1 files changed, 82 insertions, 0 deletions
diff --git a/tools/Sandcastle/Source/BuildAssembler/BuildAssemblerLibrary/BuildComponent.cs b/tools/Sandcastle/Source/BuildAssembler/BuildAssemblerLibrary/BuildComponent.cs
new file mode 100644
index 0000000..04a68ea
--- /dev/null
+++ b/tools/Sandcastle/Source/BuildAssembler/BuildAssemblerLibrary/BuildComponent.cs
@@ -0,0 +1,82 @@
+// Copyright © Microsoft Corporation.
+// This source file is subject to the Microsoft Permissive License.
+// See http://www.microsoft.com/resources/sharedsource/licensingbasics/sharedsourcelicenses.mspx.
+// All other rights reserved.
+
+using System;
+using System.Collections.Generic;
+using System.Configuration;
+using System.IO;
+using System.Reflection;
+using System.Xml;
+using System.Xml.XPath;
+
+namespace Microsoft.Ddue.Tools {
+
+	public abstract class BuildComponent : IDisposable {
+
+		protected BuildComponent (BuildAssembler assembler, XPathNavigator configuration) {
+            this.assembler = assembler;
+			WriteMessage(MessageLevel.Info, "Instantiating component.");
+		}
+
+		public abstract void Apply (XmlDocument document, string key);
+
+		public virtual void Apply (XmlDocument document) {
+			Apply(document, null);
+		}
+
+        public void Dispose() {
+            Dispose(true);
+            GC.SuppressFinalize(this);
+        }
+
+        protected virtual void Dispose (bool disposing) {
+        }
+
+		// shared data
+
+        private BuildAssembler assembler;
+
+        public BuildAssembler BuildAssembler {
+            get {
+                return(assembler);
+            }
+        }
+
+        //private MessageHandler handler;
+
+		private static Dictionary<string,object> data = new Dictionary<string,object>();
+
+		protected static Dictionary<string,object> Data {
+			get {
+				return(data);
+			}
+		}
+
+        // component messaging facility
+
+        protected void OnComponentEvent (EventArgs e) {
+            assembler.OnComponentEvent(this.GetType(), e);
+        }
+
+		protected void WriteMessage (MessageLevel level, string message) {
+            if (level == MessageLevel.Ignore) return;
+            MessageHandler handler = assembler.MessageHandler;
+			if (handler != null) handler(this.GetType(), level, message);			
+		}
+
+	}
+
+	public enum MessageLevel {
+        Ignore,     // don't show at all
+		Info,		// informational message
+		Warn,		// a minor problem occured
+		Error		// a major problem occured
+	}
+
+
+	public delegate void MessageHandler (Type component, MessageLevel level, string message);
+
+
+}