src/common/wincmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/window.cpp
   3 // Purpose:     common (to all ports) wxWindow functions
   4 // Author:      Julian Smart, Vadim Zeitlin
   5 // Modified by:
   6 // Created:     13/07/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWidgets team
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/string.h"
  29     #include "wx/log.h"
  30     #include "wx/intl.h"
  31     #include "wx/frame.h"
  32     #include "wx/window.h"
  33     #include "wx/control.h"
  34     #include "wx/checkbox.h"
  35     #include "wx/radiobut.h"
  36     #include "wx/statbox.h"
  37     #include "wx/textctrl.h"
  38     #include "wx/settings.h"
  39     #include "wx/dialog.h"
  40     #include "wx/msgdlg.h"
  41     #include "wx/statusbr.h"
  42     #include "wx/toolbar.h"
  43     #include "wx/dcclient.h"
  44     #include "wx/scrolbar.h"
  45     #include "wx/layout.h"
  46     #include "wx/sizer.h"
  47     #include "wx/menu.h"
  48 #endif //WX_PRECOMP
  49
  50 #if wxUSE_DRAG_AND_DROP
  51     #include "wx/dnd.h"
  52 #endif // wxUSE_DRAG_AND_DROP
  53
  54 #if wxUSE_ACCESSIBILITY
  55     #include "wx/access.h"
  56 #endif
  57
  58 #if wxUSE_HELP
  59     #include "wx/cshelp.h"
  60 #endif // wxUSE_HELP
  61
  62 #if wxUSE_TOOLTIPS
  63     #include "wx/tooltip.h"
  64 #endif // wxUSE_TOOLTIPS
  65
  66 #if wxUSE_CARET
  67     #include "wx/caret.h"
  68 #endif // wxUSE_CARET
  69
  70 #if wxUSE_SYSTEM_OPTIONS
  71     #include "wx/sysopt.h"
  72 #endif
  73
  74 // For reporting compile- and runtime version of GTK+ in the ctrl+alt+mclick dialog.
  75 // The gtk includes don't pull any other headers in, at least not on my system - MR
  76 #ifdef __WXGTK__
  77     #ifdef __WXGTK20__
  78         #include <gtk/gtkversion.h>
  79     #else
  80         #include <gtk/gtkfeatures.h>
  81     #endif
  82 #endif
  83
  84 #include "wx/platinfo.h"
  85
  86 // Windows List
  87 WXDLLIMPEXP_DATA_CORE(wxWindowList) wxTopLevelWindows;
  88
  89 // globals
  90 #if wxUSE_MENUS
  91 wxMenu *wxCurrentPopupMenu = NULL;
  92 #endif // wxUSE_MENUS
  93
  94 // ----------------------------------------------------------------------------
  95 // static data
  96 // ----------------------------------------------------------------------------
  97
  98
  99 IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
 100
 101 // ----------------------------------------------------------------------------
 102 // event table
 103 // ----------------------------------------------------------------------------
 104
 105 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
 106     EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
 107     EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
 108     EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
 109
 110 #if wxUSE_HELP
 111     EVT_HELP(wxID_ANY, wxWindowBase::OnHelp)
 112 #endif // wxUSE_HELP
 113
 114 END_EVENT_TABLE()
 115
 116 // ============================================================================
 117 // implementation of the common functionality of the wxWindow class
 118 // ============================================================================
 119
 120 // ----------------------------------------------------------------------------
 121 // initialization
 122 // ----------------------------------------------------------------------------
 123
 124 // the default initialization
 125 wxWindowBase::wxWindowBase()
 126 {
 127     // no window yet, no parent nor children
 128     m_parent = NULL;
 129     m_windowId = wxID_ANY;
 130
 131     // no constraints on the minimal window size
 132     m_minWidth =
 133     m_maxWidth = wxDefaultCoord;
 134     m_minHeight =
 135     m_maxHeight = wxDefaultCoord;
 136
 137     // invalidiated cache value
 138     m_bestSizeCache = wxDefaultSize;
 139
 140     // window are created enabled and visible by default
 141     m_isShown =
 142     m_isEnabled = true;
 143
 144     // the default event handler is just this window
 145     m_eventHandler = this;
 146
 147 #if wxUSE_VALIDATORS
 148     // no validator
 149     m_windowValidator = NULL;
 150 #endif // wxUSE_VALIDATORS
 151
 152     // the colours/fonts are default for now, so leave m_font,
 153     // m_backgroundColour and m_foregroundColour uninitialized and set those
 154     m_hasBgCol =
 155     m_hasFgCol =
 156     m_hasFont = false;
 157     m_inheritBgCol =
 158     m_inheritFgCol =
 159     m_inheritFont = false;
 160
 161     // no style bits
 162     m_exStyle =
 163     m_windowStyle = 0;
 164
 165     m_backgroundStyle = wxBG_STYLE_SYSTEM;
 166
 167 #if wxUSE_CONSTRAINTS
 168     // no constraints whatsoever
 169     m_constraints = NULL;
 170     m_constraintsInvolvedIn = NULL;
 171 #endif // wxUSE_CONSTRAINTS
 172
 173     m_windowSizer = NULL;
 174     m_containingSizer = NULL;
 175     m_autoLayout = false;
 176
 177 #if wxUSE_DRAG_AND_DROP
 178     m_dropTarget = NULL;
 179 #endif // wxUSE_DRAG_AND_DROP
 180
 181 #if wxUSE_TOOLTIPS
 182     m_tooltip = NULL;
 183 #endif // wxUSE_TOOLTIPS
 184
 185 #if wxUSE_CARET
 186     m_caret = NULL;
 187 #endif // wxUSE_CARET
 188
 189 #if wxUSE_PALETTE
 190     m_hasCustomPalette = false;
 191 #endif // wxUSE_PALETTE
 192
 193 #if wxUSE_ACCESSIBILITY
 194     m_accessible = NULL;
 195 #endif
 196
 197     m_virtualSize = wxDefaultSize;
 198
 199     m_scrollHelper = NULL;
 200
 201     m_windowVariant = wxWINDOW_VARIANT_NORMAL;
 202 #if wxUSE_SYSTEM_OPTIONS
 203     if ( wxSystemOptions::HasOption(wxWINDOW_DEFAULT_VARIANT) )
 204     {
 205        m_windowVariant = (wxWindowVariant) wxSystemOptions::GetOptionInt( wxWINDOW_DEFAULT_VARIANT ) ;
 206     }
 207 #endif
 208
 209     // Whether we're using the current theme for this window (wxGTK only for now)
 210     m_themeEnabled = false;
 211
 212     // VZ: this one shouldn't exist...
 213     m_isBeingDeleted = false;
 214
 215     m_freezeCount = 0;
 216 }
 217
 218 // common part of window creation process
 219 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 220                               wxWindowID id,
 221                               const wxPoint& WXUNUSED(pos),
 222                               const wxSize& WXUNUSED(size),
 223                               long style,
 224                               const wxValidator& wxVALIDATOR_PARAM(validator),
 225                               const wxString& name)
 226 {
 227 #if wxUSE_STATBOX
 228     // wxGTK doesn't allow to create controls with static box as the parent so
 229     // this will result in a crash when the program is ported to wxGTK so warn
 230     // the user about it
 231
 232     // if you get this assert, the correct solution is to create the controls
 233     // as siblings of the static box
 234     wxASSERT_MSG( !parent || !wxDynamicCast(parent, wxStaticBox),
 235                   _T("wxStaticBox can't be used as a window parent!") );
 236 #endif // wxUSE_STATBOX
 237
 238     // ids are limited to 16 bits under MSW so if you care about portability,
 239     // it's not a good idea to use ids out of this range (and negative ids are
 240     // reserved for wxWidgets own usage)
 241     wxASSERT_MSG( id == wxID_ANY || (id >= 0 && id < 32767) ||
 242                   (id >= wxID_AUTO_LOWEST && id <= wxID_AUTO_HIGHEST),
 243                   _T("invalid id value") );
 244
 245     // generate a new id if the user doesn't care about it
 246     if ( id == wxID_ANY )
 247     {
 248         m_windowId = NewControlId();
 249     }
 250     else // valid id specified
 251     {
 252         m_windowId = id;
 253     }
 254
 255     // don't use SetWindowStyleFlag() here, this function should only be called
 256     // to change the flag after creation as it tries to reflect the changes in
 257     // flags by updating the window dynamically and we don't need this here
 258     m_windowStyle = style;
 259
 260     SetName(name);
 261     SetParent(parent);
 262
 263 #if wxUSE_VALIDATORS
 264     SetValidator(validator);
 265 #endif // wxUSE_VALIDATORS
 266
 267     // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
 268     // have it too - like this it's possible to set it only in the top level
 269     // dialog/frame and all children will inherit it by defult
 270     if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
 271     {
 272         SetExtraStyle(GetExtraStyle() | wxWS_EX_VALIDATE_RECURSIVELY);
 273     }
 274
 275     return true;
 276 }
 277
 278 bool wxWindowBase::ToggleWindowStyle(int flag)
 279 {
 280     wxASSERT_MSG( flag, _T("flags with 0 value can't be toggled") );
 281
 282     bool rc;
 283     long style = GetWindowStyleFlag();
 284     if ( style & flag )
 285     {
 286         style &= ~flag;
 287         rc = false;
 288     }
 289     else // currently off
 290     {
 291         style |= flag;
 292         rc = true;
 293     }
 294
 295     SetWindowStyleFlag(style);
 296
 297     return rc;
 298 }
 299
 300 // ----------------------------------------------------------------------------
 301 // destruction
 302 // ----------------------------------------------------------------------------
 303
 304 // common clean up
 305 wxWindowBase::~wxWindowBase()
 306 {
 307     wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
 308
 309     // FIXME if these 2 cases result from programming errors in the user code
 310     //       we should probably assert here instead of silently fixing them
 311
 312     // Just in case the window has been Closed, but we're then deleting
 313     // immediately: don't leave dangling pointers.
 314     wxPendingDelete.DeleteObject(this);
 315
 316     // Just in case we've loaded a top-level window via LoadNativeDialog but
 317     // we weren't a dialog class
 318     wxTopLevelWindows.DeleteObject((wxWindow*)this);
 319
 320 #if wxUSE_MENUS
 321     // The associated popup menu can still be alive, disassociate from it in
 322     // this case
 323     if ( wxCurrentPopupMenu && wxCurrentPopupMenu->GetInvokingWindow() == this )
 324         wxCurrentPopupMenu->SetInvokingWindow(NULL);
 325 #endif // wxUSE_MENUS
 326
 327     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 328
 329     // notify the parent about this window destruction
 330     if ( m_parent )
 331         m_parent->RemoveChild(this);
 332
 333 #if wxUSE_CARET
 334     delete m_caret;
 335 #endif // wxUSE_CARET
 336
 337 #if wxUSE_VALIDATORS
 338     delete m_windowValidator;
 339 #endif // wxUSE_VALIDATORS
 340
 341 #if wxUSE_CONSTRAINTS
 342     // Have to delete constraints/sizer FIRST otherwise sizers may try to look
 343     // at deleted windows as they delete themselves.
 344     DeleteRelatedConstraints();
 345
 346     if ( m_constraints )
 347     {
 348         // This removes any dangling pointers to this window in other windows'
 349         // constraintsInvolvedIn lists.
 350         UnsetConstraints(m_constraints);
 351         delete m_constraints;
 352         m_constraints = NULL;
 353     }
 354 #endif // wxUSE_CONSTRAINTS
 355
 356     if ( m_containingSizer )
 357         m_containingSizer->Detach( (wxWindow*)this );
 358
 359     delete m_windowSizer;
 360
 361 #if wxUSE_DRAG_AND_DROP
 362     delete m_dropTarget;
 363 #endif // wxUSE_DRAG_AND_DROP
 364
 365 #if wxUSE_TOOLTIPS
 366     delete m_tooltip;
 367 #endif // wxUSE_TOOLTIPS
 368
 369 #if wxUSE_ACCESSIBILITY
 370     delete m_accessible;
 371 #endif
 372
 373 #if wxUSE_HELP
 374     // NB: this has to be called unconditionally, because we don't know
 375     //     whether this window has associated help text or not
 376     wxHelpProvider *helpProvider = wxHelpProvider::Get();
 377     if ( helpProvider )
 378         helpProvider->RemoveHelp(this);
 379 #endif
 380 }
 381
 382 bool wxWindowBase::IsBeingDeleted() const
 383 {
 384     return m_isBeingDeleted ||
 385             (!IsTopLevel() && m_parent && m_parent->IsBeingDeleted());
 386 }
 387
 388 void wxWindowBase::SendDestroyEvent()
 389 {
 390     wxWindowDestroyEvent event;
 391     event.SetEventObject(this);
 392     event.SetId(GetId());
 393     GetEventHandler()->ProcessEvent(event);
 394 }
 395
 396 bool wxWindowBase::Destroy()
 397 {
 398     delete this;
 399
 400     return true;
 401 }
 402
 403 bool wxWindowBase::Close(bool force)
 404 {
 405     wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
 406     event.SetEventObject(this);
 407     event.SetCanVeto(!force);
 408
 409     // return false if window wasn't closed because the application vetoed the
 410     // close event
 411     return HandleWindowEvent(event) && !event.GetVeto();
 412 }
 413
 414 bool wxWindowBase::DestroyChildren()
 415 {
 416     wxWindowList::compatibility_iterator node;
 417     for ( ;; )
 418     {
 419         // we iterate until the list becomes empty
 420         node = GetChildren().GetFirst();
 421         if ( !node )
 422             break;
 423
 424         wxWindow *child = node->GetData();
 425
 426         // note that we really want to call delete and not ->Destroy() here
 427         // because we want to delete the child immediately, before we are
 428         // deleted, and delayed deletion would result in problems as our (top
 429         // level) child could outlive its parent
 430         delete child;
 431
 432         wxASSERT_MSG( !GetChildren().Find(child),
 433                       wxT("child didn't remove itself using RemoveChild()") );
 434     }
 435
 436     return true;
 437 }
 438
 439 // ----------------------------------------------------------------------------
 440 // size/position related methods
 441 // ----------------------------------------------------------------------------
 442
 443 // centre the window with respect to its parent in either (or both) directions
 444 void wxWindowBase::DoCentre(int dir)
 445 {
 446     wxCHECK_RET( !(dir & wxCENTRE_ON_SCREEN) && GetParent(),
 447                  _T("this method only implements centering child windows") );
 448
 449     SetSize(GetRect().CentreIn(GetParent()->GetClientSize(), dir));
 450 }
 451
 452 // fits the window around the children
 453 void wxWindowBase::Fit()
 454 {
 455     if ( !GetChildren().empty() )
 456     {
 457         SetSize(GetBestSize());
 458     }
 459     //else: do nothing if we have no children
 460 }
 461
 462 // fits virtual size (ie. scrolled area etc.) around children
 463 void wxWindowBase::FitInside()
 464 {
 465     if ( GetChildren().GetCount() > 0 )
 466     {
 467         SetVirtualSize( GetBestVirtualSize() );
 468     }
 469 }
 470
 471 // On Mac, scrollbars are explicitly children.
 472 #ifdef __WXMAC__
 473 static bool wxHasRealChildren(const wxWindowBase* win)
 474 {
 475     int realChildCount = 0;
 476
 477     for ( wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
 478           node;
 479           node = node->GetNext() )
 480     {
 481         wxWindow *win = node->GetData();
 482         if ( !win->IsTopLevel() && win->IsShown() && !win->IsKindOf(CLASSINFO(wxScrollBar)))
 483             realChildCount ++;
 484     }
 485     return (realChildCount > 0);
 486 }
 487 #endif
 488
 489 void wxWindowBase::InvalidateBestSize()
 490 {
 491     m_bestSizeCache = wxDefaultSize;
 492
 493     // parent's best size calculation may depend on its children's
 494     // as long as child window we are in is not top level window itself
 495     // (because the TLW size is never resized automatically)
 496     // so let's invalidate it as well to be safe:
 497     if (m_parent && !IsTopLevel())
 498         m_parent->InvalidateBestSize();
 499 }
 500
 501 // return the size best suited for the current window
 502 wxSize wxWindowBase::DoGetBestSize() const
 503 {
 504     wxSize best;
 505
 506     if ( m_windowSizer )
 507     {
 508         best = m_windowSizer->GetMinSize();
 509     }
 510 #if wxUSE_CONSTRAINTS
 511     else if ( m_constraints )
 512     {
 513         wxConstCast(this, wxWindowBase)->SatisfyConstraints();
 514
 515         // our minimal acceptable size is such that all our windows fit inside
 516         int maxX = 0,
 517             maxY = 0;
 518
 519         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 520               node;
 521               node = node->GetNext() )
 522         {
 523             wxLayoutConstraints *c = node->GetData()->GetConstraints();
 524             if ( !c )
 525             {
 526                 // it's not normal that we have an unconstrained child, but
 527                 // what can we do about it?
 528                 continue;
 529             }
 530
 531             int x = c->right.GetValue(),
 532                 y = c->bottom.GetValue();
 533
 534             if ( x > maxX )
 535                 maxX = x;
 536
 537             if ( y > maxY )
 538                 maxY = y;
 539
 540             // TODO: we must calculate the overlaps somehow, otherwise we
 541             //       will never return a size bigger than the current one :-(
 542         }
 543
 544         best = wxSize(maxX, maxY);
 545     }
 546 #endif // wxUSE_CONSTRAINTS
 547     else if ( !GetChildren().empty()
 548 #ifdef __WXMAC__
 549               && wxHasRealChildren(this)
 550 #endif
 551               )
 552     {
 553         // our minimal acceptable size is such that all our visible child
 554         // windows fit inside
 555         int maxX = 0,
 556             maxY = 0;
 557
 558         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 559               node;
 560               node = node->GetNext() )
 561         {
 562             wxWindow *win = node->GetData();
 563             if ( win->IsTopLevel()
 564                     || !win->IsShown()
 565 #if wxUSE_STATUSBAR
 566                         || wxDynamicCast(win, wxStatusBar)
 567 #endif // wxUSE_STATUSBAR
 568                )
 569             {
 570                 // dialogs and frames lie in different top level windows -
 571                 // don't deal with them here; as for the status bars, they
 572                 // don't lie in the client area at all
 573                 continue;
 574             }
 575
 576             int wx, wy, ww, wh;
 577             win->GetPosition(&wx, &wy);
 578
 579             // if the window hadn't been positioned yet, assume that it is in
 580             // the origin
 581             if ( wx == wxDefaultCoord )
 582                 wx = 0;
 583             if ( wy == wxDefaultCoord )
 584                 wy = 0;
 585
 586             win->GetSize(&ww, &wh);
 587             if ( wx + ww > maxX )
 588                 maxX = wx + ww;
 589             if ( wy + wh > maxY )
 590                 maxY = wy + wh;
 591         }
 592
 593         best = wxSize(maxX, maxY);
 594     }
 595     else // ! has children
 596     {
 597         // for a generic window there is no natural best size so, if the
 598         // minimal size is not set, use the current size but take care to
 599         // remember it as minimal size for the next time because our best size
 600         // should be constant: otherwise we could get into a situation when the
 601         // window is initially at some size, then expanded to a larger size and
 602         // then, when the containing window is shrunk back (because our initial
 603         // best size had been used for computing the parent min size), we can't
 604         // be shrunk back any more because our best size is now bigger
 605         wxSize size = GetMinSize();
 606         if ( !size.IsFullySpecified() )
 607         {
 608             size.SetDefaults(GetSize());
 609             wxConstCast(this, wxWindowBase)->SetMinSize(size);
 610         }
 611
 612         // return as-is, unadjusted by the client size difference.
 613         return size;
 614     }
 615
 616     // Add any difference between size and client size
 617     wxSize diff = GetSize() - GetClientSize();
 618     best.x += wxMax(0, diff.x);
 619     best.y += wxMax(0, diff.y);
 620
 621     return best;
 622 }
 623
 624 // helper of GetWindowBorderSize(): as many ports don't implement support for
 625 // wxSYS_BORDER/EDGE_X/Y metrics in their wxSystemSettings, use hard coded
 626 // fallbacks in this case
 627 static int wxGetMetricOrDefault(wxSystemMetric what, const wxWindowBase* win)
 628 {
 629     int rc = wxSystemSettings::GetMetric(
 630         what, static_cast<wxWindow*>(const_cast<wxWindowBase*>(win)));
 631     if ( rc == -1 )
 632     {
 633         switch ( what )
 634         {
 635             case wxSYS_BORDER_X:
 636             case wxSYS_BORDER_Y:
 637                 // 2D border is by default 1 pixel wide
 638                 rc = 1;
 639                 break;
 640
 641             case wxSYS_EDGE_X:
 642             case wxSYS_EDGE_Y:
 643                 // 3D borders are by default 2 pixels
 644                 rc = 2;
 645                 break;
 646
 647             default:
 648                 wxFAIL_MSG( _T("unexpected wxGetMetricOrDefault() argument") );
 649                 rc = 0;
 650         }
 651     }
 652
 653     return rc;
 654 }
 655
 656 wxSize wxWindowBase::GetWindowBorderSize() const
 657 {
 658     wxSize size;
 659
 660     switch ( GetBorder() )
 661     {
 662         case wxBORDER_NONE:
 663             // nothing to do, size is already (0, 0)
 664             break;
 665
 666         case wxBORDER_SIMPLE:
 667         case wxBORDER_STATIC:
 668             size.x = wxGetMetricOrDefault(wxSYS_BORDER_X, this);
 669             size.y = wxGetMetricOrDefault(wxSYS_BORDER_Y, this);
 670             break;
 671
 672         case wxBORDER_SUNKEN:
 673         case wxBORDER_RAISED:
 674             size.x = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_X, this),
 675                            wxGetMetricOrDefault(wxSYS_BORDER_X, this));
 676             size.y = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_Y, this),
 677                            wxGetMetricOrDefault(wxSYS_BORDER_Y, this));
 678             break;
 679
 680         case wxBORDER_DOUBLE:
 681             size.x = wxGetMetricOrDefault(wxSYS_EDGE_X, this) +
 682                         wxGetMetricOrDefault(wxSYS_BORDER_X, this);
 683             size.y = wxGetMetricOrDefault(wxSYS_EDGE_Y, this) +
 684                         wxGetMetricOrDefault(wxSYS_BORDER_Y, this);
 685             break;
 686
 687         default:
 688             wxFAIL_MSG(_T("Unknown border style."));
 689             break;
 690     }
 691
 692     // we have borders on both sides
 693     return size*2;
 694 }
 695
 696 wxSize wxWindowBase::GetEffectiveMinSize() const
 697 {
 698     // merge the best size with the min size, giving priority to the min size
 699     wxSize min = GetMinSize();
 700     if (min.x == wxDefaultCoord || min.y == wxDefaultCoord)
 701     {
 702         wxSize best = GetBestSize();
 703         if (min.x == wxDefaultCoord) min.x =  best.x;
 704         if (min.y == wxDefaultCoord) min.y =  best.y;
 705     }
 706     return min;
 707 }
 708
 709
 710 void wxWindowBase::SetInitialSize(const wxSize& size)
 711 {
 712     // Set the min size to the size passed in.  This will usually either be
 713     // wxDefaultSize or the size passed to this window's ctor/Create function.
 714     SetMinSize(size);
 715
 716     // Merge the size with the best size if needed
 717     wxSize best = GetEffectiveMinSize();
 718
 719     // If the current size doesn't match then change it
 720     if (GetSize() != best)
 721         SetSize(best);
 722 }
 723
 724
 725 // by default the origin is not shifted
 726 wxPoint wxWindowBase::GetClientAreaOrigin() const
 727 {
 728     return wxPoint(0,0);
 729 }
 730
 731 wxSize wxWindowBase::ClientToWindowSize(const wxSize& size) const
 732 {
 733     const wxSize diff(GetSize() - GetClientSize());
 734
 735     return wxSize(size.x == -1 ? -1 : size.x + diff.x,
 736                   size.y == -1 ? -1 : size.y + diff.y);
 737 }
 738
 739 wxSize wxWindowBase::WindowToClientSize(const wxSize& size) const
 740 {
 741     const wxSize diff(GetSize() - GetClientSize());
 742
 743     return wxSize(size.x == -1 ? -1 : size.x - diff.x,
 744                   size.y == -1 ? -1 : size.y - diff.y);
 745 }
 746
 747 void wxWindowBase::SetWindowVariant( wxWindowVariant variant )
 748 {
 749     if ( m_windowVariant != variant )
 750     {
 751         m_windowVariant = variant;
 752
 753         DoSetWindowVariant(variant);
 754     }
 755 }
 756
 757 void wxWindowBase::DoSetWindowVariant( wxWindowVariant variant )
 758 {
 759     // adjust the font height to correspond to our new variant (notice that
 760     // we're only called if something really changed)
 761     wxFont font = GetFont();
 762     int size = font.GetPointSize();
 763     switch ( variant )
 764     {
 765         case wxWINDOW_VARIANT_NORMAL:
 766             break;
 767
 768         case wxWINDOW_VARIANT_SMALL:
 769             size *= 3;
 770             size /= 4;
 771             break;
 772
 773         case wxWINDOW_VARIANT_MINI:
 774             size *= 2;
 775             size /= 3;
 776             break;
 777
 778         case wxWINDOW_VARIANT_LARGE:
 779             size *= 5;
 780             size /= 4;
 781             break;
 782
 783         default:
 784             wxFAIL_MSG(_T("unexpected window variant"));
 785             break;
 786     }
 787
 788     font.SetPointSize(size);
 789     SetFont(font);
 790 }
 791
 792 void wxWindowBase::DoSetSizeHints( int minW, int minH,
 793                                    int maxW, int maxH,
 794                                    int WXUNUSED(incW), int WXUNUSED(incH) )
 795 {
 796     wxCHECK_RET( (minW == wxDefaultCoord || maxW == wxDefaultCoord || minW <= maxW) &&
 797                     (minH == wxDefaultCoord || maxH == wxDefaultCoord || minH <= maxH),
 798                  _T("min width/height must be less than max width/height!") );
 799
 800     m_minWidth = minW;
 801     m_maxWidth = maxW;
 802     m_minHeight = minH;
 803     m_maxHeight = maxH;
 804 }
 805
 806
 807 #if WXWIN_COMPATIBILITY_2_8
 808 void wxWindowBase::SetVirtualSizeHints(int WXUNUSED(minW), int WXUNUSED(minH),
 809                                        int WXUNUSED(maxW), int WXUNUSED(maxH))
 810 {
 811 }
 812
 813 void wxWindowBase::SetVirtualSizeHints(const wxSize& WXUNUSED(minsize),
 814                                        const wxSize& WXUNUSED(maxsize))
 815 {
 816 }
 817 #endif // WXWIN_COMPATIBILITY_2_8
 818
 819 void wxWindowBase::DoSetVirtualSize( int x, int y )
 820 {
 821     m_virtualSize = wxSize(x, y);
 822 }
 823
 824 wxSize wxWindowBase::DoGetVirtualSize() const
 825 {
 826     // we should use the entire client area so if it is greater than our
 827     // virtual size, expand it to fit (otherwise if the window is big enough we
 828     // wouldn't be using parts of it)
 829     wxSize size = GetClientSize();
 830     if ( m_virtualSize.x > size.x )
 831         size.x = m_virtualSize.x;
 832
 833     if ( m_virtualSize.y >= size.y )
 834         size.y = m_virtualSize.y;
 835
 836     return size;
 837 }
 838
 839 void wxWindowBase::DoGetScreenPosition(int *x, int *y) const
 840 {
 841     // screen position is the same as (0, 0) in client coords for non TLWs (and
 842     // TLWs override this method)
 843     if ( x )
 844         *x = 0;
 845     if ( y )
 846         *y = 0;
 847
 848     ClientToScreen(x, y);
 849 }
 850
 851 void wxWindowBase::SendSizeEvent(int flags)
 852 {
 853     wxSizeEvent event(GetSize(), GetId());
 854     event.SetEventObject(this);
 855     if ( flags & wxSEND_EVENT_POST )
 856         wxPostEvent(this, event);
 857     else
 858         HandleWindowEvent(event);
 859 }
 860
 861 void wxWindowBase::SendSizeEventToParent(int flags)
 862 {
 863     wxWindow * const parent = GetParent();
 864     if ( parent && !parent->IsBeingDeleted() )
 865         parent->SendSizeEvent(flags);
 866 }
 867
 868 // ----------------------------------------------------------------------------
 869 // show/hide/enable/disable the window
 870 // ----------------------------------------------------------------------------
 871
 872 bool wxWindowBase::Show(bool show)
 873 {
 874     if ( show != m_isShown )
 875     {
 876         m_isShown = show;
 877
 878         return true;
 879     }
 880     else
 881     {
 882         return false;
 883     }
 884 }
 885
 886 bool wxWindowBase::IsEnabled() const
 887 {
 888     return IsThisEnabled() && (IsTopLevel() || !GetParent() || GetParent()->IsEnabled());
 889 }
 890
 891 void wxWindowBase::NotifyWindowOnEnableChange(bool enabled)
 892 {
 893 #ifndef wxHAS_NATIVE_ENABLED_MANAGEMENT
 894     DoEnable(enabled);
 895 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 896
 897     OnEnabled(enabled);
 898
 899     // If we are top-level then the logic doesn't apply - otherwise
 900     // showing a modal dialog would result in total greying out (and ungreying
 901     // out later) of everything which would be really ugly
 902     if ( IsTopLevel() )
 903         return;
 904
 905     for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 906           node;
 907           node = node->GetNext() )
 908     {
 909         wxWindowBase * const child = node->GetData();
 910         if ( !child->IsTopLevel() && child->IsThisEnabled() )
 911             child->NotifyWindowOnEnableChange(enabled);
 912     }
 913 }
 914
 915 bool wxWindowBase::Enable(bool enable)
 916 {
 917     if ( enable == IsThisEnabled() )
 918         return false;
 919
 920     m_isEnabled = enable;
 921
 922 #ifdef wxHAS_NATIVE_ENABLED_MANAGEMENT
 923     DoEnable(enable);
 924 #else // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 925     wxWindowBase * const parent = GetParent();
 926     if( !IsTopLevel() && parent && !parent->IsEnabled() )
 927     {
 928         return true;
 929     }
 930 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 931
 932     NotifyWindowOnEnableChange(enable);
 933
 934     return true;
 935 }
 936
 937 bool wxWindowBase::IsShownOnScreen() const
 938 {
 939     // A window is shown on screen if it itself is shown and so are all its
 940     // parents. But if a window is toplevel one, then its always visible on
 941     // screen if IsShown() returns true, even if it has a hidden parent.
 942     return IsShown() &&
 943            (IsTopLevel() || GetParent() == NULL || GetParent()->IsShownOnScreen());
 944 }
 945
 946 // ----------------------------------------------------------------------------
 947 // RTTI
 948 // ----------------------------------------------------------------------------
 949
 950 bool wxWindowBase::IsTopLevel() const
 951 {
 952     return false;
 953 }
 954
 955 // ----------------------------------------------------------------------------
 956 // Freeze/Thaw
 957 // ----------------------------------------------------------------------------
 958
 959 void wxWindowBase::Freeze()
 960 {
 961     if ( !m_freezeCount++ )
 962     {
 963         // physically freeze this window:
 964         DoFreeze();
 965
 966         // and recursively freeze all children:
 967         for ( wxWindowList::iterator i = GetChildren().begin();
 968               i != GetChildren().end(); ++i )
 969         {
 970             wxWindow *child = *i;
 971             if ( child->IsTopLevel() )
 972                 continue;
 973
 974             child->Freeze();
 975         }
 976     }
 977 }
 978
 979 void wxWindowBase::Thaw()
 980 {
 981     wxASSERT_MSG( m_freezeCount, "Thaw() without matching Freeze()" );
 982
 983     if ( !--m_freezeCount )
 984     {
 985         // recursively thaw all children:
 986         for ( wxWindowList::iterator i = GetChildren().begin();
 987               i != GetChildren().end(); ++i )
 988         {
 989             wxWindow *child = *i;
 990             if ( child->IsTopLevel() )
 991                 continue;
 992
 993             child->Thaw();
 994         }
 995
 996         // physically thaw this window:
 997         DoThaw();
 998     }
 999 }
1000
1001 // ----------------------------------------------------------------------------
1002 // reparenting the window
1003 // ----------------------------------------------------------------------------
1004
1005 void wxWindowBase::AddChild(wxWindowBase *child)
1006 {
1007     wxCHECK_RET( child, wxT("can't add a NULL child") );
1008
1009     // this should never happen and it will lead to a crash later if it does
1010     // because RemoveChild() will remove only one node from the children list
1011     // and the other(s) one(s) will be left with dangling pointers in them
1012     wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), _T("AddChild() called twice") );
1013
1014     GetChildren().Append((wxWindow*)child);
1015     child->SetParent(this);
1016
1017     // adding a child while frozen will assert when thawed, so freeze it as if
1018     // it had been already present when we were frozen
1019     if ( IsFrozen() && !child->IsTopLevel() )
1020         child->Freeze();
1021 }
1022
1023 void wxWindowBase::RemoveChild(wxWindowBase *child)
1024 {
1025     wxCHECK_RET( child, wxT("can't remove a NULL child") );
1026
1027     // removing a child while frozen may result in permanently frozen window
1028     // if used e.g. from Reparent(), so thaw it
1029     //
1030     // NB: IsTopLevel() doesn't return true any more when a TLW child is being
1031     //     removed from its ~wxWindowBase, so check for IsBeingDeleted() too
1032     if ( IsFrozen() && !child->IsBeingDeleted() && !child->IsTopLevel() )
1033         child->Thaw();
1034
1035     GetChildren().DeleteObject((wxWindow *)child);
1036     child->SetParent(NULL);
1037 }
1038
1039 bool wxWindowBase::Reparent(wxWindowBase *newParent)
1040 {
1041     wxWindow *oldParent = GetParent();
1042     if ( newParent == oldParent )
1043     {
1044         // nothing done
1045         return false;
1046     }
1047
1048     const bool oldEnabledState = IsEnabled();
1049
1050     // unlink this window from the existing parent.
1051     if ( oldParent )
1052     {
1053         oldParent->RemoveChild(this);
1054     }
1055     else
1056     {
1057         wxTopLevelWindows.DeleteObject((wxWindow *)this);
1058     }
1059
1060     // add it to the new one
1061     if ( newParent )
1062     {
1063         newParent->AddChild(this);
1064     }
1065     else
1066     {
1067         wxTopLevelWindows.Append((wxWindow *)this);
1068     }
1069
1070     // We need to notify window (and its subwindows) if by changing the parent
1071     // we also change our enabled/disabled status.
1072     const bool newEnabledState = IsEnabled();
1073     if ( newEnabledState != oldEnabledState )
1074     {
1075         NotifyWindowOnEnableChange(newEnabledState);
1076     }
1077
1078     return true;
1079 }
1080
1081 // ----------------------------------------------------------------------------
1082 // event handler stuff
1083 // ----------------------------------------------------------------------------
1084
1085 void wxWindowBase::PushEventHandler(wxEvtHandler *handler)
1086 {
1087     wxEvtHandler *handlerOld = GetEventHandler();
1088
1089     handler->SetNextHandler(handlerOld);
1090
1091     if ( handlerOld )
1092         GetEventHandler()->SetPreviousHandler(handler);
1093
1094     SetEventHandler(handler);
1095 }
1096
1097 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
1098 {
1099     wxEvtHandler *handlerA = GetEventHandler();
1100     if ( handlerA )
1101     {
1102         wxEvtHandler *handlerB = handlerA->GetNextHandler();
1103         handlerA->SetNextHandler(NULL);
1104
1105         if ( handlerB )
1106             handlerB->SetPreviousHandler(NULL);
1107         SetEventHandler(handlerB);
1108
1109         if ( deleteHandler )
1110         {
1111             delete handlerA;
1112             handlerA = NULL;
1113         }
1114     }
1115
1116     return handlerA;
1117 }
1118
1119 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handler)
1120 {
1121     wxCHECK_MSG( handler, false, _T("RemoveEventHandler(NULL) called") );
1122
1123     wxEvtHandler *handlerPrev = NULL,
1124                  *handlerCur = GetEventHandler();
1125     while ( handlerCur )
1126     {
1127         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
1128
1129         if ( handlerCur == handler )
1130         {
1131             if ( handlerPrev )
1132             {
1133                 handlerPrev->SetNextHandler(handlerNext);
1134             }
1135             else
1136             {
1137                 SetEventHandler(handlerNext);
1138             }
1139
1140             if ( handlerNext )
1141             {
1142                 handlerNext->SetPreviousHandler ( handlerPrev );
1143             }
1144
1145             handler->SetNextHandler(NULL);
1146             handler->SetPreviousHandler(NULL);
1147
1148             return true;
1149         }
1150
1151         handlerPrev = handlerCur;
1152         handlerCur = handlerNext;
1153     }
1154
1155     wxFAIL_MSG( _T("where has the event handler gone?") );
1156
1157     return false;
1158 }
1159
1160 bool wxWindowBase::HandleWindowEvent(wxEvent& event) const
1161 {
1162     return GetEventHandler()->SafelyProcessEvent(event);
1163 }
1164
1165 // ----------------------------------------------------------------------------
1166 // colours, fonts &c
1167 // ----------------------------------------------------------------------------
1168
1169 void wxWindowBase::InheritAttributes()
1170 {
1171     const wxWindowBase * const parent = GetParent();
1172     if ( !parent )
1173         return;
1174
1175     // we only inherit attributes which had been explicitly set for the parent
1176     // which ensures that this only happens if the user really wants it and
1177     // not by default which wouldn't make any sense in modern GUIs where the
1178     // controls don't all use the same fonts (nor colours)
1179     if ( parent->m_inheritFont && !m_hasFont )
1180         SetFont(parent->GetFont());
1181
1182     // in addition, there is a possibility to explicitly forbid inheriting
1183     // colours at each class level by overriding ShouldInheritColours()
1184     if ( ShouldInheritColours() )
1185     {
1186         if ( parent->m_inheritFgCol && !m_hasFgCol )
1187             SetForegroundColour(parent->GetForegroundColour());
1188
1189         // inheriting (solid) background colour is wrong as it totally breaks
1190         // any kind of themed backgrounds
1191         //
1192         // instead, the controls should use the same background as their parent
1193         // (ideally by not drawing it at all)
1194 #if 0
1195         if ( parent->m_inheritBgCol && !m_hasBgCol )
1196             SetBackgroundColour(parent->GetBackgroundColour());
1197 #endif // 0
1198     }
1199 }
1200
1201 /* static */ wxVisualAttributes
1202 wxWindowBase::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1203 {
1204     // it is important to return valid values for all attributes from here,
1205     // GetXXX() below rely on this
1206     wxVisualAttributes attrs;
1207     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
1208     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
1209
1210     // On Smartphone/PocketPC, wxSYS_COLOUR_WINDOW is a better reflection of
1211     // the usual background colour than wxSYS_COLOUR_BTNFACE.
1212     // It's a pity that wxSYS_COLOUR_WINDOW isn't always a suitable background
1213     // colour on other platforms.
1214
1215 #if defined(__WXWINCE__) && (defined(__SMARTPHONE__) || defined(__POCKETPC__))
1216     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1217 #else
1218     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
1219 #endif
1220     return attrs;
1221 }
1222
1223 wxColour wxWindowBase::GetBackgroundColour() const
1224 {
1225     if ( !m_backgroundColour.IsOk() )
1226     {
1227         wxASSERT_MSG( !m_hasBgCol, _T("we have invalid explicit bg colour?") );
1228
1229         // get our default background colour
1230         wxColour colBg = GetDefaultAttributes().colBg;
1231
1232         // we must return some valid colour to avoid redoing this every time
1233         // and also to avoid surprizing the applications written for older
1234         // wxWidgets versions where GetBackgroundColour() always returned
1235         // something -- so give them something even if it doesn't make sense
1236         // for this window (e.g. it has a themed background)
1237         if ( !colBg.Ok() )
1238             colBg = GetClassDefaultAttributes().colBg;
1239
1240         return colBg;
1241     }
1242     else
1243         return m_backgroundColour;
1244 }
1245
1246 wxColour wxWindowBase::GetForegroundColour() const
1247 {
1248     // logic is the same as above
1249     if ( !m_hasFgCol && !m_foregroundColour.Ok() )
1250     {
1251         wxColour colFg = GetDefaultAttributes().colFg;
1252
1253         if ( !colFg.IsOk() )
1254             colFg = GetClassDefaultAttributes().colFg;
1255
1256         return colFg;
1257     }
1258     else
1259         return m_foregroundColour;
1260 }
1261
1262 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
1263 {
1264     if ( colour == m_backgroundColour )
1265         return false;
1266
1267     m_hasBgCol = colour.IsOk();
1268     if ( m_backgroundStyle != wxBG_STYLE_CUSTOM )
1269         m_backgroundStyle = m_hasBgCol ? wxBG_STYLE_COLOUR : wxBG_STYLE_SYSTEM;
1270
1271     m_inheritBgCol = m_hasBgCol;
1272     m_backgroundColour = colour;
1273     SetThemeEnabled( !m_hasBgCol && !m_foregroundColour.Ok() );
1274     return true;
1275 }
1276
1277 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
1278 {
1279     if (colour == m_foregroundColour )
1280         return false;
1281
1282     m_hasFgCol = colour.IsOk();
1283     m_inheritFgCol = m_hasFgCol;
1284     m_foregroundColour = colour;
1285     SetThemeEnabled( !m_hasFgCol && !m_backgroundColour.Ok() );
1286     return true;
1287 }
1288
1289 bool wxWindowBase::SetCursor(const wxCursor& cursor)
1290 {
1291     // setting an invalid cursor is ok, it means that we don't have any special
1292     // cursor
1293     if ( m_cursor.IsSameAs(cursor) )
1294     {
1295         // no change
1296         return false;
1297     }
1298
1299     m_cursor = cursor;
1300
1301     return true;
1302 }
1303
1304 wxFont wxWindowBase::GetFont() const
1305 {
1306     // logic is the same as in GetBackgroundColour()
1307     if ( !m_font.IsOk() )
1308     {
1309         wxASSERT_MSG( !m_hasFont, _T("we have invalid explicit font?") );
1310
1311         wxFont font = GetDefaultAttributes().font;
1312         if ( !font.IsOk() )
1313             font = GetClassDefaultAttributes().font;
1314
1315         return font;
1316     }
1317     else
1318         return m_font;
1319 }
1320
1321 bool wxWindowBase::SetFont(const wxFont& font)
1322 {
1323     if ( font == m_font )
1324     {
1325         // no change
1326         return false;
1327     }
1328
1329     m_font = font;
1330     m_hasFont = font.IsOk();
1331     m_inheritFont = m_hasFont;
1332
1333     InvalidateBestSize();
1334
1335     return true;
1336 }
1337
1338 #if wxUSE_PALETTE
1339
1340 void wxWindowBase::SetPalette(const wxPalette& pal)
1341 {
1342     m_hasCustomPalette = true;
1343     m_palette = pal;
1344
1345     // VZ: can anyone explain me what do we do here?
1346     wxWindowDC d((wxWindow *) this);
1347     d.SetPalette(pal);
1348 }
1349
1350 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
1351 {
1352     wxWindow *win = (wxWindow *)this;
1353     while ( win && !win->HasCustomPalette() )
1354     {
1355         win = win->GetParent();
1356     }
1357
1358     return win;
1359 }
1360
1361 #endif // wxUSE_PALETTE
1362
1363 #if wxUSE_CARET
1364 void wxWindowBase::SetCaret(wxCaret *caret)
1365 {
1366     if ( m_caret )
1367     {
1368         delete m_caret;
1369     }
1370
1371     m_caret = caret;
1372
1373     if ( m_caret )
1374     {
1375         wxASSERT_MSG( m_caret->GetWindow() == this,
1376                       wxT("caret should be created associated to this window") );
1377     }
1378 }
1379 #endif // wxUSE_CARET
1380
1381 #if wxUSE_VALIDATORS
1382 // ----------------------------------------------------------------------------
1383 // validators
1384 // ----------------------------------------------------------------------------
1385
1386 void wxWindowBase::SetValidator(const wxValidator& validator)
1387 {
1388     if ( m_windowValidator )
1389         delete m_windowValidator;
1390
1391     m_windowValidator = (wxValidator *)validator.Clone();
1392
1393     if ( m_windowValidator )
1394         m_windowValidator->SetWindow(this);
1395 }
1396 #endif // wxUSE_VALIDATORS
1397
1398 // ----------------------------------------------------------------------------
1399 // update region stuff
1400 // ----------------------------------------------------------------------------
1401
1402 wxRect wxWindowBase::GetUpdateClientRect() const
1403 {
1404     wxRegion rgnUpdate = GetUpdateRegion();
1405     rgnUpdate.Intersect(GetClientRect());
1406     wxRect rectUpdate = rgnUpdate.GetBox();
1407     wxPoint ptOrigin = GetClientAreaOrigin();
1408     rectUpdate.x -= ptOrigin.x;
1409     rectUpdate.y -= ptOrigin.y;
1410
1411     return rectUpdate;
1412 }
1413
1414 bool wxWindowBase::DoIsExposed(int x, int y) const
1415 {
1416     return m_updateRegion.Contains(x, y) != wxOutRegion;
1417 }
1418
1419 bool wxWindowBase::DoIsExposed(int x, int y, int w, int h) const
1420 {
1421     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
1422 }
1423
1424 void wxWindowBase::ClearBackground()
1425 {
1426     // wxGTK uses its own version, no need to add never used code
1427 #ifndef __WXGTK__
1428     wxClientDC dc((wxWindow *)this);
1429     wxBrush brush(GetBackgroundColour(), wxBRUSHSTYLE_SOLID);
1430     dc.SetBackground(brush);
1431     dc.Clear();
1432 #endif // __WXGTK__
1433 }
1434
1435 // ----------------------------------------------------------------------------
1436 // find child window by id or name
1437 // ----------------------------------------------------------------------------
1438
1439 wxWindow *wxWindowBase::FindWindow(long id) const
1440 {
1441     if ( id == m_windowId )
1442         return (wxWindow *)this;
1443
1444     wxWindowBase *res = NULL;
1445     wxWindowList::compatibility_iterator node;
1446     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1447     {
1448         wxWindowBase *child = node->GetData();
1449         res = child->FindWindow( id );
1450     }
1451
1452     return (wxWindow *)res;
1453 }
1454
1455 wxWindow *wxWindowBase::FindWindow(const wxString& name) const
1456 {
1457     if ( name == m_windowName )
1458         return (wxWindow *)this;
1459
1460     wxWindowBase *res = NULL;
1461     wxWindowList::compatibility_iterator node;
1462     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1463     {
1464         wxWindow *child = node->GetData();
1465         res = child->FindWindow(name);
1466     }
1467
1468     return (wxWindow *)res;
1469 }
1470
1471
1472 // find any window by id or name or label: If parent is non-NULL, look through
1473 // children for a label or title matching the specified string. If NULL, look
1474 // through all top-level windows.
1475 //
1476 // to avoid duplicating code we reuse the same helper function but with
1477 // different comparators
1478
1479 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1480                                 const wxString& label, long id);
1481
1482 static
1483 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1484                            long WXUNUSED(id))
1485 {
1486     return win->GetLabel() == label;
1487 }
1488
1489 static
1490 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1491                           long WXUNUSED(id))
1492 {
1493     return win->GetName() == label;
1494 }
1495
1496 static
1497 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1498                         long id)
1499 {
1500     return win->GetId() == id;
1501 }
1502
1503 // recursive helper for the FindWindowByXXX() functions
1504 static
1505 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1506                                   const wxString& label,
1507                                   long id,
1508                                   wxFindWindowCmp cmp)
1509 {
1510     if ( parent )
1511     {
1512         // see if this is the one we're looking for
1513         if ( (*cmp)(parent, label, id) )
1514             return (wxWindow *)parent;
1515
1516         // It wasn't, so check all its children
1517         for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
1518               node;
1519               node = node->GetNext() )
1520         {
1521             // recursively check each child
1522             wxWindow *win = (wxWindow *)node->GetData();
1523             wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1524             if (retwin)
1525                 return retwin;
1526         }
1527     }
1528
1529     // Not found
1530     return NULL;
1531 }
1532
1533 // helper for FindWindowByXXX()
1534 static
1535 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1536                              const wxString& label,
1537                              long id,
1538                              wxFindWindowCmp cmp)
1539 {
1540     if ( parent )
1541     {
1542         // just check parent and all its children
1543         return wxFindWindowRecursively(parent, label, id, cmp);
1544     }
1545
1546     // start at very top of wx's windows
1547     for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1548           node;
1549           node = node->GetNext() )
1550     {
1551         // recursively check each window & its children
1552         wxWindow *win = node->GetData();
1553         wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1554         if (retwin)
1555             return retwin;
1556     }
1557
1558     return NULL;
1559 }
1560
1561 /* static */
1562 wxWindow *
1563 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1564 {
1565     return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1566 }
1567
1568 /* static */
1569 wxWindow *
1570 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1571 {
1572     wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1573
1574     if ( !win )
1575     {
1576         // fall back to the label
1577         win = FindWindowByLabel(title, parent);
1578     }
1579
1580     return win;
1581 }
1582
1583 /* static */
1584 wxWindow *
1585 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1586 {
1587     return wxFindWindowHelper(parent, wxEmptyString, id, wxFindWindowCmpIds);
1588 }
1589
1590 // ----------------------------------------------------------------------------
1591 // dialog oriented functions
1592 // ----------------------------------------------------------------------------
1593
1594 void wxWindowBase::MakeModal(bool modal)
1595 {
1596     // Disable all other windows
1597     if ( IsTopLevel() )
1598     {
1599         wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1600         while (node)
1601         {
1602             wxWindow *win = node->GetData();
1603             if (win != this)
1604                 win->Enable(!modal);
1605
1606             node = node->GetNext();
1607         }
1608     }
1609 }
1610
1611 bool wxWindowBase::Validate()
1612 {
1613 #if wxUSE_VALIDATORS
1614     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1615
1616     wxWindowList::compatibility_iterator node;
1617     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1618     {
1619         wxWindowBase *child = node->GetData();
1620         wxValidator *validator = child->GetValidator();
1621         if ( validator && !validator->Validate((wxWindow *)this) )
1622         {
1623             return false;
1624         }
1625
1626         if ( recurse && !child->Validate() )
1627         {
1628             return false;
1629         }
1630     }
1631 #endif // wxUSE_VALIDATORS
1632
1633     return true;
1634 }
1635
1636 bool wxWindowBase::TransferDataToWindow()
1637 {
1638 #if wxUSE_VALIDATORS
1639     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1640
1641     wxWindowList::compatibility_iterator node;
1642     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1643     {
1644         wxWindowBase *child = node->GetData();
1645         wxValidator *validator = child->GetValidator();
1646         if ( validator && !validator->TransferToWindow() )
1647         {
1648             wxLogWarning(_("Could not transfer data to window"));
1649 #if wxUSE_LOG
1650             wxLog::FlushActive();
1651 #endif // wxUSE_LOG
1652
1653             return false;
1654         }
1655
1656         if ( recurse )
1657         {
1658             if ( !child->TransferDataToWindow() )
1659             {
1660                 // warning already given
1661                 return false;
1662             }
1663         }
1664     }
1665 #endif // wxUSE_VALIDATORS
1666
1667     return true;
1668 }
1669
1670 bool wxWindowBase::TransferDataFromWindow()
1671 {
1672 #if wxUSE_VALIDATORS
1673     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1674
1675     wxWindowList::compatibility_iterator node;
1676     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1677     {
1678         wxWindow *child = node->GetData();
1679         wxValidator *validator = child->GetValidator();
1680         if ( validator && !validator->TransferFromWindow() )
1681         {
1682             // nop warning here because the application is supposed to give
1683             // one itself - we don't know here what might have gone wrongly
1684
1685             return false;
1686         }
1687
1688         if ( recurse )
1689         {
1690             if ( !child->TransferDataFromWindow() )
1691             {
1692                 // warning already given
1693                 return false;
1694             }
1695         }
1696     }
1697 #endif // wxUSE_VALIDATORS
1698
1699     return true;
1700 }
1701
1702 void wxWindowBase::InitDialog()
1703 {
1704     wxInitDialogEvent event(GetId());
1705     event.SetEventObject( this );
1706     GetEventHandler()->ProcessEvent(event);
1707 }
1708
1709 // ----------------------------------------------------------------------------
1710 // context-sensitive help support
1711 // ----------------------------------------------------------------------------
1712
1713 #if wxUSE_HELP
1714
1715 // associate this help text with this window
1716 void wxWindowBase::SetHelpText(const wxString& text)
1717 {
1718     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1719     if ( helpProvider )
1720     {
1721         helpProvider->AddHelp(this, text);
1722     }
1723 }
1724
1725 #if WXWIN_COMPATIBILITY_2_8
1726 // associate this help text with all windows with the same id as this
1727 // one
1728 void wxWindowBase::SetHelpTextForId(const wxString& text)
1729 {
1730     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1731     if ( helpProvider )
1732     {
1733         helpProvider->AddHelp(GetId(), text);
1734     }
1735 }
1736 #endif // WXWIN_COMPATIBILITY_2_8
1737
1738 // get the help string associated with this window (may be empty)
1739 // default implementation forwards calls to the help provider
1740 wxString
1741 wxWindowBase::GetHelpTextAtPoint(const wxPoint & WXUNUSED(pt),
1742                                  wxHelpEvent::Origin WXUNUSED(origin)) const
1743 {
1744     wxString text;
1745     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1746     if ( helpProvider )
1747     {
1748         text = helpProvider->GetHelp(this);
1749     }
1750
1751     return text;
1752 }
1753
1754 // show help for this window
1755 void wxWindowBase::OnHelp(wxHelpEvent& event)
1756 {
1757     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1758     if ( helpProvider )
1759     {
1760         wxPoint pos = event.GetPosition();
1761         const wxHelpEvent::Origin origin = event.GetOrigin();
1762         if ( origin == wxHelpEvent::Origin_Keyboard )
1763         {
1764             // if the help event was generated from keyboard it shouldn't
1765             // appear at the mouse position (which is still the only position
1766             // associated with help event) if the mouse is far away, although
1767             // we still do use the mouse position if it's over the window
1768             // because we suppose the user looks approximately at the mouse
1769             // already and so it would be more convenient than showing tooltip
1770             // at some arbitrary position which can be quite far from it
1771             const wxRect rectClient = GetClientRect();
1772             if ( !rectClient.Contains(ScreenToClient(pos)) )
1773             {
1774                 // position help slightly under and to the right of this window
1775                 pos = ClientToScreen(wxPoint(
1776                         2*GetCharWidth(),
1777                         rectClient.height + GetCharHeight()
1778                       ));
1779             }
1780         }
1781
1782         if ( helpProvider->ShowHelpAtPoint(this, pos, origin) )
1783         {
1784             // skip the event.Skip() below
1785             return;
1786         }
1787     }
1788
1789     event.Skip();
1790 }
1791
1792 #endif // wxUSE_HELP
1793
1794 // ----------------------------------------------------------------------------
1795 // tooltips
1796 // ----------------------------------------------------------------------------
1797
1798 #if wxUSE_TOOLTIPS
1799
1800 void wxWindowBase::SetToolTip( const wxString &tip )
1801 {
1802     // don't create the new tooltip if we already have one
1803     if ( m_tooltip )
1804     {
1805         m_tooltip->SetTip( tip );
1806     }
1807     else
1808     {
1809         SetToolTip( new wxToolTip( tip ) );
1810     }
1811
1812     // setting empty tooltip text does not remove the tooltip any more - use
1813     // SetToolTip(NULL) for this
1814 }
1815
1816 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1817 {
1818     if ( m_tooltip != tooltip )
1819     {
1820         if ( m_tooltip )
1821             delete m_tooltip;
1822
1823         m_tooltip = tooltip;
1824     }
1825 }
1826
1827 #endif // wxUSE_TOOLTIPS
1828
1829 // ----------------------------------------------------------------------------
1830 // constraints and sizers
1831 // ----------------------------------------------------------------------------
1832
1833 #if wxUSE_CONSTRAINTS
1834
1835 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1836 {
1837     if ( m_constraints )
1838     {
1839         UnsetConstraints(m_constraints);
1840         delete m_constraints;
1841     }
1842     m_constraints = constraints;
1843     if ( m_constraints )
1844     {
1845         // Make sure other windows know they're part of a 'meaningful relationship'
1846         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1847             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1848         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1849             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1850         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1851             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1852         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1853             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1854         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1855             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1856         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1857             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1858         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1859             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1860         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1861             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1862     }
1863 }
1864
1865 // This removes any dangling pointers to this window in other windows'
1866 // constraintsInvolvedIn lists.
1867 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1868 {
1869     if ( c )
1870     {
1871         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1872             c->left.GetOtherWindow()->RemoveConstraintReference(this);
1873         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1874             c->top.GetOtherWindow()->RemoveConstraintReference(this);
1875         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1876             c->right.GetOtherWindow()->RemoveConstraintReference(this);
1877         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1878             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1879         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1880             c->width.GetOtherWindow()->RemoveConstraintReference(this);
1881         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1882             c->height.GetOtherWindow()->RemoveConstraintReference(this);
1883         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1884             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
1885         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
1886             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
1887     }
1888 }
1889
1890 // Back-pointer to other windows we're involved with, so if we delete this
1891 // window, we must delete any constraints we're involved with.
1892 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
1893 {
1894     if ( !m_constraintsInvolvedIn )
1895         m_constraintsInvolvedIn = new wxWindowList;
1896     if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
1897         m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
1898 }
1899
1900 // REMOVE back-pointer to other windows we're involved with.
1901 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
1902 {
1903     if ( m_constraintsInvolvedIn )
1904         m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
1905 }
1906
1907 // Reset any constraints that mention this window
1908 void wxWindowBase::DeleteRelatedConstraints()
1909 {
1910     if ( m_constraintsInvolvedIn )
1911     {
1912         wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
1913         while (node)
1914         {
1915             wxWindow *win = node->GetData();
1916             wxLayoutConstraints *constr = win->GetConstraints();
1917
1918             // Reset any constraints involving this window
1919             if ( constr )
1920             {
1921                 constr->left.ResetIfWin(this);
1922                 constr->top.ResetIfWin(this);
1923                 constr->right.ResetIfWin(this);
1924                 constr->bottom.ResetIfWin(this);
1925                 constr->width.ResetIfWin(this);
1926                 constr->height.ResetIfWin(this);
1927                 constr->centreX.ResetIfWin(this);
1928                 constr->centreY.ResetIfWin(this);
1929             }
1930
1931             wxWindowList::compatibility_iterator next = node->GetNext();
1932             m_constraintsInvolvedIn->Erase(node);
1933             node = next;
1934         }
1935
1936         delete m_constraintsInvolvedIn;
1937         m_constraintsInvolvedIn = NULL;
1938     }
1939 }
1940
1941 #endif // wxUSE_CONSTRAINTS
1942
1943 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
1944 {
1945     if ( sizer == m_windowSizer)
1946         return;
1947
1948     if ( m_windowSizer )
1949     {
1950         m_windowSizer->SetContainingWindow(NULL);
1951
1952         if ( deleteOld )
1953             delete m_windowSizer;
1954     }
1955
1956     m_windowSizer = sizer;
1957     if ( m_windowSizer )
1958     {
1959         m_windowSizer->SetContainingWindow((wxWindow *)this);
1960     }
1961
1962     SetAutoLayout(m_windowSizer != NULL);
1963 }
1964
1965 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
1966 {
1967     SetSizer( sizer, deleteOld );
1968     sizer->SetSizeHints( (wxWindow*) this );
1969 }
1970
1971
1972 void wxWindowBase::SetContainingSizer(wxSizer* sizer)
1973 {
1974     // adding a window to a sizer twice is going to result in fatal and
1975     // hard to debug problems later because when deleting the second
1976     // associated wxSizerItem we're going to dereference a dangling
1977     // pointer; so try to detect this as early as possible
1978     wxASSERT_MSG( !sizer || m_containingSizer != sizer,
1979                   _T("Adding a window to the same sizer twice?") );
1980
1981     m_containingSizer = sizer;
1982 }
1983
1984 #if wxUSE_CONSTRAINTS
1985
1986 void wxWindowBase::SatisfyConstraints()
1987 {
1988     wxLayoutConstraints *constr = GetConstraints();
1989     bool wasOk = constr && constr->AreSatisfied();
1990
1991     ResetConstraints();   // Mark all constraints as unevaluated
1992
1993     int noChanges = 1;
1994
1995     // if we're a top level panel (i.e. our parent is frame/dialog), our
1996     // own constraints will never be satisfied any more unless we do it
1997     // here
1998     if ( wasOk )
1999     {
2000         while ( noChanges > 0 )
2001         {
2002             LayoutPhase1(&noChanges);
2003         }
2004     }
2005
2006     LayoutPhase2(&noChanges);
2007 }
2008
2009 #endif // wxUSE_CONSTRAINTS
2010
2011 bool wxWindowBase::Layout()
2012 {
2013     // If there is a sizer, use it instead of the constraints
2014     if ( GetSizer() )
2015     {
2016         int w = 0, h = 0;
2017         GetVirtualSize(&w, &h);
2018         GetSizer()->SetDimension( 0, 0, w, h );
2019     }
2020 #if wxUSE_CONSTRAINTS
2021     else
2022     {
2023         SatisfyConstraints(); // Find the right constraints values
2024         SetConstraintSizes(); // Recursively set the real window sizes
2025     }
2026 #endif
2027
2028     return true;
2029 }
2030
2031 #if wxUSE_CONSTRAINTS
2032
2033 // first phase of the constraints evaluation: set our own constraints
2034 bool wxWindowBase::LayoutPhase1(int *noChanges)
2035 {
2036     wxLayoutConstraints *constr = GetConstraints();
2037
2038     return !constr || constr->SatisfyConstraints(this, noChanges);
2039 }
2040
2041 // second phase: set the constraints for our children
2042 bool wxWindowBase::LayoutPhase2(int *noChanges)
2043 {
2044     *noChanges = 0;
2045
2046     // Layout children
2047     DoPhase(1);
2048
2049     // Layout grand children
2050     DoPhase(2);
2051
2052     return true;
2053 }
2054
2055 // Do a phase of evaluating child constraints
2056 bool wxWindowBase::DoPhase(int phase)
2057 {
2058     // the list containing the children for which the constraints are already
2059     // set correctly
2060     wxWindowList succeeded;
2061
2062     // the max number of iterations we loop before concluding that we can't set
2063     // the constraints
2064     static const int maxIterations = 500;
2065
2066     for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
2067     {
2068         int noChanges = 0;
2069
2070         // loop over all children setting their constraints
2071         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2072               node;
2073               node = node->GetNext() )
2074         {
2075             wxWindow *child = node->GetData();
2076             if ( child->IsTopLevel() )
2077             {
2078                 // top level children are not inside our client area
2079                 continue;
2080             }
2081
2082             if ( !child->GetConstraints() || succeeded.Find(child) )
2083             {
2084                 // this one is either already ok or nothing we can do about it
2085                 continue;
2086             }
2087
2088             int tempNoChanges = 0;
2089             bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
2090                                       : child->LayoutPhase2(&tempNoChanges);
2091             noChanges += tempNoChanges;
2092
2093             if ( success )
2094             {
2095                 succeeded.Append(child);
2096             }
2097         }
2098
2099         if ( !noChanges )
2100         {
2101             // constraints are set
2102             break;
2103         }
2104     }
2105
2106     return true;
2107 }
2108
2109 void wxWindowBase::ResetConstraints()
2110 {
2111     wxLayoutConstraints *constr = GetConstraints();
2112     if ( constr )
2113     {
2114         constr->left.SetDone(false);
2115         constr->top.SetDone(false);
2116         constr->right.SetDone(false);
2117         constr->bottom.SetDone(false);
2118         constr->width.SetDone(false);
2119         constr->height.SetDone(false);
2120         constr->centreX.SetDone(false);
2121         constr->centreY.SetDone(false);
2122     }
2123
2124     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2125     while (node)
2126     {
2127         wxWindow *win = node->GetData();
2128         if ( !win->IsTopLevel() )
2129             win->ResetConstraints();
2130         node = node->GetNext();
2131     }
2132 }
2133
2134 // Need to distinguish between setting the 'fake' size for windows and sizers,
2135 // and setting the real values.
2136 void wxWindowBase::SetConstraintSizes(bool recurse)
2137 {
2138     wxLayoutConstraints *constr = GetConstraints();
2139     if ( constr && constr->AreSatisfied() )
2140     {
2141         int x = constr->left.GetValue();
2142         int y = constr->top.GetValue();
2143         int w = constr->width.GetValue();
2144         int h = constr->height.GetValue();
2145
2146         if ( (constr->width.GetRelationship() != wxAsIs ) ||
2147              (constr->height.GetRelationship() != wxAsIs) )
2148         {
2149             SetSize(x, y, w, h);
2150         }
2151         else
2152         {
2153             // If we don't want to resize this window, just move it...
2154             Move(x, y);
2155         }
2156     }
2157     else if ( constr )
2158     {
2159         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
2160                    GetClassInfo()->GetClassName(),
2161                    GetName().c_str());
2162     }
2163
2164     if ( recurse )
2165     {
2166         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2167         while (node)
2168         {
2169             wxWindow *win = node->GetData();
2170             if ( !win->IsTopLevel() && win->GetConstraints() )
2171                 win->SetConstraintSizes();
2172             node = node->GetNext();
2173         }
2174     }
2175 }
2176
2177 // Only set the size/position of the constraint (if any)
2178 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
2179 {
2180     wxLayoutConstraints *constr = GetConstraints();
2181     if ( constr )
2182     {
2183         if ( x != wxDefaultCoord )
2184         {
2185             constr->left.SetValue(x);
2186             constr->left.SetDone(true);
2187         }
2188         if ( y != wxDefaultCoord )
2189         {
2190             constr->top.SetValue(y);
2191             constr->top.SetDone(true);
2192         }
2193         if ( w != wxDefaultCoord )
2194         {
2195             constr->width.SetValue(w);
2196             constr->width.SetDone(true);
2197         }
2198         if ( h != wxDefaultCoord )
2199         {
2200             constr->height.SetValue(h);
2201             constr->height.SetDone(true);
2202         }
2203     }
2204 }
2205
2206 void wxWindowBase::MoveConstraint(int x, int y)
2207 {
2208     wxLayoutConstraints *constr = GetConstraints();
2209     if ( constr )
2210     {
2211         if ( x != wxDefaultCoord )
2212         {
2213             constr->left.SetValue(x);
2214             constr->left.SetDone(true);
2215         }
2216         if ( y != wxDefaultCoord )
2217         {
2218             constr->top.SetValue(y);
2219             constr->top.SetDone(true);
2220         }
2221     }
2222 }
2223
2224 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
2225 {
2226     wxLayoutConstraints *constr = GetConstraints();
2227     if ( constr )
2228     {
2229         *w = constr->width.GetValue();
2230         *h = constr->height.GetValue();
2231     }
2232     else
2233         GetSize(w, h);
2234 }
2235
2236 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
2237 {
2238     wxLayoutConstraints *constr = GetConstraints();
2239     if ( constr )
2240     {
2241         *w = constr->width.GetValue();
2242         *h = constr->height.GetValue();
2243     }
2244     else
2245         GetClientSize(w, h);
2246 }
2247
2248 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
2249 {
2250     wxLayoutConstraints *constr = GetConstraints();
2251     if ( constr )
2252     {
2253         *x = constr->left.GetValue();
2254         *y = constr->top.GetValue();
2255     }
2256     else
2257         GetPosition(x, y);
2258 }
2259
2260 #endif // wxUSE_CONSTRAINTS
2261
2262 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
2263 {
2264     // don't do it for the dialogs/frames - they float independently of their
2265     // parent
2266     if ( !IsTopLevel() )
2267     {
2268         wxWindow *parent = GetParent();
2269         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
2270         {
2271             wxPoint pt(parent->GetClientAreaOrigin());
2272             x += pt.x;
2273             y += pt.y;
2274         }
2275     }
2276 }
2277
2278 // ----------------------------------------------------------------------------
2279 // Update UI processing
2280 // ----------------------------------------------------------------------------
2281
2282 void wxWindowBase::UpdateWindowUI(long flags)
2283 {
2284     wxUpdateUIEvent event(GetId());
2285     event.SetEventObject(this);
2286
2287     if ( GetEventHandler()->ProcessEvent(event) )
2288     {
2289         DoUpdateWindowUI(event);
2290     }
2291
2292     if (flags & wxUPDATE_UI_RECURSE)
2293     {
2294         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2295         while (node)
2296         {
2297             wxWindow* child = (wxWindow*) node->GetData();
2298             child->UpdateWindowUI(flags);
2299             node = node->GetNext();
2300         }
2301     }
2302 }
2303
2304 // do the window-specific processing after processing the update event
2305 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
2306 {
2307     if ( event.GetSetEnabled() )
2308         Enable(event.GetEnabled());
2309
2310     if ( event.GetSetShown() )
2311         Show(event.GetShown());
2312 }
2313
2314 // ----------------------------------------------------------------------------
2315 // dialog units translations
2316 // ----------------------------------------------------------------------------
2317
2318 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
2319 {
2320     int charWidth = GetCharWidth();
2321     int charHeight = GetCharHeight();
2322     wxPoint pt2 = wxDefaultPosition;
2323     if (pt.x != wxDefaultCoord)
2324         pt2.x = (int) ((pt.x * 4) / charWidth);
2325     if (pt.y != wxDefaultCoord)
2326         pt2.y = (int) ((pt.y * 8) / charHeight);
2327
2328     return pt2;
2329 }
2330
2331 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
2332 {
2333     int charWidth = GetCharWidth();
2334     int charHeight = GetCharHeight();
2335     wxPoint pt2 = wxDefaultPosition;
2336     if (pt.x != wxDefaultCoord)
2337         pt2.x = (int) ((pt.x * charWidth) / 4);
2338     if (pt.y != wxDefaultCoord)
2339         pt2.y = (int) ((pt.y * charHeight) / 8);
2340
2341     return pt2;
2342 }
2343
2344 // ----------------------------------------------------------------------------
2345 // event handlers
2346 // ----------------------------------------------------------------------------
2347
2348 // propagate the colour change event to the subwindows
2349 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
2350 {
2351     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2352     while ( node )
2353     {
2354         // Only propagate to non-top-level windows
2355         wxWindow *win = node->GetData();
2356         if ( !win->IsTopLevel() )
2357         {
2358             wxSysColourChangedEvent event2;
2359             event.SetEventObject(win);
2360             win->GetEventHandler()->ProcessEvent(event2);
2361         }
2362
2363         node = node->GetNext();
2364     }
2365
2366     Refresh();
2367 }
2368
2369 // the default action is to populate dialog with data when it's created,
2370 // and nudge the UI into displaying itself correctly in case
2371 // we've turned the wxUpdateUIEvents frequency down low.
2372 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
2373 {
2374     TransferDataToWindow();
2375
2376     // Update the UI at this point
2377     UpdateWindowUI(wxUPDATE_UI_RECURSE);
2378 }
2379
2380 // ----------------------------------------------------------------------------
2381 // menu-related functions
2382 // ----------------------------------------------------------------------------
2383
2384 #if wxUSE_MENUS
2385
2386 bool wxWindowBase::PopupMenu(wxMenu *menu, int x, int y)
2387 {
2388     wxCHECK_MSG( menu, false, "can't popup NULL menu" );
2389
2390     wxCurrentPopupMenu = menu;
2391     const bool rc = DoPopupMenu(menu, x, y);
2392     wxCurrentPopupMenu = NULL;
2393
2394     return rc;
2395 }
2396
2397 // this is used to pass the id of the selected item from the menu event handler
2398 // to the main function itself
2399 //
2400 // it's ok to use a global here as there can be at most one popup menu shown at
2401 // any time
2402 static int gs_popupMenuSelection = wxID_NONE;
2403
2404 void wxWindowBase::InternalOnPopupMenu(wxCommandEvent& event)
2405 {
2406     // store the id in a global variable where we'll retrieve it from later
2407     gs_popupMenuSelection = event.GetId();
2408 }
2409
2410 void wxWindowBase::InternalOnPopupMenuUpdate(wxUpdateUIEvent& WXUNUSED(event))
2411 {
2412     // nothing to do but do not skip it
2413 }
2414
2415 int
2416 wxWindowBase::DoGetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y)
2417 {
2418     gs_popupMenuSelection = wxID_NONE;
2419
2420     Connect(wxEVT_COMMAND_MENU_SELECTED,
2421             wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2422             NULL,
2423             this);
2424
2425     // it is common to construct the menu passed to this function dynamically
2426     // using some fixed range of ids which could clash with the ids used
2427     // elsewhere in the program, which could result in some menu items being
2428     // unintentionally disabled or otherwise modified by update UI handlers
2429     // elsewhere in the program code and this is difficult to avoid in the
2430     // program itself, so instead we just temporarily suspend UI updating while
2431     // this menu is shown
2432     Connect(wxEVT_UPDATE_UI,
2433             wxUpdateUIEventHandler(wxWindowBase::InternalOnPopupMenuUpdate),
2434             NULL,
2435             this);
2436
2437     PopupMenu(&menu, x, y);
2438
2439     Disconnect(wxEVT_UPDATE_UI,
2440                wxUpdateUIEventHandler(wxWindowBase::InternalOnPopupMenuUpdate),
2441                NULL,
2442                this);
2443     Disconnect(wxEVT_COMMAND_MENU_SELECTED,
2444                wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2445                NULL,
2446                this);
2447
2448     return gs_popupMenuSelection;
2449 }
2450
2451 #endif // wxUSE_MENUS
2452
2453 // methods for drawing the sizers in a visible way
2454 #ifdef __WXDEBUG__
2455
2456 static void DrawSizers(wxWindowBase *win);
2457
2458 static void DrawBorder(wxWindowBase *win, const wxRect& rect, bool fill = false)
2459 {
2460     wxClientDC dc((wxWindow *)win);
2461     dc.SetPen(*wxRED_PEN);
2462     dc.SetBrush(fill ? wxBrush(*wxRED, wxBRUSHSTYLE_CROSSDIAG_HATCH) : *wxTRANSPARENT_BRUSH);
2463     dc.DrawRectangle(rect.Deflate(1, 1));
2464 }
2465
2466 static void DrawSizer(wxWindowBase *win, wxSizer *sizer)
2467 {
2468     const wxSizerItemList& items = sizer->GetChildren();
2469     for ( wxSizerItemList::const_iterator i = items.begin(),
2470                                         end = items.end();
2471           i != end;
2472           ++i )
2473     {
2474         wxSizerItem *item = *i;
2475         if ( item->IsSizer() )
2476         {
2477             DrawBorder(win, item->GetRect().Deflate(2));
2478             DrawSizer(win, item->GetSizer());
2479         }
2480         else if ( item->IsSpacer() )
2481         {
2482             DrawBorder(win, item->GetRect().Deflate(2), true);
2483         }
2484         else if ( item->IsWindow() )
2485         {
2486             DrawSizers(item->GetWindow());
2487         }
2488     }
2489 }
2490
2491 static void DrawSizers(wxWindowBase *win)
2492 {
2493     wxSizer *sizer = win->GetSizer();
2494     if ( sizer )
2495     {
2496         DrawBorder(win, win->GetClientSize());
2497         DrawSizer(win, sizer);
2498     }
2499     else // no sizer, still recurse into the children
2500     {
2501         const wxWindowList& children = win->GetChildren();
2502         for ( wxWindowList::const_iterator i = children.begin(),
2503                                          end = children.end();
2504               i != end;
2505               ++i )
2506         {
2507             DrawSizers(*i);
2508         }
2509     }
2510 }
2511
2512 #endif // __WXDEBUG__
2513
2514 // process special middle clicks
2515 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
2516 {
2517     if ( event.ControlDown() && event.AltDown() )
2518     {
2519 #ifdef __WXDEBUG__
2520         // Ctrl-Alt-Shift-mclick makes the sizers visible in debug builds
2521         if ( event.ShiftDown() )
2522         {
2523             DrawSizers(this);
2524             return;
2525         }
2526 #endif // __WXDEBUG__
2527         ::wxInfoMessageBox((wxWindow*)this);
2528     }
2529     else
2530     {
2531         event.Skip();
2532     }
2533 }
2534
2535 // ----------------------------------------------------------------------------
2536 // accessibility
2537 // ----------------------------------------------------------------------------
2538
2539 #if wxUSE_ACCESSIBILITY
2540 void wxWindowBase::SetAccessible(wxAccessible* accessible)
2541 {
2542     if (m_accessible && (accessible != m_accessible))
2543         delete m_accessible;
2544     m_accessible = accessible;
2545     if (m_accessible)
2546         m_accessible->SetWindow((wxWindow*) this);
2547 }
2548
2549 // Returns the accessible object, creating if necessary.
2550 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2551 {
2552     if (!m_accessible)
2553         m_accessible = CreateAccessible();
2554     return m_accessible;
2555 }
2556
2557 // Override to create a specific accessible object.
2558 wxAccessible* wxWindowBase::CreateAccessible()
2559 {
2560     return new wxWindowAccessible((wxWindow*) this);
2561 }
2562
2563 #endif
2564
2565 // ----------------------------------------------------------------------------
2566 // list classes implementation
2567 // ----------------------------------------------------------------------------
2568
2569 #if wxUSE_STL
2570
2571 #include "wx/listimpl.cpp"
2572 WX_DEFINE_LIST(wxWindowList)
2573
2574 #else // !wxUSE_STL
2575
2576 void wxWindowListNode::DeleteData()
2577 {
2578     delete (wxWindow *)GetData();
2579 }
2580
2581 #endif // wxUSE_STL/!wxUSE_STL
2582
2583 // ----------------------------------------------------------------------------
2584 // borders
2585 // ----------------------------------------------------------------------------
2586
2587 wxBorder wxWindowBase::GetBorder(long flags) const
2588 {
2589     wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2590     if ( border == wxBORDER_DEFAULT )
2591     {
2592         border = GetDefaultBorder();
2593     }
2594     else if ( border == wxBORDER_THEME )
2595     {
2596         border = GetDefaultBorderForControl();
2597     }
2598
2599     return border;
2600 }
2601
2602 wxBorder wxWindowBase::GetDefaultBorder() const
2603 {
2604     return wxBORDER_NONE;
2605 }
2606
2607 // ----------------------------------------------------------------------------
2608 // hit testing
2609 // ----------------------------------------------------------------------------
2610
2611 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2612 {
2613     // here we just check if the point is inside the window or not
2614
2615     // check the top and left border first
2616     bool outside = x < 0 || y < 0;
2617     if ( !outside )
2618     {
2619         // check the right and bottom borders too
2620         wxSize size = GetSize();
2621         outside = x >= size.x || y >= size.y;
2622     }
2623
2624     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2625 }
2626
2627 // ----------------------------------------------------------------------------
2628 // mouse capture
2629 // ----------------------------------------------------------------------------
2630
2631 struct WXDLLEXPORT wxWindowNext
2632 {
2633     wxWindow *win;
2634     wxWindowNext *next;
2635 } *wxWindowBase::ms_winCaptureNext = NULL;
2636 wxWindow *wxWindowBase::ms_winCaptureCurrent = NULL;
2637 bool wxWindowBase::ms_winCaptureChanging = false;
2638
2639 void wxWindowBase::CaptureMouse()
2640 {
2641     wxLogTrace(_T("mousecapture"), _T("CaptureMouse(%p)"), static_cast<void*>(this));
2642
2643     wxASSERT_MSG( !ms_winCaptureChanging, _T("recursive CaptureMouse call?") );
2644
2645     ms_winCaptureChanging = true;
2646
2647     wxWindow *winOld = GetCapture();
2648     if ( winOld )
2649     {
2650         ((wxWindowBase*) winOld)->DoReleaseMouse();
2651
2652         // save it on stack
2653         wxWindowNext *item = new wxWindowNext;
2654         item->win = winOld;
2655         item->next = ms_winCaptureNext;
2656         ms_winCaptureNext = item;
2657     }
2658     //else: no mouse capture to save
2659
2660     DoCaptureMouse();
2661     ms_winCaptureCurrent = (wxWindow*)this;
2662
2663     ms_winCaptureChanging = false;
2664 }
2665
2666 void wxWindowBase::ReleaseMouse()
2667 {
2668     wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(%p)"), static_cast<void*>(this));
2669
2670     wxASSERT_MSG( !ms_winCaptureChanging, _T("recursive ReleaseMouse call?") );
2671
2672     wxASSERT_MSG( GetCapture() == this,
2673                   "attempt to release mouse, but this window hasn't captured it" );
2674     wxASSERT_MSG( ms_winCaptureCurrent == this,
2675                   "attempt to release mouse, but this window hasn't captured it" );
2676
2677     ms_winCaptureChanging = true;
2678
2679     DoReleaseMouse();
2680     ms_winCaptureCurrent = NULL;
2681
2682     if ( ms_winCaptureNext )
2683     {
2684         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2685         ms_winCaptureCurrent = ms_winCaptureNext->win;
2686
2687         wxWindowNext *item = ms_winCaptureNext;
2688         ms_winCaptureNext = item->next;
2689         delete item;
2690     }
2691     //else: stack is empty, no previous capture
2692
2693     ms_winCaptureChanging = false;
2694
2695     wxLogTrace(_T("mousecapture"),
2696         (const wxChar *) _T("After ReleaseMouse() mouse is captured by %p"),
2697         static_cast<void*>(GetCapture()));
2698 }
2699
2700 static void DoNotifyWindowAboutCaptureLost(wxWindow *win)
2701 {
2702     wxMouseCaptureLostEvent event(win->GetId());
2703     event.SetEventObject(win);
2704     if ( !win->GetEventHandler()->ProcessEvent(event) )
2705     {
2706         // windows must handle this event, otherwise the app wouldn't behave
2707         // correctly if it loses capture unexpectedly; see the discussion here:
2708         // http://sourceforge.net/tracker/index.php?func=detail&aid=1153662&group_id=9863&atid=109863
2709         // http://article.gmane.org/gmane.comp.lib.wxwidgets.devel/82376
2710         wxFAIL_MSG( _T("window that captured the mouse didn't process wxEVT_MOUSE_CAPTURE_LOST") );
2711     }
2712 }
2713
2714 /* static */
2715 void wxWindowBase::NotifyCaptureLost()
2716 {
2717     // don't do anything if capture lost was expected, i.e. resulted from
2718     // a wx call to ReleaseMouse or CaptureMouse:
2719     if ( ms_winCaptureChanging )
2720         return;
2721
2722     // if the capture was lost unexpectedly, notify every window that has
2723     // capture (on stack or current) about it and clear the stack:
2724
2725     if ( ms_winCaptureCurrent )
2726     {
2727         DoNotifyWindowAboutCaptureLost(ms_winCaptureCurrent);
2728         ms_winCaptureCurrent = NULL;
2729     }
2730
2731     while ( ms_winCaptureNext )
2732     {
2733         wxWindowNext *item = ms_winCaptureNext;
2734         ms_winCaptureNext = item->next;
2735
2736         DoNotifyWindowAboutCaptureLost(item->win);
2737
2738         delete item;
2739     }
2740 }
2741
2742 #if wxUSE_HOTKEY
2743
2744 bool
2745 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2746                              int WXUNUSED(modifiers),
2747                              int WXUNUSED(keycode))
2748 {
2749     // not implemented
2750     return false;
2751 }
2752
2753 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2754 {
2755     // not implemented
2756     return false;
2757 }
2758
2759 #endif // wxUSE_HOTKEY
2760
2761 // ----------------------------------------------------------------------------
2762 // event processing
2763 // ----------------------------------------------------------------------------
2764
2765 bool wxWindowBase::TryValidator(wxEvent& wxVALIDATOR_PARAM(event))
2766 {
2767 #if wxUSE_VALIDATORS
2768     // Can only use the validator of the window which
2769     // is receiving the event
2770     if ( event.GetEventObject() == this )
2771     {
2772         wxValidator * const validator = GetValidator();
2773         if ( validator && validator->ProcessEventHere(event) )
2774         {
2775             return true;
2776         }
2777     }
2778 #endif // wxUSE_VALIDATORS
2779
2780     return false;
2781 }
2782
2783 bool wxWindowBase::TryParent(wxEvent& event)
2784 {
2785     // carry on up the parent-child hierarchy if the propagation count hasn't
2786     // reached zero yet
2787     if ( event.ShouldPropagate() )
2788     {
2789         // honour the requests to stop propagation at this window: this is
2790         // used by the dialogs, for example, to prevent processing the events
2791         // from the dialog controls in the parent frame which rarely, if ever,
2792         // makes sense
2793         if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
2794         {
2795             wxWindow *parent = GetParent();
2796             if ( parent && !parent->IsBeingDeleted() )
2797             {
2798                 wxPropagateOnce propagateOnce(event);
2799
2800                 return parent->GetEventHandler()->ProcessEvent(event);
2801             }
2802         }
2803     }
2804
2805     return wxEvtHandler::TryParent(event);
2806 }
2807
2808 // ----------------------------------------------------------------------------
2809 // window relationships
2810 // ----------------------------------------------------------------------------
2811
2812 wxWindow *wxWindowBase::DoGetSibling(WindowOrder order) const
2813 {
2814     wxCHECK_MSG( GetParent(), NULL,
2815                     _T("GetPrev/NextSibling() don't work for TLWs!") );
2816
2817     wxWindowList& siblings = GetParent()->GetChildren();
2818     wxWindowList::compatibility_iterator i = siblings.Find((wxWindow *)this);
2819     wxCHECK_MSG( i, NULL, _T("window not a child of its parent?") );
2820
2821     if ( order == OrderBefore )
2822         i = i->GetPrevious();
2823     else // OrderAfter
2824         i = i->GetNext();
2825
2826     return i ? i->GetData() : NULL;
2827 }
2828
2829 // ----------------------------------------------------------------------------
2830 // keyboard navigation
2831 // ----------------------------------------------------------------------------
2832
2833 // Navigates in the specified direction inside this window
2834 bool wxWindowBase::DoNavigateIn(int flags)
2835 {
2836 #ifdef wxHAS_NATIVE_TAB_TRAVERSAL
2837     // native code doesn't process our wxNavigationKeyEvents anyhow
2838     wxUnusedVar(flags);
2839     return false;
2840 #else // !wxHAS_NATIVE_TAB_TRAVERSAL
2841     wxNavigationKeyEvent eventNav;
2842     wxWindow *focused = FindFocus();
2843     eventNav.SetCurrentFocus(focused);
2844     eventNav.SetEventObject(focused);
2845     eventNav.SetFlags(flags);
2846     return GetEventHandler()->ProcessEvent(eventNav);
2847 #endif // wxHAS_NATIVE_TAB_TRAVERSAL/!wxHAS_NATIVE_TAB_TRAVERSAL
2848 }
2849
2850 bool wxWindowBase::HandleAsNavigationKey(const wxKeyEvent& event)
2851 {
2852     if ( event.GetKeyCode() != WXK_TAB )
2853         return false;
2854
2855     int flags = wxNavigationKeyEvent::FromTab;
2856
2857     if ( event.ShiftDown() )
2858         flags |= wxNavigationKeyEvent::IsBackward;
2859     else
2860         flags |= wxNavigationKeyEvent::IsForward;
2861
2862     if ( event.ControlDown() )
2863         flags |= wxNavigationKeyEvent::WinChange;
2864
2865     Navigate(flags);
2866     return true;
2867 }
2868
2869 void wxWindowBase::DoMoveInTabOrder(wxWindow *win, WindowOrder move)
2870 {
2871     // check that we're not a top level window
2872     wxCHECK_RET( GetParent(),
2873                     _T("MoveBefore/AfterInTabOrder() don't work for TLWs!") );
2874
2875     // detect the special case when we have nothing to do anyhow and when the
2876     // code below wouldn't work
2877     if ( win == this )
2878         return;
2879
2880     // find the target window in the siblings list
2881     wxWindowList& siblings = GetParent()->GetChildren();
2882     wxWindowList::compatibility_iterator i = siblings.Find(win);
2883     wxCHECK_RET( i, _T("MoveBefore/AfterInTabOrder(): win is not a sibling") );
2884
2885     // unfortunately, when wxUSE_STL == 1 DetachNode() is not implemented so we
2886     // can't just move the node around
2887     wxWindow *self = (wxWindow *)this;
2888     siblings.DeleteObject(self);
2889     if ( move == OrderAfter )
2890     {
2891         i = i->GetNext();
2892     }
2893
2894     if ( i )
2895     {
2896         siblings.Insert(i, self);
2897     }
2898     else // OrderAfter and win was the last sibling
2899     {
2900         siblings.Append(self);
2901     }
2902 }
2903
2904 // ----------------------------------------------------------------------------
2905 // focus handling
2906 // ----------------------------------------------------------------------------
2907
2908 /*static*/ wxWindow* wxWindowBase::FindFocus()
2909 {
2910     wxWindowBase *win = DoFindFocus();
2911     return win ? win->GetMainWindowOfCompositeControl() : NULL;
2912 }
2913
2914 bool wxWindowBase::HasFocus() const
2915 {
2916     wxWindowBase *win = DoFindFocus();
2917     return win == this ||
2918            win == wxConstCast(this, wxWindowBase)->GetMainWindowOfCompositeControl();
2919 }
2920
2921 // ----------------------------------------------------------------------------
2922 // drag and drop
2923 // ----------------------------------------------------------------------------
2924
2925 #if wxUSE_DRAG_AND_DROP && !defined(__WXMSW__)
2926
2927 namespace
2928 {
2929
2930 class DragAcceptFilesTarget : public wxFileDropTarget
2931 {
2932 public:
2933     DragAcceptFilesTarget(wxWindowBase *win) : m_win(win) {}
2934
2935     virtual bool OnDropFiles(wxCoord x, wxCoord y,
2936                              const wxArrayString& filenames)
2937     {
2938         wxDropFilesEvent event(wxEVT_DROP_FILES,
2939                                filenames.size(),
2940                                wxCArrayString(filenames).Release());
2941         event.SetEventObject(m_win);
2942         event.m_pos.x = x;
2943         event.m_pos.y = y;
2944
2945         return m_win->HandleWindowEvent(event);
2946     }
2947
2948 private:
2949     wxWindowBase * const m_win;
2950
2951     DECLARE_NO_COPY_CLASS(DragAcceptFilesTarget)
2952 };
2953
2954
2955 } // anonymous namespace
2956
2957 // Generic version of DragAcceptFiles(). It works by installing a simple
2958 // wxFileDropTarget-to-EVT_DROP_FILES adaptor and therefore cannot be used
2959 // together with explicit SetDropTarget() calls.
2960 void wxWindowBase::DragAcceptFiles(bool accept)
2961 {
2962     if ( accept )
2963     {
2964         wxASSERT_MSG( !GetDropTarget(),
2965                       "cannot use DragAcceptFiles() and SetDropTarget() together" );
2966         SetDropTarget(new DragAcceptFilesTarget(this));
2967     }
2968     else
2969     {
2970         SetDropTarget(NULL);
2971     }
2972 }
2973
2974 #endif // wxUSE_DRAG_AND_DROP && !defined(__WXMSW__)
2975
2976 // ----------------------------------------------------------------------------
2977 // global functions
2978 // ----------------------------------------------------------------------------
2979
2980 wxWindow* wxGetTopLevelParent(wxWindow *win)
2981 {
2982     while ( win && !win->IsTopLevel() )
2983          win = win->GetParent();
2984
2985     return win;
2986 }
2987
2988 #if wxUSE_ACCESSIBILITY
2989 // ----------------------------------------------------------------------------
2990 // accessible object for windows
2991 // ----------------------------------------------------------------------------
2992
2993 // Can return either a child object, or an integer
2994 // representing the child element, starting from 1.
2995 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
2996 {
2997     wxASSERT( GetWindow() != NULL );
2998     if (!GetWindow())
2999         return wxACC_FAIL;
3000
3001     return wxACC_NOT_IMPLEMENTED;
3002 }
3003
3004 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
3005 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
3006 {
3007     wxASSERT( GetWindow() != NULL );
3008     if (!GetWindow())
3009         return wxACC_FAIL;
3010
3011     wxWindow* win = NULL;
3012     if (elementId == 0)
3013     {
3014         win = GetWindow();
3015     }
3016     else
3017     {
3018         if (elementId <= (int) GetWindow()->GetChildren().GetCount())
3019         {
3020             win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
3021         }
3022         else
3023             return wxACC_FAIL;
3024     }
3025     if (win)
3026     {
3027         rect = win->GetRect();
3028         if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
3029             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
3030         return wxACC_OK;
3031     }
3032
3033     return wxACC_NOT_IMPLEMENTED;
3034 }
3035
3036 // Navigates from fromId to toId/toObject.
3037 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
3038                              int* WXUNUSED(toId), wxAccessible** toObject)
3039 {
3040     wxASSERT( GetWindow() != NULL );
3041     if (!GetWindow())
3042         return wxACC_FAIL;
3043
3044     switch (navDir)
3045     {
3046     case wxNAVDIR_FIRSTCHILD:
3047         {
3048             if (GetWindow()->GetChildren().GetCount() == 0)
3049                 return wxACC_FALSE;
3050             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
3051             *toObject = childWindow->GetOrCreateAccessible();
3052
3053             return wxACC_OK;
3054         }
3055     case wxNAVDIR_LASTCHILD:
3056         {
3057             if (GetWindow()->GetChildren().GetCount() == 0)
3058                 return wxACC_FALSE;
3059             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
3060             *toObject = childWindow->GetOrCreateAccessible();
3061
3062             return wxACC_OK;
3063         }
3064     case wxNAVDIR_RIGHT:
3065     case wxNAVDIR_DOWN:
3066     case wxNAVDIR_NEXT:
3067         {
3068             wxWindowList::compatibility_iterator node =
3069                 wxWindowList::compatibility_iterator();
3070             if (fromId == 0)
3071             {
3072                 // Can't navigate to sibling of this window
3073                 // if we're a top-level window.
3074                 if (!GetWindow()->GetParent())
3075                     return wxACC_NOT_IMPLEMENTED;
3076
3077                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
3078             }
3079             else
3080             {
3081                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
3082                     node = GetWindow()->GetChildren().Item(fromId-1);
3083             }
3084
3085             if (node && node->GetNext())
3086             {
3087                 wxWindow* nextWindow = node->GetNext()->GetData();
3088                 *toObject = nextWindow->GetOrCreateAccessible();
3089                 return wxACC_OK;
3090             }
3091             else
3092                 return wxACC_FALSE;
3093         }
3094     case wxNAVDIR_LEFT:
3095     case wxNAVDIR_UP:
3096     case wxNAVDIR_PREVIOUS:
3097         {
3098             wxWindowList::compatibility_iterator node =
3099                 wxWindowList::compatibility_iterator();
3100             if (fromId == 0)
3101             {
3102                 // Can't navigate to sibling of this window
3103                 // if we're a top-level window.
3104                 if (!GetWindow()->GetParent())
3105                     return wxACC_NOT_IMPLEMENTED;
3106
3107                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
3108             }
3109             else
3110             {
3111                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
3112                     node = GetWindow()->GetChildren().Item(fromId-1);
3113             }
3114
3115             if (node && node->GetPrevious())
3116             {
3117                 wxWindow* previousWindow = node->GetPrevious()->GetData();
3118                 *toObject = previousWindow->GetOrCreateAccessible();
3119                 return wxACC_OK;
3120             }
3121             else
3122                 return wxACC_FALSE;
3123         }
3124     }
3125
3126     return wxACC_NOT_IMPLEMENTED;
3127 }
3128
3129 // Gets the name of the specified object.
3130 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
3131 {
3132     wxASSERT( GetWindow() != NULL );
3133     if (!GetWindow())
3134         return wxACC_FAIL;
3135
3136     wxString title;
3137
3138     // If a child, leave wxWidgets to call the function on the actual
3139     // child object.
3140     if (childId > 0)
3141         return wxACC_NOT_IMPLEMENTED;
3142
3143     // This will eventually be replaced by specialised
3144     // accessible classes, one for each kind of wxWidgets
3145     // control or window.
3146 #if wxUSE_BUTTON
3147     if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
3148         title = ((wxButton*) GetWindow())->GetLabel();
3149     else
3150 #endif
3151         title = GetWindow()->GetName();
3152
3153     if (!title.empty())
3154     {
3155         *name = title;
3156         return wxACC_OK;
3157     }
3158     else
3159         return wxACC_NOT_IMPLEMENTED;
3160 }
3161
3162 // Gets the number of children.
3163 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
3164 {
3165     wxASSERT( GetWindow() != NULL );
3166     if (!GetWindow())
3167         return wxACC_FAIL;
3168
3169     *childId = (int) GetWindow()->GetChildren().GetCount();
3170     return wxACC_OK;
3171 }
3172
3173 // Gets the specified child (starting from 1).
3174 // If *child is NULL and return value is wxACC_OK,
3175 // this means that the child is a simple element and
3176 // not an accessible object.
3177 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
3178 {
3179     wxASSERT( GetWindow() != NULL );
3180     if (!GetWindow())
3181         return wxACC_FAIL;
3182
3183     if (childId == 0)
3184     {
3185         *child = this;
3186         return wxACC_OK;
3187     }
3188
3189     if (childId > (int) GetWindow()->GetChildren().GetCount())
3190         return wxACC_FAIL;
3191
3192     wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
3193     *child = childWindow->GetOrCreateAccessible();
3194     if (*child)
3195         return wxACC_OK;
3196     else
3197         return wxACC_FAIL;
3198 }
3199
3200 // Gets the parent, or NULL.
3201 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
3202 {
3203     wxASSERT( GetWindow() != NULL );
3204     if (!GetWindow())
3205         return wxACC_FAIL;
3206
3207     wxWindow* parentWindow = GetWindow()->GetParent();
3208     if (!parentWindow)
3209     {
3210         *parent = NULL;
3211         return wxACC_OK;
3212     }
3213     else
3214     {
3215         *parent = parentWindow->GetOrCreateAccessible();
3216         if (*parent)
3217             return wxACC_OK;
3218         else
3219             return wxACC_FAIL;
3220     }
3221 }
3222
3223 // Performs the default action. childId is 0 (the action for this object)
3224 // or > 0 (the action for a child).
3225 // Return wxACC_NOT_SUPPORTED if there is no default action for this
3226 // window (e.g. an edit control).
3227 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
3228 {
3229     wxASSERT( GetWindow() != NULL );
3230     if (!GetWindow())
3231         return wxACC_FAIL;
3232
3233     return wxACC_NOT_IMPLEMENTED;
3234 }
3235
3236 // Gets the default action for this object (0) or > 0 (the action for a child).
3237 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
3238 // string if there is no action.
3239 // The retrieved string describes the action that is performed on an object,
3240 // not what the object does as a result. For example, a toolbar button that prints
3241 // a document has a default action of "Press" rather than "Prints the current document."
3242 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
3243 {
3244     wxASSERT( GetWindow() != NULL );
3245     if (!GetWindow())
3246         return wxACC_FAIL;
3247
3248     return wxACC_NOT_IMPLEMENTED;
3249 }
3250
3251 // Returns the description for this object or a child.
3252 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
3253 {
3254     wxASSERT( GetWindow() != NULL );
3255     if (!GetWindow())
3256         return wxACC_FAIL;
3257
3258     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3259     if (!ht.empty())
3260     {
3261         *description = ht;
3262         return wxACC_OK;
3263     }
3264     return wxACC_NOT_IMPLEMENTED;
3265 }
3266
3267 // Returns help text for this object or a child, similar to tooltip text.
3268 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
3269 {
3270     wxASSERT( GetWindow() != NULL );
3271     if (!GetWindow())
3272         return wxACC_FAIL;
3273
3274     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3275     if (!ht.empty())
3276     {
3277         *helpText = ht;
3278         return wxACC_OK;
3279     }
3280     return wxACC_NOT_IMPLEMENTED;
3281 }
3282
3283 // Returns the keyboard shortcut for this object or child.
3284 // Return e.g. ALT+K
3285 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
3286 {
3287     wxASSERT( GetWindow() != NULL );
3288     if (!GetWindow())
3289         return wxACC_FAIL;
3290
3291     return wxACC_NOT_IMPLEMENTED;
3292 }
3293
3294 // Returns a role constant.
3295 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
3296 {
3297     wxASSERT( GetWindow() != NULL );
3298     if (!GetWindow())
3299         return wxACC_FAIL;
3300
3301     // If a child, leave wxWidgets to call the function on the actual
3302     // child object.
3303     if (childId > 0)
3304         return wxACC_NOT_IMPLEMENTED;
3305
3306     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3307         return wxACC_NOT_IMPLEMENTED;
3308 #if wxUSE_STATUSBAR
3309     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3310         return wxACC_NOT_IMPLEMENTED;
3311 #endif
3312 #if wxUSE_TOOLBAR
3313     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3314         return wxACC_NOT_IMPLEMENTED;
3315 #endif
3316
3317     //*role = wxROLE_SYSTEM_CLIENT;
3318     *role = wxROLE_SYSTEM_CLIENT;
3319     return wxACC_OK;
3320
3321     #if 0
3322     return wxACC_NOT_IMPLEMENTED;
3323     #endif
3324 }
3325
3326 // Returns a state constant.
3327 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
3328 {
3329     wxASSERT( GetWindow() != NULL );
3330     if (!GetWindow())
3331         return wxACC_FAIL;
3332
3333     // If a child, leave wxWidgets to call the function on the actual
3334     // child object.
3335     if (childId > 0)
3336         return wxACC_NOT_IMPLEMENTED;
3337
3338     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3339         return wxACC_NOT_IMPLEMENTED;
3340
3341 #if wxUSE_STATUSBAR
3342     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3343         return wxACC_NOT_IMPLEMENTED;
3344 #endif
3345 #if wxUSE_TOOLBAR
3346     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3347         return wxACC_NOT_IMPLEMENTED;
3348 #endif
3349
3350     *state = 0;
3351     return wxACC_OK;
3352
3353     #if 0
3354     return wxACC_NOT_IMPLEMENTED;
3355     #endif
3356 }
3357
3358 // Returns a localized string representing the value for the object
3359 // or child.
3360 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
3361 {
3362     wxASSERT( GetWindow() != NULL );
3363     if (!GetWindow())
3364         return wxACC_FAIL;
3365
3366     return wxACC_NOT_IMPLEMENTED;
3367 }
3368
3369 // Selects the object or child.
3370 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
3371 {
3372     wxASSERT( GetWindow() != NULL );
3373     if (!GetWindow())
3374         return wxACC_FAIL;
3375
3376     return wxACC_NOT_IMPLEMENTED;
3377 }
3378
3379 // Gets the window with the keyboard focus.
3380 // If childId is 0 and child is NULL, no object in
3381 // this subhierarchy has the focus.
3382 // If this object has the focus, child should be 'this'.
3383 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
3384 {
3385     wxASSERT( GetWindow() != NULL );
3386     if (!GetWindow())
3387         return wxACC_FAIL;
3388
3389     return wxACC_NOT_IMPLEMENTED;
3390 }
3391
3392 #if wxUSE_VARIANT
3393 // Gets a variant representing the selected children
3394 // of this object.
3395 // Acceptable values:
3396 // - a null variant (IsNull() returns true)
3397 // - a list variant (GetType() == wxT("list")
3398 // - an integer representing the selected child element,
3399 //   or 0 if this object is selected (GetType() == wxT("long")
3400 // - a "void*" pointer to a wxAccessible child object
3401 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
3402 {
3403     wxASSERT( GetWindow() != NULL );
3404     if (!GetWindow())
3405         return wxACC_FAIL;
3406
3407     return wxACC_NOT_IMPLEMENTED;
3408 }
3409 #endif // wxUSE_VARIANT
3410
3411 #endif // wxUSE_ACCESSIBILITY
3412
3413 // ----------------------------------------------------------------------------
3414 // RTL support
3415 // ----------------------------------------------------------------------------
3416
3417 wxCoord
3418 wxWindowBase::AdjustForLayoutDirection(wxCoord x,
3419                                        wxCoord width,
3420                                        wxCoord widthTotal) const
3421 {
3422     if ( GetLayoutDirection() == wxLayout_RightToLeft )
3423     {
3424         x = widthTotal - x - width;
3425     }
3426
3427     return x;
3428 }
3429
3430