SharpDevelop/src/AddIns/DisplayBindings/WpfDesign/WpfDesign.AddIn/Src/WpfAndWinFormsTopLevelWindowService.cs

// <file>
//     <copyright see="prj:///doc/copyright.txt"/>
//     <license see="prj:///doc/license.txt"/>
//     <owner name="Daniel Grunwald" email="daniel@danielgrunwald.de"/>
//     <version>$Revision: 2667$</version>
// </file>

using System;
using System.Windows;
using System.Windows.Forms;
using System.Windows.Interop;
using System.Windows.Media;

namespace ICSharpCode.WpfDesign.AddIn
{
	sealed class WpfAndWinFormsTopLevelWindowService : ITopLevelWindowService
	{
		public ITopLevelWindow GetTopLevelWindow(UIElement element)
		{
			Window window = Window.GetWindow(element);
			if (window != null) {
				return new WpfTopLevelWindow(window);
			}
			HwndSource hwndSource = PresentationSource.FromVisual(element) as HwndSource;
			if (hwndSource != null) {
				Control ctl = Control.FromChildHandle(hwndSource.Handle);
				if (ctl != null) {
					Form form = ctl.FindForm();
					if (form != null) {
						return new WindowsFormsTopLevelWindow(form);
					}
				}
			}
			return null;
		}
		
		sealed class WpfTopLevelWindow : ITopLevelWindow
		{
			Window window;
			
			public WpfTopLevelWindow(Window window)
			{
				this.window = window;
			}
			
			public void SetOwner(Window child)
			{
				child.Owner = window;
			}
			
			public bool Activate()
			{
				return window.Activate();
			}
		}
		
		sealed class WindowsFormsTopLevelWindow : ITopLevelWindow
		{
			Form form;
			
			public WindowsFormsTopLevelWindow(Form form)
			{
				this.form = form;
			}
			
			public void SetOwner(Window child)
			{
				(new WindowInteropHelper(child)).Owner = form.Handle;
			}
			
			public bool Activate()
			{
				return form.Focus();
			}
		}
	}
}