subsys/system/explorer/shell/shellfs.cpp

   1 /*
   2  * Copyright 2003 Martin Fuchs
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19
  20  //
  21  // Explorer clone
  22  //
  23  // shellfs.cpp
  24  //
  25  // Martin Fuchs, 23.07.2003
  26  //
  27
  28
  29 #include "../utility/utility.h"
  30 #include "../utility/shellclasses.h"
  31
  32 #include "../globals.h"
  33
  34 #include "entries.h"
  35 #include "shellfs.h"
  36
  37
  38 bool ShellDirectory::fill_w32fdata_shell(LPCITEMIDLIST pidl, SFGAOF attribs, WIN32_FIND_DATA* pw32fdata, BY_HANDLE_FILE_INFORMATION* pbhfi)
  39 {
  40         bool bhfi_valid = false;
  41
  42         if (!( (attribs & SFGAO_FILESYSTEM) && SUCCEEDED(
  43                                 SHGetDataFromIDList(_folder, pidl, SHGDFIL_FINDDATA, pw32fdata, sizeof(WIN32_FIND_DATA))) )) {
  44                 WIN32_FILE_ATTRIBUTE_DATA fad;
  45                 IDataObject* pDataObj;
  46
  47                 STGMEDIUM medium = {0, {0}, 0};
  48                 FORMATETC fmt = {g_Globals._cfStrFName, 0, DVASPECT_CONTENT, -1, TYMED_HGLOBAL};
  49
  50                 HRESULT hr = _folder->GetUIObjectOf(0, 1, &pidl, IID_IDataObject, 0, (LPVOID*)&pDataObj);
  51
  52                 if (SUCCEEDED(hr)) {
  53                         hr = pDataObj->GetData(&fmt, &medium);
  54
  55                         pDataObj->Release();
  56
  57                         if (SUCCEEDED(hr)) {
  58                                 LPCTSTR path = (LPCTSTR)GlobalLock(medium.UNION_MEMBER(hGlobal));
  59                                 UINT sem_org = SetErrorMode(SEM_FAILCRITICALERRORS);
  60
  61                                 if (GetFileAttributesEx(path, GetFileExInfoStandard, &fad)) {
  62                                         pw32fdata->dwFileAttributes = fad.dwFileAttributes;
  63                                         pw32fdata->ftCreationTime = fad.ftCreationTime;
  64                                         pw32fdata->ftLastAccessTime = fad.ftLastAccessTime;
  65                                         pw32fdata->ftLastWriteTime = fad.ftLastWriteTime;
  66
  67                                         if (!(fad.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)) {
  68                                                 pw32fdata->nFileSizeLow = fad.nFileSizeLow;
  69                                                 pw32fdata->nFileSizeHigh = fad.nFileSizeHigh;
  70                                         }
  71                                 }
  72
  73                                 HANDLE hFile = CreateFile(path, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
  74                                                                                         0, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0);
  75
  76                                 if (hFile != INVALID_HANDLE_VALUE) {
  77                                         if (GetFileInformationByHandle(hFile, pbhfi))
  78                                                 bhfi_valid = true;
  79
  80                                         CloseHandle(hFile);
  81                                 }
  82
  83                                 SetErrorMode(sem_org);
  84
  85                                 GlobalUnlock(medium.UNION_MEMBER(hGlobal));
  86                                 GlobalFree(medium.UNION_MEMBER(hGlobal));
  87                         }
  88                 }
  89         }
  90
  91         if (!(attribs & SFGAO_FILESYSTEM))      // Archiv files should not be displayed as folders in explorer view.
  92                 if (attribs & (SFGAO_FOLDER|SFGAO_HASSUBFOLDER))
  93                         pw32fdata->dwFileAttributes |= FILE_ATTRIBUTE_DIRECTORY;
  94
  95         if (attribs & SFGAO_READONLY)
  96                 pw32fdata->dwFileAttributes |= FILE_ATTRIBUTE_READONLY;
  97
  98         if (attribs & SFGAO_COMPRESSED)
  99                 pw32fdata->dwFileAttributes |= FILE_ATTRIBUTE_COMPRESSED;
 100
 101         return bhfi_valid;
 102 }
 103
 104
 105 LPITEMIDLIST ShellEntry::create_absolute_pidl(HWND hwnd)
 106 {
 107         if (_up/* && _up->_etype==ET_SHELL*/) {
 108                 ShellDirectory* dir = static_cast<ShellDirectory*>(_up);
 109
 110                 return _pidl.create_absolute_pidl(dir->_pidl, hwnd);
 111         }
 112
 113         return &*_pidl;
 114 }
 115
 116
 117  // get full path of a shell entry
 118 void ShellEntry::get_path(PTSTR path) const
 119 {
 120         path[0] = TEXT('\0');
 121
 122         HRESULT hr = path_from_pidl(get_parent_folder(), &*_pidl, path, MAX_PATH);
 123 }
 124
 125
 126  // get full path of a shell folder
 127 void ShellDirectory::get_path(PTSTR path) const
 128 {
 129         path[0] = TEXT('\0');
 130
 131         SFGAOF attribs = 0;
 132         HRESULT hr = S_OK;
 133
 134         if (!_folder.empty())
 135                 hr = const_cast<ShellFolder&>(_folder)->GetAttributesOf(1, (LPCITEMIDLIST*)&_pidl, &attribs);
 136
 137         if (SUCCEEDED(hr) && (attribs&SFGAO_FILESYSTEM))
 138                 hr = path_from_pidl(get_parent_folder(), &*_pidl, path, MAX_PATH);
 139 }
 140
 141
 142 BOOL ShellEntry::launch_entry(HWND hwnd, UINT nCmdShow)
 143 {
 144         BOOL ret = TRUE;
 145
 146         SHELLEXECUTEINFO shexinfo;
 147
 148         shexinfo.cbSize = sizeof(SHELLEXECUTEINFO);
 149         shexinfo.fMask = SEE_MASK_INVOKEIDLIST; // SEE_MASK_IDLIST is also possible.
 150         shexinfo.hwnd = hwnd;
 151         shexinfo.lpVerb = NULL;
 152         shexinfo.lpFile = NULL;
 153         shexinfo.lpParameters = NULL;
 154         shexinfo.lpDirectory = NULL;
 155         shexinfo.nShow = nCmdShow;
 156         shexinfo.lpIDList = create_absolute_pidl(hwnd);
 157
 158         if (!ShellExecuteEx(&shexinfo)) {
 159                 display_error(hwnd, GetLastError());
 160                 ret = FALSE;
 161         }
 162
 163         if (shexinfo.lpIDList != &*_pidl)
 164                 ShellMalloc()->Free(shexinfo.lpIDList);
 165
 166         return ret;
 167 }
 168
 169
 170 static HICON extract_icon(IShellFolder* folder, LPCITEMIDLIST pidl)
 171 {
 172         IExtractIcon* pExtract;
 173
 174         if (SUCCEEDED(folder->GetUIObjectOf(0, 1, (LPCITEMIDLIST*)&pidl, IID_IExtractIcon, 0, (LPVOID*)&pExtract))) {
 175                 TCHAR path[_MAX_PATH];
 176                 unsigned flags;
 177                 HICON hIcon;
 178                 int idx;
 179
 180                 if (SUCCEEDED(pExtract->GetIconLocation(GIL_FORSHELL, path, _MAX_PATH, &idx, &flags))) {
 181                         if (!(flags & GIL_NOTFILENAME)) {
 182                                 if (idx == -1)
 183                                         idx = 0;        // special case for some control panel applications
 184
 185                                 if ((int)ExtractIconEx(path, idx, 0, &hIcon, 1) > 0)
 186                                         flags &= ~GIL_DONTCACHE;
 187                         } else {
 188                                 HICON hIconLarge = 0;
 189
 190                                 HRESULT hr = pExtract->Extract(path, idx, &hIconLarge, &hIcon, MAKELONG(0/*GetSystemMetrics(SM_CXICON)*/,GetSystemMetrics(SM_CXSMICON)));
 191
 192                                 if (SUCCEEDED(hr))
 193                                         DestroyIcon(hIconLarge);
 194                         }
 195
 196                         return hIcon;
 197                 }
 198         }
 199
 200         return 0;
 201 }
 202
 203
 204 void ShellDirectory::read_directory()
 205 {
 206         int level = _level + 1;
 207
 208         Entry* first_entry = NULL;
 209         Entry* last = NULL;
 210
 211         /*if (_folder.empty())
 212                 return;*/
 213
 214         ShellItemEnumerator enumerator(_folder, SHCONTF_FOLDERS|SHCONTF_NONFOLDERS|SHCONTF_INCLUDEHIDDEN|SHCONTF_SHAREABLE|SHCONTF_STORAGE);
 215
 216         HRESULT hr_next = S_OK;
 217
 218         do {
 219 #define FETCH_ITEM_COUNT        32
 220                 LPITEMIDLIST pidls[FETCH_ITEM_COUNT];
 221                 ULONG cnt = 0;
 222                 ULONG n;
 223
 224                 memset(pidls, 0, sizeof(pidls));
 225
 226                 hr_next = enumerator->Next(FETCH_ITEM_COUNT, pidls, &cnt);
 227
 228                 /* don't break yet now: Registry Explorer Plugin returns E_FAIL!
 229                 if (!SUCCEEDED(hr_next))
 230                         break; */
 231
 232                 if (hr_next == S_FALSE)
 233                         break;
 234
 235                 for(n=0; n<cnt; ++n) {
 236                         WIN32_FIND_DATA w32fd;
 237                         BY_HANDLE_FILE_INFORMATION bhfi;
 238                         bool bhfi_valid = false;
 239
 240                         memset(&w32fd, 0, sizeof(WIN32_FIND_DATA));
 241
 242                         SFGAOF attribs = ~SFGAO_FILESYSTEM; //SFGAO_HASSUBFOLDER|SFGAO_FOLDER; SFGAO_FILESYSTEM sorgt dafür, daß "My Documents" anstatt von "Martin's Documents" angezeigt wird
 243                         HRESULT hr = _folder->GetAttributesOf(1, (LPCITEMIDLIST*)&pidls[n], &attribs);
 244
 245                         if (SUCCEEDED(hr)) {
 246                                 if (attribs != ~SFGAO_FILESYSTEM)
 247                                         bhfi_valid = fill_w32fdata_shell(pidls[n], attribs, &w32fd, &bhfi);
 248                                 else
 249                                         attribs = 0;
 250                         } else
 251                                 attribs = 0;
 252
 253                         Entry* entry;
 254
 255                         if (w32fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
 256                                 entry = new ShellDirectory(this, pidls[n], _hwnd);
 257                         else
 258                                 entry = new ShellEntry(this, pidls[n]);
 259
 260                         if (!first_entry)
 261                                 first_entry = entry;
 262
 263                         if (last)
 264                                 last->_next = entry;
 265
 266                         memcpy(&entry->_data, &w32fd, sizeof(WIN32_FIND_DATA));
 267
 268                         if (bhfi_valid)
 269                                 memcpy(&entry->_bhfi, &bhfi, sizeof(BY_HANDLE_FILE_INFORMATION));
 270
 271                         if (!entry->_data.cFileName[0])
 272                                 /*hr = */name_from_pidl(_folder, pidls[n], entry->_data.cFileName, MAX_PATH, SHGDN_INFOLDER|0x2000/*0x2000=SHGDN_INCLUDE_NONFILESYS*/);
 273
 274                          // get display icons for files and virtual objects
 275                         if (!(entry->_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ||
 276                                 !(attribs & SFGAO_FILESYSTEM)) {
 277                                 entry->_hIcon = extract_icon(_folder, pidls[n]);
 278
 279                                 if (!entry->_hIcon)
 280                                         entry->_hIcon = (HICON)-1;      // don't try again later
 281                         }
 282
 283                         entry->_down = NULL;
 284                         entry->_expanded = false;
 285                         entry->_scanned = false;
 286                         entry->_level = level;
 287                         entry->_shell_attribs = attribs;
 288                         entry->_bhfi_valid = bhfi_valid;
 289
 290                         last = entry;
 291                 }
 292         } while(SUCCEEDED(hr_next));
 293
 294         if (last)
 295                 last->_next = NULL;
 296
 297         _down = first_entry;
 298         _scanned = true;
 299 }
 300
 301 const void* ShellDirectory::get_next_path_component(const void* p)
 302 {
 303         LPITEMIDLIST pidl = (LPITEMIDLIST)p;
 304
 305         if (!pidl || !pidl->mkid.cb)
 306                 return NULL;
 307
 308          // go to next element
 309         pidl = (LPITEMIDLIST)((LPBYTE)pidl+pidl->mkid.cb);
 310
 311         return pidl;
 312 }
 313
 314 Entry* ShellDirectory::find_entry(const void* p)
 315 {
 316         LPITEMIDLIST pidl = (LPITEMIDLIST) p;
 317
 318         for(Entry*entry=_down; entry; entry=entry->_next) {
 319                 ShellEntry* e = static_cast<ShellEntry*>(entry);
 320
 321                 if (e->_pidl && e->_pidl->mkid.cb==pidl->mkid.cb && !memcmp(e->_pidl, pidl, e->_pidl->mkid.cb))
 322                         return entry;
 323         }
 324
 325         return NULL;
 326 }