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