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