(ded4a3e0a) v0.9.0.7

Libraries/MonoGame.Framework/Src/MonoGame.Framework/GameComponentCollection.cs

@@ -0,0 +1,76 @@
+// MonoGame - Copyright (C) The MonoGame Team
+// This file is subject to the terms and conditions defined in
+// file 'LICENSE.txt', which is part of this source code package.
+
+using System;
+using System.Collections.ObjectModel;
+
+namespace Microsoft.Xna.Framework
+{
+    public sealed class GameComponentCollection : Collection<IGameComponent>
+    {
+        /// <summary>
+        /// Event that is triggered when a <see cref="GameComponent"/> is added
+        /// to this <see cref="GameComponentCollection"/>.
+        /// </summary>
+        public event EventHandler<GameComponentCollectionEventArgs> ComponentAdded;
+
+        /// <summary>
+        /// Event that is triggered when a <see cref="GameComponent"/> is removed
+        /// from this <see cref="GameComponentCollection"/>.
+        /// </summary>
+        public event EventHandler<GameComponentCollectionEventArgs> ComponentRemoved;
+
+        /// <summary>
+        /// Removes every <see cref="GameComponent"/> from this <see cref="GameComponentCollection"/>.
+        /// Triggers <see cref="OnComponentRemoved"/> once for each <see cref="GameComponent"/> removed.
+        /// </summary>
+        protected override void ClearItems()
+        {
+            for (int i = 0; i < base.Count; i++)
+            {
+                this.OnComponentRemoved(new GameComponentCollectionEventArgs(base[i]));
+            }
+            base.ClearItems();
+        }
+
+        protected override void InsertItem(int index, IGameComponent item)
+        {
+            if (base.IndexOf(item) != -1)
+            {
+                throw new ArgumentException("Cannot Add Same Component Multiple Times");
+            }
+            base.InsertItem(index, item);
+            if (item != null)
+            {
+                this.OnComponentAdded(new GameComponentCollectionEventArgs(item));
+            }
+        }
+
+        private void OnComponentAdded(GameComponentCollectionEventArgs eventArgs)
+        {
+            EventHelpers.Raise(this, ComponentAdded, eventArgs);
+        }
+
+        private void OnComponentRemoved(GameComponentCollectionEventArgs eventArgs)
+        {
+            EventHelpers.Raise(this, ComponentRemoved, eventArgs);
+        }
+
+        protected override void RemoveItem(int index)
+        {
+            IGameComponent gameComponent = base[index];
+            base.RemoveItem(index);
+            if (gameComponent != null)
+            {
+                this.OnComponentRemoved(new GameComponentCollectionEventArgs(gameComponent));
+            }
+        }
+
+        protected override void SetItem(int index, IGameComponent item)
+        {
+            throw new NotSupportedException();
+        }
+    }
+}
+