MaChat - a chat with a browser for LANs

// WebBrowserEx.h

#pragma once

using namespace System;
using namespace System::Windows::Forms;
using namespace System::Runtime::InteropServices;

// WebBrowser
using namespace mshtml;
using namespace AxSHDocVw;

#ifdef _DEBUG
	using namespace System::Diagnostics;
#endif

namespace MaChat
{
	namespace WebBrowser
	{
		public __value enum DOCHOSTUITYPE
		{
			DOCHOSTUITYPE_BROWSE    = 0,
			DOCHOSTUITYPE_AUTHOR    = 1
		};

		public __value enum ContextMenuConstants
		{
			Default			= 0,
			Image			= 1,
			Control			= 2,
			Table			= 3,
			Selection		= 4,
			Anchor			= 5,
			Unknown			= 6,
			VScroll			= 10,
			HScroll			= 11
		};

		public __value enum DOCHOSTUIDBLCLK
		{
			DOCHOSTUIDBLCLK_DEFAULT         = 0,
			DOCHOSTUIDBLCLK_SHOWPROPERTIES	= 1,
			DOCHOSTUIDBLCLK_SHOWCODE        = 2
		};

		public __value enum DOCHOSTUIFLAG
		{
			DOCHOSTUIFLAG_DIALOG                    = 0x00000001,
			DOCHOSTUIFLAG_DISABLE_HELP_MENU         = 0x00000002,
			DOCHOSTUIFLAG_NO3DBORDER                = 0x00000004,
			DOCHOSTUIFLAG_SCROLL_NO                 = 0x00000008,
			DOCHOSTUIFLAG_DISABLE_SCRIPT_INACTIVE   = 0x00000010,
			DOCHOSTUIFLAG_OPENNEWWIN                = 0x00000020,
			DOCHOSTUIFLAG_DISABLE_OFFSCREEN         = 0x00000040,
			DOCHOSTUIFLAG_FLAT_SCROLLBAR            = 0x00000080,
			DOCHOSTUIFLAG_DIV_BLOCKDEFAULT          = 0x00000100,
			DOCHOSTUIFLAG_ACTIVATE_CLIENTHIT_ONLY   = 0x00000200,
			DOCHOSTUIFLAG_OVERRIDEBEHAVIORFACTORY   = 0x00000400,
			DOCHOSTUIFLAG_CODEPAGELINKEDFONTS       = 0x00000800,
			DOCHOSTUIFLAG_URL_ENCODING_DISABLE_UTF8 = 0x00001000,
			DOCHOSTUIFLAG_URL_ENCODING_ENABLE_UTF8	= 0x00002000,
			DOCHOSTUIFLAG_ENABLE_FORMS_AUTOCOMPLETE = 0x00004000,
			DOCHOSTUIFLAG_ENABLE_INPLACE_NAVIGATION = 0x00010000,
			DOCHOSTUIFLAG_IME_ENABLE_RECONVERSION   = 0x00020000,
			DOCHOSTUIFLAG_THEME                     = 0x00040000,
			DOCHOSTUIFLAG_NOTHEME                   = 0x00080000,
			DOCHOSTUIFLAG_NOPICS                    = 0x00100000,
			DOCHOSTUIFLAG_NO3DOUTERBORDER           = 0x00200000,
			DOCHOSTUIFLAG_DELEGATESIDOFDISPATCH     = 0x00400000
		};

		public __value enum CommandStateChangeConstants
		{
			CSC_UPDATECOMMANDS = 0xFFFFFFFF,
			CSC_NAVIGATEFORWARD = 0x00000001,
			CSC_NAVIGATEBACK = 0x00000002
		};


		public __value enum RefreshConstants
		{
			REFRESH_NORMAL		 = 0,
			REFRESH_IFEXPIRED	 = 1,
			REFRESH_CONTINUE	 = 2,
			REFRESH_COMPLETELY	 = 3
		};

		/*public __value enum BrowserNavConstants
		{
			navOpenInNewWindow = 0x1,
			navNoHistory = 0x2,
			navNoReadFromCache = 0x4,
			navNoWriteToCache = 0x8
			navAllowAutosearch = 0x10,
			navBrowserBar = 0x20,
			navHyperlink = 0x40
		};*/

		[ StructLayout( LayoutKind::Sequential )]
		public __gc struct DOCHOSTUIINFO
		{
			unsigned int cbSize;
			unsigned int dwFlags;
			unsigned int dwDoubleClick;
			[MarshalAs(UnmanagedType::BStr)] String* pchHostCss;
			[MarshalAs(UnmanagedType::BStr)] String* pchHostNS;
		};

		[StructLayout( LayoutKind::Sequential )]
		public __gc struct tagPOINT
		{
			long x;
			long y;
		};

		[StructLayout( LayoutKind::Sequential )]
		public __gc struct tagRECT
		{
			long nLeft;
			long nTop;
			long nRight;
			long nBottom;
		};

		[StructLayout( LayoutKind::Sequential )]
		public __gc struct tagMSG 
		{
			IntPtr hwnd;
			int lParam;
			unsigned int message;
			WebBrowser::tagPOINT* pt;
			unsigned int time;
			unsigned int wParam;
		};

		[ComImport, InterfaceType(ComInterfaceType::InterfaceIsIUnknown), 
			Guid("bd3f23c0-d43e-11cf-893b-00aa00bdce1a")]
		public __gc __interface IDocHostUIHandler 
		{
			[PreserveSig]
			void ShowContextMenu ( unsigned int dwID, tagPOINT* ppt,
				[MarshalAs(UnmanagedType::IUnknown)]Object* pcmdtReserved,
				[MarshalAs(UnmanagedType::IDispatch)]Object* pdispReserved );

			[PreserveSig]
			void GetHostInfo(DOCHOSTUIINFO* pInfo);

			[PreserveSig]
			void ShowUI( unsigned int dwID, 
				[MarshalAs(UnmanagedType::Interface)] IntPtr pActiveObject, 
				[MarshalAs(UnmanagedType::Interface)] IntPtr pCommandTarget, 
				[MarshalAs(UnmanagedType::Interface)] IntPtr pFrame,
				[MarshalAs(UnmanagedType::Interface)] IntPtr pDoc);

			[PreserveSig]
			void HideUI();

			[PreserveSig]
			void UpdateUI();

			[PreserveSig]
			void EnableModeless(int fEnable);

			[PreserveSig]
			void OnDocWindowActivate(int fActivate);

			[PreserveSig]
			void OnFrameWindowActivate(int fActivate);

			[PreserveSig]
			void ResizeBorder( tagRECT* prcBorder, 
				[MarshalAs(UnmanagedType::Interface)] IntPtr pUIWindow,
				int fRameWindow);

			[PreserveSig]
			void TranslateAccelerator( tagMSG* lpmsg, Guid* pguidCmdGroup, unsigned int nCmdID);
			
			[PreserveSig]
			void GetOptionKeyPath( String* pchKey, unsigned int dw);
			
			[PreserveSig]
			void GetDropTarget([MarshalAs(UnmanagedType::Interface)] IntPtr pDropTarget,
				[MarshalAs(UnmanagedType::Interface)] IntPtr ppDropTarget);

			[PreserveSig]
			void GetExternal( Object* ppDispatch);

			[PreserveSig]
			void TranslateUrl( unsigned int dwTranslate, unsigned short pchURLIn,
				IntPtr ppchURLOut);

			[PreserveSig]
			void FilterDataObject( System::Windows::Forms::IDataObject* pDO, System::Windows::Forms::IDataObject* ppDORet);
		};

		[ComImport, InterfaceType(ComInterfaceType::InterfaceIsIUnknown), 
			Guid("3050f3f0-98b5-11cf-bb82-00aa00bdce0b")]
		public __gc __interface ICustomDoc
		{
			[PreserveSig]
			void SetUIHandler(IDocHostUIHandler* pUIHandler);
		};

		public __gc class ContextMenuEventArgs : public EventArgs
		{
		public:
			// Constructor
			ContextMenuEventArgs::ContextMenuEventArgs( ContextMenuConstants eType, 
				System::Drawing::Point point, Object* obj1, Object* obj2 )
			{
				Type = eType;
				Point = point;
				Object1 = obj1;
				Object2 = obj2;
			}

		public:
			// Properties
			__property ContextMenuConstants get_Type () { return m_eType; }
			__property void set_Type ( ContextMenuConstants eType ) { m_eType = eType; }
			__property System::Drawing::Point get_Point () { return m_pointShow; }
			__property void set_Point ( System::Drawing::Point point ) { m_pointShow = point; }

			__property Object* get_Object1 () { return m_obj1; }
			__property void set_Object1 ( Object* obj1 ) { m_obj1 = obj1; }
			__property Object* get_Object2 () { return m_obj2; }
			__property void set_Object2 ( Object* obj2 ) { m_obj2 = obj2; }

		private:
			ContextMenuConstants m_eType;
			System::Drawing::Point m_pointShow;
			Object* m_obj1;
			Object* m_obj2;
		};

		public __delegate void ContextMenuEventHandler ( Object* sender, ContextMenuEventArgs* e  );

		public __gc class WebBrowserEx : public AxWebBrowser, 
			public IDocHostUIHandler
		{
		public:
			// Constructor
			WebBrowserEx::WebBrowserEx( Control* controlParent );

			void OnWebStateChange( Object* sender, DWebBrowserEvents2_CommandStateChangeEvent* e );
			// Navigate functions
			////////////////////////////////////////////////////
			void Navigate ( String* strUrl );
			void NavigateNW ( String* strUrl );

		private:
			// IDocHostUIHandler
			////////////////////////////////////////////////////
			void ShowContextMenu( unsigned int dwID, tagPOINT* ppt, 
				[MarshalAs(UnmanagedType::IUnknown)] Object* pcmdtReserved, 
				[MarshalAs(UnmanagedType::IDispatch)]Object* pdispReserved );
			void GetHostInfo( DOCHOSTUIINFO* pInfo );
			void ShowUI(unsigned int dwID,
				[MarshalAs(UnmanagedType::Interface)] IntPtr pActiveObject,
				[MarshalAs(UnmanagedType::Interface)] IntPtr pCommandTarget,
				[MarshalAs(UnmanagedType::Interface)] IntPtr pFrame,
				[MarshalAs(UnmanagedType::Interface)] IntPtr pDoc);
			void HideUI();
			void UpdateUI();
			void EnableModeless(int fEnable);
			void OnDocWindowActivate(int fActivate);
			void OnFrameWindowActivate(int fActivate);
			void ResizeBorder( tagRECT* prcBorder,
				[MarshalAs(UnmanagedType::Interface)] IntPtr pUIWindow, int fRameWindow);
			void TranslateAccelerator( tagMSG* lpmsg, Guid* pguidCmdGroup, unsigned int nCmdID);
			void GetOptionKeyPath( String* pchKey, unsigned int dw);
			void GetDropTarget( [MarshalAs(UnmanagedType::Interface)] IntPtr pDropTarget,
				[MarshalAs(UnmanagedType::Interface)] IntPtr ppDropTarget);
			void GetExternal( Object* ppDispatch );
			void TranslateUrl(unsigned int dwTranslate, unsigned short pchURLIn, IntPtr ppchURLOut);
			void FilterDataObject( System::Windows::Forms::IDataObject* pDO, System::Windows::Forms::IDataObject* ppDORet);

		public:
			// Event
			__event ContextMenuEventHandler* ContextMenu;

			// Properties
			__property bool get_CanGoBack () { return m_bCanGoBack; }
			__property bool get_CanGoForward () { return m_bCanGoForward; }

		private:
			bool m_bCanGoBack;
			bool m_bCanGoForward;
		};
	}
}