reactos/subsys/system/regedit/childwnd.c

   1 /*
   2  * Regedit child window
   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 #include <windows.h>
  23 #include <commctrl.h>
  24 #include <tchar.h>
  25 #include <stdio.h>
  26
  27 #include "main.h"
  28
  29 ChildWnd* g_pChildWnd;
  30 HBITMAP SizingPattern = 0;
  31 HBRUSH  SizingBrush = 0;
  32
  33 /*******************************************************************************
  34  * Local module support methods
  35  */
  36
  37 static LPCTSTR get_root_key_name(HKEY hRootKey)
  38 {
  39     if (hRootKey == HKEY_CLASSES_ROOT) return _T("HKEY_CLASSES_ROOT");
  40     if (hRootKey == HKEY_CURRENT_USER) return _T("HKEY_CURRENT_USER");
  41     if (hRootKey == HKEY_LOCAL_MACHINE) return _T("HKEY_LOCAL_MACHINE");
  42     if (hRootKey == HKEY_USERS) return _T("HKEY_USERS");
  43     if (hRootKey == HKEY_CURRENT_CONFIG) return _T("HKEY_CURRENT_CONFIG");
  44     return _T("UKNOWN HKEY, PLEASE REPORT");
  45 }
  46
  47 static void draw_splitbar(HWND hWnd, int x)
  48 {
  49     RECT rt;
  50     HGDIOBJ OldObj;
  51     HDC hdc = GetDC(hWnd);
  52
  53     if(!SizingPattern)
  54     {
  55       const DWORD Pattern[4] = {0x5555AAAA, 0x5555AAAA, 0x5555AAAA, 0x5555AAAA};
  56       SizingPattern = CreateBitmap(8, 8, 1, 1, Pattern);
  57     }
  58     if(!SizingBrush)
  59     {
  60       SizingBrush = CreatePatternBrush(SizingPattern);
  61     }
  62     GetClientRect(hWnd, &rt);
  63     rt.left = x - SPLIT_WIDTH/2;
  64     rt.right = x + SPLIT_WIDTH/2+1;
  65     OldObj = SelectObject(hdc, SizingBrush);
  66     PatBlt(hdc, rt.left, rt.top, rt.right - rt.left, rt.bottom - rt.top, PATINVERT);
  67     SelectObject(hdc, OldObj);
  68     ReleaseDC(hWnd, hdc);
  69 }
  70
  71 static void ResizeWnd(ChildWnd* pChildWnd, int cx, int cy)
  72 {
  73     HDWP hdwp = BeginDeferWindowPos(2);
  74     RECT rt = {0, 0, cx, cy};
  75
  76     cx = pChildWnd->nSplitPos + SPLIT_WIDTH/2;
  77     DeferWindowPos(hdwp, pChildWnd->hTreeWnd, 0, rt.left, rt.top, pChildWnd->nSplitPos-SPLIT_WIDTH/2-rt.left, rt.bottom-rt.top, SWP_NOZORDER|SWP_NOACTIVATE);
  78     DeferWindowPos(hdwp, pChildWnd->hListWnd, 0, rt.left+cx  , rt.top, rt.right-cx, rt.bottom-rt.top, SWP_NOZORDER|SWP_NOACTIVATE);
  79     EndDeferWindowPos(hdwp);
  80 }
  81
  82 static void OnPaint(HWND hWnd)
  83 {
  84     PAINTSTRUCT ps;
  85     RECT rt;
  86     HDC hdc;
  87
  88     GetClientRect(hWnd, &rt);
  89     hdc = BeginPaint(hWnd, &ps);
  90     FillRect(ps.hdc, &rt, GetSysColorBrush(COLOR_BTNFACE));
  91     EndPaint(hWnd, &ps);
  92 }
  93
  94 /*******************************************************************************
  95  *
  96  *  FUNCTION: _CmdWndProc(HWND, unsigned, WORD, LONG)
  97  *
  98  *  PURPOSE:  Processes WM_COMMAND messages for the main frame window.
  99  *
 100  */
 101
 102 static BOOL _CmdWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 103 {
 104     switch (LOWORD(wParam)) {
 105         /* Parse the menu selections: */
 106     case ID_REGISTRY_EXIT:
 107         DestroyWindow(hWnd);
 108         break;
 109     case ID_VIEW_REFRESH:
 110         /* TODO */
 111         break;
 112     default:
 113         return FALSE;
 114     }
 115     return TRUE;
 116 }
 117
 118 /*******************************************************************************
 119  *
 120  *  FUNCTION: ChildWndProc(HWND, unsigned, WORD, LONG)
 121  *
 122  *  PURPOSE:  Processes messages for the child windows.
 123  *
 124  *  WM_COMMAND  - process the application menu
 125  *  WM_PAINT    - Paint the main window
 126  *  WM_DESTROY  - post a quit message and return
 127  *
 128  */
 129 LRESULT CALLBACK ChildWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 130 {
 131     static short last_split;
 132     BOOL Result;
 133     ChildWnd* pChildWnd = g_pChildWnd;
 134
 135     switch (message) {
 136     case WM_CREATE:
 137     {
 138         TCHAR buffer[MAX_PATH];
 139         /* load "My Computer" string */
 140         LoadString(hInst, IDS_MY_COMPUTER, buffer, sizeof(buffer)/sizeof(TCHAR));
 141
 142         g_pChildWnd = pChildWnd = HeapAlloc(GetProcessHeap(), 0, sizeof(ChildWnd));
 143         if (!pChildWnd) return 0;
 144         _tcsncpy(pChildWnd->szPath, buffer, MAX_PATH);
 145         pChildWnd->nSplitPos = 250;
 146         pChildWnd->hWnd = hWnd;
 147         pChildWnd->hTreeWnd = CreateTreeView(hWnd, pChildWnd->szPath, TREE_WINDOW);
 148         pChildWnd->hListWnd = CreateListView(hWnd, LIST_WINDOW/*, pChildWnd->szPath*/);
 149         SetFocus(pChildWnd->hTreeWnd);
 150         break;
 151     }
 152     case WM_COMMAND:
 153         if (!_CmdWndProc(hWnd, message, wParam, lParam)) {
 154             goto def;
 155         }
 156         break;
 157     case WM_PAINT:
 158         OnPaint(hWnd);
 159         return 0;
 160     case WM_SETCURSOR:
 161         if (LOWORD(lParam) == HTCLIENT) {
 162             POINT pt;
 163             GetCursorPos(&pt);
 164             ScreenToClient(hWnd, &pt);
 165             if (pt.x>=pChildWnd->nSplitPos-SPLIT_WIDTH/2 && pt.x<pChildWnd->nSplitPos+SPLIT_WIDTH/2+1) {
 166                 SetCursor(LoadCursor(0, IDC_SIZEWE));
 167                 return TRUE;
 168             }
 169         }
 170         goto def;
 171     case WM_DESTROY:
 172         HeapFree(GetProcessHeap(), 0, pChildWnd);
 173         pChildWnd = NULL;
 174         PostQuitMessage(0);
 175         break;
 176     case WM_LBUTTONDOWN: {
 177             RECT rt;
 178             POINTS pt;
 179             pt = MAKEPOINTS(lParam);
 180             GetClientRect(hWnd, &rt);
 181             if (pt.x>=pChildWnd->nSplitPos-SPLIT_WIDTH/2 && pt.x<pChildWnd->nSplitPos+SPLIT_WIDTH/2+1) {
 182                 last_split = pChildWnd->nSplitPos;
 183                 draw_splitbar(hWnd, last_split);
 184                 SetCapture(hWnd);
 185             }
 186             break;
 187         }
 188
 189     case WM_LBUTTONUP:
 190         if (GetCapture() == hWnd) {
 191             RECT rt;
 192             POINTS pt;
 193             pt = MAKEPOINTS(lParam);
 194             GetClientRect(hWnd, &rt);
 195             pt.x = min(max(pt.x, SPLIT_MIN), rt.right - SPLIT_MIN);
 196             draw_splitbar(hWnd, last_split);
 197             last_split = -1;
 198             pChildWnd->nSplitPos = pt.x;
 199             ResizeWnd(pChildWnd, rt.right, rt.bottom);
 200             ReleaseCapture();
 201         }
 202         break;
 203
 204     case WM_CAPTURECHANGED:
 205         if (GetCapture()==hWnd && last_split>=0)
 206             draw_splitbar(hWnd, last_split);
 207         break;
 208
 209     case WM_KEYDOWN:
 210         if (wParam == VK_ESCAPE)
 211             if (GetCapture() == hWnd) {
 212                 RECT rt;
 213                 draw_splitbar(hWnd, last_split);
 214                 GetClientRect(hWnd, &rt);
 215                 ResizeWnd(pChildWnd, rt.right, rt.bottom);
 216                 last_split = -1;
 217                 ReleaseCapture();
 218                 SetCursor(LoadCursor(0, IDC_ARROW));
 219             }
 220         break;
 221
 222     case WM_MOUSEMOVE:
 223         if (GetCapture() == hWnd) {
 224             HDC hdc;
 225             RECT rt;
 226             HGDIOBJ OldObj;
 227             POINTS pt;
 228             if(!SizingPattern)
 229             {
 230               const DWORD Pattern[4] = {0x5555AAAA, 0x5555AAAA, 0x5555AAAA, 0x5555AAAA};
 231               SizingPattern = CreateBitmap(8, 8, 1, 1, Pattern);
 232             }
 233             if(!SizingBrush)
 234             {
 235               SizingBrush = CreatePatternBrush(SizingPattern);
 236             }
 237
 238             pt = MAKEPOINTS(lParam);
 239             GetClientRect(hWnd, &rt);
 240             pt.x = min(max(pt.x, SPLIT_MIN), rt.right - SPLIT_MIN);
 241             if(last_split != pt.x)
 242             {
 243               rt.left = last_split-SPLIT_WIDTH/2;
 244               rt.right = last_split+SPLIT_WIDTH/2+1;
 245               hdc = GetDC(hWnd);
 246               OldObj = SelectObject(hdc, SizingBrush);
 247               PatBlt(hdc, rt.left, rt.top, rt.right - rt.left, rt.bottom - rt.top, PATINVERT);
 248               last_split = pt.x;
 249               rt.left = pt.x-SPLIT_WIDTH/2;
 250               rt.right = pt.x+SPLIT_WIDTH/2+1;
 251               PatBlt(hdc, rt.left, rt.top, rt.right - rt.left, rt.bottom - rt.top, PATINVERT);
 252               SelectObject(hdc, OldObj);
 253               ReleaseDC(hWnd, hdc);
 254             }
 255         }
 256         break;
 257
 258     case WM_SETFOCUS:
 259         if (pChildWnd != NULL) {
 260             SetFocus(pChildWnd->nFocusPanel? pChildWnd->hListWnd: pChildWnd->hTreeWnd);
 261         }
 262         break;
 263
 264     case WM_TIMER:
 265         break;
 266
 267     case WM_NOTIFY:
 268         if ((int)wParam == TREE_WINDOW) {
 269             switch (((LPNMHDR)lParam)->code) {
 270             case TVN_ITEMEXPANDING:
 271                 return !OnTreeExpanding(pChildWnd->hTreeWnd, (NMTREEVIEW*)lParam);
 272             case TVN_SELCHANGED: {
 273                     LPCTSTR keyPath, rootName;
 274                     LPTSTR fullPath;
 275                     HKEY hRootKey;
 276
 277                     keyPath = GetItemPath(pChildWnd->hTreeWnd, ((NMTREEVIEW*)lParam)->itemNew.hItem, &hRootKey);
 278                     if(!hRootKey)
 279                     {
 280                       RefreshListView(pChildWnd->hListWnd, 0, NULL);
 281                     }
 282                     if (keyPath) {
 283                         RefreshListView(pChildWnd->hListWnd, hRootKey, keyPath);
 284                         rootName = get_root_key_name(hRootKey);
 285                         fullPath = HeapAlloc(GetProcessHeap(), 0, (_tcslen(rootName) + 1 + _tcslen(keyPath) + 1) * sizeof(TCHAR));
 286                         if (fullPath) {
 287                             _stprintf(fullPath, _T("%s\\%s"), rootName, keyPath);
 288                             SendMessage(hStatusBar, SB_SETTEXT, 0, (LPARAM)fullPath);
 289                             HeapFree(GetProcessHeap(), 0, fullPath);
 290                         }
 291                     }
 292                 }
 293                 break;
 294             case NM_SETFOCUS:
 295                 pChildWnd->nFocusPanel = 1;
 296                 break;
 297             default:
 298                 goto def;
 299             }
 300         } else
 301         {
 302             if ((int)wParam == LIST_WINDOW)
 303             {
 304                 switch (((LPNMHDR)lParam)->code) {
 305                   case NM_SETFOCUS:
 306                         pChildWnd->nFocusPanel = 0;
 307                         break;
 308                   default:
 309                         if(ListWndNotifyProc(pChildWnd->hListWnd, wParam, lParam, &Result))
 310                         {
 311                                 return Result;
 312                         }
 313                         break;
 314                 }
 315             }
 316         }
 317         break;
 318
 319     case WM_CONTEXTMENU:
 320     {
 321       POINTS pt;
 322       if((HWND)wParam == pChildWnd->hListWnd)
 323       {
 324         int i, cnt;
 325         BOOL IsDefault;
 326         pt = MAKEPOINTS(lParam);
 327         cnt = ListView_GetSelectedCount(pChildWnd->hListWnd);
 328         i = ListView_GetNextItem(pChildWnd->hListWnd, -1, LVNI_FOCUSED | LVNI_SELECTED);
 329         if(i == -1)
 330         {
 331           TrackPopupMenu(GetSubMenu(hPopupMenus, PM_NEW), TPM_RIGHTBUTTON, pt.x, pt.y, 0, hFrameWnd, NULL);
 332         }
 333         else
 334         {
 335           HMENU mnu = GetSubMenu(hPopupMenus, PM_MODIFYVALUE);
 336           SetMenuDefaultItem(mnu, ID_EDIT_MODIFY, MF_BYCOMMAND);
 337           IsDefault = IsDefaultValue(pChildWnd->hListWnd, i);
 338           if(cnt == 1)
 339             EnableMenuItem(mnu, ID_EDIT_RENAME, MF_BYCOMMAND | (IsDefault ? MF_DISABLED | MF_GRAYED : MF_ENABLED));
 340           else
 341             EnableMenuItem(mnu, ID_EDIT_RENAME, MF_BYCOMMAND | MF_DISABLED | MF_GRAYED);
 342           EnableMenuItem(mnu, ID_EDIT_MODIFY, MF_BYCOMMAND | (cnt == 1 ? MF_ENABLED : MF_DISABLED | MF_GRAYED));
 343           EnableMenuItem(mnu, ID_EDIT_MODIFY_BIN, MF_BYCOMMAND | (cnt == 1 ? MF_ENABLED : MF_DISABLED | MF_GRAYED));
 344
 345           TrackPopupMenu(mnu, TPM_RIGHTBUTTON, pt.x, pt.y, 0, hFrameWnd, NULL);
 346         }
 347       }
 348       break;
 349     }
 350
 351     case WM_SIZE:
 352         if (wParam != SIZE_MINIMIZED && pChildWnd != NULL) {
 353             ResizeWnd(pChildWnd, LOWORD(lParam), HIWORD(lParam));
 354         }
 355         /* fall through */
 356 default: def:
 357         return DefWindowProc(hWnd, message, wParam, lParam);
 358     }
 359     return 0;
 360 }