dlls/shell32/shellitem.c

   1 /*
   2  * IShellItem implementation
   3  *
   4  * Copyright 2008 Vincent Povirk for CodeWeavers
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <stdio.h>
  25 #include <stdarg.h>
  26
  27 #define COBJMACROS
  28 #define NONAMELESSUNION
  29 #define NONAMELESSSTRUCT
  30
  31 #include "windef.h"
  32 #include "winbase.h"
  33 #include "wine/debug.h"
  34
  35 #include "pidl.h"
  36 #include "shell32_main.h"
  37 #include "debughlp.h"
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(shell);
  40
  41 typedef struct _ShellItem {
  42     const IShellItemVtbl    *lpIShellItemVtbl;
  43     LONG                    ref;
  44     LPITEMIDLIST            pidl;
  45     const IPersistIDListVtbl *lpIPersistIDListVtbl;
  46 } ShellItem;
  47
  48
  49 static inline ShellItem *impl_from_IPersistIDList( IPersistIDList *iface )
  50 {
  51     return (ShellItem*)((char*)iface - FIELD_OFFSET(ShellItem, lpIPersistIDListVtbl));
  52 }
  53
  54
  55 static HRESULT WINAPI ShellItem_QueryInterface(IShellItem *iface, REFIID riid,
  56     void **ppv)
  57 {
  58     ShellItem *This = (ShellItem*)iface;
  59
  60     TRACE("(%p,%p,%p)\n", iface, riid, ppv);
  61
  62     if (!ppv) return E_INVALIDARG;
  63
  64     if (IsEqualIID(&IID_IUnknown, riid) || IsEqualIID(&IID_IShellItem, riid))
  65     {
  66         *ppv = This;
  67     }
  68     else if (IsEqualIID(&IID_IPersist, riid) || IsEqualIID(&IID_IPersistIDList, riid))
  69     {
  70         *ppv = &(This->lpIPersistIDListVtbl);
  71     }
  72     else {
  73         FIXME("not implemented for %s\n", shdebugstr_guid(riid));
  74         *ppv = NULL;
  75         return E_NOINTERFACE;
  76     }
  77
  78     IUnknown_AddRef((IUnknown*)*ppv);
  79     return S_OK;
  80 }
  81
  82 static ULONG WINAPI ShellItem_AddRef(IShellItem *iface)
  83 {
  84     ShellItem *This = (ShellItem*)iface;
  85     ULONG ref = InterlockedIncrement(&This->ref);
  86
  87     TRACE("(%p), new refcount=%i\n", iface, ref);
  88
  89     return ref;
  90 }
  91
  92 static ULONG WINAPI ShellItem_Release(IShellItem *iface)
  93 {
  94     ShellItem *This = (ShellItem*)iface;
  95     ULONG ref = InterlockedDecrement(&This->ref);
  96
  97     TRACE("(%p), new refcount=%i\n", iface, ref);
  98
  99     if (ref == 0)
 100     {
 101         ILFree(This->pidl);
 102         HeapFree(GetProcessHeap(), 0, This);
 103     }
 104
 105     return ref;
 106 }
 107
 108 static HRESULT ShellItem_get_parent_pidl(ShellItem *This, LPITEMIDLIST *parent_pidl)
 109 {
 110     *parent_pidl = ILClone(This->pidl);
 111     if (*parent_pidl)
 112     {
 113         if (ILRemoveLastID(*parent_pidl))
 114             return S_OK;
 115         else
 116         {
 117             ILFree(*parent_pidl);
 118             *parent_pidl = NULL;
 119             return E_INVALIDARG;
 120         }
 121     }
 122     else
 123     {
 124         *parent_pidl = NULL;
 125         return E_OUTOFMEMORY;
 126     }
 127 }
 128
 129 static HRESULT ShellItem_get_parent_shellfolder(ShellItem *This, IShellFolder **ppsf)
 130 {
 131     LPITEMIDLIST parent_pidl;
 132     IShellFolder *desktop;
 133     HRESULT ret;
 134
 135     ret = ShellItem_get_parent_pidl(This, &parent_pidl);
 136     if (SUCCEEDED(ret))
 137     {
 138         ret = SHGetDesktopFolder(&desktop);
 139         if (SUCCEEDED(ret))
 140         {
 141             ret = IShellFolder_BindToObject(desktop, parent_pidl, NULL, &IID_IShellFolder, (void**)ppsf);
 142             IShellFolder_Release(desktop);
 143         }
 144         ILFree(parent_pidl);
 145     }
 146
 147     return ret;
 148 }
 149
 150 static HRESULT WINAPI ShellItem_BindToHandler(IShellItem *iface, IBindCtx *pbc,
 151     REFGUID rbhid, REFIID riid, void **ppvOut)
 152 {
 153     FIXME("(%p,%p,%s,%p,%p)\n", iface, pbc, shdebugstr_guid(rbhid), riid, ppvOut);
 154
 155     *ppvOut = NULL;
 156
 157     return E_NOTIMPL;
 158 }
 159
 160 static HRESULT WINAPI ShellItem_GetParent(IShellItem *iface, IShellItem **ppsi)
 161 {
 162     ShellItem *This = (ShellItem*)iface;
 163     LPITEMIDLIST parent_pidl;
 164     HRESULT ret;
 165
 166     TRACE("(%p,%p)\n", iface, ppsi);
 167
 168     ret = ShellItem_get_parent_pidl(This, &parent_pidl);
 169     if (SUCCEEDED(ret))
 170     {
 171         ret = SHCreateShellItem(NULL, NULL, parent_pidl, ppsi);
 172         ILFree(parent_pidl);
 173     }
 174
 175     return ret;
 176 }
 177
 178 static HRESULT WINAPI ShellItem_GetDisplayName(IShellItem *iface, SIGDN sigdnName,
 179     LPWSTR *ppszName)
 180 {
 181     FIXME("(%p,%x,%p)\n", iface, sigdnName, ppszName);
 182
 183     *ppszName = NULL;
 184
 185     return E_NOTIMPL;
 186 }
 187
 188 static HRESULT WINAPI ShellItem_GetAttributes(IShellItem *iface, SFGAOF sfgaoMask,
 189     SFGAOF *psfgaoAttribs)
 190 {
 191     ShellItem *This = (ShellItem*)iface;
 192     IShellFolder *parent_folder;
 193     LPITEMIDLIST child_pidl;
 194     HRESULT ret;
 195
 196     TRACE("(%p,%x,%p)\n", iface, sfgaoMask, psfgaoAttribs);
 197
 198     ret = ShellItem_get_parent_shellfolder(This, &parent_folder);
 199     if (SUCCEEDED(ret))
 200     {
 201         child_pidl = ILFindLastID(This->pidl);
 202         *psfgaoAttribs = sfgaoMask;
 203         ret = IShellFolder_GetAttributesOf(parent_folder, 1, (LPCITEMIDLIST*)&child_pidl, psfgaoAttribs);
 204         IShellFolder_Release(parent_folder);
 205     }
 206
 207     return ret;
 208 }
 209
 210 static HRESULT WINAPI ShellItem_Compare(IShellItem *iface, IShellItem *oth,
 211     SICHINTF hint, int *piOrder)
 212 {
 213     FIXME("(%p,%p,%x,%p)\n", iface, oth, hint, piOrder);
 214
 215     return E_NOTIMPL;
 216 }
 217
 218 static const IShellItemVtbl ShellItem_Vtbl = {
 219     ShellItem_QueryInterface,
 220     ShellItem_AddRef,
 221     ShellItem_Release,
 222     ShellItem_BindToHandler,
 223     ShellItem_GetParent,
 224     ShellItem_GetDisplayName,
 225     ShellItem_GetAttributes,
 226     ShellItem_Compare
 227 };
 228
 229
 230 static HRESULT ShellItem_GetClassID(ShellItem* This, CLSID *pClassID)
 231 {
 232     TRACE("(%p,%p)\n", This, pClassID);
 233
 234     *pClassID = CLSID_ShellItem;
 235     return S_OK;
 236 }
 237
 238
 239 static HRESULT WINAPI ShellItem_IPersistIDList_QueryInterface(IPersistIDList *iface,
 240     REFIID riid, void **ppv)
 241 {
 242     ShellItem *This = impl_from_IPersistIDList(iface);
 243     return ShellItem_QueryInterface((IShellItem*)This, riid, ppv);
 244 }
 245
 246 static ULONG WINAPI ShellItem_IPersistIDList_AddRef(IPersistIDList *iface)
 247 {
 248     ShellItem *This = impl_from_IPersistIDList(iface);
 249     return ShellItem_AddRef((IShellItem*)This);
 250 }
 251
 252 static ULONG WINAPI ShellItem_IPersistIDList_Release(IPersistIDList *iface)
 253 {
 254     ShellItem *This = impl_from_IPersistIDList(iface);
 255     return ShellItem_Release((IShellItem*)This);
 256 }
 257
 258 static HRESULT WINAPI ShellItem_IPersistIDList_GetClassID(IPersistIDList* iface,
 259     CLSID *pClassID)
 260 {
 261     ShellItem *This = impl_from_IPersistIDList(iface);
 262
 263     return ShellItem_GetClassID(This, pClassID);
 264 }
 265
 266 static HRESULT WINAPI ShellItem_IPersistIDList_SetIDList(IPersistIDList* iface,
 267     LPCITEMIDLIST pidl)
 268 {
 269     ShellItem *This = impl_from_IPersistIDList(iface);
 270     LPITEMIDLIST new_pidl;
 271
 272     TRACE("(%p,%p)\n", This, pidl);
 273
 274     new_pidl = ILClone(pidl);
 275
 276     if (new_pidl)
 277     {
 278         ILFree(This->pidl);
 279         This->pidl = new_pidl;
 280         return S_OK;
 281     }
 282     else
 283         return E_OUTOFMEMORY;
 284 }
 285
 286 static HRESULT WINAPI ShellItem_IPersistIDList_GetIDList(IPersistIDList* iface,
 287     LPITEMIDLIST *ppidl)
 288 {
 289     ShellItem *This = impl_from_IPersistIDList(iface);
 290
 291     TRACE("(%p,%p)\n", This, ppidl);
 292
 293     *ppidl = ILClone(This->pidl);
 294     if (*ppidl)
 295         return S_OK;
 296     else
 297         return E_OUTOFMEMORY;
 298 }
 299
 300 static const IPersistIDListVtbl ShellItem_IPersistIDList_Vtbl = {
 301     ShellItem_IPersistIDList_QueryInterface,
 302     ShellItem_IPersistIDList_AddRef,
 303     ShellItem_IPersistIDList_Release,
 304     ShellItem_IPersistIDList_GetClassID,
 305     ShellItem_IPersistIDList_SetIDList,
 306     ShellItem_IPersistIDList_GetIDList
 307 };
 308
 309
 310 HRESULT WINAPI IShellItem_Constructor(IUnknown *pUnkOuter, REFIID riid, void **ppv)
 311 {
 312     ShellItem *This;
 313     HRESULT ret;
 314
 315     TRACE("(%p,%s)\n",pUnkOuter, debugstr_guid(riid));
 316
 317     *ppv = NULL;
 318
 319     if (pUnkOuter) return CLASS_E_NOAGGREGATION;
 320
 321     This = HeapAlloc(GetProcessHeap(), 0, sizeof(ShellItem));
 322     This->lpIShellItemVtbl = &ShellItem_Vtbl;
 323     This->ref = 1;
 324     This->pidl = NULL;
 325     This->lpIPersistIDListVtbl = &ShellItem_IPersistIDList_Vtbl;
 326
 327     ret = ShellItem_QueryInterface((IShellItem*)This, riid, ppv);
 328     ShellItem_Release((IShellItem*)This);
 329
 330     return ret;
 331 }
 332
 333 HRESULT WINAPI SHCreateShellItem(LPCITEMIDLIST pidlParent,
 334     IShellFolder *psfParent, LPCITEMIDLIST pidl, IShellItem **ppsi)
 335 {
 336     ShellItem *This;
 337     LPITEMIDLIST new_pidl;
 338     HRESULT ret;
 339
 340     TRACE("(%p,%p,%p,%p)\n", pidlParent, psfParent, pidl, ppsi);
 341
 342     if (!pidl)
 343     {
 344         return E_INVALIDARG;
 345     }
 346     else if (pidlParent || psfParent)
 347     {
 348         LPITEMIDLIST temp_parent=NULL;
 349         if (!pidlParent)
 350         {
 351             IPersistFolder2* ppf2Parent;
 352
 353             if (FAILED(IPersistFolder2_QueryInterface(psfParent, &IID_IPersistFolder2, (void**)&ppf2Parent)))
 354             {
 355                 FIXME("couldn't get IPersistFolder2 interface of parent\n");
 356                 return E_NOINTERFACE;
 357             }
 358
 359             if (FAILED(IPersistFolder2_GetCurFolder(ppf2Parent, &temp_parent)))
 360             {
 361                 FIXME("couldn't get parent PIDL\n");
 362                 IPersistFolder2_Release(ppf2Parent);
 363                 return E_NOINTERFACE;
 364             }
 365
 366             pidlParent = temp_parent;
 367             IPersistFolder2_Release(ppf2Parent);
 368         }
 369
 370         new_pidl = ILCombine(pidlParent, pidl);
 371         ILFree(temp_parent);
 372
 373         if (!new_pidl)
 374             return E_OUTOFMEMORY;
 375     }
 376     else
 377     {
 378         new_pidl = ILClone(pidl);
 379         if (!new_pidl)
 380             return E_OUTOFMEMORY;
 381     }
 382
 383     ret = IShellItem_Constructor(NULL, &IID_IShellItem, (void**)&This);
 384     if (This)
 385     {
 386         *ppsi = (IShellItem*)This;
 387         This->pidl = new_pidl;
 388     }
 389     else
 390     {
 391         *ppsi = NULL;
 392         ILFree(new_pidl);
 393     }
 394     return ret;
 395 }