feat: implement content projection

Author: korno-no

apps/angular/57-content-projection-default/src/app/app.component.ts

@@ -5,8 +5,14 @@ import { CardComponent } from './card.component';
   imports: [CardComponent],
   selector: 'app-root',
   template: `
-    <app-card title="Titre 1" message="Message1" />
-    <app-card title="Titre 2" />
+    <app-card>
+      <div class="title">Titre 1</div>
+      <div class="message">Message1</div>
+    </app-card>
+    <app-card>
+      <div class="title">Titre 2</div>
+      <div class="message">Aucun message</div>
+    </app-card>
   `,
   host: {
     class: 'p-4 block flex flex-col gap-1',

apps/angular/57-content-projection-default/src/app/card.component.ts

@@ -1,22 +1,17 @@
-import { ChangeDetectionStrategy, Component, input } from '@angular/core';
+import { ChangeDetectionStrategy, Component } from '@angular/core';
 
 @Component({
   selector: 'app-card',
   imports: [],
   template: `
-    <div>{{ title() }}</div>
-    @if (message()) {
-      <div>{{ message() }}</div>
-    } @else {
+    <ng-content select=".title" />
+    <ng-content select=".message">
       <div>Aucun message</div>
-    }
+    </ng-content>
   `,
   changeDetection: ChangeDetectionStrategy.OnPush,
   host: {
     class: 'p-4 border border-grey rounded-sm flex flex-col w-[200px]',
   },
 })
-export class CardComponent {
-  title = input.required<string>();
-  message = input<string | undefined>(undefined);
-}
+export class CardComponent {}