92 lines
3.8 KiB
TypeScript
92 lines
3.8 KiB
TypeScript
import { AfterContentInit } from '@angular/core';
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import { BooleanInput } from '@angular/cdk/coercion';
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import { ElementRef } from '@angular/core';
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import { EventEmitter } from '@angular/core';
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import * as i0 from '@angular/core';
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import { NgZone } from '@angular/core';
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import { NumberInput } from '@angular/cdk/coercion';
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import { Observable } from 'rxjs';
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import { OnDestroy } from '@angular/core';
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/**
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* Directive that triggers a callback whenever the content of
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* its associated element has changed.
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*/
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export declare class CdkObserveContent implements AfterContentInit, OnDestroy {
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private _contentObserver;
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private _elementRef;
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private _ngZone;
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/** Event emitted for each change in the element's content. */
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readonly event: EventEmitter<MutationRecord[]>;
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/**
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* Whether observing content is disabled. This option can be used
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* to disconnect the underlying MutationObserver until it is needed.
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*/
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get disabled(): boolean;
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set disabled(value: BooleanInput);
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private _disabled;
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/** Debounce interval for emitting the changes. */
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get debounce(): number;
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set debounce(value: NumberInput);
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private _debounce;
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private _currentSubscription;
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constructor(_contentObserver: ContentObserver, _elementRef: ElementRef<HTMLElement>, _ngZone: NgZone);
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ngAfterContentInit(): void;
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ngOnDestroy(): void;
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private _subscribe;
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private _unsubscribe;
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static ɵfac: i0.ɵɵFactoryDeclaration<CdkObserveContent, never>;
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static ɵdir: i0.ɵɵDirectiveDeclaration<CdkObserveContent, "[cdkObserveContent]", ["cdkObserveContent"], { "disabled": { "alias": "cdkObserveContentDisabled"; "required": false; }; "debounce": { "alias": "debounce"; "required": false; }; }, { "event": "cdkObserveContent"; }, never, never, false, never>;
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}
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/** An injectable service that allows watching elements for changes to their content. */
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export declare class ContentObserver implements OnDestroy {
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private _mutationObserverFactory;
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/** Keeps track of the existing MutationObservers so they can be reused. */
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private _observedElements;
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constructor(_mutationObserverFactory: MutationObserverFactory);
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ngOnDestroy(): void;
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/**
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* Observe content changes on an element.
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* @param element The element to observe for content changes.
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*/
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observe(element: Element): Observable<MutationRecord[]>;
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/**
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* Observe content changes on an element.
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* @param element The element to observe for content changes.
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*/
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observe(element: ElementRef<Element>): Observable<MutationRecord[]>;
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/**
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* Observes the given element by using the existing MutationObserver if available, or creating a
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* new one if not.
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*/
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private _observeElement;
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/**
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* Un-observes the given element and cleans up the underlying MutationObserver if nobody else is
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* observing this element.
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*/
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private _unobserveElement;
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/** Clean up the underlying MutationObserver for the specified element. */
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private _cleanupObserver;
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static ɵfac: i0.ɵɵFactoryDeclaration<ContentObserver, never>;
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static ɵprov: i0.ɵɵInjectableDeclaration<ContentObserver>;
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}
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/**
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* Factory that creates a new MutationObserver and allows us to stub it out in unit tests.
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* @docs-private
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*/
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export declare class MutationObserverFactory {
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create(callback: MutationCallback): MutationObserver | null;
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static ɵfac: i0.ɵɵFactoryDeclaration<MutationObserverFactory, never>;
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static ɵprov: i0.ɵɵInjectableDeclaration<MutationObserverFactory>;
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}
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export declare class ObserversModule {
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static ɵfac: i0.ɵɵFactoryDeclaration<ObserversModule, never>;
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static ɵmod: i0.ɵɵNgModuleDeclaration<ObserversModule, [typeof CdkObserveContent], never, [typeof CdkObserveContent]>;
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static ɵinj: i0.ɵɵInjectorDeclaration<ObserversModule>;
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}
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export { }
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