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