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September 20, 2024 13:00
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| const events = ['mousedown', 'mousemove', 'keypress', 'scroll', 'touchstart']; | |
| // tick timer for schedule jobs | |
| // idle timer autoremove it self after stop | |
| export class IdleTickTimer { | |
| private idleCount: number = 0; | |
| private stopIdleCount: number = 0; | |
| private idleTickCallback: { (tick: number, final: boolean): void }; | |
| private intervalID: number; | |
| private activityCallback: { (): void } | null; | |
| private static instance: IdleTickTimer | null; | |
| private constructor( | |
| interval: number, | |
| stopIdleCount: number, | |
| tickCallback: { (idleCount: number, final: boolean): void }, | |
| ) { | |
| this.idleCount = 0; | |
| this.stopIdleCount = stopIdleCount; | |
| this.idleTickCallback = tickCallback; | |
| this.intervalID = 0; | |
| this.activityCallback = null; | |
| // activity listener | |
| events.forEach((e) => { | |
| window.addEventListener(e, this); | |
| }); | |
| this.intervalID = window.setInterval( | |
| () => this.onTimeout(), | |
| interval * 1000, | |
| ); | |
| } | |
| // reset idle timer on activity | |
| public handleEvent() { | |
| this.idleCount = 0; | |
| if (this.activityCallback) this.activityCallback(); | |
| } | |
| private onTimeout() { | |
| ++this.idleCount; | |
| const final = this.idleCount >= this.stopIdleCount; | |
| if (final) IdleTickTimer.stop(); | |
| this.idleTickCallback(this.idleCount, final); | |
| } | |
| // interval (seconds) | |
| static start( | |
| interval: number, | |
| stopIdleCount: number, | |
| tickCallback: { (idleCount: number, final: boolean): void }, | |
| ): void { | |
| // already started | |
| if (this.instance) return; | |
| this.instance = new IdleTickTimer(interval, stopIdleCount, tickCallback); | |
| } | |
| static stop() { | |
| if (!this.instance) return; | |
| this.instance.instanceStop(); | |
| this.instance = null; | |
| } | |
| // stop timer and clear | |
| private instanceStop() { | |
| events.forEach((e) => { | |
| window.removeEventListener(e, this); | |
| }); | |
| window.clearInterval(this.intervalID); | |
| } | |
| static setActivityCallback(cb: { (): void } | null) { | |
| if (this.instance) this.instance.activityCallback = cb; | |
| } | |
| } |
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