programs/regedit/treeview.c

   1 /*
   2  * Regedit treeview
   3  *
   4  * Copyright (C) 2002 Robert Dickenson <robd@reactos.org>
   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #define WIN32_LEAN_AND_MEAN     /* Exclude rarely-used stuff from Windows headers */
  22
  23 #define NONAMELESSUNION
  24 #define NONAMELESSSTRUCT
  25 #include <windows.h>
  26 #include <commctrl.h>
  27 #include <stdlib.h>
  28 #include <tchar.h>
  29 #include <process.h>
  30 #include <stdio.h>
  31
  32 #include "main.h"
  33
  34 /* Global variables and constants  */
  35 /* Image_Open, Image_Closed, and Image_Root - integer variables for indexes of the images.  */
  36 /* CX_BITMAP and CY_BITMAP - width and height of an icon.  */
  37 /* NUM_BITMAPS - number of bitmaps to add to the image list.  */
  38 int Image_Open;
  39 int Image_Closed;
  40 int Image_Root;
  41
  42 static LPTSTR pathBuffer;
  43
  44 #define CX_ICON    16
  45 #define CY_ICON    16
  46 #define NUM_ICONS    3
  47
  48 static BOOL get_item_path(HWND hwndTV, HTREEITEM hItem, HKEY* phKey, LPTSTR* pKeyPath, int* pPathLen, int* pMaxLen)
  49 {
  50     TVITEM item;
  51     int maxLen, len;
  52     LPTSTR newStr;
  53
  54     item.mask = TVIF_PARAM;
  55     item.hItem = hItem;
  56     if (!TreeView_GetItem(hwndTV, &item)) return FALSE;
  57
  58     if (item.lParam) {
  59         /* found root key with valid key value */
  60         *phKey = (HKEY)item.lParam;
  61         return TRUE;
  62     }
  63
  64     if(!get_item_path(hwndTV, TreeView_GetParent(hwndTV, hItem), phKey, pKeyPath, pPathLen, pMaxLen)) return FALSE;
  65     if (*pPathLen) {
  66         (*pKeyPath)[*pPathLen] = _T('\\');
  67         ++(*pPathLen);
  68     }
  69
  70     do {
  71         item.mask = TVIF_TEXT;
  72         item.hItem = hItem;
  73         item.pszText = *pKeyPath + *pPathLen;
  74         item.cchTextMax = maxLen = *pMaxLen - *pPathLen;
  75         if (!TreeView_GetItem(hwndTV, &item)) return FALSE;
  76         len = _tcslen(item.pszText);
  77         if (len < maxLen - 1) {
  78             *pPathLen += len;
  79             break;
  80         }
  81         newStr = HeapReAlloc(GetProcessHeap(), 0, *pKeyPath, *pMaxLen * 2);
  82         if (!newStr) return FALSE;
  83         *pKeyPath = newStr;
  84         *pMaxLen *= 2;
  85     } while(TRUE);
  86
  87     return TRUE;
  88 }
  89
  90 LPCTSTR GetItemPath(HWND hwndTV, HTREEITEM hItem, HKEY* phRootKey)
  91 {
  92     int pathLen = 0, maxLen;
  93
  94     if (!pathBuffer) pathBuffer = HeapAlloc(GetProcessHeap(), 0, 1024);
  95     if (!pathBuffer) return NULL;
  96     *pathBuffer = 0;
  97     maxLen = HeapSize(GetProcessHeap(), 0, pathBuffer);
  98     if (maxLen == (SIZE_T) - 1) return NULL;
  99     if (!hItem) hItem = TreeView_GetSelection(hwndTV);
 100     if (!hItem) return NULL;
 101     if (!get_item_path(hwndTV, hItem, phRootKey, &pathBuffer, &pathLen, &maxLen)) return NULL;
 102     return pathBuffer;
 103 }
 104
 105 BOOL DeleteNode(HWND hwndTV, HTREEITEM hItem)
 106 {
 107     if (!hItem) hItem = TreeView_GetSelection(hwndTV);
 108     if (!hItem) return FALSE;
 109     return TreeView_DeleteItem(hwndTV, hItem);
 110 }
 111
 112 static HTREEITEM AddEntryToTree(HWND hwndTV, HTREEITEM hParent, LPTSTR label, HKEY hKey, DWORD dwChildren)
 113 {
 114     TVITEM tvi;
 115     TVINSERTSTRUCT tvins;
 116
 117     tvi.mask = TVIF_TEXT | TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_CHILDREN | TVIF_PARAM;
 118     tvi.pszText = label;
 119     tvi.cchTextMax = lstrlen(tvi.pszText);
 120     tvi.iImage = Image_Closed;
 121     tvi.iSelectedImage = Image_Open;
 122     tvi.cChildren = dwChildren;
 123     tvi.lParam = (LPARAM)hKey;
 124     tvins.u.item = tvi;
 125     tvins.hInsertAfter = (HTREEITEM)(hKey ? TVI_LAST : TVI_SORT);
 126     tvins.hParent = hParent;
 127     return TreeView_InsertItem(hwndTV, &tvins);
 128 }
 129
 130
 131 HTREEITEM InsertNode(HWND hwndTV, HTREEITEM hItem, LPTSTR name)
 132 {
 133     TCHAR buf[MAX_NEW_KEY_LEN];
 134     HTREEITEM hNewItem = 0;
 135     TVITEMEX item;
 136
 137     if (!hItem) hItem = TreeView_GetSelection(hwndTV);
 138     if (!hItem) return FALSE;
 139     if (TreeView_GetItemState(hwndTV, hItem, TVIS_EXPANDEDONCE)) {
 140         hNewItem = AddEntryToTree(hwndTV, hItem, name, 0, 0);
 141     } else {
 142         item.mask = TVIF_CHILDREN | TVIF_HANDLE;
 143         item.hItem = hItem;
 144         if (!TreeView_GetItem(hwndTV, &item)) return FALSE;
 145         item.cChildren = 1;
 146         if (!TreeView_SetItem(hwndTV, &item)) return FALSE;
 147     }
 148     TreeView_Expand(hwndTV, hItem, TVE_EXPAND);
 149     if (!hNewItem) {
 150         for(hNewItem = TreeView_GetChild(hwndTV, hItem); hNewItem; hNewItem = TreeView_GetNextSibling(hwndTV, hNewItem)) {
 151             item.mask = TVIF_HANDLE | TVIF_TEXT;
 152             item.hItem = hNewItem;
 153             item.pszText = buf;
 154             item.cchTextMax = COUNT_OF(buf);
 155             if (!TreeView_GetItem(hwndTV, &item)) continue;
 156             if (lstrcmp(name, item.pszText) == 0) break;
 157         }
 158     }
 159     if (hNewItem) TreeView_SelectItem(hwndTV, hNewItem);
 160
 161     return hNewItem;
 162 }
 163
 164 HWND StartKeyRename(HWND hwndTV)
 165 {
 166     HTREEITEM hItem;
 167
 168     if(!(hItem = TreeView_GetSelection(hwndTV))) return 0;
 169     return TreeView_EditLabel(hwndTV, hItem);
 170 }
 171
 172 static BOOL InitTreeViewItems(HWND hwndTV, LPTSTR pHostName)
 173 {
 174     TVITEM tvi;
 175     TVINSERTSTRUCT tvins;
 176     HTREEITEM hRoot;
 177
 178     tvi.mask = TVIF_TEXT | TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_CHILDREN | TVIF_PARAM;
 179     /* Set the text of the item.  */
 180     tvi.pszText = pHostName;
 181     tvi.cchTextMax = lstrlen(tvi.pszText);
 182     /* Assume the item is not a parent item, so give it an image.  */
 183     tvi.iImage = Image_Root;
 184     tvi.iSelectedImage = Image_Root;
 185     tvi.cChildren = 5;
 186     /* Save the heading level in the item's application-defined data area.  */
 187     tvi.lParam = (LPARAM)NULL;
 188     tvins.u.item = tvi;
 189     tvins.hInsertAfter = (HTREEITEM)TVI_FIRST;
 190     tvins.hParent = TVI_ROOT;
 191     /* Add the item to the tree view control.  */
 192     if (!(hRoot = TreeView_InsertItem(hwndTV, &tvins))) return FALSE;
 193
 194     if (!AddEntryToTree(hwndTV, hRoot, _T("HKEY_CLASSES_ROOT"), HKEY_CLASSES_ROOT, 1)) return FALSE;
 195     if (!AddEntryToTree(hwndTV, hRoot, _T("HKEY_CURRENT_USER"), HKEY_CURRENT_USER, 1)) return FALSE;
 196     if (!AddEntryToTree(hwndTV, hRoot, _T("HKEY_LOCAL_MACHINE"), HKEY_LOCAL_MACHINE, 1)) return FALSE;
 197     if (!AddEntryToTree(hwndTV, hRoot, _T("HKEY_USERS"), HKEY_USERS, 1)) return FALSE;
 198     if (!AddEntryToTree(hwndTV, hRoot, _T("HKEY_CURRENT_CONFIG"), HKEY_CURRENT_CONFIG, 1)) return FALSE;
 199     if (!AddEntryToTree(hwndTV, hRoot, _T("HKEY_DYN_DATA"), HKEY_DYN_DATA, 1)) return FALSE;
 200
 201     /* expand and select host name */
 202     TreeView_Expand(hwndTV, hRoot, TVE_EXPAND);
 203     TreeView_Select(hwndTV, hRoot, TVGN_CARET);
 204     return TRUE;
 205 }
 206
 207
 208 /*
 209  * InitTreeViewImageLists - creates an image list, adds three bitmaps
 210  * to it, and associates the image list with a tree view control.
 211  * Returns TRUE if successful, or FALSE otherwise.
 212  * hwndTV - handle to the tree view control.
 213  */
 214 static BOOL InitTreeViewImageLists(HWND hwndTV)
 215 {
 216     HIMAGELIST himl;  /* handle to image list  */
 217     HICON hico;       /* handle to icon  */
 218
 219     /* Create the image list.  */
 220     if ((himl = ImageList_Create(CX_ICON, CY_ICON,
 221                                  ILC_MASK, 0, NUM_ICONS)) == NULL)
 222         return FALSE;
 223
 224     /* Add the open file, closed file, and document bitmaps.  */
 225     hico = LoadIcon(hInst, MAKEINTRESOURCE(IDI_OPEN_FILE));
 226     Image_Open = ImageList_AddIcon(himl, hico);
 227
 228     hico = LoadIcon(hInst, MAKEINTRESOURCE(IDI_CLOSED_FILE));
 229     Image_Closed = ImageList_AddIcon(himl, hico);
 230
 231     hico = LoadIcon(hInst, MAKEINTRESOURCE(IDI_ROOT));
 232     Image_Root = ImageList_AddIcon(himl, hico);
 233
 234     /* Fail if not all of the images were added.  */
 235     if (ImageList_GetImageCount(himl) < NUM_ICONS)
 236     {
 237       return FALSE;
 238     }
 239
 240     /* Associate the image list with the tree view control.  */
 241     TreeView_SetImageList(hwndTV, himl, TVSIL_NORMAL);
 242
 243     return TRUE;
 244 }
 245
 246 BOOL OnTreeExpanding(HWND hwndTV, NMTREEVIEW* pnmtv)
 247 {
 248     DWORD dwCount, dwIndex, dwMaxSubKeyLen;
 249     HKEY hRoot, hNewKey, hKey;
 250     LPCTSTR keyPath;
 251     LPTSTR Name;
 252     LONG errCode;
 253     HCURSOR hcursorOld;
 254
 255     static int expanding;
 256     if (expanding) return FALSE;
 257     if (pnmtv->itemNew.state & TVIS_EXPANDEDONCE ) {
 258         return TRUE;
 259     }
 260     expanding = TRUE;
 261     hcursorOld = SetCursor(LoadCursor(NULL, IDC_WAIT));
 262     SendMessage(hwndTV, WM_SETREDRAW, FALSE, 0);
 263
 264     keyPath = GetItemPath(hwndTV, pnmtv->itemNew.hItem, &hRoot);
 265     if (!keyPath) goto done;
 266
 267     if (*keyPath) {
 268         errCode = RegOpenKeyEx(hRoot, keyPath, 0, KEY_READ, &hNewKey);
 269         if (errCode != ERROR_SUCCESS) goto done;
 270     } else {
 271         hNewKey = hRoot;
 272     }
 273
 274     errCode = RegQueryInfoKey(hNewKey, 0, 0, 0, &dwCount, &dwMaxSubKeyLen, 0, 0, 0, 0, 0, 0);
 275     if (errCode != ERROR_SUCCESS) goto done;
 276     dwMaxSubKeyLen++; /* account for the \0 terminator */
 277     Name = HeapAlloc(GetProcessHeap(), 0, dwMaxSubKeyLen * sizeof(TCHAR));
 278     if (!Name) goto done;
 279
 280     for (dwIndex = 0; dwIndex < dwCount; dwIndex++) {
 281         DWORD cName = dwMaxSubKeyLen, dwSubCount;
 282         FILETIME LastWriteTime;
 283
 284         errCode = RegEnumKeyEx(hNewKey, dwIndex, Name, &cName, 0, 0, 0, &LastWriteTime);
 285         if (errCode != ERROR_SUCCESS) continue;
 286         errCode = RegOpenKeyEx(hNewKey, Name, 0, KEY_QUERY_VALUE, &hKey);
 287         if (errCode == ERROR_SUCCESS) {
 288             errCode = RegQueryInfoKey(hKey, 0, 0, 0, &dwSubCount, 0, 0, 0, 0, 0, 0, 0);
 289             RegCloseKey(hKey);
 290         }
 291         if (errCode != ERROR_SUCCESS) dwSubCount = 0;
 292         AddEntryToTree(hwndTV, pnmtv->itemNew.hItem, Name, NULL, dwSubCount);
 293     }
 294     RegCloseKey(hNewKey);
 295     HeapFree(GetProcessHeap(), 0, Name);
 296
 297 done:
 298     SendMessage(hwndTV, WM_SETREDRAW, TRUE, 0);
 299     SetCursor(hcursorOld);
 300     expanding = FALSE;
 301
 302     return TRUE;
 303 }
 304
 305
 306 /*
 307  * CreateTreeView - creates a tree view control.
 308  * Returns the handle to the new control if successful, or NULL otherwise.
 309  * hwndParent - handle to the control's parent window.
 310  */
 311 HWND CreateTreeView(HWND hwndParent, LPTSTR pHostName, int id)
 312 {
 313     RECT rcClient;
 314     HWND hwndTV;
 315
 316     /* Get the dimensions of the parent window's client area, and create the tree view control.  */
 317     GetClientRect(hwndParent, &rcClient);
 318     hwndTV = CreateWindowEx(WS_EX_CLIENTEDGE, WC_TREEVIEW, _T("Tree View"),
 319                             WS_VISIBLE | WS_CHILD | WS_TABSTOP | TVS_HASLINES | TVS_HASBUTTONS | TVS_LINESATROOT,
 320                             0, 0, rcClient.right, rcClient.bottom,
 321                             hwndParent, (HMENU)id, hInst, NULL);
 322     /* Initialize the image list, and add items to the control.  */
 323     if (!InitTreeViewImageLists(hwndTV) || !InitTreeViewItems(hwndTV, pHostName)) {
 324         DestroyWindow(hwndTV);
 325         return NULL;
 326     }
 327     return hwndTV;
 328 }