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::SetBestFittingSize(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         return colBg;
 984     }
 985     else
 986         return m_backgroundColour;
 987 }
 988
 989 wxColour wxWindowBase::GetForegroundColour() const
 990 {
 991     // logic is the same as above
 992     if ( !m_hasFgCol && !m_foregroundColour.Ok() )
 993     {
 994         wxASSERT_MSG( !m_hasFgCol, _T("we have invalid explicit fg colour?") );
 995
 996         wxColour colFg = GetDefaultAttributes().colFg;
 997
 998         if ( !colFg.Ok() )
 999             colFg = GetClassDefaultAttributes().colFg;
1000
1001         return colFg;
1002     }
1003     else
1004         return m_foregroundColour;
1005 }
1006
1007 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
1008 {
1009     if ( colour == m_backgroundColour )
1010         return false;
1011
1012     m_hasBgCol = colour.Ok();
1013     m_backgroundColour = colour;
1014     SetThemeEnabled( !m_hasBgCol && !m_foregroundColour.Ok() );
1015     return true;
1016 }
1017
1018 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
1019 {
1020     if (colour == m_foregroundColour )
1021         return false;
1022
1023     m_hasFgCol = colour.Ok();
1024     m_foregroundColour = colour;
1025     SetThemeEnabled( !m_hasFgCol && !m_backgroundColour.Ok() );
1026     return true;
1027 }
1028
1029 bool wxWindowBase::SetCursor(const wxCursor& cursor)
1030 {
1031     // setting an invalid cursor is ok, it means that we don't have any special
1032     // cursor
1033     if ( m_cursor == cursor )
1034     {
1035         // no change
1036         return false;
1037     }
1038
1039     m_cursor = cursor;
1040
1041     return true;
1042 }
1043
1044 wxFont wxWindowBase::GetFont() const
1045 {
1046     // logic is the same as in GetBackgroundColour()
1047     if ( !m_font.Ok() )
1048     {
1049         wxASSERT_MSG( !m_hasFont, _T("we have invalid explicit font?") );
1050
1051         wxFont font = GetDefaultAttributes().font;
1052         if ( !font.Ok() )
1053             font = GetClassDefaultAttributes().font;
1054
1055         return font;
1056     }
1057     else
1058         return m_font;
1059 }
1060
1061 bool wxWindowBase::SetFont(const wxFont& font)
1062 {
1063     if ( font == m_font )
1064     {
1065         // no change
1066         return false;
1067     }
1068
1069     m_font = font;
1070     m_hasFont = font.Ok();
1071
1072     return true;
1073 }
1074
1075 #if wxUSE_PALETTE
1076
1077 void wxWindowBase::SetPalette(const wxPalette& pal)
1078 {
1079     m_hasCustomPalette = true;
1080     m_palette = pal;
1081
1082     // VZ: can anyone explain me what do we do here?
1083     wxWindowDC d((wxWindow *) this);
1084     d.SetPalette(pal);
1085 }
1086
1087 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
1088 {
1089     wxWindow *win = (wxWindow *)this;
1090     while ( win && !win->HasCustomPalette() )
1091     {
1092         win = win->GetParent();
1093     }
1094
1095     return win;
1096 }
1097
1098 #endif // wxUSE_PALETTE
1099
1100 #if wxUSE_CARET
1101 void wxWindowBase::SetCaret(wxCaret *caret)
1102 {
1103     if ( m_caret )
1104     {
1105         delete m_caret;
1106     }
1107
1108     m_caret = caret;
1109
1110     if ( m_caret )
1111     {
1112         wxASSERT_MSG( m_caret->GetWindow() == this,
1113                       wxT("caret should be created associated to this window") );
1114     }
1115 }
1116 #endif // wxUSE_CARET
1117
1118 #if wxUSE_VALIDATORS
1119 // ----------------------------------------------------------------------------
1120 // validators
1121 // ----------------------------------------------------------------------------
1122
1123 void wxWindowBase::SetValidator(const wxValidator& validator)
1124 {
1125     if ( m_windowValidator )
1126         delete m_windowValidator;
1127
1128     m_windowValidator = (wxValidator *)validator.Clone();
1129
1130     if ( m_windowValidator )
1131         m_windowValidator->SetWindow(this);
1132 }
1133 #endif // wxUSE_VALIDATORS
1134
1135 // ----------------------------------------------------------------------------
1136 // update region stuff
1137 // ----------------------------------------------------------------------------
1138
1139 wxRect wxWindowBase::GetUpdateClientRect() const
1140 {
1141     wxRegion rgnUpdate = GetUpdateRegion();
1142     rgnUpdate.Intersect(GetClientRect());
1143     wxRect rectUpdate = rgnUpdate.GetBox();
1144     wxPoint ptOrigin = GetClientAreaOrigin();
1145     rectUpdate.x -= ptOrigin.x;
1146     rectUpdate.y -= ptOrigin.y;
1147
1148     return rectUpdate;
1149 }
1150
1151 bool wxWindowBase::IsExposed(int x, int y) const
1152 {
1153     return m_updateRegion.Contains(x, y) != wxOutRegion;
1154 }
1155
1156 bool wxWindowBase::IsExposed(int x, int y, int w, int h) const
1157 {
1158     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
1159 }
1160
1161 void wxWindowBase::ClearBackground()
1162 {
1163     // wxGTK uses its own version, no need to add never used code
1164 #ifndef __WXGTK__
1165     wxClientDC dc((wxWindow *)this);
1166     wxBrush brush(GetBackgroundColour(), wxSOLID);
1167     dc.SetBackground(brush);
1168     dc.Clear();
1169 #endif // __WXGTK__
1170 }
1171
1172 // ----------------------------------------------------------------------------
1173 // find child window by id or name
1174 // ----------------------------------------------------------------------------
1175
1176 wxWindow *wxWindowBase::FindWindow( long id )
1177 {
1178     if ( id == m_windowId )
1179         return (wxWindow *)this;
1180
1181     wxWindowBase *res = (wxWindow *)NULL;
1182     wxWindowList::compatibility_iterator node;
1183     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1184     {
1185         wxWindowBase *child = node->GetData();
1186         res = child->FindWindow( id );
1187     }
1188
1189     return (wxWindow *)res;
1190 }
1191
1192 wxWindow *wxWindowBase::FindWindow( const wxString& name )
1193 {
1194     if ( name == m_windowName )
1195         return (wxWindow *)this;
1196
1197     wxWindowBase *res = (wxWindow *)NULL;
1198     wxWindowList::compatibility_iterator node;
1199     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1200     {
1201         wxWindow *child = node->GetData();
1202         res = child->FindWindow(name);
1203     }
1204
1205     return (wxWindow *)res;
1206 }
1207
1208
1209 // find any window by id or name or label: If parent is non-NULL, look through
1210 // children for a label or title matching the specified string. If NULL, look
1211 // through all top-level windows.
1212 //
1213 // to avoid duplicating code we reuse the same helper function but with
1214 // different comparators
1215
1216 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1217                                 const wxString& label, long id);
1218
1219 static
1220 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1221                            long WXUNUSED(id))
1222 {
1223     return win->GetLabel() == label;
1224 }
1225
1226 static
1227 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1228                           long WXUNUSED(id))
1229 {
1230     return win->GetName() == label;
1231 }
1232
1233 static
1234 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1235                         long id)
1236 {
1237     return win->GetId() == id;
1238 }
1239
1240 // recursive helper for the FindWindowByXXX() functions
1241 static
1242 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1243                                   const wxString& label,
1244                                   long id,
1245                                   wxFindWindowCmp cmp)
1246 {
1247     if ( parent )
1248     {
1249         // see if this is the one we're looking for
1250         if ( (*cmp)(parent, label, id) )
1251             return (wxWindow *)parent;
1252
1253         // It wasn't, so check all its children
1254         for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
1255               node;
1256               node = node->GetNext() )
1257         {
1258             // recursively check each child
1259             wxWindow *win = (wxWindow *)node->GetData();
1260             wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1261             if (retwin)
1262                 return retwin;
1263         }
1264     }
1265
1266     // Not found
1267     return NULL;
1268 }
1269
1270 // helper for FindWindowByXXX()
1271 static
1272 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1273                              const wxString& label,
1274                              long id,
1275                              wxFindWindowCmp cmp)
1276 {
1277     if ( parent )
1278     {
1279         // just check parent and all its children
1280         return wxFindWindowRecursively(parent, label, id, cmp);
1281     }
1282
1283     // start at very top of wx's windows
1284     for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1285           node;
1286           node = node->GetNext() )
1287     {
1288         // recursively check each window & its children
1289         wxWindow *win = node->GetData();
1290         wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1291         if (retwin)
1292             return retwin;
1293     }
1294
1295     return NULL;
1296 }
1297
1298 /* static */
1299 wxWindow *
1300 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1301 {
1302     return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1303 }
1304
1305 /* static */
1306 wxWindow *
1307 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1308 {
1309     wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1310
1311     if ( !win )
1312     {
1313         // fall back to the label
1314         win = FindWindowByLabel(title, parent);
1315     }
1316
1317     return win;
1318 }
1319
1320 /* static */
1321 wxWindow *
1322 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1323 {
1324     return wxFindWindowHelper(parent, _T(""), id, wxFindWindowCmpIds);
1325 }
1326
1327 // ----------------------------------------------------------------------------
1328 // dialog oriented functions
1329 // ----------------------------------------------------------------------------
1330
1331 void wxWindowBase::MakeModal(bool modal)
1332 {
1333     // Disable all other windows
1334     if ( IsTopLevel() )
1335     {
1336         wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1337         while (node)
1338         {
1339             wxWindow *win = node->GetData();
1340             if (win != this)
1341                 win->Enable(!modal);
1342
1343             node = node->GetNext();
1344         }
1345     }
1346 }
1347
1348 bool wxWindowBase::Validate()
1349 {
1350 #if wxUSE_VALIDATORS
1351     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1352
1353     wxWindowList::compatibility_iterator node;
1354     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1355     {
1356         wxWindowBase *child = node->GetData();
1357         wxValidator *validator = child->GetValidator();
1358         if ( validator && !validator->Validate((wxWindow *)this) )
1359         {
1360             return false;
1361         }
1362
1363         if ( recurse && !child->Validate() )
1364         {
1365             return false;
1366         }
1367     }
1368 #endif // wxUSE_VALIDATORS
1369
1370     return true;
1371 }
1372
1373 bool wxWindowBase::TransferDataToWindow()
1374 {
1375 #if wxUSE_VALIDATORS
1376     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1377
1378     wxWindowList::compatibility_iterator node;
1379     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1380     {
1381         wxWindowBase *child = node->GetData();
1382         wxValidator *validator = child->GetValidator();
1383         if ( validator && !validator->TransferToWindow() )
1384         {
1385             wxLogWarning(_("Could not transfer data to window"));
1386 #if wxUSE_LOG
1387             wxLog::FlushActive();
1388 #endif // wxUSE_LOG
1389
1390             return false;
1391         }
1392
1393         if ( recurse )
1394         {
1395             if ( !child->TransferDataToWindow() )
1396             {
1397                 // warning already given
1398                 return false;
1399             }
1400         }
1401     }
1402 #endif // wxUSE_VALIDATORS
1403
1404     return true;
1405 }
1406
1407 bool wxWindowBase::TransferDataFromWindow()
1408 {
1409 #if wxUSE_VALIDATORS
1410     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1411
1412     wxWindowList::compatibility_iterator node;
1413     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1414     {
1415         wxWindow *child = node->GetData();
1416         wxValidator *validator = child->GetValidator();
1417         if ( validator && !validator->TransferFromWindow() )
1418         {
1419             // nop warning here because the application is supposed to give
1420             // one itself - we don't know here what might have gone wrongly
1421
1422             return false;
1423         }
1424
1425         if ( recurse )
1426         {
1427             if ( !child->TransferDataFromWindow() )
1428             {
1429                 // warning already given
1430                 return false;
1431             }
1432         }
1433     }
1434 #endif // wxUSE_VALIDATORS
1435
1436     return true;
1437 }
1438
1439 void wxWindowBase::InitDialog()
1440 {
1441     wxInitDialogEvent event(GetId());
1442     event.SetEventObject( this );
1443     GetEventHandler()->ProcessEvent(event);
1444 }
1445
1446 // ----------------------------------------------------------------------------
1447 // context-sensitive help support
1448 // ----------------------------------------------------------------------------
1449
1450 #if wxUSE_HELP
1451
1452 // associate this help text with this window
1453 void wxWindowBase::SetHelpText(const wxString& text)
1454 {
1455     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1456     if ( helpProvider )
1457     {
1458         helpProvider->AddHelp(this, text);
1459     }
1460 }
1461
1462 // associate this help text with all windows with the same id as this
1463 // one
1464 void wxWindowBase::SetHelpTextForId(const wxString& text)
1465 {
1466     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1467     if ( helpProvider )
1468     {
1469         helpProvider->AddHelp(GetId(), text);
1470     }
1471 }
1472
1473 // get the help string associated with this window (may be empty)
1474 wxString wxWindowBase::GetHelpText() const
1475 {
1476     wxString text;
1477     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1478     if ( helpProvider )
1479     {
1480         text = helpProvider->GetHelp(this);
1481     }
1482
1483     return text;
1484 }
1485
1486 // show help for this window
1487 void wxWindowBase::OnHelp(wxHelpEvent& event)
1488 {
1489     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1490     if ( helpProvider )
1491     {
1492         if ( helpProvider->ShowHelp(this) )
1493         {
1494             // skip the event.Skip() below
1495             return;
1496         }
1497     }
1498
1499     event.Skip();
1500 }
1501
1502 #endif // wxUSE_HELP
1503
1504 // ----------------------------------------------------------------------------
1505 // tooltipsroot.Replace("\\", "/");
1506 // ----------------------------------------------------------------------------
1507
1508 #if wxUSE_TOOLTIPS
1509
1510 void wxWindowBase::SetToolTip( const wxString &tip )
1511 {
1512     // don't create the new tooltip if we already have one
1513     if ( m_tooltip )
1514     {
1515         m_tooltip->SetTip( tip );
1516     }
1517     else
1518     {
1519         SetToolTip( new wxToolTip( tip ) );
1520     }
1521
1522     // setting empty tooltip text does not remove the tooltip any more - use
1523     // SetToolTip((wxToolTip *)NULL) for this
1524 }
1525
1526 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1527 {
1528     if ( m_tooltip )
1529         delete m_tooltip;
1530
1531     m_tooltip = tooltip;
1532 }
1533
1534 #endif // wxUSE_TOOLTIPS
1535
1536 // ----------------------------------------------------------------------------
1537 // constraints and sizers
1538 // ----------------------------------------------------------------------------
1539
1540 #if wxUSE_CONSTRAINTS
1541
1542 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1543 {
1544     if ( m_constraints )
1545     {
1546         UnsetConstraints(m_constraints);
1547         delete m_constraints;
1548     }
1549     m_constraints = constraints;
1550     if ( m_constraints )
1551     {
1552         // Make sure other windows know they're part of a 'meaningful relationship'
1553         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1554             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1555         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1556             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1557         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1558             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1559         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1560             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1561         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1562             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1563         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1564             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1565         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1566             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1567         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1568             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1569     }
1570 }
1571
1572 // This removes any dangling pointers to this window in other windows'
1573 // constraintsInvolvedIn lists.
1574 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1575 {
1576     if ( c )
1577     {
1578         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1579             c->left.GetOtherWindow()->RemoveConstraintReference(this);
1580         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1581             c->top.GetOtherWindow()->RemoveConstraintReference(this);
1582         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1583             c->right.GetOtherWindow()->RemoveConstraintReference(this);
1584         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1585             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1586         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1587             c->width.GetOtherWindow()->RemoveConstraintReference(this);
1588         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1589             c->height.GetOtherWindow()->RemoveConstraintReference(this);
1590         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1591             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
1592         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
1593             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
1594     }
1595 }
1596
1597 // Back-pointer to other windows we're involved with, so if we delete this
1598 // window, we must delete any constraints we're involved with.
1599 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
1600 {
1601     if ( !m_constraintsInvolvedIn )
1602         m_constraintsInvolvedIn = new wxWindowList;
1603     if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
1604         m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
1605 }
1606
1607 // REMOVE back-pointer to other windows we're involved with.
1608 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
1609 {
1610     if ( m_constraintsInvolvedIn )
1611         m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
1612 }
1613
1614 // Reset any constraints that mention this window
1615 void wxWindowBase::DeleteRelatedConstraints()
1616 {
1617     if ( m_constraintsInvolvedIn )
1618     {
1619         wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
1620         while (node)
1621         {
1622             wxWindow *win = node->GetData();
1623             wxLayoutConstraints *constr = win->GetConstraints();
1624
1625             // Reset any constraints involving this window
1626             if ( constr )
1627             {
1628                 constr->left.ResetIfWin(this);
1629                 constr->top.ResetIfWin(this);
1630                 constr->right.ResetIfWin(this);
1631                 constr->bottom.ResetIfWin(this);
1632                 constr->width.ResetIfWin(this);
1633                 constr->height.ResetIfWin(this);
1634                 constr->centreX.ResetIfWin(this);
1635                 constr->centreY.ResetIfWin(this);
1636             }
1637
1638             wxWindowList::compatibility_iterator next = node->GetNext();
1639             m_constraintsInvolvedIn->Erase(node);
1640             node = next;
1641         }
1642
1643         delete m_constraintsInvolvedIn;
1644         m_constraintsInvolvedIn = (wxWindowList *) NULL;
1645     }
1646 }
1647
1648 #endif // wxUSE_CONSTRAINTS
1649
1650 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
1651 {
1652     if ( sizer == m_windowSizer)
1653         return;
1654
1655     if ( deleteOld )
1656         delete m_windowSizer;
1657
1658     m_windowSizer = sizer;
1659
1660     SetAutoLayout( sizer != NULL );
1661 }
1662
1663 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
1664 {
1665     SetSizer( sizer, deleteOld );
1666     sizer->SetSizeHints( (wxWindow*) this );
1667 }
1668
1669
1670 void wxWindowBase::SetContainingSizer(wxSizer* sizer)
1671 {
1672     // adding a window to a sizer twice is going to result in fatal and
1673     // hard to debug problems later because when deleting the second
1674     // associated wxSizerItem we're going to dereference a dangling
1675     // pointer; so try to detect this as early as possible
1676     wxASSERT_MSG( !sizer || m_containingSizer != sizer,
1677                   _T("Adding a window to the same sizer twice?") );
1678
1679     m_containingSizer = sizer;
1680 }
1681
1682 #if wxUSE_CONSTRAINTS
1683
1684 void wxWindowBase::SatisfyConstraints()
1685 {
1686     wxLayoutConstraints *constr = GetConstraints();
1687     bool wasOk = constr && constr->AreSatisfied();
1688
1689     ResetConstraints();   // Mark all constraints as unevaluated
1690
1691     int noChanges = 1;
1692
1693     // if we're a top level panel (i.e. our parent is frame/dialog), our
1694     // own constraints will never be satisfied any more unless we do it
1695     // here
1696     if ( wasOk )
1697     {
1698         while ( noChanges > 0 )
1699         {
1700             LayoutPhase1(&noChanges);
1701         }
1702     }
1703
1704     LayoutPhase2(&noChanges);
1705 }
1706
1707 #endif // wxUSE_CONSTRAINTS
1708
1709 bool wxWindowBase::Layout()
1710 {
1711     // If there is a sizer, use it instead of the constraints
1712     if ( GetSizer() )
1713     {
1714         int w, h;
1715         GetVirtualSize(&w, &h);
1716         GetSizer()->SetDimension( 0, 0, w, h );
1717     }
1718 #if wxUSE_CONSTRAINTS
1719     else
1720     {
1721         SatisfyConstraints(); // Find the right constraints values
1722         SetConstraintSizes(); // Recursively set the real window sizes
1723     }
1724 #endif
1725
1726     return true;
1727 }
1728
1729 #if wxUSE_CONSTRAINTS
1730
1731 // first phase of the constraints evaluation: set our own constraints
1732 bool wxWindowBase::LayoutPhase1(int *noChanges)
1733 {
1734     wxLayoutConstraints *constr = GetConstraints();
1735
1736     return !constr || constr->SatisfyConstraints(this, noChanges);
1737 }
1738
1739 // second phase: set the constraints for our children
1740 bool wxWindowBase::LayoutPhase2(int *noChanges)
1741 {
1742     *noChanges = 0;
1743
1744     // Layout children
1745     DoPhase(1);
1746
1747     // Layout grand children
1748     DoPhase(2);
1749
1750     return true;
1751 }
1752
1753 // Do a phase of evaluating child constraints
1754 bool wxWindowBase::DoPhase(int phase)
1755 {
1756     // the list containing the children for which the constraints are already
1757     // set correctly
1758     wxWindowList succeeded;
1759
1760     // the max number of iterations we loop before concluding that we can't set
1761     // the constraints
1762     static const int maxIterations = 500;
1763
1764     for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
1765     {
1766         int noChanges = 0;
1767
1768         // loop over all children setting their constraints
1769         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1770               node;
1771               node = node->GetNext() )
1772         {
1773             wxWindow *child = node->GetData();
1774             if ( child->IsTopLevel() )
1775             {
1776                 // top level children are not inside our client area
1777                 continue;
1778             }
1779
1780             if ( !child->GetConstraints() || succeeded.Find(child) )
1781             {
1782                 // this one is either already ok or nothing we can do about it
1783                 continue;
1784             }
1785
1786             int tempNoChanges = 0;
1787             bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
1788                                       : child->LayoutPhase2(&tempNoChanges);
1789             noChanges += tempNoChanges;
1790
1791             if ( success )
1792             {
1793                 succeeded.Append(child);
1794             }
1795         }
1796
1797         if ( !noChanges )
1798         {
1799             // constraints are set
1800             break;
1801         }
1802     }
1803
1804     return true;
1805 }
1806
1807 void wxWindowBase::ResetConstraints()
1808 {
1809     wxLayoutConstraints *constr = GetConstraints();
1810     if ( constr )
1811     {
1812         constr->left.SetDone(false);
1813         constr->top.SetDone(false);
1814         constr->right.SetDone(false);
1815         constr->bottom.SetDone(false);
1816         constr->width.SetDone(false);
1817         constr->height.SetDone(false);
1818         constr->centreX.SetDone(false);
1819         constr->centreY.SetDone(false);
1820     }
1821
1822     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1823     while (node)
1824     {
1825         wxWindow *win = node->GetData();
1826         if ( !win->IsTopLevel() )
1827             win->ResetConstraints();
1828         node = node->GetNext();
1829     }
1830 }
1831
1832 // Need to distinguish between setting the 'fake' size for windows and sizers,
1833 // and setting the real values.
1834 void wxWindowBase::SetConstraintSizes(bool recurse)
1835 {
1836     wxLayoutConstraints *constr = GetConstraints();
1837     if ( constr && constr->AreSatisfied() )
1838     {
1839         int x = constr->left.GetValue();
1840         int y = constr->top.GetValue();
1841         int w = constr->width.GetValue();
1842         int h = constr->height.GetValue();
1843
1844         if ( (constr->width.GetRelationship() != wxAsIs ) ||
1845              (constr->height.GetRelationship() != wxAsIs) )
1846         {
1847             SetSize(x, y, w, h);
1848         }
1849         else
1850         {
1851             // If we don't want to resize this window, just move it...
1852             Move(x, y);
1853         }
1854     }
1855     else if ( constr )
1856     {
1857         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
1858                    GetClassInfo()->GetClassName(),
1859                    GetName().c_str());
1860     }
1861
1862     if ( recurse )
1863     {
1864         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1865         while (node)
1866         {
1867             wxWindow *win = node->GetData();
1868             if ( !win->IsTopLevel() && win->GetConstraints() )
1869                 win->SetConstraintSizes();
1870             node = node->GetNext();
1871         }
1872     }
1873 }
1874
1875 // Only set the size/position of the constraint (if any)
1876 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
1877 {
1878     wxLayoutConstraints *constr = GetConstraints();
1879     if ( constr )
1880     {
1881         if ( x != wxDefaultPosition.x )
1882         {
1883             constr->left.SetValue(x);
1884             constr->left.SetDone(true);
1885         }
1886         if ( y != wxDefaultPosition.y )
1887         {
1888             constr->top.SetValue(y);
1889             constr->top.SetDone(true);
1890         }
1891         if ( w != wxDefaultSize.x )
1892         {
1893             constr->width.SetValue(w);
1894             constr->width.SetDone(true);
1895         }
1896         if ( h != wxDefaultSize.y )
1897         {
1898             constr->height.SetValue(h);
1899             constr->height.SetDone(true);
1900         }
1901     }
1902 }
1903
1904 void wxWindowBase::MoveConstraint(int x, int y)
1905 {
1906     wxLayoutConstraints *constr = GetConstraints();
1907     if ( constr )
1908     {
1909         if ( x != wxDefaultPosition.x )
1910         {
1911             constr->left.SetValue(x);
1912             constr->left.SetDone(true);
1913         }
1914         if ( y != wxDefaultPosition.y )
1915         {
1916             constr->top.SetValue(y);
1917             constr->top.SetDone(true);
1918         }
1919     }
1920 }
1921
1922 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
1923 {
1924     wxLayoutConstraints *constr = GetConstraints();
1925     if ( constr )
1926     {
1927         *w = constr->width.GetValue();
1928         *h = constr->height.GetValue();
1929     }
1930     else
1931         GetSize(w, h);
1932 }
1933
1934 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
1935 {
1936     wxLayoutConstraints *constr = GetConstraints();
1937     if ( constr )
1938     {
1939         *w = constr->width.GetValue();
1940         *h = constr->height.GetValue();
1941     }
1942     else
1943         GetClientSize(w, h);
1944 }
1945
1946 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
1947 {
1948     wxLayoutConstraints *constr = GetConstraints();
1949     if ( constr )
1950     {
1951         *x = constr->left.GetValue();
1952         *y = constr->top.GetValue();
1953     }
1954     else
1955         GetPosition(x, y);
1956 }
1957
1958 #endif // wxUSE_CONSTRAINTS
1959
1960 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
1961 {
1962     // don't do it for the dialogs/frames - they float independently of their
1963     // parent
1964     if ( !IsTopLevel() )
1965     {
1966         wxWindow *parent = GetParent();
1967         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
1968         {
1969             wxPoint pt(parent->GetClientAreaOrigin());
1970             x += pt.x;
1971             y += pt.y;
1972         }
1973     }
1974 }
1975
1976 // ----------------------------------------------------------------------------
1977 // do Update UI processing for child controls
1978 // ----------------------------------------------------------------------------
1979
1980 void wxWindowBase::UpdateWindowUI(long flags)
1981 {
1982     wxUpdateUIEvent event(GetId());
1983     event.m_eventObject = this;
1984
1985     if ( GetEventHandler()->ProcessEvent(event) )
1986     {
1987         DoUpdateWindowUI(event);
1988     }
1989
1990     if (flags & wxUPDATE_UI_RECURSE)
1991     {
1992         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1993         while (node)
1994         {
1995             wxWindow* child = (wxWindow*) node->GetData();
1996             child->UpdateWindowUI(flags);
1997             node = node->GetNext();
1998         }
1999     }
2000 }
2001
2002 // do the window-specific processing after processing the update event
2003 // TODO: take specific knowledge out of this function and
2004 // put in each control's base class. Unfortunately we don't
2005 // yet have base implementation files for wxCheckBox and wxRadioButton.
2006 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
2007 {
2008     if ( event.GetSetEnabled() )
2009         Enable(event.GetEnabled());
2010
2011 #if wxUSE_CONTROLS
2012     if ( event.GetSetText() )
2013     {
2014         wxControl *control = wxDynamicCastThis(wxControl);
2015         if ( control )
2016         {
2017             if ( event.GetText() != control->GetLabel() )
2018                 control->SetLabel(event.GetText());
2019         }
2020 #if wxUSE_CHECKBOX
2021         wxCheckBox *checkbox = wxDynamicCastThis(wxCheckBox);
2022         if ( checkbox )
2023         {
2024             if ( event.GetSetChecked() )
2025                 checkbox->SetValue(event.GetChecked());
2026         }
2027 #endif // wxUSE_CHECKBOX
2028
2029 #if wxUSE_RADIOBTN
2030         wxRadioButton *radiobtn = wxDynamicCastThis(wxRadioButton);
2031         if ( radiobtn )
2032         {
2033             if ( event.GetSetChecked() )
2034                 radiobtn->SetValue(event.GetChecked());
2035         }
2036 #endif // wxUSE_RADIOBTN
2037     }
2038 #endif
2039 }
2040
2041 #if 0
2042 // call internal idle recursively
2043 // may be obsolete (wait until OnIdle scheme stabilises)
2044 void wxWindowBase::ProcessInternalIdle()
2045 {
2046     OnInternalIdle();
2047
2048     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2049     while (node)
2050     {
2051         wxWindow *child = node->GetData();
2052         child->ProcessInternalIdle();
2053         node = node->GetNext();
2054     }
2055 }
2056 #endif
2057
2058 // ----------------------------------------------------------------------------
2059 // dialog units translations
2060 // ----------------------------------------------------------------------------
2061
2062 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
2063 {
2064     int charWidth = GetCharWidth();
2065     int charHeight = GetCharHeight();
2066     wxPoint pt2(-1, -1);
2067     if (pt.x != -1)
2068         pt2.x = (int) ((pt.x * 4) / charWidth);
2069     if (pt.y != -1)
2070         pt2.y = (int) ((pt.y * 8) / charHeight);
2071
2072     return pt2;
2073 }
2074
2075 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
2076 {
2077     int charWidth = GetCharWidth();
2078     int charHeight = GetCharHeight();
2079     wxPoint pt2(-1, -1);
2080     if (pt.x != -1)
2081         pt2.x = (int) ((pt.x * charWidth) / 4);
2082     if (pt.y != -1)
2083         pt2.y = (int) ((pt.y * charHeight) / 8);
2084
2085     return pt2;
2086 }
2087
2088 // ----------------------------------------------------------------------------
2089 // event handlers
2090 // ----------------------------------------------------------------------------
2091
2092 // propagate the colour change event to the subwindows
2093 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
2094 {
2095     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2096     while ( node )
2097     {
2098         // Only propagate to non-top-level windows
2099         wxWindow *win = node->GetData();
2100         if ( !win->IsTopLevel() )
2101         {
2102             wxSysColourChangedEvent event2;
2103             event.m_eventObject = win;
2104             win->GetEventHandler()->ProcessEvent(event2);
2105         }
2106
2107         node = node->GetNext();
2108     }
2109 }
2110
2111 // the default action is to populate dialog with data when it's created,
2112 // and nudge the UI into displaying itself correctly in case
2113 // we've turned the wxUpdateUIEvents frequency down low.
2114 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
2115 {
2116     TransferDataToWindow();
2117
2118     // Update the UI at this point
2119     UpdateWindowUI(wxUPDATE_UI_RECURSE);
2120 }
2121
2122 // process Ctrl-Alt-mclick
2123 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
2124 {
2125 #if wxUSE_MSGDLG
2126     if ( event.ControlDown() && event.AltDown() )
2127     {
2128         // don't translate these strings
2129         wxString port;
2130
2131 #ifdef __WXUNIVERSAL__
2132         port = _T("Univ/");
2133 #endif // __WXUNIVERSAL__
2134
2135         switch ( wxGetOsVersion() )
2136         {
2137             case wxMOTIF_X:     port += _T("Motif"); break;
2138             case wxMAC:
2139             case wxMAC_DARWIN:  port += _T("Mac"); break;
2140             case wxBEOS:        port += _T("BeOS"); break;
2141             case wxGTK:
2142             case wxGTK_WIN32:
2143             case wxGTK_OS2:
2144             case wxGTK_BEOS:    port += _T("GTK"); break;
2145             case wxWINDOWS:
2146             case wxPENWINDOWS:
2147             case wxWINDOWS_NT:
2148             case wxWIN32S:
2149             case wxWIN95:
2150             case wxWIN386:      port += _T("MS Windows"); break;
2151             case wxMGL_UNIX:
2152             case wxMGL_X:
2153             case wxMGL_WIN32:
2154             case wxMGL_OS2:     port += _T("MGL"); break;
2155             case wxWINDOWS_OS2:
2156             case wxOS2_PM:      port += _T("OS/2"); break;
2157             default:            port += _T("unknown"); break;
2158         }
2159
2160         wxMessageBox(wxString::Format(
2161                                       _T(
2162                                         "       wxWidgets Library (%s port)\nVersion %u.%u.%u%s, compiled at %s %s\n   Copyright (c) 1995-2002 wxWidgets team"
2163                                         ),
2164                                       port.c_str(),
2165                                       wxMAJOR_VERSION,
2166                                       wxMINOR_VERSION,
2167                                       wxRELEASE_NUMBER,
2168 #if wxUSE_UNICODE
2169                                       L" (Unicode)",
2170 #else
2171                                       "",
2172 #endif
2173                                       __TDATE__,
2174                                       __TTIME__
2175                                      ),
2176                      _T("wxWidgets information"),
2177                      wxICON_INFORMATION | wxOK,
2178                      (wxWindow *)this);
2179     }
2180     else
2181 #endif // wxUSE_MSGDLG
2182     {
2183         event.Skip();
2184     }
2185 }
2186
2187 // ----------------------------------------------------------------------------
2188 // accessibility
2189 // ----------------------------------------------------------------------------
2190
2191 #if wxUSE_ACCESSIBILITY
2192 void wxWindowBase::SetAccessible(wxAccessible* accessible)
2193 {
2194     if (m_accessible && (accessible != m_accessible))
2195         delete m_accessible;
2196     m_accessible = accessible;
2197     if (m_accessible)
2198         m_accessible->SetWindow((wxWindow*) this);
2199 }
2200
2201 // Returns the accessible object, creating if necessary.
2202 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2203 {
2204     if (!m_accessible)
2205         m_accessible = CreateAccessible();
2206     return m_accessible;
2207 }
2208
2209 // Override to create a specific accessible object.
2210 wxAccessible* wxWindowBase::CreateAccessible()
2211 {
2212     return new wxWindowAccessible((wxWindow*) this);
2213 }
2214
2215 #endif
2216
2217 #if !wxUSE_STL
2218 // ----------------------------------------------------------------------------
2219 // list classes implementation
2220 // ----------------------------------------------------------------------------
2221
2222 void wxWindowListNode::DeleteData()
2223 {
2224     delete (wxWindow *)GetData();
2225 }
2226 #endif
2227
2228 // ----------------------------------------------------------------------------
2229 // borders
2230 // ----------------------------------------------------------------------------
2231
2232 wxBorder wxWindowBase::GetBorder(long flags) const
2233 {
2234     wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2235     if ( border == wxBORDER_DEFAULT )
2236     {
2237         border = GetDefaultBorder();
2238     }
2239
2240     return border;
2241 }
2242
2243 wxBorder wxWindowBase::GetDefaultBorder() const
2244 {
2245     return wxBORDER_NONE;
2246 }
2247
2248 // ----------------------------------------------------------------------------
2249 // hit testing
2250 // ----------------------------------------------------------------------------
2251
2252 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2253 {
2254     // here we just check if the point is inside the window or not
2255
2256     // check the top and left border first
2257     bool outside = x < 0 || y < 0;
2258     if ( !outside )
2259     {
2260         // check the right and bottom borders too
2261         wxSize size = GetSize();
2262         outside = x >= size.x || y >= size.y;
2263     }
2264
2265     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2266 }
2267
2268 // ----------------------------------------------------------------------------
2269 // mouse capture
2270 // ----------------------------------------------------------------------------
2271
2272 struct WXDLLEXPORT wxWindowNext
2273 {
2274     wxWindow *win;
2275     wxWindowNext *next;
2276 } *wxWindowBase::ms_winCaptureNext = NULL;
2277
2278 void wxWindowBase::CaptureMouse()
2279 {
2280     wxLogTrace(_T("mousecapture"), _T("CaptureMouse(%p)"), this);
2281
2282     wxWindow *winOld = GetCapture();
2283     if ( winOld )
2284     {
2285         ((wxWindowBase*) winOld)->DoReleaseMouse();
2286
2287         // save it on stack
2288         wxWindowNext *item = new wxWindowNext;
2289         item->win = winOld;
2290         item->next = ms_winCaptureNext;
2291         ms_winCaptureNext = item;
2292     }
2293     //else: no mouse capture to save
2294
2295     DoCaptureMouse();
2296 }
2297
2298 void wxWindowBase::ReleaseMouse()
2299 {
2300     wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(%p)"), this);
2301
2302     wxASSERT_MSG( GetCapture() == this, wxT("attempt to release mouse, but this window hasn't captured it") );
2303
2304     DoReleaseMouse();
2305
2306     if ( ms_winCaptureNext )
2307     {
2308         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2309
2310         wxWindowNext *item = ms_winCaptureNext;
2311         ms_winCaptureNext = item->next;
2312         delete item;
2313     }
2314     //else: stack is empty, no previous capture
2315
2316     wxLogTrace(_T("mousecapture"),
2317         (const wxChar *) _T("After ReleaseMouse() mouse is captured by %p"),
2318         GetCapture());
2319 }
2320
2321 #if wxUSE_HOTKEY
2322
2323 bool
2324 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2325                              int WXUNUSED(modifiers),
2326                              int WXUNUSED(keycode))
2327 {
2328     // not implemented
2329     return false;
2330 }
2331
2332 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2333 {
2334     // not implemented
2335     return false;
2336 }
2337
2338 #endif // wxUSE_HOTKEY
2339
2340 void wxWindowBase::SendDestroyEvent()
2341 {
2342     wxWindowDestroyEvent event;
2343     event.SetEventObject(this);
2344     event.SetId(GetId());
2345     GetEventHandler()->ProcessEvent(event);
2346 }
2347
2348 // ----------------------------------------------------------------------------
2349 // event processing
2350 // ----------------------------------------------------------------------------
2351
2352 bool wxWindowBase::TryValidator(wxEvent& wxVALIDATOR_PARAM(event))
2353 {
2354 #if wxUSE_VALIDATORS
2355     // Can only use the validator of the window which
2356     // is receiving the event
2357     if ( event.GetEventObject() == this )
2358     {
2359         wxValidator *validator = GetValidator();
2360         if ( validator && validator->ProcessEvent(event) )
2361         {
2362             return true;
2363         }
2364     }
2365 #endif // wxUSE_VALIDATORS
2366
2367     return false;
2368 }
2369
2370 bool wxWindowBase::TryParent(wxEvent& event)
2371 {
2372     // carry on up the parent-child hierarchy if the propgation count hasn't
2373     // reached zero yet
2374     if ( event.ShouldPropagate() )
2375     {
2376         // honour the requests to stop propagation at this window: this is
2377         // used by the dialogs, for example, to prevent processing the events
2378         // from the dialog controls in the parent frame which rarely, if ever,
2379         // makes sense
2380         if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
2381         {
2382             wxWindow *parent = GetParent();
2383             if ( parent && !parent->IsBeingDeleted() )
2384             {
2385                 wxPropagateOnce propagateOnce(event);
2386
2387                 return parent->GetEventHandler()->ProcessEvent(event);
2388             }
2389         }
2390     }
2391
2392     return wxEvtHandler::TryParent(event);
2393 }
2394
2395 // ----------------------------------------------------------------------------
2396 // navigation
2397 // ----------------------------------------------------------------------------
2398
2399 // Navigates in the specified direction.
2400 bool wxWindowBase::Navigate(int flags)
2401 {
2402     wxNavigationKeyEvent eventNav;
2403     eventNav.SetFlags(flags);
2404     eventNav.SetEventObject(this);
2405     if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
2406     {
2407         return true;
2408     }
2409     return false;
2410 }
2411
2412 // ----------------------------------------------------------------------------
2413 // global functions
2414 // ----------------------------------------------------------------------------
2415
2416 wxWindow* wxGetTopLevelParent(wxWindow *win)
2417 {
2418     while ( win && !win->IsTopLevel() )
2419          win = win->GetParent();
2420
2421     return win;
2422 }
2423
2424 #if wxUSE_ACCESSIBILITY
2425 // ----------------------------------------------------------------------------
2426 // accessible object for windows
2427 // ----------------------------------------------------------------------------
2428
2429 // Can return either a child object, or an integer
2430 // representing the child element, starting from 1.
2431 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
2432 {
2433     wxASSERT( GetWindow() != NULL );
2434     if (!GetWindow())
2435         return wxACC_FAIL;
2436
2437     return wxACC_NOT_IMPLEMENTED;
2438 }
2439
2440 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
2441 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
2442 {
2443     wxASSERT( GetWindow() != NULL );
2444     if (!GetWindow())
2445         return wxACC_FAIL;
2446
2447     wxWindow* win = NULL;
2448     if (elementId == 0)
2449     {
2450         win = GetWindow();
2451     }
2452     else
2453     {
2454         if (elementId <= (int) GetWindow()->GetChildren().GetCount())
2455         {
2456             win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
2457         }
2458         else
2459             return wxACC_FAIL;
2460     }
2461     if (win)
2462     {
2463         rect = win->GetRect();
2464         if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
2465             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
2466         return wxACC_OK;
2467     }
2468
2469     return wxACC_NOT_IMPLEMENTED;
2470 }
2471
2472 // Navigates from fromId to toId/toObject.
2473 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
2474                              int* WXUNUSED(toId), wxAccessible** toObject)
2475 {
2476     wxASSERT( GetWindow() != NULL );
2477     if (!GetWindow())
2478         return wxACC_FAIL;
2479
2480     switch (navDir)
2481     {
2482     case wxNAVDIR_FIRSTCHILD:
2483         {
2484             if (GetWindow()->GetChildren().GetCount() == 0)
2485                 return wxACC_FALSE;
2486             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
2487             *toObject = childWindow->GetOrCreateAccessible();
2488
2489             return wxACC_OK;
2490         }
2491     case wxNAVDIR_LASTCHILD:
2492         {
2493             if (GetWindow()->GetChildren().GetCount() == 0)
2494                 return wxACC_FALSE;
2495             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
2496             *toObject = childWindow->GetOrCreateAccessible();
2497
2498             return wxACC_OK;
2499         }
2500     case wxNAVDIR_RIGHT:
2501     case wxNAVDIR_DOWN:
2502     case wxNAVDIR_NEXT:
2503         {
2504             wxWindowList::compatibility_iterator node =
2505                 wxWindowList::compatibility_iterator();
2506             if (fromId == 0)
2507             {
2508                 // Can't navigate to sibling of this window
2509                 // if we're a top-level window.
2510                 if (!GetWindow()->GetParent())
2511                     return wxACC_NOT_IMPLEMENTED;
2512
2513                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2514             }
2515             else
2516             {
2517                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2518                     node = GetWindow()->GetChildren().Item(fromId-1);
2519             }
2520
2521             if (node && node->GetNext())
2522             {
2523                 wxWindow* nextWindow = node->GetNext()->GetData();
2524                 *toObject = nextWindow->GetOrCreateAccessible();
2525                 return wxACC_OK;
2526             }
2527             else
2528                 return wxACC_FALSE;
2529         }
2530     case wxNAVDIR_LEFT:
2531     case wxNAVDIR_UP:
2532     case wxNAVDIR_PREVIOUS:
2533         {
2534             wxWindowList::compatibility_iterator node =
2535                 wxWindowList::compatibility_iterator();
2536             if (fromId == 0)
2537             {
2538                 // Can't navigate to sibling of this window
2539                 // if we're a top-level window.
2540                 if (!GetWindow()->GetParent())
2541                     return wxACC_NOT_IMPLEMENTED;
2542
2543                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2544             }
2545             else
2546             {
2547                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2548                     node = GetWindow()->GetChildren().Item(fromId-1);
2549             }
2550
2551             if (node && node->GetPrevious())
2552             {
2553                 wxWindow* previousWindow = node->GetPrevious()->GetData();
2554                 *toObject = previousWindow->GetOrCreateAccessible();
2555                 return wxACC_OK;
2556             }
2557             else
2558                 return wxACC_FALSE;
2559         }
2560     }
2561
2562     return wxACC_NOT_IMPLEMENTED;
2563 }
2564
2565 // Gets the name of the specified object.
2566 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
2567 {
2568     wxASSERT( GetWindow() != NULL );
2569     if (!GetWindow())
2570         return wxACC_FAIL;
2571
2572     wxString title;
2573
2574     // If a child, leave wxWidgets to call the function on the actual
2575     // child object.
2576     if (childId > 0)
2577         return wxACC_NOT_IMPLEMENTED;
2578
2579     // This will eventually be replaced by specialised
2580     // accessible classes, one for each kind of wxWidgets
2581     // control or window.
2582 #if wxUSE_BUTTON
2583     if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
2584         title = ((wxButton*) GetWindow())->GetLabel();
2585     else
2586 #endif
2587         title = GetWindow()->GetName();
2588
2589     if (!title.IsEmpty())
2590     {
2591         *name = title;
2592         return wxACC_OK;
2593     }
2594     else
2595         return wxACC_NOT_IMPLEMENTED;
2596 }
2597
2598 // Gets the number of children.
2599 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
2600 {
2601     wxASSERT( GetWindow() != NULL );
2602     if (!GetWindow())
2603         return wxACC_FAIL;
2604
2605     *childId = (int) GetWindow()->GetChildren().GetCount();
2606     return wxACC_OK;
2607 }
2608
2609 // Gets the specified child (starting from 1).
2610 // If *child is NULL and return value is wxACC_OK,
2611 // this means that the child is a simple element and
2612 // not an accessible object.
2613 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
2614 {
2615     wxASSERT( GetWindow() != NULL );
2616     if (!GetWindow())
2617         return wxACC_FAIL;
2618
2619     if (childId == 0)
2620     {
2621         *child = this;
2622         return wxACC_OK;
2623     }
2624
2625     if (childId > (int) GetWindow()->GetChildren().GetCount())
2626         return wxACC_FAIL;
2627
2628     wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
2629     *child = childWindow->GetOrCreateAccessible();
2630     if (*child)
2631         return wxACC_OK;
2632     else
2633         return wxACC_FAIL;
2634 }
2635
2636 // Gets the parent, or NULL.
2637 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
2638 {
2639     wxASSERT( GetWindow() != NULL );
2640     if (!GetWindow())
2641         return wxACC_FAIL;
2642
2643     wxWindow* parentWindow = GetWindow()->GetParent();
2644     if (!parentWindow)
2645     {
2646         *parent = NULL;
2647         return wxACC_OK;
2648     }
2649     else
2650     {
2651         *parent = parentWindow->GetOrCreateAccessible();
2652         if (*parent)
2653             return wxACC_OK;
2654         else
2655             return wxACC_FAIL;
2656     }
2657 }
2658
2659 // Performs the default action. childId is 0 (the action for this object)
2660 // or > 0 (the action for a child).
2661 // Return wxACC_NOT_SUPPORTED if there is no default action for this
2662 // window (e.g. an edit control).
2663 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
2664 {
2665     wxASSERT( GetWindow() != NULL );
2666     if (!GetWindow())
2667         return wxACC_FAIL;
2668
2669     return wxACC_NOT_IMPLEMENTED;
2670 }
2671
2672 // Gets the default action for this object (0) or > 0 (the action for a child).
2673 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
2674 // string if there is no action.
2675 // The retrieved string describes the action that is performed on an object,
2676 // not what the object does as a result. For example, a toolbar button that prints
2677 // a document has a default action of "Press" rather than "Prints the current document."
2678 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
2679 {
2680     wxASSERT( GetWindow() != NULL );
2681     if (!GetWindow())
2682         return wxACC_FAIL;
2683
2684     return wxACC_NOT_IMPLEMENTED;
2685 }
2686
2687 // Returns the description for this object or a child.
2688 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
2689 {
2690     wxASSERT( GetWindow() != NULL );
2691     if (!GetWindow())
2692         return wxACC_FAIL;
2693
2694     wxString ht(GetWindow()->GetHelpText());
2695     if (!ht.IsEmpty())
2696     {
2697         *description = ht;
2698         return wxACC_OK;
2699     }
2700     return wxACC_NOT_IMPLEMENTED;
2701 }
2702
2703 // Returns help text for this object or a child, similar to tooltip text.
2704 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
2705 {
2706     wxASSERT( GetWindow() != NULL );
2707     if (!GetWindow())
2708         return wxACC_FAIL;
2709
2710     wxString ht(GetWindow()->GetHelpText());
2711     if (!ht.IsEmpty())
2712     {
2713         *helpText = ht;
2714         return wxACC_OK;
2715     }
2716     return wxACC_NOT_IMPLEMENTED;
2717 }
2718
2719 // Returns the keyboard shortcut for this object or child.
2720 // Return e.g. ALT+K
2721 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
2722 {
2723     wxASSERT( GetWindow() != NULL );
2724     if (!GetWindow())
2725         return wxACC_FAIL;
2726
2727     return wxACC_NOT_IMPLEMENTED;
2728 }
2729
2730 // Returns a role constant.
2731 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
2732 {
2733     wxASSERT( GetWindow() != NULL );
2734     if (!GetWindow())
2735         return wxACC_FAIL;
2736
2737     // If a child, leave wxWidgets to call the function on the actual
2738     // child object.
2739     if (childId > 0)
2740         return wxACC_NOT_IMPLEMENTED;
2741
2742     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2743         return wxACC_NOT_IMPLEMENTED;
2744 #if wxUSE_STATUSBAR
2745     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2746         return wxACC_NOT_IMPLEMENTED;
2747 #endif
2748 #if wxUSE_TOOLBAR
2749     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2750         return wxACC_NOT_IMPLEMENTED;
2751 #endif
2752
2753     //*role = wxROLE_SYSTEM_CLIENT;
2754     *role = wxROLE_SYSTEM_CLIENT;
2755     return wxACC_OK;
2756
2757     #if 0
2758     return wxACC_NOT_IMPLEMENTED;
2759     #endif
2760 }
2761
2762 // Returns a state constant.
2763 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
2764 {
2765     wxASSERT( GetWindow() != NULL );
2766     if (!GetWindow())
2767         return wxACC_FAIL;
2768
2769     // If a child, leave wxWidgets to call the function on the actual
2770     // child object.
2771     if (childId > 0)
2772         return wxACC_NOT_IMPLEMENTED;
2773
2774     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2775         return wxACC_NOT_IMPLEMENTED;
2776
2777 #if wxUSE_STATUSBAR
2778     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2779         return wxACC_NOT_IMPLEMENTED;
2780 #endif
2781 #if wxUSE_TOOLBAR
2782     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2783         return wxACC_NOT_IMPLEMENTED;
2784 #endif
2785
2786     *state = 0;
2787     return wxACC_OK;
2788
2789     #if 0
2790     return wxACC_NOT_IMPLEMENTED;
2791     #endif
2792 }
2793
2794 // Returns a localized string representing the value for the object
2795 // or child.
2796 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
2797 {
2798     wxASSERT( GetWindow() != NULL );
2799     if (!GetWindow())
2800         return wxACC_FAIL;
2801
2802     return wxACC_NOT_IMPLEMENTED;
2803 }
2804
2805 // Selects the object or child.
2806 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
2807 {
2808     wxASSERT( GetWindow() != NULL );
2809     if (!GetWindow())
2810         return wxACC_FAIL;
2811
2812     return wxACC_NOT_IMPLEMENTED;
2813 }
2814
2815 // Gets the window with the keyboard focus.
2816 // If childId is 0 and child is NULL, no object in
2817 // this subhierarchy has the focus.
2818 // If this object has the focus, child should be 'this'.
2819 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
2820 {
2821     wxASSERT( GetWindow() != NULL );
2822     if (!GetWindow())
2823         return wxACC_FAIL;
2824
2825     return wxACC_NOT_IMPLEMENTED;
2826 }
2827
2828 // Gets a variant representing the selected children
2829 // of this object.
2830 // Acceptable values:
2831 // - a null variant (IsNull() returns TRUE)
2832 // - a list variant (GetType() == wxT("list")
2833 // - an integer representing the selected child element,
2834 //   or 0 if this object is selected (GetType() == wxT("long")
2835 // - a "void*" pointer to a wxAccessible child object
2836 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
2837 {
2838     wxASSERT( GetWindow() != NULL );
2839     if (!GetWindow())
2840         return wxACC_FAIL;
2841
2842     return wxACC_NOT_IMPLEMENTED;
2843 }
2844
2845 #endif // wxUSE_ACCESSIBILITY