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* Copyright bei
* Entwicklungs- und Pflegeverbund für das gemeinsame Fachverfahren gefa
*
*******************************************************************************/
import {
AfterViewInit,
Component,
ElementRef,
EventEmitter,
Input,
OnChanges,
Output,
QueryList,
SimpleChanges,
ViewChild,
ViewChildren,
} from '@angular/core';
import {
computeErrorTextPrefix,
playSoundIfLengthExceeded,
} from '../utils/internal-utils';
import { isGecko } from '../utils/user-agent';
import {
FocusableElementOwner,
FormControlStatus,
InvalidControlValue,
WidgetKeySet,
} from '../utils/util.types';
import {
SoundType,
createWidgetKeySet,
isInvalidControlValue,
playSound,
} from '../utils/utilities';
import { FocusScopeDirective } from '../internal/focus-scope.directive';
import {
AutoIdDirective,
LabelContainerComponent,
} from '../internal/label-container/label-container.component';
import { OverlayContainerComponent } from '../internal/overlay-container/overlay-container.component';
import { AutoCompleteDirective } from './auto-complete/auto-complete.directive';
import {
TextInputFormatter,
isParseError,
} from './text-input-field.formatters';
/**
* A Text Input element that allows users to enter a text value.
*/
@Component({
selector: 'gc-text-input-field',
templateUrl: './text-input-field.component.html',
styleUrls: [
'../base-range-input-field/base-slot-mode.css',
'./text-input-field.component.css',
'./auto-complete/auto-complete.style.css',
],
})
export class TextInputComponent
extends AutoCompleteDirective
implements FocusableElementOwner, AfterViewInit, OnChanges
{
/**
* Custom ID to use
*/
@Input()
public id?: string;
/**
* The label that shows on the input.
*/
@Input()
public label = '';
/**
* Decides if the control will be rendered in a readonly state.
*/
@Input()
public readonly = false;
/**
* Overrides the default text which is shown when the control is readonly and empty.
*/
@Input()
public readonlyEmptyValue = '';
/**
* If set to true the state of the input is set to disabled which means that it is no longer possible to type text inside the input.
*/
@Input()
public disabled = false;
/**
* Marks the input field as required.
*/
@Input()
public required = false;
/**
* Hint message that appears below the text input field.
*/
@Input()
public hint = '';
/**
* Max number of chars allowed inside that text field
*/
@Input()
public maxLength?: number;
/**
* Formatter to display the value in a custom format and convert user input to the internal representation
*/
@Input()
public formatter?: TextInputFormatter;
/**
* The value of the text input.
*/
@Input()
public value: string | InvalidControlValue = '';
/**
* If true, the component will be rendered in a slot-element mode.
* This enables the component to be used in internal label containers (e.g. `gc-two-slot-label-container`).
* @ignore
*/
@Input()
public _slotElementMode?:
| 'two-slot-label-container'
| 'ext-search-single-field'
| 'ext-search-range-field';
/**
* Error message id used when `_slotElementMode` is enabled.
* @ignore
*/
@Input()
public _errorMessageId?: string;
/**
* Info (hint) message id used when `_slotElementMode` is enabled.
* @ignore
*/
@Input()
public _infoMessageId?: string;
/**
* Informs about a change of the value. Does not fire when updating the value programmatically, only on user inputs.
*
* Note that `InvalidControlValue` is only expected when working with a `formatter` in practice, as in regular
* text input fields raw input is always forwarded without further checks and thus is valid.
*/
@Output()
public readonly valueChange: EventEmitter<string | InvalidControlValue> =
new EventEmitter<string | InvalidControlValue>();
/**
* Event fired when the control looses focus
*/
@Output()
public readonly onFocusLeft: EventEmitter<void> = new EventEmitter<void>();
/**
* Event fired when the control gains focus
*/
@Output()
public readonly onFocusEntered: EventEmitter<void> = new EventEmitter<void>();
/**
* Signals changes of the current (combined) status of the component, e.g. also reports errors triggered by internal
* validation or input handling.
*/
@Output()
public readonly onStatusChange: EventEmitter<FormControlStatus> =
new EventEmitter<FormControlStatus>(true);
/**
* Signals that the text value has changed. In contrast to "valueChange" this event is emitted immediately
* and provides the current (unprocessed) text visible in the control
*/
@Output()
public readonly onInputChange: EventEmitter<string> =
new EventEmitter<string>(true);
/** @ignore */
@ViewChild(FocusScopeDirective)
protected focusScope?: FocusScopeDirective;
/** @ignore */
@ViewChild(AutoIdDirective)
protected autoId!: AutoIdDirective;
/** @ignore */
@ViewChild('popup')
protected popup?: OverlayContainerComponent;
/** @ignore */
@ViewChildren('autocompleteItem')
protected autocompleteItems?: QueryList<ElementRef<HTMLElement>>;
/** @ignore */
@ViewChild('textInput')
private textInputEl?: ElementRef<HTMLInputElement>;
/** @ignore */
@ViewChild(LabelContainerComponent)
private labelContainer?: LabelContainerComponent;
public get _combinedErrorMessage(): string {
return this.internalErrorMessage || this.errorMessage;
}
/**
* Error message that appears below the input field.
*/
@Input()
public set errorMessage(message: string) {
if (this._errorMessage !== message) {
this._errorMessage = message;
this.emitStatusChange();
}
}
public get errorMessage(): string {
return this._errorMessage;
}
/** @ignore */
protected override get popupAnker(): undefined | ElementRef<HTMLElement> {
return this.labelContainer?.drawerSlot;
}
/** @ignore */
protected override get popupScrollTarget():
| undefined
| ElementRef<HTMLElement> {
return this.labelContainer?.boxEl;
}
private set internalErrorMessage(message: string) {
if (message !== this._internalErrorMessage) {
this._internalErrorMessage = message;
this.emitStatusChange();
}
}
private get internalErrorMessage(): string {
return this._internalErrorMessage;
}
/**
* @ignore
*/
public _text = '';
/**
* @ignore
*/
public _maxLengthAriaText?: string;
/** @ignore */
protected readonly _widgetKeys: WidgetKeySet =
createWidgetKeySet('gc-text-input');
/**
* displayed on readonly when readonlyEmptyValue is empty
* @ignore
*/
protected readonly READONLY_DEFAULT_EMPTY_VALUE = '\u2013';
private _errorMessage = '';
private _internalErrorMessage = '';
focusChild(): boolean {
if (!this.disabled) {
this.textInputEl?.nativeElement.focus();
return true;
}
return false;
}
/** @ignore */
public ngOnChanges(changes: SimpleChanges): void {
if ('value' in changes || 'formatter' in changes) {
if (isInvalidControlValue(this.value)) {
this.updateTextValue(this.value.rawValue);
const parseResult = this.formatter?.parse(this.value.rawValue);
if (parseResult && isParseError(parseResult)) {
this.internalErrorMessage = this.generateErrorMsg(
parseResult.message,
);
} else {
this.internalErrorMessage = '';
}
} else {
const newValue = this.formatter
? this.formatter.format(this.value)
: this.value;
this.updateTextValue(newValue);
this.internalErrorMessage = '';
}
}
}
/**
* @ignore
*/
public length(): number {
if (this._text) {
return this._text.length;
} else {
return 0;
}
}
/**
* @ignore
*/
public maxLengthAriaText(): string | null {
if (this.maxLength !== undefined && this.maxLength !== 0) {
return 'maximal ' + this.maxLength.toString() + ' Zeichen';
}
return null;
}
/** @ignore */
protected override focusInputField(): void {
this.focusChild();
}
/** @ignore */
protected override _handleChange(): void {
const currentText = this._text || '';
const parseResult = this.formatter
? this.formatter.parse(currentText)
: currentText;
if (!isParseError(parseResult)) {
this.value = parseResult;
// formatter may create situation where the formatted value is unchanged (different inputs
// may create the same formatted value, e.g. leading zeroes on a number formatter),
// the input's value is now desynchronized from the re-formatted value
if (this.formatter) {
this.updateTextValue(this.formatter.format(parseResult));
}
this.internalErrorMessage = '';
} else {
this.value = {
kind: 'InvalidControlInput',
rawValue: currentText,
errorMessage: this.generateErrorMsg(parseResult.message),
};
this.internalErrorMessage = this.generateErrorMsg(parseResult.message);
}
this.valueChange.emit(this.value);
}
/** @ignore */
protected override _handleAutoCompleteSelection(text: string) {
this.updateTextValue(text);
}
/**
* @ignore
*/
protected async _handleInputChange(evt: Event): Promise<void> {
const currentText = (evt.target as HTMLInputElement).value;
this.updateTextValue(currentText);
await this._autoCompleteOnInput(currentText);
}
/** @ignore */
protected _handleInputKeyDown(evt: KeyboardEvent): void {
if (this._impl_drawerOpen) {
if (evt.key == 'ArrowDown') {
this._popup_focusNext();
evt.preventDefault();
}
if (evt.key == 'ArrowUp') {
this._popup_focusPrev();
evt.preventDefault();
}
if (evt.key == 'Enter') {
this._popup_applyFocused();
evt.preventDefault();
}
if (evt.key === 'Escape') {
this._hideCompletions();
evt.preventDefault();
}
if (evt.key === 'Home') {
this._popup_focusFirst();
evt.preventDefault();
}
if (evt.key === 'End') {
this._popup_focusLast();
evt.preventDefault();
}
}
}
/**
* @ignore
*/
protected _handleFocusLeave(): void {
/**
* Firefox doesn't automatically scroll to the very left, after blur on input element
* https://bugzilla.mozilla.org/show_bug.cgi?id=860329
*/
if (this.textInputEl && isGecko()) {
this.textInputEl.nativeElement.scrollLeft = 0;
}
this.onFocusLeft.next();
if (this._impl_drawerOpen) {
this._hideCompletions();
}
// We need to wait a tick so that the control is back
// in a sync state
setTimeout(() => {
if (
this._combinedErrorMessage.length > 0 ||
this._errorMessageId !== undefined
) {
void playSound(SoundType.ERROR);
}
});
}
/**
* @ignore
*/
protected _handleFocusEntered(): void {
this.onFocusEntered.next();
}
/**
* @ignore
*/
protected _handleBeforeInput(evt: InputEvent): void {
if (this.textInputEl) {
playSoundIfLengthExceeded(
this.textInputEl.nativeElement,
this._text,
this.maxLength,
evt,
);
}
}
/** @ignore */
protected updateTextValue(text: string) {
if (this._text !== text) {
this._text = text;
this.onInputChange.emit(text);
}
}
/** @ignore */
protected getLabelId(): string {
return this._widgetKeys.labelKey;
}
/** @ignore */
protected getInputId(): string {
return this._widgetKeys.widgetKey;
}
/** @ignore */
protected computeAriaDescribedBy(): string | null {
return this._infoMessageId ?? null;
}
/** @ignore */
protected sizeHelperText(): string {
if (this.readonly && this._text.length === 0) {
if (this.readonlyEmptyValue === '') {
return this.READONLY_DEFAULT_EMPTY_VALUE;
} else {
return this.readonlyEmptyValue;
}
} else {
return this._text;
}
}
/** @ignore */
private emitStatusChange() {
const status: FormControlStatus = {};
if (this.internalErrorMessage || this.errorMessage) {
status.error = [];
if (this.internalErrorMessage) {
status.error.push(this.internalErrorMessage);
}
if (this.errorMessage) {
status.error.push(this.errorMessage);
}
}
this.onStatusChange.emit(status);
}
/** @ignore */
private generateErrorMsg(errorMessage: string): string {
const errorPrefix = computeErrorTextPrefix(
this.label,
this._slotElementMode,
'Wert',
);
return errorPrefix + errorMessage;
}
}
|