src/common/wincmn.cpp

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