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/msgout.h"
  42     #include "wx/statusbr.h"
  43     #include "wx/toolbar.h"
  44     #include "wx/dcclient.h"
  45     #include "wx/scrolbar.h"
  46     #include "wx/layout.h"
  47     #include "wx/sizer.h"
  48     #include "wx/menu.h"
  49 #endif //WX_PRECOMP
  50
  51 #if wxUSE_DRAG_AND_DROP
  52     #include "wx/dnd.h"
  53 #endif // wxUSE_DRAG_AND_DROP
  54
  55 #if wxUSE_ACCESSIBILITY
  56     #include "wx/access.h"
  57 #endif
  58
  59 #if wxUSE_HELP
  60     #include "wx/cshelp.h"
  61 #endif // wxUSE_HELP
  62
  63 #if wxUSE_TOOLTIPS
  64     #include "wx/tooltip.h"
  65 #endif // wxUSE_TOOLTIPS
  66
  67 #if wxUSE_CARET
  68     #include "wx/caret.h"
  69 #endif // wxUSE_CARET
  70
  71 #if wxUSE_SYSTEM_OPTIONS
  72     #include "wx/sysopt.h"
  73 #endif
  74
  75 #include "wx/platinfo.h"
  76
  77 // Windows List
  78 WXDLLIMPEXP_DATA_CORE(wxWindowList) wxTopLevelWindows;
  79
  80 // globals
  81 #if wxUSE_MENUS
  82 wxMenu *wxCurrentPopupMenu = NULL;
  83 #endif // wxUSE_MENUS
  84
  85 // ----------------------------------------------------------------------------
  86 // static data
  87 // ----------------------------------------------------------------------------
  88
  89
  90 IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
  91
  92 // ----------------------------------------------------------------------------
  93 // event table
  94 // ----------------------------------------------------------------------------
  95
  96 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
  97     EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
  98     EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
  99     EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
 100
 101 #if wxUSE_HELP
 102     EVT_HELP(wxID_ANY, wxWindowBase::OnHelp)
 103 #endif // wxUSE_HELP
 104
 105     EVT_SIZE(wxWindowBase::InternalOnSize)
 106 END_EVENT_TABLE()
 107
 108 // ============================================================================
 109 // implementation of the common functionality of the wxWindow class
 110 // ============================================================================
 111
 112 // ----------------------------------------------------------------------------
 113 // initialization
 114 // ----------------------------------------------------------------------------
 115
 116 // the default initialization
 117 wxWindowBase::wxWindowBase()
 118 {
 119     // no window yet, no parent nor children
 120     m_parent = NULL;
 121     m_windowId = wxID_ANY;
 122
 123     // no constraints on the minimal window size
 124     m_minWidth =
 125     m_maxWidth = wxDefaultCoord;
 126     m_minHeight =
 127     m_maxHeight = wxDefaultCoord;
 128
 129     // invalidiated cache value
 130     m_bestSizeCache = wxDefaultSize;
 131
 132     // window are created enabled and visible by default
 133     m_isShown =
 134     m_isEnabled = true;
 135
 136     // the default event handler is just this window
 137     m_eventHandler = this;
 138
 139 #if wxUSE_VALIDATORS
 140     // no validator
 141     m_windowValidator = NULL;
 142 #endif // wxUSE_VALIDATORS
 143
 144     // the colours/fonts are default for now, so leave m_font,
 145     // m_backgroundColour and m_foregroundColour uninitialized and set those
 146     m_hasBgCol =
 147     m_hasFgCol =
 148     m_hasFont = false;
 149     m_inheritBgCol =
 150     m_inheritFgCol =
 151     m_inheritFont = false;
 152
 153     // no style bits
 154     m_exStyle =
 155     m_windowStyle = 0;
 156
 157     m_backgroundStyle = wxBG_STYLE_ERASE;
 158
 159 #if wxUSE_CONSTRAINTS
 160     // no constraints whatsoever
 161     m_constraints = NULL;
 162     m_constraintsInvolvedIn = NULL;
 163 #endif // wxUSE_CONSTRAINTS
 164
 165     m_windowSizer = NULL;
 166     m_containingSizer = NULL;
 167     m_autoLayout = false;
 168
 169 #if wxUSE_DRAG_AND_DROP
 170     m_dropTarget = NULL;
 171 #endif // wxUSE_DRAG_AND_DROP
 172
 173 #if wxUSE_TOOLTIPS
 174     m_tooltip = NULL;
 175 #endif // wxUSE_TOOLTIPS
 176
 177 #if wxUSE_CARET
 178     m_caret = NULL;
 179 #endif // wxUSE_CARET
 180
 181 #if wxUSE_PALETTE
 182     m_hasCustomPalette = false;
 183 #endif // wxUSE_PALETTE
 184
 185 #if wxUSE_ACCESSIBILITY
 186     m_accessible = NULL;
 187 #endif
 188
 189     m_virtualSize = wxDefaultSize;
 190
 191     m_scrollHelper = NULL;
 192
 193     m_windowVariant = wxWINDOW_VARIANT_NORMAL;
 194 #if wxUSE_SYSTEM_OPTIONS
 195     if ( wxSystemOptions::HasOption(wxWINDOW_DEFAULT_VARIANT) )
 196     {
 197        m_windowVariant = (wxWindowVariant) wxSystemOptions::GetOptionInt( wxWINDOW_DEFAULT_VARIANT ) ;
 198     }
 199 #endif
 200
 201     // Whether we're using the current theme for this window (wxGTK only for now)
 202     m_themeEnabled = false;
 203
 204     // This is set to true by SendDestroyEvent() which should be called by the
 205     // most derived class to ensure that the destruction event is sent as soon
 206     // as possible to allow its handlers to still see the undestroyed window
 207     m_isBeingDeleted = false;
 208
 209     m_freezeCount = 0;
 210 }
 211
 212 // common part of window creation process
 213 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 214                               wxWindowID id,
 215                               const wxPoint& WXUNUSED(pos),
 216                               const wxSize& size,
 217                               long style,
 218                               const wxString& name)
 219 {
 220     // ids are limited to 16 bits under MSW so if you care about portability,
 221     // it's not a good idea to use ids out of this range (and negative ids are
 222     // reserved for wxWidgets own usage)
 223     wxASSERT_MSG( id == wxID_ANY || (id >= 0 && id < 32767) ||
 224                   (id >= wxID_AUTO_LOWEST && id <= wxID_AUTO_HIGHEST),
 225                   wxT("invalid id value") );
 226
 227     // generate a new id if the user doesn't care about it
 228     if ( id == wxID_ANY )
 229     {
 230         m_windowId = NewControlId();
 231     }
 232     else // valid id specified
 233     {
 234         m_windowId = id;
 235     }
 236
 237     // don't use SetWindowStyleFlag() here, this function should only be called
 238     // to change the flag after creation as it tries to reflect the changes in
 239     // flags by updating the window dynamically and we don't need this here
 240     m_windowStyle = style;
 241
 242     // assume the user doesn't want this window to shrink beneath its initial
 243     // size, this worked like this in wxWidgets 2.8 and before and generally
 244     // often makes sense for child windows (for top level ones it definitely
 245     // does not as the user should be able to resize the window)
 246     if ( !wxTopLevelWindows.Find(this) ) // can't use IsTopLevel() from ctor
 247         SetMinSize(size);
 248
 249     SetName(name);
 250     SetParent(parent);
 251
 252     return true;
 253 }
 254
 255 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 256                               wxWindowID id,
 257                               const wxPoint& pos,
 258                               const wxSize& size,
 259                               long style,
 260                               const wxValidator& wxVALIDATOR_PARAM(validator),
 261                               const wxString& name)
 262 {
 263     if ( !CreateBase(parent, id, pos, size, style, name) )
 264         return false;
 265
 266 #if wxUSE_VALIDATORS
 267     SetValidator(validator);
 268 #endif // wxUSE_VALIDATORS
 269
 270     // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
 271     // have it too - like this it's possible to set it only in the top level
 272     // dialog/frame and all children will inherit it by defult
 273     if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
 274     {
 275         SetExtraStyle(GetExtraStyle() | wxWS_EX_VALIDATE_RECURSIVELY);
 276     }
 277
 278     return true;
 279 }
 280
 281 bool wxWindowBase::ToggleWindowStyle(int flag)
 282 {
 283     wxASSERT_MSG( flag, wxT("flags with 0 value can't be toggled") );
 284
 285     bool rc;
 286     long style = GetWindowStyleFlag();
 287     if ( style & flag )
 288     {
 289         style &= ~flag;
 290         rc = false;
 291     }
 292     else // currently off
 293     {
 294         style |= flag;
 295         rc = true;
 296     }
 297
 298     SetWindowStyleFlag(style);
 299
 300     return rc;
 301 }
 302
 303 // ----------------------------------------------------------------------------
 304 // destruction
 305 // ----------------------------------------------------------------------------
 306
 307 // common clean up
 308 wxWindowBase::~wxWindowBase()
 309 {
 310     wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
 311
 312     // FIXME if these 2 cases result from programming errors in the user code
 313     //       we should probably assert here instead of silently fixing them
 314
 315     // Just in case the window has been Closed, but we're then deleting
 316     // immediately: don't leave dangling pointers.
 317     wxPendingDelete.DeleteObject(this);
 318
 319     // Just in case we've loaded a top-level window via LoadNativeDialog but
 320     // we weren't a dialog class
 321     wxTopLevelWindows.DeleteObject((wxWindow*)this);
 322
 323 #if wxUSE_MENUS
 324     // The associated popup menu can still be alive, disassociate from it in
 325     // this case
 326     if ( wxCurrentPopupMenu && wxCurrentPopupMenu->GetInvokingWindow() == this )
 327         wxCurrentPopupMenu->SetInvokingWindow(NULL);
 328 #endif // wxUSE_MENUS
 329
 330     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 331
 332     // notify the parent about this window destruction
 333     if ( m_parent )
 334         m_parent->RemoveChild(this);
 335
 336 #if wxUSE_CARET
 337     delete m_caret;
 338 #endif // wxUSE_CARET
 339
 340 #if wxUSE_VALIDATORS
 341     delete m_windowValidator;
 342 #endif // wxUSE_VALIDATORS
 343
 344 #if wxUSE_CONSTRAINTS
 345     // Have to delete constraints/sizer FIRST otherwise sizers may try to look
 346     // at deleted windows as they delete themselves.
 347     DeleteRelatedConstraints();
 348
 349     if ( m_constraints )
 350     {
 351         // This removes any dangling pointers to this window in other windows'
 352         // constraintsInvolvedIn lists.
 353         UnsetConstraints(m_constraints);
 354         delete m_constraints;
 355         m_constraints = NULL;
 356     }
 357 #endif // wxUSE_CONSTRAINTS
 358
 359     if ( m_containingSizer )
 360         m_containingSizer->Detach( (wxWindow*)this );
 361
 362     delete m_windowSizer;
 363
 364 #if wxUSE_DRAG_AND_DROP
 365     delete m_dropTarget;
 366 #endif // wxUSE_DRAG_AND_DROP
 367
 368 #if wxUSE_TOOLTIPS
 369     delete m_tooltip;
 370 #endif // wxUSE_TOOLTIPS
 371
 372 #if wxUSE_ACCESSIBILITY
 373     delete m_accessible;
 374 #endif
 375
 376 #if wxUSE_HELP
 377     // NB: this has to be called unconditionally, because we don't know
 378     //     whether this window has associated help text or not
 379     wxHelpProvider *helpProvider = wxHelpProvider::Get();
 380     if ( helpProvider )
 381         helpProvider->RemoveHelp(this);
 382 #endif
 383 }
 384
 385 bool wxWindowBase::IsBeingDeleted() const
 386 {
 387     return m_isBeingDeleted ||
 388             (!IsTopLevel() && m_parent && m_parent->IsBeingDeleted());
 389 }
 390
 391 void wxWindowBase::SendDestroyEvent()
 392 {
 393     if ( m_isBeingDeleted )
 394     {
 395         // we could have been already called from a more derived class dtor,
 396         // e.g. ~wxTLW calls us and so does ~wxWindow and the latter call
 397         // should be simply ignored
 398         return;
 399     }
 400
 401     m_isBeingDeleted = true;
 402
 403     wxWindowDestroyEvent event;
 404     event.SetEventObject(this);
 405     event.SetId(GetId());
 406     GetEventHandler()->ProcessEvent(event);
 407 }
 408
 409 bool wxWindowBase::Destroy()
 410 {
 411     SendDestroyEvent();
 412
 413     delete this;
 414
 415     return true;
 416 }
 417
 418 bool wxWindowBase::Close(bool force)
 419 {
 420     wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
 421     event.SetEventObject(this);
 422     event.SetCanVeto(!force);
 423
 424     // return false if window wasn't closed because the application vetoed the
 425     // close event
 426     return HandleWindowEvent(event) && !event.GetVeto();
 427 }
 428
 429 bool wxWindowBase::DestroyChildren()
 430 {
 431     wxWindowList::compatibility_iterator node;
 432     for ( ;; )
 433     {
 434         // we iterate until the list becomes empty
 435         node = GetChildren().GetFirst();
 436         if ( !node )
 437             break;
 438
 439         wxWindow *child = node->GetData();
 440
 441         // note that we really want to delete it immediately so don't call the
 442         // possible overridden Destroy() version which might not delete the
 443         // child immediately resulting in problems with our (top level) child
 444         // outliving its parent
 445         child->wxWindowBase::Destroy();
 446
 447         wxASSERT_MSG( !GetChildren().Find(child),
 448                       wxT("child didn't remove itself using RemoveChild()") );
 449     }
 450
 451     return true;
 452 }
 453
 454 // ----------------------------------------------------------------------------
 455 // size/position related methods
 456 // ----------------------------------------------------------------------------
 457
 458 // centre the window with respect to its parent in either (or both) directions
 459 void wxWindowBase::DoCentre(int dir)
 460 {
 461     wxCHECK_RET( !(dir & wxCENTRE_ON_SCREEN) && GetParent(),
 462                  wxT("this method only implements centering child windows") );
 463
 464     SetSize(GetRect().CentreIn(GetParent()->GetClientSize(), dir));
 465 }
 466
 467 // fits the window around the children
 468 void wxWindowBase::Fit()
 469 {
 470     if ( !GetChildren().empty() )
 471     {
 472         SetSize(GetBestSize());
 473     }
 474     //else: do nothing if we have no children
 475 }
 476
 477 // fits virtual size (ie. scrolled area etc.) around children
 478 void wxWindowBase::FitInside()
 479 {
 480     if ( GetChildren().GetCount() > 0 )
 481     {
 482         SetVirtualSize( GetBestVirtualSize() );
 483     }
 484 }
 485
 486 // On Mac, scrollbars are explicitly children.
 487 #if defined( __WXMAC__ ) && !defined(__WXUNIVERSAL__)
 488 static bool wxHasRealChildren(const wxWindowBase* win)
 489 {
 490     int realChildCount = 0;
 491
 492     for ( wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
 493           node;
 494           node = node->GetNext() )
 495     {
 496         wxWindow *win = node->GetData();
 497         if ( !win->IsTopLevel() && win->IsShown()
 498 #if wxUSE_SCROLLBAR
 499             && !win->IsKindOf(CLASSINFO(wxScrollBar))
 500 #endif
 501             )
 502             realChildCount ++;
 503     }
 504     return (realChildCount > 0);
 505 }
 506 #endif
 507
 508 void wxWindowBase::InvalidateBestSize()
 509 {
 510     m_bestSizeCache = wxDefaultSize;
 511
 512     // parent's best size calculation may depend on its children's
 513     // as long as child window we are in is not top level window itself
 514     // (because the TLW size is never resized automatically)
 515     // so let's invalidate it as well to be safe:
 516     if (m_parent && !IsTopLevel())
 517         m_parent->InvalidateBestSize();
 518 }
 519
 520 // return the size best suited for the current window
 521 wxSize wxWindowBase::DoGetBestSize() const
 522 {
 523     wxSize best;
 524
 525     if ( m_windowSizer )
 526     {
 527         best = m_windowSizer->GetMinSize();
 528     }
 529 #if wxUSE_CONSTRAINTS
 530     else if ( m_constraints )
 531     {
 532         wxConstCast(this, wxWindowBase)->SatisfyConstraints();
 533
 534         // our minimal acceptable size is such that all our windows fit inside
 535         int maxX = 0,
 536             maxY = 0;
 537
 538         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 539               node;
 540               node = node->GetNext() )
 541         {
 542             wxLayoutConstraints *c = node->GetData()->GetConstraints();
 543             if ( !c )
 544             {
 545                 // it's not normal that we have an unconstrained child, but
 546                 // what can we do about it?
 547                 continue;
 548             }
 549
 550             int x = c->right.GetValue(),
 551                 y = c->bottom.GetValue();
 552
 553             if ( x > maxX )
 554                 maxX = x;
 555
 556             if ( y > maxY )
 557                 maxY = y;
 558
 559             // TODO: we must calculate the overlaps somehow, otherwise we
 560             //       will never return a size bigger than the current one :-(
 561         }
 562
 563         best = wxSize(maxX, maxY);
 564     }
 565 #endif // wxUSE_CONSTRAINTS
 566     else if ( !GetChildren().empty()
 567 #if defined( __WXMAC__ ) && !defined(__WXUNIVERSAL__)
 568               && wxHasRealChildren(this)
 569 #endif
 570               )
 571     {
 572         // our minimal acceptable size is such that all our visible child
 573         // windows fit inside
 574         int maxX = 0,
 575             maxY = 0;
 576
 577         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 578               node;
 579               node = node->GetNext() )
 580         {
 581             wxWindow *win = node->GetData();
 582             if ( win->IsTopLevel()
 583                     || !win->IsShown()
 584 #if wxUSE_STATUSBAR
 585                         || wxDynamicCast(win, wxStatusBar)
 586 #endif // wxUSE_STATUSBAR
 587                )
 588             {
 589                 // dialogs and frames lie in different top level windows -
 590                 // don't deal with them here; as for the status bars, they
 591                 // don't lie in the client area at all
 592                 continue;
 593             }
 594
 595             int wx, wy, ww, wh;
 596             win->GetPosition(&wx, &wy);
 597
 598             // if the window hadn't been positioned yet, assume that it is in
 599             // the origin
 600             if ( wx == wxDefaultCoord )
 601                 wx = 0;
 602             if ( wy == wxDefaultCoord )
 603                 wy = 0;
 604
 605             win->GetSize(&ww, &wh);
 606             if ( wx + ww > maxX )
 607                 maxX = wx + ww;
 608             if ( wy + wh > maxY )
 609                 maxY = wy + wh;
 610         }
 611
 612         best = wxSize(maxX, maxY);
 613     }
 614     else // ! has children
 615     {
 616         wxSize size = GetMinSize();
 617         if ( !size.IsFullySpecified() )
 618         {
 619             // if the window doesn't define its best size we assume that it can
 620             // be arbitrarily small -- usually this is not the case, of course,
 621             // but we have no way to know what the limit is, it should really
 622             // override DoGetBestClientSize() itself to tell us
 623             size.SetDefaults(wxSize(1, 1));
 624         }
 625
 626         // return as-is, unadjusted by the client size difference.
 627         return size;
 628     }
 629
 630     // Add any difference between size and client size
 631     wxSize diff = GetSize() - GetClientSize();
 632     best.x += wxMax(0, diff.x);
 633     best.y += wxMax(0, diff.y);
 634
 635     return best;
 636 }
 637
 638 // helper of GetWindowBorderSize(): as many ports don't implement support for
 639 // wxSYS_BORDER/EDGE_X/Y metrics in their wxSystemSettings, use hard coded
 640 // fallbacks in this case
 641 static int wxGetMetricOrDefault(wxSystemMetric what, const wxWindowBase* win)
 642 {
 643     int rc = wxSystemSettings::GetMetric(
 644         what, static_cast<wxWindow*>(const_cast<wxWindowBase*>(win)));
 645     if ( rc == -1 )
 646     {
 647         switch ( what )
 648         {
 649             case wxSYS_BORDER_X:
 650             case wxSYS_BORDER_Y:
 651                 // 2D border is by default 1 pixel wide
 652                 rc = 1;
 653                 break;
 654
 655             case wxSYS_EDGE_X:
 656             case wxSYS_EDGE_Y:
 657                 // 3D borders are by default 2 pixels
 658                 rc = 2;
 659                 break;
 660
 661             default:
 662                 wxFAIL_MSG( wxT("unexpected wxGetMetricOrDefault() argument") );
 663                 rc = 0;
 664         }
 665     }
 666
 667     return rc;
 668 }
 669
 670 wxSize wxWindowBase::GetWindowBorderSize() const
 671 {
 672     wxSize size;
 673
 674     switch ( GetBorder() )
 675     {
 676         case wxBORDER_NONE:
 677             // nothing to do, size is already (0, 0)
 678             break;
 679
 680         case wxBORDER_SIMPLE:
 681         case wxBORDER_STATIC:
 682             size.x = wxGetMetricOrDefault(wxSYS_BORDER_X, this);
 683             size.y = wxGetMetricOrDefault(wxSYS_BORDER_Y, this);
 684             break;
 685
 686         case wxBORDER_SUNKEN:
 687         case wxBORDER_RAISED:
 688             size.x = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_X, this),
 689                            wxGetMetricOrDefault(wxSYS_BORDER_X, this));
 690             size.y = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_Y, this),
 691                            wxGetMetricOrDefault(wxSYS_BORDER_Y, this));
 692             break;
 693
 694         case wxBORDER_DOUBLE:
 695             size.x = wxGetMetricOrDefault(wxSYS_EDGE_X, this) +
 696                         wxGetMetricOrDefault(wxSYS_BORDER_X, this);
 697             size.y = wxGetMetricOrDefault(wxSYS_EDGE_Y, this) +
 698                         wxGetMetricOrDefault(wxSYS_BORDER_Y, this);
 699             break;
 700
 701         default:
 702             wxFAIL_MSG(wxT("Unknown border style."));
 703             break;
 704     }
 705
 706     // we have borders on both sides
 707     return size*2;
 708 }
 709
 710 wxSize wxWindowBase::GetEffectiveMinSize() const
 711 {
 712     // merge the best size with the min size, giving priority to the min size
 713     wxSize min = GetMinSize();
 714
 715     if (min.x == wxDefaultCoord || min.y == wxDefaultCoord)
 716     {
 717         wxSize best = GetBestSize();
 718         if (min.x == wxDefaultCoord) min.x =  best.x;
 719         if (min.y == wxDefaultCoord) min.y =  best.y;
 720     }
 721
 722     return min;
 723 }
 724
 725 wxSize wxWindowBase::GetBestSize() const
 726 {
 727     if ( !m_windowSizer && m_bestSizeCache.IsFullySpecified() )
 728         return m_bestSizeCache;
 729
 730     // call DoGetBestClientSize() first, if a derived class overrides it wants
 731     // it to be used
 732     wxSize size = DoGetBestClientSize();
 733     if ( size != wxDefaultSize )
 734     {
 735         size += DoGetBorderSize();
 736
 737         CacheBestSize(size);
 738         return size;
 739     }
 740
 741     return DoGetBestSize();
 742 }
 743
 744 void wxWindowBase::SetMinSize(const wxSize& minSize)
 745 {
 746     m_minWidth = minSize.x;
 747     m_minHeight = minSize.y;
 748 }
 749
 750 void wxWindowBase::SetMaxSize(const wxSize& maxSize)
 751 {
 752     m_maxWidth = maxSize.x;
 753     m_maxHeight = maxSize.y;
 754 }
 755
 756 void wxWindowBase::SetInitialSize(const wxSize& size)
 757 {
 758     // Set the min size to the size passed in.  This will usually either be
 759     // wxDefaultSize or the size passed to this window's ctor/Create function.
 760     SetMinSize(size);
 761
 762     // Merge the size with the best size if needed
 763     wxSize best = GetEffectiveMinSize();
 764
 765     // If the current size doesn't match then change it
 766     if (GetSize() != best)
 767         SetSize(best);
 768 }
 769
 770
 771 // by default the origin is not shifted
 772 wxPoint wxWindowBase::GetClientAreaOrigin() const
 773 {
 774     return wxPoint(0,0);
 775 }
 776
 777 wxSize wxWindowBase::ClientToWindowSize(const wxSize& size) const
 778 {
 779     const wxSize diff(GetSize() - GetClientSize());
 780
 781     return wxSize(size.x == -1 ? -1 : size.x + diff.x,
 782                   size.y == -1 ? -1 : size.y + diff.y);
 783 }
 784
 785 wxSize wxWindowBase::WindowToClientSize(const wxSize& size) const
 786 {
 787     const wxSize diff(GetSize() - GetClientSize());
 788
 789     return wxSize(size.x == -1 ? -1 : size.x - diff.x,
 790                   size.y == -1 ? -1 : size.y - diff.y);
 791 }
 792
 793 void wxWindowBase::SetWindowVariant( wxWindowVariant variant )
 794 {
 795     if ( m_windowVariant != variant )
 796     {
 797         m_windowVariant = variant;
 798
 799         DoSetWindowVariant(variant);
 800     }
 801 }
 802
 803 void wxWindowBase::DoSetWindowVariant( wxWindowVariant variant )
 804 {
 805     // adjust the font height to correspond to our new variant (notice that
 806     // we're only called if something really changed)
 807     wxFont font = GetFont();
 808     int size = font.GetPointSize();
 809     switch ( variant )
 810     {
 811         case wxWINDOW_VARIANT_NORMAL:
 812             break;
 813
 814         case wxWINDOW_VARIANT_SMALL:
 815             size *= 3;
 816             size /= 4;
 817             break;
 818
 819         case wxWINDOW_VARIANT_MINI:
 820             size *= 2;
 821             size /= 3;
 822             break;
 823
 824         case wxWINDOW_VARIANT_LARGE:
 825             size *= 5;
 826             size /= 4;
 827             break;
 828
 829         default:
 830             wxFAIL_MSG(wxT("unexpected window variant"));
 831             break;
 832     }
 833
 834     font.SetPointSize(size);
 835     SetFont(font);
 836 }
 837
 838 void wxWindowBase::DoSetSizeHints( int minW, int minH,
 839                                    int maxW, int maxH,
 840                                    int WXUNUSED(incW), int WXUNUSED(incH) )
 841 {
 842     wxCHECK_RET( (minW == wxDefaultCoord || maxW == wxDefaultCoord || minW <= maxW) &&
 843                     (minH == wxDefaultCoord || maxH == wxDefaultCoord || minH <= maxH),
 844                  wxT("min width/height must be less than max width/height!") );
 845
 846     m_minWidth = minW;
 847     m_maxWidth = maxW;
 848     m_minHeight = minH;
 849     m_maxHeight = maxH;
 850 }
 851
 852
 853 #if WXWIN_COMPATIBILITY_2_8
 854 void wxWindowBase::SetVirtualSizeHints(int WXUNUSED(minW), int WXUNUSED(minH),
 855                                        int WXUNUSED(maxW), int WXUNUSED(maxH))
 856 {
 857 }
 858
 859 void wxWindowBase::SetVirtualSizeHints(const wxSize& WXUNUSED(minsize),
 860                                        const wxSize& WXUNUSED(maxsize))
 861 {
 862 }
 863 #endif // WXWIN_COMPATIBILITY_2_8
 864
 865 void wxWindowBase::DoSetVirtualSize( int x, int y )
 866 {
 867     m_virtualSize = wxSize(x, y);
 868 }
 869
 870 wxSize wxWindowBase::DoGetVirtualSize() const
 871 {
 872     // we should use the entire client area so if it is greater than our
 873     // virtual size, expand it to fit (otherwise if the window is big enough we
 874     // wouldn't be using parts of it)
 875     wxSize size = GetClientSize();
 876     if ( m_virtualSize.x > size.x )
 877         size.x = m_virtualSize.x;
 878
 879     if ( m_virtualSize.y >= size.y )
 880         size.y = m_virtualSize.y;
 881
 882     return size;
 883 }
 884
 885 void wxWindowBase::DoGetScreenPosition(int *x, int *y) const
 886 {
 887     // screen position is the same as (0, 0) in client coords for non TLWs (and
 888     // TLWs override this method)
 889     if ( x )
 890         *x = 0;
 891     if ( y )
 892         *y = 0;
 893
 894     ClientToScreen(x, y);
 895 }
 896
 897 void wxWindowBase::SendSizeEvent(int flags)
 898 {
 899     wxSizeEvent event(GetSize(), GetId());
 900     event.SetEventObject(this);
 901     if ( flags & wxSEND_EVENT_POST )
 902         wxPostEvent(this, event);
 903     else
 904         HandleWindowEvent(event);
 905 }
 906
 907 void wxWindowBase::SendSizeEventToParent(int flags)
 908 {
 909     wxWindow * const parent = GetParent();
 910     if ( parent && !parent->IsBeingDeleted() )
 911         parent->SendSizeEvent(flags);
 912 }
 913
 914 bool wxWindowBase::HasScrollbar(int orient) const
 915 {
 916     // if scrolling in the given direction is disabled, we can't have the
 917     // corresponding scrollbar no matter what
 918     if ( !CanScroll(orient) )
 919         return false;
 920
 921     const wxSize sizeVirt = GetVirtualSize();
 922     const wxSize sizeClient = GetClientSize();
 923
 924     return orient == wxHORIZONTAL ? sizeVirt.x > sizeClient.x
 925                                   : sizeVirt.y > sizeClient.y;
 926 }
 927
 928 // ----------------------------------------------------------------------------
 929 // show/hide/enable/disable the window
 930 // ----------------------------------------------------------------------------
 931
 932 bool wxWindowBase::Show(bool show)
 933 {
 934     if ( show != m_isShown )
 935     {
 936         m_isShown = show;
 937
 938         return true;
 939     }
 940     else
 941     {
 942         return false;
 943     }
 944 }
 945
 946 bool wxWindowBase::IsEnabled() const
 947 {
 948     return IsThisEnabled() && (IsTopLevel() || !GetParent() || GetParent()->IsEnabled());
 949 }
 950
 951 void wxWindowBase::NotifyWindowOnEnableChange(bool enabled)
 952 {
 953 #ifndef wxHAS_NATIVE_ENABLED_MANAGEMENT
 954     DoEnable(enabled);
 955 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 956
 957     OnEnabled(enabled);
 958
 959     // If we are top-level then the logic doesn't apply - otherwise
 960     // showing a modal dialog would result in total greying out (and ungreying
 961     // out later) of everything which would be really ugly
 962     if ( IsTopLevel() )
 963         return;
 964
 965     for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 966           node;
 967           node = node->GetNext() )
 968     {
 969         wxWindowBase * const child = node->GetData();
 970         if ( !child->IsTopLevel() && child->IsThisEnabled() )
 971             child->NotifyWindowOnEnableChange(enabled);
 972     }
 973 }
 974
 975 bool wxWindowBase::Enable(bool enable)
 976 {
 977     if ( enable == IsThisEnabled() )
 978         return false;
 979
 980     m_isEnabled = enable;
 981
 982 #ifdef wxHAS_NATIVE_ENABLED_MANAGEMENT
 983     DoEnable(enable);
 984 #else // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 985     wxWindowBase * const parent = GetParent();
 986     if( !IsTopLevel() && parent && !parent->IsEnabled() )
 987     {
 988         return true;
 989     }
 990 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 991
 992     NotifyWindowOnEnableChange(enable);
 993
 994     return true;
 995 }
 996
 997 bool wxWindowBase::IsShownOnScreen() const
 998 {
 999     // A window is shown on screen if it itself is shown and so are all its
1000     // parents. But if a window is toplevel one, then its always visible on
1001     // screen if IsShown() returns true, even if it has a hidden parent.
1002     return IsShown() &&
1003            (IsTopLevel() || GetParent() == NULL || GetParent()->IsShownOnScreen());
1004 }
1005
1006 // ----------------------------------------------------------------------------
1007 // RTTI
1008 // ----------------------------------------------------------------------------
1009
1010 bool wxWindowBase::IsTopLevel() const
1011 {
1012     return false;
1013 }
1014
1015 // ----------------------------------------------------------------------------
1016 // Freeze/Thaw
1017 // ----------------------------------------------------------------------------
1018
1019 void wxWindowBase::Freeze()
1020 {
1021     if ( !m_freezeCount++ )
1022     {
1023         // physically freeze this window:
1024         DoFreeze();
1025
1026         // and recursively freeze all children:
1027         for ( wxWindowList::iterator i = GetChildren().begin();
1028               i != GetChildren().end(); ++i )
1029         {
1030             wxWindow *child = *i;
1031             if ( child->IsTopLevel() )
1032                 continue;
1033
1034             child->Freeze();
1035         }
1036     }
1037 }
1038
1039 void wxWindowBase::Thaw()
1040 {
1041     wxASSERT_MSG( m_freezeCount, "Thaw() without matching Freeze()" );
1042
1043     if ( !--m_freezeCount )
1044     {
1045         // recursively thaw all children:
1046         for ( wxWindowList::iterator i = GetChildren().begin();
1047               i != GetChildren().end(); ++i )
1048         {
1049             wxWindow *child = *i;
1050             if ( child->IsTopLevel() )
1051                 continue;
1052
1053             child->Thaw();
1054         }
1055
1056         // physically thaw this window:
1057         DoThaw();
1058     }
1059 }
1060
1061 // ----------------------------------------------------------------------------
1062 // reparenting the window
1063 // ----------------------------------------------------------------------------
1064
1065 void wxWindowBase::AddChild(wxWindowBase *child)
1066 {
1067     wxCHECK_RET( child, wxT("can't add a NULL child") );
1068
1069     // this should never happen and it will lead to a crash later if it does
1070     // because RemoveChild() will remove only one node from the children list
1071     // and the other(s) one(s) will be left with dangling pointers in them
1072     wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), wxT("AddChild() called twice") );
1073
1074     GetChildren().Append((wxWindow*)child);
1075     child->SetParent(this);
1076
1077     // adding a child while frozen will assert when thawed, so freeze it as if
1078     // it had been already present when we were frozen
1079     if ( IsFrozen() && !child->IsTopLevel() )
1080         child->Freeze();
1081 }
1082
1083 void wxWindowBase::RemoveChild(wxWindowBase *child)
1084 {
1085     wxCHECK_RET( child, wxT("can't remove a NULL child") );
1086
1087     // removing a child while frozen may result in permanently frozen window
1088     // if used e.g. from Reparent(), so thaw it
1089     //
1090     // NB: IsTopLevel() doesn't return true any more when a TLW child is being
1091     //     removed from its ~wxWindowBase, so check for IsBeingDeleted() too
1092     if ( IsFrozen() && !child->IsBeingDeleted() && !child->IsTopLevel() )
1093         child->Thaw();
1094
1095     GetChildren().DeleteObject((wxWindow *)child);
1096     child->SetParent(NULL);
1097 }
1098
1099 bool wxWindowBase::Reparent(wxWindowBase *newParent)
1100 {
1101     wxWindow *oldParent = GetParent();
1102     if ( newParent == oldParent )
1103     {
1104         // nothing done
1105         return false;
1106     }
1107
1108     const bool oldEnabledState = IsEnabled();
1109
1110     // unlink this window from the existing parent.
1111     if ( oldParent )
1112     {
1113         oldParent->RemoveChild(this);
1114     }
1115     else
1116     {
1117         wxTopLevelWindows.DeleteObject((wxWindow *)this);
1118     }
1119
1120     // add it to the new one
1121     if ( newParent )
1122     {
1123         newParent->AddChild(this);
1124     }
1125     else
1126     {
1127         wxTopLevelWindows.Append((wxWindow *)this);
1128     }
1129
1130     // We need to notify window (and its subwindows) if by changing the parent
1131     // we also change our enabled/disabled status.
1132     const bool newEnabledState = IsEnabled();
1133     if ( newEnabledState != oldEnabledState )
1134     {
1135         NotifyWindowOnEnableChange(newEnabledState);
1136     }
1137
1138     return true;
1139 }
1140
1141 // ----------------------------------------------------------------------------
1142 // event handler stuff
1143 // ----------------------------------------------------------------------------
1144
1145 void wxWindowBase::SetEventHandler(wxEvtHandler *handler)
1146 {
1147     wxCHECK_RET(handler != NULL, "SetEventHandler(NULL) called");
1148
1149     m_eventHandler = handler;
1150 }
1151
1152 void wxWindowBase::SetNextHandler(wxEvtHandler *WXUNUSED(handler))
1153 {
1154     // disable wxEvtHandler chain mechanism for wxWindows:
1155     // wxWindow uses its own stack mechanism which doesn't mix well with wxEvtHandler's one
1156
1157     wxFAIL_MSG("wxWindow cannot be part of a wxEvtHandler chain");
1158 }
1159 void wxWindowBase::SetPreviousHandler(wxEvtHandler *WXUNUSED(handler))
1160 {
1161     // we can't simply wxFAIL here as in SetNextHandler: in fact the last
1162     // handler of our stack when is destroyed will be Unlink()ed and thus
1163     // will call this function to update the pointer of this window...
1164
1165     //wxFAIL_MSG("wxWindow cannot be part of a wxEvtHandler chain");
1166 }
1167
1168 void wxWindowBase::PushEventHandler(wxEvtHandler *handlerToPush)
1169 {
1170     wxCHECK_RET( handlerToPush != NULL, "PushEventHandler(NULL) called" );
1171
1172     // the new handler is going to be part of the wxWindow stack of event handlers:
1173     // it can't be part also of an event handler double-linked chain:
1174     wxASSERT_MSG(handlerToPush->IsUnlinked(),
1175         "The handler being pushed in the wxWindow stack shouldn't be part of "
1176         "a wxEvtHandler chain; call Unlink() on it first");
1177
1178     wxEvtHandler *handlerOld = GetEventHandler();
1179     wxCHECK_RET( handlerOld, "an old event handler is NULL?" );
1180
1181     // now use wxEvtHandler double-linked list to implement a stack:
1182     handlerToPush->SetNextHandler(handlerOld);
1183
1184     if (handlerOld != this)
1185         handlerOld->SetPreviousHandler(handlerToPush);
1186
1187     SetEventHandler(handlerToPush);
1188
1189 #if wxDEBUG_LEVEL
1190     // final checks of the operations done above:
1191     wxASSERT_MSG( handlerToPush->GetPreviousHandler() == NULL,
1192         "the first handler of the wxWindow stack should "
1193         "have no previous handlers set" );
1194     wxASSERT_MSG( handlerToPush->GetNextHandler() != NULL,
1195         "the first handler of the wxWindow stack should "
1196         "have non-NULL next handler" );
1197
1198     wxEvtHandler* pLast = handlerToPush;
1199     while ( pLast && pLast != this )
1200         pLast = pLast->GetNextHandler();
1201     wxASSERT_MSG( pLast->GetNextHandler() == NULL,
1202         "the last handler of the wxWindow stack should "
1203         "have this window as next handler" );
1204 #endif // wxDEBUG_LEVEL
1205 }
1206
1207 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
1208 {
1209     // we need to pop the wxWindow stack, i.e. we need to remove the first handler
1210
1211     wxEvtHandler *firstHandler = GetEventHandler();
1212     wxCHECK_MSG( firstHandler != NULL, NULL, "wxWindow cannot have a NULL event handler" );
1213     wxCHECK_MSG( firstHandler != this, NULL, "cannot pop the wxWindow itself" );
1214     wxCHECK_MSG( firstHandler->GetPreviousHandler() == NULL, NULL,
1215         "the first handler of the wxWindow stack should have no previous handlers set" );
1216
1217     wxEvtHandler *secondHandler = firstHandler->GetNextHandler();
1218     wxCHECK_MSG( secondHandler != NULL, NULL,
1219         "the first handler of the wxWindow stack should have non-NULL next handler" );
1220
1221     firstHandler->SetNextHandler(NULL);
1222     secondHandler->SetPreviousHandler(NULL);
1223
1224     // now firstHandler is completely unlinked; set secondHandler as the new window event handler
1225     SetEventHandler(secondHandler);
1226
1227     if ( deleteHandler )
1228     {
1229         delete firstHandler;
1230         firstHandler = NULL;
1231     }
1232
1233     return firstHandler;
1234 }
1235
1236 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handlerToRemove)
1237 {
1238     wxCHECK_MSG( handlerToRemove != NULL, false, "RemoveEventHandler(NULL) called" );
1239     wxCHECK_MSG( handlerToRemove != this, false, "Cannot remove the window itself" );
1240
1241     if (handlerToRemove == GetEventHandler())
1242     {
1243         // removing the first event handler is equivalent to "popping" the stack
1244         PopEventHandler(false);
1245         return true;
1246     }
1247
1248     // NOTE: the wxWindow event handler list is always terminated with "this" handler
1249     wxEvtHandler *handlerCur = GetEventHandler()->GetNextHandler();
1250     while ( handlerCur != this )
1251     {
1252         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
1253
1254         if ( handlerCur == handlerToRemove )
1255         {
1256             handlerCur->Unlink();
1257
1258             wxASSERT_MSG( handlerCur != GetEventHandler(),
1259                         "the case Remove == Pop should was already handled" );
1260             return true;
1261         }
1262
1263         handlerCur = handlerNext;
1264     }
1265
1266     wxFAIL_MSG( wxT("where has the event handler gone?") );
1267
1268     return false;
1269 }
1270
1271 bool wxWindowBase::HandleWindowEvent(wxEvent& event) const
1272 {
1273     // SafelyProcessEvent() will handle exceptions nicely
1274     return GetEventHandler()->SafelyProcessEvent(event);
1275 }
1276
1277 // ----------------------------------------------------------------------------
1278 // colours, fonts &c
1279 // ----------------------------------------------------------------------------
1280
1281 void wxWindowBase::InheritAttributes()
1282 {
1283     const wxWindowBase * const parent = GetParent();
1284     if ( !parent )
1285         return;
1286
1287     // we only inherit attributes which had been explicitly set for the parent
1288     // which ensures that this only happens if the user really wants it and
1289     // not by default which wouldn't make any sense in modern GUIs where the
1290     // controls don't all use the same fonts (nor colours)
1291     if ( parent->m_inheritFont && !m_hasFont )
1292         SetFont(parent->GetFont());
1293
1294     // in addition, there is a possibility to explicitly forbid inheriting
1295     // colours at each class level by overriding ShouldInheritColours()
1296     if ( ShouldInheritColours() )
1297     {
1298         if ( parent->m_inheritFgCol && !m_hasFgCol )
1299             SetForegroundColour(parent->GetForegroundColour());
1300
1301         // inheriting (solid) background colour is wrong as it totally breaks
1302         // any kind of themed backgrounds
1303         //
1304         // instead, the controls should use the same background as their parent
1305         // (ideally by not drawing it at all)
1306 #if 0
1307         if ( parent->m_inheritBgCol && !m_hasBgCol )
1308             SetBackgroundColour(parent->GetBackgroundColour());
1309 #endif // 0
1310     }
1311 }
1312
1313 /* static */ wxVisualAttributes
1314 wxWindowBase::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1315 {
1316     // it is important to return valid values for all attributes from here,
1317     // GetXXX() below rely on this
1318     wxVisualAttributes attrs;
1319     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
1320     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
1321
1322     // On Smartphone/PocketPC, wxSYS_COLOUR_WINDOW is a better reflection of
1323     // the usual background colour than wxSYS_COLOUR_BTNFACE.
1324     // It's a pity that wxSYS_COLOUR_WINDOW isn't always a suitable background
1325     // colour on other platforms.
1326
1327 #if defined(__WXWINCE__) && (defined(__SMARTPHONE__) || defined(__POCKETPC__))
1328     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1329 #else
1330     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
1331 #endif
1332     return attrs;
1333 }
1334
1335 wxColour wxWindowBase::GetBackgroundColour() const
1336 {
1337     if ( !m_backgroundColour.IsOk() )
1338     {
1339         wxASSERT_MSG( !m_hasBgCol, wxT("we have invalid explicit bg colour?") );
1340
1341         // get our default background colour
1342         wxColour colBg = GetDefaultAttributes().colBg;
1343
1344         // we must return some valid colour to avoid redoing this every time
1345         // and also to avoid surprizing the applications written for older
1346         // wxWidgets versions where GetBackgroundColour() always returned
1347         // something -- so give them something even if it doesn't make sense
1348         // for this window (e.g. it has a themed background)
1349         if ( !colBg.Ok() )
1350             colBg = GetClassDefaultAttributes().colBg;
1351
1352         return colBg;
1353     }
1354     else
1355         return m_backgroundColour;
1356 }
1357
1358 wxColour wxWindowBase::GetForegroundColour() const
1359 {
1360     // logic is the same as above
1361     if ( !m_hasFgCol && !m_foregroundColour.Ok() )
1362     {
1363         wxColour colFg = GetDefaultAttributes().colFg;
1364
1365         if ( !colFg.IsOk() )
1366             colFg = GetClassDefaultAttributes().colFg;
1367
1368         return colFg;
1369     }
1370     else
1371         return m_foregroundColour;
1372 }
1373
1374 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
1375 {
1376     if ( colour == m_backgroundColour )
1377         return false;
1378
1379     m_hasBgCol = colour.IsOk();
1380
1381     m_inheritBgCol = m_hasBgCol;
1382     m_backgroundColour = colour;
1383     SetThemeEnabled( !m_hasBgCol && !m_foregroundColour.Ok() );
1384     return true;
1385 }
1386
1387 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
1388 {
1389     if (colour == m_foregroundColour )
1390         return false;
1391
1392     m_hasFgCol = colour.IsOk();
1393     m_inheritFgCol = m_hasFgCol;
1394     m_foregroundColour = colour;
1395     SetThemeEnabled( !m_hasFgCol && !m_backgroundColour.Ok() );
1396     return true;
1397 }
1398
1399 bool wxWindowBase::SetCursor(const wxCursor& cursor)
1400 {
1401     // setting an invalid cursor is ok, it means that we don't have any special
1402     // cursor
1403     if ( m_cursor.IsSameAs(cursor) )
1404     {
1405         // no change
1406         return false;
1407     }
1408
1409     m_cursor = cursor;
1410
1411     return true;
1412 }
1413
1414 wxFont wxWindowBase::GetFont() const
1415 {
1416     // logic is the same as in GetBackgroundColour()
1417     if ( !m_font.IsOk() )
1418     {
1419         wxASSERT_MSG( !m_hasFont, wxT("we have invalid explicit font?") );
1420
1421         wxFont font = GetDefaultAttributes().font;
1422         if ( !font.IsOk() )
1423             font = GetClassDefaultAttributes().font;
1424
1425         return font;
1426     }
1427     else
1428         return m_font;
1429 }
1430
1431 bool wxWindowBase::SetFont(const wxFont& font)
1432 {
1433     if ( font == m_font )
1434     {
1435         // no change
1436         return false;
1437     }
1438
1439     m_font = font;
1440     m_hasFont = font.IsOk();
1441     m_inheritFont = m_hasFont;
1442
1443     InvalidateBestSize();
1444
1445     return true;
1446 }
1447
1448 #if wxUSE_PALETTE
1449
1450 void wxWindowBase::SetPalette(const wxPalette& pal)
1451 {
1452     m_hasCustomPalette = true;
1453     m_palette = pal;
1454
1455     // VZ: can anyone explain me what do we do here?
1456     wxWindowDC d((wxWindow *) this);
1457     d.SetPalette(pal);
1458 }
1459
1460 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
1461 {
1462     wxWindow *win = (wxWindow *)this;
1463     while ( win && !win->HasCustomPalette() )
1464     {
1465         win = win->GetParent();
1466     }
1467
1468     return win;
1469 }
1470
1471 #endif // wxUSE_PALETTE
1472
1473 #if wxUSE_CARET
1474 void wxWindowBase::SetCaret(wxCaret *caret)
1475 {
1476     if ( m_caret )
1477     {
1478         delete m_caret;
1479     }
1480
1481     m_caret = caret;
1482
1483     if ( m_caret )
1484     {
1485         wxASSERT_MSG( m_caret->GetWindow() == this,
1486                       wxT("caret should be created associated to this window") );
1487     }
1488 }
1489 #endif // wxUSE_CARET
1490
1491 #if wxUSE_VALIDATORS
1492 // ----------------------------------------------------------------------------
1493 // validators
1494 // ----------------------------------------------------------------------------
1495
1496 void wxWindowBase::SetValidator(const wxValidator& validator)
1497 {
1498     if ( m_windowValidator )
1499         delete m_windowValidator;
1500
1501     m_windowValidator = (wxValidator *)validator.Clone();
1502
1503     if ( m_windowValidator )
1504         m_windowValidator->SetWindow(this);
1505 }
1506 #endif // wxUSE_VALIDATORS
1507
1508 // ----------------------------------------------------------------------------
1509 // update region stuff
1510 // ----------------------------------------------------------------------------
1511
1512 wxRect wxWindowBase::GetUpdateClientRect() const
1513 {
1514     wxRegion rgnUpdate = GetUpdateRegion();
1515     rgnUpdate.Intersect(GetClientRect());
1516     wxRect rectUpdate = rgnUpdate.GetBox();
1517     wxPoint ptOrigin = GetClientAreaOrigin();
1518     rectUpdate.x -= ptOrigin.x;
1519     rectUpdate.y -= ptOrigin.y;
1520
1521     return rectUpdate;
1522 }
1523
1524 bool wxWindowBase::DoIsExposed(int x, int y) const
1525 {
1526     return m_updateRegion.Contains(x, y) != wxOutRegion;
1527 }
1528
1529 bool wxWindowBase::DoIsExposed(int x, int y, int w, int h) const
1530 {
1531     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
1532 }
1533
1534 void wxWindowBase::ClearBackground()
1535 {
1536     // wxGTK uses its own version, no need to add never used code
1537 #ifndef __WXGTK__
1538     wxClientDC dc((wxWindow *)this);
1539     wxBrush brush(GetBackgroundColour(), wxBRUSHSTYLE_SOLID);
1540     dc.SetBackground(brush);
1541     dc.Clear();
1542 #endif // __WXGTK__
1543 }
1544
1545 // ----------------------------------------------------------------------------
1546 // find child window by id or name
1547 // ----------------------------------------------------------------------------
1548
1549 wxWindow *wxWindowBase::FindWindow(long id) const
1550 {
1551     if ( id == m_windowId )
1552         return (wxWindow *)this;
1553
1554     wxWindowBase *res = NULL;
1555     wxWindowList::compatibility_iterator node;
1556     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1557     {
1558         wxWindowBase *child = node->GetData();
1559         res = child->FindWindow( id );
1560     }
1561
1562     return (wxWindow *)res;
1563 }
1564
1565 wxWindow *wxWindowBase::FindWindow(const wxString& name) const
1566 {
1567     if ( name == m_windowName )
1568         return (wxWindow *)this;
1569
1570     wxWindowBase *res = NULL;
1571     wxWindowList::compatibility_iterator node;
1572     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1573     {
1574         wxWindow *child = node->GetData();
1575         res = child->FindWindow(name);
1576     }
1577
1578     return (wxWindow *)res;
1579 }
1580
1581
1582 // find any window by id or name or label: If parent is non-NULL, look through
1583 // children for a label or title matching the specified string. If NULL, look
1584 // through all top-level windows.
1585 //
1586 // to avoid duplicating code we reuse the same helper function but with
1587 // different comparators
1588
1589 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1590                                 const wxString& label, long id);
1591
1592 static
1593 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1594                            long WXUNUSED(id))
1595 {
1596     return win->GetLabel() == label;
1597 }
1598
1599 static
1600 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1601                           long WXUNUSED(id))
1602 {
1603     return win->GetName() == label;
1604 }
1605
1606 static
1607 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1608                         long id)
1609 {
1610     return win->GetId() == id;
1611 }
1612
1613 // recursive helper for the FindWindowByXXX() functions
1614 static
1615 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1616                                   const wxString& label,
1617                                   long id,
1618                                   wxFindWindowCmp cmp)
1619 {
1620     if ( parent )
1621     {
1622         // see if this is the one we're looking for
1623         if ( (*cmp)(parent, label, id) )
1624             return (wxWindow *)parent;
1625
1626         // It wasn't, so check all its children
1627         for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
1628               node;
1629               node = node->GetNext() )
1630         {
1631             // recursively check each child
1632             wxWindow *win = (wxWindow *)node->GetData();
1633             wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1634             if (retwin)
1635                 return retwin;
1636         }
1637     }
1638
1639     // Not found
1640     return NULL;
1641 }
1642
1643 // helper for FindWindowByXXX()
1644 static
1645 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1646                              const wxString& label,
1647                              long id,
1648                              wxFindWindowCmp cmp)
1649 {
1650     if ( parent )
1651     {
1652         // just check parent and all its children
1653         return wxFindWindowRecursively(parent, label, id, cmp);
1654     }
1655
1656     // start at very top of wx's windows
1657     for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1658           node;
1659           node = node->GetNext() )
1660     {
1661         // recursively check each window & its children
1662         wxWindow *win = node->GetData();
1663         wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1664         if (retwin)
1665             return retwin;
1666     }
1667
1668     return NULL;
1669 }
1670
1671 /* static */
1672 wxWindow *
1673 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1674 {
1675     return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1676 }
1677
1678 /* static */
1679 wxWindow *
1680 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1681 {
1682     wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1683
1684     if ( !win )
1685     {
1686         // fall back to the label
1687         win = FindWindowByLabel(title, parent);
1688     }
1689
1690     return win;
1691 }
1692
1693 /* static */
1694 wxWindow *
1695 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1696 {
1697     return wxFindWindowHelper(parent, wxEmptyString, id, wxFindWindowCmpIds);
1698 }
1699
1700 // ----------------------------------------------------------------------------
1701 // dialog oriented functions
1702 // ----------------------------------------------------------------------------
1703
1704 void wxWindowBase::MakeModal(bool modal)
1705 {
1706     // Disable all other windows
1707     if ( IsTopLevel() )
1708     {
1709         wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1710         while (node)
1711         {
1712             wxWindow *win = node->GetData();
1713             if (win != this)
1714                 win->Enable(!modal);
1715
1716             node = node->GetNext();
1717         }
1718     }
1719 }
1720
1721 bool wxWindowBase::Validate()
1722 {
1723 #if wxUSE_VALIDATORS
1724     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1725
1726     wxWindowList::compatibility_iterator node;
1727     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1728     {
1729         wxWindowBase *child = node->GetData();
1730         wxValidator *validator = child->GetValidator();
1731         if ( validator && !validator->Validate((wxWindow *)this) )
1732         {
1733             return false;
1734         }
1735
1736         if ( recurse && !child->Validate() )
1737         {
1738             return false;
1739         }
1740     }
1741 #endif // wxUSE_VALIDATORS
1742
1743     return true;
1744 }
1745
1746 bool wxWindowBase::TransferDataToWindow()
1747 {
1748 #if wxUSE_VALIDATORS
1749     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1750
1751     wxWindowList::compatibility_iterator node;
1752     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1753     {
1754         wxWindowBase *child = node->GetData();
1755         wxValidator *validator = child->GetValidator();
1756         if ( validator && !validator->TransferToWindow() )
1757         {
1758             wxLogWarning(_("Could not transfer data to window"));
1759 #if wxUSE_LOG
1760             wxLog::FlushActive();
1761 #endif // wxUSE_LOG
1762
1763             return false;
1764         }
1765
1766         if ( recurse )
1767         {
1768             if ( !child->TransferDataToWindow() )
1769             {
1770                 // warning already given
1771                 return false;
1772             }
1773         }
1774     }
1775 #endif // wxUSE_VALIDATORS
1776
1777     return true;
1778 }
1779
1780 bool wxWindowBase::TransferDataFromWindow()
1781 {
1782 #if wxUSE_VALIDATORS
1783     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1784
1785     wxWindowList::compatibility_iterator node;
1786     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1787     {
1788         wxWindow *child = node->GetData();
1789         wxValidator *validator = child->GetValidator();
1790         if ( validator && !validator->TransferFromWindow() )
1791         {
1792             // nop warning here because the application is supposed to give
1793             // one itself - we don't know here what might have gone wrongly
1794
1795             return false;
1796         }
1797
1798         if ( recurse )
1799         {
1800             if ( !child->TransferDataFromWindow() )
1801             {
1802                 // warning already given
1803                 return false;
1804             }
1805         }
1806     }
1807 #endif // wxUSE_VALIDATORS
1808
1809     return true;
1810 }
1811
1812 void wxWindowBase::InitDialog()
1813 {
1814     wxInitDialogEvent event(GetId());
1815     event.SetEventObject( this );
1816     GetEventHandler()->ProcessEvent(event);
1817 }
1818
1819 // ----------------------------------------------------------------------------
1820 // context-sensitive help support
1821 // ----------------------------------------------------------------------------
1822
1823 #if wxUSE_HELP
1824
1825 // associate this help text with this window
1826 void wxWindowBase::SetHelpText(const wxString& text)
1827 {
1828     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1829     if ( helpProvider )
1830     {
1831         helpProvider->AddHelp(this, text);
1832     }
1833 }
1834
1835 #if WXWIN_COMPATIBILITY_2_8
1836 // associate this help text with all windows with the same id as this
1837 // one
1838 void wxWindowBase::SetHelpTextForId(const wxString& text)
1839 {
1840     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1841     if ( helpProvider )
1842     {
1843         helpProvider->AddHelp(GetId(), text);
1844     }
1845 }
1846 #endif // WXWIN_COMPATIBILITY_2_8
1847
1848 // get the help string associated with this window (may be empty)
1849 // default implementation forwards calls to the help provider
1850 wxString
1851 wxWindowBase::GetHelpTextAtPoint(const wxPoint & WXUNUSED(pt),
1852                                  wxHelpEvent::Origin WXUNUSED(origin)) const
1853 {
1854     wxString text;
1855     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1856     if ( helpProvider )
1857     {
1858         text = helpProvider->GetHelp(this);
1859     }
1860
1861     return text;
1862 }
1863
1864 // show help for this window
1865 void wxWindowBase::OnHelp(wxHelpEvent& event)
1866 {
1867     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1868     if ( helpProvider )
1869     {
1870         wxPoint pos = event.GetPosition();
1871         const wxHelpEvent::Origin origin = event.GetOrigin();
1872         if ( origin == wxHelpEvent::Origin_Keyboard )
1873         {
1874             // if the help event was generated from keyboard it shouldn't
1875             // appear at the mouse position (which is still the only position
1876             // associated with help event) if the mouse is far away, although
1877             // we still do use the mouse position if it's over the window
1878             // because we suppose the user looks approximately at the mouse
1879             // already and so it would be more convenient than showing tooltip
1880             // at some arbitrary position which can be quite far from it
1881             const wxRect rectClient = GetClientRect();
1882             if ( !rectClient.Contains(ScreenToClient(pos)) )
1883             {
1884                 // position help slightly under and to the right of this window
1885                 pos = ClientToScreen(wxPoint(
1886                         2*GetCharWidth(),
1887                         rectClient.height + GetCharHeight()
1888                       ));
1889             }
1890         }
1891
1892         if ( helpProvider->ShowHelpAtPoint(this, pos, origin) )
1893         {
1894             // skip the event.Skip() below
1895             return;
1896         }
1897     }
1898
1899     event.Skip();
1900 }
1901
1902 #endif // wxUSE_HELP
1903
1904 // ----------------------------------------------------------------------------
1905 // tooltips
1906 // ----------------------------------------------------------------------------
1907
1908 #if wxUSE_TOOLTIPS
1909
1910 wxString wxWindowBase::GetToolTipText() const
1911 {
1912     return m_tooltip ? m_tooltip->GetTip() : wxString();
1913 }
1914
1915 void wxWindowBase::SetToolTip( const wxString &tip )
1916 {
1917     // don't create the new tooltip if we already have one
1918     if ( m_tooltip )
1919     {
1920         m_tooltip->SetTip( tip );
1921     }
1922     else
1923     {
1924         SetToolTip( new wxToolTip( tip ) );
1925     }
1926
1927     // setting empty tooltip text does not remove the tooltip any more - use
1928     // SetToolTip(NULL) for this
1929 }
1930
1931 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1932 {
1933     if ( m_tooltip != tooltip )
1934     {
1935         if ( m_tooltip )
1936             delete m_tooltip;
1937
1938         m_tooltip = tooltip;
1939     }
1940 }
1941
1942 #endif // wxUSE_TOOLTIPS
1943
1944 // ----------------------------------------------------------------------------
1945 // constraints and sizers
1946 // ----------------------------------------------------------------------------
1947
1948 #if wxUSE_CONSTRAINTS
1949
1950 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1951 {
1952     if ( m_constraints )
1953     {
1954         UnsetConstraints(m_constraints);
1955         delete m_constraints;
1956     }
1957     m_constraints = constraints;
1958     if ( m_constraints )
1959     {
1960         // Make sure other windows know they're part of a 'meaningful relationship'
1961         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1962             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1963         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1964             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1965         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1966             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1967         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1968             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1969         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1970             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1971         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1972             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1973         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1974             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1975         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1976             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1977     }
1978 }
1979
1980 // This removes any dangling pointers to this window in other windows'
1981 // constraintsInvolvedIn lists.
1982 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1983 {
1984     if ( c )
1985     {
1986         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1987             c->left.GetOtherWindow()->RemoveConstraintReference(this);
1988         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1989             c->top.GetOtherWindow()->RemoveConstraintReference(this);
1990         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1991             c->right.GetOtherWindow()->RemoveConstraintReference(this);
1992         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1993             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1994         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1995             c->width.GetOtherWindow()->RemoveConstraintReference(this);
1996         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1997             c->height.GetOtherWindow()->RemoveConstraintReference(this);
1998         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1999             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
2000         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
2001             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
2002     }
2003 }
2004
2005 // Back-pointer to other windows we're involved with, so if we delete this
2006 // window, we must delete any constraints we're involved with.
2007 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
2008 {
2009     if ( !m_constraintsInvolvedIn )
2010         m_constraintsInvolvedIn = new wxWindowList;
2011     if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
2012         m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
2013 }
2014
2015 // REMOVE back-pointer to other windows we're involved with.
2016 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
2017 {
2018     if ( m_constraintsInvolvedIn )
2019         m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
2020 }
2021
2022 // Reset any constraints that mention this window
2023 void wxWindowBase::DeleteRelatedConstraints()
2024 {
2025     if ( m_constraintsInvolvedIn )
2026     {
2027         wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
2028         while (node)
2029         {
2030             wxWindow *win = node->GetData();
2031             wxLayoutConstraints *constr = win->GetConstraints();
2032
2033             // Reset any constraints involving this window
2034             if ( constr )
2035             {
2036                 constr->left.ResetIfWin(this);
2037                 constr->top.ResetIfWin(this);
2038                 constr->right.ResetIfWin(this);
2039                 constr->bottom.ResetIfWin(this);
2040                 constr->width.ResetIfWin(this);
2041                 constr->height.ResetIfWin(this);
2042                 constr->centreX.ResetIfWin(this);
2043                 constr->centreY.ResetIfWin(this);
2044             }
2045
2046             wxWindowList::compatibility_iterator next = node->GetNext();
2047             m_constraintsInvolvedIn->Erase(node);
2048             node = next;
2049         }
2050
2051         delete m_constraintsInvolvedIn;
2052         m_constraintsInvolvedIn = NULL;
2053     }
2054 }
2055
2056 #endif // wxUSE_CONSTRAINTS
2057
2058 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
2059 {
2060     if ( sizer == m_windowSizer)
2061         return;
2062
2063     if ( m_windowSizer )
2064     {
2065         m_windowSizer->SetContainingWindow(NULL);
2066
2067         if ( deleteOld )
2068             delete m_windowSizer;
2069     }
2070
2071     m_windowSizer = sizer;
2072     if ( m_windowSizer )
2073     {
2074         m_windowSizer->SetContainingWindow((wxWindow *)this);
2075     }
2076
2077     SetAutoLayout(m_windowSizer != NULL);
2078 }
2079
2080 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
2081 {
2082     SetSizer( sizer, deleteOld );
2083     sizer->SetSizeHints( (wxWindow*) this );
2084 }
2085
2086
2087 void wxWindowBase::SetContainingSizer(wxSizer* sizer)
2088 {
2089     // adding a window to a sizer twice is going to result in fatal and
2090     // hard to debug problems later because when deleting the second
2091     // associated wxSizerItem we're going to dereference a dangling
2092     // pointer; so try to detect this as early as possible
2093     wxASSERT_MSG( !sizer || m_containingSizer != sizer,
2094                   wxT("Adding a window to the same sizer twice?") );
2095
2096     m_containingSizer = sizer;
2097 }
2098
2099 #if wxUSE_CONSTRAINTS
2100
2101 void wxWindowBase::SatisfyConstraints()
2102 {
2103     wxLayoutConstraints *constr = GetConstraints();
2104     bool wasOk = constr && constr->AreSatisfied();
2105
2106     ResetConstraints();   // Mark all constraints as unevaluated
2107
2108     int noChanges = 1;
2109
2110     // if we're a top level panel (i.e. our parent is frame/dialog), our
2111     // own constraints will never be satisfied any more unless we do it
2112     // here
2113     if ( wasOk )
2114     {
2115         while ( noChanges > 0 )
2116         {
2117             LayoutPhase1(&noChanges);
2118         }
2119     }
2120
2121     LayoutPhase2(&noChanges);
2122 }
2123
2124 #endif // wxUSE_CONSTRAINTS
2125
2126 bool wxWindowBase::Layout()
2127 {
2128     // If there is a sizer, use it instead of the constraints
2129     if ( GetSizer() )
2130     {
2131         int w = 0, h = 0;
2132         GetVirtualSize(&w, &h);
2133         GetSizer()->SetDimension( 0, 0, w, h );
2134     }
2135 #if wxUSE_CONSTRAINTS
2136     else
2137     {
2138         SatisfyConstraints(); // Find the right constraints values
2139         SetConstraintSizes(); // Recursively set the real window sizes
2140     }
2141 #endif
2142
2143     return true;
2144 }
2145
2146 void wxWindowBase::InternalOnSize(wxSizeEvent& event)
2147 {
2148     if ( GetAutoLayout() )
2149         Layout();
2150
2151     event.Skip();
2152 }
2153
2154 #if wxUSE_CONSTRAINTS
2155
2156 // first phase of the constraints evaluation: set our own constraints
2157 bool wxWindowBase::LayoutPhase1(int *noChanges)
2158 {
2159     wxLayoutConstraints *constr = GetConstraints();
2160
2161     return !constr || constr->SatisfyConstraints(this, noChanges);
2162 }
2163
2164 // second phase: set the constraints for our children
2165 bool wxWindowBase::LayoutPhase2(int *noChanges)
2166 {
2167     *noChanges = 0;
2168
2169     // Layout children
2170     DoPhase(1);
2171
2172     // Layout grand children
2173     DoPhase(2);
2174
2175     return true;
2176 }
2177
2178 // Do a phase of evaluating child constraints
2179 bool wxWindowBase::DoPhase(int phase)
2180 {
2181     // the list containing the children for which the constraints are already
2182     // set correctly
2183     wxWindowList succeeded;
2184
2185     // the max number of iterations we loop before concluding that we can't set
2186     // the constraints
2187     static const int maxIterations = 500;
2188
2189     for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
2190     {
2191         int noChanges = 0;
2192
2193         // loop over all children setting their constraints
2194         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2195               node;
2196               node = node->GetNext() )
2197         {
2198             wxWindow *child = node->GetData();
2199             if ( child->IsTopLevel() )
2200             {
2201                 // top level children are not inside our client area
2202                 continue;
2203             }
2204
2205             if ( !child->GetConstraints() || succeeded.Find(child) )
2206             {
2207                 // this one is either already ok or nothing we can do about it
2208                 continue;
2209             }
2210
2211             int tempNoChanges = 0;
2212             bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
2213                                       : child->LayoutPhase2(&tempNoChanges);
2214             noChanges += tempNoChanges;
2215
2216             if ( success )
2217             {
2218                 succeeded.Append(child);
2219             }
2220         }
2221
2222         if ( !noChanges )
2223         {
2224             // constraints are set
2225             break;
2226         }
2227     }
2228
2229     return true;
2230 }
2231
2232 void wxWindowBase::ResetConstraints()
2233 {
2234     wxLayoutConstraints *constr = GetConstraints();
2235     if ( constr )
2236     {
2237         constr->left.SetDone(false);
2238         constr->top.SetDone(false);
2239         constr->right.SetDone(false);
2240         constr->bottom.SetDone(false);
2241         constr->width.SetDone(false);
2242         constr->height.SetDone(false);
2243         constr->centreX.SetDone(false);
2244         constr->centreY.SetDone(false);
2245     }
2246
2247     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2248     while (node)
2249     {
2250         wxWindow *win = node->GetData();
2251         if ( !win->IsTopLevel() )
2252             win->ResetConstraints();
2253         node = node->GetNext();
2254     }
2255 }
2256
2257 // Need to distinguish between setting the 'fake' size for windows and sizers,
2258 // and setting the real values.
2259 void wxWindowBase::SetConstraintSizes(bool recurse)
2260 {
2261     wxLayoutConstraints *constr = GetConstraints();
2262     if ( constr && constr->AreSatisfied() )
2263     {
2264         int x = constr->left.GetValue();
2265         int y = constr->top.GetValue();
2266         int w = constr->width.GetValue();
2267         int h = constr->height.GetValue();
2268
2269         if ( (constr->width.GetRelationship() != wxAsIs ) ||
2270              (constr->height.GetRelationship() != wxAsIs) )
2271         {
2272             SetSize(x, y, w, h);
2273         }
2274         else
2275         {
2276             // If we don't want to resize this window, just move it...
2277             Move(x, y);
2278         }
2279     }
2280     else if ( constr )
2281     {
2282         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
2283                    GetClassInfo()->GetClassName(),
2284                    GetName().c_str());
2285     }
2286
2287     if ( recurse )
2288     {
2289         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2290         while (node)
2291         {
2292             wxWindow *win = node->GetData();
2293             if ( !win->IsTopLevel() && win->GetConstraints() )
2294                 win->SetConstraintSizes();
2295             node = node->GetNext();
2296         }
2297     }
2298 }
2299
2300 // Only set the size/position of the constraint (if any)
2301 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
2302 {
2303     wxLayoutConstraints *constr = GetConstraints();
2304     if ( constr )
2305     {
2306         if ( x != wxDefaultCoord )
2307         {
2308             constr->left.SetValue(x);
2309             constr->left.SetDone(true);
2310         }
2311         if ( y != wxDefaultCoord )
2312         {
2313             constr->top.SetValue(y);
2314             constr->top.SetDone(true);
2315         }
2316         if ( w != wxDefaultCoord )
2317         {
2318             constr->width.SetValue(w);
2319             constr->width.SetDone(true);
2320         }
2321         if ( h != wxDefaultCoord )
2322         {
2323             constr->height.SetValue(h);
2324             constr->height.SetDone(true);
2325         }
2326     }
2327 }
2328
2329 void wxWindowBase::MoveConstraint(int x, int y)
2330 {
2331     wxLayoutConstraints *constr = GetConstraints();
2332     if ( constr )
2333     {
2334         if ( x != wxDefaultCoord )
2335         {
2336             constr->left.SetValue(x);
2337             constr->left.SetDone(true);
2338         }
2339         if ( y != wxDefaultCoord )
2340         {
2341             constr->top.SetValue(y);
2342             constr->top.SetDone(true);
2343         }
2344     }
2345 }
2346
2347 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
2348 {
2349     wxLayoutConstraints *constr = GetConstraints();
2350     if ( constr )
2351     {
2352         *w = constr->width.GetValue();
2353         *h = constr->height.GetValue();
2354     }
2355     else
2356         GetSize(w, h);
2357 }
2358
2359 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
2360 {
2361     wxLayoutConstraints *constr = GetConstraints();
2362     if ( constr )
2363     {
2364         *w = constr->width.GetValue();
2365         *h = constr->height.GetValue();
2366     }
2367     else
2368         GetClientSize(w, h);
2369 }
2370
2371 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
2372 {
2373     wxLayoutConstraints *constr = GetConstraints();
2374     if ( constr )
2375     {
2376         *x = constr->left.GetValue();
2377         *y = constr->top.GetValue();
2378     }
2379     else
2380         GetPosition(x, y);
2381 }
2382
2383 #endif // wxUSE_CONSTRAINTS
2384
2385 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
2386 {
2387     // don't do it for the dialogs/frames - they float independently of their
2388     // parent
2389     if ( !IsTopLevel() )
2390     {
2391         wxWindow *parent = GetParent();
2392         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
2393         {
2394             wxPoint pt(parent->GetClientAreaOrigin());
2395             x += pt.x;
2396             y += pt.y;
2397         }
2398     }
2399 }
2400
2401 // ----------------------------------------------------------------------------
2402 // Update UI processing
2403 // ----------------------------------------------------------------------------
2404
2405 void wxWindowBase::UpdateWindowUI(long flags)
2406 {
2407     wxUpdateUIEvent event(GetId());
2408     event.SetEventObject(this);
2409
2410     if ( GetEventHandler()->ProcessEvent(event) )
2411     {
2412         DoUpdateWindowUI(event);
2413     }
2414
2415     if (flags & wxUPDATE_UI_RECURSE)
2416     {
2417         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2418         while (node)
2419         {
2420             wxWindow* child = (wxWindow*) node->GetData();
2421             child->UpdateWindowUI(flags);
2422             node = node->GetNext();
2423         }
2424     }
2425 }
2426
2427 // do the window-specific processing after processing the update event
2428 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
2429 {
2430     if ( event.GetSetEnabled() )
2431         Enable(event.GetEnabled());
2432
2433     if ( event.GetSetShown() )
2434         Show(event.GetShown());
2435 }
2436
2437 // ----------------------------------------------------------------------------
2438 // dialog units translations
2439 // ----------------------------------------------------------------------------
2440
2441 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
2442 {
2443     int charWidth = GetCharWidth();
2444     int charHeight = GetCharHeight();
2445     wxPoint pt2 = wxDefaultPosition;
2446     if (pt.x != wxDefaultCoord)
2447         pt2.x = (int) ((pt.x * 4) / charWidth);
2448     if (pt.y != wxDefaultCoord)
2449         pt2.y = (int) ((pt.y * 8) / charHeight);
2450
2451     return pt2;
2452 }
2453
2454 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
2455 {
2456     int charWidth = GetCharWidth();
2457     int charHeight = GetCharHeight();
2458     wxPoint pt2 = wxDefaultPosition;
2459     if (pt.x != wxDefaultCoord)
2460         pt2.x = (int) ((pt.x * charWidth) / 4);
2461     if (pt.y != wxDefaultCoord)
2462         pt2.y = (int) ((pt.y * charHeight) / 8);
2463
2464     return pt2;
2465 }
2466
2467 // ----------------------------------------------------------------------------
2468 // event handlers
2469 // ----------------------------------------------------------------------------
2470
2471 // propagate the colour change event to the subwindows
2472 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& WXUNUSED(event))
2473 {
2474     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2475     while ( node )
2476     {
2477         // Only propagate to non-top-level windows
2478         wxWindow *win = node->GetData();
2479         if ( !win->IsTopLevel() )
2480         {
2481             wxSysColourChangedEvent event2;
2482             event2.SetEventObject(win);
2483             win->GetEventHandler()->ProcessEvent(event2);
2484         }
2485
2486         node = node->GetNext();
2487     }
2488
2489     Refresh();
2490 }
2491
2492 // the default action is to populate dialog with data when it's created,
2493 // and nudge the UI into displaying itself correctly in case
2494 // we've turned the wxUpdateUIEvents frequency down low.
2495 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
2496 {
2497     TransferDataToWindow();
2498
2499     // Update the UI at this point
2500     UpdateWindowUI(wxUPDATE_UI_RECURSE);
2501 }
2502
2503 // ----------------------------------------------------------------------------
2504 // menu-related functions
2505 // ----------------------------------------------------------------------------
2506
2507 #if wxUSE_MENUS
2508
2509 bool wxWindowBase::PopupMenu(wxMenu *menu, int x, int y)
2510 {
2511     wxCHECK_MSG( menu, false, "can't popup NULL menu" );
2512
2513     wxCurrentPopupMenu = menu;
2514     const bool rc = DoPopupMenu(menu, x, y);
2515     wxCurrentPopupMenu = NULL;
2516
2517     return rc;
2518 }
2519
2520 // this is used to pass the id of the selected item from the menu event handler
2521 // to the main function itself
2522 //
2523 // it's ok to use a global here as there can be at most one popup menu shown at
2524 // any time
2525 static int gs_popupMenuSelection = wxID_NONE;
2526
2527 void wxWindowBase::InternalOnPopupMenu(wxCommandEvent& event)
2528 {
2529     // store the id in a global variable where we'll retrieve it from later
2530     gs_popupMenuSelection = event.GetId();
2531 }
2532
2533 void wxWindowBase::InternalOnPopupMenuUpdate(wxUpdateUIEvent& WXUNUSED(event))
2534 {
2535     // nothing to do but do not skip it
2536 }
2537
2538 int
2539 wxWindowBase::DoGetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y)
2540 {
2541     gs_popupMenuSelection = wxID_NONE;
2542
2543     Connect(wxEVT_COMMAND_MENU_SELECTED,
2544             wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2545             NULL,
2546             this);
2547
2548     // it is common to construct the menu passed to this function dynamically
2549     // using some fixed range of ids which could clash with the ids used
2550     // elsewhere in the program, which could result in some menu items being
2551     // unintentionally disabled or otherwise modified by update UI handlers
2552     // elsewhere in the program code and this is difficult to avoid in the
2553     // program itself, so instead we just temporarily suspend UI updating while
2554     // this menu is shown
2555     Connect(wxEVT_UPDATE_UI,
2556             wxUpdateUIEventHandler(wxWindowBase::InternalOnPopupMenuUpdate),
2557             NULL,
2558             this);
2559
2560     PopupMenu(&menu, x, y);
2561
2562     Disconnect(wxEVT_UPDATE_UI,
2563                wxUpdateUIEventHandler(wxWindowBase::InternalOnPopupMenuUpdate),
2564                NULL,
2565                this);
2566     Disconnect(wxEVT_COMMAND_MENU_SELECTED,
2567                wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2568                NULL,
2569                this);
2570
2571     return gs_popupMenuSelection;
2572 }
2573
2574 #endif // wxUSE_MENUS
2575
2576 // methods for drawing the sizers in a visible way: this is currently only
2577 // enabled for "full debug" builds with wxDEBUG_LEVEL==2 as it doesn't work
2578 // that well and also because we don't want to leave it enabled in default
2579 // builds used for production
2580 #if wxDEBUG_LEVEL > 1
2581
2582 static void DrawSizers(wxWindowBase *win);
2583
2584 static void DrawBorder(wxWindowBase *win, const wxRect& rect, bool fill, const wxPen* pen)
2585 {
2586     wxClientDC dc((wxWindow *)win);
2587     dc.SetPen(*pen);
2588     dc.SetBrush(fill ? wxBrush(pen->GetColour(), wxBRUSHSTYLE_CROSSDIAG_HATCH) :
2589                        *wxTRANSPARENT_BRUSH);
2590     dc.DrawRectangle(rect.Deflate(1, 1));
2591 }
2592
2593 static void DrawSizer(wxWindowBase *win, wxSizer *sizer)
2594 {
2595     const wxSizerItemList& items = sizer->GetChildren();
2596     for ( wxSizerItemList::const_iterator i = items.begin(),
2597                                         end = items.end();
2598           i != end;
2599           ++i )
2600     {
2601         wxSizerItem *item = *i;
2602         if ( item->IsSizer() )
2603         {
2604             DrawBorder(win, item->GetRect().Deflate(2), false, wxRED_PEN);
2605             DrawSizer(win, item->GetSizer());
2606         }
2607         else if ( item->IsSpacer() )
2608         {
2609             DrawBorder(win, item->GetRect().Deflate(2), true, wxBLUE_PEN);
2610         }
2611         else if ( item->IsWindow() )
2612         {
2613             DrawSizers(item->GetWindow());
2614         }
2615         else
2616             wxFAIL_MSG("inconsistent wxSizerItem status!");
2617     }
2618 }
2619
2620 static void DrawSizers(wxWindowBase *win)
2621 {
2622     DrawBorder(win, win->GetClientSize(), false, wxGREEN_PEN);
2623
2624     wxSizer *sizer = win->GetSizer();
2625     if ( sizer )
2626     {
2627         DrawSizer(win, sizer);
2628     }
2629     else // no sizer, still recurse into the children
2630     {
2631         const wxWindowList& children = win->GetChildren();
2632         for ( wxWindowList::const_iterator i = children.begin(),
2633                                          end = children.end();
2634               i != end;
2635               ++i )
2636         {
2637             DrawSizers(*i);
2638         }
2639
2640         // show all kind of sizes of this window; see the "window sizing" topic
2641         // overview for more info about the various differences:
2642         wxSize fullSz = win->GetSize();
2643         wxSize clientSz = win->GetClientSize();
2644         wxSize bestSz = win->GetBestSize();
2645         wxSize minSz = win->GetMinSize();
2646         wxSize maxSz = win->GetMaxSize();
2647         wxSize virtualSz = win->GetVirtualSize();
2648
2649         wxMessageOutputDebug dbgout;
2650         dbgout.Printf(
2651             "%-10s => fullsz=%4d;%-4d  clientsz=%4d;%-4d  bestsz=%4d;%-4d  minsz=%4d;%-4d  maxsz=%4d;%-4d virtualsz=%4d;%-4d\n",
2652             win->GetName(),
2653             fullSz.x, fullSz.y,
2654             clientSz.x, clientSz.y,
2655             bestSz.x, bestSz.y,
2656             minSz.x, minSz.y,
2657             maxSz.x, maxSz.y,
2658             virtualSz.x, virtualSz.y);
2659     }
2660 }
2661
2662 #endif // wxDEBUG_LEVEL
2663
2664 // process special middle clicks
2665 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
2666 {
2667     if ( event.ControlDown() && event.AltDown() )
2668     {
2669 #if wxDEBUG_LEVEL > 1
2670         // Ctrl-Alt-Shift-mclick makes the sizers visible in debug builds
2671         if ( event.ShiftDown() )
2672         {
2673             DrawSizers(this);
2674         }
2675         else
2676 #endif // __WXDEBUG__
2677         {
2678             // just Ctrl-Alt-middle click shows information about wx version
2679             ::wxInfoMessageBox((wxWindow*)this);
2680         }
2681     }
2682     else
2683     {
2684         event.Skip();
2685     }
2686 }
2687
2688 // ----------------------------------------------------------------------------
2689 // accessibility
2690 // ----------------------------------------------------------------------------
2691
2692 #if wxUSE_ACCESSIBILITY
2693 void wxWindowBase::SetAccessible(wxAccessible* accessible)
2694 {
2695     if (m_accessible && (accessible != m_accessible))
2696         delete m_accessible;
2697     m_accessible = accessible;
2698     if (m_accessible)
2699         m_accessible->SetWindow((wxWindow*) this);
2700 }
2701
2702 // Returns the accessible object, creating if necessary.
2703 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2704 {
2705     if (!m_accessible)
2706         m_accessible = CreateAccessible();
2707     return m_accessible;
2708 }
2709
2710 // Override to create a specific accessible object.
2711 wxAccessible* wxWindowBase::CreateAccessible()
2712 {
2713     return new wxWindowAccessible((wxWindow*) this);
2714 }
2715
2716 #endif
2717
2718 // ----------------------------------------------------------------------------
2719 // list classes implementation
2720 // ----------------------------------------------------------------------------
2721
2722 #if wxUSE_STL
2723
2724 #include "wx/listimpl.cpp"
2725 WX_DEFINE_LIST(wxWindowList)
2726
2727 #else // !wxUSE_STL
2728
2729 void wxWindowListNode::DeleteData()
2730 {
2731     delete (wxWindow *)GetData();
2732 }
2733
2734 #endif // wxUSE_STL/!wxUSE_STL
2735
2736 // ----------------------------------------------------------------------------
2737 // borders
2738 // ----------------------------------------------------------------------------
2739
2740 wxBorder wxWindowBase::GetBorder(long flags) const
2741 {
2742     wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2743     if ( border == wxBORDER_DEFAULT )
2744     {
2745         border = GetDefaultBorder();
2746     }
2747     else if ( border == wxBORDER_THEME )
2748     {
2749         border = GetDefaultBorderForControl();
2750     }
2751
2752     return border;
2753 }
2754
2755 wxBorder wxWindowBase::GetDefaultBorder() const
2756 {
2757     return wxBORDER_NONE;
2758 }
2759
2760 // ----------------------------------------------------------------------------
2761 // hit testing
2762 // ----------------------------------------------------------------------------
2763
2764 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2765 {
2766     // here we just check if the point is inside the window or not
2767
2768     // check the top and left border first
2769     bool outside = x < 0 || y < 0;
2770     if ( !outside )
2771     {
2772         // check the right and bottom borders too
2773         wxSize size = GetSize();
2774         outside = x >= size.x || y >= size.y;
2775     }
2776
2777     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2778 }
2779
2780 // ----------------------------------------------------------------------------
2781 // mouse capture
2782 // ----------------------------------------------------------------------------
2783
2784 struct WXDLLEXPORT wxWindowNext
2785 {
2786     wxWindow *win;
2787     wxWindowNext *next;
2788 } *wxWindowBase::ms_winCaptureNext = NULL;
2789 wxWindow *wxWindowBase::ms_winCaptureCurrent = NULL;
2790 bool wxWindowBase::ms_winCaptureChanging = false;
2791
2792 void wxWindowBase::CaptureMouse()
2793 {
2794     wxLogTrace(wxT("mousecapture"), wxT("CaptureMouse(%p)"), static_cast<void*>(this));
2795
2796     wxASSERT_MSG( !ms_winCaptureChanging, wxT("recursive CaptureMouse call?") );
2797
2798     ms_winCaptureChanging = true;
2799
2800     wxWindow *winOld = GetCapture();
2801     if ( winOld )
2802     {
2803         ((wxWindowBase*) winOld)->DoReleaseMouse();
2804
2805         // save it on stack
2806         wxWindowNext *item = new wxWindowNext;
2807         item->win = winOld;
2808         item->next = ms_winCaptureNext;
2809         ms_winCaptureNext = item;
2810     }
2811     //else: no mouse capture to save
2812
2813     DoCaptureMouse();
2814     ms_winCaptureCurrent = (wxWindow*)this;
2815
2816     ms_winCaptureChanging = false;
2817 }
2818
2819 void wxWindowBase::ReleaseMouse()
2820 {
2821     wxLogTrace(wxT("mousecapture"), wxT("ReleaseMouse(%p)"), static_cast<void*>(this));
2822
2823     wxASSERT_MSG( !ms_winCaptureChanging, wxT("recursive ReleaseMouse call?") );
2824
2825     wxASSERT_MSG( GetCapture() == this,
2826                   "attempt to release mouse, but this window hasn't captured it" );
2827     wxASSERT_MSG( ms_winCaptureCurrent == this,
2828                   "attempt to release mouse, but this window hasn't captured it" );
2829
2830     ms_winCaptureChanging = true;
2831
2832     DoReleaseMouse();
2833     ms_winCaptureCurrent = NULL;
2834
2835     if ( ms_winCaptureNext )
2836     {
2837         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2838         ms_winCaptureCurrent = ms_winCaptureNext->win;
2839
2840         wxWindowNext *item = ms_winCaptureNext;
2841         ms_winCaptureNext = item->next;
2842         delete item;
2843     }
2844     //else: stack is empty, no previous capture
2845
2846     ms_winCaptureChanging = false;
2847
2848     wxLogTrace(wxT("mousecapture"),
2849         (const wxChar *) wxT("After ReleaseMouse() mouse is captured by %p"),
2850         static_cast<void*>(GetCapture()));
2851 }
2852
2853 static void DoNotifyWindowAboutCaptureLost(wxWindow *win)
2854 {
2855     wxMouseCaptureLostEvent event(win->GetId());
2856     event.SetEventObject(win);
2857     if ( !win->GetEventHandler()->ProcessEvent(event) )
2858     {
2859         // windows must handle this event, otherwise the app wouldn't behave
2860         // correctly if it loses capture unexpectedly; see the discussion here:
2861         // http://sourceforge.net/tracker/index.php?func=detail&aid=1153662&group_id=9863&atid=109863
2862         // http://article.gmane.org/gmane.comp.lib.wxwidgets.devel/82376
2863         wxFAIL_MSG( wxT("window that captured the mouse didn't process wxEVT_MOUSE_CAPTURE_LOST") );
2864     }
2865 }
2866
2867 /* static */
2868 void wxWindowBase::NotifyCaptureLost()
2869 {
2870     // don't do anything if capture lost was expected, i.e. resulted from
2871     // a wx call to ReleaseMouse or CaptureMouse:
2872     if ( ms_winCaptureChanging )
2873         return;
2874
2875     // if the capture was lost unexpectedly, notify every window that has
2876     // capture (on stack or current) about it and clear the stack:
2877
2878     if ( ms_winCaptureCurrent )
2879     {
2880         DoNotifyWindowAboutCaptureLost(ms_winCaptureCurrent);
2881         ms_winCaptureCurrent = NULL;
2882     }
2883
2884     while ( ms_winCaptureNext )
2885     {
2886         wxWindowNext *item = ms_winCaptureNext;
2887         ms_winCaptureNext = item->next;
2888
2889         DoNotifyWindowAboutCaptureLost(item->win);
2890
2891         delete item;
2892     }
2893 }
2894
2895 #if wxUSE_HOTKEY
2896
2897 bool
2898 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2899                              int WXUNUSED(modifiers),
2900                              int WXUNUSED(keycode))
2901 {
2902     // not implemented
2903     return false;
2904 }
2905
2906 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2907 {
2908     // not implemented
2909     return false;
2910 }
2911
2912 #endif // wxUSE_HOTKEY
2913
2914 // ----------------------------------------------------------------------------
2915 // event processing
2916 // ----------------------------------------------------------------------------
2917
2918 bool wxWindowBase::TryBefore(wxEvent& event)
2919 {
2920 #if wxUSE_VALIDATORS
2921     // Can only use the validator of the window which
2922     // is receiving the event
2923     if ( event.GetEventObject() == this )
2924     {
2925         wxValidator * const validator = GetValidator();
2926         if ( validator && validator->ProcessEventHere(event) )
2927         {
2928             return true;
2929         }
2930     }
2931 #endif // wxUSE_VALIDATORS
2932
2933     return wxEvtHandler::TryBefore(event);
2934 }
2935
2936 bool wxWindowBase::TryAfter(wxEvent& event)
2937 {
2938     // carry on up the parent-child hierarchy if the propagation count hasn't
2939     // reached zero yet
2940     if ( event.ShouldPropagate() )
2941     {
2942         // honour the requests to stop propagation at this window: this is
2943         // used by the dialogs, for example, to prevent processing the events
2944         // from the dialog controls in the parent frame which rarely, if ever,
2945         // makes sense
2946         if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
2947         {
2948             wxWindow *parent = GetParent();
2949             if ( parent && !parent->IsBeingDeleted() )
2950             {
2951                 wxPropagateOnce propagateOnce(event);
2952
2953                 return parent->GetEventHandler()->ProcessEvent(event);
2954             }
2955         }
2956     }
2957
2958     return wxEvtHandler::TryAfter(event);
2959 }
2960
2961 // ----------------------------------------------------------------------------
2962 // window relationships
2963 // ----------------------------------------------------------------------------
2964
2965 wxWindow *wxWindowBase::DoGetSibling(WindowOrder order) const
2966 {
2967     wxCHECK_MSG( GetParent(), NULL,
2968                     wxT("GetPrev/NextSibling() don't work for TLWs!") );
2969
2970     wxWindowList& siblings = GetParent()->GetChildren();
2971     wxWindowList::compatibility_iterator i = siblings.Find((wxWindow *)this);
2972     wxCHECK_MSG( i, NULL, wxT("window not a child of its parent?") );
2973
2974     if ( order == OrderBefore )
2975         i = i->GetPrevious();
2976     else // OrderAfter
2977         i = i->GetNext();
2978
2979     return i ? i->GetData() : NULL;
2980 }
2981
2982 // ----------------------------------------------------------------------------
2983 // keyboard navigation
2984 // ----------------------------------------------------------------------------
2985
2986 // Navigates in the specified direction inside this window
2987 bool wxWindowBase::DoNavigateIn(int flags)
2988 {
2989 #ifdef wxHAS_NATIVE_TAB_TRAVERSAL
2990     // native code doesn't process our wxNavigationKeyEvents anyhow
2991     wxUnusedVar(flags);
2992     return false;
2993 #else // !wxHAS_NATIVE_TAB_TRAVERSAL
2994     wxNavigationKeyEvent eventNav;
2995     wxWindow *focused = FindFocus();
2996     eventNav.SetCurrentFocus(focused);
2997     eventNav.SetEventObject(focused);
2998     eventNav.SetFlags(flags);
2999     return GetEventHandler()->ProcessEvent(eventNav);
3000 #endif // wxHAS_NATIVE_TAB_TRAVERSAL/!wxHAS_NATIVE_TAB_TRAVERSAL
3001 }
3002
3003 bool wxWindowBase::HandleAsNavigationKey(const wxKeyEvent& event)
3004 {
3005     if ( event.GetKeyCode() != WXK_TAB )
3006         return false;
3007
3008     int flags = wxNavigationKeyEvent::FromTab;
3009
3010     if ( event.ShiftDown() )
3011         flags |= wxNavigationKeyEvent::IsBackward;
3012     else
3013         flags |= wxNavigationKeyEvent::IsForward;
3014
3015     if ( event.ControlDown() )
3016         flags |= wxNavigationKeyEvent::WinChange;
3017
3018     Navigate(flags);
3019     return true;
3020 }
3021
3022 void wxWindowBase::DoMoveInTabOrder(wxWindow *win, WindowOrder move)
3023 {
3024     // check that we're not a top level window
3025     wxCHECK_RET( GetParent(),
3026                     wxT("MoveBefore/AfterInTabOrder() don't work for TLWs!") );
3027
3028     // detect the special case when we have nothing to do anyhow and when the
3029     // code below wouldn't work
3030     if ( win == this )
3031         return;
3032
3033     // find the target window in the siblings list
3034     wxWindowList& siblings = GetParent()->GetChildren();
3035     wxWindowList::compatibility_iterator i = siblings.Find(win);
3036     wxCHECK_RET( i, wxT("MoveBefore/AfterInTabOrder(): win is not a sibling") );
3037
3038     // unfortunately, when wxUSE_STL == 1 DetachNode() is not implemented so we
3039     // can't just move the node around
3040     wxWindow *self = (wxWindow *)this;
3041     siblings.DeleteObject(self);
3042     if ( move == OrderAfter )
3043     {
3044         i = i->GetNext();
3045     }
3046
3047     if ( i )
3048     {
3049         siblings.Insert(i, self);
3050     }
3051     else // OrderAfter and win was the last sibling
3052     {
3053         siblings.Append(self);
3054     }
3055 }
3056
3057 // ----------------------------------------------------------------------------
3058 // focus handling
3059 // ----------------------------------------------------------------------------
3060
3061 /*static*/ wxWindow* wxWindowBase::FindFocus()
3062 {
3063     wxWindowBase *win = DoFindFocus();
3064     return win ? win->GetMainWindowOfCompositeControl() : NULL;
3065 }
3066
3067 bool wxWindowBase::HasFocus() const
3068 {
3069     wxWindowBase *win = DoFindFocus();
3070     return win == this ||
3071            win == wxConstCast(this, wxWindowBase)->GetMainWindowOfCompositeControl();
3072 }
3073
3074 // ----------------------------------------------------------------------------
3075 // drag and drop
3076 // ----------------------------------------------------------------------------
3077
3078 #if wxUSE_DRAG_AND_DROP && !defined(__WXMSW__)
3079
3080 namespace
3081 {
3082
3083 class DragAcceptFilesTarget : public wxFileDropTarget
3084 {
3085 public:
3086     DragAcceptFilesTarget(wxWindowBase *win) : m_win(win) {}
3087
3088     virtual bool OnDropFiles(wxCoord x, wxCoord y,
3089                              const wxArrayString& filenames)
3090     {
3091         wxDropFilesEvent event(wxEVT_DROP_FILES,
3092                                filenames.size(),
3093                                wxCArrayString(filenames).Release());
3094         event.SetEventObject(m_win);
3095         event.m_pos.x = x;
3096         event.m_pos.y = y;
3097
3098         return m_win->HandleWindowEvent(event);
3099     }
3100
3101 private:
3102     wxWindowBase * const m_win;
3103
3104     wxDECLARE_NO_COPY_CLASS(DragAcceptFilesTarget);
3105 };
3106
3107
3108 } // anonymous namespace
3109
3110 // Generic version of DragAcceptFiles(). It works by installing a simple
3111 // wxFileDropTarget-to-EVT_DROP_FILES adaptor and therefore cannot be used
3112 // together with explicit SetDropTarget() calls.
3113 void wxWindowBase::DragAcceptFiles(bool accept)
3114 {
3115     if ( accept )
3116     {
3117         wxASSERT_MSG( !GetDropTarget(),
3118                       "cannot use DragAcceptFiles() and SetDropTarget() together" );
3119         SetDropTarget(new DragAcceptFilesTarget(this));
3120     }
3121     else
3122     {
3123         SetDropTarget(NULL);
3124     }
3125 }
3126
3127 #endif // wxUSE_DRAG_AND_DROP && !defined(__WXMSW__)
3128
3129 // ----------------------------------------------------------------------------
3130 // global functions
3131 // ----------------------------------------------------------------------------
3132
3133 wxWindow* wxGetTopLevelParent(wxWindow *win)
3134 {
3135     while ( win && !win->IsTopLevel() )
3136          win = win->GetParent();
3137
3138     return win;
3139 }
3140
3141 #if wxUSE_ACCESSIBILITY
3142 // ----------------------------------------------------------------------------
3143 // accessible object for windows
3144 // ----------------------------------------------------------------------------
3145
3146 // Can return either a child object, or an integer
3147 // representing the child element, starting from 1.
3148 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
3149 {
3150     wxASSERT( GetWindow() != NULL );
3151     if (!GetWindow())
3152         return wxACC_FAIL;
3153
3154     return wxACC_NOT_IMPLEMENTED;
3155 }
3156
3157 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
3158 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
3159 {
3160     wxASSERT( GetWindow() != NULL );
3161     if (!GetWindow())
3162         return wxACC_FAIL;
3163
3164     wxWindow* win = NULL;
3165     if (elementId == 0)
3166     {
3167         win = GetWindow();
3168     }
3169     else
3170     {
3171         if (elementId <= (int) GetWindow()->GetChildren().GetCount())
3172         {
3173             win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
3174         }
3175         else
3176             return wxACC_FAIL;
3177     }
3178     if (win)
3179     {
3180         rect = win->GetRect();
3181         if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
3182             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
3183         return wxACC_OK;
3184     }
3185
3186     return wxACC_NOT_IMPLEMENTED;
3187 }
3188
3189 // Navigates from fromId to toId/toObject.
3190 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
3191                              int* WXUNUSED(toId), wxAccessible** toObject)
3192 {
3193     wxASSERT( GetWindow() != NULL );
3194     if (!GetWindow())
3195         return wxACC_FAIL;
3196
3197     switch (navDir)
3198     {
3199     case wxNAVDIR_FIRSTCHILD:
3200         {
3201             if (GetWindow()->GetChildren().GetCount() == 0)
3202                 return wxACC_FALSE;
3203             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
3204             *toObject = childWindow->GetOrCreateAccessible();
3205
3206             return wxACC_OK;
3207         }
3208     case wxNAVDIR_LASTCHILD:
3209         {
3210             if (GetWindow()->GetChildren().GetCount() == 0)
3211                 return wxACC_FALSE;
3212             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
3213             *toObject = childWindow->GetOrCreateAccessible();
3214
3215             return wxACC_OK;
3216         }
3217     case wxNAVDIR_RIGHT:
3218     case wxNAVDIR_DOWN:
3219     case wxNAVDIR_NEXT:
3220         {
3221             wxWindowList::compatibility_iterator node =
3222                 wxWindowList::compatibility_iterator();
3223             if (fromId == 0)
3224             {
3225                 // Can't navigate to sibling of this window
3226                 // if we're a top-level window.
3227                 if (!GetWindow()->GetParent())
3228                     return wxACC_NOT_IMPLEMENTED;
3229
3230                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
3231             }
3232             else
3233             {
3234                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
3235                     node = GetWindow()->GetChildren().Item(fromId-1);
3236             }
3237
3238             if (node && node->GetNext())
3239             {
3240                 wxWindow* nextWindow = node->GetNext()->GetData();
3241                 *toObject = nextWindow->GetOrCreateAccessible();
3242                 return wxACC_OK;
3243             }
3244             else
3245                 return wxACC_FALSE;
3246         }
3247     case wxNAVDIR_LEFT:
3248     case wxNAVDIR_UP:
3249     case wxNAVDIR_PREVIOUS:
3250         {
3251             wxWindowList::compatibility_iterator node =
3252                 wxWindowList::compatibility_iterator();
3253             if (fromId == 0)
3254             {
3255                 // Can't navigate to sibling of this window
3256                 // if we're a top-level window.
3257                 if (!GetWindow()->GetParent())
3258                     return wxACC_NOT_IMPLEMENTED;
3259
3260                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
3261             }
3262             else
3263             {
3264                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
3265                     node = GetWindow()->GetChildren().Item(fromId-1);
3266             }
3267
3268             if (node && node->GetPrevious())
3269             {
3270                 wxWindow* previousWindow = node->GetPrevious()->GetData();
3271                 *toObject = previousWindow->GetOrCreateAccessible();
3272                 return wxACC_OK;
3273             }
3274             else
3275                 return wxACC_FALSE;
3276         }
3277     }
3278
3279     return wxACC_NOT_IMPLEMENTED;
3280 }
3281
3282 // Gets the name of the specified object.
3283 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
3284 {
3285     wxASSERT( GetWindow() != NULL );
3286     if (!GetWindow())
3287         return wxACC_FAIL;
3288
3289     wxString title;
3290
3291     // If a child, leave wxWidgets to call the function on the actual
3292     // child object.
3293     if (childId > 0)
3294         return wxACC_NOT_IMPLEMENTED;
3295
3296     // This will eventually be replaced by specialised
3297     // accessible classes, one for each kind of wxWidgets
3298     // control or window.
3299 #if wxUSE_BUTTON
3300     if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
3301         title = ((wxButton*) GetWindow())->GetLabel();
3302     else
3303 #endif
3304         title = GetWindow()->GetName();
3305
3306     if (!title.empty())
3307     {
3308         *name = title;
3309         return wxACC_OK;
3310     }
3311     else
3312         return wxACC_NOT_IMPLEMENTED;
3313 }
3314
3315 // Gets the number of children.
3316 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
3317 {
3318     wxASSERT( GetWindow() != NULL );
3319     if (!GetWindow())
3320         return wxACC_FAIL;
3321
3322     *childId = (int) GetWindow()->GetChildren().GetCount();
3323     return wxACC_OK;
3324 }
3325
3326 // Gets the specified child (starting from 1).
3327 // If *child is NULL and return value is wxACC_OK,
3328 // this means that the child is a simple element and
3329 // not an accessible object.
3330 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
3331 {
3332     wxASSERT( GetWindow() != NULL );
3333     if (!GetWindow())
3334         return wxACC_FAIL;
3335
3336     if (childId == 0)
3337     {
3338         *child = this;
3339         return wxACC_OK;
3340     }
3341
3342     if (childId > (int) GetWindow()->GetChildren().GetCount())
3343         return wxACC_FAIL;
3344
3345     wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
3346     *child = childWindow->GetOrCreateAccessible();
3347     if (*child)
3348         return wxACC_OK;
3349     else
3350         return wxACC_FAIL;
3351 }
3352
3353 // Gets the parent, or NULL.
3354 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
3355 {
3356     wxASSERT( GetWindow() != NULL );
3357     if (!GetWindow())
3358         return wxACC_FAIL;
3359
3360     wxWindow* parentWindow = GetWindow()->GetParent();
3361     if (!parentWindow)
3362     {
3363         *parent = NULL;
3364         return wxACC_OK;
3365     }
3366     else
3367     {
3368         *parent = parentWindow->GetOrCreateAccessible();
3369         if (*parent)
3370             return wxACC_OK;
3371         else
3372             return wxACC_FAIL;
3373     }
3374 }
3375
3376 // Performs the default action. childId is 0 (the action for this object)
3377 // or > 0 (the action for a child).
3378 // Return wxACC_NOT_SUPPORTED if there is no default action for this
3379 // window (e.g. an edit control).
3380 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
3381 {
3382     wxASSERT( GetWindow() != NULL );
3383     if (!GetWindow())
3384         return wxACC_FAIL;
3385
3386     return wxACC_NOT_IMPLEMENTED;
3387 }
3388
3389 // Gets the default action for this object (0) or > 0 (the action for a child).
3390 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
3391 // string if there is no action.
3392 // The retrieved string describes the action that is performed on an object,
3393 // not what the object does as a result. For example, a toolbar button that prints
3394 // a document has a default action of "Press" rather than "Prints the current document."
3395 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
3396 {
3397     wxASSERT( GetWindow() != NULL );
3398     if (!GetWindow())
3399         return wxACC_FAIL;
3400
3401     return wxACC_NOT_IMPLEMENTED;
3402 }
3403
3404 // Returns the description for this object or a child.
3405 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
3406 {
3407     wxASSERT( GetWindow() != NULL );
3408     if (!GetWindow())
3409         return wxACC_FAIL;
3410
3411     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3412     if (!ht.empty())
3413     {
3414         *description = ht;
3415         return wxACC_OK;
3416     }
3417     return wxACC_NOT_IMPLEMENTED;
3418 }
3419
3420 // Returns help text for this object or a child, similar to tooltip text.
3421 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
3422 {
3423     wxASSERT( GetWindow() != NULL );
3424     if (!GetWindow())
3425         return wxACC_FAIL;
3426
3427     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3428     if (!ht.empty())
3429     {
3430         *helpText = ht;
3431         return wxACC_OK;
3432     }
3433     return wxACC_NOT_IMPLEMENTED;
3434 }
3435
3436 // Returns the keyboard shortcut for this object or child.
3437 // Return e.g. ALT+K
3438 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
3439 {
3440     wxASSERT( GetWindow() != NULL );
3441     if (!GetWindow())
3442         return wxACC_FAIL;
3443
3444     return wxACC_NOT_IMPLEMENTED;
3445 }
3446
3447 // Returns a role constant.
3448 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
3449 {
3450     wxASSERT( GetWindow() != NULL );
3451     if (!GetWindow())
3452         return wxACC_FAIL;
3453
3454     // If a child, leave wxWidgets to call the function on the actual
3455     // child object.
3456     if (childId > 0)
3457         return wxACC_NOT_IMPLEMENTED;
3458
3459     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3460         return wxACC_NOT_IMPLEMENTED;
3461 #if wxUSE_STATUSBAR
3462     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3463         return wxACC_NOT_IMPLEMENTED;
3464 #endif
3465 #if wxUSE_TOOLBAR
3466     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3467         return wxACC_NOT_IMPLEMENTED;
3468 #endif
3469
3470     //*role = wxROLE_SYSTEM_CLIENT;
3471     *role = wxROLE_SYSTEM_CLIENT;
3472     return wxACC_OK;
3473
3474     #if 0
3475     return wxACC_NOT_IMPLEMENTED;
3476     #endif
3477 }
3478
3479 // Returns a state constant.
3480 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
3481 {
3482     wxASSERT( GetWindow() != NULL );
3483     if (!GetWindow())
3484         return wxACC_FAIL;
3485
3486     // If a child, leave wxWidgets to call the function on the actual
3487     // child object.
3488     if (childId > 0)
3489         return wxACC_NOT_IMPLEMENTED;
3490
3491     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3492         return wxACC_NOT_IMPLEMENTED;
3493
3494 #if wxUSE_STATUSBAR
3495     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3496         return wxACC_NOT_IMPLEMENTED;
3497 #endif
3498 #if wxUSE_TOOLBAR
3499     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3500         return wxACC_NOT_IMPLEMENTED;
3501 #endif
3502
3503     *state = 0;
3504     return wxACC_OK;
3505
3506     #if 0
3507     return wxACC_NOT_IMPLEMENTED;
3508     #endif
3509 }
3510
3511 // Returns a localized string representing the value for the object
3512 // or child.
3513 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
3514 {
3515     wxASSERT( GetWindow() != NULL );
3516     if (!GetWindow())
3517         return wxACC_FAIL;
3518
3519     return wxACC_NOT_IMPLEMENTED;
3520 }
3521
3522 // Selects the object or child.
3523 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
3524 {
3525     wxASSERT( GetWindow() != NULL );
3526     if (!GetWindow())
3527         return wxACC_FAIL;
3528
3529     return wxACC_NOT_IMPLEMENTED;
3530 }
3531
3532 // Gets the window with the keyboard focus.
3533 // If childId is 0 and child is NULL, no object in
3534 // this subhierarchy has the focus.
3535 // If this object has the focus, child should be 'this'.
3536 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
3537 {
3538     wxASSERT( GetWindow() != NULL );
3539     if (!GetWindow())
3540         return wxACC_FAIL;
3541
3542     return wxACC_NOT_IMPLEMENTED;
3543 }
3544
3545 #if wxUSE_VARIANT
3546 // Gets a variant representing the selected children
3547 // of this object.
3548 // Acceptable values:
3549 // - a null variant (IsNull() returns true)
3550 // - a list variant (GetType() == wxT("list")
3551 // - an integer representing the selected child element,
3552 //   or 0 if this object is selected (GetType() == wxT("long")
3553 // - a "void*" pointer to a wxAccessible child object
3554 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
3555 {
3556     wxASSERT( GetWindow() != NULL );
3557     if (!GetWindow())
3558         return wxACC_FAIL;
3559
3560     return wxACC_NOT_IMPLEMENTED;
3561 }
3562 #endif // wxUSE_VARIANT
3563
3564 #endif // wxUSE_ACCESSIBILITY
3565
3566 // ----------------------------------------------------------------------------
3567 // RTL support
3568 // ----------------------------------------------------------------------------
3569
3570 wxCoord
3571 wxWindowBase::AdjustForLayoutDirection(wxCoord x,
3572                                        wxCoord width,
3573                                        wxCoord widthTotal) const
3574 {
3575     if ( GetLayoutDirection() == wxLayout_RightToLeft )
3576     {
3577         x = widthTotal - x - width;
3578     }
3579
3580     return x;
3581 }
3582
3583