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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__)
81int wxWindowBase::ms_lastControlId = 2000;
82#else
83int wxWindowBase::ms_lastControlId = -200;
84#endif
85
86IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
87
88// ----------------------------------------------------------------------------
89// event table
90// ----------------------------------------------------------------------------
91
92BEGIN_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
101END_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
112wxWindowBase::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
200bool 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
252wxWindowBase::~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
321bool wxWindowBase::Destroy()
322{
323 delete this;
324
325 return true;
326}
327
328bool 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
339bool 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
369void 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
484void 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
494void 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
503wxSize 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
602wxPoint wxWindowBase::GetClientAreaOrigin() const
603{
604 return wxPoint(0, 0);
605}
606
607// set the min/max size of the window
608void 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
624void 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
633void 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
647wxSize 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
659bool 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
673bool 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
690bool wxWindowBase::IsTopLevel() const
691{
692 return false;
693}
694
695// ----------------------------------------------------------------------------
696// reparenting the window
697// ----------------------------------------------------------------------------
698
699void 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
712void 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
720bool 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
756void 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
768wxEvtHandler *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
790bool 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
835bool 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
847bool 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
859bool 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
874bool 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
894void 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
904wxWindow *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
918void 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
940void 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
956wxRect 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
968bool wxWindowBase::IsExposed(int x, int y) const
969{
970 return m_updateRegion.Contains(x, y) != wxOutRegion;
971}
972
973bool wxWindowBase::IsExposed(int x, int y, int w, int h) const
974{
975 return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
976}
977
978void 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
993wxWindow *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
1009wxWindow *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
1033typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1034 const wxString& label, long id);
1035
1036static
1037bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1038 long WXUNUSED(id))
1039{
1040 return win->GetLabel() == label;
1041}
1042
1043static
1044bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1045 long WXUNUSED(id))
1046{
1047 return win->GetName() == label;
1048}
1049
1050static
1051bool 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
1058static
1059wxWindow *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()
1088static
1089wxWindow *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 */
1116wxWindow *
1117wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1118{
1119 return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1120}
1121
1122/* static */
1123wxWindow *
1124wxWindowBase::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 */
1138wxWindow *
1139wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1140{
1141 return wxFindWindowHelper(parent, _T(""), id, wxFindWindowCmpIds);
1142}
1143
1144// ----------------------------------------------------------------------------
1145// dialog oriented functions
1146// ----------------------------------------------------------------------------
1147
1148void 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
1165bool 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
1190bool 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
1224bool 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
1256void 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
1270void 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
1281void 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)
1291wxString 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
1304void 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
1327void 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
1343void 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
1359void 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.
1391void 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.
1416void 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.
1425void 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
1432void 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
1467void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
1468{
1469 if ( sizer == m_windowSizer)
1470 return;
1471
1472 if ( deleteOld )
1473 delete m_windowSizer;
1474
1475 m_windowSizer = sizer;
1476
1477 SetAutoLayout( sizer != NULL );
1478}
1479
1480void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
1481{
1482 SetSizer( sizer, deleteOld );
1483 sizer->SetSizeHints( (wxWindow*) this );
1484}
1485
1486#if wxUSE_CONSTRAINTS
1487
1488void wxWindowBase::SatisfyConstraints()
1489{
1490 wxLayoutConstraints *constr = GetConstraints();
1491 bool wasOk = constr && constr->AreSatisfied();
1492
1493 ResetConstraints(); // Mark all constraints as unevaluated
1494
1495 int noChanges = 1;
1496
1497 // if we're a top level panel (i.e. our parent is frame/dialog), our
1498 // own constraints will never be satisfied any more unless we do it
1499 // here
1500 if ( wasOk )
1501 {
1502 while ( noChanges > 0 )
1503 {
1504 LayoutPhase1(&noChanges);
1505 }
1506 }
1507
1508 LayoutPhase2(&noChanges);
1509}
1510
1511#endif // wxUSE_CONSTRAINTS
1512
1513bool wxWindowBase::Layout()
1514{
1515 // If there is a sizer, use it instead of the constraints
1516 if ( GetSizer() )
1517 {
1518 int w, h;
1519 GetVirtualSize(&w, &h);
1520 GetSizer()->SetDimension( 0, 0, w, h );
1521 }
1522#if wxUSE_CONSTRAINTS
1523 else
1524 {
1525 SatisfyConstraints(); // Find the right constraints values
1526 SetConstraintSizes(); // Recursively set the real window sizes
1527 }
1528#endif
1529
1530 return true;
1531}
1532
1533#if wxUSE_CONSTRAINTS
1534
1535// first phase of the constraints evaluation: set our own constraints
1536bool wxWindowBase::LayoutPhase1(int *noChanges)
1537{
1538 wxLayoutConstraints *constr = GetConstraints();
1539
1540 return !constr || constr->SatisfyConstraints(this, noChanges);
1541}
1542
1543// second phase: set the constraints for our children
1544bool wxWindowBase::LayoutPhase2(int *noChanges)
1545{
1546 *noChanges = 0;
1547
1548 // Layout children
1549 DoPhase(1);
1550
1551 // Layout grand children
1552 DoPhase(2);
1553
1554 return true;
1555}
1556
1557// Do a phase of evaluating child constraints
1558bool wxWindowBase::DoPhase(int phase)
1559{
1560 // the list containing the children for which the constraints are already
1561 // set correctly
1562 wxWindowList succeeded;
1563
1564 // the max number of iterations we loop before concluding that we can't set
1565 // the constraints
1566 static const int maxIterations = 500;
1567
1568 for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
1569 {
1570 int noChanges = 0;
1571
1572 // loop over all children setting their constraints
1573 for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1574 node;
1575 node = node->GetNext() )
1576 {
1577 wxWindow *child = node->GetData();
1578 if ( child->IsTopLevel() )
1579 {
1580 // top level children are not inside our client area
1581 continue;
1582 }
1583
1584 if ( !child->GetConstraints() || succeeded.Find(child) )
1585 {
1586 // this one is either already ok or nothing we can do about it
1587 continue;
1588 }
1589
1590 int tempNoChanges = 0;
1591 bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
1592 : child->LayoutPhase2(&tempNoChanges);
1593 noChanges += tempNoChanges;
1594
1595 if ( success )
1596 {
1597 succeeded.Append(child);
1598 }
1599 }
1600
1601 if ( !noChanges )
1602 {
1603 // constraints are set
1604 break;
1605 }
1606 }
1607
1608 return true;
1609}
1610
1611void wxWindowBase::ResetConstraints()
1612{
1613 wxLayoutConstraints *constr = GetConstraints();
1614 if ( constr )
1615 {
1616 constr->left.SetDone(false);
1617 constr->top.SetDone(false);
1618 constr->right.SetDone(false);
1619 constr->bottom.SetDone(false);
1620 constr->width.SetDone(false);
1621 constr->height.SetDone(false);
1622 constr->centreX.SetDone(false);
1623 constr->centreY.SetDone(false);
1624 }
1625
1626 wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1627 while (node)
1628 {
1629 wxWindow *win = node->GetData();
1630 if ( !win->IsTopLevel() )
1631 win->ResetConstraints();
1632 node = node->GetNext();
1633 }
1634}
1635
1636// Need to distinguish between setting the 'fake' size for windows and sizers,
1637// and setting the real values.
1638void wxWindowBase::SetConstraintSizes(bool recurse)
1639{
1640 wxLayoutConstraints *constr = GetConstraints();
1641 if ( constr && constr->AreSatisfied() )
1642 {
1643 int x = constr->left.GetValue();
1644 int y = constr->top.GetValue();
1645 int w = constr->width.GetValue();
1646 int h = constr->height.GetValue();
1647
1648 if ( (constr->width.GetRelationship() != wxAsIs ) ||
1649 (constr->height.GetRelationship() != wxAsIs) )
1650 {
1651 SetSize(x, y, w, h);
1652 }
1653 else
1654 {
1655 // If we don't want to resize this window, just move it...
1656 Move(x, y);
1657 }
1658 }
1659 else if ( constr )
1660 {
1661 wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
1662 GetClassInfo()->GetClassName(),
1663 GetName().c_str());
1664 }
1665
1666 if ( recurse )
1667 {
1668 wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1669 while (node)
1670 {
1671 wxWindow *win = node->GetData();
1672 if ( !win->IsTopLevel() && win->GetConstraints() )
1673 win->SetConstraintSizes();
1674 node = node->GetNext();
1675 }
1676 }
1677}
1678
1679// Only set the size/position of the constraint (if any)
1680void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
1681{
1682 wxLayoutConstraints *constr = GetConstraints();
1683 if ( constr )
1684 {
1685 if ( x != -1 )
1686 {
1687 constr->left.SetValue(x);
1688 constr->left.SetDone(true);
1689 }
1690 if ( y != -1 )
1691 {
1692 constr->top.SetValue(y);
1693 constr->top.SetDone(true);
1694 }
1695 if ( w != -1 )
1696 {
1697 constr->width.SetValue(w);
1698 constr->width.SetDone(true);
1699 }
1700 if ( h != -1 )
1701 {
1702 constr->height.SetValue(h);
1703 constr->height.SetDone(true);
1704 }
1705 }
1706}
1707
1708void wxWindowBase::MoveConstraint(int x, int y)
1709{
1710 wxLayoutConstraints *constr = GetConstraints();
1711 if ( constr )
1712 {
1713 if ( x != -1 )
1714 {
1715 constr->left.SetValue(x);
1716 constr->left.SetDone(true);
1717 }
1718 if ( y != -1 )
1719 {
1720 constr->top.SetValue(y);
1721 constr->top.SetDone(true);
1722 }
1723 }
1724}
1725
1726void wxWindowBase::GetSizeConstraint(int *w, int *h) const
1727{
1728 wxLayoutConstraints *constr = GetConstraints();
1729 if ( constr )
1730 {
1731 *w = constr->width.GetValue();
1732 *h = constr->height.GetValue();
1733 }
1734 else
1735 GetSize(w, h);
1736}
1737
1738void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
1739{
1740 wxLayoutConstraints *constr = GetConstraints();
1741 if ( constr )
1742 {
1743 *w = constr->width.GetValue();
1744 *h = constr->height.GetValue();
1745 }
1746 else
1747 GetClientSize(w, h);
1748}
1749
1750void wxWindowBase::GetPositionConstraint(int *x, int *y) const
1751{
1752 wxLayoutConstraints *constr = GetConstraints();
1753 if ( constr )
1754 {
1755 *x = constr->left.GetValue();
1756 *y = constr->top.GetValue();
1757 }
1758 else
1759 GetPosition(x, y);
1760}
1761
1762#endif // wxUSE_CONSTRAINTS
1763
1764void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
1765{
1766 // don't do it for the dialogs/frames - they float independently of their
1767 // parent
1768 if ( !IsTopLevel() )
1769 {
1770 wxWindow *parent = GetParent();
1771 if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
1772 {
1773 wxPoint pt(parent->GetClientAreaOrigin());
1774 x += pt.x;
1775 y += pt.y;
1776 }
1777 }
1778}
1779
1780// ----------------------------------------------------------------------------
1781// do Update UI processing for child controls
1782// ----------------------------------------------------------------------------
1783
1784void wxWindowBase::UpdateWindowUI(long flags)
1785{
1786 wxUpdateUIEvent event(GetId());
1787 event.m_eventObject = this;
1788
1789 if ( GetEventHandler()->ProcessEvent(event) )
1790 {
1791 DoUpdateWindowUI(event);
1792 }
1793
1794 if (flags & wxUPDATE_UI_RECURSE)
1795 {
1796 wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1797 while (node)
1798 {
1799 wxWindow* child = (wxWindow*) node->GetData();
1800 child->UpdateWindowUI(flags);
1801 node = node->GetNext();
1802 }
1803 }
1804}
1805
1806// do the window-specific processing after processing the update event
1807// TODO: take specific knowledge out of this function and
1808// put in each control's base class. Unfortunately we don't
1809// yet have base implementation files for wxCheckBox and wxRadioButton.
1810void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
1811{
1812 if ( event.GetSetEnabled() )
1813 Enable(event.GetEnabled());
1814
1815#if wxUSE_CONTROLS
1816 if ( event.GetSetText() )
1817 {
1818 wxControl *control = wxDynamicCastThis(wxControl);
1819 if ( control )
1820 {
1821 if ( event.GetText() != control->GetLabel() )
1822 control->SetLabel(event.GetText());
1823 }
1824#if wxUSE_CHECKBOX
1825 wxCheckBox *checkbox = wxDynamicCastThis(wxCheckBox);
1826 if ( checkbox )
1827 {
1828 if ( event.GetSetChecked() )
1829 checkbox->SetValue(event.GetChecked());
1830 }
1831#endif // wxUSE_CHECKBOX
1832
1833#if wxUSE_RADIOBTN
1834 wxRadioButton *radiobtn = wxDynamicCastThis(wxRadioButton);
1835 if ( radiobtn )
1836 {
1837 if ( event.GetSetChecked() )
1838 radiobtn->SetValue(event.GetChecked());
1839 }
1840#endif // wxUSE_RADIOBTN
1841 }
1842#endif
1843}
1844
1845#if 0
1846// call internal idle recursively
1847// may be obsolete (wait until OnIdle scheme stabilises)
1848void wxWindowBase::ProcessInternalIdle()
1849{
1850 OnInternalIdle();
1851
1852 wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1853 while (node)
1854 {
1855 wxWindow *child = node->GetData();
1856 child->ProcessInternalIdle();
1857 node = node->GetNext();
1858 }
1859}
1860#endif
1861
1862// ----------------------------------------------------------------------------
1863// dialog units translations
1864// ----------------------------------------------------------------------------
1865
1866wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
1867{
1868 int charWidth = GetCharWidth();
1869 int charHeight = GetCharHeight();
1870 wxPoint pt2(-1, -1);
1871 if (pt.x != -1)
1872 pt2.x = (int) ((pt.x * 4) / charWidth) ;
1873 if (pt.y != -1)
1874 pt2.y = (int) ((pt.y * 8) / charHeight) ;
1875
1876 return pt2;
1877}
1878
1879wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
1880{
1881 int charWidth = GetCharWidth();
1882 int charHeight = GetCharHeight();
1883 wxPoint pt2(-1, -1);
1884 if (pt.x != -1)
1885 pt2.x = (int) ((pt.x * charWidth) / 4) ;
1886 if (pt.y != -1)
1887 pt2.y = (int) ((pt.y * charHeight) / 8) ;
1888
1889 return pt2;
1890}
1891
1892// ----------------------------------------------------------------------------
1893// event handlers
1894// ----------------------------------------------------------------------------
1895
1896// propagate the colour change event to the subwindows
1897void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
1898{
1899 wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1900 while ( node )
1901 {
1902 // Only propagate to non-top-level windows
1903 wxWindow *win = node->GetData();
1904 if ( !win->IsTopLevel() )
1905 {
1906 wxSysColourChangedEvent event2;
1907 event.m_eventObject = win;
1908 win->GetEventHandler()->ProcessEvent(event2);
1909 }
1910
1911 node = node->GetNext();
1912 }
1913}
1914
1915// the default action is to populate dialog with data when it's created,
1916// and nudge the UI into displaying itself correctly in case
1917// we've turned the wxUpdateUIEvents frequency down low.
1918void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
1919{
1920 TransferDataToWindow();
1921
1922 // Update the UI at this point
1923 UpdateWindowUI(wxUPDATE_UI_RECURSE);
1924}
1925
1926// process Ctrl-Alt-mclick
1927void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
1928{
1929#if wxUSE_MSGDLG
1930 if ( event.ControlDown() && event.AltDown() )
1931 {
1932 // don't translate these strings
1933 wxString port;
1934
1935#ifdef __WXUNIVERSAL__
1936 port = _T("Univ/");
1937#endif // __WXUNIVERSAL__
1938
1939 switch ( wxGetOsVersion() )
1940 {
1941 case wxMOTIF_X: port += _T("Motif"); break;
1942 case wxMAC:
1943 case wxMAC_DARWIN: port += _T("Mac"); break;
1944 case wxBEOS: port += _T("BeOS"); break;
1945 case wxGTK:
1946 case wxGTK_WIN32:
1947 case wxGTK_OS2:
1948 case wxGTK_BEOS: port += _T("GTK"); break;
1949 case wxWINDOWS:
1950 case wxPENWINDOWS:
1951 case wxWINDOWS_NT:
1952 case wxWIN32S:
1953 case wxWIN95:
1954 case wxWIN386: port += _T("MS Windows"); break;
1955 case wxMGL_UNIX:
1956 case wxMGL_X:
1957 case wxMGL_WIN32:
1958 case wxMGL_OS2: port += _T("MGL"); break;
1959 case wxWINDOWS_OS2:
1960 case wxOS2_PM: port += _T("OS/2"); break;
1961 default: port += _T("unknown"); break;
1962 }
1963
1964 wxMessageBox(wxString::Format(
1965 _T(
1966 " wxWindows Library (%s port)\nVersion %u.%u.%u%s, compiled at %s %s\n Copyright (c) 1995-2002 wxWindows team"
1967 ),
1968 port.c_str(),
1969 wxMAJOR_VERSION,
1970 wxMINOR_VERSION,
1971 wxRELEASE_NUMBER,
1972#if wxUSE_UNICODE
1973 L" (Unicode)",
1974#else
1975 "",
1976#endif
1977 __TDATE__,
1978 __TTIME__
1979 ),
1980 _T("wxWindows information"),
1981 wxICON_INFORMATION | wxOK,
1982 (wxWindow *)this);
1983 }
1984 else
1985#endif // wxUSE_MSGDLG
1986 {
1987 event.Skip();
1988 }
1989}
1990
1991// ----------------------------------------------------------------------------
1992// accessibility
1993// ----------------------------------------------------------------------------
1994
1995#if wxUSE_ACCESSIBILITY
1996void wxWindowBase::SetAccessible(wxAccessible* accessible)
1997{
1998 if (m_accessible && (accessible != m_accessible))
1999 delete m_accessible;
2000 m_accessible = accessible;
2001 if (m_accessible)
2002 m_accessible->SetWindow((wxWindow*) this);
2003}
2004
2005// Returns the accessible object, creating if necessary.
2006wxAccessible* wxWindowBase::GetOrCreateAccessible()
2007{
2008 if (!m_accessible)
2009 m_accessible = CreateAccessible();
2010 return m_accessible;
2011}
2012
2013// Override to create a specific accessible object.
2014wxAccessible* wxWindowBase::CreateAccessible()
2015{
2016 return new wxWindowAccessible((wxWindow*) this);
2017}
2018
2019#endif
2020
2021#if !wxUSE_STL
2022// ----------------------------------------------------------------------------
2023// list classes implementation
2024// ----------------------------------------------------------------------------
2025
2026void wxWindowListNode::DeleteData()
2027{
2028 delete (wxWindow *)GetData();
2029}
2030#endif
2031
2032// ----------------------------------------------------------------------------
2033// borders
2034// ----------------------------------------------------------------------------
2035
2036wxBorder wxWindowBase::GetBorder(long flags) const
2037{
2038 wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2039 if ( border == wxBORDER_DEFAULT )
2040 {
2041 border = GetDefaultBorder();
2042 }
2043
2044 return border;
2045}
2046
2047wxBorder wxWindowBase::GetDefaultBorder() const
2048{
2049 return wxBORDER_NONE;
2050}
2051
2052// ----------------------------------------------------------------------------
2053// hit testing
2054// ----------------------------------------------------------------------------
2055
2056wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2057{
2058 // here we just check if the point is inside the window or not
2059
2060 // check the top and left border first
2061 bool outside = x < 0 || y < 0;
2062 if ( !outside )
2063 {
2064 // check the right and bottom borders too
2065 wxSize size = GetSize();
2066 outside = x >= size.x || y >= size.y;
2067 }
2068
2069 return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2070}
2071
2072// ----------------------------------------------------------------------------
2073// mouse capture
2074// ----------------------------------------------------------------------------
2075
2076struct WXDLLEXPORT wxWindowNext
2077{
2078 wxWindow *win;
2079 wxWindowNext *next;
2080} *wxWindowBase::ms_winCaptureNext = NULL;
2081
2082void wxWindowBase::CaptureMouse()
2083{
2084 wxLogTrace(_T("mousecapture"), _T("CaptureMouse(%p)"), this);
2085
2086 wxWindow *winOld = GetCapture();
2087 if ( winOld )
2088 {
2089 ((wxWindowBase*) winOld)->DoReleaseMouse();
2090
2091 // save it on stack
2092 wxWindowNext *item = new wxWindowNext;
2093 item->win = winOld;
2094 item->next = ms_winCaptureNext;
2095 ms_winCaptureNext = item;
2096 }
2097 //else: no mouse capture to save
2098
2099 DoCaptureMouse();
2100}
2101
2102void wxWindowBase::ReleaseMouse()
2103{
2104 wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(%p)"), this);
2105
2106 wxASSERT_MSG( GetCapture() == this, wxT("attempt to release mouse, but this window hasn't captured it") );
2107
2108 DoReleaseMouse();
2109
2110 if ( ms_winCaptureNext )
2111 {
2112 ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2113
2114 wxWindowNext *item = ms_winCaptureNext;
2115 ms_winCaptureNext = item->next;
2116 delete item;
2117 }
2118 //else: stack is empty, no previous capture
2119
2120 wxLogTrace(_T("mousecapture"),
2121 (const wxChar *) _T("After ReleaseMouse() mouse is captured by %p"),
2122 GetCapture());
2123}
2124
2125#if wxUSE_HOTKEY
2126
2127bool
2128wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2129 int WXUNUSED(modifiers),
2130 int WXUNUSED(keycode))
2131{
2132 // not implemented
2133 return false;
2134}
2135
2136bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2137{
2138 // not implemented
2139 return false;
2140}
2141
2142#endif // wxUSE_HOTKEY
2143
2144void wxWindowBase::SendDestroyEvent()
2145{
2146 wxWindowDestroyEvent event;
2147 event.SetEventObject(this);
2148 event.SetId(GetId());
2149 GetEventHandler()->ProcessEvent(event);
2150}
2151
2152// ----------------------------------------------------------------------------
2153// event processing
2154// ----------------------------------------------------------------------------
2155
2156bool wxWindowBase::TryValidator(wxEvent& wxVALIDATOR_PARAM(event))
2157{
2158#if wxUSE_VALIDATORS
2159 // Can only use the validator of the window which
2160 // is receiving the event
2161 if ( event.GetEventObject() == this )
2162 {
2163 wxValidator *validator = GetValidator();
2164 if ( validator && validator->ProcessEvent(event) )
2165 {
2166 return true;
2167 }
2168 }
2169#endif // wxUSE_VALIDATORS
2170
2171 return false;
2172}
2173
2174bool wxWindowBase::TryParent(wxEvent& event)
2175{
2176 // carry on up the parent-child hierarchy if the propgation count hasn't
2177 // reached zero yet
2178 if ( event.ShouldPropagate() )
2179 {
2180 // honour the requests to stop propagation at this window: this is
2181 // used by the dialogs, for example, to prevent processing the events
2182 // from the dialog controls in the parent frame which rarely, if ever,
2183 // makes sense
2184 if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
2185 {
2186 wxWindow *parent = GetParent();
2187 if ( parent && !parent->IsBeingDeleted() )
2188 {
2189 wxPropagateOnce propagateOnce(event);
2190
2191 return parent->GetEventHandler()->ProcessEvent(event);
2192 }
2193 }
2194 }
2195
2196 return wxEvtHandler::TryParent(event);
2197}
2198
2199// ----------------------------------------------------------------------------
2200// global functions
2201// ----------------------------------------------------------------------------
2202
2203wxWindow* wxGetTopLevelParent(wxWindow *win)
2204{
2205 while ( win && !win->IsTopLevel() )
2206 win = win->GetParent();
2207
2208 return win;
2209}
2210
2211#if wxUSE_ACCESSIBILITY
2212// ----------------------------------------------------------------------------
2213// accessible object for windows
2214// ----------------------------------------------------------------------------
2215
2216// Can return either a child object, or an integer
2217// representing the child element, starting from 1.
2218wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
2219{
2220 wxASSERT( GetWindow() != NULL );
2221 if (!GetWindow())
2222 return wxACC_FAIL;
2223
2224 return wxACC_NOT_IMPLEMENTED;
2225}
2226
2227// Returns the rectangle for this object (id = 0) or a child element (id > 0).
2228wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
2229{
2230 wxASSERT( GetWindow() != NULL );
2231 if (!GetWindow())
2232 return wxACC_FAIL;
2233
2234 wxWindow* win = NULL;
2235 if (elementId == 0)
2236 {
2237 win = GetWindow();
2238 }
2239 else
2240 {
2241 if (elementId <= (int) GetWindow()->GetChildren().GetCount())
2242 {
2243 win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
2244 }
2245 else
2246 return wxACC_FAIL;
2247 }
2248 if (win)
2249 {
2250 rect = win->GetRect();
2251 if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
2252 rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
2253 return wxACC_OK;
2254 }
2255
2256 return wxACC_NOT_IMPLEMENTED;
2257}
2258
2259// Navigates from fromId to toId/toObject.
2260wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
2261 int* WXUNUSED(toId), wxAccessible** toObject)
2262{
2263 wxASSERT( GetWindow() != NULL );
2264 if (!GetWindow())
2265 return wxACC_FAIL;
2266
2267 switch (navDir)
2268 {
2269 case wxNAVDIR_FIRSTCHILD:
2270 {
2271 if (GetWindow()->GetChildren().GetCount() == 0)
2272 return wxACC_FALSE;
2273 wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
2274 *toObject = childWindow->GetOrCreateAccessible();
2275
2276 return wxACC_OK;
2277 }
2278 case wxNAVDIR_LASTCHILD:
2279 {
2280 if (GetWindow()->GetChildren().GetCount() == 0)
2281 return wxACC_FALSE;
2282 wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
2283 *toObject = childWindow->GetOrCreateAccessible();
2284
2285 return wxACC_OK;
2286 }
2287 case wxNAVDIR_RIGHT:
2288 case wxNAVDIR_DOWN:
2289 case wxNAVDIR_NEXT:
2290 {
2291 wxWindowList::compatibility_iterator node =
2292 wxWindowList::compatibility_iterator();
2293 if (fromId == 0)
2294 {
2295 // Can't navigate to sibling of this window
2296 // if we're a top-level window.
2297 if (!GetWindow()->GetParent())
2298 return wxACC_NOT_IMPLEMENTED;
2299
2300 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2301 }
2302 else
2303 {
2304 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2305 node = GetWindow()->GetChildren().Item(fromId-1);
2306 }
2307
2308 if (node && node->GetNext())
2309 {
2310 wxWindow* nextWindow = node->GetNext()->GetData();
2311 *toObject = nextWindow->GetOrCreateAccessible();
2312 return wxACC_OK;
2313 }
2314 else
2315 return wxACC_FALSE;
2316 }
2317 case wxNAVDIR_LEFT:
2318 case wxNAVDIR_UP:
2319 case wxNAVDIR_PREVIOUS:
2320 {
2321 wxWindowList::compatibility_iterator node =
2322 wxWindowList::compatibility_iterator();
2323 if (fromId == 0)
2324 {
2325 // Can't navigate to sibling of this window
2326 // if we're a top-level window.
2327 if (!GetWindow()->GetParent())
2328 return wxACC_NOT_IMPLEMENTED;
2329
2330 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2331 }
2332 else
2333 {
2334 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2335 node = GetWindow()->GetChildren().Item(fromId-1);
2336 }
2337
2338 if (node && node->GetPrevious())
2339 {
2340 wxWindow* previousWindow = node->GetPrevious()->GetData();
2341 *toObject = previousWindow->GetOrCreateAccessible();
2342 return wxACC_OK;
2343 }
2344 else
2345 return wxACC_FALSE;
2346 }
2347 }
2348
2349 return wxACC_NOT_IMPLEMENTED;
2350}
2351
2352// Gets the name of the specified object.
2353wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
2354{
2355 wxASSERT( GetWindow() != NULL );
2356 if (!GetWindow())
2357 return wxACC_FAIL;
2358
2359 wxString title;
2360
2361 // If a child, leave wxWindows to call the function on the actual
2362 // child object.
2363 if (childId > 0)
2364 return wxACC_NOT_IMPLEMENTED;
2365
2366 // This will eventually be replaced by specialised
2367 // accessible classes, one for each kind of wxWindows
2368 // control or window.
2369 if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
2370 title = ((wxButton*) GetWindow())->GetLabel();
2371 else
2372 title = GetWindow()->GetName();
2373
2374 if (!title.IsEmpty())
2375 {
2376 *name = title;
2377 return wxACC_OK;
2378 }
2379 else
2380 return wxACC_NOT_IMPLEMENTED;
2381}
2382
2383// Gets the number of children.
2384wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
2385{
2386 wxASSERT( GetWindow() != NULL );
2387 if (!GetWindow())
2388 return wxACC_FAIL;
2389
2390 *childId = (int) GetWindow()->GetChildren().GetCount();
2391 return wxACC_OK;
2392}
2393
2394// Gets the specified child (starting from 1).
2395// If *child is NULL and return value is wxACC_OK,
2396// this means that the child is a simple element and
2397// not an accessible object.
2398wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
2399{
2400 wxASSERT( GetWindow() != NULL );
2401 if (!GetWindow())
2402 return wxACC_FAIL;
2403
2404 if (childId == 0)
2405 {
2406 *child = this;
2407 return wxACC_OK;
2408 }
2409
2410 if (childId > (int) GetWindow()->GetChildren().GetCount())
2411 return wxACC_FAIL;
2412
2413 wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
2414 *child = childWindow->GetOrCreateAccessible();
2415 if (*child)
2416 return wxACC_OK;
2417 else
2418 return wxACC_FAIL;
2419}
2420
2421// Gets the parent, or NULL.
2422wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
2423{
2424 wxASSERT( GetWindow() != NULL );
2425 if (!GetWindow())
2426 return wxACC_FAIL;
2427
2428 wxWindow* parentWindow = GetWindow()->GetParent();
2429 if (!parentWindow)
2430 {
2431 *parent = NULL;
2432 return wxACC_OK;
2433 }
2434 else
2435 {
2436 *parent = parentWindow->GetOrCreateAccessible();
2437 if (*parent)
2438 return wxACC_OK;
2439 else
2440 return wxACC_FAIL;
2441 }
2442}
2443
2444// Performs the default action. childId is 0 (the action for this object)
2445// or > 0 (the action for a child).
2446// Return wxACC_NOT_SUPPORTED if there is no default action for this
2447// window (e.g. an edit control).
2448wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
2449{
2450 wxASSERT( GetWindow() != NULL );
2451 if (!GetWindow())
2452 return wxACC_FAIL;
2453
2454 return wxACC_NOT_IMPLEMENTED;
2455}
2456
2457// Gets the default action for this object (0) or > 0 (the action for a child).
2458// Return wxACC_OK even if there is no action. actionName is the action, or the empty
2459// string if there is no action.
2460// The retrieved string describes the action that is performed on an object,
2461// not what the object does as a result. For example, a toolbar button that prints
2462// a document has a default action of "Press" rather than "Prints the current document."
2463wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
2464{
2465 wxASSERT( GetWindow() != NULL );
2466 if (!GetWindow())
2467 return wxACC_FAIL;
2468
2469 return wxACC_NOT_IMPLEMENTED;
2470}
2471
2472// Returns the description for this object or a child.
2473wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
2474{
2475 wxASSERT( GetWindow() != NULL );
2476 if (!GetWindow())
2477 return wxACC_FAIL;
2478
2479 wxString ht(GetWindow()->GetHelpText());
2480 if (!ht.IsEmpty())
2481 {
2482 *description = ht;
2483 return wxACC_OK;
2484 }
2485 return wxACC_NOT_IMPLEMENTED;
2486}
2487
2488// Returns help text for this object or a child, similar to tooltip text.
2489wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
2490{
2491 wxASSERT( GetWindow() != NULL );
2492 if (!GetWindow())
2493 return wxACC_FAIL;
2494
2495 wxString ht(GetWindow()->GetHelpText());
2496 if (!ht.IsEmpty())
2497 {
2498 *helpText = ht;
2499 return wxACC_OK;
2500 }
2501 return wxACC_NOT_IMPLEMENTED;
2502}
2503
2504// Returns the keyboard shortcut for this object or child.
2505// Return e.g. ALT+K
2506wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
2507{
2508 wxASSERT( GetWindow() != NULL );
2509 if (!GetWindow())
2510 return wxACC_FAIL;
2511
2512 return wxACC_NOT_IMPLEMENTED;
2513}
2514
2515// Returns a role constant.
2516wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
2517{
2518 wxASSERT( GetWindow() != NULL );
2519 if (!GetWindow())
2520 return wxACC_FAIL;
2521
2522 // If a child, leave wxWindows to call the function on the actual
2523 // child object.
2524 if (childId > 0)
2525 return wxACC_NOT_IMPLEMENTED;
2526
2527 if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2528 return wxACC_NOT_IMPLEMENTED;
2529#if wxUSE_STATUSBAR
2530 if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2531 return wxACC_NOT_IMPLEMENTED;
2532#endif
2533#if wxUSE_TOOLBAR
2534 if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2535 return wxACC_NOT_IMPLEMENTED;
2536#endif
2537
2538 //*role = wxROLE_SYSTEM_CLIENT;
2539 *role = wxROLE_SYSTEM_CLIENT;
2540 return wxACC_OK;
2541
2542 #if 0
2543 return wxACC_NOT_IMPLEMENTED;
2544 #endif
2545}
2546
2547// Returns a state constant.
2548wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
2549{
2550 wxASSERT( GetWindow() != NULL );
2551 if (!GetWindow())
2552 return wxACC_FAIL;
2553
2554 // If a child, leave wxWindows to call the function on the actual
2555 // child object.
2556 if (childId > 0)
2557 return wxACC_NOT_IMPLEMENTED;
2558
2559 if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2560 return wxACC_NOT_IMPLEMENTED;
2561
2562#if wxUSE_STATUSBAR
2563 if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2564 return wxACC_NOT_IMPLEMENTED;
2565#endif
2566#if wxUSE_TOOLBAR
2567 if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2568 return wxACC_NOT_IMPLEMENTED;
2569#endif
2570
2571 *state = 0;
2572 return wxACC_OK;
2573
2574 #if 0
2575 return wxACC_NOT_IMPLEMENTED;
2576 #endif
2577}
2578
2579// Returns a localized string representing the value for the object
2580// or child.
2581wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
2582{
2583 wxASSERT( GetWindow() != NULL );
2584 if (!GetWindow())
2585 return wxACC_FAIL;
2586
2587 return wxACC_NOT_IMPLEMENTED;
2588}
2589
2590// Selects the object or child.
2591wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
2592{
2593 wxASSERT( GetWindow() != NULL );
2594 if (!GetWindow())
2595 return wxACC_FAIL;
2596
2597 return wxACC_NOT_IMPLEMENTED;
2598}
2599
2600// Gets the window with the keyboard focus.
2601// If childId is 0 and child is NULL, no object in
2602// this subhierarchy has the focus.
2603// If this object has the focus, child should be 'this'.
2604wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
2605{
2606 wxASSERT( GetWindow() != NULL );
2607 if (!GetWindow())
2608 return wxACC_FAIL;
2609
2610 return wxACC_NOT_IMPLEMENTED;
2611}
2612
2613// Gets a variant representing the selected children
2614// of this object.
2615// Acceptable values:
2616// - a null variant (IsNull() returns TRUE)
2617// - a list variant (GetType() == wxT("list")
2618// - an integer representing the selected child element,
2619// or 0 if this object is selected (GetType() == wxT("long")
2620// - a "void*" pointer to a wxAccessible child object
2621wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
2622{
2623 wxASSERT( GetWindow() != NULL );
2624 if (!GetWindow())
2625 return wxACC_FAIL;
2626
2627 return wxACC_NOT_IMPLEMENTED;
2628}
2629
2630#endif // wxUSE_ACCESSIBILITY
wxWidgets (Impactor)