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
   */
  (function (global, factory) {
  	typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('@angular/core'), require('@angular/cdk/portal'), require('@angular/material/core'), require('rxjs'), require('@angular/animations'), require('@angular/cdk/bidi'), require('rxjs/operators'), require('@angular/cdk/coercion'), require('@angular/cdk/keycodes'), require('@angular/cdk/scrolling'), require('@angular/cdk/platform'), require('@angular/cdk/observers'), require('@angular/common')) :
  	typeof define === 'function' && define.amd ? define('@angular/material/tabs', ['exports', '@angular/core', '@angular/cdk/portal', '@angular/material/core', 'rxjs', '@angular/animations', '@angular/cdk/bidi', 'rxjs/operators', '@angular/cdk/coercion', '@angular/cdk/keycodes', '@angular/cdk/scrolling', '@angular/cdk/platform', '@angular/cdk/observers', '@angular/common'], factory) :
  	(factory((global.ng = global.ng || {}, global.ng.material = global.ng.material || {}, global.ng.material.tabs = {}),global.ng.core,global.ng.cdk.portal,global.ng.material.core,global.Rx,global.ng.animations,global.ng.cdk.bidi,global.Rx.operators,global.ng.cdk.coercion,global.ng.cdk.keycodes,global.ng.cdk.scrolling,global.ng.cdk.platform,global.ng.cdk.observers,global.ng.common));
  }(this, (function (exports,core,portal,core$1,rxjs,animations,bidi,operators,coercion,keycodes,scrolling,platform,observers,common) { 'use strict';
  
  /*! *****************************************************************************
  Copyright (c) Microsoft Corporation. All rights reserved.
  Licensed under the Apache License, Version 2.0 (the "License"); you may not use
  this file except in compliance with the License. You may obtain a copy of the
  License at http://www.apache.org/licenses/LICENSE-2.0
  
  THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
  WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
  MERCHANTABLITY OR NON-INFRINGEMENT.
  
  See the Apache Version 2.0 License for specific language governing permissions
  and limitations under the License.
  ***************************************************************************** */
  /* global Reflect, Promise */
  
  var extendStatics = Object.setPrototypeOf ||
      ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
      function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
  
  function __extends(d, b) {
      extendStatics(d, b);
      function __() { this.constructor = d; }
      d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
  }
  
  /**
   * @fileoverview added by tsickle
   * @suppress {checkTypes} checked by tsc
   */
  /**
   * Injection token for the MatInkBar's Positioner.
   */
  var /** @type {?} */ _MAT_INK_BAR_POSITIONER = new core.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() {
      var /** @type {?} */ method = 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) {
          this._elementRef = _elementRef;
          this._ngZone = _ngZone;
          this._inkBarPositioner = _inkBarPositioner;
      }
      /**
       * 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(function () {
                  requestAnimationFrame(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
       * @return {?}
       */
      MatInkBar.prototype._setStyles = /**
       * Sets the proper styles to the ink bar element.
       * @param {?} element
       * @return {?}
       */
      function (element) {
          var /** @type {?} */ positions = this._inkBarPositioner(element);
          var /** @type {?} */ inkBar = this._elementRef.nativeElement;
          inkBar.style.left = positions.left;
          inkBar.style.width = positions.width;
      };
      MatInkBar.decorators = [
          { type: core.Directive, args: [{
                      selector: 'mat-ink-bar',
                      host: {
                          'class': 'mat-ink-bar',
                      },
                  },] },
      ];
      /** @nocollapse */
      MatInkBar.ctorParameters = function () { return [
          { type: core.ElementRef, },
          { type: core.NgZone, },
          { type: undefined, decorators: [{ type: core.Inject, args: [_MAT_INK_BAR_POSITIONER,] },] },
      ]; };
      return MatInkBar;
  }());
  
  /**
   * @fileoverview added by tsickle
   * @suppress {checkTypes} checked by tsc
   */
  /**
   * Used to flag tab labels for use with the portal directive
   */
  var MatTabLabel = /** @class */ (function (_super) {
      __extends(MatTabLabel, _super);
      function MatTabLabel(templateRef, viewContainerRef) {
          return _super.call(this, templateRef, viewContainerRef) || this;
      }
      MatTabLabel.decorators = [
          { type: core.Directive, args: [{
                      selector: '[mat-tab-label], [matTabLabel]',
                  },] },
      ];
      /** @nocollapse */
      MatTabLabel.ctorParameters = function () { return [
          { type: core.TemplateRef, },
          { type: core.ViewContainerRef, },
      ]; };
      return MatTabLabel;
  }(portal.CdkPortal));
  
  /**
   * @fileoverview added by tsickle
   * @suppress {checkTypes} 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: core.Directive, args: [{ selector: '[matTabContent]' },] },
      ];
      /** @nocollapse */
      MatTabContent.ctorParameters = function () { return [
          { type: core.TemplateRef, },
      ]; };
      return MatTabContent;
  }());
  
  /**
   * @fileoverview added by tsickle
   * @suppress {checkTypes} checked by tsc
   */
  /**
   * \@docs-private
   */
  var   /**
   * \@docs-private
   */
  MatTabBase = /** @class */ (function () {
      function MatTabBase() {
      }
      return MatTabBase;
  }());
  var /** @type {?} */ _MatTabMixinBase = core$1.mixinDisabled(MatTabBase);
  var MatTab = /** @class */ (function (_super) {
      __extends(MatTab, _super);
      function MatTab(_viewContainerRef) {
          var _this = _super.call(this) || this;
          _this._viewContainerRef = _viewContainerRef;
          /**
           * The plain text label for the tab, used when there is no template label.
           */
          _this.textLabel = '';
          /**
           * The portal that will be the hosted content of the tab
           */
          _this._contentPortal = null;
          /**
           * Emits whenever the label changes.
           */
          _this._labelChange = new rxjs.Subject();
          /**
           * Emits whenever the disable changes
           */
          _this._disableChange = new rxjs.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')) {
              this._labelChange.next();
          }
          if (changes.hasOwnProperty('disabled')) {
              this._disableChange.next();
          }
      };
      /**
       * @return {?}
       */
      MatTab.prototype.ngOnDestroy = /**
       * @return {?}
       */
      function () {
          this._disableChange.complete();
          this._labelChange.complete();
      };
      /**
       * @return {?}
       */
      MatTab.prototype.ngOnInit = /**
       * @return {?}
       */
      function () {
          this._contentPortal = new portal.TemplatePortal(this._explicitContent || this._implicitContent, this._viewContainerRef);
      };
      MatTab.decorators = [
          { type: core.Component, args: [{selector: 'mat-tab',
                      template: "<ng-template><ng-content></ng-content></ng-template>",
                      inputs: ['disabled'],
                      changeDetection: core.ChangeDetectionStrategy.OnPush,
                      encapsulation: core.ViewEncapsulation.None,
                      exportAs: 'matTab',
                  },] },
      ];
      /** @nocollapse */
      MatTab.ctorParameters = function () { return [
          { type: core.ViewContainerRef, },
      ]; };
      MatTab.propDecorators = {
          "templateLabel": [{ type: core.ContentChild, args: [MatTabLabel,] },],
          "_explicitContent": [{ type: core.ContentChild, args: [MatTabContent, { read: core.TemplateRef },] },],
          "_implicitContent": [{ type: core.ViewChild, args: [core.TemplateRef,] },],
          "textLabel": [{ type: core.Input, args: ['label',] },],
      };
      return MatTab;
  }(_MatTabMixinBase));
  
  /**
   * @fileoverview added by tsickle
   * @suppress {checkTypes} checked by tsc
   */
  /**
   * Animations used by the Material tabs.
   */
  var /** @type {?} */ matTabsAnimations = {
      /** Animation translates a tab along the X axis. */
      translateTab: animations.trigger('translateTab', [
          // Note: transitions to `none` instead of 0, because some browsers might blur the content.
          animations.state('center, void, left-origin-center, right-origin-center', animations.style({ transform: 'none' })),
          animations.state('left', animations.style({ transform: 'translate3d(-100%, 0, 0)' })),
          animations.state('right', animations.style({ transform: 'translate3d(100%, 0, 0)' })),
          animations.transition('* => left, * => right, left => center, right => center', animations.animate('500ms cubic-bezier(0.35, 0, 0.25, 1)')),
          animations.transition('void => left-origin-center', [
              animations.style({ transform: 'translate3d(-100%, 0, 0)' }),
              animations.animate('500ms cubic-bezier(0.35, 0, 0.25, 1)')
          ]),
          animations.transition('void => right-origin-center', [
              animations.style({ transform: 'translate3d(100%, 0, 0)' }),
              animations.animate('500ms cubic-bezier(0.35, 0, 0.25, 1)')
          ])
      ])
  };
  
  /**
   * @fileoverview added by tsickle
   * @suppress {checkTypes} 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 = rxjs.Subscription.EMPTY;
          /**
           * Subscription to events for when the tab body finishes leaving from center position.
           */
          _this._leavingSub = rxjs.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(operators.startWith(this._host._isCenterPosition(this._host._position)))
              .subscribe(function (isCentering) {
              if (isCentering && !_this.hasAttached()) {
                  _this.attach(_this._host._content);
              }
          });
          this._leavingSub = this._host._afterLeavingCenter.subscribe(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: core.Directive, args: [{
                      selector: '[matTabBodyHost]'
                  },] },
      ];
      /** @nocollapse */
      MatTabBodyPortal.ctorParameters = function () { return [
          { type: core.ComponentFactoryResolver, },
          { type: core.ViewContainerRef, },
          { type: MatTabBody, decorators: [{ type: core.Inject, args: [core.forwardRef(function () { return MatTabBody; }),] },] },
      ]; };
      return MatTabBodyPortal;
  }(portal.CdkPortalOutlet));
  /**
   * Wrapper for the contents of a tab.
   * \@docs-private
   */
  var MatTabBody = /** @class */ (function () {
      function MatTabBody(_elementRef, _dir) {
          this._elementRef = _elementRef;
          this._dir = _dir;
          /**
           * Event emitted when the tab begins to animate towards the center as the active tab.
           */
          this._onCentering = new core.EventEmitter();
          /**
           * Event emitted before the centering of the tab begins.
           */
          this._beforeCentering = new core.EventEmitter();
          /**
           * Event emitted before the centering of the tab begins.
           */
          this._afterLeavingCenter = new core.EventEmitter();
          /**
           * Event emitted when the tab completes its animation towards the center.
           */
          this._onCentered = new core.EventEmitter(true);
      }
      Object.defineProperty(MatTabBody.prototype, "position", {
          set: /**
           * The shifted index position of the tab body, where zero represents the active center tab.
           * @param {?} position
           * @return {?}
           */
          function (position) {
              if (position < 0) {
                  this._position = this._getLayoutDirection() == 'ltr' ? 'left' : 'right';
              }
              else if (position > 0) {
                  this._position = this._getLayoutDirection() == 'ltr' ? 'right' : 'left';
              }
              else {
                  this._position = 'center';
              }
          },
          enumerable: true,
          configurable: true
      });
      Object.defineProperty(MatTabBody.prototype, "origin", {
          set: /**
           * The origin position from which this tab should appear when it is centered into view.
           * @param {?} origin
           * @return {?}
           */
          function (origin) {
              if (origin == null) {
                  return;
              }
              var /** @type {?} */ dir = this._getLayoutDirection();
              if ((dir == 'ltr' && origin <= 0) || (dir == 'rtl' && origin > 0)) {
                  this._origin = 'left';
              }
              else {
                  this._origin = 'right';
              }
          },
          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) {
              this._position = this._origin == 'left' ? 'left-origin-center' : 'right-origin-center';
          }
      };
      /**
       * @param {?} e
       * @return {?}
       */
      MatTabBody.prototype._onTranslateTabStarted = /**
       * @param {?} e
       * @return {?}
       */
      function (e) {
          var /** @type {?} */ isCentering = this._isCenterPosition(e.toState);
          this._beforeCentering.emit(isCentering);
          if (isCentering) {
              this._onCentering.emit(this._elementRef.nativeElement.clientHeight);
          }
      };
      /**
       * @param {?} e
       * @return {?}
       */
      MatTabBody.prototype._onTranslateTabComplete = /**
       * @param {?} e
       * @return {?}
       */
      function (e) {
          // If the transition to the center is complete, emit an event.
          if (this._isCenterPosition(e.toState) && this._isCenterPosition(this._position)) {
              this._onCentered.emit();
          }
          if (this._isCenterPosition(e.fromState) && !this._isCenterPosition(this._position)) {
              this._afterLeavingCenter.emit();
          }
      };
      /** 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';
      };
      MatTabBody.decorators = [
          { type: core.Component, args: [{selector: 'mat-tab-body',
                      template: "<div class=\"mat-tab-body-content\" #content [@translateTab]=\"_position\" (@translateTab.start)=\"_onTranslateTabStarted($event)\" (@translateTab.done)=\"_onTranslateTabComplete($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: core.ViewEncapsulation.None,
                      changeDetection: core.ChangeDetectionStrategy.OnPush,
                      animations: [matTabsAnimations.translateTab],
                      host: {
                          'class': 'mat-tab-body',
                      },
                  },] },
      ];
      /** @nocollapse */
      MatTabBody.ctorParameters = function () { return [
          { type: core.ElementRef, },
          { type: bidi.Directionality, decorators: [{ type: core.Optional },] },
      ]; };
      MatTabBody.propDecorators = {
          "_onCentering": [{ type: core.Output },],
          "_beforeCentering": [{ type: core.Output },],
          "_afterLeavingCenter": [{ type: core.Output },],
          "_onCentered": [{ type: core.Output },],
          "_portalHost": [{ type: core.ViewChild, args: [portal.PortalHostDirective,] },],
          "_content": [{ type: core.Input, args: ['content',] },],
          "position": [{ type: core.Input },],
          "origin": [{ type: core.Input },],
      };
      return MatTabBody;
  }());
  
  /**
   * @fileoverview added by tsickle
   * @suppress {checkTypes} checked by tsc
   */
  /**
   * \@docs-private
   */
  var   /**
   * \@docs-private
   */
  MatTabLabelWrapperBase = /** @class */ (function () {
      function MatTabLabelWrapperBase() {
      }
      return MatTabLabelWrapperBase;
  }());
  var /** @type {?} */ _MatTabLabelWrapperMixinBase = core$1.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: core.Directive, args: [{
                      selector: '[matTabLabelWrapper]',
                      inputs: ['disabled'],
                      host: {
                          '[class.mat-tab-disabled]': 'disabled'
                      }
                  },] },
      ];
      /** @nocollapse */
      MatTabLabelWrapper.ctorParameters = function () { return [
          { type: core.ElementRef, },
      ]; };
      return MatTabLabelWrapper;
  }(_MatTabLabelWrapperMixinBase));
  
  /**
   * @fileoverview added by tsickle
   * @suppress {checkTypes} checked by tsc
   */
  /**
   * 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.
   */
  var /** @type {?} */ EXAGGERATED_OVERSCROLL = 60;
  /**
   * \@docs-private
   */
  var   /**
   * \@docs-private
   */
  MatTabHeaderBase = /** @class */ (function () {
      function MatTabHeaderBase() {
      }
      return MatTabHeaderBase;
  }());
  var /** @type {?} */ _MatTabHeaderMixinBase = core$1.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) {
          var _this = _super.call(this) || this;
          _this._elementRef = _elementRef;
          _this._changeDetectorRef = _changeDetectorRef;
          _this._viewportRuler = _viewportRuler;
          _this._dir = _dir;
          /**
           * The tab index that is focused.
           */
          _this._focusIndex = 0;
          /**
           * 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;
          /**
           * Combines listeners that will re-align the ink bar whenever they're invoked.
           */
          _this._realignInkBar = rxjs.Subscription.EMPTY;
          /**
           * 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;
          _this._selectedIndex = 0;
          /**
           * Event emitted when the option is selected.
           */
          _this.selectFocusedIndex = new core.EventEmitter();
          /**
           * Event emitted when a label is focused.
           */
          _this.indexFocused = new core.EventEmitter();
          return _this;
      }
      Object.defineProperty(MatTabHeader.prototype, "selectedIndex", {
          get: /**
           * The index of the active tab.
           * @return {?}
           */
          function () { return this._selectedIndex; },
          set: /**
           * @param {?} value
           * @return {?}
           */
          function (value) {
              value = coercion.coerceNumberProperty(value);
              this._selectedIndexChanged = this._selectedIndex != value;
              this._selectedIndex = value;
              this._focusIndex = 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();
          }
      };
      /**
       * @param {?} event
       * @return {?}
       */
      MatTabHeader.prototype._handleKeydown = /**
       * @param {?} event
       * @return {?}
       */
      function (event) {
          switch (event.keyCode) {
              case keycodes.RIGHT_ARROW:
                  this._focusNextTab();
                  break;
              case keycodes.LEFT_ARROW:
                  this._focusPreviousTab();
                  break;
              case keycodes.HOME:
                  this._focusFirstTab();
                  event.preventDefault();
                  break;
              case keycodes.END:
                  this._focusLastTab();
                  event.preventDefault();
                  break;
              case keycodes.ENTER:
              case keycodes.SPACE:
                  this.selectFocusedIndex.emit(this.focusIndex);
                  event.preventDefault();
                  break;
          }
      };
      /**
       * 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;
          var /** @type {?} */ dirChange = this._dir ? this._dir.change : rxjs.of(null);
          var /** @type {?} */ resize = this._viewportRuler.change(150);
          var /** @type {?} */ realign = function () {
              _this._updatePagination();
              _this._alignInkBarToSelectedTab();
          };
          // 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();
          this._realignInkBar = rxjs.merge(dirChange, resize).subscribe(realign);
      };
      /**
       * @return {?}
       */
      MatTabHeader.prototype.ngOnDestroy = /**
       * @return {?}
       */
      function () {
          this._realignInkBar.unsubscribe();
      };
      /**
       * 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 () {
          this._updatePagination();
          this._alignInkBarToSelectedTab();
          this._changeDetectorRef.markForCheck();
      };
      /**
       * Updating the view whether pagination should be enabled or not
       */
      /**
       * Updating the view whether pagination should be enabled or not
       * @return {?}
       */
      MatTabHeader.prototype._updatePagination = /**
       * Updating the view whether pagination should be enabled or not
       * @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._focusIndex; },
          /** 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) {
                  return;
              }
              this._focusIndex = value;
              this.indexFocused.emit(value);
              this._setTabFocus(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;
          }
          var /** @type {?} */ 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.
              var /** @type {?} */ containerEl = this._tabListContainer.nativeElement;
              var /** @type {?} */ dir = this._getLayoutDirection();
              if (dir == 'ltr') {
                  containerEl.scrollLeft = 0;
              }
              else {
                  containerEl.scrollLeft = containerEl.scrollWidth - containerEl.offsetWidth;
              }
          }
      };
      /**
       * Moves the focus towards the beginning or the end of the list depending on the offset provided.
       * Valid offsets are 1 and -1.
       */
      /**
       * Moves the focus towards the beginning or the end of the list depending on the offset provided.
       * Valid offsets are 1 and -1.
       * @param {?} offset
       * @return {?}
       */
      MatTabHeader.prototype._moveFocus = /**
       * Moves the focus towards the beginning or the end of the list depending on the offset provided.
       * Valid offsets are 1 and -1.
       * @param {?} offset
       * @return {?}
       */
      function (offset) {
          if (this._labelWrappers) {
              var /** @type {?} */ tabs = this._labelWrappers.toArray();
              for (var /** @type {?} */ i = this.focusIndex + offset; i < tabs.length && i >= 0; i += offset) {
                  if (this._isValidIndex(i)) {
                      this.focusIndex = i;
                      return;
                  }
              }
          }
      };
      /** Increment the focus index by 1 until a valid tab is found. */
      /**
       * Increment the focus index by 1 until a valid tab is found.
       * @return {?}
       */
      MatTabHeader.prototype._focusNextTab = /**
       * Increment the focus index by 1 until a valid tab is found.
       * @return {?}
       */
      function () {
          this._moveFocus(this._getLayoutDirection() == 'ltr' ? 1 : -1);
      };
      /** Decrement the focus index by 1 until a valid tab is found. */
      /**
       * Decrement the focus index by 1 until a valid tab is found.
       * @return {?}
       */
      MatTabHeader.prototype._focusPreviousTab = /**
       * Decrement the focus index by 1 until a valid tab is found.
       * @return {?}
       */
      function () {
          this._moveFocus(this._getLayoutDirection() == 'ltr' ? -1 : 1);
      };
      /**
       * Focuses the first tab.
       * @return {?}
       */
      MatTabHeader.prototype._focusFirstTab = /**
       * Focuses the first tab.
       * @return {?}
       */
      function () {
          for (var /** @type {?} */ i = 0; i < this._labelWrappers.length; i++) {
              if (this._isValidIndex(i)) {
                  this.focusIndex = i;
                  break;
              }
          }
      };
      /**
       * Focuses the last tab.
       * @return {?}
       */
      MatTabHeader.prototype._focusLastTab = /**
       * Focuses the last tab.
       * @return {?}
       */
      function () {
          for (var /** @type {?} */ i = this._labelWrappers.length - 1; i > -1; i--) {
              if (this._isValidIndex(i)) {
                  this.focusIndex = i;
                  break;
              }
          }
      };
      /** 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 () {
          var /** @type {?} */ scrollDistance = this.scrollDistance;
          var /** @type {?} */ translateX = this._getLayoutDirection() === 'ltr' ? -scrollDistance : scrollDistance;
          this._tabList.nativeElement.style.transform = "translate3d(" + translateX + "px, 0, 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 {?} v
           * @return {?}
           */
          function (v) {
              this._scrollDistance = Math.max(0, Math.min(this._getMaxScrollDistance(), v));
              // 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();
          },
          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 {?} scrollDir
       * @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 {?} scrollDir
       * @return {?}
       */
      function (scrollDir) {
          var /** @type {?} */ viewLength = this._tabListContainer.nativeElement.offsetWidth;
          // Move the scroll distance one-third the length of the tab list's viewport.
          this.scrollDistance += (scrollDir == 'before' ? -1 : 1) * viewLength / 3;
      };
      /**
       * 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) {
          var /** @type {?} */ selectedLabel = this._labelWrappers ? this._labelWrappers.toArray()[labelIndex] : null;
          if (!selectedLabel) {
              return;
          }
          // The view length is the visible width of the tab labels.
          var /** @type {?} */ viewLength = this._tabListContainer.nativeElement.offsetWidth;
          var /** @type {?} */ labelBeforePos, /** @type {?} */ labelAfterPos;
          if (this._getLayoutDirection() == 'ltr') {
              labelBeforePos = selectedLabel.getOffsetLeft();
              labelAfterPos = labelBeforePos + selectedLabel.getOffsetWidth();
          }
          else {
              labelAfterPos = this._tabList.nativeElement.offsetWidth - selectedLabel.getOffsetLeft();
              labelBeforePos = labelAfterPos - selectedLabel.getOffsetWidth();
          }
          var /** @type {?} */ beforeVisiblePos = this.scrollDistance;
          var /** @type {?} */ 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 () {
          var /** @type {?} */ 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 () {
          var /** @type {?} */ lengthOfTabList = this._tabList.nativeElement.scrollWidth;
          var /** @type {?} */ 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 () {
          var /** @type {?} */ selectedLabelWrapper = this._labelWrappers && this._labelWrappers.length ?
              this._labelWrappers.toArray()[this.selectedIndex].elementRef.nativeElement :
              null;
          this._inkBar.alignToElement(selectedLabelWrapper);
      };
      MatTabHeader.decorators = [
          { type: core.Component, args: [{selector: 'mat-tab-header',
                      template: "<div class=\"mat-tab-header-pagination mat-tab-header-pagination-before mat-elevation-z4\" aria-hidden=\"true\" mat-ripple [matRippleDisabled]=\"_disableScrollBefore || disableRipple\" [class.mat-tab-header-pagination-disabled]=\"_disableScrollBefore\" (click)=\"_scrollHeader('before')\"><div class=\"mat-tab-header-pagination-chevron\"></div></div><div class=\"mat-tab-label-container\" #tabListContainer (keydown)=\"_handleKeydown($event)\"><div class=\"mat-tab-list\" #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\" aria-hidden=\"true\" mat-ripple [matRippleDisabled]=\"_disableScrollAfter || disableRipple\" [class.mat-tab-header-pagination-disabled]=\"_disableScrollAfter\" (click)=\"_scrollHeader('after')\"><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}.mat-tab-label.mat-tab-disabled{cursor:default}.mat-tab-label.mat-tab-label-content{display:inline-flex;justify-content:center;align-items:center;white-space:nowrap}@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-tab-group-inverted-header .mat-ink-bar{bottom:auto;top:0}@media screen and (-ms-high-contrast:active){.mat-ink-bar{outline:solid 2px;height:0}}.mat-tab-header-pagination{position:relative;display:none;justify-content:center;align-items:center;min-width:32px;cursor:pointer;z-index:2}.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-tab-labels{display:flex}"],
                      inputs: ['disableRipple'],
                      encapsulation: core.ViewEncapsulation.None,
                      changeDetection: core.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: core.ElementRef, },
          { type: core.ChangeDetectorRef, },
          { type: scrolling.ViewportRuler, },
          { type: bidi.Directionality, decorators: [{ type: core.Optional },] },
      ]; };
      MatTabHeader.propDecorators = {
          "_labelWrappers": [{ type: core.ContentChildren, args: [MatTabLabelWrapper,] },],
          "_inkBar": [{ type: core.ViewChild, args: [MatInkBar,] },],
          "_tabListContainer": [{ type: core.ViewChild, args: ['tabListContainer',] },],
          "_tabList": [{ type: core.ViewChild, args: ['tabList',] },],
          "selectedIndex": [{ type: core.Input },],
          "selectFocusedIndex": [{ type: core.Output },],
          "indexFocused": [{ type: core.Output },],
      };
      return MatTabHeader;
  }(_MatTabHeaderMixinBase));
  
  /**
   * @fileoverview added by tsickle
   * @suppress {checkTypes} checked by tsc
   */
  /**
   * Used to generate unique ID's for each tab component
   */
  var /** @type {?} */ 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;
  }());
  /**
   * \@docs-private
   */
  var   /**
   * \@docs-private
   */
  MatTabGroupBase = /** @class */ (function () {
      function MatTabGroupBase(_elementRef) {
          this._elementRef = _elementRef;
      }
      return MatTabGroupBase;
  }());
  var /** @type {?} */ _MatTabGroupMixinBase = core$1.mixinColor(core$1.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) {
          var _this = _super.call(this, elementRef) || this;
          _this._changeDetectorRef = _changeDetectorRef;
          /**
           * 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 = rxjs.Subscription.EMPTY;
          /**
           * Subscription to changes in the tab labels.
           */
          _this._tabLabelSubscription = rxjs.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 core.EventEmitter();
          /**
           * Event emitted when focus has changed within a tab group.
           */
          _this.focusChange = new core.EventEmitter();
          /**
           * Event emitted when the body animation has completed
           */
          _this.animationDone = new core.EventEmitter();
          /**
           * Event emitted when the tab selection has changed.
           */
          _this.selectedTabChange = new core.EventEmitter(true);
          _this._groupId = nextId++;
          return _this;
      }
      Object.defineProperty(MatTabGroup.prototype, "dynamicHeight", {
          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 = coercion.coerceBooleanProperty(value); },
          enumerable: true,
          configurable: true
      });
      Object.defineProperty(MatTabGroup.prototype, "selectedIndex", {
          get: /**
           * The index of the active tab.
           * @return {?}
           */
          function () { return this._selectedIndex; },
          set: /**
           * @param {?} value
           * @return {?}
           */
          function (value) {
              this._indexToSelect = coercion.coerceNumberProperty(value, null);
          },
          enumerable: true,
          configurable: true
      });
      Object.defineProperty(MatTabGroup.prototype, "backgroundColor", {
          get: /**
           * Background color of the tab group.
           * @return {?}
           */
          function () { return this._backgroundColor; },
          set: /**
           * @param {?} value
           * @return {?}
           */
          function (value) {
              var /** @type {?} */ 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;
          // Clamp the next selected index to the boundsof 0 and the tabs length.
          // 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).
          var /** @type {?} */ indexToSelect = this._indexToSelect =
              Math.min(this._tabs.length - 1, Math.max(this._indexToSelect || 0, 0));
          // 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 && this._selectedIndex != null) {
              var /** @type {?} */ tabChangeEvent = this._createChangeEvent(indexToSelect);
              this.selectedTabChange.emit(tabChangeEvent);
              // Emitting this value after change detection has run
              // since the checked content may contain this variable'
              Promise.resolve().then(function () { return _this.selectedIndexChange.emit(indexToSelect); });
          }
          // Setup the position for each tab and optionally setup an origin on the next selected tab.
          this._tabs.forEach(function (tab, index) {
              tab.position = index - indexToSelect;
              tab.isActive = 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(function () {
              _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));
      };
      /**
       * @param {?} index
       * @return {?}
       */
      MatTabGroup.prototype._createChangeEvent = /**
       * @param {?} index
       * @return {?}
       */
      function (index) {
          var /** @type {?} */ 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.
       * @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.
       * @return {?}
       */
      function () {
          var _this = this;
          if (this._tabLabelSubscription) {
              this._tabLabelSubscription.unsubscribe();
          }
          this._tabLabelSubscription = rxjs.merge.apply(void 0, this._tabs.map(function (tab) { return tab._disableChange; }).concat(this._tabs.map(function (tab) { return tab._labelChange; }))).subscribe(function () {
              _this._changeDetectorRef.markForCheck();
          });
      };
      /** 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;
          }
          var /** @type {?} */ 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 () {
          this._tabBodyWrapperHeight = this._tabBodyWrapper.nativeElement.clientHeight;
          this._tabBodyWrapper.nativeElement.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 {?} idx
       * @return {?}
       */
      MatTabGroup.prototype._handleClick = /**
       * Handle click events, setting new selected index if appropriate.
       * @param {?} tab
       * @param {?} tabHeader
       * @param {?} idx
       * @return {?}
       */
      function (tab, tabHeader, idx) {
          if (!tab.disabled) {
              this.selectedIndex = tabHeader.focusIndex = idx;
          }
      };
      /** 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: core.Component, args: [{selector: 'mat-tab-group',
                      exportAs: 'matTabGroup',
                      template: "<mat-tab-header #tabHeader [selectedIndex]=\"selectedIndex\" [disableRipple]=\"disableRipple\" (indexFocused)=\"_focusChanged($event)\" (selectFocusedIndex)=\"selectedIndex = $event\"><div class=\"mat-tab-label\" role=\"tab\" matTabLabelWrapper mat-ripple *ngFor=\"let tab of _tabs; let i = index\" [id]=\"_getTabLabelId(i)\" [attr.tabIndex]=\"_getTabIndex(tab, i)\" [attr.aria-controls]=\"_getTabContentId(i)\" [attr.aria-selected]=\"selectedIndex == i\" [class.mat-tab-label-active]=\"selectedIndex == i\" [disabled]=\"tab.disabled\" [matRippleDisabled]=\"tab.disabled || disableRipple\" (click)=\"_handleClick(tab, tabHeader, i)\"><div class=\"mat-tab-label-content\"><ng-template [ngIf]=\"tab.templateLabel\"><ng-template [cdkPortalOutlet]=\"tab.templateLabel\"></ng-template></ng-template><ng-template [ngIf]=\"!tab.templateLabel\">{{tab.textLabel}}</ng-template></div></div></mat-tab-header><div class=\"mat-tab-body-wrapper\" #tabBodyWrapper><mat-tab-body role=\"tabpanel\" *ngFor=\"let tab of _tabs; let i = index\" [id]=\"_getTabContentId(i)\" [attr.aria-labelledby]=\"_getTabLabelId(i)\" [class.mat-tab-body-active]=\"selectedIndex == i\" [content]=\"tab.content\" [position]=\"tab.position\" [origin]=\"tab.origin\" (_onCentered)=\"_removeTabBodyWrapperHeight()\" (_onCentering)=\"_setTabBodyWrapperHeight($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}.mat-tab-label.mat-tab-disabled{cursor:default}.mat-tab-label.mat-tab-label-content{display:inline-flex;justify-content:center;align-items:center;white-space:nowrap}@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-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-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: core.ViewEncapsulation.None,
                      changeDetection: core.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: core.ElementRef, },
          { type: core.ChangeDetectorRef, },
      ]; };
      MatTabGroup.propDecorators = {
          "_tabs": [{ type: core.ContentChildren, args: [MatTab,] },],
          "_tabBodyWrapper": [{ type: core.ViewChild, args: ['tabBodyWrapper',] },],
          "_tabHeader": [{ type: core.ViewChild, args: ['tabHeader',] },],
          "dynamicHeight": [{ type: core.Input },],
          "selectedIndex": [{ type: core.Input },],
          "headerPosition": [{ type: core.Input },],
          "backgroundColor": [{ type: core.Input },],
          "selectedIndexChange": [{ type: core.Output },],
          "focusChange": [{ type: core.Output },],
          "animationDone": [{ type: core.Output },],
          "selectedTabChange": [{ type: core.Output },],
      };
      return MatTabGroup;
  }(_MatTabGroupMixinBase));
  
  /**
   * @fileoverview added by tsickle
   * @suppress {checkTypes} checked by tsc
   */
  /**
   * \@docs-private
   */
  var   /**
   * \@docs-private
   */
  MatTabNavBase = /** @class */ (function () {
      function MatTabNavBase(_elementRef) {
          this._elementRef = _elementRef;
      }
      return MatTabNavBase;
  }());
  var /** @type {?} */ _MatTabNavMixinBase = core$1.mixinDisableRipple(core$1.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 rxjs.Subject();
          return _this;
      }
      Object.defineProperty(MatTabNav.prototype, "backgroundColor", {
          get: /**
           * Background color of the tab nav.
           * @return {?}
           */
          function () { return this._backgroundColor; },
          set: /**
           * @param {?} value
           * @return {?}
           */
          function (value) {
              var /** @type {?} */ 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.
       * @deletion-target 7.0.0 `element` parameter to be removed.
       */
      /**
       * Notifies the component that the active link has been changed.
       * \@deletion-target 7.0.0 `element` parameter to be removed.
       * @param {?} element
       * @return {?}
       */
      MatTabNav.prototype.updateActiveLink = /**
       * Notifies the component that the active link has been changed.
       * \@deletion-target 7.0.0 `element` parameter to be removed.
       * @param {?} element
       * @return {?}
       */
      function (element) {
          // Note: keeping the `element` for backwards-compat, but isn't being used for anything.
          // @deletion-target 7.0.0
          this._activeLinkChanged = !!element;
          this._changeDetectorRef.markForCheck();
      };
      /**
       * @return {?}
       */
      MatTabNav.prototype.ngAfterContentInit = /**
       * @return {?}
       */
      function () {
          var _this = this;
          this._ngZone.runOutsideAngular(function () {
              var /** @type {?} */ dirChange = _this._dir ? _this._dir.change : rxjs.of(null);
              return rxjs.merge(dirChange, _this._viewportRuler.change(10))
                  .pipe(operators.takeUntil(_this._onDestroy))
                  .subscribe(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) {
              var /** @type {?} */ activeTab = this._tabLinks.find(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: core.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-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}.mat-tab-link:focus{outline:0}.mat-tab-link:focus:not(.mat-tab-disabled){opacity:1}.mat-tab-link.mat-tab-disabled{cursor:default}.mat-tab-link.mat-tab-label-content{display:inline-flex;justify-content:center;align-items:center;white-space:nowrap}[mat-stretch-tabs] .mat-tab-link{flex-basis:0;flex-grow:1}@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-tab-group-inverted-header .mat-ink-bar{bottom:auto;top:0}@media screen and (-ms-high-contrast:active){.mat-ink-bar{outline:solid 2px;height:0}}"],
                      host: { 'class': 'mat-tab-nav-bar' },
                      encapsulation: core.ViewEncapsulation.None,
                      changeDetection: core.ChangeDetectionStrategy.OnPush,
                  },] },
      ];
      /** @nocollapse */
      MatTabNav.ctorParameters = function () { return [
          { type: core.ElementRef, },
          { type: bidi.Directionality, decorators: [{ type: core.Optional },] },
          { type: core.NgZone, },
          { type: core.ChangeDetectorRef, },
          { type: scrolling.ViewportRuler, },
      ]; };
      MatTabNav.propDecorators = {
          "_inkBar": [{ type: core.ViewChild, args: [MatInkBar,] },],
          "_tabLinks": [{ type: core.ContentChildren, args: [core.forwardRef(function () { return MatTabLink; }), { descendants: true },] },],
          "backgroundColor": [{ type: core.Input },],
      };
      return MatTabNav;
  }(_MatTabNavMixinBase));
  var MatTabLinkBase = /** @class */ (function () {
      function MatTabLinkBase() {
      }
      return MatTabLinkBase;
  }());
  var /** @type {?} */ _MatTabLinkMixinBase = core$1.mixinTabIndex(core$1.mixinDisableRipple(core$1.mixinDisabled(MatTabLinkBase)));
  /**
   * Link inside of a `mat-tab-nav-bar`.
   */
  var MatTabLink = /** @class */ (function (_super) {
      __extends(MatTabLink, _super);
      function MatTabLink(_tabNavBar, _elementRef, ngZone, platform$$1, globalOptions, tabIndex) {
          var _this = _super.call(this) || this;
          _this._tabNavBar = _tabNavBar;
          _this._elementRef = _elementRef;
          /**
           * Whether the tab link is active or not.
           */
          _this._isActive = false;
          /**
           * Ripple configuration for ripples that are launched on pointer down.
           * \@docs-private
           */
          _this.rippleConfig = {};
          _this._tabLinkRipple = new core$1.RippleRenderer(_this, ngZone, _elementRef, platform$$1);
          _this._tabLinkRipple.setupTriggerEvents(_elementRef.nativeElement);
          _this.tabIndex = parseInt(tabIndex) || 0;
          if (globalOptions) {
              _this.rippleConfig = {
                  terminateOnPointerUp: globalOptions.terminateOnPointerUp,
                  speedFactor: globalOptions.baseSpeedFactor,
                  animation: globalOptions.animation,
              };
          }
          return _this;
      }
      Object.defineProperty(MatTabLink.prototype, "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;
          },
          enumerable: true,
          configurable: true
      });
      /**
       * @return {?}
       */
      MatTabLink.prototype.ngOnDestroy = /**
       * @return {?}
       */
      function () {
          this._tabLinkRipple._removeTriggerEvents();
      };
      /**
       * Handles the click event, preventing default navigation if the tab link is disabled.
       */
      /**
       * Handles the click event, preventing default navigation if the tab link is disabled.
       * @param {?} event
       * @return {?}
       */
      MatTabLink.prototype._handleClick = /**
       * Handles the click event, preventing default navigation if the tab link is disabled.
       * @param {?} event
       * @return {?}
       */
      function (event) {
          if (this.disabled) {
              event.preventDefault();
          }
      };
      MatTabLink.decorators = [
          { type: core.Directive, args: [{
                      selector: '[mat-tab-link], [matTabLink]',
                      exportAs: 'matTabLink',
                      inputs: ['disabled', 'disableRipple', 'tabIndex'],
                      host: {
                          'class': 'mat-tab-link',
                          '[attr.aria-disabled]': 'disabled.toString()',
                          '[attr.tabIndex]': 'tabIndex',
                          '[class.mat-tab-disabled]': 'disabled',
                          '[class.mat-tab-label-active]': 'active',
                          '(click)': '_handleClick($event)'
                      }
                  },] },
      ];
      /** @nocollapse */
      MatTabLink.ctorParameters = function () { return [
          { type: MatTabNav, },
          { type: core.ElementRef, },
          { type: core.NgZone, },
          { type: platform.Platform, },
          { type: undefined, decorators: [{ type: core.Optional }, { type: core.Inject, args: [core$1.MAT_RIPPLE_GLOBAL_OPTIONS,] },] },
          { type: undefined, decorators: [{ type: core.Attribute, args: ['tabindex',] },] },
      ]; };
      MatTabLink.propDecorators = {
          "active": [{ type: core.Input },],
      };
      return MatTabLink;
  }(_MatTabLinkMixinBase));
  
  /**
   * @fileoverview added by tsickle
   * @suppress {checkTypes} checked by tsc
   */
  var MatTabsModule = /** @class */ (function () {
      function MatTabsModule() {
      }
      MatTabsModule.decorators = [
          { type: core.NgModule, args: [{
                      imports: [
                          common.CommonModule,
                          core$1.MatCommonModule,
                          portal.PortalModule,
                          core$1.MatRippleModule,
                          observers.ObserversModule,
                      ],
                      // Don't export all components because some are only to be used internally.
                      exports: [
                          core$1.MatCommonModule,
                          MatTabGroup,
                          MatTabLabel,
                          MatTab,
                          MatTabNav,
                          MatTabLink,
                          MatTabContent,
                      ],
                      declarations: [
                          MatTabGroup,
                          MatTabLabel,
                          MatTab,
                          MatInkBar,
                          MatTabLabelWrapper,
                          MatTabNav,
                          MatTabLink,
                          MatTabBody,
                          MatTabBodyPortal,
                          MatTabHeader,
                          MatTabContent,
                      ],
                  },] },
      ];
      return MatTabsModule;
  }());
  
  exports.MatInkBar = MatInkBar;
  exports._MAT_INK_BAR_POSITIONER = _MAT_INK_BAR_POSITIONER;
  exports.MatTabBody = MatTabBody;
  exports.MatTabBodyPortal = MatTabBodyPortal;
  exports.MatTabHeader = MatTabHeader;
  exports.MatTabLabelWrapper = MatTabLabelWrapper;
  exports.MatTab = MatTab;
  exports.MatTabLabel = MatTabLabel;
  exports.MatTabNav = MatTabNav;
  exports.MatTabLink = MatTabLink;
  exports.MatTabContent = MatTabContent;
  exports.MatTabsModule = MatTabsModule;
  exports.MatTabChangeEvent = MatTabChangeEvent;
  exports.MatTabGroupBase = MatTabGroupBase;
  exports._MatTabGroupMixinBase = _MatTabGroupMixinBase;
  exports.MatTabGroup = MatTabGroup;
  exports.matTabsAnimations = matTabsAnimations;
  exports.ɵa23 = _MAT_INK_BAR_POSITIONER_FACTORY;
  exports.ɵf23 = MatTabBase;
  exports.ɵg23 = _MatTabMixinBase;
  exports.ɵb23 = MatTabHeaderBase;
  exports.ɵc23 = _MatTabHeaderMixinBase;
  exports.ɵd23 = MatTabLabelWrapperBase;
  exports.ɵe23 = _MatTabLabelWrapperMixinBase;
  exports.ɵj23 = MatTabLinkBase;
  exports.ɵh23 = MatTabNavBase;
  exports.ɵk23 = _MatTabLinkMixinBase;
  exports.ɵi23 = _MatTabNavMixinBase;
  
  Object.defineProperty(exports, '__esModule', { value: true });
  
  })));
  //# sourceMappingURL=material-tabs.umd.js.map
  