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Component,
ElementRef,
EventEmitter,
Input,
OnDestroy,
Output,
TemplateRef,
ViewChild,
} from '@angular/core';
import { Subscription } from 'rxjs';
import {
BadgeItem,
Callback,
FocusableElementOwner,
} from '../utils/util.types';
import { BadgeItemTemplateContext } from '../badge-list/badge-list.component';
import {
DYNAMIC_HEADING_START_LEVEL,
DynamicHeadingLevelService,
type DynamicHeadingStartLevel,
} from '../dynamic-heading/dynamic-heading-level.service';
import { InfoboxContainerComponent } from './infobox-container/infobox-container.component';
/**
* Infoboxes allow users to display additional information about an object or functionality.
*/
@Component({
selector: 'gc-infobox',
templateUrl: './infobox.component.html',
styleUrls: ['./infobox.component.css'],
providers: [
{
provide: DynamicHeadingLevelService,
useClass: DynamicHeadingLevelService,
},
{
provide: DYNAMIC_HEADING_START_LEVEL,
useValue: {
kind: 'absolute',
start: 3,
} satisfies DynamicHeadingStartLevel,
},
],
})
export class InfoboxComponent implements OnDestroy, FocusableElementOwner {
/**
* Label of the infobox container.
*/
@Input({ required: true })
public label = '';
/**
* Sublabel at the top of the container.
* @deprecated unused and has no effect
*/
@Input()
public subLabel = '';
/**
* Items that will be rendered as badges in the header of the container.
*/
@Input()
public badges: readonly BadgeItem[] = [];
/**
* A template that will be used to render icons within badges.
*/
@Input()
public badgeIconProvider?: TemplateRef<BadgeItemTemplateContext>;
/**
* Hint message that appears within the header of the container.
*/
@Input()
public hintTitle = '';
/**
* Decides if the infobox is open.
*/
@Input()
public isOpen = false;
/**
* Emits an event about the status of the infobox.
*/
@Output()
public readonly isOpenChange: EventEmitter<boolean> =
new EventEmitter<boolean>();
/** @ignore */
@ViewChild(InfoboxContainerComponent)
private infoboxContainer!: InfoboxContainerComponent;
/** @ignore */
@ViewChild('button')
private button!: ElementRef<HTMLElement>;
/** @ignore */
protected overlayVisible = false;
/** @ignore */
private subscriptions: Subscription[] = [];
/** @ignore */
private clickListenerCallback?: Callback;
/** @ignore */
ngOnDestroy(): void {
this.subscriptions.forEach(s => s.unsubscribe());
if (this.clickListenerCallback) {
this.clickListenerCallback();
}
}
focusChild(): boolean {
if (this.isOpen) {
return this.infoboxContainer.focusChild();
} else {
this.button.nativeElement.focus();
return true;
}
}
/** @ignore */
protected onButtonKeydown(e: KeyboardEvent): void {
if (e.key === ' ' || e.key === 'Enter') {
e.preventDefault();
this.isOpen = true;
this.isOpenChange.emit(true);
}
}
/** @ignore */
protected onButtonClick(): void {
this.isOpen = !this.isOpen;
this.isOpenChange.emit(this.isOpen);
}
/** @ignore */
protected onCloseButtonClick(): void {
this.isOpen = false;
this.isOpenChange.emit(false);
this.button.nativeElement.focus();
this.overlayVisible = false;
}
/** @ignore */
protected handleFocus() {
this.overlayVisible = true;
}
}
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