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• page.ts

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src.app.core.guards.page.ts Maven / Gradle / Ivy

import { HostListener } from '@angular/core';

export abstract class CanDeactivatePage {
  abstract canDeactivatePage(): boolean;

  @HostListener('window:beforeunload', ['$event'])
  unloadNotification($event: any) {
    if (!this.canDeactivatePage()) {
      $event.returnValue = true;
    }
  }
}