src/common/wincmn.cpp

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