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Fixed Digital Mars compilation; Cosmetic cleanup.
[wxWidgets.git] / src / common / wincmn.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: common/window.cpp
3 // Purpose: common (to all ports) wxWindow functions
4 // Author: Julian Smart, Vadim Zeitlin
5 // Modified by:
6 // Created: 13/07/98
7 // RCS-ID: $Id$
8 // Copyright: (c) wxWindows team
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 // ============================================================================
13 // declarations
14 // ============================================================================
15
16 // ----------------------------------------------------------------------------
17 // headers
18 // ----------------------------------------------------------------------------
19
20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
21 #pragma implementation "windowbase.h"
22 #endif
23
24 // For compilers that support precompilation, includes "wx.h".
25 #include "wx/wxprec.h"
26
27 #ifdef __BORLANDC__
28 #pragma hdrstop
29 #endif
30
31 #ifndef WX_PRECOMP
32 #include "wx/string.h"
33 #include "wx/log.h"
34 #include "wx/intl.h"
35 #include "wx/frame.h"
36 #include "wx/defs.h"
37 #include "wx/window.h"
38 #include "wx/control.h"
39 #include "wx/checkbox.h"
40 #include "wx/radiobut.h"
41 #include "wx/statbox.h"
42 #include "wx/textctrl.h"
43 #include "wx/settings.h"
44 #include "wx/dialog.h"
45 #include "wx/msgdlg.h"
46 #include "wx/statusbr.h"
47 #include "wx/dcclient.h"
48 #endif //WX_PRECOMP
49
50 #if wxUSE_CONSTRAINTS
51 #include "wx/layout.h"
52 #endif // wxUSE_CONSTRAINTS
53
54 #include "wx/sizer.h"
55
56 #if wxUSE_DRAG_AND_DROP
57 #include "wx/dnd.h"
58 #endif // wxUSE_DRAG_AND_DROP
59
60 #if wxUSE_ACCESSIBILITY
61 #include "wx/access.h"
62 #endif
63
64 #if wxUSE_HELP
65 #include "wx/cshelp.h"
66 #endif // wxUSE_HELP
67
68 #if wxUSE_TOOLTIPS
69 #include "wx/tooltip.h"
70 #endif // wxUSE_TOOLTIPS
71
72 #if wxUSE_CARET
73 #include "wx/caret.h"
74 #endif // wxUSE_CARET
75
76 // ----------------------------------------------------------------------------
77 // static data
78 // ----------------------------------------------------------------------------
79
80 #if defined(__WXPM__)
81 int wxWindowBase::ms_lastControlId = 2000;
82 #else
83 int wxWindowBase::ms_lastControlId = -200;
84 #endif
85
86 IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
87
88 // ----------------------------------------------------------------------------
89 // event table
90 // ----------------------------------------------------------------------------
91
92 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
93 EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
94 EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
95 EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
96
97 #if wxUSE_HELP
98 EVT_HELP(wxID_ANY, wxWindowBase::OnHelp)
99 #endif // wxUSE_HELP
100
101 END_EVENT_TABLE()
102
103 // ============================================================================
104 // implementation of the common functionality of the wxWindow class
105 // ============================================================================
106
107 // ----------------------------------------------------------------------------
108 // initialization
109 // ----------------------------------------------------------------------------
110
111 // the default initialization
112 wxWindowBase::wxWindowBase()
113 {
114 // no window yet, no parent nor children
115 m_parent = (wxWindow *)NULL;
116 m_windowId = wxID_ANY;
117
118 // no constraints on the minimal window size
119 m_minWidth =
120 m_minHeight =
121 m_maxWidth =
122 m_maxHeight = -1;
123
124 // window is created enabled but it's not visible yet
125 m_isShown = false;
126 m_isEnabled = true;
127
128 // the default event handler is just this window
129 m_eventHandler = this;
130
131 #if wxUSE_VALIDATORS
132 // no validator
133 m_windowValidator = (wxValidator *) NULL;
134 #endif // wxUSE_VALIDATORS
135
136 // use the system default colours
137 m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
138 m_foregroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
139
140 // don't set the font here for wxMSW as we don't call WM_SETFONT here and
141 // so the font is *not* really set - but calls to SetFont() later won't do
142 // anything because m_font appears to be already set!
143 #ifndef __WXMSW__
144 m_font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
145 #endif // __WXMSW__
146
147 // the colours/fonts are default for now
148 m_hasBgCol =
149 m_hasFgCol =
150 m_hasFont = false;
151
152 m_isBeingDeleted = false;
153
154 // no style bits
155 m_exStyle =
156 m_windowStyle = 0;
157
158 #if wxUSE_CONSTRAINTS
159 // no constraints whatsoever
160 m_constraints = (wxLayoutConstraints *) NULL;
161 m_constraintsInvolvedIn = (wxWindowList *) NULL;
162 #endif // wxUSE_CONSTRAINTS
163
164 m_windowSizer = (wxSizer *) NULL;
165 m_containingSizer = (wxSizer *) NULL;
166 m_autoLayout = false;
167
168 #if wxUSE_DRAG_AND_DROP
169 m_dropTarget = (wxDropTarget *)NULL;
170 #endif // wxUSE_DRAG_AND_DROP
171
172 #if wxUSE_TOOLTIPS
173 m_tooltip = (wxToolTip *)NULL;
174 #endif // wxUSE_TOOLTIPS
175
176 #if wxUSE_CARET
177 m_caret = (wxCaret *)NULL;
178 #endif // wxUSE_CARET
179
180 #if wxUSE_PALETTE
181 m_hasCustomPalette = false;
182 #endif // wxUSE_PALETTE
183
184 #if wxUSE_ACCESSIBILITY
185 m_accessible = NULL;
186 #endif
187
188 m_virtualSize = wxDefaultSize;
189
190 m_minVirtualWidth =
191 m_minVirtualHeight =
192 m_maxVirtualWidth =
193 m_maxVirtualHeight = -1;
194
195 // Whether we're using the current theme for this window (wxGTK only for now)
196 m_themeEnabled = false;
197 }
198
199 // common part of window creation process
200 bool wxWindowBase::CreateBase(wxWindowBase *parent,
201 wxWindowID id,
202 const wxPoint& WXUNUSED(pos),
203 const wxSize& WXUNUSED(size),
204 long style,
205 const wxValidator& wxVALIDATOR_PARAM(validator),
206 const wxString& name)
207 {
208 #if wxUSE_STATBOX
209 // wxGTK doesn't allow to create controls with static box as the parent so
210 // this will result in a crash when the program is ported to wxGTK so warn
211 // the user about it
212
213 // if you get this assert, the correct solution is to create the controls
214 // as siblings of the static box
215 wxASSERT_MSG( !parent || !wxDynamicCast(parent, wxStaticBox),
216 _T("wxStaticBox can't be used as a window parent!") );
217 #endif // wxUSE_STATBOX
218
219 // ids are limited to 16 bits under MSW so if you care about portability,
220 // it's not a good idea to use ids out of this range (and negative ids are
221 // reserved for wxWindows own usage)
222 wxASSERT_MSG( id == wxID_ANY || (id >= 0 && id < 32767),
223 _T("invalid id value") );
224
225 // generate a new id if the user doesn't care about it
226 m_windowId = id == wxID_ANY ? NewControlId() : id;
227
228 SetName(name);
229 SetWindowStyleFlag(style);
230 SetParent(parent);
231
232 #if wxUSE_VALIDATORS
233 SetValidator(validator);
234 #endif // wxUSE_VALIDATORS
235
236 // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
237 // have it too - like this it's possible to set it only in the top level
238 // dialog/frame and all children will inherit it by defult
239 if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
240 {
241 SetExtraStyle(GetExtraStyle() | wxWS_EX_VALIDATE_RECURSIVELY);
242 }
243
244 return true;
245 }
246
247 // ----------------------------------------------------------------------------
248 // destruction
249 // ----------------------------------------------------------------------------
250
251 // common clean up
252 wxWindowBase::~wxWindowBase()
253 {
254 wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
255
256 // FIXME if these 2 cases result from programming errors in the user code
257 // we should probably assert here instead of silently fixing them
258
259 // Just in case the window has been Closed, but we're then deleting
260 // immediately: don't leave dangling pointers.
261 wxPendingDelete.DeleteObject(this);
262
263 // Just in case we've loaded a top-level window via LoadNativeDialog but
264 // we weren't a dialog class
265 wxTopLevelWindows.DeleteObject((wxWindow*)this);
266
267 wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
268
269 // reset the dangling pointer our parent window may keep to us
270 if ( m_parent )
271 {
272 if ( m_parent->GetDefaultItem() == this )
273 {
274 m_parent->SetDefaultItem(NULL);
275 }
276
277 m_parent->RemoveChild(this);
278 }
279
280 #if wxUSE_CARET
281 delete m_caret;
282 #endif // wxUSE_CARET
283
284 #if wxUSE_VALIDATORS
285 delete m_windowValidator;
286 #endif // wxUSE_VALIDATORS
287
288 #if wxUSE_CONSTRAINTS
289 // Have to delete constraints/sizer FIRST otherwise sizers may try to look
290 // at deleted windows as they delete themselves.
291 DeleteRelatedConstraints();
292
293 if ( m_constraints )
294 {
295 // This removes any dangling pointers to this window in other windows'
296 // constraintsInvolvedIn lists.
297 UnsetConstraints(m_constraints);
298 delete m_constraints;
299 m_constraints = NULL;
300 }
301 #endif // wxUSE_CONSTRAINTS
302
303 if ( m_containingSizer )
304 m_containingSizer->Detach( (wxWindow*)this );
305
306 delete m_windowSizer;
307
308 #if wxUSE_DRAG_AND_DROP
309 delete m_dropTarget;
310 #endif // wxUSE_DRAG_AND_DROP
311
312 #if wxUSE_TOOLTIPS
313 delete m_tooltip;
314 #endif // wxUSE_TOOLTIPS
315
316 #if wxUSE_ACCESSIBILITY
317 delete m_accessible;
318 #endif
319 }
320
321 bool wxWindowBase::Destroy()
322 {
323 delete this;
324
325 return true;
326 }
327
328 bool wxWindowBase::Close(bool force)
329 {
330 wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
331 event.SetEventObject(this);
332 event.SetCanVeto(!force);
333
334 // return false if window wasn't closed because the application vetoed the
335 // close event
336 return GetEventHandler()->ProcessEvent(event) && !event.GetVeto();
337 }
338
339 bool wxWindowBase::DestroyChildren()
340 {
341 wxWindowList::compatibility_iterator node;
342 for ( ;; )
343 {
344 // we iterate until the list becomes empty
345 node = GetChildren().GetFirst();
346 if ( !node )
347 break;
348
349 wxWindow *child = node->GetData();
350
351 // note that we really want to call delete and not ->Destroy() here
352 // because we want to delete the child immediately, before we are
353 // deleted, and delayed deletion would result in problems as our (top
354 // level) child could outlive its parent
355 delete child;
356
357 wxASSERT_MSG( !GetChildren().Find(child),
358 wxT("child didn't remove itself using RemoveChild()") );
359 }
360
361 return true;
362 }
363
364 // ----------------------------------------------------------------------------
365 // size/position related methods
366 // ----------------------------------------------------------------------------
367
368 // centre the window with respect to its parent in either (or both) directions
369 void wxWindowBase::Centre(int direction)
370 {
371 // the position/size of the parent window or of the entire screen
372 wxPoint posParent;
373 int widthParent, heightParent;
374
375 wxWindow *parent = NULL;
376
377 if ( !(direction & wxCENTRE_ON_SCREEN) )
378 {
379 // find the parent to centre this window on: it should be the
380 // immediate parent for the controls but the top level parent for the
381 // top level windows (like dialogs)
382 parent = GetParent();
383 if ( IsTopLevel() )
384 {
385 while ( parent && !parent->IsTopLevel() )
386 {
387 parent = parent->GetParent();
388 }
389 }
390
391 // there is no wxTopLevelWindow under wxMotif yet
392 #ifndef __WXMOTIF__
393 // we shouldn't center the dialog on the iconized window: under
394 // Windows, for example, this places it completely off the screen
395 if ( parent )
396 {
397 wxTopLevelWindow *winTop = wxDynamicCast(parent, wxTopLevelWindow);
398 if ( winTop && winTop->IsIconized() )
399 {
400 parent = NULL;
401 }
402 }
403 #endif // __WXMOTIF__
404
405 // did we find the parent?
406 if ( !parent )
407 {
408 // no other choice
409 direction |= wxCENTRE_ON_SCREEN;
410 }
411 }
412
413 if ( direction & wxCENTRE_ON_SCREEN )
414 {
415 // centre with respect to the whole screen
416 wxDisplaySize(&widthParent, &heightParent);
417 }
418 else
419 {
420 if ( IsTopLevel() )
421 {
422 // centre on the parent
423 parent->GetSize(&widthParent, &heightParent);
424
425 // adjust to the parents position
426 posParent = parent->GetPosition();
427 }
428 else
429 {
430 // centre inside the parents client rectangle
431 parent->GetClientSize(&widthParent, &heightParent);
432 }
433 }
434
435 int width, height;
436 GetSize(&width, &height);
437
438 int xNew = -1,
439 yNew = -1;
440
441 if ( direction & wxHORIZONTAL )
442 xNew = (widthParent - width)/2;
443
444 if ( direction & wxVERTICAL )
445 yNew = (heightParent - height)/2;
446
447 xNew += posParent.x;
448 yNew += posParent.y;
449
450 // Base size of the visible dimensions of the display
451 // to take into account the taskbar
452 wxRect rect = wxGetClientDisplayRect();
453 wxSize size (rect.width,rect.height);
454
455 // NB: in wxMSW, negative position may not neccessary mean "out of screen",
456 // but it may mean that the window is placed on other than the main
457 // display. Therefore we only make sure centered window is on the main display
458 // if the parent is at least partially present here.
459 if (posParent.x + widthParent >= 0) // if parent is (partially) on the main display
460 {
461 if (xNew < 0)
462 xNew = 0;
463 else if (xNew+width > size.x)
464 xNew = size.x-width-1;
465 }
466 if (posParent.y + heightParent >= 0) // if parent is (partially) on the main display
467 {
468 if (yNew+height > size.y)
469 yNew = size.y-height-1;
470
471 // Make certain that the title bar is initially visible
472 // always, even if this would push the bottom of the
473 // dialog of the visible area of the display
474 if (yNew < 0)
475 yNew = 0;
476 }
477
478 // move the window to this position (keeping the old size but using
479 // SetSize() and not Move() to allow xNew and/or yNew to be -1)
480 SetSize(xNew, yNew, width, height, wxSIZE_ALLOW_MINUS_ONE);
481 }
482
483 // fits the window around the children
484 void wxWindowBase::Fit()
485 {
486 if ( GetChildren().GetCount() > 0 )
487 {
488 SetClientSize(DoGetBestSize());
489 }
490 //else: do nothing if we have no children
491 }
492
493 // fits virtual size (ie. scrolled area etc.) around children
494 void wxWindowBase::FitInside()
495 {
496 if ( GetChildren().GetCount() > 0 )
497 {
498 SetVirtualSize( GetBestVirtualSize() );
499 }
500 }
501
502 // return the size best suited for the current window
503 wxSize wxWindowBase::DoGetBestSize() const
504 {
505 if ( m_windowSizer )
506 {
507 return m_windowSizer->GetMinSize();
508 }
509 #if wxUSE_CONSTRAINTS
510 else if ( m_constraints )
511 {
512 wxConstCast(this, wxWindowBase)->SatisfyConstraints();
513
514 // our minimal acceptable size is such that all our windows fit inside
515 int maxX = 0,
516 maxY = 0;
517
518 for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
519 node;
520 node = node->GetNext() )
521 {
522 wxLayoutConstraints *c = node->GetData()->GetConstraints();
523 if ( !c )
524 {
525 // it's not normal that we have an unconstrained child, but
526 // what can we do about it?
527 continue;
528 }
529
530 int x = c->right.GetValue(),
531 y = c->bottom.GetValue();
532
533 if ( x > maxX )
534 maxX = x;
535
536 if ( y > maxY )
537 maxY = y;
538
539 // TODO: we must calculate the overlaps somehow, otherwise we
540 // will never return a size bigger than the current one :-(
541 }
542
543 return wxSize(maxX, maxY);
544 }
545 #endif // wxUSE_CONSTRAINTS
546 else if ( GetChildren().GetCount() > 0 )
547 {
548 // our minimal acceptable size is such that all our windows fit inside
549 int maxX = 0,
550 maxY = 0;
551
552 for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
553 node;
554 node = node->GetNext() )
555 {
556 wxWindow *win = node->GetData();
557 if ( win->IsTopLevel()
558 #if wxUSE_STATUSBAR
559 || wxDynamicCast(win, wxStatusBar)
560 #endif // wxUSE_STATUSBAR
561 )
562 {
563 // dialogs and frames lie in different top level windows -
564 // don't deal with them here; as for the status bars, they
565 // don't lie in the client area at all
566 continue;
567 }
568
569 int wx, wy, ww, wh;
570 win->GetPosition(&wx, &wy);
571
572 // if the window hadn't been positioned yet, assume that it is in
573 // the origin
574 if ( wx == -1 )
575 wx = 0;
576 if ( wy == -1 )
577 wy = 0;
578
579 win->GetSize(&ww, &wh);
580 if ( wx + ww > maxX )
581 maxX = wx + ww;
582 if ( wy + wh > maxY )
583 maxY = wy + wh;
584 }
585
586 // for compatibility with the old versions and because it really looks
587 // slightly more pretty like this, add a pad
588 maxX += 7;
589 maxY += 14;
590
591 return wxSize(maxX, maxY);
592 }
593 else
594 {
595 // for a generic window there is no natural best size - just use the
596 // current one
597 return GetSize();
598 }
599 }
600
601 // by default the origin is not shifted
602 wxPoint wxWindowBase::GetClientAreaOrigin() const
603 {
604 return wxPoint(0, 0);
605 }
606
607 // set the min/max size of the window
608 void wxWindowBase::SetSizeHints(int minW, int minH,
609 int maxW, int maxH,
610 int WXUNUSED(incW), int WXUNUSED(incH))
611 {
612 // setting min width greater than max width leads to infinite loops under
613 // X11 and generally doesn't make any sense, so don't allow it
614 wxCHECK_RET( (minW == -1 || maxW == -1 || minW <= maxW) &&
615 (minH == -1 || maxH == -1 || minH <= maxH),
616 _T("min width/height must be less than max width/height!") );
617
618 m_minWidth = minW;
619 m_maxWidth = maxW;
620 m_minHeight = minH;
621 m_maxHeight = maxH;
622 }
623
624 void wxWindowBase::SetVirtualSizeHints( int minW, int minH,
625 int maxW, int maxH )
626 {
627 m_minVirtualWidth = minW;
628 m_maxVirtualWidth = maxW;
629 m_minVirtualHeight = minH;
630 m_maxVirtualHeight = maxH;
631 }
632
633 void wxWindowBase::DoSetVirtualSize( int x, int y )
634 {
635 if ( m_minVirtualWidth != -1 && m_minVirtualWidth > x )
636 x = m_minVirtualWidth;
637 if ( m_maxVirtualWidth != -1 && m_maxVirtualWidth < x )
638 x = m_maxVirtualWidth;
639 if ( m_minVirtualHeight != -1 && m_minVirtualHeight > y )
640 y = m_minVirtualHeight;
641 if ( m_maxVirtualHeight != -1 && m_maxVirtualHeight < y )
642 y = m_maxVirtualHeight;
643
644 m_virtualSize = wxSize(x, y);
645 }
646
647 wxSize wxWindowBase::DoGetVirtualSize() const
648 {
649 wxSize s( GetClientSize() );
650
651 return wxSize( wxMax( m_virtualSize.GetWidth(), s.GetWidth() ),
652 wxMax( m_virtualSize.GetHeight(), s.GetHeight() ) );
653 }
654
655 // ----------------------------------------------------------------------------
656 // show/hide/enable/disable the window
657 // ----------------------------------------------------------------------------
658
659 bool wxWindowBase::Show(bool show)
660 {
661 if ( show != m_isShown )
662 {
663 m_isShown = show;
664
665 return true;
666 }
667 else
668 {
669 return false;
670 }
671 }
672
673 bool wxWindowBase::Enable(bool enable)
674 {
675 if ( enable != m_isEnabled )
676 {
677 m_isEnabled = enable;
678
679 return true;
680 }
681 else
682 {
683 return false;
684 }
685 }
686 // ----------------------------------------------------------------------------
687 // RTTI
688 // ----------------------------------------------------------------------------
689
690 bool wxWindowBase::IsTopLevel() const
691 {
692 return false;
693 }
694
695 // ----------------------------------------------------------------------------
696 // reparenting the window
697 // ----------------------------------------------------------------------------
698
699 void wxWindowBase::AddChild(wxWindowBase *child)
700 {
701 wxCHECK_RET( child, wxT("can't add a NULL child") );
702
703 // this should never happen and it will lead to a crash later if it does
704 // because RemoveChild() will remove only one node from the children list
705 // and the other(s) one(s) will be left with dangling pointers in them
706 wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), _T("AddChild() called twice") );
707
708 GetChildren().Append((wxWindow*)child);
709 child->SetParent(this);
710 }
711
712 void wxWindowBase::RemoveChild(wxWindowBase *child)
713 {
714 wxCHECK_RET( child, wxT("can't remove a NULL child") );
715
716 GetChildren().DeleteObject((wxWindow *)child);
717 child->SetParent(NULL);
718 }
719
720 bool wxWindowBase::Reparent(wxWindowBase *newParent)
721 {
722 wxWindow *oldParent = GetParent();
723 if ( newParent == oldParent )
724 {
725 // nothing done
726 return false;
727 }
728
729 // unlink this window from the existing parent.
730 if ( oldParent )
731 {
732 oldParent->RemoveChild(this);
733 }
734 else
735 {
736 wxTopLevelWindows.DeleteObject((wxWindow *)this);
737 }
738
739 // add it to the new one
740 if ( newParent )
741 {
742 newParent->AddChild(this);
743 }
744 else
745 {
746 wxTopLevelWindows.Append((wxWindow *)this);
747 }
748
749 return true;
750 }
751
752 // ----------------------------------------------------------------------------
753 // event handler stuff
754 // ----------------------------------------------------------------------------
755
756 void wxWindowBase::PushEventHandler(wxEvtHandler *handler)
757 {
758 wxEvtHandler *handlerOld = GetEventHandler();
759
760 handler->SetNextHandler(handlerOld);
761
762 if ( handlerOld )
763 GetEventHandler()->SetPreviousHandler(handler);
764
765 SetEventHandler(handler);
766 }
767
768 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
769 {
770 wxEvtHandler *handlerA = GetEventHandler();
771 if ( handlerA )
772 {
773 wxEvtHandler *handlerB = handlerA->GetNextHandler();
774 handlerA->SetNextHandler((wxEvtHandler *)NULL);
775
776 if ( handlerB )
777 handlerB->SetPreviousHandler((wxEvtHandler *)NULL);
778 SetEventHandler(handlerB);
779
780 if ( deleteHandler )
781 {
782 delete handlerA;
783 handlerA = (wxEvtHandler *)NULL;
784 }
785 }
786
787 return handlerA;
788 }
789
790 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handler)
791 {
792 wxCHECK_MSG( handler, false, _T("RemoveEventHandler(NULL) called") );
793
794 wxEvtHandler *handlerPrev = NULL,
795 *handlerCur = GetEventHandler();
796 while ( handlerCur )
797 {
798 wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
799
800 if ( handlerCur == handler )
801 {
802 if ( handlerPrev )
803 {
804 handlerPrev->SetNextHandler(handlerNext);
805 }
806 else
807 {
808 SetEventHandler(handlerNext);
809 }
810
811 if ( handlerNext )
812 {
813 handlerNext->SetPreviousHandler ( handlerPrev );
814 }
815
816 handler->SetNextHandler(NULL);
817 handler->SetPreviousHandler(NULL);
818
819 return true;
820 }
821
822 handlerPrev = handlerCur;
823 handlerCur = handlerNext;
824 }
825
826 wxFAIL_MSG( _T("where has the event handler gone?") );
827
828 return false;
829 }
830
831 // ----------------------------------------------------------------------------
832 // cursors, fonts &c
833 // ----------------------------------------------------------------------------
834
835 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
836 {
837 if ( !colour.Ok() || (colour == m_backgroundColour) )
838 return false;
839
840 m_backgroundColour = colour;
841
842 m_hasBgCol = true;
843
844 return true;
845 }
846
847 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
848 {
849 if ( !colour.Ok() || (colour == m_foregroundColour) )
850 return false;
851
852 m_foregroundColour = colour;
853
854 m_hasFgCol = true;
855
856 return true;
857 }
858
859 bool wxWindowBase::SetCursor(const wxCursor& cursor)
860 {
861 // setting an invalid cursor is ok, it means that we don't have any special
862 // cursor
863 if ( m_cursor == cursor )
864 {
865 // no change
866 return false;
867 }
868
869 m_cursor = cursor;
870
871 return true;
872 }
873
874 bool wxWindowBase::SetFont(const wxFont& font)
875 {
876 // don't try to set invalid font, always fall back to the default
877 const wxFont& fontOk = font.Ok() ? font : *wxSWISS_FONT;
878
879 if ( fontOk == m_font )
880 {
881 // no change
882 return false;
883 }
884
885 m_font = fontOk;
886
887 m_hasFont = true;
888
889 return true;
890 }
891
892 #if wxUSE_PALETTE
893
894 void wxWindowBase::SetPalette(const wxPalette& pal)
895 {
896 m_hasCustomPalette = true;
897 m_palette = pal;
898
899 // VZ: can anyone explain me what do we do here?
900 wxWindowDC d((wxWindow *) this);
901 d.SetPalette(pal);
902 }
903
904 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
905 {
906 wxWindow *win = (wxWindow *)this;
907 while ( win && !win->HasCustomPalette() )
908 {
909 win = win->GetParent();
910 }
911
912 return win;
913 }
914
915 #endif // wxUSE_PALETTE
916
917 #if wxUSE_CARET
918 void wxWindowBase::SetCaret(wxCaret *caret)
919 {
920 if ( m_caret )
921 {
922 delete m_caret;
923 }
924
925 m_caret = caret;
926
927 if ( m_caret )
928 {
929 wxASSERT_MSG( m_caret->GetWindow() == this,
930 wxT("caret should be created associated to this window") );
931 }
932 }
933 #endif // wxUSE_CARET
934
935 #if wxUSE_VALIDATORS
936 // ----------------------------------------------------------------------------
937 // validators
938 // ----------------------------------------------------------------------------
939
940 void wxWindowBase::SetValidator(const wxValidator& validator)
941 {
942 if ( m_windowValidator )
943 delete m_windowValidator;
944
945 m_windowValidator = (wxValidator *)validator.Clone();
946
947 if ( m_windowValidator )
948 m_windowValidator->SetWindow(this) ;
949 }
950 #endif // wxUSE_VALIDATORS
951
952 // ----------------------------------------------------------------------------
953 // update region stuff
954 // ----------------------------------------------------------------------------
955
956 wxRect wxWindowBase::GetUpdateClientRect() const
957 {
958 wxRegion rgnUpdate = GetUpdateRegion();
959 rgnUpdate.Intersect(GetClientRect());
960 wxRect rectUpdate = rgnUpdate.GetBox();
961 wxPoint ptOrigin = GetClientAreaOrigin();
962 rectUpdate.x -= ptOrigin.x;
963 rectUpdate.y -= ptOrigin.y;
964
965 return rectUpdate;
966 }
967
968 bool wxWindowBase::IsExposed(int x, int y) const
969 {
970 return m_updateRegion.Contains(x, y) != wxOutRegion;
971 }
972
973 bool wxWindowBase::IsExposed(int x, int y, int w, int h) const
974 {
975 return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
976 }
977
978 void wxWindowBase::ClearBackground()
979 {
980 // wxGTK uses its own version, no need to add never used code
981 #ifndef __WXGTK__
982 wxClientDC dc((wxWindow *)this);
983 wxBrush brush(GetBackgroundColour(), wxSOLID);
984 dc.SetBackground(brush);
985 dc.Clear();
986 #endif // __WXGTK__
987 }
988
989 // ----------------------------------------------------------------------------
990 // find child window by id or name
991 // ----------------------------------------------------------------------------
992
993 wxWindow *wxWindowBase::FindWindow( long id )
994 {
995 if ( id == m_windowId )
996 return (wxWindow *)this;
997
998 wxWindowBase *res = (wxWindow *)NULL;
999 wxWindowList::compatibility_iterator node;
1000 for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1001 {
1002 wxWindowBase *child = node->GetData();
1003 res = child->FindWindow( id );
1004 }
1005
1006 return (wxWindow *)res;
1007 }
1008
1009 wxWindow *wxWindowBase::FindWindow( const wxString& name )
1010 {
1011 if ( name == m_windowName )
1012 return (wxWindow *)this;
1013
1014 wxWindowBase *res = (wxWindow *)NULL;
1015 wxWindowList::compatibility_iterator node;
1016 for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1017 {
1018 wxWindow *child = node->GetData();
1019 res = child->FindWindow(name);
1020 }
1021
1022 return (wxWindow *)res;
1023 }
1024
1025
1026 // find any window by id or name or label: If parent is non-NULL, look through
1027 // children for a label or title matching the specified string. If NULL, look
1028 // through all top-level windows.
1029 //
1030 // to avoid duplicating code we reuse the same helper function but with
1031 // different comparators
1032
1033 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1034 const wxString& label, long id);
1035
1036 static
1037 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1038 long WXUNUSED(id))
1039 {
1040 return win->GetLabel() == label;
1041 }
1042
1043 static
1044 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1045 long WXUNUSED(id))
1046 {
1047 return win->GetName() == label;
1048 }
1049
1050 static
1051 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1052 long id)
1053 {
1054 return win->GetId() == id;
1055 }
1056
1057 // recursive helper for the FindWindowByXXX() functions
1058 static
1059 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1060 const wxString& label,
1061 long id,
1062 wxFindWindowCmp cmp)
1063 {
1064 if ( parent )
1065 {
1066 // see if this is the one we're looking for
1067 if ( (*cmp)(parent, label, id) )
1068 return (wxWindow *)parent;
1069
1070 // It wasn't, so check all its children
1071 for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
1072 node;
1073 node = node->GetNext() )
1074 {
1075 // recursively check each child
1076 wxWindow *win = (wxWindow *)node->GetData();
1077 wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1078 if (retwin)
1079 return retwin;
1080 }
1081 }
1082
1083 // Not found
1084 return NULL;
1085 }
1086
1087 // helper for FindWindowByXXX()
1088 static
1089 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1090 const wxString& label,
1091 long id,
1092 wxFindWindowCmp cmp)
1093 {
1094 if ( parent )
1095 {
1096 // just check parent and all its children
1097 return wxFindWindowRecursively(parent, label, id, cmp);
1098 }
1099
1100 // start at very top of wx's windows
1101 for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1102 node;
1103 node = node->GetNext() )
1104 {
1105 // recursively check each window & its children
1106 wxWindow *win = node->GetData();
1107 wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1108 if (retwin)
1109 return retwin;
1110 }
1111
1112 return NULL;
1113 }
1114
1115 /* static */
1116 wxWindow *
1117 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1118 {
1119 return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1120 }
1121
1122 /* static */
1123 wxWindow *
1124 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1125 {
1126 wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1127
1128 if ( !win )
1129 {
1130 // fall back to the label
1131 win = FindWindowByLabel(title, parent);
1132 }
1133
1134 return win;
1135 }
1136
1137 /* static */
1138 wxWindow *
1139 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1140 {
1141 return wxFindWindowHelper(parent, _T(""), id, wxFindWindowCmpIds);
1142 }
1143
1144 // ----------------------------------------------------------------------------
1145 // dialog oriented functions
1146 // ----------------------------------------------------------------------------
1147
1148 void wxWindowBase::MakeModal(bool modal)
1149 {
1150 // Disable all other windows
1151 if ( IsTopLevel() )
1152 {
1153 wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1154 while (node)
1155 {
1156 wxWindow *win = node->GetData();
1157 if (win != this)
1158 win->Enable(!modal);
1159
1160 node = node->GetNext();
1161 }
1162 }
1163 }
1164
1165 bool wxWindowBase::Validate()
1166 {
1167 #if wxUSE_VALIDATORS
1168 bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1169
1170 wxWindowList::compatibility_iterator node;
1171 for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1172 {
1173 wxWindowBase *child = node->GetData();
1174 wxValidator *validator = child->GetValidator();
1175 if ( validator && !validator->Validate((wxWindow *)this) )
1176 {
1177 return false;
1178 }
1179
1180 if ( recurse && !child->Validate() )
1181 {
1182 return false;
1183 }
1184 }
1185 #endif // wxUSE_VALIDATORS
1186
1187 return true;
1188 }
1189
1190 bool wxWindowBase::TransferDataToWindow()
1191 {
1192 #if wxUSE_VALIDATORS
1193 bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1194
1195 wxWindowList::compatibility_iterator node;
1196 for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1197 {
1198 wxWindowBase *child = node->GetData();
1199 wxValidator *validator = child->GetValidator();
1200 if ( validator && !validator->TransferToWindow() )
1201 {
1202 wxLogWarning(_("Could not transfer data to window"));
1203 #if wxUSE_LOG
1204 wxLog::FlushActive();
1205 #endif // wxUSE_LOG
1206
1207 return false;
1208 }
1209
1210 if ( recurse )
1211 {
1212 if ( !child->TransferDataToWindow() )
1213 {
1214 // warning already given
1215 return false;
1216 }
1217 }
1218 }
1219 #endif // wxUSE_VALIDATORS
1220
1221 return true;
1222 }
1223
1224 bool wxWindowBase::TransferDataFromWindow()
1225 {
1226 #if wxUSE_VALIDATORS
1227 bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1228
1229 wxWindowList::compatibility_iterator node;
1230 for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1231 {
1232 wxWindow *child = node->GetData();
1233 wxValidator *validator = child->GetValidator();
1234 if ( validator && !validator->TransferFromWindow() )
1235 {
1236 // nop warning here because the application is supposed to give
1237 // one itself - we don't know here what might have gone wrongly
1238
1239 return false;
1240 }
1241
1242 if ( recurse )
1243 {
1244 if ( !child->TransferDataFromWindow() )
1245 {
1246 // warning already given
1247 return false;
1248 }
1249 }
1250 }
1251 #endif // wxUSE_VALIDATORS
1252
1253 return true;
1254 }
1255
1256 void wxWindowBase::InitDialog()
1257 {
1258 wxInitDialogEvent event(GetId());
1259 event.SetEventObject( this );
1260 GetEventHandler()->ProcessEvent(event);
1261 }
1262
1263 // ----------------------------------------------------------------------------
1264 // context-sensitive help support
1265 // ----------------------------------------------------------------------------
1266
1267 #if wxUSE_HELP
1268
1269 // associate this help text with this window
1270 void wxWindowBase::SetHelpText(const wxString& text)
1271 {
1272 wxHelpProvider *helpProvider = wxHelpProvider::Get();
1273 if ( helpProvider )
1274 {
1275 helpProvider->AddHelp(this, text);
1276 }
1277 }
1278
1279 // associate this help text with all windows with the same id as this
1280 // one
1281 void wxWindowBase::SetHelpTextForId(const wxString& text)
1282 {
1283 wxHelpProvider *helpProvider = wxHelpProvider::Get();
1284 if ( helpProvider )
1285 {
1286 helpProvider->AddHelp(GetId(), text);
1287 }
1288 }
1289
1290 // get the help string associated with this window (may be empty)
1291 wxString wxWindowBase::GetHelpText() const
1292 {
1293 wxString text;
1294 wxHelpProvider *helpProvider = wxHelpProvider::Get();
1295 if ( helpProvider )
1296 {
1297 text = helpProvider->GetHelp(this);
1298 }
1299
1300 return text;
1301 }
1302
1303 // show help for this window
1304 void wxWindowBase::OnHelp(wxHelpEvent& event)
1305 {
1306 wxHelpProvider *helpProvider = wxHelpProvider::Get();
1307 if ( helpProvider )
1308 {
1309 if ( helpProvider->ShowHelp(this) )
1310 {
1311 // skip the event.Skip() below
1312 return;
1313 }
1314 }
1315
1316 event.Skip();
1317 }
1318
1319 #endif // wxUSE_HELP
1320
1321 // ----------------------------------------------------------------------------
1322 // tooltipsroot.Replace("\\", "/");
1323 // ----------------------------------------------------------------------------
1324
1325 #if wxUSE_TOOLTIPS
1326
1327 void wxWindowBase::SetToolTip( const wxString &tip )
1328 {
1329 // don't create the new tooltip if we already have one
1330 if ( m_tooltip )
1331 {
1332 m_tooltip->SetTip( tip );
1333 }
1334 else
1335 {
1336 SetToolTip( new wxToolTip( tip ) );
1337 }
1338
1339 // setting empty tooltip text does not remove the tooltip any more - use
1340 // SetToolTip((wxToolTip *)NULL) for this
1341 }
1342
1343 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1344 {
1345 if ( m_tooltip )
1346 delete m_tooltip;
1347
1348 m_tooltip = tooltip;
1349 }
1350
1351 #endif // wxUSE_TOOLTIPS
1352
1353 // ----------------------------------------------------------------------------
1354 // constraints and sizers
1355 // ----------------------------------------------------------------------------
1356
1357 #if wxUSE_CONSTRAINTS
1358
1359 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1360 {
1361 if ( m_constraints )
1362 {
1363 UnsetConstraints(m_constraints);
1364 delete m_constraints;
1365 }
1366 m_constraints = constraints;
1367 if ( m_constraints )
1368 {
1369 // Make sure other windows know they're part of a 'meaningful relationship'
1370 if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1371 m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1372 if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1373 m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1374 if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1375 m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1376 if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1377 m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1378 if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1379 m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1380 if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1381 m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1382 if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1383 m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1384 if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1385 m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1386 }
1387 }
1388
1389 // This removes any dangling pointers to this window in other windows'
1390 // constraintsInvolvedIn lists.
1391 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1392 {
1393 if ( c )
1394 {
1395 if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1396 c->left.GetOtherWindow()->RemoveConstraintReference(this);
1397 if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1398 c->top.GetOtherWindow()->RemoveConstraintReference(this);
1399 if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1400 c->right.GetOtherWindow()->RemoveConstraintReference(this);
1401 if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1402 c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1403 if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1404 c->width.GetOtherWindow()->RemoveConstraintReference(this);
1405 if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1406 c->height.GetOtherWindow()->RemoveConstraintReference(this);
1407 if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1408 c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
1409 if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
1410 c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
1411 }
1412 }
1413
1414 // Back-pointer to other windows we're involved with, so if we delete this
1415 // window, we must delete any constraints we're involved with.
1416 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
1417 {
1418 if ( !m_constraintsInvolvedIn )
1419 m_constraintsInvolvedIn = new wxWindowList;
1420 if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
1421 m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
1422 }
1423
1424 // REMOVE back-pointer to other windows we're involved with.
1425 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
1426 {
1427 if ( m_constraintsInvolvedIn )
1428 m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
1429 }
1430
1431 // Reset any constraints that mention this window
1432 void wxWindowBase::DeleteRelatedConstraints()
1433 {
1434 if ( m_constraintsInvolvedIn )
1435 {
1436 wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
1437 while (node)
1438 {
1439 wxWindow *win = node->GetData();
1440 wxLayoutConstraints *constr = win->GetConstraints();
1441
1442 // Reset any constraints involving this window
1443 if ( constr )
1444 {
1445 constr->left.ResetIfWin(this);
1446 constr->top.ResetIfWin(this);
1447 constr->right.ResetIfWin(this);
1448 constr->bottom.ResetIfWin(this);
1449 constr->width.ResetIfWin(this);
1450 constr->height.ResetIfWin(this);
1451 constr->centreX.ResetIfWin(this);
1452 constr->centreY.ResetIfWin(this);
1453 }
1454
1455 wxWindowList::compatibility_iterator next = node->GetNext();
1456 m_constraintsInvolvedIn->Erase(node);
1457 node = next;
1458 }
1459
1460 delete m_constraintsInvolvedIn;
1461 m_constraintsInvolvedIn = (wxWindowList *) NULL;
1462 }
1463 }
1464
1465 #endif // wxUSE_CONSTRAINTS
1466
1467 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
1468 {
1469 if ( deleteOld )
1470 delete m_windowSizer;
1471
1472 m_windowSizer = sizer;
1473
1474 SetAutoLayout( sizer != NULL );
1475 }
1476
1477 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
1478 {
1479 SetSizer( sizer, deleteOld );
1480 sizer->SetSizeHints( (wxWindow*) this );
1481 }
1482
1483 #if wxUSE_CONSTRAINTS
1484
1485 void wxWindowBase::SatisfyConstraints()
1486 {
1487 wxLayoutConstraints *constr = GetConstraints();
1488 bool wasOk = constr && constr->AreSatisfied();
1489
1490 ResetConstraints(); // Mark all constraints as unevaluated
1491
1492 int noChanges = 1;
1493
1494 // if we're a top level panel (i.e. our parent is frame/dialog), our
1495 // own constraints will never be satisfied any more unless we do it
1496 // here
1497 if ( wasOk )
1498 {
1499 while ( noChanges > 0 )
1500 {
1501 LayoutPhase1(&noChanges);
1502 }
1503 }
1504
1505 LayoutPhase2(&noChanges);
1506 }
1507
1508 #endif // wxUSE_CONSTRAINTS
1509
1510 bool wxWindowBase::Layout()
1511 {
1512 // If there is a sizer, use it instead of the constraints
1513 if ( GetSizer() )
1514 {
1515 int w, h;
1516 GetVirtualSize(&w, &h);
1517 GetSizer()->SetDimension( 0, 0, w, h );
1518 }
1519 #if wxUSE_CONSTRAINTS
1520 else
1521 {
1522 SatisfyConstraints(); // Find the right constraints values
1523 SetConstraintSizes(); // Recursively set the real window sizes
1524 }
1525 #endif
1526
1527 return true;
1528 }
1529
1530 #if wxUSE_CONSTRAINTS
1531
1532 // first phase of the constraints evaluation: set our own constraints
1533 bool wxWindowBase::LayoutPhase1(int *noChanges)
1534 {
1535 wxLayoutConstraints *constr = GetConstraints();
1536
1537 return !constr || constr->SatisfyConstraints(this, noChanges);
1538 }
1539
1540 // second phase: set the constraints for our children
1541 bool wxWindowBase::LayoutPhase2(int *noChanges)
1542 {
1543 *noChanges = 0;
1544
1545 // Layout children
1546 DoPhase(1);
1547
1548 // Layout grand children
1549 DoPhase(2);
1550
1551 return true;
1552 }
1553
1554 // Do a phase of evaluating child constraints
1555 bool wxWindowBase::DoPhase(int phase)
1556 {
1557 // the list containing the children for which the constraints are already
1558 // set correctly
1559 wxWindowList succeeded;
1560
1561 // the max number of iterations we loop before concluding that we can't set
1562 // the constraints
1563 static const int maxIterations = 500;
1564
1565 for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
1566 {
1567 int noChanges = 0;
1568
1569 // loop over all children setting their constraints
1570 for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1571 node;
1572 node = node->GetNext() )
1573 {
1574 wxWindow *child = node->GetData();
1575 if ( child->IsTopLevel() )
1576 {
1577 // top level children are not inside our client area
1578 continue;
1579 }
1580
1581 if ( !child->GetConstraints() || succeeded.Find(child) )
1582 {
1583 // this one is either already ok or nothing we can do about it
1584 continue;
1585 }
1586
1587 int tempNoChanges = 0;
1588 bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
1589 : child->LayoutPhase2(&tempNoChanges);
1590 noChanges += tempNoChanges;
1591
1592 if ( success )
1593 {
1594 succeeded.Append(child);
1595 }
1596 }
1597
1598 if ( !noChanges )
1599 {
1600 // constraints are set
1601 break;
1602 }
1603 }
1604
1605 return true;
1606 }
1607
1608 void wxWindowBase::ResetConstraints()
1609 {
1610 wxLayoutConstraints *constr = GetConstraints();
1611 if ( constr )
1612 {
1613 constr->left.SetDone(false);
1614 constr->top.SetDone(false);
1615 constr->right.SetDone(false);
1616 constr->bottom.SetDone(false);
1617 constr->width.SetDone(false);
1618 constr->height.SetDone(false);
1619 constr->centreX.SetDone(false);
1620 constr->centreY.SetDone(false);
1621 }
1622
1623 wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1624 while (node)
1625 {
1626 wxWindow *win = node->GetData();
1627 if ( !win->IsTopLevel() )
1628 win->ResetConstraints();
1629 node = node->GetNext();
1630 }
1631 }
1632
1633 // Need to distinguish between setting the 'fake' size for windows and sizers,
1634 // and setting the real values.
1635 void wxWindowBase::SetConstraintSizes(bool recurse)
1636 {
1637 wxLayoutConstraints *constr = GetConstraints();
1638 if ( constr && constr->AreSatisfied() )
1639 {
1640 int x = constr->left.GetValue();
1641 int y = constr->top.GetValue();
1642 int w = constr->width.GetValue();
1643 int h = constr->height.GetValue();
1644
1645 if ( (constr->width.GetRelationship() != wxAsIs ) ||
1646 (constr->height.GetRelationship() != wxAsIs) )
1647 {
1648 SetSize(x, y, w, h);
1649 }
1650 else
1651 {
1652 // If we don't want to resize this window, just move it...
1653 Move(x, y);
1654 }
1655 }
1656 else if ( constr )
1657 {
1658 wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
1659 GetClassInfo()->GetClassName(),
1660 GetName().c_str());
1661 }
1662
1663 if ( recurse )
1664 {
1665 wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1666 while (node)
1667 {
1668 wxWindow *win = node->GetData();
1669 if ( !win->IsTopLevel() && win->GetConstraints() )
1670 win->SetConstraintSizes();
1671 node = node->GetNext();
1672 }
1673 }
1674 }
1675
1676 // Only set the size/position of the constraint (if any)
1677 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
1678 {
1679 wxLayoutConstraints *constr = GetConstraints();
1680 if ( constr )
1681 {
1682 if ( x != -1 )
1683 {
1684 constr->left.SetValue(x);
1685 constr->left.SetDone(true);
1686 }
1687 if ( y != -1 )
1688 {
1689 constr->top.SetValue(y);
1690 constr->top.SetDone(true);
1691 }
1692 if ( w != -1 )
1693 {
1694 constr->width.SetValue(w);
1695 constr->width.SetDone(true);
1696 }
1697 if ( h != -1 )
1698 {
1699 constr->height.SetValue(h);
1700 constr->height.SetDone(true);
1701 }
1702 }
1703 }
1704
1705 void wxWindowBase::MoveConstraint(int x, int y)
1706 {
1707 wxLayoutConstraints *constr = GetConstraints();
1708 if ( constr )
1709 {
1710 if ( x != -1 )
1711 {
1712 constr->left.SetValue(x);
1713 constr->left.SetDone(true);
1714 }
1715 if ( y != -1 )
1716 {
1717 constr->top.SetValue(y);
1718 constr->top.SetDone(true);
1719 }
1720 }
1721 }
1722
1723 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
1724 {
1725 wxLayoutConstraints *constr = GetConstraints();
1726 if ( constr )
1727 {
1728 *w = constr->width.GetValue();
1729 *h = constr->height.GetValue();
1730 }
1731 else
1732 GetSize(w, h);
1733 }
1734
1735 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
1736 {
1737 wxLayoutConstraints *constr = GetConstraints();
1738 if ( constr )
1739 {
1740 *w = constr->width.GetValue();
1741 *h = constr->height.GetValue();
1742 }
1743 else
1744 GetClientSize(w, h);
1745 }
1746
1747 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
1748 {
1749 wxLayoutConstraints *constr = GetConstraints();
1750 if ( constr )
1751 {
1752 *x = constr->left.GetValue();
1753 *y = constr->top.GetValue();
1754 }
1755 else
1756 GetPosition(x, y);
1757 }
1758
1759 #endif // wxUSE_CONSTRAINTS
1760
1761 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
1762 {
1763 // don't do it for the dialogs/frames - they float independently of their
1764 // parent
1765 if ( !IsTopLevel() )
1766 {
1767 wxWindow *parent = GetParent();
1768 if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
1769 {
1770 wxPoint pt(parent->GetClientAreaOrigin());
1771 x += pt.x;
1772 y += pt.y;
1773 }
1774 }
1775 }
1776
1777 // ----------------------------------------------------------------------------
1778 // do Update UI processing for child controls
1779 // ----------------------------------------------------------------------------
1780
1781 void wxWindowBase::UpdateWindowUI(long flags)
1782 {
1783 wxUpdateUIEvent event(GetId());
1784 event.m_eventObject = this;
1785
1786 if ( GetEventHandler()->ProcessEvent(event) )
1787 {
1788 DoUpdateWindowUI(event);
1789 }
1790
1791 if (flags & wxUPDATE_UI_RECURSE)
1792 {
1793 wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1794 while (node)
1795 {
1796 wxWindow* child = (wxWindow*) node->GetData();
1797 child->UpdateWindowUI(flags);
1798 node = node->GetNext();
1799 }
1800 }
1801 }
1802
1803 // do the window-specific processing after processing the update event
1804 // TODO: take specific knowledge out of this function and
1805 // put in each control's base class. Unfortunately we don't
1806 // yet have base implementation files for wxCheckBox and wxRadioButton.
1807 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
1808 {
1809 if ( event.GetSetEnabled() )
1810 Enable(event.GetEnabled());
1811
1812 #if wxUSE_CONTROLS
1813 if ( event.GetSetText() )
1814 {
1815 wxControl *control = wxDynamicCastThis(wxControl);
1816 if ( control )
1817 {
1818 if ( event.GetText() != control->GetLabel() )
1819 control->SetLabel(event.GetText());
1820 }
1821 #if wxUSE_CHECKBOX
1822 wxCheckBox *checkbox = wxDynamicCastThis(wxCheckBox);
1823 if ( checkbox )
1824 {
1825 if ( event.GetSetChecked() )
1826 checkbox->SetValue(event.GetChecked());
1827 }
1828 #endif // wxUSE_CHECKBOX
1829
1830 #if wxUSE_RADIOBTN
1831 wxRadioButton *radiobtn = wxDynamicCastThis(wxRadioButton);
1832 if ( radiobtn )
1833 {
1834 if ( event.GetSetChecked() )
1835 radiobtn->SetValue(event.GetChecked());
1836 }
1837 #endif // wxUSE_RADIOBTN
1838 }
1839 #endif
1840 }
1841
1842 #if 0
1843 // call internal idle recursively
1844 // may be obsolete (wait until OnIdle scheme stabilises)
1845 void wxWindowBase::ProcessInternalIdle()
1846 {
1847 OnInternalIdle();
1848
1849 wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1850 while (node)
1851 {
1852 wxWindow *child = node->GetData();
1853 child->ProcessInternalIdle();
1854 node = node->GetNext();
1855 }
1856 }
1857 #endif
1858
1859 // ----------------------------------------------------------------------------
1860 // dialog units translations
1861 // ----------------------------------------------------------------------------
1862
1863 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
1864 {
1865 int charWidth = GetCharWidth();
1866 int charHeight = GetCharHeight();
1867 wxPoint pt2(-1, -1);
1868 if (pt.x != -1)
1869 pt2.x = (int) ((pt.x * 4) / charWidth) ;
1870 if (pt.y != -1)
1871 pt2.y = (int) ((pt.y * 8) / charHeight) ;
1872
1873 return pt2;
1874 }
1875
1876 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
1877 {
1878 int charWidth = GetCharWidth();
1879 int charHeight = GetCharHeight();
1880 wxPoint pt2(-1, -1);
1881 if (pt.x != -1)
1882 pt2.x = (int) ((pt.x * charWidth) / 4) ;
1883 if (pt.y != -1)
1884 pt2.y = (int) ((pt.y * charHeight) / 8) ;
1885
1886 return pt2;
1887 }
1888
1889 // ----------------------------------------------------------------------------
1890 // event handlers
1891 // ----------------------------------------------------------------------------
1892
1893 // propagate the colour change event to the subwindows
1894 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
1895 {
1896 wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1897 while ( node )
1898 {
1899 // Only propagate to non-top-level windows
1900 wxWindow *win = node->GetData();
1901 if ( !win->IsTopLevel() )
1902 {
1903 wxSysColourChangedEvent event2;
1904 event.m_eventObject = win;
1905 win->GetEventHandler()->ProcessEvent(event2);
1906 }
1907
1908 node = node->GetNext();
1909 }
1910 }
1911
1912 // the default action is to populate dialog with data when it's created,
1913 // and nudge the UI into displaying itself correctly in case
1914 // we've turned the wxUpdateUIEvents frequency down low.
1915 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
1916 {
1917 TransferDataToWindow();
1918
1919 // Update the UI at this point
1920 UpdateWindowUI(wxUPDATE_UI_RECURSE);
1921 }
1922
1923 // process Ctrl-Alt-mclick
1924 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
1925 {
1926 #if wxUSE_MSGDLG
1927 if ( event.ControlDown() && event.AltDown() )
1928 {
1929 // don't translate these strings
1930 wxString port;
1931
1932 #ifdef __WXUNIVERSAL__
1933 port = _T("Univ/");
1934 #endif // __WXUNIVERSAL__
1935
1936 switch ( wxGetOsVersion() )
1937 {
1938 case wxMOTIF_X: port += _T("Motif"); break;
1939 case wxMAC:
1940 case wxMAC_DARWIN: port += _T("Mac"); break;
1941 case wxBEOS: port += _T("BeOS"); break;
1942 case wxGTK:
1943 case wxGTK_WIN32:
1944 case wxGTK_OS2:
1945 case wxGTK_BEOS: port += _T("GTK"); break;
1946 case wxWINDOWS:
1947 case wxPENWINDOWS:
1948 case wxWINDOWS_NT:
1949 case wxWIN32S:
1950 case wxWIN95:
1951 case wxWIN386: port += _T("MS Windows"); break;
1952 case wxMGL_UNIX:
1953 case wxMGL_X:
1954 case wxMGL_WIN32:
1955 case wxMGL_OS2: port += _T("MGL"); break;
1956 case wxWINDOWS_OS2:
1957 case wxOS2_PM: port += _T("OS/2"); break;
1958 default: port += _T("unknown"); break;
1959 }
1960
1961 wxMessageBox(wxString::Format(
1962 _T(
1963 " wxWindows Library (%s port)\nVersion %u.%u.%u%s, compiled at %s %s\n Copyright (c) 1995-2002 wxWindows team"
1964 ),
1965 port.c_str(),
1966 wxMAJOR_VERSION,
1967 wxMINOR_VERSION,
1968 wxRELEASE_NUMBER,
1969 #if wxUSE_UNICODE
1970 L" (Unicode)",
1971 #else
1972 "",
1973 #endif
1974 __TDATE__,
1975 __TTIME__
1976 ),
1977 _T("wxWindows information"),
1978 wxICON_INFORMATION | wxOK,
1979 (wxWindow *)this);
1980 }
1981 else
1982 #endif // wxUSE_MSGDLG
1983 {
1984 event.Skip();
1985 }
1986 }
1987
1988 // ----------------------------------------------------------------------------
1989 // accessibility
1990 // ----------------------------------------------------------------------------
1991
1992 #if wxUSE_ACCESSIBILITY
1993 void wxWindowBase::SetAccessible(wxAccessible* accessible)
1994 {
1995 if (m_accessible && (accessible != m_accessible))
1996 delete m_accessible;
1997 m_accessible = accessible;
1998 if (m_accessible)
1999 m_accessible->SetWindow((wxWindow*) this);
2000 }
2001
2002 // Returns the accessible object, creating if necessary.
2003 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2004 {
2005 if (!m_accessible)
2006 m_accessible = CreateAccessible();
2007 return m_accessible;
2008 }
2009
2010 // Override to create a specific accessible object.
2011 wxAccessible* wxWindowBase::CreateAccessible()
2012 {
2013 return new wxWindowAccessible((wxWindow*) this);
2014 }
2015
2016 #endif
2017
2018 #if !wxUSE_STL
2019 // ----------------------------------------------------------------------------
2020 // list classes implementation
2021 // ----------------------------------------------------------------------------
2022
2023 void wxWindowListNode::DeleteData()
2024 {
2025 delete (wxWindow *)GetData();
2026 }
2027 #endif
2028
2029 // ----------------------------------------------------------------------------
2030 // borders
2031 // ----------------------------------------------------------------------------
2032
2033 wxBorder wxWindowBase::GetBorder(long flags) const
2034 {
2035 wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2036 if ( border == wxBORDER_DEFAULT )
2037 {
2038 border = GetDefaultBorder();
2039 }
2040
2041 return border;
2042 }
2043
2044 wxBorder wxWindowBase::GetDefaultBorder() const
2045 {
2046 return wxBORDER_NONE;
2047 }
2048
2049 // ----------------------------------------------------------------------------
2050 // hit testing
2051 // ----------------------------------------------------------------------------
2052
2053 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2054 {
2055 // here we just check if the point is inside the window or not
2056
2057 // check the top and left border first
2058 bool outside = x < 0 || y < 0;
2059 if ( !outside )
2060 {
2061 // check the right and bottom borders too
2062 wxSize size = GetSize();
2063 outside = x >= size.x || y >= size.y;
2064 }
2065
2066 return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2067 }
2068
2069 // ----------------------------------------------------------------------------
2070 // mouse capture
2071 // ----------------------------------------------------------------------------
2072
2073 struct WXDLLEXPORT wxWindowNext
2074 {
2075 wxWindow *win;
2076 wxWindowNext *next;
2077 } *wxWindowBase::ms_winCaptureNext = NULL;
2078
2079 void wxWindowBase::CaptureMouse()
2080 {
2081 wxLogTrace(_T("mousecapture"), _T("CaptureMouse(%p)"), this);
2082
2083 wxWindow *winOld = GetCapture();
2084 if ( winOld )
2085 {
2086 ((wxWindowBase*) winOld)->DoReleaseMouse();
2087
2088 // save it on stack
2089 wxWindowNext *item = new wxWindowNext;
2090 item->win = winOld;
2091 item->next = ms_winCaptureNext;
2092 ms_winCaptureNext = item;
2093 }
2094 //else: no mouse capture to save
2095
2096 DoCaptureMouse();
2097 }
2098
2099 void wxWindowBase::ReleaseMouse()
2100 {
2101 wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(%p)"), this);
2102
2103 wxASSERT_MSG( GetCapture() == this, wxT("attempt to release mouse, but this window hasn't captured it") );
2104
2105 DoReleaseMouse();
2106
2107 if ( ms_winCaptureNext )
2108 {
2109 ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2110
2111 wxWindowNext *item = ms_winCaptureNext;
2112 ms_winCaptureNext = item->next;
2113 delete item;
2114 }
2115 //else: stack is empty, no previous capture
2116
2117 wxLogTrace(_T("mousecapture"),
2118 (const wxChar *) _T("After ReleaseMouse() mouse is captured by %p"),
2119 GetCapture());
2120 }
2121
2122 #if wxUSE_HOTKEY
2123
2124 bool
2125 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2126 int WXUNUSED(modifiers),
2127 int WXUNUSED(keycode))
2128 {
2129 // not implemented
2130 return false;
2131 }
2132
2133 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2134 {
2135 // not implemented
2136 return false;
2137 }
2138
2139 #endif // wxUSE_HOTKEY
2140
2141 void wxWindowBase::SendDestroyEvent()
2142 {
2143 wxWindowDestroyEvent event;
2144 event.SetEventObject(this);
2145 event.SetId(GetId());
2146 GetEventHandler()->ProcessEvent(event);
2147 }
2148
2149 // ----------------------------------------------------------------------------
2150 // event processing
2151 // ----------------------------------------------------------------------------
2152
2153 bool wxWindowBase::TryValidator(wxEvent& wxVALIDATOR_PARAM(event))
2154 {
2155 #if wxUSE_VALIDATORS
2156 // Can only use the validator of the window which
2157 // is receiving the event
2158 if ( event.GetEventObject() == this )
2159 {
2160 wxValidator *validator = GetValidator();
2161 if ( validator && validator->ProcessEvent(event) )
2162 {
2163 return true;
2164 }
2165 }
2166 #endif // wxUSE_VALIDATORS
2167
2168 return false;
2169 }
2170
2171 bool wxWindowBase::TryParent(wxEvent& event)
2172 {
2173 // carry on up the parent-child hierarchy if the propgation count hasn't
2174 // reached zero yet
2175 if ( event.ShouldPropagate() )
2176 {
2177 // honour the requests to stop propagation at this window: this is
2178 // used by the dialogs, for example, to prevent processing the events
2179 // from the dialog controls in the parent frame which rarely, if ever,
2180 // makes sense
2181 if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
2182 {
2183 wxWindow *parent = GetParent();
2184 if ( parent && !parent->IsBeingDeleted() )
2185 {
2186 wxPropagateOnce propagateOnce(event);
2187
2188 return parent->GetEventHandler()->ProcessEvent(event);
2189 }
2190 }
2191 }
2192
2193 return wxEvtHandler::TryParent(event);
2194 }
2195
2196 // ----------------------------------------------------------------------------
2197 // global functions
2198 // ----------------------------------------------------------------------------
2199
2200 wxWindow* wxGetTopLevelParent(wxWindow *win)
2201 {
2202 while ( win && !win->IsTopLevel() )
2203 win = win->GetParent();
2204
2205 return win;
2206 }
2207
2208 #if wxUSE_ACCESSIBILITY
2209 // ----------------------------------------------------------------------------
2210 // accessible object for windows
2211 // ----------------------------------------------------------------------------
2212
2213 // Can return either a child object, or an integer
2214 // representing the child element, starting from 1.
2215 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
2216 {
2217 wxASSERT( GetWindow() != NULL );
2218 if (!GetWindow())
2219 return wxACC_FAIL;
2220
2221 return wxACC_NOT_IMPLEMENTED;
2222 }
2223
2224 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
2225 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
2226 {
2227 wxASSERT( GetWindow() != NULL );
2228 if (!GetWindow())
2229 return wxACC_FAIL;
2230
2231 wxWindow* win = NULL;
2232 if (elementId == 0)
2233 {
2234 win = GetWindow();
2235 }
2236 else
2237 {
2238 if (elementId <= (int) GetWindow()->GetChildren().GetCount())
2239 {
2240 win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
2241 }
2242 else
2243 return wxACC_FAIL;
2244 }
2245 if (win)
2246 {
2247 rect = win->GetRect();
2248 if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
2249 rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
2250 return wxACC_OK;
2251 }
2252
2253 return wxACC_NOT_IMPLEMENTED;
2254 }
2255
2256 // Navigates from fromId to toId/toObject.
2257 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
2258 int* WXUNUSED(toId), wxAccessible** toObject)
2259 {
2260 wxASSERT( GetWindow() != NULL );
2261 if (!GetWindow())
2262 return wxACC_FAIL;
2263
2264 switch (navDir)
2265 {
2266 case wxNAVDIR_FIRSTCHILD:
2267 {
2268 if (GetWindow()->GetChildren().GetCount() == 0)
2269 return wxACC_FALSE;
2270 wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
2271 *toObject = childWindow->GetOrCreateAccessible();
2272
2273 return wxACC_OK;
2274 }
2275 case wxNAVDIR_LASTCHILD:
2276 {
2277 if (GetWindow()->GetChildren().GetCount() == 0)
2278 return wxACC_FALSE;
2279 wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
2280 *toObject = childWindow->GetOrCreateAccessible();
2281
2282 return wxACC_OK;
2283 }
2284 case wxNAVDIR_RIGHT:
2285 case wxNAVDIR_DOWN:
2286 case wxNAVDIR_NEXT:
2287 {
2288 wxWindowList::compatibility_iterator node =
2289 wxWindowList::compatibility_iterator();
2290 if (fromId == 0)
2291 {
2292 // Can't navigate to sibling of this window
2293 // if we're a top-level window.
2294 if (!GetWindow()->GetParent())
2295 return wxACC_NOT_IMPLEMENTED;
2296
2297 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2298 }
2299 else
2300 {
2301 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2302 node = GetWindow()->GetChildren().Item(fromId-1);
2303 }
2304
2305 if (node && node->GetNext())
2306 {
2307 wxWindow* nextWindow = node->GetNext()->GetData();
2308 *toObject = nextWindow->GetOrCreateAccessible();
2309 return wxACC_OK;
2310 }
2311 else
2312 return wxACC_FALSE;
2313 }
2314 case wxNAVDIR_LEFT:
2315 case wxNAVDIR_UP:
2316 case wxNAVDIR_PREVIOUS:
2317 {
2318 wxWindowList::compatibility_iterator node =
2319 wxWindowList::compatibility_iterator();
2320 if (fromId == 0)
2321 {
2322 // Can't navigate to sibling of this window
2323 // if we're a top-level window.
2324 if (!GetWindow()->GetParent())
2325 return wxACC_NOT_IMPLEMENTED;
2326
2327 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2328 }
2329 else
2330 {
2331 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2332 node = GetWindow()->GetChildren().Item(fromId-1);
2333 }
2334
2335 if (node && node->GetPrevious())
2336 {
2337 wxWindow* previousWindow = node->GetPrevious()->GetData();
2338 *toObject = previousWindow->GetOrCreateAccessible();
2339 return wxACC_OK;
2340 }
2341 else
2342 return wxACC_FALSE;
2343 }
2344 }
2345
2346 return wxACC_NOT_IMPLEMENTED;
2347 }
2348
2349 // Gets the name of the specified object.
2350 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
2351 {
2352 wxASSERT( GetWindow() != NULL );
2353 if (!GetWindow())
2354 return wxACC_FAIL;
2355
2356 wxString title;
2357
2358 // If a child, leave wxWindows to call the function on the actual
2359 // child object.
2360 if (childId > 0)
2361 return wxACC_NOT_IMPLEMENTED;
2362
2363 // This will eventually be replaced by specialised
2364 // accessible classes, one for each kind of wxWindows
2365 // control or window.
2366 if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
2367 title = ((wxButton*) GetWindow())->GetLabel();
2368 else
2369 title = GetWindow()->GetName();
2370
2371 if (!title.IsEmpty())
2372 {
2373 *name = title;
2374 return wxACC_OK;
2375 }
2376 else
2377 return wxACC_NOT_IMPLEMENTED;
2378 }
2379
2380 // Gets the number of children.
2381 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
2382 {
2383 wxASSERT( GetWindow() != NULL );
2384 if (!GetWindow())
2385 return wxACC_FAIL;
2386
2387 *childId = (int) GetWindow()->GetChildren().GetCount();
2388 return wxACC_OK;
2389 }
2390
2391 // Gets the specified child (starting from 1).
2392 // If *child is NULL and return value is wxACC_OK,
2393 // this means that the child is a simple element and
2394 // not an accessible object.
2395 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
2396 {
2397 wxASSERT( GetWindow() != NULL );
2398 if (!GetWindow())
2399 return wxACC_FAIL;
2400
2401 if (childId == 0)
2402 {
2403 *child = this;
2404 return wxACC_OK;
2405 }
2406
2407 if (childId > (int) GetWindow()->GetChildren().GetCount())
2408 return wxACC_FAIL;
2409
2410 wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
2411 *child = childWindow->GetOrCreateAccessible();
2412 if (*child)
2413 return wxACC_OK;
2414 else
2415 return wxACC_FAIL;
2416 }
2417
2418 // Gets the parent, or NULL.
2419 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
2420 {
2421 wxASSERT( GetWindow() != NULL );
2422 if (!GetWindow())
2423 return wxACC_FAIL;
2424
2425 wxWindow* parentWindow = GetWindow()->GetParent();
2426 if (!parentWindow)
2427 {
2428 *parent = NULL;
2429 return wxACC_OK;
2430 }
2431 else
2432 {
2433 *parent = parentWindow->GetOrCreateAccessible();
2434 if (*parent)
2435 return wxACC_OK;
2436 else
2437 return wxACC_FAIL;
2438 }
2439 }
2440
2441 // Performs the default action. childId is 0 (the action for this object)
2442 // or > 0 (the action for a child).
2443 // Return wxACC_NOT_SUPPORTED if there is no default action for this
2444 // window (e.g. an edit control).
2445 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
2446 {
2447 wxASSERT( GetWindow() != NULL );
2448 if (!GetWindow())
2449 return wxACC_FAIL;
2450
2451 return wxACC_NOT_IMPLEMENTED;
2452 }
2453
2454 // Gets the default action for this object (0) or > 0 (the action for a child).
2455 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
2456 // string if there is no action.
2457 // The retrieved string describes the action that is performed on an object,
2458 // not what the object does as a result. For example, a toolbar button that prints
2459 // a document has a default action of "Press" rather than "Prints the current document."
2460 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
2461 {
2462 wxASSERT( GetWindow() != NULL );
2463 if (!GetWindow())
2464 return wxACC_FAIL;
2465
2466 return wxACC_NOT_IMPLEMENTED;
2467 }
2468
2469 // Returns the description for this object or a child.
2470 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
2471 {
2472 wxASSERT( GetWindow() != NULL );
2473 if (!GetWindow())
2474 return wxACC_FAIL;
2475
2476 wxString ht(GetWindow()->GetHelpText());
2477 if (!ht.IsEmpty())
2478 {
2479 *description = ht;
2480 return wxACC_OK;
2481 }
2482 return wxACC_NOT_IMPLEMENTED;
2483 }
2484
2485 // Returns help text for this object or a child, similar to tooltip text.
2486 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
2487 {
2488 wxASSERT( GetWindow() != NULL );
2489 if (!GetWindow())
2490 return wxACC_FAIL;
2491
2492 wxString ht(GetWindow()->GetHelpText());
2493 if (!ht.IsEmpty())
2494 {
2495 *helpText = ht;
2496 return wxACC_OK;
2497 }
2498 return wxACC_NOT_IMPLEMENTED;
2499 }
2500
2501 // Returns the keyboard shortcut for this object or child.
2502 // Return e.g. ALT+K
2503 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
2504 {
2505 wxASSERT( GetWindow() != NULL );
2506 if (!GetWindow())
2507 return wxACC_FAIL;
2508
2509 return wxACC_NOT_IMPLEMENTED;
2510 }
2511
2512 // Returns a role constant.
2513 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
2514 {
2515 wxASSERT( GetWindow() != NULL );
2516 if (!GetWindow())
2517 return wxACC_FAIL;
2518
2519 // If a child, leave wxWindows to call the function on the actual
2520 // child object.
2521 if (childId > 0)
2522 return wxACC_NOT_IMPLEMENTED;
2523
2524 if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2525 return wxACC_NOT_IMPLEMENTED;
2526 #if wxUSE_STATUSBAR
2527 if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2528 return wxACC_NOT_IMPLEMENTED;
2529 #endif
2530 #if wxUSE_TOOLBAR
2531 if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2532 return wxACC_NOT_IMPLEMENTED;
2533 #endif
2534
2535 //*role = wxROLE_SYSTEM_CLIENT;
2536 *role = wxROLE_SYSTEM_CLIENT;
2537 return wxACC_OK;
2538
2539 #if 0
2540 return wxACC_NOT_IMPLEMENTED;
2541 #endif
2542 }
2543
2544 // Returns a state constant.
2545 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
2546 {
2547 wxASSERT( GetWindow() != NULL );
2548 if (!GetWindow())
2549 return wxACC_FAIL;
2550
2551 // If a child, leave wxWindows to call the function on the actual
2552 // child object.
2553 if (childId > 0)
2554 return wxACC_NOT_IMPLEMENTED;
2555
2556 if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2557 return wxACC_NOT_IMPLEMENTED;
2558
2559 #if wxUSE_STATUSBAR
2560 if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2561 return wxACC_NOT_IMPLEMENTED;
2562 #endif
2563 #if wxUSE_TOOLBAR
2564 if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2565 return wxACC_NOT_IMPLEMENTED;
2566 #endif
2567
2568 *state = 0;
2569 return wxACC_OK;
2570
2571 #if 0
2572 return wxACC_NOT_IMPLEMENTED;
2573 #endif
2574 }
2575
2576 // Returns a localized string representing the value for the object
2577 // or child.
2578 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
2579 {
2580 wxASSERT( GetWindow() != NULL );
2581 if (!GetWindow())
2582 return wxACC_FAIL;
2583
2584 return wxACC_NOT_IMPLEMENTED;
2585 }
2586
2587 // Selects the object or child.
2588 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
2589 {
2590 wxASSERT( GetWindow() != NULL );
2591 if (!GetWindow())
2592 return wxACC_FAIL;
2593
2594 return wxACC_NOT_IMPLEMENTED;
2595 }
2596
2597 // Gets the window with the keyboard focus.
2598 // If childId is 0 and child is NULL, no object in
2599 // this subhierarchy has the focus.
2600 // If this object has the focus, child should be 'this'.
2601 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
2602 {
2603 wxASSERT( GetWindow() != NULL );
2604 if (!GetWindow())
2605 return wxACC_FAIL;
2606
2607 return wxACC_NOT_IMPLEMENTED;
2608 }
2609
2610 // Gets a variant representing the selected children
2611 // of this object.
2612 // Acceptable values:
2613 // - a null variant (IsNull() returns TRUE)
2614 // - a list variant (GetType() == wxT("list")
2615 // - an integer representing the selected child element,
2616 // or 0 if this object is selected (GetType() == wxT("long")
2617 // - a "void*" pointer to a wxAccessible child object
2618 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
2619 {
2620 wxASSERT( GetWindow() != NULL );
2621 if (!GetWindow())
2622 return wxACC_FAIL;
2623
2624 return wxACC_NOT_IMPLEMENTED;
2625 }
2626
2627 #endif // wxUSE_ACCESSIBILITY
wxWidgets (Impactor)