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 #define CX_BITMAP    16
  43 #define CY_BITMAP    16
  44 #define NUM_BITMAPS  3
  45
  46
  47 HKEY FindRegRoot(HWND hwndTV, HTREEITEM hItem, LPTSTR keyPath, int* pPathLen, int max)
  48 {
  49     HKEY hKey = NULL;
  50     TVITEM item;
  51
  52     if (!hItem) hItem = TreeView_GetSelection(hwndTV);
  53
  54     item.mask = TVIF_PARAM;
  55     item.hItem = TreeView_GetParent(hwndTV, hItem);
  56
  57     if (TreeView_GetItem(hwndTV, &item)) {
  58         if (item.lParam == 0) {
  59             /* recurse */
  60             hKey = FindRegRoot(hwndTV, item.hItem, keyPath, pPathLen, max);
  61             keyPath[*pPathLen] = _T('\\');
  62             ++(*pPathLen);
  63             item.mask = TVIF_TEXT;
  64             item.hItem = hItem;
  65             item.pszText = &keyPath[*pPathLen];
  66             item.cchTextMax = max - *pPathLen;
  67             if (TreeView_GetItem(hwndTV, &item)) {
  68                 *pPathLen += _tcslen(item.pszText);
  69             }
  70         } else {
  71             /* found root key with valid key value */
  72             hKey = (HKEY)item.lParam;
  73             item.mask = TVIF_TEXT;
  74             item.hItem = hItem;
  75             /*            item.pszText = &keyPath[*pPathLen]; */
  76             item.pszText = keyPath;
  77             item.cchTextMax = max;
  78             if (TreeView_GetItem(hwndTV, &item)) {
  79                 *pPathLen += _tcslen(item.pszText);
  80             }
  81         }
  82     }
  83     return hKey;
  84 }
  85
  86 static HTREEITEM AddEntryToTree(HWND hwndTV, HTREEITEM hParent, LPTSTR label, HKEY hKey, DWORD dwChildren)
  87 {
  88     HTREEITEM hItem = 0;
  89     TVITEM tvi;
  90     TVINSERTSTRUCT tvins;
  91
  92     tvi.mask = TVIF_TEXT | TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_CHILDREN | TVIF_PARAM;
  93     tvi.pszText = label;
  94     tvi.cchTextMax = lstrlen(tvi.pszText);
  95     tvi.iImage = Image_Closed;
  96     tvi.iSelectedImage = Image_Open;
  97     tvi.cChildren = dwChildren;
  98     tvi.lParam = (LPARAM)hKey;
  99     tvins.u.item = tvi;
 100     if (hKey) tvins.hInsertAfter = (HTREEITEM)TVI_LAST;
 101     else      tvins.hInsertAfter = (HTREEITEM)TVI_SORT;
 102     tvins.hParent = hParent;
 103     hItem = (HTREEITEM)SendMessage(hwndTV, TVM_INSERTITEM, 0, (LPARAM)(LPTVINSERTSTRUCT)&tvins);
 104     return hItem;
 105 }
 106
 107
 108 static BOOL InitTreeViewItems(HWND hwndTV, LPTSTR pHostName)
 109 {
 110     TVITEM tvi;
 111     TVINSERTSTRUCT tvins;
 112     HTREEITEM hRoot;
 113
 114     tvi.mask = TVIF_TEXT | TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_CHILDREN | TVIF_PARAM;
 115     /* Set the text of the item.  */
 116     tvi.pszText = pHostName;
 117     tvi.cchTextMax = lstrlen(tvi.pszText);
 118     /* Assume the item is not a parent item, so give it an image.  */
 119     tvi.iImage = Image_Root;
 120     tvi.iSelectedImage = Image_Root;
 121     tvi.cChildren = 5;
 122     /* Save the heading level in the item's application-defined data area.  */
 123     tvi.lParam = (LPARAM)NULL;
 124     tvins.u.item = tvi;
 125     tvins.hInsertAfter = (HTREEITEM)TVI_FIRST;
 126     tvins.hParent = TVI_ROOT;
 127     /* Add the item to the tree view control.  */
 128     hRoot = (HTREEITEM)SendMessage(hwndTV, TVM_INSERTITEM, 0, (LPARAM)(LPTVINSERTSTRUCT)&tvins);
 129
 130     AddEntryToTree(hwndTV, hRoot, _T("HKEY_CLASSES_ROOT"), HKEY_CLASSES_ROOT, 1);
 131     AddEntryToTree(hwndTV, hRoot, _T("HKEY_CURRENT_USER"), HKEY_CURRENT_USER, 1);
 132     AddEntryToTree(hwndTV, hRoot, _T("HKEY_LOCAL_MACHINE"), HKEY_LOCAL_MACHINE, 1);
 133     AddEntryToTree(hwndTV, hRoot, _T("HKEY_USERS"), HKEY_USERS, 1);
 134     AddEntryToTree(hwndTV, hRoot, _T("HKEY_CURRENT_CONFIG"), HKEY_CURRENT_CONFIG, 1);
 135
 136     return TRUE;
 137 }
 138
 139 /*
 140  * InitTreeViewImageLists - creates an image list, adds three bitmaps
 141  * to it, and associates the image list with a tree view control.
 142  * Returns TRUE if successful, or FALSE otherwise.
 143  * hwndTV - handle to the tree view control.
 144  */
 145
 146 static BOOL InitTreeViewImageLists(HWND hwndTV)
 147 {
 148     HIMAGELIST himl;  /* handle to image list  */
 149     HBITMAP hbmp;     /* handle to bitmap  */
 150
 151     /* Create the image list.  */
 152     if ((himl = ImageList_Create(CX_BITMAP, CY_BITMAP,
 153                                  FALSE, NUM_BITMAPS, 0)) == NULL)
 154         return FALSE;
 155
 156     /* Add the open file, closed file, and document bitmaps.  */
 157     hbmp = LoadBitmap(hInst, MAKEINTRESOURCE(IDB_OPEN_FILE));
 158     Image_Open = ImageList_Add(himl, hbmp, (HBITMAP) NULL);
 159     DeleteObject(hbmp);
 160
 161     hbmp = LoadBitmap(hInst, MAKEINTRESOURCE(IDB_CLOSED_FILE));
 162     Image_Closed = ImageList_Add(himl, hbmp, (HBITMAP) NULL);
 163     DeleteObject(hbmp);
 164
 165     hbmp = LoadBitmap(hInst, MAKEINTRESOURCE(IDB_ROOT));
 166     Image_Root = ImageList_Add(himl, hbmp, (HBITMAP) NULL);
 167     DeleteObject(hbmp);
 168
 169     /* Fail if not all of the images were added.  */
 170     if (ImageList_GetImageCount(himl) < 3)
 171         return FALSE;
 172
 173     /* Associate the image list with the tree view control.  */
 174     TreeView_SetImageList(hwndTV, himl, TVSIL_NORMAL);
 175
 176     return TRUE;
 177 }
 178
 179 BOOL OnTreeExpanding(HWND hwndTV, NMTREEVIEW* pnmtv)
 180 {
 181     HKEY hKey;
 182     TCHAR keyPath[1000];
 183     int keyPathLen = 0;
 184
 185     static int expanding;
 186     if (expanding) return FALSE;
 187     if (pnmtv->itemNew.state & TVIS_EXPANDEDONCE ) {
 188         return TRUE;
 189     }
 190     expanding = TRUE;
 191
 192     /* check if this is either the root or a subkey item... */
 193     if ((HKEY)pnmtv->itemNew.lParam == NULL) {
 194         keyPath[0] = _T('\0');
 195         hKey = FindRegRoot(hwndTV, pnmtv->itemNew.hItem, keyPath, &keyPathLen, sizeof(keyPath)/sizeof(TCHAR));
 196     } else {
 197         hKey = (HKEY)pnmtv->itemNew.lParam;
 198         keyPath[0] = _T('\0');
 199     }
 200
 201     if (hKey != NULL) {
 202         HKEY hNewKey;
 203         LONG errCode = RegOpenKeyEx(hKey, keyPath, 0, KEY_READ, &hNewKey);
 204         if (errCode == ERROR_SUCCESS) {
 205             TCHAR Name[MAX_NAME_LEN];
 206             DWORD cName = MAX_NAME_LEN;
 207             FILETIME LastWriteTime;
 208             DWORD dwIndex = 0L;
 209             /*ShowWindow(hwndTV, SW_HIDE); */
 210             while (RegEnumKeyEx(hNewKey, dwIndex, Name, &cName, NULL, NULL, NULL, &LastWriteTime) == ERROR_SUCCESS) {
 211                 DWORD dwCount = 0L;
 212                 errCode = RegOpenKeyEx(hNewKey, Name, 0, KEY_READ, &hKey);
 213                 if (errCode == ERROR_SUCCESS) {
 214                     TCHAR SubName[MAX_NAME_LEN];
 215                     DWORD cSubName = MAX_NAME_LEN;
 216                     /*                    if (RegEnumKeyEx(hKey, 0, SubName, &cSubName, NULL, NULL, NULL, NULL) == ERROR_SUCCESS) { */
 217                     while (RegEnumKeyEx(hKey, dwCount, SubName, &cSubName, NULL, NULL, NULL, NULL) == ERROR_SUCCESS) {
 218                         ++dwCount;
 219                     }
 220                 }
 221                 RegCloseKey(hKey);
 222                 AddEntryToTree(hwndTV, pnmtv->itemNew.hItem, Name, NULL, dwCount);
 223                 cName = MAX_NAME_LEN;
 224                 ++dwIndex;
 225             }
 226             /*ShowWindow(hwndTV, SW_SHOWNOACTIVATE); */
 227             RegCloseKey(hNewKey);
 228         }
 229     }
 230     expanding = FALSE;
 231     return TRUE;
 232 }
 233
 234 /*
 235  * CreateTreeView - creates a tree view control.
 236  * Returns the handle to the new control if successful, or NULL otherwise.
 237  * hwndParent - handle to the control's parent window.
 238  */
 239
 240 HWND CreateTreeView(HWND hwndParent, LPTSTR pHostName, int id)
 241 {
 242     RECT rcClient;
 243     HWND hwndTV;
 244
 245     /* Get the dimensions of the parent window's client area, and create the tree view control.  */
 246     GetClientRect(hwndParent, &rcClient);
 247     hwndTV = CreateWindowEx(WS_EX_CLIENTEDGE, WC_TREEVIEW, _T("Tree View"),
 248                             WS_VISIBLE | WS_CHILD | TVS_HASLINES | TVS_HASBUTTONS | TVS_LINESATROOT,
 249                             0, 0, rcClient.right, rcClient.bottom,
 250                             hwndParent, (HMENU)id, hInst, NULL);
 251     /* Initialize the image list, and add items to the control.  */
 252     if (!InitTreeViewImageLists(hwndTV) || !InitTreeViewItems(hwndTV, pHostName)) {
 253         DestroyWindow(hwndTV);
 254         return NULL;
 255     }
 256     return hwndTV;
 257 }