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@angular/material

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/** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ import { Component, ChangeDetectorRef, Input, Inject, Output, EventEmitter, ElementRef, Directive, Optional, ViewEncapsulation, ChangeDetectionStrategy, ComponentFactoryResolver, ViewContainerRef, forwardRef, ViewChild, } from '@angular/core'; import { TemplatePortal, CdkPortalOutlet } from '@angular/cdk/portal'; import { Directionality } from '@angular/cdk/bidi'; import { DOCUMENT } from '@angular/common'; import { Subscription, Subject } from 'rxjs'; import { matTabsAnimations } from './tabs-animations'; import { startWith, distinctUntilChanged } from 'rxjs/operators'; import * as i0 from "@angular/core"; import * as i1 from "@angular/cdk/bidi"; /** * The portal host directive for the contents of the tab. * @docs-private */ export 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(); } } MatTabBodyPortal.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "14.0.1", ngImport: i0, type: MatTabBodyPortal, deps: [{ token: i0.ComponentFactoryResolver }, { token: i0.ViewContainerRef }, { token: forwardRef(() => MatTabBody) }, { token: DOCUMENT }], target: i0.ɵɵFactoryTarget.Directive }); MatTabBodyPortal.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "14.0.1", type: MatTabBodyPortal, selector: "[matTabBodyHost]", usesInheritance: true, ngImport: i0 }); i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "14.0.1", 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 */ export class _MatTabBodyBase { 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(); } }); } /** The shifted index position of the tab body, where zero represents the active center tab. */ set position(position) { this._positionIndex = position; this._computePositionAnimationState(); } /** * 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'; } } _MatTabBodyBase.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "14.0.1", ngImport: i0, type: _MatTabBodyBase, deps: [{ token: i0.ElementRef }, { token: i1.Directionality, optional: true }, { token: i0.ChangeDetectorRef }], target: i0.ɵɵFactoryTarget.Directive }); _MatTabBodyBase.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "14.0.1", 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: "14.0.1", 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 */ export class MatTabBody extends _MatTabBodyBase { constructor(elementRef, dir, changeDetectorRef) { super(elementRef, dir, changeDetectorRef); } } MatTabBody.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "14.0.1", ngImport: i0, type: MatTabBody, deps: [{ token: i0.ElementRef }, { token: i1.Directionality, optional: true }, { token: i0.ChangeDetectorRef }], target: i0.ɵɵFactoryTarget.Component }); MatTabBody.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "14.0.1", type: MatTabBody, selector: "mat-tab-body", host: { classAttribute: "mat-tab-body" }, viewQueries: [{ propertyName: "_portalHost", first: true, predicate: CdkPortalOutlet, descendants: true }], usesInheritance: true, ngImport: i0, template: "<div class=\"mat-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-tab-body-content{height:100%;overflow:auto}.mat-tab-group-dynamic-height .mat-tab-body-content{overflow:hidden}.mat-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: "14.0.1", ngImport: i0, type: MatTabBody, decorators: [{ type: Component, args: [{ selector: 'mat-tab-body', encapsulation: ViewEncapsulation.None, changeDetection: ChangeDetectionStrategy.Default, animations: [matTabsAnimations.translateTab], host: { 'class': 'mat-tab-body', }, template: "<div class=\"mat-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-tab-body-content{height:100%;overflow:auto}.mat-tab-group-dynamic-height .mat-tab-body-content{overflow:hidden}.mat-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] }] } }); //# 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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {\n  Component,\n  ChangeDetectorRef,\n  Input,\n  Inject,\n  Output,\n  EventEmitter,\n  OnDestroy,\n  OnInit,\n  ElementRef,\n  Directive,\n  Optional,\n  ViewEncapsulation,\n  ChangeDetectionStrategy,\n  ComponentFactoryResolver,\n  ViewContainerRef,\n  forwardRef,\n  ViewChild,\n} from '@angular/core';\nimport {AnimationEvent} from '@angular/animations';\nimport {TemplatePortal, CdkPortalOutlet} from '@angular/cdk/portal';\nimport {Directionality, Direction} from '@angular/cdk/bidi';\nimport {DOCUMENT} from '@angular/common';\nimport {Subscription, Subject} from 'rxjs';\nimport {matTabsAnimations} from './tabs-animations';\nimport {startWith, distinctUntilChanged} from 'rxjs/operators';\n\n/**\n * These position states are used internally as animation states for the tab body. Setting the\n * position state to left, right, or center will transition the tab body from its current\n * position to its respective state. If there is not current position (void, in the case of a new\n * tab body), then there will be no transition animation to its state.\n *\n * In the case of a new tab body that should immediately be centered with an animating transition,\n * then left-origin-center or right-origin-center can be used, which will use left or right as its\n * pseudo-prior state.\n */\nexport type MatTabBodyPositionState =\n  | 'left'\n  | 'center'\n  | 'right'\n  | 'left-origin-center'\n  | 'right-origin-center';\n\n/**\n * The origin state is an internally used state that is set on a new tab body indicating if it\n * began to the left or right of the prior selected index. For example, if the selected index was\n * set to 1, and a new tab is created and selected at index 2, then the tab body would have an\n * origin of right because its index was greater than the prior selected index.\n */\nexport type MatTabBodyOriginState = 'left' | 'right';\n\n/**\n * The portal host directive for the contents of the tab.\n * @docs-private\n */\n@Directive({\n  selector: '[matTabBodyHost]',\n})\nexport class MatTabBodyPortal extends CdkPortalOutlet implements OnInit, OnDestroy {\n  /** Subscription to events for when the tab body begins centering. */\n  private _centeringSub = Subscription.EMPTY;\n  /** Subscription to events for when the tab body finishes leaving from center position. */\n  private _leavingSub = Subscription.EMPTY;\n\n  constructor(\n    componentFactoryResolver: ComponentFactoryResolver,\n    viewContainerRef: ViewContainerRef,\n    @Inject(forwardRef(() => MatTabBody)) private _host: MatTabBody,\n    @Inject(DOCUMENT) _document: any,\n  ) {\n    super(componentFactoryResolver, viewContainerRef, _document);\n  }\n\n  /** Set initial visibility or set up subscription for changing visibility. */\n  override ngOnInit(): void {\n    super.ngOnInit();\n\n    this._centeringSub = this._host._beforeCentering\n      .pipe(startWith(this._host._isCenterPosition(this._host._position)))\n      .subscribe((isCentering: boolean) => {\n        if (isCentering && !this.hasAttached()) {\n          this.attach(this._host._content);\n        }\n      });\n\n    this._leavingSub = this._host._afterLeavingCenter.subscribe(() => {\n      if (!this._host.preserveContent) {\n        this.detach();\n      }\n    });\n  }\n\n  /** Clean up centering subscription. */\n  override ngOnDestroy(): void {\n    super.ngOnDestroy();\n    this._centeringSub.unsubscribe();\n    this._leavingSub.unsubscribe();\n  }\n}\n\n/**\n * Base class with all of the `MatTabBody` functionality.\n * @docs-private\n */\n@Directive()\nexport abstract class _MatTabBodyBase implements OnInit, OnDestroy {\n  /** Current position of the tab-body in the tab-group. Zero means that the tab is visible. */\n  private _positionIndex: number;\n\n  /** Subscription to the directionality change observable. */\n  private _dirChangeSubscription = Subscription.EMPTY;\n\n  /** Tab body position state. Used by the animation trigger for the current state. */\n  _position: MatTabBodyPositionState;\n\n  /** Emits when an animation on the tab is complete. */\n  readonly _translateTabComplete = new Subject<AnimationEvent>();\n\n  /** Event emitted when the tab begins to animate towards the center as the active tab. */\n  @Output() readonly _onCentering: EventEmitter<number> = new EventEmitter<number>();\n\n  /** Event emitted before the centering of the tab begins. */\n  @Output() readonly _beforeCentering: EventEmitter<boolean> = new EventEmitter<boolean>();\n\n  /** Event emitted before the centering of the tab begins. */\n  @Output() readonly _afterLeavingCenter: EventEmitter<void> = new EventEmitter<void>();\n\n  /** Event emitted when the tab completes its animation towards the center. */\n  @Output() readonly _onCentered: EventEmitter<void> = new EventEmitter<void>(true);\n\n  /** The portal host inside of this container into which the tab body content will be loaded. */\n  abstract _portalHost: CdkPortalOutlet;\n\n  /** The tab body content to display. */\n  @Input('content') _content: TemplatePortal;\n\n  /** Position that will be used when the tab is immediately becoming visible after creation. */\n  @Input() origin: number | null;\n\n  // Note that the default value will always be overwritten by `MatTabBody`, but we need one\n  // anyway to prevent the animations module from throwing an error if the body is used on its own.\n  /** Duration for the tab's animation. */\n  @Input() animationDuration: string = '500ms';\n\n  /** Whether the tab's content should be kept in the DOM while it's off-screen. */\n  @Input() preserveContent: boolean = false;\n\n  /** The shifted index position of the tab body, where zero represents the active center tab. */\n  @Input()\n  set position(position: number) {\n    this._positionIndex = position;\n    this._computePositionAnimationState();\n  }\n\n  constructor(\n    private _elementRef: ElementRef<HTMLElement>,\n    @Optional() private _dir: Directionality,\n    changeDetectorRef: ChangeDetectorRef,\n  ) {\n    if (_dir) {\n      this._dirChangeSubscription = _dir.change.subscribe((dir: Direction) => {\n        this._computePositionAnimationState(dir);\n        changeDetectorRef.markForCheck();\n      });\n    }\n\n    // Ensure that we get unique animation events, because the `.done` callback can get\n    // invoked twice in some browsers. See https://github.com/angular/angular/issues/24084.\n    this._translateTabComplete\n      .pipe(\n        distinctUntilChanged((x, y) => {\n          return x.fromState === y.fromState && x.toState === y.toState;\n        }),\n      )\n      .subscribe(event => {\n        // If the transition to the center is complete, emit an event.\n        if (this._isCenterPosition(event.toState) && this._isCenterPosition(this._position)) {\n          this._onCentered.emit();\n        }\n\n        if (this._isCenterPosition(event.fromState) && !this._isCenterPosition(this._position)) {\n          this._afterLeavingCenter.emit();\n        }\n      });\n  }\n\n  /**\n   * After initialized, check if the content is centered and has an origin. If so, set the\n   * special position states that transition the tab from the left or right before centering.\n   */\n  ngOnInit() {\n    if (this._position == 'center' && this.origin != null) {\n      this._position = this._computePositionFromOrigin(this.origin);\n    }\n  }\n\n  ngOnDestroy() {\n    this._dirChangeSubscription.unsubscribe();\n    this._translateTabComplete.complete();\n  }\n\n  _onTranslateTabStarted(event: AnimationEvent): void {\n    const isCentering = this._isCenterPosition(event.toState);\n    this._beforeCentering.emit(isCentering);\n    if (isCentering) {\n      this._onCentering.emit(this._elementRef.nativeElement.clientHeight);\n    }\n  }\n\n  /** The text direction of the containing app. */\n  _getLayoutDirection(): Direction {\n    return this._dir && this._dir.value === 'rtl' ? 'rtl' : 'ltr';\n  }\n\n  /** Whether the provided position state is considered center, regardless of origin. */\n  _isCenterPosition(position: MatTabBodyPositionState | string): boolean {\n    return (\n      position == 'center' || position == 'left-origin-center' || position == 'right-origin-center'\n    );\n  }\n\n  /** Computes the position state that will be used for the tab-body animation trigger. */\n  private _computePositionAnimationState(dir: Direction = this._getLayoutDirection()) {\n    if (this._positionIndex < 0) {\n      this._position = dir == 'ltr' ? 'left' : 'right';\n    } else if (this._positionIndex > 0) {\n      this._position = dir == 'ltr' ? 'right' : 'left';\n    } else {\n      this._position = 'center';\n    }\n  }\n\n  /**\n   * Computes the position state based on the specified origin position. This is used if the\n   * tab is becoming visible immediately after creation.\n   */\n  private _computePositionFromOrigin(origin: number): MatTabBodyPositionState {\n    const dir = this._getLayoutDirection();\n\n    if ((dir == 'ltr' && origin <= 0) || (dir == 'rtl' && origin > 0)) {\n      return 'left-origin-center';\n    }\n\n    return 'right-origin-center';\n  }\n}\n\n/**\n * Wrapper for the contents of a tab.\n * @docs-private\n */\n@Component({\n  selector: 'mat-tab-body',\n  templateUrl: 'tab-body.html',\n  styleUrls: ['tab-body.css'],\n  encapsulation: ViewEncapsulation.None,\n  // tslint:disable-next-line:validate-decorators\n  changeDetection: ChangeDetectionStrategy.Default,\n  animations: [matTabsAnimations.translateTab],\n  host: {\n    'class': 'mat-tab-body',\n  },\n})\nexport class MatTabBody extends _MatTabBodyBase {\n  @ViewChild(CdkPortalOutlet) _portalHost: CdkPortalOutlet;\n\n  constructor(\n    elementRef: ElementRef<HTMLElement>,\n    @Optional() dir: Directionality,\n    changeDetectorRef: ChangeDetectorRef,\n  ) {\n    super(elementRef, dir, changeDetectorRef);\n  }\n}\n","<div class=\"mat-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"]}