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1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/msw/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
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 // ============================================================================
13 // declarations
14 // ============================================================================
15
16 // ----------------------------------------------------------------------------
17 // headers
18 // ----------------------------------------------------------------------------
19
20 // For compilers that support precompilation, includes "wx.h".
21 #include "wx/wxprec.h"
22
23 #ifdef __BORLANDC__
24 #pragma hdrstop
25 #endif
26
27 #include "wx/dialog.h"
28
29 #ifndef WX_PRECOMP
30 #include "wx/msw/wrapcdlg.h"
31 #include "wx/utils.h"
32 #include "wx/frame.h"
33 #include "wx/app.h"
34 #include "wx/button.h"
35 #include "wx/settings.h"
36 #include "wx/intl.h"
37 #include "wx/log.h"
38 #include "wx/toolbar.h"
39 #endif
40
41 #include "wx/msw/private.h"
42 #include "wx/evtloop.h"
43 #include "wx/ptr_scpd.h"
44
45 #if defined(__SMARTPHONE__) && defined(__WXWINCE__)
46 #include "wx/msw/wince/resources.h"
47 #endif // __SMARTPHONE__ && __WXWINCE__
48
49 // ----------------------------------------------------------------------------
50 // wxWin macros
51 // ----------------------------------------------------------------------------
52
53 #if wxUSE_EXTENDED_RTTI
54 WX_DEFINE_FLAGS( wxDialogStyle )
55
56 wxBEGIN_FLAGS( wxDialogStyle )
57 // new style border flags, we put them first to
58 // use them for streaming out
59 wxFLAGS_MEMBER(wxBORDER_SIMPLE)
60 wxFLAGS_MEMBER(wxBORDER_SUNKEN)
61 wxFLAGS_MEMBER(wxBORDER_DOUBLE)
62 wxFLAGS_MEMBER(wxBORDER_RAISED)
63 wxFLAGS_MEMBER(wxBORDER_STATIC)
64 wxFLAGS_MEMBER(wxBORDER_NONE)
65
66 // old style border flags
67 wxFLAGS_MEMBER(wxSIMPLE_BORDER)
68 wxFLAGS_MEMBER(wxSUNKEN_BORDER)
69 wxFLAGS_MEMBER(wxDOUBLE_BORDER)
70 wxFLAGS_MEMBER(wxRAISED_BORDER)
71 wxFLAGS_MEMBER(wxSTATIC_BORDER)
72 wxFLAGS_MEMBER(wxNO_BORDER)
73
74 // standard window styles
75 wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
76 wxFLAGS_MEMBER(wxCLIP_CHILDREN)
77
78 // dialog styles
79 wxFLAGS_MEMBER(wxWS_EX_VALIDATE_RECURSIVELY)
80 wxFLAGS_MEMBER(wxSTAY_ON_TOP)
81 wxFLAGS_MEMBER(wxCAPTION)
82 #if WXWIN_COMPATIBILITY_2_6
83 wxFLAGS_MEMBER(wxTHICK_FRAME)
84 #endif // WXWIN_COMPATIBILITY_2_6
85 wxFLAGS_MEMBER(wxSYSTEM_MENU)
86 wxFLAGS_MEMBER(wxRESIZE_BORDER)
87 #if WXWIN_COMPATIBILITY_2_6
88 wxFLAGS_MEMBER(wxRESIZE_BOX)
89 #endif // WXWIN_COMPATIBILITY_2_6
90 wxFLAGS_MEMBER(wxCLOSE_BOX)
91 wxFLAGS_MEMBER(wxMAXIMIZE_BOX)
92 wxFLAGS_MEMBER(wxMINIMIZE_BOX)
93 wxEND_FLAGS( wxDialogStyle )
94
95 IMPLEMENT_DYNAMIC_CLASS_XTI(wxDialog, wxTopLevelWindow,"wx/dialog.h")
96
97 wxBEGIN_PROPERTIES_TABLE(wxDialog)
98 wxPROPERTY( Title, wxString, SetTitle, GetTitle, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
99 wxPROPERTY_FLAGS( WindowStyle , wxDialogStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
100 wxEND_PROPERTIES_TABLE()
101
102 wxBEGIN_HANDLERS_TABLE(wxDialog)
103 wxEND_HANDLERS_TABLE()
104
105 wxCONSTRUCTOR_6( wxDialog , wxWindow* , Parent , wxWindowID , Id , wxString , Title , wxPoint , Position , wxSize , Size , long , WindowStyle)
106
107 #else
108 IMPLEMENT_DYNAMIC_CLASS(wxDialog, wxTopLevelWindow)
109 #endif
110
111 // ----------------------------------------------------------------------------
112 // wxDialogModalData
113 // ----------------------------------------------------------------------------
114
115 // this is simply a container for any data we need to implement modality which
116 // allows us to avoid changing wxDialog each time the implementation changes
117 class wxDialogModalData
118 {
119 public:
120 wxDialogModalData(wxDialog *dialog) : m_evtLoop(dialog) { }
121
122 void RunLoop()
123 {
124 m_evtLoop.Run();
125 }
126
127 void ExitLoop()
128 {
129 m_evtLoop.Exit();
130 }
131
132 private:
133 wxModalEventLoop m_evtLoop;
134 };
135
136 wxDEFINE_TIED_SCOPED_PTR_TYPE(wxDialogModalData)
137
138 // ============================================================================
139 // implementation
140 // ============================================================================
141
142 // ----------------------------------------------------------------------------
143 // wxDialog construction
144 // ----------------------------------------------------------------------------
145
146 void wxDialog::Init()
147 {
148 m_isShown = false;
149 m_modalData = NULL;
150 #if wxUSE_TOOLBAR && defined(__POCKETPC__)
151 m_dialogToolBar = NULL;
152 #endif
153 m_hGripper = 0;
154 }
155
156 bool wxDialog::Create(wxWindow *parent,
157 wxWindowID id,
158 const wxString& title,
159 const wxPoint& pos,
160 const wxSize& size,
161 long style,
162 const wxString& name)
163 {
164 SetExtraStyle(GetExtraStyle() | wxTOPLEVEL_EX_DIALOG);
165
166 // All dialogs should really have this style
167 style |= wxTAB_TRAVERSAL;
168
169 if ( !wxTopLevelWindow::Create(parent, id, title, pos, size, style, name) )
170 return false;
171
172 if ( !m_hasFont )
173 SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
174
175 #if defined(__SMARTPHONE__) && defined(__WXWINCE__)
176 SetLeftMenu(wxID_OK, _("OK"));
177 #endif
178 #if wxUSE_TOOLBAR && defined(__POCKETPC__)
179 CreateToolBar();
180 #endif
181
182 if ( HasFlag(wxRESIZE_BORDER) )
183 {
184 CreateGripper();
185
186 Connect(wxEVT_CREATE,
187 wxWindowCreateEventHandler(wxDialog::OnWindowCreate));
188 }
189
190 return true;
191 }
192
193 wxDialog::~wxDialog()
194 {
195 // this will also reenable all the other windows for a modal dialog
196 Show(false);
197
198 DestroyGripper();
199 }
200
201 // ----------------------------------------------------------------------------
202 // showing the dialogs
203 // ----------------------------------------------------------------------------
204
205 wxWindow *wxDialog::FindSuitableParent() const
206 {
207 // first try to use the currently active window
208 HWND hwndFg = ::GetForegroundWindow();
209 wxWindow *parent = hwndFg ? wxFindWinFromHandle((WXHWND)hwndFg)
210 : NULL;
211 if ( !parent )
212 {
213 // next try the main app window
214 parent = wxTheApp->GetTopWindow();
215 }
216
217 // finally, check if the parent we found is really suitable
218 if ( !parent || parent == (wxWindow *)this || !parent->IsShown() )
219 {
220 // don't use this one
221 parent = NULL;
222 }
223
224 return parent;
225 }
226
227 bool wxDialog::Show(bool show)
228 {
229 if ( show == IsShown() )
230 return false;
231
232 if ( !show && m_modalData )
233 {
234 // we need to do this before calling wxDialogBase version because if we
235 // had disabled other app windows, they must be reenabled right now as
236 // if they stay disabled Windows will activate another window (one
237 // which is enabled, anyhow) when we're hidden in the base class Show()
238 // and we will lose activation
239 m_modalData->ExitLoop();
240 }
241
242 if ( show )
243 {
244 if (CanDoLayoutAdaptation())
245 DoLayoutAdaptation();
246
247 // this usually will result in TransferDataToWindow() being called
248 // which will change the controls values so do it before showing as
249 // otherwise we could have some flicker
250 InitDialog();
251 }
252
253 wxDialogBase::Show(show);
254
255 if ( show )
256 {
257 // dialogs don't get WM_SIZE message from ::ShowWindow() for some
258 // reason so generate it ourselves for consistency with frames and
259 // dialogs in other ports
260 //
261 // NB: normally we should call it just the first time but doing it
262 // every time is simpler than keeping a flag
263 const wxSize size = GetClientSize();
264 ::SendMessage(GetHwnd(), WM_SIZE,
265 SIZE_RESTORED, MAKELPARAM(size.x, size.y));
266 }
267
268 return true;
269 }
270
271 void wxDialog::Raise()
272 {
273 ::SetForegroundWindow(GetHwnd());
274 }
275
276 // show dialog modally
277 int wxDialog::ShowModal()
278 {
279 wxASSERT_MSG( !IsModal(), _T("ShowModal() can't be called twice") );
280
281 Show();
282
283 // EndModal may have been called from InitDialog handler (called from
284 // inside Show()) and hidden the dialog back again
285 if ( IsShown() )
286 {
287 // enter and run the modal loop
288 wxDialogModalDataTiedPtr modalData(&m_modalData,
289 new wxDialogModalData(this));
290 modalData->RunLoop();
291 }
292
293 return GetReturnCode();
294 }
295
296 void wxDialog::EndModal(int retCode)
297 {
298 wxASSERT_MSG( IsModal(), _T("EndModal() called for non modal dialog") );
299
300 SetReturnCode(retCode);
301
302 Hide();
303 }
304
305 // ----------------------------------------------------------------------------
306 // wxDialog gripper handling
307 // ----------------------------------------------------------------------------
308
309 void wxDialog::SetWindowStyleFlag(long style)
310 {
311 wxDialogBase::SetWindowStyleFlag(style);
312
313 if ( HasFlag(wxRESIZE_BORDER) )
314 CreateGripper();
315 else
316 DestroyGripper();
317 }
318
319 void wxDialog::CreateGripper()
320 {
321 if ( !m_hGripper )
322 {
323 // just create it here, it will be positioned and shown later
324 m_hGripper = (WXHWND)::CreateWindow
325 (
326 wxT("SCROLLBAR"),
327 wxT(""),
328 WS_CHILD |
329 WS_CLIPSIBLINGS |
330 SBS_SIZEGRIP |
331 SBS_SIZEBOX |
332 SBS_SIZEBOXBOTTOMRIGHTALIGN,
333 0, 0, 0, 0,
334 GetHwnd(),
335 0,
336 wxGetInstance(),
337 NULL
338 );
339 }
340 }
341
342 void wxDialog::DestroyGripper()
343 {
344 if ( m_hGripper )
345 {
346 // we used to have trouble with gripper appearing on top (and hence
347 // overdrawing) the other, real, dialog children -- check that this
348 // isn't the case automatically (but notice that this could be false if
349 // we're not shown at all as in this case ResizeGripper() might not
350 // have been called yet)
351 wxASSERT_MSG( !IsShown() ||
352 ::GetWindow((HWND)m_hGripper, GW_HWNDNEXT) == 0,
353 _T("Bug in wxWidgets: gripper should be at the bottom of Z-order") );
354 ::DestroyWindow((HWND) m_hGripper);
355 m_hGripper = 0;
356 }
357 }
358
359 void wxDialog::ShowGripper(bool show)
360 {
361 wxASSERT_MSG( m_hGripper, _T("shouldn't be called if we have no gripper") );
362
363 if ( show )
364 ResizeGripper();
365
366 ::ShowWindow((HWND)m_hGripper, show ? SW_SHOW : SW_HIDE);
367 }
368
369 void wxDialog::ResizeGripper()
370 {
371 wxASSERT_MSG( m_hGripper, _T("shouldn't be called if we have no gripper") );
372
373 HWND hwndGripper = (HWND)m_hGripper;
374
375 const wxRect rectGripper = wxRectFromRECT(wxGetWindowRect(hwndGripper));
376 const wxSize size = GetClientSize() - rectGripper.GetSize();
377
378 ::SetWindowPos(hwndGripper, HWND_BOTTOM,
379 size.x, size.y,
380 rectGripper.width, rectGripper.height,
381 SWP_NOACTIVATE);
382 }
383
384 void wxDialog::OnWindowCreate(wxWindowCreateEvent& event)
385 {
386 if ( m_hGripper && IsShown() &&
387 event.GetWindow() && event.GetWindow()->GetParent() == this )
388 {
389 // Put gripper below the newly created child window
390 ::SetWindowPos((HWND)m_hGripper, HWND_BOTTOM, 0, 0, 0, 0,
391 SWP_NOSIZE | SWP_NOMOVE | SWP_NOACTIVATE);
392 }
393
394 event.Skip();
395 }
396
397 // ----------------------------------------------------------------------------
398 // wxWin event handlers
399 // ----------------------------------------------------------------------------
400
401 #ifdef __POCKETPC__
402 // Responds to the OK button in a PocketPC titlebar. This
403 // can be overridden, or you can change the id used for
404 // sending the event, by calling SetAffirmativeId.
405 bool wxDialog::DoOK()
406 {
407 const int idOk = GetAffirmativeId();
408 if ( EmulateButtonClickIfPresent(idOk) )
409 return true;
410
411 wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, GetAffirmativeId());
412 event.SetEventObject(this);
413
414 return HandleWindowEvent(event);
415 }
416 #endif // __POCKETPC__
417
418 #if wxUSE_TOOLBAR && defined(__POCKETPC__)
419 // create main toolbar by calling OnCreateToolBar()
420 wxToolBar* wxDialog::CreateToolBar(long style, wxWindowID winid, const wxString& name)
421 {
422 m_dialogToolBar = OnCreateToolBar(style, winid, name);
423
424 return m_dialogToolBar;
425 }
426
427 // return a new toolbar
428 wxToolBar *wxDialog::OnCreateToolBar(long style,
429 wxWindowID winid,
430 const wxString& name)
431 {
432 return new wxToolMenuBar(this, winid,
433 wxDefaultPosition, wxDefaultSize,
434 style, name);
435 }
436 #endif
437
438 // ---------------------------------------------------------------------------
439 // dialog Windows messages processing
440 // ---------------------------------------------------------------------------
441
442 WXLRESULT wxDialog::MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
443 {
444 WXLRESULT rc = 0;
445 bool processed = false;
446
447 switch ( message )
448 {
449 #ifdef __WXWINCE__
450 // react to pressing the OK button in the title
451 case WM_COMMAND:
452 {
453 switch ( LOWORD(wParam) )
454 {
455 #ifdef __POCKETPC__
456 case IDOK:
457 processed = DoOK();
458 if (!processed)
459 processed = !Close();
460 #endif
461 #ifdef __SMARTPHONE__
462 case IDM_LEFT:
463 case IDM_RIGHT:
464 processed = HandleCommand( LOWORD(wParam) , 0 , NULL );
465 break;
466 #endif // __SMARTPHONE__
467 }
468 break;
469 }
470 #endif
471 case WM_CLOSE:
472 // if we can't close, tell the system that we processed the
473 // message - otherwise it would close us
474 processed = !Close();
475 break;
476
477 case WM_SIZE:
478 if ( m_hGripper )
479 {
480 switch ( wParam )
481 {
482 case SIZE_MAXIMIZED:
483 ShowGripper(false);
484 break;
485
486 case SIZE_RESTORED:
487 ShowGripper(true);
488 }
489 }
490
491 // the Windows dialogs unfortunately are not meant to be resizeable
492 // at all and their standard class doesn't include CS_[VH]REDRAW
493 // styles which means that the window is not refreshed properly
494 // after the resize and no amount of WS_CLIPCHILDREN/SIBLINGS can
495 // help with it - so we have to refresh it manually which certainly
496 // creates flicker but at least doesn't show garbage on the screen
497 rc = wxWindow::MSWWindowProc(message, wParam, lParam);
498 processed = true;
499 if ( HasFlag(wxFULL_REPAINT_ON_RESIZE) )
500 {
501 ::InvalidateRect(GetHwnd(), NULL, false /* erase bg */);
502 }
503 break;
504
505 #ifndef __WXMICROWIN__
506 case WM_SETCURSOR:
507 // we want to override the busy cursor for modal dialogs:
508 // typically, wxBeginBusyCursor() is called and then a modal dialog
509 // is shown, but the modal dialog shouldn't have hourglass cursor
510 if ( IsModal() && wxIsBusy() )
511 {
512 // set our cursor for all windows (but see below)
513 wxCursor cursor = m_cursor;
514 if ( !cursor.Ok() )
515 cursor = wxCURSOR_ARROW;
516
517 ::SetCursor(GetHcursorOf(cursor));
518
519 // in any case, stop here and don't let wxWindow process this
520 // message (it would set the busy cursor)
521 processed = true;
522
523 // but return false to tell the child window (if the event
524 // comes from one of them and not from ourselves) that it can
525 // set its own cursor if it has one: thus, standard controls
526 // (e.g. text ctrl) still have correct cursors in a dialog
527 // invoked while wxIsBusy()
528 rc = false;
529 }
530 break;
531 #endif // __WXMICROWIN__
532 }
533
534 if ( !processed )
535 rc = wxWindow::MSWWindowProc(message, wParam, lParam);
536
537 return rc;
538 }