Imported Upstream version 4.2.0.179

Former-commit-id: 4610231f55806d2a05ed69e5ff3faa7336cc1479

mcs/class/System.Windows.Forms/System.Windows.Forms.PropertyGridInternal/PropertiesTab.cs

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+// 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) 2005-2008 Novell, Inc.
+//
+// Authors:
+//	Jonathan Chambers	jonathan.chambers@ansys.com
+//	Ivan N. Zlatev		contact@i-nz.net
+//
+
+using System;
+using System.ComponentModel;
+using System.Windows.Forms.Design;
+
+namespace System.Windows.Forms.PropertyGridInternal
+{
+	public class PropertiesTab : PropertyTab
+	{
+		public PropertiesTab () 
+		{
+		}
+
+		public override PropertyDescriptorCollection GetProperties (object component, Attribute[] attributes)
+		{
+			return GetProperties (null, component, attributes);
+		}
+
+		public override PropertyDescriptorCollection GetProperties (ITypeDescriptorContext context, object component, Attribute[] attributes)
+		{
+			if (component == null)
+				return new PropertyDescriptorCollection (null);
+			if (attributes == null)
+				attributes = new Attribute[] { BrowsableAttribute.Yes };
+
+			PropertyDescriptorCollection properties = null;
+			TypeConverter converter = TypeDescriptor.GetConverter (component);
+			if (converter != null && converter.GetPropertiesSupported ())
+				properties = converter.GetProperties (context, component, attributes);
+			if (properties == null)   // try 3: TypeDescriptor
+				properties = TypeDescriptor.GetProperties (component, attributes);
+			return properties;
+		}
+
+		public override PropertyDescriptor GetDefaultProperty (object obj)
+		{
+			if (obj == null)
+				return null;
+
+			return TypeDescriptor.GetDefaultProperty (obj);
+		}
+
+		public override string HelpKeyword {
+			get { return "vs.properties"; }
+		}
+
+		public override string TabName {
+			get { return "Properties"; }
+		}
+	}
+}