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     m_freeId = false;
 177
 178 #if wxUSE_DRAG_AND_DROP
 179     m_dropTarget = (wxDropTarget *)NULL;
 180 #endif // wxUSE_DRAG_AND_DROP
 181
 182 #if wxUSE_TOOLTIPS
 183     m_tooltip = (wxToolTip *)NULL;
 184 #endif // wxUSE_TOOLTIPS
 185
 186 #if wxUSE_CARET
 187     m_caret = (wxCaret *)NULL;
 188 #endif // wxUSE_CARET
 189
 190 #if wxUSE_PALETTE
 191     m_hasCustomPalette = false;
 192 #endif // wxUSE_PALETTE
 193
 194 #if wxUSE_ACCESSIBILITY
 195     m_accessible = NULL;
 196 #endif
 197
 198     m_virtualSize = wxDefaultSize;
 199
 200     m_scrollHelper = (wxScrollHelper *) NULL;
 201
 202     m_windowVariant = wxWINDOW_VARIANT_NORMAL;
 203 #if wxUSE_SYSTEM_OPTIONS
 204     if ( wxSystemOptions::HasOption(wxWINDOW_DEFAULT_VARIANT) )
 205     {
 206        m_windowVariant = (wxWindowVariant) wxSystemOptions::GetOptionInt( wxWINDOW_DEFAULT_VARIANT ) ;
 207     }
 208 #endif
 209
 210     // Whether we're using the current theme for this window (wxGTK only for now)
 211     m_themeEnabled = false;
 212
 213     // VZ: this one shouldn't exist...
 214     m_isBeingDeleted = false;
 215
 216     m_freezeCount = 0;
 217 }
 218
 219 // common part of window creation process
 220 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 221                               wxWindowID id,
 222                               const wxPoint& WXUNUSED(pos),
 223                               const wxSize& WXUNUSED(size),
 224                               long style,
 225                               const wxValidator& wxVALIDATOR_PARAM(validator),
 226                               const wxString& name)
 227 {
 228 #if wxUSE_STATBOX
 229     // wxGTK doesn't allow to create controls with static box as the parent so
 230     // this will result in a crash when the program is ported to wxGTK so warn
 231     // the user about it
 232
 233     // if you get this assert, the correct solution is to create the controls
 234     // as siblings of the static box
 235     wxASSERT_MSG( !parent || !wxDynamicCast(parent, wxStaticBox),
 236                   _T("wxStaticBox can't be used as a window parent!") );
 237 #endif // wxUSE_STATBOX
 238
 239     // ids are limited to 16 bits under MSW so if you care about portability,
 240     // it's not a good idea to use ids out of this range (and negative ids are
 241     // reserved for wxWidgets own usage)
 242     wxASSERT_MSG( id == wxID_ANY || (id >= 0 && id < 32767) ||
 243                   (id >= wxID_AUTO_LOWEST && id <= wxID_AUTO_HIGHEST),
 244                   _T("invalid id value") );
 245
 246     // generate a new id if the user doesn't care about it
 247     if ( id == wxID_ANY )
 248     {
 249         m_windowId = NewControlId();
 250
 251         // remember to call ReleaseControlId() when this window is destroyed
 252         m_freeId = true;
 253     }
 254     else // valid id specified
 255     {
 256         m_windowId = id;
 257     }
 258
 259     // don't use SetWindowStyleFlag() here, this function should only be called
 260     // to change the flag after creation as it tries to reflect the changes in
 261     // flags by updating the window dynamically and we don't need this here
 262     m_windowStyle = style;
 263
 264     SetName(name);
 265     SetParent(parent);
 266
 267 #if wxUSE_VALIDATORS
 268     SetValidator(validator);
 269 #endif // wxUSE_VALIDATORS
 270
 271     // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
 272     // have it too - like this it's possible to set it only in the top level
 273     // dialog/frame and all children will inherit it by defult
 274     if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
 275     {
 276         SetExtraStyle(GetExtraStyle() | wxWS_EX_VALIDATE_RECURSIVELY);
 277     }
 278
 279     return true;
 280 }
 281
 282 bool wxWindowBase::ToggleWindowStyle(int flag)
 283 {
 284     wxASSERT_MSG( flag, _T("flags with 0 value can't be toggled") );
 285
 286     bool rc;
 287     long style = GetWindowStyleFlag();
 288     if ( style & flag )
 289     {
 290         style &= ~flag;
 291         rc = false;
 292     }
 293     else // currently off
 294     {
 295         style |= flag;
 296         rc = true;
 297     }
 298
 299     SetWindowStyleFlag(style);
 300
 301     return rc;
 302 }
 303
 304 // ----------------------------------------------------------------------------
 305 // destruction
 306 // ----------------------------------------------------------------------------
 307
 308 // common clean up
 309 wxWindowBase::~wxWindowBase()
 310 {
 311     wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
 312
 313     // mark the id as unused if we allocated it for this control
 314     if ( m_freeId )
 315         ReleaseControlId(m_windowId);
 316
 317     // FIXME if these 2 cases result from programming errors in the user code
 318     //       we should probably assert here instead of silently fixing them
 319
 320     // Just in case the window has been Closed, but we're then deleting
 321     // immediately: don't leave dangling pointers.
 322     wxPendingDelete.DeleteObject(this);
 323
 324     // Just in case we've loaded a top-level window via LoadNativeDialog but
 325     // we weren't a dialog class
 326     wxTopLevelWindows.DeleteObject((wxWindow*)this);
 327
 328     // The associated popup menu can still be alive, disassociate from it in
 329     // this case
 330     if ( wxCurrentPopupMenu && wxCurrentPopupMenu->GetInvokingWindow() == this )
 331         wxCurrentPopupMenu->SetInvokingWindow(NULL);
 332
 333     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 334
 335     // notify the parent about this window destruction
 336     if ( m_parent )
 337         m_parent->RemoveChild(this);
 338
 339 #if wxUSE_CARET
 340     delete m_caret;
 341 #endif // wxUSE_CARET
 342
 343 #if wxUSE_VALIDATORS
 344     delete m_windowValidator;
 345 #endif // wxUSE_VALIDATORS
 346
 347 #if wxUSE_CONSTRAINTS
 348     // Have to delete constraints/sizer FIRST otherwise sizers may try to look
 349     // at deleted windows as they delete themselves.
 350     DeleteRelatedConstraints();
 351
 352     if ( m_constraints )
 353     {
 354         // This removes any dangling pointers to this window in other windows'
 355         // constraintsInvolvedIn lists.
 356         UnsetConstraints(m_constraints);
 357         delete m_constraints;
 358         m_constraints = NULL;
 359     }
 360 #endif // wxUSE_CONSTRAINTS
 361
 362     if ( m_containingSizer )
 363         m_containingSizer->Detach( (wxWindow*)this );
 364
 365     delete m_windowSizer;
 366
 367 #if wxUSE_DRAG_AND_DROP
 368     delete m_dropTarget;
 369 #endif // wxUSE_DRAG_AND_DROP
 370
 371 #if wxUSE_TOOLTIPS
 372     delete m_tooltip;
 373 #endif // wxUSE_TOOLTIPS
 374
 375 #if wxUSE_ACCESSIBILITY
 376     delete m_accessible;
 377 #endif
 378 }
 379
 380 void wxWindowBase::SendDestroyEvent()
 381 {
 382     wxWindowDestroyEvent event;
 383     event.SetEventObject(this);
 384     event.SetId(GetId());
 385     GetEventHandler()->ProcessEvent(event);
 386 }
 387
 388 bool wxWindowBase::Destroy()
 389 {
 390     delete this;
 391
 392     return true;
 393 }
 394
 395 bool wxWindowBase::Close(bool force)
 396 {
 397     wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
 398     event.SetEventObject(this);
 399     event.SetCanVeto(!force);
 400
 401     // return false if window wasn't closed because the application vetoed the
 402     // close event
 403     return GetEventHandler()->ProcessEvent(event) && !event.GetVeto();
 404 }
 405
 406 bool wxWindowBase::DestroyChildren()
 407 {
 408     wxWindowList::compatibility_iterator node;
 409     for ( ;; )
 410     {
 411         // we iterate until the list becomes empty
 412         node = GetChildren().GetFirst();
 413         if ( !node )
 414             break;
 415
 416         wxWindow *child = node->GetData();
 417
 418         // note that we really want to call delete and not ->Destroy() here
 419         // because we want to delete the child immediately, before we are
 420         // deleted, and delayed deletion would result in problems as our (top
 421         // level) child could outlive its parent
 422         delete child;
 423
 424         wxASSERT_MSG( !GetChildren().Find(child),
 425                       wxT("child didn't remove itself using RemoveChild()") );
 426     }
 427
 428     return true;
 429 }
 430
 431 // ----------------------------------------------------------------------------
 432 // size/position related methods
 433 // ----------------------------------------------------------------------------
 434
 435 // centre the window with respect to its parent in either (or both) directions
 436 void wxWindowBase::DoCentre(int dir)
 437 {
 438     wxCHECK_RET( !(dir & wxCENTRE_ON_SCREEN) && GetParent(),
 439                  _T("this method only implements centering child windows") );
 440
 441     SetSize(GetRect().CentreIn(GetParent()->GetClientSize(), dir));
 442 }
 443
 444 // fits the window around the children
 445 void wxWindowBase::Fit()
 446 {
 447     if ( !GetChildren().empty() )
 448     {
 449         SetSize(GetBestSize());
 450     }
 451     //else: do nothing if we have no children
 452 }
 453
 454 // fits virtual size (ie. scrolled area etc.) around children
 455 void wxWindowBase::FitInside()
 456 {
 457     if ( GetChildren().GetCount() > 0 )
 458     {
 459         SetVirtualSize( GetBestVirtualSize() );
 460     }
 461 }
 462
 463 // On Mac, scrollbars are explicitly children.
 464 #ifdef __WXMAC__
 465 static bool wxHasRealChildren(const wxWindowBase* win)
 466 {
 467     int realChildCount = 0;
 468
 469     for ( wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
 470           node;
 471           node = node->GetNext() )
 472     {
 473         wxWindow *win = node->GetData();
 474         if ( !win->IsTopLevel() && win->IsShown() && !win->IsKindOf(CLASSINFO(wxScrollBar)))
 475             realChildCount ++;
 476     }
 477     return (realChildCount > 0);
 478 }
 479 #endif
 480
 481 void wxWindowBase::InvalidateBestSize()
 482 {
 483     m_bestSizeCache = wxDefaultSize;
 484
 485     // parent's best size calculation may depend on its children's
 486     // as long as child window we are in is not top level window itself
 487     // (because the TLW size is never resized automatically)
 488     // so let's invalidate it as well to be safe:
 489     if (m_parent && !IsTopLevel())
 490         m_parent->InvalidateBestSize();
 491 }
 492
 493 // return the size best suited for the current window
 494 wxSize wxWindowBase::DoGetBestSize() const
 495 {
 496     wxSize best;
 497
 498     if ( m_windowSizer )
 499     {
 500         best = m_windowSizer->GetMinSize();
 501     }
 502 #if wxUSE_CONSTRAINTS
 503     else if ( m_constraints )
 504     {
 505         wxConstCast(this, wxWindowBase)->SatisfyConstraints();
 506
 507         // our minimal acceptable size is such that all our windows fit inside
 508         int maxX = 0,
 509             maxY = 0;
 510
 511         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 512               node;
 513               node = node->GetNext() )
 514         {
 515             wxLayoutConstraints *c = node->GetData()->GetConstraints();
 516             if ( !c )
 517             {
 518                 // it's not normal that we have an unconstrained child, but
 519                 // what can we do about it?
 520                 continue;
 521             }
 522
 523             int x = c->right.GetValue(),
 524                 y = c->bottom.GetValue();
 525
 526             if ( x > maxX )
 527                 maxX = x;
 528
 529             if ( y > maxY )
 530                 maxY = y;
 531
 532             // TODO: we must calculate the overlaps somehow, otherwise we
 533             //       will never return a size bigger than the current one :-(
 534         }
 535
 536         best = wxSize(maxX, maxY);
 537     }
 538 #endif // wxUSE_CONSTRAINTS
 539     else if ( !GetChildren().empty()
 540 #ifdef __WXMAC__
 541               && wxHasRealChildren(this)
 542 #endif
 543               )
 544     {
 545         // our minimal acceptable size is such that all our visible child
 546         // windows fit inside
 547         int maxX = 0,
 548             maxY = 0;
 549
 550         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 551               node;
 552               node = node->GetNext() )
 553         {
 554             wxWindow *win = node->GetData();
 555             if ( win->IsTopLevel()
 556                     || !win->IsShown()
 557 #if wxUSE_STATUSBAR
 558                         || wxDynamicCast(win, wxStatusBar)
 559 #endif // wxUSE_STATUSBAR
 560                )
 561             {
 562                 // dialogs and frames lie in different top level windows -
 563                 // don't deal with them here; as for the status bars, they
 564                 // don't lie in the client area at all
 565                 continue;
 566             }
 567
 568             int wx, wy, ww, wh;
 569             win->GetPosition(&wx, &wy);
 570
 571             // if the window hadn't been positioned yet, assume that it is in
 572             // the origin
 573             if ( wx == wxDefaultCoord )
 574                 wx = 0;
 575             if ( wy == wxDefaultCoord )
 576                 wy = 0;
 577
 578             win->GetSize(&ww, &wh);
 579             if ( wx + ww > maxX )
 580                 maxX = wx + ww;
 581             if ( wy + wh > maxY )
 582                 maxY = wy + wh;
 583         }
 584
 585         best = wxSize(maxX, maxY);
 586     }
 587     else // ! has children
 588     {
 589         // for a generic window there is no natural best size so, if the
 590         // minimal size is not set, use the current size but take care to
 591         // remember it as minimal size for the next time because our best size
 592         // should be constant: otherwise we could get into a situation when the
 593         // window is initially at some size, then expanded to a larger size and
 594         // then, when the containing window is shrunk back (because our initial
 595         // best size had been used for computing the parent min size), we can't
 596         // be shrunk back any more because our best size is now bigger
 597         wxSize size = GetMinSize();
 598         if ( !size.IsFullySpecified() )
 599         {
 600             size.SetDefaults(GetSize());
 601             wxConstCast(this, wxWindowBase)->SetMinSize(size);
 602         }
 603
 604         // return as-is, unadjusted by the client size difference.
 605         return size;
 606     }
 607
 608     // Add any difference between size and client size
 609     wxSize diff = GetSize() - GetClientSize();
 610     best.x += wxMax(0, diff.x);
 611     best.y += wxMax(0, diff.y);
 612
 613     return best;
 614 }
 615
 616 // helper of GetWindowBorderSize(): as many ports don't implement support for
 617 // wxSYS_BORDER/EDGE_X/Y metrics in their wxSystemSettings, use hard coded
 618 // fallbacks in this case
 619 static int wxGetMetricOrDefault(wxSystemMetric what)
 620 {
 621     int rc = wxSystemSettings::GetMetric(what);
 622     if ( rc == -1 )
 623     {
 624         switch ( what )
 625         {
 626             case wxSYS_BORDER_X:
 627             case wxSYS_BORDER_Y:
 628                 // 2D border is by default 1 pixel wide
 629                 rc = 1;
 630                 break;
 631
 632             case wxSYS_EDGE_X:
 633             case wxSYS_EDGE_Y:
 634                 // 3D borders are by default 2 pixels
 635                 rc = 2;
 636                 break;
 637
 638             default:
 639                 wxFAIL_MSG( _T("unexpected wxGetMetricOrDefault() argument") );
 640                 rc = 0;
 641         }
 642     }
 643
 644     return rc;
 645 }
 646
 647 wxSize wxWindowBase::GetWindowBorderSize() const
 648 {
 649     wxSize size;
 650
 651     switch ( GetBorder() )
 652     {
 653         case wxBORDER_NONE:
 654             // nothing to do, size is already (0, 0)
 655             break;
 656
 657         case wxBORDER_SIMPLE:
 658         case wxBORDER_STATIC:
 659             size.x = wxGetMetricOrDefault(wxSYS_BORDER_X);
 660             size.y = wxGetMetricOrDefault(wxSYS_BORDER_Y);
 661             break;
 662
 663         case wxBORDER_SUNKEN:
 664         case wxBORDER_RAISED:
 665             size.x = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_X),
 666                            wxGetMetricOrDefault(wxSYS_BORDER_X));
 667             size.y = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_Y),
 668                            wxGetMetricOrDefault(wxSYS_BORDER_Y));
 669             break;
 670
 671         case wxBORDER_DOUBLE:
 672             size.x = wxGetMetricOrDefault(wxSYS_EDGE_X) +
 673                         wxGetMetricOrDefault(wxSYS_BORDER_X);
 674             size.y = wxGetMetricOrDefault(wxSYS_EDGE_Y) +
 675                         wxGetMetricOrDefault(wxSYS_BORDER_Y);
 676             break;
 677
 678         default:
 679             wxFAIL_MSG(_T("Unknown border style."));
 680             break;
 681     }
 682
 683     // we have borders on both sides
 684     return size*2;
 685 }
 686
 687 wxSize wxWindowBase::GetEffectiveMinSize() const
 688 {
 689     // merge the best size with the min size, giving priority to the min size
 690     wxSize min = GetMinSize();
 691     if (min.x == wxDefaultCoord || min.y == wxDefaultCoord)
 692     {
 693         wxSize best = GetBestSize();
 694         if (min.x == wxDefaultCoord) min.x =  best.x;
 695         if (min.y == wxDefaultCoord) min.y =  best.y;
 696     }
 697     return min;
 698 }
 699
 700
 701 void wxWindowBase::SetInitialSize(const wxSize& size)
 702 {
 703     // Set the min size to the size passed in.  This will usually either be
 704     // wxDefaultSize or the size passed to this window's ctor/Create function.
 705     SetMinSize(size);
 706
 707     // Merge the size with the best size if needed
 708     wxSize best = GetEffectiveMinSize();
 709
 710     // If the current size doesn't match then change it
 711     if (GetSize() != best)
 712         SetSize(best);
 713 }
 714
 715
 716 // by default the origin is not shifted
 717 wxPoint wxWindowBase::GetClientAreaOrigin() const
 718 {
 719     return wxPoint(0,0);
 720 }
 721
 722 void wxWindowBase::SetWindowVariant( wxWindowVariant variant )
 723 {
 724     if ( m_windowVariant != variant )
 725     {
 726         m_windowVariant = variant;
 727
 728         DoSetWindowVariant(variant);
 729     }
 730 }
 731
 732 void wxWindowBase::DoSetWindowVariant( wxWindowVariant variant )
 733 {
 734     // adjust the font height to correspond to our new variant (notice that
 735     // we're only called if something really changed)
 736     wxFont font = GetFont();
 737     int size = font.GetPointSize();
 738     switch ( variant )
 739     {
 740         case wxWINDOW_VARIANT_NORMAL:
 741             break;
 742
 743         case wxWINDOW_VARIANT_SMALL:
 744             size *= 3;
 745             size /= 4;
 746             break;
 747
 748         case wxWINDOW_VARIANT_MINI:
 749             size *= 2;
 750             size /= 3;
 751             break;
 752
 753         case wxWINDOW_VARIANT_LARGE:
 754             size *= 5;
 755             size /= 4;
 756             break;
 757
 758         default:
 759             wxFAIL_MSG(_T("unexpected window variant"));
 760             break;
 761     }
 762
 763     font.SetPointSize(size);
 764     SetFont(font);
 765 }
 766
 767 void wxWindowBase::DoSetSizeHints( int minW, int minH,
 768                                    int maxW, int maxH,
 769                                    int WXUNUSED(incW), int WXUNUSED(incH) )
 770 {
 771     wxCHECK_RET( (minW == wxDefaultCoord || maxW == wxDefaultCoord || minW <= maxW) &&
 772                     (minH == wxDefaultCoord || maxH == wxDefaultCoord || minH <= maxH),
 773                  _T("min width/height must be less than max width/height!") );
 774
 775     m_minWidth = minW;
 776     m_maxWidth = maxW;
 777     m_minHeight = minH;
 778     m_maxHeight = maxH;
 779 }
 780
 781
 782 #if WXWIN_COMPATIBILITY_2_8
 783 void wxWindowBase::SetVirtualSizeHints(int WXUNUSED(minW), int WXUNUSED(minH),
 784                                        int WXUNUSED(maxW), int WXUNUSED(maxH))
 785 {
 786 }
 787
 788 void wxWindowBase::SetVirtualSizeHints(const wxSize& WXUNUSED(minsize),
 789                                        const wxSize& WXUNUSED(maxsize))
 790 {
 791 }
 792 #endif // WXWIN_COMPATIBILITY_2_8
 793
 794 void wxWindowBase::DoSetVirtualSize( int x, int y )
 795 {
 796     m_virtualSize = wxSize(x, y);
 797 }
 798
 799 wxSize wxWindowBase::DoGetVirtualSize() const
 800 {
 801     // we should use the entire client area so if it is greater than our
 802     // virtual size, expand it to fit (otherwise if the window is big enough we
 803     // wouldn't be using parts of it)
 804     wxSize size = GetClientSize();
 805     if ( m_virtualSize.x > size.x )
 806         size.x = m_virtualSize.x;
 807
 808     if ( m_virtualSize.y >= size.y )
 809         size.y = m_virtualSize.y;
 810
 811     return size;
 812 }
 813
 814 void wxWindowBase::DoGetScreenPosition(int *x, int *y) const
 815 {
 816     // screen position is the same as (0, 0) in client coords for non TLWs (and
 817     // TLWs override this method)
 818     if ( x )
 819         *x = 0;
 820     if ( y )
 821         *y = 0;
 822
 823     ClientToScreen(x, y);
 824 }
 825
 826 // ----------------------------------------------------------------------------
 827 // show/hide/enable/disable the window
 828 // ----------------------------------------------------------------------------
 829
 830 bool wxWindowBase::Show(bool show)
 831 {
 832     if ( show != m_isShown )
 833     {
 834         m_isShown = show;
 835
 836         return true;
 837     }
 838     else
 839     {
 840         return false;
 841     }
 842 }
 843
 844 bool wxWindowBase::IsEnabled() const
 845 {
 846     return IsThisEnabled() && (IsTopLevel() || !GetParent() || GetParent()->IsEnabled());
 847 }
 848
 849 void wxWindowBase::NotifyWindowOnEnableChange(bool enabled)
 850 {
 851 #ifndef wxHAS_NATIVE_ENABLED_MANAGEMENT
 852     DoEnable(enabled);
 853 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 854
 855     OnEnabled(enabled);
 856
 857     // If we are top-level then the logic doesn't apply - otherwise
 858     // showing a modal dialog would result in total greying out (and ungreying
 859     // out later) of everything which would be really ugly
 860     if ( IsTopLevel() )
 861         return;
 862
 863     for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 864           node;
 865           node = node->GetNext() )
 866     {
 867         wxWindowBase * const child = node->GetData();
 868         if ( !child->IsTopLevel() && child->IsThisEnabled() )
 869             child->NotifyWindowOnEnableChange(enabled);
 870     }
 871 }
 872
 873 bool wxWindowBase::Enable(bool enable)
 874 {
 875     if ( enable == IsThisEnabled() )
 876         return false;
 877
 878     m_isEnabled = enable;
 879
 880 #ifdef wxHAS_NATIVE_ENABLED_MANAGEMENT
 881     DoEnable(enable);
 882 #else // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 883     wxWindowBase * const parent = GetParent();
 884     if( !IsTopLevel() && parent && !parent->IsEnabled() )
 885     {
 886         return true;
 887     }
 888 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 889
 890     NotifyWindowOnEnableChange(enable);
 891
 892     return true;
 893 }
 894
 895 bool wxWindowBase::IsShownOnScreen() const
 896 {
 897     // A window is shown on screen if it itself is shown and so are all its
 898     // parents. But if a window is toplevel one, then its always visible on
 899     // screen if IsShown() returns true, even if it has a hidden parent.
 900     return IsShown() &&
 901            (IsTopLevel() || GetParent() == NULL || GetParent()->IsShownOnScreen());
 902 }
 903
 904 // ----------------------------------------------------------------------------
 905 // RTTI
 906 // ----------------------------------------------------------------------------
 907
 908 bool wxWindowBase::IsTopLevel() const
 909 {
 910     return false;
 911 }
 912
 913 // ----------------------------------------------------------------------------
 914 // reparenting the window
 915 // ----------------------------------------------------------------------------
 916
 917 void wxWindowBase::AddChild(wxWindowBase *child)
 918 {
 919     wxCHECK_RET( child, wxT("can't add a NULL child") );
 920
 921     // this should never happen and it will lead to a crash later if it does
 922     // because RemoveChild() will remove only one node from the children list
 923     // and the other(s) one(s) will be left with dangling pointers in them
 924     wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), _T("AddChild() called twice") );
 925
 926     GetChildren().Append((wxWindow*)child);
 927     child->SetParent(this);
 928 }
 929
 930 void wxWindowBase::RemoveChild(wxWindowBase *child)
 931 {
 932     wxCHECK_RET( child, wxT("can't remove a NULL child") );
 933
 934     GetChildren().DeleteObject((wxWindow *)child);
 935     child->SetParent(NULL);
 936 }
 937
 938 bool wxWindowBase::Reparent(wxWindowBase *newParent)
 939 {
 940     wxWindow *oldParent = GetParent();
 941     if ( newParent == oldParent )
 942     {
 943         // nothing done
 944         return false;
 945     }
 946
 947     const bool oldEnabledState = IsEnabled();
 948
 949     // unlink this window from the existing parent.
 950     if ( oldParent )
 951     {
 952         oldParent->RemoveChild(this);
 953     }
 954     else
 955     {
 956         wxTopLevelWindows.DeleteObject((wxWindow *)this);
 957     }
 958
 959     // add it to the new one
 960     if ( newParent )
 961     {
 962         newParent->AddChild(this);
 963     }
 964     else
 965     {
 966         wxTopLevelWindows.Append((wxWindow *)this);
 967     }
 968
 969     // We need to notify window (and its subwindows) if by changing the parent
 970     // we also change our enabled/disabled status.
 971     const bool newEnabledState = IsEnabled();
 972     if ( newEnabledState != oldEnabledState )
 973     {
 974         NotifyWindowOnEnableChange(newEnabledState);
 975     }
 976
 977     return true;
 978 }
 979
 980 // ----------------------------------------------------------------------------
 981 // event handler stuff
 982 // ----------------------------------------------------------------------------
 983
 984 void wxWindowBase::PushEventHandler(wxEvtHandler *handler)
 985 {
 986     wxEvtHandler *handlerOld = GetEventHandler();
 987
 988     handler->SetNextHandler(handlerOld);
 989
 990     if ( handlerOld )
 991         GetEventHandler()->SetPreviousHandler(handler);
 992
 993     SetEventHandler(handler);
 994 }
 995
 996 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
 997 {
 998     wxEvtHandler *handlerA = GetEventHandler();
 999     if ( handlerA )
1000     {
1001         wxEvtHandler *handlerB = handlerA->GetNextHandler();
1002         handlerA->SetNextHandler((wxEvtHandler *)NULL);
1003
1004         if ( handlerB )
1005             handlerB->SetPreviousHandler((wxEvtHandler *)NULL);
1006         SetEventHandler(handlerB);
1007
1008         if ( deleteHandler )
1009         {
1010             delete handlerA;
1011             handlerA = (wxEvtHandler *)NULL;
1012         }
1013     }
1014
1015     return handlerA;
1016 }
1017
1018 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handler)
1019 {
1020     wxCHECK_MSG( handler, false, _T("RemoveEventHandler(NULL) called") );
1021
1022     wxEvtHandler *handlerPrev = NULL,
1023                  *handlerCur = GetEventHandler();
1024     while ( handlerCur )
1025     {
1026         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
1027
1028         if ( handlerCur == handler )
1029         {
1030             if ( handlerPrev )
1031             {
1032                 handlerPrev->SetNextHandler(handlerNext);
1033             }
1034             else
1035             {
1036                 SetEventHandler(handlerNext);
1037             }
1038
1039             if ( handlerNext )
1040             {
1041                 handlerNext->SetPreviousHandler ( handlerPrev );
1042             }
1043
1044             handler->SetNextHandler(NULL);
1045             handler->SetPreviousHandler(NULL);
1046
1047             return true;
1048         }
1049
1050         handlerPrev = handlerCur;
1051         handlerCur = handlerNext;
1052     }
1053
1054     wxFAIL_MSG( _T("where has the event handler gone?") );
1055
1056     return false;
1057 }
1058
1059 bool wxWindowBase::HandleWindowEvent(wxEvent& event) const
1060 {
1061     return GetEventHandler()->SafelyProcessEvent(event);
1062 }
1063
1064 // ----------------------------------------------------------------------------
1065 // colours, fonts &c
1066 // ----------------------------------------------------------------------------
1067
1068 void wxWindowBase::InheritAttributes()
1069 {
1070     const wxWindowBase * const parent = GetParent();
1071     if ( !parent )
1072         return;
1073
1074     // we only inherit attributes which had been explicitly set for the parent
1075     // which ensures that this only happens if the user really wants it and
1076     // not by default which wouldn't make any sense in modern GUIs where the
1077     // controls don't all use the same fonts (nor colours)
1078     if ( parent->m_inheritFont && !m_hasFont )
1079         SetFont(parent->GetFont());
1080
1081     // in addition, there is a possibility to explicitly forbid inheriting
1082     // colours at each class level by overriding ShouldInheritColours()
1083     if ( ShouldInheritColours() )
1084     {
1085         if ( parent->m_inheritFgCol && !m_hasFgCol )
1086             SetForegroundColour(parent->GetForegroundColour());
1087
1088         // inheriting (solid) background colour is wrong as it totally breaks
1089         // any kind of themed backgrounds
1090         //
1091         // instead, the controls should use the same background as their parent
1092         // (ideally by not drawing it at all)
1093 #if 0
1094         if ( parent->m_inheritBgCol && !m_hasBgCol )
1095             SetBackgroundColour(parent->GetBackgroundColour());
1096 #endif // 0
1097     }
1098 }
1099
1100 /* static */ wxVisualAttributes
1101 wxWindowBase::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1102 {
1103     // it is important to return valid values for all attributes from here,
1104     // GetXXX() below rely on this
1105     wxVisualAttributes attrs;
1106     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
1107     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
1108
1109     // On Smartphone/PocketPC, wxSYS_COLOUR_WINDOW is a better reflection of
1110     // the usual background colour than wxSYS_COLOUR_BTNFACE.
1111     // It's a pity that wxSYS_COLOUR_WINDOW isn't always a suitable background
1112     // colour on other platforms.
1113
1114 #if defined(__WXWINCE__) && (defined(__SMARTPHONE__) || defined(__POCKETPC__))
1115     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1116 #else
1117     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
1118 #endif
1119     return attrs;
1120 }
1121
1122 wxColour wxWindowBase::GetBackgroundColour() const
1123 {
1124     if ( !m_backgroundColour.IsOk() )
1125     {
1126         wxASSERT_MSG( !m_hasBgCol, _T("we have invalid explicit bg colour?") );
1127
1128         // get our default background colour
1129         wxColour colBg = GetDefaultAttributes().colBg;
1130
1131         // we must return some valid colour to avoid redoing this every time
1132         // and also to avoid surprizing the applications written for older
1133         // wxWidgets versions where GetBackgroundColour() always returned
1134         // something -- so give them something even if it doesn't make sense
1135         // for this window (e.g. it has a themed background)
1136         if ( !colBg.Ok() )
1137             colBg = GetClassDefaultAttributes().colBg;
1138
1139         return colBg;
1140     }
1141     else
1142         return m_backgroundColour;
1143 }
1144
1145 wxColour wxWindowBase::GetForegroundColour() const
1146 {
1147     // logic is the same as above
1148     if ( !m_hasFgCol && !m_foregroundColour.Ok() )
1149     {
1150         wxColour colFg = GetDefaultAttributes().colFg;
1151
1152         if ( !colFg.IsOk() )
1153             colFg = GetClassDefaultAttributes().colFg;
1154
1155         return colFg;
1156     }
1157     else
1158         return m_foregroundColour;
1159 }
1160
1161 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
1162 {
1163     if ( colour == m_backgroundColour )
1164         return false;
1165
1166     m_hasBgCol = colour.IsOk();
1167     if ( m_backgroundStyle != wxBG_STYLE_CUSTOM )
1168         m_backgroundStyle = m_hasBgCol ? wxBG_STYLE_COLOUR : wxBG_STYLE_SYSTEM;
1169
1170     m_inheritBgCol = m_hasBgCol;
1171     m_backgroundColour = colour;
1172     SetThemeEnabled( !m_hasBgCol && !m_foregroundColour.Ok() );
1173     return true;
1174 }
1175
1176 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
1177 {
1178     if (colour == m_foregroundColour )
1179         return false;
1180
1181     m_hasFgCol = colour.IsOk();
1182     m_inheritFgCol = m_hasFgCol;
1183     m_foregroundColour = colour;
1184     SetThemeEnabled( !m_hasFgCol && !m_backgroundColour.Ok() );
1185     return true;
1186 }
1187
1188 bool wxWindowBase::SetCursor(const wxCursor& cursor)
1189 {
1190     // setting an invalid cursor is ok, it means that we don't have any special
1191     // cursor
1192     if ( m_cursor.IsSameAs(cursor) )
1193     {
1194         // no change
1195         return false;
1196     }
1197
1198     m_cursor = cursor;
1199
1200     return true;
1201 }
1202
1203 wxFont wxWindowBase::GetFont() const
1204 {
1205     // logic is the same as in GetBackgroundColour()
1206     if ( !m_font.IsOk() )
1207     {
1208         wxASSERT_MSG( !m_hasFont, _T("we have invalid explicit font?") );
1209
1210         wxFont font = GetDefaultAttributes().font;
1211         if ( !font.IsOk() )
1212             font = GetClassDefaultAttributes().font;
1213
1214         return font;
1215     }
1216     else
1217         return m_font;
1218 }
1219
1220 bool wxWindowBase::SetFont(const wxFont& font)
1221 {
1222     if ( font == m_font )
1223     {
1224         // no change
1225         return false;
1226     }
1227
1228     m_font = font;
1229     m_hasFont = font.IsOk();
1230     m_inheritFont = m_hasFont;
1231
1232     InvalidateBestSize();
1233
1234     return true;
1235 }
1236
1237 #if wxUSE_PALETTE
1238
1239 void wxWindowBase::SetPalette(const wxPalette& pal)
1240 {
1241     m_hasCustomPalette = true;
1242     m_palette = pal;
1243
1244     // VZ: can anyone explain me what do we do here?
1245     wxWindowDC d((wxWindow *) this);
1246     d.SetPalette(pal);
1247 }
1248
1249 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
1250 {
1251     wxWindow *win = (wxWindow *)this;
1252     while ( win && !win->HasCustomPalette() )
1253     {
1254         win = win->GetParent();
1255     }
1256
1257     return win;
1258 }
1259
1260 #endif // wxUSE_PALETTE
1261
1262 #if wxUSE_CARET
1263 void wxWindowBase::SetCaret(wxCaret *caret)
1264 {
1265     if ( m_caret )
1266     {
1267         delete m_caret;
1268     }
1269
1270     m_caret = caret;
1271
1272     if ( m_caret )
1273     {
1274         wxASSERT_MSG( m_caret->GetWindow() == this,
1275                       wxT("caret should be created associated to this window") );
1276     }
1277 }
1278 #endif // wxUSE_CARET
1279
1280 #if wxUSE_VALIDATORS
1281 // ----------------------------------------------------------------------------
1282 // validators
1283 // ----------------------------------------------------------------------------
1284
1285 void wxWindowBase::SetValidator(const wxValidator& validator)
1286 {
1287     if ( m_windowValidator )
1288         delete m_windowValidator;
1289
1290     m_windowValidator = (wxValidator *)validator.Clone();
1291
1292     if ( m_windowValidator )
1293         m_windowValidator->SetWindow(this);
1294 }
1295 #endif // wxUSE_VALIDATORS
1296
1297 // ----------------------------------------------------------------------------
1298 // update region stuff
1299 // ----------------------------------------------------------------------------
1300
1301 wxRect wxWindowBase::GetUpdateClientRect() const
1302 {
1303     wxRegion rgnUpdate = GetUpdateRegion();
1304     rgnUpdate.Intersect(GetClientRect());
1305     wxRect rectUpdate = rgnUpdate.GetBox();
1306     wxPoint ptOrigin = GetClientAreaOrigin();
1307     rectUpdate.x -= ptOrigin.x;
1308     rectUpdate.y -= ptOrigin.y;
1309
1310     return rectUpdate;
1311 }
1312
1313 bool wxWindowBase::DoIsExposed(int x, int y) const
1314 {
1315     return m_updateRegion.Contains(x, y) != wxOutRegion;
1316 }
1317
1318 bool wxWindowBase::DoIsExposed(int x, int y, int w, int h) const
1319 {
1320     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
1321 }
1322
1323 void wxWindowBase::ClearBackground()
1324 {
1325     // wxGTK uses its own version, no need to add never used code
1326 #ifndef __WXGTK__
1327     wxClientDC dc((wxWindow *)this);
1328     wxBrush brush(GetBackgroundColour(), wxSOLID);
1329     dc.SetBackground(brush);
1330     dc.Clear();
1331 #endif // __WXGTK__
1332 }
1333
1334 // ----------------------------------------------------------------------------
1335 // find child window by id or name
1336 // ----------------------------------------------------------------------------
1337
1338 wxWindow *wxWindowBase::FindWindow(long id) const
1339 {
1340     if ( id == m_windowId )
1341         return (wxWindow *)this;
1342
1343     wxWindowBase *res = (wxWindow *)NULL;
1344     wxWindowList::compatibility_iterator node;
1345     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1346     {
1347         wxWindowBase *child = node->GetData();
1348         res = child->FindWindow( id );
1349     }
1350
1351     return (wxWindow *)res;
1352 }
1353
1354 wxWindow *wxWindowBase::FindWindow(const wxString& name) const
1355 {
1356     if ( name == m_windowName )
1357         return (wxWindow *)this;
1358
1359     wxWindowBase *res = (wxWindow *)NULL;
1360     wxWindowList::compatibility_iterator node;
1361     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1362     {
1363         wxWindow *child = node->GetData();
1364         res = child->FindWindow(name);
1365     }
1366
1367     return (wxWindow *)res;
1368 }
1369
1370
1371 // find any window by id or name or label: If parent is non-NULL, look through
1372 // children for a label or title matching the specified string. If NULL, look
1373 // through all top-level windows.
1374 //
1375 // to avoid duplicating code we reuse the same helper function but with
1376 // different comparators
1377
1378 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1379                                 const wxString& label, long id);
1380
1381 static
1382 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1383                            long WXUNUSED(id))
1384 {
1385     return win->GetLabel() == label;
1386 }
1387
1388 static
1389 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1390                           long WXUNUSED(id))
1391 {
1392     return win->GetName() == label;
1393 }
1394
1395 static
1396 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1397                         long id)
1398 {
1399     return win->GetId() == id;
1400 }
1401
1402 // recursive helper for the FindWindowByXXX() functions
1403 static
1404 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1405                                   const wxString& label,
1406                                   long id,
1407                                   wxFindWindowCmp cmp)
1408 {
1409     if ( parent )
1410     {
1411         // see if this is the one we're looking for
1412         if ( (*cmp)(parent, label, id) )
1413             return (wxWindow *)parent;
1414
1415         // It wasn't, so check all its children
1416         for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
1417               node;
1418               node = node->GetNext() )
1419         {
1420             // recursively check each child
1421             wxWindow *win = (wxWindow *)node->GetData();
1422             wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1423             if (retwin)
1424                 return retwin;
1425         }
1426     }
1427
1428     // Not found
1429     return NULL;
1430 }
1431
1432 // helper for FindWindowByXXX()
1433 static
1434 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1435                              const wxString& label,
1436                              long id,
1437                              wxFindWindowCmp cmp)
1438 {
1439     if ( parent )
1440     {
1441         // just check parent and all its children
1442         return wxFindWindowRecursively(parent, label, id, cmp);
1443     }
1444
1445     // start at very top of wx's windows
1446     for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1447           node;
1448           node = node->GetNext() )
1449     {
1450         // recursively check each window & its children
1451         wxWindow *win = node->GetData();
1452         wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1453         if (retwin)
1454             return retwin;
1455     }
1456
1457     return NULL;
1458 }
1459
1460 /* static */
1461 wxWindow *
1462 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1463 {
1464     return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1465 }
1466
1467 /* static */
1468 wxWindow *
1469 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1470 {
1471     wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1472
1473     if ( !win )
1474     {
1475         // fall back to the label
1476         win = FindWindowByLabel(title, parent);
1477     }
1478
1479     return win;
1480 }
1481
1482 /* static */
1483 wxWindow *
1484 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1485 {
1486     return wxFindWindowHelper(parent, wxEmptyString, id, wxFindWindowCmpIds);
1487 }
1488
1489 // ----------------------------------------------------------------------------
1490 // dialog oriented functions
1491 // ----------------------------------------------------------------------------
1492
1493 void wxWindowBase::MakeModal(bool modal)
1494 {
1495     // Disable all other windows
1496     if ( IsTopLevel() )
1497     {
1498         wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1499         while (node)
1500         {
1501             wxWindow *win = node->GetData();
1502             if (win != this)
1503                 win->Enable(!modal);
1504
1505             node = node->GetNext();
1506         }
1507     }
1508 }
1509
1510 bool wxWindowBase::Validate()
1511 {
1512 #if wxUSE_VALIDATORS
1513     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1514
1515     wxWindowList::compatibility_iterator node;
1516     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1517     {
1518         wxWindowBase *child = node->GetData();
1519         wxValidator *validator = child->GetValidator();
1520         if ( validator && !validator->Validate((wxWindow *)this) )
1521         {
1522             return false;
1523         }
1524
1525         if ( recurse && !child->Validate() )
1526         {
1527             return false;
1528         }
1529     }
1530 #endif // wxUSE_VALIDATORS
1531
1532     return true;
1533 }
1534
1535 bool wxWindowBase::TransferDataToWindow()
1536 {
1537 #if wxUSE_VALIDATORS
1538     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1539
1540     wxWindowList::compatibility_iterator node;
1541     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1542     {
1543         wxWindowBase *child = node->GetData();
1544         wxValidator *validator = child->GetValidator();
1545         if ( validator && !validator->TransferToWindow() )
1546         {
1547             wxLogWarning(_("Could not transfer data to window"));
1548 #if wxUSE_LOG
1549             wxLog::FlushActive();
1550 #endif // wxUSE_LOG
1551
1552             return false;
1553         }
1554
1555         if ( recurse )
1556         {
1557             if ( !child->TransferDataToWindow() )
1558             {
1559                 // warning already given
1560                 return false;
1561             }
1562         }
1563     }
1564 #endif // wxUSE_VALIDATORS
1565
1566     return true;
1567 }
1568
1569 bool wxWindowBase::TransferDataFromWindow()
1570 {
1571 #if wxUSE_VALIDATORS
1572     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1573
1574     wxWindowList::compatibility_iterator node;
1575     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1576     {
1577         wxWindow *child = node->GetData();
1578         wxValidator *validator = child->GetValidator();
1579         if ( validator && !validator->TransferFromWindow() )
1580         {
1581             // nop warning here because the application is supposed to give
1582             // one itself - we don't know here what might have gone wrongly
1583
1584             return false;
1585         }
1586
1587         if ( recurse )
1588         {
1589             if ( !child->TransferDataFromWindow() )
1590             {
1591                 // warning already given
1592                 return false;
1593             }
1594         }
1595     }
1596 #endif // wxUSE_VALIDATORS
1597
1598     return true;
1599 }
1600
1601 void wxWindowBase::InitDialog()
1602 {
1603     wxInitDialogEvent event(GetId());
1604     event.SetEventObject( this );
1605     GetEventHandler()->ProcessEvent(event);
1606 }
1607
1608 // ----------------------------------------------------------------------------
1609 // context-sensitive help support
1610 // ----------------------------------------------------------------------------
1611
1612 #if wxUSE_HELP
1613
1614 // associate this help text with this window
1615 void wxWindowBase::SetHelpText(const wxString& text)
1616 {
1617     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1618     if ( helpProvider )
1619     {
1620         helpProvider->AddHelp(this, text);
1621     }
1622 }
1623
1624 // associate this help text with all windows with the same id as this
1625 // one
1626 void wxWindowBase::SetHelpTextForId(const wxString& text)
1627 {
1628     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1629     if ( helpProvider )
1630     {
1631         helpProvider->AddHelp(GetId(), text);
1632     }
1633 }
1634
1635 // get the help string associated with this window (may be empty)
1636 // default implementation forwards calls to the help provider
1637 wxString
1638 wxWindowBase::GetHelpTextAtPoint(const wxPoint & WXUNUSED(pt),
1639                                  wxHelpEvent::Origin WXUNUSED(origin)) const
1640 {
1641     wxString text;
1642     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1643     if ( helpProvider )
1644     {
1645         text = helpProvider->GetHelp(this);
1646     }
1647
1648     return text;
1649 }
1650
1651 // show help for this window
1652 void wxWindowBase::OnHelp(wxHelpEvent& event)
1653 {
1654     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1655     if ( helpProvider )
1656     {
1657         if ( helpProvider->ShowHelpAtPoint(this, event.GetPosition(), event.GetOrigin()) )
1658         {
1659             // skip the event.Skip() below
1660             return;
1661         }
1662     }
1663
1664     event.Skip();
1665 }
1666
1667 #endif // wxUSE_HELP
1668
1669 // ----------------------------------------------------------------------------
1670 // tooltips
1671 // ----------------------------------------------------------------------------
1672
1673 #if wxUSE_TOOLTIPS
1674
1675 void wxWindowBase::SetToolTip( const wxString &tip )
1676 {
1677     // don't create the new tooltip if we already have one
1678     if ( m_tooltip )
1679     {
1680         m_tooltip->SetTip( tip );
1681     }
1682     else
1683     {
1684         SetToolTip( new wxToolTip( tip ) );
1685     }
1686
1687     // setting empty tooltip text does not remove the tooltip any more - use
1688     // SetToolTip((wxToolTip *)NULL) for this
1689 }
1690
1691 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1692 {
1693     if ( m_tooltip != tooltip )
1694     {
1695         if ( m_tooltip )
1696             delete m_tooltip;
1697
1698         m_tooltip = tooltip;
1699     }
1700 }
1701
1702 #endif // wxUSE_TOOLTIPS
1703
1704 // ----------------------------------------------------------------------------
1705 // constraints and sizers
1706 // ----------------------------------------------------------------------------
1707
1708 #if wxUSE_CONSTRAINTS
1709
1710 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1711 {
1712     if ( m_constraints )
1713     {
1714         UnsetConstraints(m_constraints);
1715         delete m_constraints;
1716     }
1717     m_constraints = constraints;
1718     if ( m_constraints )
1719     {
1720         // Make sure other windows know they're part of a 'meaningful relationship'
1721         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1722             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1723         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1724             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1725         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1726             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1727         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1728             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1729         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1730             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1731         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1732             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1733         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1734             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1735         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1736             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1737     }
1738 }
1739
1740 // This removes any dangling pointers to this window in other windows'
1741 // constraintsInvolvedIn lists.
1742 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1743 {
1744     if ( c )
1745     {
1746         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1747             c->left.GetOtherWindow()->RemoveConstraintReference(this);
1748         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1749             c->top.GetOtherWindow()->RemoveConstraintReference(this);
1750         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1751             c->right.GetOtherWindow()->RemoveConstraintReference(this);
1752         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1753             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1754         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1755             c->width.GetOtherWindow()->RemoveConstraintReference(this);
1756         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1757             c->height.GetOtherWindow()->RemoveConstraintReference(this);
1758         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1759             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
1760         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
1761             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
1762     }
1763 }
1764
1765 // Back-pointer to other windows we're involved with, so if we delete this
1766 // window, we must delete any constraints we're involved with.
1767 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
1768 {
1769     if ( !m_constraintsInvolvedIn )
1770         m_constraintsInvolvedIn = new wxWindowList;
1771     if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
1772         m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
1773 }
1774
1775 // REMOVE back-pointer to other windows we're involved with.
1776 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
1777 {
1778     if ( m_constraintsInvolvedIn )
1779         m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
1780 }
1781
1782 // Reset any constraints that mention this window
1783 void wxWindowBase::DeleteRelatedConstraints()
1784 {
1785     if ( m_constraintsInvolvedIn )
1786     {
1787         wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
1788         while (node)
1789         {
1790             wxWindow *win = node->GetData();
1791             wxLayoutConstraints *constr = win->GetConstraints();
1792
1793             // Reset any constraints involving this window
1794             if ( constr )
1795             {
1796                 constr->left.ResetIfWin(this);
1797                 constr->top.ResetIfWin(this);
1798                 constr->right.ResetIfWin(this);
1799                 constr->bottom.ResetIfWin(this);
1800                 constr->width.ResetIfWin(this);
1801                 constr->height.ResetIfWin(this);
1802                 constr->centreX.ResetIfWin(this);
1803                 constr->centreY.ResetIfWin(this);
1804             }
1805
1806             wxWindowList::compatibility_iterator next = node->GetNext();
1807             m_constraintsInvolvedIn->Erase(node);
1808             node = next;
1809         }
1810
1811         delete m_constraintsInvolvedIn;
1812         m_constraintsInvolvedIn = (wxWindowList *) NULL;
1813     }
1814 }
1815
1816 #endif // wxUSE_CONSTRAINTS
1817
1818 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
1819 {
1820     if ( sizer == m_windowSizer)
1821         return;
1822
1823     if ( m_windowSizer )
1824     {
1825         m_windowSizer->SetContainingWindow(NULL);
1826
1827         if ( deleteOld )
1828             delete m_windowSizer;
1829     }
1830
1831     m_windowSizer = sizer;
1832     if ( m_windowSizer )
1833     {
1834         m_windowSizer->SetContainingWindow((wxWindow *)this);
1835     }
1836
1837     SetAutoLayout(m_windowSizer != NULL);
1838 }
1839
1840 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
1841 {
1842     SetSizer( sizer, deleteOld );
1843     sizer->SetSizeHints( (wxWindow*) this );
1844 }
1845
1846
1847 void wxWindowBase::SetContainingSizer(wxSizer* sizer)
1848 {
1849     // adding a window to a sizer twice is going to result in fatal and
1850     // hard to debug problems later because when deleting the second
1851     // associated wxSizerItem we're going to dereference a dangling
1852     // pointer; so try to detect this as early as possible
1853     wxASSERT_MSG( !sizer || m_containingSizer != sizer,
1854                   _T("Adding a window to the same sizer twice?") );
1855
1856     m_containingSizer = sizer;
1857 }
1858
1859 #if wxUSE_CONSTRAINTS
1860
1861 void wxWindowBase::SatisfyConstraints()
1862 {
1863     wxLayoutConstraints *constr = GetConstraints();
1864     bool wasOk = constr && constr->AreSatisfied();
1865
1866     ResetConstraints();   // Mark all constraints as unevaluated
1867
1868     int noChanges = 1;
1869
1870     // if we're a top level panel (i.e. our parent is frame/dialog), our
1871     // own constraints will never be satisfied any more unless we do it
1872     // here
1873     if ( wasOk )
1874     {
1875         while ( noChanges > 0 )
1876         {
1877             LayoutPhase1(&noChanges);
1878         }
1879     }
1880
1881     LayoutPhase2(&noChanges);
1882 }
1883
1884 #endif // wxUSE_CONSTRAINTS
1885
1886 bool wxWindowBase::Layout()
1887 {
1888     // If there is a sizer, use it instead of the constraints
1889     if ( GetSizer() )
1890     {
1891         int w = 0, h = 0;
1892         GetVirtualSize(&w, &h);
1893         GetSizer()->SetDimension( 0, 0, w, h );
1894     }
1895 #if wxUSE_CONSTRAINTS
1896     else
1897     {
1898         SatisfyConstraints(); // Find the right constraints values
1899         SetConstraintSizes(); // Recursively set the real window sizes
1900     }
1901 #endif
1902
1903     return true;
1904 }
1905
1906 #if wxUSE_CONSTRAINTS
1907
1908 // first phase of the constraints evaluation: set our own constraints
1909 bool wxWindowBase::LayoutPhase1(int *noChanges)
1910 {
1911     wxLayoutConstraints *constr = GetConstraints();
1912
1913     return !constr || constr->SatisfyConstraints(this, noChanges);
1914 }
1915
1916 // second phase: set the constraints for our children
1917 bool wxWindowBase::LayoutPhase2(int *noChanges)
1918 {
1919     *noChanges = 0;
1920
1921     // Layout children
1922     DoPhase(1);
1923
1924     // Layout grand children
1925     DoPhase(2);
1926
1927     return true;
1928 }
1929
1930 // Do a phase of evaluating child constraints
1931 bool wxWindowBase::DoPhase(int phase)
1932 {
1933     // the list containing the children for which the constraints are already
1934     // set correctly
1935     wxWindowList succeeded;
1936
1937     // the max number of iterations we loop before concluding that we can't set
1938     // the constraints
1939     static const int maxIterations = 500;
1940
1941     for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
1942     {
1943         int noChanges = 0;
1944
1945         // loop over all children setting their constraints
1946         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1947               node;
1948               node = node->GetNext() )
1949         {
1950             wxWindow *child = node->GetData();
1951             if ( child->IsTopLevel() )
1952             {
1953                 // top level children are not inside our client area
1954                 continue;
1955             }
1956
1957             if ( !child->GetConstraints() || succeeded.Find(child) )
1958             {
1959                 // this one is either already ok or nothing we can do about it
1960                 continue;
1961             }
1962
1963             int tempNoChanges = 0;
1964             bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
1965                                       : child->LayoutPhase2(&tempNoChanges);
1966             noChanges += tempNoChanges;
1967
1968             if ( success )
1969             {
1970                 succeeded.Append(child);
1971             }
1972         }
1973
1974         if ( !noChanges )
1975         {
1976             // constraints are set
1977             break;
1978         }
1979     }
1980
1981     return true;
1982 }
1983
1984 void wxWindowBase::ResetConstraints()
1985 {
1986     wxLayoutConstraints *constr = GetConstraints();
1987     if ( constr )
1988     {
1989         constr->left.SetDone(false);
1990         constr->top.SetDone(false);
1991         constr->right.SetDone(false);
1992         constr->bottom.SetDone(false);
1993         constr->width.SetDone(false);
1994         constr->height.SetDone(false);
1995         constr->centreX.SetDone(false);
1996         constr->centreY.SetDone(false);
1997     }
1998
1999     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2000     while (node)
2001     {
2002         wxWindow *win = node->GetData();
2003         if ( !win->IsTopLevel() )
2004             win->ResetConstraints();
2005         node = node->GetNext();
2006     }
2007 }
2008
2009 // Need to distinguish between setting the 'fake' size for windows and sizers,
2010 // and setting the real values.
2011 void wxWindowBase::SetConstraintSizes(bool recurse)
2012 {
2013     wxLayoutConstraints *constr = GetConstraints();
2014     if ( constr && constr->AreSatisfied() )
2015     {
2016         int x = constr->left.GetValue();
2017         int y = constr->top.GetValue();
2018         int w = constr->width.GetValue();
2019         int h = constr->height.GetValue();
2020
2021         if ( (constr->width.GetRelationship() != wxAsIs ) ||
2022              (constr->height.GetRelationship() != wxAsIs) )
2023         {
2024             SetSize(x, y, w, h);
2025         }
2026         else
2027         {
2028             // If we don't want to resize this window, just move it...
2029             Move(x, y);
2030         }
2031     }
2032     else if ( constr )
2033     {
2034         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
2035                    GetClassInfo()->GetClassName(),
2036                    GetName().c_str());
2037     }
2038
2039     if ( recurse )
2040     {
2041         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2042         while (node)
2043         {
2044             wxWindow *win = node->GetData();
2045             if ( !win->IsTopLevel() && win->GetConstraints() )
2046                 win->SetConstraintSizes();
2047             node = node->GetNext();
2048         }
2049     }
2050 }
2051
2052 // Only set the size/position of the constraint (if any)
2053 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
2054 {
2055     wxLayoutConstraints *constr = GetConstraints();
2056     if ( constr )
2057     {
2058         if ( x != wxDefaultCoord )
2059         {
2060             constr->left.SetValue(x);
2061             constr->left.SetDone(true);
2062         }
2063         if ( y != wxDefaultCoord )
2064         {
2065             constr->top.SetValue(y);
2066             constr->top.SetDone(true);
2067         }
2068         if ( w != wxDefaultCoord )
2069         {
2070             constr->width.SetValue(w);
2071             constr->width.SetDone(true);
2072         }
2073         if ( h != wxDefaultCoord )
2074         {
2075             constr->height.SetValue(h);
2076             constr->height.SetDone(true);
2077         }
2078     }
2079 }
2080
2081 void wxWindowBase::MoveConstraint(int x, int y)
2082 {
2083     wxLayoutConstraints *constr = GetConstraints();
2084     if ( constr )
2085     {
2086         if ( x != wxDefaultCoord )
2087         {
2088             constr->left.SetValue(x);
2089             constr->left.SetDone(true);
2090         }
2091         if ( y != wxDefaultCoord )
2092         {
2093             constr->top.SetValue(y);
2094             constr->top.SetDone(true);
2095         }
2096     }
2097 }
2098
2099 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
2100 {
2101     wxLayoutConstraints *constr = GetConstraints();
2102     if ( constr )
2103     {
2104         *w = constr->width.GetValue();
2105         *h = constr->height.GetValue();
2106     }
2107     else
2108         GetSize(w, h);
2109 }
2110
2111 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
2112 {
2113     wxLayoutConstraints *constr = GetConstraints();
2114     if ( constr )
2115     {
2116         *w = constr->width.GetValue();
2117         *h = constr->height.GetValue();
2118     }
2119     else
2120         GetClientSize(w, h);
2121 }
2122
2123 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
2124 {
2125     wxLayoutConstraints *constr = GetConstraints();
2126     if ( constr )
2127     {
2128         *x = constr->left.GetValue();
2129         *y = constr->top.GetValue();
2130     }
2131     else
2132         GetPosition(x, y);
2133 }
2134
2135 #endif // wxUSE_CONSTRAINTS
2136
2137 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
2138 {
2139     // don't do it for the dialogs/frames - they float independently of their
2140     // parent
2141     if ( !IsTopLevel() )
2142     {
2143         wxWindow *parent = GetParent();
2144         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
2145         {
2146             wxPoint pt(parent->GetClientAreaOrigin());
2147             x += pt.x;
2148             y += pt.y;
2149         }
2150     }
2151 }
2152
2153 // ----------------------------------------------------------------------------
2154 // Update UI processing
2155 // ----------------------------------------------------------------------------
2156
2157 void wxWindowBase::UpdateWindowUI(long flags)
2158 {
2159     wxUpdateUIEvent event(GetId());
2160     event.SetEventObject(this);
2161
2162     if ( GetEventHandler()->ProcessEvent(event) )
2163     {
2164         DoUpdateWindowUI(event);
2165     }
2166
2167     if (flags & wxUPDATE_UI_RECURSE)
2168     {
2169         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2170         while (node)
2171         {
2172             wxWindow* child = (wxWindow*) node->GetData();
2173             child->UpdateWindowUI(flags);
2174             node = node->GetNext();
2175         }
2176     }
2177 }
2178
2179 // do the window-specific processing after processing the update event
2180 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
2181 {
2182     if ( event.GetSetEnabled() )
2183         Enable(event.GetEnabled());
2184
2185     if ( event.GetSetShown() )
2186         Show(event.GetShown());
2187 }
2188
2189 // ----------------------------------------------------------------------------
2190 // dialog units translations
2191 // ----------------------------------------------------------------------------
2192
2193 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
2194 {
2195     int charWidth = GetCharWidth();
2196     int charHeight = GetCharHeight();
2197     wxPoint pt2 = wxDefaultPosition;
2198     if (pt.x != wxDefaultCoord)
2199         pt2.x = (int) ((pt.x * 4) / charWidth);
2200     if (pt.y != wxDefaultCoord)
2201         pt2.y = (int) ((pt.y * 8) / charHeight);
2202
2203     return pt2;
2204 }
2205
2206 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
2207 {
2208     int charWidth = GetCharWidth();
2209     int charHeight = GetCharHeight();
2210     wxPoint pt2 = wxDefaultPosition;
2211     if (pt.x != wxDefaultCoord)
2212         pt2.x = (int) ((pt.x * charWidth) / 4);
2213     if (pt.y != wxDefaultCoord)
2214         pt2.y = (int) ((pt.y * charHeight) / 8);
2215
2216     return pt2;
2217 }
2218
2219 // ----------------------------------------------------------------------------
2220 // event handlers
2221 // ----------------------------------------------------------------------------
2222
2223 // propagate the colour change event to the subwindows
2224 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
2225 {
2226     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2227     while ( node )
2228     {
2229         // Only propagate to non-top-level windows
2230         wxWindow *win = node->GetData();
2231         if ( !win->IsTopLevel() )
2232         {
2233             wxSysColourChangedEvent event2;
2234             event.SetEventObject(win);
2235             win->GetEventHandler()->ProcessEvent(event2);
2236         }
2237
2238         node = node->GetNext();
2239     }
2240
2241     Refresh();
2242 }
2243
2244 // the default action is to populate dialog with data when it's created,
2245 // and nudge the UI into displaying itself correctly in case
2246 // we've turned the wxUpdateUIEvents frequency down low.
2247 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
2248 {
2249     TransferDataToWindow();
2250
2251     // Update the UI at this point
2252     UpdateWindowUI(wxUPDATE_UI_RECURSE);
2253 }
2254
2255 // ----------------------------------------------------------------------------
2256 // menu-related functions
2257 // ----------------------------------------------------------------------------
2258
2259 #if wxUSE_MENUS
2260
2261 bool wxWindowBase::PopupMenu(wxMenu *menu, int x, int y)
2262 {
2263     wxCHECK_MSG( menu, false, "can't popup NULL menu" );
2264
2265     wxCurrentPopupMenu = menu;
2266     const bool rc = DoPopupMenu(menu, x, y);
2267     wxCurrentPopupMenu = NULL;
2268
2269     return rc;
2270 }
2271
2272 // this is used to pass the id of the selected item from the menu event handler
2273 // to the main function itself
2274 //
2275 // it's ok to use a global here as there can be at most one popup menu shown at
2276 // any time
2277 static int gs_popupMenuSelection = wxID_NONE;
2278
2279 void wxWindowBase::InternalOnPopupMenu(wxCommandEvent& event)
2280 {
2281     // store the id in a global variable where we'll retrieve it from later
2282     gs_popupMenuSelection = event.GetId();
2283 }
2284
2285 int
2286 wxWindowBase::DoGetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y)
2287 {
2288     gs_popupMenuSelection = wxID_NONE;
2289
2290     Connect(wxEVT_COMMAND_MENU_SELECTED,
2291             wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2292             NULL,
2293             this);
2294
2295     PopupMenu(&menu, x, y);
2296
2297     Disconnect(wxEVT_COMMAND_MENU_SELECTED,
2298                wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2299                NULL,
2300                this);
2301
2302     return gs_popupMenuSelection;
2303 }
2304
2305 #endif // wxUSE_MENUS
2306
2307 // methods for drawing the sizers in a visible way
2308 #ifdef __WXDEBUG__
2309
2310 static void DrawSizers(wxWindowBase *win);
2311
2312 static void DrawBorder(wxWindowBase *win, const wxRect& rect, bool fill = false)
2313 {
2314     wxClientDC dc((wxWindow *)win);
2315     dc.SetPen(*wxRED_PEN);
2316     dc.SetBrush(fill ? wxBrush(*wxRED, wxCROSSDIAG_HATCH): *wxTRANSPARENT_BRUSH);
2317     dc.DrawRectangle(rect.Deflate(1, 1));
2318 }
2319
2320 static void DrawSizer(wxWindowBase *win, wxSizer *sizer)
2321 {
2322     const wxSizerItemList& items = sizer->GetChildren();
2323     for ( wxSizerItemList::const_iterator i = items.begin(),
2324                                         end = items.end();
2325           i != end;
2326           ++i )
2327     {
2328         wxSizerItem *item = *i;
2329         if ( item->IsSizer() )
2330         {
2331             DrawBorder(win, item->GetRect().Deflate(2));
2332             DrawSizer(win, item->GetSizer());
2333         }
2334         else if ( item->IsSpacer() )
2335         {
2336             DrawBorder(win, item->GetRect().Deflate(2), true);
2337         }
2338         else if ( item->IsWindow() )
2339         {
2340             DrawSizers(item->GetWindow());
2341         }
2342     }
2343 }
2344
2345 static void DrawSizers(wxWindowBase *win)
2346 {
2347     wxSizer *sizer = win->GetSizer();
2348     if ( sizer )
2349     {
2350         DrawBorder(win, win->GetClientSize());
2351         DrawSizer(win, sizer);
2352     }
2353     else // no sizer, still recurse into the children
2354     {
2355         const wxWindowList& children = win->GetChildren();
2356         for ( wxWindowList::const_iterator i = children.begin(),
2357                                          end = children.end();
2358               i != end;
2359               ++i )
2360         {
2361             DrawSizers(*i);
2362         }
2363     }
2364 }
2365
2366 #endif // __WXDEBUG__
2367
2368 // process special middle clicks
2369 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
2370 {
2371     if ( event.ControlDown() && event.AltDown() )
2372     {
2373 #ifdef __WXDEBUG__
2374         // Ctrl-Alt-Shift-mclick makes the sizers visible in debug builds
2375         if ( event.ShiftDown() )
2376         {
2377             DrawSizers(this);
2378             return;
2379         }
2380 #endif // __WXDEBUG__
2381         ::wxInfoMessageBox((wxWindow*)this);
2382     }
2383     else
2384     {
2385         event.Skip();
2386     }
2387 }
2388
2389 // ----------------------------------------------------------------------------
2390 // accessibility
2391 // ----------------------------------------------------------------------------
2392
2393 #if wxUSE_ACCESSIBILITY
2394 void wxWindowBase::SetAccessible(wxAccessible* accessible)
2395 {
2396     if (m_accessible && (accessible != m_accessible))
2397         delete m_accessible;
2398     m_accessible = accessible;
2399     if (m_accessible)
2400         m_accessible->SetWindow((wxWindow*) this);
2401 }
2402
2403 // Returns the accessible object, creating if necessary.
2404 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2405 {
2406     if (!m_accessible)
2407         m_accessible = CreateAccessible();
2408     return m_accessible;
2409 }
2410
2411 // Override to create a specific accessible object.
2412 wxAccessible* wxWindowBase::CreateAccessible()
2413 {
2414     return new wxWindowAccessible((wxWindow*) this);
2415 }
2416
2417 #endif
2418
2419 // ----------------------------------------------------------------------------
2420 // list classes implementation
2421 // ----------------------------------------------------------------------------
2422
2423 #if wxUSE_STL
2424
2425 #include "wx/listimpl.cpp"
2426 WX_DEFINE_LIST(wxWindowList)
2427
2428 #else // !wxUSE_STL
2429
2430 void wxWindowListNode::DeleteData()
2431 {
2432     delete (wxWindow *)GetData();
2433 }
2434
2435 #endif // wxUSE_STL/!wxUSE_STL
2436
2437 // ----------------------------------------------------------------------------
2438 // borders
2439 // ----------------------------------------------------------------------------
2440
2441 wxBorder wxWindowBase::GetBorder(long flags) const
2442 {
2443     wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2444     if ( border == wxBORDER_DEFAULT )
2445     {
2446         border = GetDefaultBorder();
2447     }
2448     else if ( border == wxBORDER_THEME )
2449     {
2450         border = GetDefaultBorderForControl();
2451     }
2452
2453     return border;
2454 }
2455
2456 wxBorder wxWindowBase::GetDefaultBorder() const
2457 {
2458     return wxBORDER_NONE;
2459 }
2460
2461 // ----------------------------------------------------------------------------
2462 // hit testing
2463 // ----------------------------------------------------------------------------
2464
2465 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2466 {
2467     // here we just check if the point is inside the window or not
2468
2469     // check the top and left border first
2470     bool outside = x < 0 || y < 0;
2471     if ( !outside )
2472     {
2473         // check the right and bottom borders too
2474         wxSize size = GetSize();
2475         outside = x >= size.x || y >= size.y;
2476     }
2477
2478     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2479 }
2480
2481 // ----------------------------------------------------------------------------
2482 // mouse capture
2483 // ----------------------------------------------------------------------------
2484
2485 struct WXDLLEXPORT wxWindowNext
2486 {
2487     wxWindow *win;
2488     wxWindowNext *next;
2489 } *wxWindowBase::ms_winCaptureNext = NULL;
2490 wxWindow *wxWindowBase::ms_winCaptureCurrent = NULL;
2491 bool wxWindowBase::ms_winCaptureChanging = false;
2492
2493 void wxWindowBase::CaptureMouse()
2494 {
2495     wxLogTrace(_T("mousecapture"), _T("CaptureMouse(%p)"), wx_static_cast(void*, this));
2496
2497     wxASSERT_MSG( !ms_winCaptureChanging, _T("recursive CaptureMouse call?") );
2498
2499     ms_winCaptureChanging = true;
2500
2501     wxWindow *winOld = GetCapture();
2502     if ( winOld )
2503     {
2504         ((wxWindowBase*) winOld)->DoReleaseMouse();
2505
2506         // save it on stack
2507         wxWindowNext *item = new wxWindowNext;
2508         item->win = winOld;
2509         item->next = ms_winCaptureNext;
2510         ms_winCaptureNext = item;
2511     }
2512     //else: no mouse capture to save
2513
2514     DoCaptureMouse();
2515     ms_winCaptureCurrent = (wxWindow*)this;
2516
2517     ms_winCaptureChanging = false;
2518 }
2519
2520 void wxWindowBase::ReleaseMouse()
2521 {
2522     wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(%p)"), wx_static_cast(void*, this));
2523
2524     wxASSERT_MSG( !ms_winCaptureChanging, _T("recursive ReleaseMouse call?") );
2525
2526     wxASSERT_MSG( GetCapture() == this, wxT("attempt to release mouse, but this window hasn't captured it") );
2527
2528     ms_winCaptureChanging = true;
2529
2530     DoReleaseMouse();
2531     ms_winCaptureCurrent = NULL;
2532
2533     if ( ms_winCaptureNext )
2534     {
2535         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2536         ms_winCaptureCurrent = ms_winCaptureNext->win;
2537
2538         wxWindowNext *item = ms_winCaptureNext;
2539         ms_winCaptureNext = item->next;
2540         delete item;
2541     }
2542     //else: stack is empty, no previous capture
2543
2544     ms_winCaptureChanging = false;
2545
2546     wxLogTrace(_T("mousecapture"),
2547         (const wxChar *) _T("After ReleaseMouse() mouse is captured by %p"),
2548         wx_static_cast(void*, GetCapture()));
2549 }
2550
2551 static void DoNotifyWindowAboutCaptureLost(wxWindow *win)
2552 {
2553     wxMouseCaptureLostEvent event(win->GetId());
2554     event.SetEventObject(win);
2555     if ( !win->GetEventHandler()->ProcessEvent(event) )
2556     {
2557         // windows must handle this event, otherwise the app wouldn't behave
2558         // correctly if it loses capture unexpectedly; see the discussion here:
2559         // http://sourceforge.net/tracker/index.php?func=detail&aid=1153662&group_id=9863&atid=109863
2560         // http://article.gmane.org/gmane.comp.lib.wxwidgets.devel/82376
2561         wxFAIL_MSG( _T("window that captured the mouse didn't process wxEVT_MOUSE_CAPTURE_LOST") );
2562     }
2563 }
2564
2565 /* static */
2566 void wxWindowBase::NotifyCaptureLost()
2567 {
2568     // don't do anything if capture lost was expected, i.e. resulted from
2569     // a wx call to ReleaseMouse or CaptureMouse:
2570     if ( ms_winCaptureChanging )
2571         return;
2572
2573     // if the capture was lost unexpectedly, notify every window that has
2574     // capture (on stack or current) about it and clear the stack:
2575
2576     if ( ms_winCaptureCurrent )
2577     {
2578         DoNotifyWindowAboutCaptureLost(ms_winCaptureCurrent);
2579         ms_winCaptureCurrent = NULL;
2580     }
2581
2582     while ( ms_winCaptureNext )
2583     {
2584         wxWindowNext *item = ms_winCaptureNext;
2585         ms_winCaptureNext = item->next;
2586
2587         DoNotifyWindowAboutCaptureLost(item->win);
2588
2589         delete item;
2590     }
2591 }
2592
2593 #if wxUSE_HOTKEY
2594
2595 bool
2596 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2597                              int WXUNUSED(modifiers),
2598                              int WXUNUSED(keycode))
2599 {
2600     // not implemented
2601     return false;
2602 }
2603
2604 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2605 {
2606     // not implemented
2607     return false;
2608 }
2609
2610 #endif // wxUSE_HOTKEY
2611
2612 // ----------------------------------------------------------------------------
2613 // event processing
2614 // ----------------------------------------------------------------------------
2615
2616 bool wxWindowBase::TryValidator(wxEvent& wxVALIDATOR_PARAM(event))
2617 {
2618 #if wxUSE_VALIDATORS
2619     // Can only use the validator of the window which
2620     // is receiving the event
2621     if ( event.GetEventObject() == this )
2622     {
2623         wxValidator *validator = GetValidator();
2624         if ( validator && validator->ProcessEvent(event) )
2625         {
2626             return true;
2627         }
2628     }
2629 #endif // wxUSE_VALIDATORS
2630
2631     return false;
2632 }
2633
2634 bool wxWindowBase::TryParent(wxEvent& event)
2635 {
2636     // carry on up the parent-child hierarchy if the propagation count hasn't
2637     // reached zero yet
2638     if ( event.ShouldPropagate() )
2639     {
2640         // honour the requests to stop propagation at this window: this is
2641         // used by the dialogs, for example, to prevent processing the events
2642         // from the dialog controls in the parent frame which rarely, if ever,
2643         // makes sense
2644         if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
2645         {
2646             wxWindow *parent = GetParent();
2647             if ( parent && !parent->IsBeingDeleted() )
2648             {
2649                 wxPropagateOnce propagateOnce(event);
2650
2651                 return parent->GetEventHandler()->ProcessEvent(event);
2652             }
2653         }
2654     }
2655
2656     return wxEvtHandler::TryParent(event);
2657 }
2658
2659 // ----------------------------------------------------------------------------
2660 // window relationships
2661 // ----------------------------------------------------------------------------
2662
2663 wxWindow *wxWindowBase::DoGetSibling(WindowOrder order) const
2664 {
2665     wxCHECK_MSG( GetParent(), NULL,
2666                     _T("GetPrev/NextSibling() don't work for TLWs!") );
2667
2668     wxWindowList& siblings = GetParent()->GetChildren();
2669     wxWindowList::compatibility_iterator i = siblings.Find((wxWindow *)this);
2670     wxCHECK_MSG( i, NULL, _T("window not a child of its parent?") );
2671
2672     if ( order == OrderBefore )
2673         i = i->GetPrevious();
2674     else // OrderAfter
2675         i = i->GetNext();
2676
2677     return i ? i->GetData() : NULL;
2678 }
2679
2680 // ----------------------------------------------------------------------------
2681 // keyboard navigation
2682 // ----------------------------------------------------------------------------
2683
2684 // Navigates in the specified direction inside this window
2685 bool wxWindowBase::DoNavigateIn(int flags)
2686 {
2687 #ifdef wxHAS_NATIVE_TAB_TRAVERSAL
2688     // native code doesn't process our wxNavigationKeyEvents anyhow
2689     wxUnusedVar(flags);
2690     return false;
2691 #else // !wxHAS_NATIVE_TAB_TRAVERSAL
2692     wxNavigationKeyEvent eventNav;
2693     eventNav.SetFlags(flags);
2694     eventNav.SetEventObject(FindFocus());
2695     return GetEventHandler()->ProcessEvent(eventNav);
2696 #endif // wxHAS_NATIVE_TAB_TRAVERSAL/!wxHAS_NATIVE_TAB_TRAVERSAL
2697 }
2698
2699 void wxWindowBase::DoMoveInTabOrder(wxWindow *win, WindowOrder move)
2700 {
2701     // check that we're not a top level window
2702     wxCHECK_RET( GetParent(),
2703                     _T("MoveBefore/AfterInTabOrder() don't work for TLWs!") );
2704
2705     // detect the special case when we have nothing to do anyhow and when the
2706     // code below wouldn't work
2707     if ( win == this )
2708         return;
2709
2710     // find the target window in the siblings list
2711     wxWindowList& siblings = GetParent()->GetChildren();
2712     wxWindowList::compatibility_iterator i = siblings.Find(win);
2713     wxCHECK_RET( i, _T("MoveBefore/AfterInTabOrder(): win is not a sibling") );
2714
2715     // unfortunately, when wxUSE_STL == 1 DetachNode() is not implemented so we
2716     // can't just move the node around
2717     wxWindow *self = (wxWindow *)this;
2718     siblings.DeleteObject(self);
2719     if ( move == OrderAfter )
2720     {
2721         i = i->GetNext();
2722     }
2723
2724     if ( i )
2725     {
2726         siblings.Insert(i, self);
2727     }
2728     else // OrderAfter and win was the last sibling
2729     {
2730         siblings.Append(self);
2731     }
2732 }
2733
2734 // ----------------------------------------------------------------------------
2735 // focus handling
2736 // ----------------------------------------------------------------------------
2737
2738 /*static*/ wxWindow* wxWindowBase::FindFocus()
2739 {
2740     wxWindowBase *win = DoFindFocus();
2741     return win ? win->GetMainWindowOfCompositeControl() : NULL;
2742 }
2743
2744 // ----------------------------------------------------------------------------
2745 // global functions
2746 // ----------------------------------------------------------------------------
2747
2748 wxWindow* wxGetTopLevelParent(wxWindow *win)
2749 {
2750     while ( win && !win->IsTopLevel() )
2751          win = win->GetParent();
2752
2753     return win;
2754 }
2755
2756 #if wxUSE_ACCESSIBILITY
2757 // ----------------------------------------------------------------------------
2758 // accessible object for windows
2759 // ----------------------------------------------------------------------------
2760
2761 // Can return either a child object, or an integer
2762 // representing the child element, starting from 1.
2763 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
2764 {
2765     wxASSERT( GetWindow() != NULL );
2766     if (!GetWindow())
2767         return wxACC_FAIL;
2768
2769     return wxACC_NOT_IMPLEMENTED;
2770 }
2771
2772 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
2773 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
2774 {
2775     wxASSERT( GetWindow() != NULL );
2776     if (!GetWindow())
2777         return wxACC_FAIL;
2778
2779     wxWindow* win = NULL;
2780     if (elementId == 0)
2781     {
2782         win = GetWindow();
2783     }
2784     else
2785     {
2786         if (elementId <= (int) GetWindow()->GetChildren().GetCount())
2787         {
2788             win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
2789         }
2790         else
2791             return wxACC_FAIL;
2792     }
2793     if (win)
2794     {
2795         rect = win->GetRect();
2796         if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
2797             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
2798         return wxACC_OK;
2799     }
2800
2801     return wxACC_NOT_IMPLEMENTED;
2802 }
2803
2804 // Navigates from fromId to toId/toObject.
2805 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
2806                              int* WXUNUSED(toId), wxAccessible** toObject)
2807 {
2808     wxASSERT( GetWindow() != NULL );
2809     if (!GetWindow())
2810         return wxACC_FAIL;
2811
2812     switch (navDir)
2813     {
2814     case wxNAVDIR_FIRSTCHILD:
2815         {
2816             if (GetWindow()->GetChildren().GetCount() == 0)
2817                 return wxACC_FALSE;
2818             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
2819             *toObject = childWindow->GetOrCreateAccessible();
2820
2821             return wxACC_OK;
2822         }
2823     case wxNAVDIR_LASTCHILD:
2824         {
2825             if (GetWindow()->GetChildren().GetCount() == 0)
2826                 return wxACC_FALSE;
2827             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
2828             *toObject = childWindow->GetOrCreateAccessible();
2829
2830             return wxACC_OK;
2831         }
2832     case wxNAVDIR_RIGHT:
2833     case wxNAVDIR_DOWN:
2834     case wxNAVDIR_NEXT:
2835         {
2836             wxWindowList::compatibility_iterator node =
2837                 wxWindowList::compatibility_iterator();
2838             if (fromId == 0)
2839             {
2840                 // Can't navigate to sibling of this window
2841                 // if we're a top-level window.
2842                 if (!GetWindow()->GetParent())
2843                     return wxACC_NOT_IMPLEMENTED;
2844
2845                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2846             }
2847             else
2848             {
2849                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2850                     node = GetWindow()->GetChildren().Item(fromId-1);
2851             }
2852
2853             if (node && node->GetNext())
2854             {
2855                 wxWindow* nextWindow = node->GetNext()->GetData();
2856                 *toObject = nextWindow->GetOrCreateAccessible();
2857                 return wxACC_OK;
2858             }
2859             else
2860                 return wxACC_FALSE;
2861         }
2862     case wxNAVDIR_LEFT:
2863     case wxNAVDIR_UP:
2864     case wxNAVDIR_PREVIOUS:
2865         {
2866             wxWindowList::compatibility_iterator node =
2867                 wxWindowList::compatibility_iterator();
2868             if (fromId == 0)
2869             {
2870                 // Can't navigate to sibling of this window
2871                 // if we're a top-level window.
2872                 if (!GetWindow()->GetParent())
2873                     return wxACC_NOT_IMPLEMENTED;
2874
2875                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2876             }
2877             else
2878             {
2879                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2880                     node = GetWindow()->GetChildren().Item(fromId-1);
2881             }
2882
2883             if (node && node->GetPrevious())
2884             {
2885                 wxWindow* previousWindow = node->GetPrevious()->GetData();
2886                 *toObject = previousWindow->GetOrCreateAccessible();
2887                 return wxACC_OK;
2888             }
2889             else
2890                 return wxACC_FALSE;
2891         }
2892     }
2893
2894     return wxACC_NOT_IMPLEMENTED;
2895 }
2896
2897 // Gets the name of the specified object.
2898 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
2899 {
2900     wxASSERT( GetWindow() != NULL );
2901     if (!GetWindow())
2902         return wxACC_FAIL;
2903
2904     wxString title;
2905
2906     // If a child, leave wxWidgets to call the function on the actual
2907     // child object.
2908     if (childId > 0)
2909         return wxACC_NOT_IMPLEMENTED;
2910
2911     // This will eventually be replaced by specialised
2912     // accessible classes, one for each kind of wxWidgets
2913     // control or window.
2914 #if wxUSE_BUTTON
2915     if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
2916         title = ((wxButton*) GetWindow())->GetLabel();
2917     else
2918 #endif
2919         title = GetWindow()->GetName();
2920
2921     if (!title.empty())
2922     {
2923         *name = title;
2924         return wxACC_OK;
2925     }
2926     else
2927         return wxACC_NOT_IMPLEMENTED;
2928 }
2929
2930 // Gets the number of children.
2931 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
2932 {
2933     wxASSERT( GetWindow() != NULL );
2934     if (!GetWindow())
2935         return wxACC_FAIL;
2936
2937     *childId = (int) GetWindow()->GetChildren().GetCount();
2938     return wxACC_OK;
2939 }
2940
2941 // Gets the specified child (starting from 1).
2942 // If *child is NULL and return value is wxACC_OK,
2943 // this means that the child is a simple element and
2944 // not an accessible object.
2945 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
2946 {
2947     wxASSERT( GetWindow() != NULL );
2948     if (!GetWindow())
2949         return wxACC_FAIL;
2950
2951     if (childId == 0)
2952     {
2953         *child = this;
2954         return wxACC_OK;
2955     }
2956
2957     if (childId > (int) GetWindow()->GetChildren().GetCount())
2958         return wxACC_FAIL;
2959
2960     wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
2961     *child = childWindow->GetOrCreateAccessible();
2962     if (*child)
2963         return wxACC_OK;
2964     else
2965         return wxACC_FAIL;
2966 }
2967
2968 // Gets the parent, or NULL.
2969 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
2970 {
2971     wxASSERT( GetWindow() != NULL );
2972     if (!GetWindow())
2973         return wxACC_FAIL;
2974
2975     wxWindow* parentWindow = GetWindow()->GetParent();
2976     if (!parentWindow)
2977     {
2978         *parent = NULL;
2979         return wxACC_OK;
2980     }
2981     else
2982     {
2983         *parent = parentWindow->GetOrCreateAccessible();
2984         if (*parent)
2985             return wxACC_OK;
2986         else
2987             return wxACC_FAIL;
2988     }
2989 }
2990
2991 // Performs the default action. childId is 0 (the action for this object)
2992 // or > 0 (the action for a child).
2993 // Return wxACC_NOT_SUPPORTED if there is no default action for this
2994 // window (e.g. an edit control).
2995 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
2996 {
2997     wxASSERT( GetWindow() != NULL );
2998     if (!GetWindow())
2999         return wxACC_FAIL;
3000
3001     return wxACC_NOT_IMPLEMENTED;
3002 }
3003
3004 // Gets the default action for this object (0) or > 0 (the action for a child).
3005 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
3006 // string if there is no action.
3007 // The retrieved string describes the action that is performed on an object,
3008 // not what the object does as a result. For example, a toolbar button that prints
3009 // a document has a default action of "Press" rather than "Prints the current document."
3010 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
3011 {
3012     wxASSERT( GetWindow() != NULL );
3013     if (!GetWindow())
3014         return wxACC_FAIL;
3015
3016     return wxACC_NOT_IMPLEMENTED;
3017 }
3018
3019 // Returns the description for this object or a child.
3020 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
3021 {
3022     wxASSERT( GetWindow() != NULL );
3023     if (!GetWindow())
3024         return wxACC_FAIL;
3025
3026     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3027     if (!ht.empty())
3028     {
3029         *description = ht;
3030         return wxACC_OK;
3031     }
3032     return wxACC_NOT_IMPLEMENTED;
3033 }
3034
3035 // Returns help text for this object or a child, similar to tooltip text.
3036 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
3037 {
3038     wxASSERT( GetWindow() != NULL );
3039     if (!GetWindow())
3040         return wxACC_FAIL;
3041
3042     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3043     if (!ht.empty())
3044     {
3045         *helpText = ht;
3046         return wxACC_OK;
3047     }
3048     return wxACC_NOT_IMPLEMENTED;
3049 }
3050
3051 // Returns the keyboard shortcut for this object or child.
3052 // Return e.g. ALT+K
3053 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
3054 {
3055     wxASSERT( GetWindow() != NULL );
3056     if (!GetWindow())
3057         return wxACC_FAIL;
3058
3059     return wxACC_NOT_IMPLEMENTED;
3060 }
3061
3062 // Returns a role constant.
3063 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
3064 {
3065     wxASSERT( GetWindow() != NULL );
3066     if (!GetWindow())
3067         return wxACC_FAIL;
3068
3069     // If a child, leave wxWidgets to call the function on the actual
3070     // child object.
3071     if (childId > 0)
3072         return wxACC_NOT_IMPLEMENTED;
3073
3074     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3075         return wxACC_NOT_IMPLEMENTED;
3076 #if wxUSE_STATUSBAR
3077     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3078         return wxACC_NOT_IMPLEMENTED;
3079 #endif
3080 #if wxUSE_TOOLBAR
3081     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3082         return wxACC_NOT_IMPLEMENTED;
3083 #endif
3084
3085     //*role = wxROLE_SYSTEM_CLIENT;
3086     *role = wxROLE_SYSTEM_CLIENT;
3087     return wxACC_OK;
3088
3089     #if 0
3090     return wxACC_NOT_IMPLEMENTED;
3091     #endif
3092 }
3093
3094 // Returns a state constant.
3095 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
3096 {
3097     wxASSERT( GetWindow() != NULL );
3098     if (!GetWindow())
3099         return wxACC_FAIL;
3100
3101     // If a child, leave wxWidgets to call the function on the actual
3102     // child object.
3103     if (childId > 0)
3104         return wxACC_NOT_IMPLEMENTED;
3105
3106     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3107         return wxACC_NOT_IMPLEMENTED;
3108
3109 #if wxUSE_STATUSBAR
3110     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3111         return wxACC_NOT_IMPLEMENTED;
3112 #endif
3113 #if wxUSE_TOOLBAR
3114     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3115         return wxACC_NOT_IMPLEMENTED;
3116 #endif
3117
3118     *state = 0;
3119     return wxACC_OK;
3120
3121     #if 0
3122     return wxACC_NOT_IMPLEMENTED;
3123     #endif
3124 }
3125
3126 // Returns a localized string representing the value for the object
3127 // or child.
3128 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
3129 {
3130     wxASSERT( GetWindow() != NULL );
3131     if (!GetWindow())
3132         return wxACC_FAIL;
3133
3134     return wxACC_NOT_IMPLEMENTED;
3135 }
3136
3137 // Selects the object or child.
3138 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
3139 {
3140     wxASSERT( GetWindow() != NULL );
3141     if (!GetWindow())
3142         return wxACC_FAIL;
3143
3144     return wxACC_NOT_IMPLEMENTED;
3145 }
3146
3147 // Gets the window with the keyboard focus.
3148 // If childId is 0 and child is NULL, no object in
3149 // this subhierarchy has the focus.
3150 // If this object has the focus, child should be 'this'.
3151 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
3152 {
3153     wxASSERT( GetWindow() != NULL );
3154     if (!GetWindow())
3155         return wxACC_FAIL;
3156
3157     return wxACC_NOT_IMPLEMENTED;
3158 }
3159
3160 #if wxUSE_VARIANT
3161 // Gets a variant representing the selected children
3162 // of this object.
3163 // Acceptable values:
3164 // - a null variant (IsNull() returns true)
3165 // - a list variant (GetType() == wxT("list")
3166 // - an integer representing the selected child element,
3167 //   or 0 if this object is selected (GetType() == wxT("long")
3168 // - a "void*" pointer to a wxAccessible child object
3169 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
3170 {
3171     wxASSERT( GetWindow() != NULL );
3172     if (!GetWindow())
3173         return wxACC_FAIL;
3174
3175     return wxACC_NOT_IMPLEMENTED;
3176 }
3177 #endif // wxUSE_VARIANT
3178
3179 #endif // wxUSE_ACCESSIBILITY
3180
3181 // ----------------------------------------------------------------------------
3182 // RTL support
3183 // ----------------------------------------------------------------------------
3184
3185 wxCoord
3186 wxWindowBase::AdjustForLayoutDirection(wxCoord x,
3187                                        wxCoord width,
3188                                        wxCoord widthTotal) const
3189 {
3190     if ( GetLayoutDirection() == wxLayout_RightToLeft )
3191     {
3192         x = widthTotal - x - width;
3193     }
3194
3195     return x;
3196 }
3197
3198 // ----------------------------------------------------------------------------
3199 // Window (and menu items) identifiers management
3200 // ----------------------------------------------------------------------------
3201
3202 namespace
3203 {
3204
3205 // this array contains, in packed form, the "in use" flags for the entire
3206 // auto-generated ids range: N-th element of the array contains the flags for
3207 // ids in [wxID_AUTO_LOWEST + 8*N, wxID_AUTO_LOWEST + 8*N + 7] range
3208 //
3209 // initially no ids are in use and we allocate them consecutively, but after we
3210 // exhaust the entire range, we wrap around and reuse the ids freed in the
3211 // meanwhile
3212 wxByte gs_autoIdsInUse[(wxID_AUTO_HIGHEST - wxID_AUTO_LOWEST + 1)/8 + 1] = { 0 };
3213
3214 // this is an optimization used until we wrap around wxID_AUTO_HIGHEST: if this
3215 // value is < wxID_AUTO_HIGHEST we know that we haven't wrapped yet and so can
3216 // allocate the ids simply by incrementing it
3217 static wxWindowID gs_nextControlId = wxID_AUTO_LOWEST;
3218
3219 void MarkAutoIdUsed(wxWindowID id)
3220 {
3221     id -= wxID_AUTO_LOWEST;
3222
3223     const int theByte = id / 8;
3224     const int theBit = id % 8;
3225
3226     gs_autoIdsInUse[theByte] |= 1 << theBit;
3227 }
3228
3229 void FreeAutoId(wxWindowID id)
3230 {
3231     id -= wxID_AUTO_LOWEST;
3232
3233     const int theByte = id / 8;
3234     const int theBit = id % 8;
3235
3236     gs_autoIdsInUse[theByte] &= ~(1 << theBit);
3237 }
3238
3239 bool IsAutoIdInUse(wxWindowID id)
3240 {
3241     id -= wxID_AUTO_LOWEST;
3242
3243     const int theByte = id / 8;
3244     const int theBit = id % 8;
3245
3246     return (gs_autoIdsInUse[theByte] & (1 << theBit)) != 0;
3247 }
3248
3249 } // anonymous namespace
3250
3251
3252 /* static */
3253 bool wxWindowBase::IsAutoGeneratedId(wxWindowID id)
3254 {
3255     if ( id < wxID_AUTO_LOWEST || id > wxID_AUTO_HIGHEST )
3256         return false;
3257
3258     // we shouldn't have any stray ids in this range
3259     wxASSERT_MSG( IsAutoIdInUse(id), "unused automatically generated id?" );
3260
3261     return true;
3262 }
3263
3264 wxWindowID wxWindowBase::NewControlId(int count)
3265 {
3266     wxASSERT_MSG( count > 0, "can't allocate less than 1 id" );
3267
3268     if ( gs_nextControlId + count - 1 <= wxID_AUTO_HIGHEST )
3269     {
3270         // we haven't wrapped yet, so we can just grab the next count ids
3271         wxWindowID id = gs_nextControlId;
3272
3273         while ( count-- )
3274             MarkAutoIdUsed(gs_nextControlId++);
3275
3276         return id;
3277     }
3278     else // we've already wrapped or are now going to
3279     {
3280         // brute-force search for the id values
3281
3282         // number of consecutive free ids found so far
3283         int found = 0;
3284
3285         for ( wxWindowID id = wxID_AUTO_LOWEST; id <= wxID_AUTO_HIGHEST; id++ )
3286         {
3287             if ( !IsAutoIdInUse(id) )
3288             {
3289                 // found another consecutive available id
3290                 found++;
3291                 if ( found == count )
3292                 {
3293                     // mark all count consecutive free ids we found as being in
3294                     // use now and rewind back to the start of available range
3295                     // in the process
3296                     while ( count-- )
3297                         MarkAutoIdUsed(id--);
3298
3299                     return id;
3300                 }
3301             }
3302             else // this id is in use
3303             {
3304                 // reset the number of consecutive free values found
3305                 found = 0;
3306             }
3307         }
3308     }
3309
3310     // if we get here, there are not enough consecutive free ids
3311     return wxID_NONE;
3312 }
3313
3314 void wxWindowBase::ReleaseControlId(wxWindowID id)
3315 {
3316     wxCHECK_RET( IsAutoGeneratedId(id), "can't release non auto-generated id" );
3317
3318     FreeAutoId(id);
3319 }