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* Copyright bei
* Entwicklungs- und Pflegeverbund für das gemeinsame Fachverfahren gefa
*
*******************************************************************************/
import {
AfterViewInit,
Component,
ElementRef,
EventEmitter,
HostBinding,
Input,
NgZone,
OnChanges,
OnDestroy,
Output,
SimpleChanges,
ViewChild,
inject,
} from '@angular/core';
import { ButtonComponent } from '../../button/button.component';
import { ToggleButtonGroupComponent } from '../../toggle-button-group/toggle-button-group.component';
export type CalendarHeaderAction = 'next' | 'previous' | 'today';
export type CalendarView = 'day' | 'week' | 'month';
/**
* Header component for the main Calendar component.
*/
@Component({
selector: 'gc-calendar-header',
templateUrl: './calendar-header.component.html',
styleUrls: ['./calendar-header.component.css'],
})
export class CalendarHeaderComponent
implements OnChanges, AfterViewInit, OnDestroy
{
/**
* Decides which calenar view is currently active.
*/
@Input()
public view: CalendarView = 'day';
/**
* Label that will be shown in the calendar header (date).
* If only a start property is set then the hyphen will not be rendered.
*/
@Input({ required: true })
public label: { start: string; end?: string } = { start: '' };
/**
* Fires upon a calendar-header action press and emits an action.
*/
@Output()
public readonly onAction: EventEmitter<CalendarHeaderAction> =
new EventEmitter<CalendarHeaderAction>();
/**
* Fires upon a calendar-header view change and emits the current view.
*/
@Output()
public readonly viewChange: EventEmitter<CalendarView> =
new EventEmitter<CalendarView>();
/** @ignore */
@ViewChild('container')
private containerEl!: ElementRef<HTMLElement>;
/** @ignore */
@ViewChild('previousButton')
private previousButton!: ButtonComponent;
/** @ignore */
@ViewChild(ToggleButtonGroupComponent, { read: ElementRef<HTMLElement> })
private toggleButtonGroupComponent!: ElementRef<HTMLElement>;
/** @ignore */
@HostBinding('style.height.px')
private height = 0;
/** @ignore */
protected get nextButtonLabel(): string {
const toggleButtonText = this.selectedToggleButton.key;
switch (toggleButtonText) {
case 'day':
return 'Nächster Tag';
case 'week':
return 'Nächste Woche';
case 'month':
return 'Nächster Monat';
default:
toggleButtonText satisfies never;
return '';
}
}
/** @ignore */
protected get previousButtonLabel(): string {
const toggleButtonText = this.selectedToggleButton.key;
switch (toggleButtonText) {
case 'day':
return 'Vorheriger Tag';
case 'week':
return 'Vorherige Woche';
case 'month':
return 'Vorheriger Monat';
default:
toggleButtonText satisfies never;
return '';
}
}
/** @ignore */
protected toggleButtonItems: readonly { key: CalendarView; label: string }[] =
[
{ key: 'day', label: 'Tag' },
{ key: 'week', label: 'Woche' },
{ key: 'month', label: 'Monat' },
];
/**
* @ignore
* the value is overriden in the first ngOnChanges run.
*/
protected selectedToggleButton = this.toggleButtonItems[0];
/** @ignore */
protected condensedToggleButtonGroup = false;
/** @ignore */
private zone: NgZone = inject(NgZone);
/** @ignore */
private tbgHasActiveElement = false;
/** @ignore */
private resizeObserver?: ResizeObserver;
/** @ignore */
ngOnChanges(changes: SimpleChanges): void {
if ('view' in changes) {
const foundButton = this.toggleButtonItems.find(b => b.key === this.view);
if (foundButton) {
this.selectedToggleButton = foundButton;
}
}
}
/** @ignore */
ngAfterViewInit(): void {
this.zone.runOutsideAngular(() => {
this.resizeObserver = new ResizeObserver(this.onResizeHandler.bind(this));
this.resizeObserver.observe(this.containerEl.nativeElement);
});
}
/** @ignore */
ngOnDestroy(): void {
this.resizeObserver?.disconnect();
}
/** @ignore */
protected onResizeHandler() {
NgZone.assertNotInAngularZone();
const containerEl = this.containerEl.nativeElement;
// needs to be set manually due to 'container-type' css property
if (this.height !== containerEl.getBoundingClientRect().height) {
this.zone.run(() => {
this.height = containerEl.getBoundingClientRect().height;
});
}
if (containerEl.clientWidth > 420) {
this.tbgHasActiveElement =
this.toggleButtonGroupComponent.nativeElement.contains(
document.activeElement,
);
}
if (this.condensedToggleButtonGroup !== containerEl.clientWidth < 840) {
this.zone.run(() => {
this.condensedToggleButtonGroup = containerEl.clientWidth < 840;
});
}
if (containerEl.clientWidth < 420) {
if (this.selectedToggleButton !== this.toggleButtonItems[0]) {
this.zone.run(() => {
this.viewChange.emit('day');
this.selectedToggleButton = this.toggleButtonItems[0];
});
}
if (this.tbgHasActiveElement) {
this.previousButton.focusChild();
}
}
}
}
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