAAgC,OAAO,sDAAQ,EAAE,GAAG,OAAO,oDAAM,yBAAyB;AAC/F;AACA,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,wDAAU;AACxB,gBAAgB,qBAAqB;AACrC,KAAK,gBAAgB,UAAU;AAC/B,sBAAsB,sDAAQ;AAC9B,aAAa;AACb,sBAAsB,oDAAM;AAC5B;AACA,aAAa,GAAG,EAAE,EAAE,QAAQ,EAAE;;AAE9B;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,0BAA0B,0DAAY;AACtC;AACA;AACA,eAAe,kBAAkB;AACjC;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,iBAAiB,iBAAiB;AAClC;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,oCAAoC,yBAAyB;AAC7D,WAAW,+DAAwB,EAAE,yGAAyG;AAC9I,QAAQ,yDAAkB;AAC1B,KAAK,EAAE,WAAW,aAAa,YAAY,sBAAsB,gCAAgC,gEAAyB,GAAG,4CAA4C,KAAK;AAC9K;AACA,cAAc,OAAO,oDAAM,wBAAwB;AACnD,WAAW,OAAO,mDAAK,EAAE;AACzB;AACA,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,uDAAS;AACvB;AACA;AACA,6BAA6B,4CAA4C;AACzE,uBAAuB,0BAA0B;AACjD;AACA,aAAa;AACb,KAAK,gBAAgB,WAAW,EAAE,GAAG;AACrC,kBAAkB,oDAAM;AACxB;AACA,SAAS;AACT,kBAAkB,mDAAK;AACvB,SAAS,GAAG,EAAE,EAAE;;AAEhB;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,kBAAkB,8DAAuB,EAAE,mBAAmB;AAC9D,kBAAkB,8DAAuB,EAAE,0CAA0C,gCAAgC,EAAE,EAAE;AACzH,cAAc,oDAAoD,gEAAyB,cAAc,sCAAsC,EAAE,EAAE;AACnJ,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,sDAAQ;AACtB;AACA;AACA;AACA,aAAa;AACb,KAAK,eAAe,EAAE;;AAEtB;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;;AAEwH;;AAExH,gC;;;;;;;;;;;;ACvLA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAoC;AACsC;AACtB;;AAEpD;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACwC;AACxC;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,YAAY,yEAAiB;AAC7B;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,8CAA8C,4BAA4B,sDAAe,CAAC,yDAAW,GAAG;AACxG,iBAAiB,gEAAqB,EAAE,uCAAuC,qBAAqB,sDAAW,CAAC,yDAAc,GAAG,EAAE,uCAAuC;AAC1K;AACA,KAAK,6BAA6B,OAAO,oDAAM,SAAS,yDAAW,IAAI;AACvE;AACA,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,wDAAU;AACxB,gBAAgB,qBAAqB;AACrC,KAAK,gBAAgB,UAAU;AAC/B,sBAAsB,oDAAM;AAC5B,uBAAuB,yDAAW;AAClC,aAAa,GAAG,EAAE,EAAE,QAAQ,EAAE;;AAE9B;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,sBAAsB,8DAAuB,EAAE,uBAAuB;AACtE,sBAAsB,8DAAuB,EAAE,8CAA8C,oCAAoC,EAAE,EAAE;AACrI,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,sDAAQ;AACtB,iBAAiB;AACjB,KAAK,eAAe,EAAE;;AAEtB;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,KAAK;AACL;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,0EAA0E;AAC1E;AACA,aAAa;AACb;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,8CAA8C,uBAAuB;AACr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kQ;;AAElQ,oC;;;;;;;;;;;;AC3VA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAsC;AACK;AACP;AAC0H;AAC5F;AAC2G;AAChE;AAChC;AACjC;AAC0H;AAC5F;;AAE1E;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACwC;AACQ;AACC;AACjD;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,sCAAsC,6CAA6C;AACnF;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,sEAAsE,+BAA+B;AACrG,uBAAuB,8BAA8B;AACrD;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,oDAAoD,oCAAoC;AACxF;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,yDAAyD,QAAQ;AACjE;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,wDAAwD,iCAAiC,sDAAe,CAAC,wDAAQ,GAAG;AACpH,sBAAsB,gEAAqB,EAAE,4CAA4C,0BAA0B,sDAAW,CAAC,wDAAW,GAAG,EAAE,4CAA4C;AAC3L;AACA,KAAK,gCAAgC,OAAO,oDAAM,SAAS,wDAAQ,IAAI;AACvE;AACA,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,wDAAU;AACxB,gBAAgB,qBAAqB;AACrC,KAAK,gBAAgB,UAAU;AAC/B,sBAAsB,oDAAM;AAC5B,uBAAuB,wDAAQ;AAC/B,aAAa,GAAG,EAAE,EAAE,QAAQ,EAAE;AAC9B;AACA;AACA,4CAA4C,WAAW,GAAG,QAAQ;AAClE;AACA;AACA;AACA;AACA,wBAAwB,0BAA0B,GAAG,SAAS;AAC9D;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,oCAAoC,4CAAO;AAC3C,sCAAsC,iDAAY;AAClD;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,0BAA0B,4CAAO;AACjC;AACA,0BAA0B,4CAAO;AACjC;AACA;AACA;AACA,8BAA8B,uDAAS;AACvC;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,aAAa;AACb;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,iEAAiE,0DAAG,+CAA+C,mEAAY,oBAAoB,6DAAM,yCAAyC,0DAAG;AACrM;AACA;AACA;AACA,2BAA2B,sBAAsB;AACjD;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,SAAS;AACT;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,SAAS;AACT;AACA,iBAAiB,yDAAG;AACpB;AACA;AACA,iBAAiB,gEAAU;AAC3B;AACA;AACA;AACA;AACA;AACA;AACA;AACA,iBAAiB,8DAAQ;AACzB;AACA;AACA;AACA;AACA;AACA;AACA;AACA,iBAAiB,iEAAW;AAC5B;AACA;AACA;AACA;AACA;AACA;AACA;AACA,iBAAiB,gEAAU;AAC3B;AACA;AACA;AACA;AACA;AACA;AACA;AACA,iBAAiB,0DAAI;AACrB;AACA;AACA;AACA;AACA;AACA;AACA;AACA,iBAAiB,yDAAG;AACpB;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,yCAAyC,4EAAc;AACvD;AACA;AACA;AACA;AACA;AACA,yCAAyC,uDAAC,eAAe,uDAAC,iBAAiB,0DAAI,eAAe,0DAAI;AAClG;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,uBAAuB,mBAAmB;AAC1C;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,sCAAsC,u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sEAAsE,wCAAwC,sDAAe,CAAC,8DAAe,GAAG;AAChJ,6BAA6B,gEAAqB,EAAE,mDAAmD,iCAAiC,sDAAW,CAAC,8DAAW,GAAG,EAAE,mDAAmD;AACvN;AACA,KAAK,OAAO,8DAAQ;AACpB;AACA,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,wDAAU;AACxB,gBAAgB,qBAAqB;AACrC,KAAK,gBAAgB,UAAU,OAAO,8DAAe,EAAE,EAAE,EAAE,QAAQ,EAAE;AACr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mBAAmB,sBAAsB;AACz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hF,8BAA8B,MAAM;AACpC,0BAA0B,MAAM;AAChC,uBAAuB,oBAAoB;AAC3C;AACA,qDAAqD,MAAM;AAC3D,6EAA6E,MAAM;AACnF,0CAA0C,MAAM;AAChD;AACA;AACA,iEAAiE,MAAM;AACvE,oFAAoF,MAAM;AAC1F,0CAA0C,MAAM;AAChD;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,uBAAuB,qBAAqB;AAC5C;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,yCAAyC,QAAQ;AACjD;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,uCAAuC,2DAAI;AAC3C;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,8DAA8D,oCAAoC,sDAAe,wBAAwB,sDAAe,CAAC,oDAAa,GAAG,sDAAe,CAAC,wDAAQ,GAAG;AACpM,yBAAyB,gEAAqB,EAAE,+CAA+C,6BAA6B,sDAAW,wBAAwB,sDAAW,CAAC,oDAAS,GAAG,sDAAW,CAAC,wDAAW,GAAG,EAAE,+CAA+C;AAClQ;AACA,KAAK,6BAA6B;AAClC,KAAK,OAAO,oDAAM,EAAE;AACpB,KAAK,gCAAgC,OAAO,oDAAM,SAAS,wDAAQ,IAAI;AACvE;AACA,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,wDAAU;AACxB,gBAAgB,qBAAqB;AACrC,KAAK,gBAAgB,UAAU,6BAA6B,GAAG,OAAO,oDAAa,EAAE,GAAG;AACxF,sBAAsB,oDAAM;AAC5B,uBAAuB,wDAAQ;AAC/B,aAAa,GAAG,EAAE,EAAE,QAAQ,EAAE;AAC9B;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,mBAAmB,+BAA+B;AAClD,wBAAwB,0BAA0B,mFAAqB,QAAQ;AAC/E;AACA;AACA;AACA;AACA,uBAAuB,0BAA0B;AACjD,4BAA4B,qBAAqB,mFAAqB,QAAQ;AAC9E;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,yCAAyC,+FAAiC;AAC1E;AACA;AACA;AACA,sDAAsD,gCAAgC,+DAAwB,CAAC,wDAAiB,GAAG,+DAAwB,oBAAoB,+DAAwB,CAAC,wDAAQ,GAAG;AACnN,oBAAoB,+DAAwB,EAAE,qEAAqE,gGAAgG,yCAAyC,kEAA2B,GAAG;AAC1R;AACA,KAAK,OAAO,wDAAU,EAAE;AACxB,KAAK,yBAAyB;AAC9B,KAAK,gCAAgC,OAAO,oDAAM,SAAS,wDAAQ,IAAI;AACvE;AACA;AACA,eAAe,OAAO,mDAAK,2BAA2B;AACtD,mBAAmB,OAAO,mDAAK,sCAAsC;AACrE;AACA,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,uDAAS;AACvB;AACA;AACA;AACA,aAAa;AACb,KAAK,gBAAgB,UAAU,OAAO,wDAAiB,EAAE,GAAG,yBAAyB,GAAG;AACxF,sBAAsB,oDAAM;AAC5B,uBAAuB,wDAAQ;AAC/B,aAAa,GAAG,EAAE,EAAE,GAAG;AACvB,kBAAkB,mDAAK;AACvB;AACA,SAAS;AACT,kBAAkB,mDAAK;AACvB;AACA,SAAS,GAAG,EAAE,EAAE;;AAEhB;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,mBAAmB,sBAAsB;AACzC;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,sCAAsC,4DAAc;;AAEpD;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,SAAS;AACT;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,aAAa;AACb;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,8DAA8D,sCAAsC;AACpG,yBAAyB,gEAAqB,EAAE,+CAA+C,+BAA+B,EAAE,+CAA+C;AAC/K,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,wDAAU;AACxB,gBAAgB,qBAAqB;AACrC,KAAK,gBAAgB,WAAW,EAAE,QAAQ,EAAE;;AAE5C;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,8BAA8B,eAAe;AAC7C;AACA;AACA,4BAA4B;AAC5B;AACA;AACA;AACA;AACA;AACA;AACA;AACA,sFAAsF,gDAAgD,sDAAe,wBAAwB,sDAAe,CAAC,oDAAa,GAAG,sDAAe,oBAAoB,sDAAe,CAAC,wDAAQ,GAAG,sDAAe,gCAAgC;AAC1T,qCAAqC,gEAAqB,EAAE,2DAA2D,yCAAyC,sDAAW,wBAAwB,sDAAW,CAAC,oDAAS,GAAG,sDAAW,oBAAoB,sDAAW,CAAC,wDAAW,GAAG,sDAAW,gCAAgC,EAAE,2DAA2D;AAC5X;AACA,KAAK,6BAA6B;AAClC,KAAK,OAAO,oDAAM,EAAE;AACpB,KAAK,yBAAyB;AAC9B,KAAK,gCAAgC,OAAO,oDAAM,SAAS,wDAAQ,IAAI,GAAG;AAC1E,KAAK,gCAAgC,OAAO,sDAAQ,EAAE,GAAG,OAAO,oDAAM,sCAAsC;AAC5G;AACA,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,wDAAU;AACxB,gBAAgB,qBAAqB;AACrC,KAAK,gBAAgB,UAAU,6BAA6B,GAAG,OAAO,oDAAa,EAAE,GAAG,yBAAyB,GAAG;AACpH,sBAAsB,oDAAM;AAC5B,uBAAuB,wDAAQ;AAC/B,aAAa,GAAG,GAAG;AACnB,sBAAsB,sDAAQ;AAC9B,aAAa;AACb,sBAAsB,oDAAM;AAC5B;AACA,aAAa,GAAG,EAAE,EAAE,QAAQ,EAAE;;AAE9B;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,4CAA4C,4DAAc;AAC1D;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,iBAAiB,yDAAG,EAAE,6DAAO,EAAE,8DAAQ,EAAE,0DAAI,EAAE,2DAAK;AACpD;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,qCAAqC,6FAA+B;AACpE;AACA;AACA,CAAC;AACD;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,6BAA6B,oDAAe;AAC5C;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,qCAAqC,6EAAe;AACpD;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,qCAAqC,6EAAe;AACpD;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,qCAAqC,6EAAe;AACpD;AACA,sDAAsD;AACtD;AACA,oDAAoD,2DAAI;AACxD,0DAA0D,2EAAoB;AAC9E;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,SAAS;AACT;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,wEAAwE,yCAAyC,sDAAe,CAAC,8DAAe,GAAG,sDAAe,CAAC,oDAAa,GAAG,sDAAe,CAAC,wDAAQ,GAAG,sDAAe,sCAAsC;AACnQ,8BAA8B,gEAAqB,EAAE,oDAAoD,kCAAkC,sDAAW,CAAC,8DAAW,GAAG,sDAAW,CAAC,oDAAS,GAAG,sDAAW,CAAC,wDAAW,GAAG,sDAAW,sCAAsC,EAAE,oDAAoD;AAC9T;AACA,KAAK,OAAO,8DAAQ,EAAE;AACtB,KAAK,OAAO,oDAAM,EAAE;AACpB,KAAK,+BAA+B,OAAO,oDAAM,SAAS,wDAAQ,IAAI,GAAG;AACzE,KAAK,gCAAgC,OAAO,sDAAQ,EAAE,GAAG,OAAO,oDAAM,4CAA4C;AAClH;AACA,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,wDAAU;AACxB,gBAAgB,qBAAqB;AACrC,KAAK,gBAAgB,UAAU,OAAO,8DAAe,EAAE,GAAG,OAAO,oDAAa,EAAE,GAAG;AACnF,sBAAsB,oDAAM;AAC5B,uBAAuB,wDAAQ;AAC/B,aAAa,GAAG,GAAG;AACnB,sBAAsB,sDAAQ;AAC9B,aAAa;AACb,sBAAsB,oDAAM;AAC5B;AACA,aAAa,GAAG,EAAE,EAAE,QAAQ,EAAE;;AAE9B;AACA;AACA;AACA;AACA;AACA;AACA;AACA,yCAAyC,4DAAc;AACvD;AACA;AACA,CAAC;AACD;AACA;AACA;AACA;AACA;AACA,2CAA2C,4DAAc;;AAEzD;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,iBAAiB;AACjB,aAAa;AACb,SAAS;AACT;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,uBAAuB,6BAA6B;AACpD;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,wDAAwD,iCAAiC,sDAAe,mCAAmC,sDAAe,CAAC,oDAAa,GAAG,sDAAe,CAAC,wDAAQ,GAAG,sDAAe,qCAAqC;AAC1P,sBAAsB,gEAAqB,EAAE,4CAA4C,0BAA0B,sDAAW,mCAAmC,sDAAW,CAAC,oDAAS,GAAG,sDAAW,CAAC,wDAAW,GAAG,sDAAW,qCAAqC,EAAE,4CAA4C;AACjT;AACA,KAAK,gCAAgC,OAAO,sDAAQ,EAAE,GAAG,OAAO,oDAAM,yCAAyC,GAAG;AAClH,KAAK,OAAO,oDAAM,EAAE;AACpB,KAAK,gCAAgC,OAAO,oDAAM,SAAS,wDAAQ,IAAI,GAAG;AAC1E,KAAK,gCAAgC,OAAO,sDAAQ,EAAE,GAAG,OAAO,oDAAM,2CAA2C;AACjH;AACA,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,wDAAU;AACxB,gBAAgB,qBAAqB;AACrC,KAAK,gBAAgB,UAAU;AAC/B,sBAAsB,sDAAQ;AAC9B,aAAa;AACb,sBAAsB,oDAAM;AAC5B;AACA,aAAa,GAAG,GAAG,OAAO,oDAAa,EAAE,GAAG;AAC5C,sBAAsB,oDAAM;AAC5B,uBAAuB,wDAAQ;AAC/B,aAAa,GAAG,GAAG;AACnB,sBAAsB,sDAAQ;AAC9B,aAAa;AACb,sBAAsB,oDAAM;AAC5B;AACA,aAAa,GAAG,EAAE,EAAE,QAAQ,EAAE;AAC9B;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,sBAAsB,yBAAyB;AAC/C;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,iBAAiB;AACjB,aAAa;AACb;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,oDAAoD,+BAA+B,+DAAwB,CAAC,wDAAiB,GAAG,+DAAwB,iBAAiB,+DAAwB,CAAC,sEAAsB,GAAG,+DAAwB,CAAC,oDAAa,GAAG;AACpQ,mBAAmB,+DAAwB,EAAE,mEAAmE,4CAA4C,6BAA6B;AACzL;AACA,KAAK,OAAO,wDAAU,EAAE;AACxB,KAAK,sBAAsB;AAC3B,KAAK,OAAO,sEAAe,EAAE;AAC7B,KAAK,OAAO,oDAAM;AAClB;AACA;AACA,kBAAkB,OAAO,mDAAK,0BAA0B;AACxD;AACA,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,uDAAS;AACvB;AACA;AACA;AACA,aAAa;AACb,KAAK,gBAAgB,UAAU,OAAO,wDAAiB,EAAE,GAAG,sBAAsB,GAAG,OAAO,sEAAsB,EAAE,GAAG,OAAO,oDAAa,EAAE,EAAE,EAAE,GAAG;AACpJ,kBAAkB,mDAAK;AACvB;AACA,SAAS,GAAG,EAAE,EAAE;;AAEhB;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,0CAA0C,4DAAc;AACxD;AACA;AACA;AACA;AACA,oCAAoC,6FAA+B;AACnE;AACA;AACA,CAAC;AACD;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,8CAA8C,4CAAO;AACrD;AACA;AACA;AACA;AACA;AACA,2BAA2B,6EAAe;AAC1C;AACA;AACA,sCAAsC,SAAS;AAC/C;AACA;AACA;AACA;AACA;AACA;AACA;AACA,8BAA8B,2EAAa;AAC3C;AACA;AACA,mBAAmB,+CAAE;AACrB;AACA;AACA;AACA;AACA,yBAAyB,4EAAc;AACvC;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,yBAAyB,4CAAO;AAChC;AACA;AACA;AACA;AACA;AACA;AACA;AACA,8BAA8B,2EAAa;AAC3C;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,8BAA8B,2EAAa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iCAAiC,6EAAe;AAChD;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,aAAa;AACb;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,aAAa;AACb;AACA;AACA,sBAAsB,gEAAS;AAC/B,wCAAwC,yDAAyD,EAAE;AACnG;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,SAAS;AACT;AACA;AACA;AACA,sDAAsD,gCAAgC,sDAAe,CAAC,oDAAa,GAAG,sDAAe,CAAC,8DAAe,GAAG,sDAAe,yBAAyB,sDAAe,CAAC,wDAAQ,MAAM,sDAAe,oCAAoC;AACjR,qBAAqB,gEAAqB,EAAE,2CAA2C,yBAAyB,sDAAW,CAAC,oDAAS,GAAG,sDAAW,CAAC,8DAAW,GAAG,sDAAW,yBAAyB,sDAAW,CAAC,wDAAW,MAAM,sDAAW,oCAAoC,EAAE,2CAA2C;AAC/T;AACA,KAAK,OAAO,oDAAM,EAAE;AACpB,KAAK,OAAO,8DAAQ,EAAE;AACtB,KAAK,8BAA8B;AACnC,KAAK,gCAAgC,OAAO,sDAAQ,EAAE,GAAG,OAAO,oDAAM,SAAS,wDAAQ,IAAI,GAAG;AAC9F,KAAK,gCAAgC,OAAO,sDAAQ,EAAE,GAAG,OAAO,oDAAM,0CAA0C;AAChH;AACA,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,wDAAU;AACxB,gBAAgB,qBAAqB;AACrC,KAAK,gBAAgB,UAAU,OAAO,oDAAa,EAAE,GAAG,OAAO,8DAAe,EAAE,GAAG,8BAA8B,GAAG;AACpH,sBAAsB,sDAAQ;AAC9B,aAAa;AACb,sBAAsB,oDAAM;AAC5B,uBAAuB,wDAAQ;AAC/B,aAAa,GAAG,GAAG;AACnB,sBAAsB,sDAAQ;AAC9B,aAAa;AACb,sBAAsB,oDAAM;AAC5B;AACA,aAAa,GAAG,EAAE,EAAE,QAAQ,EAAE;AAC9B;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,kCAAkC,0DAAY;AAC9C;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,4DAA4D,mCAAmC,+DAAwB,CAAC,wDAAiB,GAAG,+DAAwB,gBAAgB;AACpL,uBAAuB,+DAAwB,EAAE,uHAAuH,mCAAmC,EAAE;AAC7M;AACA,KAAK,OAAO,wDAAU,EAAE;AACxB,KAAK;AACL;AACA;AACA,sBAAsB,OAAO,oDAAM,EAAE;AACrC;AACA,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,uDAAS;AACvB;AACA;AACA,aAAa;AACb,KAAK,gBAAgB,UAAU,OAAO,wDAAiB,EAAE,GAAG,qBAAqB,EAAE,EAAE,GAAG;AACxF,kBAAkB,oDAAM;AACxB,SAAS,GAAG,EAAE,EAAE;;AAEhB;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,iBAAiB;AACjB;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,8EAA8E,4CAA4C,sDAAe,CAAC,8DAAe,GAAG,sDAAe,CAAC,wDAAQ,GAAG;AACvL,iCAAiC,gEAAqB,EAAE,uDAAuD,qCAAqC,sDAAW,CAAC,8DAAW,GAAG,sDAAW,CAAC,wDAAW,GAAG,EAAE,uDAAuD;AACjQ;AACA,KAAK,OAAO,8DAAQ,EAAE;AACtB,KAAK,gCAAgC,OAAO,oDAAM,SAAS,wDAAQ,IAAI;AACvE;AACA,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,wDAAU;AACxB,gBAAgB,qBAAqB;AACrC,KAAK,gBAAgB,UAAU,OAAO,8DAAe,EAAE,GAAG;AAC1D,sBAAsB,oDAAM;AAC5B,uBAAuB,wDAAQ;AAC/B,aAAa,GAAG,EAAE,EAAE,QAAQ,EAAE;;AAE9B;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,kBAAkB,8DAAuB,EAAE,mBAAmB;AAC9D,kBAAkB,8DAAuB,EAAE,0CAA0C,8BAA8B,sDAAe,4BAA4B,EAAE,aAAa,oEAAc,EAAE,sEAAe,IAAI;AAChN;AACA,KAAK;AACL;AACA,cAAc,oDAAoD,gEAAyB,cAAc,4BAA4B,qDAAqD,EAAE,wBAAwB,SAAS,oEAAc,EAAE,sEAAe,EAAE,EAAE,wBAAwB,qDAAqD,EAAE,EAAE,EAAE,EAAE;AACrV,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,sDAAQ;AACtB;AACA,0BAA0B,oEAAc,EAAE,sEAAe;AACzD;AACA;AACA,aAAa;AACb,KAAK,gBAAgB,UAAU,iCAAiC,EAAE,EAAE,QAAQ,EAAE;;AAE9E;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;;AAEozB;;AAEpzB,gC;;;;;;;;;;;;AC56EA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAA4E;AACxC;AAC4P;AAClK;AACG;AACrF;AACmE;AACzE;AACK;AACoB;AACiE;;AAEhI;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACwC;AACQ;AACJ;AACO;;AAEnD;AACA;AACA,oCAAoC,4DAAc;;AAElD;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,wCAAwC,4CAAO;AAC/C;AACA,kEAAkE,2EAAoB;AACtF;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,yBAAyB;AACzB;AACA,+BAA+B;AAC/B;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,0BAA0B;AAC1B;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,oBAAoB,uBAAuB;AAC3C,yBAAyB,kBAAkB,kFAAoB,QAAQ;AACvE;AACA;AACA;AACA;AACA,uBAAuB,0BAA0B;AACjD,4BAA4B,qBAAqB,kFAAoB,QAAQ;AAC7E;AACA;AACA;AACA,uBAAuB,0BAA0B;AACjD,4BAA4B,qBAAqB,kFAAoB,QAAQ;AAC7E;AACA;AACA;AACA;AACA,gFAAgF,+CAA+C;AAC/H,iCAAiC,+DAAwB,EAAE,yGAAyG,+EAA+E,aAAa,gEAAyB;AACzR;AACA;AACA,uBAAuB,gEAAU;AACjC,aAAa,IAAI,kEAA2B,GAAG;AAC/C;AACA,gBAAgB,OAAO,mDAAK,EAAE;AAC9B,mBAAmB,OAAO,mDAAK,EAAE;AACjC,mBAAmB,OAAO,mDAAK,EAAE;AACjC;AACA,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,uDAAS;AACvB;AACA;AACA;AACA;AACA;AACA,+BAA+B,gEAAU;AACzC,qBAAqB;AACrB,aAAa;AACb,KAAK,gBAAgB,WAAW,EAAE,GAAG;AACrC,kBAAkB,mDAAK;AACvB,SAAS;AACT,kBAAkB,mDAAK;AACvB,SAAS;AACT,kBAAkB,mDAAK;AACvB,SAAS,GAAG,EAAE,EAAE;;AAEhB;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,6BAA6B,4CAAO;AACpC;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,mBAAmB,+CAAE;AACrB;AACA,mBAAmB,+CAAU;AAC7B;AACA;AACA;AACA;AACA;AACA;AACA,oCAAoC,gEAAS;AAC7C;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,SAAS;AACT;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,iDAAiD,6DAAM;AACvD;AACA,SAAS;AACT;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,SAAS;AACT;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,sBAAsB,2EAAa;AACnC;AACA;AACA;AACA;AACA;AACA;AACA;AACA,SAAS;AACT;AACA;AACA;AACA;AACA;AACA;AACA,mBAAmB,sDAAS;AAC5B,SAAS;AACT;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,8DAA8D,oCAAoC,sDAAe,CAAC,oDAAa,GAAG,sDAAe,CAAC,8DAAe,GAAG,sDAAe,CAAC,wDAAQ,MAAM;AAClM,yBAAyB,gEAAqB,EAAE,+CAA+C,6BAA6B,sDAAW,CAAC,oDAAS,GAAG,sDAAW,CAAC,8DAAW,GAAG,sDAAW,CAAC,wDAAW,MAAM,EAAE,+CAA+C;AAC5P;AACA,KAAK,OAAO,oDAAM,EAAE;AACpB,KAAK,OAAO,8DAAQ,EAAE;AACtB,KAAK,gCAAgC,OAAO,sDAAQ,EAAE,GAAG,OAAO,oDAAM,SAAS,wDAAQ,IAAI;AAC3F;AACA,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,wDAAU;AACxB,gBAAgB,qBAAqB;AACrC,KAAK,gBAAgB,UAAU,OAAO,oDAAa,EAAE,GAAG,OAAO,8DAAe,EAAE,GAAG;AACnF,sBAAsB,sDAAQ;AAC9B,aAAa;AACb,sBAAsB,oDAAM;AAC5B,uBAAuB,wDAAQ;AAC/B,aAAa,GAAG,EAAE,EAAE,QAAQ,EAAE;;AAE9B;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,8BAA8B,4CAAO;AACrC,oCAAoC,+CAAU,mDAAmD,sDAAS,+CAA+C,gEAAS;AAClK;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,qBAAqB,kFAAoB;AACzC;AACA;AACA;AACA;AACA,gBAAgB,kFAAoB;AACpC;AACA;AACA,qBAAqB,kFAAoB;AACzC;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,YAAY,oFAAsB;AAClC;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,qBAAqB,kFAAoB;AACzC;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,0BAA0B,kFAAoB;AAC9C;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,wDAAwD,iCAAiC,+DAAwB,CAAC,wDAAiB,GAAG,+DAAwB,oBAAoB,+DAAwB,CAAC,oDAAa,GAAG,+DAAwB,CAAC,gEAAqB,MAAM;AAC/Q,qBAAqB,+DAAwB,EAAE,0FAA0F;AACzI;AACA,KAAK,OAAO,wDAAU,EAAE;AACxB,KAAK,yBAAyB;AAC9B,KAAK,OAAO,oDAAM,EAAE;AACpB,KAAK,OAAO,gEAAc,gBAAgB,OAAO,sDAAQ,EAAE;AAC3D;AACA,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,uDAAS;AACvB;AACA;AACA,aAAa;AACb,KAAK,gBAAgB,UAAU,OAAO,wDAAiB,EAAE,GAAG,yBAAyB,GAAG,OAAO,oDAAa,EAAE,GAAG,OAAO,gEAAqB;AAC7I,sBAAsB,sDAAQ;AAC9B,aAAa,GAAG,EAAE,EAAE,QAAQ,EAAE;;AAE9B;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,2BAA2B,4CAAO;AAClC;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,SAAS;AACT;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,wBAAwB;AACxB;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,eAAe,gBAAgB;AAC/B;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,oBAAoB;AACpB;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,gBAAgB;AAChB;AACA;AACA;AACA;AACA;AACA;AACA;AACA,oDAAoD,gEAAS;AAC7D;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,aAAa,uDAAuD;AACpE,aAAa;AACb;AACA;AACA,wDAAwD,iCAAiC,sDAAe,CAAC,8DAAe,GAAG,sDAAe,CAAC,oDAAa,GAAG,sDAAe,CAAC,wDAAQ,MAAM;AACzL,sBAAsB,gEAAqB,EAAE,4CAA4C,0BAA0B,sDAAW,CAAC,8DAAW,GAAG,sDAAW,CAAC,oDAAS,GAAG,sDAAW,CAAC,wDAAW,MAAM,EAAE,4CAA4C;AAChP;AACA,KAAK,OAAO,8DAAQ,EAAE;AACtB,KAAK,OAAO,oDAAM,EAAE;AACpB,KAAK,gCAAgC,OAAO,sDAAQ,EAAE,GAAG,OAAO,oDAAM,SAAS,wDAAQ,IAAI;AAC3F;AACA,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,wDAAU;AACxB,gBAAgB,qBAAqB;AACrC,KAAK,gBAAgB,UAAU,OAAO,8DAAe,EAAE,GAAG,OAAO,oDAAa,EAAE,GAAG;AACnF,sBAAsB,sDAAQ;AAC9B,aAAa;AACb,sBAAsB,oDAAM;AAC5B,uBAAuB,wDAAQ;AAC/B,aAAa,GAAG,EAAE,EAAE,QAAQ,EAAE;;AAE9B;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,wEAAwE,4DAAuB,GAAG,kDAAa;AAC/G;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,oCAAoC,4CAAO;AAC3C;AACA,yCAAyC,4CAAO;AAChD;AACA;AACA;AACA;AACA;AACA;AACA,uCAAuC,+CAAU;AACjD;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,+BAA+B;AAC/B;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,gCAAgC,iDAAY;AAC5C;AACA;AACA;AACA;AACA;AACA,SAAS;AACT;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,YAAY,gEAAS;AACrB;AACA;AACA;AACA,YAAY,gEAAS;AACrB;AACA;AACA,SAAS;AACT;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,wCAAwC,gEAAS;AACjD;AACA;AACA;AACA;AACA;AACA;AACA,aAAa;AACb,SAAS;AACT;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,oCAAoC,KAAK,GAAG,+BAA+B;AAC3E;AACA;AACA,sCAAsC,KAAK;AAC3C;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,aAAa;AACb;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,yBAAyB;AACzB;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,aAAa;AACb;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,wDAAwD,uBAAuB;AAC/E;AACA,mDAAmD,uBAAuB;AAC1E;AACA;AACA,8EAA8E,4CAA4C,+DAAwB,CAAC,wDAAiB,GAAG,+DAAwB,CAAC,+DAAwB,GAAG,+DAAwB,CAAC,oDAAa,GAAG,+DAAwB,8BAA8B,+DAAwB,CAAC,gEAAqB,MAAM,+DAAwB,oBAAoB,+DAAwB,iBAAiB;AACnc,gCAAgC,+DAAwB,EAAE,4IAA4I;AACtM,QAAQ,+DAAwB;AAChC,KAAK;AACL;AACA,QAAQ,4DAAqB,MAAM,yDAAkB;AACrD,KAAK,EAAE,qIAAqI;AAC5I,QAAQ,yDAAkB;AAC1B,KAAK,EAAE,WAAW,6BAA6B,YAAY,6CAA6C,aAAa,gEAAyB;AAC9I;AACA;AACA,aAAa,IAAI,wEAAiC,6NAA6N;AAC/Q,QAAQ,6DAAsB;AAC9B,QAAQ,4DAAqB;AAC7B,QAAQ,0DAAmB;AAC3B,QAAQ,0DAAmB;AAC3B,QAAQ,uDAAgB;AACxB,KAAK;AACL,QAAQ,uDAAgB;AACxB,QAAQ,yDAAkB;AAC1B,KAAK,EAAE,wCAAwC,cAAc,kBAAkB,cAAc,eAAe,wBAAwB,4BAA4B,iCAAiC,oCAAoC,kBAAkB,MAAM,OAAO,gBAAgB,8CAA8C,QAAQ,UAAU,+EAA+E,gBAAgB,+ZAA+Z,eAAe,gBAAgB,cAAc,eAAe,oBAAoB,qBAAqB,aAAa,6EAA6E,eAAe,uZAAuZ,cAAc,iBAAiB,aAAa,gBAAgB,mBAAmB,sBAAsB,aAAa,2BAA2B,kBAAkB,MAAM,OAAO,WAAW,UAAU,qBAAqB,qCAAqC,QAAQ,UAAU,wBAAwB,4CAA4C;AACxwD;AACA,KAAK,OAAO,wDAAU,EAAE;AACxB,KAAK,OAAO,+DAAiB,EAAE;AAC/B,KAAK,OAAO,oDAAM,EAAE;AACpB,KAAK,gCAAgC,OAAO,sDAAQ,EAAE,GAAG,OAAO,oDAAM,oCAAoC,GAAG;AAC7G,KAAK,OAAO,gEAAc,gBAAgB,OAAO,sDAAQ,EAAE,GAAG;AAC9D,KAAK,yBAAyB;AAC9B,KAAK;AACL;AACA;AACA,mBAAmB,OAAO,mDAAK,EAAE;AACjC,2BAA2B,OAAO,oDAAM,EAAE;AAC1C,uBAAuB,OAAO,uDAAS,4BAA4B,eAAe,IAAI;AACtF;AACA,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,uDAAS;AACvB;AACA;AACA;AACA;AACA;AACA;AACA;AACA,iBAAiB;AACjB,+BAA+B,+DAAiB;AAChD,iCAAiC,qEAAuB;AACxD;AACA;AACA;AACA,qBAAqB;AACrB,sDAAsD,cAAc,kBAAkB,cAAc,eAAe,wBAAwB,4BAA4B,iCAAiC,oCAAoC,kBAAkB,MAAM,OAAO,gBAAgB,8CAA8C,QAAQ,UAAU,+EAA+E,gBAAgB,+ZAA+Z,eAAe,gBAAgB,cAAc,eAAe,oBAAoB,qBAAqB,aAAa,6EAA6E,eAAe,uZAAuZ,cAAc,iBAAiB,aAAa,gBAAgB,mBAAmB,sBAAsB,aAAa,2BAA2B,kBAAkB,MAAM,OAAO,WAAW,UAAU,qBAAqB,qCAAqC,QAAQ,UAAU,wBAAwB;AACnuD,aAAa;AACb,KAAK,gBAAgB,UAAU,OAAO,wDAAiB,EAAE,GAAG,OAAO,+DAAwB,EAAE,GAAG,OAAO,oDAAa,EAAE,GAAG;AACzH,sBAAsB,sDAAQ;AAC9B,aAAa;AACb,sBAAsB,oDAAM;AAC5B;AACA,aAAa,GAAG,GAAG,OAAO,gEAAqB;AAC/C,sBAAsB,sDAAQ;AAC9B,aAAa,GAAG,GAAG,yBAAyB,GAAG,sBAAsB,EAAE,EAAE,GAAG;AAC5E,kBAAkB,oDAAM;AACxB,SAAS;AACT,kBAAkB,mDAAK;AACvB,SAAS;AACT,kBAAkB,uDAAS;AAC3B,sCAAsC,eAAe;AACrD,SAAS,GAAG,EAAE,EAAE;;AAEhB;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,8BAA8B,4CAAO;AACrC;AACA,sCAAsC,4CAAO;AAC7C;AACA;AACA;AACA;AACA,QAAQ,gEAAS;AACjB;AACA,QAAQ,+DAAQ;AAChB;AACA;AACA;AACA,QAAQ,gEAAS;AACjB;AACA,QAAQ,kEAAW;AACnB;AACA;AACA;AACA;AACA,8BAA8B,4CAAO;AACrC;AACA;AACA;AACA,SAAS;AACT,gDAAgD,gEAAS;AACzD;AACA;AACA;AACA,SAAS;AACT;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,YAAY,6EAAY;AACxB;AACA;AACA;AACA;AACA,6CAA6C,wEAAe,CAAC,yDAAY;AACzE;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,2CAA2C,kFAAoB;AAC/D;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,uBAAuB,cAAc;AACrC;AACA;AACA;AACA;AACA;AACA;AACA;AACA,kCAAkC,QAAQ;AAC1C;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,aAAa;AACb;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,6CAA6C,+CAAE;AAC/C;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,SAAS;AACT;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,aAAa;AACb;AACA;AACA;AACA;AACA,4DAA4D,mCAAmC,+DAAwB,CAAC,8DAAuB,GAAG,+DAAwB,CAAC,yDAAkB,GAAG,+DAAwB,CAAC,6DAAsB,GAAG,+DAAwB,CAAC,gFAAuB,GAAG,+DAAwB,+BAA+B,+DAAwB,CAAC,oDAAa,GAAG;AACrY,uBAAuB,+DAAwB,EAAE,gGAAgG,qMAAqM,aAAa,gEAAyB;AAC5X,aAAa,UAAU,gFAAuB,YAAY,qFAA4B,EAAE;AACxF,aAAa;AACb;AACA,KAAK,OAAO,8DAAgB,EAAE;AAC9B,KAAK,OAAO,yDAAW,EAAE;AACzB,KAAK,OAAO,6DAAe,EAAE;AAC7B,KAAK,OAAO,qFAA4B,gBAAgB,OAAO,oDAAM,SAAS,gFAAuB,IAAI,GAAG;AAC5G,KAAK,+CAA+C,OAAO,sDAAQ,EAAE,GAAG;AACxE,KAAK,OAAO,oDAAM;AAClB;AACA;AACA,uBAAuB,OAAO,mDAAK,EAAE;AACrC,4BAA4B,OAAO,mDAAK,EAAE;AAC1C,6BAA6B,OAAO,mDAAK,EAAE;AAC3C,sCAAsC,OAAO,mDAAK,EAAE;AACpD;AACA,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,uDAAS;AACvB;AACA;AACA;AACA,qBAAqB,UAAU,gFAAuB,YAAY,qFAA4B,EAAE;AAChG;AACA,aAAa;AACb,KAAK,gBAAgB,UAAU,OAAO,8DAAuB,EAAE,GAAG,OAAO,yDAAkB,EAAE,GAAG,OAAO,6DAAsB,EAAE,GAAG,OAAO,qFAAmC;AAC5K,sBAAsB,oDAAM;AAC5B,uBAAuB,gFAAuB;AAC9C,aAAa,GAAG,GAAG;AACnB,sBAAsB,sDAAQ;AAC9B,aAAa,GAAG,GAAG,OAAO,oDAAa,EAAE,EAAE,EAAE,GAAG;AAChD,kBAAkB,mDAAK;AACvB,SAAS;AACT,kBAAkB,mDAAK;AACvB,SAAS;AACT,kBAAkB,mDAAK;AACvB,SAAS;AACT,kBAAkB,mDAAK;AACvB,SAAS,GAAG,EAAE,EAAE;;AAEhB;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,2BAA2B,8DAAuB,EAAE,4BAA4B;AAChF,2BAA2B,8DAAuB,EAAE,mDAAmD,yCAAyC,EAAE,EAAE;AACpJ,cAAc,oDAAoD,gEAAyB,uBAAuB,0DAA0D,EAAE,EAAE;AAChL,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,sDAAQ;AACtB;AACA;AACA;AACA,aAAa;AACb,KAAK,eAAe,EAAE;AACtB;AACA;AACA;AACA;AACA;AACA,uBAAuB,8DAAuB,EAAE,wBAAwB;AACxE,uBAAuB,8DAAuB,EAAE,+CAA+C,qCAAqC,EAAE;AACtI,YAAY,4DAAU;AACtB,YAAY,oEAAc;AAC1B;AACA,WAAW,4DAAU,wBAAwB;AAC7C,cAAc,oDAAoD,gEAAyB,mBAAmB,4BAA4B,+EAA+E,EAAE,wBAAwB,SAAS,4DAAU;AACtQ,QAAQ,oEAAc,uBAAuB,EAAE,wBAAwB,SAAS,4DAAU,6FAA6F,EAAE,EAAE,EAAE,EAAE;AAC/L,4BAA4B,CAAC,+DAAwB;AACrD,cAAc,sDAAQ;AACtB;AACA;AACA,oBAAoB,4DAAU;AAC9B,oBAAoB,oEAAc;AAClC;AACA;AACA;AACA,oBAAoB,4DAAU;AAC9B;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,aAAa;AACb,KAAK,eAAe,EAAE;;AAEtB;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;;AAEiT;;AAEjT,qC","file":"default~auth-auth-module~dashboard-dashboard-module~interest-session-interest-session-module~profile~5039053e.js","sourcesContent":["import { isObservable, of, Subject } from 'rxjs';\nimport * as i0 from '@angular/core';\nimport { Injectable, InjectionToken } from '@angular/core';\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nimport * as ɵngcc0 from '@angular/core';\nclass DataSource {\n}\n/** Checks whether an object is a data source. */\nfunction isDataSource(value) {\n    // Check if the value is a DataSource by observing if it has a connect function. Cannot\n    // be checked as an `instanceof DataSource` since people could create their own sources\n    // that match the interface, but don't extend DataSource.\n    return value && typeof value.connect === 'function';\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** DataSource wrapper for a native array. */\nclass ArrayDataSource extends DataSource {\n    constructor(_data) {\n        super();\n        this._data = _data;\n    }\n    connect() {\n        return isObservable(this._data) ? this._data : of(this._data);\n    }\n    disconnect() { }\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * A repeater that destroys views when they are removed from a\n * {@link ViewContainerRef}. When new items are inserted into the container,\n * the repeater will always construct a new embedded view for each item.\n *\n * @template T The type for the embedded view's $implicit property.\n * @template R The type for the item in each IterableDiffer change record.\n * @template C The type for the context passed to each embedded view.\n */\nclass _DisposeViewRepeaterStrategy {\n    applyChanges(changes, viewContainerRef, itemContextFactory, itemValueResolver, itemViewChanged) {\n        changes.forEachOperation((record, adjustedPreviousIndex, currentIndex) => {\n            let view;\n            let operation;\n            if (record.previousIndex == null) {\n                const insertContext = itemContextFactory(record, adjustedPreviousIndex, currentIndex);\n                view = viewContainerRef.createEmbeddedView(insertContext.templateRef, insertContext.context, insertContext.index);\n                operation = 1 /* INSERTED */;\n            }\n            else if (currentIndex == null) {\n                viewContainerRef.remove(adjustedPreviousIndex);\n                operation = 3 /* REMOVED */;\n            }\n            else {\n                view = viewContainerRef.get(adjustedPreviousIndex);\n                viewContainerRef.move(view, currentIndex);\n                operation = 2 /* MOVED */;\n            }\n            if (itemViewChanged) {\n                itemViewChanged({\n                    context: view === null || view === void 0 ? void 0 : view.context,\n                    operation,\n                    record,\n                });\n            }\n        });\n    }\n    detach() {\n    }\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * A repeater that caches views when they are removed from a\n * {@link ViewContainerRef}. When new items are inserted into the container,\n * the repeater will reuse one of the cached views instead of creating a new\n * embedded view. Recycling cached views reduces the quantity of expensive DOM\n * inserts.\n *\n * @template T The type for the embedded view's $implicit property.\n * @template R The type for the item in each IterableDiffer change record.\n * @template C The type for the context passed to each embedded view.\n */\nclass _RecycleViewRepeaterStrategy {\n    constructor() {\n        /**\n         * The size of the cache used to store unused views.\n         * Setting the cache size to `0` will disable caching. Defaults to 20 views.\n         */\n        this.viewCacheSize = 20;\n        /**\n         * View cache that stores embedded view instances that have been previously stamped out,\n         * but don't are not currently rendered. The view repeater will reuse these views rather than\n         * creating brand new ones.\n         *\n         * TODO(michaeljamesparsons) Investigate whether using a linked list would improve performance.\n         */\n        this._viewCache = [];\n    }\n    /** Apply changes to the DOM. */\n    applyChanges(changes, viewContainerRef, itemContextFactory, itemValueResolver, itemViewChanged) {\n        // Rearrange the views to put them in the right location.\n        changes.forEachOperation((record, adjustedPreviousIndex, currentIndex) => {\n            let view;\n            let operation;\n            if (record.previousIndex == null) { // Item added.\n                const viewArgsFactory = () => itemContextFactory(record, adjustedPreviousIndex, currentIndex);\n                view = this._insertView(viewArgsFactory, currentIndex, viewContainerRef, itemValueResolver(record));\n                operation = view ? 1 /* INSERTED */ : 0 /* REPLACED */;\n            }\n            else if (currentIndex == null) { // Item removed.\n                this._detachAndCacheView(adjustedPreviousIndex, viewContainerRef);\n                operation = 3 /* REMOVED */;\n            }\n            else { // Item moved.\n                view = this._moveView(adjustedPreviousIndex, currentIndex, viewContainerRef, itemValueResolver(record));\n                operation = 2 /* MOVED */;\n            }\n            if (itemViewChanged) {\n                itemViewChanged({\n                    context: view === null || view === void 0 ? void 0 : view.context,\n                    operation,\n                    record,\n                });\n            }\n        });\n    }\n    detach() {\n        for (const view of this._viewCache) {\n            view.destroy();\n        }\n        this._viewCache = [];\n    }\n    /**\n     * Inserts a view for a new item, either from the cache or by creating a new\n     * one. Returns `undefined` if the item was inserted into a cached view.\n     */\n    _insertView(viewArgsFactory, currentIndex, viewContainerRef, value) {\n        const cachedView = this._insertViewFromCache(currentIndex, viewContainerRef);\n        if (cachedView) {\n            cachedView.context.$implicit = value;\n            return undefined;\n        }\n        const viewArgs = viewArgsFactory();\n        return viewContainerRef.createEmbeddedView(viewArgs.templateRef, viewArgs.context, viewArgs.index);\n    }\n    /** Detaches the view at the given index and inserts into the view cache. */\n    _detachAndCacheView(index, viewContainerRef) {\n        const detachedView = viewContainerRef.detach(index);\n        this._maybeCacheView(detachedView, viewContainerRef);\n    }\n    /** Moves view at the previous index to the current index. */\n    _moveView(adjustedPreviousIndex, currentIndex, viewContainerRef, value) {\n        const view = viewContainerRef.get(adjustedPreviousIndex);\n        viewContainerRef.move(view, currentIndex);\n        view.context.$implicit = value;\n        return view;\n    }\n    /**\n     * Cache the given detached view. If the cache is full, the view will be\n     * destroyed.\n     */\n    _maybeCacheView(view, viewContainerRef) {\n        if (this._viewCache.length < this.viewCacheSize) {\n            this._viewCache.push(view);\n        }\n        else {\n            const index = viewContainerRef.indexOf(view);\n            // The host component could remove views from the container outside of\n            // the view repeater. It's unlikely this will occur, but just in case,\n            // destroy the view on its own, otherwise destroy it through the\n            // container to ensure that all the references are removed.\n            if (index === -1) {\n                view.destroy();\n            }\n            else {\n                viewContainerRef.remove(index);\n            }\n        }\n    }\n    /** Inserts a recycled view from the cache at the given index. */\n    _insertViewFromCache(index, viewContainerRef) {\n        const cachedView = this._viewCache.pop();\n        if (cachedView) {\n            viewContainerRef.insert(cachedView, index);\n        }\n        return cachedView || null;\n    }\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Class to be used to power selecting one or more options from a list.\n */\nclass SelectionModel {\n    constructor(_multiple = false, initiallySelectedValues, _emitChanges = true) {\n        this._multiple = _multiple;\n        this._emitChanges = _emitChanges;\n        /** Currently-selected values. */\n        this._selection = new Set();\n        /** Keeps track of the deselected options that haven't been emitted by the change event. */\n        this._deselectedToEmit = [];\n        /** Keeps track of the selected options that haven't been emitted by the change event. */\n        this._selectedToEmit = [];\n        /** Event emitted when the value has changed. */\n        this.changed = new Subject();\n        if (initiallySelectedValues && initiallySelectedValues.length) {\n            if (_multiple) {\n                initiallySelectedValues.forEach(value => this._markSelected(value));\n            }\n            else {\n                this._markSelected(initiallySelectedValues[0]);\n            }\n            // Clear the array in order to avoid firing the change event for preselected values.\n            this._selectedToEmit.length = 0;\n        }\n    }\n    /** Selected values. */\n    get selected() {\n        if (!this._selected) {\n            this._selected = Array.from(this._selection.values());\n        }\n        return this._selected;\n    }\n    /**\n     * Selects a value or an array of values.\n     */\n    select(...values) {\n        this._verifyValueAssignment(values);\n        values.forEach(value => this._markSelected(value));\n        this._emitChangeEvent();\n    }\n    /**\n     * Deselects a value or an array of values.\n     */\n    deselect(...values) {\n        this._verifyValueAssignment(values);\n        values.forEach(value => this._unmarkSelected(value));\n        this._emitChangeEvent();\n    }\n    /**\n     * Toggles a value between selected and deselected.\n     */\n    toggle(value) {\n        this.isSelected(value) ? this.deselect(value) : this.select(value);\n    }\n    /**\n     * Clears all of the selected values.\n     */\n    clear() {\n        this._unmarkAll();\n        this._emitChangeEvent();\n    }\n    /**\n     * Determines whether a value is selected.\n     */\n    isSelected(value) {\n        return this._selection.has(value);\n    }\n    /**\n     * Determines whether the model does not have a value.\n     */\n    isEmpty() {\n        return this._selection.size === 0;\n    }\n    /**\n     * Determines whether the model has a value.\n     */\n    hasValue() {\n        return !this.isEmpty();\n    }\n    /**\n     * Sorts the selected values based on a predicate function.\n     */\n    sort(predicate) {\n        if (this._multiple && this.selected) {\n            this._selected.sort(predicate);\n        }\n    }\n    /**\n     * Gets whether multiple values can be selected.\n     */\n    isMultipleSelection() {\n        return this._multiple;\n    }\n    /** Emits a change event and clears the records of selected and deselected values. */\n    _emitChangeEvent() {\n        // Clear the selected values so they can be re-cached.\n        this._selected = null;\n        if (this._selectedToEmit.length || this._deselectedToEmit.length) {\n            this.changed.next({\n                source: this,\n                added: this._selectedToEmit,\n                removed: this._deselectedToEmit\n            });\n            this._deselectedToEmit = [];\n            this._selectedToEmit = [];\n        }\n    }\n    /** Selects a value. */\n    _markSelected(value) {\n        if (!this.isSelected(value)) {\n            if (!this._multiple) {\n                this._unmarkAll();\n            }\n            this._selection.add(value);\n            if (this._emitChanges) {\n                this._selectedToEmit.push(value);\n            }\n        }\n    }\n    /** Deselects a value. */\n    _unmarkSelected(value) {\n        if (this.isSelected(value)) {\n            this._selection.delete(value);\n            if (this._emitChanges) {\n                this._deselectedToEmit.push(value);\n            }\n        }\n    }\n    /** Clears out the selected values. */\n    _unmarkAll() {\n        if (!this.isEmpty()) {\n            this._selection.forEach(value => this._unmarkSelected(value));\n        }\n    }\n    /**\n     * Verifies the value assignment and throws an error if the specified value array is\n     * including multiple values while the selection model is not supporting multiple values.\n     */\n    _verifyValueAssignment(values) {\n        if (values.length > 1 && !this._multiple && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n            throw getMultipleValuesInSingleSelectionError();\n        }\n    }\n}\n/**\n * Returns an error that reports that multiple values are passed into a selection model\n * with a single value.\n * @docs-private\n */\nfunction getMultipleValuesInSingleSelectionError() {\n    return Error('Cannot pass multiple values into SelectionModel with single-value mode.');\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Class to coordinate unique selection based on name.\n * Intended to be consumed as an Angular service.\n * This service is needed because native radio change events are only fired on the item currently\n * being selected, and we still need to uncheck the previous selection.\n *\n * This service does not *store* any IDs and names because they may change at any time, so it is\n * less error-prone if they are simply passed through when the events occur.\n */\nclass UniqueSelectionDispatcher {\n    constructor() {\n        this._listeners = [];\n    }\n    /**\n     * Notify other items that selection for the given name has been set.\n     * @param id ID of the item.\n     * @param name Name of the item.\n     */\n    notify(id, name) {\n        for (let listener of this._listeners) {\n            listener(id, name);\n        }\n    }\n    /**\n     * Listen for future changes to item selection.\n     * @return Function used to deregister listener\n     */\n    listen(listener) {\n        this._listeners.push(listener);\n        return () => {\n            this._listeners = this._listeners.filter((registered) => {\n                return listener !== registered;\n            });\n        };\n    }\n    ngOnDestroy() {\n        this._listeners = [];\n    }\n}\nUniqueSelectionDispatcher.ɵfac = function UniqueSelectionDispatcher_Factory(t) { return new (t || UniqueSelectionDispatcher)(); };\nUniqueSelectionDispatcher.ɵprov = i0.ɵɵdefineInjectable({ factory: function UniqueSelectionDispatcher_Factory() { return new UniqueSelectionDispatcher(); }, token: UniqueSelectionDispatcher, providedIn: \"root\" });\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(UniqueSelectionDispatcher, [{\n        type: Injectable,\n        args: [{ providedIn: 'root' }]\n    }], function () { return []; }, null); })();\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Injection token for {@link _ViewRepeater}. This token is for use by Angular Material only.\n * @docs-private\n */\nconst _VIEW_REPEATER_STRATEGY = new InjectionToken('_ViewRepeater');\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { ArrayDataSource, DataSource, SelectionModel, UniqueSelectionDispatcher, _DisposeViewRepeaterStrategy, _RecycleViewRepeaterStrategy, _VIEW_REPEATER_STRATEGY, getMultipleValuesInSingleSelectionError, isDataSource };\n\n//# sourceMappingURL=collections.js.map","import { ElementRef } from '@angular/core';\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Coerces a data-bound value (typically a string) to a boolean. */\nfunction coerceBooleanProperty(value) {\n    return value != null && `${value}` !== 'false';\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nfunction coerceNumberProperty(value, fallbackValue = 0) {\n    return _isNumberValue(value) ? Number(value) : fallbackValue;\n}\n/**\n * Whether the provided value is considered a number.\n * @docs-private\n */\nfunction _isNumberValue(value) {\n    // parseFloat(value) handles most of the cases we're interested in (it treats null, empty string,\n    // and other non-number values as NaN, where Number just uses 0) but it considers the string\n    // '123hello' to be a valid number. Therefore we also check if Number(value) is NaN.\n    return !isNaN(parseFloat(value)) && !isNaN(Number(value));\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nfunction coerceArray(value) {\n    return Array.isArray(value) ? value : [value];\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Coerces a value to a CSS pixel value. */\nfunction coerceCssPixelValue(value) {\n    if (value == null) {\n        return '';\n    }\n    return typeof value === 'string' ? value : `${value}px`;\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Coerces an ElementRef or an Element into an element.\n * Useful for APIs that can accept either a ref or the native element itself.\n */\nfunction coerceElement(elementOrRef) {\n    return elementOrRef instanceof ElementRef ? elementOrRef.nativeElement : elementOrRef;\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Coerces a value to an array of trimmed non-empty strings.\n * Any input that is not an array, `null` or `undefined` will be turned into a string\n * via `toString()` and subsequently split with the given separator.\n * `null` and `undefined` will result in an empty array.\n * This results in the following outcomes:\n * - `null` -&gt; `[]`\n * - `[null]` -&gt; `[\"null\"]`\n * - `[\"a\", \"b \", \" \"]` -&gt; `[\"a\", \"b\"]`\n * - `[1, [2, 3]]` -&gt; `[\"1\", \"2,3\"]`\n * - `[{ a: 0 }]` -&gt; `[\"[object Object]\"]`\n * - `{ a: 0 }` -&gt; `[\"[object\", \"Object]\"]`\n *\n * Useful for defining CSS classes or table columns.\n * @param value the value to coerce into an array of strings\n * @param separator split-separator if value isn't an array\n */\nfunction coerceStringArray(value, separator = /\\s+/) {\n    const result = [];\n    if (value != null) {\n        const sourceValues = Array.isArray(value) ? value : `${value}`.split(separator);\n        for (const sourceValue of sourceValues) {\n            const trimmedString = `${sourceValue}`.trim();\n            if (trimmedString) {\n                result.push(trimmedString);\n            }\n        }\n    }\n    return result;\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nexport { _isNumberValue, coerceArray, coerceBooleanProperty, coerceCssPixelValue, coerceElement, coerceNumberProperty, coerceStringArray };\n//# sourceMappingURL=coercion.js.map\n","/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nconst MAC_ENTER = 3;\nconst BACKSPACE = 8;\nconst TAB = 9;\nconst NUM_CENTER = 12;\nconst ENTER = 13;\nconst SHIFT = 16;\nconst CONTROL = 17;\nconst ALT = 18;\nconst PAUSE = 19;\nconst CAPS_LOCK = 20;\nconst ESCAPE = 27;\nconst SPACE = 32;\nconst PAGE_UP = 33;\nconst PAGE_DOWN = 34;\nconst END = 35;\nconst HOME = 36;\nconst LEFT_ARROW = 37;\nconst UP_ARROW = 38;\nconst RIGHT_ARROW = 39;\nconst DOWN_ARROW = 40;\nconst PLUS_SIGN = 43;\nconst PRINT_SCREEN = 44;\nconst INSERT = 45;\nconst DELETE = 46;\nconst ZERO = 48;\nconst ONE = 49;\nconst TWO = 50;\nconst THREE = 51;\nconst FOUR = 52;\nconst FIVE = 53;\nconst SIX = 54;\nconst SEVEN = 55;\nconst EIGHT = 56;\nconst NINE = 57;\nconst FF_SEMICOLON = 59; // Firefox (Gecko) fires this for semicolon instead of 186\nconst FF_EQUALS = 61; // Firefox (Gecko) fires this for equals instead of 187\nconst QUESTION_MARK = 63;\nconst AT_SIGN = 64;\nconst A = 65;\nconst B = 66;\nconst C = 67;\nconst D = 68;\nconst E = 69;\nconst F = 70;\nconst G = 71;\nconst H = 72;\nconst I = 73;\nconst J = 74;\nconst K = 75;\nconst L = 76;\nconst M = 77;\nconst N = 78;\nconst O = 79;\nconst P = 80;\nconst Q = 81;\nconst R = 82;\nconst S = 83;\nconst T = 84;\nconst U = 85;\nconst V = 86;\nconst W = 87;\nconst X = 88;\nconst Y = 89;\nconst Z = 90;\nconst META = 91; // WIN_KEY_LEFT\nconst MAC_WK_CMD_LEFT = 91;\nconst MAC_WK_CMD_RIGHT = 93;\nconst CONTEXT_MENU = 93;\nconst NUMPAD_ZERO = 96;\nconst NUMPAD_ONE = 97;\nconst NUMPAD_TWO = 98;\nconst NUMPAD_THREE = 99;\nconst NUMPAD_FOUR = 100;\nconst NUMPAD_FIVE = 101;\nconst NUMPAD_SIX = 102;\nconst NUMPAD_SEVEN = 103;\nconst NUMPAD_EIGHT = 104;\nconst NUMPAD_NINE = 105;\nconst NUMPAD_MULTIPLY = 106;\nconst NUMPAD_PLUS = 107;\nconst NUMPAD_MINUS = 109;\nconst NUMPAD_PERIOD = 110;\nconst NUMPAD_DIVIDE = 111;\nconst F1 = 112;\nconst F2 = 113;\nconst F3 = 114;\nconst F4 = 115;\nconst F5 = 116;\nconst F6 = 117;\nconst F7 = 118;\nconst F8 = 119;\nconst F9 = 120;\nconst F10 = 121;\nconst F11 = 122;\nconst F12 = 123;\nconst NUM_LOCK = 144;\nconst SCROLL_LOCK = 145;\nconst FIRST_MEDIA = 166;\nconst FF_MINUS = 173;\nconst MUTE = 173; // Firefox (Gecko) fires 181 for MUTE\nconst VOLUME_DOWN = 174; // Firefox (Gecko) fires 182 for VOLUME_DOWN\nconst VOLUME_UP = 175; // Firefox (Gecko) fires 183 for VOLUME_UP\nconst FF_MUTE = 181;\nconst FF_VOLUME_DOWN = 182;\nconst LAST_MEDIA = 183;\nconst FF_VOLUME_UP = 183;\nconst SEMICOLON = 186; // Firefox (Gecko) fires 59 for SEMICOLON\nconst EQUALS = 187; // Firefox (Gecko) fires 61 for EQUALS\nconst COMMA = 188;\nconst DASH = 189; // Firefox (Gecko) fires 173 for DASH/MINUS\nconst PERIOD = 190;\nconst SLASH = 191;\nconst APOSTROPHE = 192;\nconst TILDE = 192;\nconst OPEN_SQUARE_BRACKET = 219;\nconst BACKSLASH = 220;\nconst CLOSE_SQUARE_BRACKET = 221;\nconst SINGLE_QUOTE = 222;\nconst MAC_META = 224;\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Checks whether a modifier key is pressed.\n * @param event Event to be checked.\n */\nfunction hasModifierKey(event, ...modifiers) {\n    if (modifiers.length) {\n        return modifiers.some(modifier => event[modifier]);\n    }\n    return event.altKey || event.shiftKey || event.ctrlKey || event.metaKey;\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { A, ALT, APOSTROPHE, AT_SIGN, B, BACKSLASH, BACKSPACE, C, CAPS_LOCK, CLOSE_SQUARE_BRACKET, COMMA, CONTEXT_MENU, CONTROL, D, DASH, DELETE, DOWN_ARROW, E, EIGHT, END, ENTER, EQUALS, ESCAPE, F, F1, F10, F11, F12, F2, F3, F4, F5, F6, F7, F8, F9, FF_EQUALS, FF_MINUS, FF_MUTE, FF_SEMICOLON, FF_VOLUME_DOWN, FF_VOLUME_UP, FIRST_MEDIA, FIVE, FOUR, G, H, HOME, I, INSERT, J, K, L, LAST_MEDIA, LEFT_ARROW, M, MAC_ENTER, MAC_META, MAC_WK_CMD_LEFT, MAC_WK_CMD_RIGHT, META, MUTE, N, NINE, NUMPAD_DIVIDE, NUMPAD_EIGHT, NUMPAD_FIVE, NUMPAD_FOUR, NUMPAD_MINUS, NUMPAD_MULTIPLY, NUMPAD_NINE, NUMPAD_ONE, NUMPAD_PERIOD, NUMPAD_PLUS, NUMPAD_SEVEN, NUMPAD_SIX, NUMPAD_THREE, NUMPAD_TWO, NUMPAD_ZERO, NUM_CENTER, NUM_LOCK, O, ONE, OPEN_SQUARE_BRACKET, P, PAGE_DOWN, PAGE_UP, PAUSE, PERIOD, PLUS_SIGN, PRINT_SCREEN, Q, QUESTION_MARK, R, RIGHT_ARROW, S, SCROLL_LOCK, SEMICOLON, SEVEN, SHIFT, SINGLE_QUOTE, SIX, SLASH, SPACE, T, TAB, THREE, TILDE, TWO, U, UP_ARROW, V, VOLUME_DOWN, VOLUME_UP, W, X, Y, Z, ZERO, hasModifierKey };\n\n//# sourceMappingURL=keycodes.js.map","import { coerceElement, coerceBooleanProperty, coerceNumberProperty } from '@angular/cdk/coercion';\nimport * as i0 from '@angular/core';\nimport { Injectable, EventEmitter, Directive, ElementRef, NgZone, Output, Input, NgModule } from '@angular/core';\nimport { Observable, Subject } from 'rxjs';\nimport { debounceTime } from 'rxjs/operators';\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Factory that creates a new MutationObserver and allows us to stub it out in unit tests.\n * @docs-private\n */\nimport * as ɵngcc0 from '@angular/core';\nclass MutationObserverFactory {\n    create(callback) {\n        return typeof MutationObserver === 'undefined' ? null : new MutationObserver(callback);\n    }\n}\nMutationObserverFactory.ɵfac = function MutationObserverFactory_Factory(t) { return new (t || MutationObserverFactory)(); };\nMutationObserverFactory.ɵprov = i0.ɵɵdefineInjectable({ factory: function MutationObserverFactory_Factory() { return new MutationObserverFactory(); }, token: MutationObserverFactory, providedIn: \"root\" });\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(MutationObserverFactory, [{\n        type: Injectable,\n        args: [{ providedIn: 'root' }]\n    }], null, null); })();\n/** An injectable service that allows watching elements for changes to their content. */\nclass ContentObserver {\n    constructor(_mutationObserverFactory) {\n        this._mutationObserverFactory = _mutationObserverFactory;\n        /** Keeps track of the existing MutationObservers so they can be reused. */\n        this._observedElements = new Map();\n    }\n    ngOnDestroy() {\n        this._observedElements.forEach((_, element) => this._cleanupObserver(element));\n    }\n    observe(elementOrRef) {\n        const element = coerceElement(elementOrRef);\n        return new Observable((observer) => {\n            const stream = this._observeElement(element);\n            const subscription = stream.subscribe(observer);\n            return () => {\n                subscription.unsubscribe();\n                this._unobserveElement(element);\n            };\n        });\n    }\n    /**\n     * Observes the given element by using the existing MutationObserver if available, or creating a\n     * new one if not.\n     */\n    _observeElement(element) {\n        if (!this._observedElements.has(element)) {\n            const stream = new Subject();\n            const observer = this._mutationObserverFactory.create(mutations => stream.next(mutations));\n            if (observer) {\n                observer.observe(element, {\n                    characterData: true,\n                    childList: true,\n                    subtree: true\n                });\n            }\n            this._observedElements.set(element, { observer, stream, count: 1 });\n        }\n        else {\n            this._observedElements.get(element).count++;\n        }\n        return this._observedElements.get(element).stream;\n    }\n    /**\n     * Un-observes the given element and cleans up the underlying MutationObserver if nobody else is\n     * observing this element.\n     */\n    _unobserveElement(element) {\n        if (this._observedElements.has(element)) {\n            this._observedElements.get(element).count--;\n            if (!this._observedElements.get(element).count) {\n                this._cleanupObserver(element);\n            }\n        }\n    }\n    /** Clean up the underlying MutationObserver for the specified element. */\n    _cleanupObserver(element) {\n        if (this._observedElements.has(element)) {\n            const { observer, stream } = this._observedElements.get(element);\n            if (observer) {\n                observer.disconnect();\n            }\n            stream.complete();\n            this._observedElements.delete(element);\n        }\n    }\n}\nContentObserver.ɵfac = function ContentObserver_Factory(t) { return new (t || ContentObserver)(ɵngcc0.ɵɵinject(MutationObserverFactory)); };\nContentObserver.ɵprov = i0.ɵɵdefineInjectable({ factory: function ContentObserver_Factory() { return new ContentObserver(i0.ɵɵinject(MutationObserverFactory)); }, token: ContentObserver, providedIn: \"root\" });\nContentObserver.ctorParameters = () => [\n    { type: MutationObserverFactory }\n];\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(ContentObserver, [{\n        type: Injectable,\n        args: [{ providedIn: 'root' }]\n    }], function () { return [{ type: MutationObserverFactory }]; }, null); })();\n/**\n * Directive that triggers a callback whenever the content of\n * its associated element has changed.\n */\nclass CdkObserveContent {\n    constructor(_contentObserver, _elementRef, _ngZone) {\n        this._contentObserver = _contentObserver;\n        this._elementRef = _elementRef;\n        this._ngZone = _ngZone;\n        /** Event emitted for each change in the element's content. */\n        this.event = new EventEmitter();\n        this._disabled = false;\n        this._currentSubscription = null;\n    }\n    /**\n     * Whether observing content is disabled. This option can be used\n     * to disconnect the underlying MutationObserver until it is needed.\n     */\n    get disabled() { return this._disabled; }\n    set disabled(value) {\n        this._disabled = coerceBooleanProperty(value);\n        this._disabled ? this._unsubscribe() : this._subscribe();\n    }\n    /** Debounce interval for emitting the changes. */\n    get debounce() { return this._debounce; }\n    set debounce(value) {\n        this._debounce = coerceNumberProperty(value);\n        this._subscribe();\n    }\n    ngAfterContentInit() {\n        if (!this._currentSubscription && !this.disabled) {\n            this._subscribe();\n        }\n    }\n    ngOnDestroy() {\n        this._unsubscribe();\n    }\n    _subscribe() {\n        this._unsubscribe();\n        const stream = this._contentObserver.observe(this._elementRef);\n        // TODO(mmalerba): We shouldn't be emitting on this @Output() outside the zone.\n        // Consider brining it back inside the zone next time we're making breaking changes.\n        // Bringing it back inside can cause things like infinite change detection loops and changed\n        // after checked errors if people's code isn't handling it properly.\n        this._ngZone.runOutsideAngular(() => {\n            this._currentSubscription =\n                (this.debounce ? stream.pipe(debounceTime(this.debounce)) : stream).subscribe(this.event);\n        });\n    }\n    _unsubscribe() {\n        var _a;\n        (_a = this._currentSubscription) === null || _a === void 0 ? void 0 : _a.unsubscribe();\n    }\n}\nCdkObserveContent.ɵfac = function CdkObserveContent_Factory(t) { return new (t || CdkObserveContent)(ɵngcc0.ɵɵdirectiveInject(ContentObserver), ɵngcc0.ɵɵdirectiveInject(ɵngcc0.ElementRef), ɵngcc0.ɵɵdirectiveInject(ɵngcc0.NgZone)); };\nCdkObserveContent.ɵdir = ɵngcc0.ɵɵdefineDirective({ type: CdkObserveContent, selectors: [[\"\", \"cdkObserveContent\", \"\"]], inputs: { disabled: [\"cdkObserveContentDisabled\", \"disabled\"], debounce: \"debounce\" }, outputs: { event: \"cdkObserveContent\" }, exportAs: [\"cdkObserveContent\"] });\nCdkObserveContent.ctorParameters = () => [\n    { type: ContentObserver },\n    { type: ElementRef },\n    { type: NgZone }\n];\nCdkObserveContent.propDecorators = {\n    event: [{ type: Output, args: ['cdkObserveContent',] }],\n    disabled: [{ type: Input, args: ['cdkObserveContentDisabled',] }],\n    debounce: [{ type: Input }]\n};\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(CdkObserveContent, [{\n        type: Directive,\n        args: [{\n                selector: '[cdkObserveContent]',\n                exportAs: 'cdkObserveContent'\n            }]\n    }], function () { return [{ type: ContentObserver }, { type: ɵngcc0.ElementRef }, { type: ɵngcc0.NgZone }]; }, { event: [{\n            type: Output,\n            args: ['cdkObserveContent']\n        }], disabled: [{\n            type: Input,\n            args: ['cdkObserveContentDisabled']\n        }], debounce: [{\n            type: Input\n        }] }); })();\nclass ObserversModule {\n}\nObserversModule.ɵmod = ɵngcc0.ɵɵdefineNgModule({ type: ObserversModule });\nObserversModule.ɵinj = ɵngcc0.ɵɵdefineInjector({ factory: function ObserversModule_Factory(t) { return new (t || ObserversModule)(); }, providers: [MutationObserverFactory] });\n(function () { (typeof ngJitMode === \"undefined\" || ngJitMode) && ɵngcc0.ɵɵsetNgModuleScope(ObserversModule, { declarations: [CdkObserveContent], exports: [CdkObserveContent] }); })();\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(ObserversModule, [{\n        type: NgModule,\n        args: [{\n                exports: [CdkObserveContent],\n                declarations: [CdkObserveContent],\n                providers: [MutationObserverFactory]\n            }]\n    }], null, null); })();\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { CdkObserveContent, ContentObserver, MutationObserverFactory, ObserversModule };\n\n//# sourceMappingURL=observers.js.map","import * as i0 from '@angular/core';\nimport { InjectionToken, inject, EventEmitter, Injectable, Optional, Inject, Directive, Output, Input, NgModule } from '@angular/core';\nimport { DOCUMENT } from '@angular/common';\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Injection token used to inject the document into Directionality.\n * This is used so that the value can be faked in tests.\n *\n * We can't use the real document in tests because changing the real `dir` causes geometry-based\n * tests in Safari to fail.\n *\n * We also can't re-provide the DOCUMENT token from platform-brower because the unit tests\n * themselves use things like `querySelector` in test code.\n *\n * This token is defined in a separate file from Directionality as a workaround for\n * https://github.com/angular/angular/issues/22559\n *\n * @docs-private\n */\nimport * as ɵngcc0 from '@angular/core';\nconst DIR_DOCUMENT = new InjectionToken('cdk-dir-doc', {\n    providedIn: 'root',\n    factory: DIR_DOCUMENT_FACTORY,\n});\n/** @docs-private */\nfunction DIR_DOCUMENT_FACTORY() {\n    return inject(DOCUMENT);\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * The directionality (LTR / RTL) context for the application (or a subtree of it).\n * Exposes the current direction and a stream of direction changes.\n */\nclass Directionality {\n    constructor(_document) {\n        /** The current 'ltr' or 'rtl' value. */\n        this.value = 'ltr';\n        /** Stream that emits whenever the 'ltr' / 'rtl' state changes. */\n        this.change = new EventEmitter();\n        if (_document) {\n            // TODO: handle 'auto' value -\n            // We still need to account for dir=\"auto\".\n            // It looks like HTMLElemenet.dir is also \"auto\" when that's set to the attribute,\n            // but getComputedStyle return either \"ltr\" or \"rtl\". avoiding getComputedStyle for now\n            const bodyDir = _document.body ? _document.body.dir : null;\n            const htmlDir = _document.documentElement ? _document.documentElement.dir : null;\n            const value = bodyDir || htmlDir;\n            this.value = (value === 'ltr' || value === 'rtl') ? value : 'ltr';\n        }\n    }\n    ngOnDestroy() {\n        this.change.complete();\n    }\n}\nDirectionality.ɵfac = function Directionality_Factory(t) { return new (t || Directionality)(ɵngcc0.ɵɵinject(DIR_DOCUMENT, 8)); };\nDirectionality.ɵprov = i0.ɵɵdefineInjectable({ factory: function Directionality_Factory() { return new Directionality(i0.ɵɵinject(DIR_DOCUMENT, 8)); }, token: Directionality, providedIn: \"root\" });\nDirectionality.ctorParameters = () => [\n    { type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [DIR_DOCUMENT,] }] }\n];\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(Directionality, [{\n        type: Injectable,\n        args: [{ providedIn: 'root' }]\n    }], function () { return [{ type: undefined, decorators: [{\n                type: Optional\n            }, {\n                type: Inject,\n                args: [DIR_DOCUMENT]\n            }] }]; }, null); })();\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Directive to listen for changes of direction of part of the DOM.\n *\n * Provides itself as Directionality such that descendant directives only need to ever inject\n * Directionality to get the closest direction.\n */\nclass Dir {\n    constructor() {\n        /** Normalized direction that accounts for invalid/unsupported values. */\n        this._dir = 'ltr';\n        /** Whether the `value` has been set to its initial value. */\n        this._isInitialized = false;\n        /** Event emitted when the direction changes. */\n        this.change = new EventEmitter();\n    }\n    /** @docs-private */\n    get dir() { return this._dir; }\n    set dir(value) {\n        const old = this._dir;\n        const normalizedValue = value ? value.toLowerCase() : value;\n        this._rawDir = value;\n        this._dir = (normalizedValue === 'ltr' || normalizedValue === 'rtl') ? normalizedValue : 'ltr';\n        if (old !== this._dir && this._isInitialized) {\n            this.change.emit(this._dir);\n        }\n    }\n    /** Current layout direction of the element. */\n    get value() { return this.dir; }\n    /** Initialize once default value has been set. */\n    ngAfterContentInit() {\n        this._isInitialized = true;\n    }\n    ngOnDestroy() {\n        this.change.complete();\n    }\n}\nDir.ɵfac = function Dir_Factory(t) { return new (t || Dir)(); };\nDir.ɵdir = ɵngcc0.ɵɵdefineDirective({ type: Dir, selectors: [[\"\", \"dir\", \"\"]], hostVars: 1, hostBindings: function Dir_HostBindings(rf, ctx) { if (rf & 2) {\n        ɵngcc0.ɵɵattribute(\"dir\", ctx._rawDir);\n    } }, inputs: { dir: \"dir\" }, outputs: { change: \"dirChange\" }, exportAs: [\"dir\"], features: [ɵngcc0.ɵɵProvidersFeature([{ provide: Directionality, useExisting: Dir }])] });\nDir.propDecorators = {\n    change: [{ type: Output, args: ['dirChange',] }],\n    dir: [{ type: Input }]\n};\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(Dir, [{\n        type: Directive,\n        args: [{\n                selector: '[dir]',\n                providers: [{ provide: Directionality, useExisting: Dir }],\n                host: { '[attr.dir]': '_rawDir' },\n                exportAs: 'dir'\n            }]\n    }], function () { return []; }, { change: [{\n            type: Output,\n            args: ['dirChange']\n        }], dir: [{\n            type: Input\n        }] }); })();\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nclass BidiModule {\n}\nBidiModule.ɵmod = ɵngcc0.ɵɵdefineNgModule({ type: BidiModule });\nBidiModule.ɵinj = ɵngcc0.ɵɵdefineInjector({ factory: function BidiModule_Factory(t) { return new (t || BidiModule)(); } });\n(function () { (typeof ngJitMode === \"undefined\" || ngJitMode) && ɵngcc0.ɵɵsetNgModuleScope(BidiModule, { declarations: [Dir], exports: [Dir] }); })();\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(BidiModule, [{\n        type: NgModule,\n        args: [{\n                exports: [Dir],\n                declarations: [Dir]\n            }]\n    }], null, null); })();\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { BidiModule, DIR_DOCUMENT, Dir, Directionality, DIR_DOCUMENT_FACTORY as ɵangular_material_src_cdk_bidi_bidi_a };\n\n//# sourceMappingURL=bidi.js.map","import * as i0 from '@angular/core';\nimport { Injectable, Inject, PLATFORM_ID, NgModule } from '@angular/core';\nimport { isPlatformBrowser } from '@angular/common';\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n// Whether the current platform supports the V8 Break Iterator. The V8 check\n// is necessary to detect all Blink based browsers.\nimport * as ɵngcc0 from '@angular/core';\nlet hasV8BreakIterator;\n// We need a try/catch around the reference to `Intl`, because accessing it in some cases can\n// cause IE to throw. These cases are tied to particular versions of Windows and can happen if\n// the consumer is providing a polyfilled `Map`. See:\n// https://github.com/Microsoft/ChakraCore/issues/3189\n// https://github.com/angular/components/issues/15687\ntry {\n    hasV8BreakIterator = (typeof Intl !== 'undefined' && Intl.v8BreakIterator);\n}\ncatch (_a) {\n    hasV8BreakIterator = false;\n}\n/**\n * Service to detect the current platform by comparing the userAgent strings and\n * checking browser-specific global properties.\n */\nclass Platform {\n    constructor(_platformId) {\n        this._platformId = _platformId;\n        // We want to use the Angular platform check because if the Document is shimmed\n        // without the navigator, the following checks will fail. This is preferred because\n        // sometimes the Document may be shimmed without the user's knowledge or intention\n        /** Whether the Angular application is being rendered in the browser. */\n        this.isBrowser = this._platformId ?\n            isPlatformBrowser(this._platformId) : typeof document === 'object' && !!document;\n        /** Whether the current browser is Microsoft Edge. */\n        this.EDGE = this.isBrowser && /(edge)/i.test(navigator.userAgent);\n        /** Whether the current rendering engine is Microsoft Trident. */\n        this.TRIDENT = this.isBrowser && /(msie|trident)/i.test(navigator.userAgent);\n        // EdgeHTML and Trident mock Blink specific things and need to be excluded from this check.\n        /** Whether the current rendering engine is Blink. */\n        this.BLINK = this.isBrowser && (!!(window.chrome || hasV8BreakIterator) &&\n            typeof CSS !== 'undefined' && !this.EDGE && !this.TRIDENT);\n        // Webkit is part of the userAgent in EdgeHTML, Blink and Trident. Therefore we need to\n        // ensure that Webkit runs standalone and is not used as another engine's base.\n        /** Whether the current rendering engine is WebKit. */\n        this.WEBKIT = this.isBrowser &&\n            /AppleWebKit/i.test(navigator.userAgent) && !this.BLINK && !this.EDGE && !this.TRIDENT;\n        /** Whether the current platform is Apple iOS. */\n        this.IOS = this.isBrowser && /iPad|iPhone|iPod/.test(navigator.userAgent) &&\n            !('MSStream' in window);\n        // It's difficult to detect the plain Gecko engine, because most of the browsers identify\n        // them self as Gecko-like browsers and modify the userAgent's according to that.\n        // Since we only cover one explicit Firefox case, we can simply check for Firefox\n        // instead of having an unstable check for Gecko.\n        /** Whether the current browser is Firefox. */\n        this.FIREFOX = this.isBrowser && /(firefox|minefield)/i.test(navigator.userAgent);\n        /** Whether the current platform is Android. */\n        // Trident on mobile adds the android platform to the userAgent to trick detections.\n        this.ANDROID = this.isBrowser && /android/i.test(navigator.userAgent) && !this.TRIDENT;\n        // Safari browsers will include the Safari keyword in their userAgent. Some browsers may fake\n        // this and just place the Safari keyword in the userAgent. To be more safe about Safari every\n        // Safari browser should also use Webkit as its layout engine.\n        /** Whether the current browser is Safari. */\n        this.SAFARI = this.isBrowser && /safari/i.test(navigator.userAgent) && this.WEBKIT;\n    }\n}\nPlatform.ɵfac = function Platform_Factory(t) { return new (t || Platform)(ɵngcc0.ɵɵinject(PLATFORM_ID)); };\nPlatform.ɵprov = i0.ɵɵdefineInjectable({ factory: function Platform_Factory() { return new Platform(i0.ɵɵinject(i0.PLATFORM_ID)); }, token: Platform, providedIn: \"root\" });\nPlatform.ctorParameters = () => [\n    { type: Object, decorators: [{ type: Inject, args: [PLATFORM_ID,] }] }\n];\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(Platform, [{\n        type: Injectable,\n        args: [{ providedIn: 'root' }]\n    }], function () { return [{ type: Object, decorators: [{\n                type: Inject,\n                args: [PLATFORM_ID]\n            }] }]; }, null); })();\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nclass PlatformModule {\n}\nPlatformModule.ɵmod = ɵngcc0.ɵɵdefineNgModule({ type: PlatformModule });\nPlatformModule.ɵinj = ɵngcc0.ɵɵdefineInjector({ factory: function PlatformModule_Factory(t) { return new (t || PlatformModule)(); } });\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(PlatformModule, [{\n        type: NgModule,\n        args: [{}]\n    }], null, null); })();\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Cached result Set of input types support by the current browser. */\nlet supportedInputTypes;\n/** Types of `<input>` that *might* be supported. */\nconst candidateInputTypes = [\n    // `color` must come first. Chrome 56 shows a warning if we change the type to `color` after\n    // first changing it to something else:\n    // The specified value \"\" does not conform to the required format.\n    // The format is \"#rrggbb\" where rr, gg, bb are two-digit hexadecimal numbers.\n    'color',\n    'button',\n    'checkbox',\n    'date',\n    'datetime-local',\n    'email',\n    'file',\n    'hidden',\n    'image',\n    'month',\n    'number',\n    'password',\n    'radio',\n    'range',\n    'reset',\n    'search',\n    'submit',\n    'tel',\n    'text',\n    'time',\n    'url',\n    'week',\n];\n/** @returns The input types supported by this browser. */\nfunction getSupportedInputTypes() {\n    // Result is cached.\n    if (supportedInputTypes) {\n        return supportedInputTypes;\n    }\n    // We can't check if an input type is not supported until we're on the browser, so say that\n    // everything is supported when not on the browser. We don't use `Platform` here since it's\n    // just a helper function and can't inject it.\n    if (typeof document !== 'object' || !document) {\n        supportedInputTypes = new Set(candidateInputTypes);\n        return supportedInputTypes;\n    }\n    let featureTestInput = document.createElement('input');\n    supportedInputTypes = new Set(candidateInputTypes.filter(value => {\n        featureTestInput.setAttribute('type', value);\n        return featureTestInput.type === value;\n    }));\n    return supportedInputTypes;\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Cached result of whether the user's browser supports passive event listeners. */\nlet supportsPassiveEvents;\n/**\n * Checks whether the user's browser supports passive event listeners.\n * See: https://github.com/WICG/EventListenerOptions/blob/gh-pages/explainer.md\n */\nfunction supportsPassiveEventListeners() {\n    if (supportsPassiveEvents == null && typeof window !== 'undefined') {\n        try {\n            window.addEventListener('test', null, Object.defineProperty({}, 'passive', {\n                get: () => supportsPassiveEvents = true\n            }));\n        }\n        finally {\n            supportsPassiveEvents = supportsPassiveEvents || false;\n        }\n    }\n    return supportsPassiveEvents;\n}\n/**\n * Normalizes an `AddEventListener` object to something that can be passed\n * to `addEventListener` on any browser, no matter whether it supports the\n * `options` parameter.\n * @param options Object to be normalized.\n */\nfunction normalizePassiveListenerOptions(options) {\n    return supportsPassiveEventListeners() ? options : !!options.capture;\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Cached result of the way the browser handles the horizontal scroll axis in RTL mode. */\nlet rtlScrollAxisType;\n/** Cached result of the check that indicates whether the browser supports scroll behaviors. */\nlet scrollBehaviorSupported;\n/** Check whether the browser supports scroll behaviors. */\nfunction supportsScrollBehavior() {\n    if (scrollBehaviorSupported == null) {\n        // If we're not in the browser, it can't be supported. Also check for `Element`, because\n        // some projects stub out the global `document` during SSR which can throw us off.\n        if (typeof document !== 'object' || !document || typeof Element !== 'function' || !Element) {\n            scrollBehaviorSupported = false;\n            return scrollBehaviorSupported;\n        }\n        // If the element can have a `scrollBehavior` style, we can be sure that it's supported.\n        if ('scrollBehavior' in document.documentElement.style) {\n            scrollBehaviorSupported = true;\n        }\n        else {\n            // At this point we have 3 possibilities: `scrollTo` isn't supported at all, it's\n            // supported but it doesn't handle scroll behavior, or it has been polyfilled.\n            const scrollToFunction = Element.prototype.scrollTo;\n            if (scrollToFunction) {\n                // We can detect if the function has been polyfilled by calling `toString` on it. Native\n                // functions are obfuscated using `[native code]`, whereas if it was overwritten we'd get\n                // the actual function source. Via https://davidwalsh.name/detect-native-function. Consider\n                // polyfilled functions as supporting scroll behavior.\n                scrollBehaviorSupported = !/\\{\\s*\\[native code\\]\\s*\\}/.test(scrollToFunction.toString());\n            }\n            else {\n                scrollBehaviorSupported = false;\n            }\n        }\n    }\n    return scrollBehaviorSupported;\n}\n/**\n * Checks the type of RTL scroll axis used by this browser. As of time of writing, Chrome is NORMAL,\n * Firefox & Safari are NEGATED, and IE & Edge are INVERTED.\n */\nfunction getRtlScrollAxisType() {\n    // We can't check unless we're on the browser. Just assume 'normal' if we're not.\n    if (typeof document !== 'object' || !document) {\n        return 0 /* NORMAL */;\n    }\n    if (rtlScrollAxisType == null) {\n        // Create a 1px wide scrolling container and a 2px wide content element.\n        const scrollContainer = document.createElement('div');\n        const containerStyle = scrollContainer.style;\n        scrollContainer.dir = 'rtl';\n        containerStyle.width = '1px';\n        containerStyle.overflow = 'auto';\n        containerStyle.visibility = 'hidden';\n        containerStyle.pointerEvents = 'none';\n        containerStyle.position = 'absolute';\n        const content = document.createElement('div');\n        const contentStyle = content.style;\n        contentStyle.width = '2px';\n        contentStyle.height = '1px';\n        scrollContainer.appendChild(content);\n        document.body.appendChild(scrollContainer);\n        rtlScrollAxisType = 0 /* NORMAL */;\n        // The viewport starts scrolled all the way to the right in RTL mode. If we are in a NORMAL\n        // browser this would mean that the scrollLeft should be 1. If it's zero instead we know we're\n        // dealing with one of the other two types of browsers.\n        if (scrollContainer.scrollLeft === 0) {\n            // In a NEGATED browser the scrollLeft is always somewhere in [-maxScrollAmount, 0]. For an\n            // INVERTED browser it is always somewhere in [0, maxScrollAmount]. We can determine which by\n            // setting to the scrollLeft to 1. This is past the max for a NEGATED browser, so it will\n            // return 0 when we read it again.\n            scrollContainer.scrollLeft = 1;\n            rtlScrollAxisType =\n                scrollContainer.scrollLeft === 0 ? 1 /* NEGATED */ : 2 /* INVERTED */;\n        }\n        scrollContainer.parentNode.removeChild(scrollContainer);\n    }\n    return rtlScrollAxisType;\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nlet shadowDomIsSupported;\n/** Checks whether the user's browser support Shadow DOM. */\nfunction _supportsShadowDom() {\n    if (shadowDomIsSupported == null) {\n        const head = typeof document !== 'undefined' ? document.head : null;\n        shadowDomIsSupported = !!(head && (head.createShadowRoot || head.attachShadow));\n    }\n    return shadowDomIsSupported;\n}\n/** Gets the shadow root of an element, if supported and the element is inside the Shadow DOM. */\nfunction _getShadowRoot(element) {\n    if (_supportsShadowDom()) {\n        const rootNode = element.getRootNode ? element.getRootNode() : null;\n        // Note that this should be caught by `_supportsShadowDom`, but some\n        // teams have been able to hit this code path on unsupported browsers.\n        if (typeof ShadowRoot !== 'undefined' && ShadowRoot && rootNode instanceof ShadowRoot) {\n            return rootNode;\n        }\n    }\n    return null;\n}\n/**\n * Gets the currently-focused element on the page while\n * also piercing through Shadow DOM boundaries.\n */\nfunction _getFocusedElementPierceShadowDom() {\n    let activeElement = typeof document !== 'undefined' && document ?\n        document.activeElement : null;\n    while (activeElement && activeElement.shadowRoot) {\n        const newActiveElement = activeElement.shadowRoot.activeElement;\n        if (newActiveElement === activeElement) {\n            break;\n        }\n        else {\n            activeElement = newActiveElement;\n        }\n    }\n    return activeElement;\n}\n/** Gets the target of an event while accounting for Shadow DOM. */\nfunction _getEventTarget(event) {\n    // If an event is bound outside the Shadow DOM, the `event.target` will\n    // point to the shadow root so we have to use `composedPath` instead.\n    return (event.composedPath ? event.composedPath()[0] : event.target);\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { Platform, PlatformModule, _getEventTarget, _getFocusedElementPierceShadowDom, _getShadowRoot, _supportsShadowDom, getRtlScrollAxisType, getSupportedInputTypes, normalizePassiveListenerOptions, supportsPassiveEventListeners, supportsScrollBehavior };\n\n//# sourceMappingURL=platform.js.map","import * as i2 from '@angular/common';\nimport { DOCUMENT } from '@angular/common';\nimport * as i0 from '@angular/core';\nimport { Injectable, Inject, QueryList, NgZone, Directive, ElementRef, Input, InjectionToken, Optional, EventEmitter, Output, NgModule } from '@angular/core';\nimport { Subject, Subscription, BehaviorSubject, of } from 'rxjs';\nimport { hasModifierKey, A, Z, ZERO, NINE, END, HOME, LEFT_ARROW, RIGHT_ARROW, UP_ARROW, DOWN_ARROW, TAB, ALT, CONTROL, MAC_META, META, SHIFT } from '@angular/cdk/keycodes';\nimport { tap, debounceTime, filter, map, take, skip, distinctUntilChanged, takeUntil } from 'rxjs/operators';\nimport { coerceBooleanProperty, coerceElement } from '@angular/cdk/coercion';\nimport * as i1 from '@angular/cdk/platform';\nimport { Platform, _getFocusedElementPierceShadowDom, normalizePassiveListenerOptions, _getEventTarget, _getShadowRoot, PlatformModule } from '@angular/cdk/platform';\nimport { ContentObserver, ObserversModule } from '@angular/cdk/observers';\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** IDs are delimited by an empty space, as per the spec. */\nimport * as ɵngcc0 from '@angular/core';\nimport * as ɵngcc1 from '@angular/cdk/platform';\nimport * as ɵngcc2 from '@angular/cdk/observers';\nconst ID_DELIMITER = ' ';\n/**\n * Adds the given ID to the specified ARIA attribute on an element.\n * Used for attributes such as aria-labelledby, aria-owns, etc.\n */\nfunction addAriaReferencedId(el, attr, id) {\n    const ids = getAriaReferenceIds(el, attr);\n    if (ids.some(existingId => existingId.trim() == id.trim())) {\n        return;\n    }\n    ids.push(id.trim());\n    el.setAttribute(attr, ids.join(ID_DELIMITER));\n}\n/**\n * Removes the given ID from the specified ARIA attribute on an element.\n * Used for attributes such as aria-labelledby, aria-owns, etc.\n */\nfunction removeAriaReferencedId(el, attr, id) {\n    const ids = getAriaReferenceIds(el, attr);\n    const filteredIds = ids.filter(val => val != id.trim());\n    if (filteredIds.length) {\n        el.setAttribute(attr, filteredIds.join(ID_DELIMITER));\n    }\n    else {\n        el.removeAttribute(attr);\n    }\n}\n/**\n * Gets the list of IDs referenced by the given ARIA attribute on an element.\n * Used for attributes such as aria-labelledby, aria-owns, etc.\n */\nfunction getAriaReferenceIds(el, attr) {\n    // Get string array of all individual ids (whitespace delimited) in the attribute value\n    return (el.getAttribute(attr) || '').match(/\\S+/g) || [];\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** ID used for the body container where all messages are appended. */\nconst MESSAGES_CONTAINER_ID = 'cdk-describedby-message-container';\n/** ID prefix used for each created message element. */\nconst CDK_DESCRIBEDBY_ID_PREFIX = 'cdk-describedby-message';\n/** Attribute given to each host element that is described by a message element. */\nconst CDK_DESCRIBEDBY_HOST_ATTRIBUTE = 'cdk-describedby-host';\n/** Global incremental identifier for each registered message element. */\nlet nextId = 0;\n/** Global map of all registered message elements that have been placed into the document. */\nconst messageRegistry = new Map();\n/** Container for all registered messages. */\nlet messagesContainer = null;\n/**\n * Utility that creates visually hidden elements with a message content. Useful for elements that\n * want to use aria-describedby to further describe themselves without adding additional visual\n * content.\n */\nclass AriaDescriber {\n    constructor(_document) {\n        this._document = _document;\n    }\n    describe(hostElement, message, role) {\n        if (!this._canBeDescribed(hostElement, message)) {\n            return;\n        }\n        const key = getKey(message, role);\n        if (typeof message !== 'string') {\n            // We need to ensure that the element has an ID.\n            setMessageId(message);\n            messageRegistry.set(key, { messageElement: message, referenceCount: 0 });\n        }\n        else if (!messageRegistry.has(key)) {\n            this._createMessageElement(message, role);\n        }\n        if (!this._isElementDescribedByMessage(hostElement, key)) {\n            this._addMessageReference(hostElement, key);\n        }\n    }\n    removeDescription(hostElement, message, role) {\n        if (!message || !this._isElementNode(hostElement)) {\n            return;\n        }\n        const key = getKey(message, role);\n        if (this._isElementDescribedByMessage(hostElement, key)) {\n            this._removeMessageReference(hostElement, key);\n        }\n        // If the message is a string, it means that it's one that we created for the\n        // consumer so we can remove it safely, otherwise we should leave it in place.\n        if (typeof message === 'string') {\n            const registeredMessage = messageRegistry.get(key);\n            if (registeredMessage && registeredMessage.referenceCount === 0) {\n                this._deleteMessageElement(key);\n            }\n        }\n        if (messagesContainer && messagesContainer.childNodes.length === 0) {\n            this._deleteMessagesContainer();\n        }\n    }\n    /** Unregisters all created message elements and removes the message container. */\n    ngOnDestroy() {\n        const describedElements = this._document.querySelectorAll(`[${CDK_DESCRIBEDBY_HOST_ATTRIBUTE}]`);\n        for (let i = 0; i < describedElements.length; i++) {\n            this._removeCdkDescribedByReferenceIds(describedElements[i]);\n            describedElements[i].removeAttribute(CDK_DESCRIBEDBY_HOST_ATTRIBUTE);\n        }\n        if (messagesContainer) {\n            this._deleteMessagesContainer();\n        }\n        messageRegistry.clear();\n    }\n    /**\n     * Creates a new element in the visually hidden message container element with the message\n     * as its content and adds it to the message registry.\n     */\n    _createMessageElement(message, role) {\n        const messageElement = this._document.createElement('div');\n        setMessageId(messageElement);\n        messageElement.textContent = message;\n        if (role) {\n            messageElement.setAttribute('role', role);\n        }\n        this._createMessagesContainer();\n        messagesContainer.appendChild(messageElement);\n        messageRegistry.set(getKey(message, role), { messageElement, referenceCount: 0 });\n    }\n    /** Deletes the message element from the global messages container. */\n    _deleteMessageElement(key) {\n        const registeredMessage = messageRegistry.get(key);\n        const messageElement = registeredMessage && registeredMessage.messageElement;\n        if (messagesContainer && messageElement) {\n            messagesContainer.removeChild(messageElement);\n        }\n        messageRegistry.delete(key);\n    }\n    /** Creates the global container for all aria-describedby messages. */\n    _createMessagesContainer() {\n        if (!messagesContainer) {\n            const preExistingContainer = this._document.getElementById(MESSAGES_CONTAINER_ID);\n            // When going from the server to the client, we may end up in a situation where there's\n            // already a container on the page, but we don't have a reference to it. Clear the\n            // old container so we don't get duplicates. Doing this, instead of emptying the previous\n            // container, should be slightly faster.\n            if (preExistingContainer && preExistingContainer.parentNode) {\n                preExistingContainer.parentNode.removeChild(preExistingContainer);\n            }\n            messagesContainer = this._document.createElement('div');\n            messagesContainer.id = MESSAGES_CONTAINER_ID;\n            // We add `visibility: hidden` in order to prevent text in this container from\n            // being searchable by the browser's Ctrl + F functionality.\n            // Screen-readers will still read the description for elements with aria-describedby even\n            // when the description element is not visible.\n            messagesContainer.style.visibility = 'hidden';\n            // Even though we use `visibility: hidden`, we still apply `cdk-visually-hidden` so that\n            // the description element doesn't impact page layout.\n            messagesContainer.classList.add('cdk-visually-hidden');\n            this._document.body.appendChild(messagesContainer);\n        }\n    }\n    /** Deletes the global messages container. */\n    _deleteMessagesContainer() {\n        if (messagesContainer && messagesContainer.parentNode) {\n            messagesContainer.parentNode.removeChild(messagesContainer);\n            messagesContainer = null;\n        }\n    }\n    /** Removes all cdk-describedby messages that are hosted through the element. */\n    _removeCdkDescribedByReferenceIds(element) {\n        // Remove all aria-describedby reference IDs that are prefixed by CDK_DESCRIBEDBY_ID_PREFIX\n        const originalReferenceIds = getAriaReferenceIds(element, 'aria-describedby')\n            .filter(id => id.indexOf(CDK_DESCRIBEDBY_ID_PREFIX) != 0);\n        element.setAttribute('aria-describedby', originalReferenceIds.join(' '));\n    }\n    /**\n     * Adds a message reference to the element using aria-describedby and increments the registered\n     * message's reference count.\n     */\n    _addMessageReference(element, key) {\n        const registeredMessage = messageRegistry.get(key);\n        // Add the aria-describedby reference and set the\n        // describedby_host attribute to mark the element.\n        addAriaReferencedId(element, 'aria-describedby', registeredMessage.messageElement.id);\n        element.setAttribute(CDK_DESCRIBEDBY_HOST_ATTRIBUTE, '');\n        registeredMessage.referenceCount++;\n    }\n    /**\n     * Removes a message reference from the element using aria-describedby\n     * and decrements the registered message's reference count.\n     */\n    _removeMessageReference(element, key) {\n        const registeredMessage = messageRegistry.get(key);\n        registeredMessage.referenceCount--;\n        removeAriaReferencedId(element, 'aria-describedby', registeredMessage.messageElement.id);\n        element.removeAttribute(CDK_DESCRIBEDBY_HOST_ATTRIBUTE);\n    }\n    /** Returns true if the element has been described by the provided message ID. */\n    _isElementDescribedByMessage(element, key) {\n        const referenceIds = getAriaReferenceIds(element, 'aria-describedby');\n        const registeredMessage = messageRegistry.get(key);\n        const messageId = registeredMessage && registeredMessage.messageElement.id;\n        return !!messageId && referenceIds.indexOf(messageId) != -1;\n    }\n    /** Determines whether a message can be described on a particular element. */\n    _canBeDescribed(element, message) {\n        if (!this._isElementNode(element)) {\n            return false;\n        }\n        if (message && typeof message === 'object') {\n            // We'd have to make some assumptions about the description element's text, if the consumer\n            // passed in an element. Assume that if an element is passed in, the consumer has verified\n            // that it can be used as a description.\n            return true;\n        }\n        const trimmedMessage = message == null ? '' : `${message}`.trim();\n        const ariaLabel = element.getAttribute('aria-label');\n        // We shouldn't set descriptions if they're exactly the same as the `aria-label` of the\n        // element, because screen readers will end up reading out the same text twice in a row.\n        return trimmedMessage ? (!ariaLabel || ariaLabel.trim() !== trimmedMessage) : false;\n    }\n    /** Checks whether a node is an Element node. */\n    _isElementNode(element) {\n        return element.nodeType === this._document.ELEMENT_NODE;\n    }\n}\nAriaDescriber.ɵfac = function AriaDescriber_Factory(t) { return new (t || AriaDescriber)(ɵngcc0.ɵɵinject(DOCUMENT)); };\nAriaDescriber.ɵprov = i0.ɵɵdefineInjectable({ factory: function AriaDescriber_Factory() { return new AriaDescriber(i0.ɵɵinject(i2.DOCUMENT)); }, token: AriaDescriber, providedIn: \"root\" });\nAriaDescriber.ctorParameters = () => [\n    { type: undefined, decorators: [{ type: Inject, args: [DOCUMENT,] }] }\n];\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(AriaDescriber, [{\n        type: Injectable,\n        args: [{ providedIn: 'root' }]\n    }], function () { return [{ type: undefined, decorators: [{\n                type: Inject,\n                args: [DOCUMENT]\n            }] }]; }, null); })();\n/** Gets a key that can be used to look messages up in the registry. */\nfunction getKey(message, role) {\n    return typeof message === 'string' ? `${role || ''}/${message}` : message;\n}\n/** Assigns a unique ID to an element, if it doesn't have one already. */\nfunction setMessageId(element) {\n    if (!element.id) {\n        element.id = `${CDK_DESCRIBEDBY_ID_PREFIX}-${nextId++}`;\n    }\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * This class manages keyboard events for selectable lists. If you pass it a query list\n * of items, it will set the active item correctly when arrow events occur.\n */\nclass ListKeyManager {\n    constructor(_items) {\n        this._items = _items;\n        this._activeItemIndex = -1;\n        this._activeItem = null;\n        this._wrap = false;\n        this._letterKeyStream = new Subject();\n        this._typeaheadSubscription = Subscription.EMPTY;\n        this._vertical = true;\n        this._allowedModifierKeys = [];\n        this._homeAndEnd = false;\n        /**\n         * Predicate function that can be used to check whether an item should be skipped\n         * by the key manager. By default, disabled items are skipped.\n         */\n        this._skipPredicateFn = (item) => item.disabled;\n        // Buffer for the letters that the user has pressed when the typeahead option is turned on.\n        this._pressedLetters = [];\n        /**\n         * Stream that emits any time the TAB key is pressed, so components can react\n         * when focus is shifted off of the list.\n         */\n        this.tabOut = new Subject();\n        /** Stream that emits whenever the active item of the list manager changes. */\n        this.change = new Subject();\n        // We allow for the items to be an array because, in some cases, the consumer may\n        // not have access to a QueryList of the items they want to manage (e.g. when the\n        // items aren't being collected via `ViewChildren` or `ContentChildren`).\n        if (_items instanceof QueryList) {\n            _items.changes.subscribe((newItems) => {\n                if (this._activeItem) {\n                    const itemArray = newItems.toArray();\n                    const newIndex = itemArray.indexOf(this._activeItem);\n                    if (newIndex > -1 && newIndex !== this._activeItemIndex) {\n                        this._activeItemIndex = newIndex;\n                    }\n                }\n            });\n        }\n    }\n    /**\n     * Sets the predicate function that determines which items should be skipped by the\n     * list key manager.\n     * @param predicate Function that determines whether the given item should be skipped.\n     */\n    skipPredicate(predicate) {\n        this._skipPredicateFn = predicate;\n        return this;\n    }\n    /**\n     * Configures wrapping mode, which determines whether the active item will wrap to\n     * the other end of list when there are no more items in the given direction.\n     * @param shouldWrap Whether the list should wrap when reaching the end.\n     */\n    withWrap(shouldWrap = true) {\n        this._wrap = shouldWrap;\n        return this;\n    }\n    /**\n     * Configures whether the key manager should be able to move the selection vertically.\n     * @param enabled Whether vertical selection should be enabled.\n     */\n    withVerticalOrientation(enabled = true) {\n        this._vertical = enabled;\n        return this;\n    }\n    /**\n     * Configures the key manager to move the selection horizontally.\n     * Passing in `null` will disable horizontal movement.\n     * @param direction Direction in which the selection can be moved.\n     */\n    withHorizontalOrientation(direction) {\n        this._horizontal = direction;\n        return this;\n    }\n    /**\n     * Modifier keys which are allowed to be held down and whose default actions will be prevented\n     * as the user is pressing the arrow keys. Defaults to not allowing any modifier keys.\n     */\n    withAllowedModifierKeys(keys) {\n        this._allowedModifierKeys = keys;\n        return this;\n    }\n    /**\n     * Turns on typeahead mode which allows users to set the active item by typing.\n     * @param debounceInterval Time to wait after the last keystroke before setting the active item.\n     */\n    withTypeAhead(debounceInterval = 200) {\n        if ((typeof ngDevMode === 'undefined' || ngDevMode) && (this._items.length &&\n            this._items.some(item => typeof item.getLabel !== 'function'))) {\n            throw Error('ListKeyManager items in typeahead mode must implement the `getLabel` method.');\n        }\n        this._typeaheadSubscription.unsubscribe();\n        // Debounce the presses of non-navigational keys, collect the ones that correspond to letters\n        // and convert those letters back into a string. Afterwards find the first item that starts\n        // with that string and select it.\n        this._typeaheadSubscription = this._letterKeyStream.pipe(tap(letter => this._pressedLetters.push(letter)), debounceTime(debounceInterval), filter(() => this._pressedLetters.length > 0), map(() => this._pressedLetters.join(''))).subscribe(inputString => {\n            const items = this._getItemsArray();\n            // Start at 1 because we want to start searching at the item immediately\n            // following the current active item.\n            for (let i = 1; i < items.length + 1; i++) {\n                const index = (this._activeItemIndex + i) % items.length;\n                const item = items[index];\n                if (!this._skipPredicateFn(item) &&\n                    item.getLabel().toUpperCase().trim().indexOf(inputString) === 0) {\n                    this.setActiveItem(index);\n                    break;\n                }\n            }\n            this._pressedLetters = [];\n        });\n        return this;\n    }\n    /**\n     * Configures the key manager to activate the first and last items\n     * respectively when the Home or End key is pressed.\n     * @param enabled Whether pressing the Home or End key activates the first/last item.\n     */\n    withHomeAndEnd(enabled = true) {\n        this._homeAndEnd = enabled;\n        return this;\n    }\n    setActiveItem(item) {\n        const previousActiveItem = this._activeItem;\n        this.updateActiveItem(item);\n        if (this._activeItem !== previousActiveItem) {\n            this.change.next(this._activeItemIndex);\n        }\n    }\n    /**\n     * Sets the active item depending on the key event passed in.\n     * @param event Keyboard event to be used for determining which element should be active.\n     */\n    onKeydown(event) {\n        const keyCode = event.keyCode;\n        const modifiers = ['altKey', 'ctrlKey', 'metaKey', 'shiftKey'];\n        const isModifierAllowed = modifiers.every(modifier => {\n            return !event[modifier] || this._allowedModifierKeys.indexOf(modifier) > -1;\n        });\n        switch (keyCode) {\n            case TAB:\n                this.tabOut.next();\n                return;\n            case DOWN_ARROW:\n                if (this._vertical && isModifierAllowed) {\n                    this.setNextItemActive();\n                    break;\n                }\n                else {\n                    return;\n                }\n            case UP_ARROW:\n                if (this._vertical && isModifierAllowed) {\n                    this.setPreviousItemActive();\n                    break;\n                }\n                else {\n                    return;\n                }\n            case RIGHT_ARROW:\n                if (this._horizontal && isModifierAllowed) {\n                    this._horizontal === 'rtl' ? this.setPreviousItemActive() : this.setNextItemActive();\n                    break;\n                }\n                else {\n                    return;\n                }\n            case LEFT_ARROW:\n                if (this._horizontal && isModifierAllowed) {\n                    this._horizontal === 'rtl' ? this.setNextItemActive() : this.setPreviousItemActive();\n                    break;\n                }\n                else {\n                    return;\n                }\n            case HOME:\n                if (this._homeAndEnd && isModifierAllowed) {\n                    this.setFirstItemActive();\n                    break;\n                }\n                else {\n                    return;\n                }\n            case END:\n                if (this._homeAndEnd && isModifierAllowed) {\n                    this.setLastItemActive();\n                    break;\n                }\n                else {\n                    return;\n                }\n            default:\n                if (isModifierAllowed || hasModifierKey(event, 'shiftKey')) {\n                    // Attempt to use the `event.key` which also maps it to the user's keyboard language,\n                    // otherwise fall back to resolving alphanumeric characters via the keyCode.\n                    if (event.key && event.key.length === 1) {\n                        this._letterKeyStream.next(event.key.toLocaleUpperCase());\n                    }\n                    else if ((keyCode >= A && keyCode <= Z) || (keyCode >= ZERO && keyCode <= NINE)) {\n                        this._letterKeyStream.next(String.fromCharCode(keyCode));\n                    }\n                }\n                // Note that we return here, in order to avoid preventing\n                // the default action of non-navigational keys.\n                return;\n        }\n        this._pressedLetters = [];\n        event.preventDefault();\n    }\n    /** Index of the currently active item. */\n    get activeItemIndex() {\n        return this._activeItemIndex;\n    }\n    /** The active item. */\n    get activeItem() {\n        return this._activeItem;\n    }\n    /** Gets whether the user is currently typing into the manager using the typeahead feature. */\n    isTyping() {\n        return this._pressedLetters.length > 0;\n    }\n    /** Sets the active item to the first enabled item in the list. */\n    setFirstItemActive() {\n        this._setActiveItemByIndex(0, 1);\n    }\n    /** Sets the active item to the last enabled item in the list. */\n    setLastItemActive() {\n        this._setActiveItemByIndex(this._items.length - 1, -1);\n    }\n    /** Sets the active item to the next enabled item in the list. */\n    setNextItemActive() {\n        this._activeItemIndex < 0 ? this.setFirstItemActive() : this._setActiveItemByDelta(1);\n    }\n    /** Sets the active item to a previous enabled item in the list. */\n    setPreviousItemActive() {\n        this._activeItemIndex < 0 && this._wrap ? this.setLastItemActive()\n            : this._setActiveItemByDelta(-1);\n    }\n    updateActiveItem(item) {\n        const itemArray = this._getItemsArray();\n        const index = typeof item === 'number' ? item : itemArray.indexOf(item);\n        const activeItem = itemArray[index];\n        // Explicitly check for `null` and `undefined` because other falsy values are valid.\n        this._activeItem = activeItem == null ? null : activeItem;\n        this._activeItemIndex = index;\n    }\n    /**\n     * This method sets the active item, given a list of items and the delta between the\n     * currently active item and the new active item. It will calculate differently\n     * depending on whether wrap mode is turned on.\n     */\n    _setActiveItemByDelta(delta) {\n        this._wrap ? this._setActiveInWrapMode(delta) : this._setActiveInDefaultMode(delta);\n    }\n    /**\n     * Sets the active item properly given \"wrap\" mode. In other words, it will continue to move\n     * down the list until it finds an item that is not disabled, and it will wrap if it\n     * encounters either end of the list.\n     */\n    _setActiveInWrapMode(delta) {\n        const items = this._getItemsArray();\n        for (let i = 1; i <= items.length; i++) {\n            const index = (this._activeItemIndex + (delta * i) + items.length) % items.length;\n            const item = items[index];\n            if (!this._skipPredicateFn(item)) {\n                this.setActiveItem(index);\n                return;\n            }\n        }\n    }\n    /**\n     * Sets the active item properly given the default mode. In other words, it will\n     * continue to move down the list until it finds an item that is not disabled. If\n     * it encounters either end of the list, it will stop and not wrap.\n     */\n    _setActiveInDefaultMode(delta) {\n        this._setActiveItemByIndex(this._activeItemIndex + delta, delta);\n    }\n    /**\n     * Sets the active item to the first enabled item starting at the index specified. If the\n     * item is disabled, it will move in the fallbackDelta direction until it either\n     * finds an enabled item or encounters the end of the list.\n     */\n    _setActiveItemByIndex(index, fallbackDelta) {\n        const items = this._getItemsArray();\n        if (!items[index]) {\n            return;\n        }\n        while (this._skipPredicateFn(items[index])) {\n            index += fallbackDelta;\n            if (!items[index]) {\n                return;\n            }\n        }\n        this.setActiveItem(index);\n    }\n    /** Returns the items as an array. */\n    _getItemsArray() {\n        return this._items instanceof QueryList ? this._items.toArray() : this._items;\n    }\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nclass ActiveDescendantKeyManager extends ListKeyManager {\n    setActiveItem(index) {\n        if (this.activeItem) {\n            this.activeItem.setInactiveStyles();\n        }\n        super.setActiveItem(index);\n        if (this.activeItem) {\n            this.activeItem.setActiveStyles();\n        }\n    }\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nclass FocusKeyManager extends ListKeyManager {\n    constructor() {\n        super(...arguments);\n        this._origin = 'program';\n    }\n    /**\n     * Sets the focus origin that will be passed in to the items for any subsequent `focus` calls.\n     * @param origin Focus origin to be used when focusing items.\n     */\n    setFocusOrigin(origin) {\n        this._origin = origin;\n        return this;\n    }\n    setActiveItem(item) {\n        super.setActiveItem(item);\n        if (this.activeItem) {\n            this.activeItem.focus(this._origin);\n        }\n    }\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Configuration for the isFocusable method.\n */\nclass IsFocusableConfig {\n    constructor() {\n        /**\n         * Whether to count an element as focusable even if it is not currently visible.\n         */\n        this.ignoreVisibility = false;\n    }\n}\n// The InteractivityChecker leans heavily on the ally.js accessibility utilities.\n// Methods like `isTabbable` are only covering specific edge-cases for the browsers which are\n// supported.\n/**\n * Utility for checking the interactivity of an element, such as whether is is focusable or\n * tabbable.\n */\nclass InteractivityChecker {\n    constructor(_platform) {\n        this._platform = _platform;\n    }\n    /**\n     * Gets whether an element is disabled.\n     *\n     * @param element Element to be checked.\n     * @returns Whether the element is disabled.\n     */\n    isDisabled(element) {\n        // This does not capture some cases, such as a non-form control with a disabled attribute or\n        // a form control inside of a disabled form, but should capture the most common cases.\n        return element.hasAttribute('disabled');\n    }\n    /**\n     * Gets whether an element is visible for the purposes of interactivity.\n     *\n     * This will capture states like `display: none` and `visibility: hidden`, but not things like\n     * being clipped by an `overflow: hidden` parent or being outside the viewport.\n     *\n     * @returns Whether the element is visible.\n     */\n    isVisible(element) {\n        return hasGeometry(element) && getComputedStyle(element).visibility === 'visible';\n    }\n    /**\n     * Gets whether an element can be reached via Tab key.\n     * Assumes that the element has already been checked with isFocusable.\n     *\n     * @param element Element to be checked.\n     * @returns Whether the element is tabbable.\n     */\n    isTabbable(element) {\n        // Nothing is tabbable on the server 😎\n        if (!this._platform.isBrowser) {\n            return false;\n        }\n        const frameElement = getFrameElement(getWindow(element));\n        if (frameElement) {\n            // Frame elements inherit their tabindex onto all child elements.\n            if (getTabIndexValue(frameElement) === -1) {\n                return false;\n            }\n            // Browsers disable tabbing to an element inside of an invisible frame.\n            if (!this.isVisible(frameElement)) {\n                return false;\n            }\n        }\n        let nodeName = element.nodeName.toLowerCase();\n        let tabIndexValue = getTabIndexValue(element);\n        if (element.hasAttribute('contenteditable')) {\n            return tabIndexValue !== -1;\n        }\n        if (nodeName === 'iframe' || nodeName === 'object') {\n            // The frame or object's content may be tabbable depending on the content, but it's\n            // not possibly to reliably detect the content of the frames. We always consider such\n            // elements as non-tabbable.\n            return false;\n        }\n        // In iOS, the browser only considers some specific elements as tabbable.\n        if (this._platform.WEBKIT && this._platform.IOS && !isPotentiallyTabbableIOS(element)) {\n            return false;\n        }\n        if (nodeName === 'audio') {\n            // Audio elements without controls enabled are never tabbable, regardless\n            // of the tabindex attribute explicitly being set.\n            if (!element.hasAttribute('controls')) {\n                return false;\n            }\n            // Audio elements with controls are by default tabbable unless the\n            // tabindex attribute is set to `-1` explicitly.\n            return tabIndexValue !== -1;\n        }\n        if (nodeName === 'video') {\n            // For all video elements, if the tabindex attribute is set to `-1`, the video\n            // is not tabbable. Note: We cannot rely on the default `HTMLElement.tabIndex`\n            // property as that one is set to `-1` in Chrome, Edge and Safari v13.1. The\n            // tabindex attribute is the source of truth here.\n            if (tabIndexValue === -1) {\n                return false;\n            }\n            // If the tabindex is explicitly set, and not `-1` (as per check before), the\n            // video element is always tabbable (regardless of whether it has controls or not).\n            if (tabIndexValue !== null) {\n                return true;\n            }\n            // Otherwise (when no explicit tabindex is set), a video is only tabbable if it\n            // has controls enabled. Firefox is special as videos are always tabbable regardless\n            // of whether there are controls or not.\n            return this._platform.FIREFOX || element.hasAttribute('controls');\n        }\n        return element.tabIndex >= 0;\n    }\n    /**\n     * Gets whether an element can be focused by the user.\n     *\n     * @param element Element to be checked.\n     * @param config The config object with options to customize this method's behavior\n     * @returns Whether the element is focusable.\n     */\n    isFocusable(element, config) {\n        // Perform checks in order of left to most expensive.\n        // Again, naive approach that does not capture many edge cases and browser quirks.\n        return isPotentiallyFocusable(element) && !this.isDisabled(element) &&\n            ((config === null || config === void 0 ? void 0 : config.ignoreVisibility) || this.isVisible(element));\n    }\n}\nInteractivityChecker.ɵfac = function InteractivityChecker_Factory(t) { return new (t || InteractivityChecker)(ɵngcc0.ɵɵinject(ɵngcc1.Platform)); };\nInteractivityChecker.ɵprov = i0.ɵɵdefineInjectable({ factory: function InteractivityChecker_Factory() { return new InteractivityChecker(i0.ɵɵinject(i1.Platform)); }, token: InteractivityChecker, providedIn: \"root\" });\nInteractivityChecker.ctorParameters = () => [\n    { type: Platform }\n];\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(InteractivityChecker, [{\n        type: Injectable,\n        args: [{ providedIn: 'root' }]\n    }], function () { return [{ type: ɵngcc1.Platform }]; }, null); })();\n/**\n * Returns the frame element from a window object. Since browsers like MS Edge throw errors if\n * the frameElement property is being accessed from a different host address, this property\n * should be accessed carefully.\n */\nfunction getFrameElement(window) {\n    try {\n        return window.frameElement;\n    }\n    catch (_a) {\n        return null;\n    }\n}\n/** Checks whether the specified element has any geometry / rectangles. */\nfunction hasGeometry(element) {\n    // Use logic from jQuery to check for an invisible element.\n    // See https://github.com/jquery/jquery/blob/master/src/css/hiddenVisibleSelectors.js#L12\n    return !!(element.offsetWidth || element.offsetHeight ||\n        (typeof element.getClientRects === 'function' && element.getClientRects().length));\n}\n/** Gets whether an element's  */\nfunction isNativeFormElement(element) {\n    let nodeName = element.nodeName.toLowerCase();\n    return nodeName === 'input' ||\n        nodeName === 'select' ||\n        nodeName === 'button' ||\n        nodeName === 'textarea';\n}\n/** Gets whether an element is an `<input type=\"hidden\">`. */\nfunction isHiddenInput(element) {\n    return isInputElement(element) && element.type == 'hidden';\n}\n/** Gets whether an element is an anchor that has an href attribute. */\nfunction isAnchorWithHref(element) {\n    return isAnchorElement(element) && element.hasAttribute('href');\n}\n/** Gets whether an element is an input element. */\nfunction isInputElement(element) {\n    return element.nodeName.toLowerCase() == 'input';\n}\n/** Gets whether an element is an anchor element. */\nfunction isAnchorElement(element) {\n    return element.nodeName.toLowerCase() == 'a';\n}\n/** Gets whether an element has a valid tabindex. */\nfunction hasValidTabIndex(element) {\n    if (!element.hasAttribute('tabindex') || element.tabIndex === undefined) {\n        return false;\n    }\n    let tabIndex = element.getAttribute('tabindex');\n    // IE11 parses tabindex=\"\" as the value \"-32768\"\n    if (tabIndex == '-32768') {\n        return false;\n    }\n    return !!(tabIndex && !isNaN(parseInt(tabIndex, 10)));\n}\n/**\n * Returns the parsed tabindex from the element attributes instead of returning the\n * evaluated tabindex from the browsers defaults.\n */\nfunction getTabIndexValue(element) {\n    if (!hasValidTabIndex(element)) {\n        return null;\n    }\n    // See browser issue in Gecko https://bugzilla.mozilla.org/show_bug.cgi?id=1128054\n    const tabIndex = parseInt(element.getAttribute('tabindex') || '', 10);\n    return isNaN(tabIndex) ? -1 : tabIndex;\n}\n/** Checks whether the specified element is potentially tabbable on iOS */\nfunction isPotentiallyTabbableIOS(element) {\n    let nodeName = element.nodeName.toLowerCase();\n    let inputType = nodeName === 'input' && element.type;\n    return inputType === 'text'\n        || inputType === 'password'\n        || nodeName === 'select'\n        || nodeName === 'textarea';\n}\n/**\n * Gets whether an element is potentially focusable without taking current visible/disabled state\n * into account.\n */\nfunction isPotentiallyFocusable(element) {\n    // Inputs are potentially focusable *unless* they're type=\"hidden\".\n    if (isHiddenInput(element)) {\n        return false;\n    }\n    return isNativeFormElement(element) ||\n        isAnchorWithHref(element) ||\n        element.hasAttribute('contenteditable') ||\n        hasValidTabIndex(element);\n}\n/** Gets the parent window of a DOM node with regards of being inside of an iframe. */\nfunction getWindow(node) {\n    // ownerDocument is null if `node` itself *is* a document.\n    return node.ownerDocument && node.ownerDocument.defaultView || window;\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Class that allows for trapping focus within a DOM element.\n *\n * This class currently uses a relatively simple approach to focus trapping.\n * It assumes that the tab order is the same as DOM order, which is not necessarily true.\n * Things like `tabIndex > 0`, flex `order`, and shadow roots can cause the two to be misaligned.\n *\n * @deprecated Use `ConfigurableFocusTrap` instead.\n * @breaking-change 11.0.0\n */\nclass FocusTrap {\n    constructor(_element, _checker, _ngZone, _document, deferAnchors = false) {\n        this._element = _element;\n        this._checker = _checker;\n        this._ngZone = _ngZone;\n        this._document = _document;\n        this._hasAttached = false;\n        // Event listeners for the anchors. Need to be regular functions so that we can unbind them later.\n        this.startAnchorListener = () => this.focusLastTabbableElement();\n        this.endAnchorListener = () => this.focusFirstTabbableElement();\n        this._enabled = true;\n        if (!deferAnchors) {\n            this.attachAnchors();\n        }\n    }\n    /** Whether the focus trap is active. */\n    get enabled() { return this._enabled; }\n    set enabled(value) {\n        this._enabled = value;\n        if (this._startAnchor && this._endAnchor) {\n            this._toggleAnchorTabIndex(value, this._startAnchor);\n            this._toggleAnchorTabIndex(value, this._endAnchor);\n        }\n    }\n    /** Destroys the focus trap by cleaning up the anchors. */\n    destroy() {\n        const startAnchor = this._startAnchor;\n        const endAnchor = this._endAnchor;\n        if (startAnchor) {\n            startAnchor.removeEventListener('focus', this.startAnchorListener);\n            if (startAnchor.parentNode) {\n                startAnchor.parentNode.removeChild(startAnchor);\n            }\n        }\n        if (endAnchor) {\n            endAnchor.removeEventListener('focus', this.endAnchorListener);\n            if (endAnchor.parentNode) {\n                endAnchor.parentNode.removeChild(endAnchor);\n            }\n        }\n        this._startAnchor = this._endAnchor = null;\n        this._hasAttached = false;\n    }\n    /**\n     * Inserts the anchors into the DOM. This is usually done automatically\n     * in the constructor, but can be deferred for cases like directives with `*ngIf`.\n     * @returns Whether the focus trap managed to attach successfully. This may not be the case\n     * if the target element isn't currently in the DOM.\n     */\n    attachAnchors() {\n        // If we're not on the browser, there can be no focus to trap.\n        if (this._hasAttached) {\n            return true;\n        }\n        this._ngZone.runOutsideAngular(() => {\n            if (!this._startAnchor) {\n                this._startAnchor = this._createAnchor();\n                this._startAnchor.addEventListener('focus', this.startAnchorListener);\n            }\n            if (!this._endAnchor) {\n                this._endAnchor = this._createAnchor();\n                this._endAnchor.addEventListener('focus', this.endAnchorListener);\n            }\n        });\n        if (this._element.parentNode) {\n            this._element.parentNode.insertBefore(this._startAnchor, this._element);\n            this._element.parentNode.insertBefore(this._endAnchor, this._element.nextSibling);\n            this._hasAttached = true;\n        }\n        return this._hasAttached;\n    }\n    /**\n     * Waits for the zone to stabilize, then either focuses the first element that the\n     * user specified, or the first tabbable element.\n     * @returns Returns a promise that resolves with a boolean, depending\n     * on whether focus was moved successfully.\n     */\n    focusInitialElementWhenReady(options) {\n        return new Promise(resolve => {\n            this._executeOnStable(() => resolve(this.focusInitialElement(options)));\n        });\n    }\n    /**\n     * Waits for the zone to stabilize, then focuses\n     * the first tabbable element within the focus trap region.\n     * @returns Returns a promise that resolves with a boolean, depending\n     * on whether focus was moved successfully.\n     */\n    focusFirstTabbableElementWhenReady(options) {\n        return new Promise(resolve => {\n            this._executeOnStable(() => resolve(this.focusFirstTabbableElement(options)));\n        });\n    }\n    /**\n     * Waits for the zone to stabilize, then focuses\n     * the last tabbable element within the focus trap region.\n     * @returns Returns a promise that resolves with a boolean, depending\n     * on whether focus was moved successfully.\n     */\n    focusLastTabbableElementWhenReady(options) {\n        return new Promise(resolve => {\n            this._executeOnStable(() => resolve(this.focusLastTabbableElement(options)));\n        });\n    }\n    /**\n     * Get the specified boundary element of the trapped region.\n     * @param bound The boundary to get (start or end of trapped region).\n     * @returns The boundary element.\n     */\n    _getRegionBoundary(bound) {\n        // Contains the deprecated version of selector, for temporary backwards comparability.\n        let markers = this._element.querySelectorAll(`[cdk-focus-region-${bound}], ` +\n            `[cdkFocusRegion${bound}], ` +\n            `[cdk-focus-${bound}]`);\n        for (let i = 0; i < markers.length; i++) {\n            // @breaking-change 8.0.0\n            if (markers[i].hasAttribute(`cdk-focus-${bound}`)) {\n                console.warn(`Found use of deprecated attribute 'cdk-focus-${bound}', ` +\n                    `use 'cdkFocusRegion${bound}' instead. The deprecated ` +\n                    `attribute will be removed in 8.0.0.`, markers[i]);\n            }\n            else if (markers[i].hasAttribute(`cdk-focus-region-${bound}`)) {\n                console.warn(`Found use of deprecated attribute 'cdk-focus-region-${bound}', ` +\n                    `use 'cdkFocusRegion${bound}' instead. The deprecated attribute ` +\n                    `will be removed in 8.0.0.`, markers[i]);\n            }\n        }\n        if (bound == 'start') {\n            return markers.length ? markers[0] : this._getFirstTabbableElement(this._element);\n        }\n        return markers.length ?\n            markers[markers.length - 1] : this._getLastTabbableElement(this._element);\n    }\n    /**\n     * Focuses the element that should be focused when the focus trap is initialized.\n     * @returns Whether focus was moved successfully.\n     */\n    focusInitialElement(options) {\n        // Contains the deprecated version of selector, for temporary backwards comparability.\n        const redirectToElement = this._element.querySelector(`[cdk-focus-initial], ` +\n            `[cdkFocusInitial]`);\n        if (redirectToElement) {\n            // @breaking-change 8.0.0\n            if (redirectToElement.hasAttribute(`cdk-focus-initial`)) {\n                console.warn(`Found use of deprecated attribute 'cdk-focus-initial', ` +\n                    `use 'cdkFocusInitial' instead. The deprecated attribute ` +\n                    `will be removed in 8.0.0`, redirectToElement);\n            }\n            // Warn the consumer if the element they've pointed to\n            // isn't focusable, when not in production mode.\n            if ((typeof ngDevMode === 'undefined' || ngDevMode) &&\n                !this._checker.isFocusable(redirectToElement)) {\n                console.warn(`Element matching '[cdkFocusInitial]' is not focusable.`, redirectToElement);\n            }\n            if (!this._checker.isFocusable(redirectToElement)) {\n                const focusableChild = this._getFirstTabbableElement(redirectToElement);\n                focusableChild === null || focusableChild === void 0 ? void 0 : focusableChild.focus(options);\n                return !!focusableChild;\n            }\n            redirectToElement.focus(options);\n            return true;\n        }\n        return this.focusFirstTabbableElement(options);\n    }\n    /**\n     * Focuses the first tabbable element within the focus trap region.\n     * @returns Whether focus was moved successfully.\n     */\n    focusFirstTabbableElement(options) {\n        const redirectToElement = this._getRegionBoundary('start');\n        if (redirectToElement) {\n            redirectToElement.focus(options);\n        }\n        return !!redirectToElement;\n    }\n    /**\n     * Focuses the last tabbable element within the focus trap region.\n     * @returns Whether focus was moved successfully.\n     */\n    focusLastTabbableElement(options) {\n        const redirectToElement = this._getRegionBoundary('end');\n        if (redirectToElement) {\n            redirectToElement.focus(options);\n        }\n        return !!redirectToElement;\n    }\n    /**\n     * Checks whether the focus trap has successfully been attached.\n     */\n    hasAttached() {\n        return this._hasAttached;\n    }\n    /** Get the first tabbable element from a DOM subtree (inclusive). */\n    _getFirstTabbableElement(root) {\n        if (this._checker.isFocusable(root) && this._checker.isTabbable(root)) {\n            return root;\n        }\n        // Iterate in DOM order. Note that IE doesn't have `children` for SVG so we fall\n        // back to `childNodes` which includes text nodes, comments etc.\n        let children = root.children || root.childNodes;\n        for (let i = 0; i < children.length; i++) {\n            let tabbableChild = children[i].nodeType === this._document.ELEMENT_NODE ?\n                this._getFirstTabbableElement(children[i]) :\n                null;\n            if (tabbableChild) {\n                return tabbableChild;\n            }\n        }\n        return null;\n    }\n    /** Get the last tabbable element from a DOM subtree (inclusive). */\n    _getLastTabbableElement(root) {\n        if (this._checker.isFocusable(root) && this._checker.isTabbable(root)) {\n            return root;\n        }\n        // Iterate in reverse DOM order.\n        let children = root.children || root.childNodes;\n        for (let i = children.length - 1; i >= 0; i--) {\n            let tabbableChild = children[i].nodeType === this._document.ELEMENT_NODE ?\n                this._getLastTabbableElement(children[i]) :\n                null;\n            if (tabbableChild) {\n                return tabbableChild;\n            }\n        }\n        return null;\n    }\n    /** Creates an anchor element. */\n    _createAnchor() {\n        const anchor = this._document.createElement('div');\n        this._toggleAnchorTabIndex(this._enabled, anchor);\n        anchor.classList.add('cdk-visually-hidden');\n        anchor.classList.add('cdk-focus-trap-anchor');\n        anchor.setAttribute('aria-hidden', 'true');\n        return anchor;\n    }\n    /**\n     * Toggles the `tabindex` of an anchor, based on the enabled state of the focus trap.\n     * @param isEnabled Whether the focus trap is enabled.\n     * @param anchor Anchor on which to toggle the tabindex.\n     */\n    _toggleAnchorTabIndex(isEnabled, anchor) {\n        // Remove the tabindex completely, rather than setting it to -1, because if the\n        // element has a tabindex, the user might still hit it when navigating with the arrow keys.\n        isEnabled ? anchor.setAttribute('tabindex', '0') : anchor.removeAttribute('tabindex');\n    }\n    /**\n     * Toggles the`tabindex` of both anchors to either trap Tab focus or allow it to escape.\n     * @param enabled: Whether the anchors should trap Tab.\n     */\n    toggleAnchors(enabled) {\n        if (this._startAnchor && this._endAnchor) {\n            this._toggleAnchorTabIndex(enabled, this._startAnchor);\n            this._toggleAnchorTabIndex(enabled, this._endAnchor);\n        }\n    }\n    /** Executes a function when the zone is stable. */\n    _executeOnStable(fn) {\n        if (this._ngZone.isStable) {\n            fn();\n        }\n        else {\n            this._ngZone.onStable.pipe(take(1)).subscribe(fn);\n        }\n    }\n}\n/**\n * Factory that allows easy instantiation of focus traps.\n * @deprecated Use `ConfigurableFocusTrapFactory` instead.\n * @breaking-change 11.0.0\n */\nclass FocusTrapFactory {\n    constructor(_checker, _ngZone, _document) {\n        this._checker = _checker;\n        this._ngZone = _ngZone;\n        this._document = _document;\n    }\n    /**\n     * Creates a focus-trapped region around the given element.\n     * @param element The element around which focus will be trapped.\n     * @param deferCaptureElements Defers the creation of focus-capturing elements to be done\n     *     manually by the user.\n     * @returns The created focus trap instance.\n     */\n    create(element, deferCaptureElements = false) {\n        return new FocusTrap(element, this._checker, this._ngZone, this._document, deferCaptureElements);\n    }\n}\nFocusTrapFactory.ɵfac = function FocusTrapFactory_Factory(t) { return new (t || FocusTrapFactory)(ɵngcc0.ɵɵinject(InteractivityChecker), ɵngcc0.ɵɵinject(ɵngcc0.NgZone), ɵngcc0.ɵɵinject(DOCUMENT)); };\nFocusTrapFactory.ɵprov = i0.ɵɵdefineInjectable({ factory: function FocusTrapFactory_Factory() { return new FocusTrapFactory(i0.ɵɵinject(InteractivityChecker), i0.ɵɵinject(i0.NgZone), i0.ɵɵinject(i2.DOCUMENT)); }, token: FocusTrapFactory, providedIn: \"root\" });\nFocusTrapFactory.ctorParameters = () => [\n    { type: InteractivityChecker },\n    { type: NgZone },\n    { type: undefined, decorators: [{ type: Inject, args: [DOCUMENT,] }] }\n];\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(FocusTrapFactory, [{\n        type: Injectable,\n        args: [{ providedIn: 'root' }]\n    }], function () { return [{ type: InteractivityChecker }, { type: ɵngcc0.NgZone }, { type: undefined, decorators: [{\n                type: Inject,\n                args: [DOCUMENT]\n            }] }]; }, null); })();\n/** Directive for trapping focus within a region. */\nclass CdkTrapFocus {\n    constructor(_elementRef, _focusTrapFactory, \n    /**\n     * @deprecated No longer being used. To be removed.\n     * @breaking-change 13.0.0\n     */\n    _document) {\n        this._elementRef = _elementRef;\n        this._focusTrapFactory = _focusTrapFactory;\n        /** Previously focused element to restore focus to upon destroy when using autoCapture. */\n        this._previouslyFocusedElement = null;\n        this.focusTrap = this._focusTrapFactory.create(this._elementRef.nativeElement, true);\n    }\n    /** Whether the focus trap is active. */\n    get enabled() { return this.focusTrap.enabled; }\n    set enabled(value) { this.focusTrap.enabled = coerceBooleanProperty(value); }\n    /**\n     * Whether the directive should automatically move focus into the trapped region upon\n     * initialization and return focus to the previous activeElement upon destruction.\n     */\n    get autoCapture() { return this._autoCapture; }\n    set autoCapture(value) { this._autoCapture = coerceBooleanProperty(value); }\n    ngOnDestroy() {\n        this.focusTrap.destroy();\n        // If we stored a previously focused element when using autoCapture, return focus to that\n        // element now that the trapped region is being destroyed.\n        if (this._previouslyFocusedElement) {\n            this._previouslyFocusedElement.focus();\n            this._previouslyFocusedElement = null;\n        }\n    }\n    ngAfterContentInit() {\n        this.focusTrap.attachAnchors();\n        if (this.autoCapture) {\n            this._captureFocus();\n        }\n    }\n    ngDoCheck() {\n        if (!this.focusTrap.hasAttached()) {\n            this.focusTrap.attachAnchors();\n        }\n    }\n    ngOnChanges(changes) {\n        const autoCaptureChange = changes['autoCapture'];\n        if (autoCaptureChange && !autoCaptureChange.firstChange && this.autoCapture &&\n            this.focusTrap.hasAttached()) {\n            this._captureFocus();\n        }\n    }\n    _captureFocus() {\n        this._previouslyFocusedElement = _getFocusedElementPierceShadowDom();\n        this.focusTrap.focusInitialElementWhenReady();\n    }\n}\nCdkTrapFocus.ɵfac = function CdkTrapFocus_Factory(t) { return new (t || CdkTrapFocus)(ɵngcc0.ɵɵdirectiveInject(ɵngcc0.ElementRef), ɵngcc0.ɵɵdirectiveInject(FocusTrapFactory), ɵngcc0.ɵɵdirectiveInject(DOCUMENT)); };\nCdkTrapFocus.ɵdir = ɵngcc0.ɵɵdefineDirective({ type: CdkTrapFocus, selectors: [[\"\", \"cdkTrapFocus\", \"\"]], inputs: { enabled: [\"cdkTrapFocus\", \"enabled\"], autoCapture: [\"cdkTrapFocusAutoCapture\", \"autoCapture\"] }, exportAs: [\"cdkTrapFocus\"], features: [ɵngcc0.ɵɵNgOnChangesFeature] });\nCdkTrapFocus.ctorParameters = () => [\n    { type: ElementRef },\n    { type: FocusTrapFactory },\n    { type: undefined, decorators: [{ type: Inject, args: [DOCUMENT,] }] }\n];\nCdkTrapFocus.propDecorators = {\n    enabled: [{ type: Input, args: ['cdkTrapFocus',] }],\n    autoCapture: [{ type: Input, args: ['cdkTrapFocusAutoCapture',] }]\n};\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(CdkTrapFocus, [{\n        type: Directive,\n        args: [{\n                selector: '[cdkTrapFocus]',\n                exportAs: 'cdkTrapFocus'\n            }]\n    }], function () { return [{ type: ɵngcc0.ElementRef }, { type: FocusTrapFactory }, { type: undefined, decorators: [{\n                type: Inject,\n                args: [DOCUMENT]\n            }] }]; }, { enabled: [{\n            type: Input,\n            args: ['cdkTrapFocus']\n        }], autoCapture: [{\n            type: Input,\n            args: ['cdkTrapFocusAutoCapture']\n        }] }); })();\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Class that allows for trapping focus within a DOM element.\n *\n * This class uses a strategy pattern that determines how it traps focus.\n * See FocusTrapInertStrategy.\n */\nclass ConfigurableFocusTrap extends FocusTrap {\n    constructor(_element, _checker, _ngZone, _document, _focusTrapManager, _inertStrategy, config) {\n        super(_element, _checker, _ngZone, _document, config.defer);\n        this._focusTrapManager = _focusTrapManager;\n        this._inertStrategy = _inertStrategy;\n        this._focusTrapManager.register(this);\n    }\n    /** Whether the FocusTrap is enabled. */\n    get enabled() { return this._enabled; }\n    set enabled(value) {\n        this._enabled = value;\n        if (this._enabled) {\n            this._focusTrapManager.register(this);\n        }\n        else {\n            this._focusTrapManager.deregister(this);\n        }\n    }\n    /** Notifies the FocusTrapManager that this FocusTrap will be destroyed. */\n    destroy() {\n        this._focusTrapManager.deregister(this);\n        super.destroy();\n    }\n    /** @docs-private Implemented as part of ManagedFocusTrap. */\n    _enable() {\n        this._inertStrategy.preventFocus(this);\n        this.toggleAnchors(true);\n    }\n    /** @docs-private Implemented as part of ManagedFocusTrap. */\n    _disable() {\n        this._inertStrategy.allowFocus(this);\n        this.toggleAnchors(false);\n    }\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** The injection token used to specify the inert strategy. */\nconst FOCUS_TRAP_INERT_STRATEGY = new InjectionToken('FOCUS_TRAP_INERT_STRATEGY');\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** IE 11 compatible closest implementation that is able to start from non-Element Nodes. */\nfunction closest(element, selector) {\n    if (!(element instanceof Node)) {\n        return null;\n    }\n    let curr = element;\n    while (curr != null && !(curr instanceof Element)) {\n        curr = curr.parentNode;\n    }\n    return curr && (hasNativeClosest ?\n        curr.closest(selector) : polyfillClosest(curr, selector));\n}\n/** Polyfill for browsers without Element.closest. */\nfunction polyfillClosest(element, selector) {\n    let curr = element;\n    while (curr != null && !(curr instanceof Element && matches(curr, selector))) {\n        curr = curr.parentNode;\n    }\n    return (curr || null);\n}\nconst hasNativeClosest = typeof Element != 'undefined' && !!Element.prototype.closest;\n/** IE 11 compatible matches implementation. */\nfunction matches(element, selector) {\n    return element.matches ?\n        element.matches(selector) :\n        element['msMatchesSelector'](selector);\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Lightweight FocusTrapInertStrategy that adds a document focus event\n * listener to redirect focus back inside the FocusTrap.\n */\nclass EventListenerFocusTrapInertStrategy {\n    constructor() {\n        /** Focus event handler. */\n        this._listener = null;\n    }\n    /** Adds a document event listener that keeps focus inside the FocusTrap. */\n    preventFocus(focusTrap) {\n        // Ensure there's only one listener per document\n        if (this._listener) {\n            focusTrap._document.removeEventListener('focus', this._listener, true);\n        }\n        this._listener = (e) => this._trapFocus(focusTrap, e);\n        focusTrap._ngZone.runOutsideAngular(() => {\n            focusTrap._document.addEventListener('focus', this._listener, true);\n        });\n    }\n    /** Removes the event listener added in preventFocus. */\n    allowFocus(focusTrap) {\n        if (!this._listener) {\n            return;\n        }\n        focusTrap._document.removeEventListener('focus', this._listener, true);\n        this._listener = null;\n    }\n    /**\n     * Refocuses the first element in the FocusTrap if the focus event target was outside\n     * the FocusTrap.\n     *\n     * This is an event listener callback. The event listener is added in runOutsideAngular,\n     * so all this code runs outside Angular as well.\n     */\n    _trapFocus(focusTrap, event) {\n        const target = event.target;\n        const focusTrapRoot = focusTrap._element;\n        // Don't refocus if target was in an overlay, because the overlay might be associated\n        // with an element inside the FocusTrap, ex. mat-select.\n        if (!focusTrapRoot.contains(target) && closest(target, 'div.cdk-overlay-pane') === null) {\n            // Some legacy FocusTrap usages have logic that focuses some element on the page\n            // just before FocusTrap is destroyed. For backwards compatibility, wait\n            // to be sure FocusTrap is still enabled before refocusing.\n            setTimeout(() => {\n                // Check whether focus wasn't put back into the focus trap while the timeout was pending.\n                if (focusTrap.enabled && !focusTrapRoot.contains(focusTrap._document.activeElement)) {\n                    focusTrap.focusFirstTabbableElement();\n                }\n            });\n        }\n    }\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Injectable that ensures only the most recently enabled FocusTrap is active. */\nclass FocusTrapManager {\n    constructor() {\n        // A stack of the FocusTraps on the page. Only the FocusTrap at the\n        // top of the stack is active.\n        this._focusTrapStack = [];\n    }\n    /**\n     * Disables the FocusTrap at the top of the stack, and then pushes\n     * the new FocusTrap onto the stack.\n     */\n    register(focusTrap) {\n        // Dedupe focusTraps that register multiple times.\n        this._focusTrapStack = this._focusTrapStack.filter((ft) => ft !== focusTrap);\n        let stack = this._focusTrapStack;\n        if (stack.length) {\n            stack[stack.length - 1]._disable();\n        }\n        stack.push(focusTrap);\n        focusTrap._enable();\n    }\n    /**\n     * Removes the FocusTrap from the stack, and activates the\n     * FocusTrap that is the new top of the stack.\n     */\n    deregister(focusTrap) {\n        focusTrap._disable();\n        const stack = this._focusTrapStack;\n        const i = stack.indexOf(focusTrap);\n        if (i !== -1) {\n            stack.splice(i, 1);\n            if (stack.length) {\n                stack[stack.length - 1]._enable();\n            }\n        }\n    }\n}\nFocusTrapManager.ɵfac = function FocusTrapManager_Factory(t) { return new (t || FocusTrapManager)(); };\nFocusTrapManager.ɵprov = i0.ɵɵdefineInjectable({ factory: function FocusTrapManager_Factory() { return new FocusTrapManager(); }, token: FocusTrapManager, providedIn: \"root\" });\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(FocusTrapManager, [{\n        type: Injectable,\n        args: [{ providedIn: 'root' }]\n    }], function () { return []; }, null); })();\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Factory that allows easy instantiation of configurable focus traps. */\nclass ConfigurableFocusTrapFactory {\n    constructor(_checker, _ngZone, _focusTrapManager, _document, _inertStrategy) {\n        this._checker = _checker;\n        this._ngZone = _ngZone;\n        this._focusTrapManager = _focusTrapManager;\n        this._document = _document;\n        // TODO split up the strategies into different modules, similar to DateAdapter.\n        this._inertStrategy = _inertStrategy || new EventListenerFocusTrapInertStrategy();\n    }\n    create(element, config = { defer: false }) {\n        let configObject;\n        if (typeof config === 'boolean') {\n            configObject = { defer: config };\n        }\n        else {\n            configObject = config;\n        }\n        return new ConfigurableFocusTrap(element, this._checker, this._ngZone, this._document, this._focusTrapManager, this._inertStrategy, configObject);\n    }\n}\nConfigurableFocusTrapFactory.ɵfac = function ConfigurableFocusTrapFactory_Factory(t) { return new (t || ConfigurableFocusTrapFactory)(ɵngcc0.ɵɵinject(InteractivityChecker), ɵngcc0.ɵɵinject(ɵngcc0.NgZone), ɵngcc0.ɵɵinject(FocusTrapManager), ɵngcc0.ɵɵinject(DOCUMENT), ɵngcc0.ɵɵinject(FOCUS_TRAP_INERT_STRATEGY, 8)); };\nConfigurableFocusTrapFactory.ɵprov = i0.ɵɵdefineInjectable({ factory: function ConfigurableFocusTrapFactory_Factory() { return new ConfigurableFocusTrapFactory(i0.ɵɵinject(InteractivityChecker), i0.ɵɵinject(i0.NgZone), i0.ɵɵinject(FocusTrapManager), i0.ɵɵinject(i2.DOCUMENT), i0.ɵɵinject(FOCUS_TRAP_INERT_STRATEGY, 8)); }, token: ConfigurableFocusTrapFactory, providedIn: \"root\" });\nConfigurableFocusTrapFactory.ctorParameters = () => [\n    { type: InteractivityChecker },\n    { type: NgZone },\n    { type: FocusTrapManager },\n    { type: undefined, decorators: [{ type: Inject, args: [DOCUMENT,] }] },\n    { type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [FOCUS_TRAP_INERT_STRATEGY,] }] }\n];\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(ConfigurableFocusTrapFactory, [{\n        type: Injectable,\n        args: [{ providedIn: 'root' }]\n    }], function () { return [{ type: InteractivityChecker }, { type: ɵngcc0.NgZone }, { type: FocusTrapManager }, { type: undefined, decorators: [{\n                type: Inject,\n                args: [DOCUMENT]\n            }] }, { type: undefined, decorators: [{\n                type: Optional\n            }, {\n                type: Inject,\n                args: [FOCUS_TRAP_INERT_STRATEGY]\n            }] }]; }, null); })();\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Gets whether an event could be a faked `mousedown` event dispatched by a screen reader. */\nfunction isFakeMousedownFromScreenReader(event) {\n    // Some screen readers will dispatch a fake `mousedown` event when pressing enter or space on\n    // a clickable element. We can distinguish these events when both `offsetX` and `offsetY` are\n    // zero. Note that there's an edge case where the user could click the 0x0 spot of the screen\n    // themselves, but that is unlikely to contain interaction elements. Historially we used to check\n    // `event.buttons === 0`, however that no longer works on recent versions of NVDA.\n    return event.offsetX === 0 && event.offsetY === 0;\n}\n/** Gets whether an event could be a faked `touchstart` event dispatched by a screen reader. */\nfunction isFakeTouchstartFromScreenReader(event) {\n    const touch = (event.touches && event.touches[0]) ||\n        (event.changedTouches && event.changedTouches[0]);\n    // A fake `touchstart` can be distinguished from a real one by looking at the `identifier`\n    // which is typically >= 0 on a real device versus -1 from a screen reader. Just to be safe,\n    // we can also look at `radiusX` and `radiusY`. This behavior was observed against a Windows 10\n    // device with a touch screen running NVDA v2020.4 and Firefox 85 or Chrome 88.\n    return !!touch && touch.identifier === -1 && (touch.radiusX == null || touch.radiusX === 1) &&\n        (touch.radiusY == null || touch.radiusY === 1);\n}\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Injectable options for the InputModalityDetector. These are shallowly merged with the default\n * options.\n */\nconst INPUT_MODALITY_DETECTOR_OPTIONS = new InjectionToken('cdk-input-modality-detector-options');\n/**\n * Default options for the InputModalityDetector.\n *\n * Modifier keys are ignored by default (i.e. when pressed won't cause the service to detect\n * keyboard input modality) for two reasons:\n *\n * 1. Modifier keys are commonly used with mouse to perform actions such as 'right click' or 'open\n *    in new tab', and are thus less representative of actual keyboard interaction.\n * 2. VoiceOver triggers some keyboard events when linearly navigating with Control + Option (but\n *    confusingly not with Caps Lock). Thus, to have parity with other screen readers, we ignore\n *    these keys so as to not update the input modality.\n *\n * Note that we do not by default ignore the right Meta key on Safari because it has the same key\n * code as the ContextMenu key on other browsers. When we switch to using event.key, we can\n * distinguish between the two.\n */\nconst INPUT_MODALITY_DETECTOR_DEFAULT_OPTIONS = {\n    ignoreKeys: [ALT, CONTROL, MAC_META, META, SHIFT],\n};\n/**\n * The amount of time needed to pass after a touchstart event in order for a subsequent mousedown\n * event to be attributed as mouse and not touch.\n *\n * This is the value used by AngularJS Material. Through trial and error (on iPhone 6S) they found\n * that a value of around 650ms seems appropriate.\n */\nconst TOUCH_BUFFER_MS = 650;\n/**\n * Event listener options that enable capturing and also mark the listener as passive if the browser\n * supports it.\n */\nconst modalityEventListenerOptions = normalizePassiveListenerOptions({\n    passive: true,\n    capture: true,\n});\n/**\n * Service that detects the user's input modality.\n *\n * This service does not update the input modality when a user navigates with a screen reader\n * (e.g. linear navigation with VoiceOver, object navigation / browse mode with NVDA, virtual PC\n * cursor mode with JAWS). This is in part due to technical limitations (i.e. keyboard events do not\n * fire as expected in these modes) but is also arguably the correct behavior. Navigating with a\n * screen reader is akin to visually scanning a page, and should not be interpreted as actual user\n * input interaction.\n *\n * When a user is not navigating but *interacting* with a screen reader, this service attempts to\n * update the input modality to keyboard, but in general this service's behavior is largely\n * undefined.\n */\nclass InputModalityDetector {\n    constructor(_platform, ngZone, document, options) {\n        this._platform = _platform;\n        /**\n         * The most recently detected input modality event target. Is null if no input modality has been\n         * detected or if the associated event target is null for some unknown reason.\n         */\n        this._mostRecentTarget = null;\n        /** The underlying BehaviorSubject that emits whenever an input modality is detected. */\n        this._modality = new BehaviorSubject(null);\n        /**\n         * The timestamp of the last touch input modality. Used to determine whether mousedown events\n         * should be attributed to mouse or touch.\n         */\n        this._lastTouchMs = 0;\n        /**\n         * Handles keydown events. Must be an arrow function in order to preserve the context when it gets\n         * bound.\n         */\n        this._onKeydown = (event) => {\n            var _a, _b;\n            // If this is one of the keys we should ignore, then ignore it and don't update the input\n            // modality to keyboard.\n            if ((_b = (_a = this._options) === null || _a === void 0 ? void 0 : _a.ignoreKeys) === null || _b === void 0 ? void 0 : _b.some(keyCode => keyCode === event.keyCode)) {\n                return;\n            }\n            this._modality.next('keyboard');\n            this._mostRecentTarget = _getEventTarget(event);\n        };\n        /**\n         * Handles mousedown events. Must be an arrow function in order to preserve the context when it\n         * gets bound.\n         */\n        this._onMousedown = (event) => {\n            // Touches trigger both touch and mouse events, so we need to distinguish between mouse events\n            // that were triggered via mouse vs touch. To do so, check if the mouse event occurs closely\n            // after the previous touch event.\n            if (Date.now() - this._lastTouchMs < TOUCH_BUFFER_MS) {\n                return;\n            }\n            // Fake mousedown events are fired by some screen readers when controls are activated by the\n            // screen reader. Attribute them to keyboard input modality.\n            this._modality.next(isFakeMousedownFromScreenReader(event) ? 'keyboard' : 'mouse');\n            this._mostRecentTarget = _getEventTarget(event);\n        };\n        /**\n         * Handles touchstart events. Must be an arrow function in order to preserve the context when it\n         * gets bound.\n         */\n        this._onTouchstart = (event) => {\n            // Same scenario as mentioned in _onMousedown, but on touch screen devices, fake touchstart\n            // events are fired. Again, attribute to keyboard input modality.\n            if (isFakeTouchstartFromScreenReader(event)) {\n                this._modality.next('keyboard');\n                return;\n            }\n            // Store the timestamp of this touch event, as it's used to distinguish between mouse events\n            // triggered via mouse vs touch.\n            this._lastTouchMs = Date.now();\n            this._modality.next('touch');\n            this._mostRecentTarget = _getEventTarget(event);\n        };\n        this._options = Object.assign(Object.assign({}, INPUT_MODALITY_DETECTOR_DEFAULT_OPTIONS), options);\n        // Skip the first emission as it's null.\n        this.modalityDetected = this._modality.pipe(skip(1));\n        this.modalityChanged = this.modalityDetected.pipe(distinctUntilChanged());\n        // If we're not in a browser, this service should do nothing, as there's no relevant input\n        // modality to detect.\n        if (!_platform.isBrowser) {\n            return;\n        }\n        // Add the event listeners used to detect the user's input modality.\n        ngZone.runOutsideAngular(() => {\n            document.addEventListener('keydown', this._onKeydown, modalityEventListenerOptions);\n            document.addEventListener('mousedown', this._onMousedown, modalityEventListenerOptions);\n            document.addEventListener('touchstart', this._onTouchstart, modalityEventListenerOptions);\n        });\n    }\n    /** The most recently detected input modality. */\n    get mostRecentModality() {\n        return this._modality.value;\n    }\n    ngOnDestroy() {\n        if (!this._platform.isBrowser) {\n            return;\n        }\n        document.removeEventListener('keydown', this._onKeydown, modalityEventListenerOptions);\n        document.removeEventListener('mousedown', this._onMousedown, modalityEventListenerOptions);\n        document.removeEventListener('touchstart', this._onTouchstart, modalityEventListenerOptions);\n    }\n}\nInputModalityDetector.ɵfac = function InputModalityDetector_Factory(t) { return new (t || InputModalityDetector)(ɵngcc0.ɵɵinject(ɵngcc1.Platform), ɵngcc0.ɵɵinject(ɵngcc0.NgZone), ɵngcc0.ɵɵinject(DOCUMENT), ɵngcc0.ɵɵinject(INPUT_MODALITY_DETECTOR_OPTIONS, 8)); };\nInputModalityDetector.ɵprov = i0.ɵɵdefineInjectable({ factory: function InputModalityDetector_Factory() { return new InputModalityDetector(i0.ɵɵinject(i1.Platform), i0.ɵɵinject(i0.NgZone), i0.ɵɵinject(i2.DOCUMENT), i0.ɵɵinject(INPUT_MODALITY_DETECTOR_OPTIONS, 8)); }, token: InputModalityDetector, providedIn: \"root\" });\nInputModalityDetector.ctorParameters = () => [\n    { type: Platform },\n    { type: NgZone },\n    { type: Document, decorators: [{ type: Inject, args: [DOCUMENT,] }] },\n    { type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [INPUT_MODALITY_DETECTOR_OPTIONS,] }] }\n];\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(InputModalityDetector, [{\n        type: Injectable,\n        args: [{ providedIn: 'root' }]\n    }], function () { return [{ type: ɵngcc1.Platform }, { type: ɵngcc0.NgZone }, { type: Document, decorators: [{\n                type: Inject,\n                args: [DOCUMENT]\n            }] }, { type: undefined, decorators: [{\n                type: Optional\n            }, {\n                type: Inject,\n                args: [INPUT_MODALITY_DETECTOR_OPTIONS]\n            }] }]; }, null); })();\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nconst LIVE_ANNOUNCER_ELEMENT_TOKEN = new InjectionToken('liveAnnouncerElement', {\n    providedIn: 'root',\n    factory: LIVE_ANNOUNCER_ELEMENT_TOKEN_FACTORY,\n});\n/** @docs-private */\nfunction LIVE_ANNOUNCER_ELEMENT_TOKEN_FACTORY() {\n    return null;\n}\n/** Injection token that can be used to configure the default options for the LiveAnnouncer. */\nconst LIVE_ANNOUNCER_DEFAULT_OPTIONS = new InjectionToken('LIVE_ANNOUNCER_DEFAULT_OPTIONS');\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nclass LiveAnnouncer {\n    constructor(elementToken, _ngZone, _document, _defaultOptions) {\n        this._ngZone = _ngZone;\n        this._defaultOptions = _defaultOptions;\n        // We inject the live element and document as `any` because the constructor signature cannot\n        // reference browser globals (HTMLElement, Document) on non-browser environments, since having\n        // a class decorator causes TypeScript to preserve the constructor signature types.\n        this._document = _document;\n        this._liveElement = elementToken || this._createLiveElement();\n    }\n    announce(message, ...args) {\n        const defaultOptions = this._defaultOptions;\n        let politeness;\n        let duration;\n        if (args.length === 1 && typeof args[0] === 'number') {\n            duration = args[0];\n        }\n        else {\n            [politeness, duration] = args;\n        }\n        this.clear();\n        clearTimeout(this._previousTimeout);\n        if (!politeness) {\n            politeness =\n                (defaultOptions && defaultOptions.politeness) ? defaultOptions.politeness : 'polite';\n        }\n        if (duration == null && defaultOptions) {\n            duration = defaultOptions.duration;\n        }\n        // TODO: ensure changing the politeness works on all environments we support.\n        this._liveElement.setAttribute('aria-live', politeness);\n        // This 100ms timeout is necessary for some browser + screen-reader combinations:\n        // - Both JAWS and NVDA over IE11 will not announce anything without a non-zero timeout.\n        // - With Chrome and IE11 with NVDA or JAWS, a repeated (identical) message won't be read a\n        //   second time without clearing and then using a non-zero delay.\n        // (using JAWS 17 at time of this writing).\n        return this._ngZone.runOutsideAngular(() => {\n            return new Promise(resolve => {\n                clearTimeout(this._previousTimeout);\n                this._previousTimeout = setTimeout(() => {\n                    this._liveElement.textContent = message;\n                    resolve();\n                    if (typeof duration === 'number') {\n                        this._previousTimeout = setTimeout(() => this.clear(), duration);\n                    }\n                }, 100);\n            });\n        });\n    }\n    /**\n     * Clears the current text from the announcer element. Can be used to prevent\n     * screen readers from reading the text out again while the user is going\n     * through the page landmarks.\n     */\n    clear() {\n        if (this._liveElement) {\n            this._liveElement.textContent = '';\n        }\n    }\n    ngOnDestroy() {\n        clearTimeout(this._previousTimeout);\n        if (this._liveElement && this._liveElement.parentNode) {\n            this._liveElement.parentNode.removeChild(this._liveElement);\n            this._liveElement = null;\n        }\n    }\n    _createLiveElement() {\n        const elementClass = 'cdk-live-announcer-element';\n        const previousElements = this._document.getElementsByClassName(elementClass);\n        const liveEl = this._document.createElement('div');\n        // Remove any old containers. This can happen when coming in from a server-side-rendered page.\n        for (let i = 0; i < previousElements.length; i++) {\n            previousElements[i].parentNode.removeChild(previousElements[i]);\n        }\n        liveEl.classList.add(elementClass);\n        liveEl.classList.add('cdk-visually-hidden');\n        liveEl.setAttribute('aria-atomic', 'true');\n        liveEl.setAttribute('aria-live', 'polite');\n        this._document.body.appendChild(liveEl);\n        return liveEl;\n    }\n}\nLiveAnnouncer.ɵfac = function LiveAnnouncer_Factory(t) { return new (t || LiveAnnouncer)(ɵngcc0.ɵɵinject(LIVE_ANNOUNCER_ELEMENT_TOKEN, 8), ɵngcc0.ɵɵinject(ɵngcc0.NgZone), ɵngcc0.ɵɵinject(DOCUMENT), ɵngcc0.ɵɵinject(LIVE_ANNOUNCER_DEFAULT_OPTIONS, 8)); };\nLiveAnnouncer.ɵprov = i0.ɵɵdefineInjectable({ factory: function LiveAnnouncer_Factory() { return new LiveAnnouncer(i0.ɵɵinject(LIVE_ANNOUNCER_ELEMENT_TOKEN, 8), i0.ɵɵinject(i0.NgZone), i0.ɵɵinject(i2.DOCUMENT), i0.ɵɵinject(LIVE_ANNOUNCER_DEFAULT_OPTIONS, 8)); }, token: LiveAnnouncer, providedIn: \"root\" });\nLiveAnnouncer.ctorParameters = () => [\n    { type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [LIVE_ANNOUNCER_ELEMENT_TOKEN,] }] },\n    { type: NgZone },\n    { type: undefined, decorators: [{ type: Inject, args: [DOCUMENT,] }] },\n    { type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [LIVE_ANNOUNCER_DEFAULT_OPTIONS,] }] }\n];\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(LiveAnnouncer, [{\n        type: Injectable,\n        args: [{ providedIn: 'root' }]\n    }], function () { return [{ type: undefined, decorators: [{\n                type: Optional\n            }, {\n                type: Inject,\n                args: [LIVE_ANNOUNCER_ELEMENT_TOKEN]\n            }] }, { type: ɵngcc0.NgZone }, { type: undefined, decorators: [{\n                type: Inject,\n                args: [DOCUMENT]\n            }] }, { type: undefined, decorators: [{\n                type: Optional\n            }, {\n                type: Inject,\n                args: [LIVE_ANNOUNCER_DEFAULT_OPTIONS]\n            }] }]; }, null); })();\n/**\n * A directive that works similarly to aria-live, but uses the LiveAnnouncer to ensure compatibility\n * with a wider range of browsers and screen readers.\n */\nclass CdkAriaLive {\n    constructor(_elementRef, _liveAnnouncer, _contentObserver, _ngZone) {\n        this._elementRef = _elementRef;\n        this._liveAnnouncer = _liveAnnouncer;\n        this._contentObserver = _contentObserver;\n        this._ngZone = _ngZone;\n        this._politeness = 'polite';\n    }\n    /** The aria-live politeness level to use when announcing messages. */\n    get politeness() { return this._politeness; }\n    set politeness(value) {\n        this._politeness = value === 'off' || value === 'assertive' ? value : 'polite';\n        if (this._politeness === 'off') {\n            if (this._subscription) {\n                this._subscription.unsubscribe();\n                this._subscription = null;\n            }\n        }\n        else if (!this._subscription) {\n            this._subscription = this._ngZone.runOutsideAngular(() => {\n                return this._contentObserver\n                    .observe(this._elementRef)\n                    .subscribe(() => {\n                    // Note that we use textContent here, rather than innerText, in order to avoid a reflow.\n                    const elementText = this._elementRef.nativeElement.textContent;\n                    // The `MutationObserver` fires also for attribute\n                    // changes which we don't want to announce.\n                    if (elementText !== this._previousAnnouncedText) {\n                        this._liveAnnouncer.announce(elementText, this._politeness);\n                        this._previousAnnouncedText = elementText;\n                    }\n                });\n            });\n        }\n    }\n    ngOnDestroy() {\n        if (this._subscription) {\n            this._subscription.unsubscribe();\n        }\n    }\n}\nCdkAriaLive.ɵfac = function CdkAriaLive_Factory(t) { return new (t || CdkAriaLive)(ɵngcc0.ɵɵdirectiveInject(ɵngcc0.ElementRef), ɵngcc0.ɵɵdirectiveInject(LiveAnnouncer), ɵngcc0.ɵɵdirectiveInject(ɵngcc2.ContentObserver), ɵngcc0.ɵɵdirectiveInject(ɵngcc0.NgZone)); };\nCdkAriaLive.ɵdir = ɵngcc0.ɵɵdefineDirective({ type: CdkAriaLive, selectors: [[\"\", \"cdkAriaLive\", \"\"]], inputs: { politeness: [\"cdkAriaLive\", \"politeness\"] }, exportAs: [\"cdkAriaLive\"] });\nCdkAriaLive.ctorParameters = () => [\n    { type: ElementRef },\n    { type: LiveAnnouncer },\n    { type: ContentObserver },\n    { type: NgZone }\n];\nCdkAriaLive.propDecorators = {\n    politeness: [{ type: Input, args: ['cdkAriaLive',] }]\n};\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(CdkAriaLive, [{\n        type: Directive,\n        args: [{\n                selector: '[cdkAriaLive]',\n                exportAs: 'cdkAriaLive'\n            }]\n    }], function () { return [{ type: ɵngcc0.ElementRef }, { type: LiveAnnouncer }, { type: ɵngcc2.ContentObserver }, { type: ɵngcc0.NgZone }]; }, { politeness: [{\n            type: Input,\n            args: ['cdkAriaLive']\n        }] }); })();\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** InjectionToken for FocusMonitorOptions. */\nconst FOCUS_MONITOR_DEFAULT_OPTIONS = new InjectionToken('cdk-focus-monitor-default-options');\n/**\n * Event listener options that enable capturing and also\n * mark the listener as passive if the browser supports it.\n */\nconst captureEventListenerOptions = normalizePassiveListenerOptions({\n    passive: true,\n    capture: true\n});\n/** Monitors mouse and keyboard events to determine the cause of focus events. */\nclass FocusMonitor {\n    constructor(_ngZone, _platform, _inputModalityDetector, \n    /** @breaking-change 11.0.0 make document required */\n    document, options) {\n        this._ngZone = _ngZone;\n        this._platform = _platform;\n        this._inputModalityDetector = _inputModalityDetector;\n        /** The focus origin that the next focus event is a result of. */\n        this._origin = null;\n        /** Whether the window has just been focused. */\n        this._windowFocused = false;\n        /**\n         * Whether the origin was determined via a touch interaction. Necessary as properly attributing\n         * focus events to touch interactions requires special logic.\n         */\n        this._originFromTouchInteraction = false;\n        /** Map of elements being monitored to their info. */\n        this._elementInfo = new Map();\n        /** The number of elements currently being monitored. */\n        this._monitoredElementCount = 0;\n        /**\n         * Keeps track of the root nodes to which we've currently bound a focus/blur handler,\n         * as well as the number of monitored elements that they contain. We have to treat focus/blur\n         * handlers differently from the rest of the events, because the browser won't emit events\n         * to the document when focus moves inside of a shadow root.\n         */\n        this._rootNodeFocusListenerCount = new Map();\n        /**\n         * Event listener for `focus` events on the window.\n         * Needs to be an arrow function in order to preserve the context when it gets bound.\n         */\n        this._windowFocusListener = () => {\n            // Make a note of when the window regains focus, so we can\n            // restore the origin info for the focused element.\n            this._windowFocused = true;\n            this._windowFocusTimeoutId = setTimeout(() => this._windowFocused = false);\n        };\n        /** Subject for stopping our InputModalityDetector subscription. */\n        this._stopInputModalityDetector = new Subject();\n        /**\n         * Event listener for `focus` and 'blur' events on the document.\n         * Needs to be an arrow function in order to preserve the context when it gets bound.\n         */\n        this._rootNodeFocusAndBlurListener = (event) => {\n            const target = _getEventTarget(event);\n            const handler = event.type === 'focus' ? this._onFocus : this._onBlur;\n            // We need to walk up the ancestor chain in order to support `checkChildren`.\n            for (let element = target; element; element = element.parentElement) {\n                handler.call(this, event, element);\n            }\n        };\n        this._document = document;\n        this._detectionMode = (options === null || options === void 0 ? void 0 : options.detectionMode) || 0 /* IMMEDIATE */;\n    }\n    monitor(element, checkChildren = false) {\n        const nativeElement = coerceElement(element);\n        // Do nothing if we're not on the browser platform or the passed in node isn't an element.\n        if (!this._platform.isBrowser || nativeElement.nodeType !== 1) {\n            return of(null);\n        }\n        // If the element is inside the shadow DOM, we need to bind our focus/blur listeners to\n        // the shadow root, rather than the `document`, because the browser won't emit focus events\n        // to the `document`, if focus is moving within the same shadow root.\n        const rootNode = _getShadowRoot(nativeElement) || this._getDocument();\n        const cachedInfo = this._elementInfo.get(nativeElement);\n        // Check if we're already monitoring this element.\n        if (cachedInfo) {\n            if (checkChildren) {\n                // TODO(COMP-318): this can be problematic, because it'll turn all non-checkChildren\n                // observers into ones that behave as if `checkChildren` was turned on. We need a more\n                // robust solution.\n                cachedInfo.checkChildren = true;\n            }\n            return cachedInfo.subject;\n        }\n        // Create monitored element info.\n        const info = {\n            checkChildren: checkChildren,\n            subject: new Subject(),\n            rootNode\n        };\n        this._elementInfo.set(nativeElement, info);\n        this._registerGlobalListeners(info);\n        return info.subject;\n    }\n    stopMonitoring(element) {\n        const nativeElement = coerceElement(element);\n        const elementInfo = this._elementInfo.get(nativeElement);\n        if (elementInfo) {\n            elementInfo.subject.complete();\n            this._setClasses(nativeElement);\n            this._elementInfo.delete(nativeElement);\n            this._removeGlobalListeners(elementInfo);\n        }\n    }\n    focusVia(element, origin, options) {\n        const nativeElement = coerceElement(element);\n        const focusedElement = this._getDocument().activeElement;\n        // If the element is focused already, calling `focus` again won't trigger the event listener\n        // which means that the focus classes won't be updated. If that's the case, update the classes\n        // directly without waiting for an event.\n        if (nativeElement === focusedElement) {\n            this._getClosestElementsInfo(nativeElement)\n                .forEach(([currentElement, info]) => this._originChanged(currentElement, origin, info));\n        }\n        else {\n            this._setOrigin(origin);\n            // `focus` isn't available on the server\n            if (typeof nativeElement.focus === 'function') {\n                nativeElement.focus(options);\n            }\n        }\n    }\n    ngOnDestroy() {\n        this._elementInfo.forEach((_info, element) => this.stopMonitoring(element));\n    }\n    /** Access injected document if available or fallback to global document reference */\n    _getDocument() {\n        return this._document || document;\n    }\n    /** Use defaultView of injected document if available or fallback to global window reference */\n    _getWindow() {\n        const doc = this._getDocument();\n        return doc.defaultView || window;\n    }\n    _toggleClass(element, className, shouldSet) {\n        if (shouldSet) {\n            element.classList.add(className);\n        }\n        else {\n            element.classList.remove(className);\n        }\n    }\n    _getFocusOrigin(focusEventTarget) {\n        if (this._origin) {\n            // If the origin was realized via a touch interaction, we need to perform additional checks\n            // to determine whether the focus origin should be attributed to touch or program.\n            if (this._originFromTouchInteraction) {\n                return this._shouldBeAttributedToTouch(focusEventTarget) ? 'touch' : 'program';\n            }\n            else {\n                return this._origin;\n            }\n        }\n        // If the window has just regained focus, we can restore the most recent origin from before the\n        // window blurred. Otherwise, we've reached the point where we can't identify the source of the\n        // focus. This typically means one of two things happened:\n        //\n        // 1) The element was programmatically focused, or\n        // 2) The element was focused via screen reader navigation (which generally doesn't fire\n        //    events).\n        //\n        // Because we can't distinguish between these two cases, we default to setting `program`.\n        return (this._windowFocused && this._lastFocusOrigin) ? this._lastFocusOrigin : 'program';\n    }\n    /**\n     * Returns whether the focus event should be attributed to touch. Recall that in IMMEDIATE mode, a\n     * touch origin isn't immediately reset at the next tick (see _setOrigin). This means that when we\n     * handle a focus event following a touch interaction, we need to determine whether (1) the focus\n     * event was directly caused by the touch interaction or (2) the focus event was caused by a\n     * subsequent programmatic focus call triggered by the touch interaction.\n     * @param focusEventTarget The target of the focus event under examination.\n     */\n    _shouldBeAttributedToTouch(focusEventTarget) {\n        // Please note that this check is not perfect. Consider the following edge case:\n        //\n        // <div #parent tabindex=\"0\">\n        //   <div #child tabindex=\"0\" (click)=\"#parent.focus()\"></div>\n        // </div>\n        //\n        // Suppose there is a FocusMonitor in IMMEDIATE mode attached to #parent. When the user touches\n        // #child, #parent is programmatically focused. This code will attribute the focus to touch\n        // instead of program. This is a relatively minor edge-case that can be worked around by using\n        // focusVia(parent, 'program') to focus #parent.\n        return (this._detectionMode === 1 /* EVENTUAL */) ||\n            !!(focusEventTarget === null || focusEventTarget === void 0 ? void 0 : focusEventTarget.contains(this._inputModalityDetector._mostRecentTarget));\n    }\n    /**\n     * Sets the focus classes on the element based on the given focus origin.\n     * @param element The element to update the classes on.\n     * @param origin The focus origin.\n     */\n    _setClasses(element, origin) {\n        this._toggleClass(element, 'cdk-focused', !!origin);\n        this._toggleClass(element, 'cdk-touch-focused', origin === 'touch');\n        this._toggleClass(element, 'cdk-keyboard-focused', origin === 'keyboard');\n        this._toggleClass(element, 'cdk-mouse-focused', origin === 'mouse');\n        this._toggleClass(element, 'cdk-program-focused', origin === 'program');\n    }\n    /**\n     * Updates the focus origin. If we're using immediate detection mode, we schedule an async\n     * function to clear the origin at the end of a timeout. The duration of the timeout depends on\n     * the origin being set.\n     * @param origin The origin to set.\n     * @param isFromInteraction Whether we are setting the origin from an interaction event.\n     */\n    _setOrigin(origin, isFromInteraction = false) {\n        this._ngZone.runOutsideAngular(() => {\n            this._origin = origin;\n            this._originFromTouchInteraction = (origin === 'touch') && isFromInteraction;\n            // If we're in IMMEDIATE mode, reset the origin at the next tick (or in `TOUCH_BUFFER_MS` ms\n            // for a touch event). We reset the origin at the next tick because Firefox focuses one tick\n            // after the interaction event. We wait `TOUCH_BUFFER_MS` ms before resetting the origin for\n            // a touch event because when a touch event is fired, the associated focus event isn't yet in\n            // the event queue. Before doing so, clear any pending timeouts.\n            if (this._detectionMode === 0 /* IMMEDIATE */) {\n                clearTimeout(this._originTimeoutId);\n                const ms = this._originFromTouchInteraction ? TOUCH_BUFFER_MS : 1;\n                this._originTimeoutId = setTimeout(() => this._origin = null, ms);\n            }\n        });\n    }\n    /**\n     * Handles focus events on a registered element.\n     * @param event The focus event.\n     * @param element The monitored element.\n     */\n    _onFocus(event, element) {\n        // NOTE(mmalerba): We currently set the classes based on the focus origin of the most recent\n        // focus event affecting the monitored element. If we want to use the origin of the first event\n        // instead we should check for the cdk-focused class here and return if the element already has\n        // it. (This only matters for elements that have includesChildren = true).\n        // If we are not counting child-element-focus as focused, make sure that the event target is the\n        // monitored element itself.\n        const elementInfo = this._elementInfo.get(element);\n        const focusEventTarget = _getEventTarget(event);\n        if (!elementInfo || (!elementInfo.checkChildren && element !== focusEventTarget)) {\n            return;\n        }\n        this._originChanged(element, this._getFocusOrigin(focusEventTarget), elementInfo);\n    }\n    /**\n     * Handles blur events on a registered element.\n     * @param event The blur event.\n     * @param element The monitored element.\n     */\n    _onBlur(event, element) {\n        // If we are counting child-element-focus as focused, make sure that we aren't just blurring in\n        // order to focus another child of the monitored element.\n        const elementInfo = this._elementInfo.get(element);\n        if (!elementInfo || (elementInfo.checkChildren && event.relatedTarget instanceof Node &&\n            element.contains(event.relatedTarget))) {\n            return;\n        }\n        this._setClasses(element);\n        this._emitOrigin(elementInfo.subject, null);\n    }\n    _emitOrigin(subject, origin) {\n        this._ngZone.run(() => subject.next(origin));\n    }\n    _registerGlobalListeners(elementInfo) {\n        if (!this._platform.isBrowser) {\n            return;\n        }\n        const rootNode = elementInfo.rootNode;\n        const rootNodeFocusListeners = this._rootNodeFocusListenerCount.get(rootNode) || 0;\n        if (!rootNodeFocusListeners) {\n            this._ngZone.runOutsideAngular(() => {\n                rootNode.addEventListener('focus', this._rootNodeFocusAndBlurListener, captureEventListenerOptions);\n                rootNode.addEventListener('blur', this._rootNodeFocusAndBlurListener, captureEventListenerOptions);\n            });\n        }\n        this._rootNodeFocusListenerCount.set(rootNode, rootNodeFocusListeners + 1);\n        // Register global listeners when first element is monitored.\n        if (++this._monitoredElementCount === 1) {\n            // Note: we listen to events in the capture phase so we\n            // can detect them even if the user stops propagation.\n            this._ngZone.runOutsideAngular(() => {\n                const window = this._getWindow();\n                window.addEventListener('focus', this._windowFocusListener);\n            });\n            // The InputModalityDetector is also just a collection of global listeners.\n            this._inputModalityDetector.modalityDetected\n                .pipe(takeUntil(this._stopInputModalityDetector))\n                .subscribe(modality => { this._setOrigin(modality, true /* isFromInteraction */); });\n        }\n    }\n    _removeGlobalListeners(elementInfo) {\n        const rootNode = elementInfo.rootNode;\n        if (this._rootNodeFocusListenerCount.has(rootNode)) {\n            const rootNodeFocusListeners = this._rootNodeFocusListenerCount.get(rootNode);\n            if (rootNodeFocusListeners > 1) {\n                this._rootNodeFocusListenerCount.set(rootNode, rootNodeFocusListeners - 1);\n            }\n            else {\n                rootNode.removeEventListener('focus', this._rootNodeFocusAndBlurListener, captureEventListenerOptions);\n                rootNode.removeEventListener('blur', this._rootNodeFocusAndBlurListener, captureEventListenerOptions);\n                this._rootNodeFocusListenerCount.delete(rootNode);\n            }\n        }\n        // Unregister global listeners when last element is unmonitored.\n        if (!--this._monitoredElementCount) {\n            const window = this._getWindow();\n            window.removeEventListener('focus', this._windowFocusListener);\n            // Equivalently, stop our InputModalityDetector subscription.\n            this._stopInputModalityDetector.next();\n            // Clear timeouts for all potentially pending timeouts to prevent the leaks.\n            clearTimeout(this._windowFocusTimeoutId);\n            clearTimeout(this._originTimeoutId);\n        }\n    }\n    /** Updates all the state on an element once its focus origin has changed. */\n    _originChanged(element, origin, elementInfo) {\n        this._setClasses(element, origin);\n        this._emitOrigin(elementInfo.subject, origin);\n        this._lastFocusOrigin = origin;\n    }\n    /**\n     * Collects the `MonitoredElementInfo` of a particular element and\n     * all of its ancestors that have enabled `checkChildren`.\n     * @param element Element from which to start the search.\n     */\n    _getClosestElementsInfo(element) {\n        const results = [];\n        this._elementInfo.forEach((info, currentElement) => {\n            if (currentElement === element || (info.checkChildren && currentElement.contains(element))) {\n                results.push([currentElement, info]);\n            }\n        });\n        return results;\n    }\n}\nFocusMonitor.ɵfac = function FocusMonitor_Factory(t) { return new (t || FocusMonitor)(ɵngcc0.ɵɵinject(ɵngcc0.NgZone), ɵngcc0.ɵɵinject(ɵngcc1.Platform), ɵngcc0.ɵɵinject(InputModalityDetector), ɵngcc0.ɵɵinject(DOCUMENT, 8), ɵngcc0.ɵɵinject(FOCUS_MONITOR_DEFAULT_OPTIONS, 8)); };\nFocusMonitor.ɵprov = i0.ɵɵdefineInjectable({ factory: function FocusMonitor_Factory() { return new FocusMonitor(i0.ɵɵinject(i0.NgZone), i0.ɵɵinject(i1.Platform), i0.ɵɵinject(InputModalityDetector), i0.ɵɵinject(i2.DOCUMENT, 8), i0.ɵɵinject(FOCUS_MONITOR_DEFAULT_OPTIONS, 8)); }, token: FocusMonitor, providedIn: \"root\" });\nFocusMonitor.ctorParameters = () => [\n    { type: NgZone },\n    { type: Platform },\n    { type: InputModalityDetector },\n    { type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [DOCUMENT,] }] },\n    { type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [FOCUS_MONITOR_DEFAULT_OPTIONS,] }] }\n];\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(FocusMonitor, [{\n        type: Injectable,\n        args: [{ providedIn: 'root' }]\n    }], function () { return [{ type: ɵngcc0.NgZone }, { type: ɵngcc1.Platform }, { type: InputModalityDetector }, { type: undefined, decorators: [{\n                type: Optional\n            }, {\n                type: Inject,\n                args: [DOCUMENT]\n            }] }, { type: undefined, decorators: [{\n                type: Optional\n            }, {\n                type: Inject,\n                args: [FOCUS_MONITOR_DEFAULT_OPTIONS]\n            }] }]; }, null); })();\n/**\n * Directive that determines how a particular element was focused (via keyboard, mouse, touch, or\n * programmatically) and adds corresponding classes to the element.\n *\n * There are two variants of this directive:\n * 1) cdkMonitorElementFocus: does not consider an element to be focused if one of its children is\n *    focused.\n * 2) cdkMonitorSubtreeFocus: considers an element focused if it or any of its children are focused.\n */\nclass CdkMonitorFocus {\n    constructor(_elementRef, _focusMonitor) {\n        this._elementRef = _elementRef;\n        this._focusMonitor = _focusMonitor;\n        this.cdkFocusChange = new EventEmitter();\n    }\n    ngAfterViewInit() {\n        const element = this._elementRef.nativeElement;\n        this._monitorSubscription = this._focusMonitor.monitor(element, element.nodeType === 1 && element.hasAttribute('cdkMonitorSubtreeFocus'))\n            .subscribe(origin => this.cdkFocusChange.emit(origin));\n    }\n    ngOnDestroy() {\n        this._focusMonitor.stopMonitoring(this._elementRef);\n        if (this._monitorSubscription) {\n            this._monitorSubscription.unsubscribe();\n        }\n    }\n}\nCdkMonitorFocus.ɵfac = function CdkMonitorFocus_Factory(t) { return new (t || CdkMonitorFocus)(ɵngcc0.ɵɵdirectiveInject(ɵngcc0.ElementRef), ɵngcc0.ɵɵdirectiveInject(FocusMonitor)); };\nCdkMonitorFocus.ɵdir = ɵngcc0.ɵɵdefineDirective({ type: CdkMonitorFocus, selectors: [[\"\", \"cdkMonitorElementFocus\", \"\"], [\"\", \"cdkMonitorSubtreeFocus\", \"\"]], outputs: { cdkFocusChange: \"cdkFocusChange\" } });\nCdkMonitorFocus.ctorParameters = () => [\n    { type: ElementRef },\n    { type: FocusMonitor }\n];\nCdkMonitorFocus.propDecorators = {\n    cdkFocusChange: [{ type: Output }]\n};\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(CdkMonitorFocus, [{\n        type: Directive,\n        args: [{\n                selector: '[cdkMonitorElementFocus], [cdkMonitorSubtreeFocus]'\n            }]\n    }], function () { return [{ type: ɵngcc0.ElementRef }, { type: FocusMonitor }]; }, { cdkFocusChange: [{\n            type: Output\n        }] }); })();\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** CSS class applied to the document body when in black-on-white high-contrast mode. */\nconst BLACK_ON_WHITE_CSS_CLASS = 'cdk-high-contrast-black-on-white';\n/** CSS class applied to the document body when in white-on-black high-contrast mode. */\nconst WHITE_ON_BLACK_CSS_CLASS = 'cdk-high-contrast-white-on-black';\n/** CSS class applied to the document body when in high-contrast mode. */\nconst HIGH_CONTRAST_MODE_ACTIVE_CSS_CLASS = 'cdk-high-contrast-active';\n/**\n * Service to determine whether the browser is currently in a high-contrast-mode environment.\n *\n * Microsoft Windows supports an accessibility feature called \"High Contrast Mode\". This mode\n * changes the appearance of all applications, including web applications, to dramatically increase\n * contrast.\n *\n * IE, Edge, and Firefox currently support this mode. Chrome does not support Windows High Contrast\n * Mode. This service does not detect high-contrast mode as added by the Chrome \"High Contrast\"\n * browser extension.\n */\nclass HighContrastModeDetector {\n    constructor(_platform, document) {\n        this._platform = _platform;\n        this._document = document;\n    }\n    /** Gets the current high-contrast-mode for the page. */\n    getHighContrastMode() {\n        if (!this._platform.isBrowser) {\n            return 0 /* NONE */;\n        }\n        // Create a test element with an arbitrary background-color that is neither black nor\n        // white; high-contrast mode will coerce the color to either black or white. Also ensure that\n        // appending the test element to the DOM does not affect layout by absolutely positioning it\n        const testElement = this._document.createElement('div');\n        testElement.style.backgroundColor = 'rgb(1,2,3)';\n        testElement.style.position = 'absolute';\n        this._document.body.appendChild(testElement);\n        // Get the computed style for the background color, collapsing spaces to normalize between\n        // browsers. Once we get this color, we no longer need the test element. Access the `window`\n        // via the document so we can fake it in tests. Note that we have extra null checks, because\n        // this logic will likely run during app bootstrap and throwing can break the entire app.\n        const documentWindow = this._document.defaultView || window;\n        const computedStyle = (documentWindow && documentWindow.getComputedStyle) ?\n            documentWindow.getComputedStyle(testElement) : null;\n        const computedColor = (computedStyle && computedStyle.backgroundColor || '').replace(/ /g, '');\n        this._document.body.removeChild(testElement);\n        switch (computedColor) {\n            case 'rgb(0,0,0)': return 2 /* WHITE_ON_BLACK */;\n            case 'rgb(255,255,255)': return 1 /* BLACK_ON_WHITE */;\n        }\n        return 0 /* NONE */;\n    }\n    /** Applies CSS classes indicating high-contrast mode to document body (browser-only). */\n    _applyBodyHighContrastModeCssClasses() {\n        if (!this._hasCheckedHighContrastMode && this._platform.isBrowser && this._document.body) {\n            const bodyClasses = this._document.body.classList;\n            // IE11 doesn't support `classList` operations with multiple arguments\n            bodyClasses.remove(HIGH_CONTRAST_MODE_ACTIVE_CSS_CLASS);\n            bodyClasses.remove(BLACK_ON_WHITE_CSS_CLASS);\n            bodyClasses.remove(WHITE_ON_BLACK_CSS_CLASS);\n            this._hasCheckedHighContrastMode = true;\n            const mode = this.getHighContrastMode();\n            if (mode === 1 /* BLACK_ON_WHITE */) {\n                bodyClasses.add(HIGH_CONTRAST_MODE_ACTIVE_CSS_CLASS);\n                bodyClasses.add(BLACK_ON_WHITE_CSS_CLASS);\n            }\n            else if (mode === 2 /* WHITE_ON_BLACK */) {\n                bodyClasses.add(HIGH_CONTRAST_MODE_ACTIVE_CSS_CLASS);\n                bodyClasses.add(WHITE_ON_BLACK_CSS_CLASS);\n            }\n        }\n    }\n}\nHighContrastModeDetector.ɵfac = function HighContrastModeDetector_Factory(t) { return new (t || HighContrastModeDetector)(ɵngcc0.ɵɵinject(ɵngcc1.Platform), ɵngcc0.ɵɵinject(DOCUMENT)); };\nHighContrastModeDetector.ɵprov = i0.ɵɵdefineInjectable({ factory: function HighContrastModeDetector_Factory() { return new HighContrastModeDetector(i0.ɵɵinject(i1.Platform), i0.ɵɵinject(i2.DOCUMENT)); }, token: HighContrastModeDetector, providedIn: \"root\" });\nHighContrastModeDetector.ctorParameters = () => [\n    { type: Platform },\n    { type: undefined, decorators: [{ type: Inject, args: [DOCUMENT,] }] }\n];\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(HighContrastModeDetector, [{\n        type: Injectable,\n        args: [{ providedIn: 'root' }]\n    }], function () { return [{ type: ɵngcc1.Platform }, { type: undefined, decorators: [{\n                type: Inject,\n                args: [DOCUMENT]\n            }] }]; }, null); })();\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nclass A11yModule {\n    constructor(highContrastModeDetector) {\n        highContrastModeDetector._applyBodyHighContrastModeCssClasses();\n    }\n}\nA11yModule.ɵmod = ɵngcc0.ɵɵdefineNgModule({ type: A11yModule });\nA11yModule.ɵinj = ɵngcc0.ɵɵdefineInjector({ factory: function A11yModule_Factory(t) { return new (t || A11yModule)(ɵngcc0.ɵɵinject(HighContrastModeDetector)); }, imports: [[PlatformModule, ObserversModule]] });\nA11yModule.ctorParameters = () => [\n    { type: HighContrastModeDetector }\n];\n(function () { (typeof ngJitMode === \"undefined\" || ngJitMode) && ɵngcc0.ɵɵsetNgModuleScope(A11yModule, { declarations: function () { return [CdkAriaLive, CdkTrapFocus, CdkMonitorFocus]; }, imports: function () { return [PlatformModule, ObserversModule]; }, exports: function () { return [CdkAriaLive, CdkTrapFocus, CdkMonitorFocus]; } }); })();\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(A11yModule, [{\n        type: NgModule,\n        args: [{\n                imports: [PlatformModule, ObserversModule],\n                declarations: [CdkAriaLive, CdkTrapFocus, CdkMonitorFocus],\n                exports: [CdkAriaLive, CdkTrapFocus, CdkMonitorFocus]\n            }]\n    }], function () { return [{ type: HighContrastModeDetector }]; }, null); })();\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { A11yModule, ActiveDescendantKeyManager, AriaDescriber, CDK_DESCRIBEDBY_HOST_ATTRIBUTE, CDK_DESCRIBEDBY_ID_PREFIX, CdkAriaLive, CdkMonitorFocus, CdkTrapFocus, ConfigurableFocusTrap, ConfigurableFocusTrapFactory, EventListenerFocusTrapInertStrategy, FOCUS_MONITOR_DEFAULT_OPTIONS, FOCUS_TRAP_INERT_STRATEGY, FocusKeyManager, FocusMonitor, FocusTrap, FocusTrapFactory, HighContrastModeDetector, INPUT_MODALITY_DETECTOR_DEFAULT_OPTIONS, INPUT_MODALITY_DETECTOR_OPTIONS, InputModalityDetector, InteractivityChecker, IsFocusableConfig, LIVE_ANNOUNCER_DEFAULT_OPTIONS, LIVE_ANNOUNCER_ELEMENT_TOKEN, LIVE_ANNOUNCER_ELEMENT_TOKEN_FACTORY, ListKeyManager, LiveAnnouncer, MESSAGES_CONTAINER_ID, isFakeMousedownFromScreenReader, isFakeTouchstartFromScreenReader, FocusTrapManager as ɵangular_material_src_cdk_a11y_a11y_a };\n\n//# sourceMappingURL=a11y.js.map","import { coerceNumberProperty, coerceElement } from '@angular/cdk/coercion';\nimport * as i0 from '@angular/core';\nimport { InjectionToken, Directive, forwardRef, Input, Injectable, NgZone, Optional, Inject, ElementRef, Component, ViewEncapsulation, ChangeDetectionStrategy, ChangeDetectorRef, Output, ViewChild, ViewContainerRef, TemplateRef, IterableDiffers, SkipSelf, NgModule } from '@angular/core';\nimport { Subject, of, Observable, fromEvent, animationFrameScheduler, asapScheduler, Subscription, isObservable } from 'rxjs';\nimport { distinctUntilChanged, auditTime, filter, takeUntil, startWith, pairwise, switchMap, shareReplay } from 'rxjs/operators';\nimport * as i1 from '@angular/cdk/platform';\nimport { Platform, getRtlScrollAxisType, supportsScrollBehavior, PlatformModule } from '@angular/cdk/platform';\nimport * as i2 from '@angular/common';\nimport { DOCUMENT } from '@angular/common';\nimport { Directionality, BidiModule } from '@angular/cdk/bidi';\nimport { isDataSource, ArrayDataSource, _VIEW_REPEATER_STRATEGY, _RecycleViewRepeaterStrategy } from '@angular/cdk/collections';\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** The injection token used to specify the virtual scrolling strategy. */\nimport * as ɵngcc0 from '@angular/core';\nimport * as ɵngcc1 from '@angular/cdk/platform';\nimport * as ɵngcc2 from '@angular/cdk/bidi';\nimport * as ɵngcc3 from '@angular/cdk/collections';\n\nconst _c0 = [\"contentWrapper\"];\nconst _c1 = [\"*\"];\nconst VIRTUAL_SCROLL_STRATEGY = new InjectionToken('VIRTUAL_SCROLL_STRATEGY');\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Virtual scrolling strategy for lists with items of known fixed size. */\nclass FixedSizeVirtualScrollStrategy {\n    /**\n     * @param itemSize The size of the items in the virtually scrolling list.\n     * @param minBufferPx The minimum amount of buffer (in pixels) before needing to render more\n     * @param maxBufferPx The amount of buffer (in pixels) to render when rendering more.\n     */\n    constructor(itemSize, minBufferPx, maxBufferPx) {\n        this._scrolledIndexChange = new Subject();\n        /** @docs-private Implemented as part of VirtualScrollStrategy. */\n        this.scrolledIndexChange = this._scrolledIndexChange.pipe(distinctUntilChanged());\n        /** The attached viewport. */\n        this._viewport = null;\n        this._itemSize = itemSize;\n        this._minBufferPx = minBufferPx;\n        this._maxBufferPx = maxBufferPx;\n    }\n    /**\n     * Attaches this scroll strategy to a viewport.\n     * @param viewport The viewport to attach this strategy to.\n     */\n    attach(viewport) {\n        this._viewport = viewport;\n        this._updateTotalContentSize();\n        this._updateRenderedRange();\n    }\n    /** Detaches this scroll strategy from the currently attached viewport. */\n    detach() {\n        this._scrolledIndexChange.complete();\n        this._viewport = null;\n    }\n    /**\n     * Update the item size and buffer size.\n     * @param itemSize The size of the items in the virtually scrolling list.\n     * @param minBufferPx The minimum amount of buffer (in pixels) before needing to render more\n     * @param maxBufferPx The amount of buffer (in pixels) to render when rendering more.\n     */\n    updateItemAndBufferSize(itemSize, minBufferPx, maxBufferPx) {\n        if (maxBufferPx < minBufferPx && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n            throw Error('CDK virtual scroll: maxBufferPx must be greater than or equal to minBufferPx');\n        }\n        this._itemSize = itemSize;\n        this._minBufferPx = minBufferPx;\n        this._maxBufferPx = maxBufferPx;\n        this._updateTotalContentSize();\n        this._updateRenderedRange();\n    }\n    /** @docs-private Implemented as part of VirtualScrollStrategy. */\n    onContentScrolled() {\n        this._updateRenderedRange();\n    }\n    /** @docs-private Implemented as part of VirtualScrollStrategy. */\n    onDataLengthChanged() {\n        this._updateTotalContentSize();\n        this._updateRenderedRange();\n    }\n    /** @docs-private Implemented as part of VirtualScrollStrategy. */\n    onContentRendered() { }\n    /** @docs-private Implemented as part of VirtualScrollStrategy. */\n    onRenderedOffsetChanged() { }\n    /**\n     * Scroll to the offset for the given index.\n     * @param index The index of the element to scroll to.\n     * @param behavior The ScrollBehavior to use when scrolling.\n     */\n    scrollToIndex(index, behavior) {\n        if (this._viewport) {\n            this._viewport.scrollToOffset(index * this._itemSize, behavior);\n        }\n    }\n    /** Update the viewport's total content size. */\n    _updateTotalContentSize() {\n        if (!this._viewport) {\n            return;\n        }\n        this._viewport.setTotalContentSize(this._viewport.getDataLength() * this._itemSize);\n    }\n    /** Update the viewport's rendered range. */\n    _updateRenderedRange() {\n        if (!this._viewport) {\n            return;\n        }\n        const renderedRange = this._viewport.getRenderedRange();\n        const newRange = { start: renderedRange.start, end: renderedRange.end };\n        const viewportSize = this._viewport.getViewportSize();\n        const dataLength = this._viewport.getDataLength();\n        let scrollOffset = this._viewport.measureScrollOffset();\n        // Prevent NaN as result when dividing by zero.\n        let firstVisibleIndex = (this._itemSize > 0) ? scrollOffset / this._itemSize : 0;\n        // If user scrolls to the bottom of the list and data changes to a smaller list\n        if (newRange.end > dataLength) {\n            // We have to recalculate the first visible index based on new data length and viewport size.\n            const maxVisibleItems = Math.ceil(viewportSize / this._itemSize);\n            const newVisibleIndex = Math.max(0, Math.min(firstVisibleIndex, dataLength - maxVisibleItems));\n            // If first visible index changed we must update scroll offset to handle start/end buffers\n            // Current range must also be adjusted to cover the new position (bottom of new list).\n            if (firstVisibleIndex != newVisibleIndex) {\n                firstVisibleIndex = newVisibleIndex;\n                scrollOffset = newVisibleIndex * this._itemSize;\n                newRange.start = Math.floor(firstVisibleIndex);\n            }\n            newRange.end = Math.max(0, Math.min(dataLength, newRange.start + maxVisibleItems));\n        }\n        const startBuffer = scrollOffset - newRange.start * this._itemSize;\n        if (startBuffer < this._minBufferPx && newRange.start != 0) {\n            const expandStart = Math.ceil((this._maxBufferPx - startBuffer) / this._itemSize);\n            newRange.start = Math.max(0, newRange.start - expandStart);\n            newRange.end = Math.min(dataLength, Math.ceil(firstVisibleIndex + (viewportSize + this._minBufferPx) / this._itemSize));\n        }\n        else {\n            const endBuffer = newRange.end * this._itemSize - (scrollOffset + viewportSize);\n            if (endBuffer < this._minBufferPx && newRange.end != dataLength) {\n                const expandEnd = Math.ceil((this._maxBufferPx - endBuffer) / this._itemSize);\n                if (expandEnd > 0) {\n                    newRange.end = Math.min(dataLength, newRange.end + expandEnd);\n                    newRange.start = Math.max(0, Math.floor(firstVisibleIndex - this._minBufferPx / this._itemSize));\n                }\n            }\n        }\n        this._viewport.setRenderedRange(newRange);\n        this._viewport.setRenderedContentOffset(this._itemSize * newRange.start);\n        this._scrolledIndexChange.next(Math.floor(firstVisibleIndex));\n    }\n}\n/**\n * Provider factory for `FixedSizeVirtualScrollStrategy` that simply extracts the already created\n * `FixedSizeVirtualScrollStrategy` from the given directive.\n * @param fixedSizeDir The instance of `CdkFixedSizeVirtualScroll` to extract the\n *     `FixedSizeVirtualScrollStrategy` from.\n */\nfunction _fixedSizeVirtualScrollStrategyFactory(fixedSizeDir) {\n    return fixedSizeDir._scrollStrategy;\n}\n/** A virtual scroll strategy that supports fixed-size items. */\nclass CdkFixedSizeVirtualScroll {\n    constructor() {\n        this._itemSize = 20;\n        this._minBufferPx = 100;\n        this._maxBufferPx = 200;\n        /** The scroll strategy used by this directive. */\n        this._scrollStrategy = new FixedSizeVirtualScrollStrategy(this.itemSize, this.minBufferPx, this.maxBufferPx);\n    }\n    /** The size of the items in the list (in pixels). */\n    get itemSize() { return this._itemSize; }\n    set itemSize(value) { this._itemSize = coerceNumberProperty(value); }\n    /**\n     * The minimum amount of buffer rendered beyond the viewport (in pixels).\n     * If the amount of buffer dips below this number, more items will be rendered. Defaults to 100px.\n     */\n    get minBufferPx() { return this._minBufferPx; }\n    set minBufferPx(value) { this._minBufferPx = coerceNumberProperty(value); }\n    /**\n     * The number of pixels worth of buffer to render for when rendering new items. Defaults to 200px.\n     */\n    get maxBufferPx() { return this._maxBufferPx; }\n    set maxBufferPx(value) { this._maxBufferPx = coerceNumberProperty(value); }\n    ngOnChanges() {\n        this._scrollStrategy.updateItemAndBufferSize(this.itemSize, this.minBufferPx, this.maxBufferPx);\n    }\n}\nCdkFixedSizeVirtualScroll.ɵfac = function CdkFixedSizeVirtualScroll_Factory(t) { return new (t || CdkFixedSizeVirtualScroll)(); };\nCdkFixedSizeVirtualScroll.ɵdir = ɵngcc0.ɵɵdefineDirective({ type: CdkFixedSizeVirtualScroll, selectors: [[\"cdk-virtual-scroll-viewport\", \"itemSize\", \"\"]], inputs: { itemSize: \"itemSize\", minBufferPx: \"minBufferPx\", maxBufferPx: \"maxBufferPx\" }, features: [ɵngcc0.ɵɵProvidersFeature([{\n                provide: VIRTUAL_SCROLL_STRATEGY,\n                useFactory: _fixedSizeVirtualScrollStrategyFactory,\n                deps: [forwardRef(() => CdkFixedSizeVirtualScroll)]\n            }]), ɵngcc0.ɵɵNgOnChangesFeature] });\nCdkFixedSizeVirtualScroll.propDecorators = {\n    itemSize: [{ type: Input }],\n    minBufferPx: [{ type: Input }],\n    maxBufferPx: [{ type: Input }]\n};\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(CdkFixedSizeVirtualScroll, [{\n        type: Directive,\n        args: [{\n                selector: 'cdk-virtual-scroll-viewport[itemSize]',\n                providers: [{\n                        provide: VIRTUAL_SCROLL_STRATEGY,\n                        useFactory: _fixedSizeVirtualScrollStrategyFactory,\n                        deps: [forwardRef(() => CdkFixedSizeVirtualScroll)]\n                    }]\n            }]\n    }], function () { return []; }, { itemSize: [{\n            type: Input\n        }], minBufferPx: [{\n            type: Input\n        }], maxBufferPx: [{\n            type: Input\n        }] }); })();\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Time in ms to throttle the scrolling events by default. */\nconst DEFAULT_SCROLL_TIME = 20;\n/**\n * Service contained all registered Scrollable references and emits an event when any one of the\n * Scrollable references emit a scrolled event.\n */\nclass ScrollDispatcher {\n    constructor(_ngZone, _platform, document) {\n        this._ngZone = _ngZone;\n        this._platform = _platform;\n        /** Subject for notifying that a registered scrollable reference element has been scrolled. */\n        this._scrolled = new Subject();\n        /** Keeps track of the global `scroll` and `resize` subscriptions. */\n        this._globalSubscription = null;\n        /** Keeps track of the amount of subscriptions to `scrolled`. Used for cleaning up afterwards. */\n        this._scrolledCount = 0;\n        /**\n         * Map of all the scrollable references that are registered with the service and their\n         * scroll event subscriptions.\n         */\n        this.scrollContainers = new Map();\n        this._document = document;\n    }\n    /**\n     * Registers a scrollable instance with the service and listens for its scrolled events. When the\n     * scrollable is scrolled, the service emits the event to its scrolled observable.\n     * @param scrollable Scrollable instance to be registered.\n     */\n    register(scrollable) {\n        if (!this.scrollContainers.has(scrollable)) {\n            this.scrollContainers.set(scrollable, scrollable.elementScrolled()\n                .subscribe(() => this._scrolled.next(scrollable)));\n        }\n    }\n    /**\n     * Deregisters a Scrollable reference and unsubscribes from its scroll event observable.\n     * @param scrollable Scrollable instance to be deregistered.\n     */\n    deregister(scrollable) {\n        const scrollableReference = this.scrollContainers.get(scrollable);\n        if (scrollableReference) {\n            scrollableReference.unsubscribe();\n            this.scrollContainers.delete(scrollable);\n        }\n    }\n    /**\n     * Returns an observable that emits an event whenever any of the registered Scrollable\n     * references (or window, document, or body) fire a scrolled event. Can provide a time in ms\n     * to override the default \"throttle\" time.\n     *\n     * **Note:** in order to avoid hitting change detection for every scroll event,\n     * all of the events emitted from this stream will be run outside the Angular zone.\n     * If you need to update any data bindings as a result of a scroll event, you have\n     * to run the callback using `NgZone.run`.\n     */\n    scrolled(auditTimeInMs = DEFAULT_SCROLL_TIME) {\n        if (!this._platform.isBrowser) {\n            return of();\n        }\n        return new Observable((observer) => {\n            if (!this._globalSubscription) {\n                this._addGlobalListener();\n            }\n            // In the case of a 0ms delay, use an observable without auditTime\n            // since it does add a perceptible delay in processing overhead.\n            const subscription = auditTimeInMs > 0 ?\n                this._scrolled.pipe(auditTime(auditTimeInMs)).subscribe(observer) :\n                this._scrolled.subscribe(observer);\n            this._scrolledCount++;\n            return () => {\n                subscription.unsubscribe();\n                this._scrolledCount--;\n                if (!this._scrolledCount) {\n                    this._removeGlobalListener();\n                }\n            };\n        });\n    }\n    ngOnDestroy() {\n        this._removeGlobalListener();\n        this.scrollContainers.forEach((_, container) => this.deregister(container));\n        this._scrolled.complete();\n    }\n    /**\n     * Returns an observable that emits whenever any of the\n     * scrollable ancestors of an element are scrolled.\n     * @param elementOrElementRef Element whose ancestors to listen for.\n     * @param auditTimeInMs Time to throttle the scroll events.\n     */\n    ancestorScrolled(elementOrElementRef, auditTimeInMs) {\n        const ancestors = this.getAncestorScrollContainers(elementOrElementRef);\n        return this.scrolled(auditTimeInMs).pipe(filter(target => {\n            return !target || ancestors.indexOf(target) > -1;\n        }));\n    }\n    /** Returns all registered Scrollables that contain the provided element. */\n    getAncestorScrollContainers(elementOrElementRef) {\n        const scrollingContainers = [];\n        this.scrollContainers.forEach((_subscription, scrollable) => {\n            if (this._scrollableContainsElement(scrollable, elementOrElementRef)) {\n                scrollingContainers.push(scrollable);\n            }\n        });\n        return scrollingContainers;\n    }\n    /** Use defaultView of injected document if available or fallback to global window reference */\n    _getWindow() {\n        return this._document.defaultView || window;\n    }\n    /** Returns true if the element is contained within the provided Scrollable. */\n    _scrollableContainsElement(scrollable, elementOrElementRef) {\n        let element = coerceElement(elementOrElementRef);\n        let scrollableElement = scrollable.getElementRef().nativeElement;\n        // Traverse through the element parents until we reach null, checking if any of the elements\n        // are the scrollable's element.\n        do {\n            if (element == scrollableElement) {\n                return true;\n            }\n        } while (element = element.parentElement);\n        return false;\n    }\n    /** Sets up the global scroll listeners. */\n    _addGlobalListener() {\n        this._globalSubscription = this._ngZone.runOutsideAngular(() => {\n            const window = this._getWindow();\n            return fromEvent(window.document, 'scroll').subscribe(() => this._scrolled.next());\n        });\n    }\n    /** Cleans up the global scroll listener. */\n    _removeGlobalListener() {\n        if (this._globalSubscription) {\n            this._globalSubscription.unsubscribe();\n            this._globalSubscription = null;\n        }\n    }\n}\nScrollDispatcher.ɵfac = function ScrollDispatcher_Factory(t) { return new (t || ScrollDispatcher)(ɵngcc0.ɵɵinject(ɵngcc0.NgZone), ɵngcc0.ɵɵinject(ɵngcc1.Platform), ɵngcc0.ɵɵinject(DOCUMENT, 8)); };\nScrollDispatcher.ɵprov = i0.ɵɵdefineInjectable({ factory: function ScrollDispatcher_Factory() { return new ScrollDispatcher(i0.ɵɵinject(i0.NgZone), i0.ɵɵinject(i1.Platform), i0.ɵɵinject(i2.DOCUMENT, 8)); }, token: ScrollDispatcher, providedIn: \"root\" });\nScrollDispatcher.ctorParameters = () => [\n    { type: NgZone },\n    { type: Platform },\n    { type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [DOCUMENT,] }] }\n];\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(ScrollDispatcher, [{\n        type: Injectable,\n        args: [{ providedIn: 'root' }]\n    }], function () { return [{ type: ɵngcc0.NgZone }, { type: ɵngcc1.Platform }, { type: undefined, decorators: [{\n                type: Optional\n            }, {\n                type: Inject,\n                args: [DOCUMENT]\n            }] }]; }, null); })();\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/**\n * Sends an event when the directive's element is scrolled. Registers itself with the\n * ScrollDispatcher service to include itself as part of its collection of scrolling events that it\n * can be listened to through the service.\n */\nclass CdkScrollable {\n    constructor(elementRef, scrollDispatcher, ngZone, dir) {\n        this.elementRef = elementRef;\n        this.scrollDispatcher = scrollDispatcher;\n        this.ngZone = ngZone;\n        this.dir = dir;\n        this._destroyed = new Subject();\n        this._elementScrolled = new Observable((observer) => this.ngZone.runOutsideAngular(() => fromEvent(this.elementRef.nativeElement, 'scroll').pipe(takeUntil(this._destroyed))\n            .subscribe(observer)));\n    }\n    ngOnInit() {\n        this.scrollDispatcher.register(this);\n    }\n    ngOnDestroy() {\n        this.scrollDispatcher.deregister(this);\n        this._destroyed.next();\n        this._destroyed.complete();\n    }\n    /** Returns observable that emits when a scroll event is fired on the host element. */\n    elementScrolled() {\n        return this._elementScrolled;\n    }\n    /** Gets the ElementRef for the viewport. */\n    getElementRef() {\n        return this.elementRef;\n    }\n    /**\n     * Scrolls to the specified offsets. This is a normalized version of the browser's native scrollTo\n     * method, since browsers are not consistent about what scrollLeft means in RTL. For this method\n     * left and right always refer to the left and right side of the scrolling container irrespective\n     * of the layout direction. start and end refer to left and right in an LTR context and vice-versa\n     * in an RTL context.\n     * @param options specified the offsets to scroll to.\n     */\n    scrollTo(options) {\n        const el = this.elementRef.nativeElement;\n        const isRtl = this.dir && this.dir.value == 'rtl';\n        // Rewrite start & end offsets as right or left offsets.\n        if (options.left == null) {\n            options.left = isRtl ? options.end : options.start;\n        }\n        if (options.right == null) {\n            options.right = isRtl ? options.start : options.end;\n        }\n        // Rewrite the bottom offset as a top offset.\n        if (options.bottom != null) {\n            options.top =\n                el.scrollHeight - el.clientHeight - options.bottom;\n        }\n        // Rewrite the right offset as a left offset.\n        if (isRtl && getRtlScrollAxisType() != 0 /* NORMAL */) {\n            if (options.left != null) {\n                options.right =\n                    el.scrollWidth - el.clientWidth - options.left;\n            }\n            if (getRtlScrollAxisType() == 2 /* INVERTED */) {\n                options.left = options.right;\n            }\n            else if (getRtlScrollAxisType() == 1 /* NEGATED */) {\n                options.left = options.right ? -options.right : options.right;\n            }\n        }\n        else {\n            if (options.right != null) {\n                options.left =\n                    el.scrollWidth - el.clientWidth - options.right;\n            }\n        }\n        this._applyScrollToOptions(options);\n    }\n    _applyScrollToOptions(options) {\n        const el = this.elementRef.nativeElement;\n        if (supportsScrollBehavior()) {\n            el.scrollTo(options);\n        }\n        else {\n            if (options.top != null) {\n                el.scrollTop = options.top;\n            }\n            if (options.left != null) {\n                el.scrollLeft = options.left;\n            }\n        }\n    }\n    /**\n     * Measures the scroll offset relative to the specified edge of the viewport. This method can be\n     * used instead of directly checking scrollLeft or scrollTop, since browsers are not consistent\n     * about what scrollLeft means in RTL. The values returned by this method are normalized such that\n     * left and right always refer to the left and right side of the scrolling container irrespective\n     * of the layout direction. start and end refer to left and right in an LTR context and vice-versa\n     * in an RTL context.\n     * @param from The edge to measure from.\n     */\n    measureScrollOffset(from) {\n        const LEFT = 'left';\n        const RIGHT = 'right';\n        const el = this.elementRef.nativeElement;\n        if (from == 'top') {\n            return el.scrollTop;\n        }\n        if (from == 'bottom') {\n            return el.scrollHeight - el.clientHeight - el.scrollTop;\n        }\n        // Rewrite start & end as left or right offsets.\n        const isRtl = this.dir && this.dir.value == 'rtl';\n        if (from == 'start') {\n            from = isRtl ? RIGHT : LEFT;\n        }\n        else if (from == 'end') {\n            from = isRtl ? LEFT : RIGHT;\n        }\n        if (isRtl && getRtlScrollAxisType() == 2 /* INVERTED */) {\n            // For INVERTED, scrollLeft is (scrollWidth - clientWidth) when scrolled all the way left and\n            // 0 when scrolled all the way right.\n            if (from == LEFT) {\n                return el.scrollWidth - el.clientWidth - el.scrollLeft;\n            }\n            else {\n                return el.scrollLeft;\n            }\n        }\n        else if (isRtl && getRtlScrollAxisType() == 1 /* NEGATED */) {\n            // For NEGATED, scrollLeft is -(scrollWidth - clientWidth) when scrolled all the way left and\n            // 0 when scrolled all the way right.\n            if (from == LEFT) {\n                return el.scrollLeft + el.scrollWidth - el.clientWidth;\n            }\n            else {\n                return -el.scrollLeft;\n            }\n        }\n        else {\n            // For NORMAL, as well as non-RTL contexts, scrollLeft is 0 when scrolled all the way left and\n            // (scrollWidth - clientWidth) when scrolled all the way right.\n            if (from == LEFT) {\n                return el.scrollLeft;\n            }\n            else {\n                return el.scrollWidth - el.clientWidth - el.scrollLeft;\n            }\n        }\n    }\n}\nCdkScrollable.ɵfac = function CdkScrollable_Factory(t) { return new (t || CdkScrollable)(ɵngcc0.ɵɵdirectiveInject(ɵngcc0.ElementRef), ɵngcc0.ɵɵdirectiveInject(ScrollDispatcher), ɵngcc0.ɵɵdirectiveInject(ɵngcc0.NgZone), ɵngcc0.ɵɵdirectiveInject(ɵngcc2.Directionality, 8)); };\nCdkScrollable.ɵdir = ɵngcc0.ɵɵdefineDirective({ type: CdkScrollable, selectors: [[\"\", \"cdk-scrollable\", \"\"], [\"\", \"cdkScrollable\", \"\"]] });\nCdkScrollable.ctorParameters = () => [\n    { type: ElementRef },\n    { type: ScrollDispatcher },\n    { type: NgZone },\n    { type: Directionality, decorators: [{ type: Optional }] }\n];\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(CdkScrollable, [{\n        type: Directive,\n        args: [{\n                selector: '[cdk-scrollable], [cdkScrollable]'\n            }]\n    }], function () { return [{ type: ɵngcc0.ElementRef }, { type: ScrollDispatcher }, { type: ɵngcc0.NgZone }, { type: ɵngcc2.Directionality, decorators: [{\n                type: Optional\n            }] }]; }, null); })();\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Time in ms to throttle the resize events by default. */\nconst DEFAULT_RESIZE_TIME = 20;\n/**\n * Simple utility for getting the bounds of the browser viewport.\n * @docs-private\n */\nclass ViewportRuler {\n    constructor(_platform, ngZone, document) {\n        this._platform = _platform;\n        /** Stream of viewport change events. */\n        this._change = new Subject();\n        /** Event listener that will be used to handle the viewport change events. */\n        this._changeListener = (event) => {\n            this._change.next(event);\n        };\n        this._document = document;\n        ngZone.runOutsideAngular(() => {\n            if (_platform.isBrowser) {\n                const window = this._getWindow();\n                // Note that bind the events ourselves, rather than going through something like RxJS's\n                // `fromEvent` so that we can ensure that they're bound outside of the NgZone.\n                window.addEventListener('resize', this._changeListener);\n                window.addEventListener('orientationchange', this._changeListener);\n            }\n            // Clear the cached position so that the viewport is re-measured next time it is required.\n            // We don't need to keep track of the subscription, because it is completed on destroy.\n            this.change().subscribe(() => this._viewportSize = null);\n        });\n    }\n    ngOnDestroy() {\n        if (this._platform.isBrowser) {\n            const window = this._getWindow();\n            window.removeEventListener('resize', this._changeListener);\n            window.removeEventListener('orientationchange', this._changeListener);\n        }\n        this._change.complete();\n    }\n    /** Returns the viewport's width and height. */\n    getViewportSize() {\n        if (!this._viewportSize) {\n            this._updateViewportSize();\n        }\n        const output = { width: this._viewportSize.width, height: this._viewportSize.height };\n        // If we're not on a browser, don't cache the size since it'll be mocked out anyway.\n        if (!this._platform.isBrowser) {\n            this._viewportSize = null;\n        }\n        return output;\n    }\n    /** Gets a ClientRect for the viewport's bounds. */\n    getViewportRect() {\n        // Use the document element's bounding rect rather than the window scroll properties\n        // (e.g. pageYOffset, scrollY) due to in issue in Chrome and IE where window scroll\n        // properties and client coordinates (boundingClientRect, clientX/Y, etc.) are in different\n        // conceptual viewports. Under most circumstances these viewports are equivalent, but they\n        // can disagree when the page is pinch-zoomed (on devices that support touch).\n        // See https://bugs.chromium.org/p/chromium/issues/detail?id=489206#c4\n        // We use the documentElement instead of the body because, by default (without a css reset)\n        // browsers typically give the document body an 8px margin, which is not included in\n        // getBoundingClientRect().\n        const scrollPosition = this.getViewportScrollPosition();\n        const { width, height } = this.getViewportSize();\n        return {\n            top: scrollPosition.top,\n            left: scrollPosition.left,\n            bottom: scrollPosition.top + height,\n            right: scrollPosition.left + width,\n            height,\n            width,\n        };\n    }\n    /** Gets the (top, left) scroll position of the viewport. */\n    getViewportScrollPosition() {\n        // While we can get a reference to the fake document\n        // during SSR, it doesn't have getBoundingClientRect.\n        if (!this._platform.isBrowser) {\n            return { top: 0, left: 0 };\n        }\n        // The top-left-corner of the viewport is determined by the scroll position of the document\n        // body, normally just (scrollLeft, scrollTop). However, Chrome and Firefox disagree about\n        // whether `document.body` or `document.documentElement` is the scrolled element, so reading\n        // `scrollTop` and `scrollLeft` is inconsistent. However, using the bounding rect of\n        // `document.documentElement` works consistently, where the `top` and `left` values will\n        // equal negative the scroll position.\n        const document = this._document;\n        const window = this._getWindow();\n        const documentElement = document.documentElement;\n        const documentRect = documentElement.getBoundingClientRect();\n        const top = -documentRect.top || document.body.scrollTop || window.scrollY ||\n            documentElement.scrollTop || 0;\n        const left = -documentRect.left || document.body.scrollLeft || window.scrollX ||\n            documentElement.scrollLeft || 0;\n        return { top, left };\n    }\n    /**\n     * Returns a stream that emits whenever the size of the viewport changes.\n     * This stream emits outside of the Angular zone.\n     * @param throttleTime Time in milliseconds to throttle the stream.\n     */\n    change(throttleTime = DEFAULT_RESIZE_TIME) {\n        return throttleTime > 0 ? this._change.pipe(auditTime(throttleTime)) : this._change;\n    }\n    /** Use defaultView of injected document if available or fallback to global window reference */\n    _getWindow() {\n        return this._document.defaultView || window;\n    }\n    /** Updates the cached viewport size. */\n    _updateViewportSize() {\n        const window = this._getWindow();\n        this._viewportSize = this._platform.isBrowser ?\n            { width: window.innerWidth, height: window.innerHeight } :\n            { width: 0, height: 0 };\n    }\n}\nViewportRuler.ɵfac = function ViewportRuler_Factory(t) { return new (t || ViewportRuler)(ɵngcc0.ɵɵinject(ɵngcc1.Platform), ɵngcc0.ɵɵinject(ɵngcc0.NgZone), ɵngcc0.ɵɵinject(DOCUMENT, 8)); };\nViewportRuler.ɵprov = i0.ɵɵdefineInjectable({ factory: function ViewportRuler_Factory() { return new ViewportRuler(i0.ɵɵinject(i1.Platform), i0.ɵɵinject(i0.NgZone), i0.ɵɵinject(i2.DOCUMENT, 8)); }, token: ViewportRuler, providedIn: \"root\" });\nViewportRuler.ctorParameters = () => [\n    { type: Platform },\n    { type: NgZone },\n    { type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [DOCUMENT,] }] }\n];\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(ViewportRuler, [{\n        type: Injectable,\n        args: [{ providedIn: 'root' }]\n    }], function () { return [{ type: ɵngcc1.Platform }, { type: ɵngcc0.NgZone }, { type: undefined, decorators: [{\n                type: Optional\n            }, {\n                type: Inject,\n                args: [DOCUMENT]\n            }] }]; }, null); })();\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Checks if the given ranges are equal. */\nfunction rangesEqual(r1, r2) {\n    return r1.start == r2.start && r1.end == r2.end;\n}\n/**\n * Scheduler to be used for scroll events. Needs to fall back to\n * something that doesn't rely on requestAnimationFrame on environments\n * that don't support it (e.g. server-side rendering).\n */\nconst SCROLL_SCHEDULER = typeof requestAnimationFrame !== 'undefined' ? animationFrameScheduler : asapScheduler;\n/** A viewport that virtualizes its scrolling with the help of `CdkVirtualForOf`. */\nclass CdkVirtualScrollViewport extends CdkScrollable {\n    constructor(elementRef, _changeDetectorRef, ngZone, _scrollStrategy, dir, scrollDispatcher, viewportRuler) {\n        super(elementRef, scrollDispatcher, ngZone, dir);\n        this.elementRef = elementRef;\n        this._changeDetectorRef = _changeDetectorRef;\n        this._scrollStrategy = _scrollStrategy;\n        /** Emits when the viewport is detached from a CdkVirtualForOf. */\n        this._detachedSubject = new Subject();\n        /** Emits when the rendered range changes. */\n        this._renderedRangeSubject = new Subject();\n        this._orientation = 'vertical';\n        // Note: we don't use the typical EventEmitter here because we need to subscribe to the scroll\n        // strategy lazily (i.e. only if the user is actually listening to the events). We do this because\n        // depending on how the strategy calculates the scrolled index, it may come at a cost to\n        // performance.\n        /** Emits when the index of the first element visible in the viewport changes. */\n        this.scrolledIndexChange = new Observable((observer) => this._scrollStrategy.scrolledIndexChange.subscribe(index => Promise.resolve().then(() => this.ngZone.run(() => observer.next(index)))));\n        /** A stream that emits whenever the rendered range changes. */\n        this.renderedRangeStream = this._renderedRangeSubject;\n        /**\n         * The total size of all content (in pixels), including content that is not currently rendered.\n         */\n        this._totalContentSize = 0;\n        /** A string representing the `style.width` property value to be used for the spacer element. */\n        this._totalContentWidth = '';\n        /** A string representing the `style.height` property value to be used for the spacer element. */\n        this._totalContentHeight = '';\n        /** The currently rendered range of indices. */\n        this._renderedRange = { start: 0, end: 0 };\n        /** The length of the data bound to this viewport (in number of items). */\n        this._dataLength = 0;\n        /** The size of the viewport (in pixels). */\n        this._viewportSize = 0;\n        /** The last rendered content offset that was set. */\n        this._renderedContentOffset = 0;\n        /**\n         * Whether the last rendered content offset was to the end of the content (and therefore needs to\n         * be rewritten as an offset to the start of the content).\n         */\n        this._renderedContentOffsetNeedsRewrite = false;\n        /** Whether there is a pending change detection cycle. */\n        this._isChangeDetectionPending = false;\n        /** A list of functions to run after the next change detection cycle. */\n        this._runAfterChangeDetection = [];\n        /** Subscription to changes in the viewport size. */\n        this._viewportChanges = Subscription.EMPTY;\n        if (!_scrollStrategy && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n            throw Error('Error: cdk-virtual-scroll-viewport requires the \"itemSize\" property to be set.');\n        }\n        this._viewportChanges = viewportRuler.change().subscribe(() => {\n            this.checkViewportSize();\n        });\n    }\n    /** The direction the viewport scrolls. */\n    get orientation() {\n        return this._orientation;\n    }\n    set orientation(orientation) {\n        if (this._orientation !== orientation) {\n            this._orientation = orientation;\n            this._calculateSpacerSize();\n        }\n    }\n    ngOnInit() {\n        super.ngOnInit();\n        // It's still too early to measure the viewport at this point. Deferring with a promise allows\n        // the Viewport to be rendered with the correct size before we measure. We run this outside the\n        // zone to avoid causing more change detection cycles. We handle the change detection loop\n        // ourselves instead.\n        this.ngZone.runOutsideAngular(() => Promise.resolve().then(() => {\n            this._measureViewportSize();\n            this._scrollStrategy.attach(this);\n            this.elementScrolled()\n                .pipe(\n            // Start off with a fake scroll event so we properly detect our initial position.\n            startWith(null), \n            // Collect multiple events into one until the next animation frame. This way if\n            // there are multiple scroll events in the same frame we only need to recheck\n            // our layout once.\n            auditTime(0, SCROLL_SCHEDULER))\n                .subscribe(() => this._scrollStrategy.onContentScrolled());\n            this._markChangeDetectionNeeded();\n        }));\n    }\n    ngOnDestroy() {\n        this.detach();\n        this._scrollStrategy.detach();\n        // Complete all subjects\n        this._renderedRangeSubject.complete();\n        this._detachedSubject.complete();\n        this._viewportChanges.unsubscribe();\n        super.ngOnDestroy();\n    }\n    /** Attaches a `CdkVirtualScrollRepeater` to this viewport. */\n    attach(forOf) {\n        if (this._forOf && (typeof ngDevMode === 'undefined' || ngDevMode)) {\n            throw Error('CdkVirtualScrollViewport is already attached.');\n        }\n        // Subscribe to the data stream of the CdkVirtualForOf to keep track of when the data length\n        // changes. Run outside the zone to avoid triggering change detection, since we're managing the\n        // change detection loop ourselves.\n        this.ngZone.runOutsideAngular(() => {\n            this._forOf = forOf;\n            this._forOf.dataStream.pipe(takeUntil(this._detachedSubject)).subscribe(data => {\n                const newLength = data.length;\n                if (newLength !== this._dataLength) {\n                    this._dataLength = newLength;\n                    this._scrollStrategy.onDataLengthChanged();\n                }\n                this._doChangeDetection();\n            });\n        });\n    }\n    /** Detaches the current `CdkVirtualForOf`. */\n    detach() {\n        this._forOf = null;\n        this._detachedSubject.next();\n    }\n    /** Gets the length of the data bound to this viewport (in number of items). */\n    getDataLength() {\n        return this._dataLength;\n    }\n    /** Gets the size of the viewport (in pixels). */\n    getViewportSize() {\n        return this._viewportSize;\n    }\n    // TODO(mmalerba): This is technically out of sync with what's really rendered until a render\n    // cycle happens. I'm being careful to only call it after the render cycle is complete and before\n    // setting it to something else, but its error prone and should probably be split into\n    // `pendingRange` and `renderedRange`, the latter reflecting whats actually in the DOM.\n    /** Get the current rendered range of items. */\n    getRenderedRange() {\n        return this._renderedRange;\n    }\n    /**\n     * Sets the total size of all content (in pixels), including content that is not currently\n     * rendered.\n     */\n    setTotalContentSize(size) {\n        if (this._totalContentSize !== size) {\n            this._totalContentSize = size;\n            this._calculateSpacerSize();\n            this._markChangeDetectionNeeded();\n        }\n    }\n    /** Sets the currently rendered range of indices. */\n    setRenderedRange(range) {\n        if (!rangesEqual(this._renderedRange, range)) {\n            this._renderedRangeSubject.next(this._renderedRange = range);\n            this._markChangeDetectionNeeded(() => this._scrollStrategy.onContentRendered());\n        }\n    }\n    /**\n     * Gets the offset from the start of the viewport to the start of the rendered data (in pixels).\n     */\n    getOffsetToRenderedContentStart() {\n        return this._renderedContentOffsetNeedsRewrite ? null : this._renderedContentOffset;\n    }\n    /**\n     * Sets the offset from the start of the viewport to either the start or end of the rendered data\n     * (in pixels).\n     */\n    setRenderedContentOffset(offset, to = 'to-start') {\n        // For a horizontal viewport in a right-to-left language we need to translate along the x-axis\n        // in the negative direction.\n        const isRtl = this.dir && this.dir.value == 'rtl';\n        const isHorizontal = this.orientation == 'horizontal';\n        const axis = isHorizontal ? 'X' : 'Y';\n        const axisDirection = isHorizontal && isRtl ? -1 : 1;\n        let transform = `translate${axis}(${Number(axisDirection * offset)}px)`;\n        this._renderedContentOffset = offset;\n        if (to === 'to-end') {\n            transform += ` translate${axis}(-100%)`;\n            // The viewport should rewrite this as a `to-start` offset on the next render cycle. Otherwise\n            // elements will appear to expand in the wrong direction (e.g. `mat-expansion-panel` would\n            // expand upward).\n            this._renderedContentOffsetNeedsRewrite = true;\n        }\n        if (this._renderedContentTransform != transform) {\n            // We know this value is safe because we parse `offset` with `Number()` before passing it\n            // into the string.\n            this._renderedContentTransform = transform;\n            this._markChangeDetectionNeeded(() => {\n                if (this._renderedContentOffsetNeedsRewrite) {\n                    this._renderedContentOffset -= this.measureRenderedContentSize();\n                    this._renderedContentOffsetNeedsRewrite = false;\n                    this.setRenderedContentOffset(this._renderedContentOffset);\n                }\n                else {\n                    this._scrollStrategy.onRenderedOffsetChanged();\n                }\n            });\n        }\n    }\n    /**\n     * Scrolls to the given offset from the start of the viewport. Please note that this is not always\n     * the same as setting `scrollTop` or `scrollLeft`. In a horizontal viewport with right-to-left\n     * direction, this would be the equivalent of setting a fictional `scrollRight` property.\n     * @param offset The offset to scroll to.\n     * @param behavior The ScrollBehavior to use when scrolling. Default is behavior is `auto`.\n     */\n    scrollToOffset(offset, behavior = 'auto') {\n        const options = { behavior };\n        if (this.orientation === 'horizontal') {\n            options.start = offset;\n        }\n        else {\n            options.top = offset;\n        }\n        this.scrollTo(options);\n    }\n    /**\n     * Scrolls to the offset for the given index.\n     * @param index The index of the element to scroll to.\n     * @param behavior The ScrollBehavior to use when scrolling. Default is behavior is `auto`.\n     */\n    scrollToIndex(index, behavior = 'auto') {\n        this._scrollStrategy.scrollToIndex(index, behavior);\n    }\n    /**\n     * Gets the current scroll offset from the start of the viewport (in pixels).\n     * @param from The edge to measure the offset from. Defaults to 'top' in vertical mode and 'start'\n     *     in horizontal mode.\n     */\n    measureScrollOffset(from) {\n        return from ?\n            super.measureScrollOffset(from) :\n            super.measureScrollOffset(this.orientation === 'horizontal' ? 'start' : 'top');\n    }\n    /** Measure the combined size of all of the rendered items. */\n    measureRenderedContentSize() {\n        const contentEl = this._contentWrapper.nativeElement;\n        return this.orientation === 'horizontal' ? contentEl.offsetWidth : contentEl.offsetHeight;\n    }\n    /**\n     * Measure the total combined size of the given range. Throws if the range includes items that are\n     * not rendered.\n     */\n    measureRangeSize(range) {\n        if (!this._forOf) {\n            return 0;\n        }\n        return this._forOf.measureRangeSize(range, this.orientation);\n    }\n    /** Update the viewport dimensions and re-render. */\n    checkViewportSize() {\n        // TODO: Cleanup later when add logic for handling content resize\n        this._measureViewportSize();\n        this._scrollStrategy.onDataLengthChanged();\n    }\n    /** Measure the viewport size. */\n    _measureViewportSize() {\n        const viewportEl = this.elementRef.nativeElement;\n        this._viewportSize = this.orientation === 'horizontal' ?\n            viewportEl.clientWidth : viewportEl.clientHeight;\n    }\n    /** Queue up change detection to run. */\n    _markChangeDetectionNeeded(runAfter) {\n        if (runAfter) {\n            this._runAfterChangeDetection.push(runAfter);\n        }\n        // Use a Promise to batch together calls to `_doChangeDetection`. This way if we set a bunch of\n        // properties sequentially we only have to run `_doChangeDetection` once at the end.\n        if (!this._isChangeDetectionPending) {\n            this._isChangeDetectionPending = true;\n            this.ngZone.runOutsideAngular(() => Promise.resolve().then(() => {\n                this._doChangeDetection();\n            }));\n        }\n    }\n    /** Run change detection. */\n    _doChangeDetection() {\n        this._isChangeDetectionPending = false;\n        // Apply the content transform. The transform can't be set via an Angular binding because\n        // bypassSecurityTrustStyle is banned in Google. However the value is safe, it's composed of\n        // string literals, a variable that can only be 'X' or 'Y', and user input that is run through\n        // the `Number` function first to coerce it to a numeric value.\n        this._contentWrapper.nativeElement.style.transform = this._renderedContentTransform;\n        // Apply changes to Angular bindings. Note: We must call `markForCheck` to run change detection\n        // from the root, since the repeated items are content projected in. Calling `detectChanges`\n        // instead does not properly check the projected content.\n        this.ngZone.run(() => this._changeDetectorRef.markForCheck());\n        const runAfterChangeDetection = this._runAfterChangeDetection;\n        this._runAfterChangeDetection = [];\n        for (const fn of runAfterChangeDetection) {\n            fn();\n        }\n    }\n    /** Calculates the `style.width` and `style.height` for the spacer element. */\n    _calculateSpacerSize() {\n        this._totalContentHeight =\n            this.orientation === 'horizontal' ? '' : `${this._totalContentSize}px`;\n        this._totalContentWidth =\n            this.orientation === 'horizontal' ? `${this._totalContentSize}px` : '';\n    }\n}\nCdkVirtualScrollViewport.ɵfac = function CdkVirtualScrollViewport_Factory(t) { return new (t || CdkVirtualScrollViewport)(ɵngcc0.ɵɵdirectiveInject(ɵngcc0.ElementRef), ɵngcc0.ɵɵdirectiveInject(ɵngcc0.ChangeDetectorRef), ɵngcc0.ɵɵdirectiveInject(ɵngcc0.NgZone), ɵngcc0.ɵɵdirectiveInject(VIRTUAL_SCROLL_STRATEGY, 8), ɵngcc0.ɵɵdirectiveInject(ɵngcc2.Directionality, 8), ɵngcc0.ɵɵdirectiveInject(ScrollDispatcher), ɵngcc0.ɵɵdirectiveInject(ViewportRuler)); };\nCdkVirtualScrollViewport.ɵcmp = ɵngcc0.ɵɵdefineComponent({ type: CdkVirtualScrollViewport, selectors: [[\"cdk-virtual-scroll-viewport\"]], viewQuery: function CdkVirtualScrollViewport_Query(rf, ctx) { if (rf & 1) {\n        ɵngcc0.ɵɵstaticViewQuery(_c0, true);\n    } if (rf & 2) {\n        var _t;\n        ɵngcc0.ɵɵqueryRefresh(_t = ɵngcc0.ɵɵloadQuery()) && (ctx._contentWrapper = _t.first);\n    } }, hostAttrs: [1, \"cdk-virtual-scroll-viewport\"], hostVars: 4, hostBindings: function CdkVirtualScrollViewport_HostBindings(rf, ctx) { if (rf & 2) {\n        ɵngcc0.ɵɵclassProp(\"cdk-virtual-scroll-orientation-horizontal\", ctx.orientation === \"horizontal\")(\"cdk-virtual-scroll-orientation-vertical\", ctx.orientation !== \"horizontal\");\n    } }, inputs: { orientation: \"orientation\" }, outputs: { scrolledIndexChange: \"scrolledIndexChange\" }, features: [ɵngcc0.ɵɵProvidersFeature([{\n                provide: CdkScrollable,\n                useExisting: CdkVirtualScrollViewport\n            }]), ɵngcc0.ɵɵInheritDefinitionFeature], ngContentSelectors: _c1, decls: 4, vars: 4, consts: [[1, \"cdk-virtual-scroll-content-wrapper\"], [\"contentWrapper\", \"\"], [1, \"cdk-virtual-scroll-spacer\"]], template: function CdkVirtualScrollViewport_Template(rf, ctx) { if (rf & 1) {\n        ɵngcc0.ɵɵprojectionDef();\n        ɵngcc0.ɵɵelementStart(0, \"div\", 0, 1);\n        ɵngcc0.ɵɵprojection(2);\n        ɵngcc0.ɵɵelementEnd();\n        ɵngcc0.ɵɵelement(3, \"div\", 2);\n    } if (rf & 2) {\n        ɵngcc0.ɵɵadvance(3);\n        ɵngcc0.ɵɵstyleProp(\"width\", ctx._totalContentWidth)(\"height\", ctx._totalContentHeight);\n    } }, styles: [\"cdk-virtual-scroll-viewport{display:block;position:relative;overflow:auto;contain:strict;transform:translateZ(0);will-change:scroll-position;-webkit-overflow-scrolling:touch}.cdk-virtual-scroll-content-wrapper{position:absolute;top:0;left:0;contain:content}[dir=rtl] .cdk-virtual-scroll-content-wrapper{right:0;left:auto}.cdk-virtual-scroll-orientation-horizontal .cdk-virtual-scroll-content-wrapper{min-height:100%}.cdk-virtual-scroll-orientation-horizontal .cdk-virtual-scroll-content-wrapper>dl:not([cdkVirtualFor]),.cdk-virtual-scroll-orientation-horizontal .cdk-virtual-scroll-content-wrapper>ol:not([cdkVirtualFor]),.cdk-virtual-scroll-orientation-horizontal .cdk-virtual-scroll-content-wrapper>table:not([cdkVirtualFor]),.cdk-virtual-scroll-orientation-horizontal .cdk-virtual-scroll-content-wrapper>ul:not([cdkVirtualFor]){padding-left:0;padding-right:0;margin-left:0;margin-right:0;border-left-width:0;border-right-width:0;outline:none}.cdk-virtual-scroll-orientation-vertical .cdk-virtual-scroll-content-wrapper{min-width:100%}.cdk-virtual-scroll-orientation-vertical .cdk-virtual-scroll-content-wrapper>dl:not([cdkVirtualFor]),.cdk-virtual-scroll-orientation-vertical .cdk-virtual-scroll-content-wrapper>ol:not([cdkVirtualFor]),.cdk-virtual-scroll-orientation-vertical .cdk-virtual-scroll-content-wrapper>table:not([cdkVirtualFor]),.cdk-virtual-scroll-orientation-vertical .cdk-virtual-scroll-content-wrapper>ul:not([cdkVirtualFor]){padding-top:0;padding-bottom:0;margin-top:0;margin-bottom:0;border-top-width:0;border-bottom-width:0;outline:none}.cdk-virtual-scroll-spacer{position:absolute;top:0;left:0;height:1px;width:1px;transform-origin:0 0}[dir=rtl] .cdk-virtual-scroll-spacer{right:0;left:auto;transform-origin:100% 0}\\n\"], encapsulation: 2, changeDetection: 0 });\nCdkVirtualScrollViewport.ctorParameters = () => [\n    { type: ElementRef },\n    { type: ChangeDetectorRef },\n    { type: NgZone },\n    { type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [VIRTUAL_SCROLL_STRATEGY,] }] },\n    { type: Directionality, decorators: [{ type: Optional }] },\n    { type: ScrollDispatcher },\n    { type: ViewportRuler }\n];\nCdkVirtualScrollViewport.propDecorators = {\n    orientation: [{ type: Input }],\n    scrolledIndexChange: [{ type: Output }],\n    _contentWrapper: [{ type: ViewChild, args: ['contentWrapper', { static: true },] }]\n};\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(CdkVirtualScrollViewport, [{\n        type: Component,\n        args: [{\n                selector: 'cdk-virtual-scroll-viewport',\n                template: \"<!--\\n  Wrap the rendered content in an element that will be used to offset it based on the scroll\\n  position.\\n-->\\n<div #contentWrapper class=\\\"cdk-virtual-scroll-content-wrapper\\\">\\n  <ng-content></ng-content>\\n</div>\\n<!--\\n  Spacer used to force the scrolling container to the correct size for the *total* number of items\\n  so that the scrollbar captures the size of the entire data set.\\n-->\\n<div class=\\\"cdk-virtual-scroll-spacer\\\"\\n     [style.width]=\\\"_totalContentWidth\\\" [style.height]=\\\"_totalContentHeight\\\"></div>\\n\",\n                host: {\n                    'class': 'cdk-virtual-scroll-viewport',\n                    '[class.cdk-virtual-scroll-orientation-horizontal]': 'orientation === \"horizontal\"',\n                    '[class.cdk-virtual-scroll-orientation-vertical]': 'orientation !== \"horizontal\"'\n                },\n                encapsulation: ViewEncapsulation.None,\n                changeDetection: ChangeDetectionStrategy.OnPush,\n                providers: [{\n                        provide: CdkScrollable,\n                        useExisting: CdkVirtualScrollViewport\n                    }],\n                styles: [\"cdk-virtual-scroll-viewport{display:block;position:relative;overflow:auto;contain:strict;transform:translateZ(0);will-change:scroll-position;-webkit-overflow-scrolling:touch}.cdk-virtual-scroll-content-wrapper{position:absolute;top:0;left:0;contain:content}[dir=rtl] .cdk-virtual-scroll-content-wrapper{right:0;left:auto}.cdk-virtual-scroll-orientation-horizontal .cdk-virtual-scroll-content-wrapper{min-height:100%}.cdk-virtual-scroll-orientation-horizontal .cdk-virtual-scroll-content-wrapper>dl:not([cdkVirtualFor]),.cdk-virtual-scroll-orientation-horizontal .cdk-virtual-scroll-content-wrapper>ol:not([cdkVirtualFor]),.cdk-virtual-scroll-orientation-horizontal .cdk-virtual-scroll-content-wrapper>table:not([cdkVirtualFor]),.cdk-virtual-scroll-orientation-horizontal .cdk-virtual-scroll-content-wrapper>ul:not([cdkVirtualFor]){padding-left:0;padding-right:0;margin-left:0;margin-right:0;border-left-width:0;border-right-width:0;outline:none}.cdk-virtual-scroll-orientation-vertical .cdk-virtual-scroll-content-wrapper{min-width:100%}.cdk-virtual-scroll-orientation-vertical .cdk-virtual-scroll-content-wrapper>dl:not([cdkVirtualFor]),.cdk-virtual-scroll-orientation-vertical .cdk-virtual-scroll-content-wrapper>ol:not([cdkVirtualFor]),.cdk-virtual-scroll-orientation-vertical .cdk-virtual-scroll-content-wrapper>table:not([cdkVirtualFor]),.cdk-virtual-scroll-orientation-vertical .cdk-virtual-scroll-content-wrapper>ul:not([cdkVirtualFor]){padding-top:0;padding-bottom:0;margin-top:0;margin-bottom:0;border-top-width:0;border-bottom-width:0;outline:none}.cdk-virtual-scroll-spacer{position:absolute;top:0;left:0;height:1px;width:1px;transform-origin:0 0}[dir=rtl] .cdk-virtual-scroll-spacer{right:0;left:auto;transform-origin:100% 0}\\n\"]\n            }]\n    }], function () { return [{ type: ɵngcc0.ElementRef }, { type: ɵngcc0.ChangeDetectorRef }, { type: ɵngcc0.NgZone }, { type: undefined, decorators: [{\n                type: Optional\n            }, {\n                type: Inject,\n                args: [VIRTUAL_SCROLL_STRATEGY]\n            }] }, { type: ɵngcc2.Directionality, decorators: [{\n                type: Optional\n            }] }, { type: ScrollDispatcher }, { type: ViewportRuler }]; }, { scrolledIndexChange: [{\n            type: Output\n        }], orientation: [{\n            type: Input\n        }], _contentWrapper: [{\n            type: ViewChild,\n            args: ['contentWrapper', { static: true }]\n        }] }); })();\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n/** Helper to extract the offset of a DOM Node in a certain direction. */\nfunction getOffset(orientation, direction, node) {\n    const el = node;\n    if (!el.getBoundingClientRect) {\n        return 0;\n    }\n    const rect = el.getBoundingClientRect();\n    if (orientation === 'horizontal') {\n        return direction === 'start' ? rect.left : rect.right;\n    }\n    return direction === 'start' ? rect.top : rect.bottom;\n}\n/**\n * A directive similar to `ngForOf` to be used for rendering data inside a virtual scrolling\n * container.\n */\nclass CdkVirtualForOf {\n    constructor(\n    /** The view container to add items to. */\n    _viewContainerRef, \n    /** The template to use when stamping out new items. */\n    _template, \n    /** The set of available differs. */\n    _differs, \n    /** The strategy used to render items in the virtual scroll viewport. */\n    _viewRepeater, \n    /** The virtual scrolling viewport that these items are being rendered in. */\n    _viewport, ngZone) {\n        this._viewContainerRef = _viewContainerRef;\n        this._template = _template;\n        this._differs = _differs;\n        this._viewRepeater = _viewRepeater;\n        this._viewport = _viewport;\n        /** Emits when the rendered view of the data changes. */\n        this.viewChange = new Subject();\n        /** Subject that emits when a new DataSource instance is given. */\n        this._dataSourceChanges = new Subject();\n        /** Emits whenever the data in the current DataSource changes. */\n        this.dataStream = this._dataSourceChanges\n            .pipe(\n        // Start off with null `DataSource`.\n        startWith(null), \n        // Bundle up the previous and current data sources so we can work with both.\n        pairwise(), \n        // Use `_changeDataSource` to disconnect from the previous data source and connect to the\n        // new one, passing back a stream of data changes which we run through `switchMap` to give\n        // us a data stream that emits the latest data from whatever the current `DataSource` is.\n        switchMap(([prev, cur]) => this._changeDataSource(prev, cur)), \n        // Replay the last emitted data when someone subscribes.\n        shareReplay(1));\n        /** The differ used to calculate changes to the data. */\n        this._differ = null;\n        /** Whether the rendered data should be updated during the next ngDoCheck cycle. */\n        this._needsUpdate = false;\n        this._destroyed = new Subject();\n        this.dataStream.subscribe(data => {\n            this._data = data;\n            this._onRenderedDataChange();\n        });\n        this._viewport.renderedRangeStream.pipe(takeUntil(this._destroyed)).subscribe(range => {\n            this._renderedRange = range;\n            ngZone.run(() => this.viewChange.next(this._renderedRange));\n            this._onRenderedDataChange();\n        });\n        this._viewport.attach(this);\n    }\n    /** The DataSource to display. */\n    get cdkVirtualForOf() {\n        return this._cdkVirtualForOf;\n    }\n    set cdkVirtualForOf(value) {\n        this._cdkVirtualForOf = value;\n        if (isDataSource(value)) {\n            this._dataSourceChanges.next(value);\n        }\n        else {\n            // If value is an an NgIterable, convert it to an array.\n            this._dataSourceChanges.next(new ArrayDataSource(isObservable(value) ? value : Array.from(value || [])));\n        }\n    }\n    /**\n     * The `TrackByFunction` to use for tracking changes. The `TrackByFunction` takes the index and\n     * the item and produces a value to be used as the item's identity when tracking changes.\n     */\n    get cdkVirtualForTrackBy() {\n        return this._cdkVirtualForTrackBy;\n    }\n    set cdkVirtualForTrackBy(fn) {\n        this._needsUpdate = true;\n        this._cdkVirtualForTrackBy = fn ?\n            (index, item) => fn(index + (this._renderedRange ? this._renderedRange.start : 0), item) :\n            undefined;\n    }\n    /** The template used to stamp out new elements. */\n    set cdkVirtualForTemplate(value) {\n        if (value) {\n            this._needsUpdate = true;\n            this._template = value;\n        }\n    }\n    /**\n     * The size of the cache used to store templates that are not being used for re-use later.\n     * Setting the cache size to `0` will disable caching. Defaults to 20 templates.\n     */\n    get cdkVirtualForTemplateCacheSize() {\n        return this._viewRepeater.viewCacheSize;\n    }\n    set cdkVirtualForTemplateCacheSize(size) {\n        this._viewRepeater.viewCacheSize = coerceNumberProperty(size);\n    }\n    /**\n     * Measures the combined size (width for horizontal orientation, height for vertical) of all items\n     * in the specified range. Throws an error if the range includes items that are not currently\n     * rendered.\n     */\n    measureRangeSize(range, orientation) {\n        if (range.start >= range.end) {\n            return 0;\n        }\n        if ((range.start < this._renderedRange.start || range.end > this._renderedRange.end) &&\n            (typeof ngDevMode === 'undefined' || ngDevMode)) {\n            throw Error(`Error: attempted to measure an item that isn't rendered.`);\n        }\n        // The index into the list of rendered views for the first item in the range.\n        const renderedStartIndex = range.start - this._renderedRange.start;\n        // The length of the range we're measuring.\n        const rangeLen = range.end - range.start;\n        // Loop over all the views, find the first and land node and compute the size by subtracting\n        // the top of the first node from the bottom of the last one.\n        let firstNode;\n        let lastNode;\n        // Find the first node by starting from the beginning and going forwards.\n        for (let i = 0; i < rangeLen; i++) {\n            const view = this._viewContainerRef.get(i + renderedStartIndex);\n            if (view && view.rootNodes.length) {\n                firstNode = lastNode = view.rootNodes[0];\n                break;\n            }\n        }\n        // Find the last node by starting from the end and going backwards.\n        for (let i = rangeLen - 1; i > -1; i--) {\n            const view = this._viewContainerRef.get(i + renderedStartIndex);\n            if (view && view.rootNodes.length) {\n                lastNode = view.rootNodes[view.rootNodes.length - 1];\n                break;\n            }\n        }\n        return firstNode && lastNode ?\n            getOffset(orientation, 'end', lastNode) - getOffset(orientation, 'start', firstNode) : 0;\n    }\n    ngDoCheck() {\n        if (this._differ && this._needsUpdate) {\n            // TODO(mmalerba): We should differentiate needs update due to scrolling and a new portion of\n            // this list being rendered (can use simpler algorithm) vs needs update due to data actually\n            // changing (need to do this diff).\n            const changes = this._differ.diff(this._renderedItems);\n            if (!changes) {\n                this._updateContext();\n            }\n            else {\n                this._applyChanges(changes);\n            }\n            this._needsUpdate = false;\n        }\n    }\n    ngOnDestroy() {\n        this._viewport.detach();\n        this._dataSourceChanges.next(undefined);\n        this._dataSourceChanges.complete();\n        this.viewChange.complete();\n        this._destroyed.next();\n        this._destroyed.complete();\n        this._viewRepeater.detach();\n    }\n    /** React to scroll state changes in the viewport. */\n    _onRenderedDataChange() {\n        if (!this._renderedRange) {\n            return;\n        }\n        this._renderedItems = this._data.slice(this._renderedRange.start, this._renderedRange.end);\n        if (!this._differ) {\n            // Use a wrapper function for the `trackBy` so any new values are\n            // picked up automatically without having to recreate the differ.\n            this._differ = this._differs.find(this._renderedItems).create((index, item) => {\n                return this.cdkVirtualForTrackBy ? this.cdkVirtualForTrackBy(index, item) : item;\n            });\n        }\n        this._needsUpdate = true;\n    }\n    /** Swap out one `DataSource` for another. */\n    _changeDataSource(oldDs, newDs) {\n        if (oldDs) {\n            oldDs.disconnect(this);\n        }\n        this._needsUpdate = true;\n        return newDs ? newDs.connect(this) : of();\n    }\n    /** Update the `CdkVirtualForOfContext` for all views. */\n    _updateContext() {\n        const count = this._data.length;\n        let i = this._viewContainerRef.length;\n        while (i--) {\n            const view = this._viewContainerRef.get(i);\n            view.context.index = this._renderedRange.start + i;\n            view.context.count = count;\n            this._updateComputedContextProperties(view.context);\n            view.detectChanges();\n        }\n    }\n    /** Apply changes to the DOM. */\n    _applyChanges(changes) {\n        this._viewRepeater.applyChanges(changes, this._viewContainerRef, (record, _adjustedPreviousIndex, currentIndex) => this._getEmbeddedViewArgs(record, currentIndex), (record) => record.item);\n        // Update $implicit for any items that had an identity change.\n        changes.forEachIdentityChange((record) => {\n            const view = this._viewContainerRef.get(record.currentIndex);\n            view.context.$implicit = record.item;\n        });\n        // Update the context variables on all items.\n        const count = this._data.length;\n        let i = this._viewContainerRef.length;\n        while (i--) {\n            const view = this._viewContainerRef.get(i);\n            view.context.index = this._renderedRange.start + i;\n            view.context.count = count;\n            this._updateComputedContextProperties(view.context);\n        }\n    }\n    /** Update the computed properties on the `CdkVirtualForOfContext`. */\n    _updateComputedContextProperties(context) {\n        context.first = context.index === 0;\n        context.last = context.index === context.count - 1;\n        context.even = context.index % 2 === 0;\n        context.odd = !context.even;\n    }\n    _getEmbeddedViewArgs(record, index) {\n        // Note that it's important that we insert the item directly at the proper index,\n        // rather than inserting it and the moving it in place, because if there's a directive\n        // on the same node that injects the `ViewContainerRef`, Angular will insert another\n        // comment node which can throw off the move when it's being repeated for all items.\n        return {\n            templateRef: this._template,\n            context: {\n                $implicit: record.item,\n                // It's guaranteed that the iterable is not \"undefined\" or \"null\" because we only\n                // generate views for elements if the \"cdkVirtualForOf\" iterable has elements.\n                cdkVirtualForOf: this._cdkVirtualForOf,\n                index: -1,\n                count: -1,\n                first: false,\n                last: false,\n                odd: false,\n                even: false\n            },\n            index,\n        };\n    }\n}\nCdkVirtualForOf.ɵfac = function CdkVirtualForOf_Factory(t) { return new (t || CdkVirtualForOf)(ɵngcc0.ɵɵdirectiveInject(ɵngcc0.ViewContainerRef), ɵngcc0.ɵɵdirectiveInject(ɵngcc0.TemplateRef), ɵngcc0.ɵɵdirectiveInject(ɵngcc0.IterableDiffers), ɵngcc0.ɵɵdirectiveInject(_VIEW_REPEATER_STRATEGY), ɵngcc0.ɵɵdirectiveInject(CdkVirtualScrollViewport, 4), ɵngcc0.ɵɵdirectiveInject(ɵngcc0.NgZone)); };\nCdkVirtualForOf.ɵdir = ɵngcc0.ɵɵdefineDirective({ type: CdkVirtualForOf, selectors: [[\"\", \"cdkVirtualFor\", \"\", \"cdkVirtualForOf\", \"\"]], inputs: { cdkVirtualForOf: \"cdkVirtualForOf\", cdkVirtualForTrackBy: \"cdkVirtualForTrackBy\", cdkVirtualForTemplate: \"cdkVirtualForTemplate\", cdkVirtualForTemplateCacheSize: \"cdkVirtualForTemplateCacheSize\" }, features: [ɵngcc0.ɵɵProvidersFeature([\n            { provide: _VIEW_REPEATER_STRATEGY, useClass: _RecycleViewRepeaterStrategy },\n        ])] });\nCdkVirtualForOf.ctorParameters = () => [\n    { type: ViewContainerRef },\n    { type: TemplateRef },\n    { type: IterableDiffers },\n    { type: _RecycleViewRepeaterStrategy, decorators: [{ type: Inject, args: [_VIEW_REPEATER_STRATEGY,] }] },\n    { type: CdkVirtualScrollViewport, decorators: [{ type: SkipSelf }] },\n    { type: NgZone }\n];\nCdkVirtualForOf.propDecorators = {\n    cdkVirtualForOf: [{ type: Input }],\n    cdkVirtualForTrackBy: [{ type: Input }],\n    cdkVirtualForTemplate: [{ type: Input }],\n    cdkVirtualForTemplateCacheSize: [{ type: Input }]\n};\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(CdkVirtualForOf, [{\n        type: Directive,\n        args: [{\n                selector: '[cdkVirtualFor][cdkVirtualForOf]',\n                providers: [\n                    { provide: _VIEW_REPEATER_STRATEGY, useClass: _RecycleViewRepeaterStrategy },\n                ]\n            }]\n    }], function () { return [{ type: ɵngcc0.ViewContainerRef }, { type: ɵngcc0.TemplateRef }, { type: ɵngcc0.IterableDiffers }, { type: ɵngcc3._RecycleViewRepeaterStrategy, decorators: [{\n                type: Inject,\n                args: [_VIEW_REPEATER_STRATEGY]\n            }] }, { type: CdkVirtualScrollViewport, decorators: [{\n                type: SkipSelf\n            }] }, { type: ɵngcc0.NgZone }]; }, { cdkVirtualForOf: [{\n            type: Input\n        }], cdkVirtualForTrackBy: [{\n            type: Input\n        }], cdkVirtualForTemplate: [{\n            type: Input\n        }], cdkVirtualForTemplateCacheSize: [{\n            type: Input\n        }] }); })();\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\nclass CdkScrollableModule {\n}\nCdkScrollableModule.ɵmod = ɵngcc0.ɵɵdefineNgModule({ type: CdkScrollableModule });\nCdkScrollableModule.ɵinj = ɵngcc0.ɵɵdefineInjector({ factory: function CdkScrollableModule_Factory(t) { return new (t || CdkScrollableModule)(); } });\n(function () { (typeof ngJitMode === \"undefined\" || ngJitMode) && ɵngcc0.ɵɵsetNgModuleScope(CdkScrollableModule, { declarations: [CdkScrollable], exports: [CdkScrollable] }); })();\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(CdkScrollableModule, [{\n        type: NgModule,\n        args: [{\n                exports: [CdkScrollable],\n                declarations: [CdkScrollable]\n            }]\n    }], null, null); })();\n/**\n * @docs-primary-export\n */\nclass ScrollingModule {\n}\nScrollingModule.ɵmod = ɵngcc0.ɵɵdefineNgModule({ type: ScrollingModule });\nScrollingModule.ɵinj = ɵngcc0.ɵɵdefineInjector({ factory: function ScrollingModule_Factory(t) { return new (t || ScrollingModule)(); }, imports: [[\n            BidiModule,\n            PlatformModule,\n            CdkScrollableModule\n        ], BidiModule, CdkScrollableModule] });\n(function () { (typeof ngJitMode === \"undefined\" || ngJitMode) && ɵngcc0.ɵɵsetNgModuleScope(ScrollingModule, { declarations: function () { return [CdkFixedSizeVirtualScroll, CdkVirtualForOf, CdkVirtualScrollViewport]; }, imports: function () { return [BidiModule,\n        PlatformModule, CdkScrollableModule]; }, exports: function () { return [BidiModule, CdkScrollableModule, CdkFixedSizeVirtualScroll, CdkVirtualForOf, CdkVirtualScrollViewport]; } }); })();\n/*@__PURE__*/ (function () { ɵngcc0.ɵsetClassMetadata(ScrollingModule, [{\n        type: NgModule,\n        args: [{\n                imports: [\n                    BidiModule,\n                    PlatformModule,\n                    CdkScrollableModule\n                ],\n                exports: [\n                    BidiModule,\n                    CdkScrollableModule,\n                    CdkFixedSizeVirtualScroll,\n                    CdkVirtualForOf,\n                    CdkVirtualScrollViewport,\n                ],\n                declarations: [\n                    CdkFixedSizeVirtualScroll,\n                    CdkVirtualForOf,\n                    CdkVirtualScrollViewport,\n                ]\n            }]\n    }], null, null); })();\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Generated bundle index. Do not edit.\n */\n\nexport { CdkFixedSizeVirtualScroll, CdkScrollable, CdkScrollableModule, CdkVirtualForOf, CdkVirtualScrollViewport, DEFAULT_RESIZE_TIME, DEFAULT_SCROLL_TIME, FixedSizeVirtualScrollStrategy, ScrollDispatcher, ScrollingModule, VIRTUAL_SCROLL_STRATEGY, ViewportRuler, _fixedSizeVirtualScrollStrategyFactory };\n\n//# sourceMappingURL=scrolling.js.map"],"sourceRoot":"webpack:///"}