windows/defdlg.c

   1 /*
   2  * Default dialog procedure
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  */
   6
   7 static char Copyright[] = "Copyright  Alexandre Julliard, 1993";
   8
   9 #include "windows.h"
  10 #include "dialog.h"
  11 #include "win.h"
  12 #include "stddebug.h"
  13 /* #define DEBUG_DIALOG /* */
  14 /* #undef  DEBUG_DIALOG /* */
  15 #include "debug.h"
  16
  17
  18 extern HWND DIALOG_GetFirstTabItem( HWND hwndDlg );  /* windows/dialog.c */
  19
  20
  21 /***********************************************************************
  22  *           DEFDLG_SetFocus
  23  *
  24  * Set the focus to a control of the dialog, selecting the text if
  25  * the control is an edit dialog.
  26  */
  27 static void DEFDLG_SetFocus( HWND hwndDlg, HWND hwndCtrl )
  28 {
  29     int dlgCode;
  30     HWND hwndPrev = GetFocus();
  31
  32     if (IsChild( hwndDlg, hwndPrev ))
  33     {
  34         if (SendMessage( hwndPrev, WM_GETDLGCODE, 0, 0 ) & DLGC_HASSETSEL)
  35             SendMessage( hwndPrev, EM_SETSEL, TRUE, MAKELONG( -1, 0 ) );
  36     }
  37     if (SendMessage( hwndCtrl, WM_GETDLGCODE, 0, 0 ) & DLGC_HASSETSEL)
  38         SendMessage( hwndCtrl, EM_SETSEL, FALSE, MAKELONG( 0, -1 ) );
  39     SetFocus( hwndCtrl );
  40 }
  41
  42
  43 /***********************************************************************
  44  *           DEFDLG_SaveFocus
  45  */
  46 static BOOL DEFDLG_SaveFocus( HWND hwnd, DIALOGINFO *infoPtr )
  47 {
  48     HWND hwndFocus = GetFocus();
  49
  50     if (!hwndFocus || !IsChild( hwnd, hwndFocus )) return FALSE;
  51     if (!infoPtr->hwndFocus) return FALSE;  /* Already saved */
  52     infoPtr->hwndFocus = hwndFocus;
  53       /* Remove default button */
  54     return TRUE;
  55 }
  56
  57
  58 /***********************************************************************
  59  *           DEFDLG_RestoreFocus
  60  */
  61 static BOOL DEFDLG_RestoreFocus( HWND hwnd, DIALOGINFO *infoPtr )
  62 {
  63     if (!infoPtr->hwndFocus || IsIconic(hwnd)) return FALSE;
  64     if (!IsWindow( infoPtr->hwndFocus )) return FALSE;
  65     DEFDLG_SetFocus( hwnd, infoPtr->hwndFocus );
  66     infoPtr->hwndFocus = 0;
  67     return TRUE;
  68 }
  69
  70
  71 /***********************************************************************
  72  *           DEFDLG_FindDefButton
  73  *
  74  * Find the current default push-button.
  75  */
  76 static HWND DEFDLG_FindDefButton( HWND hwndDlg )
  77 {
  78     HWND hwndChild = GetWindow( hwndDlg, GW_CHILD );
  79     while (hwndChild)
  80     {
  81         if (SendMessage( hwndChild, WM_GETDLGCODE, 0, 0 ) & DLGC_DEFPUSHBUTTON)
  82             break;
  83         hwndChild = GetWindow( hwndChild, GW_HWNDNEXT );
  84     }
  85     return hwndChild;
  86 }
  87
  88
  89 /***********************************************************************
  90  *           DEFDLG_SetDefButton
  91  *
  92  * Set the new default button to be hwndNew.
  93  */
  94 static BOOL DEFDLG_SetDefButton( HWND hwndDlg, DIALOGINFO *dlgInfo,
  95                                  HWND hwndNew )
  96 {
  97     if (hwndNew &&
  98         !(SendMessage( hwndNew, WM_GETDLGCODE, 0, 0 ) & DLGC_UNDEFPUSHBUTTON))
  99         return FALSE;  /* Destination is not a push button */
 100
 101     if (dlgInfo->msgResult)  /* There's already a default pushbutton */
 102     {
 103         HWND hwndOld = GetDlgItem( hwndDlg, dlgInfo->msgResult );
 104         if (SendMessage( hwndOld, WM_GETDLGCODE, 0, 0 ) & DLGC_DEFPUSHBUTTON)
 105             SendMessage( hwndOld, BM_SETSTYLE, BS_PUSHBUTTON, TRUE );
 106     }
 107     if (hwndNew)
 108     {
 109         SendMessage( hwndNew, BM_SETSTYLE, BS_DEFPUSHBUTTON, TRUE );
 110         dlgInfo->msgResult = GetDlgCtrlID( hwndNew );
 111     }
 112     else dlgInfo->msgResult = 0;
 113     return TRUE;
 114 }
 115
 116
 117 /***********************************************************************
 118  *           DefDlgProc   (USER.308)
 119  */
 120 LONG DefDlgProc( HWND hwnd, WORD msg, WORD wParam, LONG lParam )
 121 {
 122     DIALOGINFO * dlgInfo;
 123     BOOL result = FALSE;
 124     WND * wndPtr = WIN_FindWndPtr( hwnd );
 125
 126     if (!wndPtr) return 0;
 127     dlgInfo = (DIALOGINFO *)&wndPtr->wExtra;
 128
 129     dprintf_dialog(stddeb, "DefDlgProc: %d %04x %d %08x\n",
 130                    hwnd, msg, wParam, lParam );
 131
 132     dlgInfo->msgResult = 0;
 133     if (dlgInfo->dlgProc)
 134     {
 135           /* Call dialog procedure */
 136         result = (BOOL)CallWindowProc( dlgInfo->dlgProc, hwnd,
 137                                        msg, wParam, lParam );
 138
 139           /* Check if window destroyed by dialog procedure */
 140         wndPtr = WIN_FindWndPtr( hwnd );
 141         if (!wndPtr) return result;
 142     }
 143
 144     if (!result) switch(msg)
 145     {
 146         case WM_INITDIALOG:
 147             break;
 148
 149         case WM_ERASEBKGND:
 150             FillWindow( hwnd, hwnd, (HDC)wParam, (HBRUSH)CTLCOLOR_DLG );
 151             return TRUE;
 152
 153         case WM_NCDESTROY:
 154
 155               /* Free dialog heap (if created) */
 156             if (dlgInfo->hDialogHeap)
 157             {
 158                 GlobalUnlock(dlgInfo->hDialogHeap);
 159                 GlobalFree(dlgInfo->hDialogHeap);
 160                 dlgInfo->hDialogHeap = 0;
 161             }
 162
 163               /* Delete font */
 164             if (dlgInfo->hUserFont)
 165             {
 166                 DeleteObject( dlgInfo->hUserFont );
 167                 dlgInfo->hUserFont = 0;
 168             }
 169
 170               /* Delete menu */
 171             if (dlgInfo->hMenu)
 172             {
 173                 DestroyMenu( dlgInfo->hMenu );
 174                 dlgInfo->hMenu = 0;
 175             }
 176
 177               /* Window clean-up */
 178             DefWindowProc( hwnd, msg, wParam, lParam );
 179             break;
 180
 181         case WM_SHOWWINDOW:
 182             if (!wParam) DEFDLG_SaveFocus( hwnd, dlgInfo );
 183             return DefWindowProc( hwnd, msg, wParam, lParam );
 184
 185         case WM_ACTIVATE:
 186             if (wParam) DEFDLG_RestoreFocus( hwnd, dlgInfo );
 187             else DEFDLG_SaveFocus( hwnd, dlgInfo );
 188             break;
 189
 190         case WM_SETFOCUS:
 191             DEFDLG_RestoreFocus( hwnd, dlgInfo );
 192             break;
 193
 194         case DM_SETDEFID:
 195             if (dlgInfo->fEnd) return TRUE;
 196             DEFDLG_SetDefButton( hwnd, dlgInfo,
 197                                  wParam ? GetDlgItem( hwnd, wParam ) : 0 );
 198             return TRUE;
 199
 200         case DM_GETDEFID:
 201             if (dlgInfo->fEnd || !dlgInfo->msgResult) return 0;
 202             return MAKELONG( dlgInfo->msgResult, DC_HASDEFID );
 203
 204         case WM_NEXTDLGCTL:
 205             {
 206                 HWND hwndDest = wParam;
 207                 if (!lParam)
 208                 {
 209                     HWND hwndPrev = GetFocus();
 210                     if (!hwndPrev)  /* Set focus to the first item */
 211                         hwndDest = DIALOG_GetFirstTabItem( hwnd );
 212                     else
 213                         hwndDest = GetNextDlgTabItem( hwnd, hwndPrev, wParam );
 214                 }
 215                 if (hwndDest) DEFDLG_SetFocus( hwnd, hwndDest );
 216                 DEFDLG_SetDefButton( hwnd, dlgInfo, hwndDest );
 217             }
 218             break;
 219
 220         default:
 221             return DefWindowProc( hwnd, msg, wParam, lParam );
 222     }
 223
 224     return result;
 225 }