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1 /////////////////////////////////////////////////////////////////////////////
2 // Name: dialog.cpp
3 // Purpose: wxDialog class
4 // Author: Julian Smart
5 // Modified by:
6 // Created: 01/02/97
7 // RCS-ID: $Id$
8 // Copyright: (c) Julian Smart and Markus Holzem
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 #ifdef __GNUG__
13 #pragma implementation "dialog.h"
14 #endif
15
16 // For compilers that support precompilation, includes "wx.h".
17 #include "wx/wxprec.h"
18
19 #ifdef __BORLANDC__
20 #pragma hdrstop
21 #endif
22
23 #ifndef WX_PRECOMP
24 #include "wx/dialog.h"
25 #include "wx/utils.h"
26 #include "wx/frame.h"
27 #include "wx/app.h"
28 #include "wx/settings.h"
29 #endif
30
31 #include "wx/msw/private.h"
32
33 #if USE_COMMON_DIALOGS
34 #include <commdlg.h>
35 #endif
36
37 #define wxDIALOG_DEFAULT_X 300
38 #define wxDIALOG_DEFAULT_Y 300
39
40 // Lists to keep track of windows, so we can disable/enable them
41 // for modal dialogs
42 wxList wxModalDialogs;
43 wxList wxModelessWindows; // Frames and modeless dialogs
44 extern wxList wxPendingDelete;
45
46 #if !USE_SHARED_LIBRARY
47 IMPLEMENT_DYNAMIC_CLASS(wxDialog, wxPanel)
48
49 BEGIN_EVENT_TABLE(wxDialog, wxPanel)
50 EVT_BUTTON(wxID_OK, wxDialog::OnOK)
51 EVT_BUTTON(wxID_APPLY, wxDialog::OnApply)
52 EVT_BUTTON(wxID_CANCEL, wxDialog::OnCancel)
53 EVT_CHAR_HOOK(wxDialog::OnCharHook)
54 EVT_SYS_COLOUR_CHANGED(wxDialog::OnSysColourChanged)
55 EVT_CLOSE(wxDialog::OnCloseWindow)
56 END_EVENT_TABLE()
57
58 #endif
59
60 long wxDialog::MSWDefWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
61 {
62 return ::CallWindowProc(CASTWNDPROC m_oldWndProc, (HWND) GetHWND(), (UINT) nMsg, (WPARAM) wParam, (LPARAM) lParam);
63 }
64
65 bool wxDialog::MSWProcessMessage(WXMSG* pMsg)
66 {
67 return (::IsDialogMessage((HWND) GetHWND(), (MSG*)pMsg) != 0);
68 }
69
70 bool wxDialog::MSWOnClose(void)
71 {
72 return Close();
73 }
74
75 wxDialog::wxDialog(void)
76 {
77 m_isShown = FALSE;
78 m_modalShowing = FALSE;
79
80 SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
81 SetDefaultBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
82 }
83
84 bool wxDialog::Create(wxWindow *parent, wxWindowID id,
85 const wxString& title,
86 const wxPoint& pos,
87 const wxSize& size,
88 long style,
89 const wxString& name)
90 {
91 SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
92 SetDefaultBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
93 SetName(name);
94
95 if (!parent)
96 wxTopLevelWindows.Append(this);
97
98 // windowFont = wxTheFontList->FindOrCreateFont(11, wxSWISS, wxNORMAL, wxNORMAL);
99
100 if (parent) parent->AddChild(this);
101
102 if ( id == -1 )
103 m_windowId = (int)NewControlId();
104 else
105 m_windowId = id;
106
107 int x = pos.x;
108 int y = pos.y;
109 int width = size.x;
110 int height = size.y;
111
112 if (x < 0) x = wxDIALOG_DEFAULT_X;
113 if (y < 0) y = wxDIALOG_DEFAULT_Y;
114
115 m_windowStyle = style;
116
117 m_isShown = FALSE;
118 m_modalShowing = FALSE;
119
120 if (width < 0)
121 width = 500;
122 if (height < 0)
123 height = 500;
124
125 WXDWORD extendedStyle = MakeExtendedStyle(m_windowStyle);
126 if (m_windowStyle & wxSTAY_ON_TOP)
127 extendedStyle |= WS_EX_TOPMOST;
128
129 // Allows creation of dialogs with & without captions under MSWindows
130 if(style & wxCAPTION){
131 MSWCreate(m_windowId, (wxWindow *)parent, NULL, this, NULL, x, y, width, height, 0, "wxCaptionDialog",
132 extendedStyle);
133 }
134 else{
135 MSWCreate(m_windowId, (wxWindow *)parent, NULL, this, NULL, x, y, width, height, 0, "wxNoCaptionDialog",
136 extendedStyle);
137 }
138
139 SubclassWin(GetHWND());
140
141 SetWindowText((HWND) GetHWND(), (const char *)title);
142 SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
143
144 return TRUE;
145 }
146
147 void wxDialog::SetModal(bool flag)
148 {
149 if ( flag )
150 m_windowStyle |= wxDIALOG_MODAL ;
151 else
152 if ( m_windowStyle & wxDIALOG_MODAL )
153 m_windowStyle -= wxDIALOG_MODAL ;
154
155 wxModelessWindows.DeleteObject(this);
156 if (!flag)
157 wxModelessWindows.Append(this);
158 }
159
160 wxDialog::~wxDialog()
161 {
162 m_isBeingDeleted = TRUE;
163
164 wxTopLevelWindows.DeleteObject(this);
165
166 if (m_modalShowing)
167 {
168 Show(FALSE);
169 // For some reason, wxWindows can activate another task altogether
170 // when a frame is destroyed after a modal dialog has been invoked.
171 // Try to bring the parent to the top.
172 // dfgg: I moved this following line from end of function -
173 // must not call if another window is on top!!
174 // This can often happen with Close() and delayed deleting
175 if (GetParent() && GetParent()->GetHWND())
176 ::BringWindowToTop((HWND) GetParent()->GetHWND());
177 }
178
179 m_modalShowing = FALSE;
180 if ( GetHWND() )
181 ShowWindow((HWND) GetHWND(), SW_HIDE);
182
183 if ( (GetWindowStyleFlag() & wxDIALOG_MODAL) != wxDIALOG_MODAL )
184 wxModelessWindows.DeleteObject(this);
185
186 UnsubclassWin();
187
188 // If this is the last top-level window, exit.
189 if (wxTheApp && (wxTopLevelWindows.Number() == 0))
190 {
191 wxTheApp->SetTopWindow(NULL);
192
193 if (wxTheApp->GetExitOnFrameDelete())
194 {
195 PostQuitMessage(0);
196 }
197 }
198 }
199
200 // By default, pressing escape cancels the dialog
201 void wxDialog::OnCharHook(wxKeyEvent& event)
202 {
203 if (GetHWND())
204 {
205 if (event.m_keyCode == WXK_ESCAPE)
206 {
207 // Behaviour changed in 2.0: we'll send a Cancel message
208 // to the dialog instead of Close.
209 wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
210 cancelEvent.SetEventObject( this );
211 GetEventHandler()->ProcessEvent(cancelEvent);
212
213 return;
214 }
215 }
216 // We didn't process this event.
217 event.Skip();
218 }
219
220 void wxDialog::OnPaint(wxPaintEvent& event)
221 {
222 // No: if you call the default procedure, it makes
223 // the following painting code not work.
224 // wxWindow::OnPaint(event);
225 }
226
227 void wxDialog::Fit(void)
228 {
229 wxWindow::Fit();
230 }
231
232 void wxDialog::Iconize(bool WXUNUSED(iconize))
233 {
234 // Windows dialog boxes can't be iconized
235 }
236
237 bool wxDialog::IsIconized(void) const
238 {
239 return FALSE;
240 }
241
242 void wxDialog::SetSize(int x, int y, int width, int height, int WXUNUSED(sizeFlags))
243 {
244 wxWindow::SetSize(x, y, width, height);
245 }
246
247 void wxDialog::SetClientSize(int width, int height)
248 {
249 HWND hWnd = (HWND) GetHWND();
250 RECT rect;
251 GetClientRect(hWnd, &rect);
252
253 RECT rect2;
254 GetWindowRect(hWnd, &rect2);
255
256 // Find the difference between the entire window (title bar and all)
257 // and the client area; add this to the new client size to move the
258 // window
259 int actual_width = rect2.right - rect2.left - rect.right + width;
260 int actual_height = rect2.bottom - rect2.top - rect.bottom + height;
261
262 MoveWindow(hWnd, rect2.left, rect2.top, actual_width, actual_height, TRUE);
263
264 wxSizeEvent event(wxSize(actual_width, actual_height), m_windowId);
265 event.SetEventObject( this );
266 GetEventHandler()->ProcessEvent(event);
267 }
268
269 void wxDialog::GetPosition(int *x, int *y) const
270 {
271 HWND hWnd = (HWND) GetHWND();
272 RECT rect;
273 GetWindowRect(hWnd, &rect);
274
275 *x = rect.left;
276 *y = rect.top;
277 }
278
279 bool wxDialog::IsShown(void) const
280 {
281 return m_isShown;
282 }
283
284 bool wxDialog::Show(bool show)
285 {
286 m_isShown = show;
287
288 if (show)
289 InitDialog();
290
291 bool modal = ((GetWindowStyleFlag() & wxDIALOG_MODAL) == wxDIALOG_MODAL) ;
292
293 #if WXGARBAGE_COLLECTION_ON /* MATTHEW: GC */
294 if (!modal) {
295 if (show) {
296 if (!wxModelessWindows.Member(this))
297 wxModelessWindows.Append(this);
298 } else
299 wxModelessWindows.DeleteObject(this);
300 }
301 if (show) {
302 if (!wxTopLevelWindows.Member(this))
303 wxTopLevelWindows.Append(this);
304 } else
305 wxTopLevelWindows.DeleteObject(this);
306 #endif
307
308 if (modal)
309 {
310 if (show)
311 {
312 m_hwndOldFocus = (WXHWND)::GetFocus();
313
314 wxList DisabledWindows;
315 if (m_modalShowing)
316 {
317 BringWindowToTop((HWND) GetHWND());
318 return TRUE;
319 }
320
321 m_modalShowing = TRUE;
322 wxNode *node = wxModalDialogs.First();
323 while (node)
324 {
325 wxDialog *box = (wxDialog *)node->Data();
326 if (box != this)
327 ::EnableWindow((HWND) box->GetHWND(), FALSE);
328 node = node->Next();
329 }
330 node = wxModelessWindows.First();
331 while (node)
332 {
333 wxWindow *win = (wxWindow *)node->Data();
334 if (::IsWindowEnabled((HWND) win->GetHWND()))
335 {
336 ::EnableWindow((HWND) win->GetHWND(), FALSE);
337 DisabledWindows.Append(win);
338 }
339 node = node->Next();
340 }
341
342 ShowWindow((HWND) GetHWND(), SW_SHOW);
343 EnableWindow((HWND) GetHWND(), TRUE);
344 BringWindowToTop((HWND) GetHWND());
345
346 if (!wxModalDialogs.Member(this))
347 wxModalDialogs.Append(this);
348
349 MSG msg;
350 // Must test whether this dialog still exists: we may not process
351 // a message before the deletion.
352 while (wxModalDialogs.Member(this) && m_modalShowing && GetMessage(&msg, NULL, 0, 0))
353 {
354 if (m_acceleratorTable.Ok() &&
355 ::TranslateAccelerator((HWND) GetHWND(), (HACCEL) m_acceleratorTable.GetHACCEL(), &msg))
356 {
357 // Have processed the message
358 }
359 else if (!IsDialogMessage((HWND) GetHWND(), &msg))
360 {
361 TranslateMessage(&msg);
362 DispatchMessage(&msg);
363 }
364 if (m_modalShowing && !::PeekMessage(&msg, 0, 0, 0, PM_NOREMOVE))
365 // dfgg: NB MUST test m_modalShowing again as the message loop could have triggered
366 // a Show(FALSE) in the mean time!!!
367 // Without the test, we might delete the dialog before the end of modal showing.
368 {
369 while (wxTheApp->ProcessIdle() && m_modalShowing)
370 {
371 // Keep going until we decide we've done enough
372 }
373 }
374 }
375 // dfgg: now must specifically re-enable all other app windows that we disabled earlier
376 node=DisabledWindows.First();
377 while(node) {
378 wxWindow* win = (wxWindow*) node->Data();
379 HWND hWnd = (HWND) win->GetHWND();
380 if (::IsWindow(hWnd) && (wxModalDialogs.Member(win) || wxModelessWindows.Member(win) ))
381 ::EnableWindow(hWnd,TRUE);
382 node=node->Next();
383 }
384 }
385 else // !show
386 {
387 ::SetFocus((HWND)m_hwndOldFocus);
388
389 wxModalDialogs.DeleteObject(this);
390
391 wxNode *last = wxModalDialogs.Last();
392
393 // If there's still a modal dialog active, we
394 // enable it, else we enable all modeless windows
395 if (last)
396 {
397 wxDialog *box = (wxDialog *)last->Data();
398 HWND hwnd = (HWND) box->GetHWND();
399 if (box->m_winEnabled)
400 EnableWindow(hwnd, TRUE);
401 BringWindowToTop(hwnd);
402 }
403 else
404 {
405 wxNode *node = wxModelessWindows.First();
406 while (node)
407 {
408 wxWindow *win = (wxWindow *)node->Data();
409 HWND hwnd = (HWND) win->GetHWND();
410 // Only enable again if not user-disabled.
411 if (win->IsUserEnabled())
412 EnableWindow(hwnd, TRUE);
413 node = node->Next();
414 }
415 }
416 // Try to highlight the correct window (the parent)
417 HWND hWndParent = 0;
418 if (GetParent())
419 {
420 hWndParent = (HWND) GetParent()->GetHWND();
421 if (hWndParent)
422 ::BringWindowToTop(hWndParent);
423 }
424 ShowWindow((HWND) GetHWND(), SW_HIDE);
425 m_modalShowing = FALSE;
426 }
427 }
428 else // !modal
429 {
430 if (show)
431 {
432 ShowWindow((HWND) GetHWND(), SW_SHOW);
433 BringWindowToTop((HWND) GetHWND());
434 }
435 else
436 {
437 // Try to highlight the correct window (the parent)
438 HWND hWndParent = 0;
439 if (GetParent())
440 {
441 hWndParent = (HWND) GetParent()->GetHWND();
442 if (hWndParent)
443 ::BringWindowToTop(hWndParent);
444 }
445 ShowWindow((HWND) GetHWND(), SW_HIDE);
446 }
447 }
448 return TRUE;
449 }
450
451 void wxDialog::SetTitle(const wxString& title)
452 {
453 SetWindowText((HWND) GetHWND(), (const char *)title);
454 }
455
456 wxString wxDialog::GetTitle(void) const
457 {
458 GetWindowText((HWND) GetHWND(), wxBuffer, 1000);
459 return wxString(wxBuffer);
460 }
461
462 void wxDialog::Centre(int direction)
463 {
464 int x_offset,y_offset ;
465 int display_width, display_height;
466 int width, height, x, y;
467 wxWindow *parent = GetParent();
468 if ((direction & wxCENTER_FRAME) && parent)
469 {
470 parent->GetPosition(&x_offset,&y_offset) ;
471 parent->GetSize(&display_width,&display_height) ;
472 }
473 else
474 {
475 wxDisplaySize(&display_width, &display_height);
476 x_offset = 0 ;
477 y_offset = 0 ;
478 }
479
480 GetSize(&width, &height);
481 GetPosition(&x, &y);
482
483 if (direction & wxHORIZONTAL)
484 x = (int)((display_width - width)/2);
485 if (direction & wxVERTICAL)
486 y = (int)((display_height - height)/2);
487
488 SetSize(x+x_offset, y+y_offset, width, height);
489 }
490
491 // Replacement for Show(TRUE) for modal dialogs - returns return code
492 int wxDialog::ShowModal(void)
493 {
494 m_windowStyle |= wxDIALOG_MODAL;
495 Show(TRUE);
496 return GetReturnCode();
497 }
498
499 void wxDialog::EndModal(int retCode)
500 {
501 SetReturnCode(retCode);
502 Show(FALSE);
503 }
504
505 // Define for each class of dialog and control
506 WXHBRUSH wxDialog::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
507 WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
508 {
509 #if CTL3D
510 HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
511 return (WXHBRUSH) hbrush;
512 #else
513 return 0;
514 #endif
515 }
516
517 // Standard buttons
518 void wxDialog::OnOK(wxCommandEvent& event)
519 {
520 if ( Validate() && TransferDataFromWindow() )
521 {
522 if ( IsModal() )
523 EndModal(wxID_OK);
524 else
525 {
526 SetReturnCode(wxID_OK);
527 this->Show(FALSE);
528 }
529 }
530 }
531
532 void wxDialog::OnApply(wxCommandEvent& event)
533 {
534 if (Validate())
535 TransferDataFromWindow();
536 // TODO probably need to disable the Apply button until things change again
537 }
538
539 void wxDialog::OnCancel(wxCommandEvent& event)
540 {
541 if ( IsModal() )
542 EndModal(wxID_CANCEL);
543 else
544 {
545 SetReturnCode(wxID_CANCEL);
546 this->Show(FALSE);
547 }
548 }
549
550 bool wxDialog::OnClose(void)
551 {
552 // Behaviour changed in 2.0: we'll send a Cancel message by default,
553 // which may close the dialog.
554 // Check for looping if the Cancel event handler calls Close()
555
556 static wxList closing;
557
558 if ( closing.Member(this) )
559 return FALSE;
560
561 closing.Append(this);
562
563 wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
564 cancelEvent.SetEventObject( this );
565 GetEventHandler()->ProcessEvent(cancelEvent);
566
567 closing.DeleteObject(this);
568
569 return FALSE;
570 }
571
572 void wxDialog::OnCloseWindow(wxCloseEvent& event)
573 {
574 // Compatibility
575 if ( GetEventHandler()->OnClose() || event.GetForce())
576 {
577 this->Destroy();
578 }
579 }
580
581 // Destroy the window (delayed, if a managed window)
582 bool wxDialog::Destroy(void)
583 {
584 if (!wxPendingDelete.Member(this))
585 wxPendingDelete.Append(this);
586 return TRUE;
587 }
588
589 void wxDialog::OnSysColourChanged(wxSysColourChangedEvent& event)
590 {
591 #if CTL3D
592 Ctl3dColorChange();
593 #else
594 SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
595 SetDefaultBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
596 Refresh();
597 #endif
598 }
599
600 long wxDialog::MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
601 {
602 return wxWindow::MSWWindowProc(message, wParam, lParam);
603 }
604