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