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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 | #region License/* FNA - XNA4 Reimplementation for Desktop Platforms * Copyright 2009-2016 Ethan Lee and the MonoGame Team * * Released under the Microsoft Public License. * See LICENSE for details. */#endregion#region Using Statementsusing System;using System.Collections.ObjectModel;#endregionnamespace Microsoft.Xna.Framework{ public sealed class GameComponentCollection : Collection<IGameComponent> { #region Events /// <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; #endregion #region Protected Methods /// <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 += 1) { 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)); } } 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(); } #endregion #region Private Methods private void OnComponentAdded(GameComponentCollectionEventArgs eventArgs) { if (this.ComponentAdded != null) { this.ComponentAdded(this, eventArgs); } } private void OnComponentRemoved(GameComponentCollectionEventArgs eventArgs) { if (this.ComponentRemoved != null) { this.ComponentRemoved(this, eventArgs); } } #endregion }} |
