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/msgout.h"
  42     #include "wx/statusbr.h"
  43     #include "wx/toolbar.h"
  44     #include "wx/dcclient.h"
  45     #include "wx/scrolbar.h"
  46     #include "wx/layout.h"
  47     #include "wx/sizer.h"
  48     #include "wx/menu.h"
  49 #endif //WX_PRECOMP
  50
  51 #if wxUSE_DRAG_AND_DROP
  52     #include "wx/dnd.h"
  53 #endif // wxUSE_DRAG_AND_DROP
  54
  55 #if wxUSE_ACCESSIBILITY
  56     #include "wx/access.h"
  57 #endif
  58
  59 #if wxUSE_HELP
  60     #include "wx/cshelp.h"
  61 #endif // wxUSE_HELP
  62
  63 #if wxUSE_TOOLTIPS
  64     #include "wx/tooltip.h"
  65 #endif // wxUSE_TOOLTIPS
  66
  67 #if wxUSE_CARET
  68     #include "wx/caret.h"
  69 #endif // wxUSE_CARET
  70
  71 #if wxUSE_SYSTEM_OPTIONS
  72     #include "wx/sysopt.h"
  73 #endif
  74
  75 #include "wx/platinfo.h"
  76 #include "wx/private/window.h"
  77
  78 #ifdef __WXMSW__
  79     #include "wx/msw/wrapwin.h"
  80 #endif
  81
  82 // Windows List
  83 WXDLLIMPEXP_DATA_CORE(wxWindowList) wxTopLevelWindows;
  84
  85 // globals
  86 #if wxUSE_MENUS
  87 wxMenu *wxCurrentPopupMenu = NULL;
  88 #endif // wxUSE_MENUS
  89
  90 // ----------------------------------------------------------------------------
  91 // static data
  92 // ----------------------------------------------------------------------------
  93
  94
  95 IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
  96
  97 // ----------------------------------------------------------------------------
  98 // event table
  99 // ----------------------------------------------------------------------------
 100
 101 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
 102     EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
 103     EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
 104     EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
 105
 106 #if wxUSE_HELP
 107     EVT_HELP(wxID_ANY, wxWindowBase::OnHelp)
 108 #endif // wxUSE_HELP
 109
 110     EVT_SIZE(wxWindowBase::InternalOnSize)
 111 END_EVENT_TABLE()
 112
 113 // ============================================================================
 114 // implementation of the common functionality of the wxWindow class
 115 // ============================================================================
 116
 117 // ----------------------------------------------------------------------------
 118 // initialization
 119 // ----------------------------------------------------------------------------
 120
 121 // the default initialization
 122 wxWindowBase::wxWindowBase()
 123 {
 124     // no window yet, no parent nor children
 125     m_parent = NULL;
 126     m_windowId = wxID_ANY;
 127
 128     // no constraints on the minimal window size
 129     m_minWidth =
 130     m_maxWidth = wxDefaultCoord;
 131     m_minHeight =
 132     m_maxHeight = wxDefaultCoord;
 133
 134     // invalidiated cache value
 135     m_bestSizeCache = wxDefaultSize;
 136
 137     // window are created enabled and visible by default
 138     m_isShown =
 139     m_isEnabled = true;
 140
 141     // the default event handler is just this window
 142     m_eventHandler = this;
 143
 144 #if wxUSE_VALIDATORS
 145     // no validator
 146     m_windowValidator = NULL;
 147 #endif // wxUSE_VALIDATORS
 148
 149     // the colours/fonts are default for now, so leave m_font,
 150     // m_backgroundColour and m_foregroundColour uninitialized and set those
 151     m_hasBgCol =
 152     m_hasFgCol =
 153     m_hasFont = false;
 154     m_inheritBgCol =
 155     m_inheritFgCol =
 156     m_inheritFont = false;
 157
 158     // no style bits
 159     m_exStyle =
 160     m_windowStyle = 0;
 161
 162     m_backgroundStyle = wxBG_STYLE_ERASE;
 163
 164 #if wxUSE_CONSTRAINTS
 165     // no constraints whatsoever
 166     m_constraints = NULL;
 167     m_constraintsInvolvedIn = NULL;
 168 #endif // wxUSE_CONSTRAINTS
 169
 170     m_windowSizer = NULL;
 171     m_containingSizer = NULL;
 172     m_autoLayout = false;
 173
 174 #if wxUSE_DRAG_AND_DROP
 175     m_dropTarget = NULL;
 176 #endif // wxUSE_DRAG_AND_DROP
 177
 178 #if wxUSE_TOOLTIPS
 179     m_tooltip = NULL;
 180 #endif // wxUSE_TOOLTIPS
 181
 182 #if wxUSE_CARET
 183     m_caret = NULL;
 184 #endif // wxUSE_CARET
 185
 186 #if wxUSE_PALETTE
 187     m_hasCustomPalette = false;
 188 #endif // wxUSE_PALETTE
 189
 190 #if wxUSE_ACCESSIBILITY
 191     m_accessible = NULL;
 192 #endif
 193
 194     m_virtualSize = wxDefaultSize;
 195
 196     m_scrollHelper = NULL;
 197
 198     m_windowVariant = wxWINDOW_VARIANT_NORMAL;
 199 #if wxUSE_SYSTEM_OPTIONS
 200     if ( wxSystemOptions::HasOption(wxWINDOW_DEFAULT_VARIANT) )
 201     {
 202        m_windowVariant = (wxWindowVariant) wxSystemOptions::GetOptionInt( wxWINDOW_DEFAULT_VARIANT ) ;
 203     }
 204 #endif
 205
 206     // Whether we're using the current theme for this window (wxGTK only for now)
 207     m_themeEnabled = false;
 208
 209     // This is set to true by SendDestroyEvent() which should be called by the
 210     // most derived class to ensure that the destruction event is sent as soon
 211     // as possible to allow its handlers to still see the undestroyed window
 212     m_isBeingDeleted = false;
 213
 214     m_freezeCount = 0;
 215 }
 216
 217 // common part of window creation process
 218 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 219                               wxWindowID id,
 220                               const wxPoint& WXUNUSED(pos),
 221                               const wxSize& size,
 222                               long style,
 223                               const wxString& name)
 224 {
 225     // ids are limited to 16 bits under MSW so if you care about portability,
 226     // it's not a good idea to use ids out of this range (and negative ids are
 227     // reserved for wxWidgets own usage)
 228     wxASSERT_MSG( id == wxID_ANY || (id >= 0 && id < 32767) ||
 229                   (id >= wxID_AUTO_LOWEST && id <= wxID_AUTO_HIGHEST),
 230                   wxT("invalid id value") );
 231
 232     // generate a new id if the user doesn't care about it
 233     if ( id == wxID_ANY )
 234     {
 235         m_windowId = NewControlId();
 236     }
 237     else // valid id specified
 238     {
 239         m_windowId = id;
 240     }
 241
 242     // don't use SetWindowStyleFlag() here, this function should only be called
 243     // to change the flag after creation as it tries to reflect the changes in
 244     // flags by updating the window dynamically and we don't need this here
 245     m_windowStyle = style;
 246
 247     // assume the user doesn't want this window to shrink beneath its initial
 248     // size, this worked like this in wxWidgets 2.8 and before and generally
 249     // often makes sense for child windows (for top level ones it definitely
 250     // does not as the user should be able to resize the window)
 251     //
 252     // note that we can't use IsTopLevel() from ctor
 253     if ( size != wxDefaultSize && !wxTopLevelWindows.Find((wxWindow *)this) )
 254         SetMinSize(size);
 255
 256     SetName(name);
 257     SetParent(parent);
 258
 259     return true;
 260 }
 261
 262 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 263                               wxWindowID id,
 264                               const wxPoint& pos,
 265                               const wxSize& size,
 266                               long style,
 267                               const wxValidator& wxVALIDATOR_PARAM(validator),
 268                               const wxString& name)
 269 {
 270     if ( !CreateBase(parent, id, pos, size, style, name) )
 271         return false;
 272
 273 #if wxUSE_VALIDATORS
 274     SetValidator(validator);
 275 #endif // wxUSE_VALIDATORS
 276
 277     // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
 278     // have it too - like this it's possible to set it only in the top level
 279     // dialog/frame and all children will inherit it by defult
 280     if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
 281     {
 282         SetExtraStyle(GetExtraStyle() | wxWS_EX_VALIDATE_RECURSIVELY);
 283     }
 284
 285     return true;
 286 }
 287
 288 bool wxWindowBase::ToggleWindowStyle(int flag)
 289 {
 290     wxASSERT_MSG( flag, wxT("flags with 0 value can't be toggled") );
 291
 292     bool rc;
 293     long style = GetWindowStyleFlag();
 294     if ( style & flag )
 295     {
 296         style &= ~flag;
 297         rc = false;
 298     }
 299     else // currently off
 300     {
 301         style |= flag;
 302         rc = true;
 303     }
 304
 305     SetWindowStyleFlag(style);
 306
 307     return rc;
 308 }
 309
 310 // ----------------------------------------------------------------------------
 311 // destruction
 312 // ----------------------------------------------------------------------------
 313
 314 // common clean up
 315 wxWindowBase::~wxWindowBase()
 316 {
 317     wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
 318
 319     // FIXME if these 2 cases result from programming errors in the user code
 320     //       we should probably assert here instead of silently fixing them
 321
 322     // Just in case the window has been Closed, but we're then deleting
 323     // immediately: don't leave dangling pointers.
 324     wxPendingDelete.DeleteObject(this);
 325
 326     // Just in case we've loaded a top-level window via LoadNativeDialog but
 327     // we weren't a dialog class
 328     wxTopLevelWindows.DeleteObject((wxWindow*)this);
 329
 330     // Any additional event handlers should be popped before the window is
 331     // deleted as otherwise the last handler will be left with a dangling
 332     // pointer to this window result in a difficult to diagnose crash later on.
 333     wxASSERT_MSG( GetEventHandler() == this,
 334                     wxT("any pushed event handlers must have been removed") );
 335
 336 #if wxUSE_MENUS
 337     // The associated popup menu can still be alive, disassociate from it in
 338     // this case
 339     if ( wxCurrentPopupMenu && wxCurrentPopupMenu->GetInvokingWindow() == this )
 340         wxCurrentPopupMenu->SetInvokingWindow(NULL);
 341 #endif // wxUSE_MENUS
 342
 343     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 344
 345     // notify the parent about this window destruction
 346     if ( m_parent )
 347         m_parent->RemoveChild(this);
 348
 349 #if wxUSE_CARET
 350     delete m_caret;
 351 #endif // wxUSE_CARET
 352
 353 #if wxUSE_VALIDATORS
 354     delete m_windowValidator;
 355 #endif // wxUSE_VALIDATORS
 356
 357 #if wxUSE_CONSTRAINTS
 358     // Have to delete constraints/sizer FIRST otherwise sizers may try to look
 359     // at deleted windows as they delete themselves.
 360     DeleteRelatedConstraints();
 361
 362     if ( m_constraints )
 363     {
 364         // This removes any dangling pointers to this window in other windows'
 365         // constraintsInvolvedIn lists.
 366         UnsetConstraints(m_constraints);
 367         wxDELETE(m_constraints);
 368     }
 369 #endif // wxUSE_CONSTRAINTS
 370
 371     if ( m_containingSizer )
 372         m_containingSizer->Detach( (wxWindow*)this );
 373
 374     delete m_windowSizer;
 375
 376 #if wxUSE_DRAG_AND_DROP
 377     delete m_dropTarget;
 378 #endif // wxUSE_DRAG_AND_DROP
 379
 380 #if wxUSE_TOOLTIPS
 381     delete m_tooltip;
 382 #endif // wxUSE_TOOLTIPS
 383
 384 #if wxUSE_ACCESSIBILITY
 385     delete m_accessible;
 386 #endif
 387
 388 #if wxUSE_HELP
 389     // NB: this has to be called unconditionally, because we don't know
 390     //     whether this window has associated help text or not
 391     wxHelpProvider *helpProvider = wxHelpProvider::Get();
 392     if ( helpProvider )
 393         helpProvider->RemoveHelp(this);
 394 #endif
 395 }
 396
 397 bool wxWindowBase::IsBeingDeleted() const
 398 {
 399     return m_isBeingDeleted ||
 400             (!IsTopLevel() && m_parent && m_parent->IsBeingDeleted());
 401 }
 402
 403 void wxWindowBase::SendDestroyEvent()
 404 {
 405     if ( m_isBeingDeleted )
 406     {
 407         // we could have been already called from a more derived class dtor,
 408         // e.g. ~wxTLW calls us and so does ~wxWindow and the latter call
 409         // should be simply ignored
 410         return;
 411     }
 412
 413     m_isBeingDeleted = true;
 414
 415     wxWindowDestroyEvent event;
 416     event.SetEventObject(this);
 417     event.SetId(GetId());
 418     GetEventHandler()->ProcessEvent(event);
 419 }
 420
 421 bool wxWindowBase::Destroy()
 422 {
 423     SendDestroyEvent();
 424
 425     delete this;
 426
 427     return true;
 428 }
 429
 430 bool wxWindowBase::Close(bool force)
 431 {
 432     wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
 433     event.SetEventObject(this);
 434     event.SetCanVeto(!force);
 435
 436     // return false if window wasn't closed because the application vetoed the
 437     // close event
 438     return HandleWindowEvent(event) && !event.GetVeto();
 439 }
 440
 441 bool wxWindowBase::DestroyChildren()
 442 {
 443     wxWindowList::compatibility_iterator node;
 444     for ( ;; )
 445     {
 446         // we iterate until the list becomes empty
 447         node = GetChildren().GetFirst();
 448         if ( !node )
 449             break;
 450
 451         wxWindow *child = node->GetData();
 452
 453         // note that we really want to delete it immediately so don't call the
 454         // possible overridden Destroy() version which might not delete the
 455         // child immediately resulting in problems with our (top level) child
 456         // outliving its parent
 457         child->wxWindowBase::Destroy();
 458
 459         wxASSERT_MSG( !GetChildren().Find(child),
 460                       wxT("child didn't remove itself using RemoveChild()") );
 461     }
 462
 463     return true;
 464 }
 465
 466 // ----------------------------------------------------------------------------
 467 // size/position related methods
 468 // ----------------------------------------------------------------------------
 469
 470 // centre the window with respect to its parent in either (or both) directions
 471 void wxWindowBase::DoCentre(int dir)
 472 {
 473     wxCHECK_RET( !(dir & wxCENTRE_ON_SCREEN) && GetParent(),
 474                  wxT("this method only implements centering child windows") );
 475
 476     SetSize(GetRect().CentreIn(GetParent()->GetClientSize(), dir));
 477 }
 478
 479 // fits the window around the children
 480 void wxWindowBase::Fit()
 481 {
 482     if ( !GetChildren().empty() )
 483     {
 484         SetSize(GetBestSize());
 485     }
 486     //else: do nothing if we have no children
 487 }
 488
 489 // fits virtual size (ie. scrolled area etc.) around children
 490 void wxWindowBase::FitInside()
 491 {
 492     if ( GetChildren().GetCount() > 0 )
 493     {
 494         SetVirtualSize( GetBestVirtualSize() );
 495     }
 496 }
 497
 498 // On Mac, scrollbars are explicitly children.
 499 #if defined( __WXMAC__ ) && !defined(__WXUNIVERSAL__)
 500 static bool wxHasRealChildren(const wxWindowBase* win)
 501 {
 502     int realChildCount = 0;
 503
 504     for ( wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
 505           node;
 506           node = node->GetNext() )
 507     {
 508         wxWindow *win = node->GetData();
 509         if ( !win->IsTopLevel() && win->IsShown()
 510 #if wxUSE_SCROLLBAR
 511             && !win->IsKindOf(CLASSINFO(wxScrollBar))
 512 #endif
 513             )
 514             realChildCount ++;
 515     }
 516     return (realChildCount > 0);
 517 }
 518 #endif
 519
 520 void wxWindowBase::InvalidateBestSize()
 521 {
 522     m_bestSizeCache = wxDefaultSize;
 523
 524     // parent's best size calculation may depend on its children's
 525     // as long as child window we are in is not top level window itself
 526     // (because the TLW size is never resized automatically)
 527     // so let's invalidate it as well to be safe:
 528     if (m_parent && !IsTopLevel())
 529         m_parent->InvalidateBestSize();
 530 }
 531
 532 // return the size best suited for the current window
 533 wxSize wxWindowBase::DoGetBestSize() const
 534 {
 535     wxSize best;
 536
 537     if ( m_windowSizer )
 538     {
 539         best = m_windowSizer->GetMinSize();
 540     }
 541 #if wxUSE_CONSTRAINTS
 542     else if ( m_constraints )
 543     {
 544         wxConstCast(this, wxWindowBase)->SatisfyConstraints();
 545
 546         // our minimal acceptable size is such that all our windows fit inside
 547         int maxX = 0,
 548             maxY = 0;
 549
 550         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 551               node;
 552               node = node->GetNext() )
 553         {
 554             wxLayoutConstraints *c = node->GetData()->GetConstraints();
 555             if ( !c )
 556             {
 557                 // it's not normal that we have an unconstrained child, but
 558                 // what can we do about it?
 559                 continue;
 560             }
 561
 562             int x = c->right.GetValue(),
 563                 y = c->bottom.GetValue();
 564
 565             if ( x > maxX )
 566                 maxX = x;
 567
 568             if ( y > maxY )
 569                 maxY = y;
 570
 571             // TODO: we must calculate the overlaps somehow, otherwise we
 572             //       will never return a size bigger than the current one :-(
 573         }
 574
 575         best = wxSize(maxX, maxY);
 576     }
 577 #endif // wxUSE_CONSTRAINTS
 578     else if ( !GetChildren().empty()
 579 #if defined( __WXMAC__ ) && !defined(__WXUNIVERSAL__)
 580               && wxHasRealChildren(this)
 581 #endif
 582               )
 583     {
 584         // our minimal acceptable size is such that all our visible child
 585         // windows fit inside
 586         int maxX = 0,
 587             maxY = 0;
 588
 589         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 590               node;
 591               node = node->GetNext() )
 592         {
 593             wxWindow *win = node->GetData();
 594             if ( win->IsTopLevel()
 595                     || !win->IsShown()
 596 #if wxUSE_STATUSBAR
 597                         || wxDynamicCast(win, wxStatusBar)
 598 #endif // wxUSE_STATUSBAR
 599                )
 600             {
 601                 // dialogs and frames lie in different top level windows -
 602                 // don't deal with them here; as for the status bars, they
 603                 // don't lie in the client area at all
 604                 continue;
 605             }
 606
 607             int wx, wy, ww, wh;
 608             win->GetPosition(&wx, &wy);
 609
 610             // if the window hadn't been positioned yet, assume that it is in
 611             // the origin
 612             if ( wx == wxDefaultCoord )
 613                 wx = 0;
 614             if ( wy == wxDefaultCoord )
 615                 wy = 0;
 616
 617             win->GetSize(&ww, &wh);
 618             if ( wx + ww > maxX )
 619                 maxX = wx + ww;
 620             if ( wy + wh > maxY )
 621                 maxY = wy + wh;
 622         }
 623
 624         best = wxSize(maxX, maxY);
 625     }
 626     else // ! has children
 627     {
 628         wxSize size = GetMinSize();
 629         if ( !size.IsFullySpecified() )
 630         {
 631             // if the window doesn't define its best size we assume that it can
 632             // be arbitrarily small -- usually this is not the case, of course,
 633             // but we have no way to know what the limit is, it should really
 634             // override DoGetBestClientSize() itself to tell us
 635             size.SetDefaults(wxSize(1, 1));
 636         }
 637
 638         // return as-is, unadjusted by the client size difference.
 639         return size;
 640     }
 641
 642     // Add any difference between size and client size
 643     wxSize diff = GetSize() - GetClientSize();
 644     best.x += wxMax(0, diff.x);
 645     best.y += wxMax(0, diff.y);
 646
 647     return best;
 648 }
 649
 650 // helper of GetWindowBorderSize(): as many ports don't implement support for
 651 // wxSYS_BORDER/EDGE_X/Y metrics in their wxSystemSettings, use hard coded
 652 // fallbacks in this case
 653 static int wxGetMetricOrDefault(wxSystemMetric what, const wxWindowBase* win)
 654 {
 655     int rc = wxSystemSettings::GetMetric(
 656         what, static_cast<wxWindow*>(const_cast<wxWindowBase*>(win)));
 657     if ( rc == -1 )
 658     {
 659         switch ( what )
 660         {
 661             case wxSYS_BORDER_X:
 662             case wxSYS_BORDER_Y:
 663                 // 2D border is by default 1 pixel wide
 664                 rc = 1;
 665                 break;
 666
 667             case wxSYS_EDGE_X:
 668             case wxSYS_EDGE_Y:
 669                 // 3D borders are by default 2 pixels
 670                 rc = 2;
 671                 break;
 672
 673             default:
 674                 wxFAIL_MSG( wxT("unexpected wxGetMetricOrDefault() argument") );
 675                 rc = 0;
 676         }
 677     }
 678
 679     return rc;
 680 }
 681
 682 wxSize wxWindowBase::GetWindowBorderSize() const
 683 {
 684     wxSize size;
 685
 686     switch ( GetBorder() )
 687     {
 688         case wxBORDER_NONE:
 689             // nothing to do, size is already (0, 0)
 690             break;
 691
 692         case wxBORDER_SIMPLE:
 693         case wxBORDER_STATIC:
 694             size.x = wxGetMetricOrDefault(wxSYS_BORDER_X, this);
 695             size.y = wxGetMetricOrDefault(wxSYS_BORDER_Y, this);
 696             break;
 697
 698         case wxBORDER_SUNKEN:
 699         case wxBORDER_RAISED:
 700             size.x = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_X, this),
 701                            wxGetMetricOrDefault(wxSYS_BORDER_X, this));
 702             size.y = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_Y, this),
 703                            wxGetMetricOrDefault(wxSYS_BORDER_Y, this));
 704             break;
 705
 706         case wxBORDER_DOUBLE:
 707             size.x = wxGetMetricOrDefault(wxSYS_EDGE_X, this) +
 708                         wxGetMetricOrDefault(wxSYS_BORDER_X, this);
 709             size.y = wxGetMetricOrDefault(wxSYS_EDGE_Y, this) +
 710                         wxGetMetricOrDefault(wxSYS_BORDER_Y, this);
 711             break;
 712
 713         default:
 714             wxFAIL_MSG(wxT("Unknown border style."));
 715             break;
 716     }
 717
 718     // we have borders on both sides
 719     return size*2;
 720 }
 721
 722 wxSize wxWindowBase::GetEffectiveMinSize() const
 723 {
 724     // merge the best size with the min size, giving priority to the min size
 725     wxSize min = GetMinSize();
 726
 727     if (min.x == wxDefaultCoord || min.y == wxDefaultCoord)
 728     {
 729         wxSize best = GetBestSize();
 730         if (min.x == wxDefaultCoord) min.x =  best.x;
 731         if (min.y == wxDefaultCoord) min.y =  best.y;
 732     }
 733
 734     return min;
 735 }
 736
 737 wxSize wxWindowBase::DoGetBorderSize() const
 738 {
 739     // there is one case in which we can implement it for all ports easily
 740     if ( GetBorder() == wxBORDER_NONE )
 741         return wxSize(0, 0);
 742
 743     // otherwise use the difference between the real size and the client size
 744     // as a fallback: notice that this is incorrect in general as client size
 745     // also doesn't take the scrollbars into account
 746     return GetSize() - GetClientSize();
 747 }
 748
 749 wxSize wxWindowBase::GetBestSize() const
 750 {
 751     if ( !m_windowSizer && m_bestSizeCache.IsFullySpecified() )
 752         return m_bestSizeCache;
 753
 754     // call DoGetBestClientSize() first, if a derived class overrides it wants
 755     // it to be used
 756     wxSize size = DoGetBestClientSize();
 757     if ( size != wxDefaultSize )
 758     {
 759         size += DoGetBorderSize();
 760
 761         CacheBestSize(size);
 762         return size;
 763     }
 764
 765     return DoGetBestSize();
 766 }
 767
 768 void wxWindowBase::SetMinSize(const wxSize& minSize)
 769 {
 770     m_minWidth = minSize.x;
 771     m_minHeight = minSize.y;
 772 }
 773
 774 void wxWindowBase::SetMaxSize(const wxSize& maxSize)
 775 {
 776     m_maxWidth = maxSize.x;
 777     m_maxHeight = maxSize.y;
 778 }
 779
 780 void wxWindowBase::SetInitialSize(const wxSize& size)
 781 {
 782     // Set the min size to the size passed in.  This will usually either be
 783     // wxDefaultSize or the size passed to this window's ctor/Create function.
 784     SetMinSize(size);
 785
 786     // Merge the size with the best size if needed
 787     wxSize best = GetEffectiveMinSize();
 788
 789     // If the current size doesn't match then change it
 790     if (GetSize() != best)
 791         SetSize(best);
 792 }
 793
 794
 795 // by default the origin is not shifted
 796 wxPoint wxWindowBase::GetClientAreaOrigin() const
 797 {
 798     return wxPoint(0,0);
 799 }
 800
 801 wxSize wxWindowBase::ClientToWindowSize(const wxSize& size) const
 802 {
 803     const wxSize diff(GetSize() - GetClientSize());
 804
 805     return wxSize(size.x == -1 ? -1 : size.x + diff.x,
 806                   size.y == -1 ? -1 : size.y + diff.y);
 807 }
 808
 809 wxSize wxWindowBase::WindowToClientSize(const wxSize& size) const
 810 {
 811     const wxSize diff(GetSize() - GetClientSize());
 812
 813     return wxSize(size.x == -1 ? -1 : size.x - diff.x,
 814                   size.y == -1 ? -1 : size.y - diff.y);
 815 }
 816
 817 void wxWindowBase::SetWindowVariant( wxWindowVariant variant )
 818 {
 819     if ( m_windowVariant != variant )
 820     {
 821         m_windowVariant = variant;
 822
 823         DoSetWindowVariant(variant);
 824     }
 825 }
 826
 827 void wxWindowBase::DoSetWindowVariant( wxWindowVariant variant )
 828 {
 829     // adjust the font height to correspond to our new variant (notice that
 830     // we're only called if something really changed)
 831     wxFont font = GetFont();
 832     int size = font.GetPointSize();
 833     switch ( variant )
 834     {
 835         case wxWINDOW_VARIANT_NORMAL:
 836             break;
 837
 838         case wxWINDOW_VARIANT_SMALL:
 839             size *= 3;
 840             size /= 4;
 841             break;
 842
 843         case wxWINDOW_VARIANT_MINI:
 844             size *= 2;
 845             size /= 3;
 846             break;
 847
 848         case wxWINDOW_VARIANT_LARGE:
 849             size *= 5;
 850             size /= 4;
 851             break;
 852
 853         default:
 854             wxFAIL_MSG(wxT("unexpected window variant"));
 855             break;
 856     }
 857
 858     font.SetPointSize(size);
 859     SetFont(font);
 860 }
 861
 862 void wxWindowBase::DoSetSizeHints( int minW, int minH,
 863                                    int maxW, int maxH,
 864                                    int WXUNUSED(incW), int WXUNUSED(incH) )
 865 {
 866     wxCHECK_RET( (minW == wxDefaultCoord || maxW == wxDefaultCoord || minW <= maxW) &&
 867                     (minH == wxDefaultCoord || maxH == wxDefaultCoord || minH <= maxH),
 868                  wxT("min width/height must be less than max width/height!") );
 869
 870     m_minWidth = minW;
 871     m_maxWidth = maxW;
 872     m_minHeight = minH;
 873     m_maxHeight = maxH;
 874 }
 875
 876
 877 #if WXWIN_COMPATIBILITY_2_8
 878 void wxWindowBase::SetVirtualSizeHints(int WXUNUSED(minW), int WXUNUSED(minH),
 879                                        int WXUNUSED(maxW), int WXUNUSED(maxH))
 880 {
 881 }
 882
 883 void wxWindowBase::SetVirtualSizeHints(const wxSize& WXUNUSED(minsize),
 884                                        const wxSize& WXUNUSED(maxsize))
 885 {
 886 }
 887 #endif // WXWIN_COMPATIBILITY_2_8
 888
 889 void wxWindowBase::DoSetVirtualSize( int x, int y )
 890 {
 891     m_virtualSize = wxSize(x, y);
 892 }
 893
 894 wxSize wxWindowBase::DoGetVirtualSize() const
 895 {
 896     // we should use the entire client area so if it is greater than our
 897     // virtual size, expand it to fit (otherwise if the window is big enough we
 898     // wouldn't be using parts of it)
 899     wxSize size = GetClientSize();
 900     if ( m_virtualSize.x > size.x )
 901         size.x = m_virtualSize.x;
 902
 903     if ( m_virtualSize.y >= size.y )
 904         size.y = m_virtualSize.y;
 905
 906     return size;
 907 }
 908
 909 void wxWindowBase::DoGetScreenPosition(int *x, int *y) const
 910 {
 911     // screen position is the same as (0, 0) in client coords for non TLWs (and
 912     // TLWs override this method)
 913     if ( x )
 914         *x = 0;
 915     if ( y )
 916         *y = 0;
 917
 918     ClientToScreen(x, y);
 919 }
 920
 921 void wxWindowBase::SendSizeEvent(int flags)
 922 {
 923     wxSizeEvent event(GetSize(), GetId());
 924     event.SetEventObject(this);
 925     if ( flags & wxSEND_EVENT_POST )
 926         wxPostEvent(this, event);
 927     else
 928         HandleWindowEvent(event);
 929 }
 930
 931 void wxWindowBase::SendSizeEventToParent(int flags)
 932 {
 933     wxWindow * const parent = GetParent();
 934     if ( parent && !parent->IsBeingDeleted() )
 935         parent->SendSizeEvent(flags);
 936 }
 937
 938 bool wxWindowBase::HasScrollbar(int orient) const
 939 {
 940     // if scrolling in the given direction is disabled, we can't have the
 941     // corresponding scrollbar no matter what
 942     if ( !CanScroll(orient) )
 943         return false;
 944
 945     const wxSize sizeVirt = GetVirtualSize();
 946     const wxSize sizeClient = GetClientSize();
 947
 948     return orient == wxHORIZONTAL ? sizeVirt.x > sizeClient.x
 949                                   : sizeVirt.y > sizeClient.y;
 950 }
 951
 952 // ----------------------------------------------------------------------------
 953 // show/hide/enable/disable the window
 954 // ----------------------------------------------------------------------------
 955
 956 bool wxWindowBase::Show(bool show)
 957 {
 958     if ( show != m_isShown )
 959     {
 960         m_isShown = show;
 961
 962         return true;
 963     }
 964     else
 965     {
 966         return false;
 967     }
 968 }
 969
 970 bool wxWindowBase::IsEnabled() const
 971 {
 972     return IsThisEnabled() && (IsTopLevel() || !GetParent() || GetParent()->IsEnabled());
 973 }
 974
 975 void wxWindowBase::NotifyWindowOnEnableChange(bool enabled)
 976 {
 977 #ifndef wxHAS_NATIVE_ENABLED_MANAGEMENT
 978     DoEnable(enabled);
 979 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 980
 981     OnEnabled(enabled);
 982
 983     // If we are top-level then the logic doesn't apply - otherwise
 984     // showing a modal dialog would result in total greying out (and ungreying
 985     // out later) of everything which would be really ugly
 986     if ( IsTopLevel() )
 987         return;
 988
 989     for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 990           node;
 991           node = node->GetNext() )
 992     {
 993         wxWindowBase * const child = node->GetData();
 994         if ( !child->IsTopLevel() && child->IsThisEnabled() )
 995             child->NotifyWindowOnEnableChange(enabled);
 996     }
 997 }
 998
 999 bool wxWindowBase::Enable(bool enable)
1000 {
1001     if ( enable == IsThisEnabled() )
1002         return false;
1003
1004     m_isEnabled = enable;
1005
1006 #ifdef wxHAS_NATIVE_ENABLED_MANAGEMENT
1007     DoEnable(enable);
1008 #else // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
1009     wxWindowBase * const parent = GetParent();
1010     if( !IsTopLevel() && parent && !parent->IsEnabled() )
1011     {
1012         return true;
1013     }
1014 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
1015
1016     NotifyWindowOnEnableChange(enable);
1017
1018     return true;
1019 }
1020
1021 bool wxWindowBase::IsShownOnScreen() const
1022 {
1023     // A window is shown on screen if it itself is shown and so are all its
1024     // parents. But if a window is toplevel one, then its always visible on
1025     // screen if IsShown() returns true, even if it has a hidden parent.
1026     return IsShown() &&
1027            (IsTopLevel() || GetParent() == NULL || GetParent()->IsShownOnScreen());
1028 }
1029
1030 // ----------------------------------------------------------------------------
1031 // RTTI
1032 // ----------------------------------------------------------------------------
1033
1034 bool wxWindowBase::IsTopLevel() const
1035 {
1036     return false;
1037 }
1038
1039 // ----------------------------------------------------------------------------
1040 // Freeze/Thaw
1041 // ----------------------------------------------------------------------------
1042
1043 void wxWindowBase::Freeze()
1044 {
1045     if ( !m_freezeCount++ )
1046     {
1047         // physically freeze this window:
1048         DoFreeze();
1049
1050         // and recursively freeze all children:
1051         for ( wxWindowList::iterator i = GetChildren().begin();
1052               i != GetChildren().end(); ++i )
1053         {
1054             wxWindow *child = *i;
1055             if ( child->IsTopLevel() )
1056                 continue;
1057
1058             child->Freeze();
1059         }
1060     }
1061 }
1062
1063 void wxWindowBase::Thaw()
1064 {
1065     wxASSERT_MSG( m_freezeCount, "Thaw() without matching Freeze()" );
1066
1067     if ( !--m_freezeCount )
1068     {
1069         // recursively thaw all children:
1070         for ( wxWindowList::iterator i = GetChildren().begin();
1071               i != GetChildren().end(); ++i )
1072         {
1073             wxWindow *child = *i;
1074             if ( child->IsTopLevel() )
1075                 continue;
1076
1077             child->Thaw();
1078         }
1079
1080         // physically thaw this window:
1081         DoThaw();
1082     }
1083 }
1084
1085 // ----------------------------------------------------------------------------
1086 // reparenting the window
1087 // ----------------------------------------------------------------------------
1088
1089 void wxWindowBase::AddChild(wxWindowBase *child)
1090 {
1091     wxCHECK_RET( child, wxT("can't add a NULL child") );
1092
1093     // this should never happen and it will lead to a crash later if it does
1094     // because RemoveChild() will remove only one node from the children list
1095     // and the other(s) one(s) will be left with dangling pointers in them
1096     wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), wxT("AddChild() called twice") );
1097
1098     GetChildren().Append((wxWindow*)child);
1099     child->SetParent(this);
1100
1101     // adding a child while frozen will assert when thawed, so freeze it as if
1102     // it had been already present when we were frozen
1103     if ( IsFrozen() && !child->IsTopLevel() )
1104         child->Freeze();
1105 }
1106
1107 void wxWindowBase::RemoveChild(wxWindowBase *child)
1108 {
1109     wxCHECK_RET( child, wxT("can't remove a NULL child") );
1110
1111     // removing a child while frozen may result in permanently frozen window
1112     // if used e.g. from Reparent(), so thaw it
1113     //
1114     // NB: IsTopLevel() doesn't return true any more when a TLW child is being
1115     //     removed from its ~wxWindowBase, so check for IsBeingDeleted() too
1116     if ( IsFrozen() && !child->IsBeingDeleted() && !child->IsTopLevel() )
1117         child->Thaw();
1118
1119     GetChildren().DeleteObject((wxWindow *)child);
1120     child->SetParent(NULL);
1121 }
1122
1123 bool wxWindowBase::Reparent(wxWindowBase *newParent)
1124 {
1125     wxWindow *oldParent = GetParent();
1126     if ( newParent == oldParent )
1127     {
1128         // nothing done
1129         return false;
1130     }
1131
1132     const bool oldEnabledState = IsEnabled();
1133
1134     // unlink this window from the existing parent.
1135     if ( oldParent )
1136     {
1137         oldParent->RemoveChild(this);
1138     }
1139     else
1140     {
1141         wxTopLevelWindows.DeleteObject((wxWindow *)this);
1142     }
1143
1144     // add it to the new one
1145     if ( newParent )
1146     {
1147         newParent->AddChild(this);
1148     }
1149     else
1150     {
1151         wxTopLevelWindows.Append((wxWindow *)this);
1152     }
1153
1154     // We need to notify window (and its subwindows) if by changing the parent
1155     // we also change our enabled/disabled status.
1156     const bool newEnabledState = IsEnabled();
1157     if ( newEnabledState != oldEnabledState )
1158     {
1159         NotifyWindowOnEnableChange(newEnabledState);
1160     }
1161
1162     return true;
1163 }
1164
1165 // ----------------------------------------------------------------------------
1166 // event handler stuff
1167 // ----------------------------------------------------------------------------
1168
1169 void wxWindowBase::SetEventHandler(wxEvtHandler *handler)
1170 {
1171     wxCHECK_RET(handler != NULL, "SetEventHandler(NULL) called");
1172
1173     m_eventHandler = handler;
1174 }
1175
1176 void wxWindowBase::SetNextHandler(wxEvtHandler *WXUNUSED(handler))
1177 {
1178     // disable wxEvtHandler chain mechanism for wxWindows:
1179     // wxWindow uses its own stack mechanism which doesn't mix well with wxEvtHandler's one
1180
1181     wxFAIL_MSG("wxWindow cannot be part of a wxEvtHandler chain");
1182 }
1183 void wxWindowBase::SetPreviousHandler(wxEvtHandler *WXUNUSED(handler))
1184 {
1185     // we can't simply wxFAIL here as in SetNextHandler: in fact the last
1186     // handler of our stack when is destroyed will be Unlink()ed and thus
1187     // will call this function to update the pointer of this window...
1188
1189     //wxFAIL_MSG("wxWindow cannot be part of a wxEvtHandler chain");
1190 }
1191
1192 void wxWindowBase::PushEventHandler(wxEvtHandler *handlerToPush)
1193 {
1194     wxCHECK_RET( handlerToPush != NULL, "PushEventHandler(NULL) called" );
1195
1196     // the new handler is going to be part of the wxWindow stack of event handlers:
1197     // it can't be part also of an event handler double-linked chain:
1198     wxASSERT_MSG(handlerToPush->IsUnlinked(),
1199         "The handler being pushed in the wxWindow stack shouldn't be part of "
1200         "a wxEvtHandler chain; call Unlink() on it first");
1201
1202     wxEvtHandler *handlerOld = GetEventHandler();
1203     wxCHECK_RET( handlerOld, "an old event handler is NULL?" );
1204
1205     // now use wxEvtHandler double-linked list to implement a stack:
1206     handlerToPush->SetNextHandler(handlerOld);
1207
1208     if (handlerOld != this)
1209         handlerOld->SetPreviousHandler(handlerToPush);
1210
1211     SetEventHandler(handlerToPush);
1212
1213 #if wxDEBUG_LEVEL
1214     // final checks of the operations done above:
1215     wxASSERT_MSG( handlerToPush->GetPreviousHandler() == NULL,
1216         "the first handler of the wxWindow stack should "
1217         "have no previous handlers set" );
1218     wxASSERT_MSG( handlerToPush->GetNextHandler() != NULL,
1219         "the first handler of the wxWindow stack should "
1220         "have non-NULL next handler" );
1221
1222     wxEvtHandler* pLast = handlerToPush;
1223     while ( pLast && pLast != this )
1224         pLast = pLast->GetNextHandler();
1225     wxASSERT_MSG( pLast->GetNextHandler() == NULL,
1226         "the last handler of the wxWindow stack should "
1227         "have this window as next handler" );
1228 #endif // wxDEBUG_LEVEL
1229 }
1230
1231 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
1232 {
1233     // we need to pop the wxWindow stack, i.e. we need to remove the first handler
1234
1235     wxEvtHandler *firstHandler = GetEventHandler();
1236     wxCHECK_MSG( firstHandler != NULL, NULL, "wxWindow cannot have a NULL event handler" );
1237     wxCHECK_MSG( firstHandler != this, NULL, "cannot pop the wxWindow itself" );
1238     wxCHECK_MSG( firstHandler->GetPreviousHandler() == NULL, NULL,
1239         "the first handler of the wxWindow stack should have no previous handlers set" );
1240
1241     wxEvtHandler *secondHandler = firstHandler->GetNextHandler();
1242     wxCHECK_MSG( secondHandler != NULL, NULL,
1243         "the first handler of the wxWindow stack should have non-NULL next handler" );
1244
1245     firstHandler->SetNextHandler(NULL);
1246     secondHandler->SetPreviousHandler(NULL);
1247
1248     // now firstHandler is completely unlinked; set secondHandler as the new window event handler
1249     SetEventHandler(secondHandler);
1250
1251     if ( deleteHandler )
1252     {
1253         wxDELETE(firstHandler);
1254     }
1255
1256     return firstHandler;
1257 }
1258
1259 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handlerToRemove)
1260 {
1261     wxCHECK_MSG( handlerToRemove != NULL, false, "RemoveEventHandler(NULL) called" );
1262     wxCHECK_MSG( handlerToRemove != this, false, "Cannot remove the window itself" );
1263
1264     if (handlerToRemove == GetEventHandler())
1265     {
1266         // removing the first event handler is equivalent to "popping" the stack
1267         PopEventHandler(false);
1268         return true;
1269     }
1270
1271     // NOTE: the wxWindow event handler list is always terminated with "this" handler
1272     wxEvtHandler *handlerCur = GetEventHandler()->GetNextHandler();
1273     while ( handlerCur != this && handlerCur )
1274     {
1275         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
1276
1277         if ( handlerCur == handlerToRemove )
1278         {
1279             handlerCur->Unlink();
1280
1281             wxASSERT_MSG( handlerCur != GetEventHandler(),
1282                         "the case Remove == Pop should was already handled" );
1283             return true;
1284         }
1285
1286         handlerCur = handlerNext;
1287     }
1288
1289     wxFAIL_MSG( wxT("where has the event handler gone?") );
1290
1291     return false;
1292 }
1293
1294 bool wxWindowBase::HandleWindowEvent(wxEvent& event) const
1295 {
1296     // SafelyProcessEvent() will handle exceptions nicely
1297     return GetEventHandler()->SafelyProcessEvent(event);
1298 }
1299
1300 // ----------------------------------------------------------------------------
1301 // colours, fonts &c
1302 // ----------------------------------------------------------------------------
1303
1304 void wxWindowBase::InheritAttributes()
1305 {
1306     const wxWindowBase * const parent = GetParent();
1307     if ( !parent )
1308         return;
1309
1310     // we only inherit attributes which had been explicitly set for the parent
1311     // which ensures that this only happens if the user really wants it and
1312     // not by default which wouldn't make any sense in modern GUIs where the
1313     // controls don't all use the same fonts (nor colours)
1314     if ( parent->m_inheritFont && !m_hasFont )
1315         SetFont(parent->GetFont());
1316
1317     // in addition, there is a possibility to explicitly forbid inheriting
1318     // colours at each class level by overriding ShouldInheritColours()
1319     if ( ShouldInheritColours() )
1320     {
1321         if ( parent->m_inheritFgCol && !m_hasFgCol )
1322             SetForegroundColour(parent->GetForegroundColour());
1323
1324         // inheriting (solid) background colour is wrong as it totally breaks
1325         // any kind of themed backgrounds
1326         //
1327         // instead, the controls should use the same background as their parent
1328         // (ideally by not drawing it at all)
1329 #if 0
1330         if ( parent->m_inheritBgCol && !m_hasBgCol )
1331             SetBackgroundColour(parent->GetBackgroundColour());
1332 #endif // 0
1333     }
1334 }
1335
1336 /* static */ wxVisualAttributes
1337 wxWindowBase::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1338 {
1339     // it is important to return valid values for all attributes from here,
1340     // GetXXX() below rely on this
1341     wxVisualAttributes attrs;
1342     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
1343     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
1344
1345     // On Smartphone/PocketPC, wxSYS_COLOUR_WINDOW is a better reflection of
1346     // the usual background colour than wxSYS_COLOUR_BTNFACE.
1347     // It's a pity that wxSYS_COLOUR_WINDOW isn't always a suitable background
1348     // colour on other platforms.
1349
1350 #if defined(__WXWINCE__) && (defined(__SMARTPHONE__) || defined(__POCKETPC__))
1351     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1352 #else
1353     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
1354 #endif
1355     return attrs;
1356 }
1357
1358 wxColour wxWindowBase::GetBackgroundColour() const
1359 {
1360     if ( !m_backgroundColour.IsOk() )
1361     {
1362         wxASSERT_MSG( !m_hasBgCol, wxT("we have invalid explicit bg colour?") );
1363
1364         // get our default background colour
1365         wxColour colBg = GetDefaultAttributes().colBg;
1366
1367         // we must return some valid colour to avoid redoing this every time
1368         // and also to avoid surprising the applications written for older
1369         // wxWidgets versions where GetBackgroundColour() always returned
1370         // something -- so give them something even if it doesn't make sense
1371         // for this window (e.g. it has a themed background)
1372         if ( !colBg.Ok() )
1373             colBg = GetClassDefaultAttributes().colBg;
1374
1375         return colBg;
1376     }
1377     else
1378         return m_backgroundColour;
1379 }
1380
1381 wxColour wxWindowBase::GetForegroundColour() const
1382 {
1383     // logic is the same as above
1384     if ( !m_hasFgCol && !m_foregroundColour.Ok() )
1385     {
1386         wxColour colFg = GetDefaultAttributes().colFg;
1387
1388         if ( !colFg.IsOk() )
1389             colFg = GetClassDefaultAttributes().colFg;
1390
1391         return colFg;
1392     }
1393     else
1394         return m_foregroundColour;
1395 }
1396
1397 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
1398 {
1399     if ( colour == m_backgroundColour )
1400         return false;
1401
1402     m_hasBgCol = colour.IsOk();
1403
1404     m_inheritBgCol = m_hasBgCol;
1405     m_backgroundColour = colour;
1406     SetThemeEnabled( !m_hasBgCol && !m_foregroundColour.Ok() );
1407     return true;
1408 }
1409
1410 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
1411 {
1412     if (colour == m_foregroundColour )
1413         return false;
1414
1415     m_hasFgCol = colour.IsOk();
1416     m_inheritFgCol = m_hasFgCol;
1417     m_foregroundColour = colour;
1418     SetThemeEnabled( !m_hasFgCol && !m_backgroundColour.Ok() );
1419     return true;
1420 }
1421
1422 bool wxWindowBase::SetCursor(const wxCursor& cursor)
1423 {
1424     // setting an invalid cursor is ok, it means that we don't have any special
1425     // cursor
1426     if ( m_cursor.IsSameAs(cursor) )
1427     {
1428         // no change
1429         return false;
1430     }
1431
1432     m_cursor = cursor;
1433
1434     return true;
1435 }
1436
1437 wxFont wxWindowBase::GetFont() const
1438 {
1439     // logic is the same as in GetBackgroundColour()
1440     if ( !m_font.IsOk() )
1441     {
1442         wxASSERT_MSG( !m_hasFont, wxT("we have invalid explicit font?") );
1443
1444         wxFont font = GetDefaultAttributes().font;
1445         if ( !font.IsOk() )
1446             font = GetClassDefaultAttributes().font;
1447
1448         return font;
1449     }
1450     else
1451         return m_font;
1452 }
1453
1454 bool wxWindowBase::SetFont(const wxFont& font)
1455 {
1456     if ( font == m_font )
1457     {
1458         // no change
1459         return false;
1460     }
1461
1462     m_font = font;
1463     m_hasFont = font.IsOk();
1464     m_inheritFont = m_hasFont;
1465
1466     InvalidateBestSize();
1467
1468     return true;
1469 }
1470
1471 #if wxUSE_PALETTE
1472
1473 void wxWindowBase::SetPalette(const wxPalette& pal)
1474 {
1475     m_hasCustomPalette = true;
1476     m_palette = pal;
1477
1478     // VZ: can anyone explain me what do we do here?
1479     wxWindowDC d((wxWindow *) this);
1480     d.SetPalette(pal);
1481 }
1482
1483 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
1484 {
1485     wxWindow *win = (wxWindow *)this;
1486     while ( win && !win->HasCustomPalette() )
1487     {
1488         win = win->GetParent();
1489     }
1490
1491     return win;
1492 }
1493
1494 #endif // wxUSE_PALETTE
1495
1496 #if wxUSE_CARET
1497 void wxWindowBase::SetCaret(wxCaret *caret)
1498 {
1499     if ( m_caret )
1500     {
1501         delete m_caret;
1502     }
1503
1504     m_caret = caret;
1505
1506     if ( m_caret )
1507     {
1508         wxASSERT_MSG( m_caret->GetWindow() == this,
1509                       wxT("caret should be created associated to this window") );
1510     }
1511 }
1512 #endif // wxUSE_CARET
1513
1514 #if wxUSE_VALIDATORS
1515 // ----------------------------------------------------------------------------
1516 // validators
1517 // ----------------------------------------------------------------------------
1518
1519 void wxWindowBase::SetValidator(const wxValidator& validator)
1520 {
1521     if ( m_windowValidator )
1522         delete m_windowValidator;
1523
1524     m_windowValidator = (wxValidator *)validator.Clone();
1525
1526     if ( m_windowValidator )
1527         m_windowValidator->SetWindow(this);
1528 }
1529 #endif // wxUSE_VALIDATORS
1530
1531 // ----------------------------------------------------------------------------
1532 // update region stuff
1533 // ----------------------------------------------------------------------------
1534
1535 wxRect wxWindowBase::GetUpdateClientRect() const
1536 {
1537     wxRegion rgnUpdate = GetUpdateRegion();
1538     rgnUpdate.Intersect(GetClientRect());
1539     wxRect rectUpdate = rgnUpdate.GetBox();
1540     wxPoint ptOrigin = GetClientAreaOrigin();
1541     rectUpdate.x -= ptOrigin.x;
1542     rectUpdate.y -= ptOrigin.y;
1543
1544     return rectUpdate;
1545 }
1546
1547 bool wxWindowBase::DoIsExposed(int x, int y) const
1548 {
1549     return m_updateRegion.Contains(x, y) != wxOutRegion;
1550 }
1551
1552 bool wxWindowBase::DoIsExposed(int x, int y, int w, int h) const
1553 {
1554     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
1555 }
1556
1557 void wxWindowBase::ClearBackground()
1558 {
1559     // wxGTK uses its own version, no need to add never used code
1560 #ifndef __WXGTK__
1561     wxClientDC dc((wxWindow *)this);
1562     wxBrush brush(GetBackgroundColour(), wxBRUSHSTYLE_SOLID);
1563     dc.SetBackground(brush);
1564     dc.Clear();
1565 #endif // __WXGTK__
1566 }
1567
1568 // ----------------------------------------------------------------------------
1569 // find child window by id or name
1570 // ----------------------------------------------------------------------------
1571
1572 wxWindow *wxWindowBase::FindWindow(long id) const
1573 {
1574     if ( id == m_windowId )
1575         return (wxWindow *)this;
1576
1577     wxWindowBase *res = NULL;
1578     wxWindowList::compatibility_iterator node;
1579     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1580     {
1581         wxWindowBase *child = node->GetData();
1582         res = child->FindWindow( id );
1583     }
1584
1585     return (wxWindow *)res;
1586 }
1587
1588 wxWindow *wxWindowBase::FindWindow(const wxString& name) const
1589 {
1590     if ( name == m_windowName )
1591         return (wxWindow *)this;
1592
1593     wxWindowBase *res = NULL;
1594     wxWindowList::compatibility_iterator node;
1595     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1596     {
1597         wxWindow *child = node->GetData();
1598         res = child->FindWindow(name);
1599     }
1600
1601     return (wxWindow *)res;
1602 }
1603
1604
1605 // find any window by id or name or label: If parent is non-NULL, look through
1606 // children for a label or title matching the specified string. If NULL, look
1607 // through all top-level windows.
1608 //
1609 // to avoid duplicating code we reuse the same helper function but with
1610 // different comparators
1611
1612 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1613                                 const wxString& label, long id);
1614
1615 static
1616 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1617                            long WXUNUSED(id))
1618 {
1619     return win->GetLabel() == label;
1620 }
1621
1622 static
1623 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1624                           long WXUNUSED(id))
1625 {
1626     return win->GetName() == label;
1627 }
1628
1629 static
1630 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1631                         long id)
1632 {
1633     return win->GetId() == id;
1634 }
1635
1636 // recursive helper for the FindWindowByXXX() functions
1637 static
1638 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1639                                   const wxString& label,
1640                                   long id,
1641                                   wxFindWindowCmp cmp)
1642 {
1643     if ( parent )
1644     {
1645         // see if this is the one we're looking for
1646         if ( (*cmp)(parent, label, id) )
1647             return (wxWindow *)parent;
1648
1649         // It wasn't, so check all its children
1650         for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
1651               node;
1652               node = node->GetNext() )
1653         {
1654             // recursively check each child
1655             wxWindow *win = (wxWindow *)node->GetData();
1656             wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1657             if (retwin)
1658                 return retwin;
1659         }
1660     }
1661
1662     // Not found
1663     return NULL;
1664 }
1665
1666 // helper for FindWindowByXXX()
1667 static
1668 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1669                              const wxString& label,
1670                              long id,
1671                              wxFindWindowCmp cmp)
1672 {
1673     if ( parent )
1674     {
1675         // just check parent and all its children
1676         return wxFindWindowRecursively(parent, label, id, cmp);
1677     }
1678
1679     // start at very top of wx's windows
1680     for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1681           node;
1682           node = node->GetNext() )
1683     {
1684         // recursively check each window & its children
1685         wxWindow *win = node->GetData();
1686         wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1687         if (retwin)
1688             return retwin;
1689     }
1690
1691     return NULL;
1692 }
1693
1694 /* static */
1695 wxWindow *
1696 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1697 {
1698     return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1699 }
1700
1701 /* static */
1702 wxWindow *
1703 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1704 {
1705     wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1706
1707     if ( !win )
1708     {
1709         // fall back to the label
1710         win = FindWindowByLabel(title, parent);
1711     }
1712
1713     return win;
1714 }
1715
1716 /* static */
1717 wxWindow *
1718 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1719 {
1720     return wxFindWindowHelper(parent, wxEmptyString, id, wxFindWindowCmpIds);
1721 }
1722
1723 // ----------------------------------------------------------------------------
1724 // dialog oriented functions
1725 // ----------------------------------------------------------------------------
1726
1727 void wxWindowBase::MakeModal(bool modal)
1728 {
1729     // Disable all other windows
1730     if ( IsTopLevel() )
1731     {
1732         wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1733         while (node)
1734         {
1735             wxWindow *win = node->GetData();
1736             if (win != this)
1737                 win->Enable(!modal);
1738
1739             node = node->GetNext();
1740         }
1741     }
1742 }
1743
1744 bool wxWindowBase::Validate()
1745 {
1746 #if wxUSE_VALIDATORS
1747     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1748
1749     wxWindowList::compatibility_iterator node;
1750     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1751     {
1752         wxWindowBase *child = node->GetData();
1753         wxValidator *validator = child->GetValidator();
1754         if ( validator && !validator->Validate((wxWindow *)this) )
1755         {
1756             return false;
1757         }
1758
1759         if ( recurse && !child->Validate() )
1760         {
1761             return false;
1762         }
1763     }
1764 #endif // wxUSE_VALIDATORS
1765
1766     return true;
1767 }
1768
1769 bool wxWindowBase::TransferDataToWindow()
1770 {
1771 #if wxUSE_VALIDATORS
1772     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1773
1774     wxWindowList::compatibility_iterator node;
1775     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1776     {
1777         wxWindowBase *child = node->GetData();
1778         wxValidator *validator = child->GetValidator();
1779         if ( validator && !validator->TransferToWindow() )
1780         {
1781             wxLogWarning(_("Could not transfer data to window"));
1782 #if wxUSE_LOG
1783             wxLog::FlushActive();
1784 #endif // wxUSE_LOG
1785
1786             return false;
1787         }
1788
1789         if ( recurse )
1790         {
1791             if ( !child->TransferDataToWindow() )
1792             {
1793                 // warning already given
1794                 return false;
1795             }
1796         }
1797     }
1798 #endif // wxUSE_VALIDATORS
1799
1800     return true;
1801 }
1802
1803 bool wxWindowBase::TransferDataFromWindow()
1804 {
1805 #if wxUSE_VALIDATORS
1806     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1807
1808     wxWindowList::compatibility_iterator node;
1809     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1810     {
1811         wxWindow *child = node->GetData();
1812         wxValidator *validator = child->GetValidator();
1813         if ( validator && !validator->TransferFromWindow() )
1814         {
1815             // nop warning here because the application is supposed to give
1816             // one itself - we don't know here what might have gone wrongly
1817
1818             return false;
1819         }
1820
1821         if ( recurse )
1822         {
1823             if ( !child->TransferDataFromWindow() )
1824             {
1825                 // warning already given
1826                 return false;
1827             }
1828         }
1829     }
1830 #endif // wxUSE_VALIDATORS
1831
1832     return true;
1833 }
1834
1835 void wxWindowBase::InitDialog()
1836 {
1837     wxInitDialogEvent event(GetId());
1838     event.SetEventObject( this );
1839     GetEventHandler()->ProcessEvent(event);
1840 }
1841
1842 // ----------------------------------------------------------------------------
1843 // context-sensitive help support
1844 // ----------------------------------------------------------------------------
1845
1846 #if wxUSE_HELP
1847
1848 // associate this help text with this window
1849 void wxWindowBase::SetHelpText(const wxString& text)
1850 {
1851     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1852     if ( helpProvider )
1853     {
1854         helpProvider->AddHelp(this, text);
1855     }
1856 }
1857
1858 #if WXWIN_COMPATIBILITY_2_8
1859 // associate this help text with all windows with the same id as this
1860 // one
1861 void wxWindowBase::SetHelpTextForId(const wxString& text)
1862 {
1863     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1864     if ( helpProvider )
1865     {
1866         helpProvider->AddHelp(GetId(), text);
1867     }
1868 }
1869 #endif // WXWIN_COMPATIBILITY_2_8
1870
1871 // get the help string associated with this window (may be empty)
1872 // default implementation forwards calls to the help provider
1873 wxString
1874 wxWindowBase::GetHelpTextAtPoint(const wxPoint & WXUNUSED(pt),
1875                                  wxHelpEvent::Origin WXUNUSED(origin)) const
1876 {
1877     wxString text;
1878     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1879     if ( helpProvider )
1880     {
1881         text = helpProvider->GetHelp(this);
1882     }
1883
1884     return text;
1885 }
1886
1887 // show help for this window
1888 void wxWindowBase::OnHelp(wxHelpEvent& event)
1889 {
1890     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1891     if ( helpProvider )
1892     {
1893         wxPoint pos = event.GetPosition();
1894         const wxHelpEvent::Origin origin = event.GetOrigin();
1895         if ( origin == wxHelpEvent::Origin_Keyboard )
1896         {
1897             // if the help event was generated from keyboard it shouldn't
1898             // appear at the mouse position (which is still the only position
1899             // associated with help event) if the mouse is far away, although
1900             // we still do use the mouse position if it's over the window
1901             // because we suppose the user looks approximately at the mouse
1902             // already and so it would be more convenient than showing tooltip
1903             // at some arbitrary position which can be quite far from it
1904             const wxRect rectClient = GetClientRect();
1905             if ( !rectClient.Contains(ScreenToClient(pos)) )
1906             {
1907                 // position help slightly under and to the right of this window
1908                 pos = ClientToScreen(wxPoint(
1909                         2*GetCharWidth(),
1910                         rectClient.height + GetCharHeight()
1911                       ));
1912             }
1913         }
1914
1915         if ( helpProvider->ShowHelpAtPoint(this, pos, origin) )
1916         {
1917             // skip the event.Skip() below
1918             return;
1919         }
1920     }
1921
1922     event.Skip();
1923 }
1924
1925 #endif // wxUSE_HELP
1926
1927 // ----------------------------------------------------------------------------
1928 // tooltips
1929 // ----------------------------------------------------------------------------
1930
1931 #if wxUSE_TOOLTIPS
1932
1933 wxString wxWindowBase::GetToolTipText() const
1934 {
1935     return m_tooltip ? m_tooltip->GetTip() : wxString();
1936 }
1937
1938 void wxWindowBase::SetToolTip( const wxString &tip )
1939 {
1940     // don't create the new tooltip if we already have one
1941     if ( m_tooltip )
1942     {
1943         m_tooltip->SetTip( tip );
1944     }
1945     else
1946     {
1947         SetToolTip( new wxToolTip( tip ) );
1948     }
1949
1950     // setting empty tooltip text does not remove the tooltip any more - use
1951     // SetToolTip(NULL) for this
1952 }
1953
1954 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1955 {
1956     if ( m_tooltip != tooltip )
1957     {
1958         if ( m_tooltip )
1959             delete m_tooltip;
1960
1961         m_tooltip = tooltip;
1962     }
1963 }
1964
1965 #endif // wxUSE_TOOLTIPS
1966
1967 // ----------------------------------------------------------------------------
1968 // constraints and sizers
1969 // ----------------------------------------------------------------------------
1970
1971 #if wxUSE_CONSTRAINTS
1972
1973 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1974 {
1975     if ( m_constraints )
1976     {
1977         UnsetConstraints(m_constraints);
1978         delete m_constraints;
1979     }
1980     m_constraints = constraints;
1981     if ( m_constraints )
1982     {
1983         // Make sure other windows know they're part of a 'meaningful relationship'
1984         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1985             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1986         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1987             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1988         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1989             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1990         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1991             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1992         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1993             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1994         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1995             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1996         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1997             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1998         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1999             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
2000     }
2001 }
2002
2003 // This removes any dangling pointers to this window in other windows'
2004 // constraintsInvolvedIn lists.
2005 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
2006 {
2007     if ( c )
2008     {
2009         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
2010             c->left.GetOtherWindow()->RemoveConstraintReference(this);
2011         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
2012             c->top.GetOtherWindow()->RemoveConstraintReference(this);
2013         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
2014             c->right.GetOtherWindow()->RemoveConstraintReference(this);
2015         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
2016             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
2017         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
2018             c->width.GetOtherWindow()->RemoveConstraintReference(this);
2019         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
2020             c->height.GetOtherWindow()->RemoveConstraintReference(this);
2021         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
2022             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
2023         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
2024             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
2025     }
2026 }
2027
2028 // Back-pointer to other windows we're involved with, so if we delete this
2029 // window, we must delete any constraints we're involved with.
2030 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
2031 {
2032     if ( !m_constraintsInvolvedIn )
2033         m_constraintsInvolvedIn = new wxWindowList;
2034     if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
2035         m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
2036 }
2037
2038 // REMOVE back-pointer to other windows we're involved with.
2039 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
2040 {
2041     if ( m_constraintsInvolvedIn )
2042         m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
2043 }
2044
2045 // Reset any constraints that mention this window
2046 void wxWindowBase::DeleteRelatedConstraints()
2047 {
2048     if ( m_constraintsInvolvedIn )
2049     {
2050         wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
2051         while (node)
2052         {
2053             wxWindow *win = node->GetData();
2054             wxLayoutConstraints *constr = win->GetConstraints();
2055
2056             // Reset any constraints involving this window
2057             if ( constr )
2058             {
2059                 constr->left.ResetIfWin(this);
2060                 constr->top.ResetIfWin(this);
2061                 constr->right.ResetIfWin(this);
2062                 constr->bottom.ResetIfWin(this);
2063                 constr->width.ResetIfWin(this);
2064                 constr->height.ResetIfWin(this);
2065                 constr->centreX.ResetIfWin(this);
2066                 constr->centreY.ResetIfWin(this);
2067             }
2068
2069             wxWindowList::compatibility_iterator next = node->GetNext();
2070             m_constraintsInvolvedIn->Erase(node);
2071             node = next;
2072         }
2073
2074         wxDELETE(m_constraintsInvolvedIn);
2075     }
2076 }
2077
2078 #endif // wxUSE_CONSTRAINTS
2079
2080 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
2081 {
2082     if ( sizer == m_windowSizer)
2083         return;
2084
2085     if ( m_windowSizer )
2086     {
2087         m_windowSizer->SetContainingWindow(NULL);
2088
2089         if ( deleteOld )
2090             delete m_windowSizer;
2091     }
2092
2093     m_windowSizer = sizer;
2094     if ( m_windowSizer )
2095     {
2096         m_windowSizer->SetContainingWindow((wxWindow *)this);
2097     }
2098
2099     SetAutoLayout(m_windowSizer != NULL);
2100 }
2101
2102 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
2103 {
2104     SetSizer( sizer, deleteOld );
2105     sizer->SetSizeHints( (wxWindow*) this );
2106 }
2107
2108
2109 void wxWindowBase::SetContainingSizer(wxSizer* sizer)
2110 {
2111     // adding a window to a sizer twice is going to result in fatal and
2112     // hard to debug problems later because when deleting the second
2113     // associated wxSizerItem we're going to dereference a dangling
2114     // pointer; so try to detect this as early as possible
2115     wxASSERT_MSG( !sizer || m_containingSizer != sizer,
2116                   wxT("Adding a window to the same sizer twice?") );
2117
2118     m_containingSizer = sizer;
2119 }
2120
2121 #if wxUSE_CONSTRAINTS
2122
2123 void wxWindowBase::SatisfyConstraints()
2124 {
2125     wxLayoutConstraints *constr = GetConstraints();
2126     bool wasOk = constr && constr->AreSatisfied();
2127
2128     ResetConstraints();   // Mark all constraints as unevaluated
2129
2130     int noChanges = 1;
2131
2132     // if we're a top level panel (i.e. our parent is frame/dialog), our
2133     // own constraints will never be satisfied any more unless we do it
2134     // here
2135     if ( wasOk )
2136     {
2137         while ( noChanges > 0 )
2138         {
2139             LayoutPhase1(&noChanges);
2140         }
2141     }
2142
2143     LayoutPhase2(&noChanges);
2144 }
2145
2146 #endif // wxUSE_CONSTRAINTS
2147
2148 bool wxWindowBase::Layout()
2149 {
2150     // If there is a sizer, use it instead of the constraints
2151     if ( GetSizer() )
2152     {
2153         int w = 0, h = 0;
2154         GetVirtualSize(&w, &h);
2155         GetSizer()->SetDimension( 0, 0, w, h );
2156     }
2157 #if wxUSE_CONSTRAINTS
2158     else
2159     {
2160         SatisfyConstraints(); // Find the right constraints values
2161         SetConstraintSizes(); // Recursively set the real window sizes
2162     }
2163 #endif
2164
2165     return true;
2166 }
2167
2168 void wxWindowBase::InternalOnSize(wxSizeEvent& event)
2169 {
2170     if ( GetAutoLayout() )
2171         Layout();
2172
2173     event.Skip();
2174 }
2175
2176 #if wxUSE_CONSTRAINTS
2177
2178 // first phase of the constraints evaluation: set our own constraints
2179 bool wxWindowBase::LayoutPhase1(int *noChanges)
2180 {
2181     wxLayoutConstraints *constr = GetConstraints();
2182
2183     return !constr || constr->SatisfyConstraints(this, noChanges);
2184 }
2185
2186 // second phase: set the constraints for our children
2187 bool wxWindowBase::LayoutPhase2(int *noChanges)
2188 {
2189     *noChanges = 0;
2190
2191     // Layout children
2192     DoPhase(1);
2193
2194     // Layout grand children
2195     DoPhase(2);
2196
2197     return true;
2198 }
2199
2200 // Do a phase of evaluating child constraints
2201 bool wxWindowBase::DoPhase(int phase)
2202 {
2203     // the list containing the children for which the constraints are already
2204     // set correctly
2205     wxWindowList succeeded;
2206
2207     // the max number of iterations we loop before concluding that we can't set
2208     // the constraints
2209     static const int maxIterations = 500;
2210
2211     for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
2212     {
2213         int noChanges = 0;
2214
2215         // loop over all children setting their constraints
2216         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2217               node;
2218               node = node->GetNext() )
2219         {
2220             wxWindow *child = node->GetData();
2221             if ( child->IsTopLevel() )
2222             {
2223                 // top level children are not inside our client area
2224                 continue;
2225             }
2226
2227             if ( !child->GetConstraints() || succeeded.Find(child) )
2228             {
2229                 // this one is either already ok or nothing we can do about it
2230                 continue;
2231             }
2232
2233             int tempNoChanges = 0;
2234             bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
2235                                       : child->LayoutPhase2(&tempNoChanges);
2236             noChanges += tempNoChanges;
2237
2238             if ( success )
2239             {
2240                 succeeded.Append(child);
2241             }
2242         }
2243
2244         if ( !noChanges )
2245         {
2246             // constraints are set
2247             break;
2248         }
2249     }
2250
2251     return true;
2252 }
2253
2254 void wxWindowBase::ResetConstraints()
2255 {
2256     wxLayoutConstraints *constr = GetConstraints();
2257     if ( constr )
2258     {
2259         constr->left.SetDone(false);
2260         constr->top.SetDone(false);
2261         constr->right.SetDone(false);
2262         constr->bottom.SetDone(false);
2263         constr->width.SetDone(false);
2264         constr->height.SetDone(false);
2265         constr->centreX.SetDone(false);
2266         constr->centreY.SetDone(false);
2267     }
2268
2269     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2270     while (node)
2271     {
2272         wxWindow *win = node->GetData();
2273         if ( !win->IsTopLevel() )
2274             win->ResetConstraints();
2275         node = node->GetNext();
2276     }
2277 }
2278
2279 // Need to distinguish between setting the 'fake' size for windows and sizers,
2280 // and setting the real values.
2281 void wxWindowBase::SetConstraintSizes(bool recurse)
2282 {
2283     wxLayoutConstraints *constr = GetConstraints();
2284     if ( constr && constr->AreSatisfied() )
2285     {
2286         int x = constr->left.GetValue();
2287         int y = constr->top.GetValue();
2288         int w = constr->width.GetValue();
2289         int h = constr->height.GetValue();
2290
2291         if ( (constr->width.GetRelationship() != wxAsIs ) ||
2292              (constr->height.GetRelationship() != wxAsIs) )
2293         {
2294             // We really shouldn't set negative sizes for the windows so make
2295             // them at least of 1*1 size
2296             SetSize(x, y, w > 0 ? w : 1, h > 0 ? h : 1);
2297         }
2298         else
2299         {
2300             // If we don't want to resize this window, just move it...
2301             Move(x, y);
2302         }
2303     }
2304     else if ( constr )
2305     {
2306         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
2307                    GetClassInfo()->GetClassName(),
2308                    GetName().c_str());
2309     }
2310
2311     if ( recurse )
2312     {
2313         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2314         while (node)
2315         {
2316             wxWindow *win = node->GetData();
2317             if ( !win->IsTopLevel() && win->GetConstraints() )
2318                 win->SetConstraintSizes();
2319             node = node->GetNext();
2320         }
2321     }
2322 }
2323
2324 // Only set the size/position of the constraint (if any)
2325 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
2326 {
2327     wxLayoutConstraints *constr = GetConstraints();
2328     if ( constr )
2329     {
2330         if ( x != wxDefaultCoord )
2331         {
2332             constr->left.SetValue(x);
2333             constr->left.SetDone(true);
2334         }
2335         if ( y != wxDefaultCoord )
2336         {
2337             constr->top.SetValue(y);
2338             constr->top.SetDone(true);
2339         }
2340         if ( w != wxDefaultCoord )
2341         {
2342             constr->width.SetValue(w);
2343             constr->width.SetDone(true);
2344         }
2345         if ( h != wxDefaultCoord )
2346         {
2347             constr->height.SetValue(h);
2348             constr->height.SetDone(true);
2349         }
2350     }
2351 }
2352
2353 void wxWindowBase::MoveConstraint(int x, int y)
2354 {
2355     wxLayoutConstraints *constr = GetConstraints();
2356     if ( constr )
2357     {
2358         if ( x != wxDefaultCoord )
2359         {
2360             constr->left.SetValue(x);
2361             constr->left.SetDone(true);
2362         }
2363         if ( y != wxDefaultCoord )
2364         {
2365             constr->top.SetValue(y);
2366             constr->top.SetDone(true);
2367         }
2368     }
2369 }
2370
2371 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
2372 {
2373     wxLayoutConstraints *constr = GetConstraints();
2374     if ( constr )
2375     {
2376         *w = constr->width.GetValue();
2377         *h = constr->height.GetValue();
2378     }
2379     else
2380         GetSize(w, h);
2381 }
2382
2383 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
2384 {
2385     wxLayoutConstraints *constr = GetConstraints();
2386     if ( constr )
2387     {
2388         *w = constr->width.GetValue();
2389         *h = constr->height.GetValue();
2390     }
2391     else
2392         GetClientSize(w, h);
2393 }
2394
2395 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
2396 {
2397     wxLayoutConstraints *constr = GetConstraints();
2398     if ( constr )
2399     {
2400         *x = constr->left.GetValue();
2401         *y = constr->top.GetValue();
2402     }
2403     else
2404         GetPosition(x, y);
2405 }
2406
2407 #endif // wxUSE_CONSTRAINTS
2408
2409 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
2410 {
2411     // don't do it for the dialogs/frames - they float independently of their
2412     // parent
2413     if ( !IsTopLevel() )
2414     {
2415         wxWindow *parent = GetParent();
2416         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
2417         {
2418             wxPoint pt(parent->GetClientAreaOrigin());
2419             x += pt.x;
2420             y += pt.y;
2421         }
2422     }
2423 }
2424
2425 // ----------------------------------------------------------------------------
2426 // Update UI processing
2427 // ----------------------------------------------------------------------------
2428
2429 void wxWindowBase::UpdateWindowUI(long flags)
2430 {
2431     wxUpdateUIEvent event(GetId());
2432     event.SetEventObject(this);
2433
2434     if ( GetEventHandler()->ProcessEvent(event) )
2435     {
2436         DoUpdateWindowUI(event);
2437     }
2438
2439     if (flags & wxUPDATE_UI_RECURSE)
2440     {
2441         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2442         while (node)
2443         {
2444             wxWindow* child = (wxWindow*) node->GetData();
2445             child->UpdateWindowUI(flags);
2446             node = node->GetNext();
2447         }
2448     }
2449 }
2450
2451 // do the window-specific processing after processing the update event
2452 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
2453 {
2454     if ( event.GetSetEnabled() )
2455         Enable(event.GetEnabled());
2456
2457     if ( event.GetSetShown() )
2458         Show(event.GetShown());
2459 }
2460
2461 // ----------------------------------------------------------------------------
2462 // dialog units translations
2463 // ----------------------------------------------------------------------------
2464
2465 // Windows' computes dialog units using average character width over upper-
2466 // and lower-case ASCII alphabet and not using the average character width
2467 // metadata stored in the font; see
2468 // http://support.microsoft.com/default.aspx/kb/145994 for detailed discussion.
2469 // It's important that we perform the conversion in identical way, because
2470 // dialog units natively exist only on Windows and Windows HIG is expressed
2471 // using them.
2472 wxSize wxWindowBase::GetDlgUnitBase() const
2473 {
2474     const wxWindow *parent = wxGetTopLevelParent((wxWindow*)this);
2475
2476     if ( !parent->m_font.IsOk() )
2477     {
2478         // Default GUI font is used. This is the most common case, so
2479         // cache the results.
2480         static wxSize s_defFontSize;
2481         if ( s_defFontSize.x == 0 )
2482             s_defFontSize = wxPrivate::GetAverageASCIILetterSize(*parent);
2483         return s_defFontSize;
2484     }
2485     else
2486     {
2487         // Custom font, we always need to compute the result
2488         return wxPrivate::GetAverageASCIILetterSize(*parent);
2489     }
2490 }
2491
2492 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt) const
2493 {
2494     const wxSize base = GetDlgUnitBase();
2495
2496     // NB: wxMulDivInt32() is used, because it correctly rounds the result
2497
2498     wxPoint pt2 = wxDefaultPosition;
2499     if (pt.x != wxDefaultCoord)
2500         pt2.x = wxMulDivInt32(pt.x, 4, base.x);
2501     if (pt.y != wxDefaultCoord)
2502         pt2.y = wxMulDivInt32(pt.y, 8, base.y);
2503
2504     return pt2;
2505 }
2506
2507 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt) const
2508 {
2509     const wxSize base = GetDlgUnitBase();
2510
2511     wxPoint pt2 = wxDefaultPosition;
2512     if (pt.x != wxDefaultCoord)
2513         pt2.x = wxMulDivInt32(pt.x, base.x, 4);
2514     if (pt.y != wxDefaultCoord)
2515         pt2.y = wxMulDivInt32(pt.y, base.y, 8);
2516
2517     return pt2;
2518 }
2519
2520 // ----------------------------------------------------------------------------
2521 // event handlers
2522 // ----------------------------------------------------------------------------
2523
2524 // propagate the colour change event to the subwindows
2525 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& WXUNUSED(event))
2526 {
2527     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2528     while ( node )
2529     {
2530         // Only propagate to non-top-level windows
2531         wxWindow *win = node->GetData();
2532         if ( !win->IsTopLevel() )
2533         {
2534             wxSysColourChangedEvent event2;
2535             event2.SetEventObject(win);
2536             win->GetEventHandler()->ProcessEvent(event2);
2537         }
2538
2539         node = node->GetNext();
2540     }
2541
2542     Refresh();
2543 }
2544
2545 // the default action is to populate dialog with data when it's created,
2546 // and nudge the UI into displaying itself correctly in case
2547 // we've turned the wxUpdateUIEvents frequency down low.
2548 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
2549 {
2550     TransferDataToWindow();
2551
2552     // Update the UI at this point
2553     UpdateWindowUI(wxUPDATE_UI_RECURSE);
2554 }
2555
2556 // ----------------------------------------------------------------------------
2557 // menu-related functions
2558 // ----------------------------------------------------------------------------
2559
2560 #if wxUSE_MENUS
2561
2562 bool wxWindowBase::PopupMenu(wxMenu *menu, int x, int y)
2563 {
2564     wxCHECK_MSG( menu, false, "can't popup NULL menu" );
2565
2566     wxMenuInvokingWindowSetter
2567         setInvokingWin(*menu, static_cast<wxWindow *>(this));
2568
2569     wxCurrentPopupMenu = menu;
2570     const bool rc = DoPopupMenu(menu, x, y);
2571     wxCurrentPopupMenu = NULL;
2572
2573     return rc;
2574 }
2575
2576 // this is used to pass the id of the selected item from the menu event handler
2577 // to the main function itself
2578 //
2579 // it's ok to use a global here as there can be at most one popup menu shown at
2580 // any time
2581 static int gs_popupMenuSelection = wxID_NONE;
2582
2583 void wxWindowBase::InternalOnPopupMenu(wxCommandEvent& event)
2584 {
2585     // store the id in a global variable where we'll retrieve it from later
2586     gs_popupMenuSelection = event.GetId();
2587 }
2588
2589 void wxWindowBase::InternalOnPopupMenuUpdate(wxUpdateUIEvent& WXUNUSED(event))
2590 {
2591     // nothing to do but do not skip it
2592 }
2593
2594 int
2595 wxWindowBase::DoGetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y)
2596 {
2597     gs_popupMenuSelection = wxID_NONE;
2598
2599     Connect(wxEVT_COMMAND_MENU_SELECTED,
2600             wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2601             NULL,
2602             this);
2603
2604     // it is common to construct the menu passed to this function dynamically
2605     // using some fixed range of ids which could clash with the ids used
2606     // elsewhere in the program, which could result in some menu items being
2607     // unintentionally disabled or otherwise modified by update UI handlers
2608     // elsewhere in the program code and this is difficult to avoid in the
2609     // program itself, so instead we just temporarily suspend UI updating while
2610     // this menu is shown
2611     Connect(wxEVT_UPDATE_UI,
2612             wxUpdateUIEventHandler(wxWindowBase::InternalOnPopupMenuUpdate),
2613             NULL,
2614             this);
2615
2616     PopupMenu(&menu, x, y);
2617
2618     Disconnect(wxEVT_UPDATE_UI,
2619                wxUpdateUIEventHandler(wxWindowBase::InternalOnPopupMenuUpdate),
2620                NULL,
2621                this);
2622     Disconnect(wxEVT_COMMAND_MENU_SELECTED,
2623                wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2624                NULL,
2625                this);
2626
2627     return gs_popupMenuSelection;
2628 }
2629
2630 #endif // wxUSE_MENUS
2631
2632 // methods for drawing the sizers in a visible way: this is currently only
2633 // enabled for "full debug" builds with wxDEBUG_LEVEL==2 as it doesn't work
2634 // that well and also because we don't want to leave it enabled in default
2635 // builds used for production
2636 #if wxDEBUG_LEVEL > 1
2637
2638 static void DrawSizers(wxWindowBase *win);
2639
2640 static void DrawBorder(wxWindowBase *win, const wxRect& rect, bool fill, const wxPen* pen)
2641 {
2642     wxClientDC dc((wxWindow *)win);
2643     dc.SetPen(*pen);
2644     dc.SetBrush(fill ? wxBrush(pen->GetColour(), wxBRUSHSTYLE_CROSSDIAG_HATCH) :
2645                        *wxTRANSPARENT_BRUSH);
2646     dc.DrawRectangle(rect.Deflate(1, 1));
2647 }
2648
2649 static void DrawSizer(wxWindowBase *win, wxSizer *sizer)
2650 {
2651     const wxSizerItemList& items = sizer->GetChildren();
2652     for ( wxSizerItemList::const_iterator i = items.begin(),
2653                                         end = items.end();
2654           i != end;
2655           ++i )
2656     {
2657         wxSizerItem *item = *i;
2658         if ( item->IsSizer() )
2659         {
2660             DrawBorder(win, item->GetRect().Deflate(2), false, wxRED_PEN);
2661             DrawSizer(win, item->GetSizer());
2662         }
2663         else if ( item->IsSpacer() )
2664         {
2665             DrawBorder(win, item->GetRect().Deflate(2), true, wxBLUE_PEN);
2666         }
2667         else if ( item->IsWindow() )
2668         {
2669             DrawSizers(item->GetWindow());
2670         }
2671         else
2672             wxFAIL_MSG("inconsistent wxSizerItem status!");
2673     }
2674 }
2675
2676 static void DrawSizers(wxWindowBase *win)
2677 {
2678     DrawBorder(win, win->GetClientSize(), false, wxGREEN_PEN);
2679
2680     wxSizer *sizer = win->GetSizer();
2681     if ( sizer )
2682     {
2683         DrawSizer(win, sizer);
2684     }
2685     else // no sizer, still recurse into the children
2686     {
2687         const wxWindowList& children = win->GetChildren();
2688         for ( wxWindowList::const_iterator i = children.begin(),
2689                                          end = children.end();
2690               i != end;
2691               ++i )
2692         {
2693             DrawSizers(*i);
2694         }
2695
2696         // show all kind of sizes of this window; see the "window sizing" topic
2697         // overview for more info about the various differences:
2698         wxSize fullSz = win->GetSize();
2699         wxSize clientSz = win->GetClientSize();
2700         wxSize bestSz = win->GetBestSize();
2701         wxSize minSz = win->GetMinSize();
2702         wxSize maxSz = win->GetMaxSize();
2703         wxSize virtualSz = win->GetVirtualSize();
2704
2705         wxMessageOutputDebug dbgout;
2706         dbgout.Printf(
2707             "%-10s => fullsz=%4d;%-4d  clientsz=%4d;%-4d  bestsz=%4d;%-4d  minsz=%4d;%-4d  maxsz=%4d;%-4d virtualsz=%4d;%-4d\n",
2708             win->GetName(),
2709             fullSz.x, fullSz.y,
2710             clientSz.x, clientSz.y,
2711             bestSz.x, bestSz.y,
2712             minSz.x, minSz.y,
2713             maxSz.x, maxSz.y,
2714             virtualSz.x, virtualSz.y);
2715     }
2716 }
2717
2718 #endif // wxDEBUG_LEVEL
2719
2720 // process special middle clicks
2721 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
2722 {
2723     if ( event.ControlDown() && event.AltDown() )
2724     {
2725 #if wxDEBUG_LEVEL > 1
2726         // Ctrl-Alt-Shift-mclick makes the sizers visible in debug builds
2727         if ( event.ShiftDown() )
2728         {
2729             DrawSizers(this);
2730         }
2731         else
2732 #endif // __WXDEBUG__
2733         {
2734             // just Ctrl-Alt-middle click shows information about wx version
2735             ::wxInfoMessageBox((wxWindow*)this);
2736         }
2737     }
2738     else
2739     {
2740         event.Skip();
2741     }
2742 }
2743
2744 // ----------------------------------------------------------------------------
2745 // accessibility
2746 // ----------------------------------------------------------------------------
2747
2748 #if wxUSE_ACCESSIBILITY
2749 void wxWindowBase::SetAccessible(wxAccessible* accessible)
2750 {
2751     if (m_accessible && (accessible != m_accessible))
2752         delete m_accessible;
2753     m_accessible = accessible;
2754     if (m_accessible)
2755         m_accessible->SetWindow((wxWindow*) this);
2756 }
2757
2758 // Returns the accessible object, creating if necessary.
2759 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2760 {
2761     if (!m_accessible)
2762         m_accessible = CreateAccessible();
2763     return m_accessible;
2764 }
2765
2766 // Override to create a specific accessible object.
2767 wxAccessible* wxWindowBase::CreateAccessible()
2768 {
2769     return new wxWindowAccessible((wxWindow*) this);
2770 }
2771
2772 #endif
2773
2774 // ----------------------------------------------------------------------------
2775 // list classes implementation
2776 // ----------------------------------------------------------------------------
2777
2778 #if wxUSE_STL
2779
2780 #include "wx/listimpl.cpp"
2781 WX_DEFINE_LIST(wxWindowList)
2782
2783 #else // !wxUSE_STL
2784
2785 void wxWindowListNode::DeleteData()
2786 {
2787     delete (wxWindow *)GetData();
2788 }
2789
2790 #endif // wxUSE_STL/!wxUSE_STL
2791
2792 // ----------------------------------------------------------------------------
2793 // borders
2794 // ----------------------------------------------------------------------------
2795
2796 wxBorder wxWindowBase::GetBorder(long flags) const
2797 {
2798     wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2799     if ( border == wxBORDER_DEFAULT )
2800     {
2801         border = GetDefaultBorder();
2802     }
2803     else if ( border == wxBORDER_THEME )
2804     {
2805         border = GetDefaultBorderForControl();
2806     }
2807
2808     return border;
2809 }
2810
2811 wxBorder wxWindowBase::GetDefaultBorder() const
2812 {
2813     return wxBORDER_NONE;
2814 }
2815
2816 // ----------------------------------------------------------------------------
2817 // hit testing
2818 // ----------------------------------------------------------------------------
2819
2820 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2821 {
2822     // here we just check if the point is inside the window or not
2823
2824     // check the top and left border first
2825     bool outside = x < 0 || y < 0;
2826     if ( !outside )
2827     {
2828         // check the right and bottom borders too
2829         wxSize size = GetSize();
2830         outside = x >= size.x || y >= size.y;
2831     }
2832
2833     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2834 }
2835
2836 // ----------------------------------------------------------------------------
2837 // mouse capture
2838 // ----------------------------------------------------------------------------
2839
2840 struct WXDLLEXPORT wxWindowNext
2841 {
2842     wxWindow *win;
2843     wxWindowNext *next;
2844 } *wxWindowBase::ms_winCaptureNext = NULL;
2845 wxWindow *wxWindowBase::ms_winCaptureCurrent = NULL;
2846 bool wxWindowBase::ms_winCaptureChanging = false;
2847
2848 void wxWindowBase::CaptureMouse()
2849 {
2850     wxLogTrace(wxT("mousecapture"), wxT("CaptureMouse(%p)"), static_cast<void*>(this));
2851
2852     wxASSERT_MSG( !ms_winCaptureChanging, wxT("recursive CaptureMouse call?") );
2853
2854     ms_winCaptureChanging = true;
2855
2856     wxWindow *winOld = GetCapture();
2857     if ( winOld )
2858     {
2859         ((wxWindowBase*) winOld)->DoReleaseMouse();
2860
2861         // save it on stack
2862         wxWindowNext *item = new wxWindowNext;
2863         item->win = winOld;
2864         item->next = ms_winCaptureNext;
2865         ms_winCaptureNext = item;
2866     }
2867     //else: no mouse capture to save
2868
2869     DoCaptureMouse();
2870     ms_winCaptureCurrent = (wxWindow*)this;
2871
2872     ms_winCaptureChanging = false;
2873 }
2874
2875 void wxWindowBase::ReleaseMouse()
2876 {
2877     wxLogTrace(wxT("mousecapture"), wxT("ReleaseMouse(%p)"), static_cast<void*>(this));
2878
2879     wxASSERT_MSG( !ms_winCaptureChanging, wxT("recursive ReleaseMouse call?") );
2880
2881     wxASSERT_MSG( GetCapture() == this,
2882                   "attempt to release mouse, but this window hasn't captured it" );
2883     wxASSERT_MSG( ms_winCaptureCurrent == this,
2884                   "attempt to release mouse, but this window hasn't captured it" );
2885
2886     ms_winCaptureChanging = true;
2887
2888     DoReleaseMouse();
2889     ms_winCaptureCurrent = NULL;
2890
2891     if ( ms_winCaptureNext )
2892     {
2893         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2894         ms_winCaptureCurrent = ms_winCaptureNext->win;
2895
2896         wxWindowNext *item = ms_winCaptureNext;
2897         ms_winCaptureNext = item->next;
2898         delete item;
2899     }
2900     //else: stack is empty, no previous capture
2901
2902     ms_winCaptureChanging = false;
2903
2904     wxLogTrace(wxT("mousecapture"),
2905         (const wxChar *) wxT("After ReleaseMouse() mouse is captured by %p"),
2906         static_cast<void*>(GetCapture()));
2907 }
2908
2909 static void DoNotifyWindowAboutCaptureLost(wxWindow *win)
2910 {
2911     wxMouseCaptureLostEvent event(win->GetId());
2912     event.SetEventObject(win);
2913     if ( !win->GetEventHandler()->ProcessEvent(event) )
2914     {
2915         // windows must handle this event, otherwise the app wouldn't behave
2916         // correctly if it loses capture unexpectedly; see the discussion here:
2917         // http://sourceforge.net/tracker/index.php?func=detail&aid=1153662&group_id=9863&atid=109863
2918         // http://article.gmane.org/gmane.comp.lib.wxwidgets.devel/82376
2919         wxFAIL_MSG( wxT("window that captured the mouse didn't process wxEVT_MOUSE_CAPTURE_LOST") );
2920     }
2921 }
2922
2923 /* static */
2924 void wxWindowBase::NotifyCaptureLost()
2925 {
2926     // don't do anything if capture lost was expected, i.e. resulted from
2927     // a wx call to ReleaseMouse or CaptureMouse:
2928     if ( ms_winCaptureChanging )
2929         return;
2930
2931     // if the capture was lost unexpectedly, notify every window that has
2932     // capture (on stack or current) about it and clear the stack:
2933
2934     if ( ms_winCaptureCurrent )
2935     {
2936         DoNotifyWindowAboutCaptureLost(ms_winCaptureCurrent);
2937         ms_winCaptureCurrent = NULL;
2938     }
2939
2940     while ( ms_winCaptureNext )
2941     {
2942         wxWindowNext *item = ms_winCaptureNext;
2943         ms_winCaptureNext = item->next;
2944
2945         DoNotifyWindowAboutCaptureLost(item->win);
2946
2947         delete item;
2948     }
2949 }
2950
2951 #if wxUSE_HOTKEY
2952
2953 bool
2954 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2955                              int WXUNUSED(modifiers),
2956                              int WXUNUSED(keycode))
2957 {
2958     // not implemented
2959     return false;
2960 }
2961
2962 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2963 {
2964     // not implemented
2965     return false;
2966 }
2967
2968 #endif // wxUSE_HOTKEY
2969
2970 // ----------------------------------------------------------------------------
2971 // event processing
2972 // ----------------------------------------------------------------------------
2973
2974 bool wxWindowBase::TryBefore(wxEvent& event)
2975 {
2976 #if wxUSE_VALIDATORS
2977     // Can only use the validator of the window which
2978     // is receiving the event
2979     if ( event.GetEventObject() == this )
2980     {
2981         wxValidator * const validator = GetValidator();
2982         if ( validator && validator->ProcessEventLocally(event) )
2983         {
2984             return true;
2985         }
2986     }
2987 #endif // wxUSE_VALIDATORS
2988
2989     return wxEvtHandler::TryBefore(event);
2990 }
2991
2992 bool wxWindowBase::TryAfter(wxEvent& event)
2993 {
2994     // carry on up the parent-child hierarchy if the propagation count hasn't
2995     // reached zero yet
2996     if ( event.ShouldPropagate() )
2997     {
2998         // honour the requests to stop propagation at this window: this is
2999         // used by the dialogs, for example, to prevent processing the events
3000         // from the dialog controls in the parent frame which rarely, if ever,
3001         // makes sense
3002         if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
3003         {
3004             wxWindow *parent = GetParent();
3005             if ( parent && !parent->IsBeingDeleted() )
3006             {
3007                 wxPropagateOnce propagateOnce(event);
3008
3009                 return parent->GetEventHandler()->ProcessEvent(event);
3010             }
3011         }
3012     }
3013
3014     return wxEvtHandler::TryAfter(event);
3015 }
3016
3017 // ----------------------------------------------------------------------------
3018 // window relationships
3019 // ----------------------------------------------------------------------------
3020
3021 wxWindow *wxWindowBase::DoGetSibling(WindowOrder order) const
3022 {
3023     wxCHECK_MSG( GetParent(), NULL,
3024                     wxT("GetPrev/NextSibling() don't work for TLWs!") );
3025
3026     wxWindowList& siblings = GetParent()->GetChildren();
3027     wxWindowList::compatibility_iterator i = siblings.Find((wxWindow *)this);
3028     wxCHECK_MSG( i, NULL, wxT("window not a child of its parent?") );
3029
3030     if ( order == OrderBefore )
3031         i = i->GetPrevious();
3032     else // OrderAfter
3033         i = i->GetNext();
3034
3035     return i ? i->GetData() : NULL;
3036 }
3037
3038 // ----------------------------------------------------------------------------
3039 // keyboard navigation
3040 // ----------------------------------------------------------------------------
3041
3042 // Navigates in the specified direction inside this window
3043 bool wxWindowBase::DoNavigateIn(int flags)
3044 {
3045 #ifdef wxHAS_NATIVE_TAB_TRAVERSAL
3046     // native code doesn't process our wxNavigationKeyEvents anyhow
3047     wxUnusedVar(flags);
3048     return false;
3049 #else // !wxHAS_NATIVE_TAB_TRAVERSAL
3050     wxNavigationKeyEvent eventNav;
3051     wxWindow *focused = FindFocus();
3052     eventNav.SetCurrentFocus(focused);
3053     eventNav.SetEventObject(focused);
3054     eventNav.SetFlags(flags);
3055     return GetEventHandler()->ProcessEvent(eventNav);
3056 #endif // wxHAS_NATIVE_TAB_TRAVERSAL/!wxHAS_NATIVE_TAB_TRAVERSAL
3057 }
3058
3059 bool wxWindowBase::HandleAsNavigationKey(const wxKeyEvent& event)
3060 {
3061     if ( event.GetKeyCode() != WXK_TAB )
3062         return false;
3063
3064     int flags = wxNavigationKeyEvent::FromTab;
3065
3066     if ( event.ShiftDown() )
3067         flags |= wxNavigationKeyEvent::IsBackward;
3068     else
3069         flags |= wxNavigationKeyEvent::IsForward;
3070
3071     if ( event.ControlDown() )
3072         flags |= wxNavigationKeyEvent::WinChange;
3073
3074     Navigate(flags);
3075     return true;
3076 }
3077
3078 void wxWindowBase::DoMoveInTabOrder(wxWindow *win, WindowOrder move)
3079 {
3080     // check that we're not a top level window
3081     wxCHECK_RET( GetParent(),
3082                     wxT("MoveBefore/AfterInTabOrder() don't work for TLWs!") );
3083
3084     // detect the special case when we have nothing to do anyhow and when the
3085     // code below wouldn't work
3086     if ( win == this )
3087         return;
3088
3089     // find the target window in the siblings list
3090     wxWindowList& siblings = GetParent()->GetChildren();
3091     wxWindowList::compatibility_iterator i = siblings.Find(win);
3092     wxCHECK_RET( i, wxT("MoveBefore/AfterInTabOrder(): win is not a sibling") );
3093
3094     // unfortunately, when wxUSE_STL == 1 DetachNode() is not implemented so we
3095     // can't just move the node around
3096     wxWindow *self = (wxWindow *)this;
3097     siblings.DeleteObject(self);
3098     if ( move == OrderAfter )
3099     {
3100         i = i->GetNext();
3101     }
3102
3103     if ( i )
3104     {
3105         siblings.Insert(i, self);
3106     }
3107     else // OrderAfter and win was the last sibling
3108     {
3109         siblings.Append(self);
3110     }
3111 }
3112
3113 // ----------------------------------------------------------------------------
3114 // focus handling
3115 // ----------------------------------------------------------------------------
3116
3117 /*static*/ wxWindow* wxWindowBase::FindFocus()
3118 {
3119     wxWindowBase *win = DoFindFocus();
3120     return win ? win->GetMainWindowOfCompositeControl() : NULL;
3121 }
3122
3123 bool wxWindowBase::HasFocus() const
3124 {
3125     wxWindowBase *win = DoFindFocus();
3126     return win == this ||
3127            win == wxConstCast(this, wxWindowBase)->GetMainWindowOfCompositeControl();
3128 }
3129
3130 // ----------------------------------------------------------------------------
3131 // drag and drop
3132 // ----------------------------------------------------------------------------
3133
3134 #if wxUSE_DRAG_AND_DROP && !defined(__WXMSW__)
3135
3136 namespace
3137 {
3138
3139 class DragAcceptFilesTarget : public wxFileDropTarget
3140 {
3141 public:
3142     DragAcceptFilesTarget(wxWindowBase *win) : m_win(win) {}
3143
3144     virtual bool OnDropFiles(wxCoord x, wxCoord y,
3145                              const wxArrayString& filenames)
3146     {
3147         wxDropFilesEvent event(wxEVT_DROP_FILES,
3148                                filenames.size(),
3149                                wxCArrayString(filenames).Release());
3150         event.SetEventObject(m_win);
3151         event.m_pos.x = x;
3152         event.m_pos.y = y;
3153
3154         return m_win->HandleWindowEvent(event);
3155     }
3156
3157 private:
3158     wxWindowBase * const m_win;
3159
3160     wxDECLARE_NO_COPY_CLASS(DragAcceptFilesTarget);
3161 };
3162
3163
3164 } // anonymous namespace
3165
3166 // Generic version of DragAcceptFiles(). It works by installing a simple
3167 // wxFileDropTarget-to-EVT_DROP_FILES adaptor and therefore cannot be used
3168 // together with explicit SetDropTarget() calls.
3169 void wxWindowBase::DragAcceptFiles(bool accept)
3170 {
3171     if ( accept )
3172     {
3173         wxASSERT_MSG( !GetDropTarget(),
3174                       "cannot use DragAcceptFiles() and SetDropTarget() together" );
3175         SetDropTarget(new DragAcceptFilesTarget(this));
3176     }
3177     else
3178     {
3179         SetDropTarget(NULL);
3180     }
3181 }
3182
3183 #endif // wxUSE_DRAG_AND_DROP && !defined(__WXMSW__)
3184
3185 // ----------------------------------------------------------------------------
3186 // global functions
3187 // ----------------------------------------------------------------------------
3188
3189 wxWindow* wxGetTopLevelParent(wxWindow *win)
3190 {
3191     while ( win && !win->IsTopLevel() )
3192          win = win->GetParent();
3193
3194     return win;
3195 }
3196
3197 #if wxUSE_ACCESSIBILITY
3198 // ----------------------------------------------------------------------------
3199 // accessible object for windows
3200 // ----------------------------------------------------------------------------
3201
3202 // Can return either a child object, or an integer
3203 // representing the child element, starting from 1.
3204 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
3205 {
3206     wxASSERT( GetWindow() != NULL );
3207     if (!GetWindow())
3208         return wxACC_FAIL;
3209
3210     return wxACC_NOT_IMPLEMENTED;
3211 }
3212
3213 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
3214 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
3215 {
3216     wxASSERT( GetWindow() != NULL );
3217     if (!GetWindow())
3218         return wxACC_FAIL;
3219
3220     wxWindow* win = NULL;
3221     if (elementId == 0)
3222     {
3223         win = GetWindow();
3224     }
3225     else
3226     {
3227         if (elementId <= (int) GetWindow()->GetChildren().GetCount())
3228         {
3229             win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
3230         }
3231         else
3232             return wxACC_FAIL;
3233     }
3234     if (win)
3235     {
3236         rect = win->GetRect();
3237         if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
3238             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
3239         return wxACC_OK;
3240     }
3241
3242     return wxACC_NOT_IMPLEMENTED;
3243 }
3244
3245 // Navigates from fromId to toId/toObject.
3246 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
3247                              int* WXUNUSED(toId), wxAccessible** toObject)
3248 {
3249     wxASSERT( GetWindow() != NULL );
3250     if (!GetWindow())
3251         return wxACC_FAIL;
3252
3253     switch (navDir)
3254     {
3255     case wxNAVDIR_FIRSTCHILD:
3256         {
3257             if (GetWindow()->GetChildren().GetCount() == 0)
3258                 return wxACC_FALSE;
3259             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
3260             *toObject = childWindow->GetOrCreateAccessible();
3261
3262             return wxACC_OK;
3263         }
3264     case wxNAVDIR_LASTCHILD:
3265         {
3266             if (GetWindow()->GetChildren().GetCount() == 0)
3267                 return wxACC_FALSE;
3268             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
3269             *toObject = childWindow->GetOrCreateAccessible();
3270
3271             return wxACC_OK;
3272         }
3273     case wxNAVDIR_RIGHT:
3274     case wxNAVDIR_DOWN:
3275     case wxNAVDIR_NEXT:
3276         {
3277             wxWindowList::compatibility_iterator node =
3278                 wxWindowList::compatibility_iterator();
3279             if (fromId == 0)
3280             {
3281                 // Can't navigate to sibling of this window
3282                 // if we're a top-level window.
3283                 if (!GetWindow()->GetParent())
3284                     return wxACC_NOT_IMPLEMENTED;
3285
3286                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
3287             }
3288             else
3289             {
3290                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
3291                     node = GetWindow()->GetChildren().Item(fromId-1);
3292             }
3293
3294             if (node && node->GetNext())
3295             {
3296                 wxWindow* nextWindow = node->GetNext()->GetData();
3297                 *toObject = nextWindow->GetOrCreateAccessible();
3298                 return wxACC_OK;
3299             }
3300             else
3301                 return wxACC_FALSE;
3302         }
3303     case wxNAVDIR_LEFT:
3304     case wxNAVDIR_UP:
3305     case wxNAVDIR_PREVIOUS:
3306         {
3307             wxWindowList::compatibility_iterator node =
3308                 wxWindowList::compatibility_iterator();
3309             if (fromId == 0)
3310             {
3311                 // Can't navigate to sibling of this window
3312                 // if we're a top-level window.
3313                 if (!GetWindow()->GetParent())
3314                     return wxACC_NOT_IMPLEMENTED;
3315
3316                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
3317             }
3318             else
3319             {
3320                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
3321                     node = GetWindow()->GetChildren().Item(fromId-1);
3322             }
3323
3324             if (node && node->GetPrevious())
3325             {
3326                 wxWindow* previousWindow = node->GetPrevious()->GetData();
3327                 *toObject = previousWindow->GetOrCreateAccessible();
3328                 return wxACC_OK;
3329             }
3330             else
3331                 return wxACC_FALSE;
3332         }
3333     }
3334
3335     return wxACC_NOT_IMPLEMENTED;
3336 }
3337
3338 // Gets the name of the specified object.
3339 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
3340 {
3341     wxASSERT( GetWindow() != NULL );
3342     if (!GetWindow())
3343         return wxACC_FAIL;
3344
3345     wxString title;
3346
3347     // If a child, leave wxWidgets to call the function on the actual
3348     // child object.
3349     if (childId > 0)
3350         return wxACC_NOT_IMPLEMENTED;
3351
3352     // This will eventually be replaced by specialised
3353     // accessible classes, one for each kind of wxWidgets
3354     // control or window.
3355 #if wxUSE_BUTTON
3356     if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
3357         title = ((wxButton*) GetWindow())->GetLabel();
3358     else
3359 #endif
3360         title = GetWindow()->GetName();
3361
3362     if (!title.empty())
3363     {
3364         *name = title;
3365         return wxACC_OK;
3366     }
3367     else
3368         return wxACC_NOT_IMPLEMENTED;
3369 }
3370
3371 // Gets the number of children.
3372 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
3373 {
3374     wxASSERT( GetWindow() != NULL );
3375     if (!GetWindow())
3376         return wxACC_FAIL;
3377
3378     *childId = (int) GetWindow()->GetChildren().GetCount();
3379     return wxACC_OK;
3380 }
3381
3382 // Gets the specified child (starting from 1).
3383 // If *child is NULL and return value is wxACC_OK,
3384 // this means that the child is a simple element and
3385 // not an accessible object.
3386 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
3387 {
3388     wxASSERT( GetWindow() != NULL );
3389     if (!GetWindow())
3390         return wxACC_FAIL;
3391
3392     if (childId == 0)
3393     {
3394         *child = this;
3395         return wxACC_OK;
3396     }
3397
3398     if (childId > (int) GetWindow()->GetChildren().GetCount())
3399         return wxACC_FAIL;
3400
3401     wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
3402     *child = childWindow->GetOrCreateAccessible();
3403     if (*child)
3404         return wxACC_OK;
3405     else
3406         return wxACC_FAIL;
3407 }
3408
3409 // Gets the parent, or NULL.
3410 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
3411 {
3412     wxASSERT( GetWindow() != NULL );
3413     if (!GetWindow())
3414         return wxACC_FAIL;
3415
3416     wxWindow* parentWindow = GetWindow()->GetParent();
3417     if (!parentWindow)
3418     {
3419         *parent = NULL;
3420         return wxACC_OK;
3421     }
3422     else
3423     {
3424         *parent = parentWindow->GetOrCreateAccessible();
3425         if (*parent)
3426             return wxACC_OK;
3427         else
3428             return wxACC_FAIL;
3429     }
3430 }
3431
3432 // Performs the default action. childId is 0 (the action for this object)
3433 // or > 0 (the action for a child).
3434 // Return wxACC_NOT_SUPPORTED if there is no default action for this
3435 // window (e.g. an edit control).
3436 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
3437 {
3438     wxASSERT( GetWindow() != NULL );
3439     if (!GetWindow())
3440         return wxACC_FAIL;
3441
3442     return wxACC_NOT_IMPLEMENTED;
3443 }
3444
3445 // Gets the default action for this object (0) or > 0 (the action for a child).
3446 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
3447 // string if there is no action.
3448 // The retrieved string describes the action that is performed on an object,
3449 // not what the object does as a result. For example, a toolbar button that prints
3450 // a document has a default action of "Press" rather than "Prints the current document."
3451 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
3452 {
3453     wxASSERT( GetWindow() != NULL );
3454     if (!GetWindow())
3455         return wxACC_FAIL;
3456
3457     return wxACC_NOT_IMPLEMENTED;
3458 }
3459
3460 // Returns the description for this object or a child.
3461 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
3462 {
3463     wxASSERT( GetWindow() != NULL );
3464     if (!GetWindow())
3465         return wxACC_FAIL;
3466
3467     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3468     if (!ht.empty())
3469     {
3470         *description = ht;
3471         return wxACC_OK;
3472     }
3473     return wxACC_NOT_IMPLEMENTED;
3474 }
3475
3476 // Returns help text for this object or a child, similar to tooltip text.
3477 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
3478 {
3479     wxASSERT( GetWindow() != NULL );
3480     if (!GetWindow())
3481         return wxACC_FAIL;
3482
3483     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3484     if (!ht.empty())
3485     {
3486         *helpText = ht;
3487         return wxACC_OK;
3488     }
3489     return wxACC_NOT_IMPLEMENTED;
3490 }
3491
3492 // Returns the keyboard shortcut for this object or child.
3493 // Return e.g. ALT+K
3494 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
3495 {
3496     wxASSERT( GetWindow() != NULL );
3497     if (!GetWindow())
3498         return wxACC_FAIL;
3499
3500     return wxACC_NOT_IMPLEMENTED;
3501 }
3502
3503 // Returns a role constant.
3504 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
3505 {
3506     wxASSERT( GetWindow() != NULL );
3507     if (!GetWindow())
3508         return wxACC_FAIL;
3509
3510     // If a child, leave wxWidgets to call the function on the actual
3511     // child object.
3512     if (childId > 0)
3513         return wxACC_NOT_IMPLEMENTED;
3514
3515     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3516         return wxACC_NOT_IMPLEMENTED;
3517 #if wxUSE_STATUSBAR
3518     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3519         return wxACC_NOT_IMPLEMENTED;
3520 #endif
3521 #if wxUSE_TOOLBAR
3522     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3523         return wxACC_NOT_IMPLEMENTED;
3524 #endif
3525
3526     //*role = wxROLE_SYSTEM_CLIENT;
3527     *role = wxROLE_SYSTEM_CLIENT;
3528     return wxACC_OK;
3529
3530     #if 0
3531     return wxACC_NOT_IMPLEMENTED;
3532     #endif
3533 }
3534
3535 // Returns a state constant.
3536 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
3537 {
3538     wxASSERT( GetWindow() != NULL );
3539     if (!GetWindow())
3540         return wxACC_FAIL;
3541
3542     // If a child, leave wxWidgets to call the function on the actual
3543     // child object.
3544     if (childId > 0)
3545         return wxACC_NOT_IMPLEMENTED;
3546
3547     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3548         return wxACC_NOT_IMPLEMENTED;
3549
3550 #if wxUSE_STATUSBAR
3551     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3552         return wxACC_NOT_IMPLEMENTED;
3553 #endif
3554 #if wxUSE_TOOLBAR
3555     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3556         return wxACC_NOT_IMPLEMENTED;
3557 #endif
3558
3559     *state = 0;
3560     return wxACC_OK;
3561
3562     #if 0
3563     return wxACC_NOT_IMPLEMENTED;
3564     #endif
3565 }
3566
3567 // Returns a localized string representing the value for the object
3568 // or child.
3569 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
3570 {
3571     wxASSERT( GetWindow() != NULL );
3572     if (!GetWindow())
3573         return wxACC_FAIL;
3574
3575     return wxACC_NOT_IMPLEMENTED;
3576 }
3577
3578 // Selects the object or child.
3579 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
3580 {
3581     wxASSERT( GetWindow() != NULL );
3582     if (!GetWindow())
3583         return wxACC_FAIL;
3584
3585     return wxACC_NOT_IMPLEMENTED;
3586 }
3587
3588 // Gets the window with the keyboard focus.
3589 // If childId is 0 and child is NULL, no object in
3590 // this subhierarchy has the focus.
3591 // If this object has the focus, child should be 'this'.
3592 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
3593 {
3594     wxASSERT( GetWindow() != NULL );
3595     if (!GetWindow())
3596         return wxACC_FAIL;
3597
3598     return wxACC_NOT_IMPLEMENTED;
3599 }
3600
3601 #if wxUSE_VARIANT
3602 // Gets a variant representing the selected children
3603 // of this object.
3604 // Acceptable values:
3605 // - a null variant (IsNull() returns true)
3606 // - a list variant (GetType() == wxT("list")
3607 // - an integer representing the selected child element,
3608 //   or 0 if this object is selected (GetType() == wxT("long")
3609 // - a "void*" pointer to a wxAccessible child object
3610 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
3611 {
3612     wxASSERT( GetWindow() != NULL );
3613     if (!GetWindow())
3614         return wxACC_FAIL;
3615
3616     return wxACC_NOT_IMPLEMENTED;
3617 }
3618 #endif // wxUSE_VARIANT
3619
3620 #endif // wxUSE_ACCESSIBILITY
3621
3622 // ----------------------------------------------------------------------------
3623 // RTL support
3624 // ----------------------------------------------------------------------------
3625
3626 wxCoord
3627 wxWindowBase::AdjustForLayoutDirection(wxCoord x,
3628                                        wxCoord width,
3629                                        wxCoord widthTotal) const
3630 {
3631     if ( GetLayoutDirection() == wxLayout_RightToLeft )
3632     {
3633         x = widthTotal - x - width;
3634     }
3635
3636     return x;
3637 }
3638
3639