Initial checkin

Bwg.Logging/MemorySink.cs

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+//
+// BwgBurn - CD-R/CD-RW/DVD-R/DVD-RW burning program for Windows XP
+// 
+// Copyright (C) 2006 by Jack W. Griffin (butchg@comcast.net)
+//
+// This program is free software; you can redistribute it and/or modify 
+// it under the terms of the GNU General Public License as published by 
+// the Free Software Foundation; either version 2 of the License, or 
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but 
+// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
+// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 
+// for more details.
+//
+// You should have received a copy of the GNU General Public License along 
+// with this program; if not, write to the 
+//
+// Free Software Foundation, Inc., 
+// 59 Temple Place, Suite 330, 
+// Boston, MA 02111-1307 USA
+//
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Bwg.Logging
+{
+    /// <summary>
+    /// This class is a message sink that stores all of the messages
+    /// in a list.
+    /// </summary>
+    public class MemorySink : Sink
+    {
+        private Object m_lock;
+        private IList<UserMessage> m_list ;
+
+        /// <summary>
+        /// 
+        /// </summary>
+        public EventHandler<MessageAddedArgs> MessageAdded;
+
+        /// <summary>
+        /// 
+        /// </summary>
+        public MemorySink()
+        {
+            m_lock = new Object();
+            m_list = new List<UserMessage>();
+        }
+
+        /// <summary>
+        /// 
+        /// </summary>
+        /// <returns></returns>
+        public int GetMessageCount()
+        {
+            int cnt;
+
+            lock (m_lock)
+            {
+                cnt = m_list.Count;
+            }
+            return cnt;
+        }
+
+        /// <summary>
+        /// 
+        /// </summary>
+        /// <param name="n"></param>
+        /// <returns></returns>
+        public UserMessage GetMessage(int n)
+        {
+            UserMessage m;
+
+            lock (m_lock)
+            {
+                m = m_list[n];
+            }
+
+            return m;
+        }
+
+        /// <summary>
+        /// 
+        /// </summary>
+        /// <param name="m"></param>
+        public override void LogMessage(UserMessage m)
+        {
+            lock (m_lock)
+            {
+                m_list.Add(m);
+            }
+
+            if (MessageAdded != null)
+            {
+                MessageAddedArgs args = new MessageAddedArgs(m);
+                MessageAdded(this, args);
+            }
+        }
+
+        /// <summary>
+        /// 
+        /// </summary>
+        public void Clear()
+        {
+            lock (m_lock)
+            {
+                m_list.Clear();
+            }
+        }
+    }
+}