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* Copyright (c) Siemens 2016 - 2025
* SPDX-License-Identifier: MIT
*/
import { CdkMonitorFocus, FocusOrigin } from '@angular/cdk/a11y';
import {
ChangeDetectionStrategy,
Component,
computed,
ElementRef,
input,
model,
OnInit,
output,
signal,
viewChild
} from '@angular/core';
import { FormsModule } from '@angular/forms';
import { addIcons, elementCancel, SiIconComponent } from '@siemens/element-ng/icon';
import { SiTypeaheadDirective } from '@siemens/element-ng/typeahead';
import { SiTranslatePipe, TranslatableString } from '@siemens/element-translate-ng/translate';
import { Observable } from 'rxjs';
import { CriterionDefinition, CriterionValue, OptionType } from './si-filtered-search.model';
import { SiFilteredSearchDateValueComponent } from './values/date-value/si-filtered-search-date-value.component';
import { SiFilteredSearchMultiSelectComponent } from './values/multi-select/si-filtered-search-multi-select.component';
import { SiFilteredSearchValueBase } from './values/si-filtered-search-value.base';
import { SiFilteredSearchTypeaheadComponent } from './values/typeahead/si-filtered-search-typeahead.component';
@Component({
selector: 'si-filtered-search-value',
imports: [
CdkMonitorFocus,
SiTypeaheadDirective,
FormsModule,
SiTranslatePipe,
SiFilteredSearchDateValueComponent,
SiFilteredSearchTypeaheadComponent,
SiFilteredSearchMultiSelectComponent,
SiIconComponent
],
templateUrl: './si-filtered-search-value.component.html',
styleUrl: './si-filtered-search-value.component.scss',
changeDetection: ChangeDetectionStrategy.OnPush
})
export class SiFilteredSearchValueComponent implements OnInit {
readonly value = model.required<CriterionValue>();
readonly definition = input.required<CriterionDefinition>();
readonly disabled = input.required<boolean>();
readonly readonly = input.required<boolean>();
readonly onlySelectValue = input.required<boolean>();
readonly maxCriteriaOptions = input.required<number>();
readonly optionsInScrollableView = input.required<number>();
readonly clearButtonLabel = input.required<TranslatableString>();
readonly lazyValueProvider =
input<(criterionName: string, typed: string | string[]) => Observable<OptionType[]>>();
readonly searchDebounceTime = input.required<number>();
readonly itemCountText = input.required<TranslatableString>();
readonly disableSelectionByColonAndSemicolon = input.required<boolean>();
readonly searchLabel = input.required<TranslatableString>();
readonly invalidCriterion = input.required<boolean>();
readonly isStrictOrOnlySelectValue = input.required<boolean>();
readonly editOnCreation = input.required<boolean>();
readonly deleteCriterion = output<{ triggerSearch: boolean } | void>();
readonly submitCriterion = output<{ freeText: string } | void>();
protected readonly active = signal<boolean>(false);
protected readonly icons = addIcons({ elementCancel });
private hasPendingFocus = false;
private readonly operatorInput = viewChild<ElementRef<HTMLInputElement>>('operatorInput');
private readonly valueInput = viewChild(SiFilteredSearchValueBase);
readonly type = computed(() => {
const definition = this.definition();
const validationType = definition.validationType;
if (validationType === 'date' || validationType === 'date-time') {
return 'date';
}
// Handle multi-select vs single-select for other validation types.
return definition.multiSelect ? 'multi-select' : 'typeahead';
});
readonly selectedOperatorIndex = computed(() => {
const operator = this.value().operator;
const operators = this.definition().operators;
if (!operator || !operators) {
return -1;
}
return operators.findIndex(op => op.includes(operator));
});
readonly longestOperatorLength = computed(() => {
const operators = this.definition().operators;
Iif (!operators) {
return 0;
}
return Math.max(...operators.map(a => a.length));
});
ngOnInit(): void {
if (this.editOnCreation()) {
this.edit();
}
}
closeOverlay(): void {
if (this.active()) {
this.active.set(false);
}
}
edit(field?: 'value' | 'operator'): void {
Iif (this.readonly()) {
return;
}
this.active.set(true);
this.hasPendingFocus = true;
setTimeout(() => {
if (field === 'value') {
this.valueInput()?.focus();
} else if (field === 'operator') {
this.operatorInput()?.nativeElement.focus();
} else {
(this.operatorInput()?.nativeElement ?? this.valueInput())?.focus();
}
this.hasPendingFocus = false;
});
}
protected backspaceOverflow(): void {
const operatorInput = this.operatorInput()?.nativeElement;
if (operatorInput) {
operatorInput.focus();
} else {
this.deleteCriterion.emit();
}
}
protected focusChange(focusOrigin: FocusOrigin): void {
if (this.hasPendingFocus) {
return;
}
setTimeout(() => {
// We need to wait for the overlay, that might be shown and now close as well on onside click.
if (this.active() && !focusOrigin && !this.valueInput()?.focusInOverlay()) {
this.active.set(false);
}
});
}
protected operatorUpdate(operator: string): void {
this.value.update(value => ({ ...value, operator }));
}
protected operatorBackspace(): void {
if (!this.operatorInput()?.nativeElement.value) {
this.deleteCriterion.emit();
}
}
protected operatorEnter(): void {
this.valueInput()!.focus();
}
protected operatorBlur(): void {
const operators = this.definition().operators;
Iif (operators && !operators.includes(this.value().operator!)) {
this.operatorUpdate(operators.includes('=') ? '=' : operators[0]);
}
}
protected clear(): void {
if (!this.active() || !this.value().value?.length) {
this.deleteCriterion.emit({ triggerSearch: true });
return;
}
this.value.update(v => ({
...v,
dateValue: undefined,
value: this.definition().multiSelect ? [] : ''
}));
}
}
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