src/common/wincmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/window.cpp
   3 // Purpose:     common (to all ports) wxWindow functions
   4 // Author:      Julian Smart, Vadim Zeitlin
   5 // Modified by:
   6 // Created:     13/07/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWidgets team
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/string.h"
  29     #include "wx/log.h"
  30     #include "wx/intl.h"
  31     #include "wx/frame.h"
  32     #include "wx/window.h"
  33     #include "wx/control.h"
  34     #include "wx/checkbox.h"
  35     #include "wx/radiobut.h"
  36     #include "wx/statbox.h"
  37     #include "wx/textctrl.h"
  38     #include "wx/settings.h"
  39     #include "wx/dialog.h"
  40     #include "wx/msgdlg.h"
  41     #include "wx/msgout.h"
  42     #include "wx/statusbr.h"
  43     #include "wx/toolbar.h"
  44     #include "wx/dcclient.h"
  45     #include "wx/scrolbar.h"
  46     #include "wx/layout.h"
  47     #include "wx/sizer.h"
  48     #include "wx/menu.h"
  49 #endif //WX_PRECOMP
  50
  51 #if wxUSE_DRAG_AND_DROP
  52     #include "wx/dnd.h"
  53 #endif // wxUSE_DRAG_AND_DROP
  54
  55 #if wxUSE_ACCESSIBILITY
  56     #include "wx/access.h"
  57 #endif
  58
  59 #if wxUSE_HELP
  60     #include "wx/cshelp.h"
  61 #endif // wxUSE_HELP
  62
  63 #if wxUSE_TOOLTIPS
  64     #include "wx/tooltip.h"
  65 #endif // wxUSE_TOOLTIPS
  66
  67 #if wxUSE_CARET
  68     #include "wx/caret.h"
  69 #endif // wxUSE_CARET
  70
  71 #if wxUSE_SYSTEM_OPTIONS
  72     #include "wx/sysopt.h"
  73 #endif
  74
  75 #include "wx/platinfo.h"
  76 #include "wx/private/window.h"
  77
  78 #ifdef __WXMSW__
  79     #include "wx/msw/wrapwin.h"
  80 #endif
  81
  82 // Windows List
  83 WXDLLIMPEXP_DATA_CORE(wxWindowList) wxTopLevelWindows;
  84
  85 // globals
  86 #if wxUSE_MENUS
  87 wxMenu *wxCurrentPopupMenu = NULL;
  88 #endif // wxUSE_MENUS
  89
  90 // ----------------------------------------------------------------------------
  91 // static data
  92 // ----------------------------------------------------------------------------
  93
  94
  95 IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
  96
  97 // ----------------------------------------------------------------------------
  98 // event table
  99 // ----------------------------------------------------------------------------
 100
 101 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
 102     EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
 103     EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
 104     EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
 105
 106 #if wxUSE_HELP
 107     EVT_HELP(wxID_ANY, wxWindowBase::OnHelp)
 108 #endif // wxUSE_HELP
 109
 110     EVT_SIZE(wxWindowBase::InternalOnSize)
 111 END_EVENT_TABLE()
 112
 113 // ============================================================================
 114 // implementation of the common functionality of the wxWindow class
 115 // ============================================================================
 116
 117 // ----------------------------------------------------------------------------
 118 // initialization
 119 // ----------------------------------------------------------------------------
 120
 121 // the default initialization
 122 wxWindowBase::wxWindowBase()
 123 {
 124     // no window yet, no parent nor children
 125     m_parent = NULL;
 126     m_windowId = wxID_ANY;
 127
 128     // no constraints on the minimal window size
 129     m_minWidth =
 130     m_maxWidth = wxDefaultCoord;
 131     m_minHeight =
 132     m_maxHeight = wxDefaultCoord;
 133
 134     // invalidiated cache value
 135     m_bestSizeCache = wxDefaultSize;
 136
 137     // window are created enabled and visible by default
 138     m_isShown =
 139     m_isEnabled = true;
 140
 141     // the default event handler is just this window
 142     m_eventHandler = this;
 143
 144 #if wxUSE_VALIDATORS
 145     // no validator
 146     m_windowValidator = NULL;
 147 #endif // wxUSE_VALIDATORS
 148
 149     // the colours/fonts are default for now, so leave m_font,
 150     // m_backgroundColour and m_foregroundColour uninitialized and set those
 151     m_hasBgCol =
 152     m_hasFgCol =
 153     m_hasFont = false;
 154     m_inheritBgCol =
 155     m_inheritFgCol =
 156     m_inheritFont = false;
 157
 158     // no style bits
 159     m_exStyle =
 160     m_windowStyle = 0;
 161
 162     m_backgroundStyle = wxBG_STYLE_ERASE;
 163
 164 #if wxUSE_CONSTRAINTS
 165     // no constraints whatsoever
 166     m_constraints = NULL;
 167     m_constraintsInvolvedIn = NULL;
 168 #endif // wxUSE_CONSTRAINTS
 169
 170     m_windowSizer = NULL;
 171     m_containingSizer = NULL;
 172     m_autoLayout = false;
 173
 174 #if wxUSE_DRAG_AND_DROP
 175     m_dropTarget = NULL;
 176 #endif // wxUSE_DRAG_AND_DROP
 177
 178 #if wxUSE_TOOLTIPS
 179     m_tooltip = NULL;
 180 #endif // wxUSE_TOOLTIPS
 181
 182 #if wxUSE_CARET
 183     m_caret = NULL;
 184 #endif // wxUSE_CARET
 185
 186 #if wxUSE_PALETTE
 187     m_hasCustomPalette = false;
 188 #endif // wxUSE_PALETTE
 189
 190 #if wxUSE_ACCESSIBILITY
 191     m_accessible = NULL;
 192 #endif
 193
 194     m_virtualSize = wxDefaultSize;
 195
 196     m_scrollHelper = NULL;
 197
 198     m_windowVariant = wxWINDOW_VARIANT_NORMAL;
 199 #if wxUSE_SYSTEM_OPTIONS
 200     if ( wxSystemOptions::HasOption(wxWINDOW_DEFAULT_VARIANT) )
 201     {
 202        m_windowVariant = (wxWindowVariant) wxSystemOptions::GetOptionInt( wxWINDOW_DEFAULT_VARIANT ) ;
 203     }
 204 #endif
 205
 206     // Whether we're using the current theme for this window (wxGTK only for now)
 207     m_themeEnabled = false;
 208
 209     // This is set to true by SendDestroyEvent() which should be called by the
 210     // most derived class to ensure that the destruction event is sent as soon
 211     // as possible to allow its handlers to still see the undestroyed window
 212     m_isBeingDeleted = false;
 213
 214     m_freezeCount = 0;
 215 }
 216
 217 // common part of window creation process
 218 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 219                               wxWindowID id,
 220                               const wxPoint& WXUNUSED(pos),
 221                               const wxSize& size,
 222                               long style,
 223                               const wxString& name)
 224 {
 225     // ids are limited to 16 bits under MSW so if you care about portability,
 226     // it's not a good idea to use ids out of this range (and negative ids are
 227     // reserved for wxWidgets own usage)
 228     wxASSERT_MSG( id == wxID_ANY || (id >= 0 && id < 32767) ||
 229                   (id >= wxID_AUTO_LOWEST && id <= wxID_AUTO_HIGHEST),
 230                   wxT("invalid id value") );
 231
 232     // generate a new id if the user doesn't care about it
 233     if ( id == wxID_ANY )
 234     {
 235         m_windowId = NewControlId();
 236     }
 237     else // valid id specified
 238     {
 239         m_windowId = id;
 240     }
 241
 242     // don't use SetWindowStyleFlag() here, this function should only be called
 243     // to change the flag after creation as it tries to reflect the changes in
 244     // flags by updating the window dynamically and we don't need this here
 245     m_windowStyle = style;
 246
 247     // assume the user doesn't want this window to shrink beneath its initial
 248     // size, this worked like this in wxWidgets 2.8 and before and generally
 249     // often makes sense for child windows (for top level ones it definitely
 250     // does not as the user should be able to resize the window)
 251     //
 252     // note that we can't use IsTopLevel() from ctor
 253     if ( size != wxDefaultSize && !wxTopLevelWindows.Find((wxWindow *)this) )
 254         SetMinSize(size);
 255
 256     SetName(name);
 257     SetParent(parent);
 258
 259     return true;
 260 }
 261
 262 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 263                               wxWindowID id,
 264                               const wxPoint& pos,
 265                               const wxSize& size,
 266                               long style,
 267                               const wxValidator& wxVALIDATOR_PARAM(validator),
 268                               const wxString& name)
 269 {
 270     if ( !CreateBase(parent, id, pos, size, style, name) )
 271         return false;
 272
 273 #if wxUSE_VALIDATORS
 274     SetValidator(validator);
 275 #endif // wxUSE_VALIDATORS
 276
 277     // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
 278     // have it too - like this it's possible to set it only in the top level
 279     // dialog/frame and all children will inherit it by defult
 280     if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
 281     {
 282         SetExtraStyle(GetExtraStyle() | wxWS_EX_VALIDATE_RECURSIVELY);
 283     }
 284
 285     return true;
 286 }
 287
 288 bool wxWindowBase::ToggleWindowStyle(int flag)
 289 {
 290     wxASSERT_MSG( flag, wxT("flags with 0 value can't be toggled") );
 291
 292     bool rc;
 293     long style = GetWindowStyleFlag();
 294     if ( style & flag )
 295     {
 296         style &= ~flag;
 297         rc = false;
 298     }
 299     else // currently off
 300     {
 301         style |= flag;
 302         rc = true;
 303     }
 304
 305     SetWindowStyleFlag(style);
 306
 307     return rc;
 308 }
 309
 310 // ----------------------------------------------------------------------------
 311 // destruction
 312 // ----------------------------------------------------------------------------
 313
 314 // common clean up
 315 wxWindowBase::~wxWindowBase()
 316 {
 317     wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
 318
 319     // FIXME if these 2 cases result from programming errors in the user code
 320     //       we should probably assert here instead of silently fixing them
 321
 322     // Just in case the window has been Closed, but we're then deleting
 323     // immediately: don't leave dangling pointers.
 324     wxPendingDelete.DeleteObject(this);
 325
 326     // Just in case we've loaded a top-level window via LoadNativeDialog but
 327     // we weren't a dialog class
 328     wxTopLevelWindows.DeleteObject((wxWindow*)this);
 329
 330     // Any additional event handlers should be popped before the window is
 331     // deleted as otherwise the last handler will be left with a dangling
 332     // pointer to this window result in a difficult to diagnose crash later on.
 333     wxASSERT_MSG( GetEventHandler() == this,
 334                     wxT("any pushed event handlers must have been removed") );
 335
 336 #if wxUSE_MENUS
 337     // The associated popup menu can still be alive, disassociate from it in
 338     // this case
 339     if ( wxCurrentPopupMenu && wxCurrentPopupMenu->GetInvokingWindow() == this )
 340         wxCurrentPopupMenu->SetInvokingWindow(NULL);
 341 #endif // wxUSE_MENUS
 342
 343     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 344
 345     // notify the parent about this window destruction
 346     if ( m_parent )
 347         m_parent->RemoveChild(this);
 348
 349 #if wxUSE_CARET
 350     delete m_caret;
 351 #endif // wxUSE_CARET
 352
 353 #if wxUSE_VALIDATORS
 354     delete m_windowValidator;
 355 #endif // wxUSE_VALIDATORS
 356
 357 #if wxUSE_CONSTRAINTS
 358     // Have to delete constraints/sizer FIRST otherwise sizers may try to look
 359     // at deleted windows as they delete themselves.
 360     DeleteRelatedConstraints();
 361
 362     if ( m_constraints )
 363     {
 364         // This removes any dangling pointers to this window in other windows'
 365         // constraintsInvolvedIn lists.
 366         UnsetConstraints(m_constraints);
 367         delete m_constraints;
 368         m_constraints = NULL;
 369     }
 370 #endif // wxUSE_CONSTRAINTS
 371
 372     if ( m_containingSizer )
 373         m_containingSizer->Detach( (wxWindow*)this );
 374
 375     delete m_windowSizer;
 376
 377 #if wxUSE_DRAG_AND_DROP
 378     delete m_dropTarget;
 379 #endif // wxUSE_DRAG_AND_DROP
 380
 381 #if wxUSE_TOOLTIPS
 382     delete m_tooltip;
 383 #endif // wxUSE_TOOLTIPS
 384
 385 #if wxUSE_ACCESSIBILITY
 386     delete m_accessible;
 387 #endif
 388
 389 #if wxUSE_HELP
 390     // NB: this has to be called unconditionally, because we don't know
 391     //     whether this window has associated help text or not
 392     wxHelpProvider *helpProvider = wxHelpProvider::Get();
 393     if ( helpProvider )
 394         helpProvider->RemoveHelp(this);
 395 #endif
 396 }
 397
 398 bool wxWindowBase::IsBeingDeleted() const
 399 {
 400     return m_isBeingDeleted ||
 401             (!IsTopLevel() && m_parent && m_parent->IsBeingDeleted());
 402 }
 403
 404 void wxWindowBase::SendDestroyEvent()
 405 {
 406     if ( m_isBeingDeleted )
 407     {
 408         // we could have been already called from a more derived class dtor,
 409         // e.g. ~wxTLW calls us and so does ~wxWindow and the latter call
 410         // should be simply ignored
 411         return;
 412     }
 413
 414     m_isBeingDeleted = true;
 415
 416     wxWindowDestroyEvent event;
 417     event.SetEventObject(this);
 418     event.SetId(GetId());
 419     GetEventHandler()->ProcessEvent(event);
 420 }
 421
 422 bool wxWindowBase::Destroy()
 423 {
 424     SendDestroyEvent();
 425
 426     delete this;
 427
 428     return true;
 429 }
 430
 431 bool wxWindowBase::Close(bool force)
 432 {
 433     wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
 434     event.SetEventObject(this);
 435     event.SetCanVeto(!force);
 436
 437     // return false if window wasn't closed because the application vetoed the
 438     // close event
 439     return HandleWindowEvent(event) && !event.GetVeto();
 440 }
 441
 442 bool wxWindowBase::DestroyChildren()
 443 {
 444     wxWindowList::compatibility_iterator node;
 445     for ( ;; )
 446     {
 447         // we iterate until the list becomes empty
 448         node = GetChildren().GetFirst();
 449         if ( !node )
 450             break;
 451
 452         wxWindow *child = node->GetData();
 453
 454         // note that we really want to delete it immediately so don't call the
 455         // possible overridden Destroy() version which might not delete the
 456         // child immediately resulting in problems with our (top level) child
 457         // outliving its parent
 458         child->wxWindowBase::Destroy();
 459
 460         wxASSERT_MSG( !GetChildren().Find(child),
 461                       wxT("child didn't remove itself using RemoveChild()") );
 462     }
 463
 464     return true;
 465 }
 466
 467 // ----------------------------------------------------------------------------
 468 // size/position related methods
 469 // ----------------------------------------------------------------------------
 470
 471 // centre the window with respect to its parent in either (or both) directions
 472 void wxWindowBase::DoCentre(int dir)
 473 {
 474     wxCHECK_RET( !(dir & wxCENTRE_ON_SCREEN) && GetParent(),
 475                  wxT("this method only implements centering child windows") );
 476
 477     SetSize(GetRect().CentreIn(GetParent()->GetClientSize(), dir));
 478 }
 479
 480 // fits the window around the children
 481 void wxWindowBase::Fit()
 482 {
 483     if ( !GetChildren().empty() )
 484     {
 485         SetSize(GetBestSize());
 486     }
 487     //else: do nothing if we have no children
 488 }
 489
 490 // fits virtual size (ie. scrolled area etc.) around children
 491 void wxWindowBase::FitInside()
 492 {
 493     if ( GetChildren().GetCount() > 0 )
 494     {
 495         SetVirtualSize( GetBestVirtualSize() );
 496     }
 497 }
 498
 499 // On Mac, scrollbars are explicitly children.
 500 #if defined( __WXMAC__ ) && !defined(__WXUNIVERSAL__)
 501 static bool wxHasRealChildren(const wxWindowBase* win)
 502 {
 503     int realChildCount = 0;
 504
 505     for ( wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
 506           node;
 507           node = node->GetNext() )
 508     {
 509         wxWindow *win = node->GetData();
 510         if ( !win->IsTopLevel() && win->IsShown()
 511 #if wxUSE_SCROLLBAR
 512             && !win->IsKindOf(CLASSINFO(wxScrollBar))
 513 #endif
 514             )
 515             realChildCount ++;
 516     }
 517     return (realChildCount > 0);
 518 }
 519 #endif
 520
 521 void wxWindowBase::InvalidateBestSize()
 522 {
 523     m_bestSizeCache = wxDefaultSize;
 524
 525     // parent's best size calculation may depend on its children's
 526     // as long as child window we are in is not top level window itself
 527     // (because the TLW size is never resized automatically)
 528     // so let's invalidate it as well to be safe:
 529     if (m_parent && !IsTopLevel())
 530         m_parent->InvalidateBestSize();
 531 }
 532
 533 // return the size best suited for the current window
 534 wxSize wxWindowBase::DoGetBestSize() const
 535 {
 536     wxSize best;
 537
 538     if ( m_windowSizer )
 539     {
 540         best = m_windowSizer->GetMinSize();
 541     }
 542 #if wxUSE_CONSTRAINTS
 543     else if ( m_constraints )
 544     {
 545         wxConstCast(this, wxWindowBase)->SatisfyConstraints();
 546
 547         // our minimal acceptable size is such that all our windows fit inside
 548         int maxX = 0,
 549             maxY = 0;
 550
 551         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 552               node;
 553               node = node->GetNext() )
 554         {
 555             wxLayoutConstraints *c = node->GetData()->GetConstraints();
 556             if ( !c )
 557             {
 558                 // it's not normal that we have an unconstrained child, but
 559                 // what can we do about it?
 560                 continue;
 561             }
 562
 563             int x = c->right.GetValue(),
 564                 y = c->bottom.GetValue();
 565
 566             if ( x > maxX )
 567                 maxX = x;
 568
 569             if ( y > maxY )
 570                 maxY = y;
 571
 572             // TODO: we must calculate the overlaps somehow, otherwise we
 573             //       will never return a size bigger than the current one :-(
 574         }
 575
 576         best = wxSize(maxX, maxY);
 577     }
 578 #endif // wxUSE_CONSTRAINTS
 579     else if ( !GetChildren().empty()
 580 #if defined( __WXMAC__ ) && !defined(__WXUNIVERSAL__)
 581               && wxHasRealChildren(this)
 582 #endif
 583               )
 584     {
 585         // our minimal acceptable size is such that all our visible child
 586         // windows fit inside
 587         int maxX = 0,
 588             maxY = 0;
 589
 590         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 591               node;
 592               node = node->GetNext() )
 593         {
 594             wxWindow *win = node->GetData();
 595             if ( win->IsTopLevel()
 596                     || !win->IsShown()
 597 #if wxUSE_STATUSBAR
 598                         || wxDynamicCast(win, wxStatusBar)
 599 #endif // wxUSE_STATUSBAR
 600                )
 601             {
 602                 // dialogs and frames lie in different top level windows -
 603                 // don't deal with them here; as for the status bars, they
 604                 // don't lie in the client area at all
 605                 continue;
 606             }
 607
 608             int wx, wy, ww, wh;
 609             win->GetPosition(&wx, &wy);
 610
 611             // if the window hadn't been positioned yet, assume that it is in
 612             // the origin
 613             if ( wx == wxDefaultCoord )
 614                 wx = 0;
 615             if ( wy == wxDefaultCoord )
 616                 wy = 0;
 617
 618             win->GetSize(&ww, &wh);
 619             if ( wx + ww > maxX )
 620                 maxX = wx + ww;
 621             if ( wy + wh > maxY )
 622                 maxY = wy + wh;
 623         }
 624
 625         best = wxSize(maxX, maxY);
 626     }
 627     else // ! has children
 628     {
 629         wxSize size = GetMinSize();
 630         if ( !size.IsFullySpecified() )
 631         {
 632             // if the window doesn't define its best size we assume that it can
 633             // be arbitrarily small -- usually this is not the case, of course,
 634             // but we have no way to know what the limit is, it should really
 635             // override DoGetBestClientSize() itself to tell us
 636             size.SetDefaults(wxSize(1, 1));
 637         }
 638
 639         // return as-is, unadjusted by the client size difference.
 640         return size;
 641     }
 642
 643     // Add any difference between size and client size
 644     wxSize diff = GetSize() - GetClientSize();
 645     best.x += wxMax(0, diff.x);
 646     best.y += wxMax(0, diff.y);
 647
 648     return best;
 649 }
 650
 651 // helper of GetWindowBorderSize(): as many ports don't implement support for
 652 // wxSYS_BORDER/EDGE_X/Y metrics in their wxSystemSettings, use hard coded
 653 // fallbacks in this case
 654 static int wxGetMetricOrDefault(wxSystemMetric what, const wxWindowBase* win)
 655 {
 656     int rc = wxSystemSettings::GetMetric(
 657         what, static_cast<wxWindow*>(const_cast<wxWindowBase*>(win)));
 658     if ( rc == -1 )
 659     {
 660         switch ( what )
 661         {
 662             case wxSYS_BORDER_X:
 663             case wxSYS_BORDER_Y:
 664                 // 2D border is by default 1 pixel wide
 665                 rc = 1;
 666                 break;
 667
 668             case wxSYS_EDGE_X:
 669             case wxSYS_EDGE_Y:
 670                 // 3D borders are by default 2 pixels
 671                 rc = 2;
 672                 break;
 673
 674             default:
 675                 wxFAIL_MSG( wxT("unexpected wxGetMetricOrDefault() argument") );
 676                 rc = 0;
 677         }
 678     }
 679
 680     return rc;
 681 }
 682
 683 wxSize wxWindowBase::GetWindowBorderSize() const
 684 {
 685     wxSize size;
 686
 687     switch ( GetBorder() )
 688     {
 689         case wxBORDER_NONE:
 690             // nothing to do, size is already (0, 0)
 691             break;
 692
 693         case wxBORDER_SIMPLE:
 694         case wxBORDER_STATIC:
 695             size.x = wxGetMetricOrDefault(wxSYS_BORDER_X, this);
 696             size.y = wxGetMetricOrDefault(wxSYS_BORDER_Y, this);
 697             break;
 698
 699         case wxBORDER_SUNKEN:
 700         case wxBORDER_RAISED:
 701             size.x = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_X, this),
 702                            wxGetMetricOrDefault(wxSYS_BORDER_X, this));
 703             size.y = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_Y, this),
 704                            wxGetMetricOrDefault(wxSYS_BORDER_Y, this));
 705             break;
 706
 707         case wxBORDER_DOUBLE:
 708             size.x = wxGetMetricOrDefault(wxSYS_EDGE_X, this) +
 709                         wxGetMetricOrDefault(wxSYS_BORDER_X, this);
 710             size.y = wxGetMetricOrDefault(wxSYS_EDGE_Y, this) +
 711                         wxGetMetricOrDefault(wxSYS_BORDER_Y, this);
 712             break;
 713
 714         default:
 715             wxFAIL_MSG(wxT("Unknown border style."));
 716             break;
 717     }
 718
 719     // we have borders on both sides
 720     return size*2;
 721 }
 722
 723 wxSize wxWindowBase::GetEffectiveMinSize() const
 724 {
 725     // merge the best size with the min size, giving priority to the min size
 726     wxSize min = GetMinSize();
 727
 728     if (min.x == wxDefaultCoord || min.y == wxDefaultCoord)
 729     {
 730         wxSize best = GetBestSize();
 731         if (min.x == wxDefaultCoord) min.x =  best.x;
 732         if (min.y == wxDefaultCoord) min.y =  best.y;
 733     }
 734
 735     return min;
 736 }
 737
 738 wxSize wxWindowBase::DoGetBorderSize() const
 739 {
 740     // there is one case in which we can implement it for all ports easily:
 741     // do it as some classes used by both wxUniv and native ports (e.g.
 742     // wxGenericStaticText) do override DoGetBestClientSize() and so this
 743     // method must work for them and that ensures that it does, at least in
 744     // the default case)
 745     if ( GetBorder() == wxBORDER_NONE )
 746         return wxSize(0, 0);
 747
 748     wxFAIL_MSG( "must be overridden if called" );
 749
 750     return wxDefaultSize;
 751 }
 752
 753 wxSize wxWindowBase::GetBestSize() const
 754 {
 755     if ( !m_windowSizer && m_bestSizeCache.IsFullySpecified() )
 756         return m_bestSizeCache;
 757
 758     // call DoGetBestClientSize() first, if a derived class overrides it wants
 759     // it to be used
 760     wxSize size = DoGetBestClientSize();
 761     if ( size != wxDefaultSize )
 762     {
 763         size += DoGetBorderSize();
 764
 765         CacheBestSize(size);
 766         return size;
 767     }
 768
 769     return DoGetBestSize();
 770 }
 771
 772 void wxWindowBase::SetMinSize(const wxSize& minSize)
 773 {
 774     m_minWidth = minSize.x;
 775     m_minHeight = minSize.y;
 776 }
 777
 778 void wxWindowBase::SetMaxSize(const wxSize& maxSize)
 779 {
 780     m_maxWidth = maxSize.x;
 781     m_maxHeight = maxSize.y;
 782 }
 783
 784 void wxWindowBase::SetInitialSize(const wxSize& size)
 785 {
 786     // Set the min size to the size passed in.  This will usually either be
 787     // wxDefaultSize or the size passed to this window's ctor/Create function.
 788     SetMinSize(size);
 789
 790     // Merge the size with the best size if needed
 791     wxSize best = GetEffectiveMinSize();
 792
 793     // If the current size doesn't match then change it
 794     if (GetSize() != best)
 795         SetSize(best);
 796 }
 797
 798
 799 // by default the origin is not shifted
 800 wxPoint wxWindowBase::GetClientAreaOrigin() const
 801 {
 802     return wxPoint(0,0);
 803 }
 804
 805 wxSize wxWindowBase::ClientToWindowSize(const wxSize& size) const
 806 {
 807     const wxSize diff(GetSize() - GetClientSize());
 808
 809     return wxSize(size.x == -1 ? -1 : size.x + diff.x,
 810                   size.y == -1 ? -1 : size.y + diff.y);
 811 }
 812
 813 wxSize wxWindowBase::WindowToClientSize(const wxSize& size) const
 814 {
 815     const wxSize diff(GetSize() - GetClientSize());
 816
 817     return wxSize(size.x == -1 ? -1 : size.x - diff.x,
 818                   size.y == -1 ? -1 : size.y - diff.y);
 819 }
 820
 821 void wxWindowBase::SetWindowVariant( wxWindowVariant variant )
 822 {
 823     if ( m_windowVariant != variant )
 824     {
 825         m_windowVariant = variant;
 826
 827         DoSetWindowVariant(variant);
 828     }
 829 }
 830
 831 void wxWindowBase::DoSetWindowVariant( wxWindowVariant variant )
 832 {
 833     // adjust the font height to correspond to our new variant (notice that
 834     // we're only called if something really changed)
 835     wxFont font = GetFont();
 836     int size = font.GetPointSize();
 837     switch ( variant )
 838     {
 839         case wxWINDOW_VARIANT_NORMAL:
 840             break;
 841
 842         case wxWINDOW_VARIANT_SMALL:
 843             size *= 3;
 844             size /= 4;
 845             break;
 846
 847         case wxWINDOW_VARIANT_MINI:
 848             size *= 2;
 849             size /= 3;
 850             break;
 851
 852         case wxWINDOW_VARIANT_LARGE:
 853             size *= 5;
 854             size /= 4;
 855             break;
 856
 857         default:
 858             wxFAIL_MSG(wxT("unexpected window variant"));
 859             break;
 860     }
 861
 862     font.SetPointSize(size);
 863     SetFont(font);
 864 }
 865
 866 void wxWindowBase::DoSetSizeHints( int minW, int minH,
 867                                    int maxW, int maxH,
 868                                    int WXUNUSED(incW), int WXUNUSED(incH) )
 869 {
 870     wxCHECK_RET( (minW == wxDefaultCoord || maxW == wxDefaultCoord || minW <= maxW) &&
 871                     (minH == wxDefaultCoord || maxH == wxDefaultCoord || minH <= maxH),
 872                  wxT("min width/height must be less than max width/height!") );
 873
 874     m_minWidth = minW;
 875     m_maxWidth = maxW;
 876     m_minHeight = minH;
 877     m_maxHeight = maxH;
 878 }
 879
 880
 881 #if WXWIN_COMPATIBILITY_2_8
 882 void wxWindowBase::SetVirtualSizeHints(int WXUNUSED(minW), int WXUNUSED(minH),
 883                                        int WXUNUSED(maxW), int WXUNUSED(maxH))
 884 {
 885 }
 886
 887 void wxWindowBase::SetVirtualSizeHints(const wxSize& WXUNUSED(minsize),
 888                                        const wxSize& WXUNUSED(maxsize))
 889 {
 890 }
 891 #endif // WXWIN_COMPATIBILITY_2_8
 892
 893 void wxWindowBase::DoSetVirtualSize( int x, int y )
 894 {
 895     m_virtualSize = wxSize(x, y);
 896 }
 897
 898 wxSize wxWindowBase::DoGetVirtualSize() const
 899 {
 900     // we should use the entire client area so if it is greater than our
 901     // virtual size, expand it to fit (otherwise if the window is big enough we
 902     // wouldn't be using parts of it)
 903     wxSize size = GetClientSize();
 904     if ( m_virtualSize.x > size.x )
 905         size.x = m_virtualSize.x;
 906
 907     if ( m_virtualSize.y >= size.y )
 908         size.y = m_virtualSize.y;
 909
 910     return size;
 911 }
 912
 913 void wxWindowBase::DoGetScreenPosition(int *x, int *y) const
 914 {
 915     // screen position is the same as (0, 0) in client coords for non TLWs (and
 916     // TLWs override this method)
 917     if ( x )
 918         *x = 0;
 919     if ( y )
 920         *y = 0;
 921
 922     ClientToScreen(x, y);
 923 }
 924
 925 void wxWindowBase::SendSizeEvent(int flags)
 926 {
 927     wxSizeEvent event(GetSize(), GetId());
 928     event.SetEventObject(this);
 929     if ( flags & wxSEND_EVENT_POST )
 930         wxPostEvent(this, event);
 931     else
 932         HandleWindowEvent(event);
 933 }
 934
 935 void wxWindowBase::SendSizeEventToParent(int flags)
 936 {
 937     wxWindow * const parent = GetParent();
 938     if ( parent && !parent->IsBeingDeleted() )
 939         parent->SendSizeEvent(flags);
 940 }
 941
 942 bool wxWindowBase::HasScrollbar(int orient) const
 943 {
 944     // if scrolling in the given direction is disabled, we can't have the
 945     // corresponding scrollbar no matter what
 946     if ( !CanScroll(orient) )
 947         return false;
 948
 949     const wxSize sizeVirt = GetVirtualSize();
 950     const wxSize sizeClient = GetClientSize();
 951
 952     return orient == wxHORIZONTAL ? sizeVirt.x > sizeClient.x
 953                                   : sizeVirt.y > sizeClient.y;
 954 }
 955
 956 // ----------------------------------------------------------------------------
 957 // show/hide/enable/disable the window
 958 // ----------------------------------------------------------------------------
 959
 960 bool wxWindowBase::Show(bool show)
 961 {
 962     if ( show != m_isShown )
 963     {
 964         m_isShown = show;
 965
 966         return true;
 967     }
 968     else
 969     {
 970         return false;
 971     }
 972 }
 973
 974 bool wxWindowBase::IsEnabled() const
 975 {
 976     return IsThisEnabled() && (IsTopLevel() || !GetParent() || GetParent()->IsEnabled());
 977 }
 978
 979 void wxWindowBase::NotifyWindowOnEnableChange(bool enabled)
 980 {
 981 #ifndef wxHAS_NATIVE_ENABLED_MANAGEMENT
 982     DoEnable(enabled);
 983 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 984
 985     OnEnabled(enabled);
 986
 987     // If we are top-level then the logic doesn't apply - otherwise
 988     // showing a modal dialog would result in total greying out (and ungreying
 989     // out later) of everything which would be really ugly
 990     if ( IsTopLevel() )
 991         return;
 992
 993     for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 994           node;
 995           node = node->GetNext() )
 996     {
 997         wxWindowBase * const child = node->GetData();
 998         if ( !child->IsTopLevel() && child->IsThisEnabled() )
 999             child->NotifyWindowOnEnableChange(enabled);
1000     }
1001 }
1002
1003 bool wxWindowBase::Enable(bool enable)
1004 {
1005     if ( enable == IsThisEnabled() )
1006         return false;
1007
1008     m_isEnabled = enable;
1009
1010 #ifdef wxHAS_NATIVE_ENABLED_MANAGEMENT
1011     DoEnable(enable);
1012 #else // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
1013     wxWindowBase * const parent = GetParent();
1014     if( !IsTopLevel() && parent && !parent->IsEnabled() )
1015     {
1016         return true;
1017     }
1018 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
1019
1020     NotifyWindowOnEnableChange(enable);
1021
1022     return true;
1023 }
1024
1025 bool wxWindowBase::IsShownOnScreen() const
1026 {
1027     // A window is shown on screen if it itself is shown and so are all its
1028     // parents. But if a window is toplevel one, then its always visible on
1029     // screen if IsShown() returns true, even if it has a hidden parent.
1030     return IsShown() &&
1031            (IsTopLevel() || GetParent() == NULL || GetParent()->IsShownOnScreen());
1032 }
1033
1034 // ----------------------------------------------------------------------------
1035 // RTTI
1036 // ----------------------------------------------------------------------------
1037
1038 bool wxWindowBase::IsTopLevel() const
1039 {
1040     return false;
1041 }
1042
1043 // ----------------------------------------------------------------------------
1044 // Freeze/Thaw
1045 // ----------------------------------------------------------------------------
1046
1047 void wxWindowBase::Freeze()
1048 {
1049     if ( !m_freezeCount++ )
1050     {
1051         // physically freeze this window:
1052         DoFreeze();
1053
1054         // and recursively freeze all children:
1055         for ( wxWindowList::iterator i = GetChildren().begin();
1056               i != GetChildren().end(); ++i )
1057         {
1058             wxWindow *child = *i;
1059             if ( child->IsTopLevel() )
1060                 continue;
1061
1062             child->Freeze();
1063         }
1064     }
1065 }
1066
1067 void wxWindowBase::Thaw()
1068 {
1069     wxASSERT_MSG( m_freezeCount, "Thaw() without matching Freeze()" );
1070
1071     if ( !--m_freezeCount )
1072     {
1073         // recursively thaw all children:
1074         for ( wxWindowList::iterator i = GetChildren().begin();
1075               i != GetChildren().end(); ++i )
1076         {
1077             wxWindow *child = *i;
1078             if ( child->IsTopLevel() )
1079                 continue;
1080
1081             child->Thaw();
1082         }
1083
1084         // physically thaw this window:
1085         DoThaw();
1086     }
1087 }
1088
1089 // ----------------------------------------------------------------------------
1090 // reparenting the window
1091 // ----------------------------------------------------------------------------
1092
1093 void wxWindowBase::AddChild(wxWindowBase *child)
1094 {
1095     wxCHECK_RET( child, wxT("can't add a NULL child") );
1096
1097     // this should never happen and it will lead to a crash later if it does
1098     // because RemoveChild() will remove only one node from the children list
1099     // and the other(s) one(s) will be left with dangling pointers in them
1100     wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), wxT("AddChild() called twice") );
1101
1102     GetChildren().Append((wxWindow*)child);
1103     child->SetParent(this);
1104
1105     // adding a child while frozen will assert when thawed, so freeze it as if
1106     // it had been already present when we were frozen
1107     if ( IsFrozen() && !child->IsTopLevel() )
1108         child->Freeze();
1109 }
1110
1111 void wxWindowBase::RemoveChild(wxWindowBase *child)
1112 {
1113     wxCHECK_RET( child, wxT("can't remove a NULL child") );
1114
1115     // removing a child while frozen may result in permanently frozen window
1116     // if used e.g. from Reparent(), so thaw it
1117     //
1118     // NB: IsTopLevel() doesn't return true any more when a TLW child is being
1119     //     removed from its ~wxWindowBase, so check for IsBeingDeleted() too
1120     if ( IsFrozen() && !child->IsBeingDeleted() && !child->IsTopLevel() )
1121         child->Thaw();
1122
1123     GetChildren().DeleteObject((wxWindow *)child);
1124     child->SetParent(NULL);
1125 }
1126
1127 bool wxWindowBase::Reparent(wxWindowBase *newParent)
1128 {
1129     wxWindow *oldParent = GetParent();
1130     if ( newParent == oldParent )
1131     {
1132         // nothing done
1133         return false;
1134     }
1135
1136     const bool oldEnabledState = IsEnabled();
1137
1138     // unlink this window from the existing parent.
1139     if ( oldParent )
1140     {
1141         oldParent->RemoveChild(this);
1142     }
1143     else
1144     {
1145         wxTopLevelWindows.DeleteObject((wxWindow *)this);
1146     }
1147
1148     // add it to the new one
1149     if ( newParent )
1150     {
1151         newParent->AddChild(this);
1152     }
1153     else
1154     {
1155         wxTopLevelWindows.Append((wxWindow *)this);
1156     }
1157
1158     // We need to notify window (and its subwindows) if by changing the parent
1159     // we also change our enabled/disabled status.
1160     const bool newEnabledState = IsEnabled();
1161     if ( newEnabledState != oldEnabledState )
1162     {
1163         NotifyWindowOnEnableChange(newEnabledState);
1164     }
1165
1166     return true;
1167 }
1168
1169 // ----------------------------------------------------------------------------
1170 // event handler stuff
1171 // ----------------------------------------------------------------------------
1172
1173 void wxWindowBase::SetEventHandler(wxEvtHandler *handler)
1174 {
1175     wxCHECK_RET(handler != NULL, "SetEventHandler(NULL) called");
1176
1177     m_eventHandler = handler;
1178 }
1179
1180 void wxWindowBase::SetNextHandler(wxEvtHandler *WXUNUSED(handler))
1181 {
1182     // disable wxEvtHandler chain mechanism for wxWindows:
1183     // wxWindow uses its own stack mechanism which doesn't mix well with wxEvtHandler's one
1184
1185     wxFAIL_MSG("wxWindow cannot be part of a wxEvtHandler chain");
1186 }
1187 void wxWindowBase::SetPreviousHandler(wxEvtHandler *WXUNUSED(handler))
1188 {
1189     // we can't simply wxFAIL here as in SetNextHandler: in fact the last
1190     // handler of our stack when is destroyed will be Unlink()ed and thus
1191     // will call this function to update the pointer of this window...
1192
1193     //wxFAIL_MSG("wxWindow cannot be part of a wxEvtHandler chain");
1194 }
1195
1196 void wxWindowBase::PushEventHandler(wxEvtHandler *handlerToPush)
1197 {
1198     wxCHECK_RET( handlerToPush != NULL, "PushEventHandler(NULL) called" );
1199
1200     // the new handler is going to be part of the wxWindow stack of event handlers:
1201     // it can't be part also of an event handler double-linked chain:
1202     wxASSERT_MSG(handlerToPush->IsUnlinked(),
1203         "The handler being pushed in the wxWindow stack shouldn't be part of "
1204         "a wxEvtHandler chain; call Unlink() on it first");
1205
1206     wxEvtHandler *handlerOld = GetEventHandler();
1207     wxCHECK_RET( handlerOld, "an old event handler is NULL?" );
1208
1209     // now use wxEvtHandler double-linked list to implement a stack:
1210     handlerToPush->SetNextHandler(handlerOld);
1211
1212     if (handlerOld != this)
1213         handlerOld->SetPreviousHandler(handlerToPush);
1214
1215     SetEventHandler(handlerToPush);
1216
1217 #if wxDEBUG_LEVEL
1218     // final checks of the operations done above:
1219     wxASSERT_MSG( handlerToPush->GetPreviousHandler() == NULL,
1220         "the first handler of the wxWindow stack should "
1221         "have no previous handlers set" );
1222     wxASSERT_MSG( handlerToPush->GetNextHandler() != NULL,
1223         "the first handler of the wxWindow stack should "
1224         "have non-NULL next handler" );
1225
1226     wxEvtHandler* pLast = handlerToPush;
1227     while ( pLast && pLast != this )
1228         pLast = pLast->GetNextHandler();
1229     wxASSERT_MSG( pLast->GetNextHandler() == NULL,
1230         "the last handler of the wxWindow stack should "
1231         "have this window as next handler" );
1232 #endif // wxDEBUG_LEVEL
1233 }
1234
1235 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
1236 {
1237     // we need to pop the wxWindow stack, i.e. we need to remove the first handler
1238
1239     wxEvtHandler *firstHandler = GetEventHandler();
1240     wxCHECK_MSG( firstHandler != NULL, NULL, "wxWindow cannot have a NULL event handler" );
1241     wxCHECK_MSG( firstHandler != this, NULL, "cannot pop the wxWindow itself" );
1242     wxCHECK_MSG( firstHandler->GetPreviousHandler() == NULL, NULL,
1243         "the first handler of the wxWindow stack should have no previous handlers set" );
1244
1245     wxEvtHandler *secondHandler = firstHandler->GetNextHandler();
1246     wxCHECK_MSG( secondHandler != NULL, NULL,
1247         "the first handler of the wxWindow stack should have non-NULL next handler" );
1248
1249     firstHandler->SetNextHandler(NULL);
1250     secondHandler->SetPreviousHandler(NULL);
1251
1252     // now firstHandler is completely unlinked; set secondHandler as the new window event handler
1253     SetEventHandler(secondHandler);
1254
1255     if ( deleteHandler )
1256     {
1257         delete firstHandler;
1258         firstHandler = NULL;
1259     }
1260
1261     return firstHandler;
1262 }
1263
1264 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handlerToRemove)
1265 {
1266     wxCHECK_MSG( handlerToRemove != NULL, false, "RemoveEventHandler(NULL) called" );
1267     wxCHECK_MSG( handlerToRemove != this, false, "Cannot remove the window itself" );
1268
1269     if (handlerToRemove == GetEventHandler())
1270     {
1271         // removing the first event handler is equivalent to "popping" the stack
1272         PopEventHandler(false);
1273         return true;
1274     }
1275
1276     // NOTE: the wxWindow event handler list is always terminated with "this" handler
1277     wxEvtHandler *handlerCur = GetEventHandler()->GetNextHandler();
1278     while ( handlerCur != this && handlerCur )
1279     {
1280         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
1281
1282         if ( handlerCur == handlerToRemove )
1283         {
1284             handlerCur->Unlink();
1285
1286             wxASSERT_MSG( handlerCur != GetEventHandler(),
1287                         "the case Remove == Pop should was already handled" );
1288             return true;
1289         }
1290
1291         handlerCur = handlerNext;
1292     }
1293
1294     wxFAIL_MSG( wxT("where has the event handler gone?") );
1295
1296     return false;
1297 }
1298
1299 bool wxWindowBase::HandleWindowEvent(wxEvent& event) const
1300 {
1301     // SafelyProcessEvent() will handle exceptions nicely
1302     return GetEventHandler()->SafelyProcessEvent(event);
1303 }
1304
1305 // ----------------------------------------------------------------------------
1306 // colours, fonts &c
1307 // ----------------------------------------------------------------------------
1308
1309 void wxWindowBase::InheritAttributes()
1310 {
1311     const wxWindowBase * const parent = GetParent();
1312     if ( !parent )
1313         return;
1314
1315     // we only inherit attributes which had been explicitly set for the parent
1316     // which ensures that this only happens if the user really wants it and
1317     // not by default which wouldn't make any sense in modern GUIs where the
1318     // controls don't all use the same fonts (nor colours)
1319     if ( parent->m_inheritFont && !m_hasFont )
1320         SetFont(parent->GetFont());
1321
1322     // in addition, there is a possibility to explicitly forbid inheriting
1323     // colours at each class level by overriding ShouldInheritColours()
1324     if ( ShouldInheritColours() )
1325     {
1326         if ( parent->m_inheritFgCol && !m_hasFgCol )
1327             SetForegroundColour(parent->GetForegroundColour());
1328
1329         // inheriting (solid) background colour is wrong as it totally breaks
1330         // any kind of themed backgrounds
1331         //
1332         // instead, the controls should use the same background as their parent
1333         // (ideally by not drawing it at all)
1334 #if 0
1335         if ( parent->m_inheritBgCol && !m_hasBgCol )
1336             SetBackgroundColour(parent->GetBackgroundColour());
1337 #endif // 0
1338     }
1339 }
1340
1341 /* static */ wxVisualAttributes
1342 wxWindowBase::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1343 {
1344     // it is important to return valid values for all attributes from here,
1345     // GetXXX() below rely on this
1346     wxVisualAttributes attrs;
1347     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
1348     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
1349
1350     // On Smartphone/PocketPC, wxSYS_COLOUR_WINDOW is a better reflection of
1351     // the usual background colour than wxSYS_COLOUR_BTNFACE.
1352     // It's a pity that wxSYS_COLOUR_WINDOW isn't always a suitable background
1353     // colour on other platforms.
1354
1355 #if defined(__WXWINCE__) && (defined(__SMARTPHONE__) || defined(__POCKETPC__))
1356     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1357 #else
1358     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
1359 #endif
1360     return attrs;
1361 }
1362
1363 wxColour wxWindowBase::GetBackgroundColour() const
1364 {
1365     if ( !m_backgroundColour.IsOk() )
1366     {
1367         wxASSERT_MSG( !m_hasBgCol, wxT("we have invalid explicit bg colour?") );
1368
1369         // get our default background colour
1370         wxColour colBg = GetDefaultAttributes().colBg;
1371
1372         // we must return some valid colour to avoid redoing this every time
1373         // and also to avoid surprising the applications written for older
1374         // wxWidgets versions where GetBackgroundColour() always returned
1375         // something -- so give them something even if it doesn't make sense
1376         // for this window (e.g. it has a themed background)
1377         if ( !colBg.Ok() )
1378             colBg = GetClassDefaultAttributes().colBg;
1379
1380         return colBg;
1381     }
1382     else
1383         return m_backgroundColour;
1384 }
1385
1386 wxColour wxWindowBase::GetForegroundColour() const
1387 {
1388     // logic is the same as above
1389     if ( !m_hasFgCol && !m_foregroundColour.Ok() )
1390     {
1391         wxColour colFg = GetDefaultAttributes().colFg;
1392
1393         if ( !colFg.IsOk() )
1394             colFg = GetClassDefaultAttributes().colFg;
1395
1396         return colFg;
1397     }
1398     else
1399         return m_foregroundColour;
1400 }
1401
1402 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
1403 {
1404     if ( colour == m_backgroundColour )
1405         return false;
1406
1407     m_hasBgCol = colour.IsOk();
1408
1409     m_inheritBgCol = m_hasBgCol;
1410     m_backgroundColour = colour;
1411     SetThemeEnabled( !m_hasBgCol && !m_foregroundColour.Ok() );
1412     return true;
1413 }
1414
1415 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
1416 {
1417     if (colour == m_foregroundColour )
1418         return false;
1419
1420     m_hasFgCol = colour.IsOk();
1421     m_inheritFgCol = m_hasFgCol;
1422     m_foregroundColour = colour;
1423     SetThemeEnabled( !m_hasFgCol && !m_backgroundColour.Ok() );
1424     return true;
1425 }
1426
1427 bool wxWindowBase::SetCursor(const wxCursor& cursor)
1428 {
1429     // setting an invalid cursor is ok, it means that we don't have any special
1430     // cursor
1431     if ( m_cursor.IsSameAs(cursor) )
1432     {
1433         // no change
1434         return false;
1435     }
1436
1437     m_cursor = cursor;
1438
1439     return true;
1440 }
1441
1442 wxFont wxWindowBase::GetFont() const
1443 {
1444     // logic is the same as in GetBackgroundColour()
1445     if ( !m_font.IsOk() )
1446     {
1447         wxASSERT_MSG( !m_hasFont, wxT("we have invalid explicit font?") );
1448
1449         wxFont font = GetDefaultAttributes().font;
1450         if ( !font.IsOk() )
1451             font = GetClassDefaultAttributes().font;
1452
1453         return font;
1454     }
1455     else
1456         return m_font;
1457 }
1458
1459 bool wxWindowBase::SetFont(const wxFont& font)
1460 {
1461     if ( font == m_font )
1462     {
1463         // no change
1464         return false;
1465     }
1466
1467     m_font = font;
1468     m_hasFont = font.IsOk();
1469     m_inheritFont = m_hasFont;
1470
1471     InvalidateBestSize();
1472
1473     return true;
1474 }
1475
1476 #if wxUSE_PALETTE
1477
1478 void wxWindowBase::SetPalette(const wxPalette& pal)
1479 {
1480     m_hasCustomPalette = true;
1481     m_palette = pal;
1482
1483     // VZ: can anyone explain me what do we do here?
1484     wxWindowDC d((wxWindow *) this);
1485     d.SetPalette(pal);
1486 }
1487
1488 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
1489 {
1490     wxWindow *win = (wxWindow *)this;
1491     while ( win && !win->HasCustomPalette() )
1492     {
1493         win = win->GetParent();
1494     }
1495
1496     return win;
1497 }
1498
1499 #endif // wxUSE_PALETTE
1500
1501 #if wxUSE_CARET
1502 void wxWindowBase::SetCaret(wxCaret *caret)
1503 {
1504     if ( m_caret )
1505     {
1506         delete m_caret;
1507     }
1508
1509     m_caret = caret;
1510
1511     if ( m_caret )
1512     {
1513         wxASSERT_MSG( m_caret->GetWindow() == this,
1514                       wxT("caret should be created associated to this window") );
1515     }
1516 }
1517 #endif // wxUSE_CARET
1518
1519 #if wxUSE_VALIDATORS
1520 // ----------------------------------------------------------------------------
1521 // validators
1522 // ----------------------------------------------------------------------------
1523
1524 void wxWindowBase::SetValidator(const wxValidator& validator)
1525 {
1526     if ( m_windowValidator )
1527         delete m_windowValidator;
1528
1529     m_windowValidator = (wxValidator *)validator.Clone();
1530
1531     if ( m_windowValidator )
1532         m_windowValidator->SetWindow(this);
1533 }
1534 #endif // wxUSE_VALIDATORS
1535
1536 // ----------------------------------------------------------------------------
1537 // update region stuff
1538 // ----------------------------------------------------------------------------
1539
1540 wxRect wxWindowBase::GetUpdateClientRect() const
1541 {
1542     wxRegion rgnUpdate = GetUpdateRegion();
1543     rgnUpdate.Intersect(GetClientRect());
1544     wxRect rectUpdate = rgnUpdate.GetBox();
1545     wxPoint ptOrigin = GetClientAreaOrigin();
1546     rectUpdate.x -= ptOrigin.x;
1547     rectUpdate.y -= ptOrigin.y;
1548
1549     return rectUpdate;
1550 }
1551
1552 bool wxWindowBase::DoIsExposed(int x, int y) const
1553 {
1554     return m_updateRegion.Contains(x, y) != wxOutRegion;
1555 }
1556
1557 bool wxWindowBase::DoIsExposed(int x, int y, int w, int h) const
1558 {
1559     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
1560 }
1561
1562 void wxWindowBase::ClearBackground()
1563 {
1564     // wxGTK uses its own version, no need to add never used code
1565 #ifndef __WXGTK__
1566     wxClientDC dc((wxWindow *)this);
1567     wxBrush brush(GetBackgroundColour(), wxBRUSHSTYLE_SOLID);
1568     dc.SetBackground(brush);
1569     dc.Clear();
1570 #endif // __WXGTK__
1571 }
1572
1573 // ----------------------------------------------------------------------------
1574 // find child window by id or name
1575 // ----------------------------------------------------------------------------
1576
1577 wxWindow *wxWindowBase::FindWindow(long id) const
1578 {
1579     if ( id == m_windowId )
1580         return (wxWindow *)this;
1581
1582     wxWindowBase *res = NULL;
1583     wxWindowList::compatibility_iterator node;
1584     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1585     {
1586         wxWindowBase *child = node->GetData();
1587         res = child->FindWindow( id );
1588     }
1589
1590     return (wxWindow *)res;
1591 }
1592
1593 wxWindow *wxWindowBase::FindWindow(const wxString& name) const
1594 {
1595     if ( name == m_windowName )
1596         return (wxWindow *)this;
1597
1598     wxWindowBase *res = NULL;
1599     wxWindowList::compatibility_iterator node;
1600     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1601     {
1602         wxWindow *child = node->GetData();
1603         res = child->FindWindow(name);
1604     }
1605
1606     return (wxWindow *)res;
1607 }
1608
1609
1610 // find any window by id or name or label: If parent is non-NULL, look through
1611 // children for a label or title matching the specified string. If NULL, look
1612 // through all top-level windows.
1613 //
1614 // to avoid duplicating code we reuse the same helper function but with
1615 // different comparators
1616
1617 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1618                                 const wxString& label, long id);
1619
1620 static
1621 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1622                            long WXUNUSED(id))
1623 {
1624     return win->GetLabel() == label;
1625 }
1626
1627 static
1628 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1629                           long WXUNUSED(id))
1630 {
1631     return win->GetName() == label;
1632 }
1633
1634 static
1635 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1636                         long id)
1637 {
1638     return win->GetId() == id;
1639 }
1640
1641 // recursive helper for the FindWindowByXXX() functions
1642 static
1643 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1644                                   const wxString& label,
1645                                   long id,
1646                                   wxFindWindowCmp cmp)
1647 {
1648     if ( parent )
1649     {
1650         // see if this is the one we're looking for
1651         if ( (*cmp)(parent, label, id) )
1652             return (wxWindow *)parent;
1653
1654         // It wasn't, so check all its children
1655         for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
1656               node;
1657               node = node->GetNext() )
1658         {
1659             // recursively check each child
1660             wxWindow *win = (wxWindow *)node->GetData();
1661             wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1662             if (retwin)
1663                 return retwin;
1664         }
1665     }
1666
1667     // Not found
1668     return NULL;
1669 }
1670
1671 // helper for FindWindowByXXX()
1672 static
1673 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1674                              const wxString& label,
1675                              long id,
1676                              wxFindWindowCmp cmp)
1677 {
1678     if ( parent )
1679     {
1680         // just check parent and all its children
1681         return wxFindWindowRecursively(parent, label, id, cmp);
1682     }
1683
1684     // start at very top of wx's windows
1685     for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1686           node;
1687           node = node->GetNext() )
1688     {
1689         // recursively check each window & its children
1690         wxWindow *win = node->GetData();
1691         wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1692         if (retwin)
1693             return retwin;
1694     }
1695
1696     return NULL;
1697 }
1698
1699 /* static */
1700 wxWindow *
1701 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1702 {
1703     return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1704 }
1705
1706 /* static */
1707 wxWindow *
1708 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1709 {
1710     wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1711
1712     if ( !win )
1713     {
1714         // fall back to the label
1715         win = FindWindowByLabel(title, parent);
1716     }
1717
1718     return win;
1719 }
1720
1721 /* static */
1722 wxWindow *
1723 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1724 {
1725     return wxFindWindowHelper(parent, wxEmptyString, id, wxFindWindowCmpIds);
1726 }
1727
1728 // ----------------------------------------------------------------------------
1729 // dialog oriented functions
1730 // ----------------------------------------------------------------------------
1731
1732 void wxWindowBase::MakeModal(bool modal)
1733 {
1734     // Disable all other windows
1735     if ( IsTopLevel() )
1736     {
1737         wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1738         while (node)
1739         {
1740             wxWindow *win = node->GetData();
1741             if (win != this)
1742                 win->Enable(!modal);
1743
1744             node = node->GetNext();
1745         }
1746     }
1747 }
1748
1749 bool wxWindowBase::Validate()
1750 {
1751 #if wxUSE_VALIDATORS
1752     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1753
1754     wxWindowList::compatibility_iterator node;
1755     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1756     {
1757         wxWindowBase *child = node->GetData();
1758         wxValidator *validator = child->GetValidator();
1759         if ( validator && !validator->Validate((wxWindow *)this) )
1760         {
1761             return false;
1762         }
1763
1764         if ( recurse && !child->Validate() )
1765         {
1766             return false;
1767         }
1768     }
1769 #endif // wxUSE_VALIDATORS
1770
1771     return true;
1772 }
1773
1774 bool wxWindowBase::TransferDataToWindow()
1775 {
1776 #if wxUSE_VALIDATORS
1777     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1778
1779     wxWindowList::compatibility_iterator node;
1780     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1781     {
1782         wxWindowBase *child = node->GetData();
1783         wxValidator *validator = child->GetValidator();
1784         if ( validator && !validator->TransferToWindow() )
1785         {
1786             wxLogWarning(_("Could not transfer data to window"));
1787 #if wxUSE_LOG
1788             wxLog::FlushActive();
1789 #endif // wxUSE_LOG
1790
1791             return false;
1792         }
1793
1794         if ( recurse )
1795         {
1796             if ( !child->TransferDataToWindow() )
1797             {
1798                 // warning already given
1799                 return false;
1800             }
1801         }
1802     }
1803 #endif // wxUSE_VALIDATORS
1804
1805     return true;
1806 }
1807
1808 bool wxWindowBase::TransferDataFromWindow()
1809 {
1810 #if wxUSE_VALIDATORS
1811     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1812
1813     wxWindowList::compatibility_iterator node;
1814     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1815     {
1816         wxWindow *child = node->GetData();
1817         wxValidator *validator = child->GetValidator();
1818         if ( validator && !validator->TransferFromWindow() )
1819         {
1820             // nop warning here because the application is supposed to give
1821             // one itself - we don't know here what might have gone wrongly
1822
1823             return false;
1824         }
1825
1826         if ( recurse )
1827         {
1828             if ( !child->TransferDataFromWindow() )
1829             {
1830                 // warning already given
1831                 return false;
1832             }
1833         }
1834     }
1835 #endif // wxUSE_VALIDATORS
1836
1837     return true;
1838 }
1839
1840 void wxWindowBase::InitDialog()
1841 {
1842     wxInitDialogEvent event(GetId());
1843     event.SetEventObject( this );
1844     GetEventHandler()->ProcessEvent(event);
1845 }
1846
1847 // ----------------------------------------------------------------------------
1848 // context-sensitive help support
1849 // ----------------------------------------------------------------------------
1850
1851 #if wxUSE_HELP
1852
1853 // associate this help text with this window
1854 void wxWindowBase::SetHelpText(const wxString& text)
1855 {
1856     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1857     if ( helpProvider )
1858     {
1859         helpProvider->AddHelp(this, text);
1860     }
1861 }
1862
1863 #if WXWIN_COMPATIBILITY_2_8
1864 // associate this help text with all windows with the same id as this
1865 // one
1866 void wxWindowBase::SetHelpTextForId(const wxString& text)
1867 {
1868     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1869     if ( helpProvider )
1870     {
1871         helpProvider->AddHelp(GetId(), text);
1872     }
1873 }
1874 #endif // WXWIN_COMPATIBILITY_2_8
1875
1876 // get the help string associated with this window (may be empty)
1877 // default implementation forwards calls to the help provider
1878 wxString
1879 wxWindowBase::GetHelpTextAtPoint(const wxPoint & WXUNUSED(pt),
1880                                  wxHelpEvent::Origin WXUNUSED(origin)) const
1881 {
1882     wxString text;
1883     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1884     if ( helpProvider )
1885     {
1886         text = helpProvider->GetHelp(this);
1887     }
1888
1889     return text;
1890 }
1891
1892 // show help for this window
1893 void wxWindowBase::OnHelp(wxHelpEvent& event)
1894 {
1895     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1896     if ( helpProvider )
1897     {
1898         wxPoint pos = event.GetPosition();
1899         const wxHelpEvent::Origin origin = event.GetOrigin();
1900         if ( origin == wxHelpEvent::Origin_Keyboard )
1901         {
1902             // if the help event was generated from keyboard it shouldn't
1903             // appear at the mouse position (which is still the only position
1904             // associated with help event) if the mouse is far away, although
1905             // we still do use the mouse position if it's over the window
1906             // because we suppose the user looks approximately at the mouse
1907             // already and so it would be more convenient than showing tooltip
1908             // at some arbitrary position which can be quite far from it
1909             const wxRect rectClient = GetClientRect();
1910             if ( !rectClient.Contains(ScreenToClient(pos)) )
1911             {
1912                 // position help slightly under and to the right of this window
1913                 pos = ClientToScreen(wxPoint(
1914                         2*GetCharWidth(),
1915                         rectClient.height + GetCharHeight()
1916                       ));
1917             }
1918         }
1919
1920         if ( helpProvider->ShowHelpAtPoint(this, pos, origin) )
1921         {
1922             // skip the event.Skip() below
1923             return;
1924         }
1925     }
1926
1927     event.Skip();
1928 }
1929
1930 #endif // wxUSE_HELP
1931
1932 // ----------------------------------------------------------------------------
1933 // tooltips
1934 // ----------------------------------------------------------------------------
1935
1936 #if wxUSE_TOOLTIPS
1937
1938 wxString wxWindowBase::GetToolTipText() const
1939 {
1940     return m_tooltip ? m_tooltip->GetTip() : wxString();
1941 }
1942
1943 void wxWindowBase::SetToolTip( const wxString &tip )
1944 {
1945     // don't create the new tooltip if we already have one
1946     if ( m_tooltip )
1947     {
1948         m_tooltip->SetTip( tip );
1949     }
1950     else
1951     {
1952         SetToolTip( new wxToolTip( tip ) );
1953     }
1954
1955     // setting empty tooltip text does not remove the tooltip any more - use
1956     // SetToolTip(NULL) for this
1957 }
1958
1959 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1960 {
1961     if ( m_tooltip != tooltip )
1962     {
1963         if ( m_tooltip )
1964             delete m_tooltip;
1965
1966         m_tooltip = tooltip;
1967     }
1968 }
1969
1970 #endif // wxUSE_TOOLTIPS
1971
1972 // ----------------------------------------------------------------------------
1973 // constraints and sizers
1974 // ----------------------------------------------------------------------------
1975
1976 #if wxUSE_CONSTRAINTS
1977
1978 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1979 {
1980     if ( m_constraints )
1981     {
1982         UnsetConstraints(m_constraints);
1983         delete m_constraints;
1984     }
1985     m_constraints = constraints;
1986     if ( m_constraints )
1987     {
1988         // Make sure other windows know they're part of a 'meaningful relationship'
1989         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1990             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1991         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1992             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1993         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1994             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1995         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1996             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1997         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1998             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1999         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
2000             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
2001         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
2002             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
2003         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
2004             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
2005     }
2006 }
2007
2008 // This removes any dangling pointers to this window in other windows'
2009 // constraintsInvolvedIn lists.
2010 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
2011 {
2012     if ( c )
2013     {
2014         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
2015             c->left.GetOtherWindow()->RemoveConstraintReference(this);
2016         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
2017             c->top.GetOtherWindow()->RemoveConstraintReference(this);
2018         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
2019             c->right.GetOtherWindow()->RemoveConstraintReference(this);
2020         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
2021             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
2022         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
2023             c->width.GetOtherWindow()->RemoveConstraintReference(this);
2024         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
2025             c->height.GetOtherWindow()->RemoveConstraintReference(this);
2026         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
2027             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
2028         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
2029             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
2030     }
2031 }
2032
2033 // Back-pointer to other windows we're involved with, so if we delete this
2034 // window, we must delete any constraints we're involved with.
2035 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
2036 {
2037     if ( !m_constraintsInvolvedIn )
2038         m_constraintsInvolvedIn = new wxWindowList;
2039     if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
2040         m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
2041 }
2042
2043 // REMOVE back-pointer to other windows we're involved with.
2044 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
2045 {
2046     if ( m_constraintsInvolvedIn )
2047         m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
2048 }
2049
2050 // Reset any constraints that mention this window
2051 void wxWindowBase::DeleteRelatedConstraints()
2052 {
2053     if ( m_constraintsInvolvedIn )
2054     {
2055         wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
2056         while (node)
2057         {
2058             wxWindow *win = node->GetData();
2059             wxLayoutConstraints *constr = win->GetConstraints();
2060
2061             // Reset any constraints involving this window
2062             if ( constr )
2063             {
2064                 constr->left.ResetIfWin(this);
2065                 constr->top.ResetIfWin(this);
2066                 constr->right.ResetIfWin(this);
2067                 constr->bottom.ResetIfWin(this);
2068                 constr->width.ResetIfWin(this);
2069                 constr->height.ResetIfWin(this);
2070                 constr->centreX.ResetIfWin(this);
2071                 constr->centreY.ResetIfWin(this);
2072             }
2073
2074             wxWindowList::compatibility_iterator next = node->GetNext();
2075             m_constraintsInvolvedIn->Erase(node);
2076             node = next;
2077         }
2078
2079         delete m_constraintsInvolvedIn;
2080         m_constraintsInvolvedIn = NULL;
2081     }
2082 }
2083
2084 #endif // wxUSE_CONSTRAINTS
2085
2086 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
2087 {
2088     if ( sizer == m_windowSizer)
2089         return;
2090
2091     if ( m_windowSizer )
2092     {
2093         m_windowSizer->SetContainingWindow(NULL);
2094
2095         if ( deleteOld )
2096             delete m_windowSizer;
2097     }
2098
2099     m_windowSizer = sizer;
2100     if ( m_windowSizer )
2101     {
2102         m_windowSizer->SetContainingWindow((wxWindow *)this);
2103     }
2104
2105     SetAutoLayout(m_windowSizer != NULL);
2106 }
2107
2108 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
2109 {
2110     SetSizer( sizer, deleteOld );
2111     sizer->SetSizeHints( (wxWindow*) this );
2112 }
2113
2114
2115 void wxWindowBase::SetContainingSizer(wxSizer* sizer)
2116 {
2117     // adding a window to a sizer twice is going to result in fatal and
2118     // hard to debug problems later because when deleting the second
2119     // associated wxSizerItem we're going to dereference a dangling
2120     // pointer; so try to detect this as early as possible
2121     wxASSERT_MSG( !sizer || m_containingSizer != sizer,
2122                   wxT("Adding a window to the same sizer twice?") );
2123
2124     m_containingSizer = sizer;
2125 }
2126
2127 #if wxUSE_CONSTRAINTS
2128
2129 void wxWindowBase::SatisfyConstraints()
2130 {
2131     wxLayoutConstraints *constr = GetConstraints();
2132     bool wasOk = constr && constr->AreSatisfied();
2133
2134     ResetConstraints();   // Mark all constraints as unevaluated
2135
2136     int noChanges = 1;
2137
2138     // if we're a top level panel (i.e. our parent is frame/dialog), our
2139     // own constraints will never be satisfied any more unless we do it
2140     // here
2141     if ( wasOk )
2142     {
2143         while ( noChanges > 0 )
2144         {
2145             LayoutPhase1(&noChanges);
2146         }
2147     }
2148
2149     LayoutPhase2(&noChanges);
2150 }
2151
2152 #endif // wxUSE_CONSTRAINTS
2153
2154 bool wxWindowBase::Layout()
2155 {
2156     // If there is a sizer, use it instead of the constraints
2157     if ( GetSizer() )
2158     {
2159         int w = 0, h = 0;
2160         GetVirtualSize(&w, &h);
2161         GetSizer()->SetDimension( 0, 0, w, h );
2162     }
2163 #if wxUSE_CONSTRAINTS
2164     else
2165     {
2166         SatisfyConstraints(); // Find the right constraints values
2167         SetConstraintSizes(); // Recursively set the real window sizes
2168     }
2169 #endif
2170
2171     return true;
2172 }
2173
2174 void wxWindowBase::InternalOnSize(wxSizeEvent& event)
2175 {
2176     if ( GetAutoLayout() )
2177         Layout();
2178
2179     event.Skip();
2180 }
2181
2182 #if wxUSE_CONSTRAINTS
2183
2184 // first phase of the constraints evaluation: set our own constraints
2185 bool wxWindowBase::LayoutPhase1(int *noChanges)
2186 {
2187     wxLayoutConstraints *constr = GetConstraints();
2188
2189     return !constr || constr->SatisfyConstraints(this, noChanges);
2190 }
2191
2192 // second phase: set the constraints for our children
2193 bool wxWindowBase::LayoutPhase2(int *noChanges)
2194 {
2195     *noChanges = 0;
2196
2197     // Layout children
2198     DoPhase(1);
2199
2200     // Layout grand children
2201     DoPhase(2);
2202
2203     return true;
2204 }
2205
2206 // Do a phase of evaluating child constraints
2207 bool wxWindowBase::DoPhase(int phase)
2208 {
2209     // the list containing the children for which the constraints are already
2210     // set correctly
2211     wxWindowList succeeded;
2212
2213     // the max number of iterations we loop before concluding that we can't set
2214     // the constraints
2215     static const int maxIterations = 500;
2216
2217     for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
2218     {
2219         int noChanges = 0;
2220
2221         // loop over all children setting their constraints
2222         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2223               node;
2224               node = node->GetNext() )
2225         {
2226             wxWindow *child = node->GetData();
2227             if ( child->IsTopLevel() )
2228             {
2229                 // top level children are not inside our client area
2230                 continue;
2231             }
2232
2233             if ( !child->GetConstraints() || succeeded.Find(child) )
2234             {
2235                 // this one is either already ok or nothing we can do about it
2236                 continue;
2237             }
2238
2239             int tempNoChanges = 0;
2240             bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
2241                                       : child->LayoutPhase2(&tempNoChanges);
2242             noChanges += tempNoChanges;
2243
2244             if ( success )
2245             {
2246                 succeeded.Append(child);
2247             }
2248         }
2249
2250         if ( !noChanges )
2251         {
2252             // constraints are set
2253             break;
2254         }
2255     }
2256
2257     return true;
2258 }
2259
2260 void wxWindowBase::ResetConstraints()
2261 {
2262     wxLayoutConstraints *constr = GetConstraints();
2263     if ( constr )
2264     {
2265         constr->left.SetDone(false);
2266         constr->top.SetDone(false);
2267         constr->right.SetDone(false);
2268         constr->bottom.SetDone(false);
2269         constr->width.SetDone(false);
2270         constr->height.SetDone(false);
2271         constr->centreX.SetDone(false);
2272         constr->centreY.SetDone(false);
2273     }
2274
2275     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2276     while (node)
2277     {
2278         wxWindow *win = node->GetData();
2279         if ( !win->IsTopLevel() )
2280             win->ResetConstraints();
2281         node = node->GetNext();
2282     }
2283 }
2284
2285 // Need to distinguish between setting the 'fake' size for windows and sizers,
2286 // and setting the real values.
2287 void wxWindowBase::SetConstraintSizes(bool recurse)
2288 {
2289     wxLayoutConstraints *constr = GetConstraints();
2290     if ( constr && constr->AreSatisfied() )
2291     {
2292         int x = constr->left.GetValue();
2293         int y = constr->top.GetValue();
2294         int w = constr->width.GetValue();
2295         int h = constr->height.GetValue();
2296
2297         if ( (constr->width.GetRelationship() != wxAsIs ) ||
2298              (constr->height.GetRelationship() != wxAsIs) )
2299         {
2300             SetSize(x, y, w, h);
2301         }
2302         else
2303         {
2304             // If we don't want to resize this window, just move it...
2305             Move(x, y);
2306         }
2307     }
2308     else if ( constr )
2309     {
2310         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
2311                    GetClassInfo()->GetClassName(),
2312                    GetName().c_str());
2313     }
2314
2315     if ( recurse )
2316     {
2317         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2318         while (node)
2319         {
2320             wxWindow *win = node->GetData();
2321             if ( !win->IsTopLevel() && win->GetConstraints() )
2322                 win->SetConstraintSizes();
2323             node = node->GetNext();
2324         }
2325     }
2326 }
2327
2328 // Only set the size/position of the constraint (if any)
2329 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
2330 {
2331     wxLayoutConstraints *constr = GetConstraints();
2332     if ( constr )
2333     {
2334         if ( x != wxDefaultCoord )
2335         {
2336             constr->left.SetValue(x);
2337             constr->left.SetDone(true);
2338         }
2339         if ( y != wxDefaultCoord )
2340         {
2341             constr->top.SetValue(y);
2342             constr->top.SetDone(true);
2343         }
2344         if ( w != wxDefaultCoord )
2345         {
2346             constr->width.SetValue(w);
2347             constr->width.SetDone(true);
2348         }
2349         if ( h != wxDefaultCoord )
2350         {
2351             constr->height.SetValue(h);
2352             constr->height.SetDone(true);
2353         }
2354     }
2355 }
2356
2357 void wxWindowBase::MoveConstraint(int x, int y)
2358 {
2359     wxLayoutConstraints *constr = GetConstraints();
2360     if ( constr )
2361     {
2362         if ( x != wxDefaultCoord )
2363         {
2364             constr->left.SetValue(x);
2365             constr->left.SetDone(true);
2366         }
2367         if ( y != wxDefaultCoord )
2368         {
2369             constr->top.SetValue(y);
2370             constr->top.SetDone(true);
2371         }
2372     }
2373 }
2374
2375 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
2376 {
2377     wxLayoutConstraints *constr = GetConstraints();
2378     if ( constr )
2379     {
2380         *w = constr->width.GetValue();
2381         *h = constr->height.GetValue();
2382     }
2383     else
2384         GetSize(w, h);
2385 }
2386
2387 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
2388 {
2389     wxLayoutConstraints *constr = GetConstraints();
2390     if ( constr )
2391     {
2392         *w = constr->width.GetValue();
2393         *h = constr->height.GetValue();
2394     }
2395     else
2396         GetClientSize(w, h);
2397 }
2398
2399 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
2400 {
2401     wxLayoutConstraints *constr = GetConstraints();
2402     if ( constr )
2403     {
2404         *x = constr->left.GetValue();
2405         *y = constr->top.GetValue();
2406     }
2407     else
2408         GetPosition(x, y);
2409 }
2410
2411 #endif // wxUSE_CONSTRAINTS
2412
2413 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
2414 {
2415     // don't do it for the dialogs/frames - they float independently of their
2416     // parent
2417     if ( !IsTopLevel() )
2418     {
2419         wxWindow *parent = GetParent();
2420         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
2421         {
2422             wxPoint pt(parent->GetClientAreaOrigin());
2423             x += pt.x;
2424             y += pt.y;
2425         }
2426     }
2427 }
2428
2429 // ----------------------------------------------------------------------------
2430 // Update UI processing
2431 // ----------------------------------------------------------------------------
2432
2433 void wxWindowBase::UpdateWindowUI(long flags)
2434 {
2435     wxUpdateUIEvent event(GetId());
2436     event.SetEventObject(this);
2437
2438     if ( GetEventHandler()->ProcessEvent(event) )
2439     {
2440         DoUpdateWindowUI(event);
2441     }
2442
2443     if (flags & wxUPDATE_UI_RECURSE)
2444     {
2445         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2446         while (node)
2447         {
2448             wxWindow* child = (wxWindow*) node->GetData();
2449             child->UpdateWindowUI(flags);
2450             node = node->GetNext();
2451         }
2452     }
2453 }
2454
2455 // do the window-specific processing after processing the update event
2456 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
2457 {
2458     if ( event.GetSetEnabled() )
2459         Enable(event.GetEnabled());
2460
2461     if ( event.GetSetShown() )
2462         Show(event.GetShown());
2463 }
2464
2465 // ----------------------------------------------------------------------------
2466 // dialog units translations
2467 // ----------------------------------------------------------------------------
2468
2469 // Windows' computes dialog units using average character width over upper-
2470 // and lower-case ASCII alphabet and not using the average character width
2471 // metadata stored in the font; see
2472 // http://support.microsoft.com/default.aspx/kb/145994 for detailed discussion.
2473 // It's important that we perform the conversion in identical way, because
2474 // dialog units natively exist only on Windows and Windows HIG is expressed
2475 // using them.
2476 wxSize wxWindowBase::GetDlgUnitBase() const
2477 {
2478     const wxWindow *parent = wxGetTopLevelParent((wxWindow*)this);
2479
2480     if ( !parent->m_font.IsOk() )
2481     {
2482         // Default GUI font is used. This is the most common case, so
2483         // cache the results.
2484         static wxSize s_defFontSize;
2485         if ( s_defFontSize.x == 0 )
2486             s_defFontSize = wxPrivate::GetAverageASCIILetterSize(*parent);
2487         return s_defFontSize;
2488     }
2489     else
2490     {
2491         // Custom font, we always need to compute the result
2492         return wxPrivate::GetAverageASCIILetterSize(*parent);
2493     }
2494 }
2495
2496 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt) const
2497 {
2498     const wxSize base = GetDlgUnitBase();
2499
2500     // NB: wxMulDivInt32() is used, because it correctly rounds the result
2501
2502     wxPoint pt2 = wxDefaultPosition;
2503     if (pt.x != wxDefaultCoord)
2504         pt2.x = wxMulDivInt32(pt.x, 4, base.x);
2505     if (pt.y != wxDefaultCoord)
2506         pt2.y = wxMulDivInt32(pt.y, 8, base.y);
2507
2508     return pt2;
2509 }
2510
2511 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt) const
2512 {
2513     const wxSize base = GetDlgUnitBase();
2514
2515     wxPoint pt2 = wxDefaultPosition;
2516     if (pt.x != wxDefaultCoord)
2517         pt2.x = wxMulDivInt32(pt.x, base.x, 4);
2518     if (pt.y != wxDefaultCoord)
2519         pt2.y = wxMulDivInt32(pt.y, base.y, 8);
2520
2521     return pt2;
2522 }
2523
2524 // ----------------------------------------------------------------------------
2525 // event handlers
2526 // ----------------------------------------------------------------------------
2527
2528 // propagate the colour change event to the subwindows
2529 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& WXUNUSED(event))
2530 {
2531     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2532     while ( node )
2533     {
2534         // Only propagate to non-top-level windows
2535         wxWindow *win = node->GetData();
2536         if ( !win->IsTopLevel() )
2537         {
2538             wxSysColourChangedEvent event2;
2539             event2.SetEventObject(win);
2540             win->GetEventHandler()->ProcessEvent(event2);
2541         }
2542
2543         node = node->GetNext();
2544     }
2545
2546     Refresh();
2547 }
2548
2549 // the default action is to populate dialog with data when it's created,
2550 // and nudge the UI into displaying itself correctly in case
2551 // we've turned the wxUpdateUIEvents frequency down low.
2552 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
2553 {
2554     TransferDataToWindow();
2555
2556     // Update the UI at this point
2557     UpdateWindowUI(wxUPDATE_UI_RECURSE);
2558 }
2559
2560 // ----------------------------------------------------------------------------
2561 // menu-related functions
2562 // ----------------------------------------------------------------------------
2563
2564 #if wxUSE_MENUS
2565
2566 bool wxWindowBase::PopupMenu(wxMenu *menu, int x, int y)
2567 {
2568     wxCHECK_MSG( menu, false, "can't popup NULL menu" );
2569
2570     wxCurrentPopupMenu = menu;
2571     const bool rc = DoPopupMenu(menu, x, y);
2572     wxCurrentPopupMenu = NULL;
2573
2574     return rc;
2575 }
2576
2577 // this is used to pass the id of the selected item from the menu event handler
2578 // to the main function itself
2579 //
2580 // it's ok to use a global here as there can be at most one popup menu shown at
2581 // any time
2582 static int gs_popupMenuSelection = wxID_NONE;
2583
2584 void wxWindowBase::InternalOnPopupMenu(wxCommandEvent& event)
2585 {
2586     // store the id in a global variable where we'll retrieve it from later
2587     gs_popupMenuSelection = event.GetId();
2588 }
2589
2590 void wxWindowBase::InternalOnPopupMenuUpdate(wxUpdateUIEvent& WXUNUSED(event))
2591 {
2592     // nothing to do but do not skip it
2593 }
2594
2595 int
2596 wxWindowBase::DoGetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y)
2597 {
2598     gs_popupMenuSelection = wxID_NONE;
2599
2600     Connect(wxEVT_COMMAND_MENU_SELECTED,
2601             wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2602             NULL,
2603             this);
2604
2605     // it is common to construct the menu passed to this function dynamically
2606     // using some fixed range of ids which could clash with the ids used
2607     // elsewhere in the program, which could result in some menu items being
2608     // unintentionally disabled or otherwise modified by update UI handlers
2609     // elsewhere in the program code and this is difficult to avoid in the
2610     // program itself, so instead we just temporarily suspend UI updating while
2611     // this menu is shown
2612     Connect(wxEVT_UPDATE_UI,
2613             wxUpdateUIEventHandler(wxWindowBase::InternalOnPopupMenuUpdate),
2614             NULL,
2615             this);
2616
2617     PopupMenu(&menu, x, y);
2618
2619     Disconnect(wxEVT_UPDATE_UI,
2620                wxUpdateUIEventHandler(wxWindowBase::InternalOnPopupMenuUpdate),
2621                NULL,
2622                this);
2623     Disconnect(wxEVT_COMMAND_MENU_SELECTED,
2624                wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2625                NULL,
2626                this);
2627
2628     return gs_popupMenuSelection;
2629 }
2630
2631 #endif // wxUSE_MENUS
2632
2633 // methods for drawing the sizers in a visible way: this is currently only
2634 // enabled for "full debug" builds with wxDEBUG_LEVEL==2 as it doesn't work
2635 // that well and also because we don't want to leave it enabled in default
2636 // builds used for production
2637 #if wxDEBUG_LEVEL > 1
2638
2639 static void DrawSizers(wxWindowBase *win);
2640
2641 static void DrawBorder(wxWindowBase *win, const wxRect& rect, bool fill, const wxPen* pen)
2642 {
2643     wxClientDC dc((wxWindow *)win);
2644     dc.SetPen(*pen);
2645     dc.SetBrush(fill ? wxBrush(pen->GetColour(), wxBRUSHSTYLE_CROSSDIAG_HATCH) :
2646                        *wxTRANSPARENT_BRUSH);
2647     dc.DrawRectangle(rect.Deflate(1, 1));
2648 }
2649
2650 static void DrawSizer(wxWindowBase *win, wxSizer *sizer)
2651 {
2652     const wxSizerItemList& items = sizer->GetChildren();
2653     for ( wxSizerItemList::const_iterator i = items.begin(),
2654                                         end = items.end();
2655           i != end;
2656           ++i )
2657     {
2658         wxSizerItem *item = *i;
2659         if ( item->IsSizer() )
2660         {
2661             DrawBorder(win, item->GetRect().Deflate(2), false, wxRED_PEN);
2662             DrawSizer(win, item->GetSizer());
2663         }
2664         else if ( item->IsSpacer() )
2665         {
2666             DrawBorder(win, item->GetRect().Deflate(2), true, wxBLUE_PEN);
2667         }
2668         else if ( item->IsWindow() )
2669         {
2670             DrawSizers(item->GetWindow());
2671         }
2672         else
2673             wxFAIL_MSG("inconsistent wxSizerItem status!");
2674     }
2675 }
2676
2677 static void DrawSizers(wxWindowBase *win)
2678 {
2679     DrawBorder(win, win->GetClientSize(), false, wxGREEN_PEN);
2680
2681     wxSizer *sizer = win->GetSizer();
2682     if ( sizer )
2683     {
2684         DrawSizer(win, sizer);
2685     }
2686     else // no sizer, still recurse into the children
2687     {
2688         const wxWindowList& children = win->GetChildren();
2689         for ( wxWindowList::const_iterator i = children.begin(),
2690                                          end = children.end();
2691               i != end;
2692               ++i )
2693         {
2694             DrawSizers(*i);
2695         }
2696
2697         // show all kind of sizes of this window; see the "window sizing" topic
2698         // overview for more info about the various differences:
2699         wxSize fullSz = win->GetSize();
2700         wxSize clientSz = win->GetClientSize();
2701         wxSize bestSz = win->GetBestSize();
2702         wxSize minSz = win->GetMinSize();
2703         wxSize maxSz = win->GetMaxSize();
2704         wxSize virtualSz = win->GetVirtualSize();
2705
2706         wxMessageOutputDebug dbgout;
2707         dbgout.Printf(
2708             "%-10s => fullsz=%4d;%-4d  clientsz=%4d;%-4d  bestsz=%4d;%-4d  minsz=%4d;%-4d  maxsz=%4d;%-4d virtualsz=%4d;%-4d\n",
2709             win->GetName(),
2710             fullSz.x, fullSz.y,
2711             clientSz.x, clientSz.y,
2712             bestSz.x, bestSz.y,
2713             minSz.x, minSz.y,
2714             maxSz.x, maxSz.y,
2715             virtualSz.x, virtualSz.y);
2716     }
2717 }
2718
2719 #endif // wxDEBUG_LEVEL
2720
2721 // process special middle clicks
2722 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
2723 {
2724     if ( event.ControlDown() && event.AltDown() )
2725     {
2726 #if wxDEBUG_LEVEL > 1
2727         // Ctrl-Alt-Shift-mclick makes the sizers visible in debug builds
2728         if ( event.ShiftDown() )
2729         {
2730             DrawSizers(this);
2731         }
2732         else
2733 #endif // __WXDEBUG__
2734         {
2735             // just Ctrl-Alt-middle click shows information about wx version
2736             ::wxInfoMessageBox((wxWindow*)this);
2737         }
2738     }
2739     else
2740     {
2741         event.Skip();
2742     }
2743 }
2744
2745 // ----------------------------------------------------------------------------
2746 // accessibility
2747 // ----------------------------------------------------------------------------
2748
2749 #if wxUSE_ACCESSIBILITY
2750 void wxWindowBase::SetAccessible(wxAccessible* accessible)
2751 {
2752     if (m_accessible && (accessible != m_accessible))
2753         delete m_accessible;
2754     m_accessible = accessible;
2755     if (m_accessible)
2756         m_accessible->SetWindow((wxWindow*) this);
2757 }
2758
2759 // Returns the accessible object, creating if necessary.
2760 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2761 {
2762     if (!m_accessible)
2763         m_accessible = CreateAccessible();
2764     return m_accessible;
2765 }
2766
2767 // Override to create a specific accessible object.
2768 wxAccessible* wxWindowBase::CreateAccessible()
2769 {
2770     return new wxWindowAccessible((wxWindow*) this);
2771 }
2772
2773 #endif
2774
2775 // ----------------------------------------------------------------------------
2776 // list classes implementation
2777 // ----------------------------------------------------------------------------
2778
2779 #if wxUSE_STL
2780
2781 #include "wx/listimpl.cpp"
2782 WX_DEFINE_LIST(wxWindowList)
2783
2784 #else // !wxUSE_STL
2785
2786 void wxWindowListNode::DeleteData()
2787 {
2788     delete (wxWindow *)GetData();
2789 }
2790
2791 #endif // wxUSE_STL/!wxUSE_STL
2792
2793 // ----------------------------------------------------------------------------
2794 // borders
2795 // ----------------------------------------------------------------------------
2796
2797 wxBorder wxWindowBase::GetBorder(long flags) const
2798 {
2799     wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2800     if ( border == wxBORDER_DEFAULT )
2801     {
2802         border = GetDefaultBorder();
2803     }
2804     else if ( border == wxBORDER_THEME )
2805     {
2806         border = GetDefaultBorderForControl();
2807     }
2808
2809     return border;
2810 }
2811
2812 wxBorder wxWindowBase::GetDefaultBorder() const
2813 {
2814     return wxBORDER_NONE;
2815 }
2816
2817 // ----------------------------------------------------------------------------
2818 // hit testing
2819 // ----------------------------------------------------------------------------
2820
2821 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2822 {
2823     // here we just check if the point is inside the window or not
2824
2825     // check the top and left border first
2826     bool outside = x < 0 || y < 0;
2827     if ( !outside )
2828     {
2829         // check the right and bottom borders too
2830         wxSize size = GetSize();
2831         outside = x >= size.x || y >= size.y;
2832     }
2833
2834     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2835 }
2836
2837 // ----------------------------------------------------------------------------
2838 // mouse capture
2839 // ----------------------------------------------------------------------------
2840
2841 struct WXDLLEXPORT wxWindowNext
2842 {
2843     wxWindow *win;
2844     wxWindowNext *next;
2845 } *wxWindowBase::ms_winCaptureNext = NULL;
2846 wxWindow *wxWindowBase::ms_winCaptureCurrent = NULL;
2847 bool wxWindowBase::ms_winCaptureChanging = false;
2848
2849 void wxWindowBase::CaptureMouse()
2850 {
2851     wxLogTrace(wxT("mousecapture"), wxT("CaptureMouse(%p)"), static_cast<void*>(this));
2852
2853     wxASSERT_MSG( !ms_winCaptureChanging, wxT("recursive CaptureMouse call?") );
2854
2855     ms_winCaptureChanging = true;
2856
2857     wxWindow *winOld = GetCapture();
2858     if ( winOld )
2859     {
2860         ((wxWindowBase*) winOld)->DoReleaseMouse();
2861
2862         // save it on stack
2863         wxWindowNext *item = new wxWindowNext;
2864         item->win = winOld;
2865         item->next = ms_winCaptureNext;
2866         ms_winCaptureNext = item;
2867     }
2868     //else: no mouse capture to save
2869
2870     DoCaptureMouse();
2871     ms_winCaptureCurrent = (wxWindow*)this;
2872
2873     ms_winCaptureChanging = false;
2874 }
2875
2876 void wxWindowBase::ReleaseMouse()
2877 {
2878     wxLogTrace(wxT("mousecapture"), wxT("ReleaseMouse(%p)"), static_cast<void*>(this));
2879
2880     wxASSERT_MSG( !ms_winCaptureChanging, wxT("recursive ReleaseMouse call?") );
2881
2882     wxASSERT_MSG( GetCapture() == this,
2883                   "attempt to release mouse, but this window hasn't captured it" );
2884     wxASSERT_MSG( ms_winCaptureCurrent == this,
2885                   "attempt to release mouse, but this window hasn't captured it" );
2886
2887     ms_winCaptureChanging = true;
2888
2889     DoReleaseMouse();
2890     ms_winCaptureCurrent = NULL;
2891
2892     if ( ms_winCaptureNext )
2893     {
2894         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2895         ms_winCaptureCurrent = ms_winCaptureNext->win;
2896
2897         wxWindowNext *item = ms_winCaptureNext;
2898         ms_winCaptureNext = item->next;
2899         delete item;
2900     }
2901     //else: stack is empty, no previous capture
2902
2903     ms_winCaptureChanging = false;
2904
2905     wxLogTrace(wxT("mousecapture"),
2906         (const wxChar *) wxT("After ReleaseMouse() mouse is captured by %p"),
2907         static_cast<void*>(GetCapture()));
2908 }
2909
2910 static void DoNotifyWindowAboutCaptureLost(wxWindow *win)
2911 {
2912     wxMouseCaptureLostEvent event(win->GetId());
2913     event.SetEventObject(win);
2914     if ( !win->GetEventHandler()->ProcessEvent(event) )
2915     {
2916         // windows must handle this event, otherwise the app wouldn't behave
2917         // correctly if it loses capture unexpectedly; see the discussion here:
2918         // http://sourceforge.net/tracker/index.php?func=detail&aid=1153662&group_id=9863&atid=109863
2919         // http://article.gmane.org/gmane.comp.lib.wxwidgets.devel/82376
2920         wxFAIL_MSG( wxT("window that captured the mouse didn't process wxEVT_MOUSE_CAPTURE_LOST") );
2921     }
2922 }
2923
2924 /* static */
2925 void wxWindowBase::NotifyCaptureLost()
2926 {
2927     // don't do anything if capture lost was expected, i.e. resulted from
2928     // a wx call to ReleaseMouse or CaptureMouse:
2929     if ( ms_winCaptureChanging )
2930         return;
2931
2932     // if the capture was lost unexpectedly, notify every window that has
2933     // capture (on stack or current) about it and clear the stack:
2934
2935     if ( ms_winCaptureCurrent )
2936     {
2937         DoNotifyWindowAboutCaptureLost(ms_winCaptureCurrent);
2938         ms_winCaptureCurrent = NULL;
2939     }
2940
2941     while ( ms_winCaptureNext )
2942     {
2943         wxWindowNext *item = ms_winCaptureNext;
2944         ms_winCaptureNext = item->next;
2945
2946         DoNotifyWindowAboutCaptureLost(item->win);
2947
2948         delete item;
2949     }
2950 }
2951
2952 #if wxUSE_HOTKEY
2953
2954 bool
2955 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2956                              int WXUNUSED(modifiers),
2957                              int WXUNUSED(keycode))
2958 {
2959     // not implemented
2960     return false;
2961 }
2962
2963 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2964 {
2965     // not implemented
2966     return false;
2967 }
2968
2969 #endif // wxUSE_HOTKEY
2970
2971 // ----------------------------------------------------------------------------
2972 // event processing
2973 // ----------------------------------------------------------------------------
2974
2975 bool wxWindowBase::TryBefore(wxEvent& event)
2976 {
2977 #if wxUSE_VALIDATORS
2978     // Can only use the validator of the window which
2979     // is receiving the event
2980     if ( event.GetEventObject() == this )
2981     {
2982         wxValidator * const validator = GetValidator();
2983         if ( validator && validator->ProcessEventHere(event) )
2984         {
2985             return true;
2986         }
2987     }
2988 #endif // wxUSE_VALIDATORS
2989
2990     return wxEvtHandler::TryBefore(event);
2991 }
2992
2993 bool wxWindowBase::TryAfter(wxEvent& event)
2994 {
2995     // carry on up the parent-child hierarchy if the propagation count hasn't
2996     // reached zero yet
2997     if ( event.ShouldPropagate() )
2998     {
2999         // honour the requests to stop propagation at this window: this is
3000         // used by the dialogs, for example, to prevent processing the events
3001         // from the dialog controls in the parent frame which rarely, if ever,
3002         // makes sense
3003         if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
3004         {
3005             wxWindow *parent = GetParent();
3006             if ( parent && !parent->IsBeingDeleted() )
3007             {
3008                 wxPropagateOnce propagateOnce(event);
3009
3010                 return parent->GetEventHandler()->ProcessEvent(event);
3011             }
3012         }
3013     }
3014
3015     return wxEvtHandler::TryAfter(event);
3016 }
3017
3018 // ----------------------------------------------------------------------------
3019 // window relationships
3020 // ----------------------------------------------------------------------------
3021
3022 wxWindow *wxWindowBase::DoGetSibling(WindowOrder order) const
3023 {
3024     wxCHECK_MSG( GetParent(), NULL,
3025                     wxT("GetPrev/NextSibling() don't work for TLWs!") );
3026
3027     wxWindowList& siblings = GetParent()->GetChildren();
3028     wxWindowList::compatibility_iterator i = siblings.Find((wxWindow *)this);
3029     wxCHECK_MSG( i, NULL, wxT("window not a child of its parent?") );
3030
3031     if ( order == OrderBefore )
3032         i = i->GetPrevious();
3033     else // OrderAfter
3034         i = i->GetNext();
3035
3036     return i ? i->GetData() : NULL;
3037 }
3038
3039 // ----------------------------------------------------------------------------
3040 // keyboard navigation
3041 // ----------------------------------------------------------------------------
3042
3043 // Navigates in the specified direction inside this window
3044 bool wxWindowBase::DoNavigateIn(int flags)
3045 {
3046 #ifdef wxHAS_NATIVE_TAB_TRAVERSAL
3047     // native code doesn't process our wxNavigationKeyEvents anyhow
3048     wxUnusedVar(flags);
3049     return false;
3050 #else // !wxHAS_NATIVE_TAB_TRAVERSAL
3051     wxNavigationKeyEvent eventNav;
3052     wxWindow *focused = FindFocus();
3053     eventNav.SetCurrentFocus(focused);
3054     eventNav.SetEventObject(focused);
3055     eventNav.SetFlags(flags);
3056     return GetEventHandler()->ProcessEvent(eventNav);
3057 #endif // wxHAS_NATIVE_TAB_TRAVERSAL/!wxHAS_NATIVE_TAB_TRAVERSAL
3058 }
3059
3060 bool wxWindowBase::HandleAsNavigationKey(const wxKeyEvent& event)
3061 {
3062     if ( event.GetKeyCode() != WXK_TAB )
3063         return false;
3064
3065     int flags = wxNavigationKeyEvent::FromTab;
3066
3067     if ( event.ShiftDown() )
3068         flags |= wxNavigationKeyEvent::IsBackward;
3069     else
3070         flags |= wxNavigationKeyEvent::IsForward;
3071
3072     if ( event.ControlDown() )
3073         flags |= wxNavigationKeyEvent::WinChange;
3074
3075     Navigate(flags);
3076     return true;
3077 }
3078
3079 void wxWindowBase::DoMoveInTabOrder(wxWindow *win, WindowOrder move)
3080 {
3081     // check that we're not a top level window
3082     wxCHECK_RET( GetParent(),
3083                     wxT("MoveBefore/AfterInTabOrder() don't work for TLWs!") );
3084
3085     // detect the special case when we have nothing to do anyhow and when the
3086     // code below wouldn't work
3087     if ( win == this )
3088         return;
3089
3090     // find the target window in the siblings list
3091     wxWindowList& siblings = GetParent()->GetChildren();
3092     wxWindowList::compatibility_iterator i = siblings.Find(win);
3093     wxCHECK_RET( i, wxT("MoveBefore/AfterInTabOrder(): win is not a sibling") );
3094
3095     // unfortunately, when wxUSE_STL == 1 DetachNode() is not implemented so we
3096     // can't just move the node around
3097     wxWindow *self = (wxWindow *)this;
3098     siblings.DeleteObject(self);
3099     if ( move == OrderAfter )
3100     {
3101         i = i->GetNext();
3102     }
3103
3104     if ( i )
3105     {
3106         siblings.Insert(i, self);
3107     }
3108     else // OrderAfter and win was the last sibling
3109     {
3110         siblings.Append(self);
3111     }
3112 }
3113
3114 // ----------------------------------------------------------------------------
3115 // focus handling
3116 // ----------------------------------------------------------------------------
3117
3118 /*static*/ wxWindow* wxWindowBase::FindFocus()
3119 {
3120     wxWindowBase *win = DoFindFocus();
3121     return win ? win->GetMainWindowOfCompositeControl() : NULL;
3122 }
3123
3124 bool wxWindowBase::HasFocus() const
3125 {
3126     wxWindowBase *win = DoFindFocus();
3127     return win == this ||
3128            win == wxConstCast(this, wxWindowBase)->GetMainWindowOfCompositeControl();
3129 }
3130
3131 // ----------------------------------------------------------------------------
3132 // drag and drop
3133 // ----------------------------------------------------------------------------
3134
3135 #if wxUSE_DRAG_AND_DROP && !defined(__WXMSW__)
3136
3137 namespace
3138 {
3139
3140 class DragAcceptFilesTarget : public wxFileDropTarget
3141 {
3142 public:
3143     DragAcceptFilesTarget(wxWindowBase *win) : m_win(win) {}
3144
3145     virtual bool OnDropFiles(wxCoord x, wxCoord y,
3146                              const wxArrayString& filenames)
3147     {
3148         wxDropFilesEvent event(wxEVT_DROP_FILES,
3149                                filenames.size(),
3150                                wxCArrayString(filenames).Release());
3151         event.SetEventObject(m_win);
3152         event.m_pos.x = x;
3153         event.m_pos.y = y;
3154
3155         return m_win->HandleWindowEvent(event);
3156     }
3157
3158 private:
3159     wxWindowBase * const m_win;
3160
3161     wxDECLARE_NO_COPY_CLASS(DragAcceptFilesTarget);
3162 };
3163
3164
3165 } // anonymous namespace
3166
3167 // Generic version of DragAcceptFiles(). It works by installing a simple
3168 // wxFileDropTarget-to-EVT_DROP_FILES adaptor and therefore cannot be used
3169 // together with explicit SetDropTarget() calls.
3170 void wxWindowBase::DragAcceptFiles(bool accept)
3171 {
3172     if ( accept )
3173     {
3174         wxASSERT_MSG( !GetDropTarget(),
3175                       "cannot use DragAcceptFiles() and SetDropTarget() together" );
3176         SetDropTarget(new DragAcceptFilesTarget(this));
3177     }
3178     else
3179     {
3180         SetDropTarget(NULL);
3181     }
3182 }
3183
3184 #endif // wxUSE_DRAG_AND_DROP && !defined(__WXMSW__)
3185
3186 // ----------------------------------------------------------------------------
3187 // global functions
3188 // ----------------------------------------------------------------------------
3189
3190 wxWindow* wxGetTopLevelParent(wxWindow *win)
3191 {
3192     while ( win && !win->IsTopLevel() )
3193          win = win->GetParent();
3194
3195     return win;
3196 }
3197
3198 #if wxUSE_ACCESSIBILITY
3199 // ----------------------------------------------------------------------------
3200 // accessible object for windows
3201 // ----------------------------------------------------------------------------
3202
3203 // Can return either a child object, or an integer
3204 // representing the child element, starting from 1.
3205 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
3206 {
3207     wxASSERT( GetWindow() != NULL );
3208     if (!GetWindow())
3209         return wxACC_FAIL;
3210
3211     return wxACC_NOT_IMPLEMENTED;
3212 }
3213
3214 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
3215 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
3216 {
3217     wxASSERT( GetWindow() != NULL );
3218     if (!GetWindow())
3219         return wxACC_FAIL;
3220
3221     wxWindow* win = NULL;
3222     if (elementId == 0)
3223     {
3224         win = GetWindow();
3225     }
3226     else
3227     {
3228         if (elementId <= (int) GetWindow()->GetChildren().GetCount())
3229         {
3230             win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
3231         }
3232         else
3233             return wxACC_FAIL;
3234     }
3235     if (win)
3236     {
3237         rect = win->GetRect();
3238         if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
3239             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
3240         return wxACC_OK;
3241     }
3242
3243     return wxACC_NOT_IMPLEMENTED;
3244 }
3245
3246 // Navigates from fromId to toId/toObject.
3247 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
3248                              int* WXUNUSED(toId), wxAccessible** toObject)
3249 {
3250     wxASSERT( GetWindow() != NULL );
3251     if (!GetWindow())
3252         return wxACC_FAIL;
3253
3254     switch (navDir)
3255     {
3256     case wxNAVDIR_FIRSTCHILD:
3257         {
3258             if (GetWindow()->GetChildren().GetCount() == 0)
3259                 return wxACC_FALSE;
3260             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
3261             *toObject = childWindow->GetOrCreateAccessible();
3262
3263             return wxACC_OK;
3264         }
3265     case wxNAVDIR_LASTCHILD:
3266         {
3267             if (GetWindow()->GetChildren().GetCount() == 0)
3268                 return wxACC_FALSE;
3269             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
3270             *toObject = childWindow->GetOrCreateAccessible();
3271
3272             return wxACC_OK;
3273         }
3274     case wxNAVDIR_RIGHT:
3275     case wxNAVDIR_DOWN:
3276     case wxNAVDIR_NEXT:
3277         {
3278             wxWindowList::compatibility_iterator node =
3279                 wxWindowList::compatibility_iterator();
3280             if (fromId == 0)
3281             {
3282                 // Can't navigate to sibling of this window
3283                 // if we're a top-level window.
3284                 if (!GetWindow()->GetParent())
3285                     return wxACC_NOT_IMPLEMENTED;
3286
3287                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
3288             }
3289             else
3290             {
3291                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
3292                     node = GetWindow()->GetChildren().Item(fromId-1);
3293             }
3294
3295             if (node && node->GetNext())
3296             {
3297                 wxWindow* nextWindow = node->GetNext()->GetData();
3298                 *toObject = nextWindow->GetOrCreateAccessible();
3299                 return wxACC_OK;
3300             }
3301             else
3302                 return wxACC_FALSE;
3303         }
3304     case wxNAVDIR_LEFT:
3305     case wxNAVDIR_UP:
3306     case wxNAVDIR_PREVIOUS:
3307         {
3308             wxWindowList::compatibility_iterator node =
3309                 wxWindowList::compatibility_iterator();
3310             if (fromId == 0)
3311             {
3312                 // Can't navigate to sibling of this window
3313                 // if we're a top-level window.
3314                 if (!GetWindow()->GetParent())
3315                     return wxACC_NOT_IMPLEMENTED;
3316
3317                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
3318             }
3319             else
3320             {
3321                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
3322                     node = GetWindow()->GetChildren().Item(fromId-1);
3323             }
3324
3325             if (node && node->GetPrevious())
3326             {
3327                 wxWindow* previousWindow = node->GetPrevious()->GetData();
3328                 *toObject = previousWindow->GetOrCreateAccessible();
3329                 return wxACC_OK;
3330             }
3331             else
3332                 return wxACC_FALSE;
3333         }
3334     }
3335
3336     return wxACC_NOT_IMPLEMENTED;
3337 }
3338
3339 // Gets the name of the specified object.
3340 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
3341 {
3342     wxASSERT( GetWindow() != NULL );
3343     if (!GetWindow())
3344         return wxACC_FAIL;
3345
3346     wxString title;
3347
3348     // If a child, leave wxWidgets to call the function on the actual
3349     // child object.
3350     if (childId > 0)
3351         return wxACC_NOT_IMPLEMENTED;
3352
3353     // This will eventually be replaced by specialised
3354     // accessible classes, one for each kind of wxWidgets
3355     // control or window.
3356 #if wxUSE_BUTTON
3357     if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
3358         title = ((wxButton*) GetWindow())->GetLabel();
3359     else
3360 #endif
3361         title = GetWindow()->GetName();
3362
3363     if (!title.empty())
3364     {
3365         *name = title;
3366         return wxACC_OK;
3367     }
3368     else
3369         return wxACC_NOT_IMPLEMENTED;
3370 }
3371
3372 // Gets the number of children.
3373 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
3374 {
3375     wxASSERT( GetWindow() != NULL );
3376     if (!GetWindow())
3377         return wxACC_FAIL;
3378
3379     *childId = (int) GetWindow()->GetChildren().GetCount();
3380     return wxACC_OK;
3381 }
3382
3383 // Gets the specified child (starting from 1).
3384 // If *child is NULL and return value is wxACC_OK,
3385 // this means that the child is a simple element and
3386 // not an accessible object.
3387 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
3388 {
3389     wxASSERT( GetWindow() != NULL );
3390     if (!GetWindow())
3391         return wxACC_FAIL;
3392
3393     if (childId == 0)
3394     {
3395         *child = this;
3396         return wxACC_OK;
3397     }
3398
3399     if (childId > (int) GetWindow()->GetChildren().GetCount())
3400         return wxACC_FAIL;
3401
3402     wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
3403     *child = childWindow->GetOrCreateAccessible();
3404     if (*child)
3405         return wxACC_OK;
3406     else
3407         return wxACC_FAIL;
3408 }
3409
3410 // Gets the parent, or NULL.
3411 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
3412 {
3413     wxASSERT( GetWindow() != NULL );
3414     if (!GetWindow())
3415         return wxACC_FAIL;
3416
3417     wxWindow* parentWindow = GetWindow()->GetParent();
3418     if (!parentWindow)
3419     {
3420         *parent = NULL;
3421         return wxACC_OK;
3422     }
3423     else
3424     {
3425         *parent = parentWindow->GetOrCreateAccessible();
3426         if (*parent)
3427             return wxACC_OK;
3428         else
3429             return wxACC_FAIL;
3430     }
3431 }
3432
3433 // Performs the default action. childId is 0 (the action for this object)
3434 // or > 0 (the action for a child).
3435 // Return wxACC_NOT_SUPPORTED if there is no default action for this
3436 // window (e.g. an edit control).
3437 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
3438 {
3439     wxASSERT( GetWindow() != NULL );
3440     if (!GetWindow())
3441         return wxACC_FAIL;
3442
3443     return wxACC_NOT_IMPLEMENTED;
3444 }
3445
3446 // Gets the default action for this object (0) or > 0 (the action for a child).
3447 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
3448 // string if there is no action.
3449 // The retrieved string describes the action that is performed on an object,
3450 // not what the object does as a result. For example, a toolbar button that prints
3451 // a document has a default action of "Press" rather than "Prints the current document."
3452 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
3453 {
3454     wxASSERT( GetWindow() != NULL );
3455     if (!GetWindow())
3456         return wxACC_FAIL;
3457
3458     return wxACC_NOT_IMPLEMENTED;
3459 }
3460
3461 // Returns the description for this object or a child.
3462 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
3463 {
3464     wxASSERT( GetWindow() != NULL );
3465     if (!GetWindow())
3466         return wxACC_FAIL;
3467
3468     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3469     if (!ht.empty())
3470     {
3471         *description = ht;
3472         return wxACC_OK;
3473     }
3474     return wxACC_NOT_IMPLEMENTED;
3475 }
3476
3477 // Returns help text for this object or a child, similar to tooltip text.
3478 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
3479 {
3480     wxASSERT( GetWindow() != NULL );
3481     if (!GetWindow())
3482         return wxACC_FAIL;
3483
3484     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3485     if (!ht.empty())
3486     {
3487         *helpText = ht;
3488         return wxACC_OK;
3489     }
3490     return wxACC_NOT_IMPLEMENTED;
3491 }
3492
3493 // Returns the keyboard shortcut for this object or child.
3494 // Return e.g. ALT+K
3495 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
3496 {
3497     wxASSERT( GetWindow() != NULL );
3498     if (!GetWindow())
3499         return wxACC_FAIL;
3500
3501     return wxACC_NOT_IMPLEMENTED;
3502 }
3503
3504 // Returns a role constant.
3505 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
3506 {
3507     wxASSERT( GetWindow() != NULL );
3508     if (!GetWindow())
3509         return wxACC_FAIL;
3510
3511     // If a child, leave wxWidgets to call the function on the actual
3512     // child object.
3513     if (childId > 0)
3514         return wxACC_NOT_IMPLEMENTED;
3515
3516     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3517         return wxACC_NOT_IMPLEMENTED;
3518 #if wxUSE_STATUSBAR
3519     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3520         return wxACC_NOT_IMPLEMENTED;
3521 #endif
3522 #if wxUSE_TOOLBAR
3523     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3524         return wxACC_NOT_IMPLEMENTED;
3525 #endif
3526
3527     //*role = wxROLE_SYSTEM_CLIENT;
3528     *role = wxROLE_SYSTEM_CLIENT;
3529     return wxACC_OK;
3530
3531     #if 0
3532     return wxACC_NOT_IMPLEMENTED;
3533     #endif
3534 }
3535
3536 // Returns a state constant.
3537 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
3538 {
3539     wxASSERT( GetWindow() != NULL );
3540     if (!GetWindow())
3541         return wxACC_FAIL;
3542
3543     // If a child, leave wxWidgets to call the function on the actual
3544     // child object.
3545     if (childId > 0)
3546         return wxACC_NOT_IMPLEMENTED;
3547
3548     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3549         return wxACC_NOT_IMPLEMENTED;
3550
3551 #if wxUSE_STATUSBAR
3552     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3553         return wxACC_NOT_IMPLEMENTED;
3554 #endif
3555 #if wxUSE_TOOLBAR
3556     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3557         return wxACC_NOT_IMPLEMENTED;
3558 #endif
3559
3560     *state = 0;
3561     return wxACC_OK;
3562
3563     #if 0
3564     return wxACC_NOT_IMPLEMENTED;
3565     #endif
3566 }
3567
3568 // Returns a localized string representing the value for the object
3569 // or child.
3570 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
3571 {
3572     wxASSERT( GetWindow() != NULL );
3573     if (!GetWindow())
3574         return wxACC_FAIL;
3575
3576     return wxACC_NOT_IMPLEMENTED;
3577 }
3578
3579 // Selects the object or child.
3580 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
3581 {
3582     wxASSERT( GetWindow() != NULL );
3583     if (!GetWindow())
3584         return wxACC_FAIL;
3585
3586     return wxACC_NOT_IMPLEMENTED;
3587 }
3588
3589 // Gets the window with the keyboard focus.
3590 // If childId is 0 and child is NULL, no object in
3591 // this subhierarchy has the focus.
3592 // If this object has the focus, child should be 'this'.
3593 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
3594 {
3595     wxASSERT( GetWindow() != NULL );
3596     if (!GetWindow())
3597         return wxACC_FAIL;
3598
3599     return wxACC_NOT_IMPLEMENTED;
3600 }
3601
3602 #if wxUSE_VARIANT
3603 // Gets a variant representing the selected children
3604 // of this object.
3605 // Acceptable values:
3606 // - a null variant (IsNull() returns true)
3607 // - a list variant (GetType() == wxT("list")
3608 // - an integer representing the selected child element,
3609 //   or 0 if this object is selected (GetType() == wxT("long")
3610 // - a "void*" pointer to a wxAccessible child object
3611 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
3612 {
3613     wxASSERT( GetWindow() != NULL );
3614     if (!GetWindow())
3615         return wxACC_FAIL;
3616
3617     return wxACC_NOT_IMPLEMENTED;
3618 }
3619 #endif // wxUSE_VARIANT
3620
3621 #endif // wxUSE_ACCESSIBILITY
3622
3623 // ----------------------------------------------------------------------------
3624 // RTL support
3625 // ----------------------------------------------------------------------------
3626
3627 wxCoord
3628 wxWindowBase::AdjustForLayoutDirection(wxCoord x,
3629                                        wxCoord width,
3630                                        wxCoord widthTotal) const
3631 {
3632     if ( GetLayoutDirection() == wxLayout_RightToLeft )
3633     {
3634         x = widthTotal - x - width;
3635     }
3636
3637     return x;
3638 }
3639
3640