src/common/wincmn.cpp

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