reactos/rosapps/regedit/treeview.c

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/*
* ReactOS regedit
*
* treeview.c
*
* Copyright (C) 2002 Robert Dickenson <robd@reactos.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#define WIN32_LEAN_AND_MEAN // Exclude rarely-used stuff from Windows headers
#include <windows.h>
#include <commctrl.h>
#include <stdlib.h>
#include <tchar.h>
#include <process.h>
#include <stdio.h>
#include "main.h"
#include "treeview.h"
// Global variables and constants
// Image_Open, Image_Closed, and Image_Root - integer variables for indexes of the images.
// CX_BITMAP and CY_BITMAP - width and height of an icon.
// NUM_BITMAPS - number of bitmaps to add to the image list.
int Image_Open;
int Image_Closed;
int Image_Root;
#define CX_BITMAP 16
#define CY_BITMAP 16
#define NUM_BITMAPS 3
HKEY FindRegRoot(HWND hwndTV, HTREEITEM hItem, LPTSTR keyPath, int* pPathLen, int max)
{
HKEY hKey = NULL;
TVITEM item;
item.mask = TVIF_PARAM;
item.hItem = TreeView_GetParent(hwndTV, hItem);
if (TreeView_GetItem(hwndTV, &item)) {
if (item.lParam == 0) {
// recurse
hKey = FindRegRoot(hwndTV, item.hItem, keyPath, pPathLen, max);
keyPath[*pPathLen] = _T('\\');
++(*pPathLen);
item.mask = TVIF_TEXT;
item.hItem = hItem;
item.pszText = &keyPath[*pPathLen];
item.cchTextMax = max - *pPathLen;
if (TreeView_GetItem(hwndTV, &item)) {
*pPathLen += _tcslen(item.pszText);
}
} else {
// found root key with valid key value
hKey = (HKEY)item.lParam;
item.mask = TVIF_TEXT;
item.hItem = hItem;
// item.pszText = &keyPath[*pPathLen];
item.pszText = keyPath;
item.cchTextMax = max;
if (TreeView_GetItem(hwndTV, &item)) {
*pPathLen += _tcslen(item.pszText);
}
}
}
return hKey;
}
static HTREEITEM AddEntryToTree(HWND hwndTV, HTREEITEM hParent, LPTSTR label, HKEY hKey, DWORD dwChildren)
{
HTREEITEM hItem = 0;
TVITEM tvi;
TVINSERTSTRUCT tvins;
tvi.mask = TVIF_TEXT | TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_CHILDREN | TVIF_PARAM;
tvi.pszText = label;
tvi.cchTextMax = lstrlen(tvi.pszText);
tvi.iImage = Image_Closed;
tvi.iSelectedImage = Image_Open;
tvi.cChildren = dwChildren;
tvi.lParam = (LPARAM)hKey;
tvins.item = tvi;
if (hKey) tvins.hInsertAfter = (HTREEITEM)TVI_LAST;
else tvins.hInsertAfter = (HTREEITEM)TVI_SORT;
tvins.hParent = hParent;
hItem = (HTREEITEM)SendMessage(hwndTV, TVM_INSERTITEM, 0, (LPARAM)(LPTVINSERTSTRUCT)&tvins);
return hItem;
}
static BOOL InitTreeViewItems(HWND hwndTV, LPTSTR pHostName)
{
TVITEM tvi;
TVINSERTSTRUCT tvins;
HTREEITEM hRoot;
tvi.mask = TVIF_TEXT | TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_CHILDREN | TVIF_PARAM;
// Set the text of the item.
tvi.pszText = pHostName;
tvi.cchTextMax = lstrlen(tvi.pszText);
// Assume the item is not a parent item, so give it an image.
tvi.iImage = Image_Root;
tvi.iSelectedImage = Image_Root;
tvi.cChildren = 5;
// Save the heading level in the item's application-defined data area.
tvi.lParam = (LPARAM)NULL;
tvins.item = tvi;
tvins.hInsertAfter = (HTREEITEM)TVI_FIRST;
tvins.hParent = TVI_ROOT;
// Add the item to the tree view control.
hRoot = (HTREEITEM)SendMessage(hwndTV, TVM_INSERTITEM, 0, (LPARAM)(LPTVINSERTSTRUCT)&tvins);
AddEntryToTree(hwndTV, hRoot, _T("HKEY_CLASSES_ROOT"), HKEY_CLASSES_ROOT, 1);
AddEntryToTree(hwndTV, hRoot, _T("HKEY_CURRENT_USER"), HKEY_CURRENT_USER, 1);
AddEntryToTree(hwndTV, hRoot, _T("HKEY_LOCAL_MACHINE"), HKEY_LOCAL_MACHINE, 1);
AddEntryToTree(hwndTV, hRoot, _T("HKEY_USERS"), HKEY_USERS, 1);
AddEntryToTree(hwndTV, hRoot, _T("HKEY_CURRENT_CONFIG"), HKEY_CURRENT_CONFIG, 1);
return TRUE;
}
// InitTreeViewImageLists - creates an image list, adds three bitmaps
// to it, and associates the image list with a tree view control.
// Returns TRUE if successful, or FALSE otherwise.
// hwndTV - handle to the tree view control.
static BOOL InitTreeViewImageLists(HWND hwndTV)
{
HIMAGELIST himl; // handle to image list
HBITMAP hbmp; // handle to bitmap
// Create the image list.
if ((himl = ImageList_Create(CX_BITMAP, CY_BITMAP,
FALSE, NUM_BITMAPS, 0)) == NULL)
return FALSE;
// Add the open file, closed file, and document bitmaps.
hbmp = LoadBitmap(hInst, MAKEINTRESOURCE(IDB_OPEN_FILE));
Image_Open = ImageList_Add(himl, hbmp, (HBITMAP) NULL);
DeleteObject(hbmp);
hbmp = LoadBitmap(hInst, MAKEINTRESOURCE(IDB_CLOSED_FILE));
Image_Closed = ImageList_Add(himl, hbmp, (HBITMAP) NULL);
DeleteObject(hbmp);
hbmp = LoadBitmap(hInst, MAKEINTRESOURCE(IDB_ROOT));
Image_Root = ImageList_Add(himl, hbmp, (HBITMAP) NULL);
DeleteObject(hbmp);
// Fail if not all of the images were added.
if (ImageList_GetImageCount(himl) < 3)
return FALSE;
// Associate the image list with the tree view control.
TreeView_SetImageList(hwndTV, himl, TVSIL_NORMAL);
return TRUE;
}
BOOL OnTreeExpanding(HWND hwndTV, NMTREEVIEW* pnmtv)
{
HKEY hKey;
TCHAR keyPath[1000];
int keyPathLen = 0;
static int expanding;
if (expanding) return FALSE;
if (pnmtv->itemNew.state & TVIS_EXPANDEDONCE ) {
return TRUE;
}
expanding = TRUE;
// check if this is either the root or a subkey item...
if ((HKEY)pnmtv->itemNew.lParam == NULL) {
keyPath[0] = _T('\0');
hKey = FindRegRoot(hwndTV, pnmtv->itemNew.hItem, keyPath, &keyPathLen, sizeof(keyPath)/sizeof(TCHAR));
} else {
hKey = (HKEY)pnmtv->itemNew.lParam;
keyPath[0] = _T('\0');
}
if (hKey != NULL) {
HKEY hNewKey;
LONG errCode = RegOpenKeyEx(hKey, keyPath, 0, KEY_READ, &hNewKey);
if (errCode == ERROR_SUCCESS) {
TCHAR Name[MAX_NAME_LEN];
DWORD cName = MAX_NAME_LEN;
FILETIME LastWriteTime;
DWORD dwIndex = 0L;
//ShowWindow(hwndTV, SW_HIDE);
while (RegEnumKeyEx(hNewKey, dwIndex, Name, &cName, NULL, NULL, NULL, &LastWriteTime) == ERROR_SUCCESS) {
DWORD dwCount = 0L;
errCode = RegOpenKeyEx(hNewKey, Name, 0, KEY_READ, &hKey);
if (errCode == ERROR_SUCCESS) {
TCHAR SubName[MAX_NAME_LEN];
DWORD cSubName = MAX_NAME_LEN;
// if (RegEnumKeyEx(hKey, 0, SubName, &cSubName, NULL, NULL, NULL, NULL) == ERROR_SUCCESS) {
while (RegEnumKeyEx(hKey, dwCount, SubName, &cSubName, NULL, NULL, NULL, NULL) == ERROR_SUCCESS) {
++dwCount;
}
}
RegCloseKey(hKey);
AddEntryToTree(hwndTV, pnmtv->itemNew.hItem, Name, NULL, dwCount);
cName = MAX_NAME_LEN;
++dwIndex;
}
//ShowWindow(hwndTV, SW_SHOWNOACTIVATE);
RegCloseKey(hNewKey);
}
} else {
}
expanding = FALSE;
return TRUE;
}
// CreateTreeView - creates a tree view control.
// Returns the handle to the new control if successful, or NULL otherwise.
// hwndParent - handle to the control's parent window.
HWND CreateTreeView(HWND hwndParent, LPTSTR pHostName, int id)
{
RECT rcClient;
HWND hwndTV;
// Get the dimensions of the parent window's client area, and create the tree view control.
GetClientRect(hwndParent, &rcClient);
hwndTV = CreateWindowEx(WS_EX_CLIENTEDGE, WC_TREEVIEW, _T("Tree View"),
WS_VISIBLE | WS_CHILD | TVS_HASLINES | TVS_HASBUTTONS | TVS_LINESATROOT,
0, 0, rcClient.right, rcClient.bottom,
hwndParent, (HMENU)id, hInst, NULL);
// Initialize the image list, and add items to the control.
if (!InitTreeViewImageLists(hwndTV) || !InitTreeViewItems(hwndTV, pHostName)) {
DestroyWindow(hwndTV);
return NULL;
}
return hwndTV;
}