src/common/wincmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/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) wxWidgets team
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/string.h"
  29     #include "wx/log.h"
  30     #include "wx/intl.h"
  31     #include "wx/frame.h"
  32     #include "wx/window.h"
  33     #include "wx/control.h"
  34     #include "wx/checkbox.h"
  35     #include "wx/radiobut.h"
  36     #include "wx/statbox.h"
  37     #include "wx/textctrl.h"
  38     #include "wx/settings.h"
  39     #include "wx/dialog.h"
  40     #include "wx/msgdlg.h"
  41     #include "wx/statusbr.h"
  42     #include "wx/toolbar.h"
  43     #include "wx/dcclient.h"
  44     #include "wx/scrolbar.h"
  45     #include "wx/layout.h"
  46     #include "wx/sizer.h"
  47 #endif //WX_PRECOMP
  48
  49 #if wxUSE_DRAG_AND_DROP
  50     #include "wx/dnd.h"
  51 #endif // wxUSE_DRAG_AND_DROP
  52
  53 #if wxUSE_ACCESSIBILITY
  54     #include "wx/access.h"
  55 #endif
  56
  57 #if wxUSE_HELP
  58     #include "wx/cshelp.h"
  59 #endif // wxUSE_HELP
  60
  61 #if wxUSE_TOOLTIPS
  62     #include "wx/tooltip.h"
  63 #endif // wxUSE_TOOLTIPS
  64
  65 #if wxUSE_CARET
  66     #include "wx/caret.h"
  67 #endif // wxUSE_CARET
  68
  69 #if wxUSE_SYSTEM_OPTIONS
  70     #include "wx/sysopt.h"
  71 #endif
  72
  73 // For reporting compile- and runtime version of GTK+ in the ctrl+alt+mclick dialog.
  74 // The gtk includes don't pull any other headers in, at least not on my system - MR
  75 #ifdef __WXGTK__
  76     #ifdef __WXGTK20__
  77         #include <gtk/gtkversion.h>
  78     #else
  79         #include <gtk/gtkfeatures.h>
  80     #endif
  81     extern const unsigned int gtk_major_version;
  82     extern const unsigned int gtk_minor_version;
  83     extern const unsigned int gtk_micro_version;
  84 #endif
  85
  86 #include "wx/platinfo.h"
  87
  88 // Windows List
  89 WXDLLIMPEXP_DATA_CORE(wxWindowList) wxTopLevelWindows;
  90
  91 // ----------------------------------------------------------------------------
  92 // static data
  93 // ----------------------------------------------------------------------------
  94
  95 #if defined(__WXPALMOS__)
  96 int wxWindowBase::ms_lastControlId = 32767;
  97 #elif defined(__WXPM__)
  98 int wxWindowBase::ms_lastControlId = 2000;
  99 #else
 100 int wxWindowBase::ms_lastControlId = -200;
 101 #endif
 102
 103 IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
 104
 105 // ----------------------------------------------------------------------------
 106 // event table
 107 // ----------------------------------------------------------------------------
 108
 109 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
 110     EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
 111     EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
 112     EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
 113
 114 #if wxUSE_HELP
 115     EVT_HELP(wxID_ANY, wxWindowBase::OnHelp)
 116 #endif // wxUSE_HELP
 117
 118 END_EVENT_TABLE()
 119
 120 // ============================================================================
 121 // implementation of the common functionality of the wxWindow class
 122 // ============================================================================
 123
 124 // ----------------------------------------------------------------------------
 125 // initialization
 126 // ----------------------------------------------------------------------------
 127
 128 // the default initialization
 129 wxWindowBase::wxWindowBase()
 130 {
 131     // no window yet, no parent nor children
 132     m_parent = (wxWindow *)NULL;
 133     m_windowId = wxID_ANY;
 134
 135     // no constraints on the minimal window size
 136     m_minWidth =
 137     m_maxWidth = wxDefaultCoord;
 138     m_minHeight =
 139     m_maxHeight = wxDefaultCoord;
 140
 141     // invalidiated cache value
 142     m_bestSizeCache = wxDefaultSize;
 143
 144     // window are created enabled and visible by default
 145     m_isShown =
 146     m_isEnabled = true;
 147
 148     // the default event handler is just this window
 149     m_eventHandler = this;
 150
 151 #if wxUSE_VALIDATORS
 152     // no validator
 153     m_windowValidator = (wxValidator *) NULL;
 154 #endif // wxUSE_VALIDATORS
 155
 156     // the colours/fonts are default for now, so leave m_font,
 157     // m_backgroundColour and m_foregroundColour uninitialized and set those
 158     m_hasBgCol =
 159     m_hasFgCol =
 160     m_hasFont = false;
 161     m_inheritBgCol =
 162     m_inheritFgCol =
 163     m_inheritFont = false;
 164
 165     // no style bits
 166     m_exStyle =
 167     m_windowStyle = 0;
 168
 169     m_backgroundStyle = wxBG_STYLE_SYSTEM;
 170
 171 #if wxUSE_CONSTRAINTS
 172     // no constraints whatsoever
 173     m_constraints = (wxLayoutConstraints *) NULL;
 174     m_constraintsInvolvedIn = (wxWindowList *) NULL;
 175 #endif // wxUSE_CONSTRAINTS
 176
 177     m_windowSizer = (wxSizer *) NULL;
 178     m_containingSizer = (wxSizer *) NULL;
 179     m_autoLayout = false;
 180
 181 #if wxUSE_DRAG_AND_DROP
 182     m_dropTarget = (wxDropTarget *)NULL;
 183 #endif // wxUSE_DRAG_AND_DROP
 184
 185 #if wxUSE_TOOLTIPS
 186     m_tooltip = (wxToolTip *)NULL;
 187 #endif // wxUSE_TOOLTIPS
 188
 189 #if wxUSE_CARET
 190     m_caret = (wxCaret *)NULL;
 191 #endif // wxUSE_CARET
 192
 193 #if wxUSE_PALETTE
 194     m_hasCustomPalette = false;
 195 #endif // wxUSE_PALETTE
 196
 197 #if wxUSE_ACCESSIBILITY
 198     m_accessible = NULL;
 199 #endif
 200
 201     m_virtualSize = wxDefaultSize;
 202
 203     m_scrollHelper = (wxScrollHelper *) NULL;
 204
 205     m_minVirtualWidth =
 206     m_maxVirtualWidth = wxDefaultCoord;
 207     m_minVirtualHeight =
 208     m_maxVirtualHeight = wxDefaultCoord;
 209
 210     m_windowVariant = wxWINDOW_VARIANT_NORMAL;
 211 #if wxUSE_SYSTEM_OPTIONS
 212     if ( wxSystemOptions::HasOption(wxWINDOW_DEFAULT_VARIANT) )
 213     {
 214        m_windowVariant = (wxWindowVariant) wxSystemOptions::GetOptionInt( wxWINDOW_DEFAULT_VARIANT ) ;
 215     }
 216 #endif
 217
 218     // Whether we're using the current theme for this window (wxGTK only for now)
 219     m_themeEnabled = false;
 220
 221     // VZ: this one shouldn't exist...
 222     m_isBeingDeleted = false;
 223 }
 224
 225 // common part of window creation process
 226 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 227                               wxWindowID id,
 228                               const wxPoint& WXUNUSED(pos),
 229                               const wxSize& WXUNUSED(size),
 230                               long style,
 231                               const wxValidator& wxVALIDATOR_PARAM(validator),
 232                               const wxString& name)
 233 {
 234 #if wxUSE_STATBOX
 235     // wxGTK doesn't allow to create controls with static box as the parent so
 236     // this will result in a crash when the program is ported to wxGTK so warn
 237     // the user about it
 238
 239     // if you get this assert, the correct solution is to create the controls
 240     // as siblings of the static box
 241     wxASSERT_MSG( !parent || !wxDynamicCast(parent, wxStaticBox),
 242                   _T("wxStaticBox can't be used as a window parent!") );
 243 #endif // wxUSE_STATBOX
 244
 245     // ids are limited to 16 bits under MSW so if you care about portability,
 246     // it's not a good idea to use ids out of this range (and negative ids are
 247     // reserved for wxWidgets own usage)
 248     wxASSERT_MSG( id == wxID_ANY || (id >= 0 && id < 32767),
 249                   _T("invalid id value") );
 250
 251     // generate a new id if the user doesn't care about it
 252     m_windowId = id == wxID_ANY ? NewControlId() : id;
 253
 254     SetName(name);
 255     SetWindowStyleFlag(style);
 256     SetParent(parent);
 257
 258 #if wxUSE_VALIDATORS
 259     SetValidator(validator);
 260 #endif // wxUSE_VALIDATORS
 261
 262     // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
 263     // have it too - like this it's possible to set it only in the top level
 264     // dialog/frame and all children will inherit it by defult
 265     if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
 266     {
 267         SetExtraStyle(GetExtraStyle() | wxWS_EX_VALIDATE_RECURSIVELY);
 268     }
 269
 270     return true;
 271 }
 272
 273 // ----------------------------------------------------------------------------
 274 // destruction
 275 // ----------------------------------------------------------------------------
 276
 277 // common clean up
 278 wxWindowBase::~wxWindowBase()
 279 {
 280     wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
 281
 282     // FIXME if these 2 cases result from programming errors in the user code
 283     //       we should probably assert here instead of silently fixing them
 284
 285     // Just in case the window has been Closed, but we're then deleting
 286     // immediately: don't leave dangling pointers.
 287     wxPendingDelete.DeleteObject(this);
 288
 289     // Just in case we've loaded a top-level window via LoadNativeDialog but
 290     // we weren't a dialog class
 291     wxTopLevelWindows.DeleteObject((wxWindow*)this);
 292
 293     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 294
 295     // reset the dangling pointer our parent window may keep to us
 296     if ( m_parent )
 297     {
 298         m_parent->RemoveChild(this);
 299     }
 300
 301 #if wxUSE_CARET
 302     delete m_caret;
 303 #endif // wxUSE_CARET
 304
 305 #if wxUSE_VALIDATORS
 306     delete m_windowValidator;
 307 #endif // wxUSE_VALIDATORS
 308
 309 #if wxUSE_CONSTRAINTS
 310     // Have to delete constraints/sizer FIRST otherwise sizers may try to look
 311     // at deleted windows as they delete themselves.
 312     DeleteRelatedConstraints();
 313
 314     if ( m_constraints )
 315     {
 316         // This removes any dangling pointers to this window in other windows'
 317         // constraintsInvolvedIn lists.
 318         UnsetConstraints(m_constraints);
 319         delete m_constraints;
 320         m_constraints = NULL;
 321     }
 322 #endif // wxUSE_CONSTRAINTS
 323
 324     if ( m_containingSizer )
 325         m_containingSizer->Detach( (wxWindow*)this );
 326
 327     delete m_windowSizer;
 328
 329 #if wxUSE_DRAG_AND_DROP
 330     delete m_dropTarget;
 331 #endif // wxUSE_DRAG_AND_DROP
 332
 333 #if wxUSE_TOOLTIPS
 334     delete m_tooltip;
 335 #endif // wxUSE_TOOLTIPS
 336
 337 #if wxUSE_ACCESSIBILITY
 338     delete m_accessible;
 339 #endif
 340 }
 341
 342 bool wxWindowBase::Destroy()
 343 {
 344     delete this;
 345
 346     return true;
 347 }
 348
 349 bool wxWindowBase::Close(bool force)
 350 {
 351     wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
 352     event.SetEventObject(this);
 353     event.SetCanVeto(!force);
 354
 355     // return false if window wasn't closed because the application vetoed the
 356     // close event
 357     return GetEventHandler()->ProcessEvent(event) && !event.GetVeto();
 358 }
 359
 360 bool wxWindowBase::DestroyChildren()
 361 {
 362     wxWindowList::compatibility_iterator node;
 363     for ( ;; )
 364     {
 365         // we iterate until the list becomes empty
 366         node = GetChildren().GetFirst();
 367         if ( !node )
 368             break;
 369
 370         wxWindow *child = node->GetData();
 371
 372         // note that we really want to call delete and not ->Destroy() here
 373         // because we want to delete the child immediately, before we are
 374         // deleted, and delayed deletion would result in problems as our (top
 375         // level) child could outlive its parent
 376         delete child;
 377
 378         wxASSERT_MSG( !GetChildren().Find(child),
 379                       wxT("child didn't remove itself using RemoveChild()") );
 380     }
 381
 382     return true;
 383 }
 384
 385 // ----------------------------------------------------------------------------
 386 // size/position related methods
 387 // ----------------------------------------------------------------------------
 388
 389 // centre the window with respect to its parent in either (or both) directions
 390 void wxWindowBase::DoCentre(int dir)
 391 {
 392     wxCHECK_RET( !(dir & wxCENTRE_ON_SCREEN) && GetParent(),
 393                  _T("this method only implements centering child windows") );
 394
 395     SetSize(GetRect().CentreIn(GetParent()->GetClientSize(), dir));
 396 }
 397
 398 // fits the window around the children
 399 void wxWindowBase::Fit()
 400 {
 401     if ( !GetChildren().empty() )
 402     {
 403         SetSize(GetBestSize());
 404     }
 405     //else: do nothing if we have no children
 406 }
 407
 408 // fits virtual size (ie. scrolled area etc.) around children
 409 void wxWindowBase::FitInside()
 410 {
 411     if ( GetChildren().GetCount() > 0 )
 412     {
 413         SetVirtualSize( GetBestVirtualSize() );
 414     }
 415 }
 416
 417 // On Mac, scrollbars are explicitly children.
 418 #ifdef __WXMAC__
 419 static bool wxHasRealChildren(const wxWindowBase* win)
 420 {
 421     int realChildCount = 0;
 422
 423     for ( wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
 424           node;
 425           node = node->GetNext() )
 426     {
 427         wxWindow *win = node->GetData();
 428         if ( !win->IsTopLevel() && win->IsShown() && !win->IsKindOf(CLASSINFO(wxScrollBar)))
 429             realChildCount ++;
 430     }
 431     return (realChildCount > 0);
 432 }
 433 #endif
 434
 435 void wxWindowBase::InvalidateBestSize()
 436 {
 437     m_bestSizeCache = wxDefaultSize;
 438
 439     // parent's best size calculation may depend on its children's
 440     // as long as child window we are in is not top level window itself
 441     // (because the TLW size is never resized automatically)
 442     // so let's invalidate it as well to be safe:
 443     if (m_parent && !IsTopLevel())
 444         m_parent->InvalidateBestSize();
 445 }
 446
 447 // return the size best suited for the current window
 448 wxSize wxWindowBase::DoGetBestSize() const
 449 {
 450     wxSize best;
 451
 452     if ( m_windowSizer )
 453     {
 454         best = GetWindowSizeForVirtualSize(m_windowSizer->GetMinSize());
 455     }
 456 #if wxUSE_CONSTRAINTS
 457     else if ( m_constraints )
 458     {
 459         wxConstCast(this, wxWindowBase)->SatisfyConstraints();
 460
 461         // our minimal acceptable size is such that all our windows fit inside
 462         int maxX = 0,
 463             maxY = 0;
 464
 465         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 466               node;
 467               node = node->GetNext() )
 468         {
 469             wxLayoutConstraints *c = node->GetData()->GetConstraints();
 470             if ( !c )
 471             {
 472                 // it's not normal that we have an unconstrained child, but
 473                 // what can we do about it?
 474                 continue;
 475             }
 476
 477             int x = c->right.GetValue(),
 478                 y = c->bottom.GetValue();
 479
 480             if ( x > maxX )
 481                 maxX = x;
 482
 483             if ( y > maxY )
 484                 maxY = y;
 485
 486             // TODO: we must calculate the overlaps somehow, otherwise we
 487             //       will never return a size bigger than the current one :-(
 488         }
 489
 490         best = wxSize(maxX, maxY);
 491     }
 492 #endif // wxUSE_CONSTRAINTS
 493     else if ( !GetChildren().empty()
 494 #ifdef __WXMAC__
 495               && wxHasRealChildren(this)
 496 #endif
 497               )
 498     {
 499         // our minimal acceptable size is such that all our visible child
 500         // windows fit inside
 501         int maxX = 0,
 502             maxY = 0;
 503
 504         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 505               node;
 506               node = node->GetNext() )
 507         {
 508             wxWindow *win = node->GetData();
 509             if ( win->IsTopLevel()
 510                     || !win->IsShown()
 511 #if wxUSE_STATUSBAR
 512                         || wxDynamicCast(win, wxStatusBar)
 513 #endif // wxUSE_STATUSBAR
 514                )
 515             {
 516                 // dialogs and frames lie in different top level windows -
 517                 // don't deal with them here; as for the status bars, they
 518                 // don't lie in the client area at all
 519                 continue;
 520             }
 521
 522             int wx, wy, ww, wh;
 523             win->GetPosition(&wx, &wy);
 524
 525             // if the window hadn't been positioned yet, assume that it is in
 526             // the origin
 527             if ( wx == wxDefaultCoord )
 528                 wx = 0;
 529             if ( wy == wxDefaultCoord )
 530                 wy = 0;
 531
 532             win->GetSize(&ww, &wh);
 533             if ( wx + ww > maxX )
 534                 maxX = wx + ww;
 535             if ( wy + wh > maxY )
 536                 maxY = wy + wh;
 537         }
 538
 539         best = wxSize(maxX, maxY);
 540     }
 541     else // ! has children
 542     {
 543         // for a generic window there is no natural best size so, if the
 544         // minimal size is not set, use the current size but take care to
 545         // remember it as minimal size for the next time because our best size
 546         // should be constant: otherwise we could get into a situation when the
 547         // window is initially at some size, then expanded to a larger size and
 548         // then, when the containing window is shrunk back (because our initial
 549         // best size had been used for computing the parent min size), we can't
 550         // be shrunk back any more because our best size is now bigger
 551         wxSize size = GetMinSize();
 552         if ( !size.IsFullySpecified() )
 553         {
 554             size.SetDefaults(GetSize());
 555             wxConstCast(this, wxWindowBase)->SetMinSize(size);
 556         }
 557
 558         // return as-is, unadjusted by the client size difference.
 559         return size;
 560     }
 561
 562     // Add any difference between size and client size
 563     wxSize diff = GetSize() - GetClientSize();
 564     best.x += wxMax(0, diff.x);
 565     best.y += wxMax(0, diff.y);
 566
 567     return best;
 568 }
 569
 570
 571 wxSize wxWindowBase::GetBestFittingSize() const
 572 {
 573     // merge the best size with the min size, giving priority to the min size
 574     wxSize min = GetMinSize();
 575     if (min.x == wxDefaultCoord || min.y == wxDefaultCoord)
 576     {
 577         wxSize best = GetBestSize();
 578         if (min.x == wxDefaultCoord) min.x =  best.x;
 579         if (min.y == wxDefaultCoord) min.y =  best.y;
 580     }
 581     return min;
 582 }
 583
 584
 585 void wxWindowBase::SetBestFittingSize(const wxSize& size)
 586 {
 587     // Set the min size to the size passed in.  This will usually either be
 588     // wxDefaultSize or the size passed to this window's ctor/Create function.
 589     SetMinSize(size);
 590
 591     // Merge the size with the best size if needed
 592     wxSize best = GetBestFittingSize();
 593
 594     // If the current size doesn't match then change it
 595     if (GetSize() != best)
 596         SetSize(best);
 597 }
 598
 599
 600 // by default the origin is not shifted
 601 wxPoint wxWindowBase::GetClientAreaOrigin() const
 602 {
 603     return wxPoint(0,0);
 604 }
 605
 606 // set the min/max size of the window
 607 void wxWindowBase::DoSetSizeHints(int minW, int minH,
 608                                   int maxW, int maxH,
 609                                   int WXUNUSED(incW), int WXUNUSED(incH))
 610 {
 611     // setting min width greater than max width leads to infinite loops under
 612     // X11 and generally doesn't make any sense, so don't allow it
 613     wxCHECK_RET( (minW == wxDefaultCoord || maxW == wxDefaultCoord || minW <= maxW) &&
 614                     (minH == wxDefaultCoord || maxH == wxDefaultCoord || minH <= maxH),
 615                  _T("min width/height must be less than max width/height!") );
 616
 617     m_minWidth = minW;
 618     m_maxWidth = maxW;
 619     m_minHeight = minH;
 620     m_maxHeight = maxH;
 621 }
 622
 623 void wxWindowBase::SetWindowVariant( wxWindowVariant variant )
 624 {
 625     if ( m_windowVariant != variant )
 626     {
 627         m_windowVariant = variant;
 628
 629         DoSetWindowVariant(variant);
 630     }
 631 }
 632
 633 void wxWindowBase::DoSetWindowVariant( wxWindowVariant variant )
 634 {
 635     // adjust the font height to correspond to our new variant (notice that
 636     // we're only called if something really changed)
 637     wxFont font = GetFont();
 638     int size = font.GetPointSize();
 639     switch ( variant )
 640     {
 641         case wxWINDOW_VARIANT_NORMAL:
 642             break;
 643
 644         case wxWINDOW_VARIANT_SMALL:
 645             size *= 3;
 646             size /= 4;
 647             break;
 648
 649         case wxWINDOW_VARIANT_MINI:
 650             size *= 2;
 651             size /= 3;
 652             break;
 653
 654         case wxWINDOW_VARIANT_LARGE:
 655             size *= 5;
 656             size /= 4;
 657             break;
 658
 659         default:
 660             wxFAIL_MSG(_T("unexpected window variant"));
 661             break;
 662     }
 663
 664     font.SetPointSize(size);
 665     SetFont(font);
 666 }
 667
 668 void wxWindowBase::SetVirtualSizeHints( int minW, int minH,
 669                                         int maxW, int maxH )
 670 {
 671     m_minVirtualWidth = minW;
 672     m_maxVirtualWidth = maxW;
 673     m_minVirtualHeight = minH;
 674     m_maxVirtualHeight = maxH;
 675 }
 676
 677 void wxWindowBase::DoSetVirtualSize( int x, int y )
 678 {
 679     if ( m_minVirtualWidth != wxDefaultCoord && m_minVirtualWidth > x )
 680         x = m_minVirtualWidth;
 681     if ( m_maxVirtualWidth != wxDefaultCoord && m_maxVirtualWidth < x )
 682         x = m_maxVirtualWidth;
 683     if ( m_minVirtualHeight != wxDefaultCoord && m_minVirtualHeight > y )
 684         y = m_minVirtualHeight;
 685     if ( m_maxVirtualHeight != wxDefaultCoord && m_maxVirtualHeight < y )
 686         y = m_maxVirtualHeight;
 687
 688     m_virtualSize = wxSize(x, y);
 689 }
 690
 691 wxSize wxWindowBase::DoGetVirtualSize() const
 692 {
 693     // we should use the entire client area so if it is greater than our
 694     // virtual size, expand it to fit (otherwise if the window is big enough we
 695     // wouldn't be using parts of it)
 696     wxSize size = GetClientSize();
 697     if ( m_virtualSize.x > size.x )
 698         size.x = m_virtualSize.x;
 699
 700     if ( m_virtualSize.y >= size.y )
 701         size.y = m_virtualSize.y;
 702
 703     return size;
 704 }
 705
 706 void wxWindowBase::DoGetScreenPosition(int *x, int *y) const
 707 {
 708     // screen position is the same as (0, 0) in client coords for non TLWs (and
 709     // TLWs override this method)
 710     if ( x )
 711         *x = 0;
 712     if ( y )
 713         *y = 0;
 714
 715     ClientToScreen(x, y);
 716 }
 717
 718 // ----------------------------------------------------------------------------
 719 // show/hide/enable/disable the window
 720 // ----------------------------------------------------------------------------
 721
 722 bool wxWindowBase::Show(bool show)
 723 {
 724     if ( show != m_isShown )
 725     {
 726         m_isShown = show;
 727
 728         return true;
 729     }
 730     else
 731     {
 732         return false;
 733     }
 734 }
 735
 736 bool wxWindowBase::Enable(bool enable)
 737 {
 738     if ( enable != m_isEnabled )
 739     {
 740         m_isEnabled = enable;
 741
 742         return true;
 743     }
 744     else
 745     {
 746         return false;
 747     }
 748 }
 749
 750 bool wxWindowBase::IsVisible() const
 751 {
 752     return IsShown() && (GetParent() == NULL || GetParent()->IsVisible());
 753 }
 754
 755 // ----------------------------------------------------------------------------
 756 // RTTI
 757 // ----------------------------------------------------------------------------
 758
 759 bool wxWindowBase::IsTopLevel() const
 760 {
 761     return false;
 762 }
 763
 764 // ----------------------------------------------------------------------------
 765 // reparenting the window
 766 // ----------------------------------------------------------------------------
 767
 768 void wxWindowBase::AddChild(wxWindowBase *child)
 769 {
 770     wxCHECK_RET( child, wxT("can't add a NULL child") );
 771
 772     // this should never happen and it will lead to a crash later if it does
 773     // because RemoveChild() will remove only one node from the children list
 774     // and the other(s) one(s) will be left with dangling pointers in them
 775     wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), _T("AddChild() called twice") );
 776
 777     GetChildren().Append((wxWindow*)child);
 778     child->SetParent(this);
 779 }
 780
 781 void wxWindowBase::RemoveChild(wxWindowBase *child)
 782 {
 783     wxCHECK_RET( child, wxT("can't remove a NULL child") );
 784
 785     GetChildren().DeleteObject((wxWindow *)child);
 786     child->SetParent(NULL);
 787 }
 788
 789 bool wxWindowBase::Reparent(wxWindowBase *newParent)
 790 {
 791     wxWindow *oldParent = GetParent();
 792     if ( newParent == oldParent )
 793     {
 794         // nothing done
 795         return false;
 796     }
 797
 798     // unlink this window from the existing parent.
 799     if ( oldParent )
 800     {
 801         oldParent->RemoveChild(this);
 802     }
 803     else
 804     {
 805         wxTopLevelWindows.DeleteObject((wxWindow *)this);
 806     }
 807
 808     // add it to the new one
 809     if ( newParent )
 810     {
 811         newParent->AddChild(this);
 812     }
 813     else
 814     {
 815         wxTopLevelWindows.Append((wxWindow *)this);
 816     }
 817
 818     return true;
 819 }
 820
 821 // ----------------------------------------------------------------------------
 822 // event handler stuff
 823 // ----------------------------------------------------------------------------
 824
 825 void wxWindowBase::PushEventHandler(wxEvtHandler *handler)
 826 {
 827     wxEvtHandler *handlerOld = GetEventHandler();
 828
 829     handler->SetNextHandler(handlerOld);
 830
 831     if ( handlerOld )
 832         GetEventHandler()->SetPreviousHandler(handler);
 833
 834     SetEventHandler(handler);
 835 }
 836
 837 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
 838 {
 839     wxEvtHandler *handlerA = GetEventHandler();
 840     if ( handlerA )
 841     {
 842         wxEvtHandler *handlerB = handlerA->GetNextHandler();
 843         handlerA->SetNextHandler((wxEvtHandler *)NULL);
 844
 845         if ( handlerB )
 846             handlerB->SetPreviousHandler((wxEvtHandler *)NULL);
 847         SetEventHandler(handlerB);
 848
 849         if ( deleteHandler )
 850         {
 851             delete handlerA;
 852             handlerA = (wxEvtHandler *)NULL;
 853         }
 854     }
 855
 856     return handlerA;
 857 }
 858
 859 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handler)
 860 {
 861     wxCHECK_MSG( handler, false, _T("RemoveEventHandler(NULL) called") );
 862
 863     wxEvtHandler *handlerPrev = NULL,
 864                  *handlerCur = GetEventHandler();
 865     while ( handlerCur )
 866     {
 867         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
 868
 869         if ( handlerCur == handler )
 870         {
 871             if ( handlerPrev )
 872             {
 873                 handlerPrev->SetNextHandler(handlerNext);
 874             }
 875             else
 876             {
 877                 SetEventHandler(handlerNext);
 878             }
 879
 880             if ( handlerNext )
 881             {
 882                 handlerNext->SetPreviousHandler ( handlerPrev );
 883             }
 884
 885             handler->SetNextHandler(NULL);
 886             handler->SetPreviousHandler(NULL);
 887
 888             return true;
 889         }
 890
 891         handlerPrev = handlerCur;
 892         handlerCur = handlerNext;
 893     }
 894
 895     wxFAIL_MSG( _T("where has the event handler gone?") );
 896
 897     return false;
 898 }
 899
 900 // ----------------------------------------------------------------------------
 901 // colours, fonts &c
 902 // ----------------------------------------------------------------------------
 903
 904 void wxWindowBase::InheritAttributes()
 905 {
 906     const wxWindowBase * const parent = GetParent();
 907     if ( !parent )
 908         return;
 909
 910     // we only inherit attributes which had been explicitly set for the parent
 911     // which ensures that this only happens if the user really wants it and
 912     // not by default which wouldn't make any sense in modern GUIs where the
 913     // controls don't all use the same fonts (nor colours)
 914     if ( parent->m_inheritFont && !m_hasFont )
 915         SetFont(parent->GetFont());
 916
 917     // in addition, there is a possibility to explicitly forbid inheriting
 918     // colours at each class level by overriding ShouldInheritColours()
 919     if ( ShouldInheritColours() )
 920     {
 921         if ( parent->m_inheritFgCol && !m_hasFgCol )
 922             SetForegroundColour(parent->GetForegroundColour());
 923
 924         // inheriting (solid) background colour is wrong as it totally breaks
 925         // any kind of themed backgrounds
 926         //
 927         // instead, the controls should use the same background as their parent
 928         // (ideally by not drawing it at all)
 929 #if 0
 930         if ( parent->m_inheritBgCol && !m_hasBgCol )
 931             SetBackgroundColour(parent->GetBackgroundColour());
 932 #endif // 0
 933     }
 934 }
 935
 936 /* static */ wxVisualAttributes
 937 wxWindowBase::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 938 {
 939     // it is important to return valid values for all attributes from here,
 940     // GetXXX() below rely on this
 941     wxVisualAttributes attrs;
 942     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
 943     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
 944
 945     // On Smartphone/PocketPC, wxSYS_COLOUR_WINDOW is a better reflection of
 946     // the usual background colour than wxSYS_COLOUR_BTNFACE.
 947     // It's a pity that wxSYS_COLOUR_WINDOW isn't always a suitable background
 948     // colour on other platforms.
 949
 950 #if defined(__WXWINCE__) && (defined(__SMARTPHONE__) || defined(__POCKETPC__))
 951     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
 952 #else
 953     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
 954 #endif
 955     return attrs;
 956 }
 957
 958 wxColour wxWindowBase::GetBackgroundColour() const
 959 {
 960     if ( !m_backgroundColour.Ok() )
 961     {
 962         wxASSERT_MSG( !m_hasBgCol, _T("we have invalid explicit bg colour?") );
 963
 964         // get our default background colour
 965         wxColour colBg = GetDefaultAttributes().colBg;
 966
 967         // we must return some valid colour to avoid redoing this every time
 968         // and also to avoid surprizing the applications written for older
 969         // wxWidgets versions where GetBackgroundColour() always returned
 970         // something -- so give them something even if it doesn't make sense
 971         // for this window (e.g. it has a themed background)
 972         if ( !colBg.Ok() )
 973             colBg = GetClassDefaultAttributes().colBg;
 974
 975         return colBg;
 976     }
 977     else
 978         return m_backgroundColour;
 979 }
 980
 981 wxColour wxWindowBase::GetForegroundColour() const
 982 {
 983     // logic is the same as above
 984     if ( !m_hasFgCol && !m_foregroundColour.Ok() )
 985     {
 986         wxASSERT_MSG( !m_hasFgCol, _T("we have invalid explicit fg colour?") );
 987
 988         wxColour colFg = GetDefaultAttributes().colFg;
 989
 990         if ( !colFg.Ok() )
 991             colFg = GetClassDefaultAttributes().colFg;
 992
 993         return colFg;
 994     }
 995     else
 996         return m_foregroundColour;
 997 }
 998
 999 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
1000 {
1001     if ( colour == m_backgroundColour )
1002         return false;
1003
1004     m_hasBgCol = colour.Ok();
1005     if ( m_backgroundStyle != wxBG_STYLE_CUSTOM )
1006         m_backgroundStyle = m_hasBgCol ? wxBG_STYLE_COLOUR : wxBG_STYLE_SYSTEM;
1007
1008     m_inheritBgCol = m_hasBgCol;
1009     m_backgroundColour = colour;
1010     SetThemeEnabled( !m_hasBgCol && !m_foregroundColour.Ok() );
1011     return true;
1012 }
1013
1014 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
1015 {
1016     if (colour == m_foregroundColour )
1017         return false;
1018
1019     m_hasFgCol = colour.Ok();
1020     m_inheritFgCol = m_hasFgCol;
1021     m_foregroundColour = colour;
1022     SetThemeEnabled( !m_hasFgCol && !m_backgroundColour.Ok() );
1023     return true;
1024 }
1025
1026 bool wxWindowBase::SetCursor(const wxCursor& cursor)
1027 {
1028     // setting an invalid cursor is ok, it means that we don't have any special
1029     // cursor
1030     if ( m_cursor == cursor )
1031     {
1032         // no change
1033         return false;
1034     }
1035
1036     m_cursor = cursor;
1037
1038     return true;
1039 }
1040
1041 wxFont wxWindowBase::GetFont() const
1042 {
1043     // logic is the same as in GetBackgroundColour()
1044     if ( !m_font.Ok() )
1045     {
1046         wxASSERT_MSG( !m_hasFont, _T("we have invalid explicit font?") );
1047
1048         wxFont font = GetDefaultAttributes().font;
1049         if ( !font.Ok() )
1050             font = GetClassDefaultAttributes().font;
1051
1052         return font;
1053     }
1054     else
1055         return m_font;
1056 }
1057
1058 bool wxWindowBase::SetFont(const wxFont& font)
1059 {
1060     if ( font == m_font )
1061     {
1062         // no change
1063         return false;
1064     }
1065
1066     m_font = font;
1067     m_hasFont = font.Ok();
1068     m_inheritFont = m_hasFont;
1069
1070     InvalidateBestSize();
1071
1072     return true;
1073 }
1074
1075 #if wxUSE_PALETTE
1076
1077 void wxWindowBase::SetPalette(const wxPalette& pal)
1078 {
1079     m_hasCustomPalette = true;
1080     m_palette = pal;
1081
1082     // VZ: can anyone explain me what do we do here?
1083     wxWindowDC d((wxWindow *) this);
1084     d.SetPalette(pal);
1085 }
1086
1087 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
1088 {
1089     wxWindow *win = (wxWindow *)this;
1090     while ( win && !win->HasCustomPalette() )
1091     {
1092         win = win->GetParent();
1093     }
1094
1095     return win;
1096 }
1097
1098 #endif // wxUSE_PALETTE
1099
1100 #if wxUSE_CARET
1101 void wxWindowBase::SetCaret(wxCaret *caret)
1102 {
1103     if ( m_caret )
1104     {
1105         delete m_caret;
1106     }
1107
1108     m_caret = caret;
1109
1110     if ( m_caret )
1111     {
1112         wxASSERT_MSG( m_caret->GetWindow() == this,
1113                       wxT("caret should be created associated to this window") );
1114     }
1115 }
1116 #endif // wxUSE_CARET
1117
1118 #if wxUSE_VALIDATORS
1119 // ----------------------------------------------------------------------------
1120 // validators
1121 // ----------------------------------------------------------------------------
1122
1123 void wxWindowBase::SetValidator(const wxValidator& validator)
1124 {
1125     if ( m_windowValidator )
1126         delete m_windowValidator;
1127
1128     m_windowValidator = (wxValidator *)validator.Clone();
1129
1130     if ( m_windowValidator )
1131         m_windowValidator->SetWindow(this);
1132 }
1133 #endif // wxUSE_VALIDATORS
1134
1135 // ----------------------------------------------------------------------------
1136 // update region stuff
1137 // ----------------------------------------------------------------------------
1138
1139 wxRect wxWindowBase::GetUpdateClientRect() const
1140 {
1141     wxRegion rgnUpdate = GetUpdateRegion();
1142     rgnUpdate.Intersect(GetClientRect());
1143     wxRect rectUpdate = rgnUpdate.GetBox();
1144     wxPoint ptOrigin = GetClientAreaOrigin();
1145     rectUpdate.x -= ptOrigin.x;
1146     rectUpdate.y -= ptOrigin.y;
1147
1148     return rectUpdate;
1149 }
1150
1151 bool wxWindowBase::DoIsExposed(int x, int y) const
1152 {
1153     return m_updateRegion.Contains(x, y) != wxOutRegion;
1154 }
1155
1156 bool wxWindowBase::DoIsExposed(int x, int y, int w, int h) const
1157 {
1158     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
1159 }
1160
1161 void wxWindowBase::ClearBackground()
1162 {
1163     // wxGTK uses its own version, no need to add never used code
1164 #ifndef __WXGTK__
1165     wxClientDC dc((wxWindow *)this);
1166     wxBrush brush(GetBackgroundColour(), wxSOLID);
1167     dc.SetBackground(brush);
1168     dc.Clear();
1169 #endif // __WXGTK__
1170 }
1171
1172 // ----------------------------------------------------------------------------
1173 // find child window by id or name
1174 // ----------------------------------------------------------------------------
1175
1176 wxWindow *wxWindowBase::FindWindow(long id) const
1177 {
1178     if ( id == m_windowId )
1179         return (wxWindow *)this;
1180
1181     wxWindowBase *res = (wxWindow *)NULL;
1182     wxWindowList::compatibility_iterator node;
1183     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1184     {
1185         wxWindowBase *child = node->GetData();
1186         res = child->FindWindow( id );
1187     }
1188
1189     return (wxWindow *)res;
1190 }
1191
1192 wxWindow *wxWindowBase::FindWindow(const wxString& name) const
1193 {
1194     if ( name == m_windowName )
1195         return (wxWindow *)this;
1196
1197     wxWindowBase *res = (wxWindow *)NULL;
1198     wxWindowList::compatibility_iterator node;
1199     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1200     {
1201         wxWindow *child = node->GetData();
1202         res = child->FindWindow(name);
1203     }
1204
1205     return (wxWindow *)res;
1206 }
1207
1208
1209 // find any window by id or name or label: If parent is non-NULL, look through
1210 // children for a label or title matching the specified string. If NULL, look
1211 // through all top-level windows.
1212 //
1213 // to avoid duplicating code we reuse the same helper function but with
1214 // different comparators
1215
1216 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1217                                 const wxString& label, long id);
1218
1219 static
1220 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1221                            long WXUNUSED(id))
1222 {
1223     return win->GetLabel() == label;
1224 }
1225
1226 static
1227 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1228                           long WXUNUSED(id))
1229 {
1230     return win->GetName() == label;
1231 }
1232
1233 static
1234 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1235                         long id)
1236 {
1237     return win->GetId() == id;
1238 }
1239
1240 // recursive helper for the FindWindowByXXX() functions
1241 static
1242 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1243                                   const wxString& label,
1244                                   long id,
1245                                   wxFindWindowCmp cmp)
1246 {
1247     if ( parent )
1248     {
1249         // see if this is the one we're looking for
1250         if ( (*cmp)(parent, label, id) )
1251             return (wxWindow *)parent;
1252
1253         // It wasn't, so check all its children
1254         for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
1255               node;
1256               node = node->GetNext() )
1257         {
1258             // recursively check each child
1259             wxWindow *win = (wxWindow *)node->GetData();
1260             wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1261             if (retwin)
1262                 return retwin;
1263         }
1264     }
1265
1266     // Not found
1267     return NULL;
1268 }
1269
1270 // helper for FindWindowByXXX()
1271 static
1272 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1273                              const wxString& label,
1274                              long id,
1275                              wxFindWindowCmp cmp)
1276 {
1277     if ( parent )
1278     {
1279         // just check parent and all its children
1280         return wxFindWindowRecursively(parent, label, id, cmp);
1281     }
1282
1283     // start at very top of wx's windows
1284     for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1285           node;
1286           node = node->GetNext() )
1287     {
1288         // recursively check each window & its children
1289         wxWindow *win = node->GetData();
1290         wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1291         if (retwin)
1292             return retwin;
1293     }
1294
1295     return NULL;
1296 }
1297
1298 /* static */
1299 wxWindow *
1300 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1301 {
1302     return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1303 }
1304
1305 /* static */
1306 wxWindow *
1307 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1308 {
1309     wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1310
1311     if ( !win )
1312     {
1313         // fall back to the label
1314         win = FindWindowByLabel(title, parent);
1315     }
1316
1317     return win;
1318 }
1319
1320 /* static */
1321 wxWindow *
1322 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1323 {
1324     return wxFindWindowHelper(parent, wxEmptyString, id, wxFindWindowCmpIds);
1325 }
1326
1327 // ----------------------------------------------------------------------------
1328 // dialog oriented functions
1329 // ----------------------------------------------------------------------------
1330
1331 void wxWindowBase::MakeModal(bool modal)
1332 {
1333     // Disable all other windows
1334     if ( IsTopLevel() )
1335     {
1336         wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1337         while (node)
1338         {
1339             wxWindow *win = node->GetData();
1340             if (win != this)
1341                 win->Enable(!modal);
1342
1343             node = node->GetNext();
1344         }
1345     }
1346 }
1347
1348 bool wxWindowBase::Validate()
1349 {
1350 #if wxUSE_VALIDATORS
1351     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1352
1353     wxWindowList::compatibility_iterator node;
1354     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1355     {
1356         wxWindowBase *child = node->GetData();
1357         wxValidator *validator = child->GetValidator();
1358         if ( validator && !validator->Validate((wxWindow *)this) )
1359         {
1360             return false;
1361         }
1362
1363         if ( recurse && !child->Validate() )
1364         {
1365             return false;
1366         }
1367     }
1368 #endif // wxUSE_VALIDATORS
1369
1370     return true;
1371 }
1372
1373 bool wxWindowBase::TransferDataToWindow()
1374 {
1375 #if wxUSE_VALIDATORS
1376     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1377
1378     wxWindowList::compatibility_iterator node;
1379     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1380     {
1381         wxWindowBase *child = node->GetData();
1382         wxValidator *validator = child->GetValidator();
1383         if ( validator && !validator->TransferToWindow() )
1384         {
1385             wxLogWarning(_("Could not transfer data to window"));
1386 #if wxUSE_LOG
1387             wxLog::FlushActive();
1388 #endif // wxUSE_LOG
1389
1390             return false;
1391         }
1392
1393         if ( recurse )
1394         {
1395             if ( !child->TransferDataToWindow() )
1396             {
1397                 // warning already given
1398                 return false;
1399             }
1400         }
1401     }
1402 #endif // wxUSE_VALIDATORS
1403
1404     return true;
1405 }
1406
1407 bool wxWindowBase::TransferDataFromWindow()
1408 {
1409 #if wxUSE_VALIDATORS
1410     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1411
1412     wxWindowList::compatibility_iterator node;
1413     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1414     {
1415         wxWindow *child = node->GetData();
1416         wxValidator *validator = child->GetValidator();
1417         if ( validator && !validator->TransferFromWindow() )
1418         {
1419             // nop warning here because the application is supposed to give
1420             // one itself - we don't know here what might have gone wrongly
1421
1422             return false;
1423         }
1424
1425         if ( recurse )
1426         {
1427             if ( !child->TransferDataFromWindow() )
1428             {
1429                 // warning already given
1430                 return false;
1431             }
1432         }
1433     }
1434 #endif // wxUSE_VALIDATORS
1435
1436     return true;
1437 }
1438
1439 void wxWindowBase::InitDialog()
1440 {
1441     wxInitDialogEvent event(GetId());
1442     event.SetEventObject( this );
1443     GetEventHandler()->ProcessEvent(event);
1444 }
1445
1446 // ----------------------------------------------------------------------------
1447 // context-sensitive help support
1448 // ----------------------------------------------------------------------------
1449
1450 #if wxUSE_HELP
1451
1452 // associate this help text with this window
1453 void wxWindowBase::SetHelpText(const wxString& text)
1454 {
1455     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1456     if ( helpProvider )
1457     {
1458         helpProvider->AddHelp(this, text);
1459     }
1460 }
1461
1462 // associate this help text with all windows with the same id as this
1463 // one
1464 void wxWindowBase::SetHelpTextForId(const wxString& text)
1465 {
1466     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1467     if ( helpProvider )
1468     {
1469         helpProvider->AddHelp(GetId(), text);
1470     }
1471 }
1472
1473 // get the help string associated with this window (may be empty)
1474 // default implementation forwards calls to the help provider
1475 wxString
1476 wxWindowBase::GetHelpTextAtPoint(const wxPoint & WXUNUSED(pt),
1477                                  wxHelpEvent::Origin WXUNUSED(origin)) const
1478 {
1479     wxString text;
1480     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1481     if ( helpProvider )
1482     {
1483         text = helpProvider->GetHelp(this);
1484     }
1485
1486     return text;
1487 }
1488
1489 // show help for this window
1490 void wxWindowBase::OnHelp(wxHelpEvent& event)
1491 {
1492     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1493     if ( helpProvider )
1494     {
1495         if ( helpProvider->ShowHelpAtPoint(this, event.GetPosition(), event.GetOrigin()) )
1496         {
1497             // skip the event.Skip() below
1498             return;
1499         }
1500     }
1501
1502     event.Skip();
1503 }
1504
1505 #endif // wxUSE_HELP
1506
1507 // ----------------------------------------------------------------------------
1508 // tooltipsroot.Replace("\\", "/");
1509 // ----------------------------------------------------------------------------
1510
1511 #if wxUSE_TOOLTIPS
1512
1513 void wxWindowBase::SetToolTip( const wxString &tip )
1514 {
1515     // don't create the new tooltip if we already have one
1516     if ( m_tooltip )
1517     {
1518         m_tooltip->SetTip( tip );
1519     }
1520     else
1521     {
1522         SetToolTip( new wxToolTip( tip ) );
1523     }
1524
1525     // setting empty tooltip text does not remove the tooltip any more - use
1526     // SetToolTip((wxToolTip *)NULL) for this
1527 }
1528
1529 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1530 {
1531     if ( m_tooltip != tooltip )
1532     {
1533         if ( m_tooltip )
1534             delete m_tooltip;
1535
1536         m_tooltip = tooltip;
1537     }
1538 }
1539
1540 #endif // wxUSE_TOOLTIPS
1541
1542 // ----------------------------------------------------------------------------
1543 // constraints and sizers
1544 // ----------------------------------------------------------------------------
1545
1546 #if wxUSE_CONSTRAINTS
1547
1548 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1549 {
1550     if ( m_constraints )
1551     {
1552         UnsetConstraints(m_constraints);
1553         delete m_constraints;
1554     }
1555     m_constraints = constraints;
1556     if ( m_constraints )
1557     {
1558         // Make sure other windows know they're part of a 'meaningful relationship'
1559         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1560             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1561         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1562             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1563         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1564             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1565         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1566             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1567         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1568             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1569         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1570             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1571         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1572             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1573         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1574             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1575     }
1576 }
1577
1578 // This removes any dangling pointers to this window in other windows'
1579 // constraintsInvolvedIn lists.
1580 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1581 {
1582     if ( c )
1583     {
1584         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1585             c->left.GetOtherWindow()->RemoveConstraintReference(this);
1586         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1587             c->top.GetOtherWindow()->RemoveConstraintReference(this);
1588         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1589             c->right.GetOtherWindow()->RemoveConstraintReference(this);
1590         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1591             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1592         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1593             c->width.GetOtherWindow()->RemoveConstraintReference(this);
1594         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1595             c->height.GetOtherWindow()->RemoveConstraintReference(this);
1596         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1597             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
1598         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
1599             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
1600     }
1601 }
1602
1603 // Back-pointer to other windows we're involved with, so if we delete this
1604 // window, we must delete any constraints we're involved with.
1605 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
1606 {
1607     if ( !m_constraintsInvolvedIn )
1608         m_constraintsInvolvedIn = new wxWindowList;
1609     if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
1610         m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
1611 }
1612
1613 // REMOVE back-pointer to other windows we're involved with.
1614 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
1615 {
1616     if ( m_constraintsInvolvedIn )
1617         m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
1618 }
1619
1620 // Reset any constraints that mention this window
1621 void wxWindowBase::DeleteRelatedConstraints()
1622 {
1623     if ( m_constraintsInvolvedIn )
1624     {
1625         wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
1626         while (node)
1627         {
1628             wxWindow *win = node->GetData();
1629             wxLayoutConstraints *constr = win->GetConstraints();
1630
1631             // Reset any constraints involving this window
1632             if ( constr )
1633             {
1634                 constr->left.ResetIfWin(this);
1635                 constr->top.ResetIfWin(this);
1636                 constr->right.ResetIfWin(this);
1637                 constr->bottom.ResetIfWin(this);
1638                 constr->width.ResetIfWin(this);
1639                 constr->height.ResetIfWin(this);
1640                 constr->centreX.ResetIfWin(this);
1641                 constr->centreY.ResetIfWin(this);
1642             }
1643
1644             wxWindowList::compatibility_iterator next = node->GetNext();
1645             m_constraintsInvolvedIn->Erase(node);
1646             node = next;
1647         }
1648
1649         delete m_constraintsInvolvedIn;
1650         m_constraintsInvolvedIn = (wxWindowList *) NULL;
1651     }
1652 }
1653
1654 #endif // wxUSE_CONSTRAINTS
1655
1656 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
1657 {
1658     if ( sizer == m_windowSizer)
1659         return;
1660
1661     if ( m_windowSizer )
1662     {
1663         m_windowSizer->SetContainingWindow(NULL);
1664
1665         if ( deleteOld )
1666             delete m_windowSizer;
1667     }
1668
1669     m_windowSizer = sizer;
1670     if ( m_windowSizer )
1671     {
1672         m_windowSizer->SetContainingWindow((wxWindow *)this);
1673     }
1674
1675     SetAutoLayout(m_windowSizer != NULL);
1676 }
1677
1678 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
1679 {
1680     SetSizer( sizer, deleteOld );
1681     sizer->SetSizeHints( (wxWindow*) this );
1682 }
1683
1684
1685 void wxWindowBase::SetContainingSizer(wxSizer* sizer)
1686 {
1687     // adding a window to a sizer twice is going to result in fatal and
1688     // hard to debug problems later because when deleting the second
1689     // associated wxSizerItem we're going to dereference a dangling
1690     // pointer; so try to detect this as early as possible
1691     wxASSERT_MSG( !sizer || m_containingSizer != sizer,
1692                   _T("Adding a window to the same sizer twice?") );
1693
1694     m_containingSizer = sizer;
1695 }
1696
1697 #if wxUSE_CONSTRAINTS
1698
1699 void wxWindowBase::SatisfyConstraints()
1700 {
1701     wxLayoutConstraints *constr = GetConstraints();
1702     bool wasOk = constr && constr->AreSatisfied();
1703
1704     ResetConstraints();   // Mark all constraints as unevaluated
1705
1706     int noChanges = 1;
1707
1708     // if we're a top level panel (i.e. our parent is frame/dialog), our
1709     // own constraints will never be satisfied any more unless we do it
1710     // here
1711     if ( wasOk )
1712     {
1713         while ( noChanges > 0 )
1714         {
1715             LayoutPhase1(&noChanges);
1716         }
1717     }
1718
1719     LayoutPhase2(&noChanges);
1720 }
1721
1722 #endif // wxUSE_CONSTRAINTS
1723
1724 bool wxWindowBase::Layout()
1725 {
1726     // If there is a sizer, use it instead of the constraints
1727     if ( GetSizer() )
1728     {
1729         int w = 0, h = 0;
1730         GetVirtualSize(&w, &h);
1731         GetSizer()->SetDimension( 0, 0, w, h );
1732     }
1733 #if wxUSE_CONSTRAINTS
1734     else
1735     {
1736         SatisfyConstraints(); // Find the right constraints values
1737         SetConstraintSizes(); // Recursively set the real window sizes
1738     }
1739 #endif
1740
1741     return true;
1742 }
1743
1744 #if wxUSE_CONSTRAINTS
1745
1746 // first phase of the constraints evaluation: set our own constraints
1747 bool wxWindowBase::LayoutPhase1(int *noChanges)
1748 {
1749     wxLayoutConstraints *constr = GetConstraints();
1750
1751     return !constr || constr->SatisfyConstraints(this, noChanges);
1752 }
1753
1754 // second phase: set the constraints for our children
1755 bool wxWindowBase::LayoutPhase2(int *noChanges)
1756 {
1757     *noChanges = 0;
1758
1759     // Layout children
1760     DoPhase(1);
1761
1762     // Layout grand children
1763     DoPhase(2);
1764
1765     return true;
1766 }
1767
1768 // Do a phase of evaluating child constraints
1769 bool wxWindowBase::DoPhase(int phase)
1770 {
1771     // the list containing the children for which the constraints are already
1772     // set correctly
1773     wxWindowList succeeded;
1774
1775     // the max number of iterations we loop before concluding that we can't set
1776     // the constraints
1777     static const int maxIterations = 500;
1778
1779     for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
1780     {
1781         int noChanges = 0;
1782
1783         // loop over all children setting their constraints
1784         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1785               node;
1786               node = node->GetNext() )
1787         {
1788             wxWindow *child = node->GetData();
1789             if ( child->IsTopLevel() )
1790             {
1791                 // top level children are not inside our client area
1792                 continue;
1793             }
1794
1795             if ( !child->GetConstraints() || succeeded.Find(child) )
1796             {
1797                 // this one is either already ok or nothing we can do about it
1798                 continue;
1799             }
1800
1801             int tempNoChanges = 0;
1802             bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
1803                                       : child->LayoutPhase2(&tempNoChanges);
1804             noChanges += tempNoChanges;
1805
1806             if ( success )
1807             {
1808                 succeeded.Append(child);
1809             }
1810         }
1811
1812         if ( !noChanges )
1813         {
1814             // constraints are set
1815             break;
1816         }
1817     }
1818
1819     return true;
1820 }
1821
1822 void wxWindowBase::ResetConstraints()
1823 {
1824     wxLayoutConstraints *constr = GetConstraints();
1825     if ( constr )
1826     {
1827         constr->left.SetDone(false);
1828         constr->top.SetDone(false);
1829         constr->right.SetDone(false);
1830         constr->bottom.SetDone(false);
1831         constr->width.SetDone(false);
1832         constr->height.SetDone(false);
1833         constr->centreX.SetDone(false);
1834         constr->centreY.SetDone(false);
1835     }
1836
1837     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1838     while (node)
1839     {
1840         wxWindow *win = node->GetData();
1841         if ( !win->IsTopLevel() )
1842             win->ResetConstraints();
1843         node = node->GetNext();
1844     }
1845 }
1846
1847 // Need to distinguish between setting the 'fake' size for windows and sizers,
1848 // and setting the real values.
1849 void wxWindowBase::SetConstraintSizes(bool recurse)
1850 {
1851     wxLayoutConstraints *constr = GetConstraints();
1852     if ( constr && constr->AreSatisfied() )
1853     {
1854         int x = constr->left.GetValue();
1855         int y = constr->top.GetValue();
1856         int w = constr->width.GetValue();
1857         int h = constr->height.GetValue();
1858
1859         if ( (constr->width.GetRelationship() != wxAsIs ) ||
1860              (constr->height.GetRelationship() != wxAsIs) )
1861         {
1862             SetSize(x, y, w, h);
1863         }
1864         else
1865         {
1866             // If we don't want to resize this window, just move it...
1867             Move(x, y);
1868         }
1869     }
1870     else if ( constr )
1871     {
1872         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
1873                    GetClassInfo()->GetClassName(),
1874                    GetName().c_str());
1875     }
1876
1877     if ( recurse )
1878     {
1879         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1880         while (node)
1881         {
1882             wxWindow *win = node->GetData();
1883             if ( !win->IsTopLevel() && win->GetConstraints() )
1884                 win->SetConstraintSizes();
1885             node = node->GetNext();
1886         }
1887     }
1888 }
1889
1890 // Only set the size/position of the constraint (if any)
1891 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
1892 {
1893     wxLayoutConstraints *constr = GetConstraints();
1894     if ( constr )
1895     {
1896         if ( x != wxDefaultCoord )
1897         {
1898             constr->left.SetValue(x);
1899             constr->left.SetDone(true);
1900         }
1901         if ( y != wxDefaultCoord )
1902         {
1903             constr->top.SetValue(y);
1904             constr->top.SetDone(true);
1905         }
1906         if ( w != wxDefaultCoord )
1907         {
1908             constr->width.SetValue(w);
1909             constr->width.SetDone(true);
1910         }
1911         if ( h != wxDefaultCoord )
1912         {
1913             constr->height.SetValue(h);
1914             constr->height.SetDone(true);
1915         }
1916     }
1917 }
1918
1919 void wxWindowBase::MoveConstraint(int x, int y)
1920 {
1921     wxLayoutConstraints *constr = GetConstraints();
1922     if ( constr )
1923     {
1924         if ( x != wxDefaultCoord )
1925         {
1926             constr->left.SetValue(x);
1927             constr->left.SetDone(true);
1928         }
1929         if ( y != wxDefaultCoord )
1930         {
1931             constr->top.SetValue(y);
1932             constr->top.SetDone(true);
1933         }
1934     }
1935 }
1936
1937 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
1938 {
1939     wxLayoutConstraints *constr = GetConstraints();
1940     if ( constr )
1941     {
1942         *w = constr->width.GetValue();
1943         *h = constr->height.GetValue();
1944     }
1945     else
1946         GetSize(w, h);
1947 }
1948
1949 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
1950 {
1951     wxLayoutConstraints *constr = GetConstraints();
1952     if ( constr )
1953     {
1954         *w = constr->width.GetValue();
1955         *h = constr->height.GetValue();
1956     }
1957     else
1958         GetClientSize(w, h);
1959 }
1960
1961 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
1962 {
1963     wxLayoutConstraints *constr = GetConstraints();
1964     if ( constr )
1965     {
1966         *x = constr->left.GetValue();
1967         *y = constr->top.GetValue();
1968     }
1969     else
1970         GetPosition(x, y);
1971 }
1972
1973 #endif // wxUSE_CONSTRAINTS
1974
1975 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
1976 {
1977     // don't do it for the dialogs/frames - they float independently of their
1978     // parent
1979     if ( !IsTopLevel() )
1980     {
1981         wxWindow *parent = GetParent();
1982         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
1983         {
1984             wxPoint pt(parent->GetClientAreaOrigin());
1985             x += pt.x;
1986             y += pt.y;
1987         }
1988     }
1989 }
1990
1991 // ----------------------------------------------------------------------------
1992 // do Update UI processing for child controls
1993 // ----------------------------------------------------------------------------
1994
1995 void wxWindowBase::UpdateWindowUI(long flags)
1996 {
1997     wxUpdateUIEvent event(GetId());
1998     event.SetEventObject(this);
1999
2000     if ( GetEventHandler()->ProcessEvent(event) )
2001     {
2002         DoUpdateWindowUI(event);
2003     }
2004
2005     if (flags & wxUPDATE_UI_RECURSE)
2006     {
2007         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2008         while (node)
2009         {
2010             wxWindow* child = (wxWindow*) node->GetData();
2011             child->UpdateWindowUI(flags);
2012             node = node->GetNext();
2013         }
2014     }
2015 }
2016
2017 // do the window-specific processing after processing the update event
2018 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
2019 {
2020     if ( event.GetSetEnabled() )
2021         Enable(event.GetEnabled());
2022
2023     if ( event.GetSetShown() )
2024         Show(event.GetShown());
2025 }
2026
2027 #if 0
2028 // call internal idle recursively
2029 // may be obsolete (wait until OnIdle scheme stabilises)
2030 void wxWindowBase::ProcessInternalIdle()
2031 {
2032     OnInternalIdle();
2033
2034     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2035     while (node)
2036     {
2037         wxWindow *child = node->GetData();
2038         child->ProcessInternalIdle();
2039         node = node->GetNext();
2040     }
2041 }
2042 #endif
2043
2044 // ----------------------------------------------------------------------------
2045 // dialog units translations
2046 // ----------------------------------------------------------------------------
2047
2048 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
2049 {
2050     int charWidth = GetCharWidth();
2051     int charHeight = GetCharHeight();
2052     wxPoint pt2 = wxDefaultPosition;
2053     if (pt.x != wxDefaultCoord)
2054         pt2.x = (int) ((pt.x * 4) / charWidth);
2055     if (pt.y != wxDefaultCoord)
2056         pt2.y = (int) ((pt.y * 8) / charHeight);
2057
2058     return pt2;
2059 }
2060
2061 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
2062 {
2063     int charWidth = GetCharWidth();
2064     int charHeight = GetCharHeight();
2065     wxPoint pt2 = wxDefaultPosition;
2066     if (pt.x != wxDefaultCoord)
2067         pt2.x = (int) ((pt.x * charWidth) / 4);
2068     if (pt.y != wxDefaultCoord)
2069         pt2.y = (int) ((pt.y * charHeight) / 8);
2070
2071     return pt2;
2072 }
2073
2074 // ----------------------------------------------------------------------------
2075 // event handlers
2076 // ----------------------------------------------------------------------------
2077
2078 // propagate the colour change event to the subwindows
2079 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
2080 {
2081     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2082     while ( node )
2083     {
2084         // Only propagate to non-top-level windows
2085         wxWindow *win = node->GetData();
2086         if ( !win->IsTopLevel() )
2087         {
2088             wxSysColourChangedEvent event2;
2089             event.SetEventObject(win);
2090             win->GetEventHandler()->ProcessEvent(event2);
2091         }
2092
2093         node = node->GetNext();
2094     }
2095
2096     Refresh();
2097 }
2098
2099 // the default action is to populate dialog with data when it's created,
2100 // and nudge the UI into displaying itself correctly in case
2101 // we've turned the wxUpdateUIEvents frequency down low.
2102 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
2103 {
2104     TransferDataToWindow();
2105
2106     // Update the UI at this point
2107     UpdateWindowUI(wxUPDATE_UI_RECURSE);
2108 }
2109
2110 // methods for drawing the sizers in a visible way
2111 #ifdef __WXDEBUG__
2112
2113 static void DrawSizers(wxWindowBase *win);
2114
2115 static void DrawBorder(wxWindowBase *win, const wxRect& rect, bool fill = false)
2116 {
2117     wxClientDC dc((wxWindow *)win);
2118     dc.SetPen(*wxRED_PEN);
2119     dc.SetBrush(fill ? wxBrush(*wxRED, wxCROSSDIAG_HATCH): *wxTRANSPARENT_BRUSH);
2120     dc.DrawRectangle(rect.Deflate(1, 1));
2121 }
2122
2123 static void DrawSizer(wxWindowBase *win, wxSizer *sizer)
2124 {
2125     const wxSizerItemList& items = sizer->GetChildren();
2126     for ( wxSizerItemList::const_iterator i = items.begin(),
2127                                         end = items.end();
2128           i != end;
2129           ++i )
2130     {
2131         wxSizerItem *item = *i;
2132         if ( item->IsSizer() )
2133         {
2134             DrawBorder(win, item->GetRect().Deflate(2));
2135             DrawSizer(win, item->GetSizer());
2136         }
2137         else if ( item->IsSpacer() )
2138         {
2139             DrawBorder(win, item->GetRect().Deflate(2), true);
2140         }
2141         else if ( item->IsWindow() )
2142         {
2143             DrawSizers(item->GetWindow());
2144         }
2145     }
2146 }
2147
2148 static void DrawSizers(wxWindowBase *win)
2149 {
2150     wxSizer *sizer = win->GetSizer();
2151     if ( sizer )
2152     {
2153         DrawBorder(win, win->GetClientSize());
2154         DrawSizer(win, sizer);
2155     }
2156     else // no sizer, still recurse into the children
2157     {
2158         const wxWindowList& children = win->GetChildren();
2159         for ( wxWindowList::const_iterator i = children.begin(),
2160                                          end = children.end();
2161               i != end;
2162               ++i )
2163         {
2164             DrawSizers(*i);
2165         }
2166     }
2167 }
2168
2169 #endif // __WXDEBUG__
2170
2171 // process special middle clicks
2172 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
2173 {
2174     if ( event.ControlDown() && event.AltDown() )
2175     {
2176 #ifdef __WXDEBUG__
2177         // Ctrl-Alt-Shift-mclick makes the sizers visible in debug builds
2178         if ( event.ShiftDown() )
2179         {
2180             DrawSizers(this);
2181             return;
2182         }
2183 #endif // __WXDEBUG__
2184
2185 #if wxUSE_MSGDLG
2186         // don't translate these strings, they're for diagnostics purposes only
2187         wxString msg;
2188         msg.Printf(_T("wxWidgets Library (%s port)\n")
2189                    _T("Version %d.%d.%d%s%s, compiled at %s %s%s\n")
2190                    _T("Copyright (c) 1995-2006 wxWidgets team"),
2191                    wxPlatformInfo().GetPortIdName().c_str(),
2192                    wxMAJOR_VERSION,
2193                    wxMINOR_VERSION,
2194                    wxRELEASE_NUMBER,
2195 #if wxUSE_UNICODE
2196                    L" (Unicode)",
2197 #else
2198                    wxEmptyString,
2199 #endif
2200 #ifdef __WXDEBUG__
2201                    _T(" Debug build"),
2202 #else
2203                    wxEmptyString,
2204 #endif
2205                    __TDATE__,
2206                    __TTIME__,
2207 #ifdef __WXGTK__
2208                    wxString::Format(_T("\nagainst GTK+ %d.%d.%d. Runtime GTK+ version: %d.%d.%d"), GTK_MAJOR_VERSION, GTK_MINOR_VERSION, GTK_MICRO_VERSION, gtk_major_version, gtk_minor_version, gtk_micro_version).c_str()
2209 #else
2210                    wxEmptyString
2211 #endif
2212                    );
2213
2214         wxMessageBox(msg, _T("wxWidgets information"),
2215                      wxICON_INFORMATION | wxOK,
2216                      (wxWindow *)this);
2217     }
2218     else
2219 #endif // wxUSE_MSGDLG
2220     {
2221         event.Skip();
2222     }
2223 }
2224
2225 // ----------------------------------------------------------------------------
2226 // accessibility
2227 // ----------------------------------------------------------------------------
2228
2229 #if wxUSE_ACCESSIBILITY
2230 void wxWindowBase::SetAccessible(wxAccessible* accessible)
2231 {
2232     if (m_accessible && (accessible != m_accessible))
2233         delete m_accessible;
2234     m_accessible = accessible;
2235     if (m_accessible)
2236         m_accessible->SetWindow((wxWindow*) this);
2237 }
2238
2239 // Returns the accessible object, creating if necessary.
2240 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2241 {
2242     if (!m_accessible)
2243         m_accessible = CreateAccessible();
2244     return m_accessible;
2245 }
2246
2247 // Override to create a specific accessible object.
2248 wxAccessible* wxWindowBase::CreateAccessible()
2249 {
2250     return new wxWindowAccessible((wxWindow*) this);
2251 }
2252
2253 #endif
2254
2255 // ----------------------------------------------------------------------------
2256 // list classes implementation
2257 // ----------------------------------------------------------------------------
2258
2259 #if wxUSE_STL
2260
2261 #include "wx/listimpl.cpp"
2262 WX_DEFINE_LIST(wxWindowList)
2263
2264 #else
2265
2266 void wxWindowListNode::DeleteData()
2267 {
2268     delete (wxWindow *)GetData();
2269 }
2270
2271 #endif
2272
2273 // ----------------------------------------------------------------------------
2274 // borders
2275 // ----------------------------------------------------------------------------
2276
2277 wxBorder wxWindowBase::GetBorder(long flags) const
2278 {
2279     wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2280     if ( border == wxBORDER_DEFAULT )
2281     {
2282         border = GetDefaultBorder();
2283     }
2284
2285     return border;
2286 }
2287
2288 wxBorder wxWindowBase::GetDefaultBorder() const
2289 {
2290     return wxBORDER_NONE;
2291 }
2292
2293 // ----------------------------------------------------------------------------
2294 // hit testing
2295 // ----------------------------------------------------------------------------
2296
2297 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2298 {
2299     // here we just check if the point is inside the window or not
2300
2301     // check the top and left border first
2302     bool outside = x < 0 || y < 0;
2303     if ( !outside )
2304     {
2305         // check the right and bottom borders too
2306         wxSize size = GetSize();
2307         outside = x >= size.x || y >= size.y;
2308     }
2309
2310     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2311 }
2312
2313 // ----------------------------------------------------------------------------
2314 // mouse capture
2315 // ----------------------------------------------------------------------------
2316
2317 struct WXDLLEXPORT wxWindowNext
2318 {
2319     wxWindow *win;
2320     wxWindowNext *next;
2321 } *wxWindowBase::ms_winCaptureNext = NULL;
2322 wxWindow *wxWindowBase::ms_winCaptureCurrent = NULL;
2323 bool wxWindowBase::ms_winCaptureChanging = false;
2324
2325 void wxWindowBase::CaptureMouse()
2326 {
2327     wxLogTrace(_T("mousecapture"), _T("CaptureMouse(%p)"), wx_static_cast(void*, this));
2328
2329     wxASSERT_MSG( !ms_winCaptureChanging, _T("recursive CaptureMouse call?") );
2330
2331     ms_winCaptureChanging = true;
2332
2333     wxWindow *winOld = GetCapture();
2334     if ( winOld )
2335     {
2336         ((wxWindowBase*) winOld)->DoReleaseMouse();
2337
2338         // save it on stack
2339         wxWindowNext *item = new wxWindowNext;
2340         item->win = winOld;
2341         item->next = ms_winCaptureNext;
2342         ms_winCaptureNext = item;
2343     }
2344     //else: no mouse capture to save
2345
2346     DoCaptureMouse();
2347     ms_winCaptureCurrent = (wxWindow*)this;
2348
2349     ms_winCaptureChanging = false;
2350 }
2351
2352 void wxWindowBase::ReleaseMouse()
2353 {
2354     wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(%p)"), wx_static_cast(void*, this));
2355
2356     wxASSERT_MSG( !ms_winCaptureChanging, _T("recursive ReleaseMouse call?") );
2357
2358     wxASSERT_MSG( GetCapture() == this, wxT("attempt to release mouse, but this window hasn't captured it") );
2359
2360     ms_winCaptureChanging = true;
2361
2362     DoReleaseMouse();
2363     ms_winCaptureCurrent = NULL;
2364
2365     if ( ms_winCaptureNext )
2366     {
2367         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2368         ms_winCaptureCurrent = ms_winCaptureNext->win;
2369
2370         wxWindowNext *item = ms_winCaptureNext;
2371         ms_winCaptureNext = item->next;
2372         delete item;
2373     }
2374     //else: stack is empty, no previous capture
2375
2376     ms_winCaptureChanging = false;
2377
2378     wxLogTrace(_T("mousecapture"),
2379         (const wxChar *) _T("After ReleaseMouse() mouse is captured by %p"),
2380         wx_static_cast(void*, GetCapture()));
2381 }
2382
2383 static void DoNotifyWindowAboutCaptureLost(wxWindow *win)
2384 {
2385     wxMouseCaptureLostEvent event(win->GetId());
2386     event.SetEventObject(win);
2387     if ( !win->GetEventHandler()->ProcessEvent(event) )
2388     {
2389         wxFAIL_MSG( _T("window that captured the mouse didn't process wxEVT_MOUSE_CAPTURE_LOST") );
2390     }
2391 }
2392
2393 /* static */
2394 void wxWindowBase::NotifyCaptureLost()
2395 {
2396     // don't do anything if capture lost was expected, i.e. resulted from
2397     // a wx call to ReleaseMouse or CaptureMouse:
2398     if ( ms_winCaptureChanging )
2399         return;
2400
2401     // if the capture was lost unexpectedly, notify every window that has
2402     // capture (on stack or current) about it and clear the stack:
2403
2404     if ( ms_winCaptureCurrent )
2405     {
2406         DoNotifyWindowAboutCaptureLost(ms_winCaptureCurrent);
2407         ms_winCaptureCurrent = NULL;
2408     }
2409
2410     while ( ms_winCaptureNext )
2411     {
2412         wxWindowNext *item = ms_winCaptureNext;
2413         ms_winCaptureNext = item->next;
2414
2415         DoNotifyWindowAboutCaptureLost(item->win);
2416
2417         delete item;
2418     }
2419 }
2420
2421 #if wxUSE_HOTKEY
2422
2423 bool
2424 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2425                              int WXUNUSED(modifiers),
2426                              int WXUNUSED(keycode))
2427 {
2428     // not implemented
2429     return false;
2430 }
2431
2432 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2433 {
2434     // not implemented
2435     return false;
2436 }
2437
2438 #endif // wxUSE_HOTKEY
2439
2440 void wxWindowBase::SendDestroyEvent()
2441 {
2442     wxWindowDestroyEvent event;
2443     event.SetEventObject(this);
2444     event.SetId(GetId());
2445     GetEventHandler()->ProcessEvent(event);
2446 }
2447
2448 // ----------------------------------------------------------------------------
2449 // event processing
2450 // ----------------------------------------------------------------------------
2451
2452 bool wxWindowBase::TryValidator(wxEvent& wxVALIDATOR_PARAM(event))
2453 {
2454 #if wxUSE_VALIDATORS
2455     // Can only use the validator of the window which
2456     // is receiving the event
2457     if ( event.GetEventObject() == this )
2458     {
2459         wxValidator *validator = GetValidator();
2460         if ( validator && validator->ProcessEvent(event) )
2461         {
2462             return true;
2463         }
2464     }
2465 #endif // wxUSE_VALIDATORS
2466
2467     return false;
2468 }
2469
2470 bool wxWindowBase::TryParent(wxEvent& event)
2471 {
2472     // carry on up the parent-child hierarchy if the propagation count hasn't
2473     // reached zero yet
2474     if ( event.ShouldPropagate() )
2475     {
2476         // honour the requests to stop propagation at this window: this is
2477         // used by the dialogs, for example, to prevent processing the events
2478         // from the dialog controls in the parent frame which rarely, if ever,
2479         // makes sense
2480         if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
2481         {
2482             wxWindow *parent = GetParent();
2483             if ( parent && !parent->IsBeingDeleted() )
2484             {
2485                 wxPropagateOnce propagateOnce(event);
2486
2487                 return parent->GetEventHandler()->ProcessEvent(event);
2488             }
2489         }
2490     }
2491
2492     return wxEvtHandler::TryParent(event);
2493 }
2494
2495 // ----------------------------------------------------------------------------
2496 // keyboard navigation
2497 // ----------------------------------------------------------------------------
2498
2499 // Navigates in the specified direction.
2500 bool wxWindowBase::Navigate(int flags)
2501 {
2502     wxNavigationKeyEvent eventNav;
2503     eventNav.SetFlags(flags);
2504     eventNav.SetEventObject(this);
2505     if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
2506     {
2507         return true;
2508     }
2509     return false;
2510 }
2511
2512 void wxWindowBase::DoMoveInTabOrder(wxWindow *win, MoveKind move)
2513 {
2514     // check that we're not a top level window
2515     wxCHECK_RET( GetParent(),
2516                     _T("MoveBefore/AfterInTabOrder() don't work for TLWs!") );
2517
2518     // detect the special case when we have nothing to do anyhow and when the
2519     // code below wouldn't work
2520     if ( win == this )
2521         return;
2522
2523     // find the target window in the siblings list
2524     wxWindowList& siblings = GetParent()->GetChildren();
2525     wxWindowList::compatibility_iterator i = siblings.Find(win);
2526     wxCHECK_RET( i, _T("MoveBefore/AfterInTabOrder(): win is not a sibling") );
2527
2528     // unfortunately, when wxUSE_STL == 1 DetachNode() is not implemented so we
2529     // can't just move the node around
2530     wxWindow *self = (wxWindow *)this;
2531     siblings.DeleteObject(self);
2532     if ( move == MoveAfter )
2533     {
2534         i = i->GetNext();
2535     }
2536
2537     if ( i )
2538     {
2539         siblings.Insert(i, self);
2540     }
2541     else // MoveAfter and win was the last sibling
2542     {
2543         siblings.Append(self);
2544     }
2545 }
2546
2547 // ----------------------------------------------------------------------------
2548 // focus handling
2549 // ----------------------------------------------------------------------------
2550
2551 /*static*/ wxWindow* wxWindowBase::FindFocus()
2552 {
2553     wxWindowBase *win = DoFindFocus();
2554     return win ? win->GetMainWindowOfCompositeControl() : NULL;
2555 }
2556
2557 // ----------------------------------------------------------------------------
2558 // global functions
2559 // ----------------------------------------------------------------------------
2560
2561 wxWindow* wxGetTopLevelParent(wxWindow *win)
2562 {
2563     while ( win && !win->IsTopLevel() )
2564          win = win->GetParent();
2565
2566     return win;
2567 }
2568
2569 #if wxUSE_ACCESSIBILITY
2570 // ----------------------------------------------------------------------------
2571 // accessible object for windows
2572 // ----------------------------------------------------------------------------
2573
2574 // Can return either a child object, or an integer
2575 // representing the child element, starting from 1.
2576 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
2577 {
2578     wxASSERT( GetWindow() != NULL );
2579     if (!GetWindow())
2580         return wxACC_FAIL;
2581
2582     return wxACC_NOT_IMPLEMENTED;
2583 }
2584
2585 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
2586 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
2587 {
2588     wxASSERT( GetWindow() != NULL );
2589     if (!GetWindow())
2590         return wxACC_FAIL;
2591
2592     wxWindow* win = NULL;
2593     if (elementId == 0)
2594     {
2595         win = GetWindow();
2596     }
2597     else
2598     {
2599         if (elementId <= (int) GetWindow()->GetChildren().GetCount())
2600         {
2601             win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
2602         }
2603         else
2604             return wxACC_FAIL;
2605     }
2606     if (win)
2607     {
2608         rect = win->GetRect();
2609         if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
2610             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
2611         return wxACC_OK;
2612     }
2613
2614     return wxACC_NOT_IMPLEMENTED;
2615 }
2616
2617 // Navigates from fromId to toId/toObject.
2618 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
2619                              int* WXUNUSED(toId), wxAccessible** toObject)
2620 {
2621     wxASSERT( GetWindow() != NULL );
2622     if (!GetWindow())
2623         return wxACC_FAIL;
2624
2625     switch (navDir)
2626     {
2627     case wxNAVDIR_FIRSTCHILD:
2628         {
2629             if (GetWindow()->GetChildren().GetCount() == 0)
2630                 return wxACC_FALSE;
2631             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
2632             *toObject = childWindow->GetOrCreateAccessible();
2633
2634             return wxACC_OK;
2635         }
2636     case wxNAVDIR_LASTCHILD:
2637         {
2638             if (GetWindow()->GetChildren().GetCount() == 0)
2639                 return wxACC_FALSE;
2640             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
2641             *toObject = childWindow->GetOrCreateAccessible();
2642
2643             return wxACC_OK;
2644         }
2645     case wxNAVDIR_RIGHT:
2646     case wxNAVDIR_DOWN:
2647     case wxNAVDIR_NEXT:
2648         {
2649             wxWindowList::compatibility_iterator node =
2650                 wxWindowList::compatibility_iterator();
2651             if (fromId == 0)
2652             {
2653                 // Can't navigate to sibling of this window
2654                 // if we're a top-level window.
2655                 if (!GetWindow()->GetParent())
2656                     return wxACC_NOT_IMPLEMENTED;
2657
2658                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2659             }
2660             else
2661             {
2662                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2663                     node = GetWindow()->GetChildren().Item(fromId-1);
2664             }
2665
2666             if (node && node->GetNext())
2667             {
2668                 wxWindow* nextWindow = node->GetNext()->GetData();
2669                 *toObject = nextWindow->GetOrCreateAccessible();
2670                 return wxACC_OK;
2671             }
2672             else
2673                 return wxACC_FALSE;
2674         }
2675     case wxNAVDIR_LEFT:
2676     case wxNAVDIR_UP:
2677     case wxNAVDIR_PREVIOUS:
2678         {
2679             wxWindowList::compatibility_iterator node =
2680                 wxWindowList::compatibility_iterator();
2681             if (fromId == 0)
2682             {
2683                 // Can't navigate to sibling of this window
2684                 // if we're a top-level window.
2685                 if (!GetWindow()->GetParent())
2686                     return wxACC_NOT_IMPLEMENTED;
2687
2688                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2689             }
2690             else
2691             {
2692                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2693                     node = GetWindow()->GetChildren().Item(fromId-1);
2694             }
2695
2696             if (node && node->GetPrevious())
2697             {
2698                 wxWindow* previousWindow = node->GetPrevious()->GetData();
2699                 *toObject = previousWindow->GetOrCreateAccessible();
2700                 return wxACC_OK;
2701             }
2702             else
2703                 return wxACC_FALSE;
2704         }
2705     }
2706
2707     return wxACC_NOT_IMPLEMENTED;
2708 }
2709
2710 // Gets the name of the specified object.
2711 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
2712 {
2713     wxASSERT( GetWindow() != NULL );
2714     if (!GetWindow())
2715         return wxACC_FAIL;
2716
2717     wxString title;
2718
2719     // If a child, leave wxWidgets to call the function on the actual
2720     // child object.
2721     if (childId > 0)
2722         return wxACC_NOT_IMPLEMENTED;
2723
2724     // This will eventually be replaced by specialised
2725     // accessible classes, one for each kind of wxWidgets
2726     // control or window.
2727 #if wxUSE_BUTTON
2728     if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
2729         title = ((wxButton*) GetWindow())->GetLabel();
2730     else
2731 #endif
2732         title = GetWindow()->GetName();
2733
2734     if (!title.empty())
2735     {
2736         *name = title;
2737         return wxACC_OK;
2738     }
2739     else
2740         return wxACC_NOT_IMPLEMENTED;
2741 }
2742
2743 // Gets the number of children.
2744 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
2745 {
2746     wxASSERT( GetWindow() != NULL );
2747     if (!GetWindow())
2748         return wxACC_FAIL;
2749
2750     *childId = (int) GetWindow()->GetChildren().GetCount();
2751     return wxACC_OK;
2752 }
2753
2754 // Gets the specified child (starting from 1).
2755 // If *child is NULL and return value is wxACC_OK,
2756 // this means that the child is a simple element and
2757 // not an accessible object.
2758 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
2759 {
2760     wxASSERT( GetWindow() != NULL );
2761     if (!GetWindow())
2762         return wxACC_FAIL;
2763
2764     if (childId == 0)
2765     {
2766         *child = this;
2767         return wxACC_OK;
2768     }
2769
2770     if (childId > (int) GetWindow()->GetChildren().GetCount())
2771         return wxACC_FAIL;
2772
2773     wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
2774     *child = childWindow->GetOrCreateAccessible();
2775     if (*child)
2776         return wxACC_OK;
2777     else
2778         return wxACC_FAIL;
2779 }
2780
2781 // Gets the parent, or NULL.
2782 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
2783 {
2784     wxASSERT( GetWindow() != NULL );
2785     if (!GetWindow())
2786         return wxACC_FAIL;
2787
2788     wxWindow* parentWindow = GetWindow()->GetParent();
2789     if (!parentWindow)
2790     {
2791         *parent = NULL;
2792         return wxACC_OK;
2793     }
2794     else
2795     {
2796         *parent = parentWindow->GetOrCreateAccessible();
2797         if (*parent)
2798             return wxACC_OK;
2799         else
2800             return wxACC_FAIL;
2801     }
2802 }
2803
2804 // Performs the default action. childId is 0 (the action for this object)
2805 // or > 0 (the action for a child).
2806 // Return wxACC_NOT_SUPPORTED if there is no default action for this
2807 // window (e.g. an edit control).
2808 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
2809 {
2810     wxASSERT( GetWindow() != NULL );
2811     if (!GetWindow())
2812         return wxACC_FAIL;
2813
2814     return wxACC_NOT_IMPLEMENTED;
2815 }
2816
2817 // Gets the default action for this object (0) or > 0 (the action for a child).
2818 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
2819 // string if there is no action.
2820 // The retrieved string describes the action that is performed on an object,
2821 // not what the object does as a result. For example, a toolbar button that prints
2822 // a document has a default action of "Press" rather than "Prints the current document."
2823 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
2824 {
2825     wxASSERT( GetWindow() != NULL );
2826     if (!GetWindow())
2827         return wxACC_FAIL;
2828
2829     return wxACC_NOT_IMPLEMENTED;
2830 }
2831
2832 // Returns the description for this object or a child.
2833 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
2834 {
2835     wxASSERT( GetWindow() != NULL );
2836     if (!GetWindow())
2837         return wxACC_FAIL;
2838
2839     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
2840     if (!ht.empty())
2841     {
2842         *description = ht;
2843         return wxACC_OK;
2844     }
2845     return wxACC_NOT_IMPLEMENTED;
2846 }
2847
2848 // Returns help text for this object or a child, similar to tooltip text.
2849 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
2850 {
2851     wxASSERT( GetWindow() != NULL );
2852     if (!GetWindow())
2853         return wxACC_FAIL;
2854
2855     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
2856     if (!ht.empty())
2857     {
2858         *helpText = ht;
2859         return wxACC_OK;
2860     }
2861     return wxACC_NOT_IMPLEMENTED;
2862 }
2863
2864 // Returns the keyboard shortcut for this object or child.
2865 // Return e.g. ALT+K
2866 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
2867 {
2868     wxASSERT( GetWindow() != NULL );
2869     if (!GetWindow())
2870         return wxACC_FAIL;
2871
2872     return wxACC_NOT_IMPLEMENTED;
2873 }
2874
2875 // Returns a role constant.
2876 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
2877 {
2878     wxASSERT( GetWindow() != NULL );
2879     if (!GetWindow())
2880         return wxACC_FAIL;
2881
2882     // If a child, leave wxWidgets to call the function on the actual
2883     // child object.
2884     if (childId > 0)
2885         return wxACC_NOT_IMPLEMENTED;
2886
2887     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2888         return wxACC_NOT_IMPLEMENTED;
2889 #if wxUSE_STATUSBAR
2890     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2891         return wxACC_NOT_IMPLEMENTED;
2892 #endif
2893 #if wxUSE_TOOLBAR
2894     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2895         return wxACC_NOT_IMPLEMENTED;
2896 #endif
2897
2898     //*role = wxROLE_SYSTEM_CLIENT;
2899     *role = wxROLE_SYSTEM_CLIENT;
2900     return wxACC_OK;
2901
2902     #if 0
2903     return wxACC_NOT_IMPLEMENTED;
2904     #endif
2905 }
2906
2907 // Returns a state constant.
2908 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
2909 {
2910     wxASSERT( GetWindow() != NULL );
2911     if (!GetWindow())
2912         return wxACC_FAIL;
2913
2914     // If a child, leave wxWidgets to call the function on the actual
2915     // child object.
2916     if (childId > 0)
2917         return wxACC_NOT_IMPLEMENTED;
2918
2919     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2920         return wxACC_NOT_IMPLEMENTED;
2921
2922 #if wxUSE_STATUSBAR
2923     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2924         return wxACC_NOT_IMPLEMENTED;
2925 #endif
2926 #if wxUSE_TOOLBAR
2927     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2928         return wxACC_NOT_IMPLEMENTED;
2929 #endif
2930
2931     *state = 0;
2932     return wxACC_OK;
2933
2934     #if 0
2935     return wxACC_NOT_IMPLEMENTED;
2936     #endif
2937 }
2938
2939 // Returns a localized string representing the value for the object
2940 // or child.
2941 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
2942 {
2943     wxASSERT( GetWindow() != NULL );
2944     if (!GetWindow())
2945         return wxACC_FAIL;
2946
2947     return wxACC_NOT_IMPLEMENTED;
2948 }
2949
2950 // Selects the object or child.
2951 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
2952 {
2953     wxASSERT( GetWindow() != NULL );
2954     if (!GetWindow())
2955         return wxACC_FAIL;
2956
2957     return wxACC_NOT_IMPLEMENTED;
2958 }
2959
2960 // Gets the window with the keyboard focus.
2961 // If childId is 0 and child is NULL, no object in
2962 // this subhierarchy has the focus.
2963 // If this object has the focus, child should be 'this'.
2964 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
2965 {
2966     wxASSERT( GetWindow() != NULL );
2967     if (!GetWindow())
2968         return wxACC_FAIL;
2969
2970     return wxACC_NOT_IMPLEMENTED;
2971 }
2972
2973 // Gets a variant representing the selected children
2974 // of this object.
2975 // Acceptable values:
2976 // - a null variant (IsNull() returns true)
2977 // - a list variant (GetType() == wxT("list")
2978 // - an integer representing the selected child element,
2979 //   or 0 if this object is selected (GetType() == wxT("long")
2980 // - a "void*" pointer to a wxAccessible child object
2981 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
2982 {
2983     wxASSERT( GetWindow() != NULL );
2984     if (!GetWindow())
2985         return wxACC_FAIL;
2986
2987     return wxACC_NOT_IMPLEMENTED;
2988 }
2989
2990 #endif // wxUSE_ACCESSIBILITY
2991
2992 // ----------------------------------------------------------------------------
2993 // RTL support
2994 // ----------------------------------------------------------------------------
2995
2996 wxCoord
2997 wxWindowBase::AdjustForLayoutDirection(wxCoord x,
2998                                        wxCoord width,
2999                                        wxCoord widthTotal) const
3000 {
3001     if ( GetLayoutDirection() == wxLayout_RightToLeft )
3002     {
3003         x = widthTotal - x - width;
3004     }
3005
3006     return x;
3007 }
3008