dlls/winex11.drv/xdnd.c - wine - Git at Google

 /*
  * XDND handler code
  *
  * Copyright 2003 Ulrich Czekalla
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */

 #include "config.h"
 #include "wine/port.h"

 #include <string.h>
 #ifdef HAVE_UNISTD_H
 # include <unistd.h>
 #endif
 #include <stdarg.h>

 #include "windef.h"
 #include "winbase.h"
 #include "wingdi.h"
 #include "winuser.h"
 #include "winerror.h"
 #include "wownt32.h"

 #include "x11drv.h"
 #include "shlobj.h"  /* DROPFILES */

 #include "wine/debug.h"

 WINE_DEFAULT_DEBUG_CHANNEL(xdnd);

 /* Maximum wait time for selection notify */
 #define SELECTION_RETRIES 500  /* wait for .1 seconds */
 #define SELECTION_WAIT    1000 /* us */

 typedef struct tagXDNDDATA
 {
     int cf_win;
     Atom cf_xdnd;
     void *data;
     unsigned int size;
     struct tagXDNDDATA *next;
 } XDNDDATA, *LPXDNDDATA;

 static LPXDNDDATA XDNDData = NULL;
 static POINT XDNDxy = { 0, 0 };

 static void X11DRV_XDND_InsertXDNDData(int property, int format, void* data, unsigned int len);
 static int X11DRV_XDND_DeconstructTextPlain(int property, void* data, int len);
 static int X11DRV_XDND_DeconstructTextHTML(int property, void* data, int len);
 static int X11DRV_XDND_MapFormat(unsigned int property, unsigned char *data, int len);
 static void X11DRV_XDND_ResolveProperty(Display *display, Window xwin, Time tm,
     Atom *types, unsigned long *count);
 static void X11DRV_XDND_SendDropFiles(HWND hwnd);
 static void X11DRV_XDND_FreeDragDropOp(void);
 static unsigned int X11DRV_XDND_UnixToDos(char** lpdest, char* lpsrc, int len);
 static DROPFILES* X11DRV_XDND_BuildDropFiles(char* filename, unsigned int len, POINT pt);

 static CRITICAL_SECTION xdnd_cs;
 static CRITICAL_SECTION_DEBUG critsect_debug =
 {
     0, 0, &xdnd_cs,
     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
       0, 0, { (DWORD_PTR)(__FILE__ ": xdnd_cs") }
 };
 static CRITICAL_SECTION xdnd_cs = { &critsect_debug, -1, 0, 0, 0, 0 };


 /**************************************************************************
  * X11DRV_XDND_EnterEvent
  *
  * Handle an XdndEnter event.
  */
 void X11DRV_XDND_EnterEvent( HWND hWnd, XClientMessageEvent *event )
 {
     Atom *xdndtypes;
     unsigned long count = 0;

     TRACE("ver(%ld) check-XdndTypeList(%ld) data=%ld,%ld,%ld,%ld,%ld\n",
           (event->data.l[1] & 0xFF000000) >> 24, (event->data.l[1] & 1),
           event->data.l[0], event->data.l[1], event->data.l[2],
           event->data.l[3], event->data.l[4]);

     /* If the source supports more than 3 data types we retrieve
      * the entire list. */
     if (event->data.l[1] & 1)
     {
         Atom acttype;
         int actfmt;
         unsigned long bytesret;

         /* Request supported formats from source window */
         wine_tsx11_lock();
         XGetWindowProperty(event->display, event->data.l[0], x11drv_atom(XdndTypeList),
                            0, 65535, FALSE, AnyPropertyType, &acttype, &actfmt, &count,
                            &bytesret, (unsigned char**)&xdndtypes);
         wine_tsx11_unlock();
     }
     else
     {
         count = 3;
         xdndtypes = (Atom*) &event->data.l[2];
     }

     if (TRACE_ON(xdnd))
     {
         unsigned int i = 0;

         wine_tsx11_lock();
         for (; i < count; i++)
         {
             if (xdndtypes[i] != 0)
             {
                 char * pn = XGetAtomName(event->display, xdndtypes[i]);
                 TRACE("XDNDEnterAtom %ld: %s\n", xdndtypes[i], pn);
                 XFree(pn);
             }
         }
         wine_tsx11_unlock();
     }

     /* Do a one-time data read and cache results */
     X11DRV_XDND_ResolveProperty(event->display, event->window,
                                 event->data.l[1], xdndtypes, &count);

     if (event->data.l[1] & 1)
         XFree(xdndtypes);
 }

 /**************************************************************************
  * X11DRV_XDND_PositionEvent
  *
  * Handle an XdndPosition event.
  */
 void X11DRV_XDND_PositionEvent( HWND hWnd, XClientMessageEvent *event )
 {
     XClientMessageEvent e;
     int accept = 0; /* Assume we're not accepting */

     XDNDxy.x = event->data.l[2] >> 16;
     XDNDxy.y = event->data.l[2] & 0xFFFF;

     /* FIXME: Notify OLE of DragEnter. Result determines if we accept */

     if (GetWindowLongW( hWnd, GWL_EXSTYLE ) & WS_EX_ACCEPTFILES)
         accept = 1;

     TRACE("action req: %ld accept(%d) at x(%d),y(%d)\n",
           event->data.l[4], accept, XDNDxy.x, XDNDxy.y);

     /*
      * Let source know if we're accepting the drop by
      * sending a status message.
      */
     e.type = ClientMessage;
     e.display = event->display;
     e.window = event->data.l[0];
     e.message_type = x11drv_atom(XdndStatus);
     e.format = 32;
     e.data.l[0] = event->window;
     e.data.l[1] = accept;
     e.data.l[2] = 0; /* Empty Rect */
     e.data.l[3] = 0; /* Empty Rect */
     if (accept)
         e.data.l[4] = event->data.l[4];
     else
         e.data.l[4] = None;
     wine_tsx11_lock();
     XSendEvent(event->display, event->data.l[0], False, NoEventMask, (XEvent*)&e);
     wine_tsx11_unlock();

     /* FIXME: if drag accepted notify OLE of DragOver */
 }

 /**************************************************************************
  * X11DRV_XDND_DropEvent
  *
  * Handle an XdndDrop event.
  */
 void X11DRV_XDND_DropEvent( HWND hWnd, XClientMessageEvent *event )
 {
     XClientMessageEvent e;

     TRACE("\n");

     /* If we have a HDROP type we send a WM_ACCEPTFILES.*/
     if (GetWindowLongW( hWnd, GWL_EXSTYLE ) & WS_EX_ACCEPTFILES)
         X11DRV_XDND_SendDropFiles( hWnd );

     /* FIXME: Notify OLE of Drop */
     X11DRV_XDND_FreeDragDropOp();

     /* Tell the target we are finished. */
     memset(&e, 0, sizeof(e));
     e.type = ClientMessage;
     e.display = event->display;
     e.window = event->data.l[0];
     e.message_type = x11drv_atom(XdndFinished);
     e.format = 32;
     e.data.l[0] = event->window;
     wine_tsx11_lock();
     XSendEvent(event->display, event->data.l[0], False, NoEventMask, (XEvent*)&e);
     wine_tsx11_unlock();
 }

 /**************************************************************************
  * X11DRV_XDND_LeaveEvent
  *
  * Handle an XdndLeave event.
  */
 void X11DRV_XDND_LeaveEvent( HWND hWnd, XClientMessageEvent *event )
 {
     TRACE("DND Operation canceled\n");

     X11DRV_XDND_FreeDragDropOp();

     /* FIXME: Notify OLE of DragLeave */
 }


 /**************************************************************************
  * X11DRV_XDND_ResolveProperty
  *
  * Resolve all MIME types to windows clipboard formats. All data is cached.
  */
 static void X11DRV_XDND_ResolveProperty(Display *display, Window xwin, Time tm,
                                         Atom *types, unsigned long *count)
 {
     unsigned int i, j;
     BOOL res;
     XEvent xe;
     Atom acttype;
     int actfmt;
     unsigned long bytesret, icount;
     int entries = 0;
     unsigned char* data = NULL;

     TRACE("count(%ld)\n", *count);

     X11DRV_XDND_FreeDragDropOp(); /* Clear previously cached data */

     for (i = 0; i < *count; i++)
     {
         TRACE("requesting atom %ld from xwin %ld\n", types[i], xwin);

         if (types[i] == 0)
             continue;

         wine_tsx11_lock();
         XConvertSelection(display, x11drv_atom(XdndSelection), types[i],
                           x11drv_atom(XdndTarget), xwin, /*tm*/CurrentTime);
         wine_tsx11_unlock();

         /*
          * Wait for SelectionNotify
          */
         for (j = 0; j < SELECTION_RETRIES; j++)
         {
             wine_tsx11_lock();
             res = XCheckTypedWindowEvent(display, xwin, SelectionNotify, &xe);
             wine_tsx11_unlock();
             if (res && xe.xselection.selection == x11drv_atom(XdndSelection)) break;

             usleep(SELECTION_WAIT);
         }

         if (xe.xselection.property == None)
             continue;

         wine_tsx11_lock();
         XGetWindowProperty(display, xwin, x11drv_atom(XdndTarget), 0, 65535, FALSE,
             AnyPropertyType, &acttype, &actfmt, &icount, &bytesret, &data);
         wine_tsx11_unlock();

         entries += X11DRV_XDND_MapFormat(types[i], data, icount * (actfmt / 8));
         wine_tsx11_lock();
         XFree(data);
         wine_tsx11_unlock();
     }

     *count = entries;
 }


 /**************************************************************************
  * X11DRV_XDND_InsertXDNDData
  *
  * Cache available XDND property
  */
 static void X11DRV_XDND_InsertXDNDData(int property, int format, void* data, unsigned int len)
 {
     LPXDNDDATA current = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(XDNDDATA));

     if (current)
     {
         EnterCriticalSection(&xdnd_cs);
         current->next = XDNDData;
         current->cf_xdnd = property;
         current->cf_win = format;
         current->data = data;
         current->size = len;
         XDNDData = current;
         LeaveCriticalSection(&xdnd_cs);
     }
 }


 /**************************************************************************
  * X11DRV_XDND_MapFormat
  *
  * Map XDND MIME format to windows clipboard format.
  */
 static int X11DRV_XDND_MapFormat(unsigned int property, unsigned char *data, int len)
 {
     void* xdata;
     int count = 0;

     TRACE("%d: %s\n", property, data);

     /* Always include the raw type */
     xdata = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, len);
     memcpy(xdata, data, len);
     X11DRV_XDND_InsertXDNDData(property, property, xdata, len);
     count++;

     if (property == x11drv_atom(text_plain))
         count += X11DRV_XDND_DeconstructTextPlain(property, data, len);
     else if (property == x11drv_atom(text_html))
         count += X11DRV_XDND_DeconstructTextHTML(property, data, len);

     return count;
 }


 /**************************************************************************
  * X11DRV_XDND_DeconstructTextPlain
  *
  * Interpret text/plain Data and add records to <dndfmt> linked list
  */
 static int X11DRV_XDND_DeconstructTextPlain(int property, void* data, int len)
 {
     char *p = (char*) data;
     char* dostext;
     int count = 0;

     /* Always suppply plain text */
     X11DRV_XDND_UnixToDos(&dostext, (char*)data, len);
     X11DRV_XDND_InsertXDNDData(property, CF_TEXT, dostext, strlen(dostext));
     count++;

     TRACE("CF_TEXT (%d): %s\n", CF_TEXT, dostext);

     /* Check for additional mappings */
     while (*p != '\0' && *p != ':') /* Advance to end of protocol */
         p++;

     if (*p == ':')
     {
         if (!strncasecmp(data, "http", 4))
         {
             X11DRV_XDND_InsertXDNDData(property, RegisterClipboardFormatA("UniformResourceLocator"),
                 strdup(dostext), strlen(dostext));
                 count++;

             TRACE("UniformResourceLocator: %s\n", dostext);
         }
         else if (!strncasecmp(data, "file", 4))
         {
             DROPFILES* pdf;

             pdf = X11DRV_XDND_BuildDropFiles(p+1, len - 5, XDNDxy);
             if (pdf)
             {
                 unsigned int size = HeapSize(GetProcessHeap(), 0, pdf);

                 X11DRV_XDND_InsertXDNDData(property, CF_HDROP, pdf, size);
                 count++;
             }

             TRACE("CF_HDROP: %p\n", pdf);
         }
     }

     return count;
 }


 /**************************************************************************
  * X11DRV_XDND_DeconstructTextHTML
  *
  * Interpret text/html data and add records to <dndfmt> linked list
  */
 static int X11DRV_XDND_DeconstructTextHTML(int property, void* data, int len)
 {
     char* dostext;

     X11DRV_XDND_UnixToDos(&dostext, data, len);

     X11DRV_XDND_InsertXDNDData(property,
         RegisterClipboardFormatA("UniformResourceLocator"), dostext, strlen(dostext));

     TRACE("UniformResourceLocator: %s\n", dostext);

     return 1;
 }


 /**************************************************************************
  * X11DRV_XDND_SendDropFiles
  */
 static void X11DRV_XDND_SendDropFiles(HWND hwnd)
 {
     LPXDNDDATA current;

     EnterCriticalSection(&xdnd_cs);

     current = XDNDData;

     /* Find CF_HDROP type if any */
     while (current != NULL)
     {
         if (current->cf_win == CF_HDROP)
             break;
         current = current->next;
     }

     if (current != NULL)
     {
         DROPFILES *lpDrop = (DROPFILES*) current->data;

         if (lpDrop)
         {
             lpDrop->pt.x = XDNDxy.x;
             lpDrop->pt.y = XDNDxy.y;

             TRACE("Sending WM_DROPFILES: hWnd(0x%p) %p(%s)\n", hwnd,
                 ((char*)lpDrop) + lpDrop->pFiles, ((char*)lpDrop) + lpDrop->pFiles);

             PostMessageA(hwnd, WM_DROPFILES, (WPARAM)lpDrop, 0L);
         }
     }

     LeaveCriticalSection(&xdnd_cs);
 }


 /**************************************************************************
  * X11DRV_XDND_FreeDragDropOp
  */
 static void X11DRV_XDND_FreeDragDropOp(void)
 {
     LPXDNDDATA next;
     LPXDNDDATA current;

     TRACE("\n");

     EnterCriticalSection(&xdnd_cs);

     current = XDNDData;

     /** Free data cache */
     while (current != NULL)
     {
         next = current->next;
         HeapFree(GetProcessHeap(), 0, current);
         current = next;
     }

     XDNDData = NULL;
     XDNDxy.x = XDNDxy.y = 0;

     LeaveCriticalSection(&xdnd_cs);
 }


 /**************************************************************************
  * X11DRV_XDND_BuildDropFiles
  */
 static DROPFILES* X11DRV_XDND_BuildDropFiles(char* filename, unsigned int len, POINT pt)
 {
     char* pfn;
     int pathlen;
     char path[MAX_PATH];
     DROPFILES *lpDrop = NULL;

     /* Advance to last starting slash */
     pfn = filename + 1;
     while (*pfn && (*pfn == '\\' || *pfn =='/'))
     {
         pfn++;
         filename++;
     }

     /* Remove any trailing \r or \n */
     while (*pfn)
     {
         if (*pfn == '\r' || *pfn == '\n')
         {
             *pfn = 0;
             break;
         }
         pfn++;
     }

     TRACE("%s\n", filename);

     pathlen = GetLongPathNameA(filename, path, MAX_PATH);
     if (pathlen)
     {
         lpDrop = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(DROPFILES) + pathlen + 1);

         lpDrop->pFiles = sizeof(DROPFILES);
         lpDrop->pt.x = pt.x;
         lpDrop->pt.y = pt.y;
         lpDrop->fNC = 0;
         lpDrop->fWide = FALSE;

         strcpy(((char*)lpDrop)+lpDrop->pFiles, path);
     }

     TRACE("resolved %s\n", lpDrop ? filename : NULL);

     return lpDrop;
 }


 /**************************************************************************
  * X11DRV_XDND_UnixToDos
  */
 static unsigned int X11DRV_XDND_UnixToDos(char** lpdest, char* lpsrc, int len)
 {
     int i;
     unsigned int destlen, lines;

     for (i = 0, lines = 0; i <= len; i++)
     {
         if (lpsrc[i] == '\n')
             lines++;
     }

     destlen = len + lines + 1;

     if (lpdest)
     {
         char* lpstr = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, destlen);
         for (i = 0, lines = 0; i <= len; i++)
         {
             if (lpsrc[i] == '\n')
                 lpstr[++lines + i] = '\r';
             lpstr[lines + i] = lpsrc[i];
         }

         *lpdest = lpstr;
     }

     return lines;
 }
	/*
	* XDND handler code
	*
	* Copyright 2003 Ulrich Czekalla
	*
	* This library is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public
	* License as published by the Free Software Foundation; either
	* version 2.1 of the License, or (at your option) any later version.
	*
	* This library is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public
	* License along with this library; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
	*/

	#include "config.h"
	#include "wine/port.h"

	#include <string.h>
	#ifdef HAVE_UNISTD_H
	# include <unistd.h>
	#endif
	#include <stdarg.h>

	#include "windef.h"
	#include "winbase.h"
	#include "wingdi.h"
	#include "winuser.h"
	#include "winerror.h"
	#include "wownt32.h"

	#include "x11drv.h"
	#include "shlobj.h" /* DROPFILES */

	#include "wine/debug.h"

	WINE_DEFAULT_DEBUG_CHANNEL(xdnd);

	/* Maximum wait time for selection notify */
	#define SELECTION_RETRIES 500 /* wait for .1 seconds */
	#define SELECTION_WAIT 1000 /* us */

	typedef struct tagXDNDDATA
	{
	int cf_win;
	Atom cf_xdnd;
	void *data;
	unsigned int size;
	struct tagXDNDDATA *next;
	} XDNDDATA, *LPXDNDDATA;

	static LPXDNDDATA XDNDData = NULL;
	static POINT XDNDxy = { 0, 0 };

	static void X11DRV_XDND_InsertXDNDData(int property, int format, void* data, unsigned int len);
	static int X11DRV_XDND_DeconstructTextPlain(int property, void* data, int len);
	static int X11DRV_XDND_DeconstructTextHTML(int property, void* data, int len);
	static int X11DRV_XDND_MapFormat(unsigned int property, unsigned char *data, int len);
	static void X11DRV_XDND_ResolveProperty(Display *display, Window xwin, Time tm,
	Atom types, unsigned long count);
	static void X11DRV_XDND_SendDropFiles(HWND hwnd);
	static void X11DRV_XDND_FreeDragDropOp(void);
	static unsigned int X11DRV_XDND_UnixToDos(char** lpdest, char* lpsrc, int len);
	static DROPFILES* X11DRV_XDND_BuildDropFiles(char* filename, unsigned int len, POINT pt);

	static CRITICAL_SECTION xdnd_cs;
	static CRITICAL_SECTION_DEBUG critsect_debug =
	{
	0, 0, &xdnd_cs,
	{ &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
	0, 0, { (DWORD_PTR)(__FILE__ ": xdnd_cs") }
	};
	static CRITICAL_SECTION xdnd_cs = { &critsect_debug, -1, 0, 0, 0, 0 };


	/**************************************************************************
	* X11DRV_XDND_EnterEvent
	*
	* Handle an XdndEnter event.
	*/
	void X11DRV_XDND_EnterEvent( HWND hWnd, XClientMessageEvent *event )
	{
	Atom *xdndtypes;
	unsigned long count = 0;

	TRACE("ver(%ld) check-XdndTypeList(%ld) data=%ld,%ld,%ld,%ld,%ld\n",
	(event->data.l[1] & 0xFF000000) >> 24, (event->data.l[1] & 1),
	event->data.l[0], event->data.l[1], event->data.l[2],
	event->data.l[3], event->data.l[4]);

	/* If the source supports more than 3 data types we retrieve
	* the entire list. */
	if (event->data.l[1] & 1)
	{
	Atom acttype;
	int actfmt;
	unsigned long bytesret;

	/* Request supported formats from source window */
	wine_tsx11_lock();
	XGetWindowProperty(event->display, event->data.l[0], x11drv_atom(XdndTypeList),
	0, 65535, FALSE, AnyPropertyType, &acttype, &actfmt, &count,
	&bytesret, (unsigned char**)&xdndtypes);
	wine_tsx11_unlock();
	}
	else
	{
	count = 3;
	xdndtypes = (Atom*) &event->data.l[2];
	}

	if (TRACE_ON(xdnd))
	{
	unsigned int i = 0;

	wine_tsx11_lock();
	for (; i < count; i++)
	{
	if (xdndtypes[i] != 0)
	{
	char * pn = XGetAtomName(event->display, xdndtypes[i]);
	TRACE("XDNDEnterAtom %ld: %s\n", xdndtypes[i], pn);
	XFree(pn);
	}
	}
	wine_tsx11_unlock();
	}

	/* Do a one-time data read and cache results */
	X11DRV_XDND_ResolveProperty(event->display, event->window,
	event->data.l[1], xdndtypes, &count);

	if (event->data.l[1] & 1)
	XFree(xdndtypes);
	}

	/**************************************************************************
	* X11DRV_XDND_PositionEvent
	*
	* Handle an XdndPosition event.
	*/
	void X11DRV_XDND_PositionEvent( HWND hWnd, XClientMessageEvent *event )
	{
	XClientMessageEvent e;
	int accept = 0; /* Assume we're not accepting */

	XDNDxy.x = event->data.l[2] >> 16;
	XDNDxy.y = event->data.l[2] & 0xFFFF;

	/* FIXME: Notify OLE of DragEnter. Result determines if we accept */

	if (GetWindowLongW( hWnd, GWL_EXSTYLE ) & WS_EX_ACCEPTFILES)
	accept = 1;

	TRACE("action req: %ld accept(%d) at x(%d),y(%d)\n",
	event->data.l[4], accept, XDNDxy.x, XDNDxy.y);

	/*
	* Let source know if we're accepting the drop by
	* sending a status message.
	*/
	e.type = ClientMessage;
	e.display = event->display;
	e.window = event->data.l[0];
	e.message_type = x11drv_atom(XdndStatus);
	e.format = 32;
	e.data.l[0] = event->window;
	e.data.l[1] = accept;
	e.data.l[2] = 0; /* Empty Rect */
	e.data.l[3] = 0; /* Empty Rect */
	if (accept)
	e.data.l[4] = event->data.l[4];
	else
	e.data.l[4] = None;
	wine_tsx11_lock();
	XSendEvent(event->display, event->data.l[0], False, NoEventMask, (XEvent*)&e);
	wine_tsx11_unlock();

	/* FIXME: if drag accepted notify OLE of DragOver */
	}

	/**************************************************************************
	* X11DRV_XDND_DropEvent
	*
	* Handle an XdndDrop event.
	*/
	void X11DRV_XDND_DropEvent( HWND hWnd, XClientMessageEvent *event )
	{
	XClientMessageEvent e;

	TRACE("\n");

	/* If we have a HDROP type we send a WM_ACCEPTFILES.*/
	if (GetWindowLongW( hWnd, GWL_EXSTYLE ) & WS_EX_ACCEPTFILES)
	X11DRV_XDND_SendDropFiles( hWnd );

	/* FIXME: Notify OLE of Drop */
	X11DRV_XDND_FreeDragDropOp();

	/* Tell the target we are finished. */
	memset(&e, 0, sizeof(e));
	e.type = ClientMessage;
	e.display = event->display;
	e.window = event->data.l[0];
	e.message_type = x11drv_atom(XdndFinished);
	e.format = 32;
	e.data.l[0] = event->window;
	wine_tsx11_lock();
	XSendEvent(event->display, event->data.l[0], False, NoEventMask, (XEvent*)&e);
	wine_tsx11_unlock();
	}

	/**************************************************************************
	* X11DRV_XDND_LeaveEvent
	*
	* Handle an XdndLeave event.
	*/
	void X11DRV_XDND_LeaveEvent( HWND hWnd, XClientMessageEvent *event )
	{
	TRACE("DND Operation canceled\n");

	X11DRV_XDND_FreeDragDropOp();

	/* FIXME: Notify OLE of DragLeave */
	}


	/**************************************************************************
	* X11DRV_XDND_ResolveProperty
	*
	* Resolve all MIME types to windows clipboard formats. All data is cached.
	*/
	static void X11DRV_XDND_ResolveProperty(Display *display, Window xwin, Time tm,
	Atom types, unsigned long count)
	{
	unsigned int i, j;
	BOOL res;
	XEvent xe;
	Atom acttype;
	int actfmt;
	unsigned long bytesret, icount;
	int entries = 0;
	unsigned char* data = NULL;

	TRACE("count(%ld)\n", *count);

	X11DRV_XDND_FreeDragDropOp(); /* Clear previously cached data */

	for (i = 0; i < *count; i++)
	{
	TRACE("requesting atom %ld from xwin %ld\n", types[i], xwin);

	if (types[i] == 0)
	continue;

	wine_tsx11_lock();
	XConvertSelection(display, x11drv_atom(XdndSelection), types[i],
	x11drv_atom(XdndTarget), xwin, /tm/CurrentTime);
	wine_tsx11_unlock();

	/*
	* Wait for SelectionNotify
	*/
	for (j = 0; j < SELECTION_RETRIES; j++)
	{
	wine_tsx11_lock();
	res = XCheckTypedWindowEvent(display, xwin, SelectionNotify, &xe);
	wine_tsx11_unlock();
	if (res && xe.xselection.selection == x11drv_atom(XdndSelection)) break;

	usleep(SELECTION_WAIT);
	}

	if (xe.xselection.property == None)
	continue;

	wine_tsx11_lock();
	XGetWindowProperty(display, xwin, x11drv_atom(XdndTarget), 0, 65535, FALSE,
	AnyPropertyType, &acttype, &actfmt, &icount, &bytesret, &data);
	wine_tsx11_unlock();

	entries += X11DRV_XDND_MapFormat(types[i], data, icount * (actfmt / 8));
	wine_tsx11_lock();
	XFree(data);
	wine_tsx11_unlock();
	}

	*count = entries;
	}


	/**************************************************************************
	* X11DRV_XDND_InsertXDNDData
	*
	* Cache available XDND property
	*/
	static void X11DRV_XDND_InsertXDNDData(int property, int format, void* data, unsigned int len)
	{
	LPXDNDDATA current = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(XDNDDATA));

	if (current)
	{
	EnterCriticalSection(&xdnd_cs);
	current->next = XDNDData;
	current->cf_xdnd = property;
	current->cf_win = format;
	current->data = data;
	current->size = len;
	XDNDData = current;
	LeaveCriticalSection(&xdnd_cs);
	}
	}


	/**************************************************************************
	* X11DRV_XDND_MapFormat
	*
	* Map XDND MIME format to windows clipboard format.
	*/
	static int X11DRV_XDND_MapFormat(unsigned int property, unsigned char *data, int len)
	{
	void* xdata;
	int count = 0;

	TRACE("%d: %s\n", property, data);

	/* Always include the raw type */
	xdata = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, len);
	memcpy(xdata, data, len);
	X11DRV_XDND_InsertXDNDData(property, property, xdata, len);
	count++;

	if (property == x11drv_atom(text_plain))
	count += X11DRV_XDND_DeconstructTextPlain(property, data, len);
	else if (property == x11drv_atom(text_html))
	count += X11DRV_XDND_DeconstructTextHTML(property, data, len);

	return count;
	}


	/**************************************************************************
	* X11DRV_XDND_DeconstructTextPlain
	*
	* Interpret text/plain Data and add records to <dndfmt> linked list
	*/
	static int X11DRV_XDND_DeconstructTextPlain(int property, void* data, int len)
	{
	char p = (char) data;
	char* dostext;
	int count = 0;

	/* Always suppply plain text */
	X11DRV_XDND_UnixToDos(&dostext, (char*)data, len);
	X11DRV_XDND_InsertXDNDData(property, CF_TEXT, dostext, strlen(dostext));
	count++;

	TRACE("CF_TEXT (%d): %s\n", CF_TEXT, dostext);

	/* Check for additional mappings */
	while (p != '\0' && p != ':') /* Advance to end of protocol */
	p++;

	if (*p == ':')
	{
	if (!strncasecmp(data, "http", 4))
	{
	X11DRV_XDND_InsertXDNDData(property, RegisterClipboardFormatA("UniformResourceLocator"),
	strdup(dostext), strlen(dostext));
	count++;

	TRACE("UniformResourceLocator: %s\n", dostext);
	}
	else if (!strncasecmp(data, "file", 4))
	{
	DROPFILES* pdf;

	pdf = X11DRV_XDND_BuildDropFiles(p+1, len - 5, XDNDxy);
	if (pdf)
	{
	unsigned int size = HeapSize(GetProcessHeap(), 0, pdf);

	X11DRV_XDND_InsertXDNDData(property, CF_HDROP, pdf, size);
	count++;
	}

	TRACE("CF_HDROP: %p\n", pdf);
	}
	}

	return count;
	}


	/**************************************************************************
	* X11DRV_XDND_DeconstructTextHTML
	*
	* Interpret text/html data and add records to <dndfmt> linked list
	*/
	static int X11DRV_XDND_DeconstructTextHTML(int property, void* data, int len)
	{
	char* dostext;

	X11DRV_XDND_UnixToDos(&dostext, data, len);

	X11DRV_XDND_InsertXDNDData(property,
	RegisterClipboardFormatA("UniformResourceLocator"), dostext, strlen(dostext));

	TRACE("UniformResourceLocator: %s\n", dostext);

	return 1;
	}


	/**************************************************************************
	* X11DRV_XDND_SendDropFiles
	*/
	static void X11DRV_XDND_SendDropFiles(HWND hwnd)
	{
	LPXDNDDATA current;

	EnterCriticalSection(&xdnd_cs);

	current = XDNDData;

	/* Find CF_HDROP type if any */
	while (current != NULL)
	{
	if (current->cf_win == CF_HDROP)
	break;
	current = current->next;
	}

	if (current != NULL)
	{
	DROPFILES lpDrop = (DROPFILES) current->data;

	if (lpDrop)
	{
	lpDrop->pt.x = XDNDxy.x;
	lpDrop->pt.y = XDNDxy.y;

	TRACE("Sending WM_DROPFILES: hWnd(0x%p) %p(%s)\n", hwnd,
	((char)lpDrop) + lpDrop->pFiles, ((char)lpDrop) + lpDrop->pFiles);

	PostMessageA(hwnd, WM_DROPFILES, (WPARAM)lpDrop, 0L);
	}
	}

	LeaveCriticalSection(&xdnd_cs);
	}


	/**************************************************************************
	* X11DRV_XDND_FreeDragDropOp
	*/
	static void X11DRV_XDND_FreeDragDropOp(void)
	{
	LPXDNDDATA next;
	LPXDNDDATA current;

	TRACE("\n");

	EnterCriticalSection(&xdnd_cs);

	current = XDNDData;

	/** Free data cache */
	while (current != NULL)
	{
	next = current->next;
	HeapFree(GetProcessHeap(), 0, current);
	current = next;
	}

	XDNDData = NULL;
	XDNDxy.x = XDNDxy.y = 0;

	LeaveCriticalSection(&xdnd_cs);
	}



	/**************************************************************************
	* X11DRV_XDND_BuildDropFiles
	*/
	static DROPFILES* X11DRV_XDND_BuildDropFiles(char* filename, unsigned int len, POINT pt)
	{
	char* pfn;
	int pathlen;
	char path[MAX_PATH];
	DROPFILES *lpDrop = NULL;

	/* Advance to last starting slash */
	pfn = filename + 1;
	while (pfn && (pfn == '\\' \|\| *pfn =='/'))
	{
	pfn++;
	filename++;
	}

	/* Remove any trailing \r or \n */
	while (*pfn)
	{
	if (pfn == '\r' \|\| pfn == '\n')
	{
	*pfn = 0;
	break;
	}
	pfn++;
	}

	TRACE("%s\n", filename);

	pathlen = GetLongPathNameA(filename, path, MAX_PATH);
	if (pathlen)
	{
	lpDrop = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(DROPFILES) + pathlen + 1);

	lpDrop->pFiles = sizeof(DROPFILES);
	lpDrop->pt.x = pt.x;
	lpDrop->pt.y = pt.y;
	lpDrop->fNC = 0;
	lpDrop->fWide = FALSE;

	strcpy(((char*)lpDrop)+lpDrop->pFiles, path);
	}

	TRACE("resolved %s\n", lpDrop ? filename : NULL);

	return lpDrop;
	}


	/**************************************************************************
	* X11DRV_XDND_UnixToDos
	*/
	static unsigned int X11DRV_XDND_UnixToDos(char** lpdest, char* lpsrc, int len)
	{
	int i;
	unsigned int destlen, lines;

	for (i = 0, lines = 0; i <= len; i++)
	{
	if (lpsrc[i] == '\n')
	lines++;
	}

	destlen = len + lines + 1;

	if (lpdest)
	{
	char* lpstr = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, destlen);
	for (i = 0, lines = 0; i <= len; i++)
	{
	if (lpsrc[i] == '\n')
	lpstr[++lines + i] = '\r';
	lpstr[lines + i] = lpsrc[i];
	}

	*lpdest = lpstr;
	}

	return lines;
	}