extendedwebbrowser.cs

SharpDevelop2.0.0 c#开发免费工具

// <file>
//     <copyright see="prj:///doc/copyright.txt"/>
//     <license see="prj:///doc/license.txt"/>
//     <owner name="Daniel Grunwald" email="[e-mail]"/>
//     <version>$Revision: 915 $</version>
// </file>

using System;
using System.Collections.Generic;
using System.Text;
using System.ComponentModel;
using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace ICSharpCode.SharpDevelop.BrowserDisplayBinding
{
	public delegate void NewWindowExtendedEventHandler(object sender, NewWindowExtendedEventArgs e);
	
	public class NewWindowExtendedEventArgs : CancelEventArgs
	{
		Uri url;
		
		public Uri Url {
			get {
				return url;
			}
		}
		
		public NewWindowExtendedEventArgs(Uri url)
		{
			this.url = url;
		}
	}
	
	/// <summary>
	/// Microsoft didn't include the URL being surfed to in the NewWindow event args,
	/// but here is the workaround:
	/// </summary>
	public class ExtendedWebBrowser : WebBrowser
	{
		class WebBrowserExtendedEvents : System.Runtime.InteropServices.StandardOleMarshalObject, DWebBrowserEvents2
		{
			private ExtendedWebBrowser browser;
			
			public WebBrowserExtendedEvents(ExtendedWebBrowser browser)
			{
				this.browser = browser;
			}
			
			public void NewWindow3(object pDisp, ref bool cancel, ref object flags, ref string urlContext, ref string url)
			{
				NewWindowExtendedEventArgs e = new NewWindowExtendedEventArgs(new Uri(url));
				browser.OnNewWindowExtended(e);
				cancel = e.Cancel;
			}
		}
		

		[ComImport()]
		[Guid("34A715A0-6587-11D0-924A-0020AFC7AC4D")]
		[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIDispatch)]
		[TypeLibType(TypeLibTypeFlags.FHidden)]
		interface DWebBrowserEvents2
		{
			[DispId(273)]
			void NewWindow3([InAttribute(), MarshalAs(UnmanagedType.IDispatch)] object pDisp,
			                [InAttribute(), OutAttribute()]                 ref bool cancel,
			                [InAttribute()]                                 ref object flags,
			                [InAttribute(), MarshalAs(UnmanagedType.BStr)]  ref string urlContext,
			                [InAttribute(), MarshalAs(UnmanagedType.BStr)]  ref string url);
		}
		
		public event NewWindowExtendedEventHandler NewWindowExtended;
		
		private AxHost.ConnectionPointCookie cookie;
		private WebBrowserExtendedEvents wevents;
		
		protected override void CreateSink()
		{
			base.CreateSink();
			wevents = new WebBrowserExtendedEvents(this);
			cookie = new AxHost.ConnectionPointCookie(this.ActiveXInstance, wevents, typeof(DWebBrowserEvents2));
		}
		
		protected override void DetachSink()
		{
			if (cookie != null) {
				cookie.Disconnect();
				cookie = null;
			}
			base.DetachSink();
		}
		
		protected virtual void OnNewWindowExtended(NewWindowExtendedEventArgs e)
		{
			if (NewWindowExtended != null) {
				NewWindowExtended(this, e);
			}
		}
	}
}