Sweden-Number/dlls/shell32/changenotify.c

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/*
* shell change notification
*
* Copyright 2000 Juergen Schmied
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdarg.h>
#include <string.h>
#define NONAMELESSUNION
#define NONAMELESSSTRUCT
#include "windef.h"
#include "winbase.h"
#include "wine/debug.h"
#include "wingdi.h"
#include "shell32_main.h"
WINE_DEFAULT_DEBUG_CHANNEL(shell);
static CRITICAL_SECTION SHELL32_ChangenotifyCS;
static CRITICAL_SECTION_DEBUG critsect_debug =
{
0, 0, &SHELL32_ChangenotifyCS,
{ &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
0, 0, { 0, (DWORD)(__FILE__ ": SHELL32_ChangenotifyCS") }
};
static CRITICAL_SECTION SHELL32_ChangenotifyCS = { &critsect_debug, -1, 0, 0, 0, 0 };
typedef SHChangeNotifyEntry *LPNOTIFYREGISTER;
/* internal list of notification clients (internal) */
typedef struct _NOTIFICATIONLIST
{
struct _NOTIFICATIONLIST *next;
struct _NOTIFICATIONLIST *prev;
HWND hwnd; /* window to notify */
DWORD uMsg; /* message to send */
LPNOTIFYREGISTER apidl; /* array of entries to watch*/
UINT cidl; /* number of pidls in array */
LONG wEventMask; /* subscribed events */
LONG wSignalledEvent; /* event that occurred */
DWORD dwFlags; /* client flags */
LPCITEMIDLIST pidlSignaled; /*pidl of the path that caused the signal*/
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} NOTIFICATIONLIST, *LPNOTIFICATIONLIST;
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static NOTIFICATIONLIST *head, *tail;
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#define SHCNE_NOITEMEVENTS ( \
SHCNE_ASSOCCHANGED )
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#define SHCNE_ONEITEMEVENTS ( \
SHCNE_ATTRIBUTES | SHCNE_CREATE | SHCNE_DELETE | SHCNE_DRIVEADD | \
SHCNE_DRIVEADDGUI | SHCNE_DRIVEREMOVED | SHCNE_FREESPACE | \
SHCNE_MEDIAINSERTED | SHCNE_MEDIAREMOVED | SHCNE_MKDIR | \
SHCNE_NETSHARE | SHCNE_NETUNSHARE | SHCNE_RMDIR | \
SHCNE_SERVERDISCONNECT | SHCNE_UPDATEDIR | SHCNE_UPDATEIMAGE )
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#define SHCNE_TWOITEMEVENTS ( \
SHCNE_RENAMEFOLDER | SHCNE_RENAMEITEM | SHCNE_UPDATEITEM )
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/* for dumping events */
static const char * DumpEvent( LONG event )
{
if( event == SHCNE_ALLEVENTS )
return "SHCNE_ALLEVENTS";
#define DUMPEV(x) ,( event & SHCNE_##x )? #x " " : ""
return wine_dbg_sprintf( "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s"
DUMPEV(RENAMEITEM)
DUMPEV(CREATE)
DUMPEV(DELETE)
DUMPEV(MKDIR)
DUMPEV(RMDIR)
DUMPEV(MEDIAINSERTED)
DUMPEV(MEDIAREMOVED)
DUMPEV(DRIVEREMOVED)
DUMPEV(DRIVEADD)
DUMPEV(NETSHARE)
DUMPEV(NETUNSHARE)
DUMPEV(ATTRIBUTES)
DUMPEV(UPDATEDIR)
DUMPEV(UPDATEITEM)
DUMPEV(SERVERDISCONNECT)
DUMPEV(UPDATEIMAGE)
DUMPEV(DRIVEADDGUI)
DUMPEV(RENAMEFOLDER)
DUMPEV(FREESPACE)
DUMPEV(EXTENDED_EVENT)
DUMPEV(ASSOCCHANGED)
DUMPEV(INTERRUPT)
);
#undef DUMPEV
}
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static const char * NodeName(LPNOTIFICATIONLIST item)
{
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const char *str;
WCHAR path[MAX_PATH];
if(SHGetPathFromIDListW(item->apidl[0].pidl, path ))
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str = wine_dbg_sprintf("%s", debugstr_w(path));
else
str = wine_dbg_sprintf("<not a disk file>" );
return str;
}
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static void AddNode(LPNOTIFICATIONLIST item)
{
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TRACE("item %p\n", item );
/* link items */
item->prev = tail;
item->next = NULL;
if( tail )
tail->next = item;
else
head = item;
tail = item;
}
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static LPNOTIFICATIONLIST FindNode( HANDLE hitem )
{
LPNOTIFICATIONLIST ptr;
for( ptr = head; ptr; ptr = ptr->next )
if( ptr == (LPNOTIFICATIONLIST) hitem )
return ptr;
return NULL;
}
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static void DeleteNode(LPNOTIFICATIONLIST item)
{
UINT i;
TRACE("item=%p prev=%p next=%p\n", item, item->prev, item->next);
/* remove item from list */
if( item->prev )
item->prev->next = item->next;
else
head = item->next;
if( item->next )
item->next->prev = item->prev;
else
tail = item->prev;
/* free the item */
for (i=0; i<item->cidl; i++)
SHFree((LPITEMIDLIST)item->apidl[i].pidl);
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SHFree(item->apidl);
SHFree(item);
}
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void InitChangeNotifications(void)
{
}
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void FreeChangeNotifications(void)
{
TRACE("\n");
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EnterCriticalSection(&SHELL32_ChangenotifyCS);
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while( head )
DeleteNode( head );
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LeaveCriticalSection(&SHELL32_ChangenotifyCS);
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DeleteCriticalSection(&SHELL32_ChangenotifyCS);
}
/*************************************************************************
* SHChangeNotifyRegister [SHELL32.2]
*
*/
ULONG WINAPI
SHChangeNotifyRegister(
HWND hwnd,
int fSources,
LONG wEventMask,
UINT uMsg,
int cItems,
SHChangeNotifyEntry *lpItems)
{
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LPNOTIFICATIONLIST item;
int i;
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item = SHAlloc(sizeof(NOTIFICATIONLIST));
TRACE("(%p,0x%08x,0x%08lx,0x%08x,%d,%p) item=%p\n",
hwnd, fSources, wEventMask, uMsg, cItems, lpItems, item);
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item->next = NULL;
item->prev = NULL;
item->cidl = cItems;
item->apidl = SHAlloc(sizeof(SHChangeNotifyEntry) * cItems);
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for(i=0;i<cItems;i++)
{
item->apidl[i].pidl = ILClone(lpItems[i].pidl);
item->apidl[i].fRecursive = lpItems[i].fRecursive;
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}
item->hwnd = hwnd;
item->uMsg = uMsg;
item->wEventMask = wEventMask;
item->wSignalledEvent = 0;
item->dwFlags = fSources;
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TRACE("new node: %s\n", NodeName( item ));
EnterCriticalSection(&SHELL32_ChangenotifyCS);
AddNode(item);
LeaveCriticalSection(&SHELL32_ChangenotifyCS);
return (ULONG)item;
}
/*************************************************************************
* SHChangeNotifyDeregister [SHELL32.4]
*/
BOOL WINAPI SHChangeNotifyDeregister(ULONG hNotify)
{
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LPNOTIFICATIONLIST node;
TRACE("(0x%08lx)\n", hNotify);
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EnterCriticalSection(&SHELL32_ChangenotifyCS);
node = FindNode((HANDLE)hNotify);
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if( node )
DeleteNode(node);
LeaveCriticalSection(&SHELL32_ChangenotifyCS);
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return node?TRUE:FALSE;
}
/*************************************************************************
* SHChangeNotifyUpdateEntryList [SHELL32.5]
*/
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BOOL WINAPI SHChangeNotifyUpdateEntryList(DWORD unknown1, DWORD unknown2,
DWORD unknown3, DWORD unknown4)
{
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FIXME("(0x%08lx, 0x%08lx, 0x%08lx, 0x%08lx)\n",
unknown1, unknown2, unknown3, unknown4);
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return -1;
}
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static BOOL should_notify( LPCITEMIDLIST changed, LPCITEMIDLIST watched, BOOL sub )
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{
TRACE("%p %p %d\n", changed, watched, sub );
if ( !watched )
return FALSE;
if (ILIsEqual( watched, changed ) )
return TRUE;
if( sub && ILIsParent( watched, changed, FALSE ) )
return TRUE;
return FALSE;
}
/*************************************************************************
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* SHChangeNotify [SHELL32.@]
*/
void WINAPI SHChangeNotify(LONG wEventId, UINT uFlags, LPCVOID dwItem1, LPCVOID dwItem2)
{
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LPCITEMIDLIST Pidls[2];
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LPNOTIFICATIONLIST ptr;
UINT typeFlag = uFlags & SHCNF_TYPE;
Pidls[0] = NULL;
Pidls[1] = NULL;
TRACE("(0x%08lx,0x%08x,%p,%p):stub.\n", wEventId, uFlags, dwItem1, dwItem2);
if( ( wEventId & SHCNE_NOITEMEVENTS ) && ( dwItem1 || dwItem2 ) )
{
TRACE("dwItem1 and dwItem2 are not zero, but should be\n");
dwItem1 = 0;
dwItem2 = 0;
return;
}
else if( ( wEventId & SHCNE_ONEITEMEVENTS ) && dwItem2 )
{
TRACE("dwItem2 is not zero, but should be\n");
dwItem2 = 0;
return;
}
if( ( ( wEventId & SHCNE_NOITEMEVENTS ) &&
( wEventId & ~SHCNE_NOITEMEVENTS ) ) ||
( ( wEventId & SHCNE_ONEITEMEVENTS ) &&
( wEventId & ~SHCNE_ONEITEMEVENTS ) ) ||
( ( wEventId & SHCNE_TWOITEMEVENTS ) &&
( wEventId & ~SHCNE_TWOITEMEVENTS ) ) )
{
WARN("mutually incompatible events listed\n");
return;
}
/* convert paths in IDLists*/
switch (typeFlag)
{
case SHCNF_PATHA:
if (dwItem1) Pidls[0] = SHSimpleIDListFromPathA((LPCSTR)dwItem1);
if (dwItem2) Pidls[1] = SHSimpleIDListFromPathA((LPCSTR)dwItem2);
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break;
case SHCNF_PATHW:
if (dwItem1) Pidls[0] = SHSimpleIDListFromPathW((LPCWSTR)dwItem1);
if (dwItem2) Pidls[1] = SHSimpleIDListFromPathW((LPCWSTR)dwItem2);
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break;
case SHCNF_IDLIST:
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Pidls[0] = (LPCITEMIDLIST)dwItem1;
Pidls[1] = (LPCITEMIDLIST)dwItem2;
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break;
case SHCNF_PRINTERA:
case SHCNF_PRINTERW:
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FIXME("SHChangeNotify with (uFlags & SHCNF_PRINTER)\n");
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return;
case SHCNF_DWORD:
default:
FIXME("unknown type %08x\n",typeFlag);
return;
}
{
WCHAR path[MAX_PATH];
if( Pidls[0] && SHGetPathFromIDListW(Pidls[0], path ))
TRACE("notify %08lx on item1 = %s\n", wEventId, debugstr_w(path));
if( Pidls[1] && SHGetPathFromIDListW(Pidls[1], path ))
TRACE("notify %08lx on item2 = %s\n", wEventId, debugstr_w(path));
}
EnterCriticalSection(&SHELL32_ChangenotifyCS);
/* loop through the list */
for( ptr = head; ptr; ptr = ptr->next )
{
BOOL notify;
DWORD i;
notify = FALSE;
TRACE("trying %p\n", ptr);
for( i=0; (i<ptr->cidl) && !notify ; i++ )
{
LPCITEMIDLIST pidl = ptr->apidl[i].pidl;
BOOL subtree = ptr->apidl[i].fRecursive;
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if (wEventId & ptr->wEventMask)
{
if( !pidl ) /* all ? */
notify = TRUE;
else if( wEventId & SHCNE_NOITEMEVENTS )
notify = TRUE;
else if( wEventId & ( SHCNE_ONEITEMEVENTS | SHCNE_TWOITEMEVENTS ) )
notify = should_notify( Pidls[0], pidl, subtree );
else if( wEventId & SHCNE_TWOITEMEVENTS )
notify = should_notify( Pidls[1], pidl, subtree );
}
}
if( !notify )
continue;
ptr->pidlSignaled = ILClone(Pidls[0]);
TRACE("notifying %s, event %s(%lx) before\n", NodeName( ptr ), DumpEvent(
wEventId ),wEventId );
ptr->wSignalledEvent |= wEventId;
if (ptr->dwFlags & SHCNRF_NewDelivery)
SendMessageA(ptr->hwnd, ptr->uMsg, (WPARAM) ptr, (LPARAM) GetCurrentProcessId());
else
SendMessageA(ptr->hwnd, ptr->uMsg, (WPARAM)Pidls, wEventId);
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TRACE("notifying %s, event %s(%lx) after\n", NodeName( ptr ), DumpEvent(
wEventId ),wEventId );
}
TRACE("notify Done\n");
LeaveCriticalSection(&SHELL32_ChangenotifyCS);
/* if we allocated it, free it. The ANSI flag is also set in its Unicode sibling. */
if ((typeFlag & SHCNF_PATHA) || (typeFlag & SHCNF_PRINTERA))
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{
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if (Pidls[0]) SHFree((LPITEMIDLIST)Pidls[0]);
if (Pidls[1]) SHFree((LPITEMIDLIST)Pidls[1]);
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}
}
/*************************************************************************
* NTSHChangeNotifyRegister [SHELL32.640]
* NOTES
* Idlist is an array of structures and Count specifies how many items in the array
* (usually just one I think).
*/
DWORD WINAPI NTSHChangeNotifyRegister(
HWND hwnd,
LONG events1,
LONG events2,
DWORD msg,
int count,
SHChangeNotifyEntry *idlist)
{
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FIXME("(%p,0x%08lx,0x%08lx,0x%08lx,0x%08x,%p):semi stub.\n",
hwnd,events1,events2,msg,count,idlist);
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return (DWORD) SHChangeNotifyRegister(hwnd, events1, events2, msg, count, idlist);
}
/*************************************************************************
* SHChangeNotification_Lock [SHELL32.644]
*/
HANDLE WINAPI SHChangeNotification_Lock(
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HANDLE hChange,
DWORD dwProcessId,
LPITEMIDLIST **lppidls,
LPLONG lpwEventId)
{
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DWORD i;
LPNOTIFICATIONLIST node;
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LPCITEMIDLIST *idlist;
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TRACE("%p %08lx %p %p\n", hChange, dwProcessId, lppidls, lpwEventId);
/* EnterCriticalSection(&SHELL32_ChangenotifyCS); */
node = FindNode( hChange );
if( node )
{
idlist = SHAlloc( sizeof(LPCITEMIDLIST *) * node->cidl );
for(i=0; i<node->cidl; i++)
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idlist[i] = (LPCITEMIDLIST)node->pidlSignaled;
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*lpwEventId = node->wSignalledEvent;
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*lppidls = (LPITEMIDLIST*)idlist;
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node->wSignalledEvent = 0;
}
else
ERR("Couldn't find %p\n", hChange );
/* LeaveCriticalSection(&SHELL32_ChangenotifyCS); */
return (HANDLE) node;
}
/*************************************************************************
* SHChangeNotification_Unlock [SHELL32.645]
*/
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BOOL WINAPI SHChangeNotification_Unlock ( HANDLE hLock)
{
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TRACE("\n");
return 1;
}
/*************************************************************************
* NTSHChangeNotifyDeregister [SHELL32.641]
*/
DWORD WINAPI NTSHChangeNotifyDeregister(ULONG x1)
{
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FIXME("(0x%08lx):semi stub.\n",x1);
return SHChangeNotifyDeregister( x1 );
}