[Angular] Migrate to signals (filter.component.ts) (#28210)

Author: qmonmert

generators/angular/templates/src/main/webapp/app/shared/filter/filter.component.html.ejs

@@ -1,11 +1,11 @@
-@if (filters.hasAnyFilterSet()) {
+@if (filters().hasAnyFilterSet()) {
   <div class="filter-display">
     <span>__jhiTranslateTag__('entity.filters.set')</span>
     <button class="btn" (click)="clearAllFilters()" (keydown.enter)="clearAllFilters()">
       <fa-icon icon="times" title="__jhiTranslatePipe__('entity.filters.clearAll')"></fa-icon>
     </button>
     <ul>
-      @for (filterOption of filters.filterOptions; track filterOption.name) {
+      @for (filterOption of filters().filterOptions; track filterOption.name) {
         @for (value of filterOption.values; track value) {
           <li>
             <span>{{ filterOption.name }}:</span> {{ value }}

generators/angular/templates/src/main/webapp/app/shared/filter/filter.component.ts.ejs

@@ -1,4 +1,4 @@
-import { Component, Input } from '@angular/core';
+import { Component, input } from '@angular/core';
 import { IFilterOptions } from './filter.model';
 import SharedModule from '../shared.module';
 
@@ -8,13 +8,13 @@ import SharedModule from '../shared.module';
   templateUrl: './filter.component.html',
 })
 export default class FilterComponent {
-  @Input() filters!: IFilterOptions;
+  readonly filters = input.required<IFilterOptions>();
 
   clearAllFilters(): void {
-    this.filters.clear();
+    this.filters().clear();
   }
 
   clearFilter(filterName: string, value: string): void {
-    this.filters.removeFilter(filterName, value);
+    this.filters().removeFilter(filterName, value);
   }
 }