Refactor AbpVisibleDirective to use signal inputs

Replaces @Input with Angular's new signal-based input and effect for reactive updates. Simplifies lifecycle management by removing OnInit and handling input changes via effect, improving code clarity and reactivity.

npm/ng-packs/packages/theme-shared/src/lib/directives/visible.directive.ts

@@ -1,37 +1,41 @@
-import { OnInit, Directive, OnDestroy, Input, ViewContainerRef, TemplateRef, inject } from '@angular/core';
+import { Directive, OnDestroy, ViewContainerRef, TemplateRef, inject, input, effect } from '@angular/core';
 import { EMPTY, from, Observable, of, Subscription } from 'rxjs';
 
+type VisibleInput = boolean | Promise<boolean> | Observable<boolean> | undefined | null;
+
 @Directive({
   selector: '[abpVisible]',
 })
-export class AbpVisibleDirective implements OnDestroy, OnInit {
+export class AbpVisibleDirective implements OnDestroy {
   private viewContainerRef = inject(ViewContainerRef);
   private templateRef = inject<TemplateRef<unknown>>(TemplateRef);
 
-  conditionSubscription: Subscription | undefined;
-  isVisible: boolean | undefined;
+  private conditionSubscription: Subscription | undefined;
+  private isVisible: boolean | undefined;
+  private condition$: Observable<boolean> = of(false);
 
-  @Input() set abpVisible(
-    value: boolean | Promise<boolean> | Observable<boolean> | undefined | null,
-  ) {
-    this.condition$ = checkType(value);
-    this.subscribeToCondition();
-  }
+  readonly abpVisible = input<VisibleInput>();
 
-  private condition$: Observable<boolean> = of(false);
-  ngOnInit(): void {
-    this.updateVisibility();
+  constructor() {
+    effect(() => {
+      const value = this.abpVisible();
+      this.condition$ = checkType(value);
+      this.subscribeToCondition();
+    });
   }
+
   ngOnDestroy(): void {
     this.conditionSubscription?.unsubscribe();
   }
 
   private subscribeToCondition() {
+    this.conditionSubscription?.unsubscribe();
     this.conditionSubscription = this.condition$.subscribe(value => {
       this.isVisible = value;
       this.updateVisibility();
     });
   }
+
   private updateVisibility() {
     this.viewContainerRef.clear();
     // it should be false not falsy
@@ -42,7 +46,7 @@ export class AbpVisibleDirective implements OnDestroy, OnInit {
   }
 }
 
-function checkType(value: boolean | Promise<boolean> | Observable<boolean> | undefined | null) {
+function checkType(value: VisibleInput) {
   if (value instanceof Promise) {
     return from(value);
   } else if (value instanceof Observable) {