src/common/wincmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        common/window.cpp
   3 // Purpose:     common (to all ports) wxWindow functions
   4 // Author:      Julian Smart, Vadim Zeitlin
   5 // Modified by:
   6 // Created:     13/07/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWidgets team
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "windowbase.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/string.h"
  33     #include "wx/log.h"
  34     #include "wx/intl.h"
  35     #include "wx/frame.h"
  36     #include "wx/defs.h"
  37     #include "wx/window.h"
  38     #include "wx/control.h"
  39     #include "wx/checkbox.h"
  40     #include "wx/radiobut.h"
  41     #include "wx/statbox.h"
  42     #include "wx/textctrl.h"
  43     #include "wx/settings.h"
  44     #include "wx/dialog.h"
  45     #include "wx/msgdlg.h"
  46     #include "wx/statusbr.h"
  47     #include "wx/dcclient.h"
  48 #endif //WX_PRECOMP
  49
  50 #if defined(__WXMAC__) && wxUSE_SCROLLBAR
  51     #include "wx/scrolbar.h"
  52 #endif
  53
  54 #if wxUSE_CONSTRAINTS
  55     #include "wx/layout.h"
  56 #endif // wxUSE_CONSTRAINTS
  57
  58 #include "wx/sizer.h"
  59
  60 #if wxUSE_DRAG_AND_DROP
  61     #include "wx/dnd.h"
  62 #endif // wxUSE_DRAG_AND_DROP
  63
  64 #if wxUSE_ACCESSIBILITY
  65     #include "wx/access.h"
  66 #endif
  67
  68 #if wxUSE_HELP
  69     #include "wx/cshelp.h"
  70 #endif // wxUSE_HELP
  71
  72 #if wxUSE_TOOLTIPS
  73     #include "wx/tooltip.h"
  74 #endif // wxUSE_TOOLTIPS
  75
  76 #if wxUSE_CARET
  77     #include "wx/caret.h"
  78 #endif // wxUSE_CARET
  79
  80 // ----------------------------------------------------------------------------
  81 // static data
  82 // ----------------------------------------------------------------------------
  83
  84 #if defined(__WXPM__)
  85 int wxWindowBase::ms_lastControlId = 2000;
  86 #else
  87 int wxWindowBase::ms_lastControlId = -200;
  88 #endif
  89
  90 IMPLEMENT_ABSTRACT_CLASS(wxWindowBase, wxEvtHandler)
  91
  92 // ----------------------------------------------------------------------------
  93 // event table
  94 // ----------------------------------------------------------------------------
  95
  96 BEGIN_EVENT_TABLE(wxWindowBase, wxEvtHandler)
  97     EVT_SYS_COLOUR_CHANGED(wxWindowBase::OnSysColourChanged)
  98     EVT_INIT_DIALOG(wxWindowBase::OnInitDialog)
  99     EVT_MIDDLE_DOWN(wxWindowBase::OnMiddleClick)
 100
 101 #if wxUSE_HELP
 102     EVT_HELP(wxID_ANY, wxWindowBase::OnHelp)
 103 #endif // wxUSE_HELP
 104
 105 END_EVENT_TABLE()
 106
 107 // ============================================================================
 108 // implementation of the common functionality of the wxWindow class
 109 // ============================================================================
 110
 111 // ----------------------------------------------------------------------------
 112 // initialization
 113 // ----------------------------------------------------------------------------
 114
 115 // the default initialization
 116 wxWindowBase::wxWindowBase()
 117 {
 118     // no window yet, no parent nor children
 119     m_parent = (wxWindow *)NULL;
 120     m_windowId = wxID_ANY;
 121
 122     // no constraints on the minimal window size
 123     m_minWidth =
 124     m_maxWidth = wxDefaultSize.x;
 125     m_minHeight =
 126     m_maxHeight = wxDefaultSize.y;
 127
 128     // window are created enabled and visible by default
 129     m_isShown =
 130     m_isEnabled = true;
 131
 132     // the default event handler is just this window
 133     m_eventHandler = this;
 134
 135 #if wxUSE_VALIDATORS
 136     // no validator
 137     m_windowValidator = (wxValidator *) NULL;
 138 #endif // wxUSE_VALIDATORS
 139
 140     // the colours/fonts are default for now, so leave m_font,
 141     // m_backgroundColour and m_foregroundColour uninitialized and set those
 142     m_hasBgCol =
 143     m_hasFgCol =
 144     m_hasFont = false;
 145
 146     // no style bits
 147     m_exStyle =
 148     m_windowStyle = 0;
 149
 150 #if wxUSE_CONSTRAINTS
 151     // no constraints whatsoever
 152     m_constraints = (wxLayoutConstraints *) NULL;
 153     m_constraintsInvolvedIn = (wxWindowList *) NULL;
 154 #endif // wxUSE_CONSTRAINTS
 155
 156     m_windowSizer = (wxSizer *) NULL;
 157     m_containingSizer = (wxSizer *) NULL;
 158     m_autoLayout = false;
 159
 160 #if wxUSE_DRAG_AND_DROP
 161     m_dropTarget = (wxDropTarget *)NULL;
 162 #endif // wxUSE_DRAG_AND_DROP
 163
 164 #if wxUSE_TOOLTIPS
 165     m_tooltip = (wxToolTip *)NULL;
 166 #endif // wxUSE_TOOLTIPS
 167
 168 #if wxUSE_CARET
 169     m_caret = (wxCaret *)NULL;
 170 #endif // wxUSE_CARET
 171
 172 #if wxUSE_PALETTE
 173     m_hasCustomPalette = false;
 174 #endif // wxUSE_PALETTE
 175
 176 #if wxUSE_ACCESSIBILITY
 177     m_accessible = NULL;
 178 #endif
 179
 180     m_virtualSize = wxDefaultSize;
 181
 182     m_minVirtualWidth =
 183     m_maxVirtualWidth = wxDefaultSize.x;
 184     m_minVirtualHeight =
 185     m_maxVirtualHeight = wxDefaultSize.y;
 186
 187     m_windowVariant = wxWINDOW_VARIANT_NORMAL;
 188
 189     // Whether we're using the current theme for this window (wxGTK only for now)
 190     m_themeEnabled = false;
 191
 192     // VZ: this one shouldn't exist...
 193     m_isBeingDeleted = false;
 194 }
 195
 196 // common part of window creation process
 197 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 198                               wxWindowID id,
 199                               const wxPoint& WXUNUSED(pos),
 200                               const wxSize& WXUNUSED(size),
 201                               long style,
 202                               const wxValidator& wxVALIDATOR_PARAM(validator),
 203                               const wxString& name)
 204 {
 205 #if wxUSE_STATBOX
 206     // wxGTK doesn't allow to create controls with static box as the parent so
 207     // this will result in a crash when the program is ported to wxGTK so warn
 208     // the user about it
 209
 210     // if you get this assert, the correct solution is to create the controls
 211     // as siblings of the static box
 212     wxASSERT_MSG( !parent || !wxDynamicCast(parent, wxStaticBox),
 213                   _T("wxStaticBox can't be used as a window parent!") );
 214 #endif // wxUSE_STATBOX
 215
 216     // ids are limited to 16 bits under MSW so if you care about portability,
 217     // it's not a good idea to use ids out of this range (and negative ids are
 218     // reserved for wxWidgets own usage)
 219     wxASSERT_MSG( id == wxID_ANY || (id >= 0 && id < 32767),
 220                   _T("invalid id value") );
 221
 222     // generate a new id if the user doesn't care about it
 223     m_windowId = id == wxID_ANY ? NewControlId() : id;
 224
 225     SetName(name);
 226     SetWindowStyleFlag(style);
 227     SetParent(parent);
 228
 229 #if wxUSE_VALIDATORS
 230     SetValidator(validator);
 231 #endif // wxUSE_VALIDATORS
 232
 233     // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
 234     // have it too - like this it's possible to set it only in the top level
 235     // dialog/frame and all children will inherit it by defult
 236     if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
 237     {
 238         SetExtraStyle(GetExtraStyle() | wxWS_EX_VALIDATE_RECURSIVELY);
 239     }
 240
 241     return true;
 242 }
 243
 244 // ----------------------------------------------------------------------------
 245 // destruction
 246 // ----------------------------------------------------------------------------
 247
 248 // common clean up
 249 wxWindowBase::~wxWindowBase()
 250 {
 251     wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
 252
 253     // FIXME if these 2 cases result from programming errors in the user code
 254     //       we should probably assert here instead of silently fixing them
 255
 256     // Just in case the window has been Closed, but we're then deleting
 257     // immediately: don't leave dangling pointers.
 258     wxPendingDelete.DeleteObject(this);
 259
 260     // Just in case we've loaded a top-level window via LoadNativeDialog but
 261     // we weren't a dialog class
 262     wxTopLevelWindows.DeleteObject((wxWindow*)this);
 263
 264     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 265
 266     // reset the dangling pointer our parent window may keep to us
 267     if ( m_parent )
 268     {
 269         if ( m_parent->GetDefaultItem() == this )
 270         {
 271             m_parent->SetDefaultItem(NULL);
 272         }
 273
 274         m_parent->RemoveChild(this);
 275     }
 276
 277 #if wxUSE_CARET
 278     delete m_caret;
 279 #endif // wxUSE_CARET
 280
 281 #if wxUSE_VALIDATORS
 282     delete m_windowValidator;
 283 #endif // wxUSE_VALIDATORS
 284
 285 #if wxUSE_CONSTRAINTS
 286     // Have to delete constraints/sizer FIRST otherwise sizers may try to look
 287     // at deleted windows as they delete themselves.
 288     DeleteRelatedConstraints();
 289
 290     if ( m_constraints )
 291     {
 292         // This removes any dangling pointers to this window in other windows'
 293         // constraintsInvolvedIn lists.
 294         UnsetConstraints(m_constraints);
 295         delete m_constraints;
 296         m_constraints = NULL;
 297     }
 298 #endif // wxUSE_CONSTRAINTS
 299
 300     if ( m_containingSizer )
 301         m_containingSizer->Detach( (wxWindow*)this );
 302
 303     delete m_windowSizer;
 304
 305 #if wxUSE_DRAG_AND_DROP
 306     delete m_dropTarget;
 307 #endif // wxUSE_DRAG_AND_DROP
 308
 309 #if wxUSE_TOOLTIPS
 310     delete m_tooltip;
 311 #endif // wxUSE_TOOLTIPS
 312
 313 #if wxUSE_ACCESSIBILITY
 314     delete m_accessible;
 315 #endif
 316 }
 317
 318 bool wxWindowBase::Destroy()
 319 {
 320     delete this;
 321
 322     return true;
 323 }
 324
 325 bool wxWindowBase::Close(bool force)
 326 {
 327     wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
 328     event.SetEventObject(this);
 329     event.SetCanVeto(!force);
 330
 331     // return false if window wasn't closed because the application vetoed the
 332     // close event
 333     return GetEventHandler()->ProcessEvent(event) && !event.GetVeto();
 334 }
 335
 336 bool wxWindowBase::DestroyChildren()
 337 {
 338     wxWindowList::compatibility_iterator node;
 339     for ( ;; )
 340     {
 341         // we iterate until the list becomes empty
 342         node = GetChildren().GetFirst();
 343         if ( !node )
 344             break;
 345
 346         wxWindow *child = node->GetData();
 347
 348         // note that we really want to call delete and not ->Destroy() here
 349         // because we want to delete the child immediately, before we are
 350         // deleted, and delayed deletion would result in problems as our (top
 351         // level) child could outlive its parent
 352         delete child;
 353
 354         wxASSERT_MSG( !GetChildren().Find(child),
 355                       wxT("child didn't remove itself using RemoveChild()") );
 356     }
 357
 358     return true;
 359 }
 360
 361 // ----------------------------------------------------------------------------
 362 // size/position related methods
 363 // ----------------------------------------------------------------------------
 364
 365 // centre the window with respect to its parent in either (or both) directions
 366 void wxWindowBase::Centre(int direction)
 367 {
 368     // the position/size of the parent window or of the entire screen
 369     wxPoint posParent;
 370     int widthParent, heightParent;
 371
 372     wxWindow *parent = NULL;
 373
 374     if ( !(direction & wxCENTRE_ON_SCREEN) )
 375     {
 376         // find the parent to centre this window on: it should be the
 377         // immediate parent for the controls but the top level parent for the
 378         // top level windows (like dialogs)
 379         parent = GetParent();
 380         if ( IsTopLevel() )
 381         {
 382             while ( parent && !parent->IsTopLevel() )
 383             {
 384                 parent = parent->GetParent();
 385             }
 386         }
 387
 388         // there is no wxTopLevelWindow under wxMotif yet
 389 #ifndef __WXMOTIF__
 390         // we shouldn't center the dialog on the iconized window: under
 391         // Windows, for example, this places it completely off the screen
 392         if ( parent )
 393         {
 394             wxTopLevelWindow *winTop = wxDynamicCast(parent, wxTopLevelWindow);
 395             if ( winTop && winTop->IsIconized() )
 396             {
 397                 parent = NULL;
 398             }
 399         }
 400 #endif // __WXMOTIF__
 401
 402         // did we find the parent?
 403         if ( !parent )
 404         {
 405             // no other choice
 406             direction |= wxCENTRE_ON_SCREEN;
 407         }
 408     }
 409
 410     if ( direction & wxCENTRE_ON_SCREEN )
 411     {
 412         // centre with respect to the whole screen
 413         wxDisplaySize(&widthParent, &heightParent);
 414     }
 415     else
 416     {
 417         if ( IsTopLevel() )
 418         {
 419             // centre on the parent
 420             parent->GetSize(&widthParent, &heightParent);
 421
 422             // adjust to the parents position
 423             posParent = parent->GetPosition();
 424         }
 425         else
 426         {
 427             // centre inside the parents client rectangle
 428             parent->GetClientSize(&widthParent, &heightParent);
 429         }
 430     }
 431
 432     int width, height;
 433     GetSize(&width, &height);
 434
 435     int xNew = wxDefaultPosition.x,
 436         yNew = wxDefaultPosition.y;
 437
 438     if ( direction & wxHORIZONTAL )
 439         xNew = (widthParent - width)/2;
 440
 441     if ( direction & wxVERTICAL )
 442         yNew = (heightParent - height)/2;
 443
 444     xNew += posParent.x;
 445     yNew += posParent.y;
 446
 447     // Base size of the visible dimensions of the display
 448     // to take into account the taskbar
 449     wxRect rect = wxGetClientDisplayRect();
 450     wxSize size (rect.width,rect.height);
 451
 452     // NB: in wxMSW, negative position may not neccessary mean "out of screen",
 453     //     but it may mean that the window is placed on other than the main
 454     //     display. Therefore we only make sure centered window is on the main display
 455     //     if the parent is at least partially present here.
 456     if (posParent.x + widthParent >= 0)  // if parent is (partially) on the main display
 457     {
 458         if (xNew < 0)
 459             xNew = 0;
 460         else if (xNew+width > size.x)
 461             xNew = size.x-width-1;
 462     }
 463     if (posParent.y + heightParent >= 0)  // if parent is (partially) on the main display
 464     {
 465         if (yNew+height > size.y)
 466             yNew = size.y-height-1;
 467
 468         // Make certain that the title bar is initially visible
 469         // always, even if this would push the bottom of the
 470         // dialog of the visible area of the display
 471         if (yNew < 0)
 472             yNew = 0;
 473     }
 474
 475     // move the window to this position (keeping the old size but using
 476     // SetSize() and not Move() to allow xNew and/or yNew to be -1)
 477     SetSize(xNew, yNew, width, height, wxSIZE_ALLOW_MINUS_ONE);
 478 }
 479
 480 // fits the window around the children
 481 void wxWindowBase::Fit()
 482 {
 483     if ( GetChildren().GetCount() > 0 )
 484     {
 485         SetClientSize(DoGetBestSize());
 486     }
 487     //else: do nothing if we have no children
 488 }
 489
 490 // fits virtual size (ie. scrolled area etc.) around children
 491 void wxWindowBase::FitInside()
 492 {
 493     if ( GetChildren().GetCount() > 0 )
 494     {
 495         SetVirtualSize( GetBestVirtualSize() );
 496     }
 497 }
 498
 499 // On Mac, scrollbars are explicitly children.
 500 #ifdef __WXMAC__
 501 static bool wxHasRealChildren(const wxWindowBase* win)
 502 {
 503     int realChildCount = 0;
 504
 505     for ( wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
 506           node;
 507           node = node->GetNext() )
 508     {
 509         wxWindow *win = node->GetData();
 510         if ( !win->IsTopLevel() && win->IsShown() && !win->IsKindOf(CLASSINFO(wxScrollBar)))
 511             realChildCount ++;
 512     }
 513     return (realChildCount > 0);
 514 }
 515 #endif
 516
 517 // return the size best suited for the current window
 518 wxSize wxWindowBase::DoGetBestSize() const
 519 {
 520     if ( m_windowSizer )
 521     {
 522         return m_windowSizer->GetMinSize();
 523     }
 524 #if wxUSE_CONSTRAINTS
 525     else if ( m_constraints )
 526     {
 527         wxConstCast(this, wxWindowBase)->SatisfyConstraints();
 528
 529         // our minimal acceptable size is such that all our windows fit inside
 530         int maxX = 0,
 531             maxY = 0;
 532
 533         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 534               node;
 535               node = node->GetNext() )
 536         {
 537             wxLayoutConstraints *c = node->GetData()->GetConstraints();
 538             if ( !c )
 539             {
 540                 // it's not normal that we have an unconstrained child, but
 541                 // what can we do about it?
 542                 continue;
 543             }
 544
 545             int x = c->right.GetValue(),
 546                 y = c->bottom.GetValue();
 547
 548             if ( x > maxX )
 549                 maxX = x;
 550
 551             if ( y > maxY )
 552                 maxY = y;
 553
 554             // TODO: we must calculate the overlaps somehow, otherwise we
 555             //       will never return a size bigger than the current one :-(
 556         }
 557
 558         return wxSize(maxX, maxY);
 559     }
 560 #endif // wxUSE_CONSTRAINTS
 561     else if ( !GetChildren().empty()
 562 #ifdef __WXMAC__
 563               && wxHasRealChildren(this)
 564 #endif
 565               )
 566     {
 567         // our minimal acceptable size is such that all our visible child windows fit inside
 568         int maxX = 0,
 569             maxY = 0;
 570
 571         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 572               node;
 573               node = node->GetNext() )
 574         {
 575             wxWindow *win = node->GetData();
 576             if ( win->IsTopLevel()  || ( ! win->IsShown() )
 577 #if wxUSE_STATUSBAR
 578                     || wxDynamicCast(win, wxStatusBar)
 579 #endif // wxUSE_STATUSBAR
 580                )
 581             {
 582                 // dialogs and frames lie in different top level windows -
 583                 // don't deal with them here; as for the status bars, they
 584                 // don't lie in the client area at all
 585                 continue;
 586             }
 587
 588             int wx, wy, ww, wh;
 589             win->GetPosition(&wx, &wy);
 590
 591             // if the window hadn't been positioned yet, assume that it is in
 592             // the origin
 593             if ( wx == wxDefaultPosition.x )
 594                 wx = 0;
 595             if ( wy == wxDefaultPosition.y )
 596                 wy = 0;
 597
 598             win->GetSize(&ww, &wh);
 599             if ( wx + ww > maxX )
 600                 maxX = wx + ww;
 601             if ( wy + wh > maxY )
 602                 maxY = wy + wh;
 603         }
 604
 605         // for compatibility with the old versions and because it really looks
 606         // slightly more pretty like this, add a pad
 607         maxX += 7;
 608         maxY += 14;
 609
 610         return wxSize(maxX, maxY);
 611     }
 612     else // ! has children
 613     {
 614         // for a generic window there is no natural best size - just use either the
 615         // minimum size if there is one, or the current size
 616         if ( GetMinSize().IsFullySpecified() )
 617             return GetMinSize();
 618         else
 619             return GetSize();
 620     }
 621 }
 622
 623 void wxWindowBase::SetBestSize(const wxSize& size)
 624 {
 625     // If the given size is incomplete then merge with the best size.
 626     wxSize sizeBest;
 627     if ( size.x == wxDefaultSize.x || size.y == wxDefaultSize.y )
 628     {
 629         sizeBest = DoGetBestSize();
 630         if ( size.x != wxDefaultSize.x )
 631             sizeBest.x = size.x;
 632         if ( size.y != wxDefaultSize.y )
 633             sizeBest.y = size.y;
 634     }
 635     else // have complete explicit size
 636     {
 637         sizeBest = size;
 638     }
 639
 640     // Change the size if needed
 641     if (GetSize() != sizeBest)
 642         SetSize(sizeBest);
 643
 644     // don't shrink the control below its best size
 645     m_minWidth = sizeBest.x;
 646     m_minHeight = sizeBest.y;
 647 }
 648
 649 // by default the origin is not shifted
 650 wxPoint wxWindowBase::GetClientAreaOrigin() const
 651 {
 652     return wxPoint(0, 0);
 653 }
 654
 655 // set the min/max size of the window
 656 void wxWindowBase::SetSizeHints(int minW, int minH,
 657                                 int maxW, int maxH,
 658                                 int WXUNUSED(incW), int WXUNUSED(incH))
 659 {
 660     // setting min width greater than max width leads to infinite loops under
 661     // X11 and generally doesn't make any sense, so don't allow it
 662     wxCHECK_RET( (minW == wxDefaultSize.x || maxW == wxDefaultSize.x || minW <= maxW) &&
 663                     (minH == wxDefaultSize.y || maxH == wxDefaultSize.y || minH <= maxH),
 664                  _T("min width/height must be less than max width/height!") );
 665
 666     m_minWidth = minW;
 667     m_maxWidth = maxW;
 668     m_minHeight = minH;
 669     m_maxHeight = maxH;
 670 }
 671
 672 void wxWindowBase::SetWindowVariant( wxWindowVariant variant )
 673 {
 674     if ( m_windowVariant != variant )
 675     {
 676         m_windowVariant = variant;
 677
 678         DoSetWindowVariant(variant);
 679     }
 680 }
 681
 682 void wxWindowBase::DoSetWindowVariant( wxWindowVariant variant )
 683 {
 684     // adjust the font height to correspond to our new variant (notice that
 685     // we're only called if something really changed)
 686     wxFont font = GetFont();
 687     int size = font.GetPointSize();
 688     switch ( variant )
 689     {
 690         case wxWINDOW_VARIANT_NORMAL:
 691             break;
 692
 693         case wxWINDOW_VARIANT_SMALL:
 694             size *= 3;
 695             size /= 4;
 696             break;
 697
 698         case wxWINDOW_VARIANT_MINI:
 699             size *= 2;
 700             size /= 3;
 701             break;
 702
 703         case wxWINDOW_VARIANT_LARGE:
 704             size *= 5;
 705             size /= 4;
 706             break;
 707
 708         default:
 709             wxFAIL_MSG(_T("unexpected window variant"));
 710             break;
 711     }
 712
 713     font.SetPointSize(size);
 714     SetFont(font);
 715 }
 716
 717 void wxWindowBase::SetVirtualSizeHints( int minW, int minH,
 718                                         int maxW, int maxH )
 719 {
 720     m_minVirtualWidth = minW;
 721     m_maxVirtualWidth = maxW;
 722     m_minVirtualHeight = minH;
 723     m_maxVirtualHeight = maxH;
 724 }
 725
 726 void wxWindowBase::DoSetVirtualSize( int x, int y )
 727 {
 728     if ( m_minVirtualWidth != wxDefaultSize.x && m_minVirtualWidth > x )
 729         x = m_minVirtualWidth;
 730     if ( m_maxVirtualWidth != wxDefaultSize.x && m_maxVirtualWidth < x )
 731         x = m_maxVirtualWidth;
 732     if ( m_minVirtualHeight != wxDefaultSize.y && m_minVirtualHeight > y )
 733         y = m_minVirtualHeight;
 734     if ( m_maxVirtualHeight != wxDefaultSize.y && m_maxVirtualHeight < y )
 735         y = m_maxVirtualHeight;
 736
 737     m_virtualSize = wxSize(x, y);
 738 }
 739
 740 wxSize wxWindowBase::DoGetVirtualSize() const
 741 {
 742     wxSize  s( GetClientSize() );
 743
 744     return wxSize( wxMax( m_virtualSize.GetWidth(), s.GetWidth() ),
 745                    wxMax( m_virtualSize.GetHeight(), s.GetHeight() ) );
 746 }
 747
 748 // ----------------------------------------------------------------------------
 749 // show/hide/enable/disable the window
 750 // ----------------------------------------------------------------------------
 751
 752 bool wxWindowBase::Show(bool show)
 753 {
 754     if ( show != m_isShown )
 755     {
 756         m_isShown = show;
 757
 758         return true;
 759     }
 760     else
 761     {
 762         return false;
 763     }
 764 }
 765
 766 bool wxWindowBase::Enable(bool enable)
 767 {
 768     if ( enable != m_isEnabled )
 769     {
 770         m_isEnabled = enable;
 771
 772         return true;
 773     }
 774     else
 775     {
 776         return false;
 777     }
 778 }
 779 // ----------------------------------------------------------------------------
 780 // RTTI
 781 // ----------------------------------------------------------------------------
 782
 783 bool wxWindowBase::IsTopLevel() const
 784 {
 785     return false;
 786 }
 787
 788 // ----------------------------------------------------------------------------
 789 // reparenting the window
 790 // ----------------------------------------------------------------------------
 791
 792 void wxWindowBase::AddChild(wxWindowBase *child)
 793 {
 794     wxCHECK_RET( child, wxT("can't add a NULL child") );
 795
 796     // this should never happen and it will lead to a crash later if it does
 797     // because RemoveChild() will remove only one node from the children list
 798     // and the other(s) one(s) will be left with dangling pointers in them
 799     wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), _T("AddChild() called twice") );
 800
 801     GetChildren().Append((wxWindow*)child);
 802     child->SetParent(this);
 803 }
 804
 805 void wxWindowBase::RemoveChild(wxWindowBase *child)
 806 {
 807     wxCHECK_RET( child, wxT("can't remove a NULL child") );
 808
 809     GetChildren().DeleteObject((wxWindow *)child);
 810     child->SetParent(NULL);
 811 }
 812
 813 bool wxWindowBase::Reparent(wxWindowBase *newParent)
 814 {
 815     wxWindow *oldParent = GetParent();
 816     if ( newParent == oldParent )
 817     {
 818         // nothing done
 819         return false;
 820     }
 821
 822     // unlink this window from the existing parent.
 823     if ( oldParent )
 824     {
 825         oldParent->RemoveChild(this);
 826     }
 827     else
 828     {
 829         wxTopLevelWindows.DeleteObject((wxWindow *)this);
 830     }
 831
 832     // add it to the new one
 833     if ( newParent )
 834     {
 835         newParent->AddChild(this);
 836     }
 837     else
 838     {
 839         wxTopLevelWindows.Append((wxWindow *)this);
 840     }
 841
 842     return true;
 843 }
 844
 845 // ----------------------------------------------------------------------------
 846 // event handler stuff
 847 // ----------------------------------------------------------------------------
 848
 849 void wxWindowBase::PushEventHandler(wxEvtHandler *handler)
 850 {
 851     wxEvtHandler *handlerOld = GetEventHandler();
 852
 853     handler->SetNextHandler(handlerOld);
 854
 855     if ( handlerOld )
 856         GetEventHandler()->SetPreviousHandler(handler);
 857
 858     SetEventHandler(handler);
 859 }
 860
 861 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
 862 {
 863     wxEvtHandler *handlerA = GetEventHandler();
 864     if ( handlerA )
 865     {
 866         wxEvtHandler *handlerB = handlerA->GetNextHandler();
 867         handlerA->SetNextHandler((wxEvtHandler *)NULL);
 868
 869         if ( handlerB )
 870             handlerB->SetPreviousHandler((wxEvtHandler *)NULL);
 871         SetEventHandler(handlerB);
 872
 873         if ( deleteHandler )
 874         {
 875             delete handlerA;
 876             handlerA = (wxEvtHandler *)NULL;
 877         }
 878     }
 879
 880     return handlerA;
 881 }
 882
 883 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handler)
 884 {
 885     wxCHECK_MSG( handler, false, _T("RemoveEventHandler(NULL) called") );
 886
 887     wxEvtHandler *handlerPrev = NULL,
 888                  *handlerCur = GetEventHandler();
 889     while ( handlerCur )
 890     {
 891         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
 892
 893         if ( handlerCur == handler )
 894         {
 895             if ( handlerPrev )
 896             {
 897                 handlerPrev->SetNextHandler(handlerNext);
 898             }
 899             else
 900             {
 901                 SetEventHandler(handlerNext);
 902             }
 903
 904             if ( handlerNext )
 905             {
 906                 handlerNext->SetPreviousHandler ( handlerPrev );
 907             }
 908
 909             handler->SetNextHandler(NULL);
 910             handler->SetPreviousHandler(NULL);
 911
 912             return true;
 913         }
 914
 915         handlerPrev = handlerCur;
 916         handlerCur = handlerNext;
 917     }
 918
 919     wxFAIL_MSG( _T("where has the event handler gone?") );
 920
 921     return false;
 922 }
 923
 924 // ----------------------------------------------------------------------------
 925 // colours, fonts &c
 926 // ----------------------------------------------------------------------------
 927
 928 void wxWindowBase::InheritAttributes()
 929 {
 930     const wxWindowBase * const parent = GetParent();
 931     if ( !parent )
 932         return;
 933
 934     // we only inherit attributes which had been explicitly set for the parent
 935     // which ensures that this only happens if the user really wants it and
 936     // not by default which wouldn't make any sense in modern GUIs where the
 937     // controls don't all use the same fonts (nor colours)
 938     if ( parent->m_hasFont && !m_hasFont )
 939         SetFont(parent->GetFont());
 940
 941     // in addition, there is a possibility to explicitly forbid inheriting
 942     // colours at each class level by overriding ShouldInheritColours()
 943     if ( ShouldInheritColours() )
 944     {
 945         if ( parent->m_hasFgCol && !m_hasFgCol )
 946             SetForegroundColour(parent->GetForegroundColour());
 947
 948         if ( parent->m_hasBgCol && !m_hasBgCol )
 949             SetBackgroundColour(parent->GetBackgroundColour());
 950     }
 951 }
 952
 953 /* static */ wxVisualAttributes
 954 wxWindowBase::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 955 {
 956     // it is important to return valid values for all attributes from here,
 957     // GetXXX() below rely on this
 958     wxVisualAttributes attrs;
 959     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
 960     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
 961     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
 962
 963     return attrs;
 964 }
 965
 966 wxColour wxWindowBase::GetBackgroundColour() const
 967 {
 968     if ( !m_backgroundColour.Ok() )
 969     {
 970         wxASSERT_MSG( !m_hasBgCol, _T("we have invalid explicit bg colour?") );
 971
 972         // get our default background colour
 973         wxColour colBg = GetDefaultAttributes().colBg;
 974
 975         // we must return some valid colour to avoid redoing this every time
 976         // and also to avoid surprizing the applications written for older
 977         // wxWidgets versions where GetBackgroundColour() always returned
 978         // something -- so give them something even if it doesn't make sense
 979         // for this window (e.g. it has a themed background)
 980         if ( !colBg.Ok() )
 981             colBg = GetClassDefaultAttributes().colBg;
 982
 983         // cache it for the next call
 984         wxConstCast(this, wxWindowBase)->m_backgroundColour = colBg;
 985     }
 986
 987     return m_backgroundColour;
 988 }
 989
 990 wxColour wxWindowBase::GetForegroundColour() const
 991 {
 992     // logic is the same as above
 993     if ( !m_hasFgCol && !m_foregroundColour.Ok() )
 994     {
 995         wxASSERT_MSG( !m_hasFgCol, _T("we have invalid explicit fg colour?") );
 996
 997         wxColour colFg = GetDefaultAttributes().colFg;
 998
 999         if ( !colFg.Ok() )
1000             colFg = GetClassDefaultAttributes().colFg;
1001
1002         wxConstCast(this, wxWindowBase)->m_foregroundColour = colFg;
1003     }
1004
1005     return m_foregroundColour;
1006 }
1007
1008 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
1009 {
1010     if ( colour == m_backgroundColour )
1011         return false;
1012
1013     m_hasBgCol = colour.Ok();
1014     m_backgroundColour = colour;
1015     SetThemeEnabled( !m_hasBgCol && !m_foregroundColour.Ok() );
1016     return true;
1017 }
1018
1019 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
1020 {
1021     if (colour == m_foregroundColour )
1022         return false;
1023
1024     m_hasFgCol = colour.Ok();
1025     m_foregroundColour = colour;
1026     SetThemeEnabled( !m_hasFgCol && !m_backgroundColour.Ok() );
1027     return true;
1028 }
1029
1030 bool wxWindowBase::SetCursor(const wxCursor& cursor)
1031 {
1032     // setting an invalid cursor is ok, it means that we don't have any special
1033     // cursor
1034     if ( m_cursor == cursor )
1035     {
1036         // no change
1037         return false;
1038     }
1039
1040     m_cursor = cursor;
1041
1042     return true;
1043 }
1044
1045 wxFont& wxWindowBase::DoGetFont() const
1046 {
1047     // logic is the same as in GetBackgroundColour()
1048     if ( !m_font.Ok() )
1049     {
1050         wxASSERT_MSG( !m_hasFont, _T("we have invalid explicit font?") );
1051
1052         wxFont font = GetDefaultAttributes().font;
1053         if ( !font.Ok() )
1054             font = GetClassDefaultAttributes().font;
1055
1056         wxConstCast(this, wxWindowBase)->m_font = font;
1057     }
1058
1059     // cast is here for non-const GetFont() convenience
1060     return wxConstCast(this, wxWindowBase)->m_font;
1061 }
1062
1063 bool wxWindowBase::SetFont(const wxFont& font)
1064 {
1065     if ( !font.Ok() )
1066         return false;
1067
1068     if ( font == m_font )
1069     {
1070         // no change
1071         return false;
1072     }
1073
1074     m_font = font;
1075
1076     m_hasFont = true;
1077
1078     return true;
1079 }
1080
1081 #if wxUSE_PALETTE
1082
1083 void wxWindowBase::SetPalette(const wxPalette& pal)
1084 {
1085     m_hasCustomPalette = true;
1086     m_palette = pal;
1087
1088     // VZ: can anyone explain me what do we do here?
1089     wxWindowDC d((wxWindow *) this);
1090     d.SetPalette(pal);
1091 }
1092
1093 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
1094 {
1095     wxWindow *win = (wxWindow *)this;
1096     while ( win && !win->HasCustomPalette() )
1097     {
1098         win = win->GetParent();
1099     }
1100
1101     return win;
1102 }
1103
1104 #endif // wxUSE_PALETTE
1105
1106 #if wxUSE_CARET
1107 void wxWindowBase::SetCaret(wxCaret *caret)
1108 {
1109     if ( m_caret )
1110     {
1111         delete m_caret;
1112     }
1113
1114     m_caret = caret;
1115
1116     if ( m_caret )
1117     {
1118         wxASSERT_MSG( m_caret->GetWindow() == this,
1119                       wxT("caret should be created associated to this window") );
1120     }
1121 }
1122 #endif // wxUSE_CARET
1123
1124 #if wxUSE_VALIDATORS
1125 // ----------------------------------------------------------------------------
1126 // validators
1127 // ----------------------------------------------------------------------------
1128
1129 void wxWindowBase::SetValidator(const wxValidator& validator)
1130 {
1131     if ( m_windowValidator )
1132         delete m_windowValidator;
1133
1134     m_windowValidator = (wxValidator *)validator.Clone();
1135
1136     if ( m_windowValidator )
1137         m_windowValidator->SetWindow(this);
1138 }
1139 #endif // wxUSE_VALIDATORS
1140
1141 // ----------------------------------------------------------------------------
1142 // update region stuff
1143 // ----------------------------------------------------------------------------
1144
1145 wxRect wxWindowBase::GetUpdateClientRect() const
1146 {
1147     wxRegion rgnUpdate = GetUpdateRegion();
1148     rgnUpdate.Intersect(GetClientRect());
1149     wxRect rectUpdate = rgnUpdate.GetBox();
1150     wxPoint ptOrigin = GetClientAreaOrigin();
1151     rectUpdate.x -= ptOrigin.x;
1152     rectUpdate.y -= ptOrigin.y;
1153
1154     return rectUpdate;
1155 }
1156
1157 bool wxWindowBase::IsExposed(int x, int y) const
1158 {
1159     return m_updateRegion.Contains(x, y) != wxOutRegion;
1160 }
1161
1162 bool wxWindowBase::IsExposed(int x, int y, int w, int h) const
1163 {
1164     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
1165 }
1166
1167 void wxWindowBase::ClearBackground()
1168 {
1169     // wxGTK uses its own version, no need to add never used code
1170 #ifndef __WXGTK__
1171     wxClientDC dc((wxWindow *)this);
1172     wxBrush brush(GetBackgroundColour(), wxSOLID);
1173     dc.SetBackground(brush);
1174     dc.Clear();
1175 #endif // __WXGTK__
1176 }
1177
1178 // ----------------------------------------------------------------------------
1179 // find child window by id or name
1180 // ----------------------------------------------------------------------------
1181
1182 wxWindow *wxWindowBase::FindWindow( long id )
1183 {
1184     if ( id == m_windowId )
1185         return (wxWindow *)this;
1186
1187     wxWindowBase *res = (wxWindow *)NULL;
1188     wxWindowList::compatibility_iterator node;
1189     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1190     {
1191         wxWindowBase *child = node->GetData();
1192         res = child->FindWindow( id );
1193     }
1194
1195     return (wxWindow *)res;
1196 }
1197
1198 wxWindow *wxWindowBase::FindWindow( const wxString& name )
1199 {
1200     if ( name == m_windowName )
1201         return (wxWindow *)this;
1202
1203     wxWindowBase *res = (wxWindow *)NULL;
1204     wxWindowList::compatibility_iterator node;
1205     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1206     {
1207         wxWindow *child = node->GetData();
1208         res = child->FindWindow(name);
1209     }
1210
1211     return (wxWindow *)res;
1212 }
1213
1214
1215 // find any window by id or name or label: If parent is non-NULL, look through
1216 // children for a label or title matching the specified string. If NULL, look
1217 // through all top-level windows.
1218 //
1219 // to avoid duplicating code we reuse the same helper function but with
1220 // different comparators
1221
1222 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1223                                 const wxString& label, long id);
1224
1225 static
1226 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1227                            long WXUNUSED(id))
1228 {
1229     return win->GetLabel() == label;
1230 }
1231
1232 static
1233 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1234                           long WXUNUSED(id))
1235 {
1236     return win->GetName() == label;
1237 }
1238
1239 static
1240 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1241                         long id)
1242 {
1243     return win->GetId() == id;
1244 }
1245
1246 // recursive helper for the FindWindowByXXX() functions
1247 static
1248 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1249                                   const wxString& label,
1250                                   long id,
1251                                   wxFindWindowCmp cmp)
1252 {
1253     if ( parent )
1254     {
1255         // see if this is the one we're looking for
1256         if ( (*cmp)(parent, label, id) )
1257             return (wxWindow *)parent;
1258
1259         // It wasn't, so check all its children
1260         for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
1261               node;
1262               node = node->GetNext() )
1263         {
1264             // recursively check each child
1265             wxWindow *win = (wxWindow *)node->GetData();
1266             wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1267             if (retwin)
1268                 return retwin;
1269         }
1270     }
1271
1272     // Not found
1273     return NULL;
1274 }
1275
1276 // helper for FindWindowByXXX()
1277 static
1278 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1279                              const wxString& label,
1280                              long id,
1281                              wxFindWindowCmp cmp)
1282 {
1283     if ( parent )
1284     {
1285         // just check parent and all its children
1286         return wxFindWindowRecursively(parent, label, id, cmp);
1287     }
1288
1289     // start at very top of wx's windows
1290     for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1291           node;
1292           node = node->GetNext() )
1293     {
1294         // recursively check each window & its children
1295         wxWindow *win = node->GetData();
1296         wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1297         if (retwin)
1298             return retwin;
1299     }
1300
1301     return NULL;
1302 }
1303
1304 /* static */
1305 wxWindow *
1306 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1307 {
1308     return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1309 }
1310
1311 /* static */
1312 wxWindow *
1313 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1314 {
1315     wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1316
1317     if ( !win )
1318     {
1319         // fall back to the label
1320         win = FindWindowByLabel(title, parent);
1321     }
1322
1323     return win;
1324 }
1325
1326 /* static */
1327 wxWindow *
1328 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1329 {
1330     return wxFindWindowHelper(parent, _T(""), id, wxFindWindowCmpIds);
1331 }
1332
1333 // ----------------------------------------------------------------------------
1334 // dialog oriented functions
1335 // ----------------------------------------------------------------------------
1336
1337 void wxWindowBase::MakeModal(bool modal)
1338 {
1339     // Disable all other windows
1340     if ( IsTopLevel() )
1341     {
1342         wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1343         while (node)
1344         {
1345             wxWindow *win = node->GetData();
1346             if (win != this)
1347                 win->Enable(!modal);
1348
1349             node = node->GetNext();
1350         }
1351     }
1352 }
1353
1354 bool wxWindowBase::Validate()
1355 {
1356 #if wxUSE_VALIDATORS
1357     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1358
1359     wxWindowList::compatibility_iterator node;
1360     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1361     {
1362         wxWindowBase *child = node->GetData();
1363         wxValidator *validator = child->GetValidator();
1364         if ( validator && !validator->Validate((wxWindow *)this) )
1365         {
1366             return false;
1367         }
1368
1369         if ( recurse && !child->Validate() )
1370         {
1371             return false;
1372         }
1373     }
1374 #endif // wxUSE_VALIDATORS
1375
1376     return true;
1377 }
1378
1379 bool wxWindowBase::TransferDataToWindow()
1380 {
1381 #if wxUSE_VALIDATORS
1382     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1383
1384     wxWindowList::compatibility_iterator node;
1385     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1386     {
1387         wxWindowBase *child = node->GetData();
1388         wxValidator *validator = child->GetValidator();
1389         if ( validator && !validator->TransferToWindow() )
1390         {
1391             wxLogWarning(_("Could not transfer data to window"));
1392 #if wxUSE_LOG
1393             wxLog::FlushActive();
1394 #endif // wxUSE_LOG
1395
1396             return false;
1397         }
1398
1399         if ( recurse )
1400         {
1401             if ( !child->TransferDataToWindow() )
1402             {
1403                 // warning already given
1404                 return false;
1405             }
1406         }
1407     }
1408 #endif // wxUSE_VALIDATORS
1409
1410     return true;
1411 }
1412
1413 bool wxWindowBase::TransferDataFromWindow()
1414 {
1415 #if wxUSE_VALIDATORS
1416     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1417
1418     wxWindowList::compatibility_iterator node;
1419     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1420     {
1421         wxWindow *child = node->GetData();
1422         wxValidator *validator = child->GetValidator();
1423         if ( validator && !validator->TransferFromWindow() )
1424         {
1425             // nop warning here because the application is supposed to give
1426             // one itself - we don't know here what might have gone wrongly
1427
1428             return false;
1429         }
1430
1431         if ( recurse )
1432         {
1433             if ( !child->TransferDataFromWindow() )
1434             {
1435                 // warning already given
1436                 return false;
1437             }
1438         }
1439     }
1440 #endif // wxUSE_VALIDATORS
1441
1442     return true;
1443 }
1444
1445 void wxWindowBase::InitDialog()
1446 {
1447     wxInitDialogEvent event(GetId());
1448     event.SetEventObject( this );
1449     GetEventHandler()->ProcessEvent(event);
1450 }
1451
1452 // ----------------------------------------------------------------------------
1453 // context-sensitive help support
1454 // ----------------------------------------------------------------------------
1455
1456 #if wxUSE_HELP
1457
1458 // associate this help text with this window
1459 void wxWindowBase::SetHelpText(const wxString& text)
1460 {
1461     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1462     if ( helpProvider )
1463     {
1464         helpProvider->AddHelp(this, text);
1465     }
1466 }
1467
1468 // associate this help text with all windows with the same id as this
1469 // one
1470 void wxWindowBase::SetHelpTextForId(const wxString& text)
1471 {
1472     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1473     if ( helpProvider )
1474     {
1475         helpProvider->AddHelp(GetId(), text);
1476     }
1477 }
1478
1479 // get the help string associated with this window (may be empty)
1480 wxString wxWindowBase::GetHelpText() const
1481 {
1482     wxString text;
1483     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1484     if ( helpProvider )
1485     {
1486         text = helpProvider->GetHelp(this);
1487     }
1488
1489     return text;
1490 }
1491
1492 // show help for this window
1493 void wxWindowBase::OnHelp(wxHelpEvent& event)
1494 {
1495     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1496     if ( helpProvider )
1497     {
1498         if ( helpProvider->ShowHelp(this) )
1499         {
1500             // skip the event.Skip() below
1501             return;
1502         }
1503     }
1504
1505     event.Skip();
1506 }
1507
1508 #endif // wxUSE_HELP
1509
1510 // ----------------------------------------------------------------------------
1511 // tooltipsroot.Replace("\\", "/");
1512 // ----------------------------------------------------------------------------
1513
1514 #if wxUSE_TOOLTIPS
1515
1516 void wxWindowBase::SetToolTip( const wxString &tip )
1517 {
1518     // don't create the new tooltip if we already have one
1519     if ( m_tooltip )
1520     {
1521         m_tooltip->SetTip( tip );
1522     }
1523     else
1524     {
1525         SetToolTip( new wxToolTip( tip ) );
1526     }
1527
1528     // setting empty tooltip text does not remove the tooltip any more - use
1529     // SetToolTip((wxToolTip *)NULL) for this
1530 }
1531
1532 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1533 {
1534     if ( m_tooltip )
1535         delete m_tooltip;
1536
1537     m_tooltip = tooltip;
1538 }
1539
1540 #endif // wxUSE_TOOLTIPS
1541
1542 // ----------------------------------------------------------------------------
1543 // constraints and sizers
1544 // ----------------------------------------------------------------------------
1545
1546 #if wxUSE_CONSTRAINTS
1547
1548 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1549 {
1550     if ( m_constraints )
1551     {
1552         UnsetConstraints(m_constraints);
1553         delete m_constraints;
1554     }
1555     m_constraints = constraints;
1556     if ( m_constraints )
1557     {
1558         // Make sure other windows know they're part of a 'meaningful relationship'
1559         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1560             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1561         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1562             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1563         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1564             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1565         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1566             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1567         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1568             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1569         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1570             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1571         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1572             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1573         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1574             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1575     }
1576 }
1577
1578 // This removes any dangling pointers to this window in other windows'
1579 // constraintsInvolvedIn lists.
1580 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1581 {
1582     if ( c )
1583     {
1584         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1585             c->left.GetOtherWindow()->RemoveConstraintReference(this);
1586         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1587             c->top.GetOtherWindow()->RemoveConstraintReference(this);
1588         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1589             c->right.GetOtherWindow()->RemoveConstraintReference(this);
1590         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1591             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1592         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1593             c->width.GetOtherWindow()->RemoveConstraintReference(this);
1594         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1595             c->height.GetOtherWindow()->RemoveConstraintReference(this);
1596         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1597             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
1598         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
1599             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
1600     }
1601 }
1602
1603 // Back-pointer to other windows we're involved with, so if we delete this
1604 // window, we must delete any constraints we're involved with.
1605 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
1606 {
1607     if ( !m_constraintsInvolvedIn )
1608         m_constraintsInvolvedIn = new wxWindowList;
1609     if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
1610         m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
1611 }
1612
1613 // REMOVE back-pointer to other windows we're involved with.
1614 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
1615 {
1616     if ( m_constraintsInvolvedIn )
1617         m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
1618 }
1619
1620 // Reset any constraints that mention this window
1621 void wxWindowBase::DeleteRelatedConstraints()
1622 {
1623     if ( m_constraintsInvolvedIn )
1624     {
1625         wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
1626         while (node)
1627         {
1628             wxWindow *win = node->GetData();
1629             wxLayoutConstraints *constr = win->GetConstraints();
1630
1631             // Reset any constraints involving this window
1632             if ( constr )
1633             {
1634                 constr->left.ResetIfWin(this);
1635                 constr->top.ResetIfWin(this);
1636                 constr->right.ResetIfWin(this);
1637                 constr->bottom.ResetIfWin(this);
1638                 constr->width.ResetIfWin(this);
1639                 constr->height.ResetIfWin(this);
1640                 constr->centreX.ResetIfWin(this);
1641                 constr->centreY.ResetIfWin(this);
1642             }
1643
1644             wxWindowList::compatibility_iterator next = node->GetNext();
1645             m_constraintsInvolvedIn->Erase(node);
1646             node = next;
1647         }
1648
1649         delete m_constraintsInvolvedIn;
1650         m_constraintsInvolvedIn = (wxWindowList *) NULL;
1651     }
1652 }
1653
1654 #endif // wxUSE_CONSTRAINTS
1655
1656 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
1657 {
1658     if ( sizer == m_windowSizer)
1659         return;
1660
1661     if ( deleteOld )
1662         delete m_windowSizer;
1663
1664     m_windowSizer = sizer;
1665
1666     SetAutoLayout( sizer != NULL );
1667 }
1668
1669 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
1670 {
1671     SetSizer( sizer, deleteOld );
1672     sizer->SetSizeHints( (wxWindow*) this );
1673 }
1674
1675
1676 void wxWindowBase::SetContainingSizer(wxSizer* sizer)
1677 {
1678     // adding a window to a sizer twice is going to result in fatal and
1679     // hard to debug problems later because when deleting the second
1680     // associated wxSizerItem we're going to dereference a dangling
1681     // pointer; so try to detect this as early as possible
1682     wxASSERT_MSG( !sizer || m_containingSizer != sizer,
1683                   _T("Adding a window to the same sizer twice?") );
1684
1685     m_containingSizer = sizer;
1686 }
1687
1688 #if wxUSE_CONSTRAINTS
1689
1690 void wxWindowBase::SatisfyConstraints()
1691 {
1692     wxLayoutConstraints *constr = GetConstraints();
1693     bool wasOk = constr && constr->AreSatisfied();
1694
1695     ResetConstraints();   // Mark all constraints as unevaluated
1696
1697     int noChanges = 1;
1698
1699     // if we're a top level panel (i.e. our parent is frame/dialog), our
1700     // own constraints will never be satisfied any more unless we do it
1701     // here
1702     if ( wasOk )
1703     {
1704         while ( noChanges > 0 )
1705         {
1706             LayoutPhase1(&noChanges);
1707         }
1708     }
1709
1710     LayoutPhase2(&noChanges);
1711 }
1712
1713 #endif // wxUSE_CONSTRAINTS
1714
1715 bool wxWindowBase::Layout()
1716 {
1717     // If there is a sizer, use it instead of the constraints
1718     if ( GetSizer() )
1719     {
1720         int w, h;
1721         GetVirtualSize(&w, &h);
1722         GetSizer()->SetDimension( 0, 0, w, h );
1723     }
1724 #if wxUSE_CONSTRAINTS
1725     else
1726     {
1727         SatisfyConstraints(); // Find the right constraints values
1728         SetConstraintSizes(); // Recursively set the real window sizes
1729     }
1730 #endif
1731
1732     return true;
1733 }
1734
1735 #if wxUSE_CONSTRAINTS
1736
1737 // first phase of the constraints evaluation: set our own constraints
1738 bool wxWindowBase::LayoutPhase1(int *noChanges)
1739 {
1740     wxLayoutConstraints *constr = GetConstraints();
1741
1742     return !constr || constr->SatisfyConstraints(this, noChanges);
1743 }
1744
1745 // second phase: set the constraints for our children
1746 bool wxWindowBase::LayoutPhase2(int *noChanges)
1747 {
1748     *noChanges = 0;
1749
1750     // Layout children
1751     DoPhase(1);
1752
1753     // Layout grand children
1754     DoPhase(2);
1755
1756     return true;
1757 }
1758
1759 // Do a phase of evaluating child constraints
1760 bool wxWindowBase::DoPhase(int phase)
1761 {
1762     // the list containing the children for which the constraints are already
1763     // set correctly
1764     wxWindowList succeeded;
1765
1766     // the max number of iterations we loop before concluding that we can't set
1767     // the constraints
1768     static const int maxIterations = 500;
1769
1770     for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
1771     {
1772         int noChanges = 0;
1773
1774         // loop over all children setting their constraints
1775         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1776               node;
1777               node = node->GetNext() )
1778         {
1779             wxWindow *child = node->GetData();
1780             if ( child->IsTopLevel() )
1781             {
1782                 // top level children are not inside our client area
1783                 continue;
1784             }
1785
1786             if ( !child->GetConstraints() || succeeded.Find(child) )
1787             {
1788                 // this one is either already ok or nothing we can do about it
1789                 continue;
1790             }
1791
1792             int tempNoChanges = 0;
1793             bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
1794                                       : child->LayoutPhase2(&tempNoChanges);
1795             noChanges += tempNoChanges;
1796
1797             if ( success )
1798             {
1799                 succeeded.Append(child);
1800             }
1801         }
1802
1803         if ( !noChanges )
1804         {
1805             // constraints are set
1806             break;
1807         }
1808     }
1809
1810     return true;
1811 }
1812
1813 void wxWindowBase::ResetConstraints()
1814 {
1815     wxLayoutConstraints *constr = GetConstraints();
1816     if ( constr )
1817     {
1818         constr->left.SetDone(false);
1819         constr->top.SetDone(false);
1820         constr->right.SetDone(false);
1821         constr->bottom.SetDone(false);
1822         constr->width.SetDone(false);
1823         constr->height.SetDone(false);
1824         constr->centreX.SetDone(false);
1825         constr->centreY.SetDone(false);
1826     }
1827
1828     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1829     while (node)
1830     {
1831         wxWindow *win = node->GetData();
1832         if ( !win->IsTopLevel() )
1833             win->ResetConstraints();
1834         node = node->GetNext();
1835     }
1836 }
1837
1838 // Need to distinguish between setting the 'fake' size for windows and sizers,
1839 // and setting the real values.
1840 void wxWindowBase::SetConstraintSizes(bool recurse)
1841 {
1842     wxLayoutConstraints *constr = GetConstraints();
1843     if ( constr && constr->AreSatisfied() )
1844     {
1845         int x = constr->left.GetValue();
1846         int y = constr->top.GetValue();
1847         int w = constr->width.GetValue();
1848         int h = constr->height.GetValue();
1849
1850         if ( (constr->width.GetRelationship() != wxAsIs ) ||
1851              (constr->height.GetRelationship() != wxAsIs) )
1852         {
1853             SetSize(x, y, w, h);
1854         }
1855         else
1856         {
1857             // If we don't want to resize this window, just move it...
1858             Move(x, y);
1859         }
1860     }
1861     else if ( constr )
1862     {
1863         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
1864                    GetClassInfo()->GetClassName(),
1865                    GetName().c_str());
1866     }
1867
1868     if ( recurse )
1869     {
1870         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1871         while (node)
1872         {
1873             wxWindow *win = node->GetData();
1874             if ( !win->IsTopLevel() && win->GetConstraints() )
1875                 win->SetConstraintSizes();
1876             node = node->GetNext();
1877         }
1878     }
1879 }
1880
1881 // Only set the size/position of the constraint (if any)
1882 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
1883 {
1884     wxLayoutConstraints *constr = GetConstraints();
1885     if ( constr )
1886     {
1887         if ( x != wxDefaultPosition.x )
1888         {
1889             constr->left.SetValue(x);
1890             constr->left.SetDone(true);
1891         }
1892         if ( y != wxDefaultPosition.y )
1893         {
1894             constr->top.SetValue(y);
1895             constr->top.SetDone(true);
1896         }
1897         if ( w != wxDefaultSize.x )
1898         {
1899             constr->width.SetValue(w);
1900             constr->width.SetDone(true);
1901         }
1902         if ( h != wxDefaultSize.y )
1903         {
1904             constr->height.SetValue(h);
1905             constr->height.SetDone(true);
1906         }
1907     }
1908 }
1909
1910 void wxWindowBase::MoveConstraint(int x, int y)
1911 {
1912     wxLayoutConstraints *constr = GetConstraints();
1913     if ( constr )
1914     {
1915         if ( x != wxDefaultPosition.x )
1916         {
1917             constr->left.SetValue(x);
1918             constr->left.SetDone(true);
1919         }
1920         if ( y != wxDefaultPosition.y )
1921         {
1922             constr->top.SetValue(y);
1923             constr->top.SetDone(true);
1924         }
1925     }
1926 }
1927
1928 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
1929 {
1930     wxLayoutConstraints *constr = GetConstraints();
1931     if ( constr )
1932     {
1933         *w = constr->width.GetValue();
1934         *h = constr->height.GetValue();
1935     }
1936     else
1937         GetSize(w, h);
1938 }
1939
1940 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
1941 {
1942     wxLayoutConstraints *constr = GetConstraints();
1943     if ( constr )
1944     {
1945         *w = constr->width.GetValue();
1946         *h = constr->height.GetValue();
1947     }
1948     else
1949         GetClientSize(w, h);
1950 }
1951
1952 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
1953 {
1954     wxLayoutConstraints *constr = GetConstraints();
1955     if ( constr )
1956     {
1957         *x = constr->left.GetValue();
1958         *y = constr->top.GetValue();
1959     }
1960     else
1961         GetPosition(x, y);
1962 }
1963
1964 #endif // wxUSE_CONSTRAINTS
1965
1966 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
1967 {
1968     // don't do it for the dialogs/frames - they float independently of their
1969     // parent
1970     if ( !IsTopLevel() )
1971     {
1972         wxWindow *parent = GetParent();
1973         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
1974         {
1975             wxPoint pt(parent->GetClientAreaOrigin());
1976             x += pt.x;
1977             y += pt.y;
1978         }
1979     }
1980 }
1981
1982 // ----------------------------------------------------------------------------
1983 // do Update UI processing for child controls
1984 // ----------------------------------------------------------------------------
1985
1986 void wxWindowBase::UpdateWindowUI(long flags)
1987 {
1988     wxUpdateUIEvent event(GetId());
1989     event.m_eventObject = this;
1990
1991     if ( GetEventHandler()->ProcessEvent(event) )
1992     {
1993         DoUpdateWindowUI(event);
1994     }
1995
1996     if (flags & wxUPDATE_UI_RECURSE)
1997     {
1998         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1999         while (node)
2000         {
2001             wxWindow* child = (wxWindow*) node->GetData();
2002             child->UpdateWindowUI(flags);
2003             node = node->GetNext();
2004         }
2005     }
2006 }
2007
2008 // do the window-specific processing after processing the update event
2009 // TODO: take specific knowledge out of this function and
2010 // put in each control's base class. Unfortunately we don't
2011 // yet have base implementation files for wxCheckBox and wxRadioButton.
2012 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
2013 {
2014     if ( event.GetSetEnabled() )
2015         Enable(event.GetEnabled());
2016
2017 #if wxUSE_CONTROLS
2018     if ( event.GetSetText() )
2019     {
2020         wxControl *control = wxDynamicCastThis(wxControl);
2021         if ( control )
2022         {
2023             if ( event.GetText() != control->GetLabel() )
2024                 control->SetLabel(event.GetText());
2025         }
2026 #if wxUSE_CHECKBOX
2027         wxCheckBox *checkbox = wxDynamicCastThis(wxCheckBox);
2028         if ( checkbox )
2029         {
2030             if ( event.GetSetChecked() )
2031                 checkbox->SetValue(event.GetChecked());
2032         }
2033 #endif // wxUSE_CHECKBOX
2034
2035 #if wxUSE_RADIOBTN
2036         wxRadioButton *radiobtn = wxDynamicCastThis(wxRadioButton);
2037         if ( radiobtn )
2038         {
2039             if ( event.GetSetChecked() )
2040                 radiobtn->SetValue(event.GetChecked());
2041         }
2042 #endif // wxUSE_RADIOBTN
2043     }
2044 #endif
2045 }
2046
2047 #if 0
2048 // call internal idle recursively
2049 // may be obsolete (wait until OnIdle scheme stabilises)
2050 void wxWindowBase::ProcessInternalIdle()
2051 {
2052     OnInternalIdle();
2053
2054     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2055     while (node)
2056     {
2057         wxWindow *child = node->GetData();
2058         child->ProcessInternalIdle();
2059         node = node->GetNext();
2060     }
2061 }
2062 #endif
2063
2064 // ----------------------------------------------------------------------------
2065 // dialog units translations
2066 // ----------------------------------------------------------------------------
2067
2068 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
2069 {
2070     int charWidth = GetCharWidth();
2071     int charHeight = GetCharHeight();
2072     wxPoint pt2(-1, -1);
2073     if (pt.x != -1)
2074         pt2.x = (int) ((pt.x * 4) / charWidth);
2075     if (pt.y != -1)
2076         pt2.y = (int) ((pt.y * 8) / charHeight);
2077
2078     return pt2;
2079 }
2080
2081 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
2082 {
2083     int charWidth = GetCharWidth();
2084     int charHeight = GetCharHeight();
2085     wxPoint pt2(-1, -1);
2086     if (pt.x != -1)
2087         pt2.x = (int) ((pt.x * charWidth) / 4);
2088     if (pt.y != -1)
2089         pt2.y = (int) ((pt.y * charHeight) / 8);
2090
2091     return pt2;
2092 }
2093
2094 // ----------------------------------------------------------------------------
2095 // event handlers
2096 // ----------------------------------------------------------------------------
2097
2098 // propagate the colour change event to the subwindows
2099 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
2100 {
2101     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2102     while ( node )
2103     {
2104         // Only propagate to non-top-level windows
2105         wxWindow *win = node->GetData();
2106         if ( !win->IsTopLevel() )
2107         {
2108             wxSysColourChangedEvent event2;
2109             event.m_eventObject = win;
2110             win->GetEventHandler()->ProcessEvent(event2);
2111         }
2112
2113         node = node->GetNext();
2114     }
2115 }
2116
2117 // the default action is to populate dialog with data when it's created,
2118 // and nudge the UI into displaying itself correctly in case
2119 // we've turned the wxUpdateUIEvents frequency down low.
2120 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
2121 {
2122     TransferDataToWindow();
2123
2124     // Update the UI at this point
2125     UpdateWindowUI(wxUPDATE_UI_RECURSE);
2126 }
2127
2128 // process Ctrl-Alt-mclick
2129 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
2130 {
2131 #if wxUSE_MSGDLG
2132     if ( event.ControlDown() && event.AltDown() )
2133     {
2134         // don't translate these strings
2135         wxString port;
2136
2137 #ifdef __WXUNIVERSAL__
2138         port = _T("Univ/");
2139 #endif // __WXUNIVERSAL__
2140
2141         switch ( wxGetOsVersion() )
2142         {
2143             case wxMOTIF_X:     port += _T("Motif"); break;
2144             case wxMAC:
2145             case wxMAC_DARWIN:  port += _T("Mac"); break;
2146             case wxBEOS:        port += _T("BeOS"); break;
2147             case wxGTK:
2148             case wxGTK_WIN32:
2149             case wxGTK_OS2:
2150             case wxGTK_BEOS:    port += _T("GTK"); break;
2151             case wxWINDOWS:
2152             case wxPENWINDOWS:
2153             case wxWINDOWS_NT:
2154             case wxWIN32S:
2155             case wxWIN95:
2156             case wxWIN386:      port += _T("MS Windows"); break;
2157             case wxMGL_UNIX:
2158             case wxMGL_X:
2159             case wxMGL_WIN32:
2160             case wxMGL_OS2:     port += _T("MGL"); break;
2161             case wxWINDOWS_OS2:
2162             case wxOS2_PM:      port += _T("OS/2"); break;
2163             default:            port += _T("unknown"); break;
2164         }
2165
2166         wxMessageBox(wxString::Format(
2167                                       _T(
2168                                         "       wxWidgets Library (%s port)\nVersion %u.%u.%u%s, compiled at %s %s\n   Copyright (c) 1995-2002 wxWidgets team"
2169                                         ),
2170                                       port.c_str(),
2171                                       wxMAJOR_VERSION,
2172                                       wxMINOR_VERSION,
2173                                       wxRELEASE_NUMBER,
2174 #if wxUSE_UNICODE
2175                                       L" (Unicode)",
2176 #else
2177                                       "",
2178 #endif
2179                                       __TDATE__,
2180                                       __TTIME__
2181                                      ),
2182                      _T("wxWidgets information"),
2183                      wxICON_INFORMATION | wxOK,
2184                      (wxWindow *)this);
2185     }
2186     else
2187 #endif // wxUSE_MSGDLG
2188     {
2189         event.Skip();
2190     }
2191 }
2192
2193 // ----------------------------------------------------------------------------
2194 // accessibility
2195 // ----------------------------------------------------------------------------
2196
2197 #if wxUSE_ACCESSIBILITY
2198 void wxWindowBase::SetAccessible(wxAccessible* accessible)
2199 {
2200     if (m_accessible && (accessible != m_accessible))
2201         delete m_accessible;
2202     m_accessible = accessible;
2203     if (m_accessible)
2204         m_accessible->SetWindow((wxWindow*) this);
2205 }
2206
2207 // Returns the accessible object, creating if necessary.
2208 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2209 {
2210     if (!m_accessible)
2211         m_accessible = CreateAccessible();
2212     return m_accessible;
2213 }
2214
2215 // Override to create a specific accessible object.
2216 wxAccessible* wxWindowBase::CreateAccessible()
2217 {
2218     return new wxWindowAccessible((wxWindow*) this);
2219 }
2220
2221 #endif
2222
2223 #if !wxUSE_STL
2224 // ----------------------------------------------------------------------------
2225 // list classes implementation
2226 // ----------------------------------------------------------------------------
2227
2228 void wxWindowListNode::DeleteData()
2229 {
2230     delete (wxWindow *)GetData();
2231 }
2232 #endif
2233
2234 // ----------------------------------------------------------------------------
2235 // borders
2236 // ----------------------------------------------------------------------------
2237
2238 wxBorder wxWindowBase::GetBorder(long flags) const
2239 {
2240     wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2241     if ( border == wxBORDER_DEFAULT )
2242     {
2243         border = GetDefaultBorder();
2244     }
2245
2246     return border;
2247 }
2248
2249 wxBorder wxWindowBase::GetDefaultBorder() const
2250 {
2251     return wxBORDER_NONE;
2252 }
2253
2254 // ----------------------------------------------------------------------------
2255 // hit testing
2256 // ----------------------------------------------------------------------------
2257
2258 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2259 {
2260     // here we just check if the point is inside the window or not
2261
2262     // check the top and left border first
2263     bool outside = x < 0 || y < 0;
2264     if ( !outside )
2265     {
2266         // check the right and bottom borders too
2267         wxSize size = GetSize();
2268         outside = x >= size.x || y >= size.y;
2269     }
2270
2271     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2272 }
2273
2274 // ----------------------------------------------------------------------------
2275 // mouse capture
2276 // ----------------------------------------------------------------------------
2277
2278 struct WXDLLEXPORT wxWindowNext
2279 {
2280     wxWindow *win;
2281     wxWindowNext *next;
2282 } *wxWindowBase::ms_winCaptureNext = NULL;
2283
2284 void wxWindowBase::CaptureMouse()
2285 {
2286     wxLogTrace(_T("mousecapture"), _T("CaptureMouse(%p)"), this);
2287
2288     wxWindow *winOld = GetCapture();
2289     if ( winOld )
2290     {
2291         ((wxWindowBase*) winOld)->DoReleaseMouse();
2292
2293         // save it on stack
2294         wxWindowNext *item = new wxWindowNext;
2295         item->win = winOld;
2296         item->next = ms_winCaptureNext;
2297         ms_winCaptureNext = item;
2298     }
2299     //else: no mouse capture to save
2300
2301     DoCaptureMouse();
2302 }
2303
2304 void wxWindowBase::ReleaseMouse()
2305 {
2306     wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(%p)"), this);
2307
2308     wxASSERT_MSG( GetCapture() == this, wxT("attempt to release mouse, but this window hasn't captured it") );
2309
2310     DoReleaseMouse();
2311
2312     if ( ms_winCaptureNext )
2313     {
2314         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2315
2316         wxWindowNext *item = ms_winCaptureNext;
2317         ms_winCaptureNext = item->next;
2318         delete item;
2319     }
2320     //else: stack is empty, no previous capture
2321
2322     wxLogTrace(_T("mousecapture"),
2323         (const wxChar *) _T("After ReleaseMouse() mouse is captured by %p"),
2324         GetCapture());
2325 }
2326
2327 #if wxUSE_HOTKEY
2328
2329 bool
2330 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2331                              int WXUNUSED(modifiers),
2332                              int WXUNUSED(keycode))
2333 {
2334     // not implemented
2335     return false;
2336 }
2337
2338 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2339 {
2340     // not implemented
2341     return false;
2342 }
2343
2344 #endif // wxUSE_HOTKEY
2345
2346 void wxWindowBase::SendDestroyEvent()
2347 {
2348     wxWindowDestroyEvent event;
2349     event.SetEventObject(this);
2350     event.SetId(GetId());
2351     GetEventHandler()->ProcessEvent(event);
2352 }
2353
2354 // ----------------------------------------------------------------------------
2355 // event processing
2356 // ----------------------------------------------------------------------------
2357
2358 bool wxWindowBase::TryValidator(wxEvent& wxVALIDATOR_PARAM(event))
2359 {
2360 #if wxUSE_VALIDATORS
2361     // Can only use the validator of the window which
2362     // is receiving the event
2363     if ( event.GetEventObject() == this )
2364     {
2365         wxValidator *validator = GetValidator();
2366         if ( validator && validator->ProcessEvent(event) )
2367         {
2368             return true;
2369         }
2370     }
2371 #endif // wxUSE_VALIDATORS
2372
2373     return false;
2374 }
2375
2376 bool wxWindowBase::TryParent(wxEvent& event)
2377 {
2378     // carry on up the parent-child hierarchy if the propgation count hasn't
2379     // reached zero yet
2380     if ( event.ShouldPropagate() )
2381     {
2382         // honour the requests to stop propagation at this window: this is
2383         // used by the dialogs, for example, to prevent processing the events
2384         // from the dialog controls in the parent frame which rarely, if ever,
2385         // makes sense
2386         if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
2387         {
2388             wxWindow *parent = GetParent();
2389             if ( parent && !parent->IsBeingDeleted() )
2390             {
2391                 wxPropagateOnce propagateOnce(event);
2392
2393                 return parent->GetEventHandler()->ProcessEvent(event);
2394             }
2395         }
2396     }
2397
2398     return wxEvtHandler::TryParent(event);
2399 }
2400
2401 // ----------------------------------------------------------------------------
2402 // navigation
2403 // ----------------------------------------------------------------------------
2404
2405 // Navigates in the specified direction.
2406 bool wxWindowBase::Navigate(int flags)
2407 {
2408     wxNavigationKeyEvent eventNav;
2409     eventNav.SetFlags(flags);
2410     eventNav.SetEventObject(this);
2411     if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
2412     {
2413         return true;
2414     }
2415     return false;
2416 }
2417
2418 // ----------------------------------------------------------------------------
2419 // global functions
2420 // ----------------------------------------------------------------------------
2421
2422 wxWindow* wxGetTopLevelParent(wxWindow *win)
2423 {
2424     while ( win && !win->IsTopLevel() )
2425          win = win->GetParent();
2426
2427     return win;
2428 }
2429
2430 #if wxUSE_ACCESSIBILITY
2431 // ----------------------------------------------------------------------------
2432 // accessible object for windows
2433 // ----------------------------------------------------------------------------
2434
2435 // Can return either a child object, or an integer
2436 // representing the child element, starting from 1.
2437 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
2438 {
2439     wxASSERT( GetWindow() != NULL );
2440     if (!GetWindow())
2441         return wxACC_FAIL;
2442
2443     return wxACC_NOT_IMPLEMENTED;
2444 }
2445
2446 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
2447 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
2448 {
2449     wxASSERT( GetWindow() != NULL );
2450     if (!GetWindow())
2451         return wxACC_FAIL;
2452
2453     wxWindow* win = NULL;
2454     if (elementId == 0)
2455     {
2456         win = GetWindow();
2457     }
2458     else
2459     {
2460         if (elementId <= (int) GetWindow()->GetChildren().GetCount())
2461         {
2462             win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
2463         }
2464         else
2465             return wxACC_FAIL;
2466     }
2467     if (win)
2468     {
2469         rect = win->GetRect();
2470         if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
2471             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
2472         return wxACC_OK;
2473     }
2474
2475     return wxACC_NOT_IMPLEMENTED;
2476 }
2477
2478 // Navigates from fromId to toId/toObject.
2479 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
2480                              int* WXUNUSED(toId), wxAccessible** toObject)
2481 {
2482     wxASSERT( GetWindow() != NULL );
2483     if (!GetWindow())
2484         return wxACC_FAIL;
2485
2486     switch (navDir)
2487     {
2488     case wxNAVDIR_FIRSTCHILD:
2489         {
2490             if (GetWindow()->GetChildren().GetCount() == 0)
2491                 return wxACC_FALSE;
2492             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
2493             *toObject = childWindow->GetOrCreateAccessible();
2494
2495             return wxACC_OK;
2496         }
2497     case wxNAVDIR_LASTCHILD:
2498         {
2499             if (GetWindow()->GetChildren().GetCount() == 0)
2500                 return wxACC_FALSE;
2501             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
2502             *toObject = childWindow->GetOrCreateAccessible();
2503
2504             return wxACC_OK;
2505         }
2506     case wxNAVDIR_RIGHT:
2507     case wxNAVDIR_DOWN:
2508     case wxNAVDIR_NEXT:
2509         {
2510             wxWindowList::compatibility_iterator node =
2511                 wxWindowList::compatibility_iterator();
2512             if (fromId == 0)
2513             {
2514                 // Can't navigate to sibling of this window
2515                 // if we're a top-level window.
2516                 if (!GetWindow()->GetParent())
2517                     return wxACC_NOT_IMPLEMENTED;
2518
2519                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2520             }
2521             else
2522             {
2523                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2524                     node = GetWindow()->GetChildren().Item(fromId-1);
2525             }
2526
2527             if (node && node->GetNext())
2528             {
2529                 wxWindow* nextWindow = node->GetNext()->GetData();
2530                 *toObject = nextWindow->GetOrCreateAccessible();
2531                 return wxACC_OK;
2532             }
2533             else
2534                 return wxACC_FALSE;
2535         }
2536     case wxNAVDIR_LEFT:
2537     case wxNAVDIR_UP:
2538     case wxNAVDIR_PREVIOUS:
2539         {
2540             wxWindowList::compatibility_iterator node =
2541                 wxWindowList::compatibility_iterator();
2542             if (fromId == 0)
2543             {
2544                 // Can't navigate to sibling of this window
2545                 // if we're a top-level window.
2546                 if (!GetWindow()->GetParent())
2547                     return wxACC_NOT_IMPLEMENTED;
2548
2549                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2550             }
2551             else
2552             {
2553                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2554                     node = GetWindow()->GetChildren().Item(fromId-1);
2555             }
2556
2557             if (node && node->GetPrevious())
2558             {
2559                 wxWindow* previousWindow = node->GetPrevious()->GetData();
2560                 *toObject = previousWindow->GetOrCreateAccessible();
2561                 return wxACC_OK;
2562             }
2563             else
2564                 return wxACC_FALSE;
2565         }
2566     }
2567
2568     return wxACC_NOT_IMPLEMENTED;
2569 }
2570
2571 // Gets the name of the specified object.
2572 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
2573 {
2574     wxASSERT( GetWindow() != NULL );
2575     if (!GetWindow())
2576         return wxACC_FAIL;
2577
2578     wxString title;
2579
2580     // If a child, leave wxWidgets to call the function on the actual
2581     // child object.
2582     if (childId > 0)
2583         return wxACC_NOT_IMPLEMENTED;
2584
2585     // This will eventually be replaced by specialised
2586     // accessible classes, one for each kind of wxWidgets
2587     // control or window.
2588 #if wxUSE_BUTTON
2589     if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
2590         title = ((wxButton*) GetWindow())->GetLabel();
2591     else
2592 #endif
2593         title = GetWindow()->GetName();
2594
2595     if (!title.IsEmpty())
2596     {
2597         *name = title;
2598         return wxACC_OK;
2599     }
2600     else
2601         return wxACC_NOT_IMPLEMENTED;
2602 }
2603
2604 // Gets the number of children.
2605 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
2606 {
2607     wxASSERT( GetWindow() != NULL );
2608     if (!GetWindow())
2609         return wxACC_FAIL;
2610
2611     *childId = (int) GetWindow()->GetChildren().GetCount();
2612     return wxACC_OK;
2613 }
2614
2615 // Gets the specified child (starting from 1).
2616 // If *child is NULL and return value is wxACC_OK,
2617 // this means that the child is a simple element and
2618 // not an accessible object.
2619 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
2620 {
2621     wxASSERT( GetWindow() != NULL );
2622     if (!GetWindow())
2623         return wxACC_FAIL;
2624
2625     if (childId == 0)
2626     {
2627         *child = this;
2628         return wxACC_OK;
2629     }
2630
2631     if (childId > (int) GetWindow()->GetChildren().GetCount())
2632         return wxACC_FAIL;
2633
2634     wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
2635     *child = childWindow->GetOrCreateAccessible();
2636     if (*child)
2637         return wxACC_OK;
2638     else
2639         return wxACC_FAIL;
2640 }
2641
2642 // Gets the parent, or NULL.
2643 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
2644 {
2645     wxASSERT( GetWindow() != NULL );
2646     if (!GetWindow())
2647         return wxACC_FAIL;
2648
2649     wxWindow* parentWindow = GetWindow()->GetParent();
2650     if (!parentWindow)
2651     {
2652         *parent = NULL;
2653         return wxACC_OK;
2654     }
2655     else
2656     {
2657         *parent = parentWindow->GetOrCreateAccessible();
2658         if (*parent)
2659             return wxACC_OK;
2660         else
2661             return wxACC_FAIL;
2662     }
2663 }
2664
2665 // Performs the default action. childId is 0 (the action for this object)
2666 // or > 0 (the action for a child).
2667 // Return wxACC_NOT_SUPPORTED if there is no default action for this
2668 // window (e.g. an edit control).
2669 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
2670 {
2671     wxASSERT( GetWindow() != NULL );
2672     if (!GetWindow())
2673         return wxACC_FAIL;
2674
2675     return wxACC_NOT_IMPLEMENTED;
2676 }
2677
2678 // Gets the default action for this object (0) or > 0 (the action for a child).
2679 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
2680 // string if there is no action.
2681 // The retrieved string describes the action that is performed on an object,
2682 // not what the object does as a result. For example, a toolbar button that prints
2683 // a document has a default action of "Press" rather than "Prints the current document."
2684 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
2685 {
2686     wxASSERT( GetWindow() != NULL );
2687     if (!GetWindow())
2688         return wxACC_FAIL;
2689
2690     return wxACC_NOT_IMPLEMENTED;
2691 }
2692
2693 // Returns the description for this object or a child.
2694 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
2695 {
2696     wxASSERT( GetWindow() != NULL );
2697     if (!GetWindow())
2698         return wxACC_FAIL;
2699
2700     wxString ht(GetWindow()->GetHelpText());
2701     if (!ht.IsEmpty())
2702     {
2703         *description = ht;
2704         return wxACC_OK;
2705     }
2706     return wxACC_NOT_IMPLEMENTED;
2707 }
2708
2709 // Returns help text for this object or a child, similar to tooltip text.
2710 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
2711 {
2712     wxASSERT( GetWindow() != NULL );
2713     if (!GetWindow())
2714         return wxACC_FAIL;
2715
2716     wxString ht(GetWindow()->GetHelpText());
2717     if (!ht.IsEmpty())
2718     {
2719         *helpText = ht;
2720         return wxACC_OK;
2721     }
2722     return wxACC_NOT_IMPLEMENTED;
2723 }
2724
2725 // Returns the keyboard shortcut for this object or child.
2726 // Return e.g. ALT+K
2727 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
2728 {
2729     wxASSERT( GetWindow() != NULL );
2730     if (!GetWindow())
2731         return wxACC_FAIL;
2732
2733     return wxACC_NOT_IMPLEMENTED;
2734 }
2735
2736 // Returns a role constant.
2737 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
2738 {
2739     wxASSERT( GetWindow() != NULL );
2740     if (!GetWindow())
2741         return wxACC_FAIL;
2742
2743     // If a child, leave wxWidgets to call the function on the actual
2744     // child object.
2745     if (childId > 0)
2746         return wxACC_NOT_IMPLEMENTED;
2747
2748     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2749         return wxACC_NOT_IMPLEMENTED;
2750 #if wxUSE_STATUSBAR
2751     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2752         return wxACC_NOT_IMPLEMENTED;
2753 #endif
2754 #if wxUSE_TOOLBAR
2755     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2756         return wxACC_NOT_IMPLEMENTED;
2757 #endif
2758
2759     //*role = wxROLE_SYSTEM_CLIENT;
2760     *role = wxROLE_SYSTEM_CLIENT;
2761     return wxACC_OK;
2762
2763     #if 0
2764     return wxACC_NOT_IMPLEMENTED;
2765     #endif
2766 }
2767
2768 // Returns a state constant.
2769 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
2770 {
2771     wxASSERT( GetWindow() != NULL );
2772     if (!GetWindow())
2773         return wxACC_FAIL;
2774
2775     // If a child, leave wxWidgets to call the function on the actual
2776     // child object.
2777     if (childId > 0)
2778         return wxACC_NOT_IMPLEMENTED;
2779
2780     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2781         return wxACC_NOT_IMPLEMENTED;
2782
2783 #if wxUSE_STATUSBAR
2784     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2785         return wxACC_NOT_IMPLEMENTED;
2786 #endif
2787 #if wxUSE_TOOLBAR
2788     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2789         return wxACC_NOT_IMPLEMENTED;
2790 #endif
2791
2792     *state = 0;
2793     return wxACC_OK;
2794
2795     #if 0
2796     return wxACC_NOT_IMPLEMENTED;
2797     #endif
2798 }
2799
2800 // Returns a localized string representing the value for the object
2801 // or child.
2802 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
2803 {
2804     wxASSERT( GetWindow() != NULL );
2805     if (!GetWindow())
2806         return wxACC_FAIL;
2807
2808     return wxACC_NOT_IMPLEMENTED;
2809 }
2810
2811 // Selects the object or child.
2812 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
2813 {
2814     wxASSERT( GetWindow() != NULL );
2815     if (!GetWindow())
2816         return wxACC_FAIL;
2817
2818     return wxACC_NOT_IMPLEMENTED;
2819 }
2820
2821 // Gets the window with the keyboard focus.
2822 // If childId is 0 and child is NULL, no object in
2823 // this subhierarchy has the focus.
2824 // If this object has the focus, child should be 'this'.
2825 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
2826 {
2827     wxASSERT( GetWindow() != NULL );
2828     if (!GetWindow())
2829         return wxACC_FAIL;
2830
2831     return wxACC_NOT_IMPLEMENTED;
2832 }
2833
2834 // Gets a variant representing the selected children
2835 // of this object.
2836 // Acceptable values:
2837 // - a null variant (IsNull() returns TRUE)
2838 // - a list variant (GetType() == wxT("list")
2839 // - an integer representing the selected child element,
2840 //   or 0 if this object is selected (GetType() == wxT("long")
2841 // - a "void*" pointer to a wxAccessible child object
2842 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
2843 {
2844     wxASSERT( GetWindow() != NULL );
2845     if (!GetWindow())
2846         return wxACC_FAIL;
2847
2848     return wxACC_NOT_IMPLEMENTED;
2849 }
2850
2851 #endif // wxUSE_ACCESSIBILITY