rosapps/regedit/treeview.c

   1 /*
   2  *  ReactOS regedit
   3  *
   4  *  treeview.c
   5  *
   6  *  Copyright (C) 2002  Robert Dickenson <robd@reactos.org>
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  */
  22
  23 #define WIN32_LEAN_AND_MEAN     // Exclude rarely-used stuff from Windows headers
  24 #include <windows.h>
  25 #include <commctrl.h>
  26 #include <stdlib.h>
  27 #include <malloc.h>
  28 #include <memory.h>
  29 #include <tchar.h>
  30 #include <process.h>
  31 #include <stdio.h>
  32
  33 #include "main.h"
  34 #include "treeview.h"
  35
  36
  37 // Global variables and constants
  38 // Image_Open, Image_Closed, and Image_Root - integer variables for indexes of the images.
  39 // CX_BITMAP and CY_BITMAP - width and height of an icon.
  40 // NUM_BITMAPS - number of bitmaps to add to the image list.
  41 int Image_Open;
  42 int Image_Closed;
  43 int Image_Root;
  44
  45 #define CX_BITMAP    16
  46 #define CY_BITMAP    16
  47 #define NUM_BITMAPS  3
  48
  49
  50 HKEY FindRegRoot(HWND hwndTV, HTREEITEM hItem, LPTSTR keyPath, int* pPathLen, int max)
  51 {
  52     HKEY hKey = NULL;
  53     TVITEM item;
  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.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.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 // InitTreeViewImageLists - creates an image list, adds three bitmaps
 140 // to it, and associates the image list with a tree view control.
 141 // Returns TRUE if successful, or FALSE otherwise.
 142 // hwndTV - handle to the tree view control.
 143
 144 static BOOL InitTreeViewImageLists(HWND hwndTV)
 145 {
 146     HIMAGELIST himl;  // handle to image list
 147     HBITMAP hbmp;     // handle to bitmap
 148
 149     // Create the image list.
 150     if ((himl = ImageList_Create(CX_BITMAP, CY_BITMAP,
 151         FALSE, NUM_BITMAPS, 0)) == NULL)
 152         return FALSE;
 153
 154     // Add the open file, closed file, and document bitmaps.
 155     hbmp = LoadBitmap(hInst, MAKEINTRESOURCE(IDB_OPEN_FILE));
 156     Image_Open = ImageList_Add(himl, hbmp, (HBITMAP) NULL);
 157     DeleteObject(hbmp);
 158
 159     hbmp = LoadBitmap(hInst, MAKEINTRESOURCE(IDB_CLOSED_FILE));
 160     Image_Closed = ImageList_Add(himl, hbmp, (HBITMAP) NULL);
 161     DeleteObject(hbmp);
 162
 163     hbmp = LoadBitmap(hInst, MAKEINTRESOURCE(IDB_ROOT));
 164     Image_Root = ImageList_Add(himl, hbmp, (HBITMAP) NULL);
 165     DeleteObject(hbmp);
 166
 167     // Fail if not all of the images were added.
 168     if (ImageList_GetImageCount(himl) < 3)
 169         return FALSE;
 170
 171     // Associate the image list with the tree view control.
 172     TreeView_SetImageList(hwndTV, himl, TVSIL_NORMAL);
 173
 174     return TRUE;
 175 }
 176
 177 BOOL OnTreeExpanding(HWND hwndTV, NMTREEVIEW* pnmtv)
 178 {
 179     HKEY hKey;
 180     TCHAR keyPath[1000];
 181     int keyPathLen = 0;
 182
 183     static int expanding;
 184     if (expanding) return FALSE;
 185     if (pnmtv->itemNew.state & TVIS_EXPANDEDONCE ) {
 186         return TRUE;
 187     }
 188     expanding = TRUE;
 189
 190     // check if this is either the root or a subkey item...
 191     if ((HKEY)pnmtv->itemNew.lParam == NULL) {
 192         keyPath[0] = _T('\0');
 193         hKey = FindRegRoot(hwndTV, pnmtv->itemNew.hItem, keyPath, &keyPathLen, sizeof(keyPath)/sizeof(TCHAR));
 194     } else {
 195         hKey = (HKEY)pnmtv->itemNew.lParam;
 196         keyPath[0] = _T('\0');
 197     }
 198
 199     if (hKey != NULL) {
 200         HKEY hNewKey;
 201         LONG errCode = RegOpenKeyEx(hKey, keyPath, 0, KEY_READ, &hNewKey);
 202         if (errCode == ERROR_SUCCESS) {
 203             TCHAR Name[MAX_NAME_LEN];
 204             DWORD cName = MAX_NAME_LEN;
 205             FILETIME LastWriteTime;
 206             DWORD dwIndex = 0L;
 207             //ShowWindow(hwndTV, SW_HIDE);
 208             while (RegEnumKeyEx(hNewKey, dwIndex, Name, &cName, NULL, NULL, NULL, &LastWriteTime) == ERROR_SUCCESS) {
 209                 DWORD dwCount = 0L;
 210                 errCode = RegOpenKeyEx(hNewKey, Name, 0, KEY_READ, &hKey);
 211                 if (errCode == ERROR_SUCCESS) {
 212                     TCHAR SubName[MAX_NAME_LEN];
 213                     DWORD cSubName = MAX_NAME_LEN;
 214 //                    if (RegEnumKeyEx(hKey, 0, SubName, &cSubName, NULL, NULL, NULL, NULL) == ERROR_SUCCESS) {
 215                     while (RegEnumKeyEx(hKey, dwCount, SubName, &cSubName, NULL, NULL, NULL, NULL) == ERROR_SUCCESS) {
 216                         ++dwCount;
 217                     }
 218                 }
 219                 RegCloseKey(hKey);
 220                 AddEntryToTree(hwndTV, pnmtv->itemNew.hItem, Name, NULL, dwCount);
 221                 cName = MAX_NAME_LEN;
 222                 ++dwIndex;
 223             }
 224                 //ShowWindow(hwndTV, SW_SHOWNOACTIVATE);
 225             RegCloseKey(hNewKey);
 226         }
 227     } else {
 228     }
 229     expanding = FALSE;
 230     return TRUE;
 231 }
 232
 233 // CreateTreeView - creates a tree view control.
 234 // Returns the handle to the new control if successful, or NULL otherwise.
 235 // hwndParent - handle to the control's parent window.
 236
 237 HWND CreateTreeView(HWND hwndParent, LPTSTR pHostName, int id)
 238 {
 239     RECT rcClient;
 240     HWND hwndTV;
 241
 242     // Get the dimensions of the parent window's client area, and create the tree view control.
 243     GetClientRect(hwndParent, &rcClient);
 244     hwndTV = CreateWindowEx(WS_EX_CLIENTEDGE, WC_TREEVIEW, _T("Tree View"),
 245         WS_VISIBLE | WS_CHILD | TVS_HASLINES | TVS_HASBUTTONS | TVS_LINESATROOT,
 246         0, 0, rcClient.right, rcClient.bottom,
 247         hwndParent, (HMENU)id, hInst, NULL);
 248     // Initialize the image list, and add items to the control.
 249     if (!InitTreeViewImageLists(hwndTV) || !InitTreeViewItems(hwndTV, pHostName)) {
 250         DestroyWindow(hwndTV);
 251         return NULL;
 252     }
 253     return hwndTV;
 254 }