src/common/wincmn.cpp

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