Merge pull request #3018 from ludovic-henry/coop-marshal-attach
[mono.git] / mcs / class / System.Windows.Forms / System.Windows.Forms / CursorConverter.cs
index 409479640148e2b1195b543496d5b088e79cc31d..f4571a056d4ab16c4aa67f9e3c1d8ea96de97e46 100644 (file)
-////\r
-//// System.Windows.Forms.CursorConverter.cs\r
-////\r
-//// Author:\r
-////   stubbed out by Jaak Simm (jaaksimm@firm.ee)\r
-////\r
-//// (C) Ximian, Inc., 2002\r
-////\r
-//\r
-//using System.ComponentModel;\r
-//using System.Globalization;\r
-//\r
-//namespace System.Windows.Forms\r
-//{\r
-//     /// <summary>\r
-//     /// Provides a type converter to convert Cursor objects to and from various other representations.\r
-//     ///\r
-//     /// ToDo note:\r
-//     ///  - nothing is implemented\r
-//     /// </summary>\r
-//\r
-//     [MonoTODO]\r
-//     public class CursorConverter : TypeConverter\r
-//     {\r
-//             \r
-//             #region Constructors\r
-//             [MonoTODO]\r
-//             public CursorConverter() {\r
-//                     throw new NotImplementedException ();\r
-//             }\r
-//             #endregion\r
-//             \r
-//             \r
-//             \r
-//             #region Methods\r
-//             [MonoTODO]\r
-//             public override bool CanConvertFrom(ITypeDescriptorContext context,Type sourceType) {\r
-//                     throw new NotImplementedException ();\r
-//             }\r
-//             \r
-//             [MonoTODO]\r
-//             public override bool CanConvertTo(ITypeDescriptorContext context,Type destinationType) {\r
-//                     throw new NotImplementedException ();\r
-//             }\r
-//             \r
-//             [MonoTODO]\r
-//             public override object ConvertFrom(ITypeDescriptorContext context,CultureInfo culture,object value) {\r
-//                     throw new NotImplementedException ();\r
-//             }\r
-//             \r
-//             [MonoTODO]\r
-//             public override object ConvertTo(ITypeDescriptorContext context,CultureInfo culture,object value,Type destinationType) {\r
-//                     throw new NotImplementedException ();\r
-//             }\r
-//             \r
-//             [MonoTODO]\r
-//             public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) {\r
-//                     throw new NotImplementedException ();\r
-//             }\r
-//             \r
-//             [MonoTODO]\r
-//             public override bool GetStandardValuesSupported(ITypeDescriptorContext context) {\r
-//                     throw new NotImplementedException ();\r
-//             }\r
-//             #endregion\r
-//     }\r
-//}\r
+// 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.
+//
+// Copyright (c) 2005 Novell, Inc.
+//
+// Authors:
+//     Jackson Harper (jackson@ximian.com)
+
+
+using System;
+using System.IO;
+using System.Drawing;
+using System.Drawing.Imaging;
+using System.Collections;
+using System.ComponentModel;
+using System.ComponentModel.Design.Serialization;
+using System.Globalization;
+using System.Reflection;
+using System.Runtime.InteropServices;
+using System.Runtime.Serialization;
+
+namespace System.Windows.Forms
+{
+       public class CursorConverter : TypeConverter
+       {
+               public CursorConverter ()
+               {
+               }
+
+               public override bool CanConvertFrom (ITypeDescriptorContext context, Type sourceType)
+               {
+                       if (sourceType == typeof (byte []))
+                               return true;
+                       return base.CanConvertFrom (context, sourceType);
+               }
+
+               public override bool CanConvertTo (ITypeDescriptorContext context, Type destinationType)
+               {
+                       if (destinationType == typeof (byte []) || destinationType == typeof (InstanceDescriptor))
+                               return true;
+                       return base.CanConvertTo (context, destinationType);
+               }
+
+               public override object ConvertFrom (ITypeDescriptorContext context,
+                               CultureInfo culture, object value)
+               {
+                       byte [] val = value as byte [];
+                       if (val == null)
+                               return base.ConvertFrom (context, culture, value);
+
+                       using (MemoryStream s = new MemoryStream (val)) {
+                               return new Cursor (s);
+                       }
+               }
+
+               public override object ConvertTo (ITypeDescriptorContext context, CultureInfo culture,
+                               object value, Type destinationType)
+               {
+                       if (destinationType == null)
+                               throw new ArgumentNullException ("destinationType");
+
+                       if (value == null && destinationType == typeof (string))
+                               return "(none)";
+
+                       if ( !(value is Cursor))
+                               throw new ArgumentException("object must be of class Cursor", "value");
+
+                       if (destinationType == typeof (byte [])) {
+                               Cursor                  c;
+                               SerializationInfo       si;
+
+                               if (value == null) {
+                                       return new byte [0];
+                               }
+
+                               c = (Cursor)value;
+
+                               si = new SerializationInfo(typeof(Cursor), new FormatterConverter());
+                               ((ISerializable)c).GetObjectData(si, new StreamingContext(StreamingContextStates.Remoting));
+
+                               return (byte[])si.GetValue("CursorData", typeof(byte[]));
+                       } else if (destinationType == typeof (InstanceDescriptor)) {
+                               PropertyInfo[] properties = typeof (Cursors).GetProperties ();
+                               foreach (PropertyInfo propInfo in properties) {
+                                       if (propInfo.GetValue (null, null) == value) {
+                                               return new InstanceDescriptor (propInfo, null);
+                                       }
+                               }
+                       }
+                       return base.ConvertTo (context, culture, value, destinationType);
+               }
+
+               public override StandardValuesCollection GetStandardValues (ITypeDescriptorContext context)
+               {
+                       PropertyInfo[] props = typeof (Cursors).GetProperties();
+                       
+                       ArrayList vals = new ArrayList ();
+
+                       for (int i = 0; i < props.Length; i++) {
+                               vals.Add (props [i].GetValue (null, null));
+                       }
+                       return new StandardValuesCollection (vals);
+               }
+
+               public override bool GetStandardValuesSupported (ITypeDescriptorContext context)
+               {
+                       return true;
+               }
+       }
+}