Imported Upstream version 4.2.0.179

Former-commit-id: 4610231f55806d2a05ed69e5ff3faa7336cc1479

mcs/class/System.Windows.Forms/System.Resources/ResXDataNodeHandler.cs

@@ -0,0 +1,101 @@
+//
+// ResXDataNodeHandler.cs : ResXDataNodeHandler is the base class for the 
+// handler classes which are used to abstract away the different ways in
+// which the ResXDataNode members behave based on the resource type / how
+// it is stored in the resx file / whether it has been stored in a resx 
+// file as determined by tests against the .net framework.
+//
+// The IWritableHandler interface signifies a handler can return a copy
+// of the resource in the string form it appeared in the resx file thus
+// avoiding the need for instantiation.
+// 
+// Author:
+//	Gary Barnett (gary.barnett.mono@gmail.com)
+// 
+// Copyright (C) Gary Barnett (2012)
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+// 
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+using System;
+using System.ComponentModel.Design;
+using System.Reflection;
+
+namespace System.Resources {
+	internal interface IWritableHandler {
+		string DataString { get;}
+	}
+
+	internal abstract class ResXDataNodeHandler {
+		protected ResXDataNodeHandler ()
+		{
+		}
+
+		public abstract object GetValue (ITypeResolutionService typeResolver);
+		
+		public abstract object GetValue (AssemblyName [] assemblyNames);
+
+		public abstract string GetValueTypeName (ITypeResolutionService typeResolver);
+
+		public abstract string GetValueTypeName (AssemblyName [] assemblyNames);
+
+		//override by any inheritor that doesnt want to send the default output of GetValue to be written to ResXFile
+		public virtual object GetValueForResX ()
+		{
+			return GetValue ((AssemblyName []) null);
+		}
+
+		protected Type ResolveType (string typeString) 
+		{
+			// FIXME: check the test that shows you cant load a type with just a fullname from current assembly is valid
+			return Type.GetType (typeString);
+		}
+
+		protected Type ResolveType (string typeString, AssemblyName [] assemblyNames) 
+		{
+			Type result = null;
+
+			if (assemblyNames != null) {
+				foreach (AssemblyName assem in assemblyNames) {
+						Assembly myAssembly = Assembly.Load (assem);
+						result = myAssembly.GetType (typeString, false);
+						if (result != null)
+							return result;
+					}
+			}
+			if (result == null)
+				result = ResolveType (typeString);
+
+			return result;
+		}
+
+		protected Type ResolveType (string typeString, ITypeResolutionService typeResolver) 
+		{
+			Type result = null;
+
+			if (typeResolver != null)
+				result = typeResolver.GetType (typeString);
+
+			if (result == null)
+				result = ResolveType (typeString);
+
+			return result;
+		}
+	}
+}