ng-idle / core onIdleEnd和Mat-Dialog出现问题

时间:2018-10-08 20:16:13

标签: angular angular-material2 ng-idle

我发现Ng-Idle(材质6和Angular 6)存在一个问题

"@ng-idle/core": "^6.0.0-beta.3"
"@ng-idle/keepalive": "^6.0.0-beta.3"
"@angular/core": "^6.1.9"
"@angular/cdk": "^6.4.7"
"@angular/material": "^6.4.7"

场景

每当用户闲置时,对话框(弹出窗口)都会显示倒计时,直到用户退出系统为止。如果用户在通过鼠标活动注销之前返回,则倒计时将停止,并且对话框将关闭/消失。

问题

但是,在Angular 5中,该功能在我升级到Angular 6之前一直可以正常工作。只要用户在onTimeout之前返回,它就会触发onIdleEnd,但鼠标活动时对话框不会消失。我创建了一个Angular 6应用来复制该问题。我正在尝试确定这是Ng-Idle还是Angular问题。

Stackblitz with Ng-Idle

Stackblitz showing Mat-Dialog closing after 10 second countdown

Github

有人遇到这个问题吗?

2 个答案:

答案 0 :(得分:2)

我有同样的问题。我通过推动角度变化来解决它。

第一:

{ AppplicationRef } from '@angular/core';

在组件的构造函数中添加ChangeDetectorRef:

constructor(private appRef: ApplicationRef)

然后在onIdleEnd上调用它:

this.idle.onIdleEnd.subscribe(() => {
    this.showModal = false;
    this.appRef.tick();
});

StackBlitz solution

答案 1 :(得分:0)

好的,我无法发表评论,因为我还没有声誉,但是我想分享一下我的工作方式。我所做的是在对话框标题/内容周围创建一个父

元素,该元素在单击时调用closeMe()函数。此closeMe()调用“ this.dialogRef.close()”函数,该函数实际上确实会关闭对话框。

当ng2-idle触发可观察到的onIdleEnd时,我模拟了对该父div的点击。为此,我需要将“空闲”对象“注入”对话框。

我的对话框component.ts文件:

import { Component, OnInit, Inject, ViewChild, ElementRef } from '@angular/core';
import { MatDialogRef, MAT_DIALOG_DATA } from '@angular/material';
import { Idle } from '@ng-idle/core';

@Component({
  selector: 'idle-timeout-warning-modal',
  templateUrl: './idle-timeout-warning.component.html',
  styleUrls: ['./idle-timeout-warning.component.css'],
})
export class IdleIimeoutWarningComponent implements OnInit {
  private idle: Idle;

  public countdown: number;

  //Need this in order to close the dialog box on idle end. This is because, for some reason,
  //I cannot do a this.dialogRef.close() in the onIdleEnd subscription.
  @ViewChild('closeMeDiv') closeMeDiv: ElementRef;

  constructor(
    public dialogRef: MatDialogRef<IdleIimeoutWarningComponent>,
    @Inject(MAT_DIALOG_DATA) public data: any, //Data is: {"idleObj":<idle object>, "timeout":<timeoutPeriodSec (integer)>}
  ) { 
    this.idle = data.idleObj;
    this.countdown = data.timeout;
  }

  ngOnInit() { 
    this.idle.onTimeoutWarning.subscribe((countdown: number) => {
      this.countdown = countdown;
    });
    this.idle.onIdleEnd.subscribe(() => { 
      this.closeMeDiv.nativeElement.click();
    });
  }

  closeMe() {
    this.dialogRef.close();
  }
}

我的对话框html文件:

<div #closeMeDiv (click)="closeMe()">
    <div mat-dialog-title>
        <h3>Please move the mouse or press any key</h3>
        <hr />
    </div>

    <div mat-dialog-content>
        <p>
            You'll be logged out in <span class="idle-label idle-label-warning">{{countdown}}</span>
            second<span *ngIf="countdown != 1">s</span>.
        </p>
    </div>
</div>

然后在空闲设置函数中(在我拥有的另一项服务中,在构造函数参数中注入“ this.idle`”)

let idleStartSec:number = 5;
let timeoutPeriodSec:number = 5;

// sets an idle timeout - will trigger timeout period
this.idle.setIdle(idleStartSec);
// sets a timeout period. after this amount of inactivity, the user will be considered timed out.
this.idle.setTimeout(timeoutPeriodSec);
// sets the default interrupts, in this case, things like clicks, scrolls, touches to the document
this.idle.setInterrupts(DEFAULT_INTERRUPTSOURCES);

this.idle.onIdleStart.subscribe(() => { //Fires when timeout is about to start
  this.dialogRef = this.dialog.open(IdleIimeoutWarningComponent, {
    panelClass: 'modal-lg',
    data: {"idleObj":this.idle, "timeout":timeoutPeriodSec}
  });
});

this.idle.onTimeout.subscribe(() => {
  this.dialogRef.close();
  //Do other stuff here
});

奇怪的是,对this.dialogRef.close();的直接调用在onTimeout中起作用,而在onIdleEnd中不起作用。

无论如何,希望这对您有所帮助,直到问题解决。