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
  77 // Windows List
  78 WXDLLIMPEXP_DATA_CORE(wxWindowList) wxTopLevelWindows;
  79
  80 // globals
  81 #if wxUSE_MENUS
  82 wxMenu *wxCurrentPopupMenu = NULL;
  83 #endif // wxUSE_MENUS
  84
  85 // ----------------------------------------------------------------------------
  86 // static data
  87 // ----------------------------------------------------------------------------
  88
  89
  90 IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
  91
  92 // ----------------------------------------------------------------------------
  93 // event table
  94 // ----------------------------------------------------------------------------
  95
  96 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
  97     EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
  98     EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
  99     EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
 100
 101 #if wxUSE_HELP
 102     EVT_HELP(wxID_ANY, wxWindowBase::OnHelp)
 103 #endif // wxUSE_HELP
 104
 105     EVT_SIZE(wxWindowBase::InternalOnSize)
 106 END_EVENT_TABLE()
 107
 108 // ============================================================================
 109 // implementation of the common functionality of the wxWindow class
 110 // ============================================================================
 111
 112 // ----------------------------------------------------------------------------
 113 // initialization
 114 // ----------------------------------------------------------------------------
 115
 116 // the default initialization
 117 wxWindowBase::wxWindowBase()
 118 {
 119     // no window yet, no parent nor children
 120     m_parent = NULL;
 121     m_windowId = wxID_ANY;
 122
 123     // no constraints on the minimal window size
 124     m_minWidth =
 125     m_maxWidth = wxDefaultCoord;
 126     m_minHeight =
 127     m_maxHeight = wxDefaultCoord;
 128
 129     // invalidiated cache value
 130     m_bestSizeCache = wxDefaultSize;
 131
 132     // window are created enabled and visible by default
 133     m_isShown =
 134     m_isEnabled = true;
 135
 136     // the default event handler is just this window
 137     m_eventHandler = this;
 138
 139 #if wxUSE_VALIDATORS
 140     // no validator
 141     m_windowValidator = NULL;
 142 #endif // wxUSE_VALIDATORS
 143
 144     // the colours/fonts are default for now, so leave m_font,
 145     // m_backgroundColour and m_foregroundColour uninitialized and set those
 146     m_hasBgCol =
 147     m_hasFgCol =
 148     m_hasFont = false;
 149     m_inheritBgCol =
 150     m_inheritFgCol =
 151     m_inheritFont = false;
 152
 153     // no style bits
 154     m_exStyle =
 155     m_windowStyle = 0;
 156
 157     m_backgroundStyle = wxBG_STYLE_ERASE;
 158
 159 #if wxUSE_CONSTRAINTS
 160     // no constraints whatsoever
 161     m_constraints = NULL;
 162     m_constraintsInvolvedIn = NULL;
 163 #endif // wxUSE_CONSTRAINTS
 164
 165     m_windowSizer = NULL;
 166     m_containingSizer = NULL;
 167     m_autoLayout = false;
 168
 169 #if wxUSE_DRAG_AND_DROP
 170     m_dropTarget = NULL;
 171 #endif // wxUSE_DRAG_AND_DROP
 172
 173 #if wxUSE_TOOLTIPS
 174     m_tooltip = NULL;
 175 #endif // wxUSE_TOOLTIPS
 176
 177 #if wxUSE_CARET
 178     m_caret = NULL;
 179 #endif // wxUSE_CARET
 180
 181 #if wxUSE_PALETTE
 182     m_hasCustomPalette = false;
 183 #endif // wxUSE_PALETTE
 184
 185 #if wxUSE_ACCESSIBILITY
 186     m_accessible = NULL;
 187 #endif
 188
 189     m_virtualSize = wxDefaultSize;
 190
 191     m_scrollHelper = NULL;
 192
 193     m_windowVariant = wxWINDOW_VARIANT_NORMAL;
 194 #if wxUSE_SYSTEM_OPTIONS
 195     if ( wxSystemOptions::HasOption(wxWINDOW_DEFAULT_VARIANT) )
 196     {
 197        m_windowVariant = (wxWindowVariant) wxSystemOptions::GetOptionInt( wxWINDOW_DEFAULT_VARIANT ) ;
 198     }
 199 #endif
 200
 201     // Whether we're using the current theme for this window (wxGTK only for now)
 202     m_themeEnabled = false;
 203
 204     // This is set to true by SendDestroyEvent() which should be called by the
 205     // most derived class to ensure that the destruction event is sent as soon
 206     // as possible to allow its handlers to still see the undestroyed window
 207     m_isBeingDeleted = false;
 208
 209     m_freezeCount = 0;
 210 }
 211
 212 // common part of window creation process
 213 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 214                               wxWindowID id,
 215                               const wxPoint& WXUNUSED(pos),
 216                               const wxSize& size,
 217                               long style,
 218                               const wxString& name)
 219 {
 220     // ids are limited to 16 bits under MSW so if you care about portability,
 221     // it's not a good idea to use ids out of this range (and negative ids are
 222     // reserved for wxWidgets own usage)
 223     wxASSERT_MSG( id == wxID_ANY || (id >= 0 && id < 32767) ||
 224                   (id >= wxID_AUTO_LOWEST && id <= wxID_AUTO_HIGHEST),
 225                   wxT("invalid id value") );
 226
 227     // generate a new id if the user doesn't care about it
 228     if ( id == wxID_ANY )
 229     {
 230         m_windowId = NewControlId();
 231     }
 232     else // valid id specified
 233     {
 234         m_windowId = id;
 235     }
 236
 237     // don't use SetWindowStyleFlag() here, this function should only be called
 238     // to change the flag after creation as it tries to reflect the changes in
 239     // flags by updating the window dynamically and we don't need this here
 240     m_windowStyle = style;
 241
 242     // assume the user doesn't want this window to shrink beneath its initial
 243     // size, this worked like this in wxWidgets 2.8 and before and generally
 244     // often makes sense for child windows (for top level ones it definitely
 245     // does not as the user should be able to resize the window)
 246     //
 247     // note that we can't use IsTopLevel() from ctor
 248     if ( size != wxDefaultSize && !wxTopLevelWindows.Find((wxWindow *)this) )
 249         SetMinSize(size);
 250
 251     SetName(name);
 252     SetParent(parent);
 253
 254     return true;
 255 }
 256
 257 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 258                               wxWindowID id,
 259                               const wxPoint& pos,
 260                               const wxSize& size,
 261                               long style,
 262                               const wxValidator& wxVALIDATOR_PARAM(validator),
 263                               const wxString& name)
 264 {
 265     if ( !CreateBase(parent, id, pos, size, style, name) )
 266         return false;
 267
 268 #if wxUSE_VALIDATORS
 269     SetValidator(validator);
 270 #endif // wxUSE_VALIDATORS
 271
 272     // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
 273     // have it too - like this it's possible to set it only in the top level
 274     // dialog/frame and all children will inherit it by defult
 275     if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
 276     {
 277         SetExtraStyle(GetExtraStyle() | wxWS_EX_VALIDATE_RECURSIVELY);
 278     }
 279
 280     return true;
 281 }
 282
 283 bool wxWindowBase::ToggleWindowStyle(int flag)
 284 {
 285     wxASSERT_MSG( flag, wxT("flags with 0 value can't be toggled") );
 286
 287     bool rc;
 288     long style = GetWindowStyleFlag();
 289     if ( style & flag )
 290     {
 291         style &= ~flag;
 292         rc = false;
 293     }
 294     else // currently off
 295     {
 296         style |= flag;
 297         rc = true;
 298     }
 299
 300     SetWindowStyleFlag(style);
 301
 302     return rc;
 303 }
 304
 305 // ----------------------------------------------------------------------------
 306 // destruction
 307 // ----------------------------------------------------------------------------
 308
 309 // common clean up
 310 wxWindowBase::~wxWindowBase()
 311 {
 312     wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
 313
 314     // FIXME if these 2 cases result from programming errors in the user code
 315     //       we should probably assert here instead of silently fixing them
 316
 317     // Just in case the window has been Closed, but we're then deleting
 318     // immediately: don't leave dangling pointers.
 319     wxPendingDelete.DeleteObject(this);
 320
 321     // Just in case we've loaded a top-level window via LoadNativeDialog but
 322     // we weren't a dialog class
 323     wxTopLevelWindows.DeleteObject((wxWindow*)this);
 324
 325     // Any additional event handlers should be popped before the window is
 326     // deleted as otherwise the last handler will be left with a dangling
 327     // pointer to this window result in a difficult to diagnose crash later on.
 328     wxASSERT_MSG( GetEventHandler() == this,
 329                     wxT("any pushed event handlers must have been removed") );
 330
 331 #if wxUSE_MENUS
 332     // The associated popup menu can still be alive, disassociate from it in
 333     // this case
 334     if ( wxCurrentPopupMenu && wxCurrentPopupMenu->GetInvokingWindow() == this )
 335         wxCurrentPopupMenu->SetInvokingWindow(NULL);
 336 #endif // wxUSE_MENUS
 337
 338     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 339
 340     // notify the parent about this window destruction
 341     if ( m_parent )
 342         m_parent->RemoveChild(this);
 343
 344 #if wxUSE_CARET
 345     delete m_caret;
 346 #endif // wxUSE_CARET
 347
 348 #if wxUSE_VALIDATORS
 349     delete m_windowValidator;
 350 #endif // wxUSE_VALIDATORS
 351
 352 #if wxUSE_CONSTRAINTS
 353     // Have to delete constraints/sizer FIRST otherwise sizers may try to look
 354     // at deleted windows as they delete themselves.
 355     DeleteRelatedConstraints();
 356
 357     if ( m_constraints )
 358     {
 359         // This removes any dangling pointers to this window in other windows'
 360         // constraintsInvolvedIn lists.
 361         UnsetConstraints(m_constraints);
 362         delete m_constraints;
 363         m_constraints = NULL;
 364     }
 365 #endif // wxUSE_CONSTRAINTS
 366
 367     if ( m_containingSizer )
 368         m_containingSizer->Detach( (wxWindow*)this );
 369
 370     delete m_windowSizer;
 371
 372 #if wxUSE_DRAG_AND_DROP
 373     delete m_dropTarget;
 374 #endif // wxUSE_DRAG_AND_DROP
 375
 376 #if wxUSE_TOOLTIPS
 377     delete m_tooltip;
 378 #endif // wxUSE_TOOLTIPS
 379
 380 #if wxUSE_ACCESSIBILITY
 381     delete m_accessible;
 382 #endif
 383
 384 #if wxUSE_HELP
 385     // NB: this has to be called unconditionally, because we don't know
 386     //     whether this window has associated help text or not
 387     wxHelpProvider *helpProvider = wxHelpProvider::Get();
 388     if ( helpProvider )
 389         helpProvider->RemoveHelp(this);
 390 #endif
 391 }
 392
 393 bool wxWindowBase::IsBeingDeleted() const
 394 {
 395     return m_isBeingDeleted ||
 396             (!IsTopLevel() && m_parent && m_parent->IsBeingDeleted());
 397 }
 398
 399 void wxWindowBase::SendDestroyEvent()
 400 {
 401     if ( m_isBeingDeleted )
 402     {
 403         // we could have been already called from a more derived class dtor,
 404         // e.g. ~wxTLW calls us and so does ~wxWindow and the latter call
 405         // should be simply ignored
 406         return;
 407     }
 408
 409     m_isBeingDeleted = true;
 410
 411     wxWindowDestroyEvent event;
 412     event.SetEventObject(this);
 413     event.SetId(GetId());
 414     GetEventHandler()->ProcessEvent(event);
 415 }
 416
 417 bool wxWindowBase::Destroy()
 418 {
 419     SendDestroyEvent();
 420
 421     delete this;
 422
 423     return true;
 424 }
 425
 426 bool wxWindowBase::Close(bool force)
 427 {
 428     wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
 429     event.SetEventObject(this);
 430     event.SetCanVeto(!force);
 431
 432     // return false if window wasn't closed because the application vetoed the
 433     // close event
 434     return HandleWindowEvent(event) && !event.GetVeto();
 435 }
 436
 437 bool wxWindowBase::DestroyChildren()
 438 {
 439     wxWindowList::compatibility_iterator node;
 440     for ( ;; )
 441     {
 442         // we iterate until the list becomes empty
 443         node = GetChildren().GetFirst();
 444         if ( !node )
 445             break;
 446
 447         wxWindow *child = node->GetData();
 448
 449         // note that we really want to delete it immediately so don't call the
 450         // possible overridden Destroy() version which might not delete the
 451         // child immediately resulting in problems with our (top level) child
 452         // outliving its parent
 453         child->wxWindowBase::Destroy();
 454
 455         wxASSERT_MSG( !GetChildren().Find(child),
 456                       wxT("child didn't remove itself using RemoveChild()") );
 457     }
 458
 459     return true;
 460 }
 461
 462 // ----------------------------------------------------------------------------
 463 // size/position related methods
 464 // ----------------------------------------------------------------------------
 465
 466 // centre the window with respect to its parent in either (or both) directions
 467 void wxWindowBase::DoCentre(int dir)
 468 {
 469     wxCHECK_RET( !(dir & wxCENTRE_ON_SCREEN) && GetParent(),
 470                  wxT("this method only implements centering child windows") );
 471
 472     SetSize(GetRect().CentreIn(GetParent()->GetClientSize(), dir));
 473 }
 474
 475 // fits the window around the children
 476 void wxWindowBase::Fit()
 477 {
 478     if ( !GetChildren().empty() )
 479     {
 480         SetSize(GetBestSize());
 481     }
 482     //else: do nothing if we have no children
 483 }
 484
 485 // fits virtual size (ie. scrolled area etc.) around children
 486 void wxWindowBase::FitInside()
 487 {
 488     if ( GetChildren().GetCount() > 0 )
 489     {
 490         SetVirtualSize( GetBestVirtualSize() );
 491     }
 492 }
 493
 494 // On Mac, scrollbars are explicitly children.
 495 #if defined( __WXMAC__ ) && !defined(__WXUNIVERSAL__)
 496 static bool wxHasRealChildren(const wxWindowBase* win)
 497 {
 498     int realChildCount = 0;
 499
 500     for ( wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
 501           node;
 502           node = node->GetNext() )
 503     {
 504         wxWindow *win = node->GetData();
 505         if ( !win->IsTopLevel() && win->IsShown()
 506 #if wxUSE_SCROLLBAR
 507             && !win->IsKindOf(CLASSINFO(wxScrollBar))
 508 #endif
 509             )
 510             realChildCount ++;
 511     }
 512     return (realChildCount > 0);
 513 }
 514 #endif
 515
 516 void wxWindowBase::InvalidateBestSize()
 517 {
 518     m_bestSizeCache = wxDefaultSize;
 519
 520     // parent's best size calculation may depend on its children's
 521     // as long as child window we are in is not top level window itself
 522     // (because the TLW size is never resized automatically)
 523     // so let's invalidate it as well to be safe:
 524     if (m_parent && !IsTopLevel())
 525         m_parent->InvalidateBestSize();
 526 }
 527
 528 // return the size best suited for the current window
 529 wxSize wxWindowBase::DoGetBestSize() const
 530 {
 531     wxSize best;
 532
 533     if ( m_windowSizer )
 534     {
 535         best = m_windowSizer->GetMinSize();
 536     }
 537 #if wxUSE_CONSTRAINTS
 538     else if ( m_constraints )
 539     {
 540         wxConstCast(this, wxWindowBase)->SatisfyConstraints();
 541
 542         // our minimal acceptable size is such that all our windows fit inside
 543         int maxX = 0,
 544             maxY = 0;
 545
 546         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 547               node;
 548               node = node->GetNext() )
 549         {
 550             wxLayoutConstraints *c = node->GetData()->GetConstraints();
 551             if ( !c )
 552             {
 553                 // it's not normal that we have an unconstrained child, but
 554                 // what can we do about it?
 555                 continue;
 556             }
 557
 558             int x = c->right.GetValue(),
 559                 y = c->bottom.GetValue();
 560
 561             if ( x > maxX )
 562                 maxX = x;
 563
 564             if ( y > maxY )
 565                 maxY = y;
 566
 567             // TODO: we must calculate the overlaps somehow, otherwise we
 568             //       will never return a size bigger than the current one :-(
 569         }
 570
 571         best = wxSize(maxX, maxY);
 572     }
 573 #endif // wxUSE_CONSTRAINTS
 574     else if ( !GetChildren().empty()
 575 #if defined( __WXMAC__ ) && !defined(__WXUNIVERSAL__)
 576               && wxHasRealChildren(this)
 577 #endif
 578               )
 579     {
 580         // our minimal acceptable size is such that all our visible child
 581         // windows fit inside
 582         int maxX = 0,
 583             maxY = 0;
 584
 585         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 586               node;
 587               node = node->GetNext() )
 588         {
 589             wxWindow *win = node->GetData();
 590             if ( win->IsTopLevel()
 591                     || !win->IsShown()
 592 #if wxUSE_STATUSBAR
 593                         || wxDynamicCast(win, wxStatusBar)
 594 #endif // wxUSE_STATUSBAR
 595                )
 596             {
 597                 // dialogs and frames lie in different top level windows -
 598                 // don't deal with them here; as for the status bars, they
 599                 // don't lie in the client area at all
 600                 continue;
 601             }
 602
 603             int wx, wy, ww, wh;
 604             win->GetPosition(&wx, &wy);
 605
 606             // if the window hadn't been positioned yet, assume that it is in
 607             // the origin
 608             if ( wx == wxDefaultCoord )
 609                 wx = 0;
 610             if ( wy == wxDefaultCoord )
 611                 wy = 0;
 612
 613             win->GetSize(&ww, &wh);
 614             if ( wx + ww > maxX )
 615                 maxX = wx + ww;
 616             if ( wy + wh > maxY )
 617                 maxY = wy + wh;
 618         }
 619
 620         best = wxSize(maxX, maxY);
 621     }
 622     else // ! has children
 623     {
 624         wxSize size = GetMinSize();
 625         if ( !size.IsFullySpecified() )
 626         {
 627             // if the window doesn't define its best size we assume that it can
 628             // be arbitrarily small -- usually this is not the case, of course,
 629             // but we have no way to know what the limit is, it should really
 630             // override DoGetBestClientSize() itself to tell us
 631             size.SetDefaults(wxSize(1, 1));
 632         }
 633
 634         // return as-is, unadjusted by the client size difference.
 635         return size;
 636     }
 637
 638     // Add any difference between size and client size
 639     wxSize diff = GetSize() - GetClientSize();
 640     best.x += wxMax(0, diff.x);
 641     best.y += wxMax(0, diff.y);
 642
 643     return best;
 644 }
 645
 646 // helper of GetWindowBorderSize(): as many ports don't implement support for
 647 // wxSYS_BORDER/EDGE_X/Y metrics in their wxSystemSettings, use hard coded
 648 // fallbacks in this case
 649 static int wxGetMetricOrDefault(wxSystemMetric what, const wxWindowBase* win)
 650 {
 651     int rc = wxSystemSettings::GetMetric(
 652         what, static_cast<wxWindow*>(const_cast<wxWindowBase*>(win)));
 653     if ( rc == -1 )
 654     {
 655         switch ( what )
 656         {
 657             case wxSYS_BORDER_X:
 658             case wxSYS_BORDER_Y:
 659                 // 2D border is by default 1 pixel wide
 660                 rc = 1;
 661                 break;
 662
 663             case wxSYS_EDGE_X:
 664             case wxSYS_EDGE_Y:
 665                 // 3D borders are by default 2 pixels
 666                 rc = 2;
 667                 break;
 668
 669             default:
 670                 wxFAIL_MSG( wxT("unexpected wxGetMetricOrDefault() argument") );
 671                 rc = 0;
 672         }
 673     }
 674
 675     return rc;
 676 }
 677
 678 wxSize wxWindowBase::GetWindowBorderSize() const
 679 {
 680     wxSize size;
 681
 682     switch ( GetBorder() )
 683     {
 684         case wxBORDER_NONE:
 685             // nothing to do, size is already (0, 0)
 686             break;
 687
 688         case wxBORDER_SIMPLE:
 689         case wxBORDER_STATIC:
 690             size.x = wxGetMetricOrDefault(wxSYS_BORDER_X, this);
 691             size.y = wxGetMetricOrDefault(wxSYS_BORDER_Y, this);
 692             break;
 693
 694         case wxBORDER_SUNKEN:
 695         case wxBORDER_RAISED:
 696             size.x = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_X, this),
 697                            wxGetMetricOrDefault(wxSYS_BORDER_X, this));
 698             size.y = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_Y, this),
 699                            wxGetMetricOrDefault(wxSYS_BORDER_Y, this));
 700             break;
 701
 702         case wxBORDER_DOUBLE:
 703             size.x = wxGetMetricOrDefault(wxSYS_EDGE_X, this) +
 704                         wxGetMetricOrDefault(wxSYS_BORDER_X, this);
 705             size.y = wxGetMetricOrDefault(wxSYS_EDGE_Y, this) +
 706                         wxGetMetricOrDefault(wxSYS_BORDER_Y, this);
 707             break;
 708
 709         default:
 710             wxFAIL_MSG(wxT("Unknown border style."));
 711             break;
 712     }
 713
 714     // we have borders on both sides
 715     return size*2;
 716 }
 717
 718 wxSize wxWindowBase::GetEffectiveMinSize() const
 719 {
 720     // merge the best size with the min size, giving priority to the min size
 721     wxSize min = GetMinSize();
 722
 723     if (min.x == wxDefaultCoord || min.y == wxDefaultCoord)
 724     {
 725         wxSize best = GetBestSize();
 726         if (min.x == wxDefaultCoord) min.x =  best.x;
 727         if (min.y == wxDefaultCoord) min.y =  best.y;
 728     }
 729
 730     return min;
 731 }
 732
 733 wxSize wxWindowBase::DoGetBorderSize() const
 734 {
 735     // there is one case in which we can implement it for all ports easily:
 736     // do it as some classes used by both wxUniv and native ports (e.g.
 737     // wxGenericStaticText) do override DoGetBestClientSize() and so this
 738     // method must work for them and that ensures that it does, at least in
 739     // the default case)
 740     if ( GetBorder() == wxBORDER_NONE )
 741         return wxSize(0, 0);
 742
 743     wxFAIL_MSG( "must be overridden if called" );
 744
 745     return wxDefaultSize;
 746 }
 747
 748 wxSize wxWindowBase::GetBestSize() const
 749 {
 750     if ( !m_windowSizer && m_bestSizeCache.IsFullySpecified() )
 751         return m_bestSizeCache;
 752
 753     // call DoGetBestClientSize() first, if a derived class overrides it wants
 754     // it to be used
 755     wxSize size = DoGetBestClientSize();
 756     if ( size != wxDefaultSize )
 757     {
 758         size += DoGetBorderSize();
 759
 760         CacheBestSize(size);
 761         return size;
 762     }
 763
 764     return DoGetBestSize();
 765 }
 766
 767 void wxWindowBase::SetMinSize(const wxSize& minSize)
 768 {
 769     m_minWidth = minSize.x;
 770     m_minHeight = minSize.y;
 771 }
 772
 773 void wxWindowBase::SetMaxSize(const wxSize& maxSize)
 774 {
 775     m_maxWidth = maxSize.x;
 776     m_maxHeight = maxSize.y;
 777 }
 778
 779 void wxWindowBase::SetInitialSize(const wxSize& size)
 780 {
 781     // Set the min size to the size passed in.  This will usually either be
 782     // wxDefaultSize or the size passed to this window's ctor/Create function.
 783     SetMinSize(size);
 784
 785     // Merge the size with the best size if needed
 786     wxSize best = GetEffectiveMinSize();
 787
 788     // If the current size doesn't match then change it
 789     if (GetSize() != best)
 790         SetSize(best);
 791 }
 792
 793
 794 // by default the origin is not shifted
 795 wxPoint wxWindowBase::GetClientAreaOrigin() const
 796 {
 797     return wxPoint(0,0);
 798 }
 799
 800 wxSize wxWindowBase::ClientToWindowSize(const wxSize& size) const
 801 {
 802     const wxSize diff(GetSize() - GetClientSize());
 803
 804     return wxSize(size.x == -1 ? -1 : size.x + diff.x,
 805                   size.y == -1 ? -1 : size.y + diff.y);
 806 }
 807
 808 wxSize wxWindowBase::WindowToClientSize(const wxSize& size) const
 809 {
 810     const wxSize diff(GetSize() - GetClientSize());
 811
 812     return wxSize(size.x == -1 ? -1 : size.x - diff.x,
 813                   size.y == -1 ? -1 : size.y - diff.y);
 814 }
 815
 816 void wxWindowBase::SetWindowVariant( wxWindowVariant variant )
 817 {
 818     if ( m_windowVariant != variant )
 819     {
 820         m_windowVariant = variant;
 821
 822         DoSetWindowVariant(variant);
 823     }
 824 }
 825
 826 void wxWindowBase::DoSetWindowVariant( wxWindowVariant variant )
 827 {
 828     // adjust the font height to correspond to our new variant (notice that
 829     // we're only called if something really changed)
 830     wxFont font = GetFont();
 831     int size = font.GetPointSize();
 832     switch ( variant )
 833     {
 834         case wxWINDOW_VARIANT_NORMAL:
 835             break;
 836
 837         case wxWINDOW_VARIANT_SMALL:
 838             size *= 3;
 839             size /= 4;
 840             break;
 841
 842         case wxWINDOW_VARIANT_MINI:
 843             size *= 2;
 844             size /= 3;
 845             break;
 846
 847         case wxWINDOW_VARIANT_LARGE:
 848             size *= 5;
 849             size /= 4;
 850             break;
 851
 852         default:
 853             wxFAIL_MSG(wxT("unexpected window variant"));
 854             break;
 855     }
 856
 857     font.SetPointSize(size);
 858     SetFont(font);
 859 }
 860
 861 void wxWindowBase::DoSetSizeHints( int minW, int minH,
 862                                    int maxW, int maxH,
 863                                    int WXUNUSED(incW), int WXUNUSED(incH) )
 864 {
 865     wxCHECK_RET( (minW == wxDefaultCoord || maxW == wxDefaultCoord || minW <= maxW) &&
 866                     (minH == wxDefaultCoord || maxH == wxDefaultCoord || minH <= maxH),
 867                  wxT("min width/height must be less than max width/height!") );
 868
 869     m_minWidth = minW;
 870     m_maxWidth = maxW;
 871     m_minHeight = minH;
 872     m_maxHeight = maxH;
 873 }
 874
 875
 876 #if WXWIN_COMPATIBILITY_2_8
 877 void wxWindowBase::SetVirtualSizeHints(int WXUNUSED(minW), int WXUNUSED(minH),
 878                                        int WXUNUSED(maxW), int WXUNUSED(maxH))
 879 {
 880 }
 881
 882 void wxWindowBase::SetVirtualSizeHints(const wxSize& WXUNUSED(minsize),
 883                                        const wxSize& WXUNUSED(maxsize))
 884 {
 885 }
 886 #endif // WXWIN_COMPATIBILITY_2_8
 887
 888 void wxWindowBase::DoSetVirtualSize( int x, int y )
 889 {
 890     m_virtualSize = wxSize(x, y);
 891 }
 892
 893 wxSize wxWindowBase::DoGetVirtualSize() const
 894 {
 895     // we should use the entire client area so if it is greater than our
 896     // virtual size, expand it to fit (otherwise if the window is big enough we
 897     // wouldn't be using parts of it)
 898     wxSize size = GetClientSize();
 899     if ( m_virtualSize.x > size.x )
 900         size.x = m_virtualSize.x;
 901
 902     if ( m_virtualSize.y >= size.y )
 903         size.y = m_virtualSize.y;
 904
 905     return size;
 906 }
 907
 908 void wxWindowBase::DoGetScreenPosition(int *x, int *y) const
 909 {
 910     // screen position is the same as (0, 0) in client coords for non TLWs (and
 911     // TLWs override this method)
 912     if ( x )
 913         *x = 0;
 914     if ( y )
 915         *y = 0;
 916
 917     ClientToScreen(x, y);
 918 }
 919
 920 void wxWindowBase::SendSizeEvent(int flags)
 921 {
 922     wxSizeEvent event(GetSize(), GetId());
 923     event.SetEventObject(this);
 924     if ( flags & wxSEND_EVENT_POST )
 925         wxPostEvent(this, event);
 926     else
 927         HandleWindowEvent(event);
 928 }
 929
 930 void wxWindowBase::SendSizeEventToParent(int flags)
 931 {
 932     wxWindow * const parent = GetParent();
 933     if ( parent && !parent->IsBeingDeleted() )
 934         parent->SendSizeEvent(flags);
 935 }
 936
 937 bool wxWindowBase::HasScrollbar(int orient) const
 938 {
 939     // if scrolling in the given direction is disabled, we can't have the
 940     // corresponding scrollbar no matter what
 941     if ( !CanScroll(orient) )
 942         return false;
 943
 944     const wxSize sizeVirt = GetVirtualSize();
 945     const wxSize sizeClient = GetClientSize();
 946
 947     return orient == wxHORIZONTAL ? sizeVirt.x > sizeClient.x
 948                                   : sizeVirt.y > sizeClient.y;
 949 }
 950
 951 // ----------------------------------------------------------------------------
 952 // show/hide/enable/disable the window
 953 // ----------------------------------------------------------------------------
 954
 955 bool wxWindowBase::Show(bool show)
 956 {
 957     if ( show != m_isShown )
 958     {
 959         m_isShown = show;
 960
 961         return true;
 962     }
 963     else
 964     {
 965         return false;
 966     }
 967 }
 968
 969 bool wxWindowBase::IsEnabled() const
 970 {
 971     return IsThisEnabled() && (IsTopLevel() || !GetParent() || GetParent()->IsEnabled());
 972 }
 973
 974 void wxWindowBase::NotifyWindowOnEnableChange(bool enabled)
 975 {
 976 #ifndef wxHAS_NATIVE_ENABLED_MANAGEMENT
 977     DoEnable(enabled);
 978 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 979
 980     OnEnabled(enabled);
 981
 982     // If we are top-level then the logic doesn't apply - otherwise
 983     // showing a modal dialog would result in total greying out (and ungreying
 984     // out later) of everything which would be really ugly
 985     if ( IsTopLevel() )
 986         return;
 987
 988     for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 989           node;
 990           node = node->GetNext() )
 991     {
 992         wxWindowBase * const child = node->GetData();
 993         if ( !child->IsTopLevel() && child->IsThisEnabled() )
 994             child->NotifyWindowOnEnableChange(enabled);
 995     }
 996 }
 997
 998 bool wxWindowBase::Enable(bool enable)
 999 {
1000     if ( enable == IsThisEnabled() )
1001         return false;
1002
1003     m_isEnabled = enable;
1004
1005 #ifdef wxHAS_NATIVE_ENABLED_MANAGEMENT
1006     DoEnable(enable);
1007 #else // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
1008     wxWindowBase * const parent = GetParent();
1009     if( !IsTopLevel() && parent && !parent->IsEnabled() )
1010     {
1011         return true;
1012     }
1013 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
1014
1015     NotifyWindowOnEnableChange(enable);
1016
1017     return true;
1018 }
1019
1020 bool wxWindowBase::IsShownOnScreen() const
1021 {
1022     // A window is shown on screen if it itself is shown and so are all its
1023     // parents. But if a window is toplevel one, then its always visible on
1024     // screen if IsShown() returns true, even if it has a hidden parent.
1025     return IsShown() &&
1026            (IsTopLevel() || GetParent() == NULL || GetParent()->IsShownOnScreen());
1027 }
1028
1029 // ----------------------------------------------------------------------------
1030 // RTTI
1031 // ----------------------------------------------------------------------------
1032
1033 bool wxWindowBase::IsTopLevel() const
1034 {
1035     return false;
1036 }
1037
1038 // ----------------------------------------------------------------------------
1039 // Freeze/Thaw
1040 // ----------------------------------------------------------------------------
1041
1042 void wxWindowBase::Freeze()
1043 {
1044     if ( !m_freezeCount++ )
1045     {
1046         // physically freeze this window:
1047         DoFreeze();
1048
1049         // and recursively freeze all children:
1050         for ( wxWindowList::iterator i = GetChildren().begin();
1051               i != GetChildren().end(); ++i )
1052         {
1053             wxWindow *child = *i;
1054             if ( child->IsTopLevel() )
1055                 continue;
1056
1057             child->Freeze();
1058         }
1059     }
1060 }
1061
1062 void wxWindowBase::Thaw()
1063 {
1064     wxASSERT_MSG( m_freezeCount, "Thaw() without matching Freeze()" );
1065
1066     if ( !--m_freezeCount )
1067     {
1068         // recursively thaw all children:
1069         for ( wxWindowList::iterator i = GetChildren().begin();
1070               i != GetChildren().end(); ++i )
1071         {
1072             wxWindow *child = *i;
1073             if ( child->IsTopLevel() )
1074                 continue;
1075
1076             child->Thaw();
1077         }
1078
1079         // physically thaw this window:
1080         DoThaw();
1081     }
1082 }
1083
1084 // ----------------------------------------------------------------------------
1085 // reparenting the window
1086 // ----------------------------------------------------------------------------
1087
1088 void wxWindowBase::AddChild(wxWindowBase *child)
1089 {
1090     wxCHECK_RET( child, wxT("can't add a NULL child") );
1091
1092     // this should never happen and it will lead to a crash later if it does
1093     // because RemoveChild() will remove only one node from the children list
1094     // and the other(s) one(s) will be left with dangling pointers in them
1095     wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), wxT("AddChild() called twice") );
1096
1097     GetChildren().Append((wxWindow*)child);
1098     child->SetParent(this);
1099
1100     // adding a child while frozen will assert when thawed, so freeze it as if
1101     // it had been already present when we were frozen
1102     if ( IsFrozen() && !child->IsTopLevel() )
1103         child->Freeze();
1104 }
1105
1106 void wxWindowBase::RemoveChild(wxWindowBase *child)
1107 {
1108     wxCHECK_RET( child, wxT("can't remove a NULL child") );
1109
1110     // removing a child while frozen may result in permanently frozen window
1111     // if used e.g. from Reparent(), so thaw it
1112     //
1113     // NB: IsTopLevel() doesn't return true any more when a TLW child is being
1114     //     removed from its ~wxWindowBase, so check for IsBeingDeleted() too
1115     if ( IsFrozen() && !child->IsBeingDeleted() && !child->IsTopLevel() )
1116         child->Thaw();
1117
1118     GetChildren().DeleteObject((wxWindow *)child);
1119     child->SetParent(NULL);
1120 }
1121
1122 bool wxWindowBase::Reparent(wxWindowBase *newParent)
1123 {
1124     wxWindow *oldParent = GetParent();
1125     if ( newParent == oldParent )
1126     {
1127         // nothing done
1128         return false;
1129     }
1130
1131     const bool oldEnabledState = IsEnabled();
1132
1133     // unlink this window from the existing parent.
1134     if ( oldParent )
1135     {
1136         oldParent->RemoveChild(this);
1137     }
1138     else
1139     {
1140         wxTopLevelWindows.DeleteObject((wxWindow *)this);
1141     }
1142
1143     // add it to the new one
1144     if ( newParent )
1145     {
1146         newParent->AddChild(this);
1147     }
1148     else
1149     {
1150         wxTopLevelWindows.Append((wxWindow *)this);
1151     }
1152
1153     // We need to notify window (and its subwindows) if by changing the parent
1154     // we also change our enabled/disabled status.
1155     const bool newEnabledState = IsEnabled();
1156     if ( newEnabledState != oldEnabledState )
1157     {
1158         NotifyWindowOnEnableChange(newEnabledState);
1159     }
1160
1161     return true;
1162 }
1163
1164 // ----------------------------------------------------------------------------
1165 // event handler stuff
1166 // ----------------------------------------------------------------------------
1167
1168 void wxWindowBase::SetEventHandler(wxEvtHandler *handler)
1169 {
1170     wxCHECK_RET(handler != NULL, "SetEventHandler(NULL) called");
1171
1172     m_eventHandler = handler;
1173 }
1174
1175 void wxWindowBase::SetNextHandler(wxEvtHandler *WXUNUSED(handler))
1176 {
1177     // disable wxEvtHandler chain mechanism for wxWindows:
1178     // wxWindow uses its own stack mechanism which doesn't mix well with wxEvtHandler's one
1179
1180     wxFAIL_MSG("wxWindow cannot be part of a wxEvtHandler chain");
1181 }
1182 void wxWindowBase::SetPreviousHandler(wxEvtHandler *WXUNUSED(handler))
1183 {
1184     // we can't simply wxFAIL here as in SetNextHandler: in fact the last
1185     // handler of our stack when is destroyed will be Unlink()ed and thus
1186     // will call this function to update the pointer of this window...
1187
1188     //wxFAIL_MSG("wxWindow cannot be part of a wxEvtHandler chain");
1189 }
1190
1191 void wxWindowBase::PushEventHandler(wxEvtHandler *handlerToPush)
1192 {
1193     wxCHECK_RET( handlerToPush != NULL, "PushEventHandler(NULL) called" );
1194
1195     // the new handler is going to be part of the wxWindow stack of event handlers:
1196     // it can't be part also of an event handler double-linked chain:
1197     wxASSERT_MSG(handlerToPush->IsUnlinked(),
1198         "The handler being pushed in the wxWindow stack shouldn't be part of "
1199         "a wxEvtHandler chain; call Unlink() on it first");
1200
1201     wxEvtHandler *handlerOld = GetEventHandler();
1202     wxCHECK_RET( handlerOld, "an old event handler is NULL?" );
1203
1204     // now use wxEvtHandler double-linked list to implement a stack:
1205     handlerToPush->SetNextHandler(handlerOld);
1206
1207     if (handlerOld != this)
1208         handlerOld->SetPreviousHandler(handlerToPush);
1209
1210     SetEventHandler(handlerToPush);
1211
1212 #if wxDEBUG_LEVEL
1213     // final checks of the operations done above:
1214     wxASSERT_MSG( handlerToPush->GetPreviousHandler() == NULL,
1215         "the first handler of the wxWindow stack should "
1216         "have no previous handlers set" );
1217     wxASSERT_MSG( handlerToPush->GetNextHandler() != NULL,
1218         "the first handler of the wxWindow stack should "
1219         "have non-NULL next handler" );
1220
1221     wxEvtHandler* pLast = handlerToPush;
1222     while ( pLast && pLast != this )
1223         pLast = pLast->GetNextHandler();
1224     wxASSERT_MSG( pLast->GetNextHandler() == NULL,
1225         "the last handler of the wxWindow stack should "
1226         "have this window as next handler" );
1227 #endif // wxDEBUG_LEVEL
1228 }
1229
1230 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
1231 {
1232     // we need to pop the wxWindow stack, i.e. we need to remove the first handler
1233
1234     wxEvtHandler *firstHandler = GetEventHandler();
1235     wxCHECK_MSG( firstHandler != NULL, NULL, "wxWindow cannot have a NULL event handler" );
1236     wxCHECK_MSG( firstHandler != this, NULL, "cannot pop the wxWindow itself" );
1237     wxCHECK_MSG( firstHandler->GetPreviousHandler() == NULL, NULL,
1238         "the first handler of the wxWindow stack should have no previous handlers set" );
1239
1240     wxEvtHandler *secondHandler = firstHandler->GetNextHandler();
1241     wxCHECK_MSG( secondHandler != NULL, NULL,
1242         "the first handler of the wxWindow stack should have non-NULL next handler" );
1243
1244     firstHandler->SetNextHandler(NULL);
1245     secondHandler->SetPreviousHandler(NULL);
1246
1247     // now firstHandler is completely unlinked; set secondHandler as the new window event handler
1248     SetEventHandler(secondHandler);
1249
1250     if ( deleteHandler )
1251     {
1252         delete firstHandler;
1253         firstHandler = NULL;
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 )
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         delete m_constraintsInvolvedIn;
2075         m_constraintsInvolvedIn = NULL;
2076     }
2077 }
2078
2079 #endif // wxUSE_CONSTRAINTS
2080
2081 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
2082 {
2083     if ( sizer == m_windowSizer)
2084         return;
2085
2086     if ( m_windowSizer )
2087     {
2088         m_windowSizer->SetContainingWindow(NULL);
2089
2090         if ( deleteOld )
2091             delete m_windowSizer;
2092     }
2093
2094     m_windowSizer = sizer;
2095     if ( m_windowSizer )
2096     {
2097         m_windowSizer->SetContainingWindow((wxWindow *)this);
2098     }
2099
2100     SetAutoLayout(m_windowSizer != NULL);
2101 }
2102
2103 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
2104 {
2105     SetSizer( sizer, deleteOld );
2106     sizer->SetSizeHints( (wxWindow*) this );
2107 }
2108
2109
2110 void wxWindowBase::SetContainingSizer(wxSizer* sizer)
2111 {
2112     // adding a window to a sizer twice is going to result in fatal and
2113     // hard to debug problems later because when deleting the second
2114     // associated wxSizerItem we're going to dereference a dangling
2115     // pointer; so try to detect this as early as possible
2116     wxASSERT_MSG( !sizer || m_containingSizer != sizer,
2117                   wxT("Adding a window to the same sizer twice?") );
2118
2119     m_containingSizer = sizer;
2120 }
2121
2122 #if wxUSE_CONSTRAINTS
2123
2124 void wxWindowBase::SatisfyConstraints()
2125 {
2126     wxLayoutConstraints *constr = GetConstraints();
2127     bool wasOk = constr && constr->AreSatisfied();
2128
2129     ResetConstraints();   // Mark all constraints as unevaluated
2130
2131     int noChanges = 1;
2132
2133     // if we're a top level panel (i.e. our parent is frame/dialog), our
2134     // own constraints will never be satisfied any more unless we do it
2135     // here
2136     if ( wasOk )
2137     {
2138         while ( noChanges > 0 )
2139         {
2140             LayoutPhase1(&noChanges);
2141         }
2142     }
2143
2144     LayoutPhase2(&noChanges);
2145 }
2146
2147 #endif // wxUSE_CONSTRAINTS
2148
2149 bool wxWindowBase::Layout()
2150 {
2151     // If there is a sizer, use it instead of the constraints
2152     if ( GetSizer() )
2153     {
2154         int w = 0, h = 0;
2155         GetVirtualSize(&w, &h);
2156         GetSizer()->SetDimension( 0, 0, w, h );
2157     }
2158 #if wxUSE_CONSTRAINTS
2159     else
2160     {
2161         SatisfyConstraints(); // Find the right constraints values
2162         SetConstraintSizes(); // Recursively set the real window sizes
2163     }
2164 #endif
2165
2166     return true;
2167 }
2168
2169 void wxWindowBase::InternalOnSize(wxSizeEvent& event)
2170 {
2171     if ( GetAutoLayout() )
2172         Layout();
2173
2174     event.Skip();
2175 }
2176
2177 #if wxUSE_CONSTRAINTS
2178
2179 // first phase of the constraints evaluation: set our own constraints
2180 bool wxWindowBase::LayoutPhase1(int *noChanges)
2181 {
2182     wxLayoutConstraints *constr = GetConstraints();
2183
2184     return !constr || constr->SatisfyConstraints(this, noChanges);
2185 }
2186
2187 // second phase: set the constraints for our children
2188 bool wxWindowBase::LayoutPhase2(int *noChanges)
2189 {
2190     *noChanges = 0;
2191
2192     // Layout children
2193     DoPhase(1);
2194
2195     // Layout grand children
2196     DoPhase(2);
2197
2198     return true;
2199 }
2200
2201 // Do a phase of evaluating child constraints
2202 bool wxWindowBase::DoPhase(int phase)
2203 {
2204     // the list containing the children for which the constraints are already
2205     // set correctly
2206     wxWindowList succeeded;
2207
2208     // the max number of iterations we loop before concluding that we can't set
2209     // the constraints
2210     static const int maxIterations = 500;
2211
2212     for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
2213     {
2214         int noChanges = 0;
2215
2216         // loop over all children setting their constraints
2217         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2218               node;
2219               node = node->GetNext() )
2220         {
2221             wxWindow *child = node->GetData();
2222             if ( child->IsTopLevel() )
2223             {
2224                 // top level children are not inside our client area
2225                 continue;
2226             }
2227
2228             if ( !child->GetConstraints() || succeeded.Find(child) )
2229             {
2230                 // this one is either already ok or nothing we can do about it
2231                 continue;
2232             }
2233
2234             int tempNoChanges = 0;
2235             bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
2236                                       : child->LayoutPhase2(&tempNoChanges);
2237             noChanges += tempNoChanges;
2238
2239             if ( success )
2240             {
2241                 succeeded.Append(child);
2242             }
2243         }
2244
2245         if ( !noChanges )
2246         {
2247             // constraints are set
2248             break;
2249         }
2250     }
2251
2252     return true;
2253 }
2254
2255 void wxWindowBase::ResetConstraints()
2256 {
2257     wxLayoutConstraints *constr = GetConstraints();
2258     if ( constr )
2259     {
2260         constr->left.SetDone(false);
2261         constr->top.SetDone(false);
2262         constr->right.SetDone(false);
2263         constr->bottom.SetDone(false);
2264         constr->width.SetDone(false);
2265         constr->height.SetDone(false);
2266         constr->centreX.SetDone(false);
2267         constr->centreY.SetDone(false);
2268     }
2269
2270     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2271     while (node)
2272     {
2273         wxWindow *win = node->GetData();
2274         if ( !win->IsTopLevel() )
2275             win->ResetConstraints();
2276         node = node->GetNext();
2277     }
2278 }
2279
2280 // Need to distinguish between setting the 'fake' size for windows and sizers,
2281 // and setting the real values.
2282 void wxWindowBase::SetConstraintSizes(bool recurse)
2283 {
2284     wxLayoutConstraints *constr = GetConstraints();
2285     if ( constr && constr->AreSatisfied() )
2286     {
2287         int x = constr->left.GetValue();
2288         int y = constr->top.GetValue();
2289         int w = constr->width.GetValue();
2290         int h = constr->height.GetValue();
2291
2292         if ( (constr->width.GetRelationship() != wxAsIs ) ||
2293              (constr->height.GetRelationship() != wxAsIs) )
2294         {
2295             SetSize(x, y, w, h);
2296         }
2297         else
2298         {
2299             // If we don't want to resize this window, just move it...
2300             Move(x, y);
2301         }
2302     }
2303     else if ( constr )
2304     {
2305         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
2306                    GetClassInfo()->GetClassName(),
2307                    GetName().c_str());
2308     }
2309
2310     if ( recurse )
2311     {
2312         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2313         while (node)
2314         {
2315             wxWindow *win = node->GetData();
2316             if ( !win->IsTopLevel() && win->GetConstraints() )
2317                 win->SetConstraintSizes();
2318             node = node->GetNext();
2319         }
2320     }
2321 }
2322
2323 // Only set the size/position of the constraint (if any)
2324 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
2325 {
2326     wxLayoutConstraints *constr = GetConstraints();
2327     if ( constr )
2328     {
2329         if ( x != wxDefaultCoord )
2330         {
2331             constr->left.SetValue(x);
2332             constr->left.SetDone(true);
2333         }
2334         if ( y != wxDefaultCoord )
2335         {
2336             constr->top.SetValue(y);
2337             constr->top.SetDone(true);
2338         }
2339         if ( w != wxDefaultCoord )
2340         {
2341             constr->width.SetValue(w);
2342             constr->width.SetDone(true);
2343         }
2344         if ( h != wxDefaultCoord )
2345         {
2346             constr->height.SetValue(h);
2347             constr->height.SetDone(true);
2348         }
2349     }
2350 }
2351
2352 void wxWindowBase::MoveConstraint(int x, int y)
2353 {
2354     wxLayoutConstraints *constr = GetConstraints();
2355     if ( constr )
2356     {
2357         if ( x != wxDefaultCoord )
2358         {
2359             constr->left.SetValue(x);
2360             constr->left.SetDone(true);
2361         }
2362         if ( y != wxDefaultCoord )
2363         {
2364             constr->top.SetValue(y);
2365             constr->top.SetDone(true);
2366         }
2367     }
2368 }
2369
2370 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
2371 {
2372     wxLayoutConstraints *constr = GetConstraints();
2373     if ( constr )
2374     {
2375         *w = constr->width.GetValue();
2376         *h = constr->height.GetValue();
2377     }
2378     else
2379         GetSize(w, h);
2380 }
2381
2382 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
2383 {
2384     wxLayoutConstraints *constr = GetConstraints();
2385     if ( constr )
2386     {
2387         *w = constr->width.GetValue();
2388         *h = constr->height.GetValue();
2389     }
2390     else
2391         GetClientSize(w, h);
2392 }
2393
2394 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
2395 {
2396     wxLayoutConstraints *constr = GetConstraints();
2397     if ( constr )
2398     {
2399         *x = constr->left.GetValue();
2400         *y = constr->top.GetValue();
2401     }
2402     else
2403         GetPosition(x, y);
2404 }
2405
2406 #endif // wxUSE_CONSTRAINTS
2407
2408 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
2409 {
2410     // don't do it for the dialogs/frames - they float independently of their
2411     // parent
2412     if ( !IsTopLevel() )
2413     {
2414         wxWindow *parent = GetParent();
2415         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
2416         {
2417             wxPoint pt(parent->GetClientAreaOrigin());
2418             x += pt.x;
2419             y += pt.y;
2420         }
2421     }
2422 }
2423
2424 // ----------------------------------------------------------------------------
2425 // Update UI processing
2426 // ----------------------------------------------------------------------------
2427
2428 void wxWindowBase::UpdateWindowUI(long flags)
2429 {
2430     wxUpdateUIEvent event(GetId());
2431     event.SetEventObject(this);
2432
2433     if ( GetEventHandler()->ProcessEvent(event) )
2434     {
2435         DoUpdateWindowUI(event);
2436     }
2437
2438     if (flags & wxUPDATE_UI_RECURSE)
2439     {
2440         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2441         while (node)
2442         {
2443             wxWindow* child = (wxWindow*) node->GetData();
2444             child->UpdateWindowUI(flags);
2445             node = node->GetNext();
2446         }
2447     }
2448 }
2449
2450 // do the window-specific processing after processing the update event
2451 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
2452 {
2453     if ( event.GetSetEnabled() )
2454         Enable(event.GetEnabled());
2455
2456     if ( event.GetSetShown() )
2457         Show(event.GetShown());
2458 }
2459
2460 // ----------------------------------------------------------------------------
2461 // dialog units translations
2462 // ----------------------------------------------------------------------------
2463
2464 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
2465 {
2466     int charWidth = GetCharWidth();
2467     int charHeight = GetCharHeight();
2468     wxPoint pt2 = wxDefaultPosition;
2469     if (pt.x != wxDefaultCoord)
2470         pt2.x = (int) ((pt.x * 4) / charWidth);
2471     if (pt.y != wxDefaultCoord)
2472         pt2.y = (int) ((pt.y * 8) / charHeight);
2473
2474     return pt2;
2475 }
2476
2477 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
2478 {
2479     int charWidth = GetCharWidth();
2480     int charHeight = GetCharHeight();
2481     wxPoint pt2 = wxDefaultPosition;
2482     if (pt.x != wxDefaultCoord)
2483         pt2.x = (int) ((pt.x * charWidth) / 4);
2484     if (pt.y != wxDefaultCoord)
2485         pt2.y = (int) ((pt.y * charHeight) / 8);
2486
2487     return pt2;
2488 }
2489
2490 // ----------------------------------------------------------------------------
2491 // event handlers
2492 // ----------------------------------------------------------------------------
2493
2494 // propagate the colour change event to the subwindows
2495 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& WXUNUSED(event))
2496 {
2497     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2498     while ( node )
2499     {
2500         // Only propagate to non-top-level windows
2501         wxWindow *win = node->GetData();
2502         if ( !win->IsTopLevel() )
2503         {
2504             wxSysColourChangedEvent event2;
2505             event2.SetEventObject(win);
2506             win->GetEventHandler()->ProcessEvent(event2);
2507         }
2508
2509         node = node->GetNext();
2510     }
2511
2512     Refresh();
2513 }
2514
2515 // the default action is to populate dialog with data when it's created,
2516 // and nudge the UI into displaying itself correctly in case
2517 // we've turned the wxUpdateUIEvents frequency down low.
2518 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
2519 {
2520     TransferDataToWindow();
2521
2522     // Update the UI at this point
2523     UpdateWindowUI(wxUPDATE_UI_RECURSE);
2524 }
2525
2526 // ----------------------------------------------------------------------------
2527 // menu-related functions
2528 // ----------------------------------------------------------------------------
2529
2530 #if wxUSE_MENUS
2531
2532 bool wxWindowBase::PopupMenu(wxMenu *menu, int x, int y)
2533 {
2534     wxCHECK_MSG( menu, false, "can't popup NULL menu" );
2535
2536     wxCurrentPopupMenu = menu;
2537     const bool rc = DoPopupMenu(menu, x, y);
2538     wxCurrentPopupMenu = NULL;
2539
2540     return rc;
2541 }
2542
2543 // this is used to pass the id of the selected item from the menu event handler
2544 // to the main function itself
2545 //
2546 // it's ok to use a global here as there can be at most one popup menu shown at
2547 // any time
2548 static int gs_popupMenuSelection = wxID_NONE;
2549
2550 void wxWindowBase::InternalOnPopupMenu(wxCommandEvent& event)
2551 {
2552     // store the id in a global variable where we'll retrieve it from later
2553     gs_popupMenuSelection = event.GetId();
2554 }
2555
2556 void wxWindowBase::InternalOnPopupMenuUpdate(wxUpdateUIEvent& WXUNUSED(event))
2557 {
2558     // nothing to do but do not skip it
2559 }
2560
2561 int
2562 wxWindowBase::DoGetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y)
2563 {
2564     gs_popupMenuSelection = wxID_NONE;
2565
2566     Connect(wxEVT_COMMAND_MENU_SELECTED,
2567             wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2568             NULL,
2569             this);
2570
2571     // it is common to construct the menu passed to this function dynamically
2572     // using some fixed range of ids which could clash with the ids used
2573     // elsewhere in the program, which could result in some menu items being
2574     // unintentionally disabled or otherwise modified by update UI handlers
2575     // elsewhere in the program code and this is difficult to avoid in the
2576     // program itself, so instead we just temporarily suspend UI updating while
2577     // this menu is shown
2578     Connect(wxEVT_UPDATE_UI,
2579             wxUpdateUIEventHandler(wxWindowBase::InternalOnPopupMenuUpdate),
2580             NULL,
2581             this);
2582
2583     PopupMenu(&menu, x, y);
2584
2585     Disconnect(wxEVT_UPDATE_UI,
2586                wxUpdateUIEventHandler(wxWindowBase::InternalOnPopupMenuUpdate),
2587                NULL,
2588                this);
2589     Disconnect(wxEVT_COMMAND_MENU_SELECTED,
2590                wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2591                NULL,
2592                this);
2593
2594     return gs_popupMenuSelection;
2595 }
2596
2597 #endif // wxUSE_MENUS
2598
2599 // methods for drawing the sizers in a visible way: this is currently only
2600 // enabled for "full debug" builds with wxDEBUG_LEVEL==2 as it doesn't work
2601 // that well and also because we don't want to leave it enabled in default
2602 // builds used for production
2603 #if wxDEBUG_LEVEL > 1
2604
2605 static void DrawSizers(wxWindowBase *win);
2606
2607 static void DrawBorder(wxWindowBase *win, const wxRect& rect, bool fill, const wxPen* pen)
2608 {
2609     wxClientDC dc((wxWindow *)win);
2610     dc.SetPen(*pen);
2611     dc.SetBrush(fill ? wxBrush(pen->GetColour(), wxBRUSHSTYLE_CROSSDIAG_HATCH) :
2612                        *wxTRANSPARENT_BRUSH);
2613     dc.DrawRectangle(rect.Deflate(1, 1));
2614 }
2615
2616 static void DrawSizer(wxWindowBase *win, wxSizer *sizer)
2617 {
2618     const wxSizerItemList& items = sizer->GetChildren();
2619     for ( wxSizerItemList::const_iterator i = items.begin(),
2620                                         end = items.end();
2621           i != end;
2622           ++i )
2623     {
2624         wxSizerItem *item = *i;
2625         if ( item->IsSizer() )
2626         {
2627             DrawBorder(win, item->GetRect().Deflate(2), false, wxRED_PEN);
2628             DrawSizer(win, item->GetSizer());
2629         }
2630         else if ( item->IsSpacer() )
2631         {
2632             DrawBorder(win, item->GetRect().Deflate(2), true, wxBLUE_PEN);
2633         }
2634         else if ( item->IsWindow() )
2635         {
2636             DrawSizers(item->GetWindow());
2637         }
2638         else
2639             wxFAIL_MSG("inconsistent wxSizerItem status!");
2640     }
2641 }
2642
2643 static void DrawSizers(wxWindowBase *win)
2644 {
2645     DrawBorder(win, win->GetClientSize(), false, wxGREEN_PEN);
2646
2647     wxSizer *sizer = win->GetSizer();
2648     if ( sizer )
2649     {
2650         DrawSizer(win, sizer);
2651     }
2652     else // no sizer, still recurse into the children
2653     {
2654         const wxWindowList& children = win->GetChildren();
2655         for ( wxWindowList::const_iterator i = children.begin(),
2656                                          end = children.end();
2657               i != end;
2658               ++i )
2659         {
2660             DrawSizers(*i);
2661         }
2662
2663         // show all kind of sizes of this window; see the "window sizing" topic
2664         // overview for more info about the various differences:
2665         wxSize fullSz = win->GetSize();
2666         wxSize clientSz = win->GetClientSize();
2667         wxSize bestSz = win->GetBestSize();
2668         wxSize minSz = win->GetMinSize();
2669         wxSize maxSz = win->GetMaxSize();
2670         wxSize virtualSz = win->GetVirtualSize();
2671
2672         wxMessageOutputDebug dbgout;
2673         dbgout.Printf(
2674             "%-10s => fullsz=%4d;%-4d  clientsz=%4d;%-4d  bestsz=%4d;%-4d  minsz=%4d;%-4d  maxsz=%4d;%-4d virtualsz=%4d;%-4d\n",
2675             win->GetName(),
2676             fullSz.x, fullSz.y,
2677             clientSz.x, clientSz.y,
2678             bestSz.x, bestSz.y,
2679             minSz.x, minSz.y,
2680             maxSz.x, maxSz.y,
2681             virtualSz.x, virtualSz.y);
2682     }
2683 }
2684
2685 #endif // wxDEBUG_LEVEL
2686
2687 // process special middle clicks
2688 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
2689 {
2690     if ( event.ControlDown() && event.AltDown() )
2691     {
2692 #if wxDEBUG_LEVEL > 1
2693         // Ctrl-Alt-Shift-mclick makes the sizers visible in debug builds
2694         if ( event.ShiftDown() )
2695         {
2696             DrawSizers(this);
2697         }
2698         else
2699 #endif // __WXDEBUG__
2700         {
2701             // just Ctrl-Alt-middle click shows information about wx version
2702             ::wxInfoMessageBox((wxWindow*)this);
2703         }
2704     }
2705     else
2706     {
2707         event.Skip();
2708     }
2709 }
2710
2711 // ----------------------------------------------------------------------------
2712 // accessibility
2713 // ----------------------------------------------------------------------------
2714
2715 #if wxUSE_ACCESSIBILITY
2716 void wxWindowBase::SetAccessible(wxAccessible* accessible)
2717 {
2718     if (m_accessible && (accessible != m_accessible))
2719         delete m_accessible;
2720     m_accessible = accessible;
2721     if (m_accessible)
2722         m_accessible->SetWindow((wxWindow*) this);
2723 }
2724
2725 // Returns the accessible object, creating if necessary.
2726 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2727 {
2728     if (!m_accessible)
2729         m_accessible = CreateAccessible();
2730     return m_accessible;
2731 }
2732
2733 // Override to create a specific accessible object.
2734 wxAccessible* wxWindowBase::CreateAccessible()
2735 {
2736     return new wxWindowAccessible((wxWindow*) this);
2737 }
2738
2739 #endif
2740
2741 // ----------------------------------------------------------------------------
2742 // list classes implementation
2743 // ----------------------------------------------------------------------------
2744
2745 #if wxUSE_STL
2746
2747 #include "wx/listimpl.cpp"
2748 WX_DEFINE_LIST(wxWindowList)
2749
2750 #else // !wxUSE_STL
2751
2752 void wxWindowListNode::DeleteData()
2753 {
2754     delete (wxWindow *)GetData();
2755 }
2756
2757 #endif // wxUSE_STL/!wxUSE_STL
2758
2759 // ----------------------------------------------------------------------------
2760 // borders
2761 // ----------------------------------------------------------------------------
2762
2763 wxBorder wxWindowBase::GetBorder(long flags) const
2764 {
2765     wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2766     if ( border == wxBORDER_DEFAULT )
2767     {
2768         border = GetDefaultBorder();
2769     }
2770     else if ( border == wxBORDER_THEME )
2771     {
2772         border = GetDefaultBorderForControl();
2773     }
2774
2775     return border;
2776 }
2777
2778 wxBorder wxWindowBase::GetDefaultBorder() const
2779 {
2780     return wxBORDER_NONE;
2781 }
2782
2783 // ----------------------------------------------------------------------------
2784 // hit testing
2785 // ----------------------------------------------------------------------------
2786
2787 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2788 {
2789     // here we just check if the point is inside the window or not
2790
2791     // check the top and left border first
2792     bool outside = x < 0 || y < 0;
2793     if ( !outside )
2794     {
2795         // check the right and bottom borders too
2796         wxSize size = GetSize();
2797         outside = x >= size.x || y >= size.y;
2798     }
2799
2800     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2801 }
2802
2803 // ----------------------------------------------------------------------------
2804 // mouse capture
2805 // ----------------------------------------------------------------------------
2806
2807 struct WXDLLEXPORT wxWindowNext
2808 {
2809     wxWindow *win;
2810     wxWindowNext *next;
2811 } *wxWindowBase::ms_winCaptureNext = NULL;
2812 wxWindow *wxWindowBase::ms_winCaptureCurrent = NULL;
2813 bool wxWindowBase::ms_winCaptureChanging = false;
2814
2815 void wxWindowBase::CaptureMouse()
2816 {
2817     wxLogTrace(wxT("mousecapture"), wxT("CaptureMouse(%p)"), static_cast<void*>(this));
2818
2819     wxASSERT_MSG( !ms_winCaptureChanging, wxT("recursive CaptureMouse call?") );
2820
2821     ms_winCaptureChanging = true;
2822
2823     wxWindow *winOld = GetCapture();
2824     if ( winOld )
2825     {
2826         ((wxWindowBase*) winOld)->DoReleaseMouse();
2827
2828         // save it on stack
2829         wxWindowNext *item = new wxWindowNext;
2830         item->win = winOld;
2831         item->next = ms_winCaptureNext;
2832         ms_winCaptureNext = item;
2833     }
2834     //else: no mouse capture to save
2835
2836     DoCaptureMouse();
2837     ms_winCaptureCurrent = (wxWindow*)this;
2838
2839     ms_winCaptureChanging = false;
2840 }
2841
2842 void wxWindowBase::ReleaseMouse()
2843 {
2844     wxLogTrace(wxT("mousecapture"), wxT("ReleaseMouse(%p)"), static_cast<void*>(this));
2845
2846     wxASSERT_MSG( !ms_winCaptureChanging, wxT("recursive ReleaseMouse call?") );
2847
2848     wxASSERT_MSG( GetCapture() == this,
2849                   "attempt to release mouse, but this window hasn't captured it" );
2850     wxASSERT_MSG( ms_winCaptureCurrent == this,
2851                   "attempt to release mouse, but this window hasn't captured it" );
2852
2853     ms_winCaptureChanging = true;
2854
2855     DoReleaseMouse();
2856     ms_winCaptureCurrent = NULL;
2857
2858     if ( ms_winCaptureNext )
2859     {
2860         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2861         ms_winCaptureCurrent = ms_winCaptureNext->win;
2862
2863         wxWindowNext *item = ms_winCaptureNext;
2864         ms_winCaptureNext = item->next;
2865         delete item;
2866     }
2867     //else: stack is empty, no previous capture
2868
2869     ms_winCaptureChanging = false;
2870
2871     wxLogTrace(wxT("mousecapture"),
2872         (const wxChar *) wxT("After ReleaseMouse() mouse is captured by %p"),
2873         static_cast<void*>(GetCapture()));
2874 }
2875
2876 static void DoNotifyWindowAboutCaptureLost(wxWindow *win)
2877 {
2878     wxMouseCaptureLostEvent event(win->GetId());
2879     event.SetEventObject(win);
2880     if ( !win->GetEventHandler()->ProcessEvent(event) )
2881     {
2882         // windows must handle this event, otherwise the app wouldn't behave
2883         // correctly if it loses capture unexpectedly; see the discussion here:
2884         // http://sourceforge.net/tracker/index.php?func=detail&aid=1153662&group_id=9863&atid=109863
2885         // http://article.gmane.org/gmane.comp.lib.wxwidgets.devel/82376
2886         wxFAIL_MSG( wxT("window that captured the mouse didn't process wxEVT_MOUSE_CAPTURE_LOST") );
2887     }
2888 }
2889
2890 /* static */
2891 void wxWindowBase::NotifyCaptureLost()
2892 {
2893     // don't do anything if capture lost was expected, i.e. resulted from
2894     // a wx call to ReleaseMouse or CaptureMouse:
2895     if ( ms_winCaptureChanging )
2896         return;
2897
2898     // if the capture was lost unexpectedly, notify every window that has
2899     // capture (on stack or current) about it and clear the stack:
2900
2901     if ( ms_winCaptureCurrent )
2902     {
2903         DoNotifyWindowAboutCaptureLost(ms_winCaptureCurrent);
2904         ms_winCaptureCurrent = NULL;
2905     }
2906
2907     while ( ms_winCaptureNext )
2908     {
2909         wxWindowNext *item = ms_winCaptureNext;
2910         ms_winCaptureNext = item->next;
2911
2912         DoNotifyWindowAboutCaptureLost(item->win);
2913
2914         delete item;
2915     }
2916 }
2917
2918 #if wxUSE_HOTKEY
2919
2920 bool
2921 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2922                              int WXUNUSED(modifiers),
2923                              int WXUNUSED(keycode))
2924 {
2925     // not implemented
2926     return false;
2927 }
2928
2929 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2930 {
2931     // not implemented
2932     return false;
2933 }
2934
2935 #endif // wxUSE_HOTKEY
2936
2937 // ----------------------------------------------------------------------------
2938 // event processing
2939 // ----------------------------------------------------------------------------
2940
2941 bool wxWindowBase::TryBefore(wxEvent& event)
2942 {
2943 #if wxUSE_VALIDATORS
2944     // Can only use the validator of the window which
2945     // is receiving the event
2946     if ( event.GetEventObject() == this )
2947     {
2948         wxValidator * const validator = GetValidator();
2949         if ( validator && validator->ProcessEventHere(event) )
2950         {
2951             return true;
2952         }
2953     }
2954 #endif // wxUSE_VALIDATORS
2955
2956     return wxEvtHandler::TryBefore(event);
2957 }
2958
2959 bool wxWindowBase::TryAfter(wxEvent& event)
2960 {
2961     // carry on up the parent-child hierarchy if the propagation count hasn't
2962     // reached zero yet
2963     if ( event.ShouldPropagate() )
2964     {
2965         // honour the requests to stop propagation at this window: this is
2966         // used by the dialogs, for example, to prevent processing the events
2967         // from the dialog controls in the parent frame which rarely, if ever,
2968         // makes sense
2969         if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
2970         {
2971             wxWindow *parent = GetParent();
2972             if ( parent && !parent->IsBeingDeleted() )
2973             {
2974                 wxPropagateOnce propagateOnce(event);
2975
2976                 return parent->GetEventHandler()->ProcessEvent(event);
2977             }
2978         }
2979     }
2980
2981     return wxEvtHandler::TryAfter(event);
2982 }
2983
2984 // ----------------------------------------------------------------------------
2985 // window relationships
2986 // ----------------------------------------------------------------------------
2987
2988 wxWindow *wxWindowBase::DoGetSibling(WindowOrder order) const
2989 {
2990     wxCHECK_MSG( GetParent(), NULL,
2991                     wxT("GetPrev/NextSibling() don't work for TLWs!") );
2992
2993     wxWindowList& siblings = GetParent()->GetChildren();
2994     wxWindowList::compatibility_iterator i = siblings.Find((wxWindow *)this);
2995     wxCHECK_MSG( i, NULL, wxT("window not a child of its parent?") );
2996
2997     if ( order == OrderBefore )
2998         i = i->GetPrevious();
2999     else // OrderAfter
3000         i = i->GetNext();
3001
3002     return i ? i->GetData() : NULL;
3003 }
3004
3005 // ----------------------------------------------------------------------------
3006 // keyboard navigation
3007 // ----------------------------------------------------------------------------
3008
3009 // Navigates in the specified direction inside this window
3010 bool wxWindowBase::DoNavigateIn(int flags)
3011 {
3012 #ifdef wxHAS_NATIVE_TAB_TRAVERSAL
3013     // native code doesn't process our wxNavigationKeyEvents anyhow
3014     wxUnusedVar(flags);
3015     return false;
3016 #else // !wxHAS_NATIVE_TAB_TRAVERSAL
3017     wxNavigationKeyEvent eventNav;
3018     wxWindow *focused = FindFocus();
3019     eventNav.SetCurrentFocus(focused);
3020     eventNav.SetEventObject(focused);
3021     eventNav.SetFlags(flags);
3022     return GetEventHandler()->ProcessEvent(eventNav);
3023 #endif // wxHAS_NATIVE_TAB_TRAVERSAL/!wxHAS_NATIVE_TAB_TRAVERSAL
3024 }
3025
3026 bool wxWindowBase::HandleAsNavigationKey(const wxKeyEvent& event)
3027 {
3028     if ( event.GetKeyCode() != WXK_TAB )
3029         return false;
3030
3031     int flags = wxNavigationKeyEvent::FromTab;
3032
3033     if ( event.ShiftDown() )
3034         flags |= wxNavigationKeyEvent::IsBackward;
3035     else
3036         flags |= wxNavigationKeyEvent::IsForward;
3037
3038     if ( event.ControlDown() )
3039         flags |= wxNavigationKeyEvent::WinChange;
3040
3041     Navigate(flags);
3042     return true;
3043 }
3044
3045 void wxWindowBase::DoMoveInTabOrder(wxWindow *win, WindowOrder move)
3046 {
3047     // check that we're not a top level window
3048     wxCHECK_RET( GetParent(),
3049                     wxT("MoveBefore/AfterInTabOrder() don't work for TLWs!") );
3050
3051     // detect the special case when we have nothing to do anyhow and when the
3052     // code below wouldn't work
3053     if ( win == this )
3054         return;
3055
3056     // find the target window in the siblings list
3057     wxWindowList& siblings = GetParent()->GetChildren();
3058     wxWindowList::compatibility_iterator i = siblings.Find(win);
3059     wxCHECK_RET( i, wxT("MoveBefore/AfterInTabOrder(): win is not a sibling") );
3060
3061     // unfortunately, when wxUSE_STL == 1 DetachNode() is not implemented so we
3062     // can't just move the node around
3063     wxWindow *self = (wxWindow *)this;
3064     siblings.DeleteObject(self);
3065     if ( move == OrderAfter )
3066     {
3067         i = i->GetNext();
3068     }
3069
3070     if ( i )
3071     {
3072         siblings.Insert(i, self);
3073     }
3074     else // OrderAfter and win was the last sibling
3075     {
3076         siblings.Append(self);
3077     }
3078 }
3079
3080 // ----------------------------------------------------------------------------
3081 // focus handling
3082 // ----------------------------------------------------------------------------
3083
3084 /*static*/ wxWindow* wxWindowBase::FindFocus()
3085 {
3086     wxWindowBase *win = DoFindFocus();
3087     return win ? win->GetMainWindowOfCompositeControl() : NULL;
3088 }
3089
3090 bool wxWindowBase::HasFocus() const
3091 {
3092     wxWindowBase *win = DoFindFocus();
3093     return win == this ||
3094            win == wxConstCast(this, wxWindowBase)->GetMainWindowOfCompositeControl();
3095 }
3096
3097 // ----------------------------------------------------------------------------
3098 // drag and drop
3099 // ----------------------------------------------------------------------------
3100
3101 #if wxUSE_DRAG_AND_DROP && !defined(__WXMSW__)
3102
3103 namespace
3104 {
3105
3106 class DragAcceptFilesTarget : public wxFileDropTarget
3107 {
3108 public:
3109     DragAcceptFilesTarget(wxWindowBase *win) : m_win(win) {}
3110
3111     virtual bool OnDropFiles(wxCoord x, wxCoord y,
3112                              const wxArrayString& filenames)
3113     {
3114         wxDropFilesEvent event(wxEVT_DROP_FILES,
3115                                filenames.size(),
3116                                wxCArrayString(filenames).Release());
3117         event.SetEventObject(m_win);
3118         event.m_pos.x = x;
3119         event.m_pos.y = y;
3120
3121         return m_win->HandleWindowEvent(event);
3122     }
3123
3124 private:
3125     wxWindowBase * const m_win;
3126
3127     wxDECLARE_NO_COPY_CLASS(DragAcceptFilesTarget);
3128 };
3129
3130
3131 } // anonymous namespace
3132
3133 // Generic version of DragAcceptFiles(). It works by installing a simple
3134 // wxFileDropTarget-to-EVT_DROP_FILES adaptor and therefore cannot be used
3135 // together with explicit SetDropTarget() calls.
3136 void wxWindowBase::DragAcceptFiles(bool accept)
3137 {
3138     if ( accept )
3139     {
3140         wxASSERT_MSG( !GetDropTarget(),
3141                       "cannot use DragAcceptFiles() and SetDropTarget() together" );
3142         SetDropTarget(new DragAcceptFilesTarget(this));
3143     }
3144     else
3145     {
3146         SetDropTarget(NULL);
3147     }
3148 }
3149
3150 #endif // wxUSE_DRAG_AND_DROP && !defined(__WXMSW__)
3151
3152 // ----------------------------------------------------------------------------
3153 // global functions
3154 // ----------------------------------------------------------------------------
3155
3156 wxWindow* wxGetTopLevelParent(wxWindow *win)
3157 {
3158     while ( win && !win->IsTopLevel() )
3159          win = win->GetParent();
3160
3161     return win;
3162 }
3163
3164 #if wxUSE_ACCESSIBILITY
3165 // ----------------------------------------------------------------------------
3166 // accessible object for windows
3167 // ----------------------------------------------------------------------------
3168
3169 // Can return either a child object, or an integer
3170 // representing the child element, starting from 1.
3171 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
3172 {
3173     wxASSERT( GetWindow() != NULL );
3174     if (!GetWindow())
3175         return wxACC_FAIL;
3176
3177     return wxACC_NOT_IMPLEMENTED;
3178 }
3179
3180 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
3181 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
3182 {
3183     wxASSERT( GetWindow() != NULL );
3184     if (!GetWindow())
3185         return wxACC_FAIL;
3186
3187     wxWindow* win = NULL;
3188     if (elementId == 0)
3189     {
3190         win = GetWindow();
3191     }
3192     else
3193     {
3194         if (elementId <= (int) GetWindow()->GetChildren().GetCount())
3195         {
3196             win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
3197         }
3198         else
3199             return wxACC_FAIL;
3200     }
3201     if (win)
3202     {
3203         rect = win->GetRect();
3204         if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
3205             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
3206         return wxACC_OK;
3207     }
3208
3209     return wxACC_NOT_IMPLEMENTED;
3210 }
3211
3212 // Navigates from fromId to toId/toObject.
3213 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
3214                              int* WXUNUSED(toId), wxAccessible** toObject)
3215 {
3216     wxASSERT( GetWindow() != NULL );
3217     if (!GetWindow())
3218         return wxACC_FAIL;
3219
3220     switch (navDir)
3221     {
3222     case wxNAVDIR_FIRSTCHILD:
3223         {
3224             if (GetWindow()->GetChildren().GetCount() == 0)
3225                 return wxACC_FALSE;
3226             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
3227             *toObject = childWindow->GetOrCreateAccessible();
3228
3229             return wxACC_OK;
3230         }
3231     case wxNAVDIR_LASTCHILD:
3232         {
3233             if (GetWindow()->GetChildren().GetCount() == 0)
3234                 return wxACC_FALSE;
3235             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
3236             *toObject = childWindow->GetOrCreateAccessible();
3237
3238             return wxACC_OK;
3239         }
3240     case wxNAVDIR_RIGHT:
3241     case wxNAVDIR_DOWN:
3242     case wxNAVDIR_NEXT:
3243         {
3244             wxWindowList::compatibility_iterator node =
3245                 wxWindowList::compatibility_iterator();
3246             if (fromId == 0)
3247             {
3248                 // Can't navigate to sibling of this window
3249                 // if we're a top-level window.
3250                 if (!GetWindow()->GetParent())
3251                     return wxACC_NOT_IMPLEMENTED;
3252
3253                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
3254             }
3255             else
3256             {
3257                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
3258                     node = GetWindow()->GetChildren().Item(fromId-1);
3259             }
3260
3261             if (node && node->GetNext())
3262             {
3263                 wxWindow* nextWindow = node->GetNext()->GetData();
3264                 *toObject = nextWindow->GetOrCreateAccessible();
3265                 return wxACC_OK;
3266             }
3267             else
3268                 return wxACC_FALSE;
3269         }
3270     case wxNAVDIR_LEFT:
3271     case wxNAVDIR_UP:
3272     case wxNAVDIR_PREVIOUS:
3273         {
3274             wxWindowList::compatibility_iterator node =
3275                 wxWindowList::compatibility_iterator();
3276             if (fromId == 0)
3277             {
3278                 // Can't navigate to sibling of this window
3279                 // if we're a top-level window.
3280                 if (!GetWindow()->GetParent())
3281                     return wxACC_NOT_IMPLEMENTED;
3282
3283                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
3284             }
3285             else
3286             {
3287                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
3288                     node = GetWindow()->GetChildren().Item(fromId-1);
3289             }
3290
3291             if (node && node->GetPrevious())
3292             {
3293                 wxWindow* previousWindow = node->GetPrevious()->GetData();
3294                 *toObject = previousWindow->GetOrCreateAccessible();
3295                 return wxACC_OK;
3296             }
3297             else
3298                 return wxACC_FALSE;
3299         }
3300     }
3301
3302     return wxACC_NOT_IMPLEMENTED;
3303 }
3304
3305 // Gets the name of the specified object.
3306 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
3307 {
3308     wxASSERT( GetWindow() != NULL );
3309     if (!GetWindow())
3310         return wxACC_FAIL;
3311
3312     wxString title;
3313
3314     // If a child, leave wxWidgets to call the function on the actual
3315     // child object.
3316     if (childId > 0)
3317         return wxACC_NOT_IMPLEMENTED;
3318
3319     // This will eventually be replaced by specialised
3320     // accessible classes, one for each kind of wxWidgets
3321     // control or window.
3322 #if wxUSE_BUTTON
3323     if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
3324         title = ((wxButton*) GetWindow())->GetLabel();
3325     else
3326 #endif
3327         title = GetWindow()->GetName();
3328
3329     if (!title.empty())
3330     {
3331         *name = title;
3332         return wxACC_OK;
3333     }
3334     else
3335         return wxACC_NOT_IMPLEMENTED;
3336 }
3337
3338 // Gets the number of children.
3339 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
3340 {
3341     wxASSERT( GetWindow() != NULL );
3342     if (!GetWindow())
3343         return wxACC_FAIL;
3344
3345     *childId = (int) GetWindow()->GetChildren().GetCount();
3346     return wxACC_OK;
3347 }
3348
3349 // Gets the specified child (starting from 1).
3350 // If *child is NULL and return value is wxACC_OK,
3351 // this means that the child is a simple element and
3352 // not an accessible object.
3353 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
3354 {
3355     wxASSERT( GetWindow() != NULL );
3356     if (!GetWindow())
3357         return wxACC_FAIL;
3358
3359     if (childId == 0)
3360     {
3361         *child = this;
3362         return wxACC_OK;
3363     }
3364
3365     if (childId > (int) GetWindow()->GetChildren().GetCount())
3366         return wxACC_FAIL;
3367
3368     wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
3369     *child = childWindow->GetOrCreateAccessible();
3370     if (*child)
3371         return wxACC_OK;
3372     else
3373         return wxACC_FAIL;
3374 }
3375
3376 // Gets the parent, or NULL.
3377 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
3378 {
3379     wxASSERT( GetWindow() != NULL );
3380     if (!GetWindow())
3381         return wxACC_FAIL;
3382
3383     wxWindow* parentWindow = GetWindow()->GetParent();
3384     if (!parentWindow)
3385     {
3386         *parent = NULL;
3387         return wxACC_OK;
3388     }
3389     else
3390     {
3391         *parent = parentWindow->GetOrCreateAccessible();
3392         if (*parent)
3393             return wxACC_OK;
3394         else
3395             return wxACC_FAIL;
3396     }
3397 }
3398
3399 // Performs the default action. childId is 0 (the action for this object)
3400 // or > 0 (the action for a child).
3401 // Return wxACC_NOT_SUPPORTED if there is no default action for this
3402 // window (e.g. an edit control).
3403 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
3404 {
3405     wxASSERT( GetWindow() != NULL );
3406     if (!GetWindow())
3407         return wxACC_FAIL;
3408
3409     return wxACC_NOT_IMPLEMENTED;
3410 }
3411
3412 // Gets the default action for this object (0) or > 0 (the action for a child).
3413 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
3414 // string if there is no action.
3415 // The retrieved string describes the action that is performed on an object,
3416 // not what the object does as a result. For example, a toolbar button that prints
3417 // a document has a default action of "Press" rather than "Prints the current document."
3418 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
3419 {
3420     wxASSERT( GetWindow() != NULL );
3421     if (!GetWindow())
3422         return wxACC_FAIL;
3423
3424     return wxACC_NOT_IMPLEMENTED;
3425 }
3426
3427 // Returns the description for this object or a child.
3428 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
3429 {
3430     wxASSERT( GetWindow() != NULL );
3431     if (!GetWindow())
3432         return wxACC_FAIL;
3433
3434     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3435     if (!ht.empty())
3436     {
3437         *description = ht;
3438         return wxACC_OK;
3439     }
3440     return wxACC_NOT_IMPLEMENTED;
3441 }
3442
3443 // Returns help text for this object or a child, similar to tooltip text.
3444 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
3445 {
3446     wxASSERT( GetWindow() != NULL );
3447     if (!GetWindow())
3448         return wxACC_FAIL;
3449
3450     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3451     if (!ht.empty())
3452     {
3453         *helpText = ht;
3454         return wxACC_OK;
3455     }
3456     return wxACC_NOT_IMPLEMENTED;
3457 }
3458
3459 // Returns the keyboard shortcut for this object or child.
3460 // Return e.g. ALT+K
3461 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
3462 {
3463     wxASSERT( GetWindow() != NULL );
3464     if (!GetWindow())
3465         return wxACC_FAIL;
3466
3467     return wxACC_NOT_IMPLEMENTED;
3468 }
3469
3470 // Returns a role constant.
3471 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
3472 {
3473     wxASSERT( GetWindow() != NULL );
3474     if (!GetWindow())
3475         return wxACC_FAIL;
3476
3477     // If a child, leave wxWidgets to call the function on the actual
3478     // child object.
3479     if (childId > 0)
3480         return wxACC_NOT_IMPLEMENTED;
3481
3482     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3483         return wxACC_NOT_IMPLEMENTED;
3484 #if wxUSE_STATUSBAR
3485     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3486         return wxACC_NOT_IMPLEMENTED;
3487 #endif
3488 #if wxUSE_TOOLBAR
3489     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3490         return wxACC_NOT_IMPLEMENTED;
3491 #endif
3492
3493     //*role = wxROLE_SYSTEM_CLIENT;
3494     *role = wxROLE_SYSTEM_CLIENT;
3495     return wxACC_OK;
3496
3497     #if 0
3498     return wxACC_NOT_IMPLEMENTED;
3499     #endif
3500 }
3501
3502 // Returns a state constant.
3503 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
3504 {
3505     wxASSERT( GetWindow() != NULL );
3506     if (!GetWindow())
3507         return wxACC_FAIL;
3508
3509     // If a child, leave wxWidgets to call the function on the actual
3510     // child object.
3511     if (childId > 0)
3512         return wxACC_NOT_IMPLEMENTED;
3513
3514     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3515         return wxACC_NOT_IMPLEMENTED;
3516
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     *state = 0;
3527     return wxACC_OK;
3528
3529     #if 0
3530     return wxACC_NOT_IMPLEMENTED;
3531     #endif
3532 }
3533
3534 // Returns a localized string representing the value for the object
3535 // or child.
3536 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
3537 {
3538     wxASSERT( GetWindow() != NULL );
3539     if (!GetWindow())
3540         return wxACC_FAIL;
3541
3542     return wxACC_NOT_IMPLEMENTED;
3543 }
3544
3545 // Selects the object or child.
3546 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
3547 {
3548     wxASSERT( GetWindow() != NULL );
3549     if (!GetWindow())
3550         return wxACC_FAIL;
3551
3552     return wxACC_NOT_IMPLEMENTED;
3553 }
3554
3555 // Gets the window with the keyboard focus.
3556 // If childId is 0 and child is NULL, no object in
3557 // this subhierarchy has the focus.
3558 // If this object has the focus, child should be 'this'.
3559 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
3560 {
3561     wxASSERT( GetWindow() != NULL );
3562     if (!GetWindow())
3563         return wxACC_FAIL;
3564
3565     return wxACC_NOT_IMPLEMENTED;
3566 }
3567
3568 #if wxUSE_VARIANT
3569 // Gets a variant representing the selected children
3570 // of this object.
3571 // Acceptable values:
3572 // - a null variant (IsNull() returns true)
3573 // - a list variant (GetType() == wxT("list")
3574 // - an integer representing the selected child element,
3575 //   or 0 if this object is selected (GetType() == wxT("long")
3576 // - a "void*" pointer to a wxAccessible child object
3577 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
3578 {
3579     wxASSERT( GetWindow() != NULL );
3580     if (!GetWindow())
3581         return wxACC_FAIL;
3582
3583     return wxACC_NOT_IMPLEMENTED;
3584 }
3585 #endif // wxUSE_VARIANT
3586
3587 #endif // wxUSE_ACCESSIBILITY
3588
3589 // ----------------------------------------------------------------------------
3590 // RTL support
3591 // ----------------------------------------------------------------------------
3592
3593 wxCoord
3594 wxWindowBase::AdjustForLayoutDirection(wxCoord x,
3595                                        wxCoord width,
3596                                        wxCoord widthTotal) const
3597 {
3598     if ( GetLayoutDirection() == wxLayout_RightToLeft )
3599     {
3600         x = widthTotal - x - width;
3601     }
3602
3603     return x;
3604 }
3605
3606