| {"version":3,"file":"accordion.js","sources":["../../../src/cdk/accordion/accordion-module.ts","../../../src/cdk/accordion/accordion-item.ts","../../../src/cdk/accordion/accordion.ts"],"sourcesContent":["/**\n * @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 {NgModule} from '@angular/core';\nimport {CdkAccordion} from './accordion';\nimport {CdkAccordionItem} from './accordion-item';\n\n\n@NgModule({\n exports: [CdkAccordion, CdkAccordionItem],\n declarations: [CdkAccordion, CdkAccordionItem],\n})\nexport class CdkAccordionModule {}\n","/**\n * @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 Output,\n Directive,\n EventEmitter,\n Input,\n OnDestroy,\n Optional,\n ChangeDetectorRef,\n SkipSelf,\n} from '@angular/core';\nimport {UniqueSelectionDispatcher} from '@angular/cdk/collections';\nimport {CdkAccordion} from './accordion';\nimport {coerceBooleanProperty} from '@angular/cdk/coercion';\nimport {Subscription} from 'rxjs';\n\n/** Used to generate unique ID for each accordion item. */\nlet nextId = 0;\n\n/**\n * An basic directive expected to be extended and decorated as a component. Sets up all\n * events and attributes needed to be managed by a CdkAccordion parent.\n */\n@Directive({\n selector: 'cdk-accordion-item, [cdkAccordionItem]',\n exportAs: 'cdkAccordionItem',\n providers: [\n // Provide CdkAccordion as undefined to prevent nested accordion items from registering\n // to the same accordion.\n {provide: CdkAccordion, useValue: undefined},\n ],\n})\nexport class CdkAccordionItem implements OnDestroy {\n /** Subscription to openAll/closeAll events. */\n private _openCloseAllSubscription = Subscription.EMPTY;\n /** Event emitted every time the AccordionItem is closed. */\n @Output() closed: EventEmitter<void> = new EventEmitter<void>();\n /** Event emitted every time the AccordionItem is opened. */\n @Output() opened: EventEmitter<void> = new EventEmitter<void>();\n /** Event emitted when the AccordionItem is destroyed. */\n @Output() destroyed: EventEmitter<void> = new EventEmitter<void>();\n\n /**\n * Emits whenever the expanded state of the accordion changes.\n * Primarily used to facilitate two-way binding.\n * @docs-private\n */\n @Output() expandedChange: EventEmitter<boolean> = new EventEmitter<boolean>();\n\n /** The unique AccordionItem id. */\n readonly id: string = `cdk-accordion-child-${nextId++}`;\n\n /** Whether the AccordionItem is expanded. */\n @Input()\n get expanded(): any { return this._expanded; }\n set expanded(expanded: any) {\n expanded = coerceBooleanProperty(expanded);\n\n // Only emit events and update the internal value if the value changes.\n if (this._expanded !== expanded) {\n this._expanded = expanded;\n this.expandedChange.emit(expanded);\n\n if (expanded) {\n this.opened.emit();\n /**\n * In the unique selection dispatcher, the id parameter is the id of the CdkAccordionItem,\n * the name value is the id of the accordion.\n */\n const accordionId = this.accordion ? this.accordion.id : this.id;\n this._expansionDispatcher.notify(this.id, accordionId);\n } else {\n this.closed.emit();\n }\n\n // Ensures that the animation will run when the value is set outside of an `@Input`.\n // This includes cases like the open, close and toggle methods.\n this._changeDetectorRef.markForCheck();\n }\n }\n private _expanded = false;\n\n /** Whether the AccordionItem is disabled. */\n @Input()\n get disabled() { return this._disabled; }\n set disabled(disabled: any) { this._disabled = coerceBooleanProperty(disabled); }\n private _disabled: boolean = false;\n\n /** Unregister function for _expansionDispatcher. */\n private _removeUniqueSelectionListener: () => void = () => {};\n\n constructor(@Optional() @SkipSelf() public accordion: CdkAccordion,\n private _changeDetectorRef: ChangeDetectorRef,\n protected _expansionDispatcher: UniqueSelectionDispatcher) {\n this._removeUniqueSelectionListener =\n _expansionDispatcher.listen((id: string, accordionId: string) => {\n if (this.accordion && !this.accordion.multi &&\n this.accordion.id === accordionId && this.id !== id) {\n this.expanded = false;\n }\n });\n\n // When an accordion item is hosted in an accordion, subscribe to open/close events.\n if (this.accordion) {\n this._openCloseAllSubscription = this._subscribeToOpenCloseAllActions();\n }\n }\n\n /** Emits an event for the accordion item being destroyed. */\n ngOnDestroy() {\n this.opened.complete();\n this.closed.complete();\n this.destroyed.emit();\n this.destroyed.complete();\n this._removeUniqueSelectionListener();\n this._openCloseAllSubscription.unsubscribe();\n }\n\n /** Toggles the expanded state of the accordion item. */\n toggle(): void {\n if (!this.disabled) {\n this.expanded = !this.expanded;\n }\n }\n\n /** Sets the expanded state of the accordion item to false. */\n close(): void {\n if (!this.disabled) {\n this.expanded = false;\n }\n }\n\n /** Sets the expanded state of the accordion item to true. */\n open(): void {\n if (!this.disabled) {\n this.expanded = true;\n }\n }\n\n private _subscribeToOpenCloseAllActions(): Subscription {\n return this.accordion._openCloseAllActions.subscribe(expanded => {\n // Only change expanded state if item is enabled\n if (!this.disabled) {\n this.expanded = expanded;\n }\n });\n }\n}\n","/**\n * @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 {coerceBooleanProperty} from '@angular/cdk/coercion';\nimport {Directive, Input, OnChanges, OnDestroy, SimpleChanges} from '@angular/core';\nimport {Subject} from 'rxjs';\n\n/** Used to generate unique ID for each accordion. */\nlet nextId = 0;\n\n/**\n * Directive whose purpose is to manage the expanded state of CdkAccordionItem children.\n */\n@Directive({\n selector: 'cdk-accordion, [cdkAccordion]',\n exportAs: 'cdkAccordion',\n})\nexport class CdkAccordion implements OnDestroy, OnChanges {\n /** Emits when the state of the accordion changes */\n readonly _stateChanges = new Subject<SimpleChanges>();\n\n /** Stream that emits true/false when openAll/closeAll is triggered. */\n readonly _openCloseAllActions: Subject<boolean> = new Subject<boolean>();\n\n /** A readonly id value to use for unique selection coordination. */\n readonly id = `cdk-accordion-${nextId++}`;\n\n /** Whether the accordion should allow multiple expanded accordion items simultaneously. */\n @Input()\n get multi(): boolean { return this._multi; }\n set multi(multi: boolean) { this._multi = coerceBooleanProperty(multi); }\n private _multi: boolean = false;\n\n /** Opens all enabled accordion items in an accordion where multi is enabled. */\n openAll(): void {\n this._openCloseAll(true);\n }\n\n /** Closes all enabled accordion items in an accordion where multi is enabled. */\n closeAll(): void {\n this._openCloseAll(false);\n }\n\n ngOnChanges(changes: SimpleChanges) {\n this._stateChanges.next(changes);\n }\n\n ngOnDestroy() {\n this._stateChanges.complete();\n }\n\n private _openCloseAll(expanded: boolean): void {\n if (this.multi) {\n this._openCloseAllActions.next(expanded);\n }\n 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