/**
 * @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 { Directionality } from '@angular/cdk/bidi';
import { Directive, ElementRef, NgZone, Optional } from '@angular/core';
import { fromEvent, Observable } from 'rxjs';
import { takeUntil } from 'rxjs/operators';
import { ScrollDispatcher } from './scroll-dispatcher';
import { CdkVirtualScrollable, VIRTUAL_SCROLLABLE } from './virtual-scrollable';
import * as i0 from "@angular/core";
import * as i1 from "./scroll-dispatcher";
import * as i2 from "@angular/cdk/bidi";
/**
 * Provides as virtual scrollable for the global / window scrollbar.
 */
export class CdkVirtualScrollableWindow extends CdkVirtualScrollable {
    constructor(scrollDispatcher, ngZone, dir) {
        super(new ElementRef(document.documentElement), scrollDispatcher, ngZone, dir);
        this._elementScrolled = new Observable((observer) => this.ngZone.runOutsideAngular(() => fromEvent(document, 'scroll').pipe(takeUntil(this._destroyed)).subscribe(observer)));
    }
    measureBoundingClientRectWithScrollOffset(from) {
        return this.getElementRef().nativeElement.getBoundingClientRect()[from];
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: CdkVirtualScrollableWindow, deps: [{ token: i1.ScrollDispatcher }, { token: i0.NgZone }, { token: i2.Directionality, optional: true }], target: i0.ɵɵFactoryTarget.Directive }); }
    static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.1.1", type: CdkVirtualScrollableWindow, isStandalone: true, selector: "cdk-virtual-scroll-viewport[scrollWindow]", providers: [{ provide: VIRTUAL_SCROLLABLE, useExisting: CdkVirtualScrollableWindow }], usesInheritance: true, ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: CdkVirtualScrollableWindow, decorators: [{
            type: Directive,
            args: [{
                    selector: 'cdk-virtual-scroll-viewport[scrollWindow]',
                    providers: [{ provide: VIRTUAL_SCROLLABLE, useExisting: CdkVirtualScrollableWindow }],
                    standalone: true,
                }]
        }], ctorParameters: function () { return [{ type: i1.ScrollDispatcher }, { type: i0.NgZone }, { type: i2.Directionality, decorators: [{
                    type: Optional
                }] }]; } });
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