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