ng-zorro-antd
Version:
An enterprise-class UI components based on Ant Design and Angular
60 lines • 7.25 kB
JavaScript
/**
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE
*/
import { Injectable } from '@angular/core';
import { Subject } from 'rxjs';
import { auditTime, finalize } from 'rxjs/operators';
import * as i0 from "@angular/core";
const NOOP = () => { };
export class NzResizeService {
constructor(ngZone, rendererFactory2) {
this.ngZone = ngZone;
this.rendererFactory2 = rendererFactory2;
this.resizeSource$ = new Subject();
this.listeners = 0;
this.disposeHandle = NOOP;
this.handler = () => {
this.ngZone.run(() => {
this.resizeSource$.next();
});
};
this.renderer = this.rendererFactory2.createRenderer(null, null);
}
ngOnDestroy() {
// Caretaker note: the `handler` is an instance property (it's not defined on the class prototype).
// The `handler` captures `this` and prevents the `NzResizeService` from being GC'd.
this.handler = NOOP;
}
subscribe() {
this.registerListener();
return this.resizeSource$.pipe(auditTime(16), finalize(() => this.unregisterListener()));
}
unsubscribe() {
this.unregisterListener();
}
registerListener() {
if (this.listeners === 0) {
this.ngZone.runOutsideAngular(() => {
this.disposeHandle = this.renderer.listen('window', 'resize', this.handler);
});
}
this.listeners += 1;
}
unregisterListener() {
this.listeners -= 1;
if (this.listeners === 0) {
this.disposeHandle();
this.disposeHandle = NOOP;
}
}
}
NzResizeService.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "13.3.11", ngImport: i0, type: NzResizeService, deps: [{ token: i0.NgZone }, { token: i0.RendererFactory2 }], target: i0.ɵɵFactoryTarget.Injectable });
NzResizeService.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "13.3.11", ngImport: i0, type: NzResizeService, providedIn: 'root' });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "13.3.11", ngImport: i0, type: NzResizeService, decorators: [{
type: Injectable,
args: [{
providedIn: 'root'
}]
}], ctorParameters: function () { return [{ type: i0.NgZone }, { type: i0.RendererFactory2 }]; } });
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