dlls/shell32/changenotify.c

   1 /*
   2  *      shell change notification
   3  *
   4  *      Juergen Schmied <juergen.schmied@debitel.de>
   5  *
   6  */
   7
   8 #include <string.h>
   9
  10 #include "debugtools.h"
  11 #include "pidl.h"
  12 #include "shell32_main.h"
  13 #include "winversion.h"
  14 #include "wine/undocshell.h"
  15
  16 DEFAULT_DEBUG_CHANNEL(shell);
  17
  18 static CRITICAL_SECTION SHELL32_ChangenotifyCS = CRITICAL_SECTION_INIT;
  19
  20 /* internal list of notification clients (internal) */
  21 typedef struct _NOTIFICATIONLIST
  22 {
  23         struct _NOTIFICATIONLIST *next;
  24         struct _NOTIFICATIONLIST *prev;
  25         HWND hwnd;              /* window to notify */
  26         DWORD uMsg;             /* message to send */
  27         LPNOTIFYREGISTER apidl; /* array of entrys to watch*/
  28         UINT cidl;              /* number of pidls in array */
  29         LONG wEventMask;        /* subscribed events */
  30         DWORD dwFlags;          /* client flags */
  31 } NOTIFICATIONLIST, *LPNOTIFICATIONLIST;
  32
  33 static NOTIFICATIONLIST head;
  34 static NOTIFICATIONLIST tail;
  35
  36 void InitChangeNotifications()
  37 {
  38         TRACE("head=%p tail=%p\n", &head, &tail);
  39         head.next = &tail;
  40         tail.prev = &head;
  41 }
  42
  43 void FreeChangeNotifications()
  44 {
  45         LPNOTIFICATIONLIST ptr, item;
  46
  47         TRACE("\n");
  48
  49         EnterCriticalSection(&SHELL32_ChangenotifyCS);
  50         ptr = head.next;
  51
  52         while(ptr != &tail)
  53         {
  54           int i;
  55           item = ptr;
  56           ptr = ptr->next;
  57
  58           TRACE("item=%p\n", item);
  59
  60           /* free the item */
  61           for (i=0; i<item->cidl;i++) SHFree(item->apidl[i].pidlPath);
  62           SHFree(item->apidl);
  63           SHFree(item);
  64         }
  65         head.next = NULL;
  66         tail.prev = NULL;
  67
  68         LeaveCriticalSection(&SHELL32_ChangenotifyCS);
  69
  70         DeleteCriticalSection(&SHELL32_ChangenotifyCS);
  71 }
  72
  73 static BOOL AddNode(LPNOTIFICATIONLIST item)
  74 {
  75         LPNOTIFICATIONLIST last;
  76
  77         EnterCriticalSection(&SHELL32_ChangenotifyCS);
  78
  79         /* get last entry */
  80         last = tail.prev;
  81
  82         /* link items */
  83         last->next = item;
  84         item->prev = last;
  85         item->next = &tail;
  86         tail.prev = item;
  87         TRACE("item=%p prev=%p next=%p\n", item, item->prev, item->next);
  88
  89         LeaveCriticalSection(&SHELL32_ChangenotifyCS);
  90
  91         return TRUE;
  92 }
  93
  94 static BOOL DeleteNode(LPNOTIFICATIONLIST item)
  95 {
  96         LPNOTIFICATIONLIST ptr;
  97         int ret = FALSE;
  98
  99         TRACE("item=%p\n", item);
 100
 101         EnterCriticalSection(&SHELL32_ChangenotifyCS);
 102
 103         ptr = head.next;
 104         while((ptr != &tail) && (ret == FALSE))
 105         {
 106           TRACE("ptr=%p\n", ptr);
 107
 108           if (ptr == item)
 109           {
 110             int i;
 111
 112             TRACE("item=%p prev=%p next=%p\n", item, item->prev, item->next);
 113
 114             /* remove item from list */
 115             item->prev->next = item->next;
 116             item->next->prev = item->prev;
 117
 118             /* free the item */
 119             for (i=0; i<item->cidl;i++) SHFree(item->apidl[i].pidlPath);
 120             SHFree(item->apidl);
 121             SHFree(item);
 122             ret = TRUE;
 123           }
 124           ptr = ptr->next;
 125         }
 126
 127         LeaveCriticalSection(&SHELL32_ChangenotifyCS);
 128         return ret;
 129
 130 }
 131
 132 /*************************************************************************
 133  * SHChangeNotifyRegister                       [SHELL32.2]
 134  *
 135  */
 136 HANDLE WINAPI
 137 SHChangeNotifyRegister(
 138     HWND hwnd,
 139     LONG dwFlags,
 140     LONG wEventMask,
 141     DWORD uMsg,
 142     int cItems,
 143     LPCNOTIFYREGISTER lpItems)
 144 {
 145         LPNOTIFICATIONLIST item;
 146         int i;
 147
 148         item = SHAlloc(sizeof(NOTIFICATIONLIST));
 149
 150         TRACE("(0x%04x,0x%08lx,0x%08lx,0x%08lx,0x%08x,%p) item=%p\n",
 151                 hwnd,dwFlags,wEventMask,uMsg,cItems,lpItems,item);
 152
 153         item->next = NULL;
 154         item->prev = NULL;
 155         item->cidl = cItems;
 156         item->apidl = SHAlloc(sizeof(NOTIFYREGISTER) * cItems);
 157         for(i=0;i<cItems;i++)
 158         {
 159           item->apidl[i].pidlPath = ILClone(lpItems[i].pidlPath);
 160           item->apidl[i].bWatchSubtree = lpItems[i].bWatchSubtree;
 161         }
 162         item->hwnd = hwnd;
 163         item->uMsg = uMsg;
 164         item->wEventMask = wEventMask;
 165         item->dwFlags = dwFlags;
 166         AddNode(item);
 167         return (HANDLE)item;
 168 }
 169
 170 /*************************************************************************
 171  * SHChangeNotifyDeregister                     [SHELL32.4]
 172  */
 173 BOOL WINAPI
 174 SHChangeNotifyDeregister(
 175         HANDLE hNotify)
 176 {
 177         TRACE("(0x%08x)\n",hNotify);
 178
 179         return DeleteNode((LPNOTIFICATIONLIST)hNotify);;
 180 }
 181
 182 /*************************************************************************
 183  * SHChangeNotify                               [SHELL32.239]
 184  */
 185 void WINAPI SHChangeNotifyW (LONG wEventId, UINT  uFlags, LPCVOID dwItem1, LPCVOID dwItem2)
 186 {
 187         LPITEMIDLIST pidl1=(LPITEMIDLIST)dwItem1, pidl2=(LPITEMIDLIST)dwItem2;
 188         LPNOTIFICATIONLIST ptr;
 189
 190         TRACE("(0x%08lx,0x%08x,%p,%p):stub.\n", wEventId,uFlags,dwItem1,dwItem2);
 191
 192         /* convert paths in IDLists*/
 193         if(uFlags & SHCNF_PATHA)
 194         {
 195           DWORD dummy;
 196           if (dwItem1) SHILCreateFromPathA((LPCSTR)dwItem1, &pidl1, &dummy);
 197           if (dwItem2) SHILCreateFromPathA((LPCSTR)dwItem2, &pidl2, &dummy);
 198         }
 199
 200         EnterCriticalSection(&SHELL32_ChangenotifyCS);
 201
 202         /* loop through the list */
 203         ptr = head.next;
 204         while(ptr != &tail)
 205         {
 206           TRACE("trying %p\n", ptr);
 207
 208           if(wEventId & ptr->wEventMask)
 209           {
 210             TRACE("notifying\n");
 211             SendMessageA(ptr->hwnd, ptr->uMsg, (WPARAM)pidl1, (LPARAM)pidl2);
 212           }
 213           ptr = ptr->next;
 214         }
 215
 216         LeaveCriticalSection(&SHELL32_ChangenotifyCS);
 217
 218         if(uFlags & SHCNF_PATHA)
 219         {
 220             if (pidl1) SHFree(pidl1);
 221             if (pidl2) SHFree(pidl2);
 222         }
 223 }
 224
 225 /*************************************************************************
 226  * SHChangeNotify                               [SHELL32.239]
 227  */
 228 void WINAPI SHChangeNotifyA (LONG wEventId, UINT  uFlags, LPCVOID dwItem1, LPCVOID dwItem2)
 229 {
 230         LPITEMIDLIST Pidls[2];
 231         LPNOTIFICATIONLIST ptr;
 232
 233         Pidls[0] = (LPITEMIDLIST)dwItem1;
 234         Pidls[1] = (LPITEMIDLIST)dwItem2;
 235
 236         TRACE("(0x%08lx,0x%08x,%p,%p):stub.\n", wEventId,uFlags,dwItem1,dwItem2);
 237
 238         /* convert paths in IDLists*/
 239         if(uFlags & SHCNF_PATHA)
 240         {
 241           DWORD dummy;
 242           if (Pidls[0]) SHILCreateFromPathA((LPCSTR)dwItem1, &Pidls[0], &dummy);
 243           if (Pidls[1]) SHILCreateFromPathA((LPCSTR)dwItem2, &Pidls[1], &dummy);
 244         }
 245
 246         EnterCriticalSection(&SHELL32_ChangenotifyCS);
 247
 248         /* loop through the list */
 249         ptr = head.next;
 250         while(ptr != &tail)
 251         {
 252           TRACE("trying %p\n", ptr);
 253
 254           if(wEventId & ptr->wEventMask)
 255           {
 256             TRACE("notifying\n");
 257             SendMessageA(ptr->hwnd, ptr->uMsg, (WPARAM)&Pidls, (LPARAM)wEventId);
 258           }
 259           ptr = ptr->next;
 260         }
 261
 262         LeaveCriticalSection(&SHELL32_ChangenotifyCS);
 263
 264         /* if we allocated it, free it */
 265         if(uFlags & SHCNF_PATHA)
 266         {
 267             if (Pidls[0]) SHFree(Pidls[0]);
 268             if (Pidls[1]) SHFree(Pidls[1]);
 269         }
 270 }
 271
 272 /*************************************************************************
 273  * SHChangeNotifyAW                             [SHELL32.239]
 274  */
 275 void WINAPI SHChangeNotifyAW (LONG wEventId, UINT  uFlags, LPCVOID dwItem1, LPCVOID dwItem2)
 276 {
 277         if(VERSION_OsIsUnicode())
 278           SHChangeNotifyW (wEventId, uFlags, dwItem1, dwItem2);
 279         else
 280           SHChangeNotifyA (wEventId, uFlags, dwItem1, dwItem2);
 281 }
 282
 283 /*************************************************************************
 284  * NTSHChangeNotifyRegister                     [SHELL32.640]
 285  * NOTES
 286  *   Idlist is an array of structures and Count specifies how many items in the array
 287  *   (usually just one I think).
 288  */
 289 DWORD WINAPI NTSHChangeNotifyRegister(
 290     HWND hwnd,
 291     LONG events1,
 292     LONG events2,
 293     DWORD msg,
 294     int count,
 295     LPNOTIFYREGISTER idlist)
 296 {
 297         FIXME("(0x%04x,0x%08lx,0x%08lx,0x%08lx,0x%08x,%p):stub.\n",
 298                 hwnd,events1,events2,msg,count,idlist);
 299         return 0;
 300 }
 301
 302 /*************************************************************************
 303  * SHChangeNotification_Lock                    [SHELL32.644]
 304  */
 305 HANDLE WINAPI SHChangeNotification_Lock(
 306         HANDLE hMemoryMap,
 307         DWORD dwProcessId,
 308         LPCITEMIDLIST **lppidls,
 309         LPLONG lpwEventId)
 310 {
 311         FIXME("\n");
 312         return 0;
 313 }
 314
 315 /*************************************************************************
 316  * SHChangeNotification_Unlock                  [SHELL32.645]
 317  */
 318 BOOL WINAPI SHChangeNotification_Unlock (
 319         HANDLE hLock)
 320 {
 321         FIXME("\n");
 322         return 0;
 323 }
 324
 325 /*************************************************************************
 326  * NTSHChangeNotifyDeregister                   [SHELL32.641]
 327  */
 328 DWORD WINAPI NTSHChangeNotifyDeregister(LONG x1)
 329 {
 330         FIXME("(0x%08lx):stub.\n",x1);
 331         return 0;
 332 }
 333