ng-zorro-antd
Version:
An enterprise-class UI components based on Ant Design and Angular
100 lines (99 loc) • 9.67 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 { Platform } from '@angular/cdk/platform';
import { ChangeDetectionStrategy, ChangeDetectorRef, Component, EventEmitter, Input, NgZone, Output, ViewEncapsulation } from '@angular/core';
import { interval } from 'rxjs';
import { NzStatisticComponent } from './statistic.component';
const REFRESH_INTERVAL = 1000 / 30;
export class NzCountdownComponent extends NzStatisticComponent {
constructor(cdr, ngZone, platform) {
super();
this.cdr = cdr;
this.ngZone = ngZone;
this.platform = platform;
this.nzFormat = 'HH:mm:ss';
this.nzCountdownFinish = new EventEmitter();
this.target = 0;
}
ngOnChanges(changes) {
if (changes.nzValue) {
this.target = Number(changes.nzValue.currentValue);
if (!changes.nzValue.isFirstChange()) {
this.syncTimer();
}
}
}
ngOnInit() {
this.syncTimer();
}
ngOnDestroy() {
this.stopTimer();
}
syncTimer() {
if (this.target >= Date.now()) {
this.startTimer();
}
else {
this.stopTimer();
}
}
startTimer() {
if (this.platform.isBrowser) {
this.ngZone.runOutsideAngular(() => {
this.stopTimer();
this.updater_ = interval(REFRESH_INTERVAL).subscribe(() => {
this.updateValue();
this.cdr.detectChanges();
});
});
}
}
stopTimer() {
if (this.updater_) {
this.updater_.unsubscribe();
this.updater_ = null;
}
}
/**
* Update time that should be displayed on the screen.
*/
updateValue() {
this.diff = Math.max(this.target - Date.now(), 0);
if (this.diff === 0) {
this.stopTimer();
this.nzCountdownFinish.emit();
}
}
}
NzCountdownComponent.decorators = [
{ type: Component, args: [{
changeDetection: ChangeDetectionStrategy.OnPush,
encapsulation: ViewEncapsulation.None,
selector: 'nz-countdown',
exportAs: 'nzCountdown',
template: `
<nz-statistic
[nzValue]="diff"
[nzValueStyle]="nzValueStyle"
[nzValueTemplate]="nzValueTemplate || countDownTpl"
[nzTitle]="nzTitle"
[nzPrefix]="nzPrefix"
[nzSuffix]="nzSuffix"
>
</nz-statistic>
<ng-template #countDownTpl>{{ diff | nzTimeRange: nzFormat }}</ng-template>
`
},] }
];
NzCountdownComponent.ctorParameters = () => [
{ type: ChangeDetectorRef },
{ type: NgZone },
{ type: Platform }
];
NzCountdownComponent.propDecorators = {
nzFormat: [{ type: Input }],
nzCountdownFinish: [{ type: Output }]
};
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