src/common/wincmn.cpp

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