text: /**
   * @license
   * Copyright Google LLC All Rights Reserved.
   *
   * Use of this source code is governed by an MIT-style license that can be
   * found in the LICENSE file at https://angular.io/license
   */
  import { Directive, ElementRef, Inject, InjectionToken, NgZone, Optional, TemplateRef, ChangeDetectionStrategy, Component, ContentChild, Input, ViewChild, ViewContainerRef, ViewEncapsulation, ChangeDetectorRef, Output, EventEmitter, ComponentFactoryResolver, forwardRef, ContentChildren, Attribute, NgModule } from '@angular/core';
  import { ANIMATION_MODULE_TYPE } from '@angular/platform-browser/animations';
  import { __extends } from 'tslib';
  import { CdkPortal, TemplatePortal, CdkPortalOutlet, PortalHostDirective, PortalModule } from '@angular/cdk/portal';
  import { mixinDisabled, mixinDisableRipple, mixinColor, MAT_RIPPLE_GLOBAL_OPTIONS, mixinTabIndex, RippleRenderer, MatCommonModule, MatRippleModule } from '@angular/material/core';
  import { Subject, Subscription, merge, of, timer, fromEvent } from 'rxjs';
  import { animate, state, style, transition, trigger } from '@angular/animations';
  import { Directionality } from '@angular/cdk/bidi';
  import { startWith, distinctUntilChanged, takeUntil } from 'rxjs/operators';
  import { coerceNumberProperty, coerceBooleanProperty } from '@angular/cdk/coercion';
  import { END, ENTER, HOME, SPACE, hasModifierKey } from '@angular/cdk/keycodes';
  import { ViewportRuler } from '@angular/cdk/scrolling';
  import { FocusKeyManager, FocusMonitor, A11yModule } from '@angular/cdk/a11y';
  import { Platform, normalizePassiveListenerOptions } from '@angular/cdk/platform';
  import { ObserversModule } from '@angular/cdk/observers';
  import { CommonModule } from '@angular/common';
  
  /**
   * @fileoverview added by tsickle
   * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
   */
  /**
   * Injection token for the MatInkBar's Positioner.
   * @type {?}
   */
  var _MAT_INK_BAR_POSITIONER = new InjectionToken('MatInkBarPositioner', {
      providedIn: 'root',
      factory: _MAT_INK_BAR_POSITIONER_FACTORY
  });
  /**
   * The default positioner function for the MatInkBar.
   * \@docs-private
   * @return {?}
   */
  function _MAT_INK_BAR_POSITIONER_FACTORY() {
      /** @type {?} */
      var method = (/**
       * @param {?} element
       * @return {?}
       */
      function (element) { return ({
          left: element ? (element.offsetLeft || 0) + 'px' : '0',
          width: element ? (element.offsetWidth || 0) + 'px' : '0',
      }); });
      return method;
  }
  /**
   * The ink-bar is used to display and animate the line underneath the current active tab label.
   * \@docs-private
   */
  var MatInkBar = /** @class */ (function () {
      function MatInkBar(_elementRef, _ngZone, _inkBarPositioner, _animationMode) {
          this._elementRef = _elementRef;
          this._ngZone = _ngZone;
          this._inkBarPositioner = _inkBarPositioner;
          this._animationMode = _animationMode;
      }
      /**
       * Calculates the styles from the provided element in order to align the ink-bar to that element.
       * Shows the ink bar if previously set as hidden.
       * @param element
       */
      /**
       * Calculates the styles from the provided element in order to align the ink-bar to that element.
       * Shows the ink bar if previously set as hidden.
       * @param {?} element
       * @return {?}
       */
      MatInkBar.prototype.alignToElement = /**
       * Calculates the styles from the provided element in order to align the ink-bar to that element.
       * Shows the ink bar if previously set as hidden.
       * @param {?} element
       * @return {?}
       */
      function (element) {
          var _this = this;
          this.show();
          if (typeof requestAnimationFrame !== 'undefined') {
              this._ngZone.runOutsideAngular((/**
               * @return {?}
               */
              function () {
                  requestAnimationFrame((/**
                   * @return {?}
                   */
                  function () { return _this._setStyles(element); }));
              }));
          }
          else {
              this._setStyles(element);
          }
      };
      /** Shows the ink bar. */
      /**
       * Shows the ink bar.
       * @return {?}
       */
      MatInkBar.prototype.show = /**
       * Shows the ink bar.
       * @return {?}
       */
      function () {
          this._elementRef.nativeElement.style.visibility = 'visible';
      };
      /** Hides the ink bar. */
      /**
       * Hides the ink bar.
       * @return {?}
       */
      MatInkBar.prototype.hide = /**
       * Hides the ink bar.
       * @return {?}
       */
      function () {
          this._elementRef.nativeElement.style.visibility = 'hidden';
      };
      /**
       * Sets the proper styles to the ink bar element.
       * @param element
       */
      /**
       * Sets the proper styles to the ink bar element.
       * @private
       * @param {?} element
       * @return {?}
       */
      MatInkBar.prototype._setStyles = /**
       * Sets the proper styles to the ink bar element.
       * @private
       * @param {?} element
       * @return {?}
       */
      function (element) {
          /** @type {?} */
          var positions = this._inkBarPositioner(element);
          /** @type {?} */
          var inkBar = this._elementRef.nativeElement;
          inkBar.style.left = positions.left;
          inkBar.style.width = positions.width;
      };
      MatInkBar.decorators = [
          { type: Directive, args: [{
                      selector: 'mat-ink-bar',
                      host: {
                          'class': 'mat-ink-bar',
                          '[class._mat-animation-noopable]': "_animationMode === 'NoopAnimations'",
                      },
                  },] },
      ];
      /** @nocollapse */
      MatInkBar.ctorParameters = function () { return [
          { type: ElementRef },
          { type: NgZone },
          { type: undefined, decorators: [{ type: Inject, args: [_MAT_INK_BAR_POSITIONER,] }] },
          { type: String, decorators: [{ type: Optional }, { type: Inject, args: [ANIMATION_MODULE_TYPE,] }] }
      ]; };
      return MatInkBar;
  }());
  
  /**
   * @fileoverview added by tsickle
   * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
   */
  /**
   * Decorates the `ng-template` tags and reads out the template from it.
   */
  var MatTabContent = /** @class */ (function () {
      function MatTabContent(template) {
          this.template = template;
      }
      MatTabContent.decorators = [
          { type: Directive, args: [{ selector: '[matTabContent]' },] },
      ];
      /** @nocollapse */
      MatTabContent.ctorParameters = function () { return [
          { type: TemplateRef }
      ]; };
      return MatTabContent;
  }());
  
  /**
   * @fileoverview added by tsickle
   * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
   */
  /**
   * Used to flag tab labels for use with the portal directive
   */
  var MatTabLabel = /** @class */ (function (_super) {
      __extends(MatTabLabel, _super);
      function MatTabLabel() {
          return _super !== null && _super.apply(this, arguments) || this;
      }
      MatTabLabel.decorators = [
          { type: Directive, args: [{
                      selector: '[mat-tab-label], [matTabLabel]',
                  },] },
      ];
      return MatTabLabel;
  }(CdkPortal));
  
  /**
   * @fileoverview added by tsickle
   * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
   */
  // Boilerplate for applying mixins to MatTab.
  /**
   * \@docs-private
   */
  var 
  // Boilerplate for applying mixins to MatTab.
  /**
   * \@docs-private
   */
  MatTabBase = /** @class */ (function () {
      function MatTabBase() {
      }
      return MatTabBase;
  }());
  /** @type {?} */
  var _MatTabMixinBase = mixinDisabled(MatTabBase);
  var MatTab = /** @class */ (function (_super) {
      __extends(MatTab, _super);
      function MatTab(_viewContainerRef) {
          var _this = _super.call(this) || this;
          _this._viewContainerRef = _viewContainerRef;
          /**
           * Plain text label for the tab, used when there is no template label.
           */
          _this.textLabel = '';
          /**
           * Portal that will be the hosted content of the tab
           */
          _this._contentPortal = null;
          /**
           * Emits whenever the internal state of the tab changes.
           */
          _this._stateChanges = new Subject();
          /**
           * The relatively indexed position where 0 represents the center, negative is left, and positive
           * represents the right.
           */
          _this.position = null;
          /**
           * The initial relatively index origin of the tab if it was created and selected after there
           * was already a selected tab. Provides context of what position the tab should originate from.
           */
          _this.origin = null;
          /**
           * Whether the tab is currently active.
           */
          _this.isActive = false;
          return _this;
      }
      Object.defineProperty(MatTab.prototype, "content", {
          /** @docs-private */
          get: /**
           * \@docs-private
           * @return {?}
           */
          function () {
              return this._contentPortal;
          },
          enumerable: true,
          configurable: true
      });
      /**
       * @param {?} changes
       * @return {?}
       */
      MatTab.prototype.ngOnChanges = /**
       * @param {?} changes
       * @return {?}
       */
      function (changes) {
          if (changes.hasOwnProperty('textLabel') || changes.hasOwnProperty('disabled')) {
              this._stateChanges.next();
          }
      };
      /**
       * @return {?}
       */
      MatTab.prototype.ngOnDestroy = /**
       * @return {?}
       */
      function () {
          this._stateChanges.complete();
      };
      /**
       * @return {?}
       */
      MatTab.prototype.ngOnInit = /**
       * @return {?}
       */
      function () {
          this._contentPortal = new TemplatePortal(this._explicitContent || this._implicitContent, this._viewContainerRef);
      };
      MatTab.decorators = [
          { type: Component, args: [{selector: 'mat-tab',
                      template: "<ng-template><ng-content></ng-content></ng-template>",
                      inputs: ['disabled'],
                      changeDetection: ChangeDetectionStrategy.OnPush,
                      encapsulation: ViewEncapsulation.None,
                      exportAs: 'matTab',
                  },] },
      ];
      /** @nocollapse */
      MatTab.ctorParameters = function () { return [
          { type: ViewContainerRef }
      ]; };
      MatTab.propDecorators = {
          templateLabel: [{ type: ContentChild, args: [MatTabLabel, { static: false },] }],
          _explicitContent: [{ type: ContentChild, args: [MatTabContent, { read: TemplateRef, static: true },] }],
          _implicitContent: [{ type: ViewChild, args: [TemplateRef, { static: true },] }],
          textLabel: [{ type: Input, args: ['label',] }],
          ariaLabel: [{ type: Input, args: ['aria-label',] }],
          ariaLabelledby: [{ type: Input, args: ['aria-labelledby',] }]
      };
      return MatTab;
  }(_MatTabMixinBase));
  
  /**
   * @fileoverview added by tsickle
   * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
   */
  /**
   * Animations used by the Material tabs.
   * \@docs-private
   * @type {?}
   */
  var matTabsAnimations = {
      /**
       * Animation translates a tab along the X axis.
       */
      translateTab: trigger('translateTab', [
          // Note: transitions to `none` instead of 0, because some browsers might blur the content.
          state('center, void, left-origin-center, right-origin-center', style({ transform: 'none' })),
          // If the tab is either on the left or right, we additionally add a `min-height` of 1px
          // in order to ensure that the element has a height before its state changes. This is
          // necessary because Chrome does seem to skip the transition in RTL mode if the element does
          // not have a static height and is not rendered. See related issue: #9465
          state('left', style({ transform: 'translate3d(-100%, 0, 0)', minHeight: '1px' })),
          state('right', style({ transform: 'translate3d(100%, 0, 0)', minHeight: '1px' })),
          transition('* => left, * => right, left => center, right => center', animate('{{animationDuration}} cubic-bezier(0.35, 0, 0.25, 1)')),
          transition('void => left-origin-center', [
              style({ transform: 'translate3d(-100%, 0, 0)' }),
              animate('{{animationDuration}} cubic-bezier(0.35, 0, 0.25, 1)')
          ]),
          transition('void => right-origin-center', [
              style({ transform: 'translate3d(100%, 0, 0)' }),
              animate('{{animationDuration}} cubic-bezier(0.35, 0, 0.25, 1)')
          ])
      ])
  };
  
  /**
   * @fileoverview added by tsickle
   * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
   */
  /**
   * The portal host directive for the contents of the tab.
   * \@docs-private
   */
  var MatTabBodyPortal = /** @class */ (function (_super) {
      __extends(MatTabBodyPortal, _super);
      function MatTabBodyPortal(componentFactoryResolver, viewContainerRef, _host) {
          var _this = _super.call(this, componentFactoryResolver, viewContainerRef) || this;
          _this._host = _host;
          /**
           * Subscription to events for when the tab body begins centering.
           */
          _this._centeringSub = Subscription.EMPTY;
          /**
           * Subscription to events for when the tab body finishes leaving from center position.
           */
          _this._leavingSub = Subscription.EMPTY;
          return _this;
      }
      /** Set initial visibility or set up subscription for changing visibility. */
      /**
       * Set initial visibility or set up subscription for changing visibility.
       * @return {?}
       */
      MatTabBodyPortal.prototype.ngOnInit = /**
       * Set initial visibility or set up subscription for changing visibility.
       * @return {?}
       */
      function () {
          var _this = this;
          _super.prototype.ngOnInit.call(this);
          this._centeringSub = this._host._beforeCentering
              .pipe(startWith(this._host._isCenterPosition(this._host._position)))
              .subscribe((/**
           * @param {?} isCentering
           * @return {?}
           */
          function (isCentering) {
              if (isCentering && !_this.hasAttached()) {
                  _this.attach(_this._host._content);
              }
          }));
          this._leavingSub = this._host._afterLeavingCenter.subscribe((/**
           * @return {?}
           */
          function () {
              _this.detach();
          }));
      };
      /** Clean up centering subscription. */
      /**
       * Clean up centering subscription.
       * @return {?}
       */
      MatTabBodyPortal.prototype.ngOnDestroy = /**
       * Clean up centering subscription.
       * @return {?}
       */
      function () {
          _super.prototype.ngOnDestroy.call(this);
          this._centeringSub.unsubscribe();
          this._leavingSub.unsubscribe();
      };
      MatTabBodyPortal.decorators = [
          { type: Directive, args: [{
                      selector: '[matTabBodyHost]'
                  },] },
      ];
      /** @nocollapse */
      MatTabBodyPortal.ctorParameters = function () { return [
          { type: ComponentFactoryResolver },
          { type: ViewContainerRef },
          { type: MatTabBody, decorators: [{ type: Inject, args: [forwardRef((/**
                           * @return {?}
                           */
                          function () { return MatTabBody; })),] }] }
      ]; };
      return MatTabBodyPortal;
  }(CdkPortalOutlet));
  /**
   * Wrapper for the contents of a tab.
   * \@docs-private
   */
  var MatTabBody = /** @class */ (function () {
      function MatTabBody(_elementRef, _dir, changeDetectorRef) {
          var _this = this;
          this._elementRef = _elementRef;
          this._dir = _dir;
          /**
           * Subscription to the directionality change observable.
           */
          this._dirChangeSubscription = Subscription.EMPTY;
          /**
           * Emits when an animation on the tab is complete.
           */
          this._translateTabComplete = new Subject();
          /**
           * Event emitted when the tab begins to animate towards the center as the active tab.
           */
          this._onCentering = new EventEmitter();
          /**
           * Event emitted before the centering of the tab begins.
           */
          this._beforeCentering = new EventEmitter();
          /**
           * Event emitted before the centering of the tab begins.
           */
          this._afterLeavingCenter = new EventEmitter();
          /**
           * Event emitted when the tab completes its animation towards the center.
           */
          this._onCentered = new EventEmitter(true);
          // Note that the default value will always be overwritten by `MatTabBody`, but we need one
          // anyway to prevent the animations module from throwing an error if the body is used on its own.
          /**
           * Duration for the tab's animation.
           */
          this.animationDuration = '500ms';
          if (_dir) {
              this._dirChangeSubscription = _dir.change.subscribe((/**
               * @param {?} dir
               * @return {?}
               */
              function (dir) {
                  _this._computePositionAnimationState(dir);
                  changeDetectorRef.markForCheck();
              }));
          }
          // Ensure that we get unique animation events, because the `.done` callback can get
          // invoked twice in some browsers. See https://github.com/angular/angular/issues/24084.
          this._translateTabComplete.pipe(distinctUntilChanged((/**
           * @param {?} x
           * @param {?} y
           * @return {?}
           */
          function (x, y) {
              return x.fromState === y.fromState && x.toState === y.toState;
          }))).subscribe((/**
           * @param {?} event
           * @return {?}
           */
          function (event) {
              // If the transition to the center is complete, emit an event.
              if (_this._isCenterPosition(event.toState) && _this._isCenterPosition(_this._position)) {
                  _this._onCentered.emit();
              }
              if (_this._isCenterPosition(event.fromState) && !_this._isCenterPosition(_this._position)) {
                  _this._afterLeavingCenter.emit();
              }
          }));
      }
      Object.defineProperty(MatTabBody.prototype, "position", {
          /** The shifted index position of the tab body, where zero represents the active center tab. */
          set: /**
           * The shifted index position of the tab body, where zero represents the active center tab.
           * @param {?} position
           * @return {?}
           */
          function (position) {
              this._positionIndex = position;
              this._computePositionAnimationState();
          },
          enumerable: true,
          configurable: true
      });
      /**
       * After initialized, check if the content is centered and has an origin. If so, set the
       * special position states that transition the tab from the left or right before centering.
       */
      /**
       * After initialized, check if the content is centered and has an origin. If so, set the
       * special position states that transition the tab from the left or right before centering.
       * @return {?}
       */
      MatTabBody.prototype.ngOnInit = /**
       * After initialized, check if the content is centered and has an origin. If so, set the
       * special position states that transition the tab from the left or right before centering.
       * @return {?}
       */
      function () {
          if (this._position == 'center' && this.origin != null) {
              this._position = this._computePositionFromOrigin();
          }
      };
      /**
       * @return {?}
       */
      MatTabBody.prototype.ngOnDestroy = /**
       * @return {?}
       */
      function () {
          this._dirChangeSubscription.unsubscribe();
          this._translateTabComplete.complete();
      };
      /**
       * @param {?} event
       * @return {?}
       */
      MatTabBody.prototype._onTranslateTabStarted = /**
       * @param {?} event
       * @return {?}
       */
      function (event) {
          /** @type {?} */
          var isCentering = this._isCenterPosition(event.toState);
          this._beforeCentering.emit(isCentering);
          if (isCentering) {
              this._onCentering.emit(this._elementRef.nativeElement.clientHeight);
          }
      };
      /** The text direction of the containing app. */
      /**
       * The text direction of the containing app.
       * @return {?}
       */
      MatTabBody.prototype._getLayoutDirection = /**
       * The text direction of the containing app.
       * @return {?}
       */
      function () {
          return this._dir && this._dir.value === 'rtl' ? 'rtl' : 'ltr';
      };
      /** Whether the provided position state is considered center, regardless of origin. */
      /**
       * Whether the provided position state is considered center, regardless of origin.
       * @param {?} position
       * @return {?}
       */
      MatTabBody.prototype._isCenterPosition = /**
       * Whether the provided position state is considered center, regardless of origin.
       * @param {?} position
       * @return {?}
       */
      function (position) {
          return position == 'center' ||
              position == 'left-origin-center' ||
              position == 'right-origin-center';
      };
      /** Computes the position state that will be used for the tab-body animation trigger. */
      /**
       * Computes the position state that will be used for the tab-body animation trigger.
       * @private
       * @param {?=} dir
       * @return {?}
       */
      MatTabBody.prototype._computePositionAnimationState = /**
       * Computes the position state that will be used for the tab-body animation trigger.
       * @private
       * @param {?=} dir
       * @return {?}
       */
      function (dir) {
          if (dir === void 0) { dir = this._getLayoutDirection(); }
          if (this._positionIndex < 0) {
              this._position = dir == 'ltr' ? 'left' : 'right';
          }
          else if (this._positionIndex > 0) {
              this._position = dir == 'ltr' ? 'right' : 'left';
          }
          else {
              this._position = 'center';
          }
      };
      /**
       * Computes the position state based on the specified origin position. This is used if the
       * tab is becoming visible immediately after creation.
       */
      /**
       * Computes the position state based on the specified origin position. This is used if the
       * tab is becoming visible immediately after creation.
       * @private
       * @return {?}
       */
      MatTabBody.prototype._computePositionFromOrigin = /**
       * Computes the position state based on the specified origin position. This is used if the
       * tab is becoming visible immediately after creation.
       * @private
       * @return {?}
       */
      function () {
          /** @type {?} */
          var dir = this._getLayoutDirection();
          if ((dir == 'ltr' && this.origin <= 0) || (dir == 'rtl' && this.origin > 0)) {
              return 'left-origin-center';
          }
          return 'right-origin-center';
      };
      MatTabBody.decorators = [
          { type: Component, args: [{selector: 'mat-tab-body',
                      template: "<div class=\"mat-tab-body-content\" #content [@translateTab]=\"{ value: _position, params: {animationDuration: animationDuration} }\" (@translateTab.start)=\"_onTranslateTabStarted($event)\" (@translateTab.done)=\"_translateTabComplete.next($event)\"><ng-template matTabBodyHost></ng-template></div>",
                      styles: [".mat-tab-body-content{height:100%;overflow:auto}.mat-tab-group-dynamic-height .mat-tab-body-content{overflow:hidden}"],
                      encapsulation: ViewEncapsulation.None,
                      changeDetection: ChangeDetectionStrategy.OnPush,
                      animations: [matTabsAnimations.translateTab],
                      host: {
                          'class': 'mat-tab-body',
                      },
                  },] },
      ];
      /** @nocollapse */
      MatTabBody.ctorParameters = function () { return [
          { type: ElementRef },
          { type: Directionality, decorators: [{ type: Optional }] },
          { type: ChangeDetectorRef }
      ]; };
      MatTabBody.propDecorators = {
          _onCentering: [{ type: Output }],
          _beforeCentering: [{ type: Output }],
          _afterLeavingCenter: [{ type: Output }],
          _onCentered: [{ type: Output }],
          _portalHost: [{ type: ViewChild, args: [PortalHostDirective, { static: false },] }],
          _content: [{ type: Input, args: ['content',] }],
          origin: [{ type: Input }],
          animationDuration: [{ type: Input }],
          position: [{ type: Input }]
      };
      return MatTabBody;
  }());
  
  /**
   * @fileoverview added by tsickle
   * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
   */
  // Boilerplate for applying mixins to MatTabLabelWrapper.
  /**
   * \@docs-private
   */
  var 
  // Boilerplate for applying mixins to MatTabLabelWrapper.
  /**
   * \@docs-private
   */
  MatTabLabelWrapperBase = /** @class */ (function () {
      function MatTabLabelWrapperBase() {
      }
      return MatTabLabelWrapperBase;
  }());
  /** @type {?} */
  var _MatTabLabelWrapperMixinBase = mixinDisabled(MatTabLabelWrapperBase);
  /**
   * Used in the `mat-tab-group` view to display tab labels.
   * \@docs-private
   */
  var MatTabLabelWrapper = /** @class */ (function (_super) {
      __extends(MatTabLabelWrapper, _super);
      function MatTabLabelWrapper(elementRef) {
          var _this = _super.call(this) || this;
          _this.elementRef = elementRef;
          return _this;
      }
      /** Sets focus on the wrapper element */
      /**
       * Sets focus on the wrapper element
       * @return {?}
       */
      MatTabLabelWrapper.prototype.focus = /**
       * Sets focus on the wrapper element
       * @return {?}
       */
      function () {
          this.elementRef.nativeElement.focus();
      };
      /**
       * @return {?}
       */
      MatTabLabelWrapper.prototype.getOffsetLeft = /**
       * @return {?}
       */
      function () {
          return this.elementRef.nativeElement.offsetLeft;
      };
      /**
       * @return {?}
       */
      MatTabLabelWrapper.prototype.getOffsetWidth = /**
       * @return {?}
       */
      function () {
          return this.elementRef.nativeElement.offsetWidth;
      };
      MatTabLabelWrapper.decorators = [
          { type: Directive, args: [{
                      selector: '[matTabLabelWrapper]',
                      inputs: ['disabled'],
                      host: {
                          '[class.mat-tab-disabled]': 'disabled',
                          '[attr.aria-disabled]': '!!disabled',
                      }
                  },] },
      ];
      /** @nocollapse */
      MatTabLabelWrapper.ctorParameters = function () { return [
          { type: ElementRef }
      ]; };
      return MatTabLabelWrapper;
  }(_MatTabLabelWrapperMixinBase));
  
  /**
   * @fileoverview added by tsickle
   * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
   */
  /**
   * Config used to bind passive event listeners
   * @type {?}
   */
  var passiveEventListenerOptions = (/** @type {?} */ (normalizePassiveListenerOptions({ passive: true })));
  /**
   * The distance in pixels that will be overshot when scrolling a tab label into view. This helps
   * provide a small affordance to the label next to it.
   * @type {?}
   */
  var EXAGGERATED_OVERSCROLL = 60;
  /**
   * Amount of milliseconds to wait before starting to scroll the header automatically.
   * Set a little conservatively in order to handle fake events dispatched on touch devices.
   * @type {?}
   */
  var HEADER_SCROLL_DELAY = 650;
  /**
   * Interval in milliseconds at which to scroll the header
   * while the user is holding their pointer.
   * @type {?}
   */
  var HEADER_SCROLL_INTERVAL = 100;
  // Boilerplate for applying mixins to MatTabHeader.
  /**
   * \@docs-private
   */
  var 
  // Boilerplate for applying mixins to MatTabHeader.
  /**
   * \@docs-private
   */
  MatTabHeaderBase = /** @class */ (function () {
      function MatTabHeaderBase() {
      }
      return MatTabHeaderBase;
  }());
  /** @type {?} */
  var _MatTabHeaderMixinBase = mixinDisableRipple(MatTabHeaderBase);
  /**
   * The header of the tab group which displays a list of all the tabs in the tab group. Includes
   * an ink bar that follows the currently selected tab. When the tabs list's width exceeds the
   * width of the header container, then arrows will be displayed to allow the user to scroll
   * left and right across the header.
   * \@docs-private
   */
  var MatTabHeader = /** @class */ (function (_super) {
      __extends(MatTabHeader, _super);
      function MatTabHeader(_elementRef, _changeDetectorRef, _viewportRuler, _dir, _ngZone, _platform, _animationMode) {
          var _this = _super.call(this) || this;
          _this._elementRef = _elementRef;
          _this._changeDetectorRef = _changeDetectorRef;
          _this._viewportRuler = _viewportRuler;
          _this._dir = _dir;
          _this._ngZone = _ngZone;
          _this._platform = _platform;
          _this._animationMode = _animationMode;
          /**
           * The distance in pixels that the tab labels should be translated to the left.
           */
          _this._scrollDistance = 0;
          /**
           * Whether the header should scroll to the selected index after the view has been checked.
           */
          _this._selectedIndexChanged = false;
          /**
           * Emits when the component is destroyed.
           */
          _this._destroyed = new Subject();
          /**
           * Whether the controls for pagination should be displayed
           */
          _this._showPaginationControls = false;
          /**
           * Whether the tab list can be scrolled more towards the end of the tab label list.
           */
          _this._disableScrollAfter = true;
          /**
           * Whether the tab list can be scrolled more towards the beginning of the tab label list.
           */
          _this._disableScrollBefore = true;
          /**
           * Stream that will stop the automated scrolling.
           */
          _this._stopScrolling = new Subject();
          _this._selectedIndex = 0;
          /**
           * Event emitted when the option is selected.
           */
          _this.selectFocusedIndex = new EventEmitter();
          /**
           * Event emitted when a label is focused.
           */
          _this.indexFocused = new EventEmitter();
          // Bind the `mouseleave` event on the outside since it doesn't change anything in the view.
          _ngZone.runOutsideAngular((/**
           * @return {?}
           */
          function () {
              fromEvent(_elementRef.nativeElement, 'mouseleave')
                  .pipe(takeUntil(_this._destroyed))
                  .subscribe((/**
               * @return {?}
               */
              function () {
                  _this._stopInterval();
              }));
          }));
          return _this;
      }
      Object.defineProperty(MatTabHeader.prototype, "selectedIndex", {
          /** The index of the active tab. */
          get: /**
           * The index of the active tab.
           * @return {?}
           */
          function () { return this._selectedIndex; },
          set: /**
           * @param {?} value
           * @return {?}
           */
          function (value) {
              value = coerceNumberProperty(value);
              this._selectedIndexChanged = this._selectedIndex != value;
              this._selectedIndex = value;
              if (this._keyManager) {
                  this._keyManager.updateActiveItemIndex(value);
              }
          },
          enumerable: true,
          configurable: true
      });
      /**
       * @return {?}
       */
      MatTabHeader.prototype.ngAfterContentChecked = /**
       * @return {?}
       */
      function () {
          // If the number of tab labels have changed, check if scrolling should be enabled
          if (this._tabLabelCount != this._labelWrappers.length) {
              this.updatePagination();
              this._tabLabelCount = this._labelWrappers.length;
              this._changeDetectorRef.markForCheck();
          }
          // If the selected index has changed, scroll to the label and check if the scrolling controls
          // should be disabled.
          if (this._selectedIndexChanged) {
              this._scrollToLabel(this._selectedIndex);
              this._checkScrollingControls();
              this._alignInkBarToSelectedTab();
              this._selectedIndexChanged = false;
              this._changeDetectorRef.markForCheck();
          }
          // If the scroll distance has been changed (tab selected, focused, scroll controls activated),
          // then translate the header to reflect this.
          if (this._scrollDistanceChanged) {
              this._updateTabScrollPosition();
              this._scrollDistanceChanged = false;
              this._changeDetectorRef.markForCheck();
          }
      };
      /** Handles keyboard events on the header. */
      /**
       * Handles keyboard events on the header.
       * @param {?} event
       * @return {?}
       */
      MatTabHeader.prototype._handleKeydown = /**
       * Handles keyboard events on the header.
       * @param {?} event
       * @return {?}
       */
      function (event) {
          // We don't handle any key bindings with a modifier key.
          if (hasModifierKey(event)) {
              return;
          }
          switch (event.keyCode) {
              case HOME:
                  this._keyManager.setFirstItemActive();
                  event.preventDefault();
                  break;
              case END:
                  this._keyManager.setLastItemActive();
                  event.preventDefault();
                  break;
              case ENTER:
              case SPACE:
                  this.selectFocusedIndex.emit(this.focusIndex);
                  event.preventDefault();
                  break;
              default:
                  this._keyManager.onKeydown(event);
          }
      };
      /**
       * Aligns the ink bar to the selected tab on load.
       */
      /**
       * Aligns the ink bar to the selected tab on load.
       * @return {?}
       */
      MatTabHeader.prototype.ngAfterContentInit = /**
       * Aligns the ink bar to the selected tab on load.
       * @return {?}
       */
      function () {
          var _this = this;
          /** @type {?} */
          var dirChange = this._dir ? this._dir.change : of(null);
          /** @type {?} */
          var resize = this._viewportRuler.change(150);
          /** @type {?} */
          var realign = (/**
           * @return {?}
           */
          function () {
              _this.updatePagination();
              _this._alignInkBarToSelectedTab();
          });
          this._keyManager = new FocusKeyManager(this._labelWrappers)
              .withHorizontalOrientation(this._getLayoutDirection())
              .withWrap();
          this._keyManager.updateActiveItem(0);
          // Defer the first call in order to allow for slower browsers to lay out the elements.
          // This helps in cases where the user lands directly on a page with paginated tabs.
          typeof requestAnimationFrame !== 'undefined' ? requestAnimationFrame(realign) : realign();
          // On dir change or window resize, realign the ink bar and update the orientation of
          // the key manager if the direction has changed.
          merge(dirChange, resize).pipe(takeUntil(this._destroyed)).subscribe((/**
           * @return {?}
           */
          function () {
              realign();
              _this._keyManager.withHorizontalOrientation(_this._getLayoutDirection());
          }));
          // If there is a change in the focus key manager we need to emit the `indexFocused`
          // event in order to provide a public event that notifies about focus changes. Also we realign
          // the tabs container by scrolling the new focused tab into the visible section.
          this._keyManager.change.pipe(takeUntil(this._destroyed)).subscribe((/**
           * @param {?} newFocusIndex
           * @return {?}
           */
          function (newFocusIndex) {
              _this.indexFocused.emit(newFocusIndex);
              _this._setTabFocus(newFocusIndex);
          }));
      };
      /**
       * @return {?}
       */
      MatTabHeader.prototype.ngAfterViewInit = /**
       * @return {?}
       */
      function () {
          var _this = this;
          // We need to handle these events manually, because we want to bind passive event listeners.
          fromEvent(this._previousPaginator.nativeElement, 'touchstart', passiveEventListenerOptions)
              .pipe(takeUntil(this._destroyed))
              .subscribe((/**
           * @return {?}
           */
          function () {
              _this._handlePaginatorPress('before');
          }));
          fromEvent(this._nextPaginator.nativeElement, 'touchstart', passiveEventListenerOptions)
              .pipe(takeUntil(this._destroyed))
              .subscribe((/**
           * @return {?}
           */
          function () {
              _this._handlePaginatorPress('after');
          }));
      };
      /**
       * @return {?}
       */
      MatTabHeader.prototype.ngOnDestroy = /**
       * @return {?}
       */
      function () {
          this._destroyed.next();
          this._destroyed.complete();
          this._stopScrolling.complete();
      };
      /**
       * Callback for when the MutationObserver detects that the content has changed.
       */
      /**
       * Callback for when the MutationObserver detects that the content has changed.
       * @return {?}
       */
      MatTabHeader.prototype._onContentChanges = /**
       * Callback for when the MutationObserver detects that the content has changed.
       * @return {?}
       */
      function () {
          var _this = this;
          /** @type {?} */
          var textContent = this._elementRef.nativeElement.textContent;
          // We need to diff the text content of the header, because the MutationObserver callback
          // will fire even if the text content didn't change which is inefficient and is prone
          // to infinite loops if a poorly constructed expression is passed in (see #14249).
          if (textContent !== this._currentTextContent) {
              this._currentTextContent = textContent;
              // The content observer runs outside the `NgZone` by default, which
              // means that we need to bring the callback back in ourselves.
              this._ngZone.run((/**
               * @return {?}
               */
              function () {
                  _this.updatePagination();
                  _this._alignInkBarToSelectedTab();
                  _this._changeDetectorRef.markForCheck();
              }));
          }
      };
      /**
       * Updates the view whether pagination should be enabled or not.
       *
       * WARNING: Calling this method can be very costly in terms of performance.  It should be called
       * as infrequently as possible from outside of the Tabs component as it causes a reflow of the
       * page.
       */
      /**
       * Updates the view whether pagination should be enabled or not.
       *
       * WARNING: Calling this method can be very costly in terms of performance.  It should be called
       * as infrequently as possible from outside of the Tabs component as it causes a reflow of the
       * page.
       * @return {?}
       */
      MatTabHeader.prototype.updatePagination = /**
       * Updates the view whether pagination should be enabled or not.
       *
       * WARNING: Calling this method can be very costly in terms of performance.  It should be called
       * as infrequently as possible from outside of the Tabs component as it causes a reflow of the
       * page.
       * @return {?}
       */
      function () {
          this._checkPaginationEnabled();
          this._checkScrollingControls();
          this._updateTabScrollPosition();
      };
      Object.defineProperty(MatTabHeader.prototype, "focusIndex", {
          /** Tracks which element has focus; used for keyboard navigation */
          get: /**
           * Tracks which element has focus; used for keyboard navigation
           * @return {?}
           */
          function () {
              return this._keyManager ? (/** @type {?} */ (this._keyManager.activeItemIndex)) : 0;
          },
          /** When the focus index is set, we must manually send focus to the correct label */
          set: /**
           * When the focus index is set, we must manually send focus to the correct label
           * @param {?} value
           * @return {?}
           */
          function (value) {
              if (!this._isValidIndex(value) || this.focusIndex === value || !this._keyManager) {
                  return;
              }
              this._keyManager.setActiveItem(value);
          },
          enumerable: true,
          configurable: true
      });
      /**
       * Determines if an index is valid.  If the tabs are not ready yet, we assume that the user is
       * providing a valid index and return true.
       */
      /**
       * Determines if an index is valid.  If the tabs are not ready yet, we assume that the user is
       * providing a valid index and return true.
       * @param {?} index
       * @return {?}
       */
      MatTabHeader.prototype._isValidIndex = /**
       * Determines if an index is valid.  If the tabs are not ready yet, we assume that the user is
       * providing a valid index and return true.
       * @param {?} index
       * @return {?}
       */
      function (index) {
          if (!this._labelWrappers) {
              return true;
          }
          /** @type {?} */
          var tab = this._labelWrappers ? this._labelWrappers.toArray()[index] : null;
          return !!tab && !tab.disabled;
      };
      /**
       * Sets focus on the HTML element for the label wrapper and scrolls it into the view if
       * scrolling is enabled.
       */
      /**
       * Sets focus on the HTML element for the label wrapper and scrolls it into the view if
       * scrolling is enabled.
       * @param {?} tabIndex
       * @return {?}
       */
      MatTabHeader.prototype._setTabFocus = /**
       * Sets focus on the HTML element for the label wrapper and scrolls it into the view if
       * scrolling is enabled.
       * @param {?} tabIndex
       * @return {?}
       */
      function (tabIndex) {
          if (this._showPaginationControls) {
              this._scrollToLabel(tabIndex);
          }
          if (this._labelWrappers && this._labelWrappers.length) {
              this._labelWrappers.toArray()[tabIndex].focus();
              // Do not let the browser manage scrolling to focus the element, this will be handled
              // by using translation. In LTR, the scroll left should be 0. In RTL, the scroll width
              // should be the full width minus the offset width.
              /** @type {?} */
              var containerEl = this._tabListContainer.nativeElement;
              /** @type {?} */
              var dir = this._getLayoutDirection();
              if (dir == 'ltr') {
                  containerEl.scrollLeft = 0;
              }
              else {
                  containerEl.scrollLeft = containerEl.scrollWidth - containerEl.offsetWidth;
              }
          }
      };
      /** The layout direction of the containing app. */
      /**
       * The layout direction of the containing app.
       * @return {?}
       */
      MatTabHeader.prototype._getLayoutDirection = /**
       * The layout direction of the containing app.
       * @return {?}
       */
      function () {
          return this._dir && this._dir.value === 'rtl' ? 'rtl' : 'ltr';
      };
      /** Performs the CSS transformation on the tab list that will cause the list to scroll. */
      /**
       * Performs the CSS transformation on the tab list that will cause the list to scroll.
       * @return {?}
       */
      MatTabHeader.prototype._updateTabScrollPosition = /**
       * Performs the CSS transformation on the tab list that will cause the list to scroll.
       * @return {?}
       */
      function () {
          /** @type {?} */
          var scrollDistance = this.scrollDistance;
          /** @type {?} */
          var platform = this._platform;
          /** @type {?} */
          var translateX = this._getLayoutDirection() === 'ltr' ? -scrollDistance : scrollDistance;
          // Don't use `translate3d` here because we don't want to create a new layer. A new layer
          // seems to cause flickering and overflow in Internet Explorer. For example, the ink bar
          // and ripples will exceed the boundaries of the visible tab bar.
          // See: https://github.com/angular/components/issues/10276
          // We round the `transform` here, because transforms with sub-pixel precision cause some
          // browsers to blur the content of the element.
          this._tabList.nativeElement.style.transform = "translateX(" + Math.round(translateX) + "px)";
          // Setting the `transform` on IE will change the scroll offset of the parent, causing the
          // position to be thrown off in some cases. We have to reset it ourselves to ensure that
          // it doesn't get thrown off. Note that we scope it only to IE and Edge, because messing
          // with the scroll position throws off Chrome 71+ in RTL mode (see #14689).
          if (platform.TRIDENT || platform.EDGE) {
              this._tabListContainer.nativeElement.scrollLeft = 0;
          }
      };
      Object.defineProperty(MatTabHeader.prototype, "scrollDistance", {
          /** Sets the distance in pixels that the tab header should be transformed in the X-axis. */
          get: /**
           * Sets the distance in pixels that the tab header should be transformed in the X-axis.
           * @return {?}
           */
          function () { return this._scrollDistance; },
          set: /**
           * @param {?} value
           * @return {?}
           */
          function (value) {
              this._scrollTo(value);
          },
          enumerable: true,
          configurable: true
      });
      /**
       * Moves the tab list in the 'before' or 'after' direction (towards the beginning of the list or
       * the end of the list, respectively). The distance to scroll is computed to be a third of the
       * length of the tab list view window.
       *
       * This is an expensive call that forces a layout reflow to compute box and scroll metrics and
       * should be called sparingly.
       */
      /**
       * Moves the tab list in the 'before' or 'after' direction (towards the beginning of the list or
       * the end of the list, respectively). The distance to scroll is computed to be a third of the
       * length of the tab list view window.
       *
       * This is an expensive call that forces a layout reflow to compute box and scroll metrics and
       * should be called sparingly.
       * @param {?} direction
       * @return {?}
       */
      MatTabHeader.prototype._scrollHeader = /**
       * Moves the tab list in the 'before' or 'after' direction (towards the beginning of the list or
       * the end of the list, respectively). The distance to scroll is computed to be a third of the
       * length of the tab list view window.
       *
       * This is an expensive call that forces a layout reflow to compute box and scroll metrics and
       * should be called sparingly.
       * @param {?} direction
       * @return {?}
       */
      function (direction) {
          /** @type {?} */
          var viewLength = this._tabListContainer.nativeElement.offsetWidth;
          // Move the scroll distance one-third the length of the tab list's viewport.
          /** @type {?} */
          var scrollAmount = (direction == 'before' ? -1 : 1) * viewLength / 3;
          return this._scrollTo(this._scrollDistance + scrollAmount);
      };
      /** Handles click events on the pagination arrows. */
      /**
       * Handles click events on the pagination arrows.
       * @param {?} direction
       * @return {?}
       */
      MatTabHeader.prototype._handlePaginatorClick = /**
       * Handles click events on the pagination arrows.
       * @param {?} direction
       * @return {?}
       */
      function (direction) {
          this._stopInterval();
          this._scrollHeader(direction);
      };
      /**
       * Moves the tab list such that the desired tab label (marked by index) is moved into view.
       *
       * This is an expensive call that forces a layout reflow to compute box and scroll metrics and
       * should be called sparingly.
       */
      /**
       * Moves the tab list such that the desired tab label (marked by index) is moved into view.
       *
       * This is an expensive call that forces a layout reflow to compute box and scroll metrics and
       * should be called sparingly.
       * @param {?} labelIndex
       * @return {?}
       */
      MatTabHeader.prototype._scrollToLabel = /**
       * Moves the tab list such that the desired tab label (marked by index) is moved into view.
       *
       * This is an expensive call that forces a layout reflow to compute box and scroll metrics and
       * should be called sparingly.
       * @param {?} labelIndex
       * @return {?}
       */
      function (labelIndex) {
          /** @type {?} */
          var selectedLabel = this._labelWrappers ? this._labelWrappers.toArray()[labelIndex] : null;
          if (!selectedLabel) {
              return;
          }
          // The view length is the visible width of the tab labels.
          /** @type {?} */
          var viewLength = this._tabListContainer.nativeElement.offsetWidth;
          /** @type {?} */
          var labelBeforePos;
          /** @type {?} */
          var labelAfterPos;
          if (this._getLayoutDirection() == 'ltr') {
              labelBeforePos = selectedLabel.getOffsetLeft();
              labelAfterPos = labelBeforePos + selectedLabel.getOffsetWidth();
          }
          else {
              labelAfterPos = this._tabList.nativeElement.offsetWidth - selectedLabel.getOffsetLeft();
              labelBeforePos = labelAfterPos - selectedLabel.getOffsetWidth();
          }
          /** @type {?} */
          var beforeVisiblePos = this.scrollDistance;
          /** @type {?} */
          var afterVisiblePos = this.scrollDistance + viewLength;
          if (labelBeforePos < beforeVisiblePos) {
              // Scroll header to move label to the before direction
              this.scrollDistance -= beforeVisiblePos - labelBeforePos + EXAGGERATED_OVERSCROLL;
          }
          else if (labelAfterPos > afterVisiblePos) {
              // Scroll header to move label to the after direction
              this.scrollDistance += labelAfterPos - afterVisiblePos + EXAGGERATED_OVERSCROLL;
          }
      };
      /**
       * Evaluate whether the pagination controls should be displayed. If the scroll width of the
       * tab list is wider than the size of the header container, then the pagination controls should
       * be shown.
       *
       * This is an expensive call that forces a layout reflow to compute box and scroll metrics and
       * should be called sparingly.
       */
      /**
       * Evaluate whether the pagination controls should be displayed. If the scroll width of the
       * tab list is wider than the size of the header container, then the pagination controls should
       * be shown.
       *
       * This is an expensive call that forces a layout reflow to compute box and scroll metrics and
       * should be called sparingly.
       * @return {?}
       */
      MatTabHeader.prototype._checkPaginationEnabled = /**
       * Evaluate whether the pagination controls should be displayed. If the scroll width of the
       * tab list is wider than the size of the header container, then the pagination controls should
       * be shown.
       *
       * This is an expensive call that forces a layout reflow to compute box and scroll metrics and
       * should be called sparingly.
       * @return {?}
       */
      function () {
          /** @type {?} */
          var isEnabled = this._tabList.nativeElement.scrollWidth > this._elementRef.nativeElement.offsetWidth;
          if (!isEnabled) {
              this.scrollDistance = 0;
          }
          if (isEnabled !== this._showPaginationControls) {
              this._changeDetectorRef.markForCheck();
          }
          this._showPaginationControls = isEnabled;
      };
      /**
       * Evaluate whether the before and after controls should be enabled or disabled.
       * If the header is at the beginning of the list (scroll distance is equal to 0) then disable the
       * before button. If the header is at the end of the list (scroll distance is equal to the
       * maximum distance we can scroll), then disable the after button.
       *
       * This is an expensive call that forces a layout reflow to compute box and scroll metrics and
       * should be called sparingly.
       */
      /**
       * Evaluate whether the before and after controls should be enabled or disabled.
       * If the header is at the beginning of the list (scroll distance is equal to 0) then disable the
       * before button. If the header is at the end of the list (scroll distance is equal to the
       * maximum distance we can scroll), then disable the after button.
       *
       * This is an expensive call that forces a layout reflow to compute box and scroll metrics and
       * should be called sparingly.
       * @return {?}
       */
      MatTabHeader.prototype._checkScrollingControls = /**
       * Evaluate whether the before and after controls should be enabled or disabled.
       * If the header is at the beginning of the list (scroll distance is equal to 0) then disable the
       * before button. If the header is at the end of the list (scroll distance is equal to the
       * maximum distance we can scroll), then disable the after button.
       *
       * This is an expensive call that forces a layout reflow to compute box and scroll metrics and
       * should be called sparingly.
       * @return {?}
       */
      function () {
          // Check if the pagination arrows should be activated.
          this._disableScrollBefore = this.scrollDistance == 0;
          this._disableScrollAfter = this.scrollDistance == this._getMaxScrollDistance();
          this._changeDetectorRef.markForCheck();
      };
      /**
       * Determines what is the maximum length in pixels that can be set for the scroll distance. This
       * is equal to the difference in width between the tab list container and tab header container.
       *
       * This is an expensive call that forces a layout reflow to compute box and scroll metrics and
       * should be called sparingly.
       */
      /**
       * Determines what is the maximum length in pixels that can be set for the scroll distance. This
       * is equal to the difference in width between the tab list container and tab header container.
       *
       * This is an expensive call that forces a layout reflow to compute box and scroll metrics and
       * should be called sparingly.
       * @return {?}
       */
      MatTabHeader.prototype._getMaxScrollDistance = /**
       * Determines what is the maximum length in pixels that can be set for the scroll distance. This
       * is equal to the difference in width between the tab list container and tab header container.
       *
       * This is an expensive call that forces a layout reflow to compute box and scroll metrics and
       * should be called sparingly.
       * @return {?}
       */
      function () {
          /** @type {?} */
          var lengthOfTabList = this._tabList.nativeElement.scrollWidth;
          /** @type {?} */
          var viewLength = this._tabListContainer.nativeElement.offsetWidth;
          return (lengthOfTabList - viewLength) || 0;
      };
      /** Tells the ink-bar to align itself to the current label wrapper */
      /**
       * Tells the ink-bar to align itself to the current label wrapper
       * @return {?}
       */
      MatTabHeader.prototype._alignInkBarToSelectedTab = /**
       * Tells the ink-bar to align itself to the current label wrapper
       * @return {?}
       */
      function () {
          /** @type {?} */
          var selectedLabelWrapper = this._labelWrappers && this._labelWrappers.length ?
              this._labelWrappers.toArray()[this.selectedIndex].elementRef.nativeElement :
              null;
          this._inkBar.alignToElement((/** @type {?} */ (selectedLabelWrapper)));
      };
      /** Stops the currently-running paginator interval.  */
      /**
       * Stops the currently-running paginator interval.
       * @return {?}
       */
      MatTabHeader.prototype._stopInterval = /**
       * Stops the currently-running paginator interval.
       * @return {?}
       */
      function () {
          this._stopScrolling.next();
      };
      /**
       * Handles the user pressing down on one of the paginators.
       * Starts scrolling the header after a certain amount of time.
       * @param direction In which direction the paginator should be scrolled.
       */
      /**
       * Handles the user pressing down on one of the paginators.
       * Starts scrolling the header after a certain amount of time.
       * @param {?} direction In which direction the paginator should be scrolled.
       * @return {?}
       */
      MatTabHeader.prototype._handlePaginatorPress = /**
       * Handles the user pressing down on one of the paginators.
       * Starts scrolling the header after a certain amount of time.
       * @param {?} direction In which direction the paginator should be scrolled.
       * @return {?}
       */
      function (direction) {
          var _this = this;
          // Avoid overlapping timers.
          this._stopInterval();
          // Start a timer after the delay and keep firing based on the interval.
          timer(HEADER_SCROLL_DELAY, HEADER_SCROLL_INTERVAL)
              // Keep the timer going until something tells it to stop or the component is destroyed.
              .pipe(takeUntil(merge(this._stopScrolling, this._destroyed)))
              .subscribe((/**
           * @return {?}
           */
          function () {
              var _a = _this._scrollHeader(direction), maxScrollDistance = _a.maxScrollDistance, distance = _a.distance;
              // Stop the timer if we've reached the start or the end.
              if (distance === 0 || distance >= maxScrollDistance) {
                  _this._stopInterval();
              }
          }));
      };
      /**
       * Scrolls the header to a given position.
       * @param position Position to which to scroll.
       * @returns Information on the current scroll distance and the maximum.
       */
      /**
       * Scrolls the header to a given position.
       * @private
       * @param {?} position Position to which to scroll.
       * @return {?} Information on the current scroll distance and the maximum.
       */
      MatTabHeader.prototype._scrollTo = /**
       * Scrolls the header to a given position.
       * @private
       * @param {?} position Position to which to scroll.
       * @return {?} Information on the current scroll distance and the maximum.
       */
      function (position) {
          /** @type {?} */
          var maxScrollDistance = this._getMaxScrollDistance();
          this._scrollDistance = Math.max(0, Math.min(maxScrollDistance, position));
          // Mark that the scroll distance has changed so that after the view is checked, the CSS
          // transformation can move the header.
          this._scrollDistanceChanged = true;
          this._checkScrollingControls();
          return { maxScrollDistance: maxScrollDistance, distance: this._scrollDistance };
      };
      MatTabHeader.decorators = [
          { type: Component, args: [{selector: 'mat-tab-header',
                      template: "<div class=\"mat-tab-header-pagination mat-tab-header-pagination-before mat-elevation-z4\" #previousPaginator aria-hidden=\"true\" mat-ripple [matRippleDisabled]=\"_disableScrollBefore || disableRipple\" [class.mat-tab-header-pagination-disabled]=\"_disableScrollBefore\" (click)=\"_handlePaginatorClick('before')\" (mousedown)=\"_handlePaginatorPress('before')\" (touchend)=\"_stopInterval()\"><div class=\"mat-tab-header-pagination-chevron\"></div></div><div class=\"mat-tab-label-container\" #tabListContainer (keydown)=\"_handleKeydown($event)\"><div class=\"mat-tab-list\" [class._mat-animation-noopable]=\"_animationMode === 'NoopAnimations'\" #tabList role=\"tablist\" (cdkObserveContent)=\"_onContentChanges()\"><div class=\"mat-tab-labels\"><ng-content></ng-content></div><mat-ink-bar></mat-ink-bar></div></div><div class=\"mat-tab-header-pagination mat-tab-header-pagination-after mat-elevation-z4\" #nextPaginator aria-hidden=\"true\" mat-ripple [matRippleDisabled]=\"_disableScrollAfter || disableRipple\" [class.mat-tab-header-pagination-disabled]=\"_disableScrollAfter\" (mousedown)=\"_handlePaginatorPress('after')\" (click)=\"_handlePaginatorClick('after')\" (touchend)=\"_stopInterval()\"><div class=\"mat-tab-header-pagination-chevron\"></div></div>",
                      styles: [".mat-tab-header{display:flex;overflow:hidden;position:relative;flex-shrink:0}.mat-tab-label{height:48px;padding:0 24px;cursor:pointer;box-sizing:border-box;opacity:.6;min-width:160px;text-align:center;display:inline-flex;justify-content:center;align-items:center;white-space:nowrap;position:relative}.mat-tab-label:focus{outline:0}.mat-tab-label:focus:not(.mat-tab-disabled){opacity:1}@media (-ms-high-contrast:active){.mat-tab-label:focus{outline:dotted 2px}}.mat-tab-label.mat-tab-disabled{cursor:default}@media (-ms-high-contrast:active){.mat-tab-label.mat-tab-disabled{opacity:.5}}.mat-tab-label .mat-tab-label-content{display:inline-flex;justify-content:center;align-items:center;white-space:nowrap}@media (-ms-high-contrast:active){.mat-tab-label{opacity:1}}@media (max-width:599px){.mat-tab-label{min-width:72px}}.mat-ink-bar{position:absolute;bottom:0;height:2px;transition:.5s cubic-bezier(.35,0,.25,1)}._mat-animation-noopable.mat-ink-bar{transition:none;animation:none}.mat-tab-group-inverted-header .mat-ink-bar{bottom:auto;top:0}@media (-ms-high-contrast:active){.mat-ink-bar{outline:solid 2px;height:0}}.mat-tab-header-pagination{-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;position:relative;display:none;justify-content:center;align-items:center;min-width:32px;cursor:pointer;z-index:2;-webkit-tap-highlight-color:transparent;touch-action:none}.mat-tab-header-pagination-controls-enabled .mat-tab-header-pagination{display:flex}.mat-tab-header-pagination-before,.mat-tab-header-rtl .mat-tab-header-pagination-after{padding-left:4px}.mat-tab-header-pagination-before .mat-tab-header-pagination-chevron,.mat-tab-header-rtl .mat-tab-header-pagination-after .mat-tab-header-pagination-chevron{transform:rotate(-135deg)}.mat-tab-header-pagination-after,.mat-tab-header-rtl .mat-tab-header-pagination-before{padding-right:4px}.mat-tab-header-pagination-after .mat-tab-header-pagination-chevron,.mat-tab-header-rtl .mat-tab-header-pagination-before .mat-tab-header-pagination-chevron{transform:rotate(45deg)}.mat-tab-header-pagination-chevron{border-style:solid;border-width:2px 2px 0 0;content:'';height:8px;width:8px}.mat-tab-header-pagination-disabled{box-shadow:none;cursor:default}.mat-tab-label-container{display:flex;flex-grow:1;overflow:hidden;z-index:1}.mat-tab-list{flex-grow:1;position:relative;transition:transform .5s cubic-bezier(.35,0,.25,1)}._mat-animation-noopable.mat-tab-list{transition:none;animation:none}.mat-tab-labels{display:flex}[mat-align-tabs=center] .mat-tab-labels{justify-content:center}[mat-align-tabs=end] .mat-tab-labels{justify-content:flex-end}"],
                      inputs: ['disableRipple'],
                      encapsulation: ViewEncapsulation.None,
                      changeDetection: ChangeDetectionStrategy.OnPush,
                      host: {
                          'class': 'mat-tab-header',
                          '[class.mat-tab-header-pagination-controls-enabled]': '_showPaginationControls',
                          '[class.mat-tab-header-rtl]': "_getLayoutDirection() == 'rtl'",
                      },
                  },] },
      ];
      /** @nocollapse */
      MatTabHeader.ctorParameters = function () { return [
          { type: ElementRef },
          { type: ChangeDetectorRef },
          { type: ViewportRuler },
          { type: Directionality, decorators: [{ type: Optional }] },
          { type: NgZone },
          { type: Platform },
          { type: String, decorators: [{ type: Optional }, { type: Inject, args: [ANIMATION_MODULE_TYPE,] }] }
      ]; };
      MatTabHeader.propDecorators = {
          _labelWrappers: [{ type: ContentChildren, args: [MatTabLabelWrapper,] }],
          _inkBar: [{ type: ViewChild, args: [MatInkBar, { static: true },] }],
          _tabListContainer: [{ type: ViewChild, args: ['tabListContainer', { static: true },] }],
          _tabList: [{ type: ViewChild, args: ['tabList', { static: true },] }],
          _nextPaginator: [{ type: ViewChild, args: ['nextPaginator', { static: false },] }],
          _previousPaginator: [{ type: ViewChild, args: ['previousPaginator', { static: false },] }],
          selectedIndex: [{ type: Input }],
          selectFocusedIndex: [{ type: Output }],
          indexFocused: [{ type: Output }]
      };
      return MatTabHeader;
  }(_MatTabHeaderMixinBase));
  
  /**
   * @fileoverview added by tsickle
   * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
   */
  /**
   * Used to generate unique ID's for each tab component
   * @type {?}
   */
  var nextId = 0;
  /**
   * A simple change event emitted on focus or selection changes.
   */
  var  /**
   * A simple change event emitted on focus or selection changes.
   */
  MatTabChangeEvent = /** @class */ (function () {
      function MatTabChangeEvent() {
      }
      return MatTabChangeEvent;
  }());
  /**
   * Injection token that can be used to provide the default options the tabs module.
   * @type {?}
   */
  var MAT_TABS_CONFIG = new InjectionToken('MAT_TABS_CONFIG');
  // Boilerplate for applying mixins to MatTabGroup.
  /**
   * \@docs-private
   */
  var 
  // Boilerplate for applying mixins to MatTabGroup.
  /**
   * \@docs-private
   */
  MatTabGroupBase = /** @class */ (function () {
      function MatTabGroupBase(_elementRef) {
          this._elementRef = _elementRef;
      }
      return MatTabGroupBase;
  }());
  /** @type {?} */
  var _MatTabGroupMixinBase = mixinColor(mixinDisableRipple(MatTabGroupBase), 'primary');
  /**
   * Material design tab-group component.  Supports basic tab pairs (label + content) and includes
   * animated ink-bar, keyboard navigation, and screen reader.
   * See: https://material.io/design/components/tabs.html
   */
  var MatTabGroup = /** @class */ (function (_super) {
      __extends(MatTabGroup, _super);
      function MatTabGroup(elementRef, _changeDetectorRef, defaultConfig, _animationMode) {
          var _this = _super.call(this, elementRef) || this;
          _this._changeDetectorRef = _changeDetectorRef;
          _this._animationMode = _animationMode;
          /**
           * The tab index that should be selected after the content has been checked.
           */
          _this._indexToSelect = 0;
          /**
           * Snapshot of the height of the tab body wrapper before another tab is activated.
           */
          _this._tabBodyWrapperHeight = 0;
          /**
           * Subscription to tabs being added/removed.
           */
          _this._tabsSubscription = Subscription.EMPTY;
          /**
           * Subscription to changes in the tab labels.
           */
          _this._tabLabelSubscription = Subscription.EMPTY;
          _this._dynamicHeight = false;
          _this._selectedIndex = null;
          /**
           * Position of the tab header.
           */
          _this.headerPosition = 'above';
          /**
           * Output to enable support for two-way binding on `[(selectedIndex)]`
           */
          _this.selectedIndexChange = new EventEmitter();
          /**
           * Event emitted when focus has changed within a tab group.
           */
          _this.focusChange = new EventEmitter();
          /**
           * Event emitted when the body animation has completed
           */
          _this.animationDone = new EventEmitter();
          /**
           * Event emitted when the tab selection has changed.
           */
          _this.selectedTabChange = new EventEmitter(true);
          _this._groupId = nextId++;
          _this.animationDuration = defaultConfig && defaultConfig.animationDuration ?
              defaultConfig.animationDuration : '500ms';
          return _this;
      }
      Object.defineProperty(MatTabGroup.prototype, "dynamicHeight", {
          /** Whether the tab group should grow to the size of the active tab. */
          get: /**
           * Whether the tab group should grow to the size of the active tab.
           * @return {?}
           */
          function () { return this._dynamicHeight; },
          set: /**
           * @param {?} value
           * @return {?}
           */
          function (value) { this._dynamicHeight = coerceBooleanProperty(value); },
          enumerable: true,
          configurable: true
      });
      Object.defineProperty(MatTabGroup.prototype, "selectedIndex", {
          /** The index of the active tab. */
          get: /**
           * The index of the active tab.
           * @return {?}
           */
          function () { return this._selectedIndex; },
          set: /**
           * @param {?} value
           * @return {?}
           */
          function (value) {
              this._indexToSelect = coerceNumberProperty(value, null);
          },
          enumerable: true,
          configurable: true
      });
      Object.defineProperty(MatTabGroup.prototype, "animationDuration", {
          /** Duration for the tab animation. Will be normalized to milliseconds if no units are set. */
          get: /**
           * Duration for the tab animation. Will be normalized to milliseconds if no units are set.
           * @return {?}
           */
          function () { return this._animationDuration; },
          set: /**
           * @param {?} value
           * @return {?}
           */
          function (value) {
              this._animationDuration = /^\d+$/.test(value) ? value + 'ms' : value;
          },
          enumerable: true,
          configurable: true
      });
      Object.defineProperty(MatTabGroup.prototype, "backgroundColor", {
          /** Background color of the tab group. */
          get: /**
           * Background color of the tab group.
           * @return {?}
           */
          function () { return this._backgroundColor; },
          set: /**
           * @param {?} value
           * @return {?}
           */
          function (value) {
              /** @type {?} */
              var nativeElement = this._elementRef.nativeElement;
              nativeElement.classList.remove("mat-background-" + this.backgroundColor);
              if (value) {
                  nativeElement.classList.add("mat-background-" + value);
              }
              this._backgroundColor = value;
          },
          enumerable: true,
          configurable: true
      });
      /**
       * After the content is checked, this component knows what tabs have been defined
       * and what the selected index should be. This is where we can know exactly what position
       * each tab should be in according to the new selected index, and additionally we know how
       * a new selected tab should transition in (from the left or right).
       */
      /**
       * After the content is checked, this component knows what tabs have been defined
       * and what the selected index should be. This is where we can know exactly what position
       * each tab should be in according to the new selected index, and additionally we know how
       * a new selected tab should transition in (from the left or right).
       * @return {?}
       */
      MatTabGroup.prototype.ngAfterContentChecked = /**
       * After the content is checked, this component knows what tabs have been defined
       * and what the selected index should be. This is where we can know exactly what position
       * each tab should be in according to the new selected index, and additionally we know how
       * a new selected tab should transition in (from the left or right).
       * @return {?}
       */
      function () {
          var _this = this;
          // Don't clamp the `indexToSelect` immediately in the setter because it can happen that
          // the amount of tabs changes before the actual change detection runs.
          /** @type {?} */
          var indexToSelect = this._indexToSelect = this._clampTabIndex(this._indexToSelect);
          // If there is a change in selected index, emit a change event. Should not trigger if
          // the selected index has not yet been initialized.
          if (this._selectedIndex != indexToSelect) {
              /** @type {?} */
              var isFirstRun_1 = this._selectedIndex == null;
              if (!isFirstRun_1) {
                  this.selectedTabChange.emit(this._createChangeEvent(indexToSelect));
              }
              // Changing these values after change detection has run
              // since the checked content may contain references to them.
              Promise.resolve().then((/**
               * @return {?}
               */
              function () {
                  _this._tabs.forEach((/**
                   * @param {?} tab
                   * @param {?} index
                   * @return {?}
                   */
                  function (tab, index) { return tab.isActive = index === indexToSelect; }));
                  if (!isFirstRun_1) {
                      _this.selectedIndexChange.emit(indexToSelect);
                  }
              }));
          }
          // Setup the position for each tab and optionally setup an origin on the next selected tab.
          this._tabs.forEach((/**
           * @param {?} tab
           * @param {?} index
           * @return {?}
           */
          function (tab, index) {
              tab.position = index - indexToSelect;
              // If there is already a selected tab, then set up an origin for the next selected tab
              // if it doesn't have one already.
              if (_this._selectedIndex != null && tab.position == 0 && !tab.origin) {
                  tab.origin = indexToSelect - _this._selectedIndex;
              }
          }));
          if (this._selectedIndex !== indexToSelect) {
              this._selectedIndex = indexToSelect;
              this._changeDetectorRef.markForCheck();
          }
      };
      /**
       * @return {?}
       */
      MatTabGroup.prototype.ngAfterContentInit = /**
       * @return {?}
       */
      function () {
          var _this = this;
          this._subscribeToTabLabels();
          // Subscribe to changes in the amount of tabs, in order to be
          // able to re-render the content as new tabs are added or removed.
          this._tabsSubscription = this._tabs.changes.subscribe((/**
           * @return {?}
           */
          function () {
              /** @type {?} */
              var indexToSelect = _this._clampTabIndex(_this._indexToSelect);
              // Maintain the previously-selected tab if a new tab is added or removed and there is no
              // explicit change that selects a different tab.
              if (indexToSelect === _this._selectedIndex) {
                  /** @type {?} */
                  var tabs = _this._tabs.toArray();
                  for (var i = 0; i < tabs.length; i++) {
                      if (tabs[i].isActive) {
                          // Assign both to the `_indexToSelect` and `_selectedIndex` so we don't fire a changed
                          // event, otherwise the consumer may end up in an infinite loop in some edge cases like
                          // adding a tab within the `selectedIndexChange` event.
                          _this._indexToSelect = _this._selectedIndex = i;
                          break;
                      }
                  }
              }
              _this._subscribeToTabLabels();
              _this._changeDetectorRef.markForCheck();
          }));
      };
      /**
       * @return {?}
       */
      MatTabGroup.prototype.ngOnDestroy = /**
       * @return {?}
       */
      function () {
          this._tabsSubscription.unsubscribe();
          this._tabLabelSubscription.unsubscribe();
      };
      /** Re-aligns the ink bar to the selected tab element. */
      /**
       * Re-aligns the ink bar to the selected tab element.
       * @return {?}
       */
      MatTabGroup.prototype.realignInkBar = /**
       * Re-aligns the ink bar to the selected tab element.
       * @return {?}
       */
      function () {
          if (this._tabHeader) {
              this._tabHeader._alignInkBarToSelectedTab();
          }
      };
      /**
       * @param {?} index
       * @return {?}
       */
      MatTabGroup.prototype._focusChanged = /**
       * @param {?} index
       * @return {?}
       */
      function (index) {
          this.focusChange.emit(this._createChangeEvent(index));
      };
      /**
       * @private
       * @param {?} index
       * @return {?}
       */
      MatTabGroup.prototype._createChangeEvent = /**
       * @private
       * @param {?} index
       * @return {?}
       */
      function (index) {
          /** @type {?} */
          var event = new MatTabChangeEvent;
          event.index = index;
          if (this._tabs && this._tabs.length) {
              event.tab = this._tabs.toArray()[index];
          }
          return event;
      };
      /**
       * Subscribes to changes in the tab labels. This is needed, because the @Input for the label is
       * on the MatTab component, whereas the data binding is inside the MatTabGroup. In order for the
       * binding to be updated, we need to subscribe to changes in it and trigger change detection
       * manually.
       */
      /**
       * Subscribes to changes in the tab labels. This is needed, because the \@Input for the label is
       * on the MatTab component, whereas the data binding is inside the MatTabGroup. In order for the
       * binding to be updated, we need to subscribe to changes in it and trigger change detection
       * manually.
       * @private
       * @return {?}
       */
      MatTabGroup.prototype._subscribeToTabLabels = /**
       * Subscribes to changes in the tab labels. This is needed, because the \@Input for the label is
       * on the MatTab component, whereas the data binding is inside the MatTabGroup. In order for the
       * binding to be updated, we need to subscribe to changes in it and trigger change detection
       * manually.
       * @private
       * @return {?}
       */
      function () {
          var _this = this;
          if (this._tabLabelSubscription) {
              this._tabLabelSubscription.unsubscribe();
          }
          this._tabLabelSubscription = merge.apply(void 0, this._tabs.map((/**
           * @param {?} tab
           * @return {?}
           */
          function (tab) { return tab._stateChanges; }))).subscribe((/**
           * @return {?}
           */
          function () { return _this._changeDetectorRef.markForCheck(); }));
      };
      /** Clamps the given index to the bounds of 0 and the tabs length. */
      /**
       * Clamps the given index to the bounds of 0 and the tabs length.
       * @private
       * @param {?} index
       * @return {?}
       */
      MatTabGroup.prototype._clampTabIndex = /**
       * Clamps the given index to the bounds of 0 and the tabs length.
       * @private
       * @param {?} index
       * @return {?}
       */
      function (index) {
          // Note the `|| 0`, which ensures that values like NaN can't get through
          // and which would otherwise throw the component into an infinite loop
          // (since Math.max(NaN, 0) === NaN).
          return Math.min(this._tabs.length - 1, Math.max(index || 0, 0));
      };
      /** Returns a unique id for each tab label element */
      /**
       * Returns a unique id for each tab label element
       * @param {?} i
       * @return {?}
       */
      MatTabGroup.prototype._getTabLabelId = /**
       * Returns a unique id for each tab label element
       * @param {?} i
       * @return {?}
       */
      function (i) {
          return "mat-tab-label-" + this._groupId + "-" + i;
      };
      /** Returns a unique id for each tab content element */
      /**
       * Returns a unique id for each tab content element
       * @param {?} i
       * @return {?}
       */
      MatTabGroup.prototype._getTabContentId = /**
       * Returns a unique id for each tab content element
       * @param {?} i
       * @return {?}
       */
      function (i) {
          return "mat-tab-content-" + this._groupId + "-" + i;
      };
      /**
       * Sets the height of the body wrapper to the height of the activating tab if dynamic
       * height property is true.
       */
      /**
       * Sets the height of the body wrapper to the height of the activating tab if dynamic
       * height property is true.
       * @param {?} tabHeight
       * @return {?}
       */
      MatTabGroup.prototype._setTabBodyWrapperHeight = /**
       * Sets the height of the body wrapper to the height of the activating tab if dynamic
       * height property is true.
       * @param {?} tabHeight
       * @return {?}
       */
      function (tabHeight) {
          if (!this._dynamicHeight || !this._tabBodyWrapperHeight) {
              return;
          }
          /** @type {?} */
          var wrapper = this._tabBodyWrapper.nativeElement;
          wrapper.style.height = this._tabBodyWrapperHeight + 'px';
          // This conditional forces the browser to paint the height so that
          // the animation to the new height can have an origin.
          if (this._tabBodyWrapper.nativeElement.offsetHeight) {
              wrapper.style.height = tabHeight + 'px';
          }
      };
      /** Removes the height of the tab body wrapper. */
      /**
       * Removes the height of the tab body wrapper.
       * @return {?}
       */
      MatTabGroup.prototype._removeTabBodyWrapperHeight = /**
       * Removes the height of the tab body wrapper.
       * @return {?}
       */
      function () {
          /** @type {?} */
          var wrapper = this._tabBodyWrapper.nativeElement;
          this._tabBodyWrapperHeight = wrapper.clientHeight;
          wrapper.style.height = '';
          this.animationDone.emit();
      };
      /** Handle click events, setting new selected index if appropriate. */
      /**
       * Handle click events, setting new selected index if appropriate.
       * @param {?} tab
       * @param {?} tabHeader
       * @param {?} index
       * @return {?}
       */
      MatTabGroup.prototype._handleClick = /**
       * Handle click events, setting new selected index if appropriate.
       * @param {?} tab
       * @param {?} tabHeader
       * @param {?} index
       * @return {?}
       */
      function (tab, tabHeader, index) {
          if (!tab.disabled) {
              this.selectedIndex = tabHeader.focusIndex = index;
          }
      };
      /** Retrieves the tabindex for the tab. */
      /**
       * Retrieves the tabindex for the tab.
       * @param {?} tab
       * @param {?} idx
       * @return {?}
       */
      MatTabGroup.prototype._getTabIndex = /**
       * Retrieves the tabindex for the tab.
       * @param {?} tab
       * @param {?} idx
       * @return {?}
       */
      function (tab, idx) {
          if (tab.disabled) {
              return null;
          }
          return this.selectedIndex === idx ? 0 : -1;
      };
      MatTabGroup.decorators = [
          { type: Component, args: [{selector: 'mat-tab-group',
                      exportAs: 'matTabGroup',
                      template: "<mat-tab-header #tabHeader [selectedIndex]=\"selectedIndex\" [disableRipple]=\"disableRipple\" (indexFocused)=\"_focusChanged($event)\" (selectFocusedIndex)=\"selectedIndex = $event\"><div class=\"mat-tab-label\" role=\"tab\" matTabLabelWrapper mat-ripple cdkMonitorElementFocus *ngFor=\"let tab of _tabs; let i = index\" [id]=\"_getTabLabelId(i)\" [attr.tabIndex]=\"_getTabIndex(tab, i)\" [attr.aria-posinset]=\"i + 1\" [attr.aria-setsize]=\"_tabs.length\" [attr.aria-controls]=\"_getTabContentId(i)\" [attr.aria-selected]=\"selectedIndex == i\" [attr.aria-label]=\"tab.ariaLabel || null\" [attr.aria-labelledby]=\"(!tab.ariaLabel && tab.ariaLabelledby) ? tab.ariaLabelledby : null\" [class.mat-tab-label-active]=\"selectedIndex == i\" [disabled]=\"tab.disabled\" [matRippleDisabled]=\"tab.disabled || disableRipple\" (click)=\"_handleClick(tab, tabHeader, i)\"><div class=\"mat-tab-label-content\"><ng-template [ngIf]=\"tab.templateLabel\"><ng-template [cdkPortalOutlet]=\"tab.templateLabel\"></ng-template></ng-template><ng-template [ngIf]=\"!tab.templateLabel\">{{tab.textLabel}}</ng-template></div></div></mat-tab-header><div class=\"mat-tab-body-wrapper\" [class._mat-animation-noopable]=\"_animationMode === 'NoopAnimations'\" #tabBodyWrapper><mat-tab-body role=\"tabpanel\" *ngFor=\"let tab of _tabs; let i = index\" [id]=\"_getTabContentId(i)\" [attr.aria-labelledby]=\"_getTabLabelId(i)\" [class.mat-tab-body-active]=\"selectedIndex == i\" [content]=\"tab.content\" [position]=\"tab.position\" [origin]=\"tab.origin\" [animationDuration]=\"animationDuration\" (_onCentered)=\"_removeTabBodyWrapperHeight()\" (_onCentering)=\"_setTabBodyWrapperHeight($event)\"></mat-tab-body></div>",
                      styles: [".mat-tab-group{display:flex;flex-direction:column}.mat-tab-group.mat-tab-group-inverted-header{flex-direction:column-reverse}.mat-tab-label{height:48px;padding:0 24px;cursor:pointer;box-sizing:border-box;opacity:.6;min-width:160px;text-align:center;display:inline-flex;justify-content:center;align-items:center;white-space:nowrap;position:relative}.mat-tab-label:focus{outline:0}.mat-tab-label:focus:not(.mat-tab-disabled){opacity:1}@media (-ms-high-contrast:active){.mat-tab-label:focus{outline:dotted 2px}}.mat-tab-label.mat-tab-disabled{cursor:default}@media (-ms-high-contrast:active){.mat-tab-label.mat-tab-disabled{opacity:.5}}.mat-tab-label .mat-tab-label-content{display:inline-flex;justify-content:center;align-items:center;white-space:nowrap}@media (-ms-high-contrast:active){.mat-tab-label{opacity:1}}@media (max-width:599px){.mat-tab-label{padding:0 12px}}@media (max-width:959px){.mat-tab-label{padding:0 12px}}.mat-tab-group[mat-stretch-tabs]>.mat-tab-header .mat-tab-label{flex-basis:0;flex-grow:1}.mat-tab-body-wrapper{position:relative;overflow:hidden;display:flex;transition:height .5s cubic-bezier(.35,0,.25,1)}._mat-animation-noopable.mat-tab-body-wrapper{transition:none;animation:none}.mat-tab-body{top:0;left:0;right:0;bottom:0;position:absolute;display:block;overflow:hidden;flex-basis:100%}.mat-tab-body.mat-tab-body-active{position:relative;overflow-x:hidden;overflow-y:auto;z-index:1;flex-grow:1}.mat-tab-group.mat-tab-group-dynamic-height .mat-tab-body.mat-tab-body-active{overflow-y:hidden}"],
                      encapsulation: ViewEncapsulation.None,
                      changeDetection: ChangeDetectionStrategy.OnPush,
                      inputs: ['color', 'disableRipple'],
                      host: {
                          'class': 'mat-tab-group',
                          '[class.mat-tab-group-dynamic-height]': 'dynamicHeight',
                          '[class.mat-tab-group-inverted-header]': 'headerPosition === "below"',
                      },
                  },] },
      ];
      /** @nocollapse */
      MatTabGroup.ctorParameters = function () { return [
          { type: ElementRef },
          { type: ChangeDetectorRef },
          { type: undefined, decorators: [{ type: Inject, args: [MAT_TABS_CONFIG,] }, { type: Optional }] },
          { type: String, decorators: [{ type: Optional }, { type: Inject, args: [ANIMATION_MODULE_TYPE,] }] }
      ]; };
      MatTabGroup.propDecorators = {
          _tabs: [{ type: ContentChildren, args: [MatTab,] }],
          _tabBodyWrapper: [{ type: ViewChild, args: ['tabBodyWrapper', { static: false },] }],
          _tabHeader: [{ type: ViewChild, args: ['tabHeader', { static: false },] }],
          dynamicHeight: [{ type: Input }],
          selectedIndex: [{ type: Input }],
          headerPosition: [{ type: Input }],
          animationDuration: [{ type: Input }],
          backgroundColor: [{ type: Input }],
          selectedIndexChange: [{ type: Output }],
          focusChange: [{ type: Output }],
          animationDone: [{ type: Output }],
          selectedTabChange: [{ type: Output }]
      };
      return MatTabGroup;
  }(_MatTabGroupMixinBase));
  
  /**
   * @fileoverview added by tsickle
   * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
   */
  // Boilerplate for applying mixins to MatTabNav.
  /**
   * \@docs-private
   */
  var 
  // Boilerplate for applying mixins to MatTabNav.
  /**
   * \@docs-private
   */
  MatTabNavBase = /** @class */ (function () {
      function MatTabNavBase(_elementRef) {
          this._elementRef = _elementRef;
      }
      return MatTabNavBase;
  }());
  /** @type {?} */
  var _MatTabNavMixinBase = mixinDisableRipple(mixinColor(MatTabNavBase, 'primary'));
  /**
   * Navigation component matching the styles of the tab group header.
   * Provides anchored navigation with animated ink bar.
   */
  var MatTabNav = /** @class */ (function (_super) {
      __extends(MatTabNav, _super);
      function MatTabNav(elementRef, _dir, _ngZone, _changeDetectorRef, _viewportRuler) {
          var _this = _super.call(this, elementRef) || this;
          _this._dir = _dir;
          _this._ngZone = _ngZone;
          _this._changeDetectorRef = _changeDetectorRef;
          _this._viewportRuler = _viewportRuler;
          /**
           * Subject that emits when the component has been destroyed.
           */
          _this._onDestroy = new Subject();
          return _this;
      }
      Object.defineProperty(MatTabNav.prototype, "backgroundColor", {
          /** Background color of the tab nav. */
          get: /**
           * Background color of the tab nav.
           * @return {?}
           */
          function () { return this._backgroundColor; },
          set: /**
           * @param {?} value
           * @return {?}
           */
          function (value) {
              /** @type {?} */
              var nativeElement = this._elementRef.nativeElement;
              nativeElement.classList.remove("mat-background-" + this.backgroundColor);
              if (value) {
                  nativeElement.classList.add("mat-background-" + value);
              }
              this._backgroundColor = value;
          },
          enumerable: true,
          configurable: true
      });
      /**
       * Notifies the component that the active link has been changed.
       * @breaking-change 8.0.0 `element` parameter to be removed.
       */
      /**
       * Notifies the component that the active link has been changed.
       * \@breaking-change 8.0.0 `element` parameter to be removed.
       * @param {?} element
       * @return {?}
       */
      MatTabNav.prototype.updateActiveLink = /**
       * Notifies the component that the active link has been changed.
       * \@breaking-change 8.0.0 `element` parameter to be removed.
       * @param {?} element
       * @return {?}
       */
      function (element) {
          // Note: keeping the `element` for backwards-compat, but isn't being used for anything.
          // @breaking-change 8.0.0
          this._activeLinkChanged = !!element;
          this._changeDetectorRef.markForCheck();
      };
      /**
       * @return {?}
       */
      MatTabNav.prototype.ngAfterContentInit = /**
       * @return {?}
       */
      function () {
          var _this = this;
          this._ngZone.runOutsideAngular((/**
           * @return {?}
           */
          function () {
              /** @type {?} */
              var dirChange = _this._dir ? _this._dir.change : of(null);
              return merge(dirChange, _this._viewportRuler.change(10))
                  .pipe(takeUntil(_this._onDestroy))
                  .subscribe((/**
               * @return {?}
               */
              function () { return _this._alignInkBar(); }));
          }));
      };
      /** Checks if the active link has been changed and, if so, will update the ink bar. */
      /**
       * Checks if the active link has been changed and, if so, will update the ink bar.
       * @return {?}
       */
      MatTabNav.prototype.ngAfterContentChecked = /**
       * Checks if the active link has been changed and, if so, will update the ink bar.
       * @return {?}
       */
      function () {
          if (this._activeLinkChanged) {
              /** @type {?} */
              var activeTab = this._tabLinks.find((/**
               * @param {?} tab
               * @return {?}
               */
              function (tab) { return tab.active; }));
              this._activeLinkElement = activeTab ? activeTab._elementRef : null;
              this._alignInkBar();
              this._activeLinkChanged = false;
          }
      };
      /**
       * @return {?}
       */
      MatTabNav.prototype.ngOnDestroy = /**
       * @return {?}
       */
      function () {
          this._onDestroy.next();
          this._onDestroy.complete();
      };
      /** Aligns the ink bar to the active link. */
      /**
       * Aligns the ink bar to the active link.
       * @return {?}
       */
      MatTabNav.prototype._alignInkBar = /**
       * Aligns the ink bar to the active link.
       * @return {?}
       */
      function () {
          if (this._activeLinkElement) {
              this._inkBar.show();
              this._inkBar.alignToElement(this._activeLinkElement.nativeElement);
          }
          else {
              this._inkBar.hide();
          }
      };
      MatTabNav.decorators = [
          { type: Component, args: [{selector: '[mat-tab-nav-bar]',
                      exportAs: 'matTabNavBar, matTabNav',
                      inputs: ['color', 'disableRipple'],
                      template: "<div class=\"mat-tab-links\" (cdkObserveContent)=\"_alignInkBar()\"><ng-content></ng-content><mat-ink-bar></mat-ink-bar></div>",
                      styles: [".mat-tab-nav-bar{overflow:hidden;position:relative;flex-shrink:0}.mat-tab-links{position:relative;display:flex}[mat-align-tabs=center] .mat-tab-links{justify-content:center}[mat-align-tabs=end] .mat-tab-links{justify-content:flex-end}.mat-tab-link{height:48px;padding:0 24px;cursor:pointer;box-sizing:border-box;opacity:.6;min-width:160px;text-align:center;display:inline-flex;justify-content:center;align-items:center;white-space:nowrap;vertical-align:top;text-decoration:none;position:relative;overflow:hidden;-webkit-tap-highlight-color:transparent}.mat-tab-link:focus{outline:0}.mat-tab-link:focus:not(.mat-tab-disabled){opacity:1}@media (-ms-high-contrast:active){.mat-tab-link:focus{outline:dotted 2px}}.mat-tab-link.mat-tab-disabled{cursor:default}@media (-ms-high-contrast:active){.mat-tab-link.mat-tab-disabled{opacity:.5}}.mat-tab-link .mat-tab-label-content{display:inline-flex;justify-content:center;align-items:center;white-space:nowrap}@media (-ms-high-contrast:active){.mat-tab-link{opacity:1}}[mat-stretch-tabs] .mat-tab-link{flex-basis:0;flex-grow:1}.mat-tab-link.mat-tab-disabled{pointer-events:none}@media (max-width:599px){.mat-tab-link{min-width:72px}}.mat-ink-bar{position:absolute;bottom:0;height:2px;transition:.5s cubic-bezier(.35,0,.25,1)}._mat-animation-noopable.mat-ink-bar{transition:none;animation:none}.mat-tab-group-inverted-header .mat-ink-bar{bottom:auto;top:0}@media (-ms-high-contrast:active){.mat-ink-bar{outline:solid 2px;height:0}}"],
                      host: { 'class': 'mat-tab-nav-bar' },
                      encapsulation: ViewEncapsulation.None,
                      changeDetection: ChangeDetectionStrategy.OnPush,
                  },] },
      ];
      /** @nocollapse */
      MatTabNav.ctorParameters = function () { return [
          { type: ElementRef },
          { type: Directionality, decorators: [{ type: Optional }] },
          { type: NgZone },
          { type: ChangeDetectorRef },
          { type: ViewportRuler }
      ]; };
      MatTabNav.propDecorators = {
          _inkBar: [{ type: ViewChild, args: [MatInkBar, { static: true },] }],
          _tabLinks: [{ type: ContentChildren, args: [forwardRef((/**
                       * @return {?}
                       */
                      function () { return MatTabLink; })), { descendants: true },] }],
          backgroundColor: [{ type: Input }]
      };
      return MatTabNav;
  }(_MatTabNavMixinBase));
  // Boilerplate for applying mixins to MatTabLink.
  var 
  // Boilerplate for applying mixins to MatTabLink.
  MatTabLinkBase = /** @class */ (function () {
      function MatTabLinkBase() {
      }
      return MatTabLinkBase;
  }());
  /** @type {?} */
  var _MatTabLinkMixinBase = mixinTabIndex(mixinDisableRipple(mixinDisabled(MatTabLinkBase)));
  /**
   * Link inside of a `mat-tab-nav-bar`.
   */
  var MatTabLink = /** @class */ (function (_super) {
      __extends(MatTabLink, _super);
      function MatTabLink(_tabNavBar, _elementRef, ngZone, platform, globalRippleOptions, tabIndex, _focusMonitor, animationMode) {
          var _this = _super.call(this) || this;
          _this._tabNavBar = _tabNavBar;
          _this._elementRef = _elementRef;
          _this._focusMonitor = _focusMonitor;
          /**
           * Whether the tab link is active or not.
           */
          _this._isActive = false;
          _this._tabLinkRipple = new RippleRenderer(_this, ngZone, _elementRef, platform);
          _this._tabLinkRipple.setupTriggerEvents(_elementRef.nativeElement);
          _this.rippleConfig = globalRippleOptions || {};
          _this.tabIndex = parseInt(tabIndex) || 0;
          _focusMonitor.monitor(_elementRef);
          if (animationMode === 'NoopAnimations') {
              _this.rippleConfig.animation = { enterDuration: 0, exitDuration: 0 };
          }
          return _this;
      }
      Object.defineProperty(MatTabLink.prototype, "active", {
          /** Whether the link is active. */
          get: /**
           * Whether the link is active.
           * @return {?}
           */
          function () { return this._isActive; },
          set: /**
           * @param {?} value
           * @return {?}
           */
          function (value) {
              if (value !== this._isActive) {
                  this._isActive = value;
                  this._tabNavBar.updateActiveLink(this._elementRef);
              }
          },
          enumerable: true,
          configurable: true
      });
      Object.defineProperty(MatTabLink.prototype, "rippleDisabled", {
          /**
           * Whether ripples are disabled on interaction.
           * @docs-private
           */
          get: /**
           * Whether ripples are disabled on interaction.
           * \@docs-private
           * @return {?}
           */
          function () {
              return this.disabled || this.disableRipple || this._tabNavBar.disableRipple ||
                  !!this.rippleConfig.disabled;
          },
          enumerable: true,
          configurable: true
      });
      /**
       * @return {?}
       */
      MatTabLink.prototype.ngOnDestroy = /**
       * @return {?}
       */
      function () {
          this._tabLinkRipple._removeTriggerEvents();
          this._focusMonitor.stopMonitoring(this._elementRef);
      };
      MatTabLink.decorators = [
          { type: Directive, args: [{
                      selector: '[mat-tab-link], [matTabLink]',
                      exportAs: 'matTabLink',
                      inputs: ['disabled', 'disableRipple', 'tabIndex'],
                      host: {
                          'class': 'mat-tab-link',
                          '[attr.aria-current]': 'active',
                          '[attr.aria-disabled]': 'disabled.toString()',
                          '[attr.tabIndex]': 'tabIndex',
                          '[class.mat-tab-disabled]': 'disabled',
                          '[class.mat-tab-label-active]': 'active',
                      }
                  },] },
      ];
      /** @nocollapse */
      MatTabLink.ctorParameters = function () { return [
          { type: MatTabNav },
          { type: ElementRef },
          { type: NgZone },
          { type: Platform },
          { type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [MAT_RIPPLE_GLOBAL_OPTIONS,] }] },
          { type: String, decorators: [{ type: Attribute, args: ['tabindex',] }] },
          { type: FocusMonitor },
          { type: String, decorators: [{ type: Optional }, { type: Inject, args: [ANIMATION_MODULE_TYPE,] }] }
      ]; };
      MatTabLink.propDecorators = {
          active: [{ type: Input }]
      };
      return MatTabLink;
  }(_MatTabLinkMixinBase));
  
  /**
   * @fileoverview added by tsickle
   * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
   */
  var MatTabsModule = /** @class */ (function () {
      function MatTabsModule() {
      }
      MatTabsModule.decorators = [
          { type: NgModule, args: [{
                      imports: [
                          CommonModule,
                          MatCommonModule,
                          PortalModule,
                          MatRippleModule,
                          ObserversModule,
                          A11yModule,
                      ],
                      // Don't export all components because some are only to be used internally.
                      exports: [
                          MatCommonModule,
                          MatTabGroup,
                          MatTabLabel,
                          MatTab,
                          MatTabNav,
                          MatTabLink,
                          MatTabContent,
                      ],
                      declarations: [
                          MatTabGroup,
                          MatTabLabel,
                          MatTab,
                          MatInkBar,
                          MatTabLabelWrapper,
                          MatTabNav,
                          MatTabLink,
                          MatTabBody,
                          MatTabBodyPortal,
                          MatTabHeader,
                          MatTabContent,
                      ],
                  },] },
      ];
      return MatTabsModule;
  }());
  
  /**
   * @fileoverview added by tsickle
   * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
   */
  
  /**
   * @fileoverview added by tsickle
   * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
   */
  
  /**
   * @fileoverview added by tsickle
   * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
   */
  
  export { MatInkBar, _MAT_INK_BAR_POSITIONER, MatTabBody, MatTabBodyPortal, MatTabHeader, MatTabLabelWrapper, MatTab, MatTabLabel, MatTabNav, MatTabLink, MatTabContent, MatTabsModule, MatTabChangeEvent, MAT_TABS_CONFIG, MatTabGroup, matTabsAnimations, _MAT_INK_BAR_POSITIONER_FACTORY as ɵa20 };
  //# sourceMappingURL=tabs.es5.js.map
  