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