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/statusbr.h"
  42     #include "wx/toolbar.h"
  43     #include "wx/dcclient.h"
  44     #include "wx/scrolbar.h"
  45     #include "wx/layout.h"
  46     #include "wx/sizer.h"
  47     #include "wx/menu.h"
  48 #endif //WX_PRECOMP
  49
  50 #if wxUSE_DRAG_AND_DROP
  51     #include "wx/dnd.h"
  52 #endif // wxUSE_DRAG_AND_DROP
  53
  54 #if wxUSE_ACCESSIBILITY
  55     #include "wx/access.h"
  56 #endif
  57
  58 #if wxUSE_HELP
  59     #include "wx/cshelp.h"
  60 #endif // wxUSE_HELP
  61
  62 #if wxUSE_TOOLTIPS
  63     #include "wx/tooltip.h"
  64 #endif // wxUSE_TOOLTIPS
  65
  66 #if wxUSE_CARET
  67     #include "wx/caret.h"
  68 #endif // wxUSE_CARET
  69
  70 #if wxUSE_SYSTEM_OPTIONS
  71     #include "wx/sysopt.h"
  72 #endif
  73
  74 // For reporting compile- and runtime version of GTK+ in the ctrl+alt+mclick dialog.
  75 // The gtk includes don't pull any other headers in, at least not on my system - MR
  76 #ifdef __WXGTK__
  77     #ifdef __WXGTK20__
  78         #include <gtk/gtkversion.h>
  79     #else
  80         #include <gtk/gtkfeatures.h>
  81     #endif
  82 #endif
  83
  84 #include "wx/platinfo.h"
  85
  86 // Windows List
  87 WXDLLIMPEXP_DATA_CORE(wxWindowList) wxTopLevelWindows;
  88
  89 // globals
  90 #if wxUSE_MENUS
  91 wxMenu *wxCurrentPopupMenu = NULL;
  92 #endif // wxUSE_MENUS
  93
  94 // ----------------------------------------------------------------------------
  95 // static data
  96 // ----------------------------------------------------------------------------
  97
  98
  99 IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
 100
 101 // ----------------------------------------------------------------------------
 102 // event table
 103 // ----------------------------------------------------------------------------
 104
 105 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
 106     EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
 107     EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
 108     EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
 109
 110 #if wxUSE_HELP
 111     EVT_HELP(wxID_ANY, wxWindowBase::OnHelp)
 112 #endif // wxUSE_HELP
 113
 114 END_EVENT_TABLE()
 115
 116 // ============================================================================
 117 // implementation of the common functionality of the wxWindow class
 118 // ============================================================================
 119
 120 // ----------------------------------------------------------------------------
 121 // initialization
 122 // ----------------------------------------------------------------------------
 123
 124 // the default initialization
 125 wxWindowBase::wxWindowBase()
 126 {
 127     // no window yet, no parent nor children
 128     m_parent = (wxWindow *)NULL;
 129     m_windowId = wxID_ANY;
 130
 131     // no constraints on the minimal window size
 132     m_minWidth =
 133     m_maxWidth = wxDefaultCoord;
 134     m_minHeight =
 135     m_maxHeight = wxDefaultCoord;
 136
 137     // invalidiated cache value
 138     m_bestSizeCache = wxDefaultSize;
 139
 140     // window are created enabled and visible by default
 141     m_isShown =
 142     m_isEnabled = true;
 143
 144     // the default event handler is just this window
 145     m_eventHandler = this;
 146
 147 #if wxUSE_VALIDATORS
 148     // no validator
 149     m_windowValidator = (wxValidator *) NULL;
 150 #endif // wxUSE_VALIDATORS
 151
 152     // the colours/fonts are default for now, so leave m_font,
 153     // m_backgroundColour and m_foregroundColour uninitialized and set those
 154     m_hasBgCol =
 155     m_hasFgCol =
 156     m_hasFont = false;
 157     m_inheritBgCol =
 158     m_inheritFgCol =
 159     m_inheritFont = false;
 160
 161     // no style bits
 162     m_exStyle =
 163     m_windowStyle = 0;
 164
 165     m_backgroundStyle = wxBG_STYLE_SYSTEM;
 166
 167 #if wxUSE_CONSTRAINTS
 168     // no constraints whatsoever
 169     m_constraints = (wxLayoutConstraints *) NULL;
 170     m_constraintsInvolvedIn = (wxWindowList *) NULL;
 171 #endif // wxUSE_CONSTRAINTS
 172
 173     m_windowSizer = (wxSizer *) NULL;
 174     m_containingSizer = (wxSizer *) NULL;
 175     m_autoLayout = false;
 176
 177 #if wxUSE_DRAG_AND_DROP
 178     m_dropTarget = (wxDropTarget *)NULL;
 179 #endif // wxUSE_DRAG_AND_DROP
 180
 181 #if wxUSE_TOOLTIPS
 182     m_tooltip = (wxToolTip *)NULL;
 183 #endif // wxUSE_TOOLTIPS
 184
 185 #if wxUSE_CARET
 186     m_caret = (wxCaret *)NULL;
 187 #endif // wxUSE_CARET
 188
 189 #if wxUSE_PALETTE
 190     m_hasCustomPalette = false;
 191 #endif // wxUSE_PALETTE
 192
 193 #if wxUSE_ACCESSIBILITY
 194     m_accessible = NULL;
 195 #endif
 196
 197     m_virtualSize = wxDefaultSize;
 198
 199     m_scrollHelper = (wxScrollHelper *) NULL;
 200
 201     m_windowVariant = wxWINDOW_VARIANT_NORMAL;
 202 #if wxUSE_SYSTEM_OPTIONS
 203     if ( wxSystemOptions::HasOption(wxWINDOW_DEFAULT_VARIANT) )
 204     {
 205        m_windowVariant = (wxWindowVariant) wxSystemOptions::GetOptionInt( wxWINDOW_DEFAULT_VARIANT ) ;
 206     }
 207 #endif
 208
 209     // Whether we're using the current theme for this window (wxGTK only for now)
 210     m_themeEnabled = false;
 211
 212     // VZ: this one shouldn't exist...
 213     m_isBeingDeleted = false;
 214
 215     m_freezeCount = 0;
 216 }
 217
 218 // common part of window creation process
 219 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 220                               wxWindowID id,
 221                               const wxPoint& WXUNUSED(pos),
 222                               const wxSize& WXUNUSED(size),
 223                               long style,
 224                               const wxValidator& wxVALIDATOR_PARAM(validator),
 225                               const wxString& name)
 226 {
 227 #if wxUSE_STATBOX
 228     // wxGTK doesn't allow to create controls with static box as the parent so
 229     // this will result in a crash when the program is ported to wxGTK so warn
 230     // the user about it
 231
 232     // if you get this assert, the correct solution is to create the controls
 233     // as siblings of the static box
 234     wxASSERT_MSG( !parent || !wxDynamicCast(parent, wxStaticBox),
 235                   _T("wxStaticBox can't be used as a window parent!") );
 236 #endif // wxUSE_STATBOX
 237
 238     // ids are limited to 16 bits under MSW so if you care about portability,
 239     // it's not a good idea to use ids out of this range (and negative ids are
 240     // reserved for wxWidgets own usage)
 241     wxASSERT_MSG( id == wxID_ANY || (id >= 0 && id < 32767) ||
 242                   (id >= wxID_AUTO_LOWEST && id <= wxID_AUTO_HIGHEST),
 243                   _T("invalid id value") );
 244
 245     // generate a new id if the user doesn't care about it
 246     if ( id == wxID_ANY )
 247     {
 248         m_windowId = NewControlId();
 249     }
 250     else // valid id specified
 251     {
 252         m_windowId = id;
 253     }
 254
 255     // don't use SetWindowStyleFlag() here, this function should only be called
 256     // to change the flag after creation as it tries to reflect the changes in
 257     // flags by updating the window dynamically and we don't need this here
 258     m_windowStyle = style;
 259
 260     SetName(name);
 261     SetParent(parent);
 262
 263 #if wxUSE_VALIDATORS
 264     SetValidator(validator);
 265 #endif // wxUSE_VALIDATORS
 266
 267     // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
 268     // have it too - like this it's possible to set it only in the top level
 269     // dialog/frame and all children will inherit it by defult
 270     if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
 271     {
 272         SetExtraStyle(GetExtraStyle() | wxWS_EX_VALIDATE_RECURSIVELY);
 273     }
 274
 275     return true;
 276 }
 277
 278 bool wxWindowBase::ToggleWindowStyle(int flag)
 279 {
 280     wxASSERT_MSG( flag, _T("flags with 0 value can't be toggled") );
 281
 282     bool rc;
 283     long style = GetWindowStyleFlag();
 284     if ( style & flag )
 285     {
 286         style &= ~flag;
 287         rc = false;
 288     }
 289     else // currently off
 290     {
 291         style |= flag;
 292         rc = true;
 293     }
 294
 295     SetWindowStyleFlag(style);
 296
 297     return rc;
 298 }
 299
 300 // ----------------------------------------------------------------------------
 301 // destruction
 302 // ----------------------------------------------------------------------------
 303
 304 // common clean up
 305 wxWindowBase::~wxWindowBase()
 306 {
 307     wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
 308
 309     // FIXME if these 2 cases result from programming errors in the user code
 310     //       we should probably assert here instead of silently fixing them
 311
 312     // Just in case the window has been Closed, but we're then deleting
 313     // immediately: don't leave dangling pointers.
 314     wxPendingDelete.DeleteObject(this);
 315
 316     // Just in case we've loaded a top-level window via LoadNativeDialog but
 317     // we weren't a dialog class
 318     wxTopLevelWindows.DeleteObject((wxWindow*)this);
 319
 320 #if wxUSE_MENUS
 321     // The associated popup menu can still be alive, disassociate from it in
 322     // this case
 323     if ( wxCurrentPopupMenu && wxCurrentPopupMenu->GetInvokingWindow() == this )
 324         wxCurrentPopupMenu->SetInvokingWindow(NULL);
 325 #endif // wxUSE_MENUS
 326
 327     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 328
 329     // notify the parent about this window destruction
 330     if ( m_parent )
 331         m_parent->RemoveChild(this);
 332
 333 #if wxUSE_CARET
 334     delete m_caret;
 335 #endif // wxUSE_CARET
 336
 337 #if wxUSE_VALIDATORS
 338     delete m_windowValidator;
 339 #endif // wxUSE_VALIDATORS
 340
 341 #if wxUSE_CONSTRAINTS
 342     // Have to delete constraints/sizer FIRST otherwise sizers may try to look
 343     // at deleted windows as they delete themselves.
 344     DeleteRelatedConstraints();
 345
 346     if ( m_constraints )
 347     {
 348         // This removes any dangling pointers to this window in other windows'
 349         // constraintsInvolvedIn lists.
 350         UnsetConstraints(m_constraints);
 351         delete m_constraints;
 352         m_constraints = NULL;
 353     }
 354 #endif // wxUSE_CONSTRAINTS
 355
 356     if ( m_containingSizer )
 357         m_containingSizer->Detach( (wxWindow*)this );
 358
 359     delete m_windowSizer;
 360
 361 #if wxUSE_DRAG_AND_DROP
 362     delete m_dropTarget;
 363 #endif // wxUSE_DRAG_AND_DROP
 364
 365 #if wxUSE_TOOLTIPS
 366     delete m_tooltip;
 367 #endif // wxUSE_TOOLTIPS
 368
 369 #if wxUSE_ACCESSIBILITY
 370     delete m_accessible;
 371 #endif
 372
 373 #if wxUSE_HELP
 374     // NB: this has to be called unconditionally, because we don't know
 375     //     whether this window has associated help text or not
 376     wxHelpProvider *helpProvider = wxHelpProvider::Get();
 377     if ( helpProvider )
 378         helpProvider->RemoveHelp(this);
 379 #endif
 380 }
 381
 382 void wxWindowBase::SendDestroyEvent()
 383 {
 384     wxWindowDestroyEvent event;
 385     event.SetEventObject(this);
 386     event.SetId(GetId());
 387     GetEventHandler()->ProcessEvent(event);
 388 }
 389
 390 bool wxWindowBase::Destroy()
 391 {
 392     delete this;
 393
 394     return true;
 395 }
 396
 397 bool wxWindowBase::Close(bool force)
 398 {
 399     wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
 400     event.SetEventObject(this);
 401     event.SetCanVeto(!force);
 402
 403     // return false if window wasn't closed because the application vetoed the
 404     // close event
 405     return HandleWindowEvent(event) && !event.GetVeto();
 406 }
 407
 408 bool wxWindowBase::DestroyChildren()
 409 {
 410     wxWindowList::compatibility_iterator node;
 411     for ( ;; )
 412     {
 413         // we iterate until the list becomes empty
 414         node = GetChildren().GetFirst();
 415         if ( !node )
 416             break;
 417
 418         wxWindow *child = node->GetData();
 419
 420         // note that we really want to call delete and not ->Destroy() here
 421         // because we want to delete the child immediately, before we are
 422         // deleted, and delayed deletion would result in problems as our (top
 423         // level) child could outlive its parent
 424         delete child;
 425
 426         wxASSERT_MSG( !GetChildren().Find(child),
 427                       wxT("child didn't remove itself using RemoveChild()") );
 428     }
 429
 430     return true;
 431 }
 432
 433 // ----------------------------------------------------------------------------
 434 // size/position related methods
 435 // ----------------------------------------------------------------------------
 436
 437 // centre the window with respect to its parent in either (or both) directions
 438 void wxWindowBase::DoCentre(int dir)
 439 {
 440     wxCHECK_RET( !(dir & wxCENTRE_ON_SCREEN) && GetParent(),
 441                  _T("this method only implements centering child windows") );
 442
 443     SetSize(GetRect().CentreIn(GetParent()->GetClientSize(), dir));
 444 }
 445
 446 // fits the window around the children
 447 void wxWindowBase::Fit()
 448 {
 449     if ( !GetChildren().empty() )
 450     {
 451         SetSize(GetBestSize());
 452     }
 453     //else: do nothing if we have no children
 454 }
 455
 456 // fits virtual size (ie. scrolled area etc.) around children
 457 void wxWindowBase::FitInside()
 458 {
 459     if ( GetChildren().GetCount() > 0 )
 460     {
 461         SetVirtualSize( GetBestVirtualSize() );
 462     }
 463 }
 464
 465 // On Mac, scrollbars are explicitly children.
 466 #ifdef __WXMAC__
 467 static bool wxHasRealChildren(const wxWindowBase* win)
 468 {
 469     int realChildCount = 0;
 470
 471     for ( wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
 472           node;
 473           node = node->GetNext() )
 474     {
 475         wxWindow *win = node->GetData();
 476         if ( !win->IsTopLevel() && win->IsShown() && !win->IsKindOf(CLASSINFO(wxScrollBar)))
 477             realChildCount ++;
 478     }
 479     return (realChildCount > 0);
 480 }
 481 #endif
 482
 483 void wxWindowBase::InvalidateBestSize()
 484 {
 485     m_bestSizeCache = wxDefaultSize;
 486
 487     // parent's best size calculation may depend on its children's
 488     // as long as child window we are in is not top level window itself
 489     // (because the TLW size is never resized automatically)
 490     // so let's invalidate it as well to be safe:
 491     if (m_parent && !IsTopLevel())
 492         m_parent->InvalidateBestSize();
 493 }
 494
 495 // return the size best suited for the current window
 496 wxSize wxWindowBase::DoGetBestSize() const
 497 {
 498     wxSize best;
 499
 500     if ( m_windowSizer )
 501     {
 502         best = m_windowSizer->GetMinSize();
 503     }
 504 #if wxUSE_CONSTRAINTS
 505     else if ( m_constraints )
 506     {
 507         wxConstCast(this, wxWindowBase)->SatisfyConstraints();
 508
 509         // our minimal acceptable size is such that all our windows fit inside
 510         int maxX = 0,
 511             maxY = 0;
 512
 513         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 514               node;
 515               node = node->GetNext() )
 516         {
 517             wxLayoutConstraints *c = node->GetData()->GetConstraints();
 518             if ( !c )
 519             {
 520                 // it's not normal that we have an unconstrained child, but
 521                 // what can we do about it?
 522                 continue;
 523             }
 524
 525             int x = c->right.GetValue(),
 526                 y = c->bottom.GetValue();
 527
 528             if ( x > maxX )
 529                 maxX = x;
 530
 531             if ( y > maxY )
 532                 maxY = y;
 533
 534             // TODO: we must calculate the overlaps somehow, otherwise we
 535             //       will never return a size bigger than the current one :-(
 536         }
 537
 538         best = wxSize(maxX, maxY);
 539     }
 540 #endif // wxUSE_CONSTRAINTS
 541     else if ( !GetChildren().empty()
 542 #ifdef __WXMAC__
 543               && wxHasRealChildren(this)
 544 #endif
 545               )
 546     {
 547         // our minimal acceptable size is such that all our visible child
 548         // windows fit inside
 549         int maxX = 0,
 550             maxY = 0;
 551
 552         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 553               node;
 554               node = node->GetNext() )
 555         {
 556             wxWindow *win = node->GetData();
 557             if ( win->IsTopLevel()
 558                     || !win->IsShown()
 559 #if wxUSE_STATUSBAR
 560                         || wxDynamicCast(win, wxStatusBar)
 561 #endif // wxUSE_STATUSBAR
 562                )
 563             {
 564                 // dialogs and frames lie in different top level windows -
 565                 // don't deal with them here; as for the status bars, they
 566                 // don't lie in the client area at all
 567                 continue;
 568             }
 569
 570             int wx, wy, ww, wh;
 571             win->GetPosition(&wx, &wy);
 572
 573             // if the window hadn't been positioned yet, assume that it is in
 574             // the origin
 575             if ( wx == wxDefaultCoord )
 576                 wx = 0;
 577             if ( wy == wxDefaultCoord )
 578                 wy = 0;
 579
 580             win->GetSize(&ww, &wh);
 581             if ( wx + ww > maxX )
 582                 maxX = wx + ww;
 583             if ( wy + wh > maxY )
 584                 maxY = wy + wh;
 585         }
 586
 587         best = wxSize(maxX, maxY);
 588     }
 589     else // ! has children
 590     {
 591         // for a generic window there is no natural best size so, if the
 592         // minimal size is not set, use the current size but take care to
 593         // remember it as minimal size for the next time because our best size
 594         // should be constant: otherwise we could get into a situation when the
 595         // window is initially at some size, then expanded to a larger size and
 596         // then, when the containing window is shrunk back (because our initial
 597         // best size had been used for computing the parent min size), we can't
 598         // be shrunk back any more because our best size is now bigger
 599         wxSize size = GetMinSize();
 600         if ( !size.IsFullySpecified() )
 601         {
 602             size.SetDefaults(GetSize());
 603             wxConstCast(this, wxWindowBase)->SetMinSize(size);
 604         }
 605
 606         // return as-is, unadjusted by the client size difference.
 607         return size;
 608     }
 609
 610     // Add any difference between size and client size
 611     wxSize diff = GetSize() - GetClientSize();
 612     best.x += wxMax(0, diff.x);
 613     best.y += wxMax(0, diff.y);
 614
 615     return best;
 616 }
 617
 618 // helper of GetWindowBorderSize(): as many ports don't implement support for
 619 // wxSYS_BORDER/EDGE_X/Y metrics in their wxSystemSettings, use hard coded
 620 // fallbacks in this case
 621 static int wxGetMetricOrDefault(wxSystemMetric what)
 622 {
 623     int rc = wxSystemSettings::GetMetric(what);
 624     if ( rc == -1 )
 625     {
 626         switch ( what )
 627         {
 628             case wxSYS_BORDER_X:
 629             case wxSYS_BORDER_Y:
 630                 // 2D border is by default 1 pixel wide
 631                 rc = 1;
 632                 break;
 633
 634             case wxSYS_EDGE_X:
 635             case wxSYS_EDGE_Y:
 636                 // 3D borders are by default 2 pixels
 637                 rc = 2;
 638                 break;
 639
 640             default:
 641                 wxFAIL_MSG( _T("unexpected wxGetMetricOrDefault() argument") );
 642                 rc = 0;
 643         }
 644     }
 645
 646     return rc;
 647 }
 648
 649 wxSize wxWindowBase::GetWindowBorderSize() const
 650 {
 651     wxSize size;
 652
 653     switch ( GetBorder() )
 654     {
 655         case wxBORDER_NONE:
 656             // nothing to do, size is already (0, 0)
 657             break;
 658
 659         case wxBORDER_SIMPLE:
 660         case wxBORDER_STATIC:
 661             size.x = wxGetMetricOrDefault(wxSYS_BORDER_X);
 662             size.y = wxGetMetricOrDefault(wxSYS_BORDER_Y);
 663             break;
 664
 665         case wxBORDER_SUNKEN:
 666         case wxBORDER_RAISED:
 667             size.x = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_X),
 668                            wxGetMetricOrDefault(wxSYS_BORDER_X));
 669             size.y = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_Y),
 670                            wxGetMetricOrDefault(wxSYS_BORDER_Y));
 671             break;
 672
 673         case wxBORDER_DOUBLE:
 674             size.x = wxGetMetricOrDefault(wxSYS_EDGE_X) +
 675                         wxGetMetricOrDefault(wxSYS_BORDER_X);
 676             size.y = wxGetMetricOrDefault(wxSYS_EDGE_Y) +
 677                         wxGetMetricOrDefault(wxSYS_BORDER_Y);
 678             break;
 679
 680         default:
 681             wxFAIL_MSG(_T("Unknown border style."));
 682             break;
 683     }
 684
 685     // we have borders on both sides
 686     return size*2;
 687 }
 688
 689 wxSize wxWindowBase::GetEffectiveMinSize() const
 690 {
 691     // merge the best size with the min size, giving priority to the min size
 692     wxSize min = GetMinSize();
 693     if (min.x == wxDefaultCoord || min.y == wxDefaultCoord)
 694     {
 695         wxSize best = GetBestSize();
 696         if (min.x == wxDefaultCoord) min.x =  best.x;
 697         if (min.y == wxDefaultCoord) min.y =  best.y;
 698     }
 699     return min;
 700 }
 701
 702
 703 void wxWindowBase::SetInitialSize(const wxSize& size)
 704 {
 705     // Set the min size to the size passed in.  This will usually either be
 706     // wxDefaultSize or the size passed to this window's ctor/Create function.
 707     SetMinSize(size);
 708
 709     // Merge the size with the best size if needed
 710     wxSize best = GetEffectiveMinSize();
 711
 712     // If the current size doesn't match then change it
 713     if (GetSize() != best)
 714         SetSize(best);
 715 }
 716
 717
 718 // by default the origin is not shifted
 719 wxPoint wxWindowBase::GetClientAreaOrigin() const
 720 {
 721     return wxPoint(0,0);
 722 }
 723
 724 wxSize wxWindowBase::ClientToWindowSize(const wxSize& size) const
 725 {
 726     const wxSize diff(GetSize() - GetClientSize());
 727
 728     return wxSize(size.x == -1 ? -1 : size.x + diff.x,
 729                   size.y == -1 ? -1 : size.y + diff.y);
 730 }
 731
 732 wxSize wxWindowBase::WindowToClientSize(const wxSize& size) const
 733 {
 734     const wxSize diff(GetSize() - GetClientSize());
 735
 736     return wxSize(size.x == -1 ? -1 : size.x - diff.x,
 737                   size.y == -1 ? -1 : size.y - diff.y);
 738 }
 739
 740 void wxWindowBase::SetWindowVariant( wxWindowVariant variant )
 741 {
 742     if ( m_windowVariant != variant )
 743     {
 744         m_windowVariant = variant;
 745
 746         DoSetWindowVariant(variant);
 747     }
 748 }
 749
 750 void wxWindowBase::DoSetWindowVariant( wxWindowVariant variant )
 751 {
 752     // adjust the font height to correspond to our new variant (notice that
 753     // we're only called if something really changed)
 754     wxFont font = GetFont();
 755     int size = font.GetPointSize();
 756     switch ( variant )
 757     {
 758         case wxWINDOW_VARIANT_NORMAL:
 759             break;
 760
 761         case wxWINDOW_VARIANT_SMALL:
 762             size *= 3;
 763             size /= 4;
 764             break;
 765
 766         case wxWINDOW_VARIANT_MINI:
 767             size *= 2;
 768             size /= 3;
 769             break;
 770
 771         case wxWINDOW_VARIANT_LARGE:
 772             size *= 5;
 773             size /= 4;
 774             break;
 775
 776         default:
 777             wxFAIL_MSG(_T("unexpected window variant"));
 778             break;
 779     }
 780
 781     font.SetPointSize(size);
 782     SetFont(font);
 783 }
 784
 785 void wxWindowBase::DoSetSizeHints( int minW, int minH,
 786                                    int maxW, int maxH,
 787                                    int WXUNUSED(incW), int WXUNUSED(incH) )
 788 {
 789     wxCHECK_RET( (minW == wxDefaultCoord || maxW == wxDefaultCoord || minW <= maxW) &&
 790                     (minH == wxDefaultCoord || maxH == wxDefaultCoord || minH <= maxH),
 791                  _T("min width/height must be less than max width/height!") );
 792
 793     m_minWidth = minW;
 794     m_maxWidth = maxW;
 795     m_minHeight = minH;
 796     m_maxHeight = maxH;
 797 }
 798
 799
 800 #if WXWIN_COMPATIBILITY_2_8
 801 void wxWindowBase::SetVirtualSizeHints(int WXUNUSED(minW), int WXUNUSED(minH),
 802                                        int WXUNUSED(maxW), int WXUNUSED(maxH))
 803 {
 804 }
 805
 806 void wxWindowBase::SetVirtualSizeHints(const wxSize& WXUNUSED(minsize),
 807                                        const wxSize& WXUNUSED(maxsize))
 808 {
 809 }
 810 #endif // WXWIN_COMPATIBILITY_2_8
 811
 812 void wxWindowBase::DoSetVirtualSize( int x, int y )
 813 {
 814     m_virtualSize = wxSize(x, y);
 815 }
 816
 817 wxSize wxWindowBase::DoGetVirtualSize() const
 818 {
 819     // we should use the entire client area so if it is greater than our
 820     // virtual size, expand it to fit (otherwise if the window is big enough we
 821     // wouldn't be using parts of it)
 822     wxSize size = GetClientSize();
 823     if ( m_virtualSize.x > size.x )
 824         size.x = m_virtualSize.x;
 825
 826     if ( m_virtualSize.y >= size.y )
 827         size.y = m_virtualSize.y;
 828
 829     return size;
 830 }
 831
 832 void wxWindowBase::DoGetScreenPosition(int *x, int *y) const
 833 {
 834     // screen position is the same as (0, 0) in client coords for non TLWs (and
 835     // TLWs override this method)
 836     if ( x )
 837         *x = 0;
 838     if ( y )
 839         *y = 0;
 840
 841     ClientToScreen(x, y);
 842 }
 843
 844 void wxWindowBase::SendSizeEvent()
 845 {
 846     wxSizeEvent event(GetSize(), GetId());
 847     event.SetEventObject(this);
 848     HandleWindowEvent(event);
 849 }
 850
 851 void wxWindowBase::SendSizeEventToParent()
 852 {
 853     wxWindow * const parent = GetParent();
 854     if ( parent && !parent->IsBeingDeleted() )
 855         parent->SendSizeEvent();
 856 }
 857
 858 // ----------------------------------------------------------------------------
 859 // show/hide/enable/disable the window
 860 // ----------------------------------------------------------------------------
 861
 862 bool wxWindowBase::Show(bool show)
 863 {
 864     if ( show != m_isShown )
 865     {
 866         m_isShown = show;
 867
 868         return true;
 869     }
 870     else
 871     {
 872         return false;
 873     }
 874 }
 875
 876 bool wxWindowBase::IsEnabled() const
 877 {
 878     return IsThisEnabled() && (IsTopLevel() || !GetParent() || GetParent()->IsEnabled());
 879 }
 880
 881 void wxWindowBase::NotifyWindowOnEnableChange(bool enabled)
 882 {
 883 #ifndef wxHAS_NATIVE_ENABLED_MANAGEMENT
 884     DoEnable(enabled);
 885 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 886
 887     OnEnabled(enabled);
 888
 889     // If we are top-level then the logic doesn't apply - otherwise
 890     // showing a modal dialog would result in total greying out (and ungreying
 891     // out later) of everything which would be really ugly
 892     if ( IsTopLevel() )
 893         return;
 894
 895     for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 896           node;
 897           node = node->GetNext() )
 898     {
 899         wxWindowBase * const child = node->GetData();
 900         if ( !child->IsTopLevel() && child->IsThisEnabled() )
 901             child->NotifyWindowOnEnableChange(enabled);
 902     }
 903 }
 904
 905 bool wxWindowBase::Enable(bool enable)
 906 {
 907     if ( enable == IsThisEnabled() )
 908         return false;
 909
 910     m_isEnabled = enable;
 911
 912 #ifdef wxHAS_NATIVE_ENABLED_MANAGEMENT
 913     DoEnable(enable);
 914 #else // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 915     wxWindowBase * const parent = GetParent();
 916     if( !IsTopLevel() && parent && !parent->IsEnabled() )
 917     {
 918         return true;
 919     }
 920 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 921
 922     NotifyWindowOnEnableChange(enable);
 923
 924     return true;
 925 }
 926
 927 bool wxWindowBase::IsShownOnScreen() const
 928 {
 929     // A window is shown on screen if it itself is shown and so are all its
 930     // parents. But if a window is toplevel one, then its always visible on
 931     // screen if IsShown() returns true, even if it has a hidden parent.
 932     return IsShown() &&
 933            (IsTopLevel() || GetParent() == NULL || GetParent()->IsShownOnScreen());
 934 }
 935
 936 // ----------------------------------------------------------------------------
 937 // RTTI
 938 // ----------------------------------------------------------------------------
 939
 940 bool wxWindowBase::IsTopLevel() const
 941 {
 942     return false;
 943 }
 944
 945 // ----------------------------------------------------------------------------
 946 // Freeze/Thaw
 947 // ----------------------------------------------------------------------------
 948
 949 void wxWindowBase::Freeze()
 950 {
 951     if ( !m_freezeCount++ )
 952     {
 953         // physically freeze this window:
 954         DoFreeze();
 955
 956         // and recursively freeze all children:
 957         for ( wxWindowList::iterator i = GetChildren().begin();
 958               i != GetChildren().end(); ++i )
 959         {
 960             wxWindow *child = *i;
 961             if ( child->IsTopLevel() )
 962                 continue;
 963
 964             child->Freeze();
 965         }
 966     }
 967 }
 968
 969 void wxWindowBase::Thaw()
 970 {
 971     wxASSERT_MSG( m_freezeCount, "Thaw() without matching Freeze()" );
 972
 973     if ( !--m_freezeCount )
 974     {
 975         // recursively thaw all children:
 976         for ( wxWindowList::iterator i = GetChildren().begin();
 977               i != GetChildren().end(); ++i )
 978         {
 979             wxWindow *child = *i;
 980             if ( child->IsTopLevel() )
 981                 continue;
 982
 983             child->Thaw();
 984         }
 985
 986         // physically thaw this window:
 987         DoThaw();
 988     }
 989 }
 990
 991 // ----------------------------------------------------------------------------
 992 // reparenting the window
 993 // ----------------------------------------------------------------------------
 994
 995 void wxWindowBase::AddChild(wxWindowBase *child)
 996 {
 997     wxCHECK_RET( child, wxT("can't add a NULL child") );
 998
 999     // this should never happen and it will lead to a crash later if it does
1000     // because RemoveChild() will remove only one node from the children list
1001     // and the other(s) one(s) will be left with dangling pointers in them
1002     wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), _T("AddChild() called twice") );
1003
1004     GetChildren().Append((wxWindow*)child);
1005     child->SetParent(this);
1006
1007     // adding a child while frozen will assert when thawn, so freeze it as if
1008     // it had been already present when we were frozen
1009     if ( IsFrozen() && !child->IsTopLevel() )
1010         child->Freeze();
1011 }
1012
1013 void wxWindowBase::RemoveChild(wxWindowBase *child)
1014 {
1015     wxCHECK_RET( child, wxT("can't remove a NULL child") );
1016
1017     // removing a child while frozen may result in permanently frozen window
1018     // if used e.g. from Reparent(), so thaw it
1019     if ( IsFrozen() && !child->IsTopLevel() )
1020         child->Thaw();
1021
1022     GetChildren().DeleteObject((wxWindow *)child);
1023     child->SetParent(NULL);
1024 }
1025
1026 bool wxWindowBase::Reparent(wxWindowBase *newParent)
1027 {
1028     wxWindow *oldParent = GetParent();
1029     if ( newParent == oldParent )
1030     {
1031         // nothing done
1032         return false;
1033     }
1034
1035     const bool oldEnabledState = IsEnabled();
1036
1037     // unlink this window from the existing parent.
1038     if ( oldParent )
1039     {
1040         oldParent->RemoveChild(this);
1041     }
1042     else
1043     {
1044         wxTopLevelWindows.DeleteObject((wxWindow *)this);
1045     }
1046
1047     // add it to the new one
1048     if ( newParent )
1049     {
1050         newParent->AddChild(this);
1051     }
1052     else
1053     {
1054         wxTopLevelWindows.Append((wxWindow *)this);
1055     }
1056
1057     // We need to notify window (and its subwindows) if by changing the parent
1058     // we also change our enabled/disabled status.
1059     const bool newEnabledState = IsEnabled();
1060     if ( newEnabledState != oldEnabledState )
1061     {
1062         NotifyWindowOnEnableChange(newEnabledState);
1063     }
1064
1065     return true;
1066 }
1067
1068 // ----------------------------------------------------------------------------
1069 // event handler stuff
1070 // ----------------------------------------------------------------------------
1071
1072 void wxWindowBase::PushEventHandler(wxEvtHandler *handler)
1073 {
1074     wxEvtHandler *handlerOld = GetEventHandler();
1075
1076     handler->SetNextHandler(handlerOld);
1077
1078     if ( handlerOld )
1079         GetEventHandler()->SetPreviousHandler(handler);
1080
1081     SetEventHandler(handler);
1082 }
1083
1084 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
1085 {
1086     wxEvtHandler *handlerA = GetEventHandler();
1087     if ( handlerA )
1088     {
1089         wxEvtHandler *handlerB = handlerA->GetNextHandler();
1090         handlerA->SetNextHandler((wxEvtHandler *)NULL);
1091
1092         if ( handlerB )
1093             handlerB->SetPreviousHandler((wxEvtHandler *)NULL);
1094         SetEventHandler(handlerB);
1095
1096         if ( deleteHandler )
1097         {
1098             delete handlerA;
1099             handlerA = (wxEvtHandler *)NULL;
1100         }
1101     }
1102
1103     return handlerA;
1104 }
1105
1106 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handler)
1107 {
1108     wxCHECK_MSG( handler, false, _T("RemoveEventHandler(NULL) called") );
1109
1110     wxEvtHandler *handlerPrev = NULL,
1111                  *handlerCur = GetEventHandler();
1112     while ( handlerCur )
1113     {
1114         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
1115
1116         if ( handlerCur == handler )
1117         {
1118             if ( handlerPrev )
1119             {
1120                 handlerPrev->SetNextHandler(handlerNext);
1121             }
1122             else
1123             {
1124                 SetEventHandler(handlerNext);
1125             }
1126
1127             if ( handlerNext )
1128             {
1129                 handlerNext->SetPreviousHandler ( handlerPrev );
1130             }
1131
1132             handler->SetNextHandler(NULL);
1133             handler->SetPreviousHandler(NULL);
1134
1135             return true;
1136         }
1137
1138         handlerPrev = handlerCur;
1139         handlerCur = handlerNext;
1140     }
1141
1142     wxFAIL_MSG( _T("where has the event handler gone?") );
1143
1144     return false;
1145 }
1146
1147 bool wxWindowBase::HandleWindowEvent(wxEvent& event) const
1148 {
1149     return GetEventHandler()->SafelyProcessEvent(event);
1150 }
1151
1152 // ----------------------------------------------------------------------------
1153 // colours, fonts &c
1154 // ----------------------------------------------------------------------------
1155
1156 void wxWindowBase::InheritAttributes()
1157 {
1158     const wxWindowBase * const parent = GetParent();
1159     if ( !parent )
1160         return;
1161
1162     // we only inherit attributes which had been explicitly set for the parent
1163     // which ensures that this only happens if the user really wants it and
1164     // not by default which wouldn't make any sense in modern GUIs where the
1165     // controls don't all use the same fonts (nor colours)
1166     if ( parent->m_inheritFont && !m_hasFont )
1167         SetFont(parent->GetFont());
1168
1169     // in addition, there is a possibility to explicitly forbid inheriting
1170     // colours at each class level by overriding ShouldInheritColours()
1171     if ( ShouldInheritColours() )
1172     {
1173         if ( parent->m_inheritFgCol && !m_hasFgCol )
1174             SetForegroundColour(parent->GetForegroundColour());
1175
1176         // inheriting (solid) background colour is wrong as it totally breaks
1177         // any kind of themed backgrounds
1178         //
1179         // instead, the controls should use the same background as their parent
1180         // (ideally by not drawing it at all)
1181 #if 0
1182         if ( parent->m_inheritBgCol && !m_hasBgCol )
1183             SetBackgroundColour(parent->GetBackgroundColour());
1184 #endif // 0
1185     }
1186 }
1187
1188 /* static */ wxVisualAttributes
1189 wxWindowBase::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1190 {
1191     // it is important to return valid values for all attributes from here,
1192     // GetXXX() below rely on this
1193     wxVisualAttributes attrs;
1194     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
1195     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
1196
1197     // On Smartphone/PocketPC, wxSYS_COLOUR_WINDOW is a better reflection of
1198     // the usual background colour than wxSYS_COLOUR_BTNFACE.
1199     // It's a pity that wxSYS_COLOUR_WINDOW isn't always a suitable background
1200     // colour on other platforms.
1201
1202 #if defined(__WXWINCE__) && (defined(__SMARTPHONE__) || defined(__POCKETPC__))
1203     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1204 #else
1205     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
1206 #endif
1207     return attrs;
1208 }
1209
1210 wxColour wxWindowBase::GetBackgroundColour() const
1211 {
1212     if ( !m_backgroundColour.IsOk() )
1213     {
1214         wxASSERT_MSG( !m_hasBgCol, _T("we have invalid explicit bg colour?") );
1215
1216         // get our default background colour
1217         wxColour colBg = GetDefaultAttributes().colBg;
1218
1219         // we must return some valid colour to avoid redoing this every time
1220         // and also to avoid surprizing the applications written for older
1221         // wxWidgets versions where GetBackgroundColour() always returned
1222         // something -- so give them something even if it doesn't make sense
1223         // for this window (e.g. it has a themed background)
1224         if ( !colBg.Ok() )
1225             colBg = GetClassDefaultAttributes().colBg;
1226
1227         return colBg;
1228     }
1229     else
1230         return m_backgroundColour;
1231 }
1232
1233 wxColour wxWindowBase::GetForegroundColour() const
1234 {
1235     // logic is the same as above
1236     if ( !m_hasFgCol && !m_foregroundColour.Ok() )
1237     {
1238         wxColour colFg = GetDefaultAttributes().colFg;
1239
1240         if ( !colFg.IsOk() )
1241             colFg = GetClassDefaultAttributes().colFg;
1242
1243         return colFg;
1244     }
1245     else
1246         return m_foregroundColour;
1247 }
1248
1249 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
1250 {
1251     if ( colour == m_backgroundColour )
1252         return false;
1253
1254     m_hasBgCol = colour.IsOk();
1255     if ( m_backgroundStyle != wxBG_STYLE_CUSTOM )
1256         m_backgroundStyle = m_hasBgCol ? wxBG_STYLE_COLOUR : wxBG_STYLE_SYSTEM;
1257
1258     m_inheritBgCol = m_hasBgCol;
1259     m_backgroundColour = colour;
1260     SetThemeEnabled( !m_hasBgCol && !m_foregroundColour.Ok() );
1261     return true;
1262 }
1263
1264 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
1265 {
1266     if (colour == m_foregroundColour )
1267         return false;
1268
1269     m_hasFgCol = colour.IsOk();
1270     m_inheritFgCol = m_hasFgCol;
1271     m_foregroundColour = colour;
1272     SetThemeEnabled( !m_hasFgCol && !m_backgroundColour.Ok() );
1273     return true;
1274 }
1275
1276 bool wxWindowBase::SetCursor(const wxCursor& cursor)
1277 {
1278     // setting an invalid cursor is ok, it means that we don't have any special
1279     // cursor
1280     if ( m_cursor.IsSameAs(cursor) )
1281     {
1282         // no change
1283         return false;
1284     }
1285
1286     m_cursor = cursor;
1287
1288     return true;
1289 }
1290
1291 wxFont wxWindowBase::GetFont() const
1292 {
1293     // logic is the same as in GetBackgroundColour()
1294     if ( !m_font.IsOk() )
1295     {
1296         wxASSERT_MSG( !m_hasFont, _T("we have invalid explicit font?") );
1297
1298         wxFont font = GetDefaultAttributes().font;
1299         if ( !font.IsOk() )
1300             font = GetClassDefaultAttributes().font;
1301
1302         return font;
1303     }
1304     else
1305         return m_font;
1306 }
1307
1308 bool wxWindowBase::SetFont(const wxFont& font)
1309 {
1310     if ( font == m_font )
1311     {
1312         // no change
1313         return false;
1314     }
1315
1316     m_font = font;
1317     m_hasFont = font.IsOk();
1318     m_inheritFont = m_hasFont;
1319
1320     InvalidateBestSize();
1321
1322     return true;
1323 }
1324
1325 #if wxUSE_PALETTE
1326
1327 void wxWindowBase::SetPalette(const wxPalette& pal)
1328 {
1329     m_hasCustomPalette = true;
1330     m_palette = pal;
1331
1332     // VZ: can anyone explain me what do we do here?
1333     wxWindowDC d((wxWindow *) this);
1334     d.SetPalette(pal);
1335 }
1336
1337 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
1338 {
1339     wxWindow *win = (wxWindow *)this;
1340     while ( win && !win->HasCustomPalette() )
1341     {
1342         win = win->GetParent();
1343     }
1344
1345     return win;
1346 }
1347
1348 #endif // wxUSE_PALETTE
1349
1350 #if wxUSE_CARET
1351 void wxWindowBase::SetCaret(wxCaret *caret)
1352 {
1353     if ( m_caret )
1354     {
1355         delete m_caret;
1356     }
1357
1358     m_caret = caret;
1359
1360     if ( m_caret )
1361     {
1362         wxASSERT_MSG( m_caret->GetWindow() == this,
1363                       wxT("caret should be created associated to this window") );
1364     }
1365 }
1366 #endif // wxUSE_CARET
1367
1368 #if wxUSE_VALIDATORS
1369 // ----------------------------------------------------------------------------
1370 // validators
1371 // ----------------------------------------------------------------------------
1372
1373 void wxWindowBase::SetValidator(const wxValidator& validator)
1374 {
1375     if ( m_windowValidator )
1376         delete m_windowValidator;
1377
1378     m_windowValidator = (wxValidator *)validator.Clone();
1379
1380     if ( m_windowValidator )
1381         m_windowValidator->SetWindow(this);
1382 }
1383 #endif // wxUSE_VALIDATORS
1384
1385 // ----------------------------------------------------------------------------
1386 // update region stuff
1387 // ----------------------------------------------------------------------------
1388
1389 wxRect wxWindowBase::GetUpdateClientRect() const
1390 {
1391     wxRegion rgnUpdate = GetUpdateRegion();
1392     rgnUpdate.Intersect(GetClientRect());
1393     wxRect rectUpdate = rgnUpdate.GetBox();
1394     wxPoint ptOrigin = GetClientAreaOrigin();
1395     rectUpdate.x -= ptOrigin.x;
1396     rectUpdate.y -= ptOrigin.y;
1397
1398     return rectUpdate;
1399 }
1400
1401 bool wxWindowBase::DoIsExposed(int x, int y) const
1402 {
1403     return m_updateRegion.Contains(x, y) != wxOutRegion;
1404 }
1405
1406 bool wxWindowBase::DoIsExposed(int x, int y, int w, int h) const
1407 {
1408     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
1409 }
1410
1411 void wxWindowBase::ClearBackground()
1412 {
1413     // wxGTK uses its own version, no need to add never used code
1414 #ifndef __WXGTK__
1415     wxClientDC dc((wxWindow *)this);
1416     wxBrush brush(GetBackgroundColour(), wxBRUSHSTYLE_SOLID);
1417     dc.SetBackground(brush);
1418     dc.Clear();
1419 #endif // __WXGTK__
1420 }
1421
1422 // ----------------------------------------------------------------------------
1423 // find child window by id or name
1424 // ----------------------------------------------------------------------------
1425
1426 wxWindow *wxWindowBase::FindWindow(long id) const
1427 {
1428     if ( id == m_windowId )
1429         return (wxWindow *)this;
1430
1431     wxWindowBase *res = (wxWindow *)NULL;
1432     wxWindowList::compatibility_iterator node;
1433     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1434     {
1435         wxWindowBase *child = node->GetData();
1436         res = child->FindWindow( id );
1437     }
1438
1439     return (wxWindow *)res;
1440 }
1441
1442 wxWindow *wxWindowBase::FindWindow(const wxString& name) const
1443 {
1444     if ( name == m_windowName )
1445         return (wxWindow *)this;
1446
1447     wxWindowBase *res = (wxWindow *)NULL;
1448     wxWindowList::compatibility_iterator node;
1449     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1450     {
1451         wxWindow *child = node->GetData();
1452         res = child->FindWindow(name);
1453     }
1454
1455     return (wxWindow *)res;
1456 }
1457
1458
1459 // find any window by id or name or label: If parent is non-NULL, look through
1460 // children for a label or title matching the specified string. If NULL, look
1461 // through all top-level windows.
1462 //
1463 // to avoid duplicating code we reuse the same helper function but with
1464 // different comparators
1465
1466 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1467                                 const wxString& label, long id);
1468
1469 static
1470 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1471                            long WXUNUSED(id))
1472 {
1473     return win->GetLabel() == label;
1474 }
1475
1476 static
1477 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1478                           long WXUNUSED(id))
1479 {
1480     return win->GetName() == label;
1481 }
1482
1483 static
1484 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1485                         long id)
1486 {
1487     return win->GetId() == id;
1488 }
1489
1490 // recursive helper for the FindWindowByXXX() functions
1491 static
1492 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1493                                   const wxString& label,
1494                                   long id,
1495                                   wxFindWindowCmp cmp)
1496 {
1497     if ( parent )
1498     {
1499         // see if this is the one we're looking for
1500         if ( (*cmp)(parent, label, id) )
1501             return (wxWindow *)parent;
1502
1503         // It wasn't, so check all its children
1504         for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
1505               node;
1506               node = node->GetNext() )
1507         {
1508             // recursively check each child
1509             wxWindow *win = (wxWindow *)node->GetData();
1510             wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1511             if (retwin)
1512                 return retwin;
1513         }
1514     }
1515
1516     // Not found
1517     return NULL;
1518 }
1519
1520 // helper for FindWindowByXXX()
1521 static
1522 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1523                              const wxString& label,
1524                              long id,
1525                              wxFindWindowCmp cmp)
1526 {
1527     if ( parent )
1528     {
1529         // just check parent and all its children
1530         return wxFindWindowRecursively(parent, label, id, cmp);
1531     }
1532
1533     // start at very top of wx's windows
1534     for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1535           node;
1536           node = node->GetNext() )
1537     {
1538         // recursively check each window & its children
1539         wxWindow *win = node->GetData();
1540         wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1541         if (retwin)
1542             return retwin;
1543     }
1544
1545     return NULL;
1546 }
1547
1548 /* static */
1549 wxWindow *
1550 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1551 {
1552     return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1553 }
1554
1555 /* static */
1556 wxWindow *
1557 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1558 {
1559     wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1560
1561     if ( !win )
1562     {
1563         // fall back to the label
1564         win = FindWindowByLabel(title, parent);
1565     }
1566
1567     return win;
1568 }
1569
1570 /* static */
1571 wxWindow *
1572 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1573 {
1574     return wxFindWindowHelper(parent, wxEmptyString, id, wxFindWindowCmpIds);
1575 }
1576
1577 // ----------------------------------------------------------------------------
1578 // dialog oriented functions
1579 // ----------------------------------------------------------------------------
1580
1581 void wxWindowBase::MakeModal(bool modal)
1582 {
1583     // Disable all other windows
1584     if ( IsTopLevel() )
1585     {
1586         wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1587         while (node)
1588         {
1589             wxWindow *win = node->GetData();
1590             if (win != this)
1591                 win->Enable(!modal);
1592
1593             node = node->GetNext();
1594         }
1595     }
1596 }
1597
1598 bool wxWindowBase::Validate()
1599 {
1600 #if wxUSE_VALIDATORS
1601     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1602
1603     wxWindowList::compatibility_iterator node;
1604     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1605     {
1606         wxWindowBase *child = node->GetData();
1607         wxValidator *validator = child->GetValidator();
1608         if ( validator && !validator->Validate((wxWindow *)this) )
1609         {
1610             return false;
1611         }
1612
1613         if ( recurse && !child->Validate() )
1614         {
1615             return false;
1616         }
1617     }
1618 #endif // wxUSE_VALIDATORS
1619
1620     return true;
1621 }
1622
1623 bool wxWindowBase::TransferDataToWindow()
1624 {
1625 #if wxUSE_VALIDATORS
1626     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1627
1628     wxWindowList::compatibility_iterator node;
1629     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1630     {
1631         wxWindowBase *child = node->GetData();
1632         wxValidator *validator = child->GetValidator();
1633         if ( validator && !validator->TransferToWindow() )
1634         {
1635             wxLogWarning(_("Could not transfer data to window"));
1636 #if wxUSE_LOG
1637             wxLog::FlushActive();
1638 #endif // wxUSE_LOG
1639
1640             return false;
1641         }
1642
1643         if ( recurse )
1644         {
1645             if ( !child->TransferDataToWindow() )
1646             {
1647                 // warning already given
1648                 return false;
1649             }
1650         }
1651     }
1652 #endif // wxUSE_VALIDATORS
1653
1654     return true;
1655 }
1656
1657 bool wxWindowBase::TransferDataFromWindow()
1658 {
1659 #if wxUSE_VALIDATORS
1660     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1661
1662     wxWindowList::compatibility_iterator node;
1663     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1664     {
1665         wxWindow *child = node->GetData();
1666         wxValidator *validator = child->GetValidator();
1667         if ( validator && !validator->TransferFromWindow() )
1668         {
1669             // nop warning here because the application is supposed to give
1670             // one itself - we don't know here what might have gone wrongly
1671
1672             return false;
1673         }
1674
1675         if ( recurse )
1676         {
1677             if ( !child->TransferDataFromWindow() )
1678             {
1679                 // warning already given
1680                 return false;
1681             }
1682         }
1683     }
1684 #endif // wxUSE_VALIDATORS
1685
1686     return true;
1687 }
1688
1689 void wxWindowBase::InitDialog()
1690 {
1691     wxInitDialogEvent event(GetId());
1692     event.SetEventObject( this );
1693     GetEventHandler()->ProcessEvent(event);
1694 }
1695
1696 // ----------------------------------------------------------------------------
1697 // context-sensitive help support
1698 // ----------------------------------------------------------------------------
1699
1700 #if wxUSE_HELP
1701
1702 // associate this help text with this window
1703 void wxWindowBase::SetHelpText(const wxString& text)
1704 {
1705     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1706     if ( helpProvider )
1707     {
1708         helpProvider->AddHelp(this, text);
1709     }
1710 }
1711
1712 #if WXWIN_COMPATIBILITY_2_8
1713 // associate this help text with all windows with the same id as this
1714 // one
1715 void wxWindowBase::SetHelpTextForId(const wxString& text)
1716 {
1717     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1718     if ( helpProvider )
1719     {
1720         helpProvider->AddHelp(GetId(), text);
1721     }
1722 }
1723 #endif // WXWIN_COMPATIBILITY_2_8
1724
1725 // get the help string associated with this window (may be empty)
1726 // default implementation forwards calls to the help provider
1727 wxString
1728 wxWindowBase::GetHelpTextAtPoint(const wxPoint & WXUNUSED(pt),
1729                                  wxHelpEvent::Origin WXUNUSED(origin)) const
1730 {
1731     wxString text;
1732     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1733     if ( helpProvider )
1734     {
1735         text = helpProvider->GetHelp(this);
1736     }
1737
1738     return text;
1739 }
1740
1741 // show help for this window
1742 void wxWindowBase::OnHelp(wxHelpEvent& event)
1743 {
1744     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1745     if ( helpProvider )
1746     {
1747         wxPoint pos = event.GetPosition();
1748         const wxHelpEvent::Origin origin = event.GetOrigin();
1749         if ( origin == wxHelpEvent::Origin_Keyboard )
1750         {
1751             // if the help event was generated from keyboard it shouldn't
1752             // appear at the mouse position (which is still the only position
1753             // associated with help event) if the mouse is far away, although
1754             // we still do use the mouse position if it's over the window
1755             // because we suppose the user looks approximately at the mouse
1756             // already and so it would be more convenient than showing tooltip
1757             // at some arbitrary position which can be quite far from it
1758             const wxRect rectClient = GetClientRect();
1759             if ( !rectClient.Contains(ScreenToClient(pos)) )
1760             {
1761                 // position help slightly under and to the right of this window
1762                 pos = ClientToScreen(wxPoint(
1763                         2*GetCharWidth(),
1764                         rectClient.height + GetCharHeight()
1765                       ));
1766             }
1767         }
1768
1769         if ( helpProvider->ShowHelpAtPoint(this, pos, origin) )
1770         {
1771             // skip the event.Skip() below
1772             return;
1773         }
1774     }
1775
1776     event.Skip();
1777 }
1778
1779 #endif // wxUSE_HELP
1780
1781 // ----------------------------------------------------------------------------
1782 // tooltips
1783 // ----------------------------------------------------------------------------
1784
1785 #if wxUSE_TOOLTIPS
1786
1787 void wxWindowBase::SetToolTip( const wxString &tip )
1788 {
1789     // don't create the new tooltip if we already have one
1790     if ( m_tooltip )
1791     {
1792         m_tooltip->SetTip( tip );
1793     }
1794     else
1795     {
1796         SetToolTip( new wxToolTip( tip ) );
1797     }
1798
1799     // setting empty tooltip text does not remove the tooltip any more - use
1800     // SetToolTip((wxToolTip *)NULL) for this
1801 }
1802
1803 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1804 {
1805     if ( m_tooltip != tooltip )
1806     {
1807         if ( m_tooltip )
1808             delete m_tooltip;
1809
1810         m_tooltip = tooltip;
1811     }
1812 }
1813
1814 #endif // wxUSE_TOOLTIPS
1815
1816 // ----------------------------------------------------------------------------
1817 // constraints and sizers
1818 // ----------------------------------------------------------------------------
1819
1820 #if wxUSE_CONSTRAINTS
1821
1822 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1823 {
1824     if ( m_constraints )
1825     {
1826         UnsetConstraints(m_constraints);
1827         delete m_constraints;
1828     }
1829     m_constraints = constraints;
1830     if ( m_constraints )
1831     {
1832         // Make sure other windows know they're part of a 'meaningful relationship'
1833         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1834             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1835         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1836             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1837         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1838             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1839         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1840             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1841         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1842             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1843         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1844             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1845         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1846             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1847         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1848             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1849     }
1850 }
1851
1852 // This removes any dangling pointers to this window in other windows'
1853 // constraintsInvolvedIn lists.
1854 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1855 {
1856     if ( c )
1857     {
1858         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1859             c->left.GetOtherWindow()->RemoveConstraintReference(this);
1860         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1861             c->top.GetOtherWindow()->RemoveConstraintReference(this);
1862         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1863             c->right.GetOtherWindow()->RemoveConstraintReference(this);
1864         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1865             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1866         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1867             c->width.GetOtherWindow()->RemoveConstraintReference(this);
1868         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1869             c->height.GetOtherWindow()->RemoveConstraintReference(this);
1870         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1871             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
1872         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
1873             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
1874     }
1875 }
1876
1877 // Back-pointer to other windows we're involved with, so if we delete this
1878 // window, we must delete any constraints we're involved with.
1879 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
1880 {
1881     if ( !m_constraintsInvolvedIn )
1882         m_constraintsInvolvedIn = new wxWindowList;
1883     if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
1884         m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
1885 }
1886
1887 // REMOVE back-pointer to other windows we're involved with.
1888 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
1889 {
1890     if ( m_constraintsInvolvedIn )
1891         m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
1892 }
1893
1894 // Reset any constraints that mention this window
1895 void wxWindowBase::DeleteRelatedConstraints()
1896 {
1897     if ( m_constraintsInvolvedIn )
1898     {
1899         wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
1900         while (node)
1901         {
1902             wxWindow *win = node->GetData();
1903             wxLayoutConstraints *constr = win->GetConstraints();
1904
1905             // Reset any constraints involving this window
1906             if ( constr )
1907             {
1908                 constr->left.ResetIfWin(this);
1909                 constr->top.ResetIfWin(this);
1910                 constr->right.ResetIfWin(this);
1911                 constr->bottom.ResetIfWin(this);
1912                 constr->width.ResetIfWin(this);
1913                 constr->height.ResetIfWin(this);
1914                 constr->centreX.ResetIfWin(this);
1915                 constr->centreY.ResetIfWin(this);
1916             }
1917
1918             wxWindowList::compatibility_iterator next = node->GetNext();
1919             m_constraintsInvolvedIn->Erase(node);
1920             node = next;
1921         }
1922
1923         delete m_constraintsInvolvedIn;
1924         m_constraintsInvolvedIn = (wxWindowList *) NULL;
1925     }
1926 }
1927
1928 #endif // wxUSE_CONSTRAINTS
1929
1930 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
1931 {
1932     if ( sizer == m_windowSizer)
1933         return;
1934
1935     if ( m_windowSizer )
1936     {
1937         m_windowSizer->SetContainingWindow(NULL);
1938
1939         if ( deleteOld )
1940             delete m_windowSizer;
1941     }
1942
1943     m_windowSizer = sizer;
1944     if ( m_windowSizer )
1945     {
1946         m_windowSizer->SetContainingWindow((wxWindow *)this);
1947     }
1948
1949     SetAutoLayout(m_windowSizer != NULL);
1950 }
1951
1952 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
1953 {
1954     SetSizer( sizer, deleteOld );
1955     sizer->SetSizeHints( (wxWindow*) this );
1956 }
1957
1958
1959 void wxWindowBase::SetContainingSizer(wxSizer* sizer)
1960 {
1961     // adding a window to a sizer twice is going to result in fatal and
1962     // hard to debug problems later because when deleting the second
1963     // associated wxSizerItem we're going to dereference a dangling
1964     // pointer; so try to detect this as early as possible
1965     wxASSERT_MSG( !sizer || m_containingSizer != sizer,
1966                   _T("Adding a window to the same sizer twice?") );
1967
1968     m_containingSizer = sizer;
1969 }
1970
1971 #if wxUSE_CONSTRAINTS
1972
1973 void wxWindowBase::SatisfyConstraints()
1974 {
1975     wxLayoutConstraints *constr = GetConstraints();
1976     bool wasOk = constr && constr->AreSatisfied();
1977
1978     ResetConstraints();   // Mark all constraints as unevaluated
1979
1980     int noChanges = 1;
1981
1982     // if we're a top level panel (i.e. our parent is frame/dialog), our
1983     // own constraints will never be satisfied any more unless we do it
1984     // here
1985     if ( wasOk )
1986     {
1987         while ( noChanges > 0 )
1988         {
1989             LayoutPhase1(&noChanges);
1990         }
1991     }
1992
1993     LayoutPhase2(&noChanges);
1994 }
1995
1996 #endif // wxUSE_CONSTRAINTS
1997
1998 bool wxWindowBase::Layout()
1999 {
2000     // If there is a sizer, use it instead of the constraints
2001     if ( GetSizer() )
2002     {
2003         int w = 0, h = 0;
2004         GetVirtualSize(&w, &h);
2005         GetSizer()->SetDimension( 0, 0, w, h );
2006     }
2007 #if wxUSE_CONSTRAINTS
2008     else
2009     {
2010         SatisfyConstraints(); // Find the right constraints values
2011         SetConstraintSizes(); // Recursively set the real window sizes
2012     }
2013 #endif
2014
2015     return true;
2016 }
2017
2018 #if wxUSE_CONSTRAINTS
2019
2020 // first phase of the constraints evaluation: set our own constraints
2021 bool wxWindowBase::LayoutPhase1(int *noChanges)
2022 {
2023     wxLayoutConstraints *constr = GetConstraints();
2024
2025     return !constr || constr->SatisfyConstraints(this, noChanges);
2026 }
2027
2028 // second phase: set the constraints for our children
2029 bool wxWindowBase::LayoutPhase2(int *noChanges)
2030 {
2031     *noChanges = 0;
2032
2033     // Layout children
2034     DoPhase(1);
2035
2036     // Layout grand children
2037     DoPhase(2);
2038
2039     return true;
2040 }
2041
2042 // Do a phase of evaluating child constraints
2043 bool wxWindowBase::DoPhase(int phase)
2044 {
2045     // the list containing the children for which the constraints are already
2046     // set correctly
2047     wxWindowList succeeded;
2048
2049     // the max number of iterations we loop before concluding that we can't set
2050     // the constraints
2051     static const int maxIterations = 500;
2052
2053     for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
2054     {
2055         int noChanges = 0;
2056
2057         // loop over all children setting their constraints
2058         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2059               node;
2060               node = node->GetNext() )
2061         {
2062             wxWindow *child = node->GetData();
2063             if ( child->IsTopLevel() )
2064             {
2065                 // top level children are not inside our client area
2066                 continue;
2067             }
2068
2069             if ( !child->GetConstraints() || succeeded.Find(child) )
2070             {
2071                 // this one is either already ok or nothing we can do about it
2072                 continue;
2073             }
2074
2075             int tempNoChanges = 0;
2076             bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
2077                                       : child->LayoutPhase2(&tempNoChanges);
2078             noChanges += tempNoChanges;
2079
2080             if ( success )
2081             {
2082                 succeeded.Append(child);
2083             }
2084         }
2085
2086         if ( !noChanges )
2087         {
2088             // constraints are set
2089             break;
2090         }
2091     }
2092
2093     return true;
2094 }
2095
2096 void wxWindowBase::ResetConstraints()
2097 {
2098     wxLayoutConstraints *constr = GetConstraints();
2099     if ( constr )
2100     {
2101         constr->left.SetDone(false);
2102         constr->top.SetDone(false);
2103         constr->right.SetDone(false);
2104         constr->bottom.SetDone(false);
2105         constr->width.SetDone(false);
2106         constr->height.SetDone(false);
2107         constr->centreX.SetDone(false);
2108         constr->centreY.SetDone(false);
2109     }
2110
2111     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2112     while (node)
2113     {
2114         wxWindow *win = node->GetData();
2115         if ( !win->IsTopLevel() )
2116             win->ResetConstraints();
2117         node = node->GetNext();
2118     }
2119 }
2120
2121 // Need to distinguish between setting the 'fake' size for windows and sizers,
2122 // and setting the real values.
2123 void wxWindowBase::SetConstraintSizes(bool recurse)
2124 {
2125     wxLayoutConstraints *constr = GetConstraints();
2126     if ( constr && constr->AreSatisfied() )
2127     {
2128         int x = constr->left.GetValue();
2129         int y = constr->top.GetValue();
2130         int w = constr->width.GetValue();
2131         int h = constr->height.GetValue();
2132
2133         if ( (constr->width.GetRelationship() != wxAsIs ) ||
2134              (constr->height.GetRelationship() != wxAsIs) )
2135         {
2136             SetSize(x, y, w, h);
2137         }
2138         else
2139         {
2140             // If we don't want to resize this window, just move it...
2141             Move(x, y);
2142         }
2143     }
2144     else if ( constr )
2145     {
2146         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
2147                    GetClassInfo()->GetClassName(),
2148                    GetName().c_str());
2149     }
2150
2151     if ( recurse )
2152     {
2153         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2154         while (node)
2155         {
2156             wxWindow *win = node->GetData();
2157             if ( !win->IsTopLevel() && win->GetConstraints() )
2158                 win->SetConstraintSizes();
2159             node = node->GetNext();
2160         }
2161     }
2162 }
2163
2164 // Only set the size/position of the constraint (if any)
2165 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
2166 {
2167     wxLayoutConstraints *constr = GetConstraints();
2168     if ( constr )
2169     {
2170         if ( x != wxDefaultCoord )
2171         {
2172             constr->left.SetValue(x);
2173             constr->left.SetDone(true);
2174         }
2175         if ( y != wxDefaultCoord )
2176         {
2177             constr->top.SetValue(y);
2178             constr->top.SetDone(true);
2179         }
2180         if ( w != wxDefaultCoord )
2181         {
2182             constr->width.SetValue(w);
2183             constr->width.SetDone(true);
2184         }
2185         if ( h != wxDefaultCoord )
2186         {
2187             constr->height.SetValue(h);
2188             constr->height.SetDone(true);
2189         }
2190     }
2191 }
2192
2193 void wxWindowBase::MoveConstraint(int x, int y)
2194 {
2195     wxLayoutConstraints *constr = GetConstraints();
2196     if ( constr )
2197     {
2198         if ( x != wxDefaultCoord )
2199         {
2200             constr->left.SetValue(x);
2201             constr->left.SetDone(true);
2202         }
2203         if ( y != wxDefaultCoord )
2204         {
2205             constr->top.SetValue(y);
2206             constr->top.SetDone(true);
2207         }
2208     }
2209 }
2210
2211 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
2212 {
2213     wxLayoutConstraints *constr = GetConstraints();
2214     if ( constr )
2215     {
2216         *w = constr->width.GetValue();
2217         *h = constr->height.GetValue();
2218     }
2219     else
2220         GetSize(w, h);
2221 }
2222
2223 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
2224 {
2225     wxLayoutConstraints *constr = GetConstraints();
2226     if ( constr )
2227     {
2228         *w = constr->width.GetValue();
2229         *h = constr->height.GetValue();
2230     }
2231     else
2232         GetClientSize(w, h);
2233 }
2234
2235 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
2236 {
2237     wxLayoutConstraints *constr = GetConstraints();
2238     if ( constr )
2239     {
2240         *x = constr->left.GetValue();
2241         *y = constr->top.GetValue();
2242     }
2243     else
2244         GetPosition(x, y);
2245 }
2246
2247 #endif // wxUSE_CONSTRAINTS
2248
2249 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
2250 {
2251     // don't do it for the dialogs/frames - they float independently of their
2252     // parent
2253     if ( !IsTopLevel() )
2254     {
2255         wxWindow *parent = GetParent();
2256         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
2257         {
2258             wxPoint pt(parent->GetClientAreaOrigin());
2259             x += pt.x;
2260             y += pt.y;
2261         }
2262     }
2263 }
2264
2265 // ----------------------------------------------------------------------------
2266 // Update UI processing
2267 // ----------------------------------------------------------------------------
2268
2269 void wxWindowBase::UpdateWindowUI(long flags)
2270 {
2271     wxUpdateUIEvent event(GetId());
2272     event.SetEventObject(this);
2273
2274     if ( GetEventHandler()->ProcessEvent(event) )
2275     {
2276         DoUpdateWindowUI(event);
2277     }
2278
2279     if (flags & wxUPDATE_UI_RECURSE)
2280     {
2281         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2282         while (node)
2283         {
2284             wxWindow* child = (wxWindow*) node->GetData();
2285             child->UpdateWindowUI(flags);
2286             node = node->GetNext();
2287         }
2288     }
2289 }
2290
2291 // do the window-specific processing after processing the update event
2292 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
2293 {
2294     if ( event.GetSetEnabled() )
2295         Enable(event.GetEnabled());
2296
2297     if ( event.GetSetShown() )
2298         Show(event.GetShown());
2299 }
2300
2301 // ----------------------------------------------------------------------------
2302 // dialog units translations
2303 // ----------------------------------------------------------------------------
2304
2305 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
2306 {
2307     int charWidth = GetCharWidth();
2308     int charHeight = GetCharHeight();
2309     wxPoint pt2 = wxDefaultPosition;
2310     if (pt.x != wxDefaultCoord)
2311         pt2.x = (int) ((pt.x * 4) / charWidth);
2312     if (pt.y != wxDefaultCoord)
2313         pt2.y = (int) ((pt.y * 8) / charHeight);
2314
2315     return pt2;
2316 }
2317
2318 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
2319 {
2320     int charWidth = GetCharWidth();
2321     int charHeight = GetCharHeight();
2322     wxPoint pt2 = wxDefaultPosition;
2323     if (pt.x != wxDefaultCoord)
2324         pt2.x = (int) ((pt.x * charWidth) / 4);
2325     if (pt.y != wxDefaultCoord)
2326         pt2.y = (int) ((pt.y * charHeight) / 8);
2327
2328     return pt2;
2329 }
2330
2331 // ----------------------------------------------------------------------------
2332 // event handlers
2333 // ----------------------------------------------------------------------------
2334
2335 // propagate the colour change event to the subwindows
2336 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
2337 {
2338     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2339     while ( node )
2340     {
2341         // Only propagate to non-top-level windows
2342         wxWindow *win = node->GetData();
2343         if ( !win->IsTopLevel() )
2344         {
2345             wxSysColourChangedEvent event2;
2346             event.SetEventObject(win);
2347             win->GetEventHandler()->ProcessEvent(event2);
2348         }
2349
2350         node = node->GetNext();
2351     }
2352
2353     Refresh();
2354 }
2355
2356 // the default action is to populate dialog with data when it's created,
2357 // and nudge the UI into displaying itself correctly in case
2358 // we've turned the wxUpdateUIEvents frequency down low.
2359 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
2360 {
2361     TransferDataToWindow();
2362
2363     // Update the UI at this point
2364     UpdateWindowUI(wxUPDATE_UI_RECURSE);
2365 }
2366
2367 // ----------------------------------------------------------------------------
2368 // menu-related functions
2369 // ----------------------------------------------------------------------------
2370
2371 #if wxUSE_MENUS
2372
2373 bool wxWindowBase::PopupMenu(wxMenu *menu, int x, int y)
2374 {
2375     wxCHECK_MSG( menu, false, "can't popup NULL menu" );
2376
2377     wxCurrentPopupMenu = menu;
2378     const bool rc = DoPopupMenu(menu, x, y);
2379     wxCurrentPopupMenu = NULL;
2380
2381     return rc;
2382 }
2383
2384 // this is used to pass the id of the selected item from the menu event handler
2385 // to the main function itself
2386 //
2387 // it's ok to use a global here as there can be at most one popup menu shown at
2388 // any time
2389 static int gs_popupMenuSelection = wxID_NONE;
2390
2391 void wxWindowBase::InternalOnPopupMenu(wxCommandEvent& event)
2392 {
2393     // store the id in a global variable where we'll retrieve it from later
2394     gs_popupMenuSelection = event.GetId();
2395 }
2396
2397 int
2398 wxWindowBase::DoGetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y)
2399 {
2400     gs_popupMenuSelection = wxID_NONE;
2401
2402     Connect(wxEVT_COMMAND_MENU_SELECTED,
2403             wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2404             NULL,
2405             this);
2406
2407     PopupMenu(&menu, x, y);
2408
2409     Disconnect(wxEVT_COMMAND_MENU_SELECTED,
2410                wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2411                NULL,
2412                this);
2413
2414     return gs_popupMenuSelection;
2415 }
2416
2417 #endif // wxUSE_MENUS
2418
2419 // methods for drawing the sizers in a visible way
2420 #ifdef __WXDEBUG__
2421
2422 static void DrawSizers(wxWindowBase *win);
2423
2424 static void DrawBorder(wxWindowBase *win, const wxRect& rect, bool fill = false)
2425 {
2426     wxClientDC dc((wxWindow *)win);
2427     dc.SetPen(*wxRED_PEN);
2428     dc.SetBrush(fill ? wxBrush(*wxRED, wxBRUSHSTYLE_CROSSDIAG_HATCH) : *wxTRANSPARENT_BRUSH);
2429     dc.DrawRectangle(rect.Deflate(1, 1));
2430 }
2431
2432 static void DrawSizer(wxWindowBase *win, wxSizer *sizer)
2433 {
2434     const wxSizerItemList& items = sizer->GetChildren();
2435     for ( wxSizerItemList::const_iterator i = items.begin(),
2436                                         end = items.end();
2437           i != end;
2438           ++i )
2439     {
2440         wxSizerItem *item = *i;
2441         if ( item->IsSizer() )
2442         {
2443             DrawBorder(win, item->GetRect().Deflate(2));
2444             DrawSizer(win, item->GetSizer());
2445         }
2446         else if ( item->IsSpacer() )
2447         {
2448             DrawBorder(win, item->GetRect().Deflate(2), true);
2449         }
2450         else if ( item->IsWindow() )
2451         {
2452             DrawSizers(item->GetWindow());
2453         }
2454     }
2455 }
2456
2457 static void DrawSizers(wxWindowBase *win)
2458 {
2459     wxSizer *sizer = win->GetSizer();
2460     if ( sizer )
2461     {
2462         DrawBorder(win, win->GetClientSize());
2463         DrawSizer(win, sizer);
2464     }
2465     else // no sizer, still recurse into the children
2466     {
2467         const wxWindowList& children = win->GetChildren();
2468         for ( wxWindowList::const_iterator i = children.begin(),
2469                                          end = children.end();
2470               i != end;
2471               ++i )
2472         {
2473             DrawSizers(*i);
2474         }
2475     }
2476 }
2477
2478 #endif // __WXDEBUG__
2479
2480 // process special middle clicks
2481 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
2482 {
2483     if ( event.ControlDown() && event.AltDown() )
2484     {
2485 #ifdef __WXDEBUG__
2486         // Ctrl-Alt-Shift-mclick makes the sizers visible in debug builds
2487         if ( event.ShiftDown() )
2488         {
2489             DrawSizers(this);
2490             return;
2491         }
2492 #endif // __WXDEBUG__
2493         ::wxInfoMessageBox((wxWindow*)this);
2494     }
2495     else
2496     {
2497         event.Skip();
2498     }
2499 }
2500
2501 // ----------------------------------------------------------------------------
2502 // accessibility
2503 // ----------------------------------------------------------------------------
2504
2505 #if wxUSE_ACCESSIBILITY
2506 void wxWindowBase::SetAccessible(wxAccessible* accessible)
2507 {
2508     if (m_accessible && (accessible != m_accessible))
2509         delete m_accessible;
2510     m_accessible = accessible;
2511     if (m_accessible)
2512         m_accessible->SetWindow((wxWindow*) this);
2513 }
2514
2515 // Returns the accessible object, creating if necessary.
2516 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2517 {
2518     if (!m_accessible)
2519         m_accessible = CreateAccessible();
2520     return m_accessible;
2521 }
2522
2523 // Override to create a specific accessible object.
2524 wxAccessible* wxWindowBase::CreateAccessible()
2525 {
2526     return new wxWindowAccessible((wxWindow*) this);
2527 }
2528
2529 #endif
2530
2531 // ----------------------------------------------------------------------------
2532 // list classes implementation
2533 // ----------------------------------------------------------------------------
2534
2535 #if wxUSE_STL
2536
2537 #include "wx/listimpl.cpp"
2538 WX_DEFINE_LIST(wxWindowList)
2539
2540 #else // !wxUSE_STL
2541
2542 void wxWindowListNode::DeleteData()
2543 {
2544     delete (wxWindow *)GetData();
2545 }
2546
2547 #endif // wxUSE_STL/!wxUSE_STL
2548
2549 // ----------------------------------------------------------------------------
2550 // borders
2551 // ----------------------------------------------------------------------------
2552
2553 wxBorder wxWindowBase::GetBorder(long flags) const
2554 {
2555     wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2556     if ( border == wxBORDER_DEFAULT )
2557     {
2558         border = GetDefaultBorder();
2559     }
2560     else if ( border == wxBORDER_THEME )
2561     {
2562         border = GetDefaultBorderForControl();
2563     }
2564
2565     return border;
2566 }
2567
2568 wxBorder wxWindowBase::GetDefaultBorder() const
2569 {
2570     return wxBORDER_NONE;
2571 }
2572
2573 // ----------------------------------------------------------------------------
2574 // hit testing
2575 // ----------------------------------------------------------------------------
2576
2577 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2578 {
2579     // here we just check if the point is inside the window or not
2580
2581     // check the top and left border first
2582     bool outside = x < 0 || y < 0;
2583     if ( !outside )
2584     {
2585         // check the right and bottom borders too
2586         wxSize size = GetSize();
2587         outside = x >= size.x || y >= size.y;
2588     }
2589
2590     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2591 }
2592
2593 // ----------------------------------------------------------------------------
2594 // mouse capture
2595 // ----------------------------------------------------------------------------
2596
2597 struct WXDLLEXPORT wxWindowNext
2598 {
2599     wxWindow *win;
2600     wxWindowNext *next;
2601 } *wxWindowBase::ms_winCaptureNext = NULL;
2602 wxWindow *wxWindowBase::ms_winCaptureCurrent = NULL;
2603 bool wxWindowBase::ms_winCaptureChanging = false;
2604
2605 void wxWindowBase::CaptureMouse()
2606 {
2607     wxLogTrace(_T("mousecapture"), _T("CaptureMouse(%p)"), wx_static_cast(void*, this));
2608
2609     wxASSERT_MSG( !ms_winCaptureChanging, _T("recursive CaptureMouse call?") );
2610
2611     ms_winCaptureChanging = true;
2612
2613     wxWindow *winOld = GetCapture();
2614     if ( winOld )
2615     {
2616         ((wxWindowBase*) winOld)->DoReleaseMouse();
2617
2618         // save it on stack
2619         wxWindowNext *item = new wxWindowNext;
2620         item->win = winOld;
2621         item->next = ms_winCaptureNext;
2622         ms_winCaptureNext = item;
2623     }
2624     //else: no mouse capture to save
2625
2626     DoCaptureMouse();
2627     ms_winCaptureCurrent = (wxWindow*)this;
2628
2629     ms_winCaptureChanging = false;
2630 }
2631
2632 void wxWindowBase::ReleaseMouse()
2633 {
2634     wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(%p)"), wx_static_cast(void*, this));
2635
2636     wxASSERT_MSG( !ms_winCaptureChanging, _T("recursive ReleaseMouse call?") );
2637
2638     wxASSERT_MSG( GetCapture() == this, wxT("attempt to release mouse, but this window hasn't captured it") );
2639
2640     ms_winCaptureChanging = true;
2641
2642     DoReleaseMouse();
2643     ms_winCaptureCurrent = NULL;
2644
2645     if ( ms_winCaptureNext )
2646     {
2647         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2648         ms_winCaptureCurrent = ms_winCaptureNext->win;
2649
2650         wxWindowNext *item = ms_winCaptureNext;
2651         ms_winCaptureNext = item->next;
2652         delete item;
2653     }
2654     //else: stack is empty, no previous capture
2655
2656     ms_winCaptureChanging = false;
2657
2658     wxLogTrace(_T("mousecapture"),
2659         (const wxChar *) _T("After ReleaseMouse() mouse is captured by %p"),
2660         wx_static_cast(void*, GetCapture()));
2661 }
2662
2663 static void DoNotifyWindowAboutCaptureLost(wxWindow *win)
2664 {
2665     wxMouseCaptureLostEvent event(win->GetId());
2666     event.SetEventObject(win);
2667     if ( !win->GetEventHandler()->ProcessEvent(event) )
2668     {
2669         // windows must handle this event, otherwise the app wouldn't behave
2670         // correctly if it loses capture unexpectedly; see the discussion here:
2671         // http://sourceforge.net/tracker/index.php?func=detail&aid=1153662&group_id=9863&atid=109863
2672         // http://article.gmane.org/gmane.comp.lib.wxwidgets.devel/82376
2673         wxFAIL_MSG( _T("window that captured the mouse didn't process wxEVT_MOUSE_CAPTURE_LOST") );
2674     }
2675 }
2676
2677 /* static */
2678 void wxWindowBase::NotifyCaptureLost()
2679 {
2680     // don't do anything if capture lost was expected, i.e. resulted from
2681     // a wx call to ReleaseMouse or CaptureMouse:
2682     if ( ms_winCaptureChanging )
2683         return;
2684
2685     // if the capture was lost unexpectedly, notify every window that has
2686     // capture (on stack or current) about it and clear the stack:
2687
2688     if ( ms_winCaptureCurrent )
2689     {
2690         DoNotifyWindowAboutCaptureLost(ms_winCaptureCurrent);
2691         ms_winCaptureCurrent = NULL;
2692     }
2693
2694     while ( ms_winCaptureNext )
2695     {
2696         wxWindowNext *item = ms_winCaptureNext;
2697         ms_winCaptureNext = item->next;
2698
2699         DoNotifyWindowAboutCaptureLost(item->win);
2700
2701         delete item;
2702     }
2703 }
2704
2705 #if wxUSE_HOTKEY
2706
2707 bool
2708 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2709                              int WXUNUSED(modifiers),
2710                              int WXUNUSED(keycode))
2711 {
2712     // not implemented
2713     return false;
2714 }
2715
2716 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2717 {
2718     // not implemented
2719     return false;
2720 }
2721
2722 #endif // wxUSE_HOTKEY
2723
2724 // ----------------------------------------------------------------------------
2725 // event processing
2726 // ----------------------------------------------------------------------------
2727
2728 bool wxWindowBase::TryValidator(wxEvent& wxVALIDATOR_PARAM(event))
2729 {
2730 #if wxUSE_VALIDATORS
2731     // Can only use the validator of the window which
2732     // is receiving the event
2733     if ( event.GetEventObject() == this )
2734     {
2735         wxValidator *validator = GetValidator();
2736         if ( validator && validator->ProcessEvent(event) )
2737         {
2738             return true;
2739         }
2740     }
2741 #endif // wxUSE_VALIDATORS
2742
2743     return false;
2744 }
2745
2746 bool wxWindowBase::TryParent(wxEvent& event)
2747 {
2748     // carry on up the parent-child hierarchy if the propagation count hasn't
2749     // reached zero yet
2750     if ( event.ShouldPropagate() )
2751     {
2752         // honour the requests to stop propagation at this window: this is
2753         // used by the dialogs, for example, to prevent processing the events
2754         // from the dialog controls in the parent frame which rarely, if ever,
2755         // makes sense
2756         if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
2757         {
2758             wxWindow *parent = GetParent();
2759             if ( parent && !parent->IsBeingDeleted() )
2760             {
2761                 wxPropagateOnce propagateOnce(event);
2762
2763                 return parent->GetEventHandler()->ProcessEvent(event);
2764             }
2765         }
2766     }
2767
2768     return wxEvtHandler::TryParent(event);
2769 }
2770
2771 // ----------------------------------------------------------------------------
2772 // window relationships
2773 // ----------------------------------------------------------------------------
2774
2775 wxWindow *wxWindowBase::DoGetSibling(WindowOrder order) const
2776 {
2777     wxCHECK_MSG( GetParent(), NULL,
2778                     _T("GetPrev/NextSibling() don't work for TLWs!") );
2779
2780     wxWindowList& siblings = GetParent()->GetChildren();
2781     wxWindowList::compatibility_iterator i = siblings.Find((wxWindow *)this);
2782     wxCHECK_MSG( i, NULL, _T("window not a child of its parent?") );
2783
2784     if ( order == OrderBefore )
2785         i = i->GetPrevious();
2786     else // OrderAfter
2787         i = i->GetNext();
2788
2789     return i ? i->GetData() : NULL;
2790 }
2791
2792 // ----------------------------------------------------------------------------
2793 // keyboard navigation
2794 // ----------------------------------------------------------------------------
2795
2796 // Navigates in the specified direction inside this window
2797 bool wxWindowBase::DoNavigateIn(int flags)
2798 {
2799 #ifdef wxHAS_NATIVE_TAB_TRAVERSAL
2800     // native code doesn't process our wxNavigationKeyEvents anyhow
2801     wxUnusedVar(flags);
2802     return false;
2803 #else // !wxHAS_NATIVE_TAB_TRAVERSAL
2804     wxNavigationKeyEvent eventNav;
2805     wxWindow *focused = FindFocus();
2806     eventNav.SetCurrentFocus(focused);
2807     eventNav.SetEventObject(focused);
2808     eventNav.SetFlags(flags);
2809     return GetEventHandler()->ProcessEvent(eventNav);
2810 #endif // wxHAS_NATIVE_TAB_TRAVERSAL/!wxHAS_NATIVE_TAB_TRAVERSAL
2811 }
2812
2813 bool wxWindowBase::HandleAsNavigationKey(const wxKeyEvent& event)
2814 {
2815     if ( event.GetKeyCode() != WXK_TAB )
2816         return false;
2817
2818     int flags = wxNavigationKeyEvent::FromTab;
2819
2820     if ( event.ShiftDown() )
2821         flags |= wxNavigationKeyEvent::IsBackward;
2822     else
2823         flags |= wxNavigationKeyEvent::IsForward;
2824
2825     if ( event.ControlDown() )
2826         flags |= wxNavigationKeyEvent::WinChange;
2827
2828     Navigate(flags);
2829     return true;
2830 }
2831
2832 void wxWindowBase::DoMoveInTabOrder(wxWindow *win, WindowOrder move)
2833 {
2834     // check that we're not a top level window
2835     wxCHECK_RET( GetParent(),
2836                     _T("MoveBefore/AfterInTabOrder() don't work for TLWs!") );
2837
2838     // detect the special case when we have nothing to do anyhow and when the
2839     // code below wouldn't work
2840     if ( win == this )
2841         return;
2842
2843     // find the target window in the siblings list
2844     wxWindowList& siblings = GetParent()->GetChildren();
2845     wxWindowList::compatibility_iterator i = siblings.Find(win);
2846     wxCHECK_RET( i, _T("MoveBefore/AfterInTabOrder(): win is not a sibling") );
2847
2848     // unfortunately, when wxUSE_STL == 1 DetachNode() is not implemented so we
2849     // can't just move the node around
2850     wxWindow *self = (wxWindow *)this;
2851     siblings.DeleteObject(self);
2852     if ( move == OrderAfter )
2853     {
2854         i = i->GetNext();
2855     }
2856
2857     if ( i )
2858     {
2859         siblings.Insert(i, self);
2860     }
2861     else // OrderAfter and win was the last sibling
2862     {
2863         siblings.Append(self);
2864     }
2865 }
2866
2867 // ----------------------------------------------------------------------------
2868 // focus handling
2869 // ----------------------------------------------------------------------------
2870
2871 /*static*/ wxWindow* wxWindowBase::FindFocus()
2872 {
2873     wxWindowBase *win = DoFindFocus();
2874     return win ? win->GetMainWindowOfCompositeControl() : NULL;
2875 }
2876
2877 bool wxWindowBase::HasFocus() const
2878 {
2879     wxWindowBase *win = DoFindFocus();
2880     return win == this ||
2881            win == wxConstCast(this, wxWindowBase)->GetMainWindowOfCompositeControl();
2882 }
2883
2884 // ----------------------------------------------------------------------------
2885 // global functions
2886 // ----------------------------------------------------------------------------
2887
2888 wxWindow* wxGetTopLevelParent(wxWindow *win)
2889 {
2890     while ( win && !win->IsTopLevel() )
2891          win = win->GetParent();
2892
2893     return win;
2894 }
2895
2896 #if wxUSE_ACCESSIBILITY
2897 // ----------------------------------------------------------------------------
2898 // accessible object for windows
2899 // ----------------------------------------------------------------------------
2900
2901 // Can return either a child object, or an integer
2902 // representing the child element, starting from 1.
2903 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
2904 {
2905     wxASSERT( GetWindow() != NULL );
2906     if (!GetWindow())
2907         return wxACC_FAIL;
2908
2909     return wxACC_NOT_IMPLEMENTED;
2910 }
2911
2912 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
2913 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
2914 {
2915     wxASSERT( GetWindow() != NULL );
2916     if (!GetWindow())
2917         return wxACC_FAIL;
2918
2919     wxWindow* win = NULL;
2920     if (elementId == 0)
2921     {
2922         win = GetWindow();
2923     }
2924     else
2925     {
2926         if (elementId <= (int) GetWindow()->GetChildren().GetCount())
2927         {
2928             win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
2929         }
2930         else
2931             return wxACC_FAIL;
2932     }
2933     if (win)
2934     {
2935         rect = win->GetRect();
2936         if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
2937             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
2938         return wxACC_OK;
2939     }
2940
2941     return wxACC_NOT_IMPLEMENTED;
2942 }
2943
2944 // Navigates from fromId to toId/toObject.
2945 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
2946                              int* WXUNUSED(toId), wxAccessible** toObject)
2947 {
2948     wxASSERT( GetWindow() != NULL );
2949     if (!GetWindow())
2950         return wxACC_FAIL;
2951
2952     switch (navDir)
2953     {
2954     case wxNAVDIR_FIRSTCHILD:
2955         {
2956             if (GetWindow()->GetChildren().GetCount() == 0)
2957                 return wxACC_FALSE;
2958             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
2959             *toObject = childWindow->GetOrCreateAccessible();
2960
2961             return wxACC_OK;
2962         }
2963     case wxNAVDIR_LASTCHILD:
2964         {
2965             if (GetWindow()->GetChildren().GetCount() == 0)
2966                 return wxACC_FALSE;
2967             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
2968             *toObject = childWindow->GetOrCreateAccessible();
2969
2970             return wxACC_OK;
2971         }
2972     case wxNAVDIR_RIGHT:
2973     case wxNAVDIR_DOWN:
2974     case wxNAVDIR_NEXT:
2975         {
2976             wxWindowList::compatibility_iterator node =
2977                 wxWindowList::compatibility_iterator();
2978             if (fromId == 0)
2979             {
2980                 // Can't navigate to sibling of this window
2981                 // if we're a top-level window.
2982                 if (!GetWindow()->GetParent())
2983                     return wxACC_NOT_IMPLEMENTED;
2984
2985                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2986             }
2987             else
2988             {
2989                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2990                     node = GetWindow()->GetChildren().Item(fromId-1);
2991             }
2992
2993             if (node && node->GetNext())
2994             {
2995                 wxWindow* nextWindow = node->GetNext()->GetData();
2996                 *toObject = nextWindow->GetOrCreateAccessible();
2997                 return wxACC_OK;
2998             }
2999             else
3000                 return wxACC_FALSE;
3001         }
3002     case wxNAVDIR_LEFT:
3003     case wxNAVDIR_UP:
3004     case wxNAVDIR_PREVIOUS:
3005         {
3006             wxWindowList::compatibility_iterator node =
3007                 wxWindowList::compatibility_iterator();
3008             if (fromId == 0)
3009             {
3010                 // Can't navigate to sibling of this window
3011                 // if we're a top-level window.
3012                 if (!GetWindow()->GetParent())
3013                     return wxACC_NOT_IMPLEMENTED;
3014
3015                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
3016             }
3017             else
3018             {
3019                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
3020                     node = GetWindow()->GetChildren().Item(fromId-1);
3021             }
3022
3023             if (node && node->GetPrevious())
3024             {
3025                 wxWindow* previousWindow = node->GetPrevious()->GetData();
3026                 *toObject = previousWindow->GetOrCreateAccessible();
3027                 return wxACC_OK;
3028             }
3029             else
3030                 return wxACC_FALSE;
3031         }
3032     }
3033
3034     return wxACC_NOT_IMPLEMENTED;
3035 }
3036
3037 // Gets the name of the specified object.
3038 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
3039 {
3040     wxASSERT( GetWindow() != NULL );
3041     if (!GetWindow())
3042         return wxACC_FAIL;
3043
3044     wxString title;
3045
3046     // If a child, leave wxWidgets to call the function on the actual
3047     // child object.
3048     if (childId > 0)
3049         return wxACC_NOT_IMPLEMENTED;
3050
3051     // This will eventually be replaced by specialised
3052     // accessible classes, one for each kind of wxWidgets
3053     // control or window.
3054 #if wxUSE_BUTTON
3055     if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
3056         title = ((wxButton*) GetWindow())->GetLabel();
3057     else
3058 #endif
3059         title = GetWindow()->GetName();
3060
3061     if (!title.empty())
3062     {
3063         *name = title;
3064         return wxACC_OK;
3065     }
3066     else
3067         return wxACC_NOT_IMPLEMENTED;
3068 }
3069
3070 // Gets the number of children.
3071 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
3072 {
3073     wxASSERT( GetWindow() != NULL );
3074     if (!GetWindow())
3075         return wxACC_FAIL;
3076
3077     *childId = (int) GetWindow()->GetChildren().GetCount();
3078     return wxACC_OK;
3079 }
3080
3081 // Gets the specified child (starting from 1).
3082 // If *child is NULL and return value is wxACC_OK,
3083 // this means that the child is a simple element and
3084 // not an accessible object.
3085 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
3086 {
3087     wxASSERT( GetWindow() != NULL );
3088     if (!GetWindow())
3089         return wxACC_FAIL;
3090
3091     if (childId == 0)
3092     {
3093         *child = this;
3094         return wxACC_OK;
3095     }
3096
3097     if (childId > (int) GetWindow()->GetChildren().GetCount())
3098         return wxACC_FAIL;
3099
3100     wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
3101     *child = childWindow->GetOrCreateAccessible();
3102     if (*child)
3103         return wxACC_OK;
3104     else
3105         return wxACC_FAIL;
3106 }
3107
3108 // Gets the parent, or NULL.
3109 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
3110 {
3111     wxASSERT( GetWindow() != NULL );
3112     if (!GetWindow())
3113         return wxACC_FAIL;
3114
3115     wxWindow* parentWindow = GetWindow()->GetParent();
3116     if (!parentWindow)
3117     {
3118         *parent = NULL;
3119         return wxACC_OK;
3120     }
3121     else
3122     {
3123         *parent = parentWindow->GetOrCreateAccessible();
3124         if (*parent)
3125             return wxACC_OK;
3126         else
3127             return wxACC_FAIL;
3128     }
3129 }
3130
3131 // Performs the default action. childId is 0 (the action for this object)
3132 // or > 0 (the action for a child).
3133 // Return wxACC_NOT_SUPPORTED if there is no default action for this
3134 // window (e.g. an edit control).
3135 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
3136 {
3137     wxASSERT( GetWindow() != NULL );
3138     if (!GetWindow())
3139         return wxACC_FAIL;
3140
3141     return wxACC_NOT_IMPLEMENTED;
3142 }
3143
3144 // Gets the default action for this object (0) or > 0 (the action for a child).
3145 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
3146 // string if there is no action.
3147 // The retrieved string describes the action that is performed on an object,
3148 // not what the object does as a result. For example, a toolbar button that prints
3149 // a document has a default action of "Press" rather than "Prints the current document."
3150 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
3151 {
3152     wxASSERT( GetWindow() != NULL );
3153     if (!GetWindow())
3154         return wxACC_FAIL;
3155
3156     return wxACC_NOT_IMPLEMENTED;
3157 }
3158
3159 // Returns the description for this object or a child.
3160 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
3161 {
3162     wxASSERT( GetWindow() != NULL );
3163     if (!GetWindow())
3164         return wxACC_FAIL;
3165
3166     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3167     if (!ht.empty())
3168     {
3169         *description = ht;
3170         return wxACC_OK;
3171     }
3172     return wxACC_NOT_IMPLEMENTED;
3173 }
3174
3175 // Returns help text for this object or a child, similar to tooltip text.
3176 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
3177 {
3178     wxASSERT( GetWindow() != NULL );
3179     if (!GetWindow())
3180         return wxACC_FAIL;
3181
3182     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3183     if (!ht.empty())
3184     {
3185         *helpText = ht;
3186         return wxACC_OK;
3187     }
3188     return wxACC_NOT_IMPLEMENTED;
3189 }
3190
3191 // Returns the keyboard shortcut for this object or child.
3192 // Return e.g. ALT+K
3193 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
3194 {
3195     wxASSERT( GetWindow() != NULL );
3196     if (!GetWindow())
3197         return wxACC_FAIL;
3198
3199     return wxACC_NOT_IMPLEMENTED;
3200 }
3201
3202 // Returns a role constant.
3203 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
3204 {
3205     wxASSERT( GetWindow() != NULL );
3206     if (!GetWindow())
3207         return wxACC_FAIL;
3208
3209     // If a child, leave wxWidgets to call the function on the actual
3210     // child object.
3211     if (childId > 0)
3212         return wxACC_NOT_IMPLEMENTED;
3213
3214     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3215         return wxACC_NOT_IMPLEMENTED;
3216 #if wxUSE_STATUSBAR
3217     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3218         return wxACC_NOT_IMPLEMENTED;
3219 #endif
3220 #if wxUSE_TOOLBAR
3221     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3222         return wxACC_NOT_IMPLEMENTED;
3223 #endif
3224
3225     //*role = wxROLE_SYSTEM_CLIENT;
3226     *role = wxROLE_SYSTEM_CLIENT;
3227     return wxACC_OK;
3228
3229     #if 0
3230     return wxACC_NOT_IMPLEMENTED;
3231     #endif
3232 }
3233
3234 // Returns a state constant.
3235 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
3236 {
3237     wxASSERT( GetWindow() != NULL );
3238     if (!GetWindow())
3239         return wxACC_FAIL;
3240
3241     // If a child, leave wxWidgets to call the function on the actual
3242     // child object.
3243     if (childId > 0)
3244         return wxACC_NOT_IMPLEMENTED;
3245
3246     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3247         return wxACC_NOT_IMPLEMENTED;
3248
3249 #if wxUSE_STATUSBAR
3250     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3251         return wxACC_NOT_IMPLEMENTED;
3252 #endif
3253 #if wxUSE_TOOLBAR
3254     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3255         return wxACC_NOT_IMPLEMENTED;
3256 #endif
3257
3258     *state = 0;
3259     return wxACC_OK;
3260
3261     #if 0
3262     return wxACC_NOT_IMPLEMENTED;
3263     #endif
3264 }
3265
3266 // Returns a localized string representing the value for the object
3267 // or child.
3268 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
3269 {
3270     wxASSERT( GetWindow() != NULL );
3271     if (!GetWindow())
3272         return wxACC_FAIL;
3273
3274     return wxACC_NOT_IMPLEMENTED;
3275 }
3276
3277 // Selects the object or child.
3278 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
3279 {
3280     wxASSERT( GetWindow() != NULL );
3281     if (!GetWindow())
3282         return wxACC_FAIL;
3283
3284     return wxACC_NOT_IMPLEMENTED;
3285 }
3286
3287 // Gets the window with the keyboard focus.
3288 // If childId is 0 and child is NULL, no object in
3289 // this subhierarchy has the focus.
3290 // If this object has the focus, child should be 'this'.
3291 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
3292 {
3293     wxASSERT( GetWindow() != NULL );
3294     if (!GetWindow())
3295         return wxACC_FAIL;
3296
3297     return wxACC_NOT_IMPLEMENTED;
3298 }
3299
3300 #if wxUSE_VARIANT
3301 // Gets a variant representing the selected children
3302 // of this object.
3303 // Acceptable values:
3304 // - a null variant (IsNull() returns true)
3305 // - a list variant (GetType() == wxT("list")
3306 // - an integer representing the selected child element,
3307 //   or 0 if this object is selected (GetType() == wxT("long")
3308 // - a "void*" pointer to a wxAccessible child object
3309 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
3310 {
3311     wxASSERT( GetWindow() != NULL );
3312     if (!GetWindow())
3313         return wxACC_FAIL;
3314
3315     return wxACC_NOT_IMPLEMENTED;
3316 }
3317 #endif // wxUSE_VARIANT
3318
3319 #endif // wxUSE_ACCESSIBILITY
3320
3321 // ----------------------------------------------------------------------------
3322 // RTL support
3323 // ----------------------------------------------------------------------------
3324
3325 wxCoord
3326 wxWindowBase::AdjustForLayoutDirection(wxCoord x,
3327                                        wxCoord width,
3328                                        wxCoord widthTotal) const
3329 {
3330     if ( GetLayoutDirection() == wxLayout_RightToLeft )
3331     {
3332         x = widthTotal - x - width;
3333     }
3334
3335     return x;
3336 }
3337
3338