@angular/material
Version:
Angular Material
206 lines • 33.9 kB
JavaScript
/**
* @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 { ChangeDetectionStrategy, ChangeDetectorRef, Component, ComponentFactoryResolver, Directive, ElementRef, EventEmitter, forwardRef, Inject, Input, Optional, Output, ViewChild, ViewContainerRef, ViewEncapsulation, } from '@angular/core';
import { CdkPortalOutlet, TemplatePortal } from '@angular/cdk/portal';
import { Directionality } from '@angular/cdk/bidi';
import { DOCUMENT } from '@angular/common';
import { Subject, Subscription } from 'rxjs';
import { distinctUntilChanged, startWith } from 'rxjs/operators';
import { matTabsAnimations } from './tabs-animations';
import { CdkScrollable } from '@angular/cdk/scrolling';
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();
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "18.0.0", 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: "18.0.0", type: MatTabBodyPortal, isStandalone: true, selector: "[matTabBodyHost]", usesInheritance: true, ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "18.0.0", ngImport: i0, type: MatTabBodyPortal, decorators: [{
type: Directive,
args: [{
selector: '[matTabBodyHost]',
standalone: true,
}]
}], ctorParameters: () => [{ type: i0.ComponentFactoryResolver }, { type: i0.ViewContainerRef }, { type: MatTabBody, decorators: [{
type: Inject,
args: [forwardRef(() => MatTabBody)]
}] }, { type: undefined, decorators: [{
type: Inject,
args: [DOCUMENT]
}] }] });
/**
* Wrapper for the contents of a tab.
* @docs-private
*/
export class MatTabBody {
/** 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: "18.0.0", 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: "18.0.0", type: MatTabBody, isStandalone: true, selector: "mat-tab-body", inputs: { _content: ["content", "_content"], origin: "origin", animationDuration: "animationDuration", preserveContent: "preserveContent", position: "position" }, outputs: { _onCentering: "_onCentering", _beforeCentering: "_beforeCentering", _afterLeavingCenter: "_afterLeavingCenter", _onCentered: "_onCentered" }, host: { classAttribute: "mat-mdc-tab-body" }, viewQueries: [{ propertyName: "_portalHost", first: true, predicate: CdkPortalOutlet, descendants: 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]" }, { kind: "directive", type: CdkScrollable, selector: "[cdk-scrollable], [cdkScrollable]" }], animations: [matTabsAnimations.translateTab], changeDetection: i0.ChangeDetectionStrategy.Default, encapsulation: i0.ViewEncapsulation.None }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "18.0.0", 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',
}, standalone: true, imports: [MatTabBodyPortal, CdkScrollable], 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: () => [{ 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
}], _portalHost: [{
type: ViewChild,
args: [CdkPortalOutlet]
}], _content: [{
type: Input,
args: ['content']
}], origin: [{
type: Input
}], animationDuration: [{
type: Input
}], preserveContent: [{
type: Input
}], position: [{
type: Input
}] } });
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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  ChangeDetectionStrategy,\n  ChangeDetectorRef,\n  Component,\n  ComponentFactoryResolver,\n  Directive,\n  ElementRef,\n  EventEmitter,\n  forwardRef,\n  Inject,\n  Input,\n  OnDestroy,\n  OnInit,\n  Optional,\n  Output,\n  ViewChild,\n  ViewContainerRef,\n  ViewEncapsulation,\n} from '@angular/core';\nimport {CdkPortalOutlet, TemplatePortal} from '@angular/cdk/portal';\nimport {Direction, Directionality} from '@angular/cdk/bidi';\nimport {DOCUMENT} from '@angular/common';\nimport {Subject, Subscription} from 'rxjs';\nimport {distinctUntilChanged, startWith} from 'rxjs/operators';\nimport {AnimationEvent} from '@angular/animations';\nimport {matTabsAnimations} from './tabs-animations';\nimport {CdkScrollable} from '@angular/cdk/scrolling';\n\n/**\n * The portal host directive for the contents of the tab.\n * @docs-private\n */\n@Directive({\n  selector: '[matTabBodyHost]',\n  standalone: true,\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 * 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 * Wrapper for the contents of a tab.\n * @docs-private\n */\n@Component({\n  selector: 'mat-tab-body',\n  templateUrl: 'tab-body.html',\n  styleUrl: '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-mdc-tab-body',\n  },\n  standalone: true,\n  imports: [MatTabBodyPortal, CdkScrollable],\n})\nexport class MatTabBody 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  @ViewChild(CdkPortalOutlet) _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 * 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","<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"]}