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     ChildWnd* pChildWnd = g_pChildWnd;
 105     switch (LOWORD(wParam)) {
 106         /* Parse the menu selections: */
 107     case ID_REGISTRY_EXIT:
 108         DestroyWindow(hWnd);
 109         break;
 110     case ID_VIEW_REFRESH:
 111         /* TODO */
 112         break;
 113     case ID_SWITCH_PANELS:
 114         pChildWnd->nFocusPanel = !pChildWnd->nFocusPanel;
 115         SetFocus(pChildWnd->nFocusPanel? pChildWnd->hListWnd: pChildWnd->hTreeWnd);
 116         break;
 117     default:
 118         return FALSE;
 119     }
 120     return TRUE;
 121 }
 122
 123 /*******************************************************************************
 124  *
 125  *  FUNCTION: ChildWndProc(HWND, unsigned, WORD, LONG)
 126  *
 127  *  PURPOSE:  Processes messages for the child windows.
 128  *
 129  *  WM_COMMAND  - process the application menu
 130  *  WM_PAINT    - Paint the main window
 131  *  WM_DESTROY  - post a quit message and return
 132  *
 133  */
 134 INT_PTR CALLBACK
 135 ChildWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 136 {
 137     static short last_split;
 138     BOOL Result;
 139     ChildWnd* pChildWnd = g_pChildWnd;
 140
 141     switch (message) {
 142     case WM_CREATE:
 143     {
 144         TCHAR buffer[MAX_PATH];
 145         /* load "My Computer" string */
 146         LoadString(hInst, IDS_MY_COMPUTER, buffer, sizeof(buffer)/sizeof(TCHAR));
 147
 148         g_pChildWnd = pChildWnd = HeapAlloc(GetProcessHeap(), 0, sizeof(ChildWnd));
 149         if (!pChildWnd) return 0;
 150         _tcsncpy(pChildWnd->szPath, buffer, MAX_PATH);
 151         pChildWnd->nSplitPos = 250;
 152         pChildWnd->hWnd = hWnd;
 153         pChildWnd->hTreeWnd = CreateTreeView(hWnd, pChildWnd->szPath, TREE_WINDOW);
 154         pChildWnd->hListWnd = CreateListView(hWnd, LIST_WINDOW/*, pChildWnd->szPath*/);
 155         SetFocus(pChildWnd->hTreeWnd);
 156         break;
 157     }
 158     case WM_COMMAND:
 159         if (!_CmdWndProc(hWnd, message, wParam, lParam)) {
 160             goto def;
 161         }
 162         break;
 163     case WM_PAINT:
 164         OnPaint(hWnd);
 165         return 0;
 166     case WM_SETCURSOR:
 167         if (LOWORD(lParam) == HTCLIENT) {
 168             POINT pt;
 169             GetCursorPos(&pt);
 170             ScreenToClient(hWnd, &pt);
 171             if (pt.x>=pChildWnd->nSplitPos-SPLIT_WIDTH/2 && pt.x<pChildWnd->nSplitPos+SPLIT_WIDTH/2+1) {
 172                 SetCursor(LoadCursor(0, IDC_SIZEWE));
 173                 return TRUE;
 174             }
 175         }
 176         goto def;
 177     case WM_DESTROY:
 178         HeapFree(GetProcessHeap(), 0, pChildWnd);
 179         pChildWnd = NULL;
 180         PostQuitMessage(0);
 181         break;
 182     case WM_LBUTTONDOWN: {
 183             RECT rt;
 184             POINTS pt;
 185             pt = MAKEPOINTS(lParam);
 186             GetClientRect(hWnd, &rt);
 187             if (pt.x>=pChildWnd->nSplitPos-SPLIT_WIDTH/2 && pt.x<pChildWnd->nSplitPos+SPLIT_WIDTH/2+1) {
 188                 last_split = pChildWnd->nSplitPos;
 189                 draw_splitbar(hWnd, last_split);
 190                 SetCapture(hWnd);
 191             }
 192             break;
 193         }
 194
 195     case WM_LBUTTONUP:
 196         if (GetCapture() == hWnd) {
 197             RECT rt;
 198             POINTS pt;
 199             pt = MAKEPOINTS(lParam);
 200             GetClientRect(hWnd, &rt);
 201             pt.x = min(max(pt.x, SPLIT_MIN), rt.right - SPLIT_MIN);
 202             draw_splitbar(hWnd, last_split);
 203             last_split = -1;
 204             pChildWnd->nSplitPos = pt.x;
 205             ResizeWnd(pChildWnd, rt.right, rt.bottom);
 206             ReleaseCapture();
 207         }
 208         break;
 209
 210     case WM_CAPTURECHANGED:
 211         if (GetCapture()==hWnd && last_split>=0)
 212             draw_splitbar(hWnd, last_split);
 213         break;
 214
 215     case WM_KEYDOWN:
 216         if (wParam == VK_ESCAPE)
 217             if (GetCapture() == hWnd) {
 218                 RECT rt;
 219                 draw_splitbar(hWnd, last_split);
 220                 GetClientRect(hWnd, &rt);
 221                 ResizeWnd(pChildWnd, rt.right, rt.bottom);
 222                 last_split = -1;
 223                 ReleaseCapture();
 224                 SetCursor(LoadCursor(0, IDC_ARROW));
 225             }
 226         break;
 227
 228     case WM_MOUSEMOVE:
 229         if (GetCapture() == hWnd) {
 230             HDC hdc;
 231             RECT rt;
 232             HGDIOBJ OldObj;
 233             POINTS pt;
 234             if(!SizingPattern)
 235             {
 236               const DWORD Pattern[4] = {0x5555AAAA, 0x5555AAAA, 0x5555AAAA, 0x5555AAAA};
 237               SizingPattern = CreateBitmap(8, 8, 1, 1, Pattern);
 238             }
 239             if(!SizingBrush)
 240             {
 241               SizingBrush = CreatePatternBrush(SizingPattern);
 242             }
 243
 244             pt = MAKEPOINTS(lParam);
 245             GetClientRect(hWnd, &rt);
 246             pt.x = min(max(pt.x, SPLIT_MIN), rt.right - SPLIT_MIN);
 247             if(last_split != pt.x)
 248             {
 249               rt.left = last_split-SPLIT_WIDTH/2;
 250               rt.right = last_split+SPLIT_WIDTH/2+1;
 251               hdc = GetDC(hWnd);
 252               OldObj = SelectObject(hdc, SizingBrush);
 253               PatBlt(hdc, rt.left, rt.top, rt.right - rt.left, rt.bottom - rt.top, PATINVERT);
 254               last_split = pt.x;
 255               rt.left = pt.x-SPLIT_WIDTH/2;
 256               rt.right = pt.x+SPLIT_WIDTH/2+1;
 257               PatBlt(hdc, rt.left, rt.top, rt.right - rt.left, rt.bottom - rt.top, PATINVERT);
 258               SelectObject(hdc, OldObj);
 259               ReleaseDC(hWnd, hdc);
 260             }
 261         }
 262         break;
 263
 264     case WM_SETFOCUS:
 265         if (pChildWnd != NULL) {
 266             SetFocus(pChildWnd->nFocusPanel? pChildWnd->hListWnd: pChildWnd->hTreeWnd);
 267         }
 268         break;
 269
 270     case WM_TIMER:
 271         break;
 272
 273     case WM_NOTIFY:
 274         if ((int)wParam == TREE_WINDOW) {
 275             switch (((LPNMHDR)lParam)->code) {
 276             case TVN_ITEMEXPANDING:
 277                 return !OnTreeExpanding(pChildWnd->hTreeWnd, (NMTREEVIEW*)lParam);
 278             case TVN_SELCHANGED: {
 279                     LPCTSTR keyPath, rootName;
 280                     LPTSTR fullPath;
 281                     HKEY hRootKey;
 282
 283                     keyPath = GetItemPath(pChildWnd->hTreeWnd, ((NMTREEVIEW*)lParam)->itemNew.hItem, &hRootKey);
 284                     if (keyPath) {
 285                         RefreshListView(pChildWnd->hListWnd, hRootKey, keyPath);
 286                         rootName = get_root_key_name(hRootKey);
 287                         fullPath = HeapAlloc(GetProcessHeap(), 0, (_tcslen(rootName) + 1 + _tcslen(keyPath) + 1) * sizeof(TCHAR));
 288                         if (fullPath) {
 289                             _stprintf(fullPath, _T("%s\\%s"), rootName, keyPath);
 290                             SendMessage(hStatusBar, SB_SETTEXT, 0, (LPARAM)fullPath);
 291                             HeapFree(GetProcessHeap(), 0, fullPath);
 292                         }
 293                     }
 294                 }
 295                 break;
 296             case NM_SETFOCUS:
 297                 pChildWnd->nFocusPanel = 0;
 298                 break;
 299             default:
 300                 return 0;
 301             }
 302         } else
 303         {
 304             if ((int)wParam == LIST_WINDOW)
 305             {
 306                 switch (((LPNMHDR)lParam)->code) {
 307                   case NM_SETFOCUS:
 308                         pChildWnd->nFocusPanel = 1;
 309                         break;
 310                   default:
 311                         if(!ListWndNotifyProc(pChildWnd->hListWnd, wParam, lParam, &Result))
 312                         {
 313                                 goto def;
 314                         }
 315                         break;
 316                 }
 317             }
 318         }
 319         break;
 320
 321     case WM_CONTEXTMENU:
 322     {
 323       POINTS pt;
 324       if((HWND)wParam == pChildWnd->hListWnd)
 325       {
 326         int i, cnt;
 327         BOOL IsDefault;
 328         pt = MAKEPOINTS(lParam);
 329         cnt = ListView_GetSelectedCount(pChildWnd->hListWnd);
 330         i = ListView_GetNextItem(pChildWnd->hListWnd, -1, LVNI_FOCUSED | LVNI_SELECTED);
 331         if(i == -1)
 332         {
 333           TrackPopupMenu(GetSubMenu(hPopupMenus, PM_NEW), TPM_RIGHTBUTTON, pt.x, pt.y, 0, hFrameWnd, NULL);
 334         }
 335         else
 336         {
 337           HMENU mnu = GetSubMenu(hPopupMenus, PM_MODIFYVALUE);
 338           SetMenuDefaultItem(mnu, ID_EDIT_MODIFY, MF_BYCOMMAND);
 339           IsDefault = IsDefaultValue(pChildWnd->hListWnd, i);
 340           if(cnt == 1)
 341             EnableMenuItem(mnu, ID_EDIT_RENAME, MF_BYCOMMAND | (IsDefault ? MF_DISABLED | MF_GRAYED : MF_ENABLED));
 342           else
 343             EnableMenuItem(mnu, ID_EDIT_RENAME, MF_BYCOMMAND | MF_DISABLED | MF_GRAYED);
 344           EnableMenuItem(mnu, ID_EDIT_MODIFY, MF_BYCOMMAND | (cnt == 1 ? MF_ENABLED : MF_DISABLED | MF_GRAYED));
 345           EnableMenuItem(mnu, ID_EDIT_MODIFY_BIN, MF_BYCOMMAND | (cnt == 1 ? MF_ENABLED : MF_DISABLED | MF_GRAYED));
 346
 347           TrackPopupMenu(mnu, TPM_RIGHTBUTTON, pt.x, pt.y, 0, hFrameWnd, NULL);
 348         }
 349       }
 350       break;
 351     }
 352
 353     case WM_SIZE:
 354         if (wParam != SIZE_MINIMIZED && pChildWnd != NULL) {
 355             ResizeWnd(pChildWnd, LOWORD(lParam), HIWORD(lParam));
 356         }
 357         /* fall through */
 358 default: def:
 359         return DefWindowProc(hWnd, message, wParam, lParam);
 360     }
 361     return 0;
 362 }