@angular/cdk
Version:
Angular Material Component Development Kit
211 lines (206 loc) • 9.89 kB
JavaScript
import * as i0 from '@angular/core';
import { InjectionToken, inject, booleanAttribute, Directive, Input, ChangeDetectorRef, EventEmitter, Output, NgModule } from '@angular/core';
import { Subject, Subscription } from 'rxjs';
import { _ as _IdGenerator } from './id-generator-0b91c6f7.mjs';
import { U as UniqueSelectionDispatcher } from './unique-selection-dispatcher-28a150e1.mjs';
/**
* Injection token that can be used to reference instances of `CdkAccordion`. It serves
* as alternative token to the actual `CdkAccordion` class which could cause unnecessary
* retention of the class and its directive metadata.
*/
const CDK_ACCORDION = new InjectionToken('CdkAccordion');
/**
* Directive whose purpose is to manage the expanded state of CdkAccordionItem children.
*/
class CdkAccordion {
/** Emits when the state of the accordion changes */
_stateChanges = new Subject();
/** Stream that emits true/false when openAll/closeAll is triggered. */
_openCloseAllActions = new Subject();
/** A readonly id value to use for unique selection coordination. */
id = inject(_IdGenerator).getId('cdk-accordion-');
/** Whether the accordion should allow multiple expanded accordion items simultaneously. */
multi = false;
/** Opens all enabled accordion items in an accordion where multi is enabled. */
openAll() {
if (this.multi) {
this._openCloseAllActions.next(true);
}
}
/** Closes all enabled accordion items. */
closeAll() {
this._openCloseAllActions.next(false);
}
ngOnChanges(changes) {
this._stateChanges.next(changes);
}
ngOnDestroy() {
this._stateChanges.complete();
this._openCloseAllActions.complete();
}
static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "19.2.0", ngImport: i0, type: CdkAccordion, deps: [], target: i0.ɵɵFactoryTarget.Directive });
static ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "16.1.0", version: "19.2.0", type: CdkAccordion, isStandalone: true, selector: "cdk-accordion, [cdkAccordion]", inputs: { multi: ["multi", "multi", booleanAttribute] }, providers: [{ provide: CDK_ACCORDION, useExisting: CdkAccordion }], exportAs: ["cdkAccordion"], usesOnChanges: true, ngImport: i0 });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "19.2.0", ngImport: i0, type: CdkAccordion, decorators: [{
type: Directive,
args: [{
selector: 'cdk-accordion, [cdkAccordion]',
exportAs: 'cdkAccordion',
providers: [{ provide: CDK_ACCORDION, useExisting: CdkAccordion }],
}]
}], propDecorators: { multi: [{
type: Input,
args: [{ transform: booleanAttribute }]
}] } });
/**
* A basic directive expected to be extended and decorated as a component. Sets up all
* events and attributes needed to be managed by a CdkAccordion parent.
*/
class CdkAccordionItem {
accordion = inject(CDK_ACCORDION, { optional: true, skipSelf: true });
_changeDetectorRef = inject(ChangeDetectorRef);
_expansionDispatcher = inject(UniqueSelectionDispatcher);
/** Subscription to openAll/closeAll events. */
_openCloseAllSubscription = Subscription.EMPTY;
/** Event emitted every time the AccordionItem is closed. */
closed = new EventEmitter();
/** Event emitted every time the AccordionItem is opened. */
opened = new EventEmitter();
/** Event emitted when the AccordionItem is destroyed. */
destroyed = new EventEmitter();
/**
* Emits whenever the expanded state of the accordion changes.
* Primarily used to facilitate two-way binding.
* @docs-private
*/
expandedChange = new EventEmitter();
/** The unique AccordionItem id. */
id = inject(_IdGenerator).getId('cdk-accordion-child-');
/** Whether the AccordionItem is expanded. */
get expanded() {
return this._expanded;
}
set expanded(expanded) {
// Only emit events and update the internal value if the value changes.
if (this._expanded !== expanded) {
this._expanded = expanded;
this.expandedChange.emit(expanded);
if (expanded) {
this.opened.emit();
/**
* In the unique selection dispatcher, the id parameter is the id of the CdkAccordionItem,
* the name value is the id of the accordion.
*/
const accordionId = this.accordion ? this.accordion.id : this.id;
this._expansionDispatcher.notify(this.id, accordionId);
}
else {
this.closed.emit();
}
// Ensures that the animation will run when the value is set outside of an `@Input`.
// This includes cases like the open, close and toggle methods.
this._changeDetectorRef.markForCheck();
}
}
_expanded = false;
/** Whether the AccordionItem is disabled. */
disabled = false;
/** Unregister function for _expansionDispatcher. */
_removeUniqueSelectionListener = () => { };
constructor() { }
ngOnInit() {
this._removeUniqueSelectionListener = this._expansionDispatcher.listen((id, accordionId) => {
if (this.accordion &&
!this.accordion.multi &&
this.accordion.id === accordionId &&
this.id !== id) {
this.expanded = false;
}
});
// When an accordion item is hosted in an accordion, subscribe to open/close events.
if (this.accordion) {
this._openCloseAllSubscription = this._subscribeToOpenCloseAllActions();
}
}
/** Emits an event for the accordion item being destroyed. */
ngOnDestroy() {
this.opened.complete();
this.closed.complete();
this.destroyed.emit();
this.destroyed.complete();
this._removeUniqueSelectionListener();
this._openCloseAllSubscription.unsubscribe();
}
/** Toggles the expanded state of the accordion item. */
toggle() {
if (!this.disabled) {
this.expanded = !this.expanded;
}
}
/** Sets the expanded state of the accordion item to false. */
close() {
if (!this.disabled) {
this.expanded = false;
}
}
/** Sets the expanded state of the accordion item to true. */
open() {
if (!this.disabled) {
this.expanded = true;
}
}
_subscribeToOpenCloseAllActions() {
return this.accordion._openCloseAllActions.subscribe(expanded => {
// Only change expanded state if item is enabled
if (!this.disabled) {
this.expanded = expanded;
}
});
}
static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "19.2.0", ngImport: i0, type: CdkAccordionItem, deps: [], target: i0.ɵɵFactoryTarget.Directive });
static ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "16.1.0", version: "19.2.0", type: CdkAccordionItem, isStandalone: true, selector: "cdk-accordion-item, [cdkAccordionItem]", inputs: { expanded: ["expanded", "expanded", booleanAttribute], disabled: ["disabled", "disabled", booleanAttribute] }, outputs: { closed: "closed", opened: "opened", destroyed: "destroyed", expandedChange: "expandedChange" }, providers: [
// Provide `CDK_ACCORDION` as undefined to prevent nested accordion items from
// registering to the same accordion.
{ provide: CDK_ACCORDION, useValue: undefined },
], exportAs: ["cdkAccordionItem"], ngImport: i0 });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "19.2.0", ngImport: i0, type: CdkAccordionItem, decorators: [{
type: Directive,
args: [{
selector: 'cdk-accordion-item, [cdkAccordionItem]',
exportAs: 'cdkAccordionItem',
providers: [
// Provide `CDK_ACCORDION` as undefined to prevent nested accordion items from
// registering to the same accordion.
{ provide: CDK_ACCORDION, useValue: undefined },
],
}]
}], ctorParameters: () => [], propDecorators: { closed: [{
type: Output
}], opened: [{
type: Output
}], destroyed: [{
type: Output
}], expandedChange: [{
type: Output
}], expanded: [{
type: Input,
args: [{ transform: booleanAttribute }]
}], disabled: [{
type: Input,
args: [{ transform: booleanAttribute }]
}] } });
class CdkAccordionModule {
static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "19.2.0", ngImport: i0, type: CdkAccordionModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });
static ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: "14.0.0", version: "19.2.0", ngImport: i0, type: CdkAccordionModule, imports: [CdkAccordion, CdkAccordionItem], exports: [CdkAccordion, CdkAccordionItem] });
static ɵinj = i0.ɵɵngDeclareInjector({ minVersion: "12.0.0", version: "19.2.0", ngImport: i0, type: CdkAccordionModule });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "19.2.0", ngImport: i0, type: CdkAccordionModule, decorators: [{
type: NgModule,
args: [{
imports: [CdkAccordion, CdkAccordionItem],
exports: [CdkAccordion, CdkAccordionItem],
}]
}] });
export { CDK_ACCORDION, CdkAccordion, CdkAccordionItem, CdkAccordionModule };
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