src/common/wincmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "windowbase.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/string.h"
  33     #include "wx/log.h"
  34     #include "wx/intl.h"
  35     #include "wx/frame.h"
  36     #include "wx/defs.h"
  37     #include "wx/window.h"
  38     #include "wx/control.h"
  39     #include "wx/checkbox.h"
  40     #include "wx/radiobut.h"
  41     #include "wx/statbox.h"
  42     #include "wx/textctrl.h"
  43     #include "wx/settings.h"
  44     #include "wx/dialog.h"
  45     #include "wx/msgdlg.h"
  46     #include "wx/statusbr.h"
  47     #include "wx/dcclient.h"
  48 #endif //WX_PRECOMP
  49
  50 #if defined(__WXMAC__) && wxUSE_SCROLLBAR
  51     #include "wx/scrolbar.h"
  52 #endif
  53
  54 #if wxUSE_CONSTRAINTS
  55     #include "wx/layout.h"
  56 #endif // wxUSE_CONSTRAINTS
  57
  58 #include "wx/sizer.h"
  59
  60 #if wxUSE_DRAG_AND_DROP
  61     #include "wx/dnd.h"
  62 #endif // wxUSE_DRAG_AND_DROP
  63
  64 #if wxUSE_ACCESSIBILITY
  65     #include "wx/access.h"
  66 #endif
  67
  68 #if wxUSE_HELP
  69     #include "wx/cshelp.h"
  70 #endif // wxUSE_HELP
  71
  72 #if wxUSE_TOOLTIPS
  73     #include "wx/tooltip.h"
  74 #endif // wxUSE_TOOLTIPS
  75
  76 #if wxUSE_CARET
  77     #include "wx/caret.h"
  78 #endif // wxUSE_CARET
  79
  80 // ----------------------------------------------------------------------------
  81 // static data
  82 // ----------------------------------------------------------------------------
  83
  84 #if defined(__WXPM__)
  85 int wxWindowBase::ms_lastControlId = 2000;
  86 #else
  87 int wxWindowBase::ms_lastControlId = -200;
  88 #endif
  89
  90 IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
  91
  92 // ----------------------------------------------------------------------------
  93 // event table
  94 // ----------------------------------------------------------------------------
  95
  96 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
  97     EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
  98     EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
  99     EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
 100
 101 #if wxUSE_HELP
 102     EVT_HELP(wxID_ANY, wxWindowBase::OnHelp)
 103 #endif // wxUSE_HELP
 104
 105 END_EVENT_TABLE()
 106
 107 // ============================================================================
 108 // implementation of the common functionality of the wxWindow class
 109 // ============================================================================
 110
 111 // ----------------------------------------------------------------------------
 112 // initialization
 113 // ----------------------------------------------------------------------------
 114
 115 // the default initialization
 116 wxWindowBase::wxWindowBase()
 117 {
 118     // no window yet, no parent nor children
 119     m_parent = (wxWindow *)NULL;
 120     m_windowId = wxID_ANY;
 121
 122     // no constraints on the minimal window size
 123     m_minWidth =
 124     m_maxWidth = wxDefaultSize.x;
 125     m_minHeight =
 126     m_maxHeight = wxDefaultSize.y;
 127
 128     // window are created enabled and visible by default
 129     m_isShown =
 130     m_isEnabled = true;
 131
 132     // the default event handler is just this window
 133     m_eventHandler = this;
 134
 135 #if wxUSE_VALIDATORS
 136     // no validator
 137     m_windowValidator = (wxValidator *) NULL;
 138 #endif // wxUSE_VALIDATORS
 139
 140     // the colours/fonts are default for now, so leave m_font,
 141     // m_backgroundColour and m_foregroundColour uninitialized and set those
 142     m_hasBgCol =
 143     m_hasFgCol =
 144     m_hasFont = false;
 145
 146     // no style bits
 147     m_exStyle =
 148     m_windowStyle = 0;
 149
 150 #if wxUSE_CONSTRAINTS
 151     // no constraints whatsoever
 152     m_constraints = (wxLayoutConstraints *) NULL;
 153     m_constraintsInvolvedIn = (wxWindowList *) NULL;
 154 #endif // wxUSE_CONSTRAINTS
 155
 156     m_windowSizer = (wxSizer *) NULL;
 157     m_containingSizer = (wxSizer *) NULL;
 158     m_autoLayout = false;
 159
 160 #if wxUSE_DRAG_AND_DROP
 161     m_dropTarget = (wxDropTarget *)NULL;
 162 #endif // wxUSE_DRAG_AND_DROP
 163
 164 #if wxUSE_TOOLTIPS
 165     m_tooltip = (wxToolTip *)NULL;
 166 #endif // wxUSE_TOOLTIPS
 167
 168 #if wxUSE_CARET
 169     m_caret = (wxCaret *)NULL;
 170 #endif // wxUSE_CARET
 171
 172 #if wxUSE_PALETTE
 173     m_hasCustomPalette = false;
 174 #endif // wxUSE_PALETTE
 175
 176 #if wxUSE_ACCESSIBILITY
 177     m_accessible = NULL;
 178 #endif
 179
 180     m_virtualSize = wxDefaultSize;
 181
 182     m_minVirtualWidth =
 183     m_maxVirtualWidth = wxDefaultSize.x;
 184     m_minVirtualHeight =
 185     m_maxVirtualHeight = wxDefaultSize.y;
 186
 187     m_windowVariant = wxWINDOW_VARIANT_NORMAL;
 188
 189     // Whether we're using the current theme for this window (wxGTK only for now)
 190     m_themeEnabled = false;
 191
 192     // VZ: this one shouldn't exist...
 193     m_isBeingDeleted = false;
 194 }
 195
 196 // common part of window creation process
 197 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 198                               wxWindowID id,
 199                               const wxPoint& WXUNUSED(pos),
 200                               const wxSize& WXUNUSED(size),
 201                               long style,
 202                               const wxValidator& wxVALIDATOR_PARAM(validator),
 203                               const wxString& name)
 204 {
 205 #if wxUSE_STATBOX
 206     // wxGTK doesn't allow to create controls with static box as the parent so
 207     // this will result in a crash when the program is ported to wxGTK so warn
 208     // the user about it
 209
 210     // if you get this assert, the correct solution is to create the controls
 211     // as siblings of the static box
 212     wxASSERT_MSG( !parent || !wxDynamicCast(parent, wxStaticBox),
 213                   _T("wxStaticBox can't be used as a window parent!") );
 214 #endif // wxUSE_STATBOX
 215
 216     // ids are limited to 16 bits under MSW so if you care about portability,
 217     // it's not a good idea to use ids out of this range (and negative ids are
 218     // reserved for wxWidgets own usage)
 219     wxASSERT_MSG( id == wxID_ANY || (id >= 0 && id < 32767),
 220                   _T("invalid id value") );
 221
 222     // generate a new id if the user doesn't care about it
 223     m_windowId = id == wxID_ANY ? NewControlId() : id;
 224
 225     SetName(name);
 226     SetWindowStyleFlag(style);
 227     SetParent(parent);
 228
 229 #if wxUSE_VALIDATORS
 230     SetValidator(validator);
 231 #endif // wxUSE_VALIDATORS
 232
 233     // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
 234     // have it too - like this it's possible to set it only in the top level
 235     // dialog/frame and all children will inherit it by defult
 236     if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
 237     {
 238         SetExtraStyle(GetExtraStyle() | wxWS_EX_VALIDATE_RECURSIVELY);
 239     }
 240
 241     return true;
 242 }
 243
 244 // ----------------------------------------------------------------------------
 245 // destruction
 246 // ----------------------------------------------------------------------------
 247
 248 // common clean up
 249 wxWindowBase::~wxWindowBase()
 250 {
 251     wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
 252
 253     // FIXME if these 2 cases result from programming errors in the user code
 254     //       we should probably assert here instead of silently fixing them
 255
 256     // Just in case the window has been Closed, but we're then deleting
 257     // immediately: don't leave dangling pointers.
 258     wxPendingDelete.DeleteObject(this);
 259
 260     // Just in case we've loaded a top-level window via LoadNativeDialog but
 261     // we weren't a dialog class
 262     wxTopLevelWindows.DeleteObject((wxWindow*)this);
 263
 264     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 265
 266     // reset the dangling pointer our parent window may keep to us
 267     if ( m_parent )
 268     {
 269         if ( m_parent->GetDefaultItem() == this )
 270         {
 271             m_parent->SetDefaultItem(NULL);
 272         }
 273
 274         m_parent->RemoveChild(this);
 275     }
 276
 277 #if wxUSE_CARET
 278     delete m_caret;
 279 #endif // wxUSE_CARET
 280
 281 #if wxUSE_VALIDATORS
 282     delete m_windowValidator;
 283 #endif // wxUSE_VALIDATORS
 284
 285 #if wxUSE_CONSTRAINTS
 286     // Have to delete constraints/sizer FIRST otherwise sizers may try to look
 287     // at deleted windows as they delete themselves.
 288     DeleteRelatedConstraints();
 289
 290     if ( m_constraints )
 291     {
 292         // This removes any dangling pointers to this window in other windows'
 293         // constraintsInvolvedIn lists.
 294         UnsetConstraints(m_constraints);
 295         delete m_constraints;
 296         m_constraints = NULL;
 297     }
 298 #endif // wxUSE_CONSTRAINTS
 299
 300     if ( m_containingSizer )
 301         m_containingSizer->Detach( (wxWindow*)this );
 302
 303     delete m_windowSizer;
 304
 305 #if wxUSE_DRAG_AND_DROP
 306     delete m_dropTarget;
 307 #endif // wxUSE_DRAG_AND_DROP
 308
 309 #if wxUSE_TOOLTIPS
 310     delete m_tooltip;
 311 #endif // wxUSE_TOOLTIPS
 312
 313 #if wxUSE_ACCESSIBILITY
 314     delete m_accessible;
 315 #endif
 316 }
 317
 318 bool wxWindowBase::Destroy()
 319 {
 320     delete this;
 321
 322     return true;
 323 }
 324
 325 bool wxWindowBase::Close(bool force)
 326 {
 327     wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
 328     event.SetEventObject(this);
 329     event.SetCanVeto(!force);
 330
 331     // return false if window wasn't closed because the application vetoed the
 332     // close event
 333     return GetEventHandler()->ProcessEvent(event) && !event.GetVeto();
 334 }
 335
 336 bool wxWindowBase::DestroyChildren()
 337 {
 338     wxWindowList::compatibility_iterator node;
 339     for ( ;; )
 340     {
 341         // we iterate until the list becomes empty
 342         node = GetChildren().GetFirst();
 343         if ( !node )
 344             break;
 345
 346         wxWindow *child = node->GetData();
 347
 348         // note that we really want to call delete and not ->Destroy() here
 349         // because we want to delete the child immediately, before we are
 350         // deleted, and delayed deletion would result in problems as our (top
 351         // level) child could outlive its parent
 352         delete child;
 353
 354         wxASSERT_MSG( !GetChildren().Find(child),
 355                       wxT("child didn't remove itself using RemoveChild()") );
 356     }
 357
 358     return true;
 359 }
 360
 361 // ----------------------------------------------------------------------------
 362 // size/position related methods
 363 // ----------------------------------------------------------------------------
 364
 365 // centre the window with respect to its parent in either (or both) directions
 366 void wxWindowBase::Centre(int direction)
 367 {
 368     // the position/size of the parent window or of the entire screen
 369     wxPoint posParent;
 370     int widthParent, heightParent;
 371
 372     wxWindow *parent = NULL;
 373
 374     if ( !(direction & wxCENTRE_ON_SCREEN) )
 375     {
 376         // find the parent to centre this window on: it should be the
 377         // immediate parent for the controls but the top level parent for the
 378         // top level windows (like dialogs)
 379         parent = GetParent();
 380         if ( IsTopLevel() )
 381         {
 382             while ( parent && !parent->IsTopLevel() )
 383             {
 384                 parent = parent->GetParent();
 385             }
 386         }
 387
 388         // there is no wxTopLevelWindow under wxMotif yet
 389 #ifndef __WXMOTIF__
 390         // we shouldn't center the dialog on the iconized window: under
 391         // Windows, for example, this places it completely off the screen
 392         if ( parent )
 393         {
 394             wxTopLevelWindow *winTop = wxDynamicCast(parent, wxTopLevelWindow);
 395             if ( winTop && winTop->IsIconized() )
 396             {
 397                 parent = NULL;
 398             }
 399         }
 400 #endif // __WXMOTIF__
 401
 402         // did we find the parent?
 403         if ( !parent )
 404         {
 405             // no other choice
 406             direction |= wxCENTRE_ON_SCREEN;
 407         }
 408     }
 409
 410     if ( direction & wxCENTRE_ON_SCREEN )
 411     {
 412         // centre with respect to the whole screen
 413         wxDisplaySize(&widthParent, &heightParent);
 414     }
 415     else
 416     {
 417         if ( IsTopLevel() )
 418         {
 419             // centre on the parent
 420             parent->GetSize(&widthParent, &heightParent);
 421
 422             // adjust to the parents position
 423             posParent = parent->GetPosition();
 424         }
 425         else
 426         {
 427             // centre inside the parents client rectangle
 428             parent->GetClientSize(&widthParent, &heightParent);
 429         }
 430     }
 431
 432     int width, height;
 433     GetSize(&width, &height);
 434
 435     int xNew = wxDefaultPosition.x,
 436         yNew = wxDefaultPosition.y;
 437
 438     if ( direction & wxHORIZONTAL )
 439         xNew = (widthParent - width)/2;
 440
 441     if ( direction & wxVERTICAL )
 442         yNew = (heightParent - height)/2;
 443
 444     xNew += posParent.x;
 445     yNew += posParent.y;
 446
 447     // Base size of the visible dimensions of the display
 448     // to take into account the taskbar
 449     wxRect rect = wxGetClientDisplayRect();
 450     wxSize size (rect.width,rect.height);
 451
 452     // NB: in wxMSW, negative position may not neccessary mean "out of screen",
 453     //     but it may mean that the window is placed on other than the main
 454     //     display. Therefore we only make sure centered window is on the main display
 455     //     if the parent is at least partially present here.
 456     if (posParent.x + widthParent >= 0)  // if parent is (partially) on the main display
 457     {
 458         if (xNew < 0)
 459             xNew = 0;
 460         else if (xNew+width > size.x)
 461             xNew = size.x-width-1;
 462     }
 463     if (posParent.y + heightParent >= 0)  // if parent is (partially) on the main display
 464     {
 465         if (yNew+height > size.y)
 466             yNew = size.y-height-1;
 467
 468         // Make certain that the title bar is initially visible
 469         // always, even if this would push the bottom of the
 470         // dialog of the visible area of the display
 471         if (yNew < 0)
 472             yNew = 0;
 473     }
 474
 475     // move the window to this position (keeping the old size but using
 476     // SetSize() and not Move() to allow xNew and/or yNew to be -1)
 477     SetSize(xNew, yNew, width, height, wxSIZE_ALLOW_MINUS_ONE);
 478 }
 479
 480 // fits the window around the children
 481 void wxWindowBase::Fit()
 482 {
 483     if ( GetChildren().GetCount() > 0 )
 484     {
 485         SetClientSize(DoGetBestSize());
 486     }
 487     //else: do nothing if we have no children
 488 }
 489
 490 // fits virtual size (ie. scrolled area etc.) around children
 491 void wxWindowBase::FitInside()
 492 {
 493     if ( GetChildren().GetCount() > 0 )
 494     {
 495         SetVirtualSize( GetBestVirtualSize() );
 496     }
 497 }
 498
 499 // On Mac, scrollbars are explicitly children.
 500 #ifdef __WXMAC__
 501 static bool wxHasRealChildren(const wxWindowBase* win)
 502 {
 503     int realChildCount = 0;
 504
 505     for ( wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
 506           node;
 507           node = node->GetNext() )
 508     {
 509         wxWindow *win = node->GetData();
 510         if ( !win->IsTopLevel() && win->IsShown() && !win->IsKindOf(CLASSINFO(wxScrollBar)))
 511             realChildCount ++;
 512     }
 513     return (realChildCount > 0);
 514 }
 515 #endif
 516
 517 // return the size best suited for the current window
 518 wxSize wxWindowBase::DoGetBestSize() const
 519 {
 520     if ( m_windowSizer )
 521     {
 522         return 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         return 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 windows fit inside
 568         int maxX = 0,
 569             maxY = 0;
 570
 571         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 572               node;
 573               node = node->GetNext() )
 574         {
 575             wxWindow *win = node->GetData();
 576             if ( win->IsTopLevel()  || ( ! win->IsShown() )
 577 #if wxUSE_STATUSBAR
 578                     || wxDynamicCast(win, wxStatusBar)
 579 #endif // wxUSE_STATUSBAR
 580                )
 581             {
 582                 // dialogs and frames lie in different top level windows -
 583                 // don't deal with them here; as for the status bars, they
 584                 // don't lie in the client area at all
 585                 continue;
 586             }
 587
 588             int wx, wy, ww, wh;
 589             win->GetPosition(&wx, &wy);
 590
 591             // if the window hadn't been positioned yet, assume that it is in
 592             // the origin
 593             if ( wx == wxDefaultPosition.x )
 594                 wx = 0;
 595             if ( wy == wxDefaultPosition.y )
 596                 wy = 0;
 597
 598             win->GetSize(&ww, &wh);
 599             if ( wx + ww > maxX )
 600                 maxX = wx + ww;
 601             if ( wy + wh > maxY )
 602                 maxY = wy + wh;
 603         }
 604
 605         // for compatibility with the old versions and because it really looks
 606         // slightly more pretty like this, add a pad
 607         maxX += 7;
 608         maxY += 14;
 609
 610         return wxSize(maxX, maxY);
 611     }
 612     else // ! has children
 613     {
 614         // for a generic window there is no natural best size - just use either the
 615         // minimum size if there is one, or the current size
 616         if ( GetMinSize().IsFullySpecified() )
 617             return GetMinSize();
 618         else
 619             return GetSize();
 620     }
 621 }
 622
 623 void wxWindowBase::SetBestSize(const wxSize& size)
 624 {
 625     // If the given size is incomplete then merge with the best size.
 626     wxSize sizeBest;
 627     if ( size.x == wxDefaultSize.x || size.y == wxDefaultSize.y )
 628     {
 629         sizeBest = DoGetBestSize();
 630         if ( size.x != wxDefaultSize.x )
 631             sizeBest.x = size.x;
 632         if ( size.y != wxDefaultSize.y )
 633             sizeBest.y = size.y;
 634     }
 635     else // have complete explicit size
 636     {
 637         sizeBest = size;
 638     }
 639
 640     // Change the size if needed
 641     if (GetSize() != sizeBest)
 642         SetSize(sizeBest);
 643
 644     // don't shrink the control below its best size
 645     m_minWidth = sizeBest.x;
 646     m_minHeight = sizeBest.y;
 647 }
 648
 649 // by default the origin is not shifted
 650 wxPoint wxWindowBase::GetClientAreaOrigin() const
 651 {
 652     return wxPoint(0, 0);
 653 }
 654
 655 // set the min/max size of the window
 656 void wxWindowBase::SetSizeHints(int minW, int minH,
 657                                 int maxW, int maxH,
 658                                 int WXUNUSED(incW), int WXUNUSED(incH))
 659 {
 660     // setting min width greater than max width leads to infinite loops under
 661     // X11 and generally doesn't make any sense, so don't allow it
 662     wxCHECK_RET( (minW == wxDefaultSize.x || maxW == wxDefaultSize.x || minW <= maxW) &&
 663                     (minH == wxDefaultSize.y || maxH == wxDefaultSize.y || minH <= maxH),
 664                  _T("min width/height must be less than max width/height!") );
 665
 666     m_minWidth = minW;
 667     m_maxWidth = maxW;
 668     m_minHeight = minH;
 669     m_maxHeight = maxH;
 670 }
 671
 672 void wxWindowBase::SetWindowVariant( wxWindowVariant variant )
 673 {
 674     if ( m_windowVariant != variant )
 675     {
 676         m_windowVariant = variant;
 677
 678         DoSetWindowVariant(variant);
 679     }
 680 }
 681
 682 void wxWindowBase::DoSetWindowVariant( wxWindowVariant variant )
 683 {
 684     // adjust the font height to correspond to our new variant (notice that
 685     // we're only called if something really changed)
 686     wxFont font = GetFont();
 687     int size = font.GetPointSize();
 688     switch ( variant )
 689     {
 690         case wxWINDOW_VARIANT_NORMAL:
 691             break;
 692
 693         case wxWINDOW_VARIANT_SMALL:
 694             size *= 3;
 695             size /= 4;
 696             break;
 697
 698         case wxWINDOW_VARIANT_MINI:
 699             size *= 2;
 700             size /= 3;
 701             break;
 702
 703         case wxWINDOW_VARIANT_LARGE:
 704             size *= 5;
 705             size /= 4;
 706             break;
 707
 708         default:
 709             wxFAIL_MSG(_T("unexpected window variant"));
 710             break;
 711     }
 712
 713     font.SetPointSize(size);
 714     SetFont(font);
 715 }
 716
 717 void wxWindowBase::SetVirtualSizeHints( int minW, int minH,
 718                                         int maxW, int maxH )
 719 {
 720     m_minVirtualWidth = minW;
 721     m_maxVirtualWidth = maxW;
 722     m_minVirtualHeight = minH;
 723     m_maxVirtualHeight = maxH;
 724 }
 725
 726 void wxWindowBase::DoSetVirtualSize( int x, int y )
 727 {
 728     if ( m_minVirtualWidth != wxDefaultSize.x && m_minVirtualWidth > x )
 729         x = m_minVirtualWidth;
 730     if ( m_maxVirtualWidth != wxDefaultSize.x && m_maxVirtualWidth < x )
 731         x = m_maxVirtualWidth;
 732     if ( m_minVirtualHeight != wxDefaultSize.y && m_minVirtualHeight > y )
 733         y = m_minVirtualHeight;
 734     if ( m_maxVirtualHeight != wxDefaultSize.y && m_maxVirtualHeight < y )
 735         y = m_maxVirtualHeight;
 736
 737     m_virtualSize = wxSize(x, y);
 738 }
 739
 740 wxSize wxWindowBase::DoGetVirtualSize() const
 741 {
 742     wxSize  s( GetClientSize() );
 743
 744     return wxSize( wxMax( m_virtualSize.GetWidth(), s.GetWidth() ),
 745                    wxMax( m_virtualSize.GetHeight(), s.GetHeight() ) );
 746 }
 747
 748 // ----------------------------------------------------------------------------
 749 // show/hide/enable/disable the window
 750 // ----------------------------------------------------------------------------
 751
 752 bool wxWindowBase::Show(bool show)
 753 {
 754     if ( show != m_isShown )
 755     {
 756         m_isShown = show;
 757
 758         return true;
 759     }
 760     else
 761     {
 762         return false;
 763     }
 764 }
 765
 766 bool wxWindowBase::Enable(bool enable)
 767 {
 768     if ( enable != m_isEnabled )
 769     {
 770         m_isEnabled = enable;
 771
 772         return true;
 773     }
 774     else
 775     {
 776         return false;
 777     }
 778 }
 779 // ----------------------------------------------------------------------------
 780 // RTTI
 781 // ----------------------------------------------------------------------------
 782
 783 bool wxWindowBase::IsTopLevel() const
 784 {
 785     return false;
 786 }
 787
 788 // ----------------------------------------------------------------------------
 789 // reparenting the window
 790 // ----------------------------------------------------------------------------
 791
 792 void wxWindowBase::AddChild(wxWindowBase *child)
 793 {
 794     wxCHECK_RET( child, wxT("can't add a NULL child") );
 795
 796     // this should never happen and it will lead to a crash later if it does
 797     // because RemoveChild() will remove only one node from the children list
 798     // and the other(s) one(s) will be left with dangling pointers in them
 799     wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), _T("AddChild() called twice") );
 800
 801     GetChildren().Append((wxWindow*)child);
 802     child->SetParent(this);
 803 }
 804
 805 void wxWindowBase::RemoveChild(wxWindowBase *child)
 806 {
 807     wxCHECK_RET( child, wxT("can't remove a NULL child") );
 808
 809     GetChildren().DeleteObject((wxWindow *)child);
 810     child->SetParent(NULL);
 811 }
 812
 813 bool wxWindowBase::Reparent(wxWindowBase *newParent)
 814 {
 815     wxWindow *oldParent = GetParent();
 816     if ( newParent == oldParent )
 817     {
 818         // nothing done
 819         return false;
 820     }
 821
 822     // unlink this window from the existing parent.
 823     if ( oldParent )
 824     {
 825         oldParent->RemoveChild(this);
 826     }
 827     else
 828     {
 829         wxTopLevelWindows.DeleteObject((wxWindow *)this);
 830     }
 831
 832     // add it to the new one
 833     if ( newParent )
 834     {
 835         newParent->AddChild(this);
 836     }
 837     else
 838     {
 839         wxTopLevelWindows.Append((wxWindow *)this);
 840     }
 841
 842     return true;
 843 }
 844
 845 // ----------------------------------------------------------------------------
 846 // event handler stuff
 847 // ----------------------------------------------------------------------------
 848
 849 void wxWindowBase::PushEventHandler(wxEvtHandler *handler)
 850 {
 851     wxEvtHandler *handlerOld = GetEventHandler();
 852
 853     handler->SetNextHandler(handlerOld);
 854
 855     if ( handlerOld )
 856         GetEventHandler()->SetPreviousHandler(handler);
 857
 858     SetEventHandler(handler);
 859 }
 860
 861 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
 862 {
 863     wxEvtHandler *handlerA = GetEventHandler();
 864     if ( handlerA )
 865     {
 866         wxEvtHandler *handlerB = handlerA->GetNextHandler();
 867         handlerA->SetNextHandler((wxEvtHandler *)NULL);
 868
 869         if ( handlerB )
 870             handlerB->SetPreviousHandler((wxEvtHandler *)NULL);
 871         SetEventHandler(handlerB);
 872
 873         if ( deleteHandler )
 874         {
 875             delete handlerA;
 876             handlerA = (wxEvtHandler *)NULL;
 877         }
 878     }
 879
 880     return handlerA;
 881 }
 882
 883 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handler)
 884 {
 885     wxCHECK_MSG( handler, false, _T("RemoveEventHandler(NULL) called") );
 886
 887     wxEvtHandler *handlerPrev = NULL,
 888                  *handlerCur = GetEventHandler();
 889     while ( handlerCur )
 890     {
 891         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
 892
 893         if ( handlerCur == handler )
 894         {
 895             if ( handlerPrev )
 896             {
 897                 handlerPrev->SetNextHandler(handlerNext);
 898             }
 899             else
 900             {
 901                 SetEventHandler(handlerNext);
 902             }
 903
 904             if ( handlerNext )
 905             {
 906                 handlerNext->SetPreviousHandler ( handlerPrev );
 907             }
 908
 909             handler->SetNextHandler(NULL);
 910             handler->SetPreviousHandler(NULL);
 911
 912             return true;
 913         }
 914
 915         handlerPrev = handlerCur;
 916         handlerCur = handlerNext;
 917     }
 918
 919     wxFAIL_MSG( _T("where has the event handler gone?") );
 920
 921     return false;
 922 }
 923
 924 // ----------------------------------------------------------------------------
 925 // colours, fonts &c
 926 // ----------------------------------------------------------------------------
 927
 928 void wxWindowBase::InheritAttributes()
 929 {
 930     const wxWindowBase * const parent = GetParent();
 931     if ( !parent )
 932         return;
 933
 934     // we only inherit attributes which had been explicitly set for the parent
 935     // which ensures that this only happens if the user really wants it and
 936     // not by default which wouldn't make any sense in modern GUIs where the
 937     // controls don't all use the same fonts (nor colours)
 938     if ( parent->m_hasFont && !m_hasFont )
 939         SetFont(parent->GetFont());
 940
 941     // in addition, there is a possibility to explicitly forbid inheriting
 942     // colours at each class level by overriding ShouldInheritColours()
 943     if ( ShouldInheritColours() )
 944     {
 945         if ( parent->m_hasFgCol && !m_hasFgCol )
 946             SetForegroundColour(parent->GetForegroundColour());
 947
 948         if ( parent->m_hasBgCol && !m_hasBgCol )
 949             SetBackgroundColour(parent->GetBackgroundColour());
 950     }
 951 }
 952
 953 /* static */ wxVisualAttributes
 954 wxWindowBase::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 955 {
 956     // it is important to return valid values for all attributes from here,
 957     // GetXXX() below rely on this
 958     wxVisualAttributes attrs;
 959     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
 960     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
 961     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
 962
 963     return attrs;
 964 }
 965
 966 wxColour wxWindowBase::GetBackgroundColour() const
 967 {
 968     if ( !m_backgroundColour.Ok() )
 969     {
 970         wxASSERT_MSG( !m_hasBgCol, _T("we have invalid explicit bg colour?") );
 971
 972         // get our default background colour
 973         wxColour colBg = GetDefaultAttributes().colBg;
 974
 975         // we must return some valid colour to avoid redoing this every time
 976         // and also to avoid surprizing the applications written for older
 977         // wxWidgets versions where GetBackgroundColour() always returned
 978         // something -- so give them something even if it doesn't make sense
 979         // for this window (e.g. it has a themed background)
 980         if ( !colBg.Ok() )
 981             colBg = GetClassDefaultAttributes().colBg;
 982
 983         // cache it for the next call
 984         wxConstCast(this, wxWindowBase)->m_backgroundColour = colBg;
 985     }
 986
 987     return m_backgroundColour;
 988 }
 989
 990 wxColour wxWindowBase::GetForegroundColour() const
 991 {
 992     // logic is the same as above
 993     if ( !m_hasFgCol && !m_foregroundColour.Ok() )
 994     {
 995         wxASSERT_MSG( !m_hasFgCol, _T("we have invalid explicit fg colour?") );
 996
 997         wxColour colFg = GetDefaultAttributes().colFg;
 998
 999         if ( !colFg.Ok() )
1000             colFg = GetClassDefaultAttributes().colFg;
1001
1002         wxConstCast(this, wxWindowBase)->m_foregroundColour = colFg;
1003     }
1004
1005     return m_foregroundColour;
1006 }
1007
1008 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
1009 {
1010     if ( colour == m_backgroundColour )
1011         return false;
1012
1013     m_hasBgCol = colour.Ok();
1014     m_backgroundColour = colour;
1015     SetThemeEnabled( !m_hasBgCol && !m_foregroundColour.Ok() );
1016     return true;
1017 }
1018
1019 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
1020 {
1021     if (colour == m_foregroundColour )
1022         return false;
1023
1024     m_hasFgCol = colour.Ok();
1025     m_foregroundColour = colour;
1026     SetThemeEnabled( !m_hasFgCol && !m_backgroundColour.Ok() );
1027     return true;
1028 }
1029
1030 bool wxWindowBase::SetCursor(const wxCursor& cursor)
1031 {
1032     // setting an invalid cursor is ok, it means that we don't have any special
1033     // cursor
1034     if ( m_cursor == cursor )
1035     {
1036         // no change
1037         return false;
1038     }
1039
1040     m_cursor = cursor;
1041
1042     return true;
1043 }
1044
1045 wxFont& wxWindowBase::DoGetFont() const
1046 {
1047     // logic is the same as in GetBackgroundColour()
1048     if ( !m_font.Ok() )
1049     {
1050         wxASSERT_MSG( !m_hasFont, _T("we have invalid explicit font?") );
1051
1052         wxFont font = GetDefaultAttributes().font;
1053         if ( !font.Ok() )
1054             font = GetClassDefaultAttributes().font;
1055
1056         wxConstCast(this, wxWindowBase)->m_font = font;
1057     }
1058
1059     // cast is here for non-const GetFont() convenience
1060     return wxConstCast(this, wxWindowBase)->m_font;
1061 }
1062
1063 bool wxWindowBase::SetFont(const wxFont& font)
1064 {
1065     if ( font == m_font )
1066     {
1067         // no change
1068         return false;
1069     }
1070
1071     m_font = font;
1072     m_hasFont = font.Ok();
1073
1074     return true;
1075 }
1076
1077 #if wxUSE_PALETTE
1078
1079 void wxWindowBase::SetPalette(const wxPalette& pal)
1080 {
1081     m_hasCustomPalette = true;
1082     m_palette = pal;
1083
1084     // VZ: can anyone explain me what do we do here?
1085     wxWindowDC d((wxWindow *) this);
1086     d.SetPalette(pal);
1087 }
1088
1089 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
1090 {
1091     wxWindow *win = (wxWindow *)this;
1092     while ( win && !win->HasCustomPalette() )
1093     {
1094         win = win->GetParent();
1095     }
1096
1097     return win;
1098 }
1099
1100 #endif // wxUSE_PALETTE
1101
1102 #if wxUSE_CARET
1103 void wxWindowBase::SetCaret(wxCaret *caret)
1104 {
1105     if ( m_caret )
1106     {
1107         delete m_caret;
1108     }
1109
1110     m_caret = caret;
1111
1112     if ( m_caret )
1113     {
1114         wxASSERT_MSG( m_caret->GetWindow() == this,
1115                       wxT("caret should be created associated to this window") );
1116     }
1117 }
1118 #endif // wxUSE_CARET
1119
1120 #if wxUSE_VALIDATORS
1121 // ----------------------------------------------------------------------------
1122 // validators
1123 // ----------------------------------------------------------------------------
1124
1125 void wxWindowBase::SetValidator(const wxValidator& validator)
1126 {
1127     if ( m_windowValidator )
1128         delete m_windowValidator;
1129
1130     m_windowValidator = (wxValidator *)validator.Clone();
1131
1132     if ( m_windowValidator )
1133         m_windowValidator->SetWindow(this);
1134 }
1135 #endif // wxUSE_VALIDATORS
1136
1137 // ----------------------------------------------------------------------------
1138 // update region stuff
1139 // ----------------------------------------------------------------------------
1140
1141 wxRect wxWindowBase::GetUpdateClientRect() const
1142 {
1143     wxRegion rgnUpdate = GetUpdateRegion();
1144     rgnUpdate.Intersect(GetClientRect());
1145     wxRect rectUpdate = rgnUpdate.GetBox();
1146     wxPoint ptOrigin = GetClientAreaOrigin();
1147     rectUpdate.x -= ptOrigin.x;
1148     rectUpdate.y -= ptOrigin.y;
1149
1150     return rectUpdate;
1151 }
1152
1153 bool wxWindowBase::IsExposed(int x, int y) const
1154 {
1155     return m_updateRegion.Contains(x, y) != wxOutRegion;
1156 }
1157
1158 bool wxWindowBase::IsExposed(int x, int y, int w, int h) const
1159 {
1160     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
1161 }
1162
1163 void wxWindowBase::ClearBackground()
1164 {
1165     // wxGTK uses its own version, no need to add never used code
1166 #ifndef __WXGTK__
1167     wxClientDC dc((wxWindow *)this);
1168     wxBrush brush(GetBackgroundColour(), wxSOLID);
1169     dc.SetBackground(brush);
1170     dc.Clear();
1171 #endif // __WXGTK__
1172 }
1173
1174 // ----------------------------------------------------------------------------
1175 // find child window by id or name
1176 // ----------------------------------------------------------------------------
1177
1178 wxWindow *wxWindowBase::FindWindow( long id )
1179 {
1180     if ( id == m_windowId )
1181         return (wxWindow *)this;
1182
1183     wxWindowBase *res = (wxWindow *)NULL;
1184     wxWindowList::compatibility_iterator node;
1185     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1186     {
1187         wxWindowBase *child = node->GetData();
1188         res = child->FindWindow( id );
1189     }
1190
1191     return (wxWindow *)res;
1192 }
1193
1194 wxWindow *wxWindowBase::FindWindow( const wxString& name )
1195 {
1196     if ( name == m_windowName )
1197         return (wxWindow *)this;
1198
1199     wxWindowBase *res = (wxWindow *)NULL;
1200     wxWindowList::compatibility_iterator node;
1201     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1202     {
1203         wxWindow *child = node->GetData();
1204         res = child->FindWindow(name);
1205     }
1206
1207     return (wxWindow *)res;
1208 }
1209
1210
1211 // find any window by id or name or label: If parent is non-NULL, look through
1212 // children for a label or title matching the specified string. If NULL, look
1213 // through all top-level windows.
1214 //
1215 // to avoid duplicating code we reuse the same helper function but with
1216 // different comparators
1217
1218 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1219                                 const wxString& label, long id);
1220
1221 static
1222 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1223                            long WXUNUSED(id))
1224 {
1225     return win->GetLabel() == label;
1226 }
1227
1228 static
1229 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1230                           long WXUNUSED(id))
1231 {
1232     return win->GetName() == label;
1233 }
1234
1235 static
1236 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1237                         long id)
1238 {
1239     return win->GetId() == id;
1240 }
1241
1242 // recursive helper for the FindWindowByXXX() functions
1243 static
1244 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1245                                   const wxString& label,
1246                                   long id,
1247                                   wxFindWindowCmp cmp)
1248 {
1249     if ( parent )
1250     {
1251         // see if this is the one we're looking for
1252         if ( (*cmp)(parent, label, id) )
1253             return (wxWindow *)parent;
1254
1255         // It wasn't, so check all its children
1256         for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
1257               node;
1258               node = node->GetNext() )
1259         {
1260             // recursively check each child
1261             wxWindow *win = (wxWindow *)node->GetData();
1262             wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1263             if (retwin)
1264                 return retwin;
1265         }
1266     }
1267
1268     // Not found
1269     return NULL;
1270 }
1271
1272 // helper for FindWindowByXXX()
1273 static
1274 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1275                              const wxString& label,
1276                              long id,
1277                              wxFindWindowCmp cmp)
1278 {
1279     if ( parent )
1280     {
1281         // just check parent and all its children
1282         return wxFindWindowRecursively(parent, label, id, cmp);
1283     }
1284
1285     // start at very top of wx's windows
1286     for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1287           node;
1288           node = node->GetNext() )
1289     {
1290         // recursively check each window & its children
1291         wxWindow *win = node->GetData();
1292         wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1293         if (retwin)
1294             return retwin;
1295     }
1296
1297     return NULL;
1298 }
1299
1300 /* static */
1301 wxWindow *
1302 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1303 {
1304     return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1305 }
1306
1307 /* static */
1308 wxWindow *
1309 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1310 {
1311     wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1312
1313     if ( !win )
1314     {
1315         // fall back to the label
1316         win = FindWindowByLabel(title, parent);
1317     }
1318
1319     return win;
1320 }
1321
1322 /* static */
1323 wxWindow *
1324 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1325 {
1326     return wxFindWindowHelper(parent, _T(""), id, wxFindWindowCmpIds);
1327 }
1328
1329 // ----------------------------------------------------------------------------
1330 // dialog oriented functions
1331 // ----------------------------------------------------------------------------
1332
1333 void wxWindowBase::MakeModal(bool modal)
1334 {
1335     // Disable all other windows
1336     if ( IsTopLevel() )
1337     {
1338         wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1339         while (node)
1340         {
1341             wxWindow *win = node->GetData();
1342             if (win != this)
1343                 win->Enable(!modal);
1344
1345             node = node->GetNext();
1346         }
1347     }
1348 }
1349
1350 bool wxWindowBase::Validate()
1351 {
1352 #if wxUSE_VALIDATORS
1353     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1354
1355     wxWindowList::compatibility_iterator node;
1356     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1357     {
1358         wxWindowBase *child = node->GetData();
1359         wxValidator *validator = child->GetValidator();
1360         if ( validator && !validator->Validate((wxWindow *)this) )
1361         {
1362             return false;
1363         }
1364
1365         if ( recurse && !child->Validate() )
1366         {
1367             return false;
1368         }
1369     }
1370 #endif // wxUSE_VALIDATORS
1371
1372     return true;
1373 }
1374
1375 bool wxWindowBase::TransferDataToWindow()
1376 {
1377 #if wxUSE_VALIDATORS
1378     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1379
1380     wxWindowList::compatibility_iterator node;
1381     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1382     {
1383         wxWindowBase *child = node->GetData();
1384         wxValidator *validator = child->GetValidator();
1385         if ( validator && !validator->TransferToWindow() )
1386         {
1387             wxLogWarning(_("Could not transfer data to window"));
1388 #if wxUSE_LOG
1389             wxLog::FlushActive();
1390 #endif // wxUSE_LOG
1391
1392             return false;
1393         }
1394
1395         if ( recurse )
1396         {
1397             if ( !child->TransferDataToWindow() )
1398             {
1399                 // warning already given
1400                 return false;
1401             }
1402         }
1403     }
1404 #endif // wxUSE_VALIDATORS
1405
1406     return true;
1407 }
1408
1409 bool wxWindowBase::TransferDataFromWindow()
1410 {
1411 #if wxUSE_VALIDATORS
1412     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1413
1414     wxWindowList::compatibility_iterator node;
1415     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1416     {
1417         wxWindow *child = node->GetData();
1418         wxValidator *validator = child->GetValidator();
1419         if ( validator && !validator->TransferFromWindow() )
1420         {
1421             // nop warning here because the application is supposed to give
1422             // one itself - we don't know here what might have gone wrongly
1423
1424             return false;
1425         }
1426
1427         if ( recurse )
1428         {
1429             if ( !child->TransferDataFromWindow() )
1430             {
1431                 // warning already given
1432                 return false;
1433             }
1434         }
1435     }
1436 #endif // wxUSE_VALIDATORS
1437
1438     return true;
1439 }
1440
1441 void wxWindowBase::InitDialog()
1442 {
1443     wxInitDialogEvent event(GetId());
1444     event.SetEventObject( this );
1445     GetEventHandler()->ProcessEvent(event);
1446 }
1447
1448 // ----------------------------------------------------------------------------
1449 // context-sensitive help support
1450 // ----------------------------------------------------------------------------
1451
1452 #if wxUSE_HELP
1453
1454 // associate this help text with this window
1455 void wxWindowBase::SetHelpText(const wxString& text)
1456 {
1457     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1458     if ( helpProvider )
1459     {
1460         helpProvider->AddHelp(this, text);
1461     }
1462 }
1463
1464 // associate this help text with all windows with the same id as this
1465 // one
1466 void wxWindowBase::SetHelpTextForId(const wxString& text)
1467 {
1468     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1469     if ( helpProvider )
1470     {
1471         helpProvider->AddHelp(GetId(), text);
1472     }
1473 }
1474
1475 // get the help string associated with this window (may be empty)
1476 wxString wxWindowBase::GetHelpText() const
1477 {
1478     wxString text;
1479     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1480     if ( helpProvider )
1481     {
1482         text = helpProvider->GetHelp(this);
1483     }
1484
1485     return text;
1486 }
1487
1488 // show help for this window
1489 void wxWindowBase::OnHelp(wxHelpEvent& event)
1490 {
1491     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1492     if ( helpProvider )
1493     {
1494         if ( helpProvider->ShowHelp(this) )
1495         {
1496             // skip the event.Skip() below
1497             return;
1498         }
1499     }
1500
1501     event.Skip();
1502 }
1503
1504 #endif // wxUSE_HELP
1505
1506 // ----------------------------------------------------------------------------
1507 // tooltipsroot.Replace("\\", "/");
1508 // ----------------------------------------------------------------------------
1509
1510 #if wxUSE_TOOLTIPS
1511
1512 void wxWindowBase::SetToolTip( const wxString &tip )
1513 {
1514     // don't create the new tooltip if we already have one
1515     if ( m_tooltip )
1516     {
1517         m_tooltip->SetTip( tip );
1518     }
1519     else
1520     {
1521         SetToolTip( new wxToolTip( tip ) );
1522     }
1523
1524     // setting empty tooltip text does not remove the tooltip any more - use
1525     // SetToolTip((wxToolTip *)NULL) for this
1526 }
1527
1528 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1529 {
1530     if ( m_tooltip )
1531         delete m_tooltip;
1532
1533     m_tooltip = tooltip;
1534 }
1535
1536 #endif // wxUSE_TOOLTIPS
1537
1538 // ----------------------------------------------------------------------------
1539 // constraints and sizers
1540 // ----------------------------------------------------------------------------
1541
1542 #if wxUSE_CONSTRAINTS
1543
1544 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1545 {
1546     if ( m_constraints )
1547     {
1548         UnsetConstraints(m_constraints);
1549         delete m_constraints;
1550     }
1551     m_constraints = constraints;
1552     if ( m_constraints )
1553     {
1554         // Make sure other windows know they're part of a 'meaningful relationship'
1555         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1556             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1557         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1558             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1559         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1560             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1561         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1562             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1563         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1564             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1565         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1566             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1567         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1568             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1569         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1570             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1571     }
1572 }
1573
1574 // This removes any dangling pointers to this window in other windows'
1575 // constraintsInvolvedIn lists.
1576 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1577 {
1578     if ( c )
1579     {
1580         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1581             c->left.GetOtherWindow()->RemoveConstraintReference(this);
1582         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1583             c->top.GetOtherWindow()->RemoveConstraintReference(this);
1584         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1585             c->right.GetOtherWindow()->RemoveConstraintReference(this);
1586         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1587             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1588         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1589             c->width.GetOtherWindow()->RemoveConstraintReference(this);
1590         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1591             c->height.GetOtherWindow()->RemoveConstraintReference(this);
1592         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1593             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
1594         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
1595             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
1596     }
1597 }
1598
1599 // Back-pointer to other windows we're involved with, so if we delete this
1600 // window, we must delete any constraints we're involved with.
1601 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
1602 {
1603     if ( !m_constraintsInvolvedIn )
1604         m_constraintsInvolvedIn = new wxWindowList;
1605     if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
1606         m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
1607 }
1608
1609 // REMOVE back-pointer to other windows we're involved with.
1610 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
1611 {
1612     if ( m_constraintsInvolvedIn )
1613         m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
1614 }
1615
1616 // Reset any constraints that mention this window
1617 void wxWindowBase::DeleteRelatedConstraints()
1618 {
1619     if ( m_constraintsInvolvedIn )
1620     {
1621         wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
1622         while (node)
1623         {
1624             wxWindow *win = node->GetData();
1625             wxLayoutConstraints *constr = win->GetConstraints();
1626
1627             // Reset any constraints involving this window
1628             if ( constr )
1629             {
1630                 constr->left.ResetIfWin(this);
1631                 constr->top.ResetIfWin(this);
1632                 constr->right.ResetIfWin(this);
1633                 constr->bottom.ResetIfWin(this);
1634                 constr->width.ResetIfWin(this);
1635                 constr->height.ResetIfWin(this);
1636                 constr->centreX.ResetIfWin(this);
1637                 constr->centreY.ResetIfWin(this);
1638             }
1639
1640             wxWindowList::compatibility_iterator next = node->GetNext();
1641             m_constraintsInvolvedIn->Erase(node);
1642             node = next;
1643         }
1644
1645         delete m_constraintsInvolvedIn;
1646         m_constraintsInvolvedIn = (wxWindowList *) NULL;
1647     }
1648 }
1649
1650 #endif // wxUSE_CONSTRAINTS
1651
1652 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
1653 {
1654     if ( sizer == m_windowSizer)
1655         return;
1656
1657     if ( deleteOld )
1658         delete m_windowSizer;
1659
1660     m_windowSizer = sizer;
1661
1662     SetAutoLayout( sizer != NULL );
1663 }
1664
1665 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
1666 {
1667     SetSizer( sizer, deleteOld );
1668     sizer->SetSizeHints( (wxWindow*) this );
1669 }
1670
1671
1672 void wxWindowBase::SetContainingSizer(wxSizer* sizer)
1673 {
1674     // adding a window to a sizer twice is going to result in fatal and
1675     // hard to debug problems later because when deleting the second
1676     // associated wxSizerItem we're going to dereference a dangling
1677     // pointer; so try to detect this as early as possible
1678     wxASSERT_MSG( !sizer || m_containingSizer != sizer,
1679                   _T("Adding a window to the same sizer twice?") );
1680
1681     m_containingSizer = sizer;
1682 }
1683
1684 #if wxUSE_CONSTRAINTS
1685
1686 void wxWindowBase::SatisfyConstraints()
1687 {
1688     wxLayoutConstraints *constr = GetConstraints();
1689     bool wasOk = constr && constr->AreSatisfied();
1690
1691     ResetConstraints();   // Mark all constraints as unevaluated
1692
1693     int noChanges = 1;
1694
1695     // if we're a top level panel (i.e. our parent is frame/dialog), our
1696     // own constraints will never be satisfied any more unless we do it
1697     // here
1698     if ( wasOk )
1699     {
1700         while ( noChanges > 0 )
1701         {
1702             LayoutPhase1(&noChanges);
1703         }
1704     }
1705
1706     LayoutPhase2(&noChanges);
1707 }
1708
1709 #endif // wxUSE_CONSTRAINTS
1710
1711 bool wxWindowBase::Layout()
1712 {
1713     // If there is a sizer, use it instead of the constraints
1714     if ( GetSizer() )
1715     {
1716         int w, h;
1717         GetVirtualSize(&w, &h);
1718         GetSizer()->SetDimension( 0, 0, w, h );
1719     }
1720 #if wxUSE_CONSTRAINTS
1721     else
1722     {
1723         SatisfyConstraints(); // Find the right constraints values
1724         SetConstraintSizes(); // Recursively set the real window sizes
1725     }
1726 #endif
1727
1728     return true;
1729 }
1730
1731 #if wxUSE_CONSTRAINTS
1732
1733 // first phase of the constraints evaluation: set our own constraints
1734 bool wxWindowBase::LayoutPhase1(int *noChanges)
1735 {
1736     wxLayoutConstraints *constr = GetConstraints();
1737
1738     return !constr || constr->SatisfyConstraints(this, noChanges);
1739 }
1740
1741 // second phase: set the constraints for our children
1742 bool wxWindowBase::LayoutPhase2(int *noChanges)
1743 {
1744     *noChanges = 0;
1745
1746     // Layout children
1747     DoPhase(1);
1748
1749     // Layout grand children
1750     DoPhase(2);
1751
1752     return true;
1753 }
1754
1755 // Do a phase of evaluating child constraints
1756 bool wxWindowBase::DoPhase(int phase)
1757 {
1758     // the list containing the children for which the constraints are already
1759     // set correctly
1760     wxWindowList succeeded;
1761
1762     // the max number of iterations we loop before concluding that we can't set
1763     // the constraints
1764     static const int maxIterations = 500;
1765
1766     for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
1767     {
1768         int noChanges = 0;
1769
1770         // loop over all children setting their constraints
1771         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1772               node;
1773               node = node->GetNext() )
1774         {
1775             wxWindow *child = node->GetData();
1776             if ( child->IsTopLevel() )
1777             {
1778                 // top level children are not inside our client area
1779                 continue;
1780             }
1781
1782             if ( !child->GetConstraints() || succeeded.Find(child) )
1783             {
1784                 // this one is either already ok or nothing we can do about it
1785                 continue;
1786             }
1787
1788             int tempNoChanges = 0;
1789             bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
1790                                       : child->LayoutPhase2(&tempNoChanges);
1791             noChanges += tempNoChanges;
1792
1793             if ( success )
1794             {
1795                 succeeded.Append(child);
1796             }
1797         }
1798
1799         if ( !noChanges )
1800         {
1801             // constraints are set
1802             break;
1803         }
1804     }
1805
1806     return true;
1807 }
1808
1809 void wxWindowBase::ResetConstraints()
1810 {
1811     wxLayoutConstraints *constr = GetConstraints();
1812     if ( constr )
1813     {
1814         constr->left.SetDone(false);
1815         constr->top.SetDone(false);
1816         constr->right.SetDone(false);
1817         constr->bottom.SetDone(false);
1818         constr->width.SetDone(false);
1819         constr->height.SetDone(false);
1820         constr->centreX.SetDone(false);
1821         constr->centreY.SetDone(false);
1822     }
1823
1824     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1825     while (node)
1826     {
1827         wxWindow *win = node->GetData();
1828         if ( !win->IsTopLevel() )
1829             win->ResetConstraints();
1830         node = node->GetNext();
1831     }
1832 }
1833
1834 // Need to distinguish between setting the 'fake' size for windows and sizers,
1835 // and setting the real values.
1836 void wxWindowBase::SetConstraintSizes(bool recurse)
1837 {
1838     wxLayoutConstraints *constr = GetConstraints();
1839     if ( constr && constr->AreSatisfied() )
1840     {
1841         int x = constr->left.GetValue();
1842         int y = constr->top.GetValue();
1843         int w = constr->width.GetValue();
1844         int h = constr->height.GetValue();
1845
1846         if ( (constr->width.GetRelationship() != wxAsIs ) ||
1847              (constr->height.GetRelationship() != wxAsIs) )
1848         {
1849             SetSize(x, y, w, h);
1850         }
1851         else
1852         {
1853             // If we don't want to resize this window, just move it...
1854             Move(x, y);
1855         }
1856     }
1857     else if ( constr )
1858     {
1859         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
1860                    GetClassInfo()->GetClassName(),
1861                    GetName().c_str());
1862     }
1863
1864     if ( recurse )
1865     {
1866         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1867         while (node)
1868         {
1869             wxWindow *win = node->GetData();
1870             if ( !win->IsTopLevel() && win->GetConstraints() )
1871                 win->SetConstraintSizes();
1872             node = node->GetNext();
1873         }
1874     }
1875 }
1876
1877 // Only set the size/position of the constraint (if any)
1878 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
1879 {
1880     wxLayoutConstraints *constr = GetConstraints();
1881     if ( constr )
1882     {
1883         if ( x != wxDefaultPosition.x )
1884         {
1885             constr->left.SetValue(x);
1886             constr->left.SetDone(true);
1887         }
1888         if ( y != wxDefaultPosition.y )
1889         {
1890             constr->top.SetValue(y);
1891             constr->top.SetDone(true);
1892         }
1893         if ( w != wxDefaultSize.x )
1894         {
1895             constr->width.SetValue(w);
1896             constr->width.SetDone(true);
1897         }
1898         if ( h != wxDefaultSize.y )
1899         {
1900             constr->height.SetValue(h);
1901             constr->height.SetDone(true);
1902         }
1903     }
1904 }
1905
1906 void wxWindowBase::MoveConstraint(int x, int y)
1907 {
1908     wxLayoutConstraints *constr = GetConstraints();
1909     if ( constr )
1910     {
1911         if ( x != wxDefaultPosition.x )
1912         {
1913             constr->left.SetValue(x);
1914             constr->left.SetDone(true);
1915         }
1916         if ( y != wxDefaultPosition.y )
1917         {
1918             constr->top.SetValue(y);
1919             constr->top.SetDone(true);
1920         }
1921     }
1922 }
1923
1924 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
1925 {
1926     wxLayoutConstraints *constr = GetConstraints();
1927     if ( constr )
1928     {
1929         *w = constr->width.GetValue();
1930         *h = constr->height.GetValue();
1931     }
1932     else
1933         GetSize(w, h);
1934 }
1935
1936 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
1937 {
1938     wxLayoutConstraints *constr = GetConstraints();
1939     if ( constr )
1940     {
1941         *w = constr->width.GetValue();
1942         *h = constr->height.GetValue();
1943     }
1944     else
1945         GetClientSize(w, h);
1946 }
1947
1948 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
1949 {
1950     wxLayoutConstraints *constr = GetConstraints();
1951     if ( constr )
1952     {
1953         *x = constr->left.GetValue();
1954         *y = constr->top.GetValue();
1955     }
1956     else
1957         GetPosition(x, y);
1958 }
1959
1960 #endif // wxUSE_CONSTRAINTS
1961
1962 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
1963 {
1964     // don't do it for the dialogs/frames - they float independently of their
1965     // parent
1966     if ( !IsTopLevel() )
1967     {
1968         wxWindow *parent = GetParent();
1969         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
1970         {
1971             wxPoint pt(parent->GetClientAreaOrigin());
1972             x += pt.x;
1973             y += pt.y;
1974         }
1975     }
1976 }
1977
1978 // ----------------------------------------------------------------------------
1979 // do Update UI processing for child controls
1980 // ----------------------------------------------------------------------------
1981
1982 void wxWindowBase::UpdateWindowUI(long flags)
1983 {
1984     wxUpdateUIEvent event(GetId());
1985     event.m_eventObject = this;
1986
1987     if ( GetEventHandler()->ProcessEvent(event) )
1988     {
1989         DoUpdateWindowUI(event);
1990     }
1991
1992     if (flags & wxUPDATE_UI_RECURSE)
1993     {
1994         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1995         while (node)
1996         {
1997             wxWindow* child = (wxWindow*) node->GetData();
1998             child->UpdateWindowUI(flags);
1999             node = node->GetNext();
2000         }
2001     }
2002 }
2003
2004 // do the window-specific processing after processing the update event
2005 // TODO: take specific knowledge out of this function and
2006 // put in each control's base class. Unfortunately we don't
2007 // yet have base implementation files for wxCheckBox and wxRadioButton.
2008 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
2009 {
2010     if ( event.GetSetEnabled() )
2011         Enable(event.GetEnabled());
2012
2013 #if wxUSE_CONTROLS
2014     if ( event.GetSetText() )
2015     {
2016         wxControl *control = wxDynamicCastThis(wxControl);
2017         if ( control )
2018         {
2019             if ( event.GetText() != control->GetLabel() )
2020                 control->SetLabel(event.GetText());
2021         }
2022 #if wxUSE_CHECKBOX
2023         wxCheckBox *checkbox = wxDynamicCastThis(wxCheckBox);
2024         if ( checkbox )
2025         {
2026             if ( event.GetSetChecked() )
2027                 checkbox->SetValue(event.GetChecked());
2028         }
2029 #endif // wxUSE_CHECKBOX
2030
2031 #if wxUSE_RADIOBTN
2032         wxRadioButton *radiobtn = wxDynamicCastThis(wxRadioButton);
2033         if ( radiobtn )
2034         {
2035             if ( event.GetSetChecked() )
2036                 radiobtn->SetValue(event.GetChecked());
2037         }
2038 #endif // wxUSE_RADIOBTN
2039     }
2040 #endif
2041 }
2042
2043 #if 0
2044 // call internal idle recursively
2045 // may be obsolete (wait until OnIdle scheme stabilises)
2046 void wxWindowBase::ProcessInternalIdle()
2047 {
2048     OnInternalIdle();
2049
2050     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2051     while (node)
2052     {
2053         wxWindow *child = node->GetData();
2054         child->ProcessInternalIdle();
2055         node = node->GetNext();
2056     }
2057 }
2058 #endif
2059
2060 // ----------------------------------------------------------------------------
2061 // dialog units translations
2062 // ----------------------------------------------------------------------------
2063
2064 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
2065 {
2066     int charWidth = GetCharWidth();
2067     int charHeight = GetCharHeight();
2068     wxPoint pt2(-1, -1);
2069     if (pt.x != -1)
2070         pt2.x = (int) ((pt.x * 4) / charWidth);
2071     if (pt.y != -1)
2072         pt2.y = (int) ((pt.y * 8) / charHeight);
2073
2074     return pt2;
2075 }
2076
2077 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
2078 {
2079     int charWidth = GetCharWidth();
2080     int charHeight = GetCharHeight();
2081     wxPoint pt2(-1, -1);
2082     if (pt.x != -1)
2083         pt2.x = (int) ((pt.x * charWidth) / 4);
2084     if (pt.y != -1)
2085         pt2.y = (int) ((pt.y * charHeight) / 8);
2086
2087     return pt2;
2088 }
2089
2090 // ----------------------------------------------------------------------------
2091 // event handlers
2092 // ----------------------------------------------------------------------------
2093
2094 // propagate the colour change event to the subwindows
2095 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
2096 {
2097     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2098     while ( node )
2099     {
2100         // Only propagate to non-top-level windows
2101         wxWindow *win = node->GetData();
2102         if ( !win->IsTopLevel() )
2103         {
2104             wxSysColourChangedEvent event2;
2105             event.m_eventObject = win;
2106             win->GetEventHandler()->ProcessEvent(event2);
2107         }
2108
2109         node = node->GetNext();
2110     }
2111 }
2112
2113 // the default action is to populate dialog with data when it's created,
2114 // and nudge the UI into displaying itself correctly in case
2115 // we've turned the wxUpdateUIEvents frequency down low.
2116 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
2117 {
2118     TransferDataToWindow();
2119
2120     // Update the UI at this point
2121     UpdateWindowUI(wxUPDATE_UI_RECURSE);
2122 }
2123
2124 // process Ctrl-Alt-mclick
2125 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
2126 {
2127 #if wxUSE_MSGDLG
2128     if ( event.ControlDown() && event.AltDown() )
2129     {
2130         // don't translate these strings
2131         wxString port;
2132
2133 #ifdef __WXUNIVERSAL__
2134         port = _T("Univ/");
2135 #endif // __WXUNIVERSAL__
2136
2137         switch ( wxGetOsVersion() )
2138         {
2139             case wxMOTIF_X:     port += _T("Motif"); break;
2140             case wxMAC:
2141             case wxMAC_DARWIN:  port += _T("Mac"); break;
2142             case wxBEOS:        port += _T("BeOS"); break;
2143             case wxGTK:
2144             case wxGTK_WIN32:
2145             case wxGTK_OS2:
2146             case wxGTK_BEOS:    port += _T("GTK"); break;
2147             case wxWINDOWS:
2148             case wxPENWINDOWS:
2149             case wxWINDOWS_NT:
2150             case wxWIN32S:
2151             case wxWIN95:
2152             case wxWIN386:      port += _T("MS Windows"); break;
2153             case wxMGL_UNIX:
2154             case wxMGL_X:
2155             case wxMGL_WIN32:
2156             case wxMGL_OS2:     port += _T("MGL"); break;
2157             case wxWINDOWS_OS2:
2158             case wxOS2_PM:      port += _T("OS/2"); break;
2159             default:            port += _T("unknown"); break;
2160         }
2161
2162         wxMessageBox(wxString::Format(
2163                                       _T(
2164                                         "       wxWidgets Library (%s port)\nVersion %u.%u.%u%s, compiled at %s %s\n   Copyright (c) 1995-2002 wxWidgets team"
2165                                         ),
2166                                       port.c_str(),
2167                                       wxMAJOR_VERSION,
2168                                       wxMINOR_VERSION,
2169                                       wxRELEASE_NUMBER,
2170 #if wxUSE_UNICODE
2171                                       L" (Unicode)",
2172 #else
2173                                       "",
2174 #endif
2175                                       __TDATE__,
2176                                       __TTIME__
2177                                      ),
2178                      _T("wxWidgets information"),
2179                      wxICON_INFORMATION | wxOK,
2180                      (wxWindow *)this);
2181     }
2182     else
2183 #endif // wxUSE_MSGDLG
2184     {
2185         event.Skip();
2186     }
2187 }
2188
2189 // ----------------------------------------------------------------------------
2190 // accessibility
2191 // ----------------------------------------------------------------------------
2192
2193 #if wxUSE_ACCESSIBILITY
2194 void wxWindowBase::SetAccessible(wxAccessible* accessible)
2195 {
2196     if (m_accessible && (accessible != m_accessible))
2197         delete m_accessible;
2198     m_accessible = accessible;
2199     if (m_accessible)
2200         m_accessible->SetWindow((wxWindow*) this);
2201 }
2202
2203 // Returns the accessible object, creating if necessary.
2204 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2205 {
2206     if (!m_accessible)
2207         m_accessible = CreateAccessible();
2208     return m_accessible;
2209 }
2210
2211 // Override to create a specific accessible object.
2212 wxAccessible* wxWindowBase::CreateAccessible()
2213 {
2214     return new wxWindowAccessible((wxWindow*) this);
2215 }
2216
2217 #endif
2218
2219 #if !wxUSE_STL
2220 // ----------------------------------------------------------------------------
2221 // list classes implementation
2222 // ----------------------------------------------------------------------------
2223
2224 void wxWindowListNode::DeleteData()
2225 {
2226     delete (wxWindow *)GetData();
2227 }
2228 #endif
2229
2230 // ----------------------------------------------------------------------------
2231 // borders
2232 // ----------------------------------------------------------------------------
2233
2234 wxBorder wxWindowBase::GetBorder(long flags) const
2235 {
2236     wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2237     if ( border == wxBORDER_DEFAULT )
2238     {
2239         border = GetDefaultBorder();
2240     }
2241
2242     return border;
2243 }
2244
2245 wxBorder wxWindowBase::GetDefaultBorder() const
2246 {
2247     return wxBORDER_NONE;
2248 }
2249
2250 // ----------------------------------------------------------------------------
2251 // hit testing
2252 // ----------------------------------------------------------------------------
2253
2254 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2255 {
2256     // here we just check if the point is inside the window or not
2257
2258     // check the top and left border first
2259     bool outside = x < 0 || y < 0;
2260     if ( !outside )
2261     {
2262         // check the right and bottom borders too
2263         wxSize size = GetSize();
2264         outside = x >= size.x || y >= size.y;
2265     }
2266
2267     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2268 }
2269
2270 // ----------------------------------------------------------------------------
2271 // mouse capture
2272 // ----------------------------------------------------------------------------
2273
2274 struct WXDLLEXPORT wxWindowNext
2275 {
2276     wxWindow *win;
2277     wxWindowNext *next;
2278 } *wxWindowBase::ms_winCaptureNext = NULL;
2279
2280 void wxWindowBase::CaptureMouse()
2281 {
2282     wxLogTrace(_T("mousecapture"), _T("CaptureMouse(%p)"), this);
2283
2284     wxWindow *winOld = GetCapture();
2285     if ( winOld )
2286     {
2287         ((wxWindowBase*) winOld)->DoReleaseMouse();
2288
2289         // save it on stack
2290         wxWindowNext *item = new wxWindowNext;
2291         item->win = winOld;
2292         item->next = ms_winCaptureNext;
2293         ms_winCaptureNext = item;
2294     }
2295     //else: no mouse capture to save
2296
2297     DoCaptureMouse();
2298 }
2299
2300 void wxWindowBase::ReleaseMouse()
2301 {
2302     wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(%p)"), this);
2303
2304     wxASSERT_MSG( GetCapture() == this, wxT("attempt to release mouse, but this window hasn't captured it") );
2305
2306     DoReleaseMouse();
2307
2308     if ( ms_winCaptureNext )
2309     {
2310         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2311
2312         wxWindowNext *item = ms_winCaptureNext;
2313         ms_winCaptureNext = item->next;
2314         delete item;
2315     }
2316     //else: stack is empty, no previous capture
2317
2318     wxLogTrace(_T("mousecapture"),
2319         (const wxChar *) _T("After ReleaseMouse() mouse is captured by %p"),
2320         GetCapture());
2321 }
2322
2323 #if wxUSE_HOTKEY
2324
2325 bool
2326 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2327                              int WXUNUSED(modifiers),
2328                              int WXUNUSED(keycode))
2329 {
2330     // not implemented
2331     return false;
2332 }
2333
2334 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2335 {
2336     // not implemented
2337     return false;
2338 }
2339
2340 #endif // wxUSE_HOTKEY
2341
2342 void wxWindowBase::SendDestroyEvent()
2343 {
2344     wxWindowDestroyEvent event;
2345     event.SetEventObject(this);
2346     event.SetId(GetId());
2347     GetEventHandler()->ProcessEvent(event);
2348 }
2349
2350 // ----------------------------------------------------------------------------
2351 // event processing
2352 // ----------------------------------------------------------------------------
2353
2354 bool wxWindowBase::TryValidator(wxEvent& wxVALIDATOR_PARAM(event))
2355 {
2356 #if wxUSE_VALIDATORS
2357     // Can only use the validator of the window which
2358     // is receiving the event
2359     if ( event.GetEventObject() == this )
2360     {
2361         wxValidator *validator = GetValidator();
2362         if ( validator && validator->ProcessEvent(event) )
2363         {
2364             return true;
2365         }
2366     }
2367 #endif // wxUSE_VALIDATORS
2368
2369     return false;
2370 }
2371
2372 bool wxWindowBase::TryParent(wxEvent& event)
2373 {
2374     // carry on up the parent-child hierarchy if the propgation count hasn't
2375     // reached zero yet
2376     if ( event.ShouldPropagate() )
2377     {
2378         // honour the requests to stop propagation at this window: this is
2379         // used by the dialogs, for example, to prevent processing the events
2380         // from the dialog controls in the parent frame which rarely, if ever,
2381         // makes sense
2382         if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
2383         {
2384             wxWindow *parent = GetParent();
2385             if ( parent && !parent->IsBeingDeleted() )
2386             {
2387                 wxPropagateOnce propagateOnce(event);
2388
2389                 return parent->GetEventHandler()->ProcessEvent(event);
2390             }
2391         }
2392     }
2393
2394     return wxEvtHandler::TryParent(event);
2395 }
2396
2397 // ----------------------------------------------------------------------------
2398 // navigation
2399 // ----------------------------------------------------------------------------
2400
2401 // Navigates in the specified direction.
2402 bool wxWindowBase::Navigate(int flags)
2403 {
2404     wxNavigationKeyEvent eventNav;
2405     eventNav.SetFlags(flags);
2406     eventNav.SetEventObject(this);
2407     if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
2408     {
2409         return true;
2410     }
2411     return false;
2412 }
2413
2414 // ----------------------------------------------------------------------------
2415 // global functions
2416 // ----------------------------------------------------------------------------
2417
2418 wxWindow* wxGetTopLevelParent(wxWindow *win)
2419 {
2420     while ( win && !win->IsTopLevel() )
2421          win = win->GetParent();
2422
2423     return win;
2424 }
2425
2426 #if wxUSE_ACCESSIBILITY
2427 // ----------------------------------------------------------------------------
2428 // accessible object for windows
2429 // ----------------------------------------------------------------------------
2430
2431 // Can return either a child object, or an integer
2432 // representing the child element, starting from 1.
2433 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
2434 {
2435     wxASSERT( GetWindow() != NULL );
2436     if (!GetWindow())
2437         return wxACC_FAIL;
2438
2439     return wxACC_NOT_IMPLEMENTED;
2440 }
2441
2442 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
2443 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
2444 {
2445     wxASSERT( GetWindow() != NULL );
2446     if (!GetWindow())
2447         return wxACC_FAIL;
2448
2449     wxWindow* win = NULL;
2450     if (elementId == 0)
2451     {
2452         win = GetWindow();
2453     }
2454     else
2455     {
2456         if (elementId <= (int) GetWindow()->GetChildren().GetCount())
2457         {
2458             win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
2459         }
2460         else
2461             return wxACC_FAIL;
2462     }
2463     if (win)
2464     {
2465         rect = win->GetRect();
2466         if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
2467             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
2468         return wxACC_OK;
2469     }
2470
2471     return wxACC_NOT_IMPLEMENTED;
2472 }
2473
2474 // Navigates from fromId to toId/toObject.
2475 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
2476                              int* WXUNUSED(toId), wxAccessible** toObject)
2477 {
2478     wxASSERT( GetWindow() != NULL );
2479     if (!GetWindow())
2480         return wxACC_FAIL;
2481
2482     switch (navDir)
2483     {
2484     case wxNAVDIR_FIRSTCHILD:
2485         {
2486             if (GetWindow()->GetChildren().GetCount() == 0)
2487                 return wxACC_FALSE;
2488             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
2489             *toObject = childWindow->GetOrCreateAccessible();
2490
2491             return wxACC_OK;
2492         }
2493     case wxNAVDIR_LASTCHILD:
2494         {
2495             if (GetWindow()->GetChildren().GetCount() == 0)
2496                 return wxACC_FALSE;
2497             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
2498             *toObject = childWindow->GetOrCreateAccessible();
2499
2500             return wxACC_OK;
2501         }
2502     case wxNAVDIR_RIGHT:
2503     case wxNAVDIR_DOWN:
2504     case wxNAVDIR_NEXT:
2505         {
2506             wxWindowList::compatibility_iterator node =
2507                 wxWindowList::compatibility_iterator();
2508             if (fromId == 0)
2509             {
2510                 // Can't navigate to sibling of this window
2511                 // if we're a top-level window.
2512                 if (!GetWindow()->GetParent())
2513                     return wxACC_NOT_IMPLEMENTED;
2514
2515                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2516             }
2517             else
2518             {
2519                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2520                     node = GetWindow()->GetChildren().Item(fromId-1);
2521             }
2522
2523             if (node && node->GetNext())
2524             {
2525                 wxWindow* nextWindow = node->GetNext()->GetData();
2526                 *toObject = nextWindow->GetOrCreateAccessible();
2527                 return wxACC_OK;
2528             }
2529             else
2530                 return wxACC_FALSE;
2531         }
2532     case wxNAVDIR_LEFT:
2533     case wxNAVDIR_UP:
2534     case wxNAVDIR_PREVIOUS:
2535         {
2536             wxWindowList::compatibility_iterator node =
2537                 wxWindowList::compatibility_iterator();
2538             if (fromId == 0)
2539             {
2540                 // Can't navigate to sibling of this window
2541                 // if we're a top-level window.
2542                 if (!GetWindow()->GetParent())
2543                     return wxACC_NOT_IMPLEMENTED;
2544
2545                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2546             }
2547             else
2548             {
2549                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2550                     node = GetWindow()->GetChildren().Item(fromId-1);
2551             }
2552
2553             if (node && node->GetPrevious())
2554             {
2555                 wxWindow* previousWindow = node->GetPrevious()->GetData();
2556                 *toObject = previousWindow->GetOrCreateAccessible();
2557                 return wxACC_OK;
2558             }
2559             else
2560                 return wxACC_FALSE;
2561         }
2562     }
2563
2564     return wxACC_NOT_IMPLEMENTED;
2565 }
2566
2567 // Gets the name of the specified object.
2568 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
2569 {
2570     wxASSERT( GetWindow() != NULL );
2571     if (!GetWindow())
2572         return wxACC_FAIL;
2573
2574     wxString title;
2575
2576     // If a child, leave wxWidgets to call the function on the actual
2577     // child object.
2578     if (childId > 0)
2579         return wxACC_NOT_IMPLEMENTED;
2580
2581     // This will eventually be replaced by specialised
2582     // accessible classes, one for each kind of wxWidgets
2583     // control or window.
2584 #if wxUSE_BUTTON
2585     if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
2586         title = ((wxButton*) GetWindow())->GetLabel();
2587     else
2588 #endif
2589         title = GetWindow()->GetName();
2590
2591     if (!title.IsEmpty())
2592     {
2593         *name = title;
2594         return wxACC_OK;
2595     }
2596     else
2597         return wxACC_NOT_IMPLEMENTED;
2598 }
2599
2600 // Gets the number of children.
2601 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
2602 {
2603     wxASSERT( GetWindow() != NULL );
2604     if (!GetWindow())
2605         return wxACC_FAIL;
2606
2607     *childId = (int) GetWindow()->GetChildren().GetCount();
2608     return wxACC_OK;
2609 }
2610
2611 // Gets the specified child (starting from 1).
2612 // If *child is NULL and return value is wxACC_OK,
2613 // this means that the child is a simple element and
2614 // not an accessible object.
2615 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
2616 {
2617     wxASSERT( GetWindow() != NULL );
2618     if (!GetWindow())
2619         return wxACC_FAIL;
2620
2621     if (childId == 0)
2622     {
2623         *child = this;
2624         return wxACC_OK;
2625     }
2626
2627     if (childId > (int) GetWindow()->GetChildren().GetCount())
2628         return wxACC_FAIL;
2629
2630     wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
2631     *child = childWindow->GetOrCreateAccessible();
2632     if (*child)
2633         return wxACC_OK;
2634     else
2635         return wxACC_FAIL;
2636 }
2637
2638 // Gets the parent, or NULL.
2639 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
2640 {
2641     wxASSERT( GetWindow() != NULL );
2642     if (!GetWindow())
2643         return wxACC_FAIL;
2644
2645     wxWindow* parentWindow = GetWindow()->GetParent();
2646     if (!parentWindow)
2647     {
2648         *parent = NULL;
2649         return wxACC_OK;
2650     }
2651     else
2652     {
2653         *parent = parentWindow->GetOrCreateAccessible();
2654         if (*parent)
2655             return wxACC_OK;
2656         else
2657             return wxACC_FAIL;
2658     }
2659 }
2660
2661 // Performs the default action. childId is 0 (the action for this object)
2662 // or > 0 (the action for a child).
2663 // Return wxACC_NOT_SUPPORTED if there is no default action for this
2664 // window (e.g. an edit control).
2665 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
2666 {
2667     wxASSERT( GetWindow() != NULL );
2668     if (!GetWindow())
2669         return wxACC_FAIL;
2670
2671     return wxACC_NOT_IMPLEMENTED;
2672 }
2673
2674 // Gets the default action for this object (0) or > 0 (the action for a child).
2675 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
2676 // string if there is no action.
2677 // The retrieved string describes the action that is performed on an object,
2678 // not what the object does as a result. For example, a toolbar button that prints
2679 // a document has a default action of "Press" rather than "Prints the current document."
2680 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
2681 {
2682     wxASSERT( GetWindow() != NULL );
2683     if (!GetWindow())
2684         return wxACC_FAIL;
2685
2686     return wxACC_NOT_IMPLEMENTED;
2687 }
2688
2689 // Returns the description for this object or a child.
2690 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
2691 {
2692     wxASSERT( GetWindow() != NULL );
2693     if (!GetWindow())
2694         return wxACC_FAIL;
2695
2696     wxString ht(GetWindow()->GetHelpText());
2697     if (!ht.IsEmpty())
2698     {
2699         *description = ht;
2700         return wxACC_OK;
2701     }
2702     return wxACC_NOT_IMPLEMENTED;
2703 }
2704
2705 // Returns help text for this object or a child, similar to tooltip text.
2706 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
2707 {
2708     wxASSERT( GetWindow() != NULL );
2709     if (!GetWindow())
2710         return wxACC_FAIL;
2711
2712     wxString ht(GetWindow()->GetHelpText());
2713     if (!ht.IsEmpty())
2714     {
2715         *helpText = ht;
2716         return wxACC_OK;
2717     }
2718     return wxACC_NOT_IMPLEMENTED;
2719 }
2720
2721 // Returns the keyboard shortcut for this object or child.
2722 // Return e.g. ALT+K
2723 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
2724 {
2725     wxASSERT( GetWindow() != NULL );
2726     if (!GetWindow())
2727         return wxACC_FAIL;
2728
2729     return wxACC_NOT_IMPLEMENTED;
2730 }
2731
2732 // Returns a role constant.
2733 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
2734 {
2735     wxASSERT( GetWindow() != NULL );
2736     if (!GetWindow())
2737         return wxACC_FAIL;
2738
2739     // If a child, leave wxWidgets to call the function on the actual
2740     // child object.
2741     if (childId > 0)
2742         return wxACC_NOT_IMPLEMENTED;
2743
2744     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2745         return wxACC_NOT_IMPLEMENTED;
2746 #if wxUSE_STATUSBAR
2747     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2748         return wxACC_NOT_IMPLEMENTED;
2749 #endif
2750 #if wxUSE_TOOLBAR
2751     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2752         return wxACC_NOT_IMPLEMENTED;
2753 #endif
2754
2755     //*role = wxROLE_SYSTEM_CLIENT;
2756     *role = wxROLE_SYSTEM_CLIENT;
2757     return wxACC_OK;
2758
2759     #if 0
2760     return wxACC_NOT_IMPLEMENTED;
2761     #endif
2762 }
2763
2764 // Returns a state constant.
2765 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
2766 {
2767     wxASSERT( GetWindow() != NULL );
2768     if (!GetWindow())
2769         return wxACC_FAIL;
2770
2771     // If a child, leave wxWidgets to call the function on the actual
2772     // child object.
2773     if (childId > 0)
2774         return wxACC_NOT_IMPLEMENTED;
2775
2776     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2777         return wxACC_NOT_IMPLEMENTED;
2778
2779 #if wxUSE_STATUSBAR
2780     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2781         return wxACC_NOT_IMPLEMENTED;
2782 #endif
2783 #if wxUSE_TOOLBAR
2784     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2785         return wxACC_NOT_IMPLEMENTED;
2786 #endif
2787
2788     *state = 0;
2789     return wxACC_OK;
2790
2791     #if 0
2792     return wxACC_NOT_IMPLEMENTED;
2793     #endif
2794 }
2795
2796 // Returns a localized string representing the value for the object
2797 // or child.
2798 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
2799 {
2800     wxASSERT( GetWindow() != NULL );
2801     if (!GetWindow())
2802         return wxACC_FAIL;
2803
2804     return wxACC_NOT_IMPLEMENTED;
2805 }
2806
2807 // Selects the object or child.
2808 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
2809 {
2810     wxASSERT( GetWindow() != NULL );
2811     if (!GetWindow())
2812         return wxACC_FAIL;
2813
2814     return wxACC_NOT_IMPLEMENTED;
2815 }
2816
2817 // Gets the window with the keyboard focus.
2818 // If childId is 0 and child is NULL, no object in
2819 // this subhierarchy has the focus.
2820 // If this object has the focus, child should be 'this'.
2821 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
2822 {
2823     wxASSERT( GetWindow() != NULL );
2824     if (!GetWindow())
2825         return wxACC_FAIL;
2826
2827     return wxACC_NOT_IMPLEMENTED;
2828 }
2829
2830 // Gets a variant representing the selected children
2831 // of this object.
2832 // Acceptable values:
2833 // - a null variant (IsNull() returns TRUE)
2834 // - a list variant (GetType() == wxT("list")
2835 // - an integer representing the selected child element,
2836 //   or 0 if this object is selected (GetType() == wxT("long")
2837 // - a "void*" pointer to a wxAccessible child object
2838 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
2839 {
2840     wxASSERT( GetWindow() != NULL );
2841     if (!GetWindow())
2842         return wxACC_FAIL;
2843
2844     return wxACC_NOT_IMPLEMENTED;
2845 }
2846
2847 #endif // wxUSE_ACCESSIBILITY