RiffMaster_WPFaT2023_Project/Frontend/RiffMasterFront/node_modules/@angular/material/fesm2022/tabs.mjs

import * as i1$2 from '@angular/common';
import { DOCUMENT, CommonModule } from '@angular/common';
import * as i0 from '@angular/core';
import { forwardRef, Directive, Inject, EventEmitter, Optional, Output, Input, Component, ViewEncapsulation, ChangeDetectionStrategy, ViewChild, InjectionToken, TemplateRef, ContentChild, ContentChildren, QueryList, Attribute, NgModule } from '@angular/core';
import * as i5 from '@angular/material/core';
import { mixinDisabled, mixinColor, mixinDisableRipple, mixinTabIndex, MAT_RIPPLE_GLOBAL_OPTIONS, MatCommonModule, MatRippleModule } from '@angular/material/core';
import * as i2 from '@angular/cdk/portal';
import { CdkPortalOutlet, CdkPortal, TemplatePortal, PortalModule } from '@angular/cdk/portal';
import * as i5$1 from '@angular/cdk/observers';
import { ObserversModule } from '@angular/cdk/observers';
import * as i4 from '@angular/cdk/a11y';
import { FocusKeyManager, A11yModule } from '@angular/cdk/a11y';
import * as i1 from '@angular/cdk/bidi';
import { Subscription, Subject, fromEvent, of, merge, EMPTY, Observable, timer, BehaviorSubject } from 'rxjs';
import { startWith, distinctUntilChanged, takeUntil, take, switchMap, skip, filter } from 'rxjs/operators';
import { trigger, state, style, transition, animate } from '@angular/animations';
import { coerceBooleanProperty, coerceNumberProperty } from '@angular/cdk/coercion';
import * as i1$1 from '@angular/cdk/scrolling';
import * as i3 from '@angular/cdk/platform';
import { normalizePassiveListenerOptions } from '@angular/cdk/platform';
import { ANIMATION_MODULE_TYPE } from '@angular/platform-browser/animations';
import { hasModifierKey, SPACE, ENTER } from '@angular/cdk/keycodes';

/**
 * Animations used by the Material tabs.
 * @docs-private
 */
const matTabsAnimations = {
    /** Animation translates a tab along the X axis. */
    translateTab: trigger('translateTab', [
        // 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',
            // Normally this is redundant since we detach the content from the DOM, but if the user
            // opted into keeping the content in the DOM, we have to hide it so it isn't focusable.
            visibility: 'hidden',
        })),
        state('right', style({
            transform: 'translate3d(100%, 0, 0)',
            minHeight: '1px',
            visibility: 'hidden',
        })),
        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)', visibility: 'hidden' }),
            animate('{{animationDuration}} cubic-bezier(0.35, 0, 0.25, 1)'),
        ]),
        transition('void => right-origin-center', [
            style({ transform: 'translate3d(100%, 0, 0)', visibility: 'hidden' }),
            animate('{{animationDuration}} cubic-bezier(0.35, 0, 0.25, 1)'),
        ]),
    ]),
};

/**
 * The portal host directive for the contents of the tab.
 * @docs-private
 */
class MatTabBodyPortal extends CdkPortalOutlet {
    constructor(componentFactoryResolver, viewContainerRef, _host, _document) {
        super(componentFactoryResolver, viewContainerRef, _document);
        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;
    }
    /** Set initial visibility or set up subscription for changing visibility. */
    ngOnInit() {
        super.ngOnInit();
        this._centeringSub = this._host._beforeCentering
            .pipe(startWith(this._host._isCenterPosition(this._host._position)))
            .subscribe((isCentering) => {
            if (isCentering && !this.hasAttached()) {
                this.attach(this._host._content);
            }
        });
        this._leavingSub = this._host._afterLeavingCenter.subscribe(() => {
            if (!this._host.preserveContent) {
                this.detach();
            }
        });
    }
    /** Clean up centering subscription. */
    ngOnDestroy() {
        super.ngOnDestroy();
        this._centeringSub.unsubscribe();
        this._leavingSub.unsubscribe();
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatTabBodyPortal, deps: [{ token: i0.ComponentFactoryResolver }, { token: i0.ViewContainerRef }, { token: forwardRef(() => MatTabBody) }, { token: DOCUMENT }], target: i0.ɵɵFactoryTarget.Directive }); }
    static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.0.0", type: MatTabBodyPortal, selector: "[matTabBodyHost]", usesInheritance: true, ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatTabBodyPortal, decorators: [{
            type: Directive,
            args: [{
                    selector: '[matTabBodyHost]',
                }]
        }], ctorParameters: function () { return [{ type: i0.ComponentFactoryResolver }, { type: i0.ViewContainerRef }, { type: MatTabBody, decorators: [{
                    type: Inject,
                    args: [forwardRef(() => MatTabBody)]
                }] }, { type: undefined, decorators: [{
                    type: Inject,
                    args: [DOCUMENT]
                }] }]; } });
/**
 * Base class with all of the `MatTabBody` functionality.
 * @docs-private
 */
class _MatTabBodyBase {
    /** The shifted index position of the tab body, where zero represents the active center tab. */
    set position(position) {
        this._positionIndex = position;
        this._computePositionAnimationState();
    }
    constructor(_elementRef, _dir, changeDetectorRef) {
        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';
        /** Whether the tab's content should be kept in the DOM while it's off-screen. */
        this.preserveContent = false;
        if (_dir) {
            this._dirChangeSubscription = _dir.change.subscribe((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((x, y) => {
            return x.fromState === y.fromState && x.toState === y.toState;
        }))
            .subscribe(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();
            }
        });
    }
    /**
     * 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.
     */
    ngOnInit() {
        if (this._position == 'center' && this.origin != null) {
            this._position = this._computePositionFromOrigin(this.origin);
        }
    }
    ngOnDestroy() {
        this._dirChangeSubscription.unsubscribe();
        this._translateTabComplete.complete();
    }
    _onTranslateTabStarted(event) {
        const 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. */
    _getLayoutDirection() {
        return this._dir && this._dir.value === 'rtl' ? 'rtl' : 'ltr';
    }
    /** Whether the provided position state is considered center, regardless of origin. */
    _isCenterPosition(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. */
    _computePositionAnimationState(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.
     */
    _computePositionFromOrigin(origin) {
        const dir = this._getLayoutDirection();
        if ((dir == 'ltr' && origin <= 0) || (dir == 'rtl' && origin > 0)) {
            return 'left-origin-center';
        }
        return 'right-origin-center';
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: _MatTabBodyBase, deps: [{ token: i0.ElementRef }, { token: i1.Directionality, optional: true }, { token: i0.ChangeDetectorRef }], target: i0.ɵɵFactoryTarget.Directive }); }
    static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.0.0", type: _MatTabBodyBase, inputs: { _content: ["content", "_content"], origin: "origin", animationDuration: "animationDuration", preserveContent: "preserveContent", position: "position" }, outputs: { _onCentering: "_onCentering", _beforeCentering: "_beforeCentering", _afterLeavingCenter: "_afterLeavingCenter", _onCentered: "_onCentered" }, ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: _MatTabBodyBase, decorators: [{
            type: Directive
        }], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: i1.Directionality, decorators: [{
                    type: Optional
                }] }, { type: i0.ChangeDetectorRef }]; }, propDecorators: { _onCentering: [{
                type: Output
            }], _beforeCentering: [{
                type: Output
            }], _afterLeavingCenter: [{
                type: Output
            }], _onCentered: [{
                type: Output
            }], _content: [{
                type: Input,
                args: ['content']
            }], origin: [{
                type: Input
            }], animationDuration: [{
                type: Input
            }], preserveContent: [{
                type: Input
            }], position: [{
                type: Input
            }] } });
/**
 * Wrapper for the contents of a tab.
 * @docs-private
 */
class MatTabBody extends _MatTabBodyBase {
    constructor(elementRef, dir, changeDetectorRef) {
        super(elementRef, dir, changeDetectorRef);
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatTabBody, deps: [{ token: i0.ElementRef }, { token: i1.Directionality, optional: true }, { token: i0.ChangeDetectorRef }], target: i0.ɵɵFactoryTarget.Component }); }
    static { this.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "16.0.0", type: MatTabBody, selector: "mat-tab-body", host: { classAttribute: "mat-mdc-tab-body" }, viewQueries: [{ propertyName: "_portalHost", first: true, predicate: CdkPortalOutlet, descendants: true }], usesInheritance: true, ngImport: i0, template: "<div class=\"mat-mdc-tab-body-content\" #content\n     [@translateTab]=\"{\n        value: _position,\n        params: {animationDuration: animationDuration}\n     }\"\n     (@translateTab.start)=\"_onTranslateTabStarted($event)\"\n     (@translateTab.done)=\"_translateTabComplete.next($event)\"\n     cdkScrollable>\n  <ng-template matTabBodyHost></ng-template>\n</div>\n", styles: [".mat-mdc-tab-body{top:0;left:0;right:0;bottom:0;position:absolute;display:block;overflow:hidden;outline:0;flex-basis:100%}.mat-mdc-tab-body.mat-mdc-tab-body-active{position:relative;overflow-x:hidden;overflow-y:auto;z-index:1;flex-grow:1}.mat-mdc-tab-group.mat-mdc-tab-group-dynamic-height .mat-mdc-tab-body.mat-mdc-tab-body-active{overflow-y:hidden}.mat-mdc-tab-body-content{height:100%;overflow:auto}.mat-mdc-tab-group-dynamic-height .mat-mdc-tab-body-content{overflow:hidden}.mat-mdc-tab-body-content[style*=\"visibility: hidden\"]{display:none}"], dependencies: [{ kind: "directive", type: MatTabBodyPortal, selector: "[matTabBodyHost]" }], animations: [matTabsAnimations.translateTab], changeDetection: i0.ChangeDetectionStrategy.Default, encapsulation: i0.ViewEncapsulation.None }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatTabBody, decorators: [{
            type: Component,
            args: [{ selector: 'mat-tab-body', encapsulation: ViewEncapsulation.None, changeDetection: ChangeDetectionStrategy.Default, animations: [matTabsAnimations.translateTab], host: {
                        'class': 'mat-mdc-tab-body',
                    }, template: "<div class=\"mat-mdc-tab-body-content\" #content\n     [@translateTab]=\"{\n        value: _position,\n        params: {animationDuration: animationDuration}\n     }\"\n     (@translateTab.start)=\"_onTranslateTabStarted($event)\"\n     (@translateTab.done)=\"_translateTabComplete.next($event)\"\n     cdkScrollable>\n  <ng-template matTabBodyHost></ng-template>\n</div>\n", styles: [".mat-mdc-tab-body{top:0;left:0;right:0;bottom:0;position:absolute;display:block;overflow:hidden;outline:0;flex-basis:100%}.mat-mdc-tab-body.mat-mdc-tab-body-active{position:relative;overflow-x:hidden;overflow-y:auto;z-index:1;flex-grow:1}.mat-mdc-tab-group.mat-mdc-tab-group-dynamic-height .mat-mdc-tab-body.mat-mdc-tab-body-active{overflow-y:hidden}.mat-mdc-tab-body-content{height:100%;overflow:auto}.mat-mdc-tab-group-dynamic-height .mat-mdc-tab-body-content{overflow:hidden}.mat-mdc-tab-body-content[style*=\"visibility: hidden\"]{display:none}"] }]
        }], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: i1.Directionality, decorators: [{
                    type: Optional
                }] }, { type: i0.ChangeDetectorRef }]; }, propDecorators: { _portalHost: [{
                type: ViewChild,
                args: [CdkPortalOutlet]
            }] } });

/**
 * Injection token that can be used to reference instances of `MatTabContent`. It serves as
 * alternative token to the actual `MatTabContent` class which could cause unnecessary
 * retention of the class and its directive metadata.
 */
const MAT_TAB_CONTENT = new InjectionToken('MatTabContent');
/** Decorates the `ng-template` tags and reads out the template from it. */
class MatTabContent {
    constructor(/** Content for the tab. */ template) {
        this.template = template;
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatTabContent, deps: [{ token: i0.TemplateRef }], target: i0.ɵɵFactoryTarget.Directive }); }
    static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.0.0", type: MatTabContent, selector: "[matTabContent]", providers: [{ provide: MAT_TAB_CONTENT, useExisting: MatTabContent }], ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatTabContent, decorators: [{
            type: Directive,
            args: [{
                    selector: '[matTabContent]',
                    providers: [{ provide: MAT_TAB_CONTENT, useExisting: MatTabContent }],
                }]
        }], ctorParameters: function () { return [{ type: i0.TemplateRef }]; } });

/**
 * Injection token that can be used to reference instances of `MatTabLabel`. It serves as
 * alternative token to the actual `MatTabLabel` class which could cause unnecessary
 * retention of the class and its directive metadata.
 */
const MAT_TAB_LABEL = new InjectionToken('MatTabLabel');
/**
 * Used to provide a tab label to a tab without causing a circular dependency.
 * @docs-private
 */
const MAT_TAB = new InjectionToken('MAT_TAB');
/** Used to flag tab labels for use with the portal directive */
class MatTabLabel extends CdkPortal {
    constructor(templateRef, viewContainerRef, _closestTab) {
        super(templateRef, viewContainerRef);
        this._closestTab = _closestTab;
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatTabLabel, deps: [{ token: i0.TemplateRef }, { token: i0.ViewContainerRef }, { token: MAT_TAB, optional: true }], target: i0.ɵɵFactoryTarget.Directive }); }
    static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.0.0", type: MatTabLabel, selector: "[mat-tab-label], [matTabLabel]", providers: [{ provide: MAT_TAB_LABEL, useExisting: MatTabLabel }], usesInheritance: true, ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatTabLabel, decorators: [{
            type: Directive,
            args: [{
                    selector: '[mat-tab-label], [matTabLabel]',
                    providers: [{ provide: MAT_TAB_LABEL, useExisting: MatTabLabel }],
                }]
        }], ctorParameters: function () { return [{ type: i0.TemplateRef }, { type: i0.ViewContainerRef }, { type: undefined, decorators: [{
                    type: Inject,
                    args: [MAT_TAB]
                }, {
                    type: Optional
                }] }]; } });

/** Class that is applied when a tab indicator is active. */
const ACTIVE_CLASS = 'mdc-tab-indicator--active';
/** Class that is applied when the tab indicator should not transition. */
const NO_TRANSITION_CLASS = 'mdc-tab-indicator--no-transition';
/**
 * Abstraction around the MDC tab indicator that acts as the tab header's ink bar.
 * @docs-private
 */
class MatInkBar {
    constructor(_items) {
        this._items = _items;
    }
    /** Hides the ink bar. */
    hide() {
        this._items.forEach(item => item.deactivateInkBar());
    }
    /** Aligns the ink bar to a DOM node. */
    alignToElement(element) {
        const correspondingItem = this._items.find(item => item.elementRef.nativeElement === element);
        const currentItem = this._currentItem;
        if (correspondingItem === currentItem) {
            return;
        }
        currentItem?.deactivateInkBar();
        if (correspondingItem) {
            const clientRect = currentItem?.elementRef.nativeElement.getBoundingClientRect?.();
            // The ink bar won't animate unless we give it the `ClientRect` of the previous item.
            correspondingItem.activateInkBar(clientRect);
            this._currentItem = correspondingItem;
        }
    }
}
/**
 * Mixin that can be used to apply the `MatInkBarItem` behavior to a class.
 * Base on MDC's `MDCSlidingTabIndicatorFoundation`:
 * https://github.com/material-components/material-components-web/blob/c0a11ef0d000a098fd0c372be8f12d6a99302855/packages/mdc-tab-indicator/sliding-foundation.ts
 * @docs-private
 */
function mixinInkBarItem(base) {
    return class extends base {
        constructor(...args) {
            super(...args);
            this._fitToContent = false;
        }
        /** Whether the ink bar should fit to the entire tab or just its content. */
        get fitInkBarToContent() {
            return this._fitToContent;
        }
        set fitInkBarToContent(v) {
            const newValue = coerceBooleanProperty(v);
            if (this._fitToContent !== newValue) {
                this._fitToContent = newValue;
                if (this._inkBarElement) {
                    this._appendInkBarElement();
                }
            }
        }
        /** Aligns the ink bar to the current item. */
        activateInkBar(previousIndicatorClientRect) {
            const element = this.elementRef.nativeElement;
            // Early exit if no indicator is present to handle cases where an indicator
            // may be activated without a prior indicator state
            if (!previousIndicatorClientRect ||
                !element.getBoundingClientRect ||
                !this._inkBarContentElement) {
                element.classList.add(ACTIVE_CLASS);
                return;
            }
            // This animation uses the FLIP approach. You can read more about it at the link below:
            // https://aerotwist.com/blog/flip-your-animations/
            // Calculate the dimensions based on the dimensions of the previous indicator
            const currentClientRect = element.getBoundingClientRect();
            const widthDelta = previousIndicatorClientRect.width / currentClientRect.width;
            const xPosition = previousIndicatorClientRect.left - currentClientRect.left;
            element.classList.add(NO_TRANSITION_CLASS);
            this._inkBarContentElement.style.setProperty('transform', `translateX(${xPosition}px) scaleX(${widthDelta})`);
            // Force repaint before updating classes and transform to ensure the transform properly takes effect
            element.getBoundingClientRect();
            element.classList.remove(NO_TRANSITION_CLASS);
            element.classList.add(ACTIVE_CLASS);
            this._inkBarContentElement.style.setProperty('transform', '');
        }
        /** Removes the ink bar from the current item. */
        deactivateInkBar() {
            this.elementRef.nativeElement.classList.remove(ACTIVE_CLASS);
        }
        /** Initializes the foundation. */
        ngOnInit() {
            this._createInkBarElement();
        }
        /** Destroys the foundation. */
        ngOnDestroy() {
            this._inkBarElement?.remove();
            this._inkBarElement = this._inkBarContentElement = null;
        }
        /** Creates and appends the ink bar element. */
        _createInkBarElement() {
            const documentNode = this.elementRef.nativeElement.ownerDocument || document;
            this._inkBarElement = documentNode.createElement('span');
            this._inkBarContentElement = documentNode.createElement('span');
            this._inkBarElement.className = 'mdc-tab-indicator';
            this._inkBarContentElement.className =
                'mdc-tab-indicator__content mdc-tab-indicator__content--underline';
            this._inkBarElement.appendChild(this._inkBarContentElement);
            this._appendInkBarElement();
        }
        /**
         * Appends the ink bar to the tab host element or content, depending on whether
         * the ink bar should fit to content.
         */
        _appendInkBarElement() {
            if (!this._inkBarElement && (typeof ngDevMode === 'undefined' || ngDevMode)) {
                throw Error('Ink bar element has not been created and cannot be appended');
            }
            const parentElement = this._fitToContent
                ? this.elementRef.nativeElement.querySelector('.mdc-tab__content')
                : this.elementRef.nativeElement;
            if (!parentElement && (typeof ngDevMode === 'undefined' || ngDevMode)) {
                throw Error('Missing element to host the ink bar');
            }
            parentElement.appendChild(this._inkBarElement);
        }
    };
}
/**
 * The default positioner function for the MatInkBar.
 * @docs-private
 */
function _MAT_INK_BAR_POSITIONER_FACTORY() {
    const method = (element) => ({
        left: element ? (element.offsetLeft || 0) + 'px' : '0',
        width: element ? (element.offsetWidth || 0) + 'px' : '0',
    });
    return method;
}
/** Injection token for the MatInkBar's Positioner. */
const _MAT_INK_BAR_POSITIONER = new InjectionToken('MatInkBarPositioner', {
    providedIn: 'root',
    factory: _MAT_INK_BAR_POSITIONER_FACTORY,
});

// Boilerplate for applying mixins to MatTabLabelWrapper.
/** @docs-private */
const _MatTabLabelWrapperMixinBase = mixinDisabled(class {
});
/**
 * Used in the `mat-tab-group` view to display tab labels.
 * @docs-private
 */
class _MatTabLabelWrapperBase extends _MatTabLabelWrapperMixinBase {
    constructor(elementRef) {
        super();
        this.elementRef = elementRef;
    }
    /** Sets focus on the wrapper element */
    focus() {
        this.elementRef.nativeElement.focus();
    }
    getOffsetLeft() {
        return this.elementRef.nativeElement.offsetLeft;
    }
    getOffsetWidth() {
        return this.elementRef.nativeElement.offsetWidth;
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: _MatTabLabelWrapperBase, deps: [{ token: i0.ElementRef }], target: i0.ɵɵFactoryTarget.Directive }); }
    static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.0.0", type: _MatTabLabelWrapperBase, usesInheritance: true, ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: _MatTabLabelWrapperBase, decorators: [{
            type: Directive
        }], ctorParameters: function () { return [{ type: i0.ElementRef }]; } });
const _MatTabLabelWrapperBaseWithInkBarItem = mixinInkBarItem(_MatTabLabelWrapperBase);
/**
 * Used in the `mat-tab-group` view to display tab labels.
 * @docs-private
 */
class MatTabLabelWrapper extends _MatTabLabelWrapperBaseWithInkBarItem {
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatTabLabelWrapper, deps: null, target: i0.ɵɵFactoryTarget.Directive }); }
    static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.0.0", type: MatTabLabelWrapper, selector: "[matTabLabelWrapper]", inputs: { disabled: "disabled", fitInkBarToContent: "fitInkBarToContent" }, host: { properties: { "class.mat-mdc-tab-disabled": "disabled", "attr.aria-disabled": "!!disabled" } }, usesInheritance: true, ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatTabLabelWrapper, decorators: [{
            type: Directive,
            args: [{
                    selector: '[matTabLabelWrapper]',
                    inputs: ['disabled', 'fitInkBarToContent'],
                    host: {
                        '[class.mat-mdc-tab-disabled]': 'disabled',
                        '[attr.aria-disabled]': '!!disabled',
                    },
                }]
        }] });

// Boilerplate for applying mixins to MatTab.
/** @docs-private */
const _MatTabMixinBase = mixinDisabled(class {
});
/**
 * Used to provide a tab group to a tab without causing a circular dependency.
 * @docs-private
 */
const MAT_TAB_GROUP = new InjectionToken('MAT_TAB_GROUP');
/** @docs-private */
class _MatTabBase extends _MatTabMixinBase {
    /** @docs-private */
    get content() {
        return this._contentPortal;
    }
    constructor(_viewContainerRef, _closestTabGroup) {
        super();
        this._viewContainerRef = _viewContainerRef;
        this._closestTabGroup = _closestTabGroup;
        /** 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;
    }
    ngOnChanges(changes) {
        if (changes.hasOwnProperty('textLabel') || changes.hasOwnProperty('disabled')) {
            this._stateChanges.next();
        }
    }
    ngOnDestroy() {
        this._stateChanges.complete();
    }
    ngOnInit() {
        this._contentPortal = new TemplatePortal(this._explicitContent || this._implicitContent, this._viewContainerRef);
    }
    /**
     * This has been extracted to a util because of TS 4 and VE.
     * View Engine doesn't support property rename inheritance.
     * TS 4.0 doesn't allow properties to override accessors or vice-versa.
     * @docs-private
     */
    _setTemplateLabelInput(value) {
        // Only update the label if the query managed to find one. This works around an issue where a
        // user may have manually set `templateLabel` during creation mode, which would then get
        // clobbered by `undefined` when the query resolves. Also note that we check that the closest
        // tab matches the current one so that we don't pick up labels from nested tabs.
        if (value && value._closestTab === this) {
            this._templateLabel = value;
        }
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: _MatTabBase, deps: [{ token: i0.ViewContainerRef }, { token: MAT_TAB_GROUP, optional: true }], target: i0.ɵɵFactoryTarget.Directive }); }
    static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.0.0", type: _MatTabBase, inputs: { textLabel: ["label", "textLabel"], ariaLabel: ["aria-label", "ariaLabel"], ariaLabelledby: ["aria-labelledby", "ariaLabelledby"], labelClass: "labelClass", bodyClass: "bodyClass" }, viewQueries: [{ propertyName: "_implicitContent", first: true, predicate: TemplateRef, descendants: true, static: true }], usesInheritance: true, usesOnChanges: true, ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: _MatTabBase, decorators: [{
            type: Directive
        }], ctorParameters: function () { return [{ type: i0.ViewContainerRef }, { type: undefined, decorators: [{
                    type: Inject,
                    args: [MAT_TAB_GROUP]
                }, {
                    type: Optional
                }] }]; }, propDecorators: { _implicitContent: [{
                type: ViewChild,
                args: [TemplateRef, { static: true }]
            }], textLabel: [{
                type: Input,
                args: ['label']
            }], ariaLabel: [{
                type: Input,
                args: ['aria-label']
            }], ariaLabelledby: [{
                type: Input,
                args: ['aria-labelledby']
            }], labelClass: [{
                type: Input
            }], bodyClass: [{
                type: Input
            }] } });
class MatTab extends _MatTabBase {
    constructor() {
        super(...arguments);
        /**
         * Template provided in the tab content that will be used if present, used to enable lazy-loading
         */
        this._explicitContent = undefined;
    }
    /** Content for the tab label given by `<ng-template mat-tab-label>`. */
    get templateLabel() {
        return this._templateLabel;
    }
    set templateLabel(value) {
        this._setTemplateLabelInput(value);
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatTab, deps: null, target: i0.ɵɵFactoryTarget.Component }); }
    static { this.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "16.0.0", type: MatTab, selector: "mat-tab", inputs: { disabled: "disabled" }, providers: [{ provide: MAT_TAB, useExisting: MatTab }], queries: [{ propertyName: "_explicitContent", first: true, predicate: MatTabContent, descendants: true, read: TemplateRef, static: true }, { propertyName: "templateLabel", first: true, predicate: MatTabLabel, descendants: true }], exportAs: ["matTab"], usesInheritance: true, ngImport: i0, template: "<!-- Create a template for the content of the <mat-tab> so that we can grab a reference to this\n    TemplateRef and use it in a Portal to render the tab content in the appropriate place in the\n    tab-group. -->\n<ng-template><ng-content></ng-content></ng-template>\n", changeDetection: i0.ChangeDetectionStrategy.Default, encapsulation: i0.ViewEncapsulation.None }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatTab, decorators: [{
            type: Component,
            args: [{ selector: 'mat-tab', inputs: ['disabled'], changeDetection: ChangeDetectionStrategy.Default, encapsulation: ViewEncapsulation.None, exportAs: 'matTab', providers: [{ provide: MAT_TAB, useExisting: MatTab }], template: "<!-- Create a template for the content of the <mat-tab> so that we can grab a reference to this\n    TemplateRef and use it in a Portal to render the tab content in the appropriate place in the\n    tab-group. -->\n<ng-template><ng-content></ng-content></ng-template>\n" }]
        }], propDecorators: { _explicitContent: [{
                type: ContentChild,
                args: [MatTabContent, { read: TemplateRef, static: true }]
            }], templateLabel: [{
                type: ContentChild,
                args: [MatTabLabel]
            }] } });

/** Config used to bind passive event listeners */
const passiveEventListenerOptions = normalizePassiveListenerOptions({
    passive: true,
});
/**
 * 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.
 */
const HEADER_SCROLL_DELAY = 650;
/**
 * Interval in milliseconds at which to scroll the header
 * while the user is holding their pointer.
 */
const HEADER_SCROLL_INTERVAL = 100;
/**
 * Base class for a tab header that supported pagination.
 * @docs-private
 */
class MatPaginatedTabHeader {
    /**
     * Whether pagination should be disabled. This can be used to avoid unnecessary
     * layout recalculations if it's known that pagination won't be required.
     */
    get disablePagination() {
        return this._disablePagination;
    }
    set disablePagination(value) {
        this._disablePagination = coerceBooleanProperty(value);
    }
    /** The index of the active tab. */
    get selectedIndex() {
        return this._selectedIndex;
    }
    set selectedIndex(value) {
        value = coerceNumberProperty(value);
        if (this._selectedIndex != value) {
            this._selectedIndexChanged = true;
            this._selectedIndex = value;
            if (this._keyManager) {
                this._keyManager.updateActiveItem(value);
            }
        }
    }
    constructor(_elementRef, _changeDetectorRef, _viewportRuler, _dir, _ngZone, _platform, _animationMode) {
        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._disablePagination = false;
        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(() => {
            fromEvent(_elementRef.nativeElement, 'mouseleave')
                .pipe(takeUntil(this._destroyed))
                .subscribe(() => {
                this._stopInterval();
            });
        });
    }
    ngAfterViewInit() {
        // 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(() => {
            this._handlePaginatorPress('before');
        });
        fromEvent(this._nextPaginator.nativeElement, 'touchstart', passiveEventListenerOptions)
            .pipe(takeUntil(this._destroyed))
            .subscribe(() => {
            this._handlePaginatorPress('after');
        });
    }
    ngAfterContentInit() {
        const dirChange = this._dir ? this._dir.change : of('ltr');
        const resize = this._viewportRuler.change(150);
        const realign = () => {
            this.updatePagination();
            this._alignInkBarToSelectedTab();
        };
        this._keyManager = new FocusKeyManager(this._items)
            .withHorizontalOrientation(this._getLayoutDirection())
            .withHomeAndEnd()
            .withWrap()
            // Allow focus to land on disabled tabs, as per https://w3c.github.io/aria-practices/#kbd_disabled_controls
            .skipPredicate(() => false);
        this._keyManager.updateActiveItem(this._selectedIndex);
        // 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.
        // Note that we use `onStable` instead of `requestAnimationFrame`, because the latter
        // can hold up tests that are in a background tab.
        this._ngZone.onStable.pipe(take(1)).subscribe(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, this._items.changes, this._itemsResized())
            .pipe(takeUntil(this._destroyed))
            .subscribe(() => {
            // We need to defer this to give the browser some time to recalculate
            // the element dimensions. The call has to be wrapped in `NgZone.run`,
            // because the viewport change handler runs outside of Angular.
            this._ngZone.run(() => {
                Promise.resolve().then(() => {
                    // Clamp the scroll distance, because it can change with the number of tabs.
                    this._scrollDistance = Math.max(0, Math.min(this._getMaxScrollDistance(), this._scrollDistance));
                    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.subscribe(newFocusIndex => {
            this.indexFocused.emit(newFocusIndex);
            this._setTabFocus(newFocusIndex);
        });
    }
    /** Sends any changes that could affect the layout of the items. */
    _itemsResized() {
        if (typeof ResizeObserver !== 'function') {
            return EMPTY;
        }
        return this._items.changes.pipe(startWith(this._items), switchMap((tabItems) => new Observable((observer) => this._ngZone.runOutsideAngular(() => {
            const resizeObserver = new ResizeObserver(entries => observer.next(entries));
            tabItems.forEach(item => resizeObserver.observe(item.elementRef.nativeElement));
            return () => {
                resizeObserver.disconnect();
            };
        }))), 
        // Skip the first emit since the resize observer emits when an item
        // is observed for new items when the tab is already inserted
        skip(1), 
        // Skip emissions where all the elements are invisible since we don't want
        // the header to try and re-render with invalid measurements. See #25574.
        filter(entries => entries.some(e => e.contentRect.width > 0 && e.contentRect.height > 0)));
    }
    ngAfterContentChecked() {
        // If the number of tab labels have changed, check if scrolling should be enabled
        if (this._tabLabelCount != this._items.length) {
            this.updatePagination();
            this._tabLabelCount = this._items.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();
        }
    }
    ngOnDestroy() {
        this._keyManager?.destroy();
        this._destroyed.next();
        this._destroyed.complete();
        this._stopScrolling.complete();
    }
    /** Handles keyboard events on the header. */
    _handleKeydown(event) {
        // We don't handle any key bindings with a modifier key.
        if (hasModifierKey(event)) {
            return;
        }
        switch (event.keyCode) {
            case ENTER:
            case SPACE:
                if (this.focusIndex !== this.selectedIndex) {
                    const item = this._items.get(this.focusIndex);
                    if (item && !item.disabled) {
                        this.selectFocusedIndex.emit(this.focusIndex);
                        this._itemSelected(event);
                    }
                }
                break;
            default:
                this._keyManager.onKeydown(event);
        }
    }
    /**
     * Callback for when the MutationObserver detects that the content has changed.
     */
    _onContentChanges() {
        const 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(() => {
                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.
     */
    updatePagination() {
        this._checkPaginationEnabled();
        this._checkScrollingControls();
        this._updateTabScrollPosition();
    }
    /** Tracks which element has focus; used for keyboard navigation */
    get focusIndex() {
        return this._keyManager ? this._keyManager.activeItemIndex : 0;
    }
    /** When the focus index is set, we must manually send focus to the correct label */
    set focusIndex(value) {
        if (!this._isValidIndex(value) || this.focusIndex === value || !this._keyManager) {
            return;
        }
        this._keyManager.setActiveItem(value);
    }
    /**
     * 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.
     */
    _isValidIndex(index) {
        return this._items ? !!this._items.toArray()[index] : true;
    }
    /**
     * Sets focus on the HTML element for the label wrapper and scrolls it into the view if
     * scrolling is enabled.
     */
    _setTabFocus(tabIndex) {
        if (this._showPaginationControls) {
            this._scrollToLabel(tabIndex);
        }
        if (this._items && this._items.length) {
            this._items.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.
            const containerEl = this._tabListContainer.nativeElement;
            const dir = this._getLayoutDirection();
            if (dir == 'ltr') {
                containerEl.scrollLeft = 0;
            }
            else {
                containerEl.scrollLeft = containerEl.scrollWidth - containerEl.offsetWidth;
            }
        }
    }
    /** The layout direction of the containing app. */
    _getLayoutDirection() {
        return this._dir && this._dir.value === 'rtl' ? 'rtl' : 'ltr';
    }
    /** Performs the CSS transformation on the tab list that will cause the list to scroll. */
    _updateTabScrollPosition() {
        if (this.disablePagination) {
            return;
        }
        const scrollDistance = this.scrollDistance;
        const 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 (this._platform.TRIDENT || this._platform.EDGE) {
            this._tabListContainer.nativeElement.scrollLeft = 0;
        }
    }
    /** Sets the distance in pixels that the tab header should be transformed in the X-axis. */
    get scrollDistance() {
        return this._scrollDistance;
    }
    set scrollDistance(value) {
        this._scrollTo(value);
    }
    /**
     * 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.
     */
    _scrollHeader(direction) {
        const viewLength = this._tabListContainer.nativeElement.offsetWidth;
        // Move the scroll distance one-third the length of the tab list's viewport.
        const scrollAmount = ((direction == 'before' ? -1 : 1) * viewLength) / 3;
        return this._scrollTo(this._scrollDistance + scrollAmount);
    }
    /** Handles click events on the pagination arrows. */
    _handlePaginatorClick(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.
     */
    _scrollToLabel(labelIndex) {
        if (this.disablePagination) {
            return;
        }
        const selectedLabel = this._items ? this._items.toArray()[labelIndex] : null;
        if (!selectedLabel) {
            return;
        }
        // The view length is the visible width of the tab labels.
        const viewLength = this._tabListContainer.nativeElement.offsetWidth;
        const { offsetLeft, offsetWidth } = selectedLabel.elementRef.nativeElement;
        let labelBeforePos, labelAfterPos;
        if (this._getLayoutDirection() == 'ltr') {
            labelBeforePos = offsetLeft;
            labelAfterPos = labelBeforePos + offsetWidth;
        }
        else {
            labelAfterPos = this._tabListInner.nativeElement.offsetWidth - offsetLeft;
            labelBeforePos = labelAfterPos - offsetWidth;
        }
        const beforeVisiblePos = this.scrollDistance;
        const afterVisiblePos = this.scrollDistance + viewLength;
        if (labelBeforePos < beforeVisiblePos) {
            // Scroll header to move label to the before direction
            this.scrollDistance -= beforeVisiblePos - labelBeforePos;
        }
        else if (labelAfterPos > afterVisiblePos) {
            // Scroll header to move label to the after direction
            this.scrollDistance += Math.min(labelAfterPos - afterVisiblePos, labelBeforePos - beforeVisiblePos);
        }
    }
    /**
     * 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.
     */
    _checkPaginationEnabled() {
        if (this.disablePagination) {
            this._showPaginationControls = false;
        }
        else {
            const isEnabled = this._tabListInner.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.
     */
    _checkScrollingControls() {
        if (this.disablePagination) {
            this._disableScrollAfter = this._disableScrollBefore = true;
        }
        else {
            // 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.
     */
    _getMaxScrollDistance() {
        const lengthOfTabList = this._tabListInner.nativeElement.scrollWidth;
        const viewLength = this._tabListContainer.nativeElement.offsetWidth;
        return lengthOfTabList - viewLength || 0;
    }
    /** Tells the ink-bar to align itself to the current label wrapper */
    _alignInkBarToSelectedTab() {
        const selectedItem = this._items && this._items.length ? this._items.toArray()[this.selectedIndex] : null;
        const selectedLabelWrapper = selectedItem ? selectedItem.elementRef.nativeElement : null;
        if (selectedLabelWrapper) {
            this._inkBar.alignToElement(selectedLabelWrapper);
        }
        else {
            this._inkBar.hide();
        }
    }
    /** Stops the currently-running paginator interval.  */
    _stopInterval() {
        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.
     */
    _handlePaginatorPress(direction, mouseEvent) {
        // Don't start auto scrolling for right mouse button clicks. Note that we shouldn't have to
        // null check the `button`, but we do it so we don't break tests that use fake events.
        if (mouseEvent && mouseEvent.button != null && mouseEvent.button !== 0) {
            return;
        }
        // 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(() => {
            const { maxScrollDistance, distance } = this._scrollHeader(direction);
            // 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.
     */
    _scrollTo(position) {
        if (this.disablePagination) {
            return { maxScrollDistance: 0, distance: 0 };
        }
        const 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, distance: this._scrollDistance };
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatPaginatedTabHeader, deps: [{ token: i0.ElementRef }, { token: i0.ChangeDetectorRef }, { token: i1$1.ViewportRuler }, { token: i1.Directionality, optional: true }, { token: i0.NgZone }, { token: i3.Platform }, { token: ANIMATION_MODULE_TYPE, optional: true }], target: i0.ɵɵFactoryTarget.Directive }); }
    static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.0.0", type: MatPaginatedTabHeader, inputs: { disablePagination: "disablePagination" }, ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatPaginatedTabHeader, decorators: [{
            type: Directive
        }], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: i0.ChangeDetectorRef }, { type: i1$1.ViewportRuler }, { type: i1.Directionality, decorators: [{
                    type: Optional
                }] }, { type: i0.NgZone }, { type: i3.Platform }, { type: undefined, decorators: [{
                    type: Optional
                }, {
                    type: Inject,
                    args: [ANIMATION_MODULE_TYPE]
                }] }]; }, propDecorators: { disablePagination: [{
                type: Input
            }] } });

/**
 * Base class with all of the `MatTabHeader` functionality.
 * @docs-private
 */
class _MatTabHeaderBase extends MatPaginatedTabHeader {
    /** Whether the ripple effect is disabled or not. */
    get disableRipple() {
        return this._disableRipple;
    }
    set disableRipple(value) {
        this._disableRipple = coerceBooleanProperty(value);
    }
    constructor(elementRef, changeDetectorRef, viewportRuler, dir, ngZone, platform, animationMode) {
        super(elementRef, changeDetectorRef, viewportRuler, dir, ngZone, platform, animationMode);
        this._disableRipple = false;
    }
    _itemSelected(event) {
        event.preventDefault();
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: _MatTabHeaderBase, deps: [{ token: i0.ElementRef }, { token: i0.ChangeDetectorRef }, { token: i1$1.ViewportRuler }, { token: i1.Directionality, optional: true }, { token: i0.NgZone }, { token: i3.Platform }, { token: ANIMATION_MODULE_TYPE, optional: true }], target: i0.ɵɵFactoryTarget.Directive }); }
    static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.0.0", type: _MatTabHeaderBase, inputs: { disableRipple: "disableRipple" }, usesInheritance: true, ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: _MatTabHeaderBase, decorators: [{
            type: Directive
        }], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: i0.ChangeDetectorRef }, { type: i1$1.ViewportRuler }, { type: i1.Directionality, decorators: [{
                    type: Optional
                }] }, { type: i0.NgZone }, { type: i3.Platform }, { type: undefined, decorators: [{
                    type: Optional
                }, {
                    type: Inject,
                    args: [ANIMATION_MODULE_TYPE]
                }] }]; }, propDecorators: { disableRipple: [{
                type: Input
            }] } });
/**
 * 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
 */
class MatTabHeader extends _MatTabHeaderBase {
    constructor(elementRef, changeDetectorRef, viewportRuler, dir, ngZone, platform, animationMode) {
        super(elementRef, changeDetectorRef, viewportRuler, dir, ngZone, platform, animationMode);
    }
    ngAfterContentInit() {
        this._inkBar = new MatInkBar(this._items);
        super.ngAfterContentInit();
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatTabHeader, deps: [{ token: i0.ElementRef }, { token: i0.ChangeDetectorRef }, { token: i1$1.ViewportRuler }, { token: i1.Directionality, optional: true }, { token: i0.NgZone }, { token: i3.Platform }, { token: ANIMATION_MODULE_TYPE, optional: true }], target: i0.ɵɵFactoryTarget.Component }); }
    static { this.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "16.0.0", type: MatTabHeader, selector: "mat-tab-header", inputs: { selectedIndex: "selectedIndex" }, outputs: { selectFocusedIndex: "selectFocusedIndex", indexFocused: "indexFocused" }, host: { properties: { "class.mat-mdc-tab-header-pagination-controls-enabled": "_showPaginationControls", "class.mat-mdc-tab-header-rtl": "_getLayoutDirection() == 'rtl'" }, classAttribute: "mat-mdc-tab-header" }, queries: [{ propertyName: "_items", predicate: MatTabLabelWrapper }], viewQueries: [{ propertyName: "_tabListContainer", first: true, predicate: ["tabListContainer"], descendants: true, static: true }, { propertyName: "_tabList", first: true, predicate: ["tabList"], descendants: true, static: true }, { propertyName: "_tabListInner", first: true, predicate: ["tabListInner"], descendants: true, static: true }, { propertyName: "_nextPaginator", first: true, predicate: ["nextPaginator"], descendants: true }, { propertyName: "_previousPaginator", first: true, predicate: ["previousPaginator"], descendants: true }], usesInheritance: true, ngImport: i0, template: "<!-- TODO: this also had `mat-elevation-z4`. Figure out what we should do with it. -->\n<button class=\"mat-mdc-tab-header-pagination mat-mdc-tab-header-pagination-before\"\n     #previousPaginator\n     aria-hidden=\"true\"\n     type=\"button\"\n     mat-ripple\n     tabindex=\"-1\"\n     [matRippleDisabled]=\"_disableScrollBefore || disableRipple\"\n     [class.mat-mdc-tab-header-pagination-disabled]=\"_disableScrollBefore\"\n     [disabled]=\"_disableScrollBefore || null\"\n     (click)=\"_handlePaginatorClick('before')\"\n     (mousedown)=\"_handlePaginatorPress('before', $event)\"\n     (touchend)=\"_stopInterval()\">\n  <div class=\"mat-mdc-tab-header-pagination-chevron\"></div>\n</button>\n\n<div\n  class=\"mat-mdc-tab-label-container\"\n  #tabListContainer\n  (keydown)=\"_handleKeydown($event)\"\n  [class._mat-animation-noopable]=\"_animationMode === 'NoopAnimations'\">\n  <div\n    #tabList\n    class=\"mat-mdc-tab-list\"\n    role=\"tablist\"\n    (cdkObserveContent)=\"_onContentChanges()\">\n    <div class=\"mat-mdc-tab-labels\" #tabListInner>\n      <ng-content></ng-content>\n    </div>\n  </div>\n</div>\n\n<!-- TODO: this also had `mat-elevation-z4`. Figure out what we should do with it. -->\n<button class=\"mat-mdc-tab-header-pagination mat-mdc-tab-header-pagination-after\"\n     #nextPaginator\n     aria-hidden=\"true\"\n     type=\"button\"\n     mat-ripple\n     [matRippleDisabled]=\"_disableScrollAfter || disableRipple\"\n     [class.mat-mdc-tab-header-pagination-disabled]=\"_disableScrollAfter\"\n     [disabled]=\"_disableScrollAfter || null\"\n     tabindex=\"-1\"\n     (mousedown)=\"_handlePaginatorPress('after', $event)\"\n     (click)=\"_handlePaginatorClick('after')\"\n     (touchend)=\"_stopInterval()\">\n  <div class=\"mat-mdc-tab-header-pagination-chevron\"></div>\n</button>\n", styles: [".mat-mdc-tab-header{display:flex;overflow:hidden;position:relative;flex-shrink:0;--mdc-tab-indicator-active-indicator-height:2px;--mdc-tab-indicator-active-indicator-shape:0;--mdc-secondary-navigation-tab-container-height:48px}.mat-mdc-tab-header-pagination{-webkit-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:rgba(0,0,0,0);touch-action:none;box-sizing:content-box;background:none;border:none;outline:0;padding:0}.mat-mdc-tab-header-pagination::-moz-focus-inner{border:0}.mat-mdc-tab-header-pagination .mat-ripple-element{opacity:.12;background-color:var(--mat-tab-header-inactive-ripple-color)}.mat-mdc-tab-header-pagination-controls-enabled .mat-mdc-tab-header-pagination{display:flex}.mat-mdc-tab-header-pagination-before,.mat-mdc-tab-header-rtl .mat-mdc-tab-header-pagination-after{padding-left:4px}.mat-mdc-tab-header-pagination-before .mat-mdc-tab-header-pagination-chevron,.mat-mdc-tab-header-rtl .mat-mdc-tab-header-pagination-after .mat-mdc-tab-header-pagination-chevron{transform:rotate(-135deg)}.mat-mdc-tab-header-rtl .mat-mdc-tab-header-pagination-before,.mat-mdc-tab-header-pagination-after{padding-right:4px}.mat-mdc-tab-header-rtl .mat-mdc-tab-header-pagination-before .mat-mdc-tab-header-pagination-chevron,.mat-mdc-tab-header-pagination-after .mat-mdc-tab-header-pagination-chevron{transform:rotate(45deg)}.mat-mdc-tab-header-pagination-chevron{border-style:solid;border-width:2px 2px 0 0;height:8px;width:8px;border-color:var(--mat-tab-header-pagination-icon-color)}.mat-mdc-tab-header-pagination-disabled{box-shadow:none;cursor:default;pointer-events:none}.mat-mdc-tab-header-pagination-disabled .mat-mdc-tab-header-pagination-chevron{opacity:.4}.mat-mdc-tab-list{flex-grow:1;position:relative;transition:transform 500ms cubic-bezier(0.35, 0, 0.25, 1)}._mat-animation-noopable .mat-mdc-tab-list{transition:none}._mat-animation-noopable span.mdc-tab-indicator__content,._mat-animation-noopable span.mdc-tab__text-label{transition:none}.mat-mdc-tab-label-container{display:flex;flex-grow:1;overflow:hidden;z-index:1}.mat-mdc-tab-labels{display:flex;flex:1 0 auto}[mat-align-tabs=center]>.mat-mdc-tab-header .mat-mdc-tab-labels{justify-content:center}[mat-align-tabs=end]>.mat-mdc-tab-header .mat-mdc-tab-labels{justify-content:flex-end}.mat-mdc-tab::before{margin:5px}.cdk-high-contrast-active .mat-mdc-tab[aria-disabled=true]{color:GrayText}"], dependencies: [{ kind: "directive", type: i5.MatRipple, selector: "[mat-ripple], [matRipple]", inputs: ["matRippleColor", "matRippleUnbounded", "matRippleCentered", "matRippleRadius", "matRippleAnimation", "matRippleDisabled", "matRippleTrigger"], exportAs: ["matRipple"] }, { kind: "directive", type: i5$1.CdkObserveContent, selector: "[cdkObserveContent]", inputs: ["cdkObserveContentDisabled", "debounce"], outputs: ["cdkObserveContent"], exportAs: ["cdkObserveContent"] }], changeDetection: i0.ChangeDetectionStrategy.Default, encapsulation: i0.ViewEncapsulation.None }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatTabHeader, decorators: [{
            type: Component,
            args: [{ selector: 'mat-tab-header', inputs: ['selectedIndex'], outputs: ['selectFocusedIndex', 'indexFocused'], encapsulation: ViewEncapsulation.None, changeDetection: ChangeDetectionStrategy.Default, host: {
                        'class': 'mat-mdc-tab-header',
                        '[class.mat-mdc-tab-header-pagination-controls-enabled]': '_showPaginationControls',
                        '[class.mat-mdc-tab-header-rtl]': "_getLayoutDirection() == 'rtl'",
                    }, template: "<!-- TODO: this also had `mat-elevation-z4`. Figure out what we should do with it. -->\n<button class=\"mat-mdc-tab-header-pagination mat-mdc-tab-header-pagination-before\"\n     #previousPaginator\n     aria-hidden=\"true\"\n     type=\"button\"\n     mat-ripple\n     tabindex=\"-1\"\n     [matRippleDisabled]=\"_disableScrollBefore || disableRipple\"\n     [class.mat-mdc-tab-header-pagination-disabled]=\"_disableScrollBefore\"\n     [disabled]=\"_disableScrollBefore || null\"\n     (click)=\"_handlePaginatorClick('before')\"\n     (mousedown)=\"_handlePaginatorPress('before', $event)\"\n     (touchend)=\"_stopInterval()\">\n  <div class=\"mat-mdc-tab-header-pagination-chevron\"></div>\n</button>\n\n<div\n  class=\"mat-mdc-tab-label-container\"\n  #tabListContainer\n  (keydown)=\"_handleKeydown($event)\"\n  [class._mat-animation-noopable]=\"_animationMode === 'NoopAnimations'\">\n  <div\n    #tabList\n    class=\"mat-mdc-tab-list\"\n    role=\"tablist\"\n    (cdkObserveContent)=\"_onContentChanges()\">\n    <div class=\"mat-mdc-tab-labels\" #tabListInner>\n      <ng-content></ng-content>\n    </div>\n  </div>\n</div>\n\n<!-- TODO: this also had `mat-elevation-z4`. Figure out what we should do with it. -->\n<button class=\"mat-mdc-tab-header-pagination mat-mdc-tab-header-pagination-after\"\n     #nextPaginator\n     aria-hidden=\"true\"\n     type=\"button\"\n     mat-ripple\n     [matRippleDisabled]=\"_disableScrollAfter || disableRipple\"\n     [class.mat-mdc-tab-header-pagination-disabled]=\"_disableScrollAfter\"\n     [disabled]=\"_disableScrollAfter || null\"\n     tabindex=\"-1\"\n     (mousedown)=\"_handlePaginatorPress('after', $event)\"\n     (click)=\"_handlePaginatorClick('after')\"\n     (touchend)=\"_stopInterval()\">\n  <div class=\"mat-mdc-tab-header-pagination-chevron\"></div>\n</button>\n", styles: [".mat-mdc-tab-header{display:flex;overflow:hidden;position:relative;flex-shrink:0;--mdc-tab-indicator-active-indicator-height:2px;--mdc-tab-indicator-active-indicator-shape:0;--mdc-secondary-navigation-tab-container-height:48px}.mat-mdc-tab-header-pagination{-webkit-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:rgba(0,0,0,0);touch-action:none;box-sizing:content-box;background:none;border:none;outline:0;padding:0}.mat-mdc-tab-header-pagination::-moz-focus-inner{border:0}.mat-mdc-tab-header-pagination .mat-ripple-element{opacity:.12;background-color:var(--mat-tab-header-inactive-ripple-color)}.mat-mdc-tab-header-pagination-controls-enabled .mat-mdc-tab-header-pagination{display:flex}.mat-mdc-tab-header-pagination-before,.mat-mdc-tab-header-rtl .mat-mdc-tab-header-pagination-after{padding-left:4px}.mat-mdc-tab-header-pagination-before .mat-mdc-tab-header-pagination-chevron,.mat-mdc-tab-header-rtl .mat-mdc-tab-header-pagination-after .mat-mdc-tab-header-pagination-chevron{transform:rotate(-135deg)}.mat-mdc-tab-header-rtl .mat-mdc-tab-header-pagination-before,.mat-mdc-tab-header-pagination-after{padding-right:4px}.mat-mdc-tab-header-rtl .mat-mdc-tab-header-pagination-before .mat-mdc-tab-header-pagination-chevron,.mat-mdc-tab-header-pagination-after .mat-mdc-tab-header-pagination-chevron{transform:rotate(45deg)}.mat-mdc-tab-header-pagination-chevron{border-style:solid;border-width:2px 2px 0 0;height:8px;width:8px;border-color:var(--mat-tab-header-pagination-icon-color)}.mat-mdc-tab-header-pagination-disabled{box-shadow:none;cursor:default;pointer-events:none}.mat-mdc-tab-header-pagination-disabled .mat-mdc-tab-header-pagination-chevron{opacity:.4}.mat-mdc-tab-list{flex-grow:1;position:relative;transition:transform 500ms cubic-bezier(0.35, 0, 0.25, 1)}._mat-animation-noopable .mat-mdc-tab-list{transition:none}._mat-animation-noopable span.mdc-tab-indicator__content,._mat-animation-noopable span.mdc-tab__text-label{transition:none}.mat-mdc-tab-label-container{display:flex;flex-grow:1;overflow:hidden;z-index:1}.mat-mdc-tab-labels{display:flex;flex:1 0 auto}[mat-align-tabs=center]>.mat-mdc-tab-header .mat-mdc-tab-labels{justify-content:center}[mat-align-tabs=end]>.mat-mdc-tab-header .mat-mdc-tab-labels{justify-content:flex-end}.mat-mdc-tab::before{margin:5px}.cdk-high-contrast-active .mat-mdc-tab[aria-disabled=true]{color:GrayText}"] }]
        }], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: i0.ChangeDetectorRef }, { type: i1$1.ViewportRuler }, { type: i1.Directionality, decorators: [{
                    type: Optional
                }] }, { type: i0.NgZone }, { type: i3.Platform }, { type: undefined, decorators: [{
                    type: Optional
                }, {
                    type: Inject,
                    args: [ANIMATION_MODULE_TYPE]
                }] }]; }, propDecorators: { _items: [{
                type: ContentChildren,
                args: [MatTabLabelWrapper, { descendants: false }]
            }], _tabListContainer: [{
                type: ViewChild,
                args: ['tabListContainer', { static: true }]
            }], _tabList: [{
                type: ViewChild,
                args: ['tabList', { static: true }]
            }], _tabListInner: [{
                type: ViewChild,
                args: ['tabListInner', { static: true }]
            }], _nextPaginator: [{
                type: ViewChild,
                args: ['nextPaginator']
            }], _previousPaginator: [{
                type: ViewChild,
                args: ['previousPaginator']
            }] } });

/** Injection token that can be used to provide the default options the tabs module. */
const MAT_TABS_CONFIG = new InjectionToken('MAT_TABS_CONFIG');

/** Used to generate unique ID's for each tab component */
let nextId = 0;
// Boilerplate for applying mixins to MatTabGroup.
/** @docs-private */
const _MatTabGroupMixinBase = mixinColor(mixinDisableRipple(class {
    constructor(_elementRef) {
        this._elementRef = _elementRef;
    }
}), 'primary');
/**
 * Base class with all of the `MatTabGroupBase` functionality.
 * @docs-private
 */
class _MatTabGroupBase extends _MatTabGroupMixinBase {
    /** Whether the tab group should grow to the size of the active tab. */
    get dynamicHeight() {
        return this._dynamicHeight;
    }
    set dynamicHeight(value) {
        this._dynamicHeight = coerceBooleanProperty(value);
    }
    /** The index of the active tab. */
    get selectedIndex() {
        return this._selectedIndex;
    }
    set selectedIndex(value) {
        this._indexToSelect = coerceNumberProperty(value, null);
    }
    /** Duration for the tab animation. Will be normalized to milliseconds if no units are set. */
    get animationDuration() {
        return this._animationDuration;
    }
    set animationDuration(value) {
        this._animationDuration = /^\d+$/.test(value + '') ? value + 'ms' : value;
    }
    /**
     * `tabindex` to be set on the inner element that wraps the tab content. Can be used for improved
     * accessibility when the tab does not have focusable elements or if it has scrollable content.
     * The `tabindex` will be removed automatically for inactive tabs.
     * Read more at https://www.w3.org/TR/wai-aria-practices/examples/tabs/tabs-2/tabs.html
     */
    get contentTabIndex() {
        return this._contentTabIndex;
    }
    set contentTabIndex(value) {
        this._contentTabIndex = coerceNumberProperty(value, null);
    }
    /**
     * Whether pagination should be disabled. This can be used to avoid unnecessary
     * layout recalculations if it's known that pagination won't be required.
     */
    get disablePagination() {
        return this._disablePagination;
    }
    set disablePagination(value) {
        this._disablePagination = coerceBooleanProperty(value);
    }
    /**
     * By default tabs remove their content from the DOM while it's off-screen.
     * Setting this to `true` will keep it in the DOM which will prevent elements
     * like iframes and videos from reloading next time it comes back into the view.
     */
    get preserveContent() {
        return this._preserveContent;
    }
    set preserveContent(value) {
        this._preserveContent = coerceBooleanProperty(value);
    }
    /** Background color of the tab group. */
    get backgroundColor() {
        return this._backgroundColor;
    }
    set backgroundColor(value) {
        const classList = this._elementRef.nativeElement.classList;
        classList.remove('mat-tabs-with-background', `mat-background-${this.backgroundColor}`);
        if (value) {
            classList.add('mat-tabs-with-background', `mat-background-${value}`);
        }
        this._backgroundColor = value;
    }
    constructor(elementRef, _changeDetectorRef, defaultConfig, _animationMode) {
        super(elementRef);
        this._changeDetectorRef = _changeDetectorRef;
        this._animationMode = _animationMode;
        /** All of the tabs that belong to the group. */
        this._tabs = new QueryList();
        /** The tab index that should be selected after the content has been checked. */
        this._indexToSelect = 0;
        /** Index of the tab that was focused last. */
        this._lastFocusedTabIndex = null;
        /** 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';
        this._disablePagination = false;
        this._preserveContent = false;
        /** 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';
        this.disablePagination =
            defaultConfig && defaultConfig.disablePagination != null
                ? defaultConfig.disablePagination
                : false;
        this.dynamicHeight =
            defaultConfig && defaultConfig.dynamicHeight != null ? defaultConfig.dynamicHeight : false;
        this.contentTabIndex = defaultConfig?.contentTabIndex ?? null;
        this.preserveContent = !!defaultConfig?.preserveContent;
    }
    /**
     * 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).
     */
    ngAfterContentChecked() {
        // 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.
        const 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) {
            const isFirstRun = this._selectedIndex == null;
            if (!isFirstRun) {
                this.selectedTabChange.emit(this._createChangeEvent(indexToSelect));
                // Preserve the height so page doesn't scroll up during tab change.
                // Fixes https://stackblitz.com/edit/mat-tabs-scroll-page-top-on-tab-change
                const wrapper = this._tabBodyWrapper.nativeElement;
                wrapper.style.minHeight = wrapper.clientHeight + 'px';
            }
            // Changing these values after change detection has run
            // since the checked content may contain references to them.
            Promise.resolve().then(() => {
                this._tabs.forEach((tab, index) => (tab.isActive = index === indexToSelect));
                if (!isFirstRun) {
                    this.selectedIndexChange.emit(indexToSelect);
                    // Clear the min-height, this was needed during tab change to avoid
                    // unnecessary scrolling.
                    this._tabBodyWrapper.nativeElement.style.minHeight = '';
                }
            });
        }
        // Setup the position for each tab and optionally setup an origin on the next selected tab.
        this._tabs.forEach((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._lastFocusedTabIndex = null;
            this._changeDetectorRef.markForCheck();
        }
    }
    ngAfterContentInit() {
        this._subscribeToAllTabChanges();
        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(() => {
            const 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) {
                const tabs = this._tabs.toArray();
                let selectedTab;
                for (let 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;
                        this._lastFocusedTabIndex = null;
                        selectedTab = tabs[i];
                        break;
                    }
                }
                // If we haven't found an active tab and a tab exists at the selected index, it means
                // that the active tab was swapped out. Since this won't be picked up by the rendering
                // loop in `ngAfterContentChecked`, we need to sync it up manually.
                if (!selectedTab && tabs[indexToSelect]) {
                    Promise.resolve().then(() => {
                        tabs[indexToSelect].isActive = true;
                        this.selectedTabChange.emit(this._createChangeEvent(indexToSelect));
                    });
                }
            }
            this._changeDetectorRef.markForCheck();
        });
    }
    /** Listens to changes in all of the tabs. */
    _subscribeToAllTabChanges() {
        // Since we use a query with `descendants: true` to pick up the tabs, we may end up catching
        // some that are inside of nested tab groups. We filter them out manually by checking that
        // the closest group to the tab is the current one.
        this._allTabs.changes.pipe(startWith(this._allTabs)).subscribe((tabs) => {
            this._tabs.reset(tabs.filter(tab => {
                return tab._closestTabGroup === this || !tab._closestTabGroup;
            }));
            this._tabs.notifyOnChanges();
        });
    }
    ngOnDestroy() {
        this._tabs.destroy();
        this._tabsSubscription.unsubscribe();
        this._tabLabelSubscription.unsubscribe();
    }
    /** Re-aligns the ink bar to the selected tab element. */
    realignInkBar() {
        if (this._tabHeader) {
            this._tabHeader._alignInkBarToSelectedTab();
        }
    }
    /**
     * Recalculates the tab group's pagination dimensions.
     *
     * 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.
     */
    updatePagination() {
        if (this._tabHeader) {
            this._tabHeader.updatePagination();
        }
    }
    /**
     * Sets focus to a particular tab.
     * @param index Index of the tab to be focused.
     */
    focusTab(index) {
        const header = this._tabHeader;
        if (header) {
            header.focusIndex = index;
        }
    }
    _focusChanged(index) {
        this._lastFocusedTabIndex = index;
        this.focusChange.emit(this._createChangeEvent(index));
    }
    _createChangeEvent(index) {
        const 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.
     */
    _subscribeToTabLabels() {
        if (this._tabLabelSubscription) {
            this._tabLabelSubscription.unsubscribe();
        }
        this._tabLabelSubscription = merge(...this._tabs.map(tab => tab._stateChanges)).subscribe(() => this._changeDetectorRef.markForCheck());
    }
    /** Clamps the given index to the bounds of 0 and the tabs length. */
    _clampTabIndex(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 */
    _getTabLabelId(i) {
        return `mat-tab-label-${this._groupId}-${i}`;
    }
    /** Returns a unique id for each tab content element */
    _getTabContentId(i) {
        return `mat-tab-content-${this._groupId}-${i}`;
    }
    /**
     * Sets the height of the body wrapper to the height of the activating tab if dynamic
     * height property is true.
     */
    _setTabBodyWrapperHeight(tabHeight) {
        if (!this._dynamicHeight || !this._tabBodyWrapperHeight) {
            return;
        }
        const 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. */
    _removeTabBodyWrapperHeight() {
        const wrapper = this._tabBodyWrapper.nativeElement;
        this._tabBodyWrapperHeight = wrapper.clientHeight;
        wrapper.style.height = '';
        this.animationDone.emit();
    }
    /** Handle click events, setting new selected index if appropriate. */
    _handleClick(tab, tabHeader, index) {
        tabHeader.focusIndex = index;
        if (!tab.disabled) {
            this.selectedIndex = index;
        }
    }
    /** Retrieves the tabindex for the tab. */
    _getTabIndex(index) {
        const targetIndex = this._lastFocusedTabIndex ?? this.selectedIndex;
        return index === targetIndex ? 0 : -1;
    }
    /** Callback for when the focused state of a tab has changed. */
    _tabFocusChanged(focusOrigin, index) {
        // Mouse/touch focus happens during the `mousedown`/`touchstart` phase which
        // can cause the tab to be moved out from under the pointer, interrupting the
        // click sequence (see #21898). We don't need to scroll the tab into view for
        // such cases anyway, because it will be done when the tab becomes selected.
        if (focusOrigin && focusOrigin !== 'mouse' && focusOrigin !== 'touch') {
            this._tabHeader.focusIndex = index;
        }
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: _MatTabGroupBase, deps: [{ token: i0.ElementRef }, { token: i0.ChangeDetectorRef }, { token: MAT_TABS_CONFIG, optional: true }, { token: ANIMATION_MODULE_TYPE, optional: true }], target: i0.ɵɵFactoryTarget.Directive }); }
    static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.0.0", type: _MatTabGroupBase, inputs: { dynamicHeight: "dynamicHeight", selectedIndex: "selectedIndex", headerPosition: "headerPosition", animationDuration: "animationDuration", contentTabIndex: "contentTabIndex", disablePagination: "disablePagination", preserveContent: "preserveContent", backgroundColor: "backgroundColor" }, outputs: { selectedIndexChange: "selectedIndexChange", focusChange: "focusChange", animationDone: "animationDone", selectedTabChange: "selectedTabChange" }, usesInheritance: true, ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: _MatTabGroupBase, decorators: [{
            type: Directive
        }], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: i0.ChangeDetectorRef }, { type: undefined, decorators: [{
                    type: Inject,
                    args: [MAT_TABS_CONFIG]
                }, {
                    type: Optional
                }] }, { type: undefined, decorators: [{
                    type: Optional
                }, {
                    type: Inject,
                    args: [ANIMATION_MODULE_TYPE]
                }] }]; }, propDecorators: { dynamicHeight: [{
                type: Input
            }], selectedIndex: [{
                type: Input
            }], headerPosition: [{
                type: Input
            }], animationDuration: [{
                type: Input
            }], contentTabIndex: [{
                type: Input
            }], disablePagination: [{
                type: Input
            }], preserveContent: [{
                type: Input
            }], backgroundColor: [{
                type: Input
            }], selectedIndexChange: [{
                type: Output
            }], focusChange: [{
                type: Output
            }], animationDone: [{
                type: Output
            }], selectedTabChange: [{
                type: Output
            }] } });
/**
 * 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
 */
class MatTabGroup extends _MatTabGroupBase {
    /** Whether the ink bar should fit its width to the size of the tab label content. */
    get fitInkBarToContent() {
        return this._fitInkBarToContent;
    }
    set fitInkBarToContent(v) {
        this._fitInkBarToContent = coerceBooleanProperty(v);
        this._changeDetectorRef.markForCheck();
    }
    /** Whether tabs should be stretched to fill the header. */
    get stretchTabs() {
        return this._stretchTabs;
    }
    set stretchTabs(v) {
        this._stretchTabs = coerceBooleanProperty(v);
    }
    constructor(elementRef, changeDetectorRef, defaultConfig, animationMode) {
        super(elementRef, changeDetectorRef, defaultConfig, animationMode);
        this._fitInkBarToContent = false;
        this._stretchTabs = true;
        this.fitInkBarToContent =
            defaultConfig && defaultConfig.fitInkBarToContent != null
                ? defaultConfig.fitInkBarToContent
                : false;
        this.stretchTabs =
            defaultConfig && defaultConfig.stretchTabs != null ? defaultConfig.stretchTabs : true;
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatTabGroup, deps: [{ token: i0.ElementRef }, { token: i0.ChangeDetectorRef }, { token: MAT_TABS_CONFIG, optional: true }, { token: ANIMATION_MODULE_TYPE, optional: true }], target: i0.ɵɵFactoryTarget.Component }); }
    static { this.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "16.0.0", type: MatTabGroup, selector: "mat-tab-group", inputs: { color: "color", disableRipple: "disableRipple", fitInkBarToContent: "fitInkBarToContent", stretchTabs: ["mat-stretch-tabs", "stretchTabs"] }, host: { attributes: { "ngSkipHydration": "" }, properties: { "class.mat-mdc-tab-group-dynamic-height": "dynamicHeight", "class.mat-mdc-tab-group-inverted-header": "headerPosition === \"below\"", "class.mat-mdc-tab-group-stretch-tabs": "stretchTabs" }, classAttribute: "mat-mdc-tab-group" }, providers: [
            {
                provide: MAT_TAB_GROUP,
                useExisting: MatTabGroup,
            },
        ], queries: [{ propertyName: "_allTabs", predicate: MatTab, descendants: true }], viewQueries: [{ propertyName: "_tabBodyWrapper", first: true, predicate: ["tabBodyWrapper"], descendants: true }, { propertyName: "_tabHeader", first: true, predicate: ["tabHeader"], descendants: true }], exportAs: ["matTabGroup"], usesInheritance: true, ngImport: i0, template: "<mat-tab-header #tabHeader\n                [selectedIndex]=\"selectedIndex || 0\"\n                [disableRipple]=\"disableRipple\"\n                [disablePagination]=\"disablePagination\"\n                (indexFocused)=\"_focusChanged($event)\"\n                (selectFocusedIndex)=\"selectedIndex = $event\">\n\n  <div class=\"mdc-tab mat-mdc-tab mat-mdc-focus-indicator\"\n       #tabNode\n       role=\"tab\"\n       matTabLabelWrapper\n       cdkMonitorElementFocus\n       *ngFor=\"let tab of _tabs; let i = index\"\n       [id]=\"_getTabLabelId(i)\"\n       [attr.tabIndex]=\"_getTabIndex(i)\"\n       [attr.aria-posinset]=\"i + 1\"\n       [attr.aria-setsize]=\"_tabs.length\"\n       [attr.aria-controls]=\"_getTabContentId(i)\"\n       [attr.aria-selected]=\"selectedIndex === i\"\n       [attr.aria-label]=\"tab.ariaLabel || null\"\n       [attr.aria-labelledby]=\"(!tab.ariaLabel && tab.ariaLabelledby) ? tab.ariaLabelledby : null\"\n       [class.mdc-tab--active]=\"selectedIndex === i\"\n       [ngClass]=\"tab.labelClass\"\n       [disabled]=\"tab.disabled\"\n       [fitInkBarToContent]=\"fitInkBarToContent\"\n       (click)=\"_handleClick(tab, tabHeader, i)\"\n       (cdkFocusChange)=\"_tabFocusChanged($event, i)\">\n    <span class=\"mdc-tab__ripple\"></span>\n\n    <!-- Needs to be a separate element, because we can't put\n         `overflow: hidden` on tab due to the ink bar. -->\n    <div\n      class=\"mat-mdc-tab-ripple\"\n      mat-ripple\n      [matRippleTrigger]=\"tabNode\"\n      [matRippleDisabled]=\"tab.disabled || disableRipple\"></div>\n\n    <span class=\"mdc-tab__content\">\n      <span class=\"mdc-tab__text-label\">\n        <!-- If there is a label template, use it. -->\n        <ng-template [ngIf]=\"tab.templateLabel\" [ngIfElse]=\"tabTextLabel\">\n          <ng-template [cdkPortalOutlet]=\"tab.templateLabel\"></ng-template>\n        </ng-template>\n\n        <!-- If there is not a label template, fall back to the text label. -->\n        <ng-template #tabTextLabel>{{tab.textLabel}}</ng-template>\n      </span>\n    </span>\n  </div>\n</mat-tab-header>\n\n<div\n  class=\"mat-mdc-tab-body-wrapper\"\n  [class._mat-animation-noopable]=\"_animationMode === 'NoopAnimations'\"\n  #tabBodyWrapper>\n  <mat-tab-body role=\"tabpanel\"\n               *ngFor=\"let tab of _tabs; let i = index\"\n               [id]=\"_getTabContentId(i)\"\n               [attr.tabindex]=\"(contentTabIndex != null && selectedIndex === i) ? contentTabIndex : null\"\n               [attr.aria-labelledby]=\"_getTabLabelId(i)\"\n               [class.mat-mdc-tab-body-active]=\"selectedIndex === i\"\n               [ngClass]=\"tab.bodyClass\"\n               [content]=\"tab.content!\"\n               [position]=\"tab.position!\"\n               [origin]=\"tab.origin\"\n               [animationDuration]=\"animationDuration\"\n               [preserveContent]=\"preserveContent\"\n               (_onCentered)=\"_removeTabBodyWrapperHeight()\"\n               (_onCentering)=\"_setTabBodyWrapperHeight($event)\">\n  </mat-tab-body>\n</div>\n", styles: [".mdc-tab{min-width:90px;padding-right:24px;padding-left:24px;display:flex;flex:1 0 auto;justify-content:center;box-sizing:border-box;margin:0;padding-top:0;padding-bottom:0;border:none;outline:none;text-align:center;white-space:nowrap;cursor:pointer;-webkit-appearance:none;z-index:1}.mdc-tab::-moz-focus-inner{padding:0;border:0}.mdc-tab[hidden]{display:none}.mdc-tab--min-width{flex:0 1 auto}.mdc-tab__content{display:flex;align-items:center;justify-content:center;height:inherit;pointer-events:none}.mdc-tab__text-label{transition:150ms color linear;display:inline-block;line-height:1;z-index:2}.mdc-tab__icon{transition:150ms color linear;z-index:2}.mdc-tab--stacked .mdc-tab__content{flex-direction:column;align-items:center;justify-content:center}.mdc-tab--stacked .mdc-tab__text-label{padding-top:6px;padding-bottom:4px}.mdc-tab--active .mdc-tab__text-label,.mdc-tab--active .mdc-tab__icon{transition-delay:100ms}.mdc-tab:not(.mdc-tab--stacked) .mdc-tab__icon+.mdc-tab__text-label{padding-left:8px;padding-right:0}[dir=rtl] .mdc-tab:not(.mdc-tab--stacked) .mdc-tab__icon+.mdc-tab__text-label,.mdc-tab:not(.mdc-tab--stacked) .mdc-tab__icon+.mdc-tab__text-label[dir=rtl]{padding-left:0;padding-right:8px}.mdc-tab-indicator{display:flex;position:absolute;top:0;left:0;justify-content:center;width:100%;height:100%;pointer-events:none;z-index:1}.mdc-tab-indicator__content{transform-origin:left;opacity:0}.mdc-tab-indicator__content--underline{align-self:flex-end;box-sizing:border-box;width:100%;border-top-style:solid}.mdc-tab-indicator__content--icon{align-self:center;margin:0 auto}.mdc-tab-indicator--active .mdc-tab-indicator__content{opacity:1}.mdc-tab-indicator .mdc-tab-indicator__content{transition:250ms transform cubic-bezier(0.4, 0, 0.2, 1)}.mdc-tab-indicator--no-transition .mdc-tab-indicator__content{transition:none}.mdc-tab-indicator--fade .mdc-tab-indicator__content{transition:150ms opacity linear}.mdc-tab-indicator--active.mdc-tab-indicator--fade .mdc-tab-indicator__content{transition-delay:100ms}.mat-mdc-tab-ripple{position:absolute;top:0;left:0;bottom:0;right:0;pointer-events:none}.mat-mdc-tab{-webkit-tap-highlight-color:rgba(0,0,0,0);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-decoration:none;background:none;font-family:var(--mat-tab-header-label-text-font);font-size:var(--mat-tab-header-label-text-size);letter-spacing:var(--mat-tab-header-label-text-letter-spacing);line-height:var(--mat-tab-header-label-text-line-height);font-weight:var(--mat-tab-header-label-text-weight)}.mat-mdc-tab .mdc-tab-indicator__content--underline{border-color:var(--mdc-tab-indicator-active-indicator-color)}.mat-mdc-tab .mdc-tab-indicator__content--underline{border-top-width:var(--mdc-tab-indicator-active-indicator-height)}.mat-mdc-tab .mdc-tab-indicator__content--underline{border-radius:var(--mdc-tab-indicator-active-indicator-shape)}.mat-mdc-tab:not(.mdc-tab--stacked){height:var(--mdc-secondary-navigation-tab-container-height)}.mat-mdc-tab:not(:disabled).mdc-tab--active .mdc-tab__icon{fill:currentColor}.mat-mdc-tab:not(:disabled):hover.mdc-tab--active .mdc-tab__icon{fill:currentColor}.mat-mdc-tab:not(:disabled):focus.mdc-tab--active .mdc-tab__icon{fill:currentColor}.mat-mdc-tab:not(:disabled):active.mdc-tab--active .mdc-tab__icon{fill:currentColor}.mat-mdc-tab:disabled.mdc-tab--active .mdc-tab__icon{fill:currentColor}.mat-mdc-tab:not(:disabled):not(.mdc-tab--active) .mdc-tab__icon{fill:currentColor}.mat-mdc-tab:not(:disabled):hover:not(.mdc-tab--active) .mdc-tab__icon{fill:currentColor}.mat-mdc-tab:not(:disabled):focus:not(.mdc-tab--active) .mdc-tab__icon{fill:currentColor}.mat-mdc-tab:not(:disabled):active:not(.mdc-tab--active) .mdc-tab__icon{fill:currentColor}.mat-mdc-tab:disabled:not(.mdc-tab--active) .mdc-tab__icon{fill:currentColor}.mat-mdc-tab.mdc-tab{flex-grow:0}.mat-mdc-tab:hover .mdc-tab__text-label{color:var(--mat-tab-header-inactive-hover-label-text-color)}.mat-mdc-tab:focus .mdc-tab__text-label{color:var(--mat-tab-header-inactive-focus-label-text-color)}.mat-mdc-tab.mdc-tab--active .mdc-tab__text-label{color:var(--mat-tab-header-active-label-text-color)}.mat-mdc-tab.mdc-tab--active .mdc-tab__ripple::before,.mat-mdc-tab.mdc-tab--active .mat-ripple-element{background-color:var(--mat-tab-header-active-ripple-color)}.mat-mdc-tab.mdc-tab--active:hover .mdc-tab__text-label{color:var(--mat-tab-header-active-hover-label-text-color)}.mat-mdc-tab.mdc-tab--active:hover .mdc-tab-indicator__content--underline{border-color:var(--mat-tab-header-active-hover-indicator-color)}.mat-mdc-tab.mdc-tab--active:focus .mdc-tab__text-label{color:var(--mat-tab-header-active-focus-label-text-color)}.mat-mdc-tab.mdc-tab--active:focus .mdc-tab-indicator__content--underline{border-color:var(--mat-tab-header-active-focus-indicator-color)}.mat-mdc-tab.mat-mdc-tab-disabled{opacity:.4;pointer-events:none}.mat-mdc-tab.mat-mdc-tab-disabled .mdc-tab__content{pointer-events:none}.mat-mdc-tab.mat-mdc-tab-disabled .mdc-tab__ripple::before,.mat-mdc-tab.mat-mdc-tab-disabled .mat-ripple-element{background-color:var(--mat-tab-header-disabled-ripple-color)}.mat-mdc-tab .mdc-tab__ripple::before{content:\"\";display:block;position:absolute;top:0;left:0;right:0;bottom:0;opacity:0;pointer-events:none;background-color:var(--mat-tab-header-inactive-ripple-color)}.mat-mdc-tab .mdc-tab__text-label{color:var(--mat-tab-header-inactive-label-text-color);display:inline-flex;align-items:center}.mat-mdc-tab .mdc-tab__content{position:relative;pointer-events:auto}.mat-mdc-tab:hover .mdc-tab__ripple::before{opacity:.04}.mat-mdc-tab.cdk-program-focused .mdc-tab__ripple::before,.mat-mdc-tab.cdk-keyboard-focused .mdc-tab__ripple::before{opacity:.12}.mat-mdc-tab .mat-ripple-element{opacity:.12;background-color:var(--mat-tab-header-inactive-ripple-color)}.mat-mdc-tab-group.mat-mdc-tab-group-stretch-tabs>.mat-mdc-tab-header .mat-mdc-tab{flex-grow:1}.mat-mdc-tab-group{display:flex;flex-direction:column;max-width:100%}.mat-mdc-tab-group.mat-tabs-with-background>.mat-mdc-tab-header,.mat-mdc-tab-group.mat-tabs-with-background>.mat-mdc-tab-header-pagination{background-color:var(--mat-tab-header-with-background-background-color)}.mat-mdc-tab-group.mat-tabs-with-background.mat-primary>.mat-mdc-tab-header .mat-mdc-tab .mdc-tab__text-label{color:var(--mat-tab-header-with-background-foreground-color)}.mat-mdc-tab-group.mat-tabs-with-background.mat-primary>.mat-mdc-tab-header .mdc-tab-indicator__content--underline{border-color:var(--mat-tab-header-with-background-foreground-color)}.mat-mdc-tab-group.mat-tabs-with-background:not(.mat-primary)>.mat-mdc-tab-header .mat-mdc-tab:not(.mdc-tab--active) .mdc-tab__text-label{color:var(--mat-tab-header-with-background-foreground-color)}.mat-mdc-tab-group.mat-tabs-with-background:not(.mat-primary)>.mat-mdc-tab-header .mat-mdc-tab:not(.mdc-tab--active) .mdc-tab-indicator__content--underline{border-color:var(--mat-tab-header-with-background-foreground-color)}.mat-mdc-tab-group.mat-tabs-with-background>.mat-mdc-tab-header .mat-mdc-tab-header-pagination-chevron,.mat-mdc-tab-group.mat-tabs-with-background>.mat-mdc-tab-header .mat-mdc-focus-indicator::before,.mat-mdc-tab-group.mat-tabs-with-background>.mat-mdc-tab-header-pagination .mat-mdc-tab-header-pagination-chevron,.mat-mdc-tab-group.mat-tabs-with-background>.mat-mdc-tab-header-pagination .mat-mdc-focus-indicator::before{border-color:var(--mat-tab-header-with-background-foreground-color)}.mat-mdc-tab-group.mat-tabs-with-background>.mat-mdc-tab-header .mat-ripple-element,.mat-mdc-tab-group.mat-tabs-with-background>.mat-mdc-tab-header .mdc-tab__ripple::before,.mat-mdc-tab-group.mat-tabs-with-background>.mat-mdc-tab-header-pagination .mat-ripple-element,.mat-mdc-tab-group.mat-tabs-with-background>.mat-mdc-tab-header-pagination .mdc-tab__ripple::before{background-color:var(--mat-tab-header-with-background-foreground-color)}.mat-mdc-tab-group.mat-tabs-with-background>.mat-mdc-tab-header .mat-mdc-tab-header-pagination-chevron,.mat-mdc-tab-group.mat-tabs-with-background>.mat-mdc-tab-header-pagination .mat-mdc-tab-header-pagination-chevron{color:var(--mat-tab-header-with-background-foreground-color)}.mat-mdc-tab-group.mat-mdc-tab-group-inverted-header{flex-direction:column-reverse}.mat-mdc-tab-group.mat-mdc-tab-group-inverted-header .mdc-tab-indicator__content--underline{align-self:flex-start}.mat-mdc-tab-body-wrapper{position:relative;overflow:hidden;display:flex;transition:height 500ms cubic-bezier(0.35, 0, 0.25, 1)}.mat-mdc-tab-body-wrapper._mat-animation-noopable{transition:none !important;animation:none !important}"], dependencies: [{ kind: "directive", type: i1$2.NgClass, selector: "[ngClass]", inputs: ["class", "ngClass"] }, { kind: "directive", type: i1$2.NgForOf, selector: "[ngFor][ngForOf]", inputs: ["ngForOf", "ngForTrackBy", "ngForTemplate"] }, { kind: "directive", type: i1$2.NgIf, selector: "[ngIf]", inputs: ["ngIf", "ngIfThen", "ngIfElse"] }, { kind: "directive", type: i2.CdkPortalOutlet, selector: "[cdkPortalOutlet]", inputs: ["cdkPortalOutlet"], outputs: ["attached"], exportAs: ["cdkPortalOutlet"] }, { kind: "directive", type: i5.MatRipple, selector: "[mat-ripple], [matRipple]", inputs: ["matRippleColor", "matRippleUnbounded", "matRippleCentered", "matRippleRadius", "matRippleAnimation", "matRippleDisabled", "matRippleTrigger"], exportAs: ["matRipple"] }, { kind: "directive", type: i4.CdkMonitorFocus, selector: "[cdkMonitorElementFocus], [cdkMonitorSubtreeFocus]", outputs: ["cdkFocusChange"], exportAs: ["cdkMonitorFocus"] }, { kind: "component", type: MatTabBody, selector: "mat-tab-body" }, { kind: "directive", type: MatTabLabelWrapper, selector: "[matTabLabelWrapper]", inputs: ["disabled", "fitInkBarToContent"] }, { kind: "component", type: MatTabHeader, selector: "mat-tab-header", inputs: ["selectedIndex"], outputs: ["selectFocusedIndex", "indexFocused"] }], changeDetection: i0.ChangeDetectionStrategy.Default, encapsulation: i0.ViewEncapsulation.None }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatTabGroup, decorators: [{
            type: Component,
            args: [{ selector: 'mat-tab-group', exportAs: 'matTabGroup', encapsulation: ViewEncapsulation.None, changeDetection: ChangeDetectionStrategy.Default, inputs: ['color', 'disableRipple'], providers: [
                        {
                            provide: MAT_TAB_GROUP,
                            useExisting: MatTabGroup,
                        },
                    ], host: {
                        'ngSkipHydration': '',
                        'class': 'mat-mdc-tab-group',
                        '[class.mat-mdc-tab-group-dynamic-height]': 'dynamicHeight',
                        '[class.mat-mdc-tab-group-inverted-header]': 'headerPosition === "below"',
                        '[class.mat-mdc-tab-group-stretch-tabs]': 'stretchTabs',
                    }, template: "<mat-tab-header #tabHeader\n                [selectedIndex]=\"selectedIndex || 0\"\n                [disableRipple]=\"disableRipple\"\n                [disablePagination]=\"disablePagination\"\n                (indexFocused)=\"_focusChanged($event)\"\n                (selectFocusedIndex)=\"selectedIndex = $event\">\n\n  <div class=\"mdc-tab mat-mdc-tab mat-mdc-focus-indicator\"\n       #tabNode\n       role=\"tab\"\n       matTabLabelWrapper\n       cdkMonitorElementFocus\n       *ngFor=\"let tab of _tabs; let i = index\"\n       [id]=\"_getTabLabelId(i)\"\n       [attr.tabIndex]=\"_getTabIndex(i)\"\n       [attr.aria-posinset]=\"i + 1\"\n       [attr.aria-setsize]=\"_tabs.length\"\n       [attr.aria-controls]=\"_getTabContentId(i)\"\n       [attr.aria-selected]=\"selectedIndex === i\"\n       [attr.aria-label]=\"tab.ariaLabel || null\"\n       [attr.aria-labelledby]=\"(!tab.ariaLabel && tab.ariaLabelledby) ? tab.ariaLabelledby : null\"\n       [class.mdc-tab--active]=\"selectedIndex === i\"\n       [ngClass]=\"tab.labelClass\"\n       [disabled]=\"tab.disabled\"\n       [fitInkBarToContent]=\"fitInkBarToContent\"\n       (click)=\"_handleClick(tab, tabHeader, i)\"\n       (cdkFocusChange)=\"_tabFocusChanged($event, i)\">\n    <span class=\"mdc-tab__ripple\"></span>\n\n    <!-- Needs to be a separate element, because we can't put\n         `overflow: hidden` on tab due to the ink bar. -->\n    <div\n      class=\"mat-mdc-tab-ripple\"\n      mat-ripple\n      [matRippleTrigger]=\"tabNode\"\n      [matRippleDisabled]=\"tab.disabled || disableRipple\"></div>\n\n    <span class=\"mdc-tab__content\">\n      <span class=\"mdc-tab__text-label\">\n        <!-- If there is a label template, use it. -->\n        <ng-template [ngIf]=\"tab.templateLabel\" [ngIfElse]=\"tabTextLabel\">\n          <ng-template [cdkPortalOutlet]=\"tab.templateLabel\"></ng-template>\n        </ng-template>\n\n        <!-- If there is not a label template, fall back to the text label. -->\n        <ng-template #tabTextLabel>{{tab.textLabel}}</ng-template>\n      </span>\n    </span>\n  </div>\n</mat-tab-header>\n\n<div\n  class=\"mat-mdc-tab-body-wrapper\"\n  [class._mat-animation-noopable]=\"_animationMode === 'NoopAnimations'\"\n  #tabBodyWrapper>\n  <mat-tab-body role=\"tabpanel\"\n               *ngFor=\"let tab of _tabs; let i = index\"\n               [id]=\"_getTabContentId(i)\"\n               [attr.tabindex]=\"(contentTabIndex != null && selectedIndex === i) ? contentTabIndex : null\"\n               [attr.aria-labelledby]=\"_getTabLabelId(i)\"\n               [class.mat-mdc-tab-body-active]=\"selectedIndex === i\"\n               [ngClass]=\"tab.bodyClass\"\n               [content]=\"tab.content!\"\n               [position]=\"tab.position!\"\n               [origin]=\"tab.origin\"\n               [animationDuration]=\"animationDuration\"\n               [preserveContent]=\"preserveContent\"\n               (_onCentered)=\"_removeTabBodyWrapperHeight()\"\n               (_onCentering)=\"_setTabBodyWrapperHeight($event)\">\n  </mat-tab-body>\n</div>\n", styles: [".mdc-tab{min-width:90px;padding-right:24px;padding-left:24px;display:flex;flex:1 0 auto;justify-content:center;box-sizing:border-box;margin:0;padding-top:0;padding-bottom:0;border:none;outline:none;text-align:center;white-space:nowrap;cursor:pointer;-webkit-appearance:none;z-index:1}.mdc-tab::-moz-focus-inner{padding:0;border:0}.mdc-tab[hidden]{display:none}.mdc-tab--min-width{flex:0 1 auto}.mdc-tab__content{display:flex;align-items:center;justify-content:center;height:inherit;pointer-events:none}.mdc-tab__text-label{transition:150ms color linear;display:inline-block;line-height:1;z-index:2}.mdc-tab__icon{transition:150ms color linear;z-index:2}.mdc-tab--stacked .mdc-tab__content{flex-direction:column;align-items:center;justify-content:center}.mdc-tab--stacked .mdc-tab__text-label{padding-top:6px;padding-bottom:4px}.mdc-tab--active .mdc-tab__text-label,.mdc-tab--active .mdc-tab__icon{transition-delay:100ms}.mdc-tab:not(.mdc-tab--stacked) .mdc-tab__icon+.mdc-tab__text-label{padding-left:8px;padding-right:0}[dir=rtl] .mdc-tab:not(.mdc-tab--stacked) .mdc-tab__icon+.mdc-tab__text-label,.mdc-tab:not(.mdc-tab--stacked) .mdc-tab__icon+.mdc-tab__text-label[dir=rtl]{padding-left:0;padding-right:8px}.mdc-tab-indicator{display:flex;position:absolute;top:0;left:0;justify-content:center;width:100%;height:100%;pointer-events:none;z-index:1}.mdc-tab-indicator__content{transform-origin:left;opacity:0}.mdc-tab-indicator__content--underline{align-self:flex-end;box-sizing:border-box;width:100%;border-top-style:solid}.mdc-tab-indicator__content--icon{align-self:center;margin:0 auto}.mdc-tab-indicator--active .mdc-tab-indicator__content{opacity:1}.mdc-tab-indicator .mdc-tab-indicator__content{transition:250ms transform cubic-bezier(0.4, 0, 0.2, 1)}.mdc-tab-indicator--no-transition .mdc-tab-indicator__content{transition:none}.mdc-tab-indicator--fade .mdc-tab-indicator__content{transition:150ms opacity linear}.mdc-tab-indicator--active.mdc-tab-indicator--fade .mdc-tab-indicator__content{transition-delay:100ms}.mat-mdc-tab-ripple{position:absolute;top:0;left:0;bottom:0;right:0;pointer-events:none}.mat-mdc-tab{-webkit-tap-highlight-color:rgba(0,0,0,0);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-decoration:none;background:none;font-family:var(--mat-tab-header-label-text-font);font-size:var(--mat-tab-header-label-text-size);letter-spacing:var(--mat-tab-header-label-text-letter-spacing);line-height:var(--mat-tab-header-label-text-line-height);font-weight:var(--mat-tab-header-label-text-weight)}.mat-mdc-tab .mdc-tab-indicator__content--underline{border-color:var(--mdc-tab-indicator-active-indicator-color)}.mat-mdc-tab .mdc-tab-indicator__content--underline{border-top-width:var(--mdc-tab-indicator-active-indicator-height)}.mat-mdc-tab .mdc-tab-indicator__content--underline{border-radius:var(--mdc-tab-indicator-active-indicator-shape)}.mat-mdc-tab:not(.mdc-tab--stacked){height:var(--mdc-secondary-navigation-tab-container-height)}.mat-mdc-tab:not(:disabled).mdc-tab--active .mdc-tab__icon{fill:currentColor}.mat-mdc-tab:not(:disabled):hover.mdc-tab--active .mdc-tab__icon{fill:currentColor}.mat-mdc-tab:not(:disabled):focus.mdc-tab--active .mdc-tab__icon{fill:currentColor}.mat-mdc-tab:not(:disabled):active.mdc-tab--active .mdc-tab__icon{fill:currentColor}.mat-mdc-tab:disabled.mdc-tab--active .mdc-tab__icon{fill:currentColor}.mat-mdc-tab:not(:disabled):not(.mdc-tab--active) .mdc-tab__icon{fill:currentColor}.mat-mdc-tab:not(:disabled):hover:not(.mdc-tab--active) .mdc-tab__icon{fill:currentColor}.mat-mdc-tab:not(:disabled):focus:not(.mdc-tab--active) .mdc-tab__icon{fill:currentColor}.mat-mdc-tab:not(:disabled):active:not(.mdc-tab--active) .mdc-tab__icon{fill:currentColor}.mat-mdc-tab:disabled:not(.mdc-tab--active) .mdc-tab__icon{fill:currentColor}.mat-mdc-tab.mdc-tab{flex-grow:0}.mat-mdc-tab:hover .mdc-tab__text-label{color:var(--mat-tab-header-inactive-hover-label-text-color)}.mat-mdc-tab:focus .mdc-tab__text-label{color:var(--mat-tab-header-inactive-focus-label-text-color)}.mat-mdc-tab.mdc-tab--active .mdc-tab__text-label{color:var(--mat-tab-header-active-label-text-color)}.mat-mdc-tab.mdc-tab--active .mdc-tab__ripple::before,.mat-mdc-tab.mdc-tab--active .mat-ripple-element{background-color:var(--mat-tab-header-active-ripple-color)}.mat-mdc-tab.mdc-tab--active:hover .mdc-tab__text-label{color:var(--mat-tab-header-active-hover-label-text-color)}.mat-mdc-tab.mdc-tab--active:hover .mdc-tab-indicator__content--underline{border-color:var(--mat-tab-header-active-hover-indicator-color)}.mat-mdc-tab.mdc-tab--active:focus .mdc-tab__text-label{color:var(--mat-tab-header-active-focus-label-text-color)}.mat-mdc-tab.mdc-tab--active:focus .mdc-tab-indicator__content--underline{border-color:var(--mat-tab-header-active-focus-indicator-color)}.mat-mdc-tab.mat-mdc-tab-disabled{opacity:.4;pointer-events:none}.mat-mdc-tab.mat-mdc-tab-disabled .mdc-tab__content{pointer-events:none}.mat-mdc-tab.mat-mdc-tab-disabled .mdc-tab__ripple::before,.mat-mdc-tab.mat-mdc-tab-disabled .mat-ripple-element{background-color:var(--mat-tab-header-disabled-ripple-color)}.mat-mdc-tab .mdc-tab__ripple::before{content:\"\";display:block;position:absolute;top:0;left:0;right:0;bottom:0;opacity:0;pointer-events:none;background-color:var(--mat-tab-header-inactive-ripple-color)}.mat-mdc-tab .mdc-tab__text-label{color:var(--mat-tab-header-inactive-label-text-color);display:inline-flex;align-items:center}.mat-mdc-tab .mdc-tab__content{position:relative;pointer-events:auto}.mat-mdc-tab:hover .mdc-tab__ripple::before{opacity:.04}.mat-mdc-tab.cdk-program-focused .mdc-tab__ripple::before,.mat-mdc-tab.cdk-keyboard-focused .mdc-tab__ripple::before{opacity:.12}.mat-mdc-tab .mat-ripple-element{opacity:.12;background-color:var(--mat-tab-header-inactive-ripple-color)}.mat-mdc-tab-group.mat-mdc-tab-group-stretch-tabs>.mat-mdc-tab-header .mat-mdc-tab{flex-grow:1}.mat-mdc-tab-group{display:flex;flex-direction:column;max-width:100%}.mat-mdc-tab-group.mat-tabs-with-background>.mat-mdc-tab-header,.mat-mdc-tab-group.mat-tabs-with-background>.mat-mdc-tab-header-pagination{background-color:var(--mat-tab-header-with-background-background-color)}.mat-mdc-tab-group.mat-tabs-with-background.mat-primary>.mat-mdc-tab-header .mat-mdc-tab .mdc-tab__text-label{color:var(--mat-tab-header-with-background-foreground-color)}.mat-mdc-tab-group.mat-tabs-with-background.mat-primary>.mat-mdc-tab-header .mdc-tab-indicator__content--underline{border-color:var(--mat-tab-header-with-background-foreground-color)}.mat-mdc-tab-group.mat-tabs-with-background:not(.mat-primary)>.mat-mdc-tab-header .mat-mdc-tab:not(.mdc-tab--active) .mdc-tab__text-label{color:var(--mat-tab-header-with-background-foreground-color)}.mat-mdc-tab-group.mat-tabs-with-background:not(.mat-primary)>.mat-mdc-tab-header .mat-mdc-tab:not(.mdc-tab--active) .mdc-tab-indicator__content--underline{border-color:var(--mat-tab-header-with-background-foreground-color)}.mat-mdc-tab-group.mat-tabs-with-background>.mat-mdc-tab-header .mat-mdc-tab-header-pagination-chevron,.mat-mdc-tab-group.mat-tabs-with-background>.mat-mdc-tab-header .mat-mdc-focus-indicator::before,.mat-mdc-tab-group.mat-tabs-with-background>.mat-mdc-tab-header-pagination .mat-mdc-tab-header-pagination-chevron,.mat-mdc-tab-group.mat-tabs-with-background>.mat-mdc-tab-header-pagination .mat-mdc-focus-indicator::before{border-color:var(--mat-tab-header-with-background-foreground-color)}.mat-mdc-tab-group.mat-tabs-with-background>.mat-mdc-tab-header .mat-ripple-element,.mat-mdc-tab-group.mat-tabs-with-background>.mat-mdc-tab-header .mdc-tab__ripple::before,.mat-mdc-tab-group.mat-tabs-with-background>.mat-mdc-tab-header-pagination .mat-ripple-element,.mat-mdc-tab-group.mat-tabs-with-background>.mat-mdc-tab-header-pagination .mdc-tab__ripple::before{background-color:var(--mat-tab-header-with-background-foreground-color)}.mat-mdc-tab-group.mat-tabs-with-background>.mat-mdc-tab-header .mat-mdc-tab-header-pagination-chevron,.mat-mdc-tab-group.mat-tabs-with-background>.mat-mdc-tab-header-pagination .mat-mdc-tab-header-pagination-chevron{color:var(--mat-tab-header-with-background-foreground-color)}.mat-mdc-tab-group.mat-mdc-tab-group-inverted-header{flex-direction:column-reverse}.mat-mdc-tab-group.mat-mdc-tab-group-inverted-header .mdc-tab-indicator__content--underline{align-self:flex-start}.mat-mdc-tab-body-wrapper{position:relative;overflow:hidden;display:flex;transition:height 500ms cubic-bezier(0.35, 0, 0.25, 1)}.mat-mdc-tab-body-wrapper._mat-animation-noopable{transition:none !important;animation:none !important}"] }]
        }], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: i0.ChangeDetectorRef }, { type: undefined, decorators: [{
                    type: Inject,
                    args: [MAT_TABS_CONFIG]
                }, {
                    type: Optional
                }] }, { type: undefined, decorators: [{
                    type: Optional
                }, {
                    type: Inject,
                    args: [ANIMATION_MODULE_TYPE]
                }] }]; }, propDecorators: { _allTabs: [{
                type: ContentChildren,
                args: [MatTab, { descendants: true }]
            }], _tabBodyWrapper: [{
                type: ViewChild,
                args: ['tabBodyWrapper']
            }], _tabHeader: [{
                type: ViewChild,
                args: ['tabHeader']
            }], fitInkBarToContent: [{
                type: Input
            }], stretchTabs: [{
                type: Input,
                args: ['mat-stretch-tabs']
            }] } });
/** A simple change event emitted on focus or selection changes. */
class MatTabChangeEvent {
}

// Increasing integer for generating unique ids for tab nav components.
let nextUniqueId = 0;
/**
 * Base class with all of the `MatTabNav` functionality.
 * @docs-private
 */
class _MatTabNavBase extends MatPaginatedTabHeader {
    /** Background color of the tab nav. */
    get backgroundColor() {
        return this._backgroundColor;
    }
    set backgroundColor(value) {
        const classList = this._elementRef.nativeElement.classList;
        classList.remove('mat-tabs-with-background', `mat-background-${this.backgroundColor}`);
        if (value) {
            classList.add('mat-tabs-with-background', `mat-background-${value}`);
        }
        this._backgroundColor = value;
    }
    /** Whether the ripple effect is disabled or not. */
    get disableRipple() {
        return this._disableRipple;
    }
    set disableRipple(value) {
        this._disableRipple = coerceBooleanProperty(value);
    }
    constructor(elementRef, dir, ngZone, changeDetectorRef, viewportRuler, platform, animationMode) {
        super(elementRef, changeDetectorRef, viewportRuler, dir, ngZone, platform, animationMode);
        this._disableRipple = false;
        /** Theme color of the nav bar. */
        this.color = 'primary';
    }
    _itemSelected() {
        // noop
    }
    ngAfterContentInit() {
        // We need this to run before the `changes` subscription in parent to ensure that the
        // selectedIndex is up-to-date by the time the super class starts looking for it.
        this._items.changes.pipe(startWith(null), takeUntil(this._destroyed)).subscribe(() => {
            this.updateActiveLink();
        });
        super.ngAfterContentInit();
    }
    /** Notifies the component that the active link has been changed. */
    updateActiveLink() {
        if (!this._items) {
            return;
        }
        const items = this._items.toArray();
        for (let i = 0; i < items.length; i++) {
            if (items[i].active) {
                this.selectedIndex = i;
                this._changeDetectorRef.markForCheck();
                if (this.tabPanel) {
                    this.tabPanel._activeTabId = items[i].id;
                }
                return;
            }
        }
        // The ink bar should hide itself if no items are active.
        this.selectedIndex = -1;
        this._inkBar.hide();
    }
    _getRole() {
        return this.tabPanel ? 'tablist' : this._elementRef.nativeElement.getAttribute('role');
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: _MatTabNavBase, deps: [{ token: i0.ElementRef }, { token: i1.Directionality, optional: true }, { token: i0.NgZone }, { token: i0.ChangeDetectorRef }, { token: i1$1.ViewportRuler }, { token: i3.Platform }, { token: ANIMATION_MODULE_TYPE, optional: true }], target: i0.ɵɵFactoryTarget.Directive }); }
    static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.0.0", type: _MatTabNavBase, inputs: { backgroundColor: "backgroundColor", disableRipple: "disableRipple", color: "color", tabPanel: "tabPanel" }, usesInheritance: true, ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: _MatTabNavBase, decorators: [{
            type: Directive
        }], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: i1.Directionality, decorators: [{
                    type: Optional
                }] }, { type: i0.NgZone }, { type: i0.ChangeDetectorRef }, { type: i1$1.ViewportRuler }, { type: i3.Platform }, { type: undefined, decorators: [{
                    type: Optional
                }, {
                    type: Inject,
                    args: [ANIMATION_MODULE_TYPE]
                }] }]; }, propDecorators: { backgroundColor: [{
                type: Input
            }], disableRipple: [{
                type: Input
            }], color: [{
                type: Input
            }], tabPanel: [{
                type: Input
            }] } });
// Boilerplate for applying mixins to MatTabLink.
const _MatTabLinkMixinBase = mixinTabIndex(mixinDisableRipple(mixinDisabled(class {
})));
/** Base class with all of the `MatTabLink` functionality. */
class _MatTabLinkBase extends _MatTabLinkMixinBase {
    /** Whether the link is active. */
    get active() {
        return this._isActive;
    }
    set active(value) {
        const newValue = coerceBooleanProperty(value);
        if (newValue !== this._isActive) {
            this._isActive = newValue;
            this._tabNavBar.updateActiveLink();
        }
    }
    /**
     * Whether ripples are disabled on interaction.
     * @docs-private
     */
    get rippleDisabled() {
        return (this.disabled ||
            this.disableRipple ||
            this._tabNavBar.disableRipple ||
            !!this.rippleConfig.disabled);
    }
    constructor(_tabNavBar, 
    /** @docs-private */ elementRef, globalRippleOptions, tabIndex, _focusMonitor, animationMode) {
        super();
        this._tabNavBar = _tabNavBar;
        this.elementRef = elementRef;
        this._focusMonitor = _focusMonitor;
        /** Whether the tab link is active or not. */
        this._isActive = false;
        /** Unique id for the tab. */
        this.id = `mat-tab-link-${nextUniqueId++}`;
        this.rippleConfig = globalRippleOptions || {};
        this.tabIndex = parseInt(tabIndex) || 0;
        if (animationMode === 'NoopAnimations') {
            this.rippleConfig.animation = { enterDuration: 0, exitDuration: 0 };
        }
    }
    /** Focuses the tab link. */
    focus() {
        this.elementRef.nativeElement.focus();
    }
    ngAfterViewInit() {
        this._focusMonitor.monitor(this.elementRef);
    }
    ngOnDestroy() {
        this._focusMonitor.stopMonitoring(this.elementRef);
    }
    _handleFocus() {
        // Since we allow navigation through tabbing in the nav bar, we
        // have to update the focused index whenever the link receives focus.
        this._tabNavBar.focusIndex = this._tabNavBar._items.toArray().indexOf(this);
    }
    _handleKeydown(event) {
        if (this._tabNavBar.tabPanel && event.keyCode === SPACE) {
            this.elementRef.nativeElement.click();
        }
    }
    _getAriaControls() {
        return this._tabNavBar.tabPanel
            ? this._tabNavBar.tabPanel?.id
            : this.elementRef.nativeElement.getAttribute('aria-controls');
    }
    _getAriaSelected() {
        if (this._tabNavBar.tabPanel) {
            return this.active ? 'true' : 'false';
        }
        else {
            return this.elementRef.nativeElement.getAttribute('aria-selected');
        }
    }
    _getAriaCurrent() {
        return this.active && !this._tabNavBar.tabPanel ? 'page' : null;
    }
    _getRole() {
        return this._tabNavBar.tabPanel ? 'tab' : this.elementRef.nativeElement.getAttribute('role');
    }
    _getTabIndex() {
        if (this._tabNavBar.tabPanel) {
            return this._isActive && !this.disabled ? 0 : -1;
        }
        else {
            return this.tabIndex;
        }
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: _MatTabLinkBase, deps: [{ token: _MatTabNavBase }, { token: i0.ElementRef }, { token: MAT_RIPPLE_GLOBAL_OPTIONS, optional: true }, { token: 'tabindex', attribute: true }, { token: i4.FocusMonitor }, { token: ANIMATION_MODULE_TYPE, optional: true }], target: i0.ɵɵFactoryTarget.Directive }); }
    static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.0.0", type: _MatTabLinkBase, inputs: { active: "active", id: "id" }, usesInheritance: true, ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: _MatTabLinkBase, decorators: [{
            type: Directive
        }], ctorParameters: function () { return [{ type: _MatTabNavBase }, { type: i0.ElementRef }, { type: undefined, decorators: [{
                    type: Optional
                }, {
                    type: Inject,
                    args: [MAT_RIPPLE_GLOBAL_OPTIONS]
                }] }, { type: undefined, decorators: [{
                    type: Attribute,
                    args: ['tabindex']
                }] }, { type: i4.FocusMonitor }, { type: undefined, decorators: [{
                    type: Optional
                }, {
                    type: Inject,
                    args: [ANIMATION_MODULE_TYPE]
                }] }]; }, propDecorators: { active: [{
                type: Input
            }], id: [{
                type: Input
            }] } });
const _MatTabLinkBaseWithInkBarItem = mixinInkBarItem(_MatTabLinkBase);
/**
 * Navigation component matching the styles of the tab group header.
 * Provides anchored navigation with animated ink bar.
 */
class MatTabNav extends _MatTabNavBase {
    /** Whether the ink bar should fit its width to the size of the tab label content. */
    get fitInkBarToContent() {
        return this._fitInkBarToContent.value;
    }
    set fitInkBarToContent(v) {
        this._fitInkBarToContent.next(coerceBooleanProperty(v));
        this._changeDetectorRef.markForCheck();
    }
    /** Whether tabs should be stretched to fill the header. */
    get stretchTabs() {
        return this._stretchTabs;
    }
    set stretchTabs(v) {
        this._stretchTabs = coerceBooleanProperty(v);
    }
    constructor(elementRef, dir, ngZone, changeDetectorRef, viewportRuler, platform, animationMode, defaultConfig) {
        super(elementRef, dir, ngZone, changeDetectorRef, viewportRuler, platform, animationMode);
        this._fitInkBarToContent = new BehaviorSubject(false);
        this._stretchTabs = true;
        this.disablePagination =
            defaultConfig && defaultConfig.disablePagination != null
                ? defaultConfig.disablePagination
                : false;
        this.fitInkBarToContent =
            defaultConfig && defaultConfig.fitInkBarToContent != null
                ? defaultConfig.fitInkBarToContent
                : false;
        this.stretchTabs =
            defaultConfig && defaultConfig.stretchTabs != null ? defaultConfig.stretchTabs : true;
    }
    ngAfterContentInit() {
        this._inkBar = new MatInkBar(this._items);
        super.ngAfterContentInit();
    }
    ngAfterViewInit() {
        if (!this.tabPanel && (typeof ngDevMode === 'undefined' || ngDevMode)) {
            throw new Error('A mat-tab-nav-panel must be specified via [tabPanel].');
        }
        super.ngAfterViewInit();
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatTabNav, deps: [{ token: i0.ElementRef }, { token: i1.Directionality, optional: true }, { token: i0.NgZone }, { token: i0.ChangeDetectorRef }, { token: i1$1.ViewportRuler }, { token: i3.Platform }, { token: ANIMATION_MODULE_TYPE, optional: true }, { token: MAT_TABS_CONFIG, optional: true }], target: i0.ɵɵFactoryTarget.Component }); }
    static { this.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "16.0.0", type: MatTabNav, selector: "[mat-tab-nav-bar]", inputs: { color: "color", fitInkBarToContent: "fitInkBarToContent", stretchTabs: ["mat-stretch-tabs", "stretchTabs"] }, host: { properties: { "attr.role": "_getRole()", "class.mat-mdc-tab-header-pagination-controls-enabled": "_showPaginationControls", "class.mat-mdc-tab-header-rtl": "_getLayoutDirection() == 'rtl'", "class.mat-mdc-tab-nav-bar-stretch-tabs": "stretchTabs", "class.mat-primary": "color !== \"warn\" && color !== \"accent\"", "class.mat-accent": "color === \"accent\"", "class.mat-warn": "color === \"warn\"", "class._mat-animation-noopable": "_animationMode === \"NoopAnimations\"" }, classAttribute: "mat-mdc-tab-nav-bar mat-mdc-tab-header" }, queries: [{ propertyName: "_items", predicate: i0.forwardRef(function () { return MatTabLink; }), descendants: true }], viewQueries: [{ propertyName: "_tabListContainer", first: true, predicate: ["tabListContainer"], descendants: true, static: true }, { propertyName: "_tabList", first: true, predicate: ["tabList"], descendants: true, static: true }, { propertyName: "_tabListInner", first: true, predicate: ["tabListInner"], descendants: true, static: true }, { propertyName: "_nextPaginator", first: true, predicate: ["nextPaginator"], descendants: true }, { propertyName: "_previousPaginator", first: true, predicate: ["previousPaginator"], descendants: true }], exportAs: ["matTabNavBar", "matTabNav"], usesInheritance: true, ngImport: i0, template: "<!-- TODO: this also had `mat-elevation-z4`. Figure out what we should do with it. -->\n<button class=\"mat-mdc-tab-header-pagination mat-mdc-tab-header-pagination-before\"\n     #previousPaginator\n     aria-hidden=\"true\"\n     type=\"button\"\n     mat-ripple\n     tabindex=\"-1\"\n     [matRippleDisabled]=\"_disableScrollBefore || disableRipple\"\n     [class.mat-mdc-tab-header-pagination-disabled]=\"_disableScrollBefore\"\n     [disabled]=\"_disableScrollBefore || null\"\n     (click)=\"_handlePaginatorClick('before')\"\n     (mousedown)=\"_handlePaginatorPress('before', $event)\"\n     (touchend)=\"_stopInterval()\">\n  <div class=\"mat-mdc-tab-header-pagination-chevron\"></div>\n</button>\n\n<div class=\"mat-mdc-tab-link-container\" #tabListContainer (keydown)=\"_handleKeydown($event)\">\n  <div class=\"mat-mdc-tab-list\" #tabList (cdkObserveContent)=\"_onContentChanges()\">\n    <div class=\"mat-mdc-tab-links\" #tabListInner>\n      <ng-content></ng-content>\n    </div>\n  </div>\n</div>\n\n<!-- TODO: this also had `mat-elevation-z4`. Figure out what we should do with it. -->\n<button class=\"mat-mdc-tab-header-pagination mat-mdc-tab-header-pagination-after\"\n     #nextPaginator\n     aria-hidden=\"true\"\n     type=\"button\"\n     mat-ripple\n     [matRippleDisabled]=\"_disableScrollAfter || disableRipple\"\n     [class.mat-mdc-tab-header-pagination-disabled]=\"_disableScrollAfter\"\n     [disabled]=\"_disableScrollAfter || null\"\n     tabindex=\"-1\"\n     (mousedown)=\"_handlePaginatorPress('after', $event)\"\n     (click)=\"_handlePaginatorClick('after')\"\n     (touchend)=\"_stopInterval()\">\n  <div class=\"mat-mdc-tab-header-pagination-chevron\"></div>\n</button>\n", styles: [".mdc-tab{min-width:90px;padding-right:24px;padding-left:24px;display:flex;flex:1 0 auto;justify-content:center;box-sizing:border-box;margin:0;padding-top:0;padding-bottom:0;border:none;outline:none;text-align:center;white-space:nowrap;cursor:pointer;-webkit-appearance:none;z-index:1}.mdc-tab::-moz-focus-inner{padding:0;border:0}.mdc-tab[hidden]{display:none}.mdc-tab--min-width{flex:0 1 auto}.mdc-tab__content{display:flex;align-items:center;justify-content:center;height:inherit;pointer-events:none}.mdc-tab__text-label{transition:150ms color linear;display:inline-block;line-height:1;z-index:2}.mdc-tab__icon{transition:150ms color linear;z-index:2}.mdc-tab--stacked .mdc-tab__content{flex-direction:column;align-items:center;justify-content:center}.mdc-tab--stacked .mdc-tab__text-label{padding-top:6px;padding-bottom:4px}.mdc-tab--active .mdc-tab__text-label,.mdc-tab--active .mdc-tab__icon{transition-delay:100ms}.mdc-tab:not(.mdc-tab--stacked) .mdc-tab__icon+.mdc-tab__text-label{padding-left:8px;padding-right:0}[dir=rtl] .mdc-tab:not(.mdc-tab--stacked) .mdc-tab__icon+.mdc-tab__text-label,.mdc-tab:not(.mdc-tab--stacked) .mdc-tab__icon+.mdc-tab__text-label[dir=rtl]{padding-left:0;padding-right:8px}.mdc-tab-indicator{display:flex;position:absolute;top:0;left:0;justify-content:center;width:100%;height:100%;pointer-events:none;z-index:1}.mdc-tab-indicator__content{transform-origin:left;opacity:0}.mdc-tab-indicator__content--underline{align-self:flex-end;box-sizing:border-box;width:100%;border-top-style:solid}.mdc-tab-indicator__content--icon{align-self:center;margin:0 auto}.mdc-tab-indicator--active .mdc-tab-indicator__content{opacity:1}.mdc-tab-indicator .mdc-tab-indicator__content{transition:250ms transform cubic-bezier(0.4, 0, 0.2, 1)}.mdc-tab-indicator--no-transition .mdc-tab-indicator__content{transition:none}.mdc-tab-indicator--fade .mdc-tab-indicator__content{transition:150ms opacity linear}.mdc-tab-indicator--active.mdc-tab-indicator--fade .mdc-tab-indicator__content{transition-delay:100ms}.mat-mdc-tab-ripple{position:absolute;top:0;left:0;bottom:0;right:0;pointer-events:none}.mat-mdc-tab-header{display:flex;overflow:hidden;position:relative;flex-shrink:0;--mdc-tab-indicator-active-indicator-height:2px;--mdc-tab-indicator-active-indicator-shape:0;--mdc-secondary-navigation-tab-container-height:48px}.mat-mdc-tab-header-pagination{-webkit-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:rgba(0,0,0,0);touch-action:none;box-sizing:content-box;background:none;border:none;outline:0;padding:0}.mat-mdc-tab-header-pagination::-moz-focus-inner{border:0}.mat-mdc-tab-header-pagination .mat-ripple-element{opacity:.12;background-color:var(--mat-tab-header-inactive-ripple-color)}.mat-mdc-tab-header-pagination-controls-enabled .mat-mdc-tab-header-pagination{display:flex}.mat-mdc-tab-header-pagination-before,.mat-mdc-tab-header-rtl .mat-mdc-tab-header-pagination-after{padding-left:4px}.mat-mdc-tab-header-pagination-before .mat-mdc-tab-header-pagination-chevron,.mat-mdc-tab-header-rtl .mat-mdc-tab-header-pagination-after .mat-mdc-tab-header-pagination-chevron{transform:rotate(-135deg)}.mat-mdc-tab-header-rtl .mat-mdc-tab-header-pagination-before,.mat-mdc-tab-header-pagination-after{padding-right:4px}.mat-mdc-tab-header-rtl .mat-mdc-tab-header-pagination-before .mat-mdc-tab-header-pagination-chevron,.mat-mdc-tab-header-pagination-after .mat-mdc-tab-header-pagination-chevron{transform:rotate(45deg)}.mat-mdc-tab-header-pagination-chevron{border-style:solid;border-width:2px 2px 0 0;height:8px;width:8px;border-color:var(--mat-tab-header-pagination-icon-color)}.mat-mdc-tab-header-pagination-disabled{box-shadow:none;cursor:default;pointer-events:none}.mat-mdc-tab-header-pagination-disabled .mat-mdc-tab-header-pagination-chevron{opacity:.4}.mat-mdc-tab-list{flex-grow:1;position:relative;transition:transform 500ms cubic-bezier(0.35, 0, 0.25, 1)}._mat-animation-noopable .mat-mdc-tab-list{transition:none}._mat-animation-noopable span.mdc-tab-indicator__content,._mat-animation-noopable span.mdc-tab__text-label{transition:none}.mat-mdc-tab-links{display:flex;flex:1 0 auto}[mat-align-tabs=center]>.mat-mdc-tab-link-container .mat-mdc-tab-links{justify-content:center}[mat-align-tabs=end]>.mat-mdc-tab-link-container .mat-mdc-tab-links{justify-content:flex-end}.mat-mdc-tab-link-container{display:flex;flex-grow:1;overflow:hidden;z-index:1}.mat-mdc-tab-nav-bar.mat-tabs-with-background>.mat-mdc-tab-link-container,.mat-mdc-tab-nav-bar.mat-tabs-with-background>.mat-mdc-tab-header-pagination{background-color:var(--mat-tab-header-with-background-background-color)}.mat-mdc-tab-nav-bar.mat-tabs-with-background.mat-primary>.mat-mdc-tab-link-container .mat-mdc-tab-link .mdc-tab__text-label{color:var(--mat-tab-header-with-background-foreground-color)}.mat-mdc-tab-nav-bar.mat-tabs-with-background.mat-primary>.mat-mdc-tab-link-container .mdc-tab-indicator__content--underline{border-color:var(--mat-tab-header-with-background-foreground-color)}.mat-mdc-tab-nav-bar.mat-tabs-with-background:not(.mat-primary)>.mat-mdc-tab-link-container .mat-mdc-tab-link:not(.mdc-tab--active) .mdc-tab__text-label{color:var(--mat-tab-header-with-background-foreground-color)}.mat-mdc-tab-nav-bar.mat-tabs-with-background:not(.mat-primary)>.mat-mdc-tab-link-container .mat-mdc-tab-link:not(.mdc-tab--active) .mdc-tab-indicator__content--underline{border-color:var(--mat-tab-header-with-background-foreground-color)}.mat-mdc-tab-nav-bar.mat-tabs-with-background>.mat-mdc-tab-link-container .mat-mdc-tab-header-pagination-chevron,.mat-mdc-tab-nav-bar.mat-tabs-with-background>.mat-mdc-tab-link-container .mat-mdc-focus-indicator::before,.mat-mdc-tab-nav-bar.mat-tabs-with-background>.mat-mdc-tab-header-pagination .mat-mdc-tab-header-pagination-chevron,.mat-mdc-tab-nav-bar.mat-tabs-with-background>.mat-mdc-tab-header-pagination .mat-mdc-focus-indicator::before{border-color:var(--mat-tab-header-with-background-foreground-color)}.mat-mdc-tab-nav-bar.mat-tabs-with-background>.mat-mdc-tab-link-container .mat-ripple-element,.mat-mdc-tab-nav-bar.mat-tabs-with-background>.mat-mdc-tab-link-container .mdc-tab__ripple::before,.mat-mdc-tab-nav-bar.mat-tabs-with-background>.mat-mdc-tab-header-pagination .mat-ripple-element,.mat-mdc-tab-nav-bar.mat-tabs-with-background>.mat-mdc-tab-header-pagination .mdc-tab__ripple::before{background-color:var(--mat-tab-header-with-background-foreground-color)}.mat-mdc-tab-nav-bar.mat-tabs-with-background>.mat-mdc-tab-link-container .mat-mdc-tab-header-pagination-chevron,.mat-mdc-tab-nav-bar.mat-tabs-with-background>.mat-mdc-tab-header-pagination .mat-mdc-tab-header-pagination-chevron{color:var(--mat-tab-header-with-background-foreground-color)}"], dependencies: [{ kind: "directive", type: i5.MatRipple, selector: "[mat-ripple], [matRipple]", inputs: ["matRippleColor", "matRippleUnbounded", "matRippleCentered", "matRippleRadius", "matRippleAnimation", "matRippleDisabled", "matRippleTrigger"], exportAs: ["matRipple"] }, { kind: "directive", type: i5$1.CdkObserveContent, selector: "[cdkObserveContent]", inputs: ["cdkObserveContentDisabled", "debounce"], outputs: ["cdkObserveContent"], exportAs: ["cdkObserveContent"] }], changeDetection: i0.ChangeDetectionStrategy.Default, encapsulation: i0.ViewEncapsulation.None }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatTabNav, decorators: [{
            type: Component,
            args: [{ selector: '[mat-tab-nav-bar]', exportAs: 'matTabNavBar, matTabNav', inputs: ['color'], host: {
                        '[attr.role]': '_getRole()',
                        'class': 'mat-mdc-tab-nav-bar mat-mdc-tab-header',
                        '[class.mat-mdc-tab-header-pagination-controls-enabled]': '_showPaginationControls',
                        '[class.mat-mdc-tab-header-rtl]': "_getLayoutDirection() == 'rtl'",
                        '[class.mat-mdc-tab-nav-bar-stretch-tabs]': 'stretchTabs',
                        '[class.mat-primary]': 'color !== "warn" && color !== "accent"',
                        '[class.mat-accent]': 'color === "accent"',
                        '[class.mat-warn]': 'color === "warn"',
                        '[class._mat-animation-noopable]': '_animationMode === "NoopAnimations"',
                    }, encapsulation: ViewEncapsulation.None, changeDetection: ChangeDetectionStrategy.Default, template: "<!-- TODO: this also had `mat-elevation-z4`. Figure out what we should do with it. -->\n<button class=\"mat-mdc-tab-header-pagination mat-mdc-tab-header-pagination-before\"\n     #previousPaginator\n     aria-hidden=\"true\"\n     type=\"button\"\n     mat-ripple\n     tabindex=\"-1\"\n     [matRippleDisabled]=\"_disableScrollBefore || disableRipple\"\n     [class.mat-mdc-tab-header-pagination-disabled]=\"_disableScrollBefore\"\n     [disabled]=\"_disableScrollBefore || null\"\n     (click)=\"_handlePaginatorClick('before')\"\n     (mousedown)=\"_handlePaginatorPress('before', $event)\"\n     (touchend)=\"_stopInterval()\">\n  <div class=\"mat-mdc-tab-header-pagination-chevron\"></div>\n</button>\n\n<div class=\"mat-mdc-tab-link-container\" #tabListContainer (keydown)=\"_handleKeydown($event)\">\n  <div class=\"mat-mdc-tab-list\" #tabList (cdkObserveContent)=\"_onContentChanges()\">\n    <div class=\"mat-mdc-tab-links\" #tabListInner>\n      <ng-content></ng-content>\n    </div>\n  </div>\n</div>\n\n<!-- TODO: this also had `mat-elevation-z4`. Figure out what we should do with it. -->\n<button class=\"mat-mdc-tab-header-pagination mat-mdc-tab-header-pagination-after\"\n     #nextPaginator\n     aria-hidden=\"true\"\n     type=\"button\"\n     mat-ripple\n     [matRippleDisabled]=\"_disableScrollAfter || disableRipple\"\n     [class.mat-mdc-tab-header-pagination-disabled]=\"_disableScrollAfter\"\n     [disabled]=\"_disableScrollAfter || null\"\n     tabindex=\"-1\"\n     (mousedown)=\"_handlePaginatorPress('after', $event)\"\n     (click)=\"_handlePaginatorClick('after')\"\n     (touchend)=\"_stopInterval()\">\n  <div class=\"mat-mdc-tab-header-pagination-chevron\"></div>\n</button>\n", styles: [".mdc-tab{min-width:90px;padding-right:24px;padding-left:24px;display:flex;flex:1 0 auto;justify-content:center;box-sizing:border-box;margin:0;padding-top:0;padding-bottom:0;border:none;outline:none;text-align:center;white-space:nowrap;cursor:pointer;-webkit-appearance:none;z-index:1}.mdc-tab::-moz-focus-inner{padding:0;border:0}.mdc-tab[hidden]{display:none}.mdc-tab--min-width{flex:0 1 auto}.mdc-tab__content{display:flex;align-items:center;justify-content:center;height:inherit;pointer-events:none}.mdc-tab__text-label{transition:150ms color linear;display:inline-block;line-height:1;z-index:2}.mdc-tab__icon{transition:150ms color linear;z-index:2}.mdc-tab--stacked .mdc-tab__content{flex-direction:column;align-items:center;justify-content:center}.mdc-tab--stacked .mdc-tab__text-label{padding-top:6px;padding-bottom:4px}.mdc-tab--active .mdc-tab__text-label,.mdc-tab--active .mdc-tab__icon{transition-delay:100ms}.mdc-tab:not(.mdc-tab--stacked) .mdc-tab__icon+.mdc-tab__text-label{padding-left:8px;padding-right:0}[dir=rtl] .mdc-tab:not(.mdc-tab--stacked) .mdc-tab__icon+.mdc-tab__text-label,.mdc-tab:not(.mdc-tab--stacked) .mdc-tab__icon+.mdc-tab__text-label[dir=rtl]{padding-left:0;padding-right:8px}.mdc-tab-indicator{display:flex;position:absolute;top:0;left:0;justify-content:center;width:100%;height:100%;pointer-events:none;z-index:1}.mdc-tab-indicator__content{transform-origin:left;opacity:0}.mdc-tab-indicator__content--underline{align-self:flex-end;box-sizing:border-box;width:100%;border-top-style:solid}.mdc-tab-indicator__content--icon{align-self:center;margin:0 auto}.mdc-tab-indicator--active .mdc-tab-indicator__content{opacity:1}.mdc-tab-indicator .mdc-tab-indicator__content{transition:250ms transform cubic-bezier(0.4, 0, 0.2, 1)}.mdc-tab-indicator--no-transition .mdc-tab-indicator__content{transition:none}.mdc-tab-indicator--fade .mdc-tab-indicator__content{transition:150ms opacity linear}.mdc-tab-indicator--active.mdc-tab-indicator--fade .mdc-tab-indicator__content{transition-delay:100ms}.mat-mdc-tab-ripple{position:absolute;top:0;left:0;bottom:0;right:0;pointer-events:none}.mat-mdc-tab-header{display:flex;overflow:hidden;position:relative;flex-shrink:0;--mdc-tab-indicator-active-indicator-height:2px;--mdc-tab-indicator-active-indicator-shape:0;--mdc-secondary-navigation-tab-container-height:48px}.mat-mdc-tab-header-pagination{-webkit-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:rgba(0,0,0,0);touch-action:none;box-sizing:content-box;background:none;border:none;outline:0;padding:0}.mat-mdc-tab-header-pagination::-moz-focus-inner{border:0}.mat-mdc-tab-header-pagination .mat-ripple-element{opacity:.12;background-color:var(--mat-tab-header-inactive-ripple-color)}.mat-mdc-tab-header-pagination-controls-enabled .mat-mdc-tab-header-pagination{display:flex}.mat-mdc-tab-header-pagination-before,.mat-mdc-tab-header-rtl .mat-mdc-tab-header-pagination-after{padding-left:4px}.mat-mdc-tab-header-pagination-before .mat-mdc-tab-header-pagination-chevron,.mat-mdc-tab-header-rtl .mat-mdc-tab-header-pagination-after .mat-mdc-tab-header-pagination-chevron{transform:rotate(-135deg)}.mat-mdc-tab-header-rtl .mat-mdc-tab-header-pagination-before,.mat-mdc-tab-header-pagination-after{padding-right:4px}.mat-mdc-tab-header-rtl .mat-mdc-tab-header-pagination-before .mat-mdc-tab-header-pagination-chevron,.mat-mdc-tab-header-pagination-after .mat-mdc-tab-header-pagination-chevron{transform:rotate(45deg)}.mat-mdc-tab-header-pagination-chevron{border-style:solid;border-width:2px 2px 0 0;height:8px;width:8px;border-color:var(--mat-tab-header-pagination-icon-color)}.mat-mdc-tab-header-pagination-disabled{box-shadow:none;cursor:default;pointer-events:none}.mat-mdc-tab-header-pagination-disabled .mat-mdc-tab-header-pagination-chevron{opacity:.4}.mat-mdc-tab-list{flex-grow:1;position:relative;transition:transform 500ms cubic-bezier(0.35, 0, 0.25, 1)}._mat-animation-noopable .mat-mdc-tab-list{transition:none}._mat-animation-noopable span.mdc-tab-indicator__content,._mat-animation-noopable span.mdc-tab__text-label{transition:none}.mat-mdc-tab-links{display:flex;flex:1 0 auto}[mat-align-tabs=center]>.mat-mdc-tab-link-container .mat-mdc-tab-links{justify-content:center}[mat-align-tabs=end]>.mat-mdc-tab-link-container .mat-mdc-tab-links{justify-content:flex-end}.mat-mdc-tab-link-container{display:flex;flex-grow:1;overflow:hidden;z-index:1}.mat-mdc-tab-nav-bar.mat-tabs-with-background>.mat-mdc-tab-link-container,.mat-mdc-tab-nav-bar.mat-tabs-with-background>.mat-mdc-tab-header-pagination{background-color:var(--mat-tab-header-with-background-background-color)}.mat-mdc-tab-nav-bar.mat-tabs-with-background.mat-primary>.mat-mdc-tab-link-container .mat-mdc-tab-link .mdc-tab__text-label{color:var(--mat-tab-header-with-background-foreground-color)}.mat-mdc-tab-nav-bar.mat-tabs-with-background.mat-primary>.mat-mdc-tab-link-container .mdc-tab-indicator__content--underline{border-color:var(--mat-tab-header-with-background-foreground-color)}.mat-mdc-tab-nav-bar.mat-tabs-with-background:not(.mat-primary)>.mat-mdc-tab-link-container .mat-mdc-tab-link:not(.mdc-tab--active) .mdc-tab__text-label{color:var(--mat-tab-header-with-background-foreground-color)}.mat-mdc-tab-nav-bar.mat-tabs-with-background:not(.mat-primary)>.mat-mdc-tab-link-container .mat-mdc-tab-link:not(.mdc-tab--active) .mdc-tab-indicator__content--underline{border-color:var(--mat-tab-header-with-background-foreground-color)}.mat-mdc-tab-nav-bar.mat-tabs-with-background>.mat-mdc-tab-link-container .mat-mdc-tab-header-pagination-chevron,.mat-mdc-tab-nav-bar.mat-tabs-with-background>.mat-mdc-tab-link-container .mat-mdc-focus-indicator::before,.mat-mdc-tab-nav-bar.mat-tabs-with-background>.mat-mdc-tab-header-pagination .mat-mdc-tab-header-pagination-chevron,.mat-mdc-tab-nav-bar.mat-tabs-with-background>.mat-mdc-tab-header-pagination .mat-mdc-focus-indicator::before{border-color:var(--mat-tab-header-with-background-foreground-color)}.mat-mdc-tab-nav-bar.mat-tabs-with-background>.mat-mdc-tab-link-container .mat-ripple-element,.mat-mdc-tab-nav-bar.mat-tabs-with-background>.mat-mdc-tab-link-container .mdc-tab__ripple::before,.mat-mdc-tab-nav-bar.mat-tabs-with-background>.mat-mdc-tab-header-pagination .mat-ripple-element,.mat-mdc-tab-nav-bar.mat-tabs-with-background>.mat-mdc-tab-header-pagination .mdc-tab__ripple::before{background-color:var(--mat-tab-header-with-background-foreground-color)}.mat-mdc-tab-nav-bar.mat-tabs-with-background>.mat-mdc-tab-link-container .mat-mdc-tab-header-pagination-chevron,.mat-mdc-tab-nav-bar.mat-tabs-with-background>.mat-mdc-tab-header-pagination .mat-mdc-tab-header-pagination-chevron{color:var(--mat-tab-header-with-background-foreground-color)}"] }]
        }], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: i1.Directionality, decorators: [{
                    type: Optional
                }] }, { type: i0.NgZone }, { type: i0.ChangeDetectorRef }, { type: i1$1.ViewportRuler }, { type: i3.Platform }, { type: undefined, decorators: [{
                    type: Optional
                }, {
                    type: Inject,
                    args: [ANIMATION_MODULE_TYPE]
                }] }, { type: undefined, decorators: [{
                    type: Optional
                }, {
                    type: Inject,
                    args: [MAT_TABS_CONFIG]
                }] }]; }, propDecorators: { fitInkBarToContent: [{
                type: Input
            }], stretchTabs: [{
                type: Input,
                args: ['mat-stretch-tabs']
            }], _items: [{
                type: ContentChildren,
                args: [forwardRef(() => MatTabLink), { descendants: true }]
            }], _tabListContainer: [{
                type: ViewChild,
                args: ['tabListContainer', { static: true }]
            }], _tabList: [{
                type: ViewChild,
                args: ['tabList', { static: true }]
            }], _tabListInner: [{
                type: ViewChild,
                args: ['tabListInner', { static: true }]
            }], _nextPaginator: [{
                type: ViewChild,
                args: ['nextPaginator']
            }], _previousPaginator: [{
                type: ViewChild,
                args: ['previousPaginator']
            }] } });
/**
 * Link inside of a `mat-tab-nav-bar`.
 */
class MatTabLink extends _MatTabLinkBaseWithInkBarItem {
    constructor(tabNavBar, elementRef, globalRippleOptions, tabIndex, focusMonitor, animationMode) {
        super(tabNavBar, elementRef, globalRippleOptions, tabIndex, focusMonitor, animationMode);
        this._destroyed = new Subject();
        tabNavBar._fitInkBarToContent.pipe(takeUntil(this._destroyed)).subscribe(fitInkBarToContent => {
            this.fitInkBarToContent = fitInkBarToContent;
        });
    }
    ngOnDestroy() {
        this._destroyed.next();
        this._destroyed.complete();
        super.ngOnDestroy();
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatTabLink, deps: [{ token: MatTabNav }, { token: i0.ElementRef }, { token: MAT_RIPPLE_GLOBAL_OPTIONS, optional: true }, { token: 'tabindex', attribute: true }, { token: i4.FocusMonitor }, { token: ANIMATION_MODULE_TYPE, optional: true }], target: i0.ɵɵFactoryTarget.Component }); }
    static { this.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "16.0.0", type: MatTabLink, selector: "[mat-tab-link], [matTabLink]", inputs: { disabled: "disabled", disableRipple: "disableRipple", tabIndex: "tabIndex", active: "active", id: "id" }, host: { listeners: { "focus": "_handleFocus()", "keydown": "_handleKeydown($event)" }, properties: { "attr.aria-controls": "_getAriaControls()", "attr.aria-current": "_getAriaCurrent()", "attr.aria-disabled": "disabled", "attr.aria-selected": "_getAriaSelected()", "attr.id": "id", "attr.tabIndex": "_getTabIndex()", "attr.role": "_getRole()", "class.mat-mdc-tab-disabled": "disabled", "class.mdc-tab--active": "active" }, classAttribute: "mdc-tab mat-mdc-tab-link mat-mdc-focus-indicator" }, exportAs: ["matTabLink"], usesInheritance: true, ngImport: i0, template: "<span class=\"mdc-tab__ripple\"></span>\n\n<div\n  class=\"mat-mdc-tab-ripple\"\n  mat-ripple\n  [matRippleTrigger]=\"elementRef.nativeElement\"\n  [matRippleDisabled]=\"rippleDisabled\"></div>\n\n<span class=\"mdc-tab__content\">\n  <span class=\"mdc-tab__text-label\">\n    <ng-content></ng-content>\n  </span>\n</span>\n\n", styles: [".mat-mdc-tab-link{-webkit-tap-highlight-color:rgba(0,0,0,0);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-decoration:none;background:none;font-family:var(--mat-tab-header-label-text-font);font-size:var(--mat-tab-header-label-text-size);letter-spacing:var(--mat-tab-header-label-text-letter-spacing);line-height:var(--mat-tab-header-label-text-line-height);font-weight:var(--mat-tab-header-label-text-weight)}.mat-mdc-tab-link .mdc-tab-indicator__content--underline{border-color:var(--mdc-tab-indicator-active-indicator-color)}.mat-mdc-tab-link .mdc-tab-indicator__content--underline{border-top-width:var(--mdc-tab-indicator-active-indicator-height)}.mat-mdc-tab-link .mdc-tab-indicator__content--underline{border-radius:var(--mdc-tab-indicator-active-indicator-shape)}.mat-mdc-tab-link:not(.mdc-tab--stacked){height:var(--mdc-secondary-navigation-tab-container-height)}.mat-mdc-tab-link:not(:disabled).mdc-tab--active .mdc-tab__icon{fill:currentColor}.mat-mdc-tab-link:not(:disabled):hover.mdc-tab--active .mdc-tab__icon{fill:currentColor}.mat-mdc-tab-link:not(:disabled):focus.mdc-tab--active .mdc-tab__icon{fill:currentColor}.mat-mdc-tab-link:not(:disabled):active.mdc-tab--active .mdc-tab__icon{fill:currentColor}.mat-mdc-tab-link:disabled.mdc-tab--active .mdc-tab__icon{fill:currentColor}.mat-mdc-tab-link:not(:disabled):not(.mdc-tab--active) .mdc-tab__icon{fill:currentColor}.mat-mdc-tab-link:not(:disabled):hover:not(.mdc-tab--active) .mdc-tab__icon{fill:currentColor}.mat-mdc-tab-link:not(:disabled):focus:not(.mdc-tab--active) .mdc-tab__icon{fill:currentColor}.mat-mdc-tab-link:not(:disabled):active:not(.mdc-tab--active) .mdc-tab__icon{fill:currentColor}.mat-mdc-tab-link:disabled:not(.mdc-tab--active) .mdc-tab__icon{fill:currentColor}.mat-mdc-tab-link.mdc-tab{flex-grow:0}.mat-mdc-tab-link:hover .mdc-tab__text-label{color:var(--mat-tab-header-inactive-hover-label-text-color)}.mat-mdc-tab-link:focus .mdc-tab__text-label{color:var(--mat-tab-header-inactive-focus-label-text-color)}.mat-mdc-tab-link.mdc-tab--active .mdc-tab__text-label{color:var(--mat-tab-header-active-label-text-color)}.mat-mdc-tab-link.mdc-tab--active .mdc-tab__ripple::before,.mat-mdc-tab-link.mdc-tab--active .mat-ripple-element{background-color:var(--mat-tab-header-active-ripple-color)}.mat-mdc-tab-link.mdc-tab--active:hover .mdc-tab__text-label{color:var(--mat-tab-header-active-hover-label-text-color)}.mat-mdc-tab-link.mdc-tab--active:hover .mdc-tab-indicator__content--underline{border-color:var(--mat-tab-header-active-hover-indicator-color)}.mat-mdc-tab-link.mdc-tab--active:focus .mdc-tab__text-label{color:var(--mat-tab-header-active-focus-label-text-color)}.mat-mdc-tab-link.mdc-tab--active:focus .mdc-tab-indicator__content--underline{border-color:var(--mat-tab-header-active-focus-indicator-color)}.mat-mdc-tab-link.mat-mdc-tab-disabled{opacity:.4;pointer-events:none}.mat-mdc-tab-link.mat-mdc-tab-disabled .mdc-tab__content{pointer-events:none}.mat-mdc-tab-link.mat-mdc-tab-disabled .mdc-tab__ripple::before,.mat-mdc-tab-link.mat-mdc-tab-disabled .mat-ripple-element{background-color:var(--mat-tab-header-disabled-ripple-color)}.mat-mdc-tab-link .mdc-tab__ripple::before{content:\"\";display:block;position:absolute;top:0;left:0;right:0;bottom:0;opacity:0;pointer-events:none;background-color:var(--mat-tab-header-inactive-ripple-color)}.mat-mdc-tab-link .mdc-tab__text-label{color:var(--mat-tab-header-inactive-label-text-color);display:inline-flex;align-items:center}.mat-mdc-tab-link .mdc-tab__content{position:relative;pointer-events:auto}.mat-mdc-tab-link:hover .mdc-tab__ripple::before{opacity:.04}.mat-mdc-tab-link.cdk-program-focused .mdc-tab__ripple::before,.mat-mdc-tab-link.cdk-keyboard-focused .mdc-tab__ripple::before{opacity:.12}.mat-mdc-tab-link .mat-ripple-element{opacity:.12;background-color:var(--mat-tab-header-inactive-ripple-color)}.mat-mdc-tab-header.mat-mdc-tab-nav-bar-stretch-tabs .mat-mdc-tab-link{flex-grow:1}.mat-mdc-tab-link::before{margin:5px}@media(max-width: 599px){.mat-mdc-tab-link{min-width:72px}}"], dependencies: [{ kind: "directive", type: i5.MatRipple, selector: "[mat-ripple], [matRipple]", inputs: ["matRippleColor", "matRippleUnbounded", "matRippleCentered", "matRippleRadius", "matRippleAnimation", "matRippleDisabled", "matRippleTrigger"], exportAs: ["matRipple"] }], changeDetection: i0.ChangeDetectionStrategy.OnPush, encapsulation: i0.ViewEncapsulation.None }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatTabLink, decorators: [{
            type: Component,
            args: [{ selector: '[mat-tab-link], [matTabLink]', exportAs: 'matTabLink', inputs: ['disabled', 'disableRipple', 'tabIndex', 'active', 'id'], changeDetection: ChangeDetectionStrategy.OnPush, encapsulation: ViewEncapsulation.None, host: {
                        'class': 'mdc-tab mat-mdc-tab-link mat-mdc-focus-indicator',
                        '[attr.aria-controls]': '_getAriaControls()',
                        '[attr.aria-current]': '_getAriaCurrent()',
                        '[attr.aria-disabled]': 'disabled',
                        '[attr.aria-selected]': '_getAriaSelected()',
                        '[attr.id]': 'id',
                        '[attr.tabIndex]': '_getTabIndex()',
                        '[attr.role]': '_getRole()',
                        '[class.mat-mdc-tab-disabled]': 'disabled',
                        '[class.mdc-tab--active]': 'active',
                        '(focus)': '_handleFocus()',
                        '(keydown)': '_handleKeydown($event)',
                    }, template: "<span class=\"mdc-tab__ripple\"></span>\n\n<div\n  class=\"mat-mdc-tab-ripple\"\n  mat-ripple\n  [matRippleTrigger]=\"elementRef.nativeElement\"\n  [matRippleDisabled]=\"rippleDisabled\"></div>\n\n<span class=\"mdc-tab__content\">\n  <span class=\"mdc-tab__text-label\">\n    <ng-content></ng-content>\n  </span>\n</span>\n\n", styles: [".mat-mdc-tab-link{-webkit-tap-highlight-color:rgba(0,0,0,0);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-decoration:none;background:none;font-family:var(--mat-tab-header-label-text-font);font-size:var(--mat-tab-header-label-text-size);letter-spacing:var(--mat-tab-header-label-text-letter-spacing);line-height:var(--mat-tab-header-label-text-line-height);font-weight:var(--mat-tab-header-label-text-weight)}.mat-mdc-tab-link .mdc-tab-indicator__content--underline{border-color:var(--mdc-tab-indicator-active-indicator-color)}.mat-mdc-tab-link .mdc-tab-indicator__content--underline{border-top-width:var(--mdc-tab-indicator-active-indicator-height)}.mat-mdc-tab-link .mdc-tab-indicator__content--underline{border-radius:var(--mdc-tab-indicator-active-indicator-shape)}.mat-mdc-tab-link:not(.mdc-tab--stacked){height:var(--mdc-secondary-navigation-tab-container-height)}.mat-mdc-tab-link:not(:disabled).mdc-tab--active .mdc-tab__icon{fill:currentColor}.mat-mdc-tab-link:not(:disabled):hover.mdc-tab--active .mdc-tab__icon{fill:currentColor}.mat-mdc-tab-link:not(:disabled):focus.mdc-tab--active .mdc-tab__icon{fill:currentColor}.mat-mdc-tab-link:not(:disabled):active.mdc-tab--active .mdc-tab__icon{fill:currentColor}.mat-mdc-tab-link:disabled.mdc-tab--active .mdc-tab__icon{fill:currentColor}.mat-mdc-tab-link:not(:disabled):not(.mdc-tab--active) .mdc-tab__icon{fill:currentColor}.mat-mdc-tab-link:not(:disabled):hover:not(.mdc-tab--active) .mdc-tab__icon{fill:currentColor}.mat-mdc-tab-link:not(:disabled):focus:not(.mdc-tab--active) .mdc-tab__icon{fill:currentColor}.mat-mdc-tab-link:not(:disabled):active:not(.mdc-tab--active) .mdc-tab__icon{fill:currentColor}.mat-mdc-tab-link:disabled:not(.mdc-tab--active) .mdc-tab__icon{fill:currentColor}.mat-mdc-tab-link.mdc-tab{flex-grow:0}.mat-mdc-tab-link:hover .mdc-tab__text-label{color:var(--mat-tab-header-inactive-hover-label-text-color)}.mat-mdc-tab-link:focus .mdc-tab__text-label{color:var(--mat-tab-header-inactive-focus-label-text-color)}.mat-mdc-tab-link.mdc-tab--active .mdc-tab__text-label{color:var(--mat-tab-header-active-label-text-color)}.mat-mdc-tab-link.mdc-tab--active .mdc-tab__ripple::before,.mat-mdc-tab-link.mdc-tab--active .mat-ripple-element{background-color:var(--mat-tab-header-active-ripple-color)}.mat-mdc-tab-link.mdc-tab--active:hover .mdc-tab__text-label{color:var(--mat-tab-header-active-hover-label-text-color)}.mat-mdc-tab-link.mdc-tab--active:hover .mdc-tab-indicator__content--underline{border-color:var(--mat-tab-header-active-hover-indicator-color)}.mat-mdc-tab-link.mdc-tab--active:focus .mdc-tab__text-label{color:var(--mat-tab-header-active-focus-label-text-color)}.mat-mdc-tab-link.mdc-tab--active:focus .mdc-tab-indicator__content--underline{border-color:var(--mat-tab-header-active-focus-indicator-color)}.mat-mdc-tab-link.mat-mdc-tab-disabled{opacity:.4;pointer-events:none}.mat-mdc-tab-link.mat-mdc-tab-disabled .mdc-tab__content{pointer-events:none}.mat-mdc-tab-link.mat-mdc-tab-disabled .mdc-tab__ripple::before,.mat-mdc-tab-link.mat-mdc-tab-disabled .mat-ripple-element{background-color:var(--mat-tab-header-disabled-ripple-color)}.mat-mdc-tab-link .mdc-tab__ripple::before{content:\"\";display:block;position:absolute;top:0;left:0;right:0;bottom:0;opacity:0;pointer-events:none;background-color:var(--mat-tab-header-inactive-ripple-color)}.mat-mdc-tab-link .mdc-tab__text-label{color:var(--mat-tab-header-inactive-label-text-color);display:inline-flex;align-items:center}.mat-mdc-tab-link .mdc-tab__content{position:relative;pointer-events:auto}.mat-mdc-tab-link:hover .mdc-tab__ripple::before{opacity:.04}.mat-mdc-tab-link.cdk-program-focused .mdc-tab__ripple::before,.mat-mdc-tab-link.cdk-keyboard-focused .mdc-tab__ripple::before{opacity:.12}.mat-mdc-tab-link .mat-ripple-element{opacity:.12;background-color:var(--mat-tab-header-inactive-ripple-color)}.mat-mdc-tab-header.mat-mdc-tab-nav-bar-stretch-tabs .mat-mdc-tab-link{flex-grow:1}.mat-mdc-tab-link::before{margin:5px}@media(max-width: 599px){.mat-mdc-tab-link{min-width:72px}}"] }]
        }], ctorParameters: function () { return [{ type: MatTabNav }, { type: i0.ElementRef }, { type: undefined, decorators: [{
                    type: Optional
                }, {
                    type: Inject,
                    args: [MAT_RIPPLE_GLOBAL_OPTIONS]
                }] }, { type: undefined, decorators: [{
                    type: Attribute,
                    args: ['tabindex']
                }] }, { type: i4.FocusMonitor }, { type: undefined, decorators: [{
                    type: Optional
                }, {
                    type: Inject,
                    args: [ANIMATION_MODULE_TYPE]
                }] }]; } });
/**
 * Tab panel component associated with MatTabNav.
 */
class MatTabNavPanel {
    constructor() {
        /** Unique id for the tab panel. */
        this.id = `mat-tab-nav-panel-${nextUniqueId++}`;
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatTabNavPanel, deps: [], target: i0.ɵɵFactoryTarget.Component }); }
    static { this.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "16.0.0", type: MatTabNavPanel, selector: "mat-tab-nav-panel", inputs: { id: "id" }, host: { attributes: { "role": "tabpanel" }, properties: { "attr.aria-labelledby": "_activeTabId", "attr.id": "id" }, classAttribute: "mat-mdc-tab-nav-panel" }, exportAs: ["matTabNavPanel"], ngImport: i0, template: '<ng-content></ng-content>', isInline: true, changeDetection: i0.ChangeDetectionStrategy.OnPush, encapsulation: i0.ViewEncapsulation.None }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatTabNavPanel, decorators: [{
            type: Component,
            args: [{
                    selector: 'mat-tab-nav-panel',
                    exportAs: 'matTabNavPanel',
                    template: '<ng-content></ng-content>',
                    host: {
                        '[attr.aria-labelledby]': '_activeTabId',
                        '[attr.id]': 'id',
                        'class': 'mat-mdc-tab-nav-panel',
                        'role': 'tabpanel',
                    },
                    encapsulation: ViewEncapsulation.None,
                    changeDetection: ChangeDetectionStrategy.OnPush,
                }]
        }], propDecorators: { id: [{
                type: Input
            }] } });

class MatTabsModule {
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatTabsModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule }); }
    static { this.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: "14.0.0", version: "16.0.0", ngImport: i0, type: MatTabsModule, declarations: [MatTabContent,
            MatTabLabel,
            MatTab,
            MatTabGroup,
            MatTabNav,
            MatTabNavPanel,
            MatTabLink,
            // Private directives, should not be exported.
            MatTabBody,
            MatTabBodyPortal,
            MatTabLabelWrapper,
            MatTabHeader], imports: [CommonModule,
            MatCommonModule,
            PortalModule,
            MatRippleModule,
            ObserversModule,
            A11yModule], exports: [MatCommonModule,
            MatTabContent,
            MatTabLabel,
            MatTab,
            MatTabGroup,
            MatTabNav,
            MatTabNavPanel,
            MatTabLink] }); }
    static { this.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatTabsModule, imports: [CommonModule,
            MatCommonModule,
            PortalModule,
            MatRippleModule,
            ObserversModule,
            A11yModule, MatCommonModule] }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: MatTabsModule, decorators: [{
            type: NgModule,
            args: [{
                    imports: [
                        CommonModule,
                        MatCommonModule,
                        PortalModule,
                        MatRippleModule,
                        ObserversModule,
                        A11yModule,
                    ],
                    exports: [
                        MatCommonModule,
                        MatTabContent,
                        MatTabLabel,
                        MatTab,
                        MatTabGroup,
                        MatTabNav,
                        MatTabNavPanel,
                        MatTabLink,
                    ],
                    declarations: [
                        MatTabContent,
                        MatTabLabel,
                        MatTab,
                        MatTabGroup,
                        MatTabNav,
                        MatTabNavPanel,
                        MatTabLink,
                        // Private directives, should not be exported.
                        MatTabBody,
                        MatTabBodyPortal,
                        MatTabLabelWrapper,
                        MatTabHeader,
                    ],
                }]
        }] });

/**
 * Generated bundle index. Do not edit.
 */

export { MAT_TAB, MAT_TABS_CONFIG, MAT_TAB_CONTENT, MAT_TAB_GROUP, MAT_TAB_LABEL, MatInkBar, MatPaginatedTabHeader, MatTab, MatTabBody, MatTabBodyPortal, MatTabChangeEvent, MatTabContent, MatTabGroup, MatTabHeader, MatTabLabel, MatTabLabelWrapper, MatTabLink, MatTabNav, MatTabNavPanel, MatTabsModule, _MAT_INK_BAR_POSITIONER, _MAT_INK_BAR_POSITIONER_FACTORY, _MatTabBase, _MatTabBodyBase, _MatTabGroupBase, _MatTabHeaderBase, _MatTabLabelWrapperBase, _MatTabLinkBase, _MatTabNavBase, matTabsAnimations };
//# sourceMappingURL=tabs.mjs.map