I've been playing around with angular in combination with ng-bootstrap and I am stumped about the following:
I have this NgbAccordion on my page:
<ngb-accordion #acc="ngbAccordion">
<ngb-panel *ngFor="let container of answer.resultObj.containers.containers" title="{{container.metadata.title}}">
<ng-template ngbPanelContent>
<app-containers [container]="container"></app-containers>
</ng-template>
</ngb-panel>
</ngb-accordion>
this results in a lit of ngb-panels all collapsed. This is precisely what I want and I can toggle the expansion of the app-container objects by clicking on them.
I also want a button to expand all the ngb-panels. I can't seem to get it to work. I found a nice example based on Angularjs (<2) but that does not work and the [isOpen] option that seemed to have been there at one time does not exist anymore?!
My angular component:
import {Component, Input} from '@angular/core';
import {Answer} from '../model/answer';
@Component({
selector: 'app-answer',
templateUrl: './answer.component.html',
styleUrls: ['./answer.component.css'],
providers: []
})
export class AnswerComponent {
@Input() answer: Answer;
constructor() {
}
}
Any help would be appreciated...
You can use the activeIds
input on the accordion
https://ng-bootstrap.github.io/#/components/accordion/api
Basically, assign a unique id to each of your panels
<ngb-panel *ngFor="let container ...; let i= index" title="Panel{{i}}" id="panel-{{i}}"
and declare in your component a list of the active ids (= ids of the panels that must be open)
activeIds: string[] = [];
Then modify that list when you want to open/close the panels
this.activeIds = [];//All panels closed
this.activeIds = ['panel-1', 'panel-2']; //panels 1 and 2 are open
And bind this variable to the activeIds
input of the accordion
<ngb-accordion #acc="ngbAccordion" [activeIds]="activeIds"
Finally, add the buttons
<button (click)="activeIds=[]" >close all</button>
<button (click)="openAll()" >open all</button>
openAll()
{
this.activeIds = [/* add all panel ids here */];
}
I created a stackblitz to illustrate this
https://stackblitz.com/edit/angular-nzzwnc?file=app%2Fapp.component.ts
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