src/common/wincmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/window.cpp
   3 // Purpose:     common (to all ports) wxWindow functions
   4 // Author:      Julian Smart, Vadim Zeitlin
   5 // Modified by:
   6 // Created:     13/07/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWidgets team
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/string.h"
  29     #include "wx/log.h"
  30     #include "wx/intl.h"
  31     #include "wx/frame.h"
  32     #include "wx/window.h"
  33     #include "wx/control.h"
  34     #include "wx/checkbox.h"
  35     #include "wx/radiobut.h"
  36     #include "wx/statbox.h"
  37     #include "wx/textctrl.h"
  38     #include "wx/settings.h"
  39     #include "wx/dialog.h"
  40     #include "wx/msgdlg.h"
  41     #include "wx/msgout.h"
  42     #include "wx/statusbr.h"
  43     #include "wx/toolbar.h"
  44     #include "wx/dcclient.h"
  45     #include "wx/scrolbar.h"
  46     #include "wx/layout.h"
  47     #include "wx/sizer.h"
  48     #include "wx/menu.h"
  49 #endif //WX_PRECOMP
  50
  51 #if wxUSE_DRAG_AND_DROP
  52     #include "wx/dnd.h"
  53 #endif // wxUSE_DRAG_AND_DROP
  54
  55 #if wxUSE_ACCESSIBILITY
  56     #include "wx/access.h"
  57 #endif
  58
  59 #if wxUSE_HELP
  60     #include "wx/cshelp.h"
  61 #endif // wxUSE_HELP
  62
  63 #if wxUSE_TOOLTIPS
  64     #include "wx/tooltip.h"
  65 #endif // wxUSE_TOOLTIPS
  66
  67 #if wxUSE_CARET
  68     #include "wx/caret.h"
  69 #endif // wxUSE_CARET
  70
  71 #if wxUSE_SYSTEM_OPTIONS
  72     #include "wx/sysopt.h"
  73 #endif
  74
  75 #include "wx/platinfo.h"
  76 #include "wx/private/window.h"
  77
  78 #ifdef __WXMSW__
  79     #include "wx/msw/wrapwin.h"
  80 #endif
  81
  82 // Windows List
  83 WXDLLIMPEXP_DATA_CORE(wxWindowList) wxTopLevelWindows;
  84
  85 // globals
  86 #if wxUSE_MENUS
  87 wxMenu *wxCurrentPopupMenu = NULL;
  88 #endif // wxUSE_MENUS
  89
  90 // ----------------------------------------------------------------------------
  91 // static data
  92 // ----------------------------------------------------------------------------
  93
  94
  95 IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
  96
  97 // ----------------------------------------------------------------------------
  98 // event table
  99 // ----------------------------------------------------------------------------
 100
 101 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
 102     EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
 103     EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
 104     EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
 105
 106 #if wxUSE_HELP
 107     EVT_HELP(wxID_ANY, wxWindowBase::OnHelp)
 108 #endif // wxUSE_HELP
 109
 110     EVT_SIZE(wxWindowBase::InternalOnSize)
 111 END_EVENT_TABLE()
 112
 113 // ============================================================================
 114 // implementation of the common functionality of the wxWindow class
 115 // ============================================================================
 116
 117 // ----------------------------------------------------------------------------
 118 // initialization
 119 // ----------------------------------------------------------------------------
 120
 121 // the default initialization
 122 wxWindowBase::wxWindowBase()
 123 {
 124     // no window yet, no parent nor children
 125     m_parent = NULL;
 126     m_windowId = wxID_ANY;
 127
 128     // no constraints on the minimal window size
 129     m_minWidth =
 130     m_maxWidth = wxDefaultCoord;
 131     m_minHeight =
 132     m_maxHeight = wxDefaultCoord;
 133
 134     // invalidiated cache value
 135     m_bestSizeCache = wxDefaultSize;
 136
 137     // window are created enabled and visible by default
 138     m_isShown =
 139     m_isEnabled = true;
 140
 141     // the default event handler is just this window
 142     m_eventHandler = this;
 143
 144 #if wxUSE_VALIDATORS
 145     // no validator
 146     m_windowValidator = NULL;
 147 #endif // wxUSE_VALIDATORS
 148
 149     // the colours/fonts are default for now, so leave m_font,
 150     // m_backgroundColour and m_foregroundColour uninitialized and set those
 151     m_hasBgCol =
 152     m_hasFgCol =
 153     m_hasFont = false;
 154     m_inheritBgCol =
 155     m_inheritFgCol =
 156     m_inheritFont = false;
 157
 158     // no style bits
 159     m_exStyle =
 160     m_windowStyle = 0;
 161
 162     m_backgroundStyle = wxBG_STYLE_ERASE;
 163
 164 #if wxUSE_CONSTRAINTS
 165     // no constraints whatsoever
 166     m_constraints = NULL;
 167     m_constraintsInvolvedIn = NULL;
 168 #endif // wxUSE_CONSTRAINTS
 169
 170     m_windowSizer = NULL;
 171     m_containingSizer = NULL;
 172     m_autoLayout = false;
 173
 174 #if wxUSE_DRAG_AND_DROP
 175     m_dropTarget = NULL;
 176 #endif // wxUSE_DRAG_AND_DROP
 177
 178 #if wxUSE_TOOLTIPS
 179     m_tooltip = NULL;
 180 #endif // wxUSE_TOOLTIPS
 181
 182 #if wxUSE_CARET
 183     m_caret = NULL;
 184 #endif // wxUSE_CARET
 185
 186 #if wxUSE_PALETTE
 187     m_hasCustomPalette = false;
 188 #endif // wxUSE_PALETTE
 189
 190 #if wxUSE_ACCESSIBILITY
 191     m_accessible = NULL;
 192 #endif
 193
 194     m_virtualSize = wxDefaultSize;
 195
 196     m_scrollHelper = NULL;
 197
 198     m_windowVariant = wxWINDOW_VARIANT_NORMAL;
 199 #if wxUSE_SYSTEM_OPTIONS
 200     if ( wxSystemOptions::HasOption(wxWINDOW_DEFAULT_VARIANT) )
 201     {
 202        m_windowVariant = (wxWindowVariant) wxSystemOptions::GetOptionInt( wxWINDOW_DEFAULT_VARIANT ) ;
 203     }
 204 #endif
 205
 206     // Whether we're using the current theme for this window (wxGTK only for now)
 207     m_themeEnabled = false;
 208
 209     // This is set to true by SendDestroyEvent() which should be called by the
 210     // most derived class to ensure that the destruction event is sent as soon
 211     // as possible to allow its handlers to still see the undestroyed window
 212     m_isBeingDeleted = false;
 213
 214     m_freezeCount = 0;
 215 }
 216
 217 // common part of window creation process
 218 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 219                               wxWindowID id,
 220                               const wxPoint& WXUNUSED(pos),
 221                               const wxSize& size,
 222                               long style,
 223                               const wxString& name)
 224 {
 225     // ids are limited to 16 bits under MSW so if you care about portability,
 226     // it's not a good idea to use ids out of this range (and negative ids are
 227     // reserved for wxWidgets own usage)
 228     wxASSERT_MSG( id == wxID_ANY || (id >= 0 && id < 32767) ||
 229                   (id >= wxID_AUTO_LOWEST && id <= wxID_AUTO_HIGHEST),
 230                   wxT("invalid id value") );
 231
 232     // generate a new id if the user doesn't care about it
 233     if ( id == wxID_ANY )
 234     {
 235         m_windowId = NewControlId();
 236     }
 237     else // valid id specified
 238     {
 239         m_windowId = id;
 240     }
 241
 242     // don't use SetWindowStyleFlag() here, this function should only be called
 243     // to change the flag after creation as it tries to reflect the changes in
 244     // flags by updating the window dynamically and we don't need this here
 245     m_windowStyle = style;
 246
 247     // assume the user doesn't want this window to shrink beneath its initial
 248     // size, this worked like this in wxWidgets 2.8 and before and generally
 249     // often makes sense for child windows (for top level ones it definitely
 250     // does not as the user should be able to resize the window)
 251     //
 252     // note that we can't use IsTopLevel() from ctor
 253     if ( size != wxDefaultSize && !wxTopLevelWindows.Find((wxWindow *)this) )
 254         SetMinSize(size);
 255
 256     SetName(name);
 257     SetParent(parent);
 258
 259     return true;
 260 }
 261
 262 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 263                               wxWindowID id,
 264                               const wxPoint& pos,
 265                               const wxSize& size,
 266                               long style,
 267                               const wxValidator& wxVALIDATOR_PARAM(validator),
 268                               const wxString& name)
 269 {
 270     if ( !CreateBase(parent, id, pos, size, style, name) )
 271         return false;
 272
 273 #if wxUSE_VALIDATORS
 274     SetValidator(validator);
 275 #endif // wxUSE_VALIDATORS
 276
 277     // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
 278     // have it too - like this it's possible to set it only in the top level
 279     // dialog/frame and all children will inherit it by defult
 280     if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
 281     {
 282         SetExtraStyle(GetExtraStyle() | wxWS_EX_VALIDATE_RECURSIVELY);
 283     }
 284
 285     return true;
 286 }
 287
 288 bool wxWindowBase::ToggleWindowStyle(int flag)
 289 {
 290     wxASSERT_MSG( flag, wxT("flags with 0 value can't be toggled") );
 291
 292     bool rc;
 293     long style = GetWindowStyleFlag();
 294     if ( style & flag )
 295     {
 296         style &= ~flag;
 297         rc = false;
 298     }
 299     else // currently off
 300     {
 301         style |= flag;
 302         rc = true;
 303     }
 304
 305     SetWindowStyleFlag(style);
 306
 307     return rc;
 308 }
 309
 310 // ----------------------------------------------------------------------------
 311 // destruction
 312 // ----------------------------------------------------------------------------
 313
 314 // common clean up
 315 wxWindowBase::~wxWindowBase()
 316 {
 317     wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
 318
 319     // FIXME if these 2 cases result from programming errors in the user code
 320     //       we should probably assert here instead of silently fixing them
 321
 322     // Just in case the window has been Closed, but we're then deleting
 323     // immediately: don't leave dangling pointers.
 324     wxPendingDelete.DeleteObject(this);
 325
 326     // Just in case we've loaded a top-level window via LoadNativeDialog but
 327     // we weren't a dialog class
 328     wxTopLevelWindows.DeleteObject((wxWindow*)this);
 329
 330     // Any additional event handlers should be popped before the window is
 331     // deleted as otherwise the last handler will be left with a dangling
 332     // pointer to this window result in a difficult to diagnose crash later on.
 333     wxASSERT_MSG( GetEventHandler() == this,
 334                     wxT("any pushed event handlers must have been removed") );
 335
 336 #if wxUSE_MENUS
 337     // The associated popup menu can still be alive, disassociate from it in
 338     // this case
 339     if ( wxCurrentPopupMenu && wxCurrentPopupMenu->GetInvokingWindow() == this )
 340         wxCurrentPopupMenu->SetInvokingWindow(NULL);
 341 #endif // wxUSE_MENUS
 342
 343     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 344
 345     // notify the parent about this window destruction
 346     if ( m_parent )
 347         m_parent->RemoveChild(this);
 348
 349 #if wxUSE_CARET
 350     delete m_caret;
 351 #endif // wxUSE_CARET
 352
 353 #if wxUSE_VALIDATORS
 354     delete m_windowValidator;
 355 #endif // wxUSE_VALIDATORS
 356
 357 #if wxUSE_CONSTRAINTS
 358     // Have to delete constraints/sizer FIRST otherwise sizers may try to look
 359     // at deleted windows as they delete themselves.
 360     DeleteRelatedConstraints();
 361
 362     if ( m_constraints )
 363     {
 364         // This removes any dangling pointers to this window in other windows'
 365         // constraintsInvolvedIn lists.
 366         UnsetConstraints(m_constraints);
 367         wxDELETE(m_constraints);
 368     }
 369 #endif // wxUSE_CONSTRAINTS
 370
 371     if ( m_containingSizer )
 372         m_containingSizer->Detach( (wxWindow*)this );
 373
 374     delete m_windowSizer;
 375
 376 #if wxUSE_DRAG_AND_DROP
 377     delete m_dropTarget;
 378 #endif // wxUSE_DRAG_AND_DROP
 379
 380 #if wxUSE_TOOLTIPS
 381     delete m_tooltip;
 382 #endif // wxUSE_TOOLTIPS
 383
 384 #if wxUSE_ACCESSIBILITY
 385     delete m_accessible;
 386 #endif
 387
 388 #if wxUSE_HELP
 389     // NB: this has to be called unconditionally, because we don't know
 390     //     whether this window has associated help text or not
 391     wxHelpProvider *helpProvider = wxHelpProvider::Get();
 392     if ( helpProvider )
 393         helpProvider->RemoveHelp(this);
 394 #endif
 395 }
 396
 397 bool wxWindowBase::IsBeingDeleted() const
 398 {
 399     return m_isBeingDeleted ||
 400             (!IsTopLevel() && m_parent && m_parent->IsBeingDeleted());
 401 }
 402
 403 void wxWindowBase::SendDestroyEvent()
 404 {
 405     if ( m_isBeingDeleted )
 406     {
 407         // we could have been already called from a more derived class dtor,
 408         // e.g. ~wxTLW calls us and so does ~wxWindow and the latter call
 409         // should be simply ignored
 410         return;
 411     }
 412
 413     m_isBeingDeleted = true;
 414
 415     wxWindowDestroyEvent event;
 416     event.SetEventObject(this);
 417     event.SetId(GetId());
 418     GetEventHandler()->ProcessEvent(event);
 419 }
 420
 421 bool wxWindowBase::Destroy()
 422 {
 423     SendDestroyEvent();
 424
 425     delete this;
 426
 427     return true;
 428 }
 429
 430 bool wxWindowBase::Close(bool force)
 431 {
 432     wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
 433     event.SetEventObject(this);
 434     event.SetCanVeto(!force);
 435
 436     // return false if window wasn't closed because the application vetoed the
 437     // close event
 438     return HandleWindowEvent(event) && !event.GetVeto();
 439 }
 440
 441 bool wxWindowBase::DestroyChildren()
 442 {
 443     wxWindowList::compatibility_iterator node;
 444     for ( ;; )
 445     {
 446         // we iterate until the list becomes empty
 447         node = GetChildren().GetFirst();
 448         if ( !node )
 449             break;
 450
 451         wxWindow *child = node->GetData();
 452
 453         // note that we really want to delete it immediately so don't call the
 454         // possible overridden Destroy() version which might not delete the
 455         // child immediately resulting in problems with our (top level) child
 456         // outliving its parent
 457         child->wxWindowBase::Destroy();
 458
 459         wxASSERT_MSG( !GetChildren().Find(child),
 460                       wxT("child didn't remove itself using RemoveChild()") );
 461     }
 462
 463     return true;
 464 }
 465
 466 // ----------------------------------------------------------------------------
 467 // size/position related methods
 468 // ----------------------------------------------------------------------------
 469
 470 // centre the window with respect to its parent in either (or both) directions
 471 void wxWindowBase::DoCentre(int dir)
 472 {
 473     wxCHECK_RET( !(dir & wxCENTRE_ON_SCREEN) && GetParent(),
 474                  wxT("this method only implements centering child windows") );
 475
 476     SetSize(GetRect().CentreIn(GetParent()->GetClientSize(), dir));
 477 }
 478
 479 // fits the window around the children
 480 void wxWindowBase::Fit()
 481 {
 482     if ( !GetChildren().empty() )
 483     {
 484         SetSize(GetBestSize());
 485     }
 486     //else: do nothing if we have no children
 487 }
 488
 489 // fits virtual size (ie. scrolled area etc.) around children
 490 void wxWindowBase::FitInside()
 491 {
 492     if ( GetChildren().GetCount() > 0 )
 493     {
 494         SetVirtualSize( GetBestVirtualSize() );
 495     }
 496 }
 497
 498 // On Mac, scrollbars are explicitly children.
 499 #if defined( __WXMAC__ ) && !defined(__WXUNIVERSAL__)
 500 static bool wxHasRealChildren(const wxWindowBase* win)
 501 {
 502     int realChildCount = 0;
 503
 504     for ( wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
 505           node;
 506           node = node->GetNext() )
 507     {
 508         wxWindow *win = node->GetData();
 509         if ( !win->IsTopLevel() && win->IsShown()
 510 #if wxUSE_SCROLLBAR
 511             && !win->IsKindOf(CLASSINFO(wxScrollBar))
 512 #endif
 513             )
 514             realChildCount ++;
 515     }
 516     return (realChildCount > 0);
 517 }
 518 #endif
 519
 520 void wxWindowBase::InvalidateBestSize()
 521 {
 522     m_bestSizeCache = wxDefaultSize;
 523
 524     // parent's best size calculation may depend on its children's
 525     // as long as child window we are in is not top level window itself
 526     // (because the TLW size is never resized automatically)
 527     // so let's invalidate it as well to be safe:
 528     if (m_parent && !IsTopLevel())
 529         m_parent->InvalidateBestSize();
 530 }
 531
 532 // return the size best suited for the current window
 533 wxSize wxWindowBase::DoGetBestSize() const
 534 {
 535     wxSize best;
 536
 537     if ( m_windowSizer )
 538     {
 539         best = m_windowSizer->GetMinSize();
 540     }
 541 #if wxUSE_CONSTRAINTS
 542     else if ( m_constraints )
 543     {
 544         wxConstCast(this, wxWindowBase)->SatisfyConstraints();
 545
 546         // our minimal acceptable size is such that all our windows fit inside
 547         int maxX = 0,
 548             maxY = 0;
 549
 550         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 551               node;
 552               node = node->GetNext() )
 553         {
 554             wxLayoutConstraints *c = node->GetData()->GetConstraints();
 555             if ( !c )
 556             {
 557                 // it's not normal that we have an unconstrained child, but
 558                 // what can we do about it?
 559                 continue;
 560             }
 561
 562             int x = c->right.GetValue(),
 563                 y = c->bottom.GetValue();
 564
 565             if ( x > maxX )
 566                 maxX = x;
 567
 568             if ( y > maxY )
 569                 maxY = y;
 570
 571             // TODO: we must calculate the overlaps somehow, otherwise we
 572             //       will never return a size bigger than the current one :-(
 573         }
 574
 575         best = wxSize(maxX, maxY);
 576     }
 577 #endif // wxUSE_CONSTRAINTS
 578     else if ( !GetChildren().empty()
 579 #if defined( __WXMAC__ ) && !defined(__WXUNIVERSAL__)
 580               && wxHasRealChildren(this)
 581 #endif
 582               )
 583     {
 584         // our minimal acceptable size is such that all our visible child
 585         // windows fit inside
 586         int maxX = 0,
 587             maxY = 0;
 588
 589         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 590               node;
 591               node = node->GetNext() )
 592         {
 593             wxWindow *win = node->GetData();
 594             if ( win->IsTopLevel()
 595                     || !win->IsShown()
 596 #if wxUSE_STATUSBAR
 597                         || wxDynamicCast(win, wxStatusBar)
 598 #endif // wxUSE_STATUSBAR
 599                )
 600             {
 601                 // dialogs and frames lie in different top level windows -
 602                 // don't deal with them here; as for the status bars, they
 603                 // don't lie in the client area at all
 604                 continue;
 605             }
 606
 607             int wx, wy, ww, wh;
 608             win->GetPosition(&wx, &wy);
 609
 610             // if the window hadn't been positioned yet, assume that it is in
 611             // the origin
 612             if ( wx == wxDefaultCoord )
 613                 wx = 0;
 614             if ( wy == wxDefaultCoord )
 615                 wy = 0;
 616
 617             win->GetSize(&ww, &wh);
 618             if ( wx + ww > maxX )
 619                 maxX = wx + ww;
 620             if ( wy + wh > maxY )
 621                 maxY = wy + wh;
 622         }
 623
 624         best = wxSize(maxX, maxY);
 625     }
 626     else // ! has children
 627     {
 628         wxSize size = GetMinSize();
 629         if ( !size.IsFullySpecified() )
 630         {
 631             // if the window doesn't define its best size we assume that it can
 632             // be arbitrarily small -- usually this is not the case, of course,
 633             // but we have no way to know what the limit is, it should really
 634             // override DoGetBestClientSize() itself to tell us
 635             size.SetDefaults(wxSize(1, 1));
 636         }
 637
 638         // return as-is, unadjusted by the client size difference.
 639         return size;
 640     }
 641
 642     // Add any difference between size and client size
 643     wxSize diff = GetSize() - GetClientSize();
 644     best.x += wxMax(0, diff.x);
 645     best.y += wxMax(0, diff.y);
 646
 647     return best;
 648 }
 649
 650 // helper of GetWindowBorderSize(): as many ports don't implement support for
 651 // wxSYS_BORDER/EDGE_X/Y metrics in their wxSystemSettings, use hard coded
 652 // fallbacks in this case
 653 static int wxGetMetricOrDefault(wxSystemMetric what, const wxWindowBase* win)
 654 {
 655     int rc = wxSystemSettings::GetMetric(
 656         what, static_cast<wxWindow*>(const_cast<wxWindowBase*>(win)));
 657     if ( rc == -1 )
 658     {
 659         switch ( what )
 660         {
 661             case wxSYS_BORDER_X:
 662             case wxSYS_BORDER_Y:
 663                 // 2D border is by default 1 pixel wide
 664                 rc = 1;
 665                 break;
 666
 667             case wxSYS_EDGE_X:
 668             case wxSYS_EDGE_Y:
 669                 // 3D borders are by default 2 pixels
 670                 rc = 2;
 671                 break;
 672
 673             default:
 674                 wxFAIL_MSG( wxT("unexpected wxGetMetricOrDefault() argument") );
 675                 rc = 0;
 676         }
 677     }
 678
 679     return rc;
 680 }
 681
 682 wxSize wxWindowBase::GetWindowBorderSize() const
 683 {
 684     wxSize size;
 685
 686     switch ( GetBorder() )
 687     {
 688         case wxBORDER_NONE:
 689             // nothing to do, size is already (0, 0)
 690             break;
 691
 692         case wxBORDER_SIMPLE:
 693         case wxBORDER_STATIC:
 694             size.x = wxGetMetricOrDefault(wxSYS_BORDER_X, this);
 695             size.y = wxGetMetricOrDefault(wxSYS_BORDER_Y, this);
 696             break;
 697
 698         case wxBORDER_SUNKEN:
 699         case wxBORDER_RAISED:
 700             size.x = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_X, this),
 701                            wxGetMetricOrDefault(wxSYS_BORDER_X, this));
 702             size.y = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_Y, this),
 703                            wxGetMetricOrDefault(wxSYS_BORDER_Y, this));
 704             break;
 705
 706         case wxBORDER_DOUBLE:
 707             size.x = wxGetMetricOrDefault(wxSYS_EDGE_X, this) +
 708                         wxGetMetricOrDefault(wxSYS_BORDER_X, this);
 709             size.y = wxGetMetricOrDefault(wxSYS_EDGE_Y, this) +
 710                         wxGetMetricOrDefault(wxSYS_BORDER_Y, this);
 711             break;
 712
 713         default:
 714             wxFAIL_MSG(wxT("Unknown border style."));
 715             break;
 716     }
 717
 718     // we have borders on both sides
 719     return size*2;
 720 }
 721
 722 wxSize wxWindowBase::GetEffectiveMinSize() const
 723 {
 724     // merge the best size with the min size, giving priority to the min size
 725     wxSize min = GetMinSize();
 726
 727     if (min.x == wxDefaultCoord || min.y == wxDefaultCoord)
 728     {
 729         wxSize best = GetBestSize();
 730         if (min.x == wxDefaultCoord) min.x =  best.x;
 731         if (min.y == wxDefaultCoord) min.y =  best.y;
 732     }
 733
 734     return min;
 735 }
 736
 737 wxSize wxWindowBase::DoGetBorderSize() const
 738 {
 739     // there is one case in which we can implement it for all ports easily
 740     if ( GetBorder() == wxBORDER_NONE )
 741         return wxSize(0, 0);
 742
 743     // otherwise use the difference between the real size and the client size
 744     // as a fallback: notice that this is incorrect in general as client size
 745     // also doesn't take the scrollbars into account
 746     return GetSize() - GetClientSize();
 747 }
 748
 749 wxSize wxWindowBase::GetBestSize() const
 750 {
 751     if ( !m_windowSizer && m_bestSizeCache.IsFullySpecified() )
 752         return m_bestSizeCache;
 753
 754     // call DoGetBestClientSize() first, if a derived class overrides it wants
 755     // it to be used
 756     wxSize size = DoGetBestClientSize();
 757     if ( size != wxDefaultSize )
 758     {
 759         size += DoGetBorderSize();
 760
 761         CacheBestSize(size);
 762         return size;
 763     }
 764
 765     return DoGetBestSize();
 766 }
 767
 768 void wxWindowBase::SetMinSize(const wxSize& minSize)
 769 {
 770     m_minWidth = minSize.x;
 771     m_minHeight = minSize.y;
 772 }
 773
 774 void wxWindowBase::SetMaxSize(const wxSize& maxSize)
 775 {
 776     m_maxWidth = maxSize.x;
 777     m_maxHeight = maxSize.y;
 778 }
 779
 780 void wxWindowBase::SetInitialSize(const wxSize& size)
 781 {
 782     // Set the min size to the size passed in.  This will usually either be
 783     // wxDefaultSize or the size passed to this window's ctor/Create function.
 784     SetMinSize(size);
 785
 786     // Merge the size with the best size if needed
 787     wxSize best = GetEffectiveMinSize();
 788
 789     // If the current size doesn't match then change it
 790     if (GetSize() != best)
 791         SetSize(best);
 792 }
 793
 794
 795 // by default the origin is not shifted
 796 wxPoint wxWindowBase::GetClientAreaOrigin() const
 797 {
 798     return wxPoint(0,0);
 799 }
 800
 801 wxSize wxWindowBase::ClientToWindowSize(const wxSize& size) const
 802 {
 803     const wxSize diff(GetSize() - GetClientSize());
 804
 805     return wxSize(size.x == -1 ? -1 : size.x + diff.x,
 806                   size.y == -1 ? -1 : size.y + diff.y);
 807 }
 808
 809 wxSize wxWindowBase::WindowToClientSize(const wxSize& size) const
 810 {
 811     const wxSize diff(GetSize() - GetClientSize());
 812
 813     return wxSize(size.x == -1 ? -1 : size.x - diff.x,
 814                   size.y == -1 ? -1 : size.y - diff.y);
 815 }
 816
 817 void wxWindowBase::SetWindowVariant( wxWindowVariant variant )
 818 {
 819     if ( m_windowVariant != variant )
 820     {
 821         m_windowVariant = variant;
 822
 823         DoSetWindowVariant(variant);
 824     }
 825 }
 826
 827 void wxWindowBase::DoSetWindowVariant( wxWindowVariant variant )
 828 {
 829     // adjust the font height to correspond to our new variant (notice that
 830     // we're only called if something really changed)
 831     wxFont font = GetFont();
 832     int size = font.GetPointSize();
 833     switch ( variant )
 834     {
 835         case wxWINDOW_VARIANT_NORMAL:
 836             break;
 837
 838         case wxWINDOW_VARIANT_SMALL:
 839             size = wxRound(size * 3.0 / 4.0);
 840             break;
 841
 842         case wxWINDOW_VARIANT_MINI:
 843             size = wxRound(size * 2.0 / 3.0);
 844             break;
 845
 846         case wxWINDOW_VARIANT_LARGE:
 847             size = wxRound(size * 5.0 / 4.0);
 848             break;
 849
 850         default:
 851             wxFAIL_MSG(wxT("unexpected window variant"));
 852             break;
 853     }
 854
 855     font.SetPointSize(size);
 856     SetFont(font);
 857 }
 858
 859 void wxWindowBase::DoSetSizeHints( int minW, int minH,
 860                                    int maxW, int maxH,
 861                                    int WXUNUSED(incW), int WXUNUSED(incH) )
 862 {
 863     wxCHECK_RET( (minW == wxDefaultCoord || maxW == wxDefaultCoord || minW <= maxW) &&
 864                     (minH == wxDefaultCoord || maxH == wxDefaultCoord || minH <= maxH),
 865                  wxT("min width/height must be less than max width/height!") );
 866
 867     m_minWidth = minW;
 868     m_maxWidth = maxW;
 869     m_minHeight = minH;
 870     m_maxHeight = maxH;
 871 }
 872
 873
 874 #if WXWIN_COMPATIBILITY_2_8
 875 void wxWindowBase::SetVirtualSizeHints(int WXUNUSED(minW), int WXUNUSED(minH),
 876                                        int WXUNUSED(maxW), int WXUNUSED(maxH))
 877 {
 878 }
 879
 880 void wxWindowBase::SetVirtualSizeHints(const wxSize& WXUNUSED(minsize),
 881                                        const wxSize& WXUNUSED(maxsize))
 882 {
 883 }
 884 #endif // WXWIN_COMPATIBILITY_2_8
 885
 886 void wxWindowBase::DoSetVirtualSize( int x, int y )
 887 {
 888     m_virtualSize = wxSize(x, y);
 889 }
 890
 891 wxSize wxWindowBase::DoGetVirtualSize() const
 892 {
 893     // we should use the entire client area so if it is greater than our
 894     // virtual size, expand it to fit (otherwise if the window is big enough we
 895     // wouldn't be using parts of it)
 896     wxSize size = GetClientSize();
 897     if ( m_virtualSize.x > size.x )
 898         size.x = m_virtualSize.x;
 899
 900     if ( m_virtualSize.y >= size.y )
 901         size.y = m_virtualSize.y;
 902
 903     return size;
 904 }
 905
 906 void wxWindowBase::DoGetScreenPosition(int *x, int *y) const
 907 {
 908     // screen position is the same as (0, 0) in client coords for non TLWs (and
 909     // TLWs override this method)
 910     if ( x )
 911         *x = 0;
 912     if ( y )
 913         *y = 0;
 914
 915     ClientToScreen(x, y);
 916 }
 917
 918 void wxWindowBase::SendSizeEvent(int flags)
 919 {
 920     wxSizeEvent event(GetSize(), GetId());
 921     event.SetEventObject(this);
 922     if ( flags & wxSEND_EVENT_POST )
 923         wxPostEvent(this, event);
 924     else
 925         HandleWindowEvent(event);
 926 }
 927
 928 void wxWindowBase::SendSizeEventToParent(int flags)
 929 {
 930     wxWindow * const parent = GetParent();
 931     if ( parent && !parent->IsBeingDeleted() )
 932         parent->SendSizeEvent(flags);
 933 }
 934
 935 bool wxWindowBase::HasScrollbar(int orient) const
 936 {
 937     // if scrolling in the given direction is disabled, we can't have the
 938     // corresponding scrollbar no matter what
 939     if ( !CanScroll(orient) )
 940         return false;
 941
 942     const wxSize sizeVirt = GetVirtualSize();
 943     const wxSize sizeClient = GetClientSize();
 944
 945     return orient == wxHORIZONTAL ? sizeVirt.x > sizeClient.x
 946                                   : sizeVirt.y > sizeClient.y;
 947 }
 948
 949 // ----------------------------------------------------------------------------
 950 // show/hide/enable/disable the window
 951 // ----------------------------------------------------------------------------
 952
 953 bool wxWindowBase::Show(bool show)
 954 {
 955     if ( show != m_isShown )
 956     {
 957         m_isShown = show;
 958
 959         return true;
 960     }
 961     else
 962     {
 963         return false;
 964     }
 965 }
 966
 967 bool wxWindowBase::IsEnabled() const
 968 {
 969     return IsThisEnabled() && (IsTopLevel() || !GetParent() || GetParent()->IsEnabled());
 970 }
 971
 972 void wxWindowBase::NotifyWindowOnEnableChange(bool enabled)
 973 {
 974 #ifndef wxHAS_NATIVE_ENABLED_MANAGEMENT
 975     DoEnable(enabled);
 976 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 977
 978     OnEnabled(enabled);
 979
 980     // If we are top-level then the logic doesn't apply - otherwise
 981     // showing a modal dialog would result in total greying out (and ungreying
 982     // out later) of everything which would be really ugly
 983     if ( IsTopLevel() )
 984         return;
 985
 986     for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 987           node;
 988           node = node->GetNext() )
 989     {
 990         wxWindowBase * const child = node->GetData();
 991         if ( !child->IsTopLevel() && child->IsThisEnabled() )
 992             child->NotifyWindowOnEnableChange(enabled);
 993     }
 994 }
 995
 996 bool wxWindowBase::Enable(bool enable)
 997 {
 998     if ( enable == IsThisEnabled() )
 999         return false;
1000
1001     m_isEnabled = enable;
1002
1003 #ifdef wxHAS_NATIVE_ENABLED_MANAGEMENT
1004     DoEnable(enable);
1005 #else // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
1006     wxWindowBase * const parent = GetParent();
1007     if( !IsTopLevel() && parent && !parent->IsEnabled() )
1008     {
1009         return true;
1010     }
1011 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
1012
1013     NotifyWindowOnEnableChange(enable);
1014
1015     return true;
1016 }
1017
1018 bool wxWindowBase::IsShownOnScreen() const
1019 {
1020     // A window is shown on screen if it itself is shown and so are all its
1021     // parents. But if a window is toplevel one, then its always visible on
1022     // screen if IsShown() returns true, even if it has a hidden parent.
1023     return IsShown() &&
1024            (IsTopLevel() || GetParent() == NULL || GetParent()->IsShownOnScreen());
1025 }
1026
1027 // ----------------------------------------------------------------------------
1028 // RTTI
1029 // ----------------------------------------------------------------------------
1030
1031 bool wxWindowBase::IsTopLevel() const
1032 {
1033     return false;
1034 }
1035
1036 // ----------------------------------------------------------------------------
1037 // Freeze/Thaw
1038 // ----------------------------------------------------------------------------
1039
1040 void wxWindowBase::Freeze()
1041 {
1042     if ( !m_freezeCount++ )
1043     {
1044         // physically freeze this window:
1045         DoFreeze();
1046
1047         // and recursively freeze all children:
1048         for ( wxWindowList::iterator i = GetChildren().begin();
1049               i != GetChildren().end(); ++i )
1050         {
1051             wxWindow *child = *i;
1052             if ( child->IsTopLevel() )
1053                 continue;
1054
1055             child->Freeze();
1056         }
1057     }
1058 }
1059
1060 void wxWindowBase::Thaw()
1061 {
1062     wxASSERT_MSG( m_freezeCount, "Thaw() without matching Freeze()" );
1063
1064     if ( !--m_freezeCount )
1065     {
1066         // recursively thaw all children:
1067         for ( wxWindowList::iterator i = GetChildren().begin();
1068               i != GetChildren().end(); ++i )
1069         {
1070             wxWindow *child = *i;
1071             if ( child->IsTopLevel() )
1072                 continue;
1073
1074             child->Thaw();
1075         }
1076
1077         // physically thaw this window:
1078         DoThaw();
1079     }
1080 }
1081
1082 // ----------------------------------------------------------------------------
1083 // reparenting the window
1084 // ----------------------------------------------------------------------------
1085
1086 void wxWindowBase::AddChild(wxWindowBase *child)
1087 {
1088     wxCHECK_RET( child, wxT("can't add a NULL child") );
1089
1090     // this should never happen and it will lead to a crash later if it does
1091     // because RemoveChild() will remove only one node from the children list
1092     // and the other(s) one(s) will be left with dangling pointers in them
1093     wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), wxT("AddChild() called twice") );
1094
1095     GetChildren().Append((wxWindow*)child);
1096     child->SetParent(this);
1097
1098     // adding a child while frozen will assert when thawed, so freeze it as if
1099     // it had been already present when we were frozen
1100     if ( IsFrozen() && !child->IsTopLevel() )
1101         child->Freeze();
1102 }
1103
1104 void wxWindowBase::RemoveChild(wxWindowBase *child)
1105 {
1106     wxCHECK_RET( child, wxT("can't remove a NULL child") );
1107
1108     // removing a child while frozen may result in permanently frozen window
1109     // if used e.g. from Reparent(), so thaw it
1110     //
1111     // NB: IsTopLevel() doesn't return true any more when a TLW child is being
1112     //     removed from its ~wxWindowBase, so check for IsBeingDeleted() too
1113     if ( IsFrozen() && !child->IsBeingDeleted() && !child->IsTopLevel() )
1114         child->Thaw();
1115
1116     GetChildren().DeleteObject((wxWindow *)child);
1117     child->SetParent(NULL);
1118 }
1119
1120 bool wxWindowBase::Reparent(wxWindowBase *newParent)
1121 {
1122     wxWindow *oldParent = GetParent();
1123     if ( newParent == oldParent )
1124     {
1125         // nothing done
1126         return false;
1127     }
1128
1129     const bool oldEnabledState = IsEnabled();
1130
1131     // unlink this window from the existing parent.
1132     if ( oldParent )
1133     {
1134         oldParent->RemoveChild(this);
1135     }
1136     else
1137     {
1138         wxTopLevelWindows.DeleteObject((wxWindow *)this);
1139     }
1140
1141     // add it to the new one
1142     if ( newParent )
1143     {
1144         newParent->AddChild(this);
1145     }
1146     else
1147     {
1148         wxTopLevelWindows.Append((wxWindow *)this);
1149     }
1150
1151     // We need to notify window (and its subwindows) if by changing the parent
1152     // we also change our enabled/disabled status.
1153     const bool newEnabledState = IsEnabled();
1154     if ( newEnabledState != oldEnabledState )
1155     {
1156         NotifyWindowOnEnableChange(newEnabledState);
1157     }
1158
1159     return true;
1160 }
1161
1162 // ----------------------------------------------------------------------------
1163 // event handler stuff
1164 // ----------------------------------------------------------------------------
1165
1166 void wxWindowBase::SetEventHandler(wxEvtHandler *handler)
1167 {
1168     wxCHECK_RET(handler != NULL, "SetEventHandler(NULL) called");
1169
1170     m_eventHandler = handler;
1171 }
1172
1173 void wxWindowBase::SetNextHandler(wxEvtHandler *WXUNUSED(handler))
1174 {
1175     // disable wxEvtHandler chain mechanism for wxWindows:
1176     // wxWindow uses its own stack mechanism which doesn't mix well with wxEvtHandler's one
1177
1178     wxFAIL_MSG("wxWindow cannot be part of a wxEvtHandler chain");
1179 }
1180 void wxWindowBase::SetPreviousHandler(wxEvtHandler *WXUNUSED(handler))
1181 {
1182     // we can't simply wxFAIL here as in SetNextHandler: in fact the last
1183     // handler of our stack when is destroyed will be Unlink()ed and thus
1184     // will call this function to update the pointer of this window...
1185
1186     //wxFAIL_MSG("wxWindow cannot be part of a wxEvtHandler chain");
1187 }
1188
1189 void wxWindowBase::PushEventHandler(wxEvtHandler *handlerToPush)
1190 {
1191     wxCHECK_RET( handlerToPush != NULL, "PushEventHandler(NULL) called" );
1192
1193     // the new handler is going to be part of the wxWindow stack of event handlers:
1194     // it can't be part also of an event handler double-linked chain:
1195     wxASSERT_MSG(handlerToPush->IsUnlinked(),
1196         "The handler being pushed in the wxWindow stack shouldn't be part of "
1197         "a wxEvtHandler chain; call Unlink() on it first");
1198
1199     wxEvtHandler *handlerOld = GetEventHandler();
1200     wxCHECK_RET( handlerOld, "an old event handler is NULL?" );
1201
1202     // now use wxEvtHandler double-linked list to implement a stack:
1203     handlerToPush->SetNextHandler(handlerOld);
1204
1205     if (handlerOld != this)
1206         handlerOld->SetPreviousHandler(handlerToPush);
1207
1208     SetEventHandler(handlerToPush);
1209
1210 #if wxDEBUG_LEVEL
1211     // final checks of the operations done above:
1212     wxASSERT_MSG( handlerToPush->GetPreviousHandler() == NULL,
1213         "the first handler of the wxWindow stack should "
1214         "have no previous handlers set" );
1215     wxASSERT_MSG( handlerToPush->GetNextHandler() != NULL,
1216         "the first handler of the wxWindow stack should "
1217         "have non-NULL next handler" );
1218
1219     wxEvtHandler* pLast = handlerToPush;
1220     while ( pLast && pLast != this )
1221         pLast = pLast->GetNextHandler();
1222     wxASSERT_MSG( pLast->GetNextHandler() == NULL,
1223         "the last handler of the wxWindow stack should "
1224         "have this window as next handler" );
1225 #endif // wxDEBUG_LEVEL
1226 }
1227
1228 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
1229 {
1230     // we need to pop the wxWindow stack, i.e. we need to remove the first handler
1231
1232     wxEvtHandler *firstHandler = GetEventHandler();
1233     wxCHECK_MSG( firstHandler != NULL, NULL, "wxWindow cannot have a NULL event handler" );
1234     wxCHECK_MSG( firstHandler != this, NULL, "cannot pop the wxWindow itself" );
1235     wxCHECK_MSG( firstHandler->GetPreviousHandler() == NULL, NULL,
1236         "the first handler of the wxWindow stack should have no previous handlers set" );
1237
1238     wxEvtHandler *secondHandler = firstHandler->GetNextHandler();
1239     wxCHECK_MSG( secondHandler != NULL, NULL,
1240         "the first handler of the wxWindow stack should have non-NULL next handler" );
1241
1242     firstHandler->SetNextHandler(NULL);
1243     secondHandler->SetPreviousHandler(NULL);
1244
1245     // now firstHandler is completely unlinked; set secondHandler as the new window event handler
1246     SetEventHandler(secondHandler);
1247
1248     if ( deleteHandler )
1249     {
1250         wxDELETE(firstHandler);
1251     }
1252
1253     return firstHandler;
1254 }
1255
1256 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handlerToRemove)
1257 {
1258     wxCHECK_MSG( handlerToRemove != NULL, false, "RemoveEventHandler(NULL) called" );
1259     wxCHECK_MSG( handlerToRemove != this, false, "Cannot remove the window itself" );
1260
1261     if (handlerToRemove == GetEventHandler())
1262     {
1263         // removing the first event handler is equivalent to "popping" the stack
1264         PopEventHandler(false);
1265         return true;
1266     }
1267
1268     // NOTE: the wxWindow event handler list is always terminated with "this" handler
1269     wxEvtHandler *handlerCur = GetEventHandler()->GetNextHandler();
1270     while ( handlerCur != this && handlerCur )
1271     {
1272         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
1273
1274         if ( handlerCur == handlerToRemove )
1275         {
1276             handlerCur->Unlink();
1277
1278             wxASSERT_MSG( handlerCur != GetEventHandler(),
1279                         "the case Remove == Pop should was already handled" );
1280             return true;
1281         }
1282
1283         handlerCur = handlerNext;
1284     }
1285
1286     wxFAIL_MSG( wxT("where has the event handler gone?") );
1287
1288     return false;
1289 }
1290
1291 bool wxWindowBase::HandleWindowEvent(wxEvent& event) const
1292 {
1293     // SafelyProcessEvent() will handle exceptions nicely
1294     return GetEventHandler()->SafelyProcessEvent(event);
1295 }
1296
1297 // ----------------------------------------------------------------------------
1298 // colours, fonts &c
1299 // ----------------------------------------------------------------------------
1300
1301 void wxWindowBase::InheritAttributes()
1302 {
1303     const wxWindowBase * const parent = GetParent();
1304     if ( !parent )
1305         return;
1306
1307     // we only inherit attributes which had been explicitly set for the parent
1308     // which ensures that this only happens if the user really wants it and
1309     // not by default which wouldn't make any sense in modern GUIs where the
1310     // controls don't all use the same fonts (nor colours)
1311     if ( parent->m_inheritFont && !m_hasFont )
1312         SetFont(parent->GetFont());
1313
1314     // in addition, there is a possibility to explicitly forbid inheriting
1315     // colours at each class level by overriding ShouldInheritColours()
1316     if ( ShouldInheritColours() )
1317     {
1318         if ( parent->m_inheritFgCol && !m_hasFgCol )
1319             SetForegroundColour(parent->GetForegroundColour());
1320
1321         // inheriting (solid) background colour is wrong as it totally breaks
1322         // any kind of themed backgrounds
1323         //
1324         // instead, the controls should use the same background as their parent
1325         // (ideally by not drawing it at all)
1326 #if 0
1327         if ( parent->m_inheritBgCol && !m_hasBgCol )
1328             SetBackgroundColour(parent->GetBackgroundColour());
1329 #endif // 0
1330     }
1331 }
1332
1333 /* static */ wxVisualAttributes
1334 wxWindowBase::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1335 {
1336     // it is important to return valid values for all attributes from here,
1337     // GetXXX() below rely on this
1338     wxVisualAttributes attrs;
1339     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
1340     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
1341
1342     // On Smartphone/PocketPC, wxSYS_COLOUR_WINDOW is a better reflection of
1343     // the usual background colour than wxSYS_COLOUR_BTNFACE.
1344     // It's a pity that wxSYS_COLOUR_WINDOW isn't always a suitable background
1345     // colour on other platforms.
1346
1347 #if defined(__WXWINCE__) && (defined(__SMARTPHONE__) || defined(__POCKETPC__))
1348     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1349 #else
1350     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
1351 #endif
1352     return attrs;
1353 }
1354
1355 wxColour wxWindowBase::GetBackgroundColour() const
1356 {
1357     if ( !m_backgroundColour.IsOk() )
1358     {
1359         wxASSERT_MSG( !m_hasBgCol, wxT("we have invalid explicit bg colour?") );
1360
1361         // get our default background colour
1362         wxColour colBg = GetDefaultAttributes().colBg;
1363
1364         // we must return some valid colour to avoid redoing this every time
1365         // and also to avoid surprising the applications written for older
1366         // wxWidgets versions where GetBackgroundColour() always returned
1367         // something -- so give them something even if it doesn't make sense
1368         // for this window (e.g. it has a themed background)
1369         if ( !colBg.Ok() )
1370             colBg = GetClassDefaultAttributes().colBg;
1371
1372         return colBg;
1373     }
1374     else
1375         return m_backgroundColour;
1376 }
1377
1378 wxColour wxWindowBase::GetForegroundColour() const
1379 {
1380     // logic is the same as above
1381     if ( !m_hasFgCol && !m_foregroundColour.Ok() )
1382     {
1383         wxColour colFg = GetDefaultAttributes().colFg;
1384
1385         if ( !colFg.IsOk() )
1386             colFg = GetClassDefaultAttributes().colFg;
1387
1388         return colFg;
1389     }
1390     else
1391         return m_foregroundColour;
1392 }
1393
1394 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
1395 {
1396     if ( colour == m_backgroundColour )
1397         return false;
1398
1399     m_hasBgCol = colour.IsOk();
1400
1401     m_inheritBgCol = m_hasBgCol;
1402     m_backgroundColour = colour;
1403     SetThemeEnabled( !m_hasBgCol && !m_foregroundColour.Ok() );
1404     return true;
1405 }
1406
1407 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
1408 {
1409     if (colour == m_foregroundColour )
1410         return false;
1411
1412     m_hasFgCol = colour.IsOk();
1413     m_inheritFgCol = m_hasFgCol;
1414     m_foregroundColour = colour;
1415     SetThemeEnabled( !m_hasFgCol && !m_backgroundColour.Ok() );
1416     return true;
1417 }
1418
1419 bool wxWindowBase::SetCursor(const wxCursor& cursor)
1420 {
1421     // setting an invalid cursor is ok, it means that we don't have any special
1422     // cursor
1423     if ( m_cursor.IsSameAs(cursor) )
1424     {
1425         // no change
1426         return false;
1427     }
1428
1429     m_cursor = cursor;
1430
1431     return true;
1432 }
1433
1434 wxFont wxWindowBase::GetFont() const
1435 {
1436     // logic is the same as in GetBackgroundColour()
1437     if ( !m_font.IsOk() )
1438     {
1439         wxASSERT_MSG( !m_hasFont, wxT("we have invalid explicit font?") );
1440
1441         wxFont font = GetDefaultAttributes().font;
1442         if ( !font.IsOk() )
1443             font = GetClassDefaultAttributes().font;
1444
1445         return font;
1446     }
1447     else
1448         return m_font;
1449 }
1450
1451 bool wxWindowBase::SetFont(const wxFont& font)
1452 {
1453     if ( font == m_font )
1454     {
1455         // no change
1456         return false;
1457     }
1458
1459     m_font = font;
1460     m_hasFont = font.IsOk();
1461     m_inheritFont = m_hasFont;
1462
1463     InvalidateBestSize();
1464
1465     return true;
1466 }
1467
1468 #if wxUSE_PALETTE
1469
1470 void wxWindowBase::SetPalette(const wxPalette& pal)
1471 {
1472     m_hasCustomPalette = true;
1473     m_palette = pal;
1474
1475     // VZ: can anyone explain me what do we do here?
1476     wxWindowDC d((wxWindow *) this);
1477     d.SetPalette(pal);
1478 }
1479
1480 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
1481 {
1482     wxWindow *win = (wxWindow *)this;
1483     while ( win && !win->HasCustomPalette() )
1484     {
1485         win = win->GetParent();
1486     }
1487
1488     return win;
1489 }
1490
1491 #endif // wxUSE_PALETTE
1492
1493 #if wxUSE_CARET
1494 void wxWindowBase::SetCaret(wxCaret *caret)
1495 {
1496     if ( m_caret )
1497     {
1498         delete m_caret;
1499     }
1500
1501     m_caret = caret;
1502
1503     if ( m_caret )
1504     {
1505         wxASSERT_MSG( m_caret->GetWindow() == this,
1506                       wxT("caret should be created associated to this window") );
1507     }
1508 }
1509 #endif // wxUSE_CARET
1510
1511 #if wxUSE_VALIDATORS
1512 // ----------------------------------------------------------------------------
1513 // validators
1514 // ----------------------------------------------------------------------------
1515
1516 void wxWindowBase::SetValidator(const wxValidator& validator)
1517 {
1518     if ( m_windowValidator )
1519         delete m_windowValidator;
1520
1521     m_windowValidator = (wxValidator *)validator.Clone();
1522
1523     if ( m_windowValidator )
1524         m_windowValidator->SetWindow(this);
1525 }
1526 #endif // wxUSE_VALIDATORS
1527
1528 // ----------------------------------------------------------------------------
1529 // update region stuff
1530 // ----------------------------------------------------------------------------
1531
1532 wxRect wxWindowBase::GetUpdateClientRect() const
1533 {
1534     wxRegion rgnUpdate = GetUpdateRegion();
1535     rgnUpdate.Intersect(GetClientRect());
1536     wxRect rectUpdate = rgnUpdate.GetBox();
1537     wxPoint ptOrigin = GetClientAreaOrigin();
1538     rectUpdate.x -= ptOrigin.x;
1539     rectUpdate.y -= ptOrigin.y;
1540
1541     return rectUpdate;
1542 }
1543
1544 bool wxWindowBase::DoIsExposed(int x, int y) const
1545 {
1546     return m_updateRegion.Contains(x, y) != wxOutRegion;
1547 }
1548
1549 bool wxWindowBase::DoIsExposed(int x, int y, int w, int h) const
1550 {
1551     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
1552 }
1553
1554 void wxWindowBase::ClearBackground()
1555 {
1556     // wxGTK uses its own version, no need to add never used code
1557 #ifndef __WXGTK__
1558     wxClientDC dc((wxWindow *)this);
1559     wxBrush brush(GetBackgroundColour(), wxBRUSHSTYLE_SOLID);
1560     dc.SetBackground(brush);
1561     dc.Clear();
1562 #endif // __WXGTK__
1563 }
1564
1565 // ----------------------------------------------------------------------------
1566 // find child window by id or name
1567 // ----------------------------------------------------------------------------
1568
1569 wxWindow *wxWindowBase::FindWindow(long id) const
1570 {
1571     if ( id == m_windowId )
1572         return (wxWindow *)this;
1573
1574     wxWindowBase *res = NULL;
1575     wxWindowList::compatibility_iterator node;
1576     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1577     {
1578         wxWindowBase *child = node->GetData();
1579         res = child->FindWindow( id );
1580     }
1581
1582     return (wxWindow *)res;
1583 }
1584
1585 wxWindow *wxWindowBase::FindWindow(const wxString& name) const
1586 {
1587     if ( name == m_windowName )
1588         return (wxWindow *)this;
1589
1590     wxWindowBase *res = NULL;
1591     wxWindowList::compatibility_iterator node;
1592     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1593     {
1594         wxWindow *child = node->GetData();
1595         res = child->FindWindow(name);
1596     }
1597
1598     return (wxWindow *)res;
1599 }
1600
1601
1602 // find any window by id or name or label: If parent is non-NULL, look through
1603 // children for a label or title matching the specified string. If NULL, look
1604 // through all top-level windows.
1605 //
1606 // to avoid duplicating code we reuse the same helper function but with
1607 // different comparators
1608
1609 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1610                                 const wxString& label, long id);
1611
1612 static
1613 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1614                            long WXUNUSED(id))
1615 {
1616     return win->GetLabel() == label;
1617 }
1618
1619 static
1620 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1621                           long WXUNUSED(id))
1622 {
1623     return win->GetName() == label;
1624 }
1625
1626 static
1627 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1628                         long id)
1629 {
1630     return win->GetId() == id;
1631 }
1632
1633 // recursive helper for the FindWindowByXXX() functions
1634 static
1635 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1636                                   const wxString& label,
1637                                   long id,
1638                                   wxFindWindowCmp cmp)
1639 {
1640     if ( parent )
1641     {
1642         // see if this is the one we're looking for
1643         if ( (*cmp)(parent, label, id) )
1644             return (wxWindow *)parent;
1645
1646         // It wasn't, so check all its children
1647         for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
1648               node;
1649               node = node->GetNext() )
1650         {
1651             // recursively check each child
1652             wxWindow *win = (wxWindow *)node->GetData();
1653             wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1654             if (retwin)
1655                 return retwin;
1656         }
1657     }
1658
1659     // Not found
1660     return NULL;
1661 }
1662
1663 // helper for FindWindowByXXX()
1664 static
1665 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1666                              const wxString& label,
1667                              long id,
1668                              wxFindWindowCmp cmp)
1669 {
1670     if ( parent )
1671     {
1672         // just check parent and all its children
1673         return wxFindWindowRecursively(parent, label, id, cmp);
1674     }
1675
1676     // start at very top of wx's windows
1677     for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1678           node;
1679           node = node->GetNext() )
1680     {
1681         // recursively check each window & its children
1682         wxWindow *win = node->GetData();
1683         wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1684         if (retwin)
1685             return retwin;
1686     }
1687
1688     return NULL;
1689 }
1690
1691 /* static */
1692 wxWindow *
1693 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1694 {
1695     return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1696 }
1697
1698 /* static */
1699 wxWindow *
1700 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1701 {
1702     wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1703
1704     if ( !win )
1705     {
1706         // fall back to the label
1707         win = FindWindowByLabel(title, parent);
1708     }
1709
1710     return win;
1711 }
1712
1713 /* static */
1714 wxWindow *
1715 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1716 {
1717     return wxFindWindowHelper(parent, wxEmptyString, id, wxFindWindowCmpIds);
1718 }
1719
1720 // ----------------------------------------------------------------------------
1721 // dialog oriented functions
1722 // ----------------------------------------------------------------------------
1723
1724 void wxWindowBase::MakeModal(bool modal)
1725 {
1726     // Disable all other windows
1727     if ( IsTopLevel() )
1728     {
1729         wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1730         while (node)
1731         {
1732             wxWindow *win = node->GetData();
1733             if (win != this)
1734                 win->Enable(!modal);
1735
1736             node = node->GetNext();
1737         }
1738     }
1739 }
1740
1741 bool wxWindowBase::Validate()
1742 {
1743 #if wxUSE_VALIDATORS
1744     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1745
1746     wxWindowList::compatibility_iterator node;
1747     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1748     {
1749         wxWindowBase *child = node->GetData();
1750         wxValidator *validator = child->GetValidator();
1751         if ( validator && !validator->Validate((wxWindow *)this) )
1752         {
1753             return false;
1754         }
1755
1756         if ( recurse && !child->Validate() )
1757         {
1758             return false;
1759         }
1760     }
1761 #endif // wxUSE_VALIDATORS
1762
1763     return true;
1764 }
1765
1766 bool wxWindowBase::TransferDataToWindow()
1767 {
1768 #if wxUSE_VALIDATORS
1769     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1770
1771     wxWindowList::compatibility_iterator node;
1772     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1773     {
1774         wxWindowBase *child = node->GetData();
1775         wxValidator *validator = child->GetValidator();
1776         if ( validator && !validator->TransferToWindow() )
1777         {
1778             wxLogWarning(_("Could not transfer data to window"));
1779 #if wxUSE_LOG
1780             wxLog::FlushActive();
1781 #endif // wxUSE_LOG
1782
1783             return false;
1784         }
1785
1786         if ( recurse )
1787         {
1788             if ( !child->TransferDataToWindow() )
1789             {
1790                 // warning already given
1791                 return false;
1792             }
1793         }
1794     }
1795 #endif // wxUSE_VALIDATORS
1796
1797     return true;
1798 }
1799
1800 bool wxWindowBase::TransferDataFromWindow()
1801 {
1802 #if wxUSE_VALIDATORS
1803     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1804
1805     wxWindowList::compatibility_iterator node;
1806     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1807     {
1808         wxWindow *child = node->GetData();
1809         wxValidator *validator = child->GetValidator();
1810         if ( validator && !validator->TransferFromWindow() )
1811         {
1812             // nop warning here because the application is supposed to give
1813             // one itself - we don't know here what might have gone wrongly
1814
1815             return false;
1816         }
1817
1818         if ( recurse )
1819         {
1820             if ( !child->TransferDataFromWindow() )
1821             {
1822                 // warning already given
1823                 return false;
1824             }
1825         }
1826     }
1827 #endif // wxUSE_VALIDATORS
1828
1829     return true;
1830 }
1831
1832 void wxWindowBase::InitDialog()
1833 {
1834     wxInitDialogEvent event(GetId());
1835     event.SetEventObject( this );
1836     GetEventHandler()->ProcessEvent(event);
1837 }
1838
1839 // ----------------------------------------------------------------------------
1840 // context-sensitive help support
1841 // ----------------------------------------------------------------------------
1842
1843 #if wxUSE_HELP
1844
1845 // associate this help text with this window
1846 void wxWindowBase::SetHelpText(const wxString& text)
1847 {
1848     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1849     if ( helpProvider )
1850     {
1851         helpProvider->AddHelp(this, text);
1852     }
1853 }
1854
1855 #if WXWIN_COMPATIBILITY_2_8
1856 // associate this help text with all windows with the same id as this
1857 // one
1858 void wxWindowBase::SetHelpTextForId(const wxString& text)
1859 {
1860     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1861     if ( helpProvider )
1862     {
1863         helpProvider->AddHelp(GetId(), text);
1864     }
1865 }
1866 #endif // WXWIN_COMPATIBILITY_2_8
1867
1868 // get the help string associated with this window (may be empty)
1869 // default implementation forwards calls to the help provider
1870 wxString
1871 wxWindowBase::GetHelpTextAtPoint(const wxPoint & WXUNUSED(pt),
1872                                  wxHelpEvent::Origin WXUNUSED(origin)) const
1873 {
1874     wxString text;
1875     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1876     if ( helpProvider )
1877     {
1878         text = helpProvider->GetHelp(this);
1879     }
1880
1881     return text;
1882 }
1883
1884 // show help for this window
1885 void wxWindowBase::OnHelp(wxHelpEvent& event)
1886 {
1887     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1888     if ( helpProvider )
1889     {
1890         wxPoint pos = event.GetPosition();
1891         const wxHelpEvent::Origin origin = event.GetOrigin();
1892         if ( origin == wxHelpEvent::Origin_Keyboard )
1893         {
1894             // if the help event was generated from keyboard it shouldn't
1895             // appear at the mouse position (which is still the only position
1896             // associated with help event) if the mouse is far away, although
1897             // we still do use the mouse position if it's over the window
1898             // because we suppose the user looks approximately at the mouse
1899             // already and so it would be more convenient than showing tooltip
1900             // at some arbitrary position which can be quite far from it
1901             const wxRect rectClient = GetClientRect();
1902             if ( !rectClient.Contains(ScreenToClient(pos)) )
1903             {
1904                 // position help slightly under and to the right of this window
1905                 pos = ClientToScreen(wxPoint(
1906                         2*GetCharWidth(),
1907                         rectClient.height + GetCharHeight()
1908                       ));
1909             }
1910         }
1911
1912         if ( helpProvider->ShowHelpAtPoint(this, pos, origin) )
1913         {
1914             // skip the event.Skip() below
1915             return;
1916         }
1917     }
1918
1919     event.Skip();
1920 }
1921
1922 #endif // wxUSE_HELP
1923
1924 // ----------------------------------------------------------------------------
1925 // tooltips
1926 // ----------------------------------------------------------------------------
1927
1928 #if wxUSE_TOOLTIPS
1929
1930 wxString wxWindowBase::GetToolTipText() const
1931 {
1932     return m_tooltip ? m_tooltip->GetTip() : wxString();
1933 }
1934
1935 void wxWindowBase::SetToolTip( const wxString &tip )
1936 {
1937     // don't create the new tooltip if we already have one
1938     if ( m_tooltip )
1939     {
1940         m_tooltip->SetTip( tip );
1941     }
1942     else
1943     {
1944         SetToolTip( new wxToolTip( tip ) );
1945     }
1946
1947     // setting empty tooltip text does not remove the tooltip any more - use
1948     // SetToolTip(NULL) for this
1949 }
1950
1951 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1952 {
1953     if ( m_tooltip != tooltip )
1954     {
1955         if ( m_tooltip )
1956             delete m_tooltip;
1957
1958         m_tooltip = tooltip;
1959     }
1960 }
1961
1962 #endif // wxUSE_TOOLTIPS
1963
1964 // ----------------------------------------------------------------------------
1965 // constraints and sizers
1966 // ----------------------------------------------------------------------------
1967
1968 #if wxUSE_CONSTRAINTS
1969
1970 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1971 {
1972     if ( m_constraints )
1973     {
1974         UnsetConstraints(m_constraints);
1975         delete m_constraints;
1976     }
1977     m_constraints = constraints;
1978     if ( m_constraints )
1979     {
1980         // Make sure other windows know they're part of a 'meaningful relationship'
1981         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1982             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1983         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1984             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1985         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1986             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1987         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1988             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1989         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1990             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1991         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1992             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1993         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1994             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1995         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1996             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1997     }
1998 }
1999
2000 // This removes any dangling pointers to this window in other windows'
2001 // constraintsInvolvedIn lists.
2002 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
2003 {
2004     if ( c )
2005     {
2006         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
2007             c->left.GetOtherWindow()->RemoveConstraintReference(this);
2008         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
2009             c->top.GetOtherWindow()->RemoveConstraintReference(this);
2010         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
2011             c->right.GetOtherWindow()->RemoveConstraintReference(this);
2012         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
2013             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
2014         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
2015             c->width.GetOtherWindow()->RemoveConstraintReference(this);
2016         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
2017             c->height.GetOtherWindow()->RemoveConstraintReference(this);
2018         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
2019             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
2020         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
2021             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
2022     }
2023 }
2024
2025 // Back-pointer to other windows we're involved with, so if we delete this
2026 // window, we must delete any constraints we're involved with.
2027 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
2028 {
2029     if ( !m_constraintsInvolvedIn )
2030         m_constraintsInvolvedIn = new wxWindowList;
2031     if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
2032         m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
2033 }
2034
2035 // REMOVE back-pointer to other windows we're involved with.
2036 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
2037 {
2038     if ( m_constraintsInvolvedIn )
2039         m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
2040 }
2041
2042 // Reset any constraints that mention this window
2043 void wxWindowBase::DeleteRelatedConstraints()
2044 {
2045     if ( m_constraintsInvolvedIn )
2046     {
2047         wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
2048         while (node)
2049         {
2050             wxWindow *win = node->GetData();
2051             wxLayoutConstraints *constr = win->GetConstraints();
2052
2053             // Reset any constraints involving this window
2054             if ( constr )
2055             {
2056                 constr->left.ResetIfWin(this);
2057                 constr->top.ResetIfWin(this);
2058                 constr->right.ResetIfWin(this);
2059                 constr->bottom.ResetIfWin(this);
2060                 constr->width.ResetIfWin(this);
2061                 constr->height.ResetIfWin(this);
2062                 constr->centreX.ResetIfWin(this);
2063                 constr->centreY.ResetIfWin(this);
2064             }
2065
2066             wxWindowList::compatibility_iterator next = node->GetNext();
2067             m_constraintsInvolvedIn->Erase(node);
2068             node = next;
2069         }
2070
2071         wxDELETE(m_constraintsInvolvedIn);
2072     }
2073 }
2074
2075 #endif // wxUSE_CONSTRAINTS
2076
2077 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
2078 {
2079     if ( sizer == m_windowSizer)
2080         return;
2081
2082     if ( m_windowSizer )
2083     {
2084         m_windowSizer->SetContainingWindow(NULL);
2085
2086         if ( deleteOld )
2087             delete m_windowSizer;
2088     }
2089
2090     m_windowSizer = sizer;
2091     if ( m_windowSizer )
2092     {
2093         m_windowSizer->SetContainingWindow((wxWindow *)this);
2094     }
2095
2096     SetAutoLayout(m_windowSizer != NULL);
2097 }
2098
2099 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
2100 {
2101     SetSizer( sizer, deleteOld );
2102     sizer->SetSizeHints( (wxWindow*) this );
2103 }
2104
2105
2106 void wxWindowBase::SetContainingSizer(wxSizer* sizer)
2107 {
2108     // adding a window to a sizer twice is going to result in fatal and
2109     // hard to debug problems later because when deleting the second
2110     // associated wxSizerItem we're going to dereference a dangling
2111     // pointer; so try to detect this as early as possible
2112     wxASSERT_MSG( !sizer || m_containingSizer != sizer,
2113                   wxT("Adding a window to the same sizer twice?") );
2114
2115     m_containingSizer = sizer;
2116 }
2117
2118 #if wxUSE_CONSTRAINTS
2119
2120 void wxWindowBase::SatisfyConstraints()
2121 {
2122     wxLayoutConstraints *constr = GetConstraints();
2123     bool wasOk = constr && constr->AreSatisfied();
2124
2125     ResetConstraints();   // Mark all constraints as unevaluated
2126
2127     int noChanges = 1;
2128
2129     // if we're a top level panel (i.e. our parent is frame/dialog), our
2130     // own constraints will never be satisfied any more unless we do it
2131     // here
2132     if ( wasOk )
2133     {
2134         while ( noChanges > 0 )
2135         {
2136             LayoutPhase1(&noChanges);
2137         }
2138     }
2139
2140     LayoutPhase2(&noChanges);
2141 }
2142
2143 #endif // wxUSE_CONSTRAINTS
2144
2145 bool wxWindowBase::Layout()
2146 {
2147     // If there is a sizer, use it instead of the constraints
2148     if ( GetSizer() )
2149     {
2150         int w = 0, h = 0;
2151         GetVirtualSize(&w, &h);
2152         GetSizer()->SetDimension( 0, 0, w, h );
2153     }
2154 #if wxUSE_CONSTRAINTS
2155     else
2156     {
2157         SatisfyConstraints(); // Find the right constraints values
2158         SetConstraintSizes(); // Recursively set the real window sizes
2159     }
2160 #endif
2161
2162     return true;
2163 }
2164
2165 void wxWindowBase::InternalOnSize(wxSizeEvent& event)
2166 {
2167     if ( GetAutoLayout() )
2168         Layout();
2169
2170     event.Skip();
2171 }
2172
2173 #if wxUSE_CONSTRAINTS
2174
2175 // first phase of the constraints evaluation: set our own constraints
2176 bool wxWindowBase::LayoutPhase1(int *noChanges)
2177 {
2178     wxLayoutConstraints *constr = GetConstraints();
2179
2180     return !constr || constr->SatisfyConstraints(this, noChanges);
2181 }
2182
2183 // second phase: set the constraints for our children
2184 bool wxWindowBase::LayoutPhase2(int *noChanges)
2185 {
2186     *noChanges = 0;
2187
2188     // Layout children
2189     DoPhase(1);
2190
2191     // Layout grand children
2192     DoPhase(2);
2193
2194     return true;
2195 }
2196
2197 // Do a phase of evaluating child constraints
2198 bool wxWindowBase::DoPhase(int phase)
2199 {
2200     // the list containing the children for which the constraints are already
2201     // set correctly
2202     wxWindowList succeeded;
2203
2204     // the max number of iterations we loop before concluding that we can't set
2205     // the constraints
2206     static const int maxIterations = 500;
2207
2208     for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
2209     {
2210         int noChanges = 0;
2211
2212         // loop over all children setting their constraints
2213         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2214               node;
2215               node = node->GetNext() )
2216         {
2217             wxWindow *child = node->GetData();
2218             if ( child->IsTopLevel() )
2219             {
2220                 // top level children are not inside our client area
2221                 continue;
2222             }
2223
2224             if ( !child->GetConstraints() || succeeded.Find(child) )
2225             {
2226                 // this one is either already ok or nothing we can do about it
2227                 continue;
2228             }
2229
2230             int tempNoChanges = 0;
2231             bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
2232                                       : child->LayoutPhase2(&tempNoChanges);
2233             noChanges += tempNoChanges;
2234
2235             if ( success )
2236             {
2237                 succeeded.Append(child);
2238             }
2239         }
2240
2241         if ( !noChanges )
2242         {
2243             // constraints are set
2244             break;
2245         }
2246     }
2247
2248     return true;
2249 }
2250
2251 void wxWindowBase::ResetConstraints()
2252 {
2253     wxLayoutConstraints *constr = GetConstraints();
2254     if ( constr )
2255     {
2256         constr->left.SetDone(false);
2257         constr->top.SetDone(false);
2258         constr->right.SetDone(false);
2259         constr->bottom.SetDone(false);
2260         constr->width.SetDone(false);
2261         constr->height.SetDone(false);
2262         constr->centreX.SetDone(false);
2263         constr->centreY.SetDone(false);
2264     }
2265
2266     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2267     while (node)
2268     {
2269         wxWindow *win = node->GetData();
2270         if ( !win->IsTopLevel() )
2271             win->ResetConstraints();
2272         node = node->GetNext();
2273     }
2274 }
2275
2276 // Need to distinguish between setting the 'fake' size for windows and sizers,
2277 // and setting the real values.
2278 void wxWindowBase::SetConstraintSizes(bool recurse)
2279 {
2280     wxLayoutConstraints *constr = GetConstraints();
2281     if ( constr && constr->AreSatisfied() )
2282     {
2283         int x = constr->left.GetValue();
2284         int y = constr->top.GetValue();
2285         int w = constr->width.GetValue();
2286         int h = constr->height.GetValue();
2287
2288         if ( (constr->width.GetRelationship() != wxAsIs ) ||
2289              (constr->height.GetRelationship() != wxAsIs) )
2290         {
2291             // We really shouldn't set negative sizes for the windows so make
2292             // them at least of 1*1 size
2293             SetSize(x, y, w > 0 ? w : 1, h > 0 ? h : 1);
2294         }
2295         else
2296         {
2297             // If we don't want to resize this window, just move it...
2298             Move(x, y);
2299         }
2300     }
2301     else if ( constr )
2302     {
2303         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
2304                    GetClassInfo()->GetClassName(),
2305                    GetName().c_str());
2306     }
2307
2308     if ( recurse )
2309     {
2310         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2311         while (node)
2312         {
2313             wxWindow *win = node->GetData();
2314             if ( !win->IsTopLevel() && win->GetConstraints() )
2315                 win->SetConstraintSizes();
2316             node = node->GetNext();
2317         }
2318     }
2319 }
2320
2321 // Only set the size/position of the constraint (if any)
2322 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
2323 {
2324     wxLayoutConstraints *constr = GetConstraints();
2325     if ( constr )
2326     {
2327         if ( x != wxDefaultCoord )
2328         {
2329             constr->left.SetValue(x);
2330             constr->left.SetDone(true);
2331         }
2332         if ( y != wxDefaultCoord )
2333         {
2334             constr->top.SetValue(y);
2335             constr->top.SetDone(true);
2336         }
2337         if ( w != wxDefaultCoord )
2338         {
2339             constr->width.SetValue(w);
2340             constr->width.SetDone(true);
2341         }
2342         if ( h != wxDefaultCoord )
2343         {
2344             constr->height.SetValue(h);
2345             constr->height.SetDone(true);
2346         }
2347     }
2348 }
2349
2350 void wxWindowBase::MoveConstraint(int x, int y)
2351 {
2352     wxLayoutConstraints *constr = GetConstraints();
2353     if ( constr )
2354     {
2355         if ( x != wxDefaultCoord )
2356         {
2357             constr->left.SetValue(x);
2358             constr->left.SetDone(true);
2359         }
2360         if ( y != wxDefaultCoord )
2361         {
2362             constr->top.SetValue(y);
2363             constr->top.SetDone(true);
2364         }
2365     }
2366 }
2367
2368 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
2369 {
2370     wxLayoutConstraints *constr = GetConstraints();
2371     if ( constr )
2372     {
2373         *w = constr->width.GetValue();
2374         *h = constr->height.GetValue();
2375     }
2376     else
2377         GetSize(w, h);
2378 }
2379
2380 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
2381 {
2382     wxLayoutConstraints *constr = GetConstraints();
2383     if ( constr )
2384     {
2385         *w = constr->width.GetValue();
2386         *h = constr->height.GetValue();
2387     }
2388     else
2389         GetClientSize(w, h);
2390 }
2391
2392 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
2393 {
2394     wxLayoutConstraints *constr = GetConstraints();
2395     if ( constr )
2396     {
2397         *x = constr->left.GetValue();
2398         *y = constr->top.GetValue();
2399     }
2400     else
2401         GetPosition(x, y);
2402 }
2403
2404 #endif // wxUSE_CONSTRAINTS
2405
2406 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
2407 {
2408     // don't do it for the dialogs/frames - they float independently of their
2409     // parent
2410     if ( !IsTopLevel() )
2411     {
2412         wxWindow *parent = GetParent();
2413         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
2414         {
2415             wxPoint pt(parent->GetClientAreaOrigin());
2416             x += pt.x;
2417             y += pt.y;
2418         }
2419     }
2420 }
2421
2422 // ----------------------------------------------------------------------------
2423 // Update UI processing
2424 // ----------------------------------------------------------------------------
2425
2426 void wxWindowBase::UpdateWindowUI(long flags)
2427 {
2428     wxUpdateUIEvent event(GetId());
2429     event.SetEventObject(this);
2430
2431     if ( GetEventHandler()->ProcessEvent(event) )
2432     {
2433         DoUpdateWindowUI(event);
2434     }
2435
2436     if (flags & wxUPDATE_UI_RECURSE)
2437     {
2438         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2439         while (node)
2440         {
2441             wxWindow* child = (wxWindow*) node->GetData();
2442             child->UpdateWindowUI(flags);
2443             node = node->GetNext();
2444         }
2445     }
2446 }
2447
2448 // do the window-specific processing after processing the update event
2449 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
2450 {
2451     if ( event.GetSetEnabled() )
2452         Enable(event.GetEnabled());
2453
2454     if ( event.GetSetShown() )
2455         Show(event.GetShown());
2456 }
2457
2458 // ----------------------------------------------------------------------------
2459 // dialog units translations
2460 // ----------------------------------------------------------------------------
2461
2462 // Windows' computes dialog units using average character width over upper-
2463 // and lower-case ASCII alphabet and not using the average character width
2464 // metadata stored in the font; see
2465 // http://support.microsoft.com/default.aspx/kb/145994 for detailed discussion.
2466 // It's important that we perform the conversion in identical way, because
2467 // dialog units natively exist only on Windows and Windows HIG is expressed
2468 // using them.
2469 wxSize wxWindowBase::GetDlgUnitBase() const
2470 {
2471     const wxWindow *parent = wxGetTopLevelParent((wxWindow*)this);
2472
2473     if ( !parent->m_font.IsOk() )
2474     {
2475         // Default GUI font is used. This is the most common case, so
2476         // cache the results.
2477         static wxSize s_defFontSize;
2478         if ( s_defFontSize.x == 0 )
2479             s_defFontSize = wxPrivate::GetAverageASCIILetterSize(*parent);
2480         return s_defFontSize;
2481     }
2482     else
2483     {
2484         // Custom font, we always need to compute the result
2485         return wxPrivate::GetAverageASCIILetterSize(*parent);
2486     }
2487 }
2488
2489 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt) const
2490 {
2491     const wxSize base = GetDlgUnitBase();
2492
2493     // NB: wxMulDivInt32() is used, because it correctly rounds the result
2494
2495     wxPoint pt2 = wxDefaultPosition;
2496     if (pt.x != wxDefaultCoord)
2497         pt2.x = wxMulDivInt32(pt.x, 4, base.x);
2498     if (pt.y != wxDefaultCoord)
2499         pt2.y = wxMulDivInt32(pt.y, 8, base.y);
2500
2501     return pt2;
2502 }
2503
2504 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt) const
2505 {
2506     const wxSize base = GetDlgUnitBase();
2507
2508     wxPoint pt2 = wxDefaultPosition;
2509     if (pt.x != wxDefaultCoord)
2510         pt2.x = wxMulDivInt32(pt.x, base.x, 4);
2511     if (pt.y != wxDefaultCoord)
2512         pt2.y = wxMulDivInt32(pt.y, base.y, 8);
2513
2514     return pt2;
2515 }
2516
2517 // ----------------------------------------------------------------------------
2518 // event handlers
2519 // ----------------------------------------------------------------------------
2520
2521 // propagate the colour change event to the subwindows
2522 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& WXUNUSED(event))
2523 {
2524     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2525     while ( node )
2526     {
2527         // Only propagate to non-top-level windows
2528         wxWindow *win = node->GetData();
2529         if ( !win->IsTopLevel() )
2530         {
2531             wxSysColourChangedEvent event2;
2532             event2.SetEventObject(win);
2533             win->GetEventHandler()->ProcessEvent(event2);
2534         }
2535
2536         node = node->GetNext();
2537     }
2538
2539     Refresh();
2540 }
2541
2542 // the default action is to populate dialog with data when it's created,
2543 // and nudge the UI into displaying itself correctly in case
2544 // we've turned the wxUpdateUIEvents frequency down low.
2545 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
2546 {
2547     TransferDataToWindow();
2548
2549     // Update the UI at this point
2550     UpdateWindowUI(wxUPDATE_UI_RECURSE);
2551 }
2552
2553 // ----------------------------------------------------------------------------
2554 // menu-related functions
2555 // ----------------------------------------------------------------------------
2556
2557 #if wxUSE_MENUS
2558
2559 bool wxWindowBase::PopupMenu(wxMenu *menu, int x, int y)
2560 {
2561     wxCHECK_MSG( menu, false, "can't popup NULL menu" );
2562
2563     wxMenuInvokingWindowSetter
2564         setInvokingWin(*menu, static_cast<wxWindow *>(this));
2565
2566     wxCurrentPopupMenu = menu;
2567     const bool rc = DoPopupMenu(menu, x, y);
2568     wxCurrentPopupMenu = NULL;
2569
2570     return rc;
2571 }
2572
2573 // this is used to pass the id of the selected item from the menu event handler
2574 // to the main function itself
2575 //
2576 // it's ok to use a global here as there can be at most one popup menu shown at
2577 // any time
2578 static int gs_popupMenuSelection = wxID_NONE;
2579
2580 void wxWindowBase::InternalOnPopupMenu(wxCommandEvent& event)
2581 {
2582     // store the id in a global variable where we'll retrieve it from later
2583     gs_popupMenuSelection = event.GetId();
2584 }
2585
2586 void wxWindowBase::InternalOnPopupMenuUpdate(wxUpdateUIEvent& WXUNUSED(event))
2587 {
2588     // nothing to do but do not skip it
2589 }
2590
2591 int
2592 wxWindowBase::DoGetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y)
2593 {
2594     gs_popupMenuSelection = wxID_NONE;
2595
2596     Connect(wxEVT_COMMAND_MENU_SELECTED,
2597             wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2598             NULL,
2599             this);
2600
2601     // it is common to construct the menu passed to this function dynamically
2602     // using some fixed range of ids which could clash with the ids used
2603     // elsewhere in the program, which could result in some menu items being
2604     // unintentionally disabled or otherwise modified by update UI handlers
2605     // elsewhere in the program code and this is difficult to avoid in the
2606     // program itself, so instead we just temporarily suspend UI updating while
2607     // this menu is shown
2608     Connect(wxEVT_UPDATE_UI,
2609             wxUpdateUIEventHandler(wxWindowBase::InternalOnPopupMenuUpdate),
2610             NULL,
2611             this);
2612
2613     PopupMenu(&menu, x, y);
2614
2615     Disconnect(wxEVT_UPDATE_UI,
2616                wxUpdateUIEventHandler(wxWindowBase::InternalOnPopupMenuUpdate),
2617                NULL,
2618                this);
2619     Disconnect(wxEVT_COMMAND_MENU_SELECTED,
2620                wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2621                NULL,
2622                this);
2623
2624     return gs_popupMenuSelection;
2625 }
2626
2627 #endif // wxUSE_MENUS
2628
2629 // methods for drawing the sizers in a visible way: this is currently only
2630 // enabled for "full debug" builds with wxDEBUG_LEVEL==2 as it doesn't work
2631 // that well and also because we don't want to leave it enabled in default
2632 // builds used for production
2633 #if wxDEBUG_LEVEL > 1
2634
2635 static void DrawSizers(wxWindowBase *win);
2636
2637 static void DrawBorder(wxWindowBase *win, const wxRect& rect, bool fill, const wxPen* pen)
2638 {
2639     wxClientDC dc((wxWindow *)win);
2640     dc.SetPen(*pen);
2641     dc.SetBrush(fill ? wxBrush(pen->GetColour(), wxBRUSHSTYLE_CROSSDIAG_HATCH) :
2642                        *wxTRANSPARENT_BRUSH);
2643     dc.DrawRectangle(rect.Deflate(1, 1));
2644 }
2645
2646 static void DrawSizer(wxWindowBase *win, wxSizer *sizer)
2647 {
2648     const wxSizerItemList& items = sizer->GetChildren();
2649     for ( wxSizerItemList::const_iterator i = items.begin(),
2650                                         end = items.end();
2651           i != end;
2652           ++i )
2653     {
2654         wxSizerItem *item = *i;
2655         if ( item->IsSizer() )
2656         {
2657             DrawBorder(win, item->GetRect().Deflate(2), false, wxRED_PEN);
2658             DrawSizer(win, item->GetSizer());
2659         }
2660         else if ( item->IsSpacer() )
2661         {
2662             DrawBorder(win, item->GetRect().Deflate(2), true, wxBLUE_PEN);
2663         }
2664         else if ( item->IsWindow() )
2665         {
2666             DrawSizers(item->GetWindow());
2667         }
2668         else
2669             wxFAIL_MSG("inconsistent wxSizerItem status!");
2670     }
2671 }
2672
2673 static void DrawSizers(wxWindowBase *win)
2674 {
2675     DrawBorder(win, win->GetClientSize(), false, wxGREEN_PEN);
2676
2677     wxSizer *sizer = win->GetSizer();
2678     if ( sizer )
2679     {
2680         DrawSizer(win, sizer);
2681     }
2682     else // no sizer, still recurse into the children
2683     {
2684         const wxWindowList& children = win->GetChildren();
2685         for ( wxWindowList::const_iterator i = children.begin(),
2686                                          end = children.end();
2687               i != end;
2688               ++i )
2689         {
2690             DrawSizers(*i);
2691         }
2692
2693         // show all kind of sizes of this window; see the "window sizing" topic
2694         // overview for more info about the various differences:
2695         wxSize fullSz = win->GetSize();
2696         wxSize clientSz = win->GetClientSize();
2697         wxSize bestSz = win->GetBestSize();
2698         wxSize minSz = win->GetMinSize();
2699         wxSize maxSz = win->GetMaxSize();
2700         wxSize virtualSz = win->GetVirtualSize();
2701
2702         wxMessageOutputDebug dbgout;
2703         dbgout.Printf(
2704             "%-10s => fullsz=%4d;%-4d  clientsz=%4d;%-4d  bestsz=%4d;%-4d  minsz=%4d;%-4d  maxsz=%4d;%-4d virtualsz=%4d;%-4d\n",
2705             win->GetName(),
2706             fullSz.x, fullSz.y,
2707             clientSz.x, clientSz.y,
2708             bestSz.x, bestSz.y,
2709             minSz.x, minSz.y,
2710             maxSz.x, maxSz.y,
2711             virtualSz.x, virtualSz.y);
2712     }
2713 }
2714
2715 #endif // wxDEBUG_LEVEL
2716
2717 // process special middle clicks
2718 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
2719 {
2720     if ( event.ControlDown() && event.AltDown() )
2721     {
2722 #if wxDEBUG_LEVEL > 1
2723         // Ctrl-Alt-Shift-mclick makes the sizers visible in debug builds
2724         if ( event.ShiftDown() )
2725         {
2726             DrawSizers(this);
2727         }
2728         else
2729 #endif // __WXDEBUG__
2730         {
2731             // just Ctrl-Alt-middle click shows information about wx version
2732             ::wxInfoMessageBox((wxWindow*)this);
2733         }
2734     }
2735     else
2736     {
2737         event.Skip();
2738     }
2739 }
2740
2741 // ----------------------------------------------------------------------------
2742 // accessibility
2743 // ----------------------------------------------------------------------------
2744
2745 #if wxUSE_ACCESSIBILITY
2746 void wxWindowBase::SetAccessible(wxAccessible* accessible)
2747 {
2748     if (m_accessible && (accessible != m_accessible))
2749         delete m_accessible;
2750     m_accessible = accessible;
2751     if (m_accessible)
2752         m_accessible->SetWindow((wxWindow*) this);
2753 }
2754
2755 // Returns the accessible object, creating if necessary.
2756 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2757 {
2758     if (!m_accessible)
2759         m_accessible = CreateAccessible();
2760     return m_accessible;
2761 }
2762
2763 // Override to create a specific accessible object.
2764 wxAccessible* wxWindowBase::CreateAccessible()
2765 {
2766     return new wxWindowAccessible((wxWindow*) this);
2767 }
2768
2769 #endif
2770
2771 // ----------------------------------------------------------------------------
2772 // list classes implementation
2773 // ----------------------------------------------------------------------------
2774
2775 #if wxUSE_STL
2776
2777 #include "wx/listimpl.cpp"
2778 WX_DEFINE_LIST(wxWindowList)
2779
2780 #else // !wxUSE_STL
2781
2782 void wxWindowListNode::DeleteData()
2783 {
2784     delete (wxWindow *)GetData();
2785 }
2786
2787 #endif // wxUSE_STL/!wxUSE_STL
2788
2789 // ----------------------------------------------------------------------------
2790 // borders
2791 // ----------------------------------------------------------------------------
2792
2793 wxBorder wxWindowBase::GetBorder(long flags) const
2794 {
2795     wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2796     if ( border == wxBORDER_DEFAULT )
2797     {
2798         border = GetDefaultBorder();
2799     }
2800     else if ( border == wxBORDER_THEME )
2801     {
2802         border = GetDefaultBorderForControl();
2803     }
2804
2805     return border;
2806 }
2807
2808 wxBorder wxWindowBase::GetDefaultBorder() const
2809 {
2810     return wxBORDER_NONE;
2811 }
2812
2813 // ----------------------------------------------------------------------------
2814 // hit testing
2815 // ----------------------------------------------------------------------------
2816
2817 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2818 {
2819     // here we just check if the point is inside the window or not
2820
2821     // check the top and left border first
2822     bool outside = x < 0 || y < 0;
2823     if ( !outside )
2824     {
2825         // check the right and bottom borders too
2826         wxSize size = GetSize();
2827         outside = x >= size.x || y >= size.y;
2828     }
2829
2830     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2831 }
2832
2833 // ----------------------------------------------------------------------------
2834 // mouse capture
2835 // ----------------------------------------------------------------------------
2836
2837 struct WXDLLEXPORT wxWindowNext
2838 {
2839     wxWindow *win;
2840     wxWindowNext *next;
2841 } *wxWindowBase::ms_winCaptureNext = NULL;
2842 wxWindow *wxWindowBase::ms_winCaptureCurrent = NULL;
2843 bool wxWindowBase::ms_winCaptureChanging = false;
2844
2845 void wxWindowBase::CaptureMouse()
2846 {
2847     wxLogTrace(wxT("mousecapture"), wxT("CaptureMouse(%p)"), static_cast<void*>(this));
2848
2849     wxASSERT_MSG( !ms_winCaptureChanging, wxT("recursive CaptureMouse call?") );
2850
2851     ms_winCaptureChanging = true;
2852
2853     wxWindow *winOld = GetCapture();
2854     if ( winOld )
2855     {
2856         ((wxWindowBase*) winOld)->DoReleaseMouse();
2857
2858         // save it on stack
2859         wxWindowNext *item = new wxWindowNext;
2860         item->win = winOld;
2861         item->next = ms_winCaptureNext;
2862         ms_winCaptureNext = item;
2863     }
2864     //else: no mouse capture to save
2865
2866     DoCaptureMouse();
2867     ms_winCaptureCurrent = (wxWindow*)this;
2868
2869     ms_winCaptureChanging = false;
2870 }
2871
2872 void wxWindowBase::ReleaseMouse()
2873 {
2874     wxLogTrace(wxT("mousecapture"), wxT("ReleaseMouse(%p)"), static_cast<void*>(this));
2875
2876     wxASSERT_MSG( !ms_winCaptureChanging, wxT("recursive ReleaseMouse call?") );
2877
2878     wxASSERT_MSG( GetCapture() == this,
2879                   "attempt to release mouse, but this window hasn't captured it" );
2880     wxASSERT_MSG( ms_winCaptureCurrent == this,
2881                   "attempt to release mouse, but this window hasn't captured it" );
2882
2883     ms_winCaptureChanging = true;
2884
2885     DoReleaseMouse();
2886     ms_winCaptureCurrent = NULL;
2887
2888     if ( ms_winCaptureNext )
2889     {
2890         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2891         ms_winCaptureCurrent = ms_winCaptureNext->win;
2892
2893         wxWindowNext *item = ms_winCaptureNext;
2894         ms_winCaptureNext = item->next;
2895         delete item;
2896     }
2897     //else: stack is empty, no previous capture
2898
2899     ms_winCaptureChanging = false;
2900
2901     wxLogTrace(wxT("mousecapture"),
2902         (const wxChar *) wxT("After ReleaseMouse() mouse is captured by %p"),
2903         static_cast<void*>(GetCapture()));
2904 }
2905
2906 static void DoNotifyWindowAboutCaptureLost(wxWindow *win)
2907 {
2908     wxMouseCaptureLostEvent event(win->GetId());
2909     event.SetEventObject(win);
2910     if ( !win->GetEventHandler()->ProcessEvent(event) )
2911     {
2912         // windows must handle this event, otherwise the app wouldn't behave
2913         // correctly if it loses capture unexpectedly; see the discussion here:
2914         // http://sourceforge.net/tracker/index.php?func=detail&aid=1153662&group_id=9863&atid=109863
2915         // http://article.gmane.org/gmane.comp.lib.wxwidgets.devel/82376
2916         wxFAIL_MSG( wxT("window that captured the mouse didn't process wxEVT_MOUSE_CAPTURE_LOST") );
2917     }
2918 }
2919
2920 /* static */
2921 void wxWindowBase::NotifyCaptureLost()
2922 {
2923     // don't do anything if capture lost was expected, i.e. resulted from
2924     // a wx call to ReleaseMouse or CaptureMouse:
2925     if ( ms_winCaptureChanging )
2926         return;
2927
2928     // if the capture was lost unexpectedly, notify every window that has
2929     // capture (on stack or current) about it and clear the stack:
2930
2931     if ( ms_winCaptureCurrent )
2932     {
2933         DoNotifyWindowAboutCaptureLost(ms_winCaptureCurrent);
2934         ms_winCaptureCurrent = NULL;
2935     }
2936
2937     while ( ms_winCaptureNext )
2938     {
2939         wxWindowNext *item = ms_winCaptureNext;
2940         ms_winCaptureNext = item->next;
2941
2942         DoNotifyWindowAboutCaptureLost(item->win);
2943
2944         delete item;
2945     }
2946 }
2947
2948 #if wxUSE_HOTKEY
2949
2950 bool
2951 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2952                              int WXUNUSED(modifiers),
2953                              int WXUNUSED(keycode))
2954 {
2955     // not implemented
2956     return false;
2957 }
2958
2959 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2960 {
2961     // not implemented
2962     return false;
2963 }
2964
2965 #endif // wxUSE_HOTKEY
2966
2967 // ----------------------------------------------------------------------------
2968 // event processing
2969 // ----------------------------------------------------------------------------
2970
2971 bool wxWindowBase::TryBefore(wxEvent& event)
2972 {
2973 #if wxUSE_VALIDATORS
2974     // Can only use the validator of the window which
2975     // is receiving the event
2976     if ( event.GetEventObject() == this )
2977     {
2978         wxValidator * const validator = GetValidator();
2979         if ( validator && validator->ProcessEventLocally(event) )
2980         {
2981             return true;
2982         }
2983     }
2984 #endif // wxUSE_VALIDATORS
2985
2986     return wxEvtHandler::TryBefore(event);
2987 }
2988
2989 bool wxWindowBase::TryAfter(wxEvent& event)
2990 {
2991     // carry on up the parent-child hierarchy if the propagation count hasn't
2992     // reached zero yet
2993     if ( event.ShouldPropagate() )
2994     {
2995         // honour the requests to stop propagation at this window: this is
2996         // used by the dialogs, for example, to prevent processing the events
2997         // from the dialog controls in the parent frame which rarely, if ever,
2998         // makes sense
2999         if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
3000         {
3001             wxWindow *parent = GetParent();
3002             if ( parent && !parent->IsBeingDeleted() )
3003             {
3004                 wxPropagateOnce propagateOnce(event);
3005
3006                 return parent->GetEventHandler()->ProcessEvent(event);
3007             }
3008         }
3009     }
3010
3011     return wxEvtHandler::TryAfter(event);
3012 }
3013
3014 // ----------------------------------------------------------------------------
3015 // window relationships
3016 // ----------------------------------------------------------------------------
3017
3018 wxWindow *wxWindowBase::DoGetSibling(WindowOrder order) const
3019 {
3020     wxCHECK_MSG( GetParent(), NULL,
3021                     wxT("GetPrev/NextSibling() don't work for TLWs!") );
3022
3023     wxWindowList& siblings = GetParent()->GetChildren();
3024     wxWindowList::compatibility_iterator i = siblings.Find((wxWindow *)this);
3025     wxCHECK_MSG( i, NULL, wxT("window not a child of its parent?") );
3026
3027     if ( order == OrderBefore )
3028         i = i->GetPrevious();
3029     else // OrderAfter
3030         i = i->GetNext();
3031
3032     return i ? i->GetData() : NULL;
3033 }
3034
3035 // ----------------------------------------------------------------------------
3036 // keyboard navigation
3037 // ----------------------------------------------------------------------------
3038
3039 // Navigates in the specified direction inside this window
3040 bool wxWindowBase::DoNavigateIn(int flags)
3041 {
3042 #ifdef wxHAS_NATIVE_TAB_TRAVERSAL
3043     // native code doesn't process our wxNavigationKeyEvents anyhow
3044     wxUnusedVar(flags);
3045     return false;
3046 #else // !wxHAS_NATIVE_TAB_TRAVERSAL
3047     wxNavigationKeyEvent eventNav;
3048     wxWindow *focused = FindFocus();
3049     eventNav.SetCurrentFocus(focused);
3050     eventNav.SetEventObject(focused);
3051     eventNav.SetFlags(flags);
3052     return GetEventHandler()->ProcessEvent(eventNav);
3053 #endif // wxHAS_NATIVE_TAB_TRAVERSAL/!wxHAS_NATIVE_TAB_TRAVERSAL
3054 }
3055
3056 bool wxWindowBase::HandleAsNavigationKey(const wxKeyEvent& event)
3057 {
3058     if ( event.GetKeyCode() != WXK_TAB )
3059         return false;
3060
3061     int flags = wxNavigationKeyEvent::FromTab;
3062
3063     if ( event.ShiftDown() )
3064         flags |= wxNavigationKeyEvent::IsBackward;
3065     else
3066         flags |= wxNavigationKeyEvent::IsForward;
3067
3068     if ( event.ControlDown() )
3069         flags |= wxNavigationKeyEvent::WinChange;
3070
3071     Navigate(flags);
3072     return true;
3073 }
3074
3075 void wxWindowBase::DoMoveInTabOrder(wxWindow *win, WindowOrder move)
3076 {
3077     // check that we're not a top level window
3078     wxCHECK_RET( GetParent(),
3079                     wxT("MoveBefore/AfterInTabOrder() don't work for TLWs!") );
3080
3081     // detect the special case when we have nothing to do anyhow and when the
3082     // code below wouldn't work
3083     if ( win == this )
3084         return;
3085
3086     // find the target window in the siblings list
3087     wxWindowList& siblings = GetParent()->GetChildren();
3088     wxWindowList::compatibility_iterator i = siblings.Find(win);
3089     wxCHECK_RET( i, wxT("MoveBefore/AfterInTabOrder(): win is not a sibling") );
3090
3091     // unfortunately, when wxUSE_STL == 1 DetachNode() is not implemented so we
3092     // can't just move the node around
3093     wxWindow *self = (wxWindow *)this;
3094     siblings.DeleteObject(self);
3095     if ( move == OrderAfter )
3096     {
3097         i = i->GetNext();
3098     }
3099
3100     if ( i )
3101     {
3102         siblings.Insert(i, self);
3103     }
3104     else // OrderAfter and win was the last sibling
3105     {
3106         siblings.Append(self);
3107     }
3108 }
3109
3110 // ----------------------------------------------------------------------------
3111 // focus handling
3112 // ----------------------------------------------------------------------------
3113
3114 /*static*/ wxWindow* wxWindowBase::FindFocus()
3115 {
3116     wxWindowBase *win = DoFindFocus();
3117     return win ? win->GetMainWindowOfCompositeControl() : NULL;
3118 }
3119
3120 bool wxWindowBase::HasFocus() const
3121 {
3122     wxWindowBase *win = DoFindFocus();
3123     return win == this ||
3124            win == wxConstCast(this, wxWindowBase)->GetMainWindowOfCompositeControl();
3125 }
3126
3127 // ----------------------------------------------------------------------------
3128 // drag and drop
3129 // ----------------------------------------------------------------------------
3130
3131 #if wxUSE_DRAG_AND_DROP && !defined(__WXMSW__)
3132
3133 namespace
3134 {
3135
3136 class DragAcceptFilesTarget : public wxFileDropTarget
3137 {
3138 public:
3139     DragAcceptFilesTarget(wxWindowBase *win) : m_win(win) {}
3140
3141     virtual bool OnDropFiles(wxCoord x, wxCoord y,
3142                              const wxArrayString& filenames)
3143     {
3144         wxDropFilesEvent event(wxEVT_DROP_FILES,
3145                                filenames.size(),
3146                                wxCArrayString(filenames).Release());
3147         event.SetEventObject(m_win);
3148         event.m_pos.x = x;
3149         event.m_pos.y = y;
3150
3151         return m_win->HandleWindowEvent(event);
3152     }
3153
3154 private:
3155     wxWindowBase * const m_win;
3156
3157     wxDECLARE_NO_COPY_CLASS(DragAcceptFilesTarget);
3158 };
3159
3160
3161 } // anonymous namespace
3162
3163 // Generic version of DragAcceptFiles(). It works by installing a simple
3164 // wxFileDropTarget-to-EVT_DROP_FILES adaptor and therefore cannot be used
3165 // together with explicit SetDropTarget() calls.
3166 void wxWindowBase::DragAcceptFiles(bool accept)
3167 {
3168     if ( accept )
3169     {
3170         wxASSERT_MSG( !GetDropTarget(),
3171                       "cannot use DragAcceptFiles() and SetDropTarget() together" );
3172         SetDropTarget(new DragAcceptFilesTarget(this));
3173     }
3174     else
3175     {
3176         SetDropTarget(NULL);
3177     }
3178 }
3179
3180 #endif // wxUSE_DRAG_AND_DROP && !defined(__WXMSW__)
3181
3182 // ----------------------------------------------------------------------------
3183 // global functions
3184 // ----------------------------------------------------------------------------
3185
3186 wxWindow* wxGetTopLevelParent(wxWindow *win)
3187 {
3188     while ( win && !win->IsTopLevel() )
3189          win = win->GetParent();
3190
3191     return win;
3192 }
3193
3194 #if wxUSE_ACCESSIBILITY
3195 // ----------------------------------------------------------------------------
3196 // accessible object for windows
3197 // ----------------------------------------------------------------------------
3198
3199 // Can return either a child object, or an integer
3200 // representing the child element, starting from 1.
3201 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
3202 {
3203     wxASSERT( GetWindow() != NULL );
3204     if (!GetWindow())
3205         return wxACC_FAIL;
3206
3207     return wxACC_NOT_IMPLEMENTED;
3208 }
3209
3210 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
3211 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
3212 {
3213     wxASSERT( GetWindow() != NULL );
3214     if (!GetWindow())
3215         return wxACC_FAIL;
3216
3217     wxWindow* win = NULL;
3218     if (elementId == 0)
3219     {
3220         win = GetWindow();
3221     }
3222     else
3223     {
3224         if (elementId <= (int) GetWindow()->GetChildren().GetCount())
3225         {
3226             win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
3227         }
3228         else
3229             return wxACC_FAIL;
3230     }
3231     if (win)
3232     {
3233         rect = win->GetRect();
3234         if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
3235             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
3236         return wxACC_OK;
3237     }
3238
3239     return wxACC_NOT_IMPLEMENTED;
3240 }
3241
3242 // Navigates from fromId to toId/toObject.
3243 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
3244                              int* WXUNUSED(toId), wxAccessible** toObject)
3245 {
3246     wxASSERT( GetWindow() != NULL );
3247     if (!GetWindow())
3248         return wxACC_FAIL;
3249
3250     switch (navDir)
3251     {
3252     case wxNAVDIR_FIRSTCHILD:
3253         {
3254             if (GetWindow()->GetChildren().GetCount() == 0)
3255                 return wxACC_FALSE;
3256             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
3257             *toObject = childWindow->GetOrCreateAccessible();
3258
3259             return wxACC_OK;
3260         }
3261     case wxNAVDIR_LASTCHILD:
3262         {
3263             if (GetWindow()->GetChildren().GetCount() == 0)
3264                 return wxACC_FALSE;
3265             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
3266             *toObject = childWindow->GetOrCreateAccessible();
3267
3268             return wxACC_OK;
3269         }
3270     case wxNAVDIR_RIGHT:
3271     case wxNAVDIR_DOWN:
3272     case wxNAVDIR_NEXT:
3273         {
3274             wxWindowList::compatibility_iterator node =
3275                 wxWindowList::compatibility_iterator();
3276             if (fromId == 0)
3277             {
3278                 // Can't navigate to sibling of this window
3279                 // if we're a top-level window.
3280                 if (!GetWindow()->GetParent())
3281                     return wxACC_NOT_IMPLEMENTED;
3282
3283                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
3284             }
3285             else
3286             {
3287                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
3288                     node = GetWindow()->GetChildren().Item(fromId-1);
3289             }
3290
3291             if (node && node->GetNext())
3292             {
3293                 wxWindow* nextWindow = node->GetNext()->GetData();
3294                 *toObject = nextWindow->GetOrCreateAccessible();
3295                 return wxACC_OK;
3296             }
3297             else
3298                 return wxACC_FALSE;
3299         }
3300     case wxNAVDIR_LEFT:
3301     case wxNAVDIR_UP:
3302     case wxNAVDIR_PREVIOUS:
3303         {
3304             wxWindowList::compatibility_iterator node =
3305                 wxWindowList::compatibility_iterator();
3306             if (fromId == 0)
3307             {
3308                 // Can't navigate to sibling of this window
3309                 // if we're a top-level window.
3310                 if (!GetWindow()->GetParent())
3311                     return wxACC_NOT_IMPLEMENTED;
3312
3313                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
3314             }
3315             else
3316             {
3317                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
3318                     node = GetWindow()->GetChildren().Item(fromId-1);
3319             }
3320
3321             if (node && node->GetPrevious())
3322             {
3323                 wxWindow* previousWindow = node->GetPrevious()->GetData();
3324                 *toObject = previousWindow->GetOrCreateAccessible();
3325                 return wxACC_OK;
3326             }
3327             else
3328                 return wxACC_FALSE;
3329         }
3330     }
3331
3332     return wxACC_NOT_IMPLEMENTED;
3333 }
3334
3335 // Gets the name of the specified object.
3336 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
3337 {
3338     wxASSERT( GetWindow() != NULL );
3339     if (!GetWindow())
3340         return wxACC_FAIL;
3341
3342     wxString title;
3343
3344     // If a child, leave wxWidgets to call the function on the actual
3345     // child object.
3346     if (childId > 0)
3347         return wxACC_NOT_IMPLEMENTED;
3348
3349     // This will eventually be replaced by specialised
3350     // accessible classes, one for each kind of wxWidgets
3351     // control or window.
3352 #if wxUSE_BUTTON
3353     if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
3354         title = ((wxButton*) GetWindow())->GetLabel();
3355     else
3356 #endif
3357         title = GetWindow()->GetName();
3358
3359     if (!title.empty())
3360     {
3361         *name = title;
3362         return wxACC_OK;
3363     }
3364     else
3365         return wxACC_NOT_IMPLEMENTED;
3366 }
3367
3368 // Gets the number of children.
3369 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
3370 {
3371     wxASSERT( GetWindow() != NULL );
3372     if (!GetWindow())
3373         return wxACC_FAIL;
3374
3375     *childId = (int) GetWindow()->GetChildren().GetCount();
3376     return wxACC_OK;
3377 }
3378
3379 // Gets the specified child (starting from 1).
3380 // If *child is NULL and return value is wxACC_OK,
3381 // this means that the child is a simple element and
3382 // not an accessible object.
3383 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
3384 {
3385     wxASSERT( GetWindow() != NULL );
3386     if (!GetWindow())
3387         return wxACC_FAIL;
3388
3389     if (childId == 0)
3390     {
3391         *child = this;
3392         return wxACC_OK;
3393     }
3394
3395     if (childId > (int) GetWindow()->GetChildren().GetCount())
3396         return wxACC_FAIL;
3397
3398     wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
3399     *child = childWindow->GetOrCreateAccessible();
3400     if (*child)
3401         return wxACC_OK;
3402     else
3403         return wxACC_FAIL;
3404 }
3405
3406 // Gets the parent, or NULL.
3407 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
3408 {
3409     wxASSERT( GetWindow() != NULL );
3410     if (!GetWindow())
3411         return wxACC_FAIL;
3412
3413     wxWindow* parentWindow = GetWindow()->GetParent();
3414     if (!parentWindow)
3415     {
3416         *parent = NULL;
3417         return wxACC_OK;
3418     }
3419     else
3420     {
3421         *parent = parentWindow->GetOrCreateAccessible();
3422         if (*parent)
3423             return wxACC_OK;
3424         else
3425             return wxACC_FAIL;
3426     }
3427 }
3428
3429 // Performs the default action. childId is 0 (the action for this object)
3430 // or > 0 (the action for a child).
3431 // Return wxACC_NOT_SUPPORTED if there is no default action for this
3432 // window (e.g. an edit control).
3433 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
3434 {
3435     wxASSERT( GetWindow() != NULL );
3436     if (!GetWindow())
3437         return wxACC_FAIL;
3438
3439     return wxACC_NOT_IMPLEMENTED;
3440 }
3441
3442 // Gets the default action for this object (0) or > 0 (the action for a child).
3443 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
3444 // string if there is no action.
3445 // The retrieved string describes the action that is performed on an object,
3446 // not what the object does as a result. For example, a toolbar button that prints
3447 // a document has a default action of "Press" rather than "Prints the current document."
3448 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
3449 {
3450     wxASSERT( GetWindow() != NULL );
3451     if (!GetWindow())
3452         return wxACC_FAIL;
3453
3454     return wxACC_NOT_IMPLEMENTED;
3455 }
3456
3457 // Returns the description for this object or a child.
3458 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
3459 {
3460     wxASSERT( GetWindow() != NULL );
3461     if (!GetWindow())
3462         return wxACC_FAIL;
3463
3464     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3465     if (!ht.empty())
3466     {
3467         *description = ht;
3468         return wxACC_OK;
3469     }
3470     return wxACC_NOT_IMPLEMENTED;
3471 }
3472
3473 // Returns help text for this object or a child, similar to tooltip text.
3474 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
3475 {
3476     wxASSERT( GetWindow() != NULL );
3477     if (!GetWindow())
3478         return wxACC_FAIL;
3479
3480     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3481     if (!ht.empty())
3482     {
3483         *helpText = ht;
3484         return wxACC_OK;
3485     }
3486     return wxACC_NOT_IMPLEMENTED;
3487 }
3488
3489 // Returns the keyboard shortcut for this object or child.
3490 // Return e.g. ALT+K
3491 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
3492 {
3493     wxASSERT( GetWindow() != NULL );
3494     if (!GetWindow())
3495         return wxACC_FAIL;
3496
3497     return wxACC_NOT_IMPLEMENTED;
3498 }
3499
3500 // Returns a role constant.
3501 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
3502 {
3503     wxASSERT( GetWindow() != NULL );
3504     if (!GetWindow())
3505         return wxACC_FAIL;
3506
3507     // If a child, leave wxWidgets to call the function on the actual
3508     // child object.
3509     if (childId > 0)
3510         return wxACC_NOT_IMPLEMENTED;
3511
3512     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3513         return wxACC_NOT_IMPLEMENTED;
3514 #if wxUSE_STATUSBAR
3515     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3516         return wxACC_NOT_IMPLEMENTED;
3517 #endif
3518 #if wxUSE_TOOLBAR
3519     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3520         return wxACC_NOT_IMPLEMENTED;
3521 #endif
3522
3523     //*role = wxROLE_SYSTEM_CLIENT;
3524     *role = wxROLE_SYSTEM_CLIENT;
3525     return wxACC_OK;
3526
3527     #if 0
3528     return wxACC_NOT_IMPLEMENTED;
3529     #endif
3530 }
3531
3532 // Returns a state constant.
3533 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
3534 {
3535     wxASSERT( GetWindow() != NULL );
3536     if (!GetWindow())
3537         return wxACC_FAIL;
3538
3539     // If a child, leave wxWidgets to call the function on the actual
3540     // child object.
3541     if (childId > 0)
3542         return wxACC_NOT_IMPLEMENTED;
3543
3544     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3545         return wxACC_NOT_IMPLEMENTED;
3546
3547 #if wxUSE_STATUSBAR
3548     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3549         return wxACC_NOT_IMPLEMENTED;
3550 #endif
3551 #if wxUSE_TOOLBAR
3552     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3553         return wxACC_NOT_IMPLEMENTED;
3554 #endif
3555
3556     *state = 0;
3557     return wxACC_OK;
3558
3559     #if 0
3560     return wxACC_NOT_IMPLEMENTED;
3561     #endif
3562 }
3563
3564 // Returns a localized string representing the value for the object
3565 // or child.
3566 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
3567 {
3568     wxASSERT( GetWindow() != NULL );
3569     if (!GetWindow())
3570         return wxACC_FAIL;
3571
3572     return wxACC_NOT_IMPLEMENTED;
3573 }
3574
3575 // Selects the object or child.
3576 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
3577 {
3578     wxASSERT( GetWindow() != NULL );
3579     if (!GetWindow())
3580         return wxACC_FAIL;
3581
3582     return wxACC_NOT_IMPLEMENTED;
3583 }
3584
3585 // Gets the window with the keyboard focus.
3586 // If childId is 0 and child is NULL, no object in
3587 // this subhierarchy has the focus.
3588 // If this object has the focus, child should be 'this'.
3589 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
3590 {
3591     wxASSERT( GetWindow() != NULL );
3592     if (!GetWindow())
3593         return wxACC_FAIL;
3594
3595     return wxACC_NOT_IMPLEMENTED;
3596 }
3597
3598 #if wxUSE_VARIANT
3599 // Gets a variant representing the selected children
3600 // of this object.
3601 // Acceptable values:
3602 // - a null variant (IsNull() returns true)
3603 // - a list variant (GetType() == wxT("list")
3604 // - an integer representing the selected child element,
3605 //   or 0 if this object is selected (GetType() == wxT("long")
3606 // - a "void*" pointer to a wxAccessible child object
3607 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
3608 {
3609     wxASSERT( GetWindow() != NULL );
3610     if (!GetWindow())
3611         return wxACC_FAIL;
3612
3613     return wxACC_NOT_IMPLEMENTED;
3614 }
3615 #endif // wxUSE_VARIANT
3616
3617 #endif // wxUSE_ACCESSIBILITY
3618
3619 // ----------------------------------------------------------------------------
3620 // RTL support
3621 // ----------------------------------------------------------------------------
3622
3623 wxCoord
3624 wxWindowBase::AdjustForLayoutDirection(wxCoord x,
3625                                        wxCoord width,
3626                                        wxCoord widthTotal) const
3627 {
3628     if ( GetLayoutDirection() == wxLayout_RightToLeft )
3629     {
3630         x = widthTotal - x - width;
3631     }
3632
3633     return x;
3634 }
3635
3636