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