1 files changed, 87 insertions, 0 deletions
diff --git a/mcs/class/System.Windows.Forms/System.Windows.Forms.X11Internal/X11RootHwnd.cs b/mcs/class/System.Windows.Forms/System.Windows.Forms.X11Internal/X11RootHwnd.cs
new file mode 100644
index 00000000000..3b92f83f17a
--- /dev/null
+++ b/mcs/class/System.Windows.Forms/System.Windows.Forms.X11Internal/X11RootHwnd.cs
@@ -0,0 +1,87 @@
+// 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) 2006 Novell, Inc. (http://www.novell.com)
+//
+//
+
+using System;
+using System.Runtime.InteropServices;
+using System.Windows.Forms;
+
+namespace System.Windows.Forms.X11Internal {
+
+	internal class X11RootHwnd : X11Hwnd
+	{
+		public X11RootHwnd (X11Display display, IntPtr window_handle) : base (display)
+		{
+			WholeWindow = ClientWindow = window_handle;
+
+			Xlib.XSelectInput(display.Handle, WholeWindow, new IntPtr ((int)EventMask.PropertyChangeMask));
+		}
+
+		public override void CreateWindow (CreateParams cp)
+		{
+			// we don't do anything here
+		}
+
+		public override void PropertyChanged (XEvent xevent)
+		{
+			if (xevent.PropertyEvent.atom == Display.Atoms._NET_ACTIVE_WINDOW) {
+				IntPtr actual_atom;
+				int actual_format;
+				IntPtr nitems;
+				IntPtr bytes_after;
+				IntPtr prop = IntPtr.Zero;
+
+				Xlib.XGetWindowProperty (Display.Handle, WholeWindow,
+							 Display.Atoms._NET_ACTIVE_WINDOW, IntPtr.Zero, new IntPtr (1), false,
+							 Display.Atoms.XA_WINDOW, out actual_atom, out actual_format, out nitems, out bytes_after, ref prop);
+
+				if (((long)nitems > 0) && (prop != IntPtr.Zero)) {
+					// FIXME - is this 64 bit clean?
+					Display.SetActiveWindow ((X11Hwnd)Hwnd.ObjectFromHandle((IntPtr)Marshal.ReadInt32(prop)));
+					Xlib.XFree(prop);
+				}
+			}
+			else if (xevent.PropertyEvent.atom == Display.Atoms._NET_SUPPORTED) {
+				// we'll need to refetch the supported protocols list
+				refetch_net_supported = true;
+				_net_supported = null;
+			}
+			else
+				base.PropertyChanged (xevent);
+		}
+
+		bool refetch_net_supported = true;
+		IntPtr[] _net_supported;
+		public IntPtr[] _NET_SUPPORTED {
+			get {
+				if (refetch_net_supported) {
+					_net_supported = GetAtomListProperty (Display.Atoms._NET_SUPPORTED);
+					refetch_net_supported = false;
+				}
+
+				return _net_supported;
+			}
+		}
+	}
+
+}
+