2005-10-18 Sebastien Pouliot <[email protected]>

	* UriTypeConverter.cs: New. Implemented (2.0).


svn path=/trunk/mcs/; revision=51869

mcs/class/System/System/ChangeLog

@@ -1,3 +1,7 @@
+2005-10-18  Sebastien Pouliot  <[email protected]>
+
+	* UriTypeConverter.cs: New. Implemented (2.0).
+
 2005-10-17  Sebastien Pouliot  <[email protected]>
 
 	* GenericUriParserOptions.cs: New. 2.0 enum.

mcs/class/System/System/UriTypeConverter.cs

@@ -0,0 +1,125 @@
+//
+// System.UriTypeConverter class
+//
+// Author:
+//	Sebastien Pouliot  <[email protected]>
+//
+// Copyright (C) 2005 Novell, Inc (http://www.novell.com)
+//
+// 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.
+//
+
+#if NET_2_0
+
+using System.ComponentModel;
+using System.ComponentModel.Design.Serialization;
+using System.Globalization;
+using System.Reflection;
+
+namespace System {
+
+	public class UriTypeConverter : TypeConverter {
+
+		public UriTypeConverter ()
+		{
+		}
+
+
+		private bool CanConvert (Type type)
+		{
+			if (type == typeof (string))
+				return true;
+			if (type == typeof (Uri))
+				return true;
+			return (type == typeof (InstanceDescriptor));
+		}
+
+		public override bool CanConvertFrom (ITypeDescriptorContext context, Type sourceType)
+		{
+			if (sourceType == null)
+				throw new ArgumentNullException ("sourceType");
+
+			return CanConvert (sourceType);
+		}
+
+		public override bool CanConvertTo (ITypeDescriptorContext context, Type destinationType)
+		{
+			if (destinationType == null)
+				return false;
+
+			return CanConvert (destinationType);
+		}
+
+		public override object ConvertFrom (ITypeDescriptorContext context, CultureInfo culture, object value)
+		{
+			if (value == null)
+				throw new ArgumentNullException ("value");
+
+			if (!CanConvertTo (context, value.GetType ()))
+				throw new NotSupportedException (Locale.GetText ("Cannot convert from value."));
+
+			if (value is Uri)
+				return value;
+
+			string s = (value as string);
+			if (s != null)
+				return new Uri (s);
+
+			InstanceDescriptor id = (value as InstanceDescriptor);
+			if (id != null) {
+				return id.Invoke ();
+			}
+
+			return base.ConvertFrom (context, culture, value);
+		}
+
+		public override object ConvertTo (ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
+		{
+			if (!CanConvertTo (context, destinationType))
+				throw new NotSupportedException (Locale.GetText ("Cannot convert to destination type."));
+
+			Uri uri = (value as Uri);
+			if (uri != null) {
+				if (destinationType == typeof (string))
+					return uri.AbsoluteUri;
+				if (destinationType == typeof (Uri))
+					return uri;
+				if (destinationType == typeof (InstanceDescriptor)) {
+					ConstructorInfo ci = typeof (Uri).GetConstructor (new Type [1] { typeof (string) });
+					return new InstanceDescriptor (ci , new object [] { uri.AbsoluteUri });
+				}
+			}
+
+			return base.ConvertTo (context, culture, value, destinationType);
+		}
+
+		public override bool IsValid (ITypeDescriptorContext context, object value)
+		{
+			if (value == null)
+				return false;
+
+			// LAMESPEC: docs says that a string is valid only if we can create an URI
+			// from it. However all strings seems to be accepted (see unit tests)
+			return ((value is string) || (value is Uri));
+		}
+	}
+}
+
+#endif