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.Ok() || (colour == m_backgroundColour) )
1011         return false;
1012
1013     m_backgroundColour = colour;
1014
1015     m_hasBgCol = true;
1016
1017     return true;
1018 }
1019
1020 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
1021 {
1022     if ( !colour.Ok() || (colour == m_foregroundColour) )
1023         return false;
1024
1025     m_foregroundColour = colour;
1026
1027     m_hasFgCol = true;
1028
1029     return true;
1030 }
1031
1032 bool wxWindowBase::SetCursor(const wxCursor& cursor)
1033 {
1034     // setting an invalid cursor is ok, it means that we don't have any special
1035     // cursor
1036     if ( m_cursor == cursor )
1037     {
1038         // no change
1039         return false;
1040     }
1041
1042     m_cursor = cursor;
1043
1044     return true;
1045 }
1046
1047 wxFont& wxWindowBase::DoGetFont() const
1048 {
1049     // logic is the same as in GetBackgroundColour()
1050     if ( !m_font.Ok() )
1051     {
1052         wxASSERT_MSG( !m_hasFont, _T("we have invalid explicit font?") );
1053
1054         wxFont font = GetDefaultAttributes().font;
1055         if ( !font.Ok() )
1056             font = GetClassDefaultAttributes().font;
1057
1058         wxConstCast(this, wxWindowBase)->m_font = font;
1059     }
1060
1061     // cast is here for non-const GetFont() convenience
1062     return wxConstCast(this, wxWindowBase)->m_font;
1063 }
1064
1065 bool wxWindowBase::SetFont(const wxFont& font)
1066 {
1067     if ( !font.Ok() )
1068         return false;
1069
1070     if ( font == m_font )
1071     {
1072         // no change
1073         return false;
1074     }
1075
1076     m_font = font;
1077
1078     m_hasFont = true;
1079
1080     return true;
1081 }
1082
1083 #if wxUSE_PALETTE
1084
1085 void wxWindowBase::SetPalette(const wxPalette& pal)
1086 {
1087     m_hasCustomPalette = true;
1088     m_palette = pal;
1089
1090     // VZ: can anyone explain me what do we do here?
1091     wxWindowDC d((wxWindow *) this);
1092     d.SetPalette(pal);
1093 }
1094
1095 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
1096 {
1097     wxWindow *win = (wxWindow *)this;
1098     while ( win && !win->HasCustomPalette() )
1099     {
1100         win = win->GetParent();
1101     }
1102
1103     return win;
1104 }
1105
1106 #endif // wxUSE_PALETTE
1107
1108 #if wxUSE_CARET
1109 void wxWindowBase::SetCaret(wxCaret *caret)
1110 {
1111     if ( m_caret )
1112     {
1113         delete m_caret;
1114     }
1115
1116     m_caret = caret;
1117
1118     if ( m_caret )
1119     {
1120         wxASSERT_MSG( m_caret->GetWindow() == this,
1121                       wxT("caret should be created associated to this window") );
1122     }
1123 }
1124 #endif // wxUSE_CARET
1125
1126 #if wxUSE_VALIDATORS
1127 // ----------------------------------------------------------------------------
1128 // validators
1129 // ----------------------------------------------------------------------------
1130
1131 void wxWindowBase::SetValidator(const wxValidator& validator)
1132 {
1133     if ( m_windowValidator )
1134         delete m_windowValidator;
1135
1136     m_windowValidator = (wxValidator *)validator.Clone();
1137
1138     if ( m_windowValidator )
1139         m_windowValidator->SetWindow(this);
1140 }
1141 #endif // wxUSE_VALIDATORS
1142
1143 // ----------------------------------------------------------------------------
1144 // update region stuff
1145 // ----------------------------------------------------------------------------
1146
1147 wxRect wxWindowBase::GetUpdateClientRect() const
1148 {
1149     wxRegion rgnUpdate = GetUpdateRegion();
1150     rgnUpdate.Intersect(GetClientRect());
1151     wxRect rectUpdate = rgnUpdate.GetBox();
1152     wxPoint ptOrigin = GetClientAreaOrigin();
1153     rectUpdate.x -= ptOrigin.x;
1154     rectUpdate.y -= ptOrigin.y;
1155
1156     return rectUpdate;
1157 }
1158
1159 bool wxWindowBase::IsExposed(int x, int y) const
1160 {
1161     return m_updateRegion.Contains(x, y) != wxOutRegion;
1162 }
1163
1164 bool wxWindowBase::IsExposed(int x, int y, int w, int h) const
1165 {
1166     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
1167 }
1168
1169 void wxWindowBase::ClearBackground()
1170 {
1171     // wxGTK uses its own version, no need to add never used code
1172 #ifndef __WXGTK__
1173     wxClientDC dc((wxWindow *)this);
1174     wxBrush brush(GetBackgroundColour(), wxSOLID);
1175     dc.SetBackground(brush);
1176     dc.Clear();
1177 #endif // __WXGTK__
1178 }
1179
1180 // ----------------------------------------------------------------------------
1181 // find child window by id or name
1182 // ----------------------------------------------------------------------------
1183
1184 wxWindow *wxWindowBase::FindWindow( long id )
1185 {
1186     if ( id == m_windowId )
1187         return (wxWindow *)this;
1188
1189     wxWindowBase *res = (wxWindow *)NULL;
1190     wxWindowList::compatibility_iterator node;
1191     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1192     {
1193         wxWindowBase *child = node->GetData();
1194         res = child->FindWindow( id );
1195     }
1196
1197     return (wxWindow *)res;
1198 }
1199
1200 wxWindow *wxWindowBase::FindWindow( const wxString& name )
1201 {
1202     if ( name == m_windowName )
1203         return (wxWindow *)this;
1204
1205     wxWindowBase *res = (wxWindow *)NULL;
1206     wxWindowList::compatibility_iterator node;
1207     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1208     {
1209         wxWindow *child = node->GetData();
1210         res = child->FindWindow(name);
1211     }
1212
1213     return (wxWindow *)res;
1214 }
1215
1216
1217 // find any window by id or name or label: If parent is non-NULL, look through
1218 // children for a label or title matching the specified string. If NULL, look
1219 // through all top-level windows.
1220 //
1221 // to avoid duplicating code we reuse the same helper function but with
1222 // different comparators
1223
1224 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1225                                 const wxString& label, long id);
1226
1227 static
1228 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1229                            long WXUNUSED(id))
1230 {
1231     return win->GetLabel() == label;
1232 }
1233
1234 static
1235 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1236                           long WXUNUSED(id))
1237 {
1238     return win->GetName() == label;
1239 }
1240
1241 static
1242 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1243                         long id)
1244 {
1245     return win->GetId() == id;
1246 }
1247
1248 // recursive helper for the FindWindowByXXX() functions
1249 static
1250 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1251                                   const wxString& label,
1252                                   long id,
1253                                   wxFindWindowCmp cmp)
1254 {
1255     if ( parent )
1256     {
1257         // see if this is the one we're looking for
1258         if ( (*cmp)(parent, label, id) )
1259             return (wxWindow *)parent;
1260
1261         // It wasn't, so check all its children
1262         for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
1263               node;
1264               node = node->GetNext() )
1265         {
1266             // recursively check each child
1267             wxWindow *win = (wxWindow *)node->GetData();
1268             wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1269             if (retwin)
1270                 return retwin;
1271         }
1272     }
1273
1274     // Not found
1275     return NULL;
1276 }
1277
1278 // helper for FindWindowByXXX()
1279 static
1280 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1281                              const wxString& label,
1282                              long id,
1283                              wxFindWindowCmp cmp)
1284 {
1285     if ( parent )
1286     {
1287         // just check parent and all its children
1288         return wxFindWindowRecursively(parent, label, id, cmp);
1289     }
1290
1291     // start at very top of wx's windows
1292     for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1293           node;
1294           node = node->GetNext() )
1295     {
1296         // recursively check each window & its children
1297         wxWindow *win = node->GetData();
1298         wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1299         if (retwin)
1300             return retwin;
1301     }
1302
1303     return NULL;
1304 }
1305
1306 /* static */
1307 wxWindow *
1308 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1309 {
1310     return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1311 }
1312
1313 /* static */
1314 wxWindow *
1315 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1316 {
1317     wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1318
1319     if ( !win )
1320     {
1321         // fall back to the label
1322         win = FindWindowByLabel(title, parent);
1323     }
1324
1325     return win;
1326 }
1327
1328 /* static */
1329 wxWindow *
1330 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1331 {
1332     return wxFindWindowHelper(parent, _T(""), id, wxFindWindowCmpIds);
1333 }
1334
1335 // ----------------------------------------------------------------------------
1336 // dialog oriented functions
1337 // ----------------------------------------------------------------------------
1338
1339 void wxWindowBase::MakeModal(bool modal)
1340 {
1341     // Disable all other windows
1342     if ( IsTopLevel() )
1343     {
1344         wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1345         while (node)
1346         {
1347             wxWindow *win = node->GetData();
1348             if (win != this)
1349                 win->Enable(!modal);
1350
1351             node = node->GetNext();
1352         }
1353     }
1354 }
1355
1356 bool wxWindowBase::Validate()
1357 {
1358 #if wxUSE_VALIDATORS
1359     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1360
1361     wxWindowList::compatibility_iterator node;
1362     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1363     {
1364         wxWindowBase *child = node->GetData();
1365         wxValidator *validator = child->GetValidator();
1366         if ( validator && !validator->Validate((wxWindow *)this) )
1367         {
1368             return false;
1369         }
1370
1371         if ( recurse && !child->Validate() )
1372         {
1373             return false;
1374         }
1375     }
1376 #endif // wxUSE_VALIDATORS
1377
1378     return true;
1379 }
1380
1381 bool wxWindowBase::TransferDataToWindow()
1382 {
1383 #if wxUSE_VALIDATORS
1384     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1385
1386     wxWindowList::compatibility_iterator node;
1387     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1388     {
1389         wxWindowBase *child = node->GetData();
1390         wxValidator *validator = child->GetValidator();
1391         if ( validator && !validator->TransferToWindow() )
1392         {
1393             wxLogWarning(_("Could not transfer data to window"));
1394 #if wxUSE_LOG
1395             wxLog::FlushActive();
1396 #endif // wxUSE_LOG
1397
1398             return false;
1399         }
1400
1401         if ( recurse )
1402         {
1403             if ( !child->TransferDataToWindow() )
1404             {
1405                 // warning already given
1406                 return false;
1407             }
1408         }
1409     }
1410 #endif // wxUSE_VALIDATORS
1411
1412     return true;
1413 }
1414
1415 bool wxWindowBase::TransferDataFromWindow()
1416 {
1417 #if wxUSE_VALIDATORS
1418     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1419
1420     wxWindowList::compatibility_iterator node;
1421     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1422     {
1423         wxWindow *child = node->GetData();
1424         wxValidator *validator = child->GetValidator();
1425         if ( validator && !validator->TransferFromWindow() )
1426         {
1427             // nop warning here because the application is supposed to give
1428             // one itself - we don't know here what might have gone wrongly
1429
1430             return false;
1431         }
1432
1433         if ( recurse )
1434         {
1435             if ( !child->TransferDataFromWindow() )
1436             {
1437                 // warning already given
1438                 return false;
1439             }
1440         }
1441     }
1442 #endif // wxUSE_VALIDATORS
1443
1444     return true;
1445 }
1446
1447 void wxWindowBase::InitDialog()
1448 {
1449     wxInitDialogEvent event(GetId());
1450     event.SetEventObject( this );
1451     GetEventHandler()->ProcessEvent(event);
1452 }
1453
1454 // ----------------------------------------------------------------------------
1455 // context-sensitive help support
1456 // ----------------------------------------------------------------------------
1457
1458 #if wxUSE_HELP
1459
1460 // associate this help text with this window
1461 void wxWindowBase::SetHelpText(const wxString& text)
1462 {
1463     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1464     if ( helpProvider )
1465     {
1466         helpProvider->AddHelp(this, text);
1467     }
1468 }
1469
1470 // associate this help text with all windows with the same id as this
1471 // one
1472 void wxWindowBase::SetHelpTextForId(const wxString& text)
1473 {
1474     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1475     if ( helpProvider )
1476     {
1477         helpProvider->AddHelp(GetId(), text);
1478     }
1479 }
1480
1481 // get the help string associated with this window (may be empty)
1482 wxString wxWindowBase::GetHelpText() const
1483 {
1484     wxString text;
1485     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1486     if ( helpProvider )
1487     {
1488         text = helpProvider->GetHelp(this);
1489     }
1490
1491     return text;
1492 }
1493
1494 // show help for this window
1495 void wxWindowBase::OnHelp(wxHelpEvent& event)
1496 {
1497     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1498     if ( helpProvider )
1499     {
1500         if ( helpProvider->ShowHelp(this) )
1501         {
1502             // skip the event.Skip() below
1503             return;
1504         }
1505     }
1506
1507     event.Skip();
1508 }
1509
1510 #endif // wxUSE_HELP
1511
1512 // ----------------------------------------------------------------------------
1513 // tooltipsroot.Replace("\\", "/");
1514 // ----------------------------------------------------------------------------
1515
1516 #if wxUSE_TOOLTIPS
1517
1518 void wxWindowBase::SetToolTip( const wxString &tip )
1519 {
1520     // don't create the new tooltip if we already have one
1521     if ( m_tooltip )
1522     {
1523         m_tooltip->SetTip( tip );
1524     }
1525     else
1526     {
1527         SetToolTip( new wxToolTip( tip ) );
1528     }
1529
1530     // setting empty tooltip text does not remove the tooltip any more - use
1531     // SetToolTip((wxToolTip *)NULL) for this
1532 }
1533
1534 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1535 {
1536     if ( m_tooltip )
1537         delete m_tooltip;
1538
1539     m_tooltip = tooltip;
1540 }
1541
1542 #endif // wxUSE_TOOLTIPS
1543
1544 // ----------------------------------------------------------------------------
1545 // constraints and sizers
1546 // ----------------------------------------------------------------------------
1547
1548 #if wxUSE_CONSTRAINTS
1549
1550 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1551 {
1552     if ( m_constraints )
1553     {
1554         UnsetConstraints(m_constraints);
1555         delete m_constraints;
1556     }
1557     m_constraints = constraints;
1558     if ( m_constraints )
1559     {
1560         // Make sure other windows know they're part of a 'meaningful relationship'
1561         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1562             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1563         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1564             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1565         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1566             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1567         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1568             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1569         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1570             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1571         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1572             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1573         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1574             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1575         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1576             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1577     }
1578 }
1579
1580 // This removes any dangling pointers to this window in other windows'
1581 // constraintsInvolvedIn lists.
1582 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1583 {
1584     if ( c )
1585     {
1586         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1587             c->left.GetOtherWindow()->RemoveConstraintReference(this);
1588         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1589             c->top.GetOtherWindow()->RemoveConstraintReference(this);
1590         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1591             c->right.GetOtherWindow()->RemoveConstraintReference(this);
1592         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1593             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1594         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1595             c->width.GetOtherWindow()->RemoveConstraintReference(this);
1596         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1597             c->height.GetOtherWindow()->RemoveConstraintReference(this);
1598         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1599             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
1600         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
1601             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
1602     }
1603 }
1604
1605 // Back-pointer to other windows we're involved with, so if we delete this
1606 // window, we must delete any constraints we're involved with.
1607 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
1608 {
1609     if ( !m_constraintsInvolvedIn )
1610         m_constraintsInvolvedIn = new wxWindowList;
1611     if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
1612         m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
1613 }
1614
1615 // REMOVE back-pointer to other windows we're involved with.
1616 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
1617 {
1618     if ( m_constraintsInvolvedIn )
1619         m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
1620 }
1621
1622 // Reset any constraints that mention this window
1623 void wxWindowBase::DeleteRelatedConstraints()
1624 {
1625     if ( m_constraintsInvolvedIn )
1626     {
1627         wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
1628         while (node)
1629         {
1630             wxWindow *win = node->GetData();
1631             wxLayoutConstraints *constr = win->GetConstraints();
1632
1633             // Reset any constraints involving this window
1634             if ( constr )
1635             {
1636                 constr->left.ResetIfWin(this);
1637                 constr->top.ResetIfWin(this);
1638                 constr->right.ResetIfWin(this);
1639                 constr->bottom.ResetIfWin(this);
1640                 constr->width.ResetIfWin(this);
1641                 constr->height.ResetIfWin(this);
1642                 constr->centreX.ResetIfWin(this);
1643                 constr->centreY.ResetIfWin(this);
1644             }
1645
1646             wxWindowList::compatibility_iterator next = node->GetNext();
1647             m_constraintsInvolvedIn->Erase(node);
1648             node = next;
1649         }
1650
1651         delete m_constraintsInvolvedIn;
1652         m_constraintsInvolvedIn = (wxWindowList *) NULL;
1653     }
1654 }
1655
1656 #endif // wxUSE_CONSTRAINTS
1657
1658 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
1659 {
1660     if ( sizer == m_windowSizer)
1661         return;
1662
1663     if ( deleteOld )
1664         delete m_windowSizer;
1665
1666     m_windowSizer = sizer;
1667
1668     SetAutoLayout( sizer != NULL );
1669 }
1670
1671 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
1672 {
1673     SetSizer( sizer, deleteOld );
1674     sizer->SetSizeHints( (wxWindow*) this );
1675 }
1676
1677
1678 void wxWindowBase::SetContainingSizer(wxSizer* sizer)
1679 {
1680     // adding a window to a sizer twice is going to result in fatal and
1681     // hard to debug problems later because when deleting the second
1682     // associated wxSizerItem we're going to dereference a dangling
1683     // pointer; so try to detect this as early as possible
1684     wxASSERT_MSG( !sizer || m_containingSizer != sizer,
1685                   _T("Adding a window to the same sizer twice?") );
1686
1687     m_containingSizer = sizer;
1688 }
1689
1690 #if wxUSE_CONSTRAINTS
1691
1692 void wxWindowBase::SatisfyConstraints()
1693 {
1694     wxLayoutConstraints *constr = GetConstraints();
1695     bool wasOk = constr && constr->AreSatisfied();
1696
1697     ResetConstraints();   // Mark all constraints as unevaluated
1698
1699     int noChanges = 1;
1700
1701     // if we're a top level panel (i.e. our parent is frame/dialog), our
1702     // own constraints will never be satisfied any more unless we do it
1703     // here
1704     if ( wasOk )
1705     {
1706         while ( noChanges > 0 )
1707         {
1708             LayoutPhase1(&noChanges);
1709         }
1710     }
1711
1712     LayoutPhase2(&noChanges);
1713 }
1714
1715 #endif // wxUSE_CONSTRAINTS
1716
1717 bool wxWindowBase::Layout()
1718 {
1719     // If there is a sizer, use it instead of the constraints
1720     if ( GetSizer() )
1721     {
1722         int w, h;
1723         GetVirtualSize(&w, &h);
1724         GetSizer()->SetDimension( 0, 0, w, h );
1725     }
1726 #if wxUSE_CONSTRAINTS
1727     else
1728     {
1729         SatisfyConstraints(); // Find the right constraints values
1730         SetConstraintSizes(); // Recursively set the real window sizes
1731     }
1732 #endif
1733
1734     return true;
1735 }
1736
1737 #if wxUSE_CONSTRAINTS
1738
1739 // first phase of the constraints evaluation: set our own constraints
1740 bool wxWindowBase::LayoutPhase1(int *noChanges)
1741 {
1742     wxLayoutConstraints *constr = GetConstraints();
1743
1744     return !constr || constr->SatisfyConstraints(this, noChanges);
1745 }
1746
1747 // second phase: set the constraints for our children
1748 bool wxWindowBase::LayoutPhase2(int *noChanges)
1749 {
1750     *noChanges = 0;
1751
1752     // Layout children
1753     DoPhase(1);
1754
1755     // Layout grand children
1756     DoPhase(2);
1757
1758     return true;
1759 }
1760
1761 // Do a phase of evaluating child constraints
1762 bool wxWindowBase::DoPhase(int phase)
1763 {
1764     // the list containing the children for which the constraints are already
1765     // set correctly
1766     wxWindowList succeeded;
1767
1768     // the max number of iterations we loop before concluding that we can't set
1769     // the constraints
1770     static const int maxIterations = 500;
1771
1772     for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
1773     {
1774         int noChanges = 0;
1775
1776         // loop over all children setting their constraints
1777         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1778               node;
1779               node = node->GetNext() )
1780         {
1781             wxWindow *child = node->GetData();
1782             if ( child->IsTopLevel() )
1783             {
1784                 // top level children are not inside our client area
1785                 continue;
1786             }
1787
1788             if ( !child->GetConstraints() || succeeded.Find(child) )
1789             {
1790                 // this one is either already ok or nothing we can do about it
1791                 continue;
1792             }
1793
1794             int tempNoChanges = 0;
1795             bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
1796                                       : child->LayoutPhase2(&tempNoChanges);
1797             noChanges += tempNoChanges;
1798
1799             if ( success )
1800             {
1801                 succeeded.Append(child);
1802             }
1803         }
1804
1805         if ( !noChanges )
1806         {
1807             // constraints are set
1808             break;
1809         }
1810     }
1811
1812     return true;
1813 }
1814
1815 void wxWindowBase::ResetConstraints()
1816 {
1817     wxLayoutConstraints *constr = GetConstraints();
1818     if ( constr )
1819     {
1820         constr->left.SetDone(false);
1821         constr->top.SetDone(false);
1822         constr->right.SetDone(false);
1823         constr->bottom.SetDone(false);
1824         constr->width.SetDone(false);
1825         constr->height.SetDone(false);
1826         constr->centreX.SetDone(false);
1827         constr->centreY.SetDone(false);
1828     }
1829
1830     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1831     while (node)
1832     {
1833         wxWindow *win = node->GetData();
1834         if ( !win->IsTopLevel() )
1835             win->ResetConstraints();
1836         node = node->GetNext();
1837     }
1838 }
1839
1840 // Need to distinguish between setting the 'fake' size for windows and sizers,
1841 // and setting the real values.
1842 void wxWindowBase::SetConstraintSizes(bool recurse)
1843 {
1844     wxLayoutConstraints *constr = GetConstraints();
1845     if ( constr && constr->AreSatisfied() )
1846     {
1847         int x = constr->left.GetValue();
1848         int y = constr->top.GetValue();
1849         int w = constr->width.GetValue();
1850         int h = constr->height.GetValue();
1851
1852         if ( (constr->width.GetRelationship() != wxAsIs ) ||
1853              (constr->height.GetRelationship() != wxAsIs) )
1854         {
1855             SetSize(x, y, w, h);
1856         }
1857         else
1858         {
1859             // If we don't want to resize this window, just move it...
1860             Move(x, y);
1861         }
1862     }
1863     else if ( constr )
1864     {
1865         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
1866                    GetClassInfo()->GetClassName(),
1867                    GetName().c_str());
1868     }
1869
1870     if ( recurse )
1871     {
1872         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1873         while (node)
1874         {
1875             wxWindow *win = node->GetData();
1876             if ( !win->IsTopLevel() && win->GetConstraints() )
1877                 win->SetConstraintSizes();
1878             node = node->GetNext();
1879         }
1880     }
1881 }
1882
1883 // Only set the size/position of the constraint (if any)
1884 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
1885 {
1886     wxLayoutConstraints *constr = GetConstraints();
1887     if ( constr )
1888     {
1889         if ( x != wxDefaultPosition.x )
1890         {
1891             constr->left.SetValue(x);
1892             constr->left.SetDone(true);
1893         }
1894         if ( y != wxDefaultPosition.y )
1895         {
1896             constr->top.SetValue(y);
1897             constr->top.SetDone(true);
1898         }
1899         if ( w != wxDefaultSize.x )
1900         {
1901             constr->width.SetValue(w);
1902             constr->width.SetDone(true);
1903         }
1904         if ( h != wxDefaultSize.y )
1905         {
1906             constr->height.SetValue(h);
1907             constr->height.SetDone(true);
1908         }
1909     }
1910 }
1911
1912 void wxWindowBase::MoveConstraint(int x, int y)
1913 {
1914     wxLayoutConstraints *constr = GetConstraints();
1915     if ( constr )
1916     {
1917         if ( x != wxDefaultPosition.x )
1918         {
1919             constr->left.SetValue(x);
1920             constr->left.SetDone(true);
1921         }
1922         if ( y != wxDefaultPosition.y )
1923         {
1924             constr->top.SetValue(y);
1925             constr->top.SetDone(true);
1926         }
1927     }
1928 }
1929
1930 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
1931 {
1932     wxLayoutConstraints *constr = GetConstraints();
1933     if ( constr )
1934     {
1935         *w = constr->width.GetValue();
1936         *h = constr->height.GetValue();
1937     }
1938     else
1939         GetSize(w, h);
1940 }
1941
1942 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
1943 {
1944     wxLayoutConstraints *constr = GetConstraints();
1945     if ( constr )
1946     {
1947         *w = constr->width.GetValue();
1948         *h = constr->height.GetValue();
1949     }
1950     else
1951         GetClientSize(w, h);
1952 }
1953
1954 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
1955 {
1956     wxLayoutConstraints *constr = GetConstraints();
1957     if ( constr )
1958     {
1959         *x = constr->left.GetValue();
1960         *y = constr->top.GetValue();
1961     }
1962     else
1963         GetPosition(x, y);
1964 }
1965
1966 #endif // wxUSE_CONSTRAINTS
1967
1968 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
1969 {
1970     // don't do it for the dialogs/frames - they float independently of their
1971     // parent
1972     if ( !IsTopLevel() )
1973     {
1974         wxWindow *parent = GetParent();
1975         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
1976         {
1977             wxPoint pt(parent->GetClientAreaOrigin());
1978             x += pt.x;
1979             y += pt.y;
1980         }
1981     }
1982 }
1983
1984 // ----------------------------------------------------------------------------
1985 // do Update UI processing for child controls
1986 // ----------------------------------------------------------------------------
1987
1988 void wxWindowBase::UpdateWindowUI(long flags)
1989 {
1990     wxUpdateUIEvent event(GetId());
1991     event.m_eventObject = this;
1992
1993     if ( GetEventHandler()->ProcessEvent(event) )
1994     {
1995         DoUpdateWindowUI(event);
1996     }
1997
1998     if (flags & wxUPDATE_UI_RECURSE)
1999     {
2000         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2001         while (node)
2002         {
2003             wxWindow* child = (wxWindow*) node->GetData();
2004             child->UpdateWindowUI(flags);
2005             node = node->GetNext();
2006         }
2007     }
2008 }
2009
2010 // do the window-specific processing after processing the update event
2011 // TODO: take specific knowledge out of this function and
2012 // put in each control's base class. Unfortunately we don't
2013 // yet have base implementation files for wxCheckBox and wxRadioButton.
2014 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
2015 {
2016     if ( event.GetSetEnabled() )
2017         Enable(event.GetEnabled());
2018
2019 #if wxUSE_CONTROLS
2020     if ( event.GetSetText() )
2021     {
2022         wxControl *control = wxDynamicCastThis(wxControl);
2023         if ( control )
2024         {
2025             if ( event.GetText() != control->GetLabel() )
2026                 control->SetLabel(event.GetText());
2027         }
2028 #if wxUSE_CHECKBOX
2029         wxCheckBox *checkbox = wxDynamicCastThis(wxCheckBox);
2030         if ( checkbox )
2031         {
2032             if ( event.GetSetChecked() )
2033                 checkbox->SetValue(event.GetChecked());
2034         }
2035 #endif // wxUSE_CHECKBOX
2036
2037 #if wxUSE_RADIOBTN
2038         wxRadioButton *radiobtn = wxDynamicCastThis(wxRadioButton);
2039         if ( radiobtn )
2040         {
2041             if ( event.GetSetChecked() )
2042                 radiobtn->SetValue(event.GetChecked());
2043         }
2044 #endif // wxUSE_RADIOBTN
2045     }
2046 #endif
2047 }
2048
2049 #if 0
2050 // call internal idle recursively
2051 // may be obsolete (wait until OnIdle scheme stabilises)
2052 void wxWindowBase::ProcessInternalIdle()
2053 {
2054     OnInternalIdle();
2055
2056     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2057     while (node)
2058     {
2059         wxWindow *child = node->GetData();
2060         child->ProcessInternalIdle();
2061         node = node->GetNext();
2062     }
2063 }
2064 #endif
2065
2066 // ----------------------------------------------------------------------------
2067 // dialog units translations
2068 // ----------------------------------------------------------------------------
2069
2070 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
2071 {
2072     int charWidth = GetCharWidth();
2073     int charHeight = GetCharHeight();
2074     wxPoint pt2(-1, -1);
2075     if (pt.x != -1)
2076         pt2.x = (int) ((pt.x * 4) / charWidth);
2077     if (pt.y != -1)
2078         pt2.y = (int) ((pt.y * 8) / charHeight);
2079
2080     return pt2;
2081 }
2082
2083 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
2084 {
2085     int charWidth = GetCharWidth();
2086     int charHeight = GetCharHeight();
2087     wxPoint pt2(-1, -1);
2088     if (pt.x != -1)
2089         pt2.x = (int) ((pt.x * charWidth) / 4);
2090     if (pt.y != -1)
2091         pt2.y = (int) ((pt.y * charHeight) / 8);
2092
2093     return pt2;
2094 }
2095
2096 // ----------------------------------------------------------------------------
2097 // event handlers
2098 // ----------------------------------------------------------------------------
2099
2100 // propagate the colour change event to the subwindows
2101 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
2102 {
2103     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2104     while ( node )
2105     {
2106         // Only propagate to non-top-level windows
2107         wxWindow *win = node->GetData();
2108         if ( !win->IsTopLevel() )
2109         {
2110             wxSysColourChangedEvent event2;
2111             event.m_eventObject = win;
2112             win->GetEventHandler()->ProcessEvent(event2);
2113         }
2114
2115         node = node->GetNext();
2116     }
2117 }
2118
2119 // the default action is to populate dialog with data when it's created,
2120 // and nudge the UI into displaying itself correctly in case
2121 // we've turned the wxUpdateUIEvents frequency down low.
2122 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
2123 {
2124     TransferDataToWindow();
2125
2126     // Update the UI at this point
2127     UpdateWindowUI(wxUPDATE_UI_RECURSE);
2128 }
2129
2130 // process Ctrl-Alt-mclick
2131 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
2132 {
2133 #if wxUSE_MSGDLG
2134     if ( event.ControlDown() && event.AltDown() )
2135     {
2136         // don't translate these strings
2137         wxString port;
2138
2139 #ifdef __WXUNIVERSAL__
2140         port = _T("Univ/");
2141 #endif // __WXUNIVERSAL__
2142
2143         switch ( wxGetOsVersion() )
2144         {
2145             case wxMOTIF_X:     port += _T("Motif"); break;
2146             case wxMAC:
2147             case wxMAC_DARWIN:  port += _T("Mac"); break;
2148             case wxBEOS:        port += _T("BeOS"); break;
2149             case wxGTK:
2150             case wxGTK_WIN32:
2151             case wxGTK_OS2:
2152             case wxGTK_BEOS:    port += _T("GTK"); break;
2153             case wxWINDOWS:
2154             case wxPENWINDOWS:
2155             case wxWINDOWS_NT:
2156             case wxWIN32S:
2157             case wxWIN95:
2158             case wxWIN386:      port += _T("MS Windows"); break;
2159             case wxMGL_UNIX:
2160             case wxMGL_X:
2161             case wxMGL_WIN32:
2162             case wxMGL_OS2:     port += _T("MGL"); break;
2163             case wxWINDOWS_OS2:
2164             case wxOS2_PM:      port += _T("OS/2"); break;
2165             default:            port += _T("unknown"); break;
2166         }
2167
2168         wxMessageBox(wxString::Format(
2169                                       _T(
2170                                         "       wxWidgets Library (%s port)\nVersion %u.%u.%u%s, compiled at %s %s\n   Copyright (c) 1995-2002 wxWidgets team"
2171                                         ),
2172                                       port.c_str(),
2173                                       wxMAJOR_VERSION,
2174                                       wxMINOR_VERSION,
2175                                       wxRELEASE_NUMBER,
2176 #if wxUSE_UNICODE
2177                                       L" (Unicode)",
2178 #else
2179                                       "",
2180 #endif
2181                                       __TDATE__,
2182                                       __TTIME__
2183                                      ),
2184                      _T("wxWidgets information"),
2185                      wxICON_INFORMATION | wxOK,
2186                      (wxWindow *)this);
2187     }
2188     else
2189 #endif // wxUSE_MSGDLG
2190     {
2191         event.Skip();
2192     }
2193 }
2194
2195 // ----------------------------------------------------------------------------
2196 // accessibility
2197 // ----------------------------------------------------------------------------
2198
2199 #if wxUSE_ACCESSIBILITY
2200 void wxWindowBase::SetAccessible(wxAccessible* accessible)
2201 {
2202     if (m_accessible && (accessible != m_accessible))
2203         delete m_accessible;
2204     m_accessible = accessible;
2205     if (m_accessible)
2206         m_accessible->SetWindow((wxWindow*) this);
2207 }
2208
2209 // Returns the accessible object, creating if necessary.
2210 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2211 {
2212     if (!m_accessible)
2213         m_accessible = CreateAccessible();
2214     return m_accessible;
2215 }
2216
2217 // Override to create a specific accessible object.
2218 wxAccessible* wxWindowBase::CreateAccessible()
2219 {
2220     return new wxWindowAccessible((wxWindow*) this);
2221 }
2222
2223 #endif
2224
2225 #if !wxUSE_STL
2226 // ----------------------------------------------------------------------------
2227 // list classes implementation
2228 // ----------------------------------------------------------------------------
2229
2230 void wxWindowListNode::DeleteData()
2231 {
2232     delete (wxWindow *)GetData();
2233 }
2234 #endif
2235
2236 // ----------------------------------------------------------------------------
2237 // borders
2238 // ----------------------------------------------------------------------------
2239
2240 wxBorder wxWindowBase::GetBorder(long flags) const
2241 {
2242     wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2243     if ( border == wxBORDER_DEFAULT )
2244     {
2245         border = GetDefaultBorder();
2246     }
2247
2248     return border;
2249 }
2250
2251 wxBorder wxWindowBase::GetDefaultBorder() const
2252 {
2253     return wxBORDER_NONE;
2254 }
2255
2256 // ----------------------------------------------------------------------------
2257 // hit testing
2258 // ----------------------------------------------------------------------------
2259
2260 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2261 {
2262     // here we just check if the point is inside the window or not
2263
2264     // check the top and left border first
2265     bool outside = x < 0 || y < 0;
2266     if ( !outside )
2267     {
2268         // check the right and bottom borders too
2269         wxSize size = GetSize();
2270         outside = x >= size.x || y >= size.y;
2271     }
2272
2273     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2274 }
2275
2276 // ----------------------------------------------------------------------------
2277 // mouse capture
2278 // ----------------------------------------------------------------------------
2279
2280 struct WXDLLEXPORT wxWindowNext
2281 {
2282     wxWindow *win;
2283     wxWindowNext *next;
2284 } *wxWindowBase::ms_winCaptureNext = NULL;
2285
2286 void wxWindowBase::CaptureMouse()
2287 {
2288     wxLogTrace(_T("mousecapture"), _T("CaptureMouse(%p)"), this);
2289
2290     wxWindow *winOld = GetCapture();
2291     if ( winOld )
2292     {
2293         ((wxWindowBase*) winOld)->DoReleaseMouse();
2294
2295         // save it on stack
2296         wxWindowNext *item = new wxWindowNext;
2297         item->win = winOld;
2298         item->next = ms_winCaptureNext;
2299         ms_winCaptureNext = item;
2300     }
2301     //else: no mouse capture to save
2302
2303     DoCaptureMouse();
2304 }
2305
2306 void wxWindowBase::ReleaseMouse()
2307 {
2308     wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(%p)"), this);
2309
2310     wxASSERT_MSG( GetCapture() == this, wxT("attempt to release mouse, but this window hasn't captured it") );
2311
2312     DoReleaseMouse();
2313
2314     if ( ms_winCaptureNext )
2315     {
2316         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2317
2318         wxWindowNext *item = ms_winCaptureNext;
2319         ms_winCaptureNext = item->next;
2320         delete item;
2321     }
2322     //else: stack is empty, no previous capture
2323
2324     wxLogTrace(_T("mousecapture"),
2325         (const wxChar *) _T("After ReleaseMouse() mouse is captured by %p"),
2326         GetCapture());
2327 }
2328
2329 #if wxUSE_HOTKEY
2330
2331 bool
2332 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2333                              int WXUNUSED(modifiers),
2334                              int WXUNUSED(keycode))
2335 {
2336     // not implemented
2337     return false;
2338 }
2339
2340 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2341 {
2342     // not implemented
2343     return false;
2344 }
2345
2346 #endif // wxUSE_HOTKEY
2347
2348 void wxWindowBase::SendDestroyEvent()
2349 {
2350     wxWindowDestroyEvent event;
2351     event.SetEventObject(this);
2352     event.SetId(GetId());
2353     GetEventHandler()->ProcessEvent(event);
2354 }
2355
2356 // ----------------------------------------------------------------------------
2357 // event processing
2358 // ----------------------------------------------------------------------------
2359
2360 bool wxWindowBase::TryValidator(wxEvent& wxVALIDATOR_PARAM(event))
2361 {
2362 #if wxUSE_VALIDATORS
2363     // Can only use the validator of the window which
2364     // is receiving the event
2365     if ( event.GetEventObject() == this )
2366     {
2367         wxValidator *validator = GetValidator();
2368         if ( validator && validator->ProcessEvent(event) )
2369         {
2370             return true;
2371         }
2372     }
2373 #endif // wxUSE_VALIDATORS
2374
2375     return false;
2376 }
2377
2378 bool wxWindowBase::TryParent(wxEvent& event)
2379 {
2380     // carry on up the parent-child hierarchy if the propgation count hasn't
2381     // reached zero yet
2382     if ( event.ShouldPropagate() )
2383     {
2384         // honour the requests to stop propagation at this window: this is
2385         // used by the dialogs, for example, to prevent processing the events
2386         // from the dialog controls in the parent frame which rarely, if ever,
2387         // makes sense
2388         if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
2389         {
2390             wxWindow *parent = GetParent();
2391             if ( parent && !parent->IsBeingDeleted() )
2392             {
2393                 wxPropagateOnce propagateOnce(event);
2394
2395                 return parent->GetEventHandler()->ProcessEvent(event);
2396             }
2397         }
2398     }
2399
2400     return wxEvtHandler::TryParent(event);
2401 }
2402
2403 // ----------------------------------------------------------------------------
2404 // global functions
2405 // ----------------------------------------------------------------------------
2406
2407 wxWindow* wxGetTopLevelParent(wxWindow *win)
2408 {
2409     while ( win && !win->IsTopLevel() )
2410          win = win->GetParent();
2411
2412     return win;
2413 }
2414
2415 #if wxUSE_ACCESSIBILITY
2416 // ----------------------------------------------------------------------------
2417 // accessible object for windows
2418 // ----------------------------------------------------------------------------
2419
2420 // Can return either a child object, or an integer
2421 // representing the child element, starting from 1.
2422 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
2423 {
2424     wxASSERT( GetWindow() != NULL );
2425     if (!GetWindow())
2426         return wxACC_FAIL;
2427
2428     return wxACC_NOT_IMPLEMENTED;
2429 }
2430
2431 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
2432 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
2433 {
2434     wxASSERT( GetWindow() != NULL );
2435     if (!GetWindow())
2436         return wxACC_FAIL;
2437
2438     wxWindow* win = NULL;
2439     if (elementId == 0)
2440     {
2441         win = GetWindow();
2442     }
2443     else
2444     {
2445         if (elementId <= (int) GetWindow()->GetChildren().GetCount())
2446         {
2447             win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
2448         }
2449         else
2450             return wxACC_FAIL;
2451     }
2452     if (win)
2453     {
2454         rect = win->GetRect();
2455         if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
2456             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
2457         return wxACC_OK;
2458     }
2459
2460     return wxACC_NOT_IMPLEMENTED;
2461 }
2462
2463 // Navigates from fromId to toId/toObject.
2464 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
2465                              int* WXUNUSED(toId), wxAccessible** toObject)
2466 {
2467     wxASSERT( GetWindow() != NULL );
2468     if (!GetWindow())
2469         return wxACC_FAIL;
2470
2471     switch (navDir)
2472     {
2473     case wxNAVDIR_FIRSTCHILD:
2474         {
2475             if (GetWindow()->GetChildren().GetCount() == 0)
2476                 return wxACC_FALSE;
2477             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
2478             *toObject = childWindow->GetOrCreateAccessible();
2479
2480             return wxACC_OK;
2481         }
2482     case wxNAVDIR_LASTCHILD:
2483         {
2484             if (GetWindow()->GetChildren().GetCount() == 0)
2485                 return wxACC_FALSE;
2486             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
2487             *toObject = childWindow->GetOrCreateAccessible();
2488
2489             return wxACC_OK;
2490         }
2491     case wxNAVDIR_RIGHT:
2492     case wxNAVDIR_DOWN:
2493     case wxNAVDIR_NEXT:
2494         {
2495             wxWindowList::compatibility_iterator node =
2496                 wxWindowList::compatibility_iterator();
2497             if (fromId == 0)
2498             {
2499                 // Can't navigate to sibling of this window
2500                 // if we're a top-level window.
2501                 if (!GetWindow()->GetParent())
2502                     return wxACC_NOT_IMPLEMENTED;
2503
2504                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2505             }
2506             else
2507             {
2508                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2509                     node = GetWindow()->GetChildren().Item(fromId-1);
2510             }
2511
2512             if (node && node->GetNext())
2513             {
2514                 wxWindow* nextWindow = node->GetNext()->GetData();
2515                 *toObject = nextWindow->GetOrCreateAccessible();
2516                 return wxACC_OK;
2517             }
2518             else
2519                 return wxACC_FALSE;
2520         }
2521     case wxNAVDIR_LEFT:
2522     case wxNAVDIR_UP:
2523     case wxNAVDIR_PREVIOUS:
2524         {
2525             wxWindowList::compatibility_iterator node =
2526                 wxWindowList::compatibility_iterator();
2527             if (fromId == 0)
2528             {
2529                 // Can't navigate to sibling of this window
2530                 // if we're a top-level window.
2531                 if (!GetWindow()->GetParent())
2532                     return wxACC_NOT_IMPLEMENTED;
2533
2534                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2535             }
2536             else
2537             {
2538                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2539                     node = GetWindow()->GetChildren().Item(fromId-1);
2540             }
2541
2542             if (node && node->GetPrevious())
2543             {
2544                 wxWindow* previousWindow = node->GetPrevious()->GetData();
2545                 *toObject = previousWindow->GetOrCreateAccessible();
2546                 return wxACC_OK;
2547             }
2548             else
2549                 return wxACC_FALSE;
2550         }
2551     }
2552
2553     return wxACC_NOT_IMPLEMENTED;
2554 }
2555
2556 // Gets the name of the specified object.
2557 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
2558 {
2559     wxASSERT( GetWindow() != NULL );
2560     if (!GetWindow())
2561         return wxACC_FAIL;
2562
2563     wxString title;
2564
2565     // If a child, leave wxWidgets to call the function on the actual
2566     // child object.
2567     if (childId > 0)
2568         return wxACC_NOT_IMPLEMENTED;
2569
2570     // This will eventually be replaced by specialised
2571     // accessible classes, one for each kind of wxWidgets
2572     // control or window.
2573 #if wxUSE_BUTTON
2574     if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
2575         title = ((wxButton*) GetWindow())->GetLabel();
2576     else
2577 #endif
2578         title = GetWindow()->GetName();
2579
2580     if (!title.IsEmpty())
2581     {
2582         *name = title;
2583         return wxACC_OK;
2584     }
2585     else
2586         return wxACC_NOT_IMPLEMENTED;
2587 }
2588
2589 // Gets the number of children.
2590 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
2591 {
2592     wxASSERT( GetWindow() != NULL );
2593     if (!GetWindow())
2594         return wxACC_FAIL;
2595
2596     *childId = (int) GetWindow()->GetChildren().GetCount();
2597     return wxACC_OK;
2598 }
2599
2600 // Gets the specified child (starting from 1).
2601 // If *child is NULL and return value is wxACC_OK,
2602 // this means that the child is a simple element and
2603 // not an accessible object.
2604 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
2605 {
2606     wxASSERT( GetWindow() != NULL );
2607     if (!GetWindow())
2608         return wxACC_FAIL;
2609
2610     if (childId == 0)
2611     {
2612         *child = this;
2613         return wxACC_OK;
2614     }
2615
2616     if (childId > (int) GetWindow()->GetChildren().GetCount())
2617         return wxACC_FAIL;
2618
2619     wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
2620     *child = childWindow->GetOrCreateAccessible();
2621     if (*child)
2622         return wxACC_OK;
2623     else
2624         return wxACC_FAIL;
2625 }
2626
2627 // Gets the parent, or NULL.
2628 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
2629 {
2630     wxASSERT( GetWindow() != NULL );
2631     if (!GetWindow())
2632         return wxACC_FAIL;
2633
2634     wxWindow* parentWindow = GetWindow()->GetParent();
2635     if (!parentWindow)
2636     {
2637         *parent = NULL;
2638         return wxACC_OK;
2639     }
2640     else
2641     {
2642         *parent = parentWindow->GetOrCreateAccessible();
2643         if (*parent)
2644             return wxACC_OK;
2645         else
2646             return wxACC_FAIL;
2647     }
2648 }
2649
2650 // Performs the default action. childId is 0 (the action for this object)
2651 // or > 0 (the action for a child).
2652 // Return wxACC_NOT_SUPPORTED if there is no default action for this
2653 // window (e.g. an edit control).
2654 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
2655 {
2656     wxASSERT( GetWindow() != NULL );
2657     if (!GetWindow())
2658         return wxACC_FAIL;
2659
2660     return wxACC_NOT_IMPLEMENTED;
2661 }
2662
2663 // Gets the default action for this object (0) or > 0 (the action for a child).
2664 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
2665 // string if there is no action.
2666 // The retrieved string describes the action that is performed on an object,
2667 // not what the object does as a result. For example, a toolbar button that prints
2668 // a document has a default action of "Press" rather than "Prints the current document."
2669 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
2670 {
2671     wxASSERT( GetWindow() != NULL );
2672     if (!GetWindow())
2673         return wxACC_FAIL;
2674
2675     return wxACC_NOT_IMPLEMENTED;
2676 }
2677
2678 // Returns the description for this object or a child.
2679 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
2680 {
2681     wxASSERT( GetWindow() != NULL );
2682     if (!GetWindow())
2683         return wxACC_FAIL;
2684
2685     wxString ht(GetWindow()->GetHelpText());
2686     if (!ht.IsEmpty())
2687     {
2688         *description = ht;
2689         return wxACC_OK;
2690     }
2691     return wxACC_NOT_IMPLEMENTED;
2692 }
2693
2694 // Returns help text for this object or a child, similar to tooltip text.
2695 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
2696 {
2697     wxASSERT( GetWindow() != NULL );
2698     if (!GetWindow())
2699         return wxACC_FAIL;
2700
2701     wxString ht(GetWindow()->GetHelpText());
2702     if (!ht.IsEmpty())
2703     {
2704         *helpText = ht;
2705         return wxACC_OK;
2706     }
2707     return wxACC_NOT_IMPLEMENTED;
2708 }
2709
2710 // Returns the keyboard shortcut for this object or child.
2711 // Return e.g. ALT+K
2712 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
2713 {
2714     wxASSERT( GetWindow() != NULL );
2715     if (!GetWindow())
2716         return wxACC_FAIL;
2717
2718     return wxACC_NOT_IMPLEMENTED;
2719 }
2720
2721 // Returns a role constant.
2722 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
2723 {
2724     wxASSERT( GetWindow() != NULL );
2725     if (!GetWindow())
2726         return wxACC_FAIL;
2727
2728     // If a child, leave wxWidgets to call the function on the actual
2729     // child object.
2730     if (childId > 0)
2731         return wxACC_NOT_IMPLEMENTED;
2732
2733     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2734         return wxACC_NOT_IMPLEMENTED;
2735 #if wxUSE_STATUSBAR
2736     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2737         return wxACC_NOT_IMPLEMENTED;
2738 #endif
2739 #if wxUSE_TOOLBAR
2740     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2741         return wxACC_NOT_IMPLEMENTED;
2742 #endif
2743
2744     //*role = wxROLE_SYSTEM_CLIENT;
2745     *role = wxROLE_SYSTEM_CLIENT;
2746     return wxACC_OK;
2747
2748     #if 0
2749     return wxACC_NOT_IMPLEMENTED;
2750     #endif
2751 }
2752
2753 // Returns a state constant.
2754 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
2755 {
2756     wxASSERT( GetWindow() != NULL );
2757     if (!GetWindow())
2758         return wxACC_FAIL;
2759
2760     // If a child, leave wxWidgets to call the function on the actual
2761     // child object.
2762     if (childId > 0)
2763         return wxACC_NOT_IMPLEMENTED;
2764
2765     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2766         return wxACC_NOT_IMPLEMENTED;
2767
2768 #if wxUSE_STATUSBAR
2769     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2770         return wxACC_NOT_IMPLEMENTED;
2771 #endif
2772 #if wxUSE_TOOLBAR
2773     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2774         return wxACC_NOT_IMPLEMENTED;
2775 #endif
2776
2777     *state = 0;
2778     return wxACC_OK;
2779
2780     #if 0
2781     return wxACC_NOT_IMPLEMENTED;
2782     #endif
2783 }
2784
2785 // Returns a localized string representing the value for the object
2786 // or child.
2787 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
2788 {
2789     wxASSERT( GetWindow() != NULL );
2790     if (!GetWindow())
2791         return wxACC_FAIL;
2792
2793     return wxACC_NOT_IMPLEMENTED;
2794 }
2795
2796 // Selects the object or child.
2797 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
2798 {
2799     wxASSERT( GetWindow() != NULL );
2800     if (!GetWindow())
2801         return wxACC_FAIL;
2802
2803     return wxACC_NOT_IMPLEMENTED;
2804 }
2805
2806 // Gets the window with the keyboard focus.
2807 // If childId is 0 and child is NULL, no object in
2808 // this subhierarchy has the focus.
2809 // If this object has the focus, child should be 'this'.
2810 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
2811 {
2812     wxASSERT( GetWindow() != NULL );
2813     if (!GetWindow())
2814         return wxACC_FAIL;
2815
2816     return wxACC_NOT_IMPLEMENTED;
2817 }
2818
2819 // Gets a variant representing the selected children
2820 // of this object.
2821 // Acceptable values:
2822 // - a null variant (IsNull() returns TRUE)
2823 // - a list variant (GetType() == wxT("list")
2824 // - an integer representing the selected child element,
2825 //   or 0 if this object is selected (GetType() == wxT("long")
2826 // - a "void*" pointer to a wxAccessible child object
2827 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
2828 {
2829     wxASSERT( GetWindow() != NULL );
2830     if (!GetWindow())
2831         return wxACC_FAIL;
2832
2833     return wxACC_NOT_IMPLEMENTED;
2834 }
2835
2836 #endif // wxUSE_ACCESSIBILITY