new mouse key hook

Common/MouseKeyHook/HotKeys/HotKeySetCollection.cs

@@ -0,0 +1,48 @@
+// This code is distributed under MIT license. 
+// Copyright (c) 2015 George Mamaladze
+// See license.txt or https://mit-license.org/
+
+using System.Collections.Generic;
+
+namespace Gma.System.MouseKeyHook.HotKeys
+{
+    /// <summary>
+    ///     A collection of HotKeySets
+    /// </summary>
+    public sealed class HotKeySetCollection : List<HotKeySet>
+    {
+        private KeyChainHandler m_keyChain;
+
+        /// <summary>
+        ///     Adds a HotKeySet to the collection.
+        /// </summary>
+        /// <param name="hks"></param>
+        public new void Add(HotKeySet hks)
+        {
+            m_keyChain += hks.OnKey;
+            base.Add(hks);
+        }
+
+        /// <summary>
+        ///     Removes the HotKeySet from the collection.
+        /// </summary>
+        /// <param name="hks"></param>
+        public new void Remove(HotKeySet hks)
+        {
+            m_keyChain -= hks.OnKey;
+            base.Remove(hks);
+        }
+
+        /// <summary>
+        ///     Uses a multi-case delegate to invoke individual HotKeySets if the Key is in use by any HotKeySets.
+        /// </summary>
+        /// <param name="e"></param>
+        internal void OnKey(KeyEventArgsExt e)
+        {
+            if (m_keyChain != null)
+                m_keyChain(e);
+        }
+
+        private delegate void KeyChainHandler(KeyEventArgsExt kex);
+    }
+}