src/common/wincmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/window.cpp
   3 // Purpose:     common (to all ports) wxWindow functions
   4 // Author:      Julian Smart, Vadim Zeitlin
   5 // Modified by:
   6 // Created:     13/07/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWidgets team
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/string.h"
  29     #include "wx/log.h"
  30     #include "wx/intl.h"
  31     #include "wx/frame.h"
  32     #include "wx/window.h"
  33     #include "wx/control.h"
  34     #include "wx/checkbox.h"
  35     #include "wx/radiobut.h"
  36     #include "wx/statbox.h"
  37     #include "wx/textctrl.h"
  38     #include "wx/settings.h"
  39     #include "wx/dialog.h"
  40     #include "wx/msgdlg.h"
  41     #include "wx/statusbr.h"
  42     #include "wx/toolbar.h"
  43     #include "wx/dcclient.h"
  44     #include "wx/scrolbar.h"
  45     #include "wx/layout.h"
  46     #include "wx/sizer.h"
  47     #include "wx/menu.h"
  48 #endif //WX_PRECOMP
  49
  50 #if wxUSE_DRAG_AND_DROP
  51     #include "wx/dnd.h"
  52 #endif // wxUSE_DRAG_AND_DROP
  53
  54 #if wxUSE_ACCESSIBILITY
  55     #include "wx/access.h"
  56 #endif
  57
  58 #if wxUSE_HELP
  59     #include "wx/cshelp.h"
  60 #endif // wxUSE_HELP
  61
  62 #if wxUSE_TOOLTIPS
  63     #include "wx/tooltip.h"
  64 #endif // wxUSE_TOOLTIPS
  65
  66 #if wxUSE_CARET
  67     #include "wx/caret.h"
  68 #endif // wxUSE_CARET
  69
  70 #if wxUSE_SYSTEM_OPTIONS
  71     #include "wx/sysopt.h"
  72 #endif
  73
  74 // For reporting compile- and runtime version of GTK+ in the ctrl+alt+mclick dialog.
  75 // The gtk includes don't pull any other headers in, at least not on my system - MR
  76 #ifdef __WXGTK__
  77     #ifdef __WXGTK20__
  78         #include <gtk/gtkversion.h>
  79     #else
  80         #include <gtk/gtkfeatures.h>
  81     #endif
  82 #endif
  83
  84 #include "wx/platinfo.h"
  85
  86 // Windows List
  87 WXDLLIMPEXP_DATA_CORE(wxWindowList) wxTopLevelWindows;
  88
  89 // globals
  90 #if wxUSE_MENUS
  91 wxMenu *wxCurrentPopupMenu = NULL;
  92 #endif // wxUSE_MENUS
  93
  94 // ----------------------------------------------------------------------------
  95 // static data
  96 // ----------------------------------------------------------------------------
  97
  98
  99 IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
 100
 101 // ----------------------------------------------------------------------------
 102 // event table
 103 // ----------------------------------------------------------------------------
 104
 105 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
 106     EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
 107     EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
 108     EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
 109
 110 #if wxUSE_HELP
 111     EVT_HELP(wxID_ANY, wxWindowBase::OnHelp)
 112 #endif // wxUSE_HELP
 113
 114 END_EVENT_TABLE()
 115
 116 // ============================================================================
 117 // implementation of the common functionality of the wxWindow class
 118 // ============================================================================
 119
 120 // ----------------------------------------------------------------------------
 121 // initialization
 122 // ----------------------------------------------------------------------------
 123
 124 // the default initialization
 125 wxWindowBase::wxWindowBase()
 126 {
 127     // no window yet, no parent nor children
 128     m_parent = (wxWindow *)NULL;
 129     m_windowId = wxID_ANY;
 130
 131     // no constraints on the minimal window size
 132     m_minWidth =
 133     m_maxWidth = wxDefaultCoord;
 134     m_minHeight =
 135     m_maxHeight = wxDefaultCoord;
 136
 137     // invalidiated cache value
 138     m_bestSizeCache = wxDefaultSize;
 139
 140     // window are created enabled and visible by default
 141     m_isShown =
 142     m_isEnabled = true;
 143
 144     // the default event handler is just this window
 145     m_eventHandler = this;
 146
 147 #if wxUSE_VALIDATORS
 148     // no validator
 149     m_windowValidator = (wxValidator *) NULL;
 150 #endif // wxUSE_VALIDATORS
 151
 152     // the colours/fonts are default for now, so leave m_font,
 153     // m_backgroundColour and m_foregroundColour uninitialized and set those
 154     m_hasBgCol =
 155     m_hasFgCol =
 156     m_hasFont = false;
 157     m_inheritBgCol =
 158     m_inheritFgCol =
 159     m_inheritFont = false;
 160
 161     // no style bits
 162     m_exStyle =
 163     m_windowStyle = 0;
 164
 165     m_backgroundStyle = wxBG_STYLE_SYSTEM;
 166
 167 #if wxUSE_CONSTRAINTS
 168     // no constraints whatsoever
 169     m_constraints = (wxLayoutConstraints *) NULL;
 170     m_constraintsInvolvedIn = (wxWindowList *) NULL;
 171 #endif // wxUSE_CONSTRAINTS
 172
 173     m_windowSizer = (wxSizer *) NULL;
 174     m_containingSizer = (wxSizer *) NULL;
 175     m_autoLayout = false;
 176
 177 #if wxUSE_DRAG_AND_DROP
 178     m_dropTarget = (wxDropTarget *)NULL;
 179 #endif // wxUSE_DRAG_AND_DROP
 180
 181 #if wxUSE_TOOLTIPS
 182     m_tooltip = (wxToolTip *)NULL;
 183 #endif // wxUSE_TOOLTIPS
 184
 185 #if wxUSE_CARET
 186     m_caret = (wxCaret *)NULL;
 187 #endif // wxUSE_CARET
 188
 189 #if wxUSE_PALETTE
 190     m_hasCustomPalette = false;
 191 #endif // wxUSE_PALETTE
 192
 193 #if wxUSE_ACCESSIBILITY
 194     m_accessible = NULL;
 195 #endif
 196
 197     m_virtualSize = wxDefaultSize;
 198
 199     m_scrollHelper = (wxScrollHelper *) NULL;
 200
 201     m_windowVariant = wxWINDOW_VARIANT_NORMAL;
 202 #if wxUSE_SYSTEM_OPTIONS
 203     if ( wxSystemOptions::HasOption(wxWINDOW_DEFAULT_VARIANT) )
 204     {
 205        m_windowVariant = (wxWindowVariant) wxSystemOptions::GetOptionInt( wxWINDOW_DEFAULT_VARIANT ) ;
 206     }
 207 #endif
 208
 209     // Whether we're using the current theme for this window (wxGTK only for now)
 210     m_themeEnabled = false;
 211
 212     // VZ: this one shouldn't exist...
 213     m_isBeingDeleted = false;
 214
 215     m_freezeCount = 0;
 216 }
 217
 218 // common part of window creation process
 219 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 220                               wxWindowID id,
 221                               const wxPoint& WXUNUSED(pos),
 222                               const wxSize& WXUNUSED(size),
 223                               long style,
 224                               const wxValidator& wxVALIDATOR_PARAM(validator),
 225                               const wxString& name)
 226 {
 227 #if wxUSE_STATBOX
 228     // wxGTK doesn't allow to create controls with static box as the parent so
 229     // this will result in a crash when the program is ported to wxGTK so warn
 230     // the user about it
 231
 232     // if you get this assert, the correct solution is to create the controls
 233     // as siblings of the static box
 234     wxASSERT_MSG( !parent || !wxDynamicCast(parent, wxStaticBox),
 235                   _T("wxStaticBox can't be used as a window parent!") );
 236 #endif // wxUSE_STATBOX
 237
 238     // ids are limited to 16 bits under MSW so if you care about portability,
 239     // it's not a good idea to use ids out of this range (and negative ids are
 240     // reserved for wxWidgets own usage)
 241     wxASSERT_MSG( id == wxID_ANY || (id >= 0 && id < 32767) ||
 242                   (id >= wxID_AUTO_LOWEST && id <= wxID_AUTO_HIGHEST),
 243                   _T("invalid id value") );
 244
 245     // generate a new id if the user doesn't care about it
 246     if ( id == wxID_ANY )
 247     {
 248         m_windowId = NewControlId();
 249     }
 250     else // valid id specified
 251     {
 252         m_windowId = id;
 253     }
 254
 255     // don't use SetWindowStyleFlag() here, this function should only be called
 256     // to change the flag after creation as it tries to reflect the changes in
 257     // flags by updating the window dynamically and we don't need this here
 258     m_windowStyle = style;
 259
 260     SetName(name);
 261     SetParent(parent);
 262
 263 #if wxUSE_VALIDATORS
 264     SetValidator(validator);
 265 #endif // wxUSE_VALIDATORS
 266
 267     // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
 268     // have it too - like this it's possible to set it only in the top level
 269     // dialog/frame and all children will inherit it by defult
 270     if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
 271     {
 272         SetExtraStyle(GetExtraStyle() | wxWS_EX_VALIDATE_RECURSIVELY);
 273     }
 274
 275     return true;
 276 }
 277
 278 bool wxWindowBase::ToggleWindowStyle(int flag)
 279 {
 280     wxASSERT_MSG( flag, _T("flags with 0 value can't be toggled") );
 281
 282     bool rc;
 283     long style = GetWindowStyleFlag();
 284     if ( style & flag )
 285     {
 286         style &= ~flag;
 287         rc = false;
 288     }
 289     else // currently off
 290     {
 291         style |= flag;
 292         rc = true;
 293     }
 294
 295     SetWindowStyleFlag(style);
 296
 297     return rc;
 298 }
 299
 300 // ----------------------------------------------------------------------------
 301 // destruction
 302 // ----------------------------------------------------------------------------
 303
 304 // common clean up
 305 wxWindowBase::~wxWindowBase()
 306 {
 307     wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
 308
 309     // FIXME if these 2 cases result from programming errors in the user code
 310     //       we should probably assert here instead of silently fixing them
 311
 312     // Just in case the window has been Closed, but we're then deleting
 313     // immediately: don't leave dangling pointers.
 314     wxPendingDelete.DeleteObject(this);
 315
 316     // Just in case we've loaded a top-level window via LoadNativeDialog but
 317     // we weren't a dialog class
 318     wxTopLevelWindows.DeleteObject((wxWindow*)this);
 319
 320 #if wxUSE_MENUS
 321     // The associated popup menu can still be alive, disassociate from it in
 322     // this case
 323     if ( wxCurrentPopupMenu && wxCurrentPopupMenu->GetInvokingWindow() == this )
 324         wxCurrentPopupMenu->SetInvokingWindow(NULL);
 325 #endif // wxUSE_MENUS
 326
 327     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 328
 329     // notify the parent about this window destruction
 330     if ( m_parent )
 331         m_parent->RemoveChild(this);
 332
 333 #if wxUSE_CARET
 334     delete m_caret;
 335 #endif // wxUSE_CARET
 336
 337 #if wxUSE_VALIDATORS
 338     delete m_windowValidator;
 339 #endif // wxUSE_VALIDATORS
 340
 341 #if wxUSE_CONSTRAINTS
 342     // Have to delete constraints/sizer FIRST otherwise sizers may try to look
 343     // at deleted windows as they delete themselves.
 344     DeleteRelatedConstraints();
 345
 346     if ( m_constraints )
 347     {
 348         // This removes any dangling pointers to this window in other windows'
 349         // constraintsInvolvedIn lists.
 350         UnsetConstraints(m_constraints);
 351         delete m_constraints;
 352         m_constraints = NULL;
 353     }
 354 #endif // wxUSE_CONSTRAINTS
 355
 356     if ( m_containingSizer )
 357         m_containingSizer->Detach( (wxWindow*)this );
 358
 359     delete m_windowSizer;
 360
 361 #if wxUSE_DRAG_AND_DROP
 362     delete m_dropTarget;
 363 #endif // wxUSE_DRAG_AND_DROP
 364
 365 #if wxUSE_TOOLTIPS
 366     delete m_tooltip;
 367 #endif // wxUSE_TOOLTIPS
 368
 369 #if wxUSE_ACCESSIBILITY
 370     delete m_accessible;
 371 #endif
 372 }
 373
 374 void wxWindowBase::SendDestroyEvent()
 375 {
 376     wxWindowDestroyEvent event;
 377     event.SetEventObject(this);
 378     event.SetId(GetId());
 379     GetEventHandler()->ProcessEvent(event);
 380 }
 381
 382 bool wxWindowBase::Destroy()
 383 {
 384     delete this;
 385
 386     return true;
 387 }
 388
 389 bool wxWindowBase::Close(bool force)
 390 {
 391     wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
 392     event.SetEventObject(this);
 393     event.SetCanVeto(!force);
 394
 395     // return false if window wasn't closed because the application vetoed the
 396     // close event
 397     return GetEventHandler()->ProcessEvent(event) && !event.GetVeto();
 398 }
 399
 400 bool wxWindowBase::DestroyChildren()
 401 {
 402     wxWindowList::compatibility_iterator node;
 403     for ( ;; )
 404     {
 405         // we iterate until the list becomes empty
 406         node = GetChildren().GetFirst();
 407         if ( !node )
 408             break;
 409
 410         wxWindow *child = node->GetData();
 411
 412         // note that we really want to call delete and not ->Destroy() here
 413         // because we want to delete the child immediately, before we are
 414         // deleted, and delayed deletion would result in problems as our (top
 415         // level) child could outlive its parent
 416         delete child;
 417
 418         wxASSERT_MSG( !GetChildren().Find(child),
 419                       wxT("child didn't remove itself using RemoveChild()") );
 420     }
 421
 422     return true;
 423 }
 424
 425 // ----------------------------------------------------------------------------
 426 // size/position related methods
 427 // ----------------------------------------------------------------------------
 428
 429 // centre the window with respect to its parent in either (or both) directions
 430 void wxWindowBase::DoCentre(int dir)
 431 {
 432     wxCHECK_RET( !(dir & wxCENTRE_ON_SCREEN) && GetParent(),
 433                  _T("this method only implements centering child windows") );
 434
 435     SetSize(GetRect().CentreIn(GetParent()->GetClientSize(), dir));
 436 }
 437
 438 // fits the window around the children
 439 void wxWindowBase::Fit()
 440 {
 441     if ( !GetChildren().empty() )
 442     {
 443         SetSize(GetBestSize());
 444     }
 445     //else: do nothing if we have no children
 446 }
 447
 448 // fits virtual size (ie. scrolled area etc.) around children
 449 void wxWindowBase::FitInside()
 450 {
 451     if ( GetChildren().GetCount() > 0 )
 452     {
 453         SetVirtualSize( GetBestVirtualSize() );
 454     }
 455 }
 456
 457 // On Mac, scrollbars are explicitly children.
 458 #ifdef __WXMAC__
 459 static bool wxHasRealChildren(const wxWindowBase* win)
 460 {
 461     int realChildCount = 0;
 462
 463     for ( wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
 464           node;
 465           node = node->GetNext() )
 466     {
 467         wxWindow *win = node->GetData();
 468         if ( !win->IsTopLevel() && win->IsShown() && !win->IsKindOf(CLASSINFO(wxScrollBar)))
 469             realChildCount ++;
 470     }
 471     return (realChildCount > 0);
 472 }
 473 #endif
 474
 475 void wxWindowBase::InvalidateBestSize()
 476 {
 477     m_bestSizeCache = wxDefaultSize;
 478
 479     // parent's best size calculation may depend on its children's
 480     // as long as child window we are in is not top level window itself
 481     // (because the TLW size is never resized automatically)
 482     // so let's invalidate it as well to be safe:
 483     if (m_parent && !IsTopLevel())
 484         m_parent->InvalidateBestSize();
 485 }
 486
 487 // return the size best suited for the current window
 488 wxSize wxWindowBase::DoGetBestSize() const
 489 {
 490     wxSize best;
 491
 492     if ( m_windowSizer )
 493     {
 494         best = m_windowSizer->GetMinSize();
 495     }
 496 #if wxUSE_CONSTRAINTS
 497     else if ( m_constraints )
 498     {
 499         wxConstCast(this, wxWindowBase)->SatisfyConstraints();
 500
 501         // our minimal acceptable size is such that all our windows fit inside
 502         int maxX = 0,
 503             maxY = 0;
 504
 505         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 506               node;
 507               node = node->GetNext() )
 508         {
 509             wxLayoutConstraints *c = node->GetData()->GetConstraints();
 510             if ( !c )
 511             {
 512                 // it's not normal that we have an unconstrained child, but
 513                 // what can we do about it?
 514                 continue;
 515             }
 516
 517             int x = c->right.GetValue(),
 518                 y = c->bottom.GetValue();
 519
 520             if ( x > maxX )
 521                 maxX = x;
 522
 523             if ( y > maxY )
 524                 maxY = y;
 525
 526             // TODO: we must calculate the overlaps somehow, otherwise we
 527             //       will never return a size bigger than the current one :-(
 528         }
 529
 530         best = wxSize(maxX, maxY);
 531     }
 532 #endif // wxUSE_CONSTRAINTS
 533     else if ( !GetChildren().empty()
 534 #ifdef __WXMAC__
 535               && wxHasRealChildren(this)
 536 #endif
 537               )
 538     {
 539         // our minimal acceptable size is such that all our visible child
 540         // windows fit inside
 541         int maxX = 0,
 542             maxY = 0;
 543
 544         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 545               node;
 546               node = node->GetNext() )
 547         {
 548             wxWindow *win = node->GetData();
 549             if ( win->IsTopLevel()
 550                     || !win->IsShown()
 551 #if wxUSE_STATUSBAR
 552                         || wxDynamicCast(win, wxStatusBar)
 553 #endif // wxUSE_STATUSBAR
 554                )
 555             {
 556                 // dialogs and frames lie in different top level windows -
 557                 // don't deal with them here; as for the status bars, they
 558                 // don't lie in the client area at all
 559                 continue;
 560             }
 561
 562             int wx, wy, ww, wh;
 563             win->GetPosition(&wx, &wy);
 564
 565             // if the window hadn't been positioned yet, assume that it is in
 566             // the origin
 567             if ( wx == wxDefaultCoord )
 568                 wx = 0;
 569             if ( wy == wxDefaultCoord )
 570                 wy = 0;
 571
 572             win->GetSize(&ww, &wh);
 573             if ( wx + ww > maxX )
 574                 maxX = wx + ww;
 575             if ( wy + wh > maxY )
 576                 maxY = wy + wh;
 577         }
 578
 579         best = wxSize(maxX, maxY);
 580     }
 581     else // ! has children
 582     {
 583         // for a generic window there is no natural best size so, if the
 584         // minimal size is not set, use the current size but take care to
 585         // remember it as minimal size for the next time because our best size
 586         // should be constant: otherwise we could get into a situation when the
 587         // window is initially at some size, then expanded to a larger size and
 588         // then, when the containing window is shrunk back (because our initial
 589         // best size had been used for computing the parent min size), we can't
 590         // be shrunk back any more because our best size is now bigger
 591         wxSize size = GetMinSize();
 592         if ( !size.IsFullySpecified() )
 593         {
 594             size.SetDefaults(GetSize());
 595             wxConstCast(this, wxWindowBase)->SetMinSize(size);
 596         }
 597
 598         // return as-is, unadjusted by the client size difference.
 599         return size;
 600     }
 601
 602     // Add any difference between size and client size
 603     wxSize diff = GetSize() - GetClientSize();
 604     best.x += wxMax(0, diff.x);
 605     best.y += wxMax(0, diff.y);
 606
 607     return best;
 608 }
 609
 610 // helper of GetWindowBorderSize(): as many ports don't implement support for
 611 // wxSYS_BORDER/EDGE_X/Y metrics in their wxSystemSettings, use hard coded
 612 // fallbacks in this case
 613 static int wxGetMetricOrDefault(wxSystemMetric what)
 614 {
 615     int rc = wxSystemSettings::GetMetric(what);
 616     if ( rc == -1 )
 617     {
 618         switch ( what )
 619         {
 620             case wxSYS_BORDER_X:
 621             case wxSYS_BORDER_Y:
 622                 // 2D border is by default 1 pixel wide
 623                 rc = 1;
 624                 break;
 625
 626             case wxSYS_EDGE_X:
 627             case wxSYS_EDGE_Y:
 628                 // 3D borders are by default 2 pixels
 629                 rc = 2;
 630                 break;
 631
 632             default:
 633                 wxFAIL_MSG( _T("unexpected wxGetMetricOrDefault() argument") );
 634                 rc = 0;
 635         }
 636     }
 637
 638     return rc;
 639 }
 640
 641 wxSize wxWindowBase::GetWindowBorderSize() const
 642 {
 643     wxSize size;
 644
 645     switch ( GetBorder() )
 646     {
 647         case wxBORDER_NONE:
 648             // nothing to do, size is already (0, 0)
 649             break;
 650
 651         case wxBORDER_SIMPLE:
 652         case wxBORDER_STATIC:
 653             size.x = wxGetMetricOrDefault(wxSYS_BORDER_X);
 654             size.y = wxGetMetricOrDefault(wxSYS_BORDER_Y);
 655             break;
 656
 657         case wxBORDER_SUNKEN:
 658         case wxBORDER_RAISED:
 659             size.x = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_X),
 660                            wxGetMetricOrDefault(wxSYS_BORDER_X));
 661             size.y = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_Y),
 662                            wxGetMetricOrDefault(wxSYS_BORDER_Y));
 663             break;
 664
 665         case wxBORDER_DOUBLE:
 666             size.x = wxGetMetricOrDefault(wxSYS_EDGE_X) +
 667                         wxGetMetricOrDefault(wxSYS_BORDER_X);
 668             size.y = wxGetMetricOrDefault(wxSYS_EDGE_Y) +
 669                         wxGetMetricOrDefault(wxSYS_BORDER_Y);
 670             break;
 671
 672         default:
 673             wxFAIL_MSG(_T("Unknown border style."));
 674             break;
 675     }
 676
 677     // we have borders on both sides
 678     return size*2;
 679 }
 680
 681 wxSize wxWindowBase::GetEffectiveMinSize() const
 682 {
 683     // merge the best size with the min size, giving priority to the min size
 684     wxSize min = GetMinSize();
 685     if (min.x == wxDefaultCoord || min.y == wxDefaultCoord)
 686     {
 687         wxSize best = GetBestSize();
 688         if (min.x == wxDefaultCoord) min.x =  best.x;
 689         if (min.y == wxDefaultCoord) min.y =  best.y;
 690     }
 691     return min;
 692 }
 693
 694
 695 void wxWindowBase::SetInitialSize(const wxSize& size)
 696 {
 697     // Set the min size to the size passed in.  This will usually either be
 698     // wxDefaultSize or the size passed to this window's ctor/Create function.
 699     SetMinSize(size);
 700
 701     // Merge the size with the best size if needed
 702     wxSize best = GetEffectiveMinSize();
 703
 704     // If the current size doesn't match then change it
 705     if (GetSize() != best)
 706         SetSize(best);
 707 }
 708
 709
 710 // by default the origin is not shifted
 711 wxPoint wxWindowBase::GetClientAreaOrigin() const
 712 {
 713     return wxPoint(0,0);
 714 }
 715
 716 wxSize wxWindowBase::ClientToWindowSize(const wxSize& size) const
 717 {
 718     const wxSize diff(GetSize() - GetClientSize());
 719
 720     return wxSize(size.x == -1 ? -1 : size.x + diff.x,
 721                   size.y == -1 ? -1 : size.y + diff.y);
 722 }
 723
 724 wxSize wxWindowBase::WindowToClientSize(const wxSize& size) const
 725 {
 726     const wxSize diff(GetSize() - GetClientSize());
 727
 728     return wxSize(size.x == -1 ? -1 : size.x - diff.x,
 729                   size.y == -1 ? -1 : size.y - diff.y);
 730 }
 731
 732 void wxWindowBase::SetWindowVariant( wxWindowVariant variant )
 733 {
 734     if ( m_windowVariant != variant )
 735     {
 736         m_windowVariant = variant;
 737
 738         DoSetWindowVariant(variant);
 739     }
 740 }
 741
 742 void wxWindowBase::DoSetWindowVariant( wxWindowVariant variant )
 743 {
 744     // adjust the font height to correspond to our new variant (notice that
 745     // we're only called if something really changed)
 746     wxFont font = GetFont();
 747     int size = font.GetPointSize();
 748     switch ( variant )
 749     {
 750         case wxWINDOW_VARIANT_NORMAL:
 751             break;
 752
 753         case wxWINDOW_VARIANT_SMALL:
 754             size *= 3;
 755             size /= 4;
 756             break;
 757
 758         case wxWINDOW_VARIANT_MINI:
 759             size *= 2;
 760             size /= 3;
 761             break;
 762
 763         case wxWINDOW_VARIANT_LARGE:
 764             size *= 5;
 765             size /= 4;
 766             break;
 767
 768         default:
 769             wxFAIL_MSG(_T("unexpected window variant"));
 770             break;
 771     }
 772
 773     font.SetPointSize(size);
 774     SetFont(font);
 775 }
 776
 777 void wxWindowBase::DoSetSizeHints( int minW, int minH,
 778                                    int maxW, int maxH,
 779                                    int WXUNUSED(incW), int WXUNUSED(incH) )
 780 {
 781     wxCHECK_RET( (minW == wxDefaultCoord || maxW == wxDefaultCoord || minW <= maxW) &&
 782                     (minH == wxDefaultCoord || maxH == wxDefaultCoord || minH <= maxH),
 783                  _T("min width/height must be less than max width/height!") );
 784
 785     m_minWidth = minW;
 786     m_maxWidth = maxW;
 787     m_minHeight = minH;
 788     m_maxHeight = maxH;
 789 }
 790
 791
 792 #if WXWIN_COMPATIBILITY_2_8
 793 void wxWindowBase::SetVirtualSizeHints(int WXUNUSED(minW), int WXUNUSED(minH),
 794                                        int WXUNUSED(maxW), int WXUNUSED(maxH))
 795 {
 796 }
 797
 798 void wxWindowBase::SetVirtualSizeHints(const wxSize& WXUNUSED(minsize),
 799                                        const wxSize& WXUNUSED(maxsize))
 800 {
 801 }
 802 #endif // WXWIN_COMPATIBILITY_2_8
 803
 804 void wxWindowBase::DoSetVirtualSize( int x, int y )
 805 {
 806     m_virtualSize = wxSize(x, y);
 807 }
 808
 809 wxSize wxWindowBase::DoGetVirtualSize() const
 810 {
 811     // we should use the entire client area so if it is greater than our
 812     // virtual size, expand it to fit (otherwise if the window is big enough we
 813     // wouldn't be using parts of it)
 814     wxSize size = GetClientSize();
 815     if ( m_virtualSize.x > size.x )
 816         size.x = m_virtualSize.x;
 817
 818     if ( m_virtualSize.y >= size.y )
 819         size.y = m_virtualSize.y;
 820
 821     return size;
 822 }
 823
 824 void wxWindowBase::DoGetScreenPosition(int *x, int *y) const
 825 {
 826     // screen position is the same as (0, 0) in client coords for non TLWs (and
 827     // TLWs override this method)
 828     if ( x )
 829         *x = 0;
 830     if ( y )
 831         *y = 0;
 832
 833     ClientToScreen(x, y);
 834 }
 835
 836 // ----------------------------------------------------------------------------
 837 // show/hide/enable/disable the window
 838 // ----------------------------------------------------------------------------
 839
 840 bool wxWindowBase::Show(bool show)
 841 {
 842     if ( show != m_isShown )
 843     {
 844         m_isShown = show;
 845
 846         return true;
 847     }
 848     else
 849     {
 850         return false;
 851     }
 852 }
 853
 854 bool wxWindowBase::IsEnabled() const
 855 {
 856     return IsThisEnabled() && (IsTopLevel() || !GetParent() || GetParent()->IsEnabled());
 857 }
 858
 859 void wxWindowBase::NotifyWindowOnEnableChange(bool enabled)
 860 {
 861 #ifndef wxHAS_NATIVE_ENABLED_MANAGEMENT
 862     DoEnable(enabled);
 863 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 864
 865     OnEnabled(enabled);
 866
 867     // If we are top-level then the logic doesn't apply - otherwise
 868     // showing a modal dialog would result in total greying out (and ungreying
 869     // out later) of everything which would be really ugly
 870     if ( IsTopLevel() )
 871         return;
 872
 873     for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 874           node;
 875           node = node->GetNext() )
 876     {
 877         wxWindowBase * const child = node->GetData();
 878         if ( !child->IsTopLevel() && child->IsThisEnabled() )
 879             child->NotifyWindowOnEnableChange(enabled);
 880     }
 881 }
 882
 883 bool wxWindowBase::Enable(bool enable)
 884 {
 885     if ( enable == IsThisEnabled() )
 886         return false;
 887
 888     m_isEnabled = enable;
 889
 890 #ifdef wxHAS_NATIVE_ENABLED_MANAGEMENT
 891     DoEnable(enable);
 892 #else // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 893     wxWindowBase * const parent = GetParent();
 894     if( !IsTopLevel() && parent && !parent->IsEnabled() )
 895     {
 896         return true;
 897     }
 898 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 899
 900     NotifyWindowOnEnableChange(enable);
 901
 902     return true;
 903 }
 904
 905 bool wxWindowBase::IsShownOnScreen() const
 906 {
 907     // A window is shown on screen if it itself is shown and so are all its
 908     // parents. But if a window is toplevel one, then its always visible on
 909     // screen if IsShown() returns true, even if it has a hidden parent.
 910     return IsShown() &&
 911            (IsTopLevel() || GetParent() == NULL || GetParent()->IsShownOnScreen());
 912 }
 913
 914 // ----------------------------------------------------------------------------
 915 // RTTI
 916 // ----------------------------------------------------------------------------
 917
 918 bool wxWindowBase::IsTopLevel() const
 919 {
 920     return false;
 921 }
 922
 923 // ----------------------------------------------------------------------------
 924 // reparenting the window
 925 // ----------------------------------------------------------------------------
 926
 927 void wxWindowBase::AddChild(wxWindowBase *child)
 928 {
 929     wxCHECK_RET( child, wxT("can't add a NULL child") );
 930
 931     // this should never happen and it will lead to a crash later if it does
 932     // because RemoveChild() will remove only one node from the children list
 933     // and the other(s) one(s) will be left with dangling pointers in them
 934     wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), _T("AddChild() called twice") );
 935
 936     GetChildren().Append((wxWindow*)child);
 937     child->SetParent(this);
 938 }
 939
 940 void wxWindowBase::RemoveChild(wxWindowBase *child)
 941 {
 942     wxCHECK_RET( child, wxT("can't remove a NULL child") );
 943
 944     GetChildren().DeleteObject((wxWindow *)child);
 945     child->SetParent(NULL);
 946 }
 947
 948 bool wxWindowBase::Reparent(wxWindowBase *newParent)
 949 {
 950     wxWindow *oldParent = GetParent();
 951     if ( newParent == oldParent )
 952     {
 953         // nothing done
 954         return false;
 955     }
 956
 957     const bool oldEnabledState = IsEnabled();
 958
 959     // unlink this window from the existing parent.
 960     if ( oldParent )
 961     {
 962         oldParent->RemoveChild(this);
 963     }
 964     else
 965     {
 966         wxTopLevelWindows.DeleteObject((wxWindow *)this);
 967     }
 968
 969     // add it to the new one
 970     if ( newParent )
 971     {
 972         newParent->AddChild(this);
 973     }
 974     else
 975     {
 976         wxTopLevelWindows.Append((wxWindow *)this);
 977     }
 978
 979     // We need to notify window (and its subwindows) if by changing the parent
 980     // we also change our enabled/disabled status.
 981     const bool newEnabledState = IsEnabled();
 982     if ( newEnabledState != oldEnabledState )
 983     {
 984         NotifyWindowOnEnableChange(newEnabledState);
 985     }
 986
 987     return true;
 988 }
 989
 990 // ----------------------------------------------------------------------------
 991 // event handler stuff
 992 // ----------------------------------------------------------------------------
 993
 994 void wxWindowBase::PushEventHandler(wxEvtHandler *handler)
 995 {
 996     wxEvtHandler *handlerOld = GetEventHandler();
 997
 998     handler->SetNextHandler(handlerOld);
 999
1000     if ( handlerOld )
1001         GetEventHandler()->SetPreviousHandler(handler);
1002
1003     SetEventHandler(handler);
1004 }
1005
1006 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
1007 {
1008     wxEvtHandler *handlerA = GetEventHandler();
1009     if ( handlerA )
1010     {
1011         wxEvtHandler *handlerB = handlerA->GetNextHandler();
1012         handlerA->SetNextHandler((wxEvtHandler *)NULL);
1013
1014         if ( handlerB )
1015             handlerB->SetPreviousHandler((wxEvtHandler *)NULL);
1016         SetEventHandler(handlerB);
1017
1018         if ( deleteHandler )
1019         {
1020             delete handlerA;
1021             handlerA = (wxEvtHandler *)NULL;
1022         }
1023     }
1024
1025     return handlerA;
1026 }
1027
1028 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handler)
1029 {
1030     wxCHECK_MSG( handler, false, _T("RemoveEventHandler(NULL) called") );
1031
1032     wxEvtHandler *handlerPrev = NULL,
1033                  *handlerCur = GetEventHandler();
1034     while ( handlerCur )
1035     {
1036         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
1037
1038         if ( handlerCur == handler )
1039         {
1040             if ( handlerPrev )
1041             {
1042                 handlerPrev->SetNextHandler(handlerNext);
1043             }
1044             else
1045             {
1046                 SetEventHandler(handlerNext);
1047             }
1048
1049             if ( handlerNext )
1050             {
1051                 handlerNext->SetPreviousHandler ( handlerPrev );
1052             }
1053
1054             handler->SetNextHandler(NULL);
1055             handler->SetPreviousHandler(NULL);
1056
1057             return true;
1058         }
1059
1060         handlerPrev = handlerCur;
1061         handlerCur = handlerNext;
1062     }
1063
1064     wxFAIL_MSG( _T("where has the event handler gone?") );
1065
1066     return false;
1067 }
1068
1069 bool wxWindowBase::HandleWindowEvent(wxEvent& event) const
1070 {
1071     return GetEventHandler()->SafelyProcessEvent(event);
1072 }
1073
1074 // ----------------------------------------------------------------------------
1075 // colours, fonts &c
1076 // ----------------------------------------------------------------------------
1077
1078 void wxWindowBase::InheritAttributes()
1079 {
1080     const wxWindowBase * const parent = GetParent();
1081     if ( !parent )
1082         return;
1083
1084     // we only inherit attributes which had been explicitly set for the parent
1085     // which ensures that this only happens if the user really wants it and
1086     // not by default which wouldn't make any sense in modern GUIs where the
1087     // controls don't all use the same fonts (nor colours)
1088     if ( parent->m_inheritFont && !m_hasFont )
1089         SetFont(parent->GetFont());
1090
1091     // in addition, there is a possibility to explicitly forbid inheriting
1092     // colours at each class level by overriding ShouldInheritColours()
1093     if ( ShouldInheritColours() )
1094     {
1095         if ( parent->m_inheritFgCol && !m_hasFgCol )
1096             SetForegroundColour(parent->GetForegroundColour());
1097
1098         // inheriting (solid) background colour is wrong as it totally breaks
1099         // any kind of themed backgrounds
1100         //
1101         // instead, the controls should use the same background as their parent
1102         // (ideally by not drawing it at all)
1103 #if 0
1104         if ( parent->m_inheritBgCol && !m_hasBgCol )
1105             SetBackgroundColour(parent->GetBackgroundColour());
1106 #endif // 0
1107     }
1108 }
1109
1110 /* static */ wxVisualAttributes
1111 wxWindowBase::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1112 {
1113     // it is important to return valid values for all attributes from here,
1114     // GetXXX() below rely on this
1115     wxVisualAttributes attrs;
1116     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
1117     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
1118
1119     // On Smartphone/PocketPC, wxSYS_COLOUR_WINDOW is a better reflection of
1120     // the usual background colour than wxSYS_COLOUR_BTNFACE.
1121     // It's a pity that wxSYS_COLOUR_WINDOW isn't always a suitable background
1122     // colour on other platforms.
1123
1124 #if defined(__WXWINCE__) && (defined(__SMARTPHONE__) || defined(__POCKETPC__))
1125     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1126 #else
1127     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
1128 #endif
1129     return attrs;
1130 }
1131
1132 wxColour wxWindowBase::GetBackgroundColour() const
1133 {
1134     if ( !m_backgroundColour.IsOk() )
1135     {
1136         wxASSERT_MSG( !m_hasBgCol, _T("we have invalid explicit bg colour?") );
1137
1138         // get our default background colour
1139         wxColour colBg = GetDefaultAttributes().colBg;
1140
1141         // we must return some valid colour to avoid redoing this every time
1142         // and also to avoid surprizing the applications written for older
1143         // wxWidgets versions where GetBackgroundColour() always returned
1144         // something -- so give them something even if it doesn't make sense
1145         // for this window (e.g. it has a themed background)
1146         if ( !colBg.Ok() )
1147             colBg = GetClassDefaultAttributes().colBg;
1148
1149         return colBg;
1150     }
1151     else
1152         return m_backgroundColour;
1153 }
1154
1155 wxColour wxWindowBase::GetForegroundColour() const
1156 {
1157     // logic is the same as above
1158     if ( !m_hasFgCol && !m_foregroundColour.Ok() )
1159     {
1160         wxColour colFg = GetDefaultAttributes().colFg;
1161
1162         if ( !colFg.IsOk() )
1163             colFg = GetClassDefaultAttributes().colFg;
1164
1165         return colFg;
1166     }
1167     else
1168         return m_foregroundColour;
1169 }
1170
1171 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
1172 {
1173     if ( colour == m_backgroundColour )
1174         return false;
1175
1176     m_hasBgCol = colour.IsOk();
1177     if ( m_backgroundStyle != wxBG_STYLE_CUSTOM )
1178         m_backgroundStyle = m_hasBgCol ? wxBG_STYLE_COLOUR : wxBG_STYLE_SYSTEM;
1179
1180     m_inheritBgCol = m_hasBgCol;
1181     m_backgroundColour = colour;
1182     SetThemeEnabled( !m_hasBgCol && !m_foregroundColour.Ok() );
1183     return true;
1184 }
1185
1186 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
1187 {
1188     if (colour == m_foregroundColour )
1189         return false;
1190
1191     m_hasFgCol = colour.IsOk();
1192     m_inheritFgCol = m_hasFgCol;
1193     m_foregroundColour = colour;
1194     SetThemeEnabled( !m_hasFgCol && !m_backgroundColour.Ok() );
1195     return true;
1196 }
1197
1198 bool wxWindowBase::SetCursor(const wxCursor& cursor)
1199 {
1200     // setting an invalid cursor is ok, it means that we don't have any special
1201     // cursor
1202     if ( m_cursor.IsSameAs(cursor) )
1203     {
1204         // no change
1205         return false;
1206     }
1207
1208     m_cursor = cursor;
1209
1210     return true;
1211 }
1212
1213 wxFont wxWindowBase::GetFont() const
1214 {
1215     // logic is the same as in GetBackgroundColour()
1216     if ( !m_font.IsOk() )
1217     {
1218         wxASSERT_MSG( !m_hasFont, _T("we have invalid explicit font?") );
1219
1220         wxFont font = GetDefaultAttributes().font;
1221         if ( !font.IsOk() )
1222             font = GetClassDefaultAttributes().font;
1223
1224         return font;
1225     }
1226     else
1227         return m_font;
1228 }
1229
1230 bool wxWindowBase::SetFont(const wxFont& font)
1231 {
1232     if ( font == m_font )
1233     {
1234         // no change
1235         return false;
1236     }
1237
1238     m_font = font;
1239     m_hasFont = font.IsOk();
1240     m_inheritFont = m_hasFont;
1241
1242     InvalidateBestSize();
1243
1244     return true;
1245 }
1246
1247 #if wxUSE_PALETTE
1248
1249 void wxWindowBase::SetPalette(const wxPalette& pal)
1250 {
1251     m_hasCustomPalette = true;
1252     m_palette = pal;
1253
1254     // VZ: can anyone explain me what do we do here?
1255     wxWindowDC d((wxWindow *) this);
1256     d.SetPalette(pal);
1257 }
1258
1259 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
1260 {
1261     wxWindow *win = (wxWindow *)this;
1262     while ( win && !win->HasCustomPalette() )
1263     {
1264         win = win->GetParent();
1265     }
1266
1267     return win;
1268 }
1269
1270 #endif // wxUSE_PALETTE
1271
1272 #if wxUSE_CARET
1273 void wxWindowBase::SetCaret(wxCaret *caret)
1274 {
1275     if ( m_caret )
1276     {
1277         delete m_caret;
1278     }
1279
1280     m_caret = caret;
1281
1282     if ( m_caret )
1283     {
1284         wxASSERT_MSG( m_caret->GetWindow() == this,
1285                       wxT("caret should be created associated to this window") );
1286     }
1287 }
1288 #endif // wxUSE_CARET
1289
1290 #if wxUSE_VALIDATORS
1291 // ----------------------------------------------------------------------------
1292 // validators
1293 // ----------------------------------------------------------------------------
1294
1295 void wxWindowBase::SetValidator(const wxValidator& validator)
1296 {
1297     if ( m_windowValidator )
1298         delete m_windowValidator;
1299
1300     m_windowValidator = (wxValidator *)validator.Clone();
1301
1302     if ( m_windowValidator )
1303         m_windowValidator->SetWindow(this);
1304 }
1305 #endif // wxUSE_VALIDATORS
1306
1307 // ----------------------------------------------------------------------------
1308 // update region stuff
1309 // ----------------------------------------------------------------------------
1310
1311 wxRect wxWindowBase::GetUpdateClientRect() const
1312 {
1313     wxRegion rgnUpdate = GetUpdateRegion();
1314     rgnUpdate.Intersect(GetClientRect());
1315     wxRect rectUpdate = rgnUpdate.GetBox();
1316     wxPoint ptOrigin = GetClientAreaOrigin();
1317     rectUpdate.x -= ptOrigin.x;
1318     rectUpdate.y -= ptOrigin.y;
1319
1320     return rectUpdate;
1321 }
1322
1323 bool wxWindowBase::DoIsExposed(int x, int y) const
1324 {
1325     return m_updateRegion.Contains(x, y) != wxOutRegion;
1326 }
1327
1328 bool wxWindowBase::DoIsExposed(int x, int y, int w, int h) const
1329 {
1330     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
1331 }
1332
1333 void wxWindowBase::ClearBackground()
1334 {
1335     // wxGTK uses its own version, no need to add never used code
1336 #ifndef __WXGTK__
1337     wxClientDC dc((wxWindow *)this);
1338     wxBrush brush(GetBackgroundColour(), wxSOLID);
1339     dc.SetBackground(brush);
1340     dc.Clear();
1341 #endif // __WXGTK__
1342 }
1343
1344 // ----------------------------------------------------------------------------
1345 // find child window by id or name
1346 // ----------------------------------------------------------------------------
1347
1348 wxWindow *wxWindowBase::FindWindow(long id) const
1349 {
1350     if ( id == m_windowId )
1351         return (wxWindow *)this;
1352
1353     wxWindowBase *res = (wxWindow *)NULL;
1354     wxWindowList::compatibility_iterator node;
1355     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1356     {
1357         wxWindowBase *child = node->GetData();
1358         res = child->FindWindow( id );
1359     }
1360
1361     return (wxWindow *)res;
1362 }
1363
1364 wxWindow *wxWindowBase::FindWindow(const wxString& name) const
1365 {
1366     if ( name == m_windowName )
1367         return (wxWindow *)this;
1368
1369     wxWindowBase *res = (wxWindow *)NULL;
1370     wxWindowList::compatibility_iterator node;
1371     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1372     {
1373         wxWindow *child = node->GetData();
1374         res = child->FindWindow(name);
1375     }
1376
1377     return (wxWindow *)res;
1378 }
1379
1380
1381 // find any window by id or name or label: If parent is non-NULL, look through
1382 // children for a label or title matching the specified string. If NULL, look
1383 // through all top-level windows.
1384 //
1385 // to avoid duplicating code we reuse the same helper function but with
1386 // different comparators
1387
1388 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1389                                 const wxString& label, long id);
1390
1391 static
1392 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1393                            long WXUNUSED(id))
1394 {
1395     return win->GetLabel() == label;
1396 }
1397
1398 static
1399 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1400                           long WXUNUSED(id))
1401 {
1402     return win->GetName() == label;
1403 }
1404
1405 static
1406 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1407                         long id)
1408 {
1409     return win->GetId() == id;
1410 }
1411
1412 // recursive helper for the FindWindowByXXX() functions
1413 static
1414 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1415                                   const wxString& label,
1416                                   long id,
1417                                   wxFindWindowCmp cmp)
1418 {
1419     if ( parent )
1420     {
1421         // see if this is the one we're looking for
1422         if ( (*cmp)(parent, label, id) )
1423             return (wxWindow *)parent;
1424
1425         // It wasn't, so check all its children
1426         for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
1427               node;
1428               node = node->GetNext() )
1429         {
1430             // recursively check each child
1431             wxWindow *win = (wxWindow *)node->GetData();
1432             wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1433             if (retwin)
1434                 return retwin;
1435         }
1436     }
1437
1438     // Not found
1439     return NULL;
1440 }
1441
1442 // helper for FindWindowByXXX()
1443 static
1444 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1445                              const wxString& label,
1446                              long id,
1447                              wxFindWindowCmp cmp)
1448 {
1449     if ( parent )
1450     {
1451         // just check parent and all its children
1452         return wxFindWindowRecursively(parent, label, id, cmp);
1453     }
1454
1455     // start at very top of wx's windows
1456     for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1457           node;
1458           node = node->GetNext() )
1459     {
1460         // recursively check each window & its children
1461         wxWindow *win = node->GetData();
1462         wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1463         if (retwin)
1464             return retwin;
1465     }
1466
1467     return NULL;
1468 }
1469
1470 /* static */
1471 wxWindow *
1472 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1473 {
1474     return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1475 }
1476
1477 /* static */
1478 wxWindow *
1479 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1480 {
1481     wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1482
1483     if ( !win )
1484     {
1485         // fall back to the label
1486         win = FindWindowByLabel(title, parent);
1487     }
1488
1489     return win;
1490 }
1491
1492 /* static */
1493 wxWindow *
1494 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1495 {
1496     return wxFindWindowHelper(parent, wxEmptyString, id, wxFindWindowCmpIds);
1497 }
1498
1499 // ----------------------------------------------------------------------------
1500 // dialog oriented functions
1501 // ----------------------------------------------------------------------------
1502
1503 void wxWindowBase::MakeModal(bool modal)
1504 {
1505     // Disable all other windows
1506     if ( IsTopLevel() )
1507     {
1508         wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1509         while (node)
1510         {
1511             wxWindow *win = node->GetData();
1512             if (win != this)
1513                 win->Enable(!modal);
1514
1515             node = node->GetNext();
1516         }
1517     }
1518 }
1519
1520 bool wxWindowBase::Validate()
1521 {
1522 #if wxUSE_VALIDATORS
1523     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1524
1525     wxWindowList::compatibility_iterator node;
1526     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1527     {
1528         wxWindowBase *child = node->GetData();
1529         wxValidator *validator = child->GetValidator();
1530         if ( validator && !validator->Validate((wxWindow *)this) )
1531         {
1532             return false;
1533         }
1534
1535         if ( recurse && !child->Validate() )
1536         {
1537             return false;
1538         }
1539     }
1540 #endif // wxUSE_VALIDATORS
1541
1542     return true;
1543 }
1544
1545 bool wxWindowBase::TransferDataToWindow()
1546 {
1547 #if wxUSE_VALIDATORS
1548     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1549
1550     wxWindowList::compatibility_iterator node;
1551     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1552     {
1553         wxWindowBase *child = node->GetData();
1554         wxValidator *validator = child->GetValidator();
1555         if ( validator && !validator->TransferToWindow() )
1556         {
1557             wxLogWarning(_("Could not transfer data to window"));
1558 #if wxUSE_LOG
1559             wxLog::FlushActive();
1560 #endif // wxUSE_LOG
1561
1562             return false;
1563         }
1564
1565         if ( recurse )
1566         {
1567             if ( !child->TransferDataToWindow() )
1568             {
1569                 // warning already given
1570                 return false;
1571             }
1572         }
1573     }
1574 #endif // wxUSE_VALIDATORS
1575
1576     return true;
1577 }
1578
1579 bool wxWindowBase::TransferDataFromWindow()
1580 {
1581 #if wxUSE_VALIDATORS
1582     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1583
1584     wxWindowList::compatibility_iterator node;
1585     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1586     {
1587         wxWindow *child = node->GetData();
1588         wxValidator *validator = child->GetValidator();
1589         if ( validator && !validator->TransferFromWindow() )
1590         {
1591             // nop warning here because the application is supposed to give
1592             // one itself - we don't know here what might have gone wrongly
1593
1594             return false;
1595         }
1596
1597         if ( recurse )
1598         {
1599             if ( !child->TransferDataFromWindow() )
1600             {
1601                 // warning already given
1602                 return false;
1603             }
1604         }
1605     }
1606 #endif // wxUSE_VALIDATORS
1607
1608     return true;
1609 }
1610
1611 void wxWindowBase::InitDialog()
1612 {
1613     wxInitDialogEvent event(GetId());
1614     event.SetEventObject( this );
1615     GetEventHandler()->ProcessEvent(event);
1616 }
1617
1618 // ----------------------------------------------------------------------------
1619 // context-sensitive help support
1620 // ----------------------------------------------------------------------------
1621
1622 #if wxUSE_HELP
1623
1624 // associate this help text with this window
1625 void wxWindowBase::SetHelpText(const wxString& text)
1626 {
1627     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1628     if ( helpProvider )
1629     {
1630         helpProvider->AddHelp(this, text);
1631     }
1632 }
1633
1634 // associate this help text with all windows with the same id as this
1635 // one
1636 void wxWindowBase::SetHelpTextForId(const wxString& text)
1637 {
1638     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1639     if ( helpProvider )
1640     {
1641         helpProvider->AddHelp(GetId(), text);
1642     }
1643 }
1644
1645 // get the help string associated with this window (may be empty)
1646 // default implementation forwards calls to the help provider
1647 wxString
1648 wxWindowBase::GetHelpTextAtPoint(const wxPoint & WXUNUSED(pt),
1649                                  wxHelpEvent::Origin WXUNUSED(origin)) const
1650 {
1651     wxString text;
1652     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1653     if ( helpProvider )
1654     {
1655         text = helpProvider->GetHelp(this);
1656     }
1657
1658     return text;
1659 }
1660
1661 // show help for this window
1662 void wxWindowBase::OnHelp(wxHelpEvent& event)
1663 {
1664     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1665     if ( helpProvider )
1666     {
1667         if ( helpProvider->ShowHelpAtPoint(this, event.GetPosition(), event.GetOrigin()) )
1668         {
1669             // skip the event.Skip() below
1670             return;
1671         }
1672     }
1673
1674     event.Skip();
1675 }
1676
1677 #endif // wxUSE_HELP
1678
1679 // ----------------------------------------------------------------------------
1680 // tooltips
1681 // ----------------------------------------------------------------------------
1682
1683 #if wxUSE_TOOLTIPS
1684
1685 void wxWindowBase::SetToolTip( const wxString &tip )
1686 {
1687     // don't create the new tooltip if we already have one
1688     if ( m_tooltip )
1689     {
1690         m_tooltip->SetTip( tip );
1691     }
1692     else
1693     {
1694         SetToolTip( new wxToolTip( tip ) );
1695     }
1696
1697     // setting empty tooltip text does not remove the tooltip any more - use
1698     // SetToolTip((wxToolTip *)NULL) for this
1699 }
1700
1701 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1702 {
1703     if ( m_tooltip != tooltip )
1704     {
1705         if ( m_tooltip )
1706             delete m_tooltip;
1707
1708         m_tooltip = tooltip;
1709     }
1710 }
1711
1712 #endif // wxUSE_TOOLTIPS
1713
1714 // ----------------------------------------------------------------------------
1715 // constraints and sizers
1716 // ----------------------------------------------------------------------------
1717
1718 #if wxUSE_CONSTRAINTS
1719
1720 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1721 {
1722     if ( m_constraints )
1723     {
1724         UnsetConstraints(m_constraints);
1725         delete m_constraints;
1726     }
1727     m_constraints = constraints;
1728     if ( m_constraints )
1729     {
1730         // Make sure other windows know they're part of a 'meaningful relationship'
1731         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1732             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1733         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1734             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1735         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1736             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1737         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1738             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1739         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1740             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1741         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1742             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1743         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1744             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1745         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1746             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1747     }
1748 }
1749
1750 // This removes any dangling pointers to this window in other windows'
1751 // constraintsInvolvedIn lists.
1752 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1753 {
1754     if ( c )
1755     {
1756         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1757             c->left.GetOtherWindow()->RemoveConstraintReference(this);
1758         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1759             c->top.GetOtherWindow()->RemoveConstraintReference(this);
1760         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1761             c->right.GetOtherWindow()->RemoveConstraintReference(this);
1762         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1763             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1764         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1765             c->width.GetOtherWindow()->RemoveConstraintReference(this);
1766         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1767             c->height.GetOtherWindow()->RemoveConstraintReference(this);
1768         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1769             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
1770         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
1771             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
1772     }
1773 }
1774
1775 // Back-pointer to other windows we're involved with, so if we delete this
1776 // window, we must delete any constraints we're involved with.
1777 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
1778 {
1779     if ( !m_constraintsInvolvedIn )
1780         m_constraintsInvolvedIn = new wxWindowList;
1781     if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
1782         m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
1783 }
1784
1785 // REMOVE back-pointer to other windows we're involved with.
1786 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
1787 {
1788     if ( m_constraintsInvolvedIn )
1789         m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
1790 }
1791
1792 // Reset any constraints that mention this window
1793 void wxWindowBase::DeleteRelatedConstraints()
1794 {
1795     if ( m_constraintsInvolvedIn )
1796     {
1797         wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
1798         while (node)
1799         {
1800             wxWindow *win = node->GetData();
1801             wxLayoutConstraints *constr = win->GetConstraints();
1802
1803             // Reset any constraints involving this window
1804             if ( constr )
1805             {
1806                 constr->left.ResetIfWin(this);
1807                 constr->top.ResetIfWin(this);
1808                 constr->right.ResetIfWin(this);
1809                 constr->bottom.ResetIfWin(this);
1810                 constr->width.ResetIfWin(this);
1811                 constr->height.ResetIfWin(this);
1812                 constr->centreX.ResetIfWin(this);
1813                 constr->centreY.ResetIfWin(this);
1814             }
1815
1816             wxWindowList::compatibility_iterator next = node->GetNext();
1817             m_constraintsInvolvedIn->Erase(node);
1818             node = next;
1819         }
1820
1821         delete m_constraintsInvolvedIn;
1822         m_constraintsInvolvedIn = (wxWindowList *) NULL;
1823     }
1824 }
1825
1826 #endif // wxUSE_CONSTRAINTS
1827
1828 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
1829 {
1830     if ( sizer == m_windowSizer)
1831         return;
1832
1833     if ( m_windowSizer )
1834     {
1835         m_windowSizer->SetContainingWindow(NULL);
1836
1837         if ( deleteOld )
1838             delete m_windowSizer;
1839     }
1840
1841     m_windowSizer = sizer;
1842     if ( m_windowSizer )
1843     {
1844         m_windowSizer->SetContainingWindow((wxWindow *)this);
1845     }
1846
1847     SetAutoLayout(m_windowSizer != NULL);
1848 }
1849
1850 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
1851 {
1852     SetSizer( sizer, deleteOld );
1853     sizer->SetSizeHints( (wxWindow*) this );
1854 }
1855
1856
1857 void wxWindowBase::SetContainingSizer(wxSizer* sizer)
1858 {
1859     // adding a window to a sizer twice is going to result in fatal and
1860     // hard to debug problems later because when deleting the second
1861     // associated wxSizerItem we're going to dereference a dangling
1862     // pointer; so try to detect this as early as possible
1863     wxASSERT_MSG( !sizer || m_containingSizer != sizer,
1864                   _T("Adding a window to the same sizer twice?") );
1865
1866     m_containingSizer = sizer;
1867 }
1868
1869 #if wxUSE_CONSTRAINTS
1870
1871 void wxWindowBase::SatisfyConstraints()
1872 {
1873     wxLayoutConstraints *constr = GetConstraints();
1874     bool wasOk = constr && constr->AreSatisfied();
1875
1876     ResetConstraints();   // Mark all constraints as unevaluated
1877
1878     int noChanges = 1;
1879
1880     // if we're a top level panel (i.e. our parent is frame/dialog), our
1881     // own constraints will never be satisfied any more unless we do it
1882     // here
1883     if ( wasOk )
1884     {
1885         while ( noChanges > 0 )
1886         {
1887             LayoutPhase1(&noChanges);
1888         }
1889     }
1890
1891     LayoutPhase2(&noChanges);
1892 }
1893
1894 #endif // wxUSE_CONSTRAINTS
1895
1896 bool wxWindowBase::Layout()
1897 {
1898     // If there is a sizer, use it instead of the constraints
1899     if ( GetSizer() )
1900     {
1901         int w = 0, h = 0;
1902         GetVirtualSize(&w, &h);
1903         GetSizer()->SetDimension( 0, 0, w, h );
1904     }
1905 #if wxUSE_CONSTRAINTS
1906     else
1907     {
1908         SatisfyConstraints(); // Find the right constraints values
1909         SetConstraintSizes(); // Recursively set the real window sizes
1910     }
1911 #endif
1912
1913     return true;
1914 }
1915
1916 #if wxUSE_CONSTRAINTS
1917
1918 // first phase of the constraints evaluation: set our own constraints
1919 bool wxWindowBase::LayoutPhase1(int *noChanges)
1920 {
1921     wxLayoutConstraints *constr = GetConstraints();
1922
1923     return !constr || constr->SatisfyConstraints(this, noChanges);
1924 }
1925
1926 // second phase: set the constraints for our children
1927 bool wxWindowBase::LayoutPhase2(int *noChanges)
1928 {
1929     *noChanges = 0;
1930
1931     // Layout children
1932     DoPhase(1);
1933
1934     // Layout grand children
1935     DoPhase(2);
1936
1937     return true;
1938 }
1939
1940 // Do a phase of evaluating child constraints
1941 bool wxWindowBase::DoPhase(int phase)
1942 {
1943     // the list containing the children for which the constraints are already
1944     // set correctly
1945     wxWindowList succeeded;
1946
1947     // the max number of iterations we loop before concluding that we can't set
1948     // the constraints
1949     static const int maxIterations = 500;
1950
1951     for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
1952     {
1953         int noChanges = 0;
1954
1955         // loop over all children setting their constraints
1956         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1957               node;
1958               node = node->GetNext() )
1959         {
1960             wxWindow *child = node->GetData();
1961             if ( child->IsTopLevel() )
1962             {
1963                 // top level children are not inside our client area
1964                 continue;
1965             }
1966
1967             if ( !child->GetConstraints() || succeeded.Find(child) )
1968             {
1969                 // this one is either already ok or nothing we can do about it
1970                 continue;
1971             }
1972
1973             int tempNoChanges = 0;
1974             bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
1975                                       : child->LayoutPhase2(&tempNoChanges);
1976             noChanges += tempNoChanges;
1977
1978             if ( success )
1979             {
1980                 succeeded.Append(child);
1981             }
1982         }
1983
1984         if ( !noChanges )
1985         {
1986             // constraints are set
1987             break;
1988         }
1989     }
1990
1991     return true;
1992 }
1993
1994 void wxWindowBase::ResetConstraints()
1995 {
1996     wxLayoutConstraints *constr = GetConstraints();
1997     if ( constr )
1998     {
1999         constr->left.SetDone(false);
2000         constr->top.SetDone(false);
2001         constr->right.SetDone(false);
2002         constr->bottom.SetDone(false);
2003         constr->width.SetDone(false);
2004         constr->height.SetDone(false);
2005         constr->centreX.SetDone(false);
2006         constr->centreY.SetDone(false);
2007     }
2008
2009     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2010     while (node)
2011     {
2012         wxWindow *win = node->GetData();
2013         if ( !win->IsTopLevel() )
2014             win->ResetConstraints();
2015         node = node->GetNext();
2016     }
2017 }
2018
2019 // Need to distinguish between setting the 'fake' size for windows and sizers,
2020 // and setting the real values.
2021 void wxWindowBase::SetConstraintSizes(bool recurse)
2022 {
2023     wxLayoutConstraints *constr = GetConstraints();
2024     if ( constr && constr->AreSatisfied() )
2025     {
2026         int x = constr->left.GetValue();
2027         int y = constr->top.GetValue();
2028         int w = constr->width.GetValue();
2029         int h = constr->height.GetValue();
2030
2031         if ( (constr->width.GetRelationship() != wxAsIs ) ||
2032              (constr->height.GetRelationship() != wxAsIs) )
2033         {
2034             SetSize(x, y, w, h);
2035         }
2036         else
2037         {
2038             // If we don't want to resize this window, just move it...
2039             Move(x, y);
2040         }
2041     }
2042     else if ( constr )
2043     {
2044         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
2045                    GetClassInfo()->GetClassName(),
2046                    GetName().c_str());
2047     }
2048
2049     if ( recurse )
2050     {
2051         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2052         while (node)
2053         {
2054             wxWindow *win = node->GetData();
2055             if ( !win->IsTopLevel() && win->GetConstraints() )
2056                 win->SetConstraintSizes();
2057             node = node->GetNext();
2058         }
2059     }
2060 }
2061
2062 // Only set the size/position of the constraint (if any)
2063 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
2064 {
2065     wxLayoutConstraints *constr = GetConstraints();
2066     if ( constr )
2067     {
2068         if ( x != wxDefaultCoord )
2069         {
2070             constr->left.SetValue(x);
2071             constr->left.SetDone(true);
2072         }
2073         if ( y != wxDefaultCoord )
2074         {
2075             constr->top.SetValue(y);
2076             constr->top.SetDone(true);
2077         }
2078         if ( w != wxDefaultCoord )
2079         {
2080             constr->width.SetValue(w);
2081             constr->width.SetDone(true);
2082         }
2083         if ( h != wxDefaultCoord )
2084         {
2085             constr->height.SetValue(h);
2086             constr->height.SetDone(true);
2087         }
2088     }
2089 }
2090
2091 void wxWindowBase::MoveConstraint(int x, int y)
2092 {
2093     wxLayoutConstraints *constr = GetConstraints();
2094     if ( constr )
2095     {
2096         if ( x != wxDefaultCoord )
2097         {
2098             constr->left.SetValue(x);
2099             constr->left.SetDone(true);
2100         }
2101         if ( y != wxDefaultCoord )
2102         {
2103             constr->top.SetValue(y);
2104             constr->top.SetDone(true);
2105         }
2106     }
2107 }
2108
2109 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
2110 {
2111     wxLayoutConstraints *constr = GetConstraints();
2112     if ( constr )
2113     {
2114         *w = constr->width.GetValue();
2115         *h = constr->height.GetValue();
2116     }
2117     else
2118         GetSize(w, h);
2119 }
2120
2121 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
2122 {
2123     wxLayoutConstraints *constr = GetConstraints();
2124     if ( constr )
2125     {
2126         *w = constr->width.GetValue();
2127         *h = constr->height.GetValue();
2128     }
2129     else
2130         GetClientSize(w, h);
2131 }
2132
2133 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
2134 {
2135     wxLayoutConstraints *constr = GetConstraints();
2136     if ( constr )
2137     {
2138         *x = constr->left.GetValue();
2139         *y = constr->top.GetValue();
2140     }
2141     else
2142         GetPosition(x, y);
2143 }
2144
2145 #endif // wxUSE_CONSTRAINTS
2146
2147 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
2148 {
2149     // don't do it for the dialogs/frames - they float independently of their
2150     // parent
2151     if ( !IsTopLevel() )
2152     {
2153         wxWindow *parent = GetParent();
2154         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
2155         {
2156             wxPoint pt(parent->GetClientAreaOrigin());
2157             x += pt.x;
2158             y += pt.y;
2159         }
2160     }
2161 }
2162
2163 // ----------------------------------------------------------------------------
2164 // Update UI processing
2165 // ----------------------------------------------------------------------------
2166
2167 void wxWindowBase::UpdateWindowUI(long flags)
2168 {
2169     wxUpdateUIEvent event(GetId());
2170     event.SetEventObject(this);
2171
2172     if ( GetEventHandler()->ProcessEvent(event) )
2173     {
2174         DoUpdateWindowUI(event);
2175     }
2176
2177     if (flags & wxUPDATE_UI_RECURSE)
2178     {
2179         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2180         while (node)
2181         {
2182             wxWindow* child = (wxWindow*) node->GetData();
2183             child->UpdateWindowUI(flags);
2184             node = node->GetNext();
2185         }
2186     }
2187 }
2188
2189 // do the window-specific processing after processing the update event
2190 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
2191 {
2192     if ( event.GetSetEnabled() )
2193         Enable(event.GetEnabled());
2194
2195     if ( event.GetSetShown() )
2196         Show(event.GetShown());
2197 }
2198
2199 // ----------------------------------------------------------------------------
2200 // dialog units translations
2201 // ----------------------------------------------------------------------------
2202
2203 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
2204 {
2205     int charWidth = GetCharWidth();
2206     int charHeight = GetCharHeight();
2207     wxPoint pt2 = wxDefaultPosition;
2208     if (pt.x != wxDefaultCoord)
2209         pt2.x = (int) ((pt.x * 4) / charWidth);
2210     if (pt.y != wxDefaultCoord)
2211         pt2.y = (int) ((pt.y * 8) / charHeight);
2212
2213     return pt2;
2214 }
2215
2216 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
2217 {
2218     int charWidth = GetCharWidth();
2219     int charHeight = GetCharHeight();
2220     wxPoint pt2 = wxDefaultPosition;
2221     if (pt.x != wxDefaultCoord)
2222         pt2.x = (int) ((pt.x * charWidth) / 4);
2223     if (pt.y != wxDefaultCoord)
2224         pt2.y = (int) ((pt.y * charHeight) / 8);
2225
2226     return pt2;
2227 }
2228
2229 // ----------------------------------------------------------------------------
2230 // event handlers
2231 // ----------------------------------------------------------------------------
2232
2233 // propagate the colour change event to the subwindows
2234 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
2235 {
2236     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2237     while ( node )
2238     {
2239         // Only propagate to non-top-level windows
2240         wxWindow *win = node->GetData();
2241         if ( !win->IsTopLevel() )
2242         {
2243             wxSysColourChangedEvent event2;
2244             event.SetEventObject(win);
2245             win->GetEventHandler()->ProcessEvent(event2);
2246         }
2247
2248         node = node->GetNext();
2249     }
2250
2251     Refresh();
2252 }
2253
2254 // the default action is to populate dialog with data when it's created,
2255 // and nudge the UI into displaying itself correctly in case
2256 // we've turned the wxUpdateUIEvents frequency down low.
2257 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
2258 {
2259     TransferDataToWindow();
2260
2261     // Update the UI at this point
2262     UpdateWindowUI(wxUPDATE_UI_RECURSE);
2263 }
2264
2265 // ----------------------------------------------------------------------------
2266 // menu-related functions
2267 // ----------------------------------------------------------------------------
2268
2269 #if wxUSE_MENUS
2270
2271 bool wxWindowBase::PopupMenu(wxMenu *menu, int x, int y)
2272 {
2273     wxCHECK_MSG( menu, false, "can't popup NULL menu" );
2274
2275     wxCurrentPopupMenu = menu;
2276     const bool rc = DoPopupMenu(menu, x, y);
2277     wxCurrentPopupMenu = NULL;
2278
2279     return rc;
2280 }
2281
2282 // this is used to pass the id of the selected item from the menu event handler
2283 // to the main function itself
2284 //
2285 // it's ok to use a global here as there can be at most one popup menu shown at
2286 // any time
2287 static int gs_popupMenuSelection = wxID_NONE;
2288
2289 void wxWindowBase::InternalOnPopupMenu(wxCommandEvent& event)
2290 {
2291     // store the id in a global variable where we'll retrieve it from later
2292     gs_popupMenuSelection = event.GetId();
2293 }
2294
2295 int
2296 wxWindowBase::DoGetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y)
2297 {
2298     gs_popupMenuSelection = wxID_NONE;
2299
2300     Connect(wxEVT_COMMAND_MENU_SELECTED,
2301             wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2302             NULL,
2303             this);
2304
2305     PopupMenu(&menu, x, y);
2306
2307     Disconnect(wxEVT_COMMAND_MENU_SELECTED,
2308                wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2309                NULL,
2310                this);
2311
2312     return gs_popupMenuSelection;
2313 }
2314
2315 #endif // wxUSE_MENUS
2316
2317 // methods for drawing the sizers in a visible way
2318 #ifdef __WXDEBUG__
2319
2320 static void DrawSizers(wxWindowBase *win);
2321
2322 static void DrawBorder(wxWindowBase *win, const wxRect& rect, bool fill = false)
2323 {
2324     wxClientDC dc((wxWindow *)win);
2325     dc.SetPen(*wxRED_PEN);
2326     dc.SetBrush(fill ? wxBrush(*wxRED, wxCROSSDIAG_HATCH): *wxTRANSPARENT_BRUSH);
2327     dc.DrawRectangle(rect.Deflate(1, 1));
2328 }
2329
2330 static void DrawSizer(wxWindowBase *win, wxSizer *sizer)
2331 {
2332     const wxSizerItemList& items = sizer->GetChildren();
2333     for ( wxSizerItemList::const_iterator i = items.begin(),
2334                                         end = items.end();
2335           i != end;
2336           ++i )
2337     {
2338         wxSizerItem *item = *i;
2339         if ( item->IsSizer() )
2340         {
2341             DrawBorder(win, item->GetRect().Deflate(2));
2342             DrawSizer(win, item->GetSizer());
2343         }
2344         else if ( item->IsSpacer() )
2345         {
2346             DrawBorder(win, item->GetRect().Deflate(2), true);
2347         }
2348         else if ( item->IsWindow() )
2349         {
2350             DrawSizers(item->GetWindow());
2351         }
2352     }
2353 }
2354
2355 static void DrawSizers(wxWindowBase *win)
2356 {
2357     wxSizer *sizer = win->GetSizer();
2358     if ( sizer )
2359     {
2360         DrawBorder(win, win->GetClientSize());
2361         DrawSizer(win, sizer);
2362     }
2363     else // no sizer, still recurse into the children
2364     {
2365         const wxWindowList& children = win->GetChildren();
2366         for ( wxWindowList::const_iterator i = children.begin(),
2367                                          end = children.end();
2368               i != end;
2369               ++i )
2370         {
2371             DrawSizers(*i);
2372         }
2373     }
2374 }
2375
2376 #endif // __WXDEBUG__
2377
2378 // process special middle clicks
2379 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
2380 {
2381     if ( event.ControlDown() && event.AltDown() )
2382     {
2383 #ifdef __WXDEBUG__
2384         // Ctrl-Alt-Shift-mclick makes the sizers visible in debug builds
2385         if ( event.ShiftDown() )
2386         {
2387             DrawSizers(this);
2388             return;
2389         }
2390 #endif // __WXDEBUG__
2391         ::wxInfoMessageBox((wxWindow*)this);
2392     }
2393     else
2394     {
2395         event.Skip();
2396     }
2397 }
2398
2399 // ----------------------------------------------------------------------------
2400 // accessibility
2401 // ----------------------------------------------------------------------------
2402
2403 #if wxUSE_ACCESSIBILITY
2404 void wxWindowBase::SetAccessible(wxAccessible* accessible)
2405 {
2406     if (m_accessible && (accessible != m_accessible))
2407         delete m_accessible;
2408     m_accessible = accessible;
2409     if (m_accessible)
2410         m_accessible->SetWindow((wxWindow*) this);
2411 }
2412
2413 // Returns the accessible object, creating if necessary.
2414 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2415 {
2416     if (!m_accessible)
2417         m_accessible = CreateAccessible();
2418     return m_accessible;
2419 }
2420
2421 // Override to create a specific accessible object.
2422 wxAccessible* wxWindowBase::CreateAccessible()
2423 {
2424     return new wxWindowAccessible((wxWindow*) this);
2425 }
2426
2427 #endif
2428
2429 // ----------------------------------------------------------------------------
2430 // list classes implementation
2431 // ----------------------------------------------------------------------------
2432
2433 #if wxUSE_STL
2434
2435 #include "wx/listimpl.cpp"
2436 WX_DEFINE_LIST(wxWindowList)
2437
2438 #else // !wxUSE_STL
2439
2440 void wxWindowListNode::DeleteData()
2441 {
2442     delete (wxWindow *)GetData();
2443 }
2444
2445 #endif // wxUSE_STL/!wxUSE_STL
2446
2447 // ----------------------------------------------------------------------------
2448 // borders
2449 // ----------------------------------------------------------------------------
2450
2451 wxBorder wxWindowBase::GetBorder(long flags) const
2452 {
2453     wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2454     if ( border == wxBORDER_DEFAULT )
2455     {
2456         border = GetDefaultBorder();
2457     }
2458     else if ( border == wxBORDER_THEME )
2459     {
2460         border = GetDefaultBorderForControl();
2461     }
2462
2463     return border;
2464 }
2465
2466 wxBorder wxWindowBase::GetDefaultBorder() const
2467 {
2468     return wxBORDER_NONE;
2469 }
2470
2471 // ----------------------------------------------------------------------------
2472 // hit testing
2473 // ----------------------------------------------------------------------------
2474
2475 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2476 {
2477     // here we just check if the point is inside the window or not
2478
2479     // check the top and left border first
2480     bool outside = x < 0 || y < 0;
2481     if ( !outside )
2482     {
2483         // check the right and bottom borders too
2484         wxSize size = GetSize();
2485         outside = x >= size.x || y >= size.y;
2486     }
2487
2488     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2489 }
2490
2491 // ----------------------------------------------------------------------------
2492 // mouse capture
2493 // ----------------------------------------------------------------------------
2494
2495 struct WXDLLEXPORT wxWindowNext
2496 {
2497     wxWindow *win;
2498     wxWindowNext *next;
2499 } *wxWindowBase::ms_winCaptureNext = NULL;
2500 wxWindow *wxWindowBase::ms_winCaptureCurrent = NULL;
2501 bool wxWindowBase::ms_winCaptureChanging = false;
2502
2503 void wxWindowBase::CaptureMouse()
2504 {
2505     wxLogTrace(_T("mousecapture"), _T("CaptureMouse(%p)"), wx_static_cast(void*, this));
2506
2507     wxASSERT_MSG( !ms_winCaptureChanging, _T("recursive CaptureMouse call?") );
2508
2509     ms_winCaptureChanging = true;
2510
2511     wxWindow *winOld = GetCapture();
2512     if ( winOld )
2513     {
2514         ((wxWindowBase*) winOld)->DoReleaseMouse();
2515
2516         // save it on stack
2517         wxWindowNext *item = new wxWindowNext;
2518         item->win = winOld;
2519         item->next = ms_winCaptureNext;
2520         ms_winCaptureNext = item;
2521     }
2522     //else: no mouse capture to save
2523
2524     DoCaptureMouse();
2525     ms_winCaptureCurrent = (wxWindow*)this;
2526
2527     ms_winCaptureChanging = false;
2528 }
2529
2530 void wxWindowBase::ReleaseMouse()
2531 {
2532     wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(%p)"), wx_static_cast(void*, this));
2533
2534     wxASSERT_MSG( !ms_winCaptureChanging, _T("recursive ReleaseMouse call?") );
2535
2536     wxASSERT_MSG( GetCapture() == this, wxT("attempt to release mouse, but this window hasn't captured it") );
2537
2538     ms_winCaptureChanging = true;
2539
2540     DoReleaseMouse();
2541     ms_winCaptureCurrent = NULL;
2542
2543     if ( ms_winCaptureNext )
2544     {
2545         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2546         ms_winCaptureCurrent = ms_winCaptureNext->win;
2547
2548         wxWindowNext *item = ms_winCaptureNext;
2549         ms_winCaptureNext = item->next;
2550         delete item;
2551     }
2552     //else: stack is empty, no previous capture
2553
2554     ms_winCaptureChanging = false;
2555
2556     wxLogTrace(_T("mousecapture"),
2557         (const wxChar *) _T("After ReleaseMouse() mouse is captured by %p"),
2558         wx_static_cast(void*, GetCapture()));
2559 }
2560
2561 static void DoNotifyWindowAboutCaptureLost(wxWindow *win)
2562 {
2563     wxMouseCaptureLostEvent event(win->GetId());
2564     event.SetEventObject(win);
2565     if ( !win->GetEventHandler()->ProcessEvent(event) )
2566     {
2567         // windows must handle this event, otherwise the app wouldn't behave
2568         // correctly if it loses capture unexpectedly; see the discussion here:
2569         // http://sourceforge.net/tracker/index.php?func=detail&aid=1153662&group_id=9863&atid=109863
2570         // http://article.gmane.org/gmane.comp.lib.wxwidgets.devel/82376
2571         wxFAIL_MSG( _T("window that captured the mouse didn't process wxEVT_MOUSE_CAPTURE_LOST") );
2572     }
2573 }
2574
2575 /* static */
2576 void wxWindowBase::NotifyCaptureLost()
2577 {
2578     // don't do anything if capture lost was expected, i.e. resulted from
2579     // a wx call to ReleaseMouse or CaptureMouse:
2580     if ( ms_winCaptureChanging )
2581         return;
2582
2583     // if the capture was lost unexpectedly, notify every window that has
2584     // capture (on stack or current) about it and clear the stack:
2585
2586     if ( ms_winCaptureCurrent )
2587     {
2588         DoNotifyWindowAboutCaptureLost(ms_winCaptureCurrent);
2589         ms_winCaptureCurrent = NULL;
2590     }
2591
2592     while ( ms_winCaptureNext )
2593     {
2594         wxWindowNext *item = ms_winCaptureNext;
2595         ms_winCaptureNext = item->next;
2596
2597         DoNotifyWindowAboutCaptureLost(item->win);
2598
2599         delete item;
2600     }
2601 }
2602
2603 #if wxUSE_HOTKEY
2604
2605 bool
2606 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2607                              int WXUNUSED(modifiers),
2608                              int WXUNUSED(keycode))
2609 {
2610     // not implemented
2611     return false;
2612 }
2613
2614 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2615 {
2616     // not implemented
2617     return false;
2618 }
2619
2620 #endif // wxUSE_HOTKEY
2621
2622 // ----------------------------------------------------------------------------
2623 // event processing
2624 // ----------------------------------------------------------------------------
2625
2626 bool wxWindowBase::TryValidator(wxEvent& wxVALIDATOR_PARAM(event))
2627 {
2628 #if wxUSE_VALIDATORS
2629     // Can only use the validator of the window which
2630     // is receiving the event
2631     if ( event.GetEventObject() == this )
2632     {
2633         wxValidator *validator = GetValidator();
2634         if ( validator && validator->ProcessEvent(event) )
2635         {
2636             return true;
2637         }
2638     }
2639 #endif // wxUSE_VALIDATORS
2640
2641     return false;
2642 }
2643
2644 bool wxWindowBase::TryParent(wxEvent& event)
2645 {
2646     // carry on up the parent-child hierarchy if the propagation count hasn't
2647     // reached zero yet
2648     if ( event.ShouldPropagate() )
2649     {
2650         // honour the requests to stop propagation at this window: this is
2651         // used by the dialogs, for example, to prevent processing the events
2652         // from the dialog controls in the parent frame which rarely, if ever,
2653         // makes sense
2654         if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
2655         {
2656             wxWindow *parent = GetParent();
2657             if ( parent && !parent->IsBeingDeleted() )
2658             {
2659                 wxPropagateOnce propagateOnce(event);
2660
2661                 return parent->GetEventHandler()->ProcessEvent(event);
2662             }
2663         }
2664     }
2665
2666     return wxEvtHandler::TryParent(event);
2667 }
2668
2669 // ----------------------------------------------------------------------------
2670 // window relationships
2671 // ----------------------------------------------------------------------------
2672
2673 wxWindow *wxWindowBase::DoGetSibling(WindowOrder order) const
2674 {
2675     wxCHECK_MSG( GetParent(), NULL,
2676                     _T("GetPrev/NextSibling() don't work for TLWs!") );
2677
2678     wxWindowList& siblings = GetParent()->GetChildren();
2679     wxWindowList::compatibility_iterator i = siblings.Find((wxWindow *)this);
2680     wxCHECK_MSG( i, NULL, _T("window not a child of its parent?") );
2681
2682     if ( order == OrderBefore )
2683         i = i->GetPrevious();
2684     else // OrderAfter
2685         i = i->GetNext();
2686
2687     return i ? i->GetData() : NULL;
2688 }
2689
2690 // ----------------------------------------------------------------------------
2691 // keyboard navigation
2692 // ----------------------------------------------------------------------------
2693
2694 // Navigates in the specified direction inside this window
2695 bool wxWindowBase::DoNavigateIn(int flags)
2696 {
2697 #ifdef wxHAS_NATIVE_TAB_TRAVERSAL
2698     // native code doesn't process our wxNavigationKeyEvents anyhow
2699     wxUnusedVar(flags);
2700     return false;
2701 #else // !wxHAS_NATIVE_TAB_TRAVERSAL
2702     wxNavigationKeyEvent eventNav;
2703     eventNav.SetFlags(flags);
2704     eventNav.SetEventObject(FindFocus());
2705     return GetEventHandler()->ProcessEvent(eventNav);
2706 #endif // wxHAS_NATIVE_TAB_TRAVERSAL/!wxHAS_NATIVE_TAB_TRAVERSAL
2707 }
2708
2709 void wxWindowBase::DoMoveInTabOrder(wxWindow *win, WindowOrder move)
2710 {
2711     // check that we're not a top level window
2712     wxCHECK_RET( GetParent(),
2713                     _T("MoveBefore/AfterInTabOrder() don't work for TLWs!") );
2714
2715     // detect the special case when we have nothing to do anyhow and when the
2716     // code below wouldn't work
2717     if ( win == this )
2718         return;
2719
2720     // find the target window in the siblings list
2721     wxWindowList& siblings = GetParent()->GetChildren();
2722     wxWindowList::compatibility_iterator i = siblings.Find(win);
2723     wxCHECK_RET( i, _T("MoveBefore/AfterInTabOrder(): win is not a sibling") );
2724
2725     // unfortunately, when wxUSE_STL == 1 DetachNode() is not implemented so we
2726     // can't just move the node around
2727     wxWindow *self = (wxWindow *)this;
2728     siblings.DeleteObject(self);
2729     if ( move == OrderAfter )
2730     {
2731         i = i->GetNext();
2732     }
2733
2734     if ( i )
2735     {
2736         siblings.Insert(i, self);
2737     }
2738     else // OrderAfter and win was the last sibling
2739     {
2740         siblings.Append(self);
2741     }
2742 }
2743
2744 // ----------------------------------------------------------------------------
2745 // focus handling
2746 // ----------------------------------------------------------------------------
2747
2748 /*static*/ wxWindow* wxWindowBase::FindFocus()
2749 {
2750     wxWindowBase *win = DoFindFocus();
2751     return win ? win->GetMainWindowOfCompositeControl() : NULL;
2752 }
2753
2754 bool wxWindowBase::HasFocus() const
2755 {
2756     wxWindowBase *win = DoFindFocus();
2757     return win == this ||
2758            win == wxConstCast(this, wxWindowBase)->GetMainWindowOfCompositeControl();
2759 }
2760
2761 // ----------------------------------------------------------------------------
2762 // global functions
2763 // ----------------------------------------------------------------------------
2764
2765 wxWindow* wxGetTopLevelParent(wxWindow *win)
2766 {
2767     while ( win && !win->IsTopLevel() )
2768          win = win->GetParent();
2769
2770     return win;
2771 }
2772
2773 #if wxUSE_ACCESSIBILITY
2774 // ----------------------------------------------------------------------------
2775 // accessible object for windows
2776 // ----------------------------------------------------------------------------
2777
2778 // Can return either a child object, or an integer
2779 // representing the child element, starting from 1.
2780 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
2781 {
2782     wxASSERT( GetWindow() != NULL );
2783     if (!GetWindow())
2784         return wxACC_FAIL;
2785
2786     return wxACC_NOT_IMPLEMENTED;
2787 }
2788
2789 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
2790 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
2791 {
2792     wxASSERT( GetWindow() != NULL );
2793     if (!GetWindow())
2794         return wxACC_FAIL;
2795
2796     wxWindow* win = NULL;
2797     if (elementId == 0)
2798     {
2799         win = GetWindow();
2800     }
2801     else
2802     {
2803         if (elementId <= (int) GetWindow()->GetChildren().GetCount())
2804         {
2805             win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
2806         }
2807         else
2808             return wxACC_FAIL;
2809     }
2810     if (win)
2811     {
2812         rect = win->GetRect();
2813         if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
2814             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
2815         return wxACC_OK;
2816     }
2817
2818     return wxACC_NOT_IMPLEMENTED;
2819 }
2820
2821 // Navigates from fromId to toId/toObject.
2822 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
2823                              int* WXUNUSED(toId), wxAccessible** toObject)
2824 {
2825     wxASSERT( GetWindow() != NULL );
2826     if (!GetWindow())
2827         return wxACC_FAIL;
2828
2829     switch (navDir)
2830     {
2831     case wxNAVDIR_FIRSTCHILD:
2832         {
2833             if (GetWindow()->GetChildren().GetCount() == 0)
2834                 return wxACC_FALSE;
2835             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
2836             *toObject = childWindow->GetOrCreateAccessible();
2837
2838             return wxACC_OK;
2839         }
2840     case wxNAVDIR_LASTCHILD:
2841         {
2842             if (GetWindow()->GetChildren().GetCount() == 0)
2843                 return wxACC_FALSE;
2844             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
2845             *toObject = childWindow->GetOrCreateAccessible();
2846
2847             return wxACC_OK;
2848         }
2849     case wxNAVDIR_RIGHT:
2850     case wxNAVDIR_DOWN:
2851     case wxNAVDIR_NEXT:
2852         {
2853             wxWindowList::compatibility_iterator node =
2854                 wxWindowList::compatibility_iterator();
2855             if (fromId == 0)
2856             {
2857                 // Can't navigate to sibling of this window
2858                 // if we're a top-level window.
2859                 if (!GetWindow()->GetParent())
2860                     return wxACC_NOT_IMPLEMENTED;
2861
2862                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2863             }
2864             else
2865             {
2866                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2867                     node = GetWindow()->GetChildren().Item(fromId-1);
2868             }
2869
2870             if (node && node->GetNext())
2871             {
2872                 wxWindow* nextWindow = node->GetNext()->GetData();
2873                 *toObject = nextWindow->GetOrCreateAccessible();
2874                 return wxACC_OK;
2875             }
2876             else
2877                 return wxACC_FALSE;
2878         }
2879     case wxNAVDIR_LEFT:
2880     case wxNAVDIR_UP:
2881     case wxNAVDIR_PREVIOUS:
2882         {
2883             wxWindowList::compatibility_iterator node =
2884                 wxWindowList::compatibility_iterator();
2885             if (fromId == 0)
2886             {
2887                 // Can't navigate to sibling of this window
2888                 // if we're a top-level window.
2889                 if (!GetWindow()->GetParent())
2890                     return wxACC_NOT_IMPLEMENTED;
2891
2892                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2893             }
2894             else
2895             {
2896                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2897                     node = GetWindow()->GetChildren().Item(fromId-1);
2898             }
2899
2900             if (node && node->GetPrevious())
2901             {
2902                 wxWindow* previousWindow = node->GetPrevious()->GetData();
2903                 *toObject = previousWindow->GetOrCreateAccessible();
2904                 return wxACC_OK;
2905             }
2906             else
2907                 return wxACC_FALSE;
2908         }
2909     }
2910
2911     return wxACC_NOT_IMPLEMENTED;
2912 }
2913
2914 // Gets the name of the specified object.
2915 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
2916 {
2917     wxASSERT( GetWindow() != NULL );
2918     if (!GetWindow())
2919         return wxACC_FAIL;
2920
2921     wxString title;
2922
2923     // If a child, leave wxWidgets to call the function on the actual
2924     // child object.
2925     if (childId > 0)
2926         return wxACC_NOT_IMPLEMENTED;
2927
2928     // This will eventually be replaced by specialised
2929     // accessible classes, one for each kind of wxWidgets
2930     // control or window.
2931 #if wxUSE_BUTTON
2932     if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
2933         title = ((wxButton*) GetWindow())->GetLabel();
2934     else
2935 #endif
2936         title = GetWindow()->GetName();
2937
2938     if (!title.empty())
2939     {
2940         *name = title;
2941         return wxACC_OK;
2942     }
2943     else
2944         return wxACC_NOT_IMPLEMENTED;
2945 }
2946
2947 // Gets the number of children.
2948 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
2949 {
2950     wxASSERT( GetWindow() != NULL );
2951     if (!GetWindow())
2952         return wxACC_FAIL;
2953
2954     *childId = (int) GetWindow()->GetChildren().GetCount();
2955     return wxACC_OK;
2956 }
2957
2958 // Gets the specified child (starting from 1).
2959 // If *child is NULL and return value is wxACC_OK,
2960 // this means that the child is a simple element and
2961 // not an accessible object.
2962 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
2963 {
2964     wxASSERT( GetWindow() != NULL );
2965     if (!GetWindow())
2966         return wxACC_FAIL;
2967
2968     if (childId == 0)
2969     {
2970         *child = this;
2971         return wxACC_OK;
2972     }
2973
2974     if (childId > (int) GetWindow()->GetChildren().GetCount())
2975         return wxACC_FAIL;
2976
2977     wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
2978     *child = childWindow->GetOrCreateAccessible();
2979     if (*child)
2980         return wxACC_OK;
2981     else
2982         return wxACC_FAIL;
2983 }
2984
2985 // Gets the parent, or NULL.
2986 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
2987 {
2988     wxASSERT( GetWindow() != NULL );
2989     if (!GetWindow())
2990         return wxACC_FAIL;
2991
2992     wxWindow* parentWindow = GetWindow()->GetParent();
2993     if (!parentWindow)
2994     {
2995         *parent = NULL;
2996         return wxACC_OK;
2997     }
2998     else
2999     {
3000         *parent = parentWindow->GetOrCreateAccessible();
3001         if (*parent)
3002             return wxACC_OK;
3003         else
3004             return wxACC_FAIL;
3005     }
3006 }
3007
3008 // Performs the default action. childId is 0 (the action for this object)
3009 // or > 0 (the action for a child).
3010 // Return wxACC_NOT_SUPPORTED if there is no default action for this
3011 // window (e.g. an edit control).
3012 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
3013 {
3014     wxASSERT( GetWindow() != NULL );
3015     if (!GetWindow())
3016         return wxACC_FAIL;
3017
3018     return wxACC_NOT_IMPLEMENTED;
3019 }
3020
3021 // Gets the default action for this object (0) or > 0 (the action for a child).
3022 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
3023 // string if there is no action.
3024 // The retrieved string describes the action that is performed on an object,
3025 // not what the object does as a result. For example, a toolbar button that prints
3026 // a document has a default action of "Press" rather than "Prints the current document."
3027 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
3028 {
3029     wxASSERT( GetWindow() != NULL );
3030     if (!GetWindow())
3031         return wxACC_FAIL;
3032
3033     return wxACC_NOT_IMPLEMENTED;
3034 }
3035
3036 // Returns the description for this object or a child.
3037 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
3038 {
3039     wxASSERT( GetWindow() != NULL );
3040     if (!GetWindow())
3041         return wxACC_FAIL;
3042
3043     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3044     if (!ht.empty())
3045     {
3046         *description = ht;
3047         return wxACC_OK;
3048     }
3049     return wxACC_NOT_IMPLEMENTED;
3050 }
3051
3052 // Returns help text for this object or a child, similar to tooltip text.
3053 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
3054 {
3055     wxASSERT( GetWindow() != NULL );
3056     if (!GetWindow())
3057         return wxACC_FAIL;
3058
3059     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3060     if (!ht.empty())
3061     {
3062         *helpText = ht;
3063         return wxACC_OK;
3064     }
3065     return wxACC_NOT_IMPLEMENTED;
3066 }
3067
3068 // Returns the keyboard shortcut for this object or child.
3069 // Return e.g. ALT+K
3070 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
3071 {
3072     wxASSERT( GetWindow() != NULL );
3073     if (!GetWindow())
3074         return wxACC_FAIL;
3075
3076     return wxACC_NOT_IMPLEMENTED;
3077 }
3078
3079 // Returns a role constant.
3080 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
3081 {
3082     wxASSERT( GetWindow() != NULL );
3083     if (!GetWindow())
3084         return wxACC_FAIL;
3085
3086     // If a child, leave wxWidgets to call the function on the actual
3087     // child object.
3088     if (childId > 0)
3089         return wxACC_NOT_IMPLEMENTED;
3090
3091     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3092         return wxACC_NOT_IMPLEMENTED;
3093 #if wxUSE_STATUSBAR
3094     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3095         return wxACC_NOT_IMPLEMENTED;
3096 #endif
3097 #if wxUSE_TOOLBAR
3098     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3099         return wxACC_NOT_IMPLEMENTED;
3100 #endif
3101
3102     //*role = wxROLE_SYSTEM_CLIENT;
3103     *role = wxROLE_SYSTEM_CLIENT;
3104     return wxACC_OK;
3105
3106     #if 0
3107     return wxACC_NOT_IMPLEMENTED;
3108     #endif
3109 }
3110
3111 // Returns a state constant.
3112 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
3113 {
3114     wxASSERT( GetWindow() != NULL );
3115     if (!GetWindow())
3116         return wxACC_FAIL;
3117
3118     // If a child, leave wxWidgets to call the function on the actual
3119     // child object.
3120     if (childId > 0)
3121         return wxACC_NOT_IMPLEMENTED;
3122
3123     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3124         return wxACC_NOT_IMPLEMENTED;
3125
3126 #if wxUSE_STATUSBAR
3127     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3128         return wxACC_NOT_IMPLEMENTED;
3129 #endif
3130 #if wxUSE_TOOLBAR
3131     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3132         return wxACC_NOT_IMPLEMENTED;
3133 #endif
3134
3135     *state = 0;
3136     return wxACC_OK;
3137
3138     #if 0
3139     return wxACC_NOT_IMPLEMENTED;
3140     #endif
3141 }
3142
3143 // Returns a localized string representing the value for the object
3144 // or child.
3145 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
3146 {
3147     wxASSERT( GetWindow() != NULL );
3148     if (!GetWindow())
3149         return wxACC_FAIL;
3150
3151     return wxACC_NOT_IMPLEMENTED;
3152 }
3153
3154 // Selects the object or child.
3155 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
3156 {
3157     wxASSERT( GetWindow() != NULL );
3158     if (!GetWindow())
3159         return wxACC_FAIL;
3160
3161     return wxACC_NOT_IMPLEMENTED;
3162 }
3163
3164 // Gets the window with the keyboard focus.
3165 // If childId is 0 and child is NULL, no object in
3166 // this subhierarchy has the focus.
3167 // If this object has the focus, child should be 'this'.
3168 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
3169 {
3170     wxASSERT( GetWindow() != NULL );
3171     if (!GetWindow())
3172         return wxACC_FAIL;
3173
3174     return wxACC_NOT_IMPLEMENTED;
3175 }
3176
3177 #if wxUSE_VARIANT
3178 // Gets a variant representing the selected children
3179 // of this object.
3180 // Acceptable values:
3181 // - a null variant (IsNull() returns true)
3182 // - a list variant (GetType() == wxT("list")
3183 // - an integer representing the selected child element,
3184 //   or 0 if this object is selected (GetType() == wxT("long")
3185 // - a "void*" pointer to a wxAccessible child object
3186 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
3187 {
3188     wxASSERT( GetWindow() != NULL );
3189     if (!GetWindow())
3190         return wxACC_FAIL;
3191
3192     return wxACC_NOT_IMPLEMENTED;
3193 }
3194 #endif // wxUSE_VARIANT
3195
3196 #endif // wxUSE_ACCESSIBILITY
3197
3198 // ----------------------------------------------------------------------------
3199 // RTL support
3200 // ----------------------------------------------------------------------------
3201
3202 wxCoord
3203 wxWindowBase::AdjustForLayoutDirection(wxCoord x,
3204                                        wxCoord width,
3205                                        wxCoord widthTotal) const
3206 {
3207     if ( GetLayoutDirection() == wxLayout_RightToLeft )
3208     {
3209         x = widthTotal - x - width;
3210     }
3211
3212     return x;
3213 }
3214
3215