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* Copyright bei
* Entwicklungs- und Pflegeverbund für das gemeinsame Fachverfahren gefa
*
*******************************************************************************/
import {
ChangeDetectionStrategy,
Component,
ElementRef,
computed,
effect,
input,
model,
viewChild,
} from '@angular/core';
import { IndexedItem, textToLine } from '../../../utils/internal-utils';
import { Item, Key, WidgetKeySet } from '../../../utils/util.types';
import { createWidgetKeySet, itemTrack } from '../../../utils/utilities';
import {
KeyFocusTarget,
LegacyBasePickerComponent,
} from '../../../picker/legacy-base-picker.component';
import { SelectionEvent } from '../../listbox.directive';
@Component({
selector: 'gc-wizard-stepper-horizontal',
templateUrl: './wizard-stepper-horizontal.component.html',
styleUrls: [
'./../../../utils/styles/reset-button.css',
'./wizard-stepper-horizontal.component.css',
],
changeDetection: ChangeDetectionStrategy.Eager,
standalone: false,
})
export class WizardStepperHorizontalComponent extends LegacyBasePickerComponent<
Item,
Item
> {
public override set items(items: readonly Item[]) {
throw new Error(
'invalid usage of component input, use `items_` input instead',
);
}
/** @ignore */
public get _listboxId(): string {
return this._widgetKeys.baseKey + '-lb';
}
/** @ignore */
public get _ariaControls(): string | undefined {
const idList = [
this._impl_drawerOpen ? this._listboxId : '',
this.controlledId(),
]
.join(' ')
.trim();
return idList ? idList : undefined;
}
// for transition to signals only (legacy base class is not updated and does not use signals, but singal API desired in this component)
// -> temporary alternative input, mapped to super input via effect. internal component, hence possible to easily switch around without external API breakage.
public readonly items_ = input.required<readonly Item[]>();
public readonly controlledId = input('');
public readonly invalidItemKeys = input<ReadonlySet<Key>>(new Set());
/**
* List of item keys that are marked as validated.
*/
public readonly validatedItemKeys = input<ReadonlySet<Key>>(new Set());
public readonly button =
viewChild.required<ElementRef<HTMLButtonElement>>('button');
/**
* The key of the selected value
*/
public readonly selectedItemKey = model.required<Key>();
public readonly _widgetKeys: WidgetKeySet = createWidgetKeySet(
'gc-wizard-stepper-horizontal',
);
public _hasFocus = false;
/** @ignore */
protected readonly ariaMessage = computed<string>(() => {
const itemIndex = this.items_().findIndex(
i => i.key === this.selectedItemKey(),
);
return (
'Arbeitsschritt ' +
(itemIndex !== -1 ? itemIndex + 1 : 1).toString() +
' von ' +
this.items_().length.toString() +
(this.invalidItemKeys().size > 0 ? this.invalidStepIndexes() : '')
);
});
/** @ignore */
private readonly invalidStepIndexes = computed(() => {
let invalidItemsAriaText = ' - Fehlerhafte Eingaben in Schritt ';
const invalidStepIndexes: number[] = [];
this.invalidItemKeys().forEach(value => {
invalidStepIndexes.push(this.items_().findIndex(i => i.key === value));
});
invalidStepIndexes.forEach((stepIndex, idx) => {
const stringifiedIndex = (stepIndex + 1).toString();
if (idx === 0) {
invalidItemsAriaText += stringifiedIndex;
} else {
invalidItemsAriaText +=
idx === invalidStepIndexes.length - 1
? ` und ${stringifiedIndex}`
: `, ${stringifiedIndex}`;
}
});
return invalidItemsAriaText;
});
private readonly containerElement = viewChild.required<
ElementRef<HTMLDivElement>
>('wizardStepperContainer');
public constructor() {
super();
effect(() => {
super.items = this.items_();
});
effect(() => {
this.storage.selected = this.items_().find(
i => this.selectedItemKey() === i.key,
);
});
}
/**
* @ignore
*/
public _processItemText(text: string) {
return textToLine(text, 32, '<br>');
}
public getAnker(): ElementRef<HTMLElement> {
return this.button();
}
public getScrollTarget(): ElementRef<HTMLElement> | undefined {
return this.containerElement();
}
public _isSelected(item: IndexedItem<Item>): boolean {
return item.value.key === this.selectedItemKey();
}
public _onSelect(event: SelectionEvent): void {
const item = this.storage.indexItems.find(i => i.key === event.key);
if (item && !this.disabledItems.has(item.key)) {
this._impl_onSelect(item.key);
}
}
/** @ignore */
public _impl_onSelect(key: Key): void {
if (!this._isDisabled(key)) {
const value = this.storage.getValueByKey(key);
if (value !== undefined) {
this._impl_handleChange(value);
this._impl_close(true);
}
}
}
/** @ignore */
public _impl_handleChange(value: Item): void {
this.selectedItemKey.set(value.key);
}
/** @ignore */
protected override _impl_onOpen(focusItem: KeyFocusTarget): KeyFocusTarget {
// always open selected value if it exists
const key = this.storage.getItemByKey(this.selectedItemKey())?.key;
if (key !== undefined) {
focusItem = key;
}
return focusItem;
}
/** @ignore */
protected _itemTrackBy(item: Item): string {
return itemTrack(item);
}
}
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