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