src/common/wincmn.cpp

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