import { Injectable } from '@angular/core'; import { OpenSlidesComponent } from '../../openslides.component'; import { MatDialog } from '@angular/material'; import { ChoiceDialogComponent, ChoiceDialogOptions, ChoiceAnswer } from '../../shared/components/choice-dialog/choice-dialog.component'; /** * A service for prompting the user to select a choice. */ @Injectable({ providedIn: 'root' }) export class ChoiceService extends OpenSlidesComponent { /** * Ctor. * * @param dialog For opening the ChoiceDialog */ public constructor(private dialog: MatDialog) { super(); } /** * Opens the dialog. Returns the chosen value after the user accepts. * @param title The title to display in the dialog * @param choices The available choices * @returns an answer {@link ChoiceAnswer} */ public async open(title: string, choices: ChoiceDialogOptions, multiSelect: boolean = false): Promise { const dialogRef = this.dialog.open(ChoiceDialogComponent, { minWidth: '250px', data: { title: title, choices: choices, multiSelect: multiSelect } }); return dialogRef.afterClosed().toPromise(); } }