src/common/wincmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/window.cpp
   3 // Purpose:     common (to all ports) wxWindow functions
   4 // Author:      Julian Smart, Vadim Zeitlin
   5 // Modified by:
   6 // Created:     13/07/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWidgets team
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/string.h"
  29     #include "wx/log.h"
  30     #include "wx/intl.h"
  31     #include "wx/frame.h"
  32     #include "wx/window.h"
  33     #include "wx/control.h"
  34     #include "wx/checkbox.h"
  35     #include "wx/radiobut.h"
  36     #include "wx/statbox.h"
  37     #include "wx/textctrl.h"
  38     #include "wx/settings.h"
  39     #include "wx/dialog.h"
  40     #include "wx/msgdlg.h"
  41     #include "wx/statusbr.h"
  42     #include "wx/toolbar.h"
  43     #include "wx/dcclient.h"
  44     #include "wx/scrolbar.h"
  45     #include "wx/layout.h"
  46     #include "wx/sizer.h"
  47     #include "wx/menu.h"
  48 #endif //WX_PRECOMP
  49
  50 #if wxUSE_DRAG_AND_DROP
  51     #include "wx/dnd.h"
  52 #endif // wxUSE_DRAG_AND_DROP
  53
  54 #if wxUSE_ACCESSIBILITY
  55     #include "wx/access.h"
  56 #endif
  57
  58 #if wxUSE_HELP
  59     #include "wx/cshelp.h"
  60 #endif // wxUSE_HELP
  61
  62 #if wxUSE_TOOLTIPS
  63     #include "wx/tooltip.h"
  64 #endif // wxUSE_TOOLTIPS
  65
  66 #if wxUSE_CARET
  67     #include "wx/caret.h"
  68 #endif // wxUSE_CARET
  69
  70 #if wxUSE_SYSTEM_OPTIONS
  71     #include "wx/sysopt.h"
  72 #endif
  73
  74 // For reporting compile- and runtime version of GTK+ in the ctrl+alt+mclick dialog.
  75 // The gtk includes don't pull any other headers in, at least not on my system - MR
  76 #ifdef __WXGTK__
  77     #ifdef __WXGTK20__
  78         #include <gtk/gtkversion.h>
  79     #else
  80         #include <gtk/gtkfeatures.h>
  81     #endif
  82 #endif
  83
  84 #include "wx/platinfo.h"
  85
  86 // Windows List
  87 WXDLLIMPEXP_DATA_CORE(wxWindowList) wxTopLevelWindows;
  88
  89 // globals
  90 #if wxUSE_MENUS
  91 wxMenu *wxCurrentPopupMenu = NULL;
  92 #endif // wxUSE_MENUS
  93
  94 // ----------------------------------------------------------------------------
  95 // static data
  96 // ----------------------------------------------------------------------------
  97
  98
  99 IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
 100
 101 // ----------------------------------------------------------------------------
 102 // event table
 103 // ----------------------------------------------------------------------------
 104
 105 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
 106     EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
 107     EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
 108     EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
 109
 110 #if wxUSE_HELP
 111     EVT_HELP(wxID_ANY, wxWindowBase::OnHelp)
 112 #endif // wxUSE_HELP
 113
 114 END_EVENT_TABLE()
 115
 116 // ============================================================================
 117 // implementation of the common functionality of the wxWindow class
 118 // ============================================================================
 119
 120 // ----------------------------------------------------------------------------
 121 // initialization
 122 // ----------------------------------------------------------------------------
 123
 124 // the default initialization
 125 wxWindowBase::wxWindowBase()
 126 {
 127     // no window yet, no parent nor children
 128     m_parent = (wxWindow *)NULL;
 129     m_windowId = wxID_ANY;
 130
 131     // no constraints on the minimal window size
 132     m_minWidth =
 133     m_maxWidth = wxDefaultCoord;
 134     m_minHeight =
 135     m_maxHeight = wxDefaultCoord;
 136
 137     // invalidiated cache value
 138     m_bestSizeCache = wxDefaultSize;
 139
 140     // window are created enabled and visible by default
 141     m_isShown =
 142     m_isEnabled = true;
 143
 144     // the default event handler is just this window
 145     m_eventHandler = this;
 146
 147 #if wxUSE_VALIDATORS
 148     // no validator
 149     m_windowValidator = (wxValidator *) NULL;
 150 #endif // wxUSE_VALIDATORS
 151
 152     // the colours/fonts are default for now, so leave m_font,
 153     // m_backgroundColour and m_foregroundColour uninitialized and set those
 154     m_hasBgCol =
 155     m_hasFgCol =
 156     m_hasFont = false;
 157     m_inheritBgCol =
 158     m_inheritFgCol =
 159     m_inheritFont = false;
 160
 161     // no style bits
 162     m_exStyle =
 163     m_windowStyle = 0;
 164
 165     m_backgroundStyle = wxBG_STYLE_SYSTEM;
 166
 167 #if wxUSE_CONSTRAINTS
 168     // no constraints whatsoever
 169     m_constraints = (wxLayoutConstraints *) NULL;
 170     m_constraintsInvolvedIn = (wxWindowList *) NULL;
 171 #endif // wxUSE_CONSTRAINTS
 172
 173     m_windowSizer = (wxSizer *) NULL;
 174     m_containingSizer = (wxSizer *) NULL;
 175     m_autoLayout = false;
 176
 177 #if wxUSE_DRAG_AND_DROP
 178     m_dropTarget = (wxDropTarget *)NULL;
 179 #endif // wxUSE_DRAG_AND_DROP
 180
 181 #if wxUSE_TOOLTIPS
 182     m_tooltip = (wxToolTip *)NULL;
 183 #endif // wxUSE_TOOLTIPS
 184
 185 #if wxUSE_CARET
 186     m_caret = (wxCaret *)NULL;
 187 #endif // wxUSE_CARET
 188
 189 #if wxUSE_PALETTE
 190     m_hasCustomPalette = false;
 191 #endif // wxUSE_PALETTE
 192
 193 #if wxUSE_ACCESSIBILITY
 194     m_accessible = NULL;
 195 #endif
 196
 197     m_virtualSize = wxDefaultSize;
 198
 199     m_scrollHelper = (wxScrollHelper *) NULL;
 200
 201     m_windowVariant = wxWINDOW_VARIANT_NORMAL;
 202 #if wxUSE_SYSTEM_OPTIONS
 203     if ( wxSystemOptions::HasOption(wxWINDOW_DEFAULT_VARIANT) )
 204     {
 205        m_windowVariant = (wxWindowVariant) wxSystemOptions::GetOptionInt( wxWINDOW_DEFAULT_VARIANT ) ;
 206     }
 207 #endif
 208
 209     // Whether we're using the current theme for this window (wxGTK only for now)
 210     m_themeEnabled = false;
 211
 212     // VZ: this one shouldn't exist...
 213     m_isBeingDeleted = false;
 214
 215     m_freezeCount = 0;
 216 }
 217
 218 // common part of window creation process
 219 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 220                               wxWindowID id,
 221                               const wxPoint& WXUNUSED(pos),
 222                               const wxSize& WXUNUSED(size),
 223                               long style,
 224                               const wxValidator& wxVALIDATOR_PARAM(validator),
 225                               const wxString& name)
 226 {
 227 #if wxUSE_STATBOX
 228     // wxGTK doesn't allow to create controls with static box as the parent so
 229     // this will result in a crash when the program is ported to wxGTK so warn
 230     // the user about it
 231
 232     // if you get this assert, the correct solution is to create the controls
 233     // as siblings of the static box
 234     wxASSERT_MSG( !parent || !wxDynamicCast(parent, wxStaticBox),
 235                   _T("wxStaticBox can't be used as a window parent!") );
 236 #endif // wxUSE_STATBOX
 237
 238     // ids are limited to 16 bits under MSW so if you care about portability,
 239     // it's not a good idea to use ids out of this range (and negative ids are
 240     // reserved for wxWidgets own usage)
 241     wxASSERT_MSG( id == wxID_ANY || (id >= 0 && id < 32767) ||
 242                   (id >= wxID_AUTO_LOWEST && id <= wxID_AUTO_HIGHEST),
 243                   _T("invalid id value") );
 244
 245     // generate a new id if the user doesn't care about it
 246     if ( id == wxID_ANY )
 247     {
 248         m_windowId = NewControlId();
 249     }
 250     else // valid id specified
 251     {
 252         m_windowId = id;
 253     }
 254
 255     // don't use SetWindowStyleFlag() here, this function should only be called
 256     // to change the flag after creation as it tries to reflect the changes in
 257     // flags by updating the window dynamically and we don't need this here
 258     m_windowStyle = style;
 259
 260     SetName(name);
 261     SetParent(parent);
 262
 263 #if wxUSE_VALIDATORS
 264     SetValidator(validator);
 265 #endif // wxUSE_VALIDATORS
 266
 267     // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
 268     // have it too - like this it's possible to set it only in the top level
 269     // dialog/frame and all children will inherit it by defult
 270     if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
 271     {
 272         SetExtraStyle(GetExtraStyle() | wxWS_EX_VALIDATE_RECURSIVELY);
 273     }
 274
 275     return true;
 276 }
 277
 278 bool wxWindowBase::ToggleWindowStyle(int flag)
 279 {
 280     wxASSERT_MSG( flag, _T("flags with 0 value can't be toggled") );
 281
 282     bool rc;
 283     long style = GetWindowStyleFlag();
 284     if ( style & flag )
 285     {
 286         style &= ~flag;
 287         rc = false;
 288     }
 289     else // currently off
 290     {
 291         style |= flag;
 292         rc = true;
 293     }
 294
 295     SetWindowStyleFlag(style);
 296
 297     return rc;
 298 }
 299
 300 // ----------------------------------------------------------------------------
 301 // destruction
 302 // ----------------------------------------------------------------------------
 303
 304 // common clean up
 305 wxWindowBase::~wxWindowBase()
 306 {
 307     wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
 308
 309     // FIXME if these 2 cases result from programming errors in the user code
 310     //       we should probably assert here instead of silently fixing them
 311
 312     // Just in case the window has been Closed, but we're then deleting
 313     // immediately: don't leave dangling pointers.
 314     wxPendingDelete.DeleteObject(this);
 315
 316     // Just in case we've loaded a top-level window via LoadNativeDialog but
 317     // we weren't a dialog class
 318     wxTopLevelWindows.DeleteObject((wxWindow*)this);
 319
 320 #if wxUSE_MENUS
 321     // The associated popup menu can still be alive, disassociate from it in
 322     // this case
 323     if ( wxCurrentPopupMenu && wxCurrentPopupMenu->GetInvokingWindow() == this )
 324         wxCurrentPopupMenu->SetInvokingWindow(NULL);
 325 #endif // wxUSE_MENUS
 326
 327     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 328
 329     // notify the parent about this window destruction
 330     if ( m_parent )
 331         m_parent->RemoveChild(this);
 332
 333 #if wxUSE_CARET
 334     delete m_caret;
 335 #endif // wxUSE_CARET
 336
 337 #if wxUSE_VALIDATORS
 338     delete m_windowValidator;
 339 #endif // wxUSE_VALIDATORS
 340
 341 #if wxUSE_CONSTRAINTS
 342     // Have to delete constraints/sizer FIRST otherwise sizers may try to look
 343     // at deleted windows as they delete themselves.
 344     DeleteRelatedConstraints();
 345
 346     if ( m_constraints )
 347     {
 348         // This removes any dangling pointers to this window in other windows'
 349         // constraintsInvolvedIn lists.
 350         UnsetConstraints(m_constraints);
 351         delete m_constraints;
 352         m_constraints = NULL;
 353     }
 354 #endif // wxUSE_CONSTRAINTS
 355
 356     if ( m_containingSizer )
 357         m_containingSizer->Detach( (wxWindow*)this );
 358
 359     delete m_windowSizer;
 360
 361 #if wxUSE_DRAG_AND_DROP
 362     delete m_dropTarget;
 363 #endif // wxUSE_DRAG_AND_DROP
 364
 365 #if wxUSE_TOOLTIPS
 366     delete m_tooltip;
 367 #endif // wxUSE_TOOLTIPS
 368
 369 #if wxUSE_ACCESSIBILITY
 370     delete m_accessible;
 371 #endif
 372
 373 #if wxUSE_HELP
 374     // NB: this has to be called unconditionally, because we don't know
 375     //     whether this window has associated help text or not
 376     wxHelpProvider *helpProvider = wxHelpProvider::Get();
 377     if ( helpProvider )
 378         helpProvider->RemoveHelp(this);
 379 #endif
 380 }
 381
 382 void wxWindowBase::SendDestroyEvent()
 383 {
 384     wxWindowDestroyEvent event;
 385     event.SetEventObject(this);
 386     event.SetId(GetId());
 387     GetEventHandler()->ProcessEvent(event);
 388 }
 389
 390 bool wxWindowBase::Destroy()
 391 {
 392     delete this;
 393
 394     return true;
 395 }
 396
 397 bool wxWindowBase::Close(bool force)
 398 {
 399     wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
 400     event.SetEventObject(this);
 401     event.SetCanVeto(!force);
 402
 403     // return false if window wasn't closed because the application vetoed the
 404     // close event
 405     return HandleWindowEvent(event) && !event.GetVeto();
 406 }
 407
 408 bool wxWindowBase::DestroyChildren()
 409 {
 410     wxWindowList::compatibility_iterator node;
 411     for ( ;; )
 412     {
 413         // we iterate until the list becomes empty
 414         node = GetChildren().GetFirst();
 415         if ( !node )
 416             break;
 417
 418         wxWindow *child = node->GetData();
 419
 420         // note that we really want to call delete and not ->Destroy() here
 421         // because we want to delete the child immediately, before we are
 422         // deleted, and delayed deletion would result in problems as our (top
 423         // level) child could outlive its parent
 424         delete child;
 425
 426         wxASSERT_MSG( !GetChildren().Find(child),
 427                       wxT("child didn't remove itself using RemoveChild()") );
 428     }
 429
 430     return true;
 431 }
 432
 433 // ----------------------------------------------------------------------------
 434 // size/position related methods
 435 // ----------------------------------------------------------------------------
 436
 437 // centre the window with respect to its parent in either (or both) directions
 438 void wxWindowBase::DoCentre(int dir)
 439 {
 440     wxCHECK_RET( !(dir & wxCENTRE_ON_SCREEN) && GetParent(),
 441                  _T("this method only implements centering child windows") );
 442
 443     SetSize(GetRect().CentreIn(GetParent()->GetClientSize(), dir));
 444 }
 445
 446 // fits the window around the children
 447 void wxWindowBase::Fit()
 448 {
 449     if ( !GetChildren().empty() )
 450     {
 451         SetSize(GetBestSize());
 452     }
 453     //else: do nothing if we have no children
 454 }
 455
 456 // fits virtual size (ie. scrolled area etc.) around children
 457 void wxWindowBase::FitInside()
 458 {
 459     if ( GetChildren().GetCount() > 0 )
 460     {
 461         SetVirtualSize( GetBestVirtualSize() );
 462     }
 463 }
 464
 465 // On Mac, scrollbars are explicitly children.
 466 #ifdef __WXMAC__
 467 static bool wxHasRealChildren(const wxWindowBase* win)
 468 {
 469     int realChildCount = 0;
 470
 471     for ( wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
 472           node;
 473           node = node->GetNext() )
 474     {
 475         wxWindow *win = node->GetData();
 476         if ( !win->IsTopLevel() && win->IsShown() && !win->IsKindOf(CLASSINFO(wxScrollBar)))
 477             realChildCount ++;
 478     }
 479     return (realChildCount > 0);
 480 }
 481 #endif
 482
 483 void wxWindowBase::InvalidateBestSize()
 484 {
 485     m_bestSizeCache = wxDefaultSize;
 486
 487     // parent's best size calculation may depend on its children's
 488     // as long as child window we are in is not top level window itself
 489     // (because the TLW size is never resized automatically)
 490     // so let's invalidate it as well to be safe:
 491     if (m_parent && !IsTopLevel())
 492         m_parent->InvalidateBestSize();
 493 }
 494
 495 // return the size best suited for the current window
 496 wxSize wxWindowBase::DoGetBestSize() const
 497 {
 498     wxSize best;
 499
 500     if ( m_windowSizer )
 501     {
 502         best = m_windowSizer->GetMinSize();
 503     }
 504 #if wxUSE_CONSTRAINTS
 505     else if ( m_constraints )
 506     {
 507         wxConstCast(this, wxWindowBase)->SatisfyConstraints();
 508
 509         // our minimal acceptable size is such that all our windows fit inside
 510         int maxX = 0,
 511             maxY = 0;
 512
 513         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 514               node;
 515               node = node->GetNext() )
 516         {
 517             wxLayoutConstraints *c = node->GetData()->GetConstraints();
 518             if ( !c )
 519             {
 520                 // it's not normal that we have an unconstrained child, but
 521                 // what can we do about it?
 522                 continue;
 523             }
 524
 525             int x = c->right.GetValue(),
 526                 y = c->bottom.GetValue();
 527
 528             if ( x > maxX )
 529                 maxX = x;
 530
 531             if ( y > maxY )
 532                 maxY = y;
 533
 534             // TODO: we must calculate the overlaps somehow, otherwise we
 535             //       will never return a size bigger than the current one :-(
 536         }
 537
 538         best = wxSize(maxX, maxY);
 539     }
 540 #endif // wxUSE_CONSTRAINTS
 541     else if ( !GetChildren().empty()
 542 #ifdef __WXMAC__
 543               && wxHasRealChildren(this)
 544 #endif
 545               )
 546     {
 547         // our minimal acceptable size is such that all our visible child
 548         // windows fit inside
 549         int maxX = 0,
 550             maxY = 0;
 551
 552         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 553               node;
 554               node = node->GetNext() )
 555         {
 556             wxWindow *win = node->GetData();
 557             if ( win->IsTopLevel()
 558                     || !win->IsShown()
 559 #if wxUSE_STATUSBAR
 560                         || wxDynamicCast(win, wxStatusBar)
 561 #endif // wxUSE_STATUSBAR
 562                )
 563             {
 564                 // dialogs and frames lie in different top level windows -
 565                 // don't deal with them here; as for the status bars, they
 566                 // don't lie in the client area at all
 567                 continue;
 568             }
 569
 570             int wx, wy, ww, wh;
 571             win->GetPosition(&wx, &wy);
 572
 573             // if the window hadn't been positioned yet, assume that it is in
 574             // the origin
 575             if ( wx == wxDefaultCoord )
 576                 wx = 0;
 577             if ( wy == wxDefaultCoord )
 578                 wy = 0;
 579
 580             win->GetSize(&ww, &wh);
 581             if ( wx + ww > maxX )
 582                 maxX = wx + ww;
 583             if ( wy + wh > maxY )
 584                 maxY = wy + wh;
 585         }
 586
 587         best = wxSize(maxX, maxY);
 588     }
 589     else // ! has children
 590     {
 591         // for a generic window there is no natural best size so, if the
 592         // minimal size is not set, use the current size but take care to
 593         // remember it as minimal size for the next time because our best size
 594         // should be constant: otherwise we could get into a situation when the
 595         // window is initially at some size, then expanded to a larger size and
 596         // then, when the containing window is shrunk back (because our initial
 597         // best size had been used for computing the parent min size), we can't
 598         // be shrunk back any more because our best size is now bigger
 599         wxSize size = GetMinSize();
 600         if ( !size.IsFullySpecified() )
 601         {
 602             size.SetDefaults(GetSize());
 603             wxConstCast(this, wxWindowBase)->SetMinSize(size);
 604         }
 605
 606         // return as-is, unadjusted by the client size difference.
 607         return size;
 608     }
 609
 610     // Add any difference between size and client size
 611     wxSize diff = GetSize() - GetClientSize();
 612     best.x += wxMax(0, diff.x);
 613     best.y += wxMax(0, diff.y);
 614
 615     return best;
 616 }
 617
 618 // helper of GetWindowBorderSize(): as many ports don't implement support for
 619 // wxSYS_BORDER/EDGE_X/Y metrics in their wxSystemSettings, use hard coded
 620 // fallbacks in this case
 621 static int wxGetMetricOrDefault(wxSystemMetric what)
 622 {
 623     int rc = wxSystemSettings::GetMetric(what);
 624     if ( rc == -1 )
 625     {
 626         switch ( what )
 627         {
 628             case wxSYS_BORDER_X:
 629             case wxSYS_BORDER_Y:
 630                 // 2D border is by default 1 pixel wide
 631                 rc = 1;
 632                 break;
 633
 634             case wxSYS_EDGE_X:
 635             case wxSYS_EDGE_Y:
 636                 // 3D borders are by default 2 pixels
 637                 rc = 2;
 638                 break;
 639
 640             default:
 641                 wxFAIL_MSG( _T("unexpected wxGetMetricOrDefault() argument") );
 642                 rc = 0;
 643         }
 644     }
 645
 646     return rc;
 647 }
 648
 649 wxSize wxWindowBase::GetWindowBorderSize() const
 650 {
 651     wxSize size;
 652
 653     switch ( GetBorder() )
 654     {
 655         case wxBORDER_NONE:
 656             // nothing to do, size is already (0, 0)
 657             break;
 658
 659         case wxBORDER_SIMPLE:
 660         case wxBORDER_STATIC:
 661             size.x = wxGetMetricOrDefault(wxSYS_BORDER_X);
 662             size.y = wxGetMetricOrDefault(wxSYS_BORDER_Y);
 663             break;
 664
 665         case wxBORDER_SUNKEN:
 666         case wxBORDER_RAISED:
 667             size.x = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_X),
 668                            wxGetMetricOrDefault(wxSYS_BORDER_X));
 669             size.y = wxMax(wxGetMetricOrDefault(wxSYS_EDGE_Y),
 670                            wxGetMetricOrDefault(wxSYS_BORDER_Y));
 671             break;
 672
 673         case wxBORDER_DOUBLE:
 674             size.x = wxGetMetricOrDefault(wxSYS_EDGE_X) +
 675                         wxGetMetricOrDefault(wxSYS_BORDER_X);
 676             size.y = wxGetMetricOrDefault(wxSYS_EDGE_Y) +
 677                         wxGetMetricOrDefault(wxSYS_BORDER_Y);
 678             break;
 679
 680         default:
 681             wxFAIL_MSG(_T("Unknown border style."));
 682             break;
 683     }
 684
 685     // we have borders on both sides
 686     return size*2;
 687 }
 688
 689 wxSize wxWindowBase::GetEffectiveMinSize() const
 690 {
 691     // merge the best size with the min size, giving priority to the min size
 692     wxSize min = GetMinSize();
 693     if (min.x == wxDefaultCoord || min.y == wxDefaultCoord)
 694     {
 695         wxSize best = GetBestSize();
 696         if (min.x == wxDefaultCoord) min.x =  best.x;
 697         if (min.y == wxDefaultCoord) min.y =  best.y;
 698     }
 699     return min;
 700 }
 701
 702
 703 void wxWindowBase::SetInitialSize(const wxSize& size)
 704 {
 705     // Set the min size to the size passed in.  This will usually either be
 706     // wxDefaultSize or the size passed to this window's ctor/Create function.
 707     SetMinSize(size);
 708
 709     // Merge the size with the best size if needed
 710     wxSize best = GetEffectiveMinSize();
 711
 712     // If the current size doesn't match then change it
 713     if (GetSize() != best)
 714         SetSize(best);
 715 }
 716
 717
 718 // by default the origin is not shifted
 719 wxPoint wxWindowBase::GetClientAreaOrigin() const
 720 {
 721     return wxPoint(0,0);
 722 }
 723
 724 wxSize wxWindowBase::ClientToWindowSize(const wxSize& size) const
 725 {
 726     const wxSize diff(GetSize() - GetClientSize());
 727
 728     return wxSize(size.x == -1 ? -1 : size.x + diff.x,
 729                   size.y == -1 ? -1 : size.y + diff.y);
 730 }
 731
 732 wxSize wxWindowBase::WindowToClientSize(const wxSize& size) const
 733 {
 734     const wxSize diff(GetSize() - GetClientSize());
 735
 736     return wxSize(size.x == -1 ? -1 : size.x - diff.x,
 737                   size.y == -1 ? -1 : size.y - diff.y);
 738 }
 739
 740 void wxWindowBase::SetWindowVariant( wxWindowVariant variant )
 741 {
 742     if ( m_windowVariant != variant )
 743     {
 744         m_windowVariant = variant;
 745
 746         DoSetWindowVariant(variant);
 747     }
 748 }
 749
 750 void wxWindowBase::DoSetWindowVariant( wxWindowVariant variant )
 751 {
 752     // adjust the font height to correspond to our new variant (notice that
 753     // we're only called if something really changed)
 754     wxFont font = GetFont();
 755     int size = font.GetPointSize();
 756     switch ( variant )
 757     {
 758         case wxWINDOW_VARIANT_NORMAL:
 759             break;
 760
 761         case wxWINDOW_VARIANT_SMALL:
 762             size *= 3;
 763             size /= 4;
 764             break;
 765
 766         case wxWINDOW_VARIANT_MINI:
 767             size *= 2;
 768             size /= 3;
 769             break;
 770
 771         case wxWINDOW_VARIANT_LARGE:
 772             size *= 5;
 773             size /= 4;
 774             break;
 775
 776         default:
 777             wxFAIL_MSG(_T("unexpected window variant"));
 778             break;
 779     }
 780
 781     font.SetPointSize(size);
 782     SetFont(font);
 783 }
 784
 785 void wxWindowBase::DoSetSizeHints( int minW, int minH,
 786                                    int maxW, int maxH,
 787                                    int WXUNUSED(incW), int WXUNUSED(incH) )
 788 {
 789     wxCHECK_RET( (minW == wxDefaultCoord || maxW == wxDefaultCoord || minW <= maxW) &&
 790                     (minH == wxDefaultCoord || maxH == wxDefaultCoord || minH <= maxH),
 791                  _T("min width/height must be less than max width/height!") );
 792
 793     m_minWidth = minW;
 794     m_maxWidth = maxW;
 795     m_minHeight = minH;
 796     m_maxHeight = maxH;
 797 }
 798
 799
 800 #if WXWIN_COMPATIBILITY_2_8
 801 void wxWindowBase::SetVirtualSizeHints(int WXUNUSED(minW), int WXUNUSED(minH),
 802                                        int WXUNUSED(maxW), int WXUNUSED(maxH))
 803 {
 804 }
 805
 806 void wxWindowBase::SetVirtualSizeHints(const wxSize& WXUNUSED(minsize),
 807                                        const wxSize& WXUNUSED(maxsize))
 808 {
 809 }
 810 #endif // WXWIN_COMPATIBILITY_2_8
 811
 812 void wxWindowBase::DoSetVirtualSize( int x, int y )
 813 {
 814     m_virtualSize = wxSize(x, y);
 815 }
 816
 817 wxSize wxWindowBase::DoGetVirtualSize() const
 818 {
 819     // we should use the entire client area so if it is greater than our
 820     // virtual size, expand it to fit (otherwise if the window is big enough we
 821     // wouldn't be using parts of it)
 822     wxSize size = GetClientSize();
 823     if ( m_virtualSize.x > size.x )
 824         size.x = m_virtualSize.x;
 825
 826     if ( m_virtualSize.y >= size.y )
 827         size.y = m_virtualSize.y;
 828
 829     return size;
 830 }
 831
 832 void wxWindowBase::DoGetScreenPosition(int *x, int *y) const
 833 {
 834     // screen position is the same as (0, 0) in client coords for non TLWs (and
 835     // TLWs override this method)
 836     if ( x )
 837         *x = 0;
 838     if ( y )
 839         *y = 0;
 840
 841     ClientToScreen(x, y);
 842 }
 843
 844 void wxWindowBase::SendSizeEvent(int flags)
 845 {
 846     wxSizeEvent event(GetSize(), GetId());
 847     event.SetEventObject(this);
 848     if ( flags & wxSEND_EVENT_POST )
 849         wxPostEvent(this, event);
 850     else
 851         HandleWindowEvent(event);
 852 }
 853
 854 void wxWindowBase::SendSizeEventToParent(int flags)
 855 {
 856     wxWindow * const parent = GetParent();
 857     if ( parent && !parent->IsBeingDeleted() )
 858         parent->SendSizeEvent(flags);
 859 }
 860
 861 // ----------------------------------------------------------------------------
 862 // show/hide/enable/disable the window
 863 // ----------------------------------------------------------------------------
 864
 865 bool wxWindowBase::Show(bool show)
 866 {
 867     if ( show != m_isShown )
 868     {
 869         m_isShown = show;
 870
 871         return true;
 872     }
 873     else
 874     {
 875         return false;
 876     }
 877 }
 878
 879 bool wxWindowBase::IsEnabled() const
 880 {
 881     return IsThisEnabled() && (IsTopLevel() || !GetParent() || GetParent()->IsEnabled());
 882 }
 883
 884 void wxWindowBase::NotifyWindowOnEnableChange(bool enabled)
 885 {
 886 #ifndef wxHAS_NATIVE_ENABLED_MANAGEMENT
 887     DoEnable(enabled);
 888 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 889
 890     OnEnabled(enabled);
 891
 892     // If we are top-level then the logic doesn't apply - otherwise
 893     // showing a modal dialog would result in total greying out (and ungreying
 894     // out later) of everything which would be really ugly
 895     if ( IsTopLevel() )
 896         return;
 897
 898     for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 899           node;
 900           node = node->GetNext() )
 901     {
 902         wxWindowBase * const child = node->GetData();
 903         if ( !child->IsTopLevel() && child->IsThisEnabled() )
 904             child->NotifyWindowOnEnableChange(enabled);
 905     }
 906 }
 907
 908 bool wxWindowBase::Enable(bool enable)
 909 {
 910     if ( enable == IsThisEnabled() )
 911         return false;
 912
 913     m_isEnabled = enable;
 914
 915 #ifdef wxHAS_NATIVE_ENABLED_MANAGEMENT
 916     DoEnable(enable);
 917 #else // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 918     wxWindowBase * const parent = GetParent();
 919     if( !IsTopLevel() && parent && !parent->IsEnabled() )
 920     {
 921         return true;
 922     }
 923 #endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
 924
 925     NotifyWindowOnEnableChange(enable);
 926
 927     return true;
 928 }
 929
 930 bool wxWindowBase::IsShownOnScreen() const
 931 {
 932     // A window is shown on screen if it itself is shown and so are all its
 933     // parents. But if a window is toplevel one, then its always visible on
 934     // screen if IsShown() returns true, even if it has a hidden parent.
 935     return IsShown() &&
 936            (IsTopLevel() || GetParent() == NULL || GetParent()->IsShownOnScreen());
 937 }
 938
 939 // ----------------------------------------------------------------------------
 940 // RTTI
 941 // ----------------------------------------------------------------------------
 942
 943 bool wxWindowBase::IsTopLevel() const
 944 {
 945     return false;
 946 }
 947
 948 // ----------------------------------------------------------------------------
 949 // Freeze/Thaw
 950 // ----------------------------------------------------------------------------
 951
 952 void wxWindowBase::Freeze()
 953 {
 954     if ( !m_freezeCount++ )
 955     {
 956         // physically freeze this window:
 957         DoFreeze();
 958
 959         // and recursively freeze all children:
 960         for ( wxWindowList::iterator i = GetChildren().begin();
 961               i != GetChildren().end(); ++i )
 962         {
 963             wxWindow *child = *i;
 964             if ( child->IsTopLevel() )
 965                 continue;
 966
 967             child->Freeze();
 968         }
 969     }
 970 }
 971
 972 void wxWindowBase::Thaw()
 973 {
 974     wxASSERT_MSG( m_freezeCount, "Thaw() without matching Freeze()" );
 975
 976     if ( !--m_freezeCount )
 977     {
 978         // recursively thaw all children:
 979         for ( wxWindowList::iterator i = GetChildren().begin();
 980               i != GetChildren().end(); ++i )
 981         {
 982             wxWindow *child = *i;
 983             if ( child->IsTopLevel() )
 984                 continue;
 985
 986             child->Thaw();
 987         }
 988
 989         // physically thaw this window:
 990         DoThaw();
 991     }
 992 }
 993
 994 // ----------------------------------------------------------------------------
 995 // reparenting the window
 996 // ----------------------------------------------------------------------------
 997
 998 void wxWindowBase::AddChild(wxWindowBase *child)
 999 {
1000     wxCHECK_RET( child, wxT("can't add a NULL child") );
1001
1002     // this should never happen and it will lead to a crash later if it does
1003     // because RemoveChild() will remove only one node from the children list
1004     // and the other(s) one(s) will be left with dangling pointers in them
1005     wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), _T("AddChild() called twice") );
1006
1007     GetChildren().Append((wxWindow*)child);
1008     child->SetParent(this);
1009
1010     // adding a child while frozen will assert when thawed, so freeze it as if
1011     // it had been already present when we were frozen
1012     if ( IsFrozen() && !child->IsTopLevel() )
1013         child->Freeze();
1014 }
1015
1016 void wxWindowBase::RemoveChild(wxWindowBase *child)
1017 {
1018     wxCHECK_RET( child, wxT("can't remove a NULL child") );
1019
1020     // removing a child while frozen may result in permanently frozen window
1021     // if used e.g. from Reparent(), so thaw it
1022     //
1023     // NB: IsTopLevel() doesn't return true any more when a TLW child is being
1024     //     removed from its ~wxWindowBase, so check for IsBeingDeleted() too
1025     if ( IsFrozen() && !child->IsBeingDeleted() && !child->IsTopLevel() )
1026         child->Thaw();
1027
1028     GetChildren().DeleteObject((wxWindow *)child);
1029     child->SetParent(NULL);
1030 }
1031
1032 bool wxWindowBase::Reparent(wxWindowBase *newParent)
1033 {
1034     wxWindow *oldParent = GetParent();
1035     if ( newParent == oldParent )
1036     {
1037         // nothing done
1038         return false;
1039     }
1040
1041     const bool oldEnabledState = IsEnabled();
1042
1043     // unlink this window from the existing parent.
1044     if ( oldParent )
1045     {
1046         oldParent->RemoveChild(this);
1047     }
1048     else
1049     {
1050         wxTopLevelWindows.DeleteObject((wxWindow *)this);
1051     }
1052
1053     // add it to the new one
1054     if ( newParent )
1055     {
1056         newParent->AddChild(this);
1057     }
1058     else
1059     {
1060         wxTopLevelWindows.Append((wxWindow *)this);
1061     }
1062
1063     // We need to notify window (and its subwindows) if by changing the parent
1064     // we also change our enabled/disabled status.
1065     const bool newEnabledState = IsEnabled();
1066     if ( newEnabledState != oldEnabledState )
1067     {
1068         NotifyWindowOnEnableChange(newEnabledState);
1069     }
1070
1071     return true;
1072 }
1073
1074 // ----------------------------------------------------------------------------
1075 // event handler stuff
1076 // ----------------------------------------------------------------------------
1077
1078 void wxWindowBase::PushEventHandler(wxEvtHandler *handler)
1079 {
1080     wxEvtHandler *handlerOld = GetEventHandler();
1081
1082     handler->SetNextHandler(handlerOld);
1083
1084     if ( handlerOld )
1085         GetEventHandler()->SetPreviousHandler(handler);
1086
1087     SetEventHandler(handler);
1088 }
1089
1090 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
1091 {
1092     wxEvtHandler *handlerA = GetEventHandler();
1093     if ( handlerA )
1094     {
1095         wxEvtHandler *handlerB = handlerA->GetNextHandler();
1096         handlerA->SetNextHandler((wxEvtHandler *)NULL);
1097
1098         if ( handlerB )
1099             handlerB->SetPreviousHandler((wxEvtHandler *)NULL);
1100         SetEventHandler(handlerB);
1101
1102         if ( deleteHandler )
1103         {
1104             delete handlerA;
1105             handlerA = (wxEvtHandler *)NULL;
1106         }
1107     }
1108
1109     return handlerA;
1110 }
1111
1112 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handler)
1113 {
1114     wxCHECK_MSG( handler, false, _T("RemoveEventHandler(NULL) called") );
1115
1116     wxEvtHandler *handlerPrev = NULL,
1117                  *handlerCur = GetEventHandler();
1118     while ( handlerCur )
1119     {
1120         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
1121
1122         if ( handlerCur == handler )
1123         {
1124             if ( handlerPrev )
1125             {
1126                 handlerPrev->SetNextHandler(handlerNext);
1127             }
1128             else
1129             {
1130                 SetEventHandler(handlerNext);
1131             }
1132
1133             if ( handlerNext )
1134             {
1135                 handlerNext->SetPreviousHandler ( handlerPrev );
1136             }
1137
1138             handler->SetNextHandler(NULL);
1139             handler->SetPreviousHandler(NULL);
1140
1141             return true;
1142         }
1143
1144         handlerPrev = handlerCur;
1145         handlerCur = handlerNext;
1146     }
1147
1148     wxFAIL_MSG( _T("where has the event handler gone?") );
1149
1150     return false;
1151 }
1152
1153 bool wxWindowBase::HandleWindowEvent(wxEvent& event) const
1154 {
1155     return GetEventHandler()->SafelyProcessEvent(event);
1156 }
1157
1158 // ----------------------------------------------------------------------------
1159 // colours, fonts &c
1160 // ----------------------------------------------------------------------------
1161
1162 void wxWindowBase::InheritAttributes()
1163 {
1164     const wxWindowBase * const parent = GetParent();
1165     if ( !parent )
1166         return;
1167
1168     // we only inherit attributes which had been explicitly set for the parent
1169     // which ensures that this only happens if the user really wants it and
1170     // not by default which wouldn't make any sense in modern GUIs where the
1171     // controls don't all use the same fonts (nor colours)
1172     if ( parent->m_inheritFont && !m_hasFont )
1173         SetFont(parent->GetFont());
1174
1175     // in addition, there is a possibility to explicitly forbid inheriting
1176     // colours at each class level by overriding ShouldInheritColours()
1177     if ( ShouldInheritColours() )
1178     {
1179         if ( parent->m_inheritFgCol && !m_hasFgCol )
1180             SetForegroundColour(parent->GetForegroundColour());
1181
1182         // inheriting (solid) background colour is wrong as it totally breaks
1183         // any kind of themed backgrounds
1184         //
1185         // instead, the controls should use the same background as their parent
1186         // (ideally by not drawing it at all)
1187 #if 0
1188         if ( parent->m_inheritBgCol && !m_hasBgCol )
1189             SetBackgroundColour(parent->GetBackgroundColour());
1190 #endif // 0
1191     }
1192 }
1193
1194 /* static */ wxVisualAttributes
1195 wxWindowBase::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1196 {
1197     // it is important to return valid values for all attributes from here,
1198     // GetXXX() below rely on this
1199     wxVisualAttributes attrs;
1200     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
1201     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
1202
1203     // On Smartphone/PocketPC, wxSYS_COLOUR_WINDOW is a better reflection of
1204     // the usual background colour than wxSYS_COLOUR_BTNFACE.
1205     // It's a pity that wxSYS_COLOUR_WINDOW isn't always a suitable background
1206     // colour on other platforms.
1207
1208 #if defined(__WXWINCE__) && (defined(__SMARTPHONE__) || defined(__POCKETPC__))
1209     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1210 #else
1211     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
1212 #endif
1213     return attrs;
1214 }
1215
1216 wxColour wxWindowBase::GetBackgroundColour() const
1217 {
1218     if ( !m_backgroundColour.IsOk() )
1219     {
1220         wxASSERT_MSG( !m_hasBgCol, _T("we have invalid explicit bg colour?") );
1221
1222         // get our default background colour
1223         wxColour colBg = GetDefaultAttributes().colBg;
1224
1225         // we must return some valid colour to avoid redoing this every time
1226         // and also to avoid surprizing the applications written for older
1227         // wxWidgets versions where GetBackgroundColour() always returned
1228         // something -- so give them something even if it doesn't make sense
1229         // for this window (e.g. it has a themed background)
1230         if ( !colBg.Ok() )
1231             colBg = GetClassDefaultAttributes().colBg;
1232
1233         return colBg;
1234     }
1235     else
1236         return m_backgroundColour;
1237 }
1238
1239 wxColour wxWindowBase::GetForegroundColour() const
1240 {
1241     // logic is the same as above
1242     if ( !m_hasFgCol && !m_foregroundColour.Ok() )
1243     {
1244         wxColour colFg = GetDefaultAttributes().colFg;
1245
1246         if ( !colFg.IsOk() )
1247             colFg = GetClassDefaultAttributes().colFg;
1248
1249         return colFg;
1250     }
1251     else
1252         return m_foregroundColour;
1253 }
1254
1255 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
1256 {
1257     if ( colour == m_backgroundColour )
1258         return false;
1259
1260     m_hasBgCol = colour.IsOk();
1261     if ( m_backgroundStyle != wxBG_STYLE_CUSTOM )
1262         m_backgroundStyle = m_hasBgCol ? wxBG_STYLE_COLOUR : wxBG_STYLE_SYSTEM;
1263
1264     m_inheritBgCol = m_hasBgCol;
1265     m_backgroundColour = colour;
1266     SetThemeEnabled( !m_hasBgCol && !m_foregroundColour.Ok() );
1267     return true;
1268 }
1269
1270 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
1271 {
1272     if (colour == m_foregroundColour )
1273         return false;
1274
1275     m_hasFgCol = colour.IsOk();
1276     m_inheritFgCol = m_hasFgCol;
1277     m_foregroundColour = colour;
1278     SetThemeEnabled( !m_hasFgCol && !m_backgroundColour.Ok() );
1279     return true;
1280 }
1281
1282 bool wxWindowBase::SetCursor(const wxCursor& cursor)
1283 {
1284     // setting an invalid cursor is ok, it means that we don't have any special
1285     // cursor
1286     if ( m_cursor.IsSameAs(cursor) )
1287     {
1288         // no change
1289         return false;
1290     }
1291
1292     m_cursor = cursor;
1293
1294     return true;
1295 }
1296
1297 wxFont wxWindowBase::GetFont() const
1298 {
1299     // logic is the same as in GetBackgroundColour()
1300     if ( !m_font.IsOk() )
1301     {
1302         wxASSERT_MSG( !m_hasFont, _T("we have invalid explicit font?") );
1303
1304         wxFont font = GetDefaultAttributes().font;
1305         if ( !font.IsOk() )
1306             font = GetClassDefaultAttributes().font;
1307
1308         return font;
1309     }
1310     else
1311         return m_font;
1312 }
1313
1314 bool wxWindowBase::SetFont(const wxFont& font)
1315 {
1316     if ( font == m_font )
1317     {
1318         // no change
1319         return false;
1320     }
1321
1322     m_font = font;
1323     m_hasFont = font.IsOk();
1324     m_inheritFont = m_hasFont;
1325
1326     InvalidateBestSize();
1327
1328     return true;
1329 }
1330
1331 #if wxUSE_PALETTE
1332
1333 void wxWindowBase::SetPalette(const wxPalette& pal)
1334 {
1335     m_hasCustomPalette = true;
1336     m_palette = pal;
1337
1338     // VZ: can anyone explain me what do we do here?
1339     wxWindowDC d((wxWindow *) this);
1340     d.SetPalette(pal);
1341 }
1342
1343 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
1344 {
1345     wxWindow *win = (wxWindow *)this;
1346     while ( win && !win->HasCustomPalette() )
1347     {
1348         win = win->GetParent();
1349     }
1350
1351     return win;
1352 }
1353
1354 #endif // wxUSE_PALETTE
1355
1356 #if wxUSE_CARET
1357 void wxWindowBase::SetCaret(wxCaret *caret)
1358 {
1359     if ( m_caret )
1360     {
1361         delete m_caret;
1362     }
1363
1364     m_caret = caret;
1365
1366     if ( m_caret )
1367     {
1368         wxASSERT_MSG( m_caret->GetWindow() == this,
1369                       wxT("caret should be created associated to this window") );
1370     }
1371 }
1372 #endif // wxUSE_CARET
1373
1374 #if wxUSE_VALIDATORS
1375 // ----------------------------------------------------------------------------
1376 // validators
1377 // ----------------------------------------------------------------------------
1378
1379 void wxWindowBase::SetValidator(const wxValidator& validator)
1380 {
1381     if ( m_windowValidator )
1382         delete m_windowValidator;
1383
1384     m_windowValidator = (wxValidator *)validator.Clone();
1385
1386     if ( m_windowValidator )
1387         m_windowValidator->SetWindow(this);
1388 }
1389 #endif // wxUSE_VALIDATORS
1390
1391 // ----------------------------------------------------------------------------
1392 // update region stuff
1393 // ----------------------------------------------------------------------------
1394
1395 wxRect wxWindowBase::GetUpdateClientRect() const
1396 {
1397     wxRegion rgnUpdate = GetUpdateRegion();
1398     rgnUpdate.Intersect(GetClientRect());
1399     wxRect rectUpdate = rgnUpdate.GetBox();
1400     wxPoint ptOrigin = GetClientAreaOrigin();
1401     rectUpdate.x -= ptOrigin.x;
1402     rectUpdate.y -= ptOrigin.y;
1403
1404     return rectUpdate;
1405 }
1406
1407 bool wxWindowBase::DoIsExposed(int x, int y) const
1408 {
1409     return m_updateRegion.Contains(x, y) != wxOutRegion;
1410 }
1411
1412 bool wxWindowBase::DoIsExposed(int x, int y, int w, int h) const
1413 {
1414     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
1415 }
1416
1417 void wxWindowBase::ClearBackground()
1418 {
1419     // wxGTK uses its own version, no need to add never used code
1420 #ifndef __WXGTK__
1421     wxClientDC dc((wxWindow *)this);
1422     wxBrush brush(GetBackgroundColour(), wxBRUSHSTYLE_SOLID);
1423     dc.SetBackground(brush);
1424     dc.Clear();
1425 #endif // __WXGTK__
1426 }
1427
1428 // ----------------------------------------------------------------------------
1429 // find child window by id or name
1430 // ----------------------------------------------------------------------------
1431
1432 wxWindow *wxWindowBase::FindWindow(long id) const
1433 {
1434     if ( id == m_windowId )
1435         return (wxWindow *)this;
1436
1437     wxWindowBase *res = (wxWindow *)NULL;
1438     wxWindowList::compatibility_iterator node;
1439     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1440     {
1441         wxWindowBase *child = node->GetData();
1442         res = child->FindWindow( id );
1443     }
1444
1445     return (wxWindow *)res;
1446 }
1447
1448 wxWindow *wxWindowBase::FindWindow(const wxString& name) const
1449 {
1450     if ( name == m_windowName )
1451         return (wxWindow *)this;
1452
1453     wxWindowBase *res = (wxWindow *)NULL;
1454     wxWindowList::compatibility_iterator node;
1455     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1456     {
1457         wxWindow *child = node->GetData();
1458         res = child->FindWindow(name);
1459     }
1460
1461     return (wxWindow *)res;
1462 }
1463
1464
1465 // find any window by id or name or label: If parent is non-NULL, look through
1466 // children for a label or title matching the specified string. If NULL, look
1467 // through all top-level windows.
1468 //
1469 // to avoid duplicating code we reuse the same helper function but with
1470 // different comparators
1471
1472 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1473                                 const wxString& label, long id);
1474
1475 static
1476 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1477                            long WXUNUSED(id))
1478 {
1479     return win->GetLabel() == label;
1480 }
1481
1482 static
1483 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1484                           long WXUNUSED(id))
1485 {
1486     return win->GetName() == label;
1487 }
1488
1489 static
1490 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1491                         long id)
1492 {
1493     return win->GetId() == id;
1494 }
1495
1496 // recursive helper for the FindWindowByXXX() functions
1497 static
1498 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1499                                   const wxString& label,
1500                                   long id,
1501                                   wxFindWindowCmp cmp)
1502 {
1503     if ( parent )
1504     {
1505         // see if this is the one we're looking for
1506         if ( (*cmp)(parent, label, id) )
1507             return (wxWindow *)parent;
1508
1509         // It wasn't, so check all its children
1510         for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
1511               node;
1512               node = node->GetNext() )
1513         {
1514             // recursively check each child
1515             wxWindow *win = (wxWindow *)node->GetData();
1516             wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1517             if (retwin)
1518                 return retwin;
1519         }
1520     }
1521
1522     // Not found
1523     return NULL;
1524 }
1525
1526 // helper for FindWindowByXXX()
1527 static
1528 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1529                              const wxString& label,
1530                              long id,
1531                              wxFindWindowCmp cmp)
1532 {
1533     if ( parent )
1534     {
1535         // just check parent and all its children
1536         return wxFindWindowRecursively(parent, label, id, cmp);
1537     }
1538
1539     // start at very top of wx's windows
1540     for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1541           node;
1542           node = node->GetNext() )
1543     {
1544         // recursively check each window & its children
1545         wxWindow *win = node->GetData();
1546         wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1547         if (retwin)
1548             return retwin;
1549     }
1550
1551     return NULL;
1552 }
1553
1554 /* static */
1555 wxWindow *
1556 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1557 {
1558     return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1559 }
1560
1561 /* static */
1562 wxWindow *
1563 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1564 {
1565     wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1566
1567     if ( !win )
1568     {
1569         // fall back to the label
1570         win = FindWindowByLabel(title, parent);
1571     }
1572
1573     return win;
1574 }
1575
1576 /* static */
1577 wxWindow *
1578 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1579 {
1580     return wxFindWindowHelper(parent, wxEmptyString, id, wxFindWindowCmpIds);
1581 }
1582
1583 // ----------------------------------------------------------------------------
1584 // dialog oriented functions
1585 // ----------------------------------------------------------------------------
1586
1587 void wxWindowBase::MakeModal(bool modal)
1588 {
1589     // Disable all other windows
1590     if ( IsTopLevel() )
1591     {
1592         wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1593         while (node)
1594         {
1595             wxWindow *win = node->GetData();
1596             if (win != this)
1597                 win->Enable(!modal);
1598
1599             node = node->GetNext();
1600         }
1601     }
1602 }
1603
1604 bool wxWindowBase::Validate()
1605 {
1606 #if wxUSE_VALIDATORS
1607     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1608
1609     wxWindowList::compatibility_iterator node;
1610     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1611     {
1612         wxWindowBase *child = node->GetData();
1613         wxValidator *validator = child->GetValidator();
1614         if ( validator && !validator->Validate((wxWindow *)this) )
1615         {
1616             return false;
1617         }
1618
1619         if ( recurse && !child->Validate() )
1620         {
1621             return false;
1622         }
1623     }
1624 #endif // wxUSE_VALIDATORS
1625
1626     return true;
1627 }
1628
1629 bool wxWindowBase::TransferDataToWindow()
1630 {
1631 #if wxUSE_VALIDATORS
1632     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1633
1634     wxWindowList::compatibility_iterator node;
1635     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1636     {
1637         wxWindowBase *child = node->GetData();
1638         wxValidator *validator = child->GetValidator();
1639         if ( validator && !validator->TransferToWindow() )
1640         {
1641             wxLogWarning(_("Could not transfer data to window"));
1642 #if wxUSE_LOG
1643             wxLog::FlushActive();
1644 #endif // wxUSE_LOG
1645
1646             return false;
1647         }
1648
1649         if ( recurse )
1650         {
1651             if ( !child->TransferDataToWindow() )
1652             {
1653                 // warning already given
1654                 return false;
1655             }
1656         }
1657     }
1658 #endif // wxUSE_VALIDATORS
1659
1660     return true;
1661 }
1662
1663 bool wxWindowBase::TransferDataFromWindow()
1664 {
1665 #if wxUSE_VALIDATORS
1666     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1667
1668     wxWindowList::compatibility_iterator node;
1669     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1670     {
1671         wxWindow *child = node->GetData();
1672         wxValidator *validator = child->GetValidator();
1673         if ( validator && !validator->TransferFromWindow() )
1674         {
1675             // nop warning here because the application is supposed to give
1676             // one itself - we don't know here what might have gone wrongly
1677
1678             return false;
1679         }
1680
1681         if ( recurse )
1682         {
1683             if ( !child->TransferDataFromWindow() )
1684             {
1685                 // warning already given
1686                 return false;
1687             }
1688         }
1689     }
1690 #endif // wxUSE_VALIDATORS
1691
1692     return true;
1693 }
1694
1695 void wxWindowBase::InitDialog()
1696 {
1697     wxInitDialogEvent event(GetId());
1698     event.SetEventObject( this );
1699     GetEventHandler()->ProcessEvent(event);
1700 }
1701
1702 // ----------------------------------------------------------------------------
1703 // context-sensitive help support
1704 // ----------------------------------------------------------------------------
1705
1706 #if wxUSE_HELP
1707
1708 // associate this help text with this window
1709 void wxWindowBase::SetHelpText(const wxString& text)
1710 {
1711     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1712     if ( helpProvider )
1713     {
1714         helpProvider->AddHelp(this, text);
1715     }
1716 }
1717
1718 #if WXWIN_COMPATIBILITY_2_8
1719 // associate this help text with all windows with the same id as this
1720 // one
1721 void wxWindowBase::SetHelpTextForId(const wxString& text)
1722 {
1723     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1724     if ( helpProvider )
1725     {
1726         helpProvider->AddHelp(GetId(), text);
1727     }
1728 }
1729 #endif // WXWIN_COMPATIBILITY_2_8
1730
1731 // get the help string associated with this window (may be empty)
1732 // default implementation forwards calls to the help provider
1733 wxString
1734 wxWindowBase::GetHelpTextAtPoint(const wxPoint & WXUNUSED(pt),
1735                                  wxHelpEvent::Origin WXUNUSED(origin)) const
1736 {
1737     wxString text;
1738     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1739     if ( helpProvider )
1740     {
1741         text = helpProvider->GetHelp(this);
1742     }
1743
1744     return text;
1745 }
1746
1747 // show help for this window
1748 void wxWindowBase::OnHelp(wxHelpEvent& event)
1749 {
1750     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1751     if ( helpProvider )
1752     {
1753         wxPoint pos = event.GetPosition();
1754         const wxHelpEvent::Origin origin = event.GetOrigin();
1755         if ( origin == wxHelpEvent::Origin_Keyboard )
1756         {
1757             // if the help event was generated from keyboard it shouldn't
1758             // appear at the mouse position (which is still the only position
1759             // associated with help event) if the mouse is far away, although
1760             // we still do use the mouse position if it's over the window
1761             // because we suppose the user looks approximately at the mouse
1762             // already and so it would be more convenient than showing tooltip
1763             // at some arbitrary position which can be quite far from it
1764             const wxRect rectClient = GetClientRect();
1765             if ( !rectClient.Contains(ScreenToClient(pos)) )
1766             {
1767                 // position help slightly under and to the right of this window
1768                 pos = ClientToScreen(wxPoint(
1769                         2*GetCharWidth(),
1770                         rectClient.height + GetCharHeight()
1771                       ));
1772             }
1773         }
1774
1775         if ( helpProvider->ShowHelpAtPoint(this, pos, origin) )
1776         {
1777             // skip the event.Skip() below
1778             return;
1779         }
1780     }
1781
1782     event.Skip();
1783 }
1784
1785 #endif // wxUSE_HELP
1786
1787 // ----------------------------------------------------------------------------
1788 // tooltips
1789 // ----------------------------------------------------------------------------
1790
1791 #if wxUSE_TOOLTIPS
1792
1793 void wxWindowBase::SetToolTip( const wxString &tip )
1794 {
1795     // don't create the new tooltip if we already have one
1796     if ( m_tooltip )
1797     {
1798         m_tooltip->SetTip( tip );
1799     }
1800     else
1801     {
1802         SetToolTip( new wxToolTip( tip ) );
1803     }
1804
1805     // setting empty tooltip text does not remove the tooltip any more - use
1806     // SetToolTip((wxToolTip *)NULL) for this
1807 }
1808
1809 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1810 {
1811     if ( m_tooltip != tooltip )
1812     {
1813         if ( m_tooltip )
1814             delete m_tooltip;
1815
1816         m_tooltip = tooltip;
1817     }
1818 }
1819
1820 #endif // wxUSE_TOOLTIPS
1821
1822 // ----------------------------------------------------------------------------
1823 // constraints and sizers
1824 // ----------------------------------------------------------------------------
1825
1826 #if wxUSE_CONSTRAINTS
1827
1828 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1829 {
1830     if ( m_constraints )
1831     {
1832         UnsetConstraints(m_constraints);
1833         delete m_constraints;
1834     }
1835     m_constraints = constraints;
1836     if ( m_constraints )
1837     {
1838         // Make sure other windows know they're part of a 'meaningful relationship'
1839         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1840             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1841         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1842             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1843         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1844             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1845         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1846             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1847         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1848             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1849         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1850             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1851         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1852             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1853         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1854             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1855     }
1856 }
1857
1858 // This removes any dangling pointers to this window in other windows'
1859 // constraintsInvolvedIn lists.
1860 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1861 {
1862     if ( c )
1863     {
1864         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1865             c->left.GetOtherWindow()->RemoveConstraintReference(this);
1866         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1867             c->top.GetOtherWindow()->RemoveConstraintReference(this);
1868         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1869             c->right.GetOtherWindow()->RemoveConstraintReference(this);
1870         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1871             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1872         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1873             c->width.GetOtherWindow()->RemoveConstraintReference(this);
1874         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1875             c->height.GetOtherWindow()->RemoveConstraintReference(this);
1876         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1877             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
1878         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
1879             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
1880     }
1881 }
1882
1883 // Back-pointer to other windows we're involved with, so if we delete this
1884 // window, we must delete any constraints we're involved with.
1885 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
1886 {
1887     if ( !m_constraintsInvolvedIn )
1888         m_constraintsInvolvedIn = new wxWindowList;
1889     if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
1890         m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
1891 }
1892
1893 // REMOVE back-pointer to other windows we're involved with.
1894 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
1895 {
1896     if ( m_constraintsInvolvedIn )
1897         m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
1898 }
1899
1900 // Reset any constraints that mention this window
1901 void wxWindowBase::DeleteRelatedConstraints()
1902 {
1903     if ( m_constraintsInvolvedIn )
1904     {
1905         wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
1906         while (node)
1907         {
1908             wxWindow *win = node->GetData();
1909             wxLayoutConstraints *constr = win->GetConstraints();
1910
1911             // Reset any constraints involving this window
1912             if ( constr )
1913             {
1914                 constr->left.ResetIfWin(this);
1915                 constr->top.ResetIfWin(this);
1916                 constr->right.ResetIfWin(this);
1917                 constr->bottom.ResetIfWin(this);
1918                 constr->width.ResetIfWin(this);
1919                 constr->height.ResetIfWin(this);
1920                 constr->centreX.ResetIfWin(this);
1921                 constr->centreY.ResetIfWin(this);
1922             }
1923
1924             wxWindowList::compatibility_iterator next = node->GetNext();
1925             m_constraintsInvolvedIn->Erase(node);
1926             node = next;
1927         }
1928
1929         delete m_constraintsInvolvedIn;
1930         m_constraintsInvolvedIn = (wxWindowList *) NULL;
1931     }
1932 }
1933
1934 #endif // wxUSE_CONSTRAINTS
1935
1936 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
1937 {
1938     if ( sizer == m_windowSizer)
1939         return;
1940
1941     if ( m_windowSizer )
1942     {
1943         m_windowSizer->SetContainingWindow(NULL);
1944
1945         if ( deleteOld )
1946             delete m_windowSizer;
1947     }
1948
1949     m_windowSizer = sizer;
1950     if ( m_windowSizer )
1951     {
1952         m_windowSizer->SetContainingWindow((wxWindow *)this);
1953     }
1954
1955     SetAutoLayout(m_windowSizer != NULL);
1956 }
1957
1958 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
1959 {
1960     SetSizer( sizer, deleteOld );
1961     sizer->SetSizeHints( (wxWindow*) this );
1962 }
1963
1964
1965 void wxWindowBase::SetContainingSizer(wxSizer* sizer)
1966 {
1967     // adding a window to a sizer twice is going to result in fatal and
1968     // hard to debug problems later because when deleting the second
1969     // associated wxSizerItem we're going to dereference a dangling
1970     // pointer; so try to detect this as early as possible
1971     wxASSERT_MSG( !sizer || m_containingSizer != sizer,
1972                   _T("Adding a window to the same sizer twice?") );
1973
1974     m_containingSizer = sizer;
1975 }
1976
1977 #if wxUSE_CONSTRAINTS
1978
1979 void wxWindowBase::SatisfyConstraints()
1980 {
1981     wxLayoutConstraints *constr = GetConstraints();
1982     bool wasOk = constr && constr->AreSatisfied();
1983
1984     ResetConstraints();   // Mark all constraints as unevaluated
1985
1986     int noChanges = 1;
1987
1988     // if we're a top level panel (i.e. our parent is frame/dialog), our
1989     // own constraints will never be satisfied any more unless we do it
1990     // here
1991     if ( wasOk )
1992     {
1993         while ( noChanges > 0 )
1994         {
1995             LayoutPhase1(&noChanges);
1996         }
1997     }
1998
1999     LayoutPhase2(&noChanges);
2000 }
2001
2002 #endif // wxUSE_CONSTRAINTS
2003
2004 bool wxWindowBase::Layout()
2005 {
2006     // If there is a sizer, use it instead of the constraints
2007     if ( GetSizer() )
2008     {
2009         int w = 0, h = 0;
2010         GetVirtualSize(&w, &h);
2011         GetSizer()->SetDimension( 0, 0, w, h );
2012     }
2013 #if wxUSE_CONSTRAINTS
2014     else
2015     {
2016         SatisfyConstraints(); // Find the right constraints values
2017         SetConstraintSizes(); // Recursively set the real window sizes
2018     }
2019 #endif
2020
2021     return true;
2022 }
2023
2024 #if wxUSE_CONSTRAINTS
2025
2026 // first phase of the constraints evaluation: set our own constraints
2027 bool wxWindowBase::LayoutPhase1(int *noChanges)
2028 {
2029     wxLayoutConstraints *constr = GetConstraints();
2030
2031     return !constr || constr->SatisfyConstraints(this, noChanges);
2032 }
2033
2034 // second phase: set the constraints for our children
2035 bool wxWindowBase::LayoutPhase2(int *noChanges)
2036 {
2037     *noChanges = 0;
2038
2039     // Layout children
2040     DoPhase(1);
2041
2042     // Layout grand children
2043     DoPhase(2);
2044
2045     return true;
2046 }
2047
2048 // Do a phase of evaluating child constraints
2049 bool wxWindowBase::DoPhase(int phase)
2050 {
2051     // the list containing the children for which the constraints are already
2052     // set correctly
2053     wxWindowList succeeded;
2054
2055     // the max number of iterations we loop before concluding that we can't set
2056     // the constraints
2057     static const int maxIterations = 500;
2058
2059     for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
2060     {
2061         int noChanges = 0;
2062
2063         // loop over all children setting their constraints
2064         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2065               node;
2066               node = node->GetNext() )
2067         {
2068             wxWindow *child = node->GetData();
2069             if ( child->IsTopLevel() )
2070             {
2071                 // top level children are not inside our client area
2072                 continue;
2073             }
2074
2075             if ( !child->GetConstraints() || succeeded.Find(child) )
2076             {
2077                 // this one is either already ok or nothing we can do about it
2078                 continue;
2079             }
2080
2081             int tempNoChanges = 0;
2082             bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
2083                                       : child->LayoutPhase2(&tempNoChanges);
2084             noChanges += tempNoChanges;
2085
2086             if ( success )
2087             {
2088                 succeeded.Append(child);
2089             }
2090         }
2091
2092         if ( !noChanges )
2093         {
2094             // constraints are set
2095             break;
2096         }
2097     }
2098
2099     return true;
2100 }
2101
2102 void wxWindowBase::ResetConstraints()
2103 {
2104     wxLayoutConstraints *constr = GetConstraints();
2105     if ( constr )
2106     {
2107         constr->left.SetDone(false);
2108         constr->top.SetDone(false);
2109         constr->right.SetDone(false);
2110         constr->bottom.SetDone(false);
2111         constr->width.SetDone(false);
2112         constr->height.SetDone(false);
2113         constr->centreX.SetDone(false);
2114         constr->centreY.SetDone(false);
2115     }
2116
2117     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2118     while (node)
2119     {
2120         wxWindow *win = node->GetData();
2121         if ( !win->IsTopLevel() )
2122             win->ResetConstraints();
2123         node = node->GetNext();
2124     }
2125 }
2126
2127 // Need to distinguish between setting the 'fake' size for windows and sizers,
2128 // and setting the real values.
2129 void wxWindowBase::SetConstraintSizes(bool recurse)
2130 {
2131     wxLayoutConstraints *constr = GetConstraints();
2132     if ( constr && constr->AreSatisfied() )
2133     {
2134         int x = constr->left.GetValue();
2135         int y = constr->top.GetValue();
2136         int w = constr->width.GetValue();
2137         int h = constr->height.GetValue();
2138
2139         if ( (constr->width.GetRelationship() != wxAsIs ) ||
2140              (constr->height.GetRelationship() != wxAsIs) )
2141         {
2142             SetSize(x, y, w, h);
2143         }
2144         else
2145         {
2146             // If we don't want to resize this window, just move it...
2147             Move(x, y);
2148         }
2149     }
2150     else if ( constr )
2151     {
2152         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
2153                    GetClassInfo()->GetClassName(),
2154                    GetName().c_str());
2155     }
2156
2157     if ( recurse )
2158     {
2159         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2160         while (node)
2161         {
2162             wxWindow *win = node->GetData();
2163             if ( !win->IsTopLevel() && win->GetConstraints() )
2164                 win->SetConstraintSizes();
2165             node = node->GetNext();
2166         }
2167     }
2168 }
2169
2170 // Only set the size/position of the constraint (if any)
2171 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
2172 {
2173     wxLayoutConstraints *constr = GetConstraints();
2174     if ( constr )
2175     {
2176         if ( x != wxDefaultCoord )
2177         {
2178             constr->left.SetValue(x);
2179             constr->left.SetDone(true);
2180         }
2181         if ( y != wxDefaultCoord )
2182         {
2183             constr->top.SetValue(y);
2184             constr->top.SetDone(true);
2185         }
2186         if ( w != wxDefaultCoord )
2187         {
2188             constr->width.SetValue(w);
2189             constr->width.SetDone(true);
2190         }
2191         if ( h != wxDefaultCoord )
2192         {
2193             constr->height.SetValue(h);
2194             constr->height.SetDone(true);
2195         }
2196     }
2197 }
2198
2199 void wxWindowBase::MoveConstraint(int x, int y)
2200 {
2201     wxLayoutConstraints *constr = GetConstraints();
2202     if ( constr )
2203     {
2204         if ( x != wxDefaultCoord )
2205         {
2206             constr->left.SetValue(x);
2207             constr->left.SetDone(true);
2208         }
2209         if ( y != wxDefaultCoord )
2210         {
2211             constr->top.SetValue(y);
2212             constr->top.SetDone(true);
2213         }
2214     }
2215 }
2216
2217 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
2218 {
2219     wxLayoutConstraints *constr = GetConstraints();
2220     if ( constr )
2221     {
2222         *w = constr->width.GetValue();
2223         *h = constr->height.GetValue();
2224     }
2225     else
2226         GetSize(w, h);
2227 }
2228
2229 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
2230 {
2231     wxLayoutConstraints *constr = GetConstraints();
2232     if ( constr )
2233     {
2234         *w = constr->width.GetValue();
2235         *h = constr->height.GetValue();
2236     }
2237     else
2238         GetClientSize(w, h);
2239 }
2240
2241 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
2242 {
2243     wxLayoutConstraints *constr = GetConstraints();
2244     if ( constr )
2245     {
2246         *x = constr->left.GetValue();
2247         *y = constr->top.GetValue();
2248     }
2249     else
2250         GetPosition(x, y);
2251 }
2252
2253 #endif // wxUSE_CONSTRAINTS
2254
2255 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
2256 {
2257     // don't do it for the dialogs/frames - they float independently of their
2258     // parent
2259     if ( !IsTopLevel() )
2260     {
2261         wxWindow *parent = GetParent();
2262         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
2263         {
2264             wxPoint pt(parent->GetClientAreaOrigin());
2265             x += pt.x;
2266             y += pt.y;
2267         }
2268     }
2269 }
2270
2271 // ----------------------------------------------------------------------------
2272 // Update UI processing
2273 // ----------------------------------------------------------------------------
2274
2275 void wxWindowBase::UpdateWindowUI(long flags)
2276 {
2277     wxUpdateUIEvent event(GetId());
2278     event.SetEventObject(this);
2279
2280     if ( GetEventHandler()->ProcessEvent(event) )
2281     {
2282         DoUpdateWindowUI(event);
2283     }
2284
2285     if (flags & wxUPDATE_UI_RECURSE)
2286     {
2287         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2288         while (node)
2289         {
2290             wxWindow* child = (wxWindow*) node->GetData();
2291             child->UpdateWindowUI(flags);
2292             node = node->GetNext();
2293         }
2294     }
2295 }
2296
2297 // do the window-specific processing after processing the update event
2298 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
2299 {
2300     if ( event.GetSetEnabled() )
2301         Enable(event.GetEnabled());
2302
2303     if ( event.GetSetShown() )
2304         Show(event.GetShown());
2305 }
2306
2307 // ----------------------------------------------------------------------------
2308 // dialog units translations
2309 // ----------------------------------------------------------------------------
2310
2311 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
2312 {
2313     int charWidth = GetCharWidth();
2314     int charHeight = GetCharHeight();
2315     wxPoint pt2 = wxDefaultPosition;
2316     if (pt.x != wxDefaultCoord)
2317         pt2.x = (int) ((pt.x * 4) / charWidth);
2318     if (pt.y != wxDefaultCoord)
2319         pt2.y = (int) ((pt.y * 8) / charHeight);
2320
2321     return pt2;
2322 }
2323
2324 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
2325 {
2326     int charWidth = GetCharWidth();
2327     int charHeight = GetCharHeight();
2328     wxPoint pt2 = wxDefaultPosition;
2329     if (pt.x != wxDefaultCoord)
2330         pt2.x = (int) ((pt.x * charWidth) / 4);
2331     if (pt.y != wxDefaultCoord)
2332         pt2.y = (int) ((pt.y * charHeight) / 8);
2333
2334     return pt2;
2335 }
2336
2337 // ----------------------------------------------------------------------------
2338 // event handlers
2339 // ----------------------------------------------------------------------------
2340
2341 // propagate the colour change event to the subwindows
2342 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
2343 {
2344     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2345     while ( node )
2346     {
2347         // Only propagate to non-top-level windows
2348         wxWindow *win = node->GetData();
2349         if ( !win->IsTopLevel() )
2350         {
2351             wxSysColourChangedEvent event2;
2352             event.SetEventObject(win);
2353             win->GetEventHandler()->ProcessEvent(event2);
2354         }
2355
2356         node = node->GetNext();
2357     }
2358
2359     Refresh();
2360 }
2361
2362 // the default action is to populate dialog with data when it's created,
2363 // and nudge the UI into displaying itself correctly in case
2364 // we've turned the wxUpdateUIEvents frequency down low.
2365 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
2366 {
2367     TransferDataToWindow();
2368
2369     // Update the UI at this point
2370     UpdateWindowUI(wxUPDATE_UI_RECURSE);
2371 }
2372
2373 // ----------------------------------------------------------------------------
2374 // menu-related functions
2375 // ----------------------------------------------------------------------------
2376
2377 #if wxUSE_MENUS
2378
2379 bool wxWindowBase::PopupMenu(wxMenu *menu, int x, int y)
2380 {
2381     wxCHECK_MSG( menu, false, "can't popup NULL menu" );
2382
2383     wxCurrentPopupMenu = menu;
2384     const bool rc = DoPopupMenu(menu, x, y);
2385     wxCurrentPopupMenu = NULL;
2386
2387     return rc;
2388 }
2389
2390 // this is used to pass the id of the selected item from the menu event handler
2391 // to the main function itself
2392 //
2393 // it's ok to use a global here as there can be at most one popup menu shown at
2394 // any time
2395 static int gs_popupMenuSelection = wxID_NONE;
2396
2397 void wxWindowBase::InternalOnPopupMenu(wxCommandEvent& event)
2398 {
2399     // store the id in a global variable where we'll retrieve it from later
2400     gs_popupMenuSelection = event.GetId();
2401 }
2402
2403 int
2404 wxWindowBase::DoGetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y)
2405 {
2406     gs_popupMenuSelection = wxID_NONE;
2407
2408     Connect(wxEVT_COMMAND_MENU_SELECTED,
2409             wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2410             NULL,
2411             this);
2412
2413     PopupMenu(&menu, x, y);
2414
2415     Disconnect(wxEVT_COMMAND_MENU_SELECTED,
2416                wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
2417                NULL,
2418                this);
2419
2420     return gs_popupMenuSelection;
2421 }
2422
2423 #endif // wxUSE_MENUS
2424
2425 // methods for drawing the sizers in a visible way
2426 #ifdef __WXDEBUG__
2427
2428 static void DrawSizers(wxWindowBase *win);
2429
2430 static void DrawBorder(wxWindowBase *win, const wxRect& rect, bool fill = false)
2431 {
2432     wxClientDC dc((wxWindow *)win);
2433     dc.SetPen(*wxRED_PEN);
2434     dc.SetBrush(fill ? wxBrush(*wxRED, wxBRUSHSTYLE_CROSSDIAG_HATCH) : *wxTRANSPARENT_BRUSH);
2435     dc.DrawRectangle(rect.Deflate(1, 1));
2436 }
2437
2438 static void DrawSizer(wxWindowBase *win, wxSizer *sizer)
2439 {
2440     const wxSizerItemList& items = sizer->GetChildren();
2441     for ( wxSizerItemList::const_iterator i = items.begin(),
2442                                         end = items.end();
2443           i != end;
2444           ++i )
2445     {
2446         wxSizerItem *item = *i;
2447         if ( item->IsSizer() )
2448         {
2449             DrawBorder(win, item->GetRect().Deflate(2));
2450             DrawSizer(win, item->GetSizer());
2451         }
2452         else if ( item->IsSpacer() )
2453         {
2454             DrawBorder(win, item->GetRect().Deflate(2), true);
2455         }
2456         else if ( item->IsWindow() )
2457         {
2458             DrawSizers(item->GetWindow());
2459         }
2460     }
2461 }
2462
2463 static void DrawSizers(wxWindowBase *win)
2464 {
2465     wxSizer *sizer = win->GetSizer();
2466     if ( sizer )
2467     {
2468         DrawBorder(win, win->GetClientSize());
2469         DrawSizer(win, sizer);
2470     }
2471     else // no sizer, still recurse into the children
2472     {
2473         const wxWindowList& children = win->GetChildren();
2474         for ( wxWindowList::const_iterator i = children.begin(),
2475                                          end = children.end();
2476               i != end;
2477               ++i )
2478         {
2479             DrawSizers(*i);
2480         }
2481     }
2482 }
2483
2484 #endif // __WXDEBUG__
2485
2486 // process special middle clicks
2487 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
2488 {
2489     if ( event.ControlDown() && event.AltDown() )
2490     {
2491 #ifdef __WXDEBUG__
2492         // Ctrl-Alt-Shift-mclick makes the sizers visible in debug builds
2493         if ( event.ShiftDown() )
2494         {
2495             DrawSizers(this);
2496             return;
2497         }
2498 #endif // __WXDEBUG__
2499         ::wxInfoMessageBox((wxWindow*)this);
2500     }
2501     else
2502     {
2503         event.Skip();
2504     }
2505 }
2506
2507 // ----------------------------------------------------------------------------
2508 // accessibility
2509 // ----------------------------------------------------------------------------
2510
2511 #if wxUSE_ACCESSIBILITY
2512 void wxWindowBase::SetAccessible(wxAccessible* accessible)
2513 {
2514     if (m_accessible && (accessible != m_accessible))
2515         delete m_accessible;
2516     m_accessible = accessible;
2517     if (m_accessible)
2518         m_accessible->SetWindow((wxWindow*) this);
2519 }
2520
2521 // Returns the accessible object, creating if necessary.
2522 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2523 {
2524     if (!m_accessible)
2525         m_accessible = CreateAccessible();
2526     return m_accessible;
2527 }
2528
2529 // Override to create a specific accessible object.
2530 wxAccessible* wxWindowBase::CreateAccessible()
2531 {
2532     return new wxWindowAccessible((wxWindow*) this);
2533 }
2534
2535 #endif
2536
2537 // ----------------------------------------------------------------------------
2538 // list classes implementation
2539 // ----------------------------------------------------------------------------
2540
2541 #if wxUSE_STL
2542
2543 #include "wx/listimpl.cpp"
2544 WX_DEFINE_LIST(wxWindowList)
2545
2546 #else // !wxUSE_STL
2547
2548 void wxWindowListNode::DeleteData()
2549 {
2550     delete (wxWindow *)GetData();
2551 }
2552
2553 #endif // wxUSE_STL/!wxUSE_STL
2554
2555 // ----------------------------------------------------------------------------
2556 // borders
2557 // ----------------------------------------------------------------------------
2558
2559 wxBorder wxWindowBase::GetBorder(long flags) const
2560 {
2561     wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2562     if ( border == wxBORDER_DEFAULT )
2563     {
2564         border = GetDefaultBorder();
2565     }
2566     else if ( border == wxBORDER_THEME )
2567     {
2568         border = GetDefaultBorderForControl();
2569     }
2570
2571     return border;
2572 }
2573
2574 wxBorder wxWindowBase::GetDefaultBorder() const
2575 {
2576     return wxBORDER_NONE;
2577 }
2578
2579 // ----------------------------------------------------------------------------
2580 // hit testing
2581 // ----------------------------------------------------------------------------
2582
2583 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2584 {
2585     // here we just check if the point is inside the window or not
2586
2587     // check the top and left border first
2588     bool outside = x < 0 || y < 0;
2589     if ( !outside )
2590     {
2591         // check the right and bottom borders too
2592         wxSize size = GetSize();
2593         outside = x >= size.x || y >= size.y;
2594     }
2595
2596     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2597 }
2598
2599 // ----------------------------------------------------------------------------
2600 // mouse capture
2601 // ----------------------------------------------------------------------------
2602
2603 struct WXDLLEXPORT wxWindowNext
2604 {
2605     wxWindow *win;
2606     wxWindowNext *next;
2607 } *wxWindowBase::ms_winCaptureNext = NULL;
2608 wxWindow *wxWindowBase::ms_winCaptureCurrent = NULL;
2609 bool wxWindowBase::ms_winCaptureChanging = false;
2610
2611 void wxWindowBase::CaptureMouse()
2612 {
2613     wxLogTrace(_T("mousecapture"), _T("CaptureMouse(%p)"), wx_static_cast(void*, this));
2614
2615     wxASSERT_MSG( !ms_winCaptureChanging, _T("recursive CaptureMouse call?") );
2616
2617     ms_winCaptureChanging = true;
2618
2619     wxWindow *winOld = GetCapture();
2620     if ( winOld )
2621     {
2622         ((wxWindowBase*) winOld)->DoReleaseMouse();
2623
2624         // save it on stack
2625         wxWindowNext *item = new wxWindowNext;
2626         item->win = winOld;
2627         item->next = ms_winCaptureNext;
2628         ms_winCaptureNext = item;
2629     }
2630     //else: no mouse capture to save
2631
2632     DoCaptureMouse();
2633     ms_winCaptureCurrent = (wxWindow*)this;
2634
2635     ms_winCaptureChanging = false;
2636 }
2637
2638 void wxWindowBase::ReleaseMouse()
2639 {
2640     wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(%p)"), wx_static_cast(void*, this));
2641
2642     wxASSERT_MSG( !ms_winCaptureChanging, _T("recursive ReleaseMouse call?") );
2643
2644     wxASSERT_MSG( GetCapture() == this,
2645                   "attempt to release mouse, but this window hasn't captured it" );
2646     wxASSERT_MSG( ms_winCaptureCurrent == this,
2647                   "attempt to release mouse, but this window hasn't captured it" );
2648
2649     ms_winCaptureChanging = true;
2650
2651     DoReleaseMouse();
2652     ms_winCaptureCurrent = NULL;
2653
2654     if ( ms_winCaptureNext )
2655     {
2656         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2657         ms_winCaptureCurrent = ms_winCaptureNext->win;
2658
2659         wxWindowNext *item = ms_winCaptureNext;
2660         ms_winCaptureNext = item->next;
2661         delete item;
2662     }
2663     //else: stack is empty, no previous capture
2664
2665     ms_winCaptureChanging = false;
2666
2667     wxLogTrace(_T("mousecapture"),
2668         (const wxChar *) _T("After ReleaseMouse() mouse is captured by %p"),
2669         wx_static_cast(void*, GetCapture()));
2670 }
2671
2672 static void DoNotifyWindowAboutCaptureLost(wxWindow *win)
2673 {
2674     wxMouseCaptureLostEvent event(win->GetId());
2675     event.SetEventObject(win);
2676     if ( !win->GetEventHandler()->ProcessEvent(event) )
2677     {
2678         // windows must handle this event, otherwise the app wouldn't behave
2679         // correctly if it loses capture unexpectedly; see the discussion here:
2680         // http://sourceforge.net/tracker/index.php?func=detail&aid=1153662&group_id=9863&atid=109863
2681         // http://article.gmane.org/gmane.comp.lib.wxwidgets.devel/82376
2682         wxFAIL_MSG( _T("window that captured the mouse didn't process wxEVT_MOUSE_CAPTURE_LOST") );
2683     }
2684 }
2685
2686 /* static */
2687 void wxWindowBase::NotifyCaptureLost()
2688 {
2689     // don't do anything if capture lost was expected, i.e. resulted from
2690     // a wx call to ReleaseMouse or CaptureMouse:
2691     if ( ms_winCaptureChanging )
2692         return;
2693
2694     // if the capture was lost unexpectedly, notify every window that has
2695     // capture (on stack or current) about it and clear the stack:
2696
2697     if ( ms_winCaptureCurrent )
2698     {
2699         DoNotifyWindowAboutCaptureLost(ms_winCaptureCurrent);
2700         ms_winCaptureCurrent = NULL;
2701     }
2702
2703     while ( ms_winCaptureNext )
2704     {
2705         wxWindowNext *item = ms_winCaptureNext;
2706         ms_winCaptureNext = item->next;
2707
2708         DoNotifyWindowAboutCaptureLost(item->win);
2709
2710         delete item;
2711     }
2712 }
2713
2714 #if wxUSE_HOTKEY
2715
2716 bool
2717 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2718                              int WXUNUSED(modifiers),
2719                              int WXUNUSED(keycode))
2720 {
2721     // not implemented
2722     return false;
2723 }
2724
2725 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2726 {
2727     // not implemented
2728     return false;
2729 }
2730
2731 #endif // wxUSE_HOTKEY
2732
2733 // ----------------------------------------------------------------------------
2734 // event processing
2735 // ----------------------------------------------------------------------------
2736
2737 bool wxWindowBase::TryValidator(wxEvent& wxVALIDATOR_PARAM(event))
2738 {
2739 #if wxUSE_VALIDATORS
2740     // Can only use the validator of the window which
2741     // is receiving the event
2742     if ( event.GetEventObject() == this )
2743     {
2744         wxValidator *validator = GetValidator();
2745         if ( validator && validator->ProcessEvent(event) )
2746         {
2747             return true;
2748         }
2749     }
2750 #endif // wxUSE_VALIDATORS
2751
2752     return false;
2753 }
2754
2755 bool wxWindowBase::TryParent(wxEvent& event)
2756 {
2757     // carry on up the parent-child hierarchy if the propagation count hasn't
2758     // reached zero yet
2759     if ( event.ShouldPropagate() )
2760     {
2761         // honour the requests to stop propagation at this window: this is
2762         // used by the dialogs, for example, to prevent processing the events
2763         // from the dialog controls in the parent frame which rarely, if ever,
2764         // makes sense
2765         if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
2766         {
2767             wxWindow *parent = GetParent();
2768             if ( parent && !parent->IsBeingDeleted() )
2769             {
2770                 wxPropagateOnce propagateOnce(event);
2771
2772                 return parent->GetEventHandler()->ProcessEvent(event);
2773             }
2774         }
2775     }
2776
2777     return wxEvtHandler::TryParent(event);
2778 }
2779
2780 // ----------------------------------------------------------------------------
2781 // window relationships
2782 // ----------------------------------------------------------------------------
2783
2784 wxWindow *wxWindowBase::DoGetSibling(WindowOrder order) const
2785 {
2786     wxCHECK_MSG( GetParent(), NULL,
2787                     _T("GetPrev/NextSibling() don't work for TLWs!") );
2788
2789     wxWindowList& siblings = GetParent()->GetChildren();
2790     wxWindowList::compatibility_iterator i = siblings.Find((wxWindow *)this);
2791     wxCHECK_MSG( i, NULL, _T("window not a child of its parent?") );
2792
2793     if ( order == OrderBefore )
2794         i = i->GetPrevious();
2795     else // OrderAfter
2796         i = i->GetNext();
2797
2798     return i ? i->GetData() : NULL;
2799 }
2800
2801 // ----------------------------------------------------------------------------
2802 // keyboard navigation
2803 // ----------------------------------------------------------------------------
2804
2805 // Navigates in the specified direction inside this window
2806 bool wxWindowBase::DoNavigateIn(int flags)
2807 {
2808 #ifdef wxHAS_NATIVE_TAB_TRAVERSAL
2809     // native code doesn't process our wxNavigationKeyEvents anyhow
2810     wxUnusedVar(flags);
2811     return false;
2812 #else // !wxHAS_NATIVE_TAB_TRAVERSAL
2813     wxNavigationKeyEvent eventNav;
2814     wxWindow *focused = FindFocus();
2815     eventNav.SetCurrentFocus(focused);
2816     eventNav.SetEventObject(focused);
2817     eventNav.SetFlags(flags);
2818     return GetEventHandler()->ProcessEvent(eventNav);
2819 #endif // wxHAS_NATIVE_TAB_TRAVERSAL/!wxHAS_NATIVE_TAB_TRAVERSAL
2820 }
2821
2822 bool wxWindowBase::HandleAsNavigationKey(const wxKeyEvent& event)
2823 {
2824     if ( event.GetKeyCode() != WXK_TAB )
2825         return false;
2826
2827     int flags = wxNavigationKeyEvent::FromTab;
2828
2829     if ( event.ShiftDown() )
2830         flags |= wxNavigationKeyEvent::IsBackward;
2831     else
2832         flags |= wxNavigationKeyEvent::IsForward;
2833
2834     if ( event.ControlDown() )
2835         flags |= wxNavigationKeyEvent::WinChange;
2836
2837     Navigate(flags);
2838     return true;
2839 }
2840
2841 void wxWindowBase::DoMoveInTabOrder(wxWindow *win, WindowOrder move)
2842 {
2843     // check that we're not a top level window
2844     wxCHECK_RET( GetParent(),
2845                     _T("MoveBefore/AfterInTabOrder() don't work for TLWs!") );
2846
2847     // detect the special case when we have nothing to do anyhow and when the
2848     // code below wouldn't work
2849     if ( win == this )
2850         return;
2851
2852     // find the target window in the siblings list
2853     wxWindowList& siblings = GetParent()->GetChildren();
2854     wxWindowList::compatibility_iterator i = siblings.Find(win);
2855     wxCHECK_RET( i, _T("MoveBefore/AfterInTabOrder(): win is not a sibling") );
2856
2857     // unfortunately, when wxUSE_STL == 1 DetachNode() is not implemented so we
2858     // can't just move the node around
2859     wxWindow *self = (wxWindow *)this;
2860     siblings.DeleteObject(self);
2861     if ( move == OrderAfter )
2862     {
2863         i = i->GetNext();
2864     }
2865
2866     if ( i )
2867     {
2868         siblings.Insert(i, self);
2869     }
2870     else // OrderAfter and win was the last sibling
2871     {
2872         siblings.Append(self);
2873     }
2874 }
2875
2876 // ----------------------------------------------------------------------------
2877 // focus handling
2878 // ----------------------------------------------------------------------------
2879
2880 /*static*/ wxWindow* wxWindowBase::FindFocus()
2881 {
2882     wxWindowBase *win = DoFindFocus();
2883     return win ? win->GetMainWindowOfCompositeControl() : NULL;
2884 }
2885
2886 bool wxWindowBase::HasFocus() const
2887 {
2888     wxWindowBase *win = DoFindFocus();
2889     return win == this ||
2890            win == wxConstCast(this, wxWindowBase)->GetMainWindowOfCompositeControl();
2891 }
2892
2893 // ----------------------------------------------------------------------------
2894 // global functions
2895 // ----------------------------------------------------------------------------
2896
2897 wxWindow* wxGetTopLevelParent(wxWindow *win)
2898 {
2899     while ( win && !win->IsTopLevel() )
2900          win = win->GetParent();
2901
2902     return win;
2903 }
2904
2905 #if wxUSE_ACCESSIBILITY
2906 // ----------------------------------------------------------------------------
2907 // accessible object for windows
2908 // ----------------------------------------------------------------------------
2909
2910 // Can return either a child object, or an integer
2911 // representing the child element, starting from 1.
2912 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
2913 {
2914     wxASSERT( GetWindow() != NULL );
2915     if (!GetWindow())
2916         return wxACC_FAIL;
2917
2918     return wxACC_NOT_IMPLEMENTED;
2919 }
2920
2921 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
2922 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
2923 {
2924     wxASSERT( GetWindow() != NULL );
2925     if (!GetWindow())
2926         return wxACC_FAIL;
2927
2928     wxWindow* win = NULL;
2929     if (elementId == 0)
2930     {
2931         win = GetWindow();
2932     }
2933     else
2934     {
2935         if (elementId <= (int) GetWindow()->GetChildren().GetCount())
2936         {
2937             win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
2938         }
2939         else
2940             return wxACC_FAIL;
2941     }
2942     if (win)
2943     {
2944         rect = win->GetRect();
2945         if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
2946             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
2947         return wxACC_OK;
2948     }
2949
2950     return wxACC_NOT_IMPLEMENTED;
2951 }
2952
2953 // Navigates from fromId to toId/toObject.
2954 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
2955                              int* WXUNUSED(toId), wxAccessible** toObject)
2956 {
2957     wxASSERT( GetWindow() != NULL );
2958     if (!GetWindow())
2959         return wxACC_FAIL;
2960
2961     switch (navDir)
2962     {
2963     case wxNAVDIR_FIRSTCHILD:
2964         {
2965             if (GetWindow()->GetChildren().GetCount() == 0)
2966                 return wxACC_FALSE;
2967             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
2968             *toObject = childWindow->GetOrCreateAccessible();
2969
2970             return wxACC_OK;
2971         }
2972     case wxNAVDIR_LASTCHILD:
2973         {
2974             if (GetWindow()->GetChildren().GetCount() == 0)
2975                 return wxACC_FALSE;
2976             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
2977             *toObject = childWindow->GetOrCreateAccessible();
2978
2979             return wxACC_OK;
2980         }
2981     case wxNAVDIR_RIGHT:
2982     case wxNAVDIR_DOWN:
2983     case wxNAVDIR_NEXT:
2984         {
2985             wxWindowList::compatibility_iterator node =
2986                 wxWindowList::compatibility_iterator();
2987             if (fromId == 0)
2988             {
2989                 // Can't navigate to sibling of this window
2990                 // if we're a top-level window.
2991                 if (!GetWindow()->GetParent())
2992                     return wxACC_NOT_IMPLEMENTED;
2993
2994                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2995             }
2996             else
2997             {
2998                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2999                     node = GetWindow()->GetChildren().Item(fromId-1);
3000             }
3001
3002             if (node && node->GetNext())
3003             {
3004                 wxWindow* nextWindow = node->GetNext()->GetData();
3005                 *toObject = nextWindow->GetOrCreateAccessible();
3006                 return wxACC_OK;
3007             }
3008             else
3009                 return wxACC_FALSE;
3010         }
3011     case wxNAVDIR_LEFT:
3012     case wxNAVDIR_UP:
3013     case wxNAVDIR_PREVIOUS:
3014         {
3015             wxWindowList::compatibility_iterator node =
3016                 wxWindowList::compatibility_iterator();
3017             if (fromId == 0)
3018             {
3019                 // Can't navigate to sibling of this window
3020                 // if we're a top-level window.
3021                 if (!GetWindow()->GetParent())
3022                     return wxACC_NOT_IMPLEMENTED;
3023
3024                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
3025             }
3026             else
3027             {
3028                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
3029                     node = GetWindow()->GetChildren().Item(fromId-1);
3030             }
3031
3032             if (node && node->GetPrevious())
3033             {
3034                 wxWindow* previousWindow = node->GetPrevious()->GetData();
3035                 *toObject = previousWindow->GetOrCreateAccessible();
3036                 return wxACC_OK;
3037             }
3038             else
3039                 return wxACC_FALSE;
3040         }
3041     }
3042
3043     return wxACC_NOT_IMPLEMENTED;
3044 }
3045
3046 // Gets the name of the specified object.
3047 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
3048 {
3049     wxASSERT( GetWindow() != NULL );
3050     if (!GetWindow())
3051         return wxACC_FAIL;
3052
3053     wxString title;
3054
3055     // If a child, leave wxWidgets to call the function on the actual
3056     // child object.
3057     if (childId > 0)
3058         return wxACC_NOT_IMPLEMENTED;
3059
3060     // This will eventually be replaced by specialised
3061     // accessible classes, one for each kind of wxWidgets
3062     // control or window.
3063 #if wxUSE_BUTTON
3064     if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
3065         title = ((wxButton*) GetWindow())->GetLabel();
3066     else
3067 #endif
3068         title = GetWindow()->GetName();
3069
3070     if (!title.empty())
3071     {
3072         *name = title;
3073         return wxACC_OK;
3074     }
3075     else
3076         return wxACC_NOT_IMPLEMENTED;
3077 }
3078
3079 // Gets the number of children.
3080 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
3081 {
3082     wxASSERT( GetWindow() != NULL );
3083     if (!GetWindow())
3084         return wxACC_FAIL;
3085
3086     *childId = (int) GetWindow()->GetChildren().GetCount();
3087     return wxACC_OK;
3088 }
3089
3090 // Gets the specified child (starting from 1).
3091 // If *child is NULL and return value is wxACC_OK,
3092 // this means that the child is a simple element and
3093 // not an accessible object.
3094 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
3095 {
3096     wxASSERT( GetWindow() != NULL );
3097     if (!GetWindow())
3098         return wxACC_FAIL;
3099
3100     if (childId == 0)
3101     {
3102         *child = this;
3103         return wxACC_OK;
3104     }
3105
3106     if (childId > (int) GetWindow()->GetChildren().GetCount())
3107         return wxACC_FAIL;
3108
3109     wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
3110     *child = childWindow->GetOrCreateAccessible();
3111     if (*child)
3112         return wxACC_OK;
3113     else
3114         return wxACC_FAIL;
3115 }
3116
3117 // Gets the parent, or NULL.
3118 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
3119 {
3120     wxASSERT( GetWindow() != NULL );
3121     if (!GetWindow())
3122         return wxACC_FAIL;
3123
3124     wxWindow* parentWindow = GetWindow()->GetParent();
3125     if (!parentWindow)
3126     {
3127         *parent = NULL;
3128         return wxACC_OK;
3129     }
3130     else
3131     {
3132         *parent = parentWindow->GetOrCreateAccessible();
3133         if (*parent)
3134             return wxACC_OK;
3135         else
3136             return wxACC_FAIL;
3137     }
3138 }
3139
3140 // Performs the default action. childId is 0 (the action for this object)
3141 // or > 0 (the action for a child).
3142 // Return wxACC_NOT_SUPPORTED if there is no default action for this
3143 // window (e.g. an edit control).
3144 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
3145 {
3146     wxASSERT( GetWindow() != NULL );
3147     if (!GetWindow())
3148         return wxACC_FAIL;
3149
3150     return wxACC_NOT_IMPLEMENTED;
3151 }
3152
3153 // Gets the default action for this object (0) or > 0 (the action for a child).
3154 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
3155 // string if there is no action.
3156 // The retrieved string describes the action that is performed on an object,
3157 // not what the object does as a result. For example, a toolbar button that prints
3158 // a document has a default action of "Press" rather than "Prints the current document."
3159 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
3160 {
3161     wxASSERT( GetWindow() != NULL );
3162     if (!GetWindow())
3163         return wxACC_FAIL;
3164
3165     return wxACC_NOT_IMPLEMENTED;
3166 }
3167
3168 // Returns the description for this object or a child.
3169 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
3170 {
3171     wxASSERT( GetWindow() != NULL );
3172     if (!GetWindow())
3173         return wxACC_FAIL;
3174
3175     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3176     if (!ht.empty())
3177     {
3178         *description = ht;
3179         return wxACC_OK;
3180     }
3181     return wxACC_NOT_IMPLEMENTED;
3182 }
3183
3184 // Returns help text for this object or a child, similar to tooltip text.
3185 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
3186 {
3187     wxASSERT( GetWindow() != NULL );
3188     if (!GetWindow())
3189         return wxACC_FAIL;
3190
3191     wxString ht(GetWindow()->GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Keyboard));
3192     if (!ht.empty())
3193     {
3194         *helpText = ht;
3195         return wxACC_OK;
3196     }
3197     return wxACC_NOT_IMPLEMENTED;
3198 }
3199
3200 // Returns the keyboard shortcut for this object or child.
3201 // Return e.g. ALT+K
3202 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
3203 {
3204     wxASSERT( GetWindow() != NULL );
3205     if (!GetWindow())
3206         return wxACC_FAIL;
3207
3208     return wxACC_NOT_IMPLEMENTED;
3209 }
3210
3211 // Returns a role constant.
3212 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
3213 {
3214     wxASSERT( GetWindow() != NULL );
3215     if (!GetWindow())
3216         return wxACC_FAIL;
3217
3218     // If a child, leave wxWidgets to call the function on the actual
3219     // child object.
3220     if (childId > 0)
3221         return wxACC_NOT_IMPLEMENTED;
3222
3223     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3224         return wxACC_NOT_IMPLEMENTED;
3225 #if wxUSE_STATUSBAR
3226     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3227         return wxACC_NOT_IMPLEMENTED;
3228 #endif
3229 #if wxUSE_TOOLBAR
3230     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3231         return wxACC_NOT_IMPLEMENTED;
3232 #endif
3233
3234     //*role = wxROLE_SYSTEM_CLIENT;
3235     *role = wxROLE_SYSTEM_CLIENT;
3236     return wxACC_OK;
3237
3238     #if 0
3239     return wxACC_NOT_IMPLEMENTED;
3240     #endif
3241 }
3242
3243 // Returns a state constant.
3244 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
3245 {
3246     wxASSERT( GetWindow() != NULL );
3247     if (!GetWindow())
3248         return wxACC_FAIL;
3249
3250     // If a child, leave wxWidgets to call the function on the actual
3251     // child object.
3252     if (childId > 0)
3253         return wxACC_NOT_IMPLEMENTED;
3254
3255     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
3256         return wxACC_NOT_IMPLEMENTED;
3257
3258 #if wxUSE_STATUSBAR
3259     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
3260         return wxACC_NOT_IMPLEMENTED;
3261 #endif
3262 #if wxUSE_TOOLBAR
3263     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
3264         return wxACC_NOT_IMPLEMENTED;
3265 #endif
3266
3267     *state = 0;
3268     return wxACC_OK;
3269
3270     #if 0
3271     return wxACC_NOT_IMPLEMENTED;
3272     #endif
3273 }
3274
3275 // Returns a localized string representing the value for the object
3276 // or child.
3277 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
3278 {
3279     wxASSERT( GetWindow() != NULL );
3280     if (!GetWindow())
3281         return wxACC_FAIL;
3282
3283     return wxACC_NOT_IMPLEMENTED;
3284 }
3285
3286 // Selects the object or child.
3287 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
3288 {
3289     wxASSERT( GetWindow() != NULL );
3290     if (!GetWindow())
3291         return wxACC_FAIL;
3292
3293     return wxACC_NOT_IMPLEMENTED;
3294 }
3295
3296 // Gets the window with the keyboard focus.
3297 // If childId is 0 and child is NULL, no object in
3298 // this subhierarchy has the focus.
3299 // If this object has the focus, child should be 'this'.
3300 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
3301 {
3302     wxASSERT( GetWindow() != NULL );
3303     if (!GetWindow())
3304         return wxACC_FAIL;
3305
3306     return wxACC_NOT_IMPLEMENTED;
3307 }
3308
3309 #if wxUSE_VARIANT
3310 // Gets a variant representing the selected children
3311 // of this object.
3312 // Acceptable values:
3313 // - a null variant (IsNull() returns true)
3314 // - a list variant (GetType() == wxT("list")
3315 // - an integer representing the selected child element,
3316 //   or 0 if this object is selected (GetType() == wxT("long")
3317 // - a "void*" pointer to a wxAccessible child object
3318 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
3319 {
3320     wxASSERT( GetWindow() != NULL );
3321     if (!GetWindow())
3322         return wxACC_FAIL;
3323
3324     return wxACC_NOT_IMPLEMENTED;
3325 }
3326 #endif // wxUSE_VARIANT
3327
3328 #endif // wxUSE_ACCESSIBILITY
3329
3330 // ----------------------------------------------------------------------------
3331 // RTL support
3332 // ----------------------------------------------------------------------------
3333
3334 wxCoord
3335 wxWindowBase::AdjustForLayoutDirection(wxCoord x,
3336                                        wxCoord width,
3337                                        wxCoord widthTotal) const
3338 {
3339     if ( GetLayoutDirection() == wxLayout_RightToLeft )
3340     {
3341         x = widthTotal - x - width;
3342     }
3343
3344     return x;
3345 }
3346
3347