@angular/material
Version:
Angular Material
186 lines • 28.2 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 { CdkAccordionItem } from '@angular/cdk/accordion';
import { coerceBooleanProperty } from '@angular/cdk/coercion';
import { UniqueSelectionDispatcher } from '@angular/cdk/collections';
import { TemplatePortal } from '@angular/cdk/portal';
import { DOCUMENT } from '@angular/common';
import { ChangeDetectionStrategy, ChangeDetectorRef, Component, ContentChild, Directive, ElementRef, EventEmitter, Inject, InjectionToken, Input, Optional, Output, SkipSelf, ViewChild, ViewContainerRef, ViewEncapsulation, } from '@angular/core';
import { ANIMATION_MODULE_TYPE } from '@angular/platform-browser/animations';
import { Subject } from 'rxjs';
import { distinctUntilChanged, filter, startWith, take } from 'rxjs/operators';
import { MAT_ACCORDION } from './accordion-base';
import { matExpansionAnimations } from './expansion-animations';
import { MatExpansionPanelContent } from './expansion-panel-content';
/** Counter for generating unique element ids. */
let uniqueId = 0;
/**
* Injection token that can be used to configure the defalt
* options for the expansion panel component.
*/
export const MAT_EXPANSION_PANEL_DEFAULT_OPTIONS = new InjectionToken('MAT_EXPANSION_PANEL_DEFAULT_OPTIONS');
const ɵ0 = undefined;
/**
* This component can be used as a single element to show expandable content, or as one of
* multiple children of an element with the MatAccordion directive attached.
*/
export class MatExpansionPanel extends CdkAccordionItem {
constructor(accordion, _changeDetectorRef, _uniqueSelectionDispatcher, _viewContainerRef, _document, _animationMode, defaultOptions) {
super(accordion, _changeDetectorRef, _uniqueSelectionDispatcher);
this._viewContainerRef = _viewContainerRef;
this._animationMode = _animationMode;
this._hideToggle = false;
/** An event emitted after the body's expansion animation happens. */
this.afterExpand = new EventEmitter();
/** An event emitted after the body's collapse animation happens. */
this.afterCollapse = new EventEmitter();
/** Stream that emits for changes in `@Input` properties. */
this._inputChanges = new Subject();
/** ID for the associated header element. Used for a11y labelling. */
this._headerId = `mat-expansion-panel-header-${uniqueId++}`;
/** Stream of body animation done events. */
this._bodyAnimationDone = new Subject();
this.accordion = accordion;
this._document = _document;
// We need a Subject with distinctUntilChanged, because the `done` event
// fires twice on some browsers. See https://github.com/angular/angular/issues/24084
this._bodyAnimationDone.pipe(distinctUntilChanged((x, y) => {
return x.fromState === y.fromState && x.toState === y.toState;
})).subscribe(event => {
if (event.fromState !== 'void') {
if (event.toState === 'expanded') {
this.afterExpand.emit();
}
else if (event.toState === 'collapsed') {
this.afterCollapse.emit();
}
}
});
if (defaultOptions) {
this.hideToggle = defaultOptions.hideToggle;
}
}
/** Whether the toggle indicator should be hidden. */
get hideToggle() {
return this._hideToggle || (this.accordion && this.accordion.hideToggle);
}
set hideToggle(value) {
this._hideToggle = coerceBooleanProperty(value);
}
/** The position of the expansion indicator. */
get togglePosition() {
return this._togglePosition || (this.accordion && this.accordion.togglePosition);
}
set togglePosition(value) {
this._togglePosition = value;
}
/** Determines whether the expansion panel should have spacing between it and its siblings. */
_hasSpacing() {
if (this.accordion) {
return this.expanded && this.accordion.displayMode === 'default';
}
return false;
}
/** Gets the expanded state string. */
_getExpandedState() {
return this.expanded ? 'expanded' : 'collapsed';
}
/** Toggles the expanded state of the expansion panel. */
toggle() {
this.expanded = !this.expanded;
}
/** Sets the expanded state of the expansion panel to false. */
close() {
this.expanded = false;
}
/** Sets the expanded state of the expansion panel to true. */
open() {
this.expanded = true;
}
ngAfterContentInit() {
if (this._lazyContent) {
// Render the content as soon as the panel becomes open.
this.opened.pipe(startWith(null), filter(() => this.expanded && !this._portal), take(1)).subscribe(() => {
this._portal = new TemplatePortal(this._lazyContent._template, this._viewContainerRef);
});
}
}
ngOnChanges(changes) {
this._inputChanges.next(changes);
}
ngOnDestroy() {
super.ngOnDestroy();
this._bodyAnimationDone.complete();
this._inputChanges.complete();
}
/** Checks whether the expansion panel's content contains the currently-focused element. */
_containsFocus() {
if (this._body) {
const focusedElement = this._document.activeElement;
const bodyElement = this._body.nativeElement;
return focusedElement === bodyElement || bodyElement.contains(focusedElement);
}
return false;
}
}
MatExpansionPanel.decorators = [
{ type: Component, args: [{
selector: 'mat-expansion-panel',
exportAs: 'matExpansionPanel',
template: "<ng-content select=\"mat-expansion-panel-header\"></ng-content>\n<div class=\"mat-expansion-panel-content\"\n role=\"region\"\n [@bodyExpansion]=\"_getExpandedState()\"\n (@bodyExpansion.done)=\"_bodyAnimationDone.next($event)\"\n [attr.aria-labelledby]=\"_headerId\"\n [id]=\"id\"\n #body>\n <div class=\"mat-expansion-panel-body\">\n <ng-content></ng-content>\n <ng-template [cdkPortalOutlet]=\"_portal\"></ng-template>\n </div>\n <ng-content select=\"mat-action-row\"></ng-content>\n</div>\n",
encapsulation: ViewEncapsulation.None,
changeDetection: ChangeDetectionStrategy.OnPush,
inputs: ['disabled', 'expanded'],
outputs: ['opened', 'closed', 'expandedChange'],
animations: [matExpansionAnimations.bodyExpansion],
providers: [
// Provide MatAccordion as undefined to prevent nested expansion panels from registering
// to the same accordion.
{ provide: MAT_ACCORDION, useValue: ɵ0 },
],
host: {
'class': 'mat-expansion-panel',
'[class.mat-expanded]': 'expanded',
'[class._mat-animation-noopable]': '_animationMode === "NoopAnimations"',
'[class.mat-expansion-panel-spacing]': '_hasSpacing()',
},
styles: [".mat-expansion-panel{box-sizing:content-box;display:block;margin:0;border-radius:4px;overflow:hidden;transition:margin 225ms cubic-bezier(0.4, 0, 0.2, 1),box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1);position:relative}.mat-accordion .mat-expansion-panel:not(.mat-expanded),.mat-accordion .mat-expansion-panel:not(.mat-expansion-panel-spacing){border-radius:0}.mat-accordion .mat-expansion-panel:first-of-type{border-top-right-radius:4px;border-top-left-radius:4px}.mat-accordion .mat-expansion-panel:last-of-type{border-bottom-right-radius:4px;border-bottom-left-radius:4px}.cdk-high-contrast-active .mat-expansion-panel{outline:solid 1px}.mat-expansion-panel.ng-animate-disabled,.ng-animate-disabled .mat-expansion-panel,.mat-expansion-panel._mat-animation-noopable{transition:none}.mat-expansion-panel-content{display:flex;flex-direction:column;overflow:visible}.mat-expansion-panel-body{padding:0 24px 16px}.mat-expansion-panel-spacing{margin:16px 0}.mat-accordion>.mat-expansion-panel-spacing:first-child,.mat-accordion>*:first-child:not(.mat-expansion-panel) .mat-expansion-panel-spacing{margin-top:0}.mat-accordion>.mat-expansion-panel-spacing:last-child,.mat-accordion>*:last-child:not(.mat-expansion-panel) .mat-expansion-panel-spacing{margin-bottom:0}.mat-action-row{border-top-style:solid;border-top-width:1px;display:flex;flex-direction:row;justify-content:flex-end;padding:16px 8px 16px 24px}.mat-action-row button.mat-button-base,.mat-action-row button.mat-mdc-button-base{margin-left:8px}[dir=rtl] .mat-action-row button.mat-button-base,[dir=rtl] .mat-action-row button.mat-mdc-button-base{margin-left:0;margin-right:8px}\n"]
},] }
];
MatExpansionPanel.ctorParameters = () => [
{ type: undefined, decorators: [{ type: Optional }, { type: SkipSelf }, { type: Inject, args: [MAT_ACCORDION,] }] },
{ type: ChangeDetectorRef },
{ type: UniqueSelectionDispatcher },
{ type: ViewContainerRef },
{ type: undefined, decorators: [{ type: Inject, args: [DOCUMENT,] }] },
{ type: String, decorators: [{ type: Optional }, { type: Inject, args: [ANIMATION_MODULE_TYPE,] }] },
{ type: undefined, decorators: [{ type: Inject, args: [MAT_EXPANSION_PANEL_DEFAULT_OPTIONS,] }, { type: Optional }] }
];
MatExpansionPanel.propDecorators = {
hideToggle: [{ type: Input }],
togglePosition: [{ type: Input }],
afterExpand: [{ type: Output }],
afterCollapse: [{ type: Output }],
_lazyContent: [{ type: ContentChild, args: [MatExpansionPanelContent,] }],
_body: [{ type: ViewChild, args: ['body',] }]
};
/**
* Actions of a `<mat-expansion-panel>`.
*/
export class MatExpansionPanelActionRow {
}
MatExpansionPanelActionRow.decorators = [
{ type: Directive, args: [{
selector: 'mat-action-row',
host: {
class: 'mat-action-row'
}
},] }
];
export { ɵ0 };
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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 {AnimationEvent} from '@angular/animations';\nimport {CdkAccordionItem} from '@angular/cdk/accordion';\nimport {BooleanInput, coerceBooleanProperty} from '@angular/cdk/coercion';\nimport {UniqueSelectionDispatcher} from '@angular/cdk/collections';\nimport {TemplatePortal} from '@angular/cdk/portal';\nimport {DOCUMENT} from '@angular/common';\nimport {\n  AfterContentInit,\n  ChangeDetectionStrategy,\n  ChangeDetectorRef,\n  Component,\n  ContentChild,\n  Directive,\n  ElementRef,\n  EventEmitter,\n  Inject,\n  InjectionToken,\n  Input,\n  OnChanges,\n  OnDestroy,\n  Optional,\n  Output,\n  SimpleChanges,\n  SkipSelf,\n  ViewChild,\n  ViewContainerRef,\n  ViewEncapsulation,\n} from '@angular/core';\nimport {ANIMATION_MODULE_TYPE} from '@angular/platform-browser/animations';\nimport {Subject} from 'rxjs';\nimport {distinctUntilChanged, filter, startWith, take} from 'rxjs/operators';\nimport {MatAccordionBase, MatAccordionTogglePosition, MAT_ACCORDION} from './accordion-base';\nimport {matExpansionAnimations} from './expansion-animations';\nimport {MatExpansionPanelContent} from './expansion-panel-content';\n\n/** MatExpansionPanel's states. */\nexport type MatExpansionPanelState = 'expanded' | 'collapsed';\n\n/** Counter for generating unique element ids. */\nlet uniqueId = 0;\n\n/**\n * Object that can be used to override the default options\n * for all of the expansion panels in a module.\n */\nexport interface MatExpansionPanelDefaultOptions {\n  /** Height of the header while the panel is expanded. */\n  expandedHeight: string;\n\n  /** Height of the header while the panel is collapsed. */\n  collapsedHeight: string;\n\n  /** Whether the toggle indicator should be hidden. */\n  hideToggle: boolean;\n}\n\n/**\n * Injection token that can be used to configure the defalt\n * options for the expansion panel component.\n */\nexport const MAT_EXPANSION_PANEL_DEFAULT_OPTIONS =\n    new InjectionToken<MatExpansionPanelDefaultOptions>('MAT_EXPANSION_PANEL_DEFAULT_OPTIONS');\n\n/**\n * This component can be used as a single element to show expandable content, or as one of\n * multiple children of an element with the MatAccordion directive attached.\n */\n@Component({\n  styleUrls: ['expansion-panel.css'],\n  selector: 'mat-expansion-panel',\n  exportAs: 'matExpansionPanel',\n  templateUrl: 'expansion-panel.html',\n  encapsulation: ViewEncapsulation.None,\n  changeDetection: ChangeDetectionStrategy.OnPush,\n  inputs: ['disabled', 'expanded'],\n  outputs: ['opened', 'closed', 'expandedChange'],\n  animations: [matExpansionAnimations.bodyExpansion],\n  providers: [\n    // Provide MatAccordion as undefined to prevent nested expansion panels from registering\n    // to the same accordion.\n    {provide: MAT_ACCORDION, useValue: undefined},\n  ],\n  host: {\n    'class': 'mat-expansion-panel',\n    '[class.mat-expanded]': 'expanded',\n    '[class._mat-animation-noopable]': '_animationMode === \"NoopAnimations\"',\n    '[class.mat-expansion-panel-spacing]': '_hasSpacing()',\n  }\n})\nexport class MatExpansionPanel extends CdkAccordionItem implements AfterContentInit, OnChanges,\n  OnDestroy {\n  private _document: Document;\n  private _hideToggle = false;\n  private _togglePosition: MatAccordionTogglePosition;\n\n  /** Whether the toggle indicator should be hidden. */\n  @Input()\n  get hideToggle(): boolean {\n    return this._hideToggle || (this.accordion && this.accordion.hideToggle);\n  }\n  set hideToggle(value: boolean) {\n    this._hideToggle = coerceBooleanProperty(value);\n  }\n\n  /** The position of the expansion indicator. */\n  @Input()\n  get togglePosition(): MatAccordionTogglePosition {\n    return this._togglePosition || (this.accordion && this.accordion.togglePosition);\n  }\n  set togglePosition(value: MatAccordionTogglePosition) {\n    this._togglePosition = value;\n  }\n\n  /** An event emitted after the body's expansion animation happens. */\n  @Output() readonly afterExpand = new EventEmitter<void>();\n\n  /** An event emitted after the body's collapse animation happens. */\n  @Output() readonly afterCollapse = new EventEmitter<void>();\n\n  /** Stream that emits for changes in `@Input` properties. */\n  readonly _inputChanges = new Subject<SimpleChanges>();\n\n  /** Optionally defined accordion the expansion panel belongs to. */\n  accordion: MatAccordionBase;\n\n  /** Content that will be rendered lazily. */\n  @ContentChild(MatExpansionPanelContent) _lazyContent: MatExpansionPanelContent;\n\n  /** Element containing the panel's user-provided content. */\n  @ViewChild('body') _body: ElementRef<HTMLElement>;\n\n  /** Portal holding the user's content. */\n  _portal: TemplatePortal;\n\n  /** ID for the associated header element. Used for a11y labelling. */\n  _headerId = `mat-expansion-panel-header-${uniqueId++}`;\n\n  /** Stream of body animation done events. */\n  readonly _bodyAnimationDone = new Subject<AnimationEvent>();\n\n  constructor(@Optional() @SkipSelf() @Inject(MAT_ACCORDION) accordion: MatAccordionBase,\n              _changeDetectorRef: ChangeDetectorRef,\n              _uniqueSelectionDispatcher: UniqueSelectionDispatcher,\n              private _viewContainerRef: ViewContainerRef,\n              @Inject(DOCUMENT) _document: any,\n              @Optional() @Inject(ANIMATION_MODULE_TYPE) public _animationMode: string,\n              @Inject(MAT_EXPANSION_PANEL_DEFAULT_OPTIONS) @Optional()\n                  defaultOptions?: MatExpansionPanelDefaultOptions) {\n    super(accordion, _changeDetectorRef, _uniqueSelectionDispatcher);\n    this.accordion = accordion;\n    this._document = _document;\n\n    // We need a Subject with distinctUntilChanged, because the `done` event\n    // fires twice on some browsers. See https://github.com/angular/angular/issues/24084\n    this._bodyAnimationDone.pipe(distinctUntilChanged((x, y) => {\n      return x.fromState === y.fromState && x.toState === y.toState;\n    })).subscribe(event => {\n      if (event.fromState !== 'void') {\n        if (event.toState === 'expanded') {\n          this.afterExpand.emit();\n        } else if (event.toState === 'collapsed') {\n          this.afterCollapse.emit();\n        }\n      }\n    });\n\n    if (defaultOptions) {\n      this.hideToggle = defaultOptions.hideToggle;\n    }\n  }\n\n  /** Determines whether the expansion panel should have spacing between it and its siblings. */\n  _hasSpacing(): boolean {\n    if (this.accordion) {\n      return this.expanded && this.accordion.displayMode === 'default';\n    }\n    return false;\n  }\n\n  /** Gets the expanded state string. */\n  _getExpandedState(): MatExpansionPanelState {\n    return this.expanded ? 'expanded' : 'collapsed';\n  }\n\n  /** Toggles the expanded state of the expansion panel. */\n  toggle(): void {\n    this.expanded = !this.expanded;\n  }\n\n  /** Sets the expanded state of the expansion panel to false. */\n  close(): void {\n    this.expanded = false;\n  }\n\n  /** Sets the expanded state of the expansion panel to true. */\n  open(): void {\n    this.expanded = true;\n  }\n\n  ngAfterContentInit() {\n    if (this._lazyContent) {\n      // Render the content as soon as the panel becomes open.\n      this.opened.pipe(\n        startWith(null),\n        filter(() => this.expanded && !this._portal),\n        take(1)\n      ).subscribe(() => {\n        this._portal = new TemplatePortal(this._lazyContent._template, this._viewContainerRef);\n      });\n    }\n  }\n\n  ngOnChanges(changes: SimpleChanges) {\n    this._inputChanges.next(changes);\n  }\n\n  ngOnDestroy() {\n    super.ngOnDestroy();\n    this._bodyAnimationDone.complete();\n    this._inputChanges.complete();\n  }\n\n  /** Checks whether the expansion panel's content contains the currently-focused element. */\n  _containsFocus(): boolean {\n    if (this._body) {\n      const focusedElement = this._document.activeElement;\n      const bodyElement = this._body.nativeElement;\n      return focusedElement === bodyElement || bodyElement.contains(focusedElement);\n    }\n\n    return false;\n  }\n\n  static ngAcceptInputType_hideToggle: BooleanInput;\n}\n\n/**\n * Actions of a `<mat-expansion-panel>`.\n */\n@Directive({\n  selector: 'mat-action-row',\n  host: {\n    class: 'mat-action-row'\n  }\n})\nexport class MatExpansionPanelActionRow {}\n"]}