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* Copyright bei
* Entwicklungs- und Pflegeverbund für das gemeinsame Fachverfahren gefa
*
*******************************************************************************/
import {
Component,
ElementRef,
EventEmitter,
Input,
NgZone,
OnInit,
Output,
ViewChild,
} from '@angular/core';
import { FocusableElementOwner } from '../utils/util.types';
/**
* A single radio button element that allows the user to select an option.
*/
@Component({
selector: 'gc-radio-button',
templateUrl: './radio-button.component.html',
styleUrls: ['./radio-button.component.css'],
standalone: false,
})
export class RadioButtonComponent implements FocusableElementOwner, OnInit {
@Input()
public id?: string;
/**
* Hides the label of the radio button. May be used for embedded rendering like in tables.
*/
@Input()
public hideLabel = false;
/**
* Text that will show near the radio button
*/
@Input()
public label = '';
/**
* Decides if the radio button will be rendered in a disabled/enabled state
*/
@Input()
public disabled = false;
/**
* The value represents the selection state: true == checked, false == unchecked
*/
@Input()
public value = false;
/**
* Decides if the radio button will be rendered in a readonly state
* @deprecated
*/
@Input()
public readonly = false;
/**
* Decides if the radio button will be rendered in an error state
*/
@Input()
public error = false;
/**
* Marks the input field as required.
*/
@Input()
public required = false;
/**
* Inform about the change of the selection state
*/
@Output()
public readonly valueChange: EventEmitter<boolean> =
new EventEmitter<boolean>();
/**
* @ignore
*/
@Input()
public radioButtonGroupId?: string;
/**
* Enables setting of the value only when the Promise resolves with value "true".
*/
@Input()
public permitSelection?: () => Promise<boolean> | boolean;
/** @ignore */
@ViewChild('input')
protected inputElement!: ElementRef<HTMLInputElement>;
/** @ignore */
protected _hasFocus = false;
public constructor(private readonly zone: NgZone) {}
public focusChild(): boolean {
if (!this.disabled) {
this.inputElement.nativeElement.focus();
return true;
}
return false;
}
/** @ignore */
public ngOnInit(): void {
// browser may "restore" previous values after navigating (e.g. with browser's "back" button),
// potentially leading to an inconsistent state as no events are fired which could be used to
// detect this (observed on Chromium) -> sync back state to the native element after it's rendered
this.zone.runOutsideAngular(() => {
setTimeout(() => {
setTimeout(() => {
if (this.value !== this.inputElement.nativeElement.checked) {
this.inputElement.nativeElement.checked = this.value;
}
});
});
});
}
/** @ignore */
public _refreshNativeElement(): void {
this.inputElement.nativeElement.checked = this.value;
}
/** @ignore */
protected handleClick(event: MouseEvent) {
event.stopPropagation();
}
/** @ignore */
protected async _onClick(): Promise<void> {
const doChange = () => {
this.inputElement.nativeElement.focus();
this.value = true;
this.valueChange.emit(this.value);
};
if (this.permitSelection) {
const permit = await this.permitSelection();
if (permit) {
doChange();
} else {
this._refreshNativeElement();
}
} else {
doChange();
}
}
/** @ignore */
protected _setFocus(focused: boolean) {
this._hasFocus = focused;
}
}
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