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 GetEventHandler()->ProcessEvent(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 // ----------------------------------------------------------------------------
 845 // show/hide/enable/disable the window
 846 // ----------------------------------------------------------------------------
 847
 848 bool wxWindowBase::Show(bool show)
 849 {
 850     if ( show != m_isShown )
 851     {
 852         m_isShown = show;
 853
 854         return true;
 855     }
 856     else
 857     {
 858         return false;
 859     }
 860 }
 861
 862 bool wxWindowBase::IsEnabled() const
 863 {
 864     return IsThisEnabled() && (IsTopLevel() || !GetParent() || GetParent()->IsEnabled());
 865 }
 866
 867 void wxWindowBase::NotifyWindowOnEnableChange(bool enabled)
 868 {
 869 #ifndef wxHAS_NATIVE_ENABLED_MANAGEMENT
 870     DoEnable(enabled);
 871 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 872
 873     OnEnabled(enabled);
 874
 875     // If we are top-level then the logic doesn't apply - otherwise
 876     // showing a modal dialog would result in total greying out (and ungreying
 877     // out later) of everything which would be really ugly
 878     if ( IsTopLevel() )
 879         return;
 880
 881     for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 882           node;
 883           node = node->GetNext() )
 884     {
 885         wxWindowBase * const child = node->GetData();
 886         if ( !child->IsTopLevel() && child->IsThisEnabled() )
 887             child->NotifyWindowOnEnableChange(enabled);
 888     }
 889 }
 890
 891 bool wxWindowBase::Enable(bool enable)
 892 {
 893     if ( enable == IsThisEnabled() )
 894         return false;
 895
 896     m_isEnabled = enable;
 897
 898 #ifdef wxHAS_NATIVE_ENABLED_MANAGEMENT
 899     DoEnable(enable);
 900 #else // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 901     wxWindowBase * const parent = GetParent();
 902     if( !IsTopLevel() && parent && !parent->IsEnabled() )
 903     {
 904         return true;
 905     }
 906 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 907
 908     NotifyWindowOnEnableChange(enable);
 909
 910     return true;
 911 }
 912
 913 bool wxWindowBase::IsShownOnScreen() const
 914 {
 915     // A window is shown on screen if it itself is shown and so are all its
 916     // parents. But if a window is toplevel one, then its always visible on
 917     // screen if IsShown() returns true, even if it has a hidden parent.
 918     return IsShown() &&
 919            (IsTopLevel() || GetParent() == NULL || GetParent()->IsShownOnScreen());
 920 }
 921
 922 // ----------------------------------------------------------------------------
 923 // RTTI
 924 // ----------------------------------------------------------------------------
 925
 926 bool wxWindowBase::IsTopLevel() const
 927 {
 928     return false;
 929 }
 930
 931 // ----------------------------------------------------------------------------
 932 // reparenting the window
 933 // ----------------------------------------------------------------------------
 934
 935 void wxWindowBase::AddChild(wxWindowBase *child)
 936 {
 937     wxCHECK_RET( child, wxT("can't add a NULL child") );
 938
 939     // this should never happen and it will lead to a crash later if it does
 940     // because RemoveChild() will remove only one node from the children list
 941     // and the other(s) one(s) will be left with dangling pointers in them
 942     wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), _T("AddChild() called twice") );
 943
 944     GetChildren().Append((wxWindow*)child);
 945     child->SetParent(this);
 946 }
 947
 948 void wxWindowBase::RemoveChild(wxWindowBase *child)
 949 {
 950     wxCHECK_RET( child, wxT("can't remove a NULL child") );
 951
 952     GetChildren().DeleteObject((wxWindow *)child);
 953     child->SetParent(NULL);
 954 }
 955
 956 bool wxWindowBase::Reparent(wxWindowBase *newParent)
 957 {
 958     wxWindow *oldParent = GetParent();
 959     if ( newParent == oldParent )
 960     {
 961         // nothing done
 962         return false;
 963     }
 964
 965     const bool oldEnabledState = IsEnabled();
 966
 967     // unlink this window from the existing parent.
 968     if ( oldParent )
 969     {
 970         oldParent->RemoveChild(this);
 971     }
 972     else
 973     {
 974         wxTopLevelWindows.DeleteObject((wxWindow *)this);
 975     }
 976
 977     // add it to the new one
 978     if ( newParent )
 979     {
 980         newParent->AddChild(this);
 981     }
 982     else
 983     {
 984         wxTopLevelWindows.Append((wxWindow *)this);
 985     }
 986
 987     // We need to notify window (and its subwindows) if by changing the parent
 988     // we also change our enabled/disabled status.
 989     const bool newEnabledState = IsEnabled();
 990     if ( newEnabledState != oldEnabledState )
 991     {
 992         NotifyWindowOnEnableChange(newEnabledState);
 993     }
 994
 995     return true;
 996 }
 997
 998 // ----------------------------------------------------------------------------
 999 // event handler stuff
1000 // ----------------------------------------------------------------------------
1001
1002 void wxWindowBase::PushEventHandler(wxEvtHandler *handler)
1003 {
1004     wxEvtHandler *handlerOld = GetEventHandler();
1005
1006     handler->SetNextHandler(handlerOld);
1007
1008     if ( handlerOld )
1009         GetEventHandler()->SetPreviousHandler(handler);
1010
1011     SetEventHandler(handler);
1012 }
1013
1014 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
1015 {
1016     wxEvtHandler *handlerA = GetEventHandler();
1017     if ( handlerA )
1018     {
1019         wxEvtHandler *handlerB = handlerA->GetNextHandler();
1020         handlerA->SetNextHandler((wxEvtHandler *)NULL);
1021
1022         if ( handlerB )
1023             handlerB->SetPreviousHandler((wxEvtHandler *)NULL);
1024         SetEventHandler(handlerB);
1025
1026         if ( deleteHandler )
1027         {
1028             delete handlerA;
1029             handlerA = (wxEvtHandler *)NULL;
1030         }
1031     }
1032
1033     return handlerA;
1034 }
1035
1036 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handler)
1037 {
1038     wxCHECK_MSG( handler, false, _T("RemoveEventHandler(NULL) called") );
1039
1040     wxEvtHandler *handlerPrev = NULL,
1041                  *handlerCur = GetEventHandler();
1042     while ( handlerCur )
1043     {
1044         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
1045
1046         if ( handlerCur == handler )
1047         {
1048             if ( handlerPrev )
1049             {
1050                 handlerPrev->SetNextHandler(handlerNext);
1051             }
1052             else
1053             {
1054                 SetEventHandler(handlerNext);
1055             }
1056
1057             if ( handlerNext )
1058             {
1059                 handlerNext->SetPreviousHandler ( handlerPrev );
1060             }
1061
1062             handler->SetNextHandler(NULL);
1063             handler->SetPreviousHandler(NULL);
1064
1065             return true;
1066         }
1067
1068         handlerPrev = handlerCur;
1069         handlerCur = handlerNext;
1070     }
1071
1072     wxFAIL_MSG( _T("where has the event handler gone?") );
1073
1074     return false;
1075 }
1076
1077 bool wxWindowBase::HandleWindowEvent(wxEvent& event) const
1078 {
1079     return GetEventHandler()->SafelyProcessEvent(event);
1080 }
1081
1082 // ----------------------------------------------------------------------------
1083 // colours, fonts &c
1084 // ----------------------------------------------------------------------------
1085
1086 void wxWindowBase::InheritAttributes()
1087 {
1088     const wxWindowBase * const parent = GetParent();
1089     if ( !parent )
1090         return;
1091
1092     // we only inherit attributes which had been explicitly set for the parent
1093     // which ensures that this only happens if the user really wants it and
1094     // not by default which wouldn't make any sense in modern GUIs where the
1095     // controls don't all use the same fonts (nor colours)
1096     if ( parent->m_inheritFont && !m_hasFont )
1097         SetFont(parent->GetFont());
1098
1099     // in addition, there is a possibility to explicitly forbid inheriting
1100     // colours at each class level by overriding ShouldInheritColours()
1101     if ( ShouldInheritColours() )
1102     {
1103         if ( parent->m_inheritFgCol && !m_hasFgCol )
1104             SetForegroundColour(parent->GetForegroundColour());
1105
1106         // inheriting (solid) background colour is wrong as it totally breaks
1107         // any kind of themed backgrounds
1108         //
1109         // instead, the controls should use the same background as their parent
1110         // (ideally by not drawing it at all)
1111 #if 0
1112         if ( parent->m_inheritBgCol && !m_hasBgCol )
1113             SetBackgroundColour(parent->GetBackgroundColour());
1114 #endif // 0
1115     }
1116 }
1117
1118 /* static */ wxVisualAttributes
1119 wxWindowBase::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1120 {
1121     // it is important to return valid values for all attributes from here,
1122     // GetXXX() below rely on this
1123     wxVisualAttributes attrs;
1124     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
1125     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
1126
1127     // On Smartphone/PocketPC, wxSYS_COLOUR_WINDOW is a better reflection of
1128     // the usual background colour than wxSYS_COLOUR_BTNFACE.
1129     // It's a pity that wxSYS_COLOUR_WINDOW isn't always a suitable background
1130     // colour on other platforms.
1131
1132 #if defined(__WXWINCE__) && (defined(__SMARTPHONE__) || defined(__POCKETPC__))
1133     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1134 #else
1135     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
1136 #endif
1137     return attrs;
1138 }
1139
1140 wxColour wxWindowBase::GetBackgroundColour() const
1141 {
1142     if ( !m_backgroundColour.IsOk() )
1143     {
1144         wxASSERT_MSG( !m_hasBgCol, _T("we have invalid explicit bg colour?") );
1145
1146         // get our default background colour
1147         wxColour colBg = GetDefaultAttributes().colBg;
1148
1149         // we must return some valid colour to avoid redoing this every time
1150         // and also to avoid surprizing the applications written for older
1151         // wxWidgets versions where GetBackgroundColour() always returned
1152         // something -- so give them something even if it doesn't make sense
1153         // for this window (e.g. it has a themed background)
1154         if ( !colBg.Ok() )
1155             colBg = GetClassDefaultAttributes().colBg;
1156
1157         return colBg;
1158     }
1159     else
1160         return m_backgroundColour;
1161 }
1162
1163 wxColour wxWindowBase::GetForegroundColour() const
1164 {
1165     // logic is the same as above
1166     if ( !m_hasFgCol && !m_foregroundColour.Ok() )
1167     {
1168         wxColour colFg = GetDefaultAttributes().colFg;
1169
1170         if ( !colFg.IsOk() )
1171             colFg = GetClassDefaultAttributes().colFg;
1172
1173         return colFg;
1174     }
1175     else
1176         return m_foregroundColour;
1177 }
1178
1179 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
1180 {
1181     if ( colour == m_backgroundColour )
1182         return false;
1183
1184     m_hasBgCol = colour.IsOk();
1185     if ( m_backgroundStyle != wxBG_STYLE_CUSTOM )
1186         m_backgroundStyle = m_hasBgCol ? wxBG_STYLE_COLOUR : wxBG_STYLE_SYSTEM;
1187
1188     m_inheritBgCol = m_hasBgCol;
1189     m_backgroundColour = colour;
1190     SetThemeEnabled( !m_hasBgCol && !m_foregroundColour.Ok() );
1191     return true;
1192 }
1193
1194 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
1195 {
1196     if (colour == m_foregroundColour )
1197         return false;
1198
1199     m_hasFgCol = colour.IsOk();
1200     m_inheritFgCol = m_hasFgCol;
1201     m_foregroundColour = colour;
1202     SetThemeEnabled( !m_hasFgCol && !m_backgroundColour.Ok() );
1203     return true;
1204 }
1205
1206 bool wxWindowBase::SetCursor(const wxCursor& cursor)
1207 {
1208     // setting an invalid cursor is ok, it means that we don't have any special
1209     // cursor
1210     if ( m_cursor.IsSameAs(cursor) )
1211     {
1212         // no change
1213         return false;
1214     }
1215
1216     m_cursor = cursor;
1217
1218     return true;
1219 }
1220
1221 wxFont wxWindowBase::GetFont() const
1222 {
1223     // logic is the same as in GetBackgroundColour()
1224     if ( !m_font.IsOk() )
1225     {
1226         wxASSERT_MSG( !m_hasFont, _T("we have invalid explicit font?") );
1227
1228         wxFont font = GetDefaultAttributes().font;
1229         if ( !font.IsOk() )
1230             font = GetClassDefaultAttributes().font;
1231
1232         return font;
1233     }
1234     else
1235         return m_font;
1236 }
1237
1238 bool wxWindowBase::SetFont(const wxFont& font)
1239 {
1240     if ( font == m_font )
1241     {
1242         // no change
1243         return false;
1244     }
1245
1246     m_font = font;
1247     m_hasFont = font.IsOk();
1248     m_inheritFont = m_hasFont;
1249
1250     InvalidateBestSize();
1251
1252     return true;
1253 }
1254
1255 #if wxUSE_PALETTE
1256
1257 void wxWindowBase::SetPalette(const wxPalette& pal)
1258 {
1259     m_hasCustomPalette = true;
1260     m_palette = pal;
1261
1262     // VZ: can anyone explain me what do we do here?
1263     wxWindowDC d((wxWindow *) this);
1264     d.SetPalette(pal);
1265 }
1266
1267 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
1268 {
1269     wxWindow *win = (wxWindow *)this;
1270     while ( win && !win->HasCustomPalette() )
1271     {
1272         win = win->GetParent();
1273     }
1274
1275     return win;
1276 }
1277
1278 #endif // wxUSE_PALETTE
1279
1280 #if wxUSE_CARET
1281 void wxWindowBase::SetCaret(wxCaret *caret)
1282 {
1283     if ( m_caret )
1284     {
1285         delete m_caret;
1286     }
1287
1288     m_caret = caret;
1289
1290     if ( m_caret )
1291     {
1292         wxASSERT_MSG( m_caret->GetWindow() == this,
1293                       wxT("caret should be created associated to this window") );
1294     }
1295 }
1296 #endif // wxUSE_CARET
1297
1298 #if wxUSE_VALIDATORS
1299 // ----------------------------------------------------------------------------
1300 // validators
1301 // ----------------------------------------------------------------------------
1302
1303 void wxWindowBase::SetValidator(const wxValidator& validator)
1304 {
1305     if ( m_windowValidator )
1306         delete m_windowValidator;
1307
1308     m_windowValidator = (wxValidator *)validator.Clone();
1309
1310     if ( m_windowValidator )
1311         m_windowValidator->SetWindow(this);
1312 }
1313 #endif // wxUSE_VALIDATORS
1314
1315 // ----------------------------------------------------------------------------
1316 // update region stuff
1317 // ----------------------------------------------------------------------------
1318
1319 wxRect wxWindowBase::GetUpdateClientRect() const
1320 {
1321     wxRegion rgnUpdate = GetUpdateRegion();
1322     rgnUpdate.Intersect(GetClientRect());
1323     wxRect rectUpdate = rgnUpdate.GetBox();
1324     wxPoint ptOrigin = GetClientAreaOrigin();
1325     rectUpdate.x -= ptOrigin.x;
1326     rectUpdate.y -= ptOrigin.y;
1327
1328     return rectUpdate;
1329 }
1330
1331 bool wxWindowBase::DoIsExposed(int x, int y) const
1332 {
1333     return m_updateRegion.Contains(x, y) != wxOutRegion;
1334 }
1335
1336 bool wxWindowBase::DoIsExposed(int x, int y, int w, int h) const
1337 {
1338     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
1339 }
1340
1341 void wxWindowBase::ClearBackground()
1342 {
1343     // wxGTK uses its own version, no need to add never used code
1344 #ifndef __WXGTK__
1345     wxClientDC dc((wxWindow *)this);
1346     wxBrush brush(GetBackgroundColour(), wxSOLID);
1347     dc.SetBackground(brush);
1348     dc.Clear();
1349 #endif // __WXGTK__
1350 }
1351
1352 // ----------------------------------------------------------------------------
1353 // find child window by id or name
1354 // ----------------------------------------------------------------------------
1355
1356 wxWindow *wxWindowBase::FindWindow(long id) const
1357 {
1358     if ( id == m_windowId )
1359         return (wxWindow *)this;
1360
1361     wxWindowBase *res = (wxWindow *)NULL;
1362     wxWindowList::compatibility_iterator node;
1363     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1364     {
1365         wxWindowBase *child = node->GetData();
1366         res = child->FindWindow( id );
1367     }
1368
1369     return (wxWindow *)res;
1370 }
1371
1372 wxWindow *wxWindowBase::FindWindow(const wxString& name) const
1373 {
1374     if ( name == m_windowName )
1375         return (wxWindow *)this;
1376
1377     wxWindowBase *res = (wxWindow *)NULL;
1378     wxWindowList::compatibility_iterator node;
1379     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1380     {
1381         wxWindow *child = node->GetData();
1382         res = child->FindWindow(name);
1383     }
1384
1385     return (wxWindow *)res;
1386 }
1387
1388
1389 // find any window by id or name or label: If parent is non-NULL, look through
1390 // children for a label or title matching the specified string. If NULL, look
1391 // through all top-level windows.
1392 //
1393 // to avoid duplicating code we reuse the same helper function but with
1394 // different comparators
1395
1396 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1397                                 const wxString& label, long id);
1398
1399 static
1400 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1401                            long WXUNUSED(id))
1402 {
1403     return win->GetLabel() == label;
1404 }
1405
1406 static
1407 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1408                           long WXUNUSED(id))
1409 {
1410     return win->GetName() == label;
1411 }
1412
1413 static
1414 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1415                         long id)
1416 {
1417     return win->GetId() == id;
1418 }
1419
1420 // recursive helper for the FindWindowByXXX() functions
1421 static
1422 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1423                                   const wxString& label,
1424                                   long id,
1425                                   wxFindWindowCmp cmp)
1426 {
1427     if ( parent )
1428     {
1429         // see if this is the one we're looking for
1430         if ( (*cmp)(parent, label, id) )
1431             return (wxWindow *)parent;
1432
1433         // It wasn't, so check all its children
1434         for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
1435               node;
1436               node = node->GetNext() )
1437         {
1438             // recursively check each child
1439             wxWindow *win = (wxWindow *)node->GetData();
1440             wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1441             if (retwin)
1442                 return retwin;
1443         }
1444     }
1445
1446     // Not found
1447     return NULL;
1448 }
1449
1450 // helper for FindWindowByXXX()
1451 static
1452 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1453                              const wxString& label,
1454                              long id,
1455                              wxFindWindowCmp cmp)
1456 {
1457     if ( parent )
1458     {
1459         // just check parent and all its children
1460         return wxFindWindowRecursively(parent, label, id, cmp);
1461     }
1462
1463     // start at very top of wx's windows
1464     for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1465           node;
1466           node = node->GetNext() )
1467     {
1468         // recursively check each window & its children
1469         wxWindow *win = node->GetData();
1470         wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1471         if (retwin)
1472             return retwin;
1473     }
1474
1475     return NULL;
1476 }
1477
1478 /* static */
1479 wxWindow *
1480 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1481 {
1482     return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1483 }
1484
1485 /* static */
1486 wxWindow *
1487 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1488 {
1489     wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1490
1491     if ( !win )
1492     {
1493         // fall back to the label
1494         win = FindWindowByLabel(title, parent);
1495     }
1496
1497     return win;
1498 }
1499
1500 /* static */
1501 wxWindow *
1502 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1503 {
1504     return wxFindWindowHelper(parent, wxEmptyString, id, wxFindWindowCmpIds);
1505 }
1506
1507 // ----------------------------------------------------------------------------
1508 // dialog oriented functions
1509 // ----------------------------------------------------------------------------
1510
1511 void wxWindowBase::MakeModal(bool modal)
1512 {
1513     // Disable all other windows
1514     if ( IsTopLevel() )
1515     {
1516         wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1517         while (node)
1518         {
1519             wxWindow *win = node->GetData();
1520             if (win != this)
1521                 win->Enable(!modal);
1522
1523             node = node->GetNext();
1524         }
1525     }
1526 }
1527
1528 bool wxWindowBase::Validate()
1529 {
1530 #if wxUSE_VALIDATORS
1531     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1532
1533     wxWindowList::compatibility_iterator node;
1534     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1535     {
1536         wxWindowBase *child = node->GetData();
1537         wxValidator *validator = child->GetValidator();
1538         if ( validator && !validator->Validate((wxWindow *)this) )
1539         {
1540             return false;
1541         }
1542
1543         if ( recurse && !child->Validate() )
1544         {
1545             return false;
1546         }
1547     }
1548 #endif // wxUSE_VALIDATORS
1549
1550     return true;
1551 }
1552
1553 bool wxWindowBase::TransferDataToWindow()
1554 {
1555 #if wxUSE_VALIDATORS
1556     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1557
1558     wxWindowList::compatibility_iterator node;
1559     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1560     {
1561         wxWindowBase *child = node->GetData();
1562         wxValidator *validator = child->GetValidator();
1563         if ( validator && !validator->TransferToWindow() )
1564         {
1565             wxLogWarning(_("Could not transfer data to window"));
1566 #if wxUSE_LOG
1567             wxLog::FlushActive();
1568 #endif // wxUSE_LOG
1569
1570             return false;
1571         }
1572
1573         if ( recurse )
1574         {
1575             if ( !child->TransferDataToWindow() )
1576             {
1577                 // warning already given
1578                 return false;
1579             }
1580         }
1581     }
1582 #endif // wxUSE_VALIDATORS
1583
1584     return true;
1585 }
1586
1587 bool wxWindowBase::TransferDataFromWindow()
1588 {
1589 #if wxUSE_VALIDATORS
1590     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1591
1592     wxWindowList::compatibility_iterator node;
1593     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1594     {
1595         wxWindow *child = node->GetData();
1596         wxValidator *validator = child->GetValidator();
1597         if ( validator && !validator->TransferFromWindow() )
1598         {
1599             // nop warning here because the application is supposed to give
1600             // one itself - we don't know here what might have gone wrongly
1601
1602             return false;
1603         }
1604
1605         if ( recurse )
1606         {
1607             if ( !child->TransferDataFromWindow() )
1608             {
1609                 // warning already given
1610                 return false;
1611             }
1612         }
1613     }
1614 #endif // wxUSE_VALIDATORS
1615
1616     return true;
1617 }
1618
1619 void wxWindowBase::InitDialog()
1620 {
1621     wxInitDialogEvent event(GetId());
1622     event.SetEventObject( this );
1623     GetEventHandler()->ProcessEvent(event);
1624 }
1625
1626 // ----------------------------------------------------------------------------
1627 // context-sensitive help support
1628 // ----------------------------------------------------------------------------
1629
1630 #if wxUSE_HELP
1631
1632 // associate this help text with this window
1633 void wxWindowBase::SetHelpText(const wxString& text)
1634 {
1635     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1636     if ( helpProvider )
1637     {
1638         helpProvider->AddHelp(this, text);
1639     }
1640 }
1641
1642 // associate this help text with all windows with the same id as this
1643 // one
1644 void wxWindowBase::SetHelpTextForId(const wxString& text)
1645 {
1646     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1647     if ( helpProvider )
1648     {
1649         helpProvider->AddHelp(GetId(), text);
1650     }
1651 }
1652
1653 // get the help string associated with this window (may be empty)
1654 // default implementation forwards calls to the help provider
1655 wxString
1656 wxWindowBase::GetHelpTextAtPoint(const wxPoint & WXUNUSED(pt),
1657                                  wxHelpEvent::Origin WXUNUSED(origin)) const
1658 {
1659     wxString text;
1660     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1661     if ( helpProvider )
1662     {
1663         text = helpProvider->GetHelp(this);
1664     }
1665
1666     return text;
1667 }
1668
1669 // show help for this window
1670 void wxWindowBase::OnHelp(wxHelpEvent& event)
1671 {
1672     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1673     if ( helpProvider )
1674     {
1675         wxPoint pos = event.GetPosition();
1676         const wxHelpEvent::Origin origin = event.GetOrigin();
1677         if ( origin == wxHelpEvent::Origin_Keyboard )
1678         {
1679             // if the help event was generated from keyboard it shouldn't
1680             // appear at the mouse position (which is still the only position
1681             // associated with help event) if the mouse is far away, although
1682             // we still do use the mouse position if it's over the window
1683             // because we suppose the user looks approximately at the mouse
1684             // already and so it would be more convenient than showing tooltip
1685             // at some arbitrary position which can be quite far from it
1686             const wxRect rectClient = GetClientRect();
1687             if ( !rectClient.Contains(ScreenToClient(pos)) )
1688             {
1689                 // position help slightly under and to the right of this window
1690                 pos = ClientToScreen(wxPoint(
1691                         2*GetCharWidth(),
1692                         rectClient.height + GetCharHeight()
1693                       ));
1694             }
1695         }
1696
1697         if ( helpProvider->ShowHelpAtPoint(this, pos, origin) )
1698         {
1699             // skip the event.Skip() below
1700             return;
1701         }
1702     }
1703
1704     event.Skip();
1705 }
1706
1707 #endif // wxUSE_HELP
1708
1709 // ----------------------------------------------------------------------------
1710 // tooltips
1711 // ----------------------------------------------------------------------------
1712
1713 #if wxUSE_TOOLTIPS
1714
1715 void wxWindowBase::SetToolTip( const wxString &tip )
1716 {
1717     // don't create the new tooltip if we already have one
1718     if ( m_tooltip )
1719     {
1720         m_tooltip->SetTip( tip );
1721     }
1722     else
1723     {
1724         SetToolTip( new wxToolTip( tip ) );
1725     }
1726
1727     // setting empty tooltip text does not remove the tooltip any more - use
1728     // SetToolTip((wxToolTip *)NULL) for this
1729 }
1730
1731 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1732 {
1733     if ( m_tooltip != tooltip )
1734     {
1735         if ( m_tooltip )
1736             delete m_tooltip;
1737
1738         m_tooltip = tooltip;
1739     }
1740 }
1741
1742 #endif // wxUSE_TOOLTIPS
1743
1744 // ----------------------------------------------------------------------------
1745 // constraints and sizers
1746 // ----------------------------------------------------------------------------
1747
1748 #if wxUSE_CONSTRAINTS
1749
1750 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1751 {
1752     if ( m_constraints )
1753     {
1754         UnsetConstraints(m_constraints);
1755         delete m_constraints;
1756     }
1757     m_constraints = constraints;
1758     if ( m_constraints )
1759     {
1760         // Make sure other windows know they're part of a 'meaningful relationship'
1761         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1762             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1763         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1764             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1765         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1766             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1767         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1768             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1769         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1770             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1771         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1772             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1773         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1774             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1775         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1776             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1777     }
1778 }
1779
1780 // This removes any dangling pointers to this window in other windows'
1781 // constraintsInvolvedIn lists.
1782 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1783 {
1784     if ( c )
1785     {
1786         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1787             c->left.GetOtherWindow()->RemoveConstraintReference(this);
1788         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1789             c->top.GetOtherWindow()->RemoveConstraintReference(this);
1790         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1791             c->right.GetOtherWindow()->RemoveConstraintReference(this);
1792         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1793             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1794         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1795             c->width.GetOtherWindow()->RemoveConstraintReference(this);
1796         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1797             c->height.GetOtherWindow()->RemoveConstraintReference(this);
1798         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1799             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
1800         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
1801             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
1802     }
1803 }
1804
1805 // Back-pointer to other windows we're involved with, so if we delete this
1806 // window, we must delete any constraints we're involved with.
1807 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
1808 {
1809     if ( !m_constraintsInvolvedIn )
1810         m_constraintsInvolvedIn = new wxWindowList;
1811     if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
1812         m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
1813 }
1814
1815 // REMOVE back-pointer to other windows we're involved with.
1816 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
1817 {
1818     if ( m_constraintsInvolvedIn )
1819         m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
1820 }
1821
1822 // Reset any constraints that mention this window
1823 void wxWindowBase::DeleteRelatedConstraints()
1824 {
1825     if ( m_constraintsInvolvedIn )
1826     {
1827         wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
1828         while (node)
1829         {
1830             wxWindow *win = node->GetData();
1831             wxLayoutConstraints *constr = win->GetConstraints();
1832
1833             // Reset any constraints involving this window
1834             if ( constr )
1835             {
1836                 constr->left.ResetIfWin(this);
1837                 constr->top.ResetIfWin(this);
1838                 constr->right.ResetIfWin(this);
1839                 constr->bottom.ResetIfWin(this);
1840                 constr->width.ResetIfWin(this);
1841                 constr->height.ResetIfWin(this);
1842                 constr->centreX.ResetIfWin(this);
1843                 constr->centreY.ResetIfWin(this);
1844             }
1845
1846             wxWindowList::compatibility_iterator next = node->GetNext();
1847             m_constraintsInvolvedIn->Erase(node);
1848             node = next;
1849         }
1850
1851         delete m_constraintsInvolvedIn;
1852         m_constraintsInvolvedIn = (wxWindowList *) NULL;
1853     }
1854 }
1855
1856 #endif // wxUSE_CONSTRAINTS
1857
1858 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
1859 {
1860     if ( sizer == m_windowSizer)
1861         return;
1862
1863     if ( m_windowSizer )
1864     {
1865         m_windowSizer->SetContainingWindow(NULL);
1866
1867         if ( deleteOld )
1868             delete m_windowSizer;
1869     }
1870
1871     m_windowSizer = sizer;
1872     if ( m_windowSizer )
1873     {
1874         m_windowSizer->SetContainingWindow((wxWindow *)this);
1875     }
1876
1877     SetAutoLayout(m_windowSizer != NULL);
1878 }
1879
1880 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
1881 {
1882     SetSizer( sizer, deleteOld );
1883     sizer->SetSizeHints( (wxWindow*) this );
1884 }
1885
1886
1887 void wxWindowBase::SetContainingSizer(wxSizer* sizer)
1888 {
1889     // adding a window to a sizer twice is going to result in fatal and
1890     // hard to debug problems later because when deleting the second
1891     // associated wxSizerItem we're going to dereference a dangling
1892     // pointer; so try to detect this as early as possible
1893     wxASSERT_MSG( !sizer || m_containingSizer != sizer,
1894                   _T("Adding a window to the same sizer twice?") );
1895
1896     m_containingSizer = sizer;
1897 }
1898
1899 #if wxUSE_CONSTRAINTS
1900
1901 void wxWindowBase::SatisfyConstraints()
1902 {
1903     wxLayoutConstraints *constr = GetConstraints();
1904     bool wasOk = constr && constr->AreSatisfied();
1905
1906     ResetConstraints();   // Mark all constraints as unevaluated
1907
1908     int noChanges = 1;
1909
1910     // if we're a top level panel (i.e. our parent is frame/dialog), our
1911     // own constraints will never be satisfied any more unless we do it
1912     // here
1913     if ( wasOk )
1914     {
1915         while ( noChanges > 0 )
1916         {
1917             LayoutPhase1(&noChanges);
1918         }
1919     }
1920
1921     LayoutPhase2(&noChanges);
1922 }
1923
1924 #endif // wxUSE_CONSTRAINTS
1925
1926 bool wxWindowBase::Layout()
1927 {
1928     // If there is a sizer, use it instead of the constraints
1929     if ( GetSizer() )
1930     {
1931         int w = 0, h = 0;
1932         GetVirtualSize(&w, &h);
1933         GetSizer()->SetDimension( 0, 0, w, h );
1934     }
1935 #if wxUSE_CONSTRAINTS
1936     else
1937     {
1938         SatisfyConstraints(); // Find the right constraints values
1939         SetConstraintSizes(); // Recursively set the real window sizes
1940     }
1941 #endif
1942
1943     return true;
1944 }
1945
1946 #if wxUSE_CONSTRAINTS
1947
1948 // first phase of the constraints evaluation: set our own constraints
1949 bool wxWindowBase::LayoutPhase1(int *noChanges)
1950 {
1951     wxLayoutConstraints *constr = GetConstraints();
1952
1953     return !constr || constr->SatisfyConstraints(this, noChanges);
1954 }
1955
1956 // second phase: set the constraints for our children
1957 bool wxWindowBase::LayoutPhase2(int *noChanges)
1958 {
1959     *noChanges = 0;
1960
1961     // Layout children
1962     DoPhase(1);
1963
1964     // Layout grand children
1965     DoPhase(2);
1966
1967     return true;
1968 }
1969
1970 // Do a phase of evaluating child constraints
1971 bool wxWindowBase::DoPhase(int phase)
1972 {
1973     // the list containing the children for which the constraints are already
1974     // set correctly
1975     wxWindowList succeeded;
1976
1977     // the max number of iterations we loop before concluding that we can't set
1978     // the constraints
1979     static const int maxIterations = 500;
1980
1981     for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
1982     {
1983         int noChanges = 0;
1984
1985         // loop over all children setting their constraints
1986         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1987               node;
1988               node = node->GetNext() )
1989         {
1990             wxWindow *child = node->GetData();
1991             if ( child->IsTopLevel() )
1992             {
1993                 // top level children are not inside our client area
1994                 continue;
1995             }
1996
1997             if ( !child->GetConstraints() || succeeded.Find(child) )
1998             {
1999                 // this one is either already ok or nothing we can do about it
2000                 continue;
2001             }
2002
2003             int tempNoChanges = 0;
2004             bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
2005                                       : child->LayoutPhase2(&tempNoChanges);
2006             noChanges += tempNoChanges;
2007
2008             if ( success )
2009             {
2010                 succeeded.Append(child);
2011             }
2012         }
2013
2014         if ( !noChanges )
2015         {
2016             // constraints are set
2017             break;
2018         }
2019     }
2020
2021     return true;
2022 }
2023
2024 void wxWindowBase::ResetConstraints()
2025 {
2026     wxLayoutConstraints *constr = GetConstraints();
2027     if ( constr )
2028     {
2029         constr->left.SetDone(false);
2030         constr->top.SetDone(false);
2031         constr->right.SetDone(false);
2032         constr->bottom.SetDone(false);
2033         constr->width.SetDone(false);
2034         constr->height.SetDone(false);
2035         constr->centreX.SetDone(false);
2036         constr->centreY.SetDone(false);
2037     }
2038
2039     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2040     while (node)
2041     {
2042         wxWindow *win = node->GetData();
2043         if ( !win->IsTopLevel() )
2044             win->ResetConstraints();
2045         node = node->GetNext();
2046     }
2047 }
2048
2049 // Need to distinguish between setting the 'fake' size for windows and sizers,
2050 // and setting the real values.
2051 void wxWindowBase::SetConstraintSizes(bool recurse)
2052 {
2053     wxLayoutConstraints *constr = GetConstraints();
2054     if ( constr && constr->AreSatisfied() )
2055     {
2056         int x = constr->left.GetValue();
2057         int y = constr->top.GetValue();
2058         int w = constr->width.GetValue();
2059         int h = constr->height.GetValue();
2060
2061         if ( (constr->width.GetRelationship() != wxAsIs ) ||
2062              (constr->height.GetRelationship() != wxAsIs) )
2063         {
2064             SetSize(x, y, w, h);
2065         }
2066         else
2067         {
2068             // If we don't want to resize this window, just move it...
2069             Move(x, y);
2070         }
2071     }
2072     else if ( constr )
2073     {
2074         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
2075                    GetClassInfo()->GetClassName(),
2076                    GetName().c_str());
2077     }
2078
2079     if ( recurse )
2080     {
2081         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2082         while (node)
2083         {
2084             wxWindow *win = node->GetData();
2085             if ( !win->IsTopLevel() && win->GetConstraints() )
2086                 win->SetConstraintSizes();
2087             node = node->GetNext();
2088         }
2089     }
2090 }
2091
2092 // Only set the size/position of the constraint (if any)
2093 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
2094 {
2095     wxLayoutConstraints *constr = GetConstraints();
2096     if ( constr )
2097     {
2098         if ( x != wxDefaultCoord )
2099         {
2100             constr->left.SetValue(x);
2101             constr->left.SetDone(true);
2102         }
2103         if ( y != wxDefaultCoord )
2104         {
2105             constr->top.SetValue(y);
2106             constr->top.SetDone(true);
2107         }
2108         if ( w != wxDefaultCoord )
2109         {
2110             constr->width.SetValue(w);
2111             constr->width.SetDone(true);
2112         }
2113         if ( h != wxDefaultCoord )
2114         {
2115             constr->height.SetValue(h);
2116             constr->height.SetDone(true);
2117         }
2118     }
2119 }
2120
2121 void wxWindowBase::MoveConstraint(int x, int y)
2122 {
2123     wxLayoutConstraints *constr = GetConstraints();
2124     if ( constr )
2125     {
2126         if ( x != wxDefaultCoord )
2127         {
2128             constr->left.SetValue(x);
2129             constr->left.SetDone(true);
2130         }
2131         if ( y != wxDefaultCoord )
2132         {
2133             constr->top.SetValue(y);
2134             constr->top.SetDone(true);
2135         }
2136     }
2137 }
2138
2139 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
2140 {
2141     wxLayoutConstraints *constr = GetConstraints();
2142     if ( constr )
2143     {
2144         *w = constr->width.GetValue();
2145         *h = constr->height.GetValue();
2146     }
2147     else
2148         GetSize(w, h);
2149 }
2150
2151 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
2152 {
2153     wxLayoutConstraints *constr = GetConstraints();
2154     if ( constr )
2155     {
2156         *w = constr->width.GetValue();
2157         *h = constr->height.GetValue();
2158     }
2159     else
2160         GetClientSize(w, h);
2161 }
2162
2163 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
2164 {
2165     wxLayoutConstraints *constr = GetConstraints();
2166     if ( constr )
2167     {
2168         *x = constr->left.GetValue();
2169         *y = constr->top.GetValue();
2170     }
2171     else
2172         GetPosition(x, y);
2173 }
2174
2175 #endif // wxUSE_CONSTRAINTS
2176
2177 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
2178 {
2179     // don't do it for the dialogs/frames - they float independently of their
2180     // parent
2181     if ( !IsTopLevel() )
2182     {
2183         wxWindow *parent = GetParent();
2184         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
2185         {
2186             wxPoint pt(parent->GetClientAreaOrigin());
2187             x += pt.x;
2188             y += pt.y;
2189         }
2190     }
2191 }
2192
2193 // ----------------------------------------------------------------------------
2194 // Update UI processing
2195 // ----------------------------------------------------------------------------
2196
2197 void wxWindowBase::UpdateWindowUI(long flags)
2198 {
2199     wxUpdateUIEvent event(GetId());
2200     event.SetEventObject(this);
2201
2202     if ( GetEventHandler()->ProcessEvent(event) )
2203     {
2204         DoUpdateWindowUI(event);
2205     }
2206
2207     if (flags & wxUPDATE_UI_RECURSE)
2208     {
2209         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2210         while (node)
2211         {
2212             wxWindow* child = (wxWindow*) node->GetData();
2213             child->UpdateWindowUI(flags);
2214             node = node->GetNext();
2215         }
2216     }
2217 }
2218
2219 // do the window-specific processing after processing the update event
2220 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
2221 {
2222     if ( event.GetSetEnabled() )
2223         Enable(event.GetEnabled());
2224
2225     if ( event.GetSetShown() )
2226         Show(event.GetShown());
2227 }
2228
2229 // ----------------------------------------------------------------------------
2230 // dialog units translations
2231 // ----------------------------------------------------------------------------
2232
2233 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
2234 {
2235     int charWidth = GetCharWidth();
2236     int charHeight = GetCharHeight();
2237     wxPoint pt2 = wxDefaultPosition;
2238     if (pt.x != wxDefaultCoord)
2239         pt2.x = (int) ((pt.x * 4) / charWidth);
2240     if (pt.y != wxDefaultCoord)
2241         pt2.y = (int) ((pt.y * 8) / charHeight);
2242
2243     return pt2;
2244 }
2245
2246 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
2247 {
2248     int charWidth = GetCharWidth();
2249     int charHeight = GetCharHeight();
2250     wxPoint pt2 = wxDefaultPosition;
2251     if (pt.x != wxDefaultCoord)
2252         pt2.x = (int) ((pt.x * charWidth) / 4);
2253     if (pt.y != wxDefaultCoord)
2254         pt2.y = (int) ((pt.y * charHeight) / 8);
2255
2256     return pt2;
2257 }
2258
2259 // ----------------------------------------------------------------------------
2260 // event handlers
2261 // ----------------------------------------------------------------------------
2262
2263 // propagate the colour change event to the subwindows
2264 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
2265 {
2266     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2267     while ( node )
2268     {
2269         // Only propagate to non-top-level windows
2270         wxWindow *win = node->GetData();
2271         if ( !win->IsTopLevel() )
2272         {
2273             wxSysColourChangedEvent event2;
2274             event.SetEventObject(win);
2275             win->GetEventHandler()->ProcessEvent(event2);
2276         }
2277
2278         node = node->GetNext();
2279     }
2280
2281     Refresh();
2282 }
2283
2284 // the default action is to populate dialog with data when it's created,
2285 // and nudge the UI into displaying itself correctly in case
2286 // we've turned the wxUpdateUIEvents frequency down low.
2287 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
2288 {
2289     TransferDataToWindow();
2290
2291     // Update the UI at this point
2292     UpdateWindowUI(wxUPDATE_UI_RECURSE);
2293 }
2294
2295 // ----------------------------------------------------------------------------
2296 // menu-related functions
2297 // ----------------------------------------------------------------------------
2298
2299 #if wxUSE_MENUS
2300
2301 bool wxWindowBase::PopupMenu(wxMenu *menu, int x, int y)
2302 {
2303     wxCHECK_MSG( menu, false, "can't popup NULL menu" );
2304
2305     wxCurrentPopupMenu = menu;
2306     const bool rc = DoPopupMenu(menu, x, y);
2307     wxCurrentPopupMenu = NULL;
2308
2309     return rc;
2310 }
2311
2312 // this is used to pass the id of the selected item from the menu event handler
2313 // to the main function itself
2314 //
2315 // it's ok to use a global here as there can be at most one popup menu shown at
2316 // any time
2317 static int gs_popupMenuSelection = wxID_NONE;
2318
2319 void wxWindowBase::InternalOnPopupMenu(wxCommandEvent& event)
2320 {
2321     // store the id in a global variable where we'll retrieve it from later
2322     gs_popupMenuSelection = event.GetId();
2323 }
2324
2325 int
2326 wxWindowBase::DoGetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y)
2327 {
2328     gs_popupMenuSelection = wxID_NONE;
2329
2330     Connect(wxEVT_COMMAND_MENU_SELECTED,
2331             wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2332             NULL,
2333             this);
2334
2335     PopupMenu(&menu, x, y);
2336
2337     Disconnect(wxEVT_COMMAND_MENU_SELECTED,
2338                wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2339                NULL,
2340                this);
2341
2342     return gs_popupMenuSelection;
2343 }
2344
2345 #endif // wxUSE_MENUS
2346
2347 // methods for drawing the sizers in a visible way
2348 #ifdef __WXDEBUG__
2349
2350 static void DrawSizers(wxWindowBase *win);
2351
2352 static void DrawBorder(wxWindowBase *win, const wxRect& rect, bool fill = false)
2353 {
2354     wxClientDC dc((wxWindow *)win);
2355     dc.SetPen(*wxRED_PEN);
2356     dc.SetBrush(fill ? wxBrush(*wxRED, wxCROSSDIAG_HATCH): *wxTRANSPARENT_BRUSH);
2357     dc.DrawRectangle(rect.Deflate(1, 1));
2358 }
2359
2360 static void DrawSizer(wxWindowBase *win, wxSizer *sizer)
2361 {
2362     const wxSizerItemList& items = sizer->GetChildren();
2363     for ( wxSizerItemList::const_iterator i = items.begin(),
2364                                         end = items.end();
2365           i != end;
2366           ++i )
2367     {
2368         wxSizerItem *item = *i;
2369         if ( item->IsSizer() )
2370         {
2371             DrawBorder(win, item->GetRect().Deflate(2));
2372             DrawSizer(win, item->GetSizer());
2373         }
2374         else if ( item->IsSpacer() )
2375         {
2376             DrawBorder(win, item->GetRect().Deflate(2), true);
2377         }
2378         else if ( item->IsWindow() )
2379         {
2380             DrawSizers(item->GetWindow());
2381         }
2382     }
2383 }
2384
2385 static void DrawSizers(wxWindowBase *win)
2386 {
2387     wxSizer *sizer = win->GetSizer();
2388     if ( sizer )
2389     {
2390         DrawBorder(win, win->GetClientSize());
2391         DrawSizer(win, sizer);
2392     }
2393     else // no sizer, still recurse into the children
2394     {
2395         const wxWindowList& children = win->GetChildren();
2396         for ( wxWindowList::const_iterator i = children.begin(),
2397                                          end = children.end();
2398               i != end;
2399               ++i )
2400         {
2401             DrawSizers(*i);
2402         }
2403     }
2404 }
2405
2406 #endif // __WXDEBUG__
2407
2408 // process special middle clicks
2409 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
2410 {
2411     if ( event.ControlDown() && event.AltDown() )
2412     {
2413 #ifdef __WXDEBUG__
2414         // Ctrl-Alt-Shift-mclick makes the sizers visible in debug builds
2415         if ( event.ShiftDown() )
2416         {
2417             DrawSizers(this);
2418             return;
2419         }
2420 #endif // __WXDEBUG__
2421         ::wxInfoMessageBox((wxWindow*)this);
2422     }
2423     else
2424     {
2425         event.Skip();
2426     }
2427 }
2428
2429 // ----------------------------------------------------------------------------
2430 // accessibility
2431 // ----------------------------------------------------------------------------
2432
2433 #if wxUSE_ACCESSIBILITY
2434 void wxWindowBase::SetAccessible(wxAccessible* accessible)
2435 {
2436     if (m_accessible && (accessible != m_accessible))
2437         delete m_accessible;
2438     m_accessible = accessible;
2439     if (m_accessible)
2440         m_accessible->SetWindow((wxWindow*) this);
2441 }
2442
2443 // Returns the accessible object, creating if necessary.
2444 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2445 {
2446     if (!m_accessible)
2447         m_accessible = CreateAccessible();
2448     return m_accessible;
2449 }
2450
2451 // Override to create a specific accessible object.
2452 wxAccessible* wxWindowBase::CreateAccessible()
2453 {
2454     return new wxWindowAccessible((wxWindow*) this);
2455 }
2456
2457 #endif
2458
2459 // ----------------------------------------------------------------------------
2460 // list classes implementation
2461 // ----------------------------------------------------------------------------
2462
2463 #if wxUSE_STL
2464
2465 #include "wx/listimpl.cpp"
2466 WX_DEFINE_LIST(wxWindowList)
2467
2468 #else // !wxUSE_STL
2469
2470 void wxWindowListNode::DeleteData()
2471 {
2472     delete (wxWindow *)GetData();
2473 }
2474
2475 #endif // wxUSE_STL/!wxUSE_STL
2476
2477 // ----------------------------------------------------------------------------
2478 // borders
2479 // ----------------------------------------------------------------------------
2480
2481 wxBorder wxWindowBase::GetBorder(long flags) const
2482 {
2483     wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2484     if ( border == wxBORDER_DEFAULT )
2485     {
2486         border = GetDefaultBorder();
2487     }
2488     else if ( border == wxBORDER_THEME )
2489     {
2490         border = GetDefaultBorderForControl();
2491     }
2492
2493     return border;
2494 }
2495
2496 wxBorder wxWindowBase::GetDefaultBorder() const
2497 {
2498     return wxBORDER_NONE;
2499 }
2500
2501 // ----------------------------------------------------------------------------
2502 // hit testing
2503 // ----------------------------------------------------------------------------
2504
2505 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2506 {
2507     // here we just check if the point is inside the window or not
2508
2509     // check the top and left border first
2510     bool outside = x < 0 || y < 0;
2511     if ( !outside )
2512     {
2513         // check the right and bottom borders too
2514         wxSize size = GetSize();
2515         outside = x >= size.x || y >= size.y;
2516     }
2517
2518     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2519 }
2520
2521 // ----------------------------------------------------------------------------
2522 // mouse capture
2523 // ----------------------------------------------------------------------------
2524
2525 struct WXDLLEXPORT wxWindowNext
2526 {
2527     wxWindow *win;
2528     wxWindowNext *next;
2529 } *wxWindowBase::ms_winCaptureNext = NULL;
2530 wxWindow *wxWindowBase::ms_winCaptureCurrent = NULL;
2531 bool wxWindowBase::ms_winCaptureChanging = false;
2532
2533 void wxWindowBase::CaptureMouse()
2534 {
2535     wxLogTrace(_T("mousecapture"), _T("CaptureMouse(%p)"), wx_static_cast(void*, this));
2536
2537     wxASSERT_MSG( !ms_winCaptureChanging, _T("recursive CaptureMouse call?") );
2538
2539     ms_winCaptureChanging = true;
2540
2541     wxWindow *winOld = GetCapture();
2542     if ( winOld )
2543     {
2544         ((wxWindowBase*) winOld)->DoReleaseMouse();
2545
2546         // save it on stack
2547         wxWindowNext *item = new wxWindowNext;
2548         item->win = winOld;
2549         item->next = ms_winCaptureNext;
2550         ms_winCaptureNext = item;
2551     }
2552     //else: no mouse capture to save
2553
2554     DoCaptureMouse();
2555     ms_winCaptureCurrent = (wxWindow*)this;
2556
2557     ms_winCaptureChanging = false;
2558 }
2559
2560 void wxWindowBase::ReleaseMouse()
2561 {
2562     wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(%p)"), wx_static_cast(void*, this));
2563
2564     wxASSERT_MSG( !ms_winCaptureChanging, _T("recursive ReleaseMouse call?") );
2565
2566     wxASSERT_MSG( GetCapture() == this, wxT("attempt to release mouse, but this window hasn't captured it") );
2567
2568     ms_winCaptureChanging = true;
2569
2570     DoReleaseMouse();
2571     ms_winCaptureCurrent = NULL;
2572
2573     if ( ms_winCaptureNext )
2574     {
2575         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2576         ms_winCaptureCurrent = ms_winCaptureNext->win;
2577
2578         wxWindowNext *item = ms_winCaptureNext;
2579         ms_winCaptureNext = item->next;
2580         delete item;
2581     }
2582     //else: stack is empty, no previous capture
2583
2584     ms_winCaptureChanging = false;
2585
2586     wxLogTrace(_T("mousecapture"),
2587         (const wxChar *) _T("After ReleaseMouse() mouse is captured by %p"),
2588         wx_static_cast(void*, GetCapture()));
2589 }
2590
2591 static void DoNotifyWindowAboutCaptureLost(wxWindow *win)
2592 {
2593     wxMouseCaptureLostEvent event(win->GetId());
2594     event.SetEventObject(win);
2595     if ( !win->GetEventHandler()->ProcessEvent(event) )
2596     {
2597         // windows must handle this event, otherwise the app wouldn't behave
2598         // correctly if it loses capture unexpectedly; see the discussion here:
2599         // http://sourceforge.net/tracker/index.php?func=detail&aid=1153662&group_id=9863&atid=109863
2600         // http://article.gmane.org/gmane.comp.lib.wxwidgets.devel/82376
2601         wxFAIL_MSG( _T("window that captured the mouse didn't process wxEVT_MOUSE_CAPTURE_LOST") );
2602     }
2603 }
2604
2605 /* static */
2606 void wxWindowBase::NotifyCaptureLost()
2607 {
2608     // don't do anything if capture lost was expected, i.e. resulted from
2609     // a wx call to ReleaseMouse or CaptureMouse:
2610     if ( ms_winCaptureChanging )
2611         return;
2612
2613     // if the capture was lost unexpectedly, notify every window that has
2614     // capture (on stack or current) about it and clear the stack:
2615
2616     if ( ms_winCaptureCurrent )
2617     {
2618         DoNotifyWindowAboutCaptureLost(ms_winCaptureCurrent);
2619         ms_winCaptureCurrent = NULL;
2620     }
2621
2622     while ( ms_winCaptureNext )
2623     {
2624         wxWindowNext *item = ms_winCaptureNext;
2625         ms_winCaptureNext = item->next;
2626
2627         DoNotifyWindowAboutCaptureLost(item->win);
2628
2629         delete item;
2630     }
2631 }
2632
2633 #if wxUSE_HOTKEY
2634
2635 bool
2636 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2637                              int WXUNUSED(modifiers),
2638                              int WXUNUSED(keycode))
2639 {
2640     // not implemented
2641     return false;
2642 }
2643
2644 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2645 {
2646     // not implemented
2647     return false;
2648 }
2649
2650 #endif // wxUSE_HOTKEY
2651
2652 // ----------------------------------------------------------------------------
2653 // event processing
2654 // ----------------------------------------------------------------------------
2655
2656 bool wxWindowBase::TryValidator(wxEvent& wxVALIDATOR_PARAM(event))
2657 {
2658 #if wxUSE_VALIDATORS
2659     // Can only use the validator of the window which
2660     // is receiving the event
2661     if ( event.GetEventObject() == this )
2662     {
2663         wxValidator *validator = GetValidator();
2664         if ( validator && validator->ProcessEvent(event) )
2665         {
2666             return true;
2667         }
2668     }
2669 #endif // wxUSE_VALIDATORS
2670
2671     return false;
2672 }
2673
2674 bool wxWindowBase::TryParent(wxEvent& event)
2675 {
2676     // carry on up the parent-child hierarchy if the propagation count hasn't
2677     // reached zero yet
2678     if ( event.ShouldPropagate() )
2679     {
2680         // honour the requests to stop propagation at this window: this is
2681         // used by the dialogs, for example, to prevent processing the events
2682         // from the dialog controls in the parent frame which rarely, if ever,
2683         // makes sense
2684         if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
2685         {
2686             wxWindow *parent = GetParent();
2687             if ( parent && !parent->IsBeingDeleted() )
2688             {
2689                 wxPropagateOnce propagateOnce(event);
2690
2691                 return parent->GetEventHandler()->ProcessEvent(event);
2692             }
2693         }
2694     }
2695
2696     return wxEvtHandler::TryParent(event);
2697 }
2698
2699 // ----------------------------------------------------------------------------
2700 // window relationships
2701 // ----------------------------------------------------------------------------
2702
2703 wxWindow *wxWindowBase::DoGetSibling(WindowOrder order) const
2704 {
2705     wxCHECK_MSG( GetParent(), NULL,
2706                     _T("GetPrev/NextSibling() don't work for TLWs!") );
2707
2708     wxWindowList& siblings = GetParent()->GetChildren();
2709     wxWindowList::compatibility_iterator i = siblings.Find((wxWindow *)this);
2710     wxCHECK_MSG( i, NULL, _T("window not a child of its parent?") );
2711
2712     if ( order == OrderBefore )
2713         i = i->GetPrevious();
2714     else // OrderAfter
2715         i = i->GetNext();
2716
2717     return i ? i->GetData() : NULL;
2718 }
2719
2720 // ----------------------------------------------------------------------------
2721 // keyboard navigation
2722 // ----------------------------------------------------------------------------
2723
2724 // Navigates in the specified direction inside this window
2725 bool wxWindowBase::DoNavigateIn(int flags)
2726 {
2727 #ifdef wxHAS_NATIVE_TAB_TRAVERSAL
2728     // native code doesn't process our wxNavigationKeyEvents anyhow
2729     wxUnusedVar(flags);
2730     return false;
2731 #else // !wxHAS_NATIVE_TAB_TRAVERSAL
2732     wxNavigationKeyEvent eventNav;
2733     wxWindow *focused = FindFocus();
2734     eventNav.SetCurrentFocus(focused);
2735     eventNav.SetEventObject(focused);
2736     eventNav.SetFlags(flags);
2737     return GetEventHandler()->ProcessEvent(eventNav);
2738 #endif // wxHAS_NATIVE_TAB_TRAVERSAL/!wxHAS_NATIVE_TAB_TRAVERSAL
2739 }
2740
2741 bool wxWindowBase::HandleAsNavigationKey(const wxKeyEvent& event)
2742 {
2743     if ( event.GetKeyCode() != WXK_TAB )
2744         return false;
2745
2746     int flags = wxNavigationKeyEvent::FromTab;
2747
2748     if ( event.ShiftDown() )
2749         flags |= wxNavigationKeyEvent::IsBackward;
2750     else
2751         flags |= wxNavigationKeyEvent::IsForward;
2752
2753     if ( event.ControlDown() )
2754         flags |= wxNavigationKeyEvent::WinChange;
2755
2756     Navigate(flags);
2757     return true;
2758 }
2759
2760 void wxWindowBase::DoMoveInTabOrder(wxWindow *win, WindowOrder move)
2761 {
2762     // check that we're not a top level window
2763     wxCHECK_RET( GetParent(),
2764                     _T("MoveBefore/AfterInTabOrder() don't work for TLWs!") );
2765
2766     // detect the special case when we have nothing to do anyhow and when the
2767     // code below wouldn't work
2768     if ( win == this )
2769         return;
2770
2771     // find the target window in the siblings list
2772     wxWindowList& siblings = GetParent()->GetChildren();
2773     wxWindowList::compatibility_iterator i = siblings.Find(win);
2774     wxCHECK_RET( i, _T("MoveBefore/AfterInTabOrder(): win is not a sibling") );
2775
2776     // unfortunately, when wxUSE_STL == 1 DetachNode() is not implemented so we
2777     // can't just move the node around
2778     wxWindow *self = (wxWindow *)this;
2779     siblings.DeleteObject(self);
2780     if ( move == OrderAfter )
2781     {
2782         i = i->GetNext();
2783     }
2784
2785     if ( i )
2786     {
2787         siblings.Insert(i, self);
2788     }
2789     else // OrderAfter and win was the last sibling
2790     {
2791         siblings.Append(self);
2792     }
2793 }
2794
2795 // ----------------------------------------------------------------------------
2796 // focus handling
2797 // ----------------------------------------------------------------------------
2798
2799 /*static*/ wxWindow* wxWindowBase::FindFocus()
2800 {
2801     wxWindowBase *win = DoFindFocus();
2802     return win ? win->GetMainWindowOfCompositeControl() : NULL;
2803 }
2804
2805 bool wxWindowBase::HasFocus() const
2806 {
2807     wxWindowBase *win = DoFindFocus();
2808     return win == this ||
2809            win == wxConstCast(this, wxWindowBase)->GetMainWindowOfCompositeControl();
2810 }
2811
2812 // ----------------------------------------------------------------------------
2813 // global functions
2814 // ----------------------------------------------------------------------------
2815
2816 wxWindow* wxGetTopLevelParent(wxWindow *win)
2817 {
2818     while ( win && !win->IsTopLevel() )
2819          win = win->GetParent();
2820
2821     return win;
2822 }
2823
2824 #if wxUSE_ACCESSIBILITY
2825 // ----------------------------------------------------------------------------
2826 // accessible object for windows
2827 // ----------------------------------------------------------------------------
2828
2829 // Can return either a child object, or an integer
2830 // representing the child element, starting from 1.
2831 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
2832 {
2833     wxASSERT( GetWindow() != NULL );
2834     if (!GetWindow())
2835         return wxACC_FAIL;
2836
2837     return wxACC_NOT_IMPLEMENTED;
2838 }
2839
2840 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
2841 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
2842 {
2843     wxASSERT( GetWindow() != NULL );
2844     if (!GetWindow())
2845         return wxACC_FAIL;
2846
2847     wxWindow* win = NULL;
2848     if (elementId == 0)
2849     {
2850         win = GetWindow();
2851     }
2852     else
2853     {
2854         if (elementId <= (int) GetWindow()->GetChildren().GetCount())
2855         {
2856             win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
2857         }
2858         else
2859             return wxACC_FAIL;
2860     }
2861     if (win)
2862     {
2863         rect = win->GetRect();
2864         if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
2865             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
2866         return wxACC_OK;
2867     }
2868
2869     return wxACC_NOT_IMPLEMENTED;
2870 }
2871
2872 // Navigates from fromId to toId/toObject.
2873 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
2874                              int* WXUNUSED(toId), wxAccessible** toObject)
2875 {
2876     wxASSERT( GetWindow() != NULL );
2877     if (!GetWindow())
2878         return wxACC_FAIL;
2879
2880     switch (navDir)
2881     {
2882     case wxNAVDIR_FIRSTCHILD:
2883         {
2884             if (GetWindow()->GetChildren().GetCount() == 0)
2885                 return wxACC_FALSE;
2886             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
2887             *toObject = childWindow->GetOrCreateAccessible();
2888
2889             return wxACC_OK;
2890         }
2891     case wxNAVDIR_LASTCHILD:
2892         {
2893             if (GetWindow()->GetChildren().GetCount() == 0)
2894                 return wxACC_FALSE;
2895             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
2896             *toObject = childWindow->GetOrCreateAccessible();
2897
2898             return wxACC_OK;
2899         }
2900     case wxNAVDIR_RIGHT:
2901     case wxNAVDIR_DOWN:
2902     case wxNAVDIR_NEXT:
2903         {
2904             wxWindowList::compatibility_iterator node =
2905                 wxWindowList::compatibility_iterator();
2906             if (fromId == 0)
2907             {
2908                 // Can't navigate to sibling of this window
2909                 // if we're a top-level window.
2910                 if (!GetWindow()->GetParent())
2911                     return wxACC_NOT_IMPLEMENTED;
2912
2913                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2914             }
2915             else
2916             {
2917                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2918                     node = GetWindow()->GetChildren().Item(fromId-1);
2919             }
2920
2921             if (node && node->GetNext())
2922             {
2923                 wxWindow* nextWindow = node->GetNext()->GetData();
2924                 *toObject = nextWindow->GetOrCreateAccessible();
2925                 return wxACC_OK;
2926             }
2927             else
2928                 return wxACC_FALSE;
2929         }
2930     case wxNAVDIR_LEFT:
2931     case wxNAVDIR_UP:
2932     case wxNAVDIR_PREVIOUS:
2933         {
2934             wxWindowList::compatibility_iterator node =
2935                 wxWindowList::compatibility_iterator();
2936             if (fromId == 0)
2937             {
2938                 // Can't navigate to sibling of this window
2939                 // if we're a top-level window.
2940                 if (!GetWindow()->GetParent())
2941                     return wxACC_NOT_IMPLEMENTED;
2942
2943                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2944             }
2945             else
2946             {
2947                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2948                     node = GetWindow()->GetChildren().Item(fromId-1);
2949             }
2950
2951             if (node && node->GetPrevious())
2952             {
2953                 wxWindow* previousWindow = node->GetPrevious()->GetData();
2954                 *toObject = previousWindow->GetOrCreateAccessible();
2955                 return wxACC_OK;
2956             }
2957             else
2958                 return wxACC_FALSE;
2959         }
2960     }
2961
2962     return wxACC_NOT_IMPLEMENTED;
2963 }
2964
2965 // Gets the name of the specified object.
2966 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
2967 {
2968     wxASSERT( GetWindow() != NULL );
2969     if (!GetWindow())
2970         return wxACC_FAIL;
2971
2972     wxString title;
2973
2974     // If a child, leave wxWidgets to call the function on the actual
2975     // child object.
2976     if (childId > 0)
2977         return wxACC_NOT_IMPLEMENTED;
2978
2979     // This will eventually be replaced by specialised
2980     // accessible classes, one for each kind of wxWidgets
2981     // control or window.
2982 #if wxUSE_BUTTON
2983     if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
2984         title = ((wxButton*) GetWindow())->GetLabel();
2985     else
2986 #endif
2987         title = GetWindow()->GetName();
2988
2989     if (!title.empty())
2990     {
2991         *name = title;
2992         return wxACC_OK;
2993     }
2994     else
2995         return wxACC_NOT_IMPLEMENTED;
2996 }
2997
2998 // Gets the number of children.
2999 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
3000 {
3001     wxASSERT( GetWindow() != NULL );
3002     if (!GetWindow())
3003         return wxACC_FAIL;
3004
3005     *childId = (int) GetWindow()->GetChildren().GetCount();
3006     return wxACC_OK;
3007 }
3008
3009 // Gets the specified child (starting from 1).
3010 // If *child is NULL and return value is wxACC_OK,
3011 // this means that the child is a simple element and
3012 // not an accessible object.
3013 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
3014 {
3015     wxASSERT( GetWindow() != NULL );
3016     if (!GetWindow())
3017         return wxACC_FAIL;
3018
3019     if (childId == 0)
3020     {
3021         *child = this;
3022         return wxACC_OK;
3023     }
3024
3025     if (childId > (int) GetWindow()->GetChildren().GetCount())
3026         return wxACC_FAIL;
3027
3028     wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
3029     *child = childWindow->GetOrCreateAccessible();
3030     if (*child)
3031         return wxACC_OK;
3032     else
3033         return wxACC_FAIL;
3034 }
3035
3036 // Gets the parent, or NULL.
3037 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
3038 {
3039     wxASSERT( GetWindow() != NULL );
3040     if (!GetWindow())
3041         return wxACC_FAIL;
3042
3043     wxWindow* parentWindow = GetWindow()->GetParent();
3044     if (!parentWindow)
3045     {
3046         *parent = NULL;
3047         return wxACC_OK;
3048     }
3049     else
3050     {
3051         *parent = parentWindow->GetOrCreateAccessible();
3052         if (*parent)
3053             return wxACC_OK;
3054         else
3055             return wxACC_FAIL;
3056     }
3057 }
3058
3059 // Performs the default action. childId is 0 (the action for this object)
3060 // or > 0 (the action for a child).
3061 // Return wxACC_NOT_SUPPORTED if there is no default action for this
3062 // window (e.g. an edit control).
3063 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
3064 {
3065     wxASSERT( GetWindow() != NULL );
3066     if (!GetWindow())
3067         return wxACC_FAIL;
3068
3069     return wxACC_NOT_IMPLEMENTED;
3070 }
3071
3072 // Gets the default action for this object (0) or > 0 (the action for a child).
3073 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
3074 // string if there is no action.
3075 // The retrieved string describes the action that is performed on an object,
3076 // not what the object does as a result. For example, a toolbar button that prints
3077 // a document has a default action of "Press" rather than "Prints the current document."
3078 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
3079 {
3080     wxASSERT( GetWindow() != NULL );
3081     if (!GetWindow())
3082         return wxACC_FAIL;
3083
3084     return wxACC_NOT_IMPLEMENTED;
3085 }
3086
3087 // Returns the description for this object or a child.
3088 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
3089 {
3090     wxASSERT( GetWindow() != NULL );
3091     if (!GetWindow())
3092         return wxACC_FAIL;
3093
3094     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3095     if (!ht.empty())
3096     {
3097         *description = ht;
3098         return wxACC_OK;
3099     }
3100     return wxACC_NOT_IMPLEMENTED;
3101 }
3102
3103 // Returns help text for this object or a child, similar to tooltip text.
3104 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
3105 {
3106     wxASSERT( GetWindow() != NULL );
3107     if (!GetWindow())
3108         return wxACC_FAIL;
3109
3110     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3111     if (!ht.empty())
3112     {
3113         *helpText = ht;
3114         return wxACC_OK;
3115     }
3116     return wxACC_NOT_IMPLEMENTED;
3117 }
3118
3119 // Returns the keyboard shortcut for this object or child.
3120 // Return e.g. ALT+K
3121 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
3122 {
3123     wxASSERT( GetWindow() != NULL );
3124     if (!GetWindow())
3125         return wxACC_FAIL;
3126
3127     return wxACC_NOT_IMPLEMENTED;
3128 }
3129
3130 // Returns a role constant.
3131 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
3132 {
3133     wxASSERT( GetWindow() != NULL );
3134     if (!GetWindow())
3135         return wxACC_FAIL;
3136
3137     // If a child, leave wxWidgets to call the function on the actual
3138     // child object.
3139     if (childId > 0)
3140         return wxACC_NOT_IMPLEMENTED;
3141
3142     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3143         return wxACC_NOT_IMPLEMENTED;
3144 #if wxUSE_STATUSBAR
3145     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3146         return wxACC_NOT_IMPLEMENTED;
3147 #endif
3148 #if wxUSE_TOOLBAR
3149     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3150         return wxACC_NOT_IMPLEMENTED;
3151 #endif
3152
3153     //*role = wxROLE_SYSTEM_CLIENT;
3154     *role = wxROLE_SYSTEM_CLIENT;
3155     return wxACC_OK;
3156
3157     #if 0
3158     return wxACC_NOT_IMPLEMENTED;
3159     #endif
3160 }
3161
3162 // Returns a state constant.
3163 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
3164 {
3165     wxASSERT( GetWindow() != NULL );
3166     if (!GetWindow())
3167         return wxACC_FAIL;
3168
3169     // If a child, leave wxWidgets to call the function on the actual
3170     // child object.
3171     if (childId > 0)
3172         return wxACC_NOT_IMPLEMENTED;
3173
3174     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3175         return wxACC_NOT_IMPLEMENTED;
3176
3177 #if wxUSE_STATUSBAR
3178     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3179         return wxACC_NOT_IMPLEMENTED;
3180 #endif
3181 #if wxUSE_TOOLBAR
3182     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3183         return wxACC_NOT_IMPLEMENTED;
3184 #endif
3185
3186     *state = 0;
3187     return wxACC_OK;
3188
3189     #if 0
3190     return wxACC_NOT_IMPLEMENTED;
3191     #endif
3192 }
3193
3194 // Returns a localized string representing the value for the object
3195 // or child.
3196 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
3197 {
3198     wxASSERT( GetWindow() != NULL );
3199     if (!GetWindow())
3200         return wxACC_FAIL;
3201
3202     return wxACC_NOT_IMPLEMENTED;
3203 }
3204
3205 // Selects the object or child.
3206 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
3207 {
3208     wxASSERT( GetWindow() != NULL );
3209     if (!GetWindow())
3210         return wxACC_FAIL;
3211
3212     return wxACC_NOT_IMPLEMENTED;
3213 }
3214
3215 // Gets the window with the keyboard focus.
3216 // If childId is 0 and child is NULL, no object in
3217 // this subhierarchy has the focus.
3218 // If this object has the focus, child should be 'this'.
3219 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
3220 {
3221     wxASSERT( GetWindow() != NULL );
3222     if (!GetWindow())
3223         return wxACC_FAIL;
3224
3225     return wxACC_NOT_IMPLEMENTED;
3226 }
3227
3228 #if wxUSE_VARIANT
3229 // Gets a variant representing the selected children
3230 // of this object.
3231 // Acceptable values:
3232 // - a null variant (IsNull() returns true)
3233 // - a list variant (GetType() == wxT("list")
3234 // - an integer representing the selected child element,
3235 //   or 0 if this object is selected (GetType() == wxT("long")
3236 // - a "void*" pointer to a wxAccessible child object
3237 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
3238 {
3239     wxASSERT( GetWindow() != NULL );
3240     if (!GetWindow())
3241         return wxACC_FAIL;
3242
3243     return wxACC_NOT_IMPLEMENTED;
3244 }
3245 #endif // wxUSE_VARIANT
3246
3247 #endif // wxUSE_ACCESSIBILITY
3248
3249 // ----------------------------------------------------------------------------
3250 // RTL support
3251 // ----------------------------------------------------------------------------
3252
3253 wxCoord
3254 wxWindowBase::AdjustForLayoutDirection(wxCoord x,
3255                                        wxCoord width,
3256                                        wxCoord widthTotal) const
3257 {
3258     if ( GetLayoutDirection() == wxLayout_RightToLeft )
3259     {
3260         x = widthTotal - x - width;
3261     }
3262
3263     return x;
3264 }
3265
3266