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     // invalidiated cache value
 129     m_bestSizeCache = wxDefaultSize;
 130
 131     // window are created enabled and visible by default
 132     m_isShown =
 133     m_isEnabled = true;
 134
 135     // the default event handler is just this window
 136     m_eventHandler = this;
 137
 138 #if wxUSE_VALIDATORS
 139     // no validator
 140     m_windowValidator = (wxValidator *) NULL;
 141 #endif // wxUSE_VALIDATORS
 142
 143     // the colours/fonts are default for now, so leave m_font,
 144     // m_backgroundColour and m_foregroundColour uninitialized and set those
 145     m_hasBgCol =
 146     m_hasFgCol =
 147     m_hasFont = false;
 148
 149     // no style bits
 150     m_exStyle =
 151     m_windowStyle = 0;
 152
 153 #if wxUSE_CONSTRAINTS
 154     // no constraints whatsoever
 155     m_constraints = (wxLayoutConstraints *) NULL;
 156     m_constraintsInvolvedIn = (wxWindowList *) NULL;
 157 #endif // wxUSE_CONSTRAINTS
 158
 159     m_windowSizer = (wxSizer *) NULL;
 160     m_containingSizer = (wxSizer *) NULL;
 161     m_autoLayout = false;
 162
 163 #if wxUSE_DRAG_AND_DROP
 164     m_dropTarget = (wxDropTarget *)NULL;
 165 #endif // wxUSE_DRAG_AND_DROP
 166
 167 #if wxUSE_TOOLTIPS
 168     m_tooltip = (wxToolTip *)NULL;
 169 #endif // wxUSE_TOOLTIPS
 170
 171 #if wxUSE_CARET
 172     m_caret = (wxCaret *)NULL;
 173 #endif // wxUSE_CARET
 174
 175 #if wxUSE_PALETTE
 176     m_hasCustomPalette = false;
 177 #endif // wxUSE_PALETTE
 178
 179 #if wxUSE_ACCESSIBILITY
 180     m_accessible = NULL;
 181 #endif
 182
 183     m_virtualSize = wxDefaultSize;
 184
 185     m_minVirtualWidth =
 186     m_maxVirtualWidth = wxDefaultSize.x;
 187     m_minVirtualHeight =
 188     m_maxVirtualHeight = wxDefaultSize.y;
 189
 190     m_windowVariant = wxWINDOW_VARIANT_NORMAL;
 191
 192     // Whether we're using the current theme for this window (wxGTK only for now)
 193     m_themeEnabled = false;
 194
 195     // VZ: this one shouldn't exist...
 196     m_isBeingDeleted = false;
 197 }
 198
 199 // common part of window creation process
 200 bool wxWindowBase::CreateBase(wxWindowBase *parent,
 201                               wxWindowID id,
 202                               const wxPoint& WXUNUSED(pos),
 203                               const wxSize& WXUNUSED(size),
 204                               long style,
 205                               const wxValidator& wxVALIDATOR_PARAM(validator),
 206                               const wxString& name)
 207 {
 208 #if wxUSE_STATBOX
 209     // wxGTK doesn't allow to create controls with static box as the parent so
 210     // this will result in a crash when the program is ported to wxGTK so warn
 211     // the user about it
 212
 213     // if you get this assert, the correct solution is to create the controls
 214     // as siblings of the static box
 215     wxASSERT_MSG( !parent || !wxDynamicCast(parent, wxStaticBox),
 216                   _T("wxStaticBox can't be used as a window parent!") );
 217 #endif // wxUSE_STATBOX
 218
 219     // ids are limited to 16 bits under MSW so if you care about portability,
 220     // it's not a good idea to use ids out of this range (and negative ids are
 221     // reserved for wxWidgets own usage)
 222     wxASSERT_MSG( id == wxID_ANY || (id >= 0 && id < 32767),
 223                   _T("invalid id value") );
 224
 225     // generate a new id if the user doesn't care about it
 226     m_windowId = id == wxID_ANY ? NewControlId() : id;
 227
 228     SetName(name);
 229     SetWindowStyleFlag(style);
 230     SetParent(parent);
 231
 232 #if wxUSE_VALIDATORS
 233     SetValidator(validator);
 234 #endif // wxUSE_VALIDATORS
 235
 236     // if the parent window has wxWS_EX_VALIDATE_RECURSIVELY set, we want to
 237     // have it too - like this it's possible to set it only in the top level
 238     // dialog/frame and all children will inherit it by defult
 239     if ( parent && (parent->GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) )
 240     {
 241         SetExtraStyle(GetExtraStyle() | wxWS_EX_VALIDATE_RECURSIVELY);
 242     }
 243
 244     return true;
 245 }
 246
 247 // ----------------------------------------------------------------------------
 248 // destruction
 249 // ----------------------------------------------------------------------------
 250
 251 // common clean up
 252 wxWindowBase::~wxWindowBase()
 253 {
 254     wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
 255
 256     // FIXME if these 2 cases result from programming errors in the user code
 257     //       we should probably assert here instead of silently fixing them
 258
 259     // Just in case the window has been Closed, but we're then deleting
 260     // immediately: don't leave dangling pointers.
 261     wxPendingDelete.DeleteObject(this);
 262
 263     // Just in case we've loaded a top-level window via LoadNativeDialog but
 264     // we weren't a dialog class
 265     wxTopLevelWindows.DeleteObject((wxWindow*)this);
 266
 267     wxASSERT_MSG( GetChildren().GetCount() == 0, wxT("children not destroyed") );
 268
 269     // reset the dangling pointer our parent window may keep to us
 270     if ( m_parent )
 271     {
 272         if ( m_parent->GetDefaultItem() == this )
 273         {
 274             m_parent->SetDefaultItem(NULL);
 275         }
 276
 277         m_parent->RemoveChild(this);
 278     }
 279
 280 #if wxUSE_CARET
 281     delete m_caret;
 282 #endif // wxUSE_CARET
 283
 284 #if wxUSE_VALIDATORS
 285     delete m_windowValidator;
 286 #endif // wxUSE_VALIDATORS
 287
 288 #if wxUSE_CONSTRAINTS
 289     // Have to delete constraints/sizer FIRST otherwise sizers may try to look
 290     // at deleted windows as they delete themselves.
 291     DeleteRelatedConstraints();
 292
 293     if ( m_constraints )
 294     {
 295         // This removes any dangling pointers to this window in other windows'
 296         // constraintsInvolvedIn lists.
 297         UnsetConstraints(m_constraints);
 298         delete m_constraints;
 299         m_constraints = NULL;
 300     }
 301 #endif // wxUSE_CONSTRAINTS
 302
 303     if ( m_containingSizer )
 304         m_containingSizer->Detach( (wxWindow*)this );
 305
 306     delete m_windowSizer;
 307
 308 #if wxUSE_DRAG_AND_DROP
 309     delete m_dropTarget;
 310 #endif // wxUSE_DRAG_AND_DROP
 311
 312 #if wxUSE_TOOLTIPS
 313     delete m_tooltip;
 314 #endif // wxUSE_TOOLTIPS
 315
 316 #if wxUSE_ACCESSIBILITY
 317     delete m_accessible;
 318 #endif
 319 }
 320
 321 bool wxWindowBase::Destroy()
 322 {
 323     delete this;
 324
 325     return true;
 326 }
 327
 328 bool wxWindowBase::Close(bool force)
 329 {
 330     wxCloseEvent event(wxEVT_CLOSE_WINDOW, m_windowId);
 331     event.SetEventObject(this);
 332     event.SetCanVeto(!force);
 333
 334     // return false if window wasn't closed because the application vetoed the
 335     // close event
 336     return GetEventHandler()->ProcessEvent(event) && !event.GetVeto();
 337 }
 338
 339 bool wxWindowBase::DestroyChildren()
 340 {
 341     wxWindowList::compatibility_iterator node;
 342     for ( ;; )
 343     {
 344         // we iterate until the list becomes empty
 345         node = GetChildren().GetFirst();
 346         if ( !node )
 347             break;
 348
 349         wxWindow *child = node->GetData();
 350
 351         // note that we really want to call delete and not ->Destroy() here
 352         // because we want to delete the child immediately, before we are
 353         // deleted, and delayed deletion would result in problems as our (top
 354         // level) child could outlive its parent
 355         delete child;
 356
 357         wxASSERT_MSG( !GetChildren().Find(child),
 358                       wxT("child didn't remove itself using RemoveChild()") );
 359     }
 360
 361     return true;
 362 }
 363
 364 // ----------------------------------------------------------------------------
 365 // size/position related methods
 366 // ----------------------------------------------------------------------------
 367
 368 // centre the window with respect to its parent in either (or both) directions
 369 void wxWindowBase::Centre(int direction)
 370 {
 371     // the position/size of the parent window or of the entire screen
 372     wxPoint posParent;
 373     int widthParent, heightParent;
 374
 375     wxWindow *parent = NULL;
 376
 377     if ( !(direction & wxCENTRE_ON_SCREEN) )
 378     {
 379         // find the parent to centre this window on: it should be the
 380         // immediate parent for the controls but the top level parent for the
 381         // top level windows (like dialogs)
 382         parent = GetParent();
 383         if ( IsTopLevel() )
 384         {
 385             while ( parent && !parent->IsTopLevel() )
 386             {
 387                 parent = parent->GetParent();
 388             }
 389         }
 390
 391         // there is no wxTopLevelWindow under wxMotif yet
 392 #ifndef __WXMOTIF__
 393         // we shouldn't center the dialog on the iconized window: under
 394         // Windows, for example, this places it completely off the screen
 395         if ( parent )
 396         {
 397             wxTopLevelWindow *winTop = wxDynamicCast(parent, wxTopLevelWindow);
 398             if ( winTop && winTop->IsIconized() )
 399             {
 400                 parent = NULL;
 401             }
 402         }
 403 #endif // __WXMOTIF__
 404
 405         // did we find the parent?
 406         if ( !parent )
 407         {
 408             // no other choice
 409             direction |= wxCENTRE_ON_SCREEN;
 410         }
 411     }
 412
 413     if ( direction & wxCENTRE_ON_SCREEN )
 414     {
 415         // centre with respect to the whole screen
 416         wxDisplaySize(&widthParent, &heightParent);
 417     }
 418     else
 419     {
 420         if ( IsTopLevel() )
 421         {
 422             // centre on the parent
 423             parent->GetSize(&widthParent, &heightParent);
 424
 425             // adjust to the parents position
 426             posParent = parent->GetPosition();
 427         }
 428         else
 429         {
 430             // centre inside the parents client rectangle
 431             parent->GetClientSize(&widthParent, &heightParent);
 432         }
 433     }
 434
 435     int width, height;
 436     GetSize(&width, &height);
 437
 438     int xNew = wxDefaultPosition.x,
 439         yNew = wxDefaultPosition.y;
 440
 441     if ( direction & wxHORIZONTAL )
 442         xNew = (widthParent - width)/2;
 443
 444     if ( direction & wxVERTICAL )
 445         yNew = (heightParent - height)/2;
 446
 447     xNew += posParent.x;
 448     yNew += posParent.y;
 449
 450     // Base size of the visible dimensions of the display
 451     // to take into account the taskbar
 452     wxRect rect = wxGetClientDisplayRect();
 453     wxSize size (rect.width,rect.height);
 454
 455     // NB: in wxMSW, negative position may not neccessary mean "out of screen",
 456     //     but it may mean that the window is placed on other than the main
 457     //     display. Therefore we only make sure centered window is on the main display
 458     //     if the parent is at least partially present here.
 459     if (posParent.x + widthParent >= 0)  // if parent is (partially) on the main display
 460     {
 461         if (xNew < 0)
 462             xNew = 0;
 463         else if (xNew+width > size.x)
 464             xNew = size.x-width-1;
 465     }
 466     if (posParent.y + heightParent >= 0)  // if parent is (partially) on the main display
 467     {
 468         if (yNew+height > size.y)
 469             yNew = size.y-height-1;
 470
 471         // Make certain that the title bar is initially visible
 472         // always, even if this would push the bottom of the
 473         // dialog of the visible area of the display
 474         if (yNew < 0)
 475             yNew = 0;
 476     }
 477
 478     // move the window to this position (keeping the old size but using
 479     // SetSize() and not Move() to allow xNew and/or yNew to be -1)
 480     SetSize(xNew, yNew, width, height, wxSIZE_ALLOW_MINUS_ONE);
 481 }
 482
 483 // fits the window around the children
 484 void wxWindowBase::Fit()
 485 {
 486     if ( GetChildren().GetCount() > 0 )
 487     {
 488         SetClientSize(GetBestSize());
 489     }
 490     //else: do nothing if we have no children
 491 }
 492
 493 // fits virtual size (ie. scrolled area etc.) around children
 494 void wxWindowBase::FitInside()
 495 {
 496     if ( GetChildren().GetCount() > 0 )
 497     {
 498         SetVirtualSize( GetBestVirtualSize() );
 499     }
 500 }
 501
 502 // On Mac, scrollbars are explicitly children.
 503 #ifdef __WXMAC__
 504 static bool wxHasRealChildren(const wxWindowBase* win)
 505 {
 506     int realChildCount = 0;
 507
 508     for ( wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
 509           node;
 510           node = node->GetNext() )
 511     {
 512         wxWindow *win = node->GetData();
 513         if ( !win->IsTopLevel() && win->IsShown() && !win->IsKindOf(CLASSINFO(wxScrollBar)))
 514             realChildCount ++;
 515     }
 516     return (realChildCount > 0);
 517 }
 518 #endif
 519
 520 // return the size best suited for the current window
 521 wxSize wxWindowBase::DoGetBestSize() const
 522 {
 523     if ( m_windowSizer )
 524     {
 525         return m_windowSizer->GetMinSize();
 526     }
 527 #if wxUSE_CONSTRAINTS
 528     else if ( m_constraints )
 529     {
 530         wxConstCast(this, wxWindowBase)->SatisfyConstraints();
 531
 532         // our minimal acceptable size is such that all our windows fit inside
 533         int maxX = 0,
 534             maxY = 0;
 535
 536         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 537               node;
 538               node = node->GetNext() )
 539         {
 540             wxLayoutConstraints *c = node->GetData()->GetConstraints();
 541             if ( !c )
 542             {
 543                 // it's not normal that we have an unconstrained child, but
 544                 // what can we do about it?
 545                 continue;
 546             }
 547
 548             int x = c->right.GetValue(),
 549                 y = c->bottom.GetValue();
 550
 551             if ( x > maxX )
 552                 maxX = x;
 553
 554             if ( y > maxY )
 555                 maxY = y;
 556
 557             // TODO: we must calculate the overlaps somehow, otherwise we
 558             //       will never return a size bigger than the current one :-(
 559         }
 560
 561         return wxSize(maxX, maxY);
 562     }
 563 #endif // wxUSE_CONSTRAINTS
 564     else if ( !GetChildren().empty()
 565 #ifdef __WXMAC__
 566               && wxHasRealChildren(this)
 567 #endif
 568               )
 569     {
 570         // our minimal acceptable size is such that all our visible child windows fit inside
 571         int maxX = 0,
 572             maxY = 0;
 573
 574         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 575               node;
 576               node = node->GetNext() )
 577         {
 578             wxWindow *win = node->GetData();
 579             if ( win->IsTopLevel()  || ( ! win->IsShown() )
 580 #if wxUSE_STATUSBAR
 581                     || wxDynamicCast(win, wxStatusBar)
 582 #endif // wxUSE_STATUSBAR
 583                )
 584             {
 585                 // dialogs and frames lie in different top level windows -
 586                 // don't deal with them here; as for the status bars, they
 587                 // don't lie in the client area at all
 588                 continue;
 589             }
 590
 591             int wx, wy, ww, wh;
 592             win->GetPosition(&wx, &wy);
 593
 594             // if the window hadn't been positioned yet, assume that it is in
 595             // the origin
 596             if ( wx == wxDefaultPosition.x )
 597                 wx = 0;
 598             if ( wy == wxDefaultPosition.y )
 599                 wy = 0;
 600
 601             win->GetSize(&ww, &wh);
 602             if ( wx + ww > maxX )
 603                 maxX = wx + ww;
 604             if ( wy + wh > maxY )
 605                 maxY = wy + wh;
 606         }
 607
 608         // for compatibility with the old versions and because it really looks
 609         // slightly more pretty like this, add a pad
 610         maxX += 7;
 611         maxY += 14;
 612
 613         return wxSize(maxX, maxY);
 614     }
 615     else // ! has children
 616     {
 617         // for a generic window there is no natural best size - just use either the
 618         // minimum size if there is one, or the current size
 619         if ( GetMinSize().IsFullySpecified() )
 620             return GetMinSize();
 621         else
 622             return GetSize();
 623     }
 624 }
 625
 626
 627 wxSize wxWindowBase::GetBestFittingSize() const
 628 {
 629     // merge the best size with the min size, giving priority to the min size
 630     wxSize min = GetMinSize();
 631     if (min.x == wxDefaultCoord || min.y == wxDefaultCoord)
 632     {
 633         wxSize best = GetBestSize();
 634         if (min.x == wxDefaultCoord) min.x =  best.x;
 635         if (min.y == wxDefaultCoord) min.y =  best.y;
 636     }
 637     return min;
 638 }
 639
 640
 641 void wxWindowBase::SetBestFittingSize(const wxSize& size)
 642 {
 643     // Set the min size to the size passed in.  This will usually either be
 644     // wxDefaultSize or the size passed to this window's ctor/Create function.
 645     SetMinSize(size);
 646
 647     // Merge the size with the best size if needed
 648     wxSize best = GetBestFittingSize();
 649
 650     // If the current size doesn't match then change it
 651     if (GetSize() != best)
 652         SetSize(best);
 653 }
 654
 655
 656 // by default the origin is not shifted
 657 wxPoint wxWindowBase::GetClientAreaOrigin() const
 658 {
 659     return wxPoint(0, 0);
 660 }
 661
 662 // set the min/max size of the window
 663 void wxWindowBase::SetSizeHints(int minW, int minH,
 664                                 int maxW, int maxH,
 665                                 int WXUNUSED(incW), int WXUNUSED(incH))
 666 {
 667     // setting min width greater than max width leads to infinite loops under
 668     // X11 and generally doesn't make any sense, so don't allow it
 669     wxCHECK_RET( (minW == wxDefaultSize.x || maxW == wxDefaultSize.x || minW <= maxW) &&
 670                     (minH == wxDefaultSize.y || maxH == wxDefaultSize.y || minH <= maxH),
 671                  _T("min width/height must be less than max width/height!") );
 672
 673     m_minWidth = minW;
 674     m_maxWidth = maxW;
 675     m_minHeight = minH;
 676     m_maxHeight = maxH;
 677 }
 678
 679 void wxWindowBase::SetWindowVariant( wxWindowVariant variant )
 680 {
 681     if ( m_windowVariant != variant )
 682     {
 683         m_windowVariant = variant;
 684
 685         DoSetWindowVariant(variant);
 686     }
 687 }
 688
 689 void wxWindowBase::DoSetWindowVariant( wxWindowVariant variant )
 690 {
 691     // adjust the font height to correspond to our new variant (notice that
 692     // we're only called if something really changed)
 693     wxFont font = GetFont();
 694     int size = font.GetPointSize();
 695     switch ( variant )
 696     {
 697         case wxWINDOW_VARIANT_NORMAL:
 698             break;
 699
 700         case wxWINDOW_VARIANT_SMALL:
 701             size *= 3;
 702             size /= 4;
 703             break;
 704
 705         case wxWINDOW_VARIANT_MINI:
 706             size *= 2;
 707             size /= 3;
 708             break;
 709
 710         case wxWINDOW_VARIANT_LARGE:
 711             size *= 5;
 712             size /= 4;
 713             break;
 714
 715         default:
 716             wxFAIL_MSG(_T("unexpected window variant"));
 717             break;
 718     }
 719
 720     font.SetPointSize(size);
 721     SetFont(font);
 722 }
 723
 724 void wxWindowBase::SetVirtualSizeHints( int minW, int minH,
 725                                         int maxW, int maxH )
 726 {
 727     m_minVirtualWidth = minW;
 728     m_maxVirtualWidth = maxW;
 729     m_minVirtualHeight = minH;
 730     m_maxVirtualHeight = maxH;
 731 }
 732
 733 void wxWindowBase::DoSetVirtualSize( int x, int y )
 734 {
 735     if ( m_minVirtualWidth != wxDefaultSize.x && m_minVirtualWidth > x )
 736         x = m_minVirtualWidth;
 737     if ( m_maxVirtualWidth != wxDefaultSize.x && m_maxVirtualWidth < x )
 738         x = m_maxVirtualWidth;
 739     if ( m_minVirtualHeight != wxDefaultSize.y && m_minVirtualHeight > y )
 740         y = m_minVirtualHeight;
 741     if ( m_maxVirtualHeight != wxDefaultSize.y && m_maxVirtualHeight < y )
 742         y = m_maxVirtualHeight;
 743
 744     m_virtualSize = wxSize(x, y);
 745 }
 746
 747 wxSize wxWindowBase::DoGetVirtualSize() const
 748 {
 749     wxSize  s( GetClientSize() );
 750
 751     return wxSize( wxMax( m_virtualSize.GetWidth(), s.GetWidth() ),
 752                    wxMax( m_virtualSize.GetHeight(), s.GetHeight() ) );
 753 }
 754
 755 // ----------------------------------------------------------------------------
 756 // show/hide/enable/disable the window
 757 // ----------------------------------------------------------------------------
 758
 759 bool wxWindowBase::Show(bool show)
 760 {
 761     if ( show != m_isShown )
 762     {
 763         m_isShown = show;
 764
 765         return true;
 766     }
 767     else
 768     {
 769         return false;
 770     }
 771 }
 772
 773 bool wxWindowBase::Enable(bool enable)
 774 {
 775     if ( enable != m_isEnabled )
 776     {
 777         m_isEnabled = enable;
 778
 779         return true;
 780     }
 781     else
 782     {
 783         return false;
 784     }
 785 }
 786 // ----------------------------------------------------------------------------
 787 // RTTI
 788 // ----------------------------------------------------------------------------
 789
 790 bool wxWindowBase::IsTopLevel() const
 791 {
 792     return false;
 793 }
 794
 795 // ----------------------------------------------------------------------------
 796 // reparenting the window
 797 // ----------------------------------------------------------------------------
 798
 799 void wxWindowBase::AddChild(wxWindowBase *child)
 800 {
 801     wxCHECK_RET( child, wxT("can't add a NULL child") );
 802
 803     // this should never happen and it will lead to a crash later if it does
 804     // because RemoveChild() will remove only one node from the children list
 805     // and the other(s) one(s) will be left with dangling pointers in them
 806     wxASSERT_MSG( !GetChildren().Find((wxWindow*)child), _T("AddChild() called twice") );
 807
 808     GetChildren().Append((wxWindow*)child);
 809     child->SetParent(this);
 810 }
 811
 812 void wxWindowBase::RemoveChild(wxWindowBase *child)
 813 {
 814     wxCHECK_RET( child, wxT("can't remove a NULL child") );
 815
 816     GetChildren().DeleteObject((wxWindow *)child);
 817     child->SetParent(NULL);
 818 }
 819
 820 bool wxWindowBase::Reparent(wxWindowBase *newParent)
 821 {
 822     wxWindow *oldParent = GetParent();
 823     if ( newParent == oldParent )
 824     {
 825         // nothing done
 826         return false;
 827     }
 828
 829     // unlink this window from the existing parent.
 830     if ( oldParent )
 831     {
 832         oldParent->RemoveChild(this);
 833     }
 834     else
 835     {
 836         wxTopLevelWindows.DeleteObject((wxWindow *)this);
 837     }
 838
 839     // add it to the new one
 840     if ( newParent )
 841     {
 842         newParent->AddChild(this);
 843     }
 844     else
 845     {
 846         wxTopLevelWindows.Append((wxWindow *)this);
 847     }
 848
 849     return true;
 850 }
 851
 852 // ----------------------------------------------------------------------------
 853 // event handler stuff
 854 // ----------------------------------------------------------------------------
 855
 856 void wxWindowBase::PushEventHandler(wxEvtHandler *handler)
 857 {
 858     wxEvtHandler *handlerOld = GetEventHandler();
 859
 860     handler->SetNextHandler(handlerOld);
 861
 862     if ( handlerOld )
 863         GetEventHandler()->SetPreviousHandler(handler);
 864
 865     SetEventHandler(handler);
 866 }
 867
 868 wxEvtHandler *wxWindowBase::PopEventHandler(bool deleteHandler)
 869 {
 870     wxEvtHandler *handlerA = GetEventHandler();
 871     if ( handlerA )
 872     {
 873         wxEvtHandler *handlerB = handlerA->GetNextHandler();
 874         handlerA->SetNextHandler((wxEvtHandler *)NULL);
 875
 876         if ( handlerB )
 877             handlerB->SetPreviousHandler((wxEvtHandler *)NULL);
 878         SetEventHandler(handlerB);
 879
 880         if ( deleteHandler )
 881         {
 882             delete handlerA;
 883             handlerA = (wxEvtHandler *)NULL;
 884         }
 885     }
 886
 887     return handlerA;
 888 }
 889
 890 bool wxWindowBase::RemoveEventHandler(wxEvtHandler *handler)
 891 {
 892     wxCHECK_MSG( handler, false, _T("RemoveEventHandler(NULL) called") );
 893
 894     wxEvtHandler *handlerPrev = NULL,
 895                  *handlerCur = GetEventHandler();
 896     while ( handlerCur )
 897     {
 898         wxEvtHandler *handlerNext = handlerCur->GetNextHandler();
 899
 900         if ( handlerCur == handler )
 901         {
 902             if ( handlerPrev )
 903             {
 904                 handlerPrev->SetNextHandler(handlerNext);
 905             }
 906             else
 907             {
 908                 SetEventHandler(handlerNext);
 909             }
 910
 911             if ( handlerNext )
 912             {
 913                 handlerNext->SetPreviousHandler ( handlerPrev );
 914             }
 915
 916             handler->SetNextHandler(NULL);
 917             handler->SetPreviousHandler(NULL);
 918
 919             return true;
 920         }
 921
 922         handlerPrev = handlerCur;
 923         handlerCur = handlerNext;
 924     }
 925
 926     wxFAIL_MSG( _T("where has the event handler gone?") );
 927
 928     return false;
 929 }
 930
 931 // ----------------------------------------------------------------------------
 932 // colours, fonts &c
 933 // ----------------------------------------------------------------------------
 934
 935 void wxWindowBase::InheritAttributes()
 936 {
 937     const wxWindowBase * const parent = GetParent();
 938     if ( !parent )
 939         return;
 940
 941     // we only inherit attributes which had been explicitly set for the parent
 942     // which ensures that this only happens if the user really wants it and
 943     // not by default which wouldn't make any sense in modern GUIs where the
 944     // controls don't all use the same fonts (nor colours)
 945     if ( parent->m_hasFont && !m_hasFont )
 946         SetFont(parent->GetFont());
 947
 948     // in addition, there is a possibility to explicitly forbid inheriting
 949     // colours at each class level by overriding ShouldInheritColours()
 950     if ( ShouldInheritColours() )
 951     {
 952         if ( parent->m_hasFgCol && !m_hasFgCol )
 953             SetForegroundColour(parent->GetForegroundColour());
 954
 955         if ( parent->m_hasBgCol && !m_hasBgCol )
 956             SetBackgroundColour(parent->GetBackgroundColour());
 957     }
 958 }
 959
 960 /* static */ wxVisualAttributes
 961 wxWindowBase::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 962 {
 963     // it is important to return valid values for all attributes from here,
 964     // GetXXX() below rely on this
 965     wxVisualAttributes attrs;
 966     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
 967     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
 968     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
 969
 970     return attrs;
 971 }
 972
 973 wxColour wxWindowBase::GetBackgroundColour() const
 974 {
 975     if ( !m_backgroundColour.Ok() )
 976     {
 977         wxASSERT_MSG( !m_hasBgCol, _T("we have invalid explicit bg colour?") );
 978
 979         // get our default background colour
 980         wxColour colBg = GetDefaultAttributes().colBg;
 981
 982         // we must return some valid colour to avoid redoing this every time
 983         // and also to avoid surprizing the applications written for older
 984         // wxWidgets versions where GetBackgroundColour() always returned
 985         // something -- so give them something even if it doesn't make sense
 986         // for this window (e.g. it has a themed background)
 987         if ( !colBg.Ok() )
 988             colBg = GetClassDefaultAttributes().colBg;
 989
 990         return colBg;
 991     }
 992     else
 993         return m_backgroundColour;
 994 }
 995
 996 wxColour wxWindowBase::GetForegroundColour() const
 997 {
 998     // logic is the same as above
 999     if ( !m_hasFgCol && !m_foregroundColour.Ok() )
1000     {
1001         wxASSERT_MSG( !m_hasFgCol, _T("we have invalid explicit fg colour?") );
1002
1003         wxColour colFg = GetDefaultAttributes().colFg;
1004
1005         if ( !colFg.Ok() )
1006             colFg = GetClassDefaultAttributes().colFg;
1007
1008         return colFg;
1009     }
1010     else
1011         return m_foregroundColour;
1012 }
1013
1014 bool wxWindowBase::SetBackgroundColour( const wxColour &colour )
1015 {
1016     if ( colour == m_backgroundColour )
1017         return false;
1018
1019     m_hasBgCol = colour.Ok();
1020     m_backgroundColour = colour;
1021     SetThemeEnabled( !m_hasBgCol && !m_foregroundColour.Ok() );
1022     return true;
1023 }
1024
1025 bool wxWindowBase::SetForegroundColour( const wxColour &colour )
1026 {
1027     if (colour == m_foregroundColour )
1028         return false;
1029
1030     m_hasFgCol = colour.Ok();
1031     m_foregroundColour = colour;
1032     SetThemeEnabled( !m_hasFgCol && !m_backgroundColour.Ok() );
1033     return true;
1034 }
1035
1036 bool wxWindowBase::SetCursor(const wxCursor& cursor)
1037 {
1038     // setting an invalid cursor is ok, it means that we don't have any special
1039     // cursor
1040     if ( m_cursor == cursor )
1041     {
1042         // no change
1043         return false;
1044     }
1045
1046     m_cursor = cursor;
1047
1048     return true;
1049 }
1050
1051 wxFont wxWindowBase::GetFont() const
1052 {
1053     // logic is the same as in GetBackgroundColour()
1054     if ( !m_font.Ok() )
1055     {
1056         wxASSERT_MSG( !m_hasFont, _T("we have invalid explicit font?") );
1057
1058         wxFont font = GetDefaultAttributes().font;
1059         if ( !font.Ok() )
1060             font = GetClassDefaultAttributes().font;
1061
1062         return font;
1063     }
1064     else
1065         return m_font;
1066 }
1067
1068 bool wxWindowBase::SetFont(const wxFont& font)
1069 {
1070     if ( font == m_font )
1071     {
1072         // no change
1073         return false;
1074     }
1075
1076     m_font = font;
1077     m_hasFont = font.Ok();
1078
1079     return true;
1080 }
1081
1082 #if wxUSE_PALETTE
1083
1084 void wxWindowBase::SetPalette(const wxPalette& pal)
1085 {
1086     m_hasCustomPalette = true;
1087     m_palette = pal;
1088
1089     // VZ: can anyone explain me what do we do here?
1090     wxWindowDC d((wxWindow *) this);
1091     d.SetPalette(pal);
1092 }
1093
1094 wxWindow *wxWindowBase::GetAncestorWithCustomPalette() const
1095 {
1096     wxWindow *win = (wxWindow *)this;
1097     while ( win && !win->HasCustomPalette() )
1098     {
1099         win = win->GetParent();
1100     }
1101
1102     return win;
1103 }
1104
1105 #endif // wxUSE_PALETTE
1106
1107 #if wxUSE_CARET
1108 void wxWindowBase::SetCaret(wxCaret *caret)
1109 {
1110     if ( m_caret )
1111     {
1112         delete m_caret;
1113     }
1114
1115     m_caret = caret;
1116
1117     if ( m_caret )
1118     {
1119         wxASSERT_MSG( m_caret->GetWindow() == this,
1120                       wxT("caret should be created associated to this window") );
1121     }
1122 }
1123 #endif // wxUSE_CARET
1124
1125 #if wxUSE_VALIDATORS
1126 // ----------------------------------------------------------------------------
1127 // validators
1128 // ----------------------------------------------------------------------------
1129
1130 void wxWindowBase::SetValidator(const wxValidator& validator)
1131 {
1132     if ( m_windowValidator )
1133         delete m_windowValidator;
1134
1135     m_windowValidator = (wxValidator *)validator.Clone();
1136
1137     if ( m_windowValidator )
1138         m_windowValidator->SetWindow(this);
1139 }
1140 #endif // wxUSE_VALIDATORS
1141
1142 // ----------------------------------------------------------------------------
1143 // update region stuff
1144 // ----------------------------------------------------------------------------
1145
1146 wxRect wxWindowBase::GetUpdateClientRect() const
1147 {
1148     wxRegion rgnUpdate = GetUpdateRegion();
1149     rgnUpdate.Intersect(GetClientRect());
1150     wxRect rectUpdate = rgnUpdate.GetBox();
1151     wxPoint ptOrigin = GetClientAreaOrigin();
1152     rectUpdate.x -= ptOrigin.x;
1153     rectUpdate.y -= ptOrigin.y;
1154
1155     return rectUpdate;
1156 }
1157
1158 bool wxWindowBase::IsExposed(int x, int y) const
1159 {
1160     return m_updateRegion.Contains(x, y) != wxOutRegion;
1161 }
1162
1163 bool wxWindowBase::IsExposed(int x, int y, int w, int h) const
1164 {
1165     return m_updateRegion.Contains(x, y, w, h) != wxOutRegion;
1166 }
1167
1168 void wxWindowBase::ClearBackground()
1169 {
1170     // wxGTK uses its own version, no need to add never used code
1171 #ifndef __WXGTK__
1172     wxClientDC dc((wxWindow *)this);
1173     wxBrush brush(GetBackgroundColour(), wxSOLID);
1174     dc.SetBackground(brush);
1175     dc.Clear();
1176 #endif // __WXGTK__
1177 }
1178
1179 // ----------------------------------------------------------------------------
1180 // find child window by id or name
1181 // ----------------------------------------------------------------------------
1182
1183 wxWindow *wxWindowBase::FindWindow( long id )
1184 {
1185     if ( id == m_windowId )
1186         return (wxWindow *)this;
1187
1188     wxWindowBase *res = (wxWindow *)NULL;
1189     wxWindowList::compatibility_iterator node;
1190     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1191     {
1192         wxWindowBase *child = node->GetData();
1193         res = child->FindWindow( id );
1194     }
1195
1196     return (wxWindow *)res;
1197 }
1198
1199 wxWindow *wxWindowBase::FindWindow( const wxString& name )
1200 {
1201     if ( name == m_windowName )
1202         return (wxWindow *)this;
1203
1204     wxWindowBase *res = (wxWindow *)NULL;
1205     wxWindowList::compatibility_iterator node;
1206     for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
1207     {
1208         wxWindow *child = node->GetData();
1209         res = child->FindWindow(name);
1210     }
1211
1212     return (wxWindow *)res;
1213 }
1214
1215
1216 // find any window by id or name or label: If parent is non-NULL, look through
1217 // children for a label or title matching the specified string. If NULL, look
1218 // through all top-level windows.
1219 //
1220 // to avoid duplicating code we reuse the same helper function but with
1221 // different comparators
1222
1223 typedef bool (*wxFindWindowCmp)(const wxWindow *win,
1224                                 const wxString& label, long id);
1225
1226 static
1227 bool wxFindWindowCmpLabels(const wxWindow *win, const wxString& label,
1228                            long WXUNUSED(id))
1229 {
1230     return win->GetLabel() == label;
1231 }
1232
1233 static
1234 bool wxFindWindowCmpNames(const wxWindow *win, const wxString& label,
1235                           long WXUNUSED(id))
1236 {
1237     return win->GetName() == label;
1238 }
1239
1240 static
1241 bool wxFindWindowCmpIds(const wxWindow *win, const wxString& WXUNUSED(label),
1242                         long id)
1243 {
1244     return win->GetId() == id;
1245 }
1246
1247 // recursive helper for the FindWindowByXXX() functions
1248 static
1249 wxWindow *wxFindWindowRecursively(const wxWindow *parent,
1250                                   const wxString& label,
1251                                   long id,
1252                                   wxFindWindowCmp cmp)
1253 {
1254     if ( parent )
1255     {
1256         // see if this is the one we're looking for
1257         if ( (*cmp)(parent, label, id) )
1258             return (wxWindow *)parent;
1259
1260         // It wasn't, so check all its children
1261         for ( wxWindowList::compatibility_iterator node = parent->GetChildren().GetFirst();
1262               node;
1263               node = node->GetNext() )
1264         {
1265             // recursively check each child
1266             wxWindow *win = (wxWindow *)node->GetData();
1267             wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1268             if (retwin)
1269                 return retwin;
1270         }
1271     }
1272
1273     // Not found
1274     return NULL;
1275 }
1276
1277 // helper for FindWindowByXXX()
1278 static
1279 wxWindow *wxFindWindowHelper(const wxWindow *parent,
1280                              const wxString& label,
1281                              long id,
1282                              wxFindWindowCmp cmp)
1283 {
1284     if ( parent )
1285     {
1286         // just check parent and all its children
1287         return wxFindWindowRecursively(parent, label, id, cmp);
1288     }
1289
1290     // start at very top of wx's windows
1291     for ( wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1292           node;
1293           node = node->GetNext() )
1294     {
1295         // recursively check each window & its children
1296         wxWindow *win = node->GetData();
1297         wxWindow *retwin = wxFindWindowRecursively(win, label, id, cmp);
1298         if (retwin)
1299             return retwin;
1300     }
1301
1302     return NULL;
1303 }
1304
1305 /* static */
1306 wxWindow *
1307 wxWindowBase::FindWindowByLabel(const wxString& title, const wxWindow *parent)
1308 {
1309     return wxFindWindowHelper(parent, title, 0, wxFindWindowCmpLabels);
1310 }
1311
1312 /* static */
1313 wxWindow *
1314 wxWindowBase::FindWindowByName(const wxString& title, const wxWindow *parent)
1315 {
1316     wxWindow *win = wxFindWindowHelper(parent, title, 0, wxFindWindowCmpNames);
1317
1318     if ( !win )
1319     {
1320         // fall back to the label
1321         win = FindWindowByLabel(title, parent);
1322     }
1323
1324     return win;
1325 }
1326
1327 /* static */
1328 wxWindow *
1329 wxWindowBase::FindWindowById( long id, const wxWindow* parent )
1330 {
1331     return wxFindWindowHelper(parent, _T(""), id, wxFindWindowCmpIds);
1332 }
1333
1334 // ----------------------------------------------------------------------------
1335 // dialog oriented functions
1336 // ----------------------------------------------------------------------------
1337
1338 void wxWindowBase::MakeModal(bool modal)
1339 {
1340     // Disable all other windows
1341     if ( IsTopLevel() )
1342     {
1343         wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
1344         while (node)
1345         {
1346             wxWindow *win = node->GetData();
1347             if (win != this)
1348                 win->Enable(!modal);
1349
1350             node = node->GetNext();
1351         }
1352     }
1353 }
1354
1355 bool wxWindowBase::Validate()
1356 {
1357 #if wxUSE_VALIDATORS
1358     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1359
1360     wxWindowList::compatibility_iterator node;
1361     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1362     {
1363         wxWindowBase *child = node->GetData();
1364         wxValidator *validator = child->GetValidator();
1365         if ( validator && !validator->Validate((wxWindow *)this) )
1366         {
1367             return false;
1368         }
1369
1370         if ( recurse && !child->Validate() )
1371         {
1372             return false;
1373         }
1374     }
1375 #endif // wxUSE_VALIDATORS
1376
1377     return true;
1378 }
1379
1380 bool wxWindowBase::TransferDataToWindow()
1381 {
1382 #if wxUSE_VALIDATORS
1383     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1384
1385     wxWindowList::compatibility_iterator node;
1386     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1387     {
1388         wxWindowBase *child = node->GetData();
1389         wxValidator *validator = child->GetValidator();
1390         if ( validator && !validator->TransferToWindow() )
1391         {
1392             wxLogWarning(_("Could not transfer data to window"));
1393 #if wxUSE_LOG
1394             wxLog::FlushActive();
1395 #endif // wxUSE_LOG
1396
1397             return false;
1398         }
1399
1400         if ( recurse )
1401         {
1402             if ( !child->TransferDataToWindow() )
1403             {
1404                 // warning already given
1405                 return false;
1406             }
1407         }
1408     }
1409 #endif // wxUSE_VALIDATORS
1410
1411     return true;
1412 }
1413
1414 bool wxWindowBase::TransferDataFromWindow()
1415 {
1416 #if wxUSE_VALIDATORS
1417     bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
1418
1419     wxWindowList::compatibility_iterator node;
1420     for ( node = m_children.GetFirst(); node; node = node->GetNext() )
1421     {
1422         wxWindow *child = node->GetData();
1423         wxValidator *validator = child->GetValidator();
1424         if ( validator && !validator->TransferFromWindow() )
1425         {
1426             // nop warning here because the application is supposed to give
1427             // one itself - we don't know here what might have gone wrongly
1428
1429             return false;
1430         }
1431
1432         if ( recurse )
1433         {
1434             if ( !child->TransferDataFromWindow() )
1435             {
1436                 // warning already given
1437                 return false;
1438             }
1439         }
1440     }
1441 #endif // wxUSE_VALIDATORS
1442
1443     return true;
1444 }
1445
1446 void wxWindowBase::InitDialog()
1447 {
1448     wxInitDialogEvent event(GetId());
1449     event.SetEventObject( this );
1450     GetEventHandler()->ProcessEvent(event);
1451 }
1452
1453 // ----------------------------------------------------------------------------
1454 // context-sensitive help support
1455 // ----------------------------------------------------------------------------
1456
1457 #if wxUSE_HELP
1458
1459 // associate this help text with this window
1460 void wxWindowBase::SetHelpText(const wxString& text)
1461 {
1462     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1463     if ( helpProvider )
1464     {
1465         helpProvider->AddHelp(this, text);
1466     }
1467 }
1468
1469 // associate this help text with all windows with the same id as this
1470 // one
1471 void wxWindowBase::SetHelpTextForId(const wxString& text)
1472 {
1473     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1474     if ( helpProvider )
1475     {
1476         helpProvider->AddHelp(GetId(), text);
1477     }
1478 }
1479
1480 // get the help string associated with this window (may be empty)
1481 wxString wxWindowBase::GetHelpText() const
1482 {
1483     wxString text;
1484     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1485     if ( helpProvider )
1486     {
1487         text = helpProvider->GetHelp(this);
1488     }
1489
1490     return text;
1491 }
1492
1493 // show help for this window
1494 void wxWindowBase::OnHelp(wxHelpEvent& event)
1495 {
1496     wxHelpProvider *helpProvider = wxHelpProvider::Get();
1497     if ( helpProvider )
1498     {
1499         if ( helpProvider->ShowHelp(this) )
1500         {
1501             // skip the event.Skip() below
1502             return;
1503         }
1504     }
1505
1506     event.Skip();
1507 }
1508
1509 #endif // wxUSE_HELP
1510
1511 // ----------------------------------------------------------------------------
1512 // tooltipsroot.Replace("\\", "/");
1513 // ----------------------------------------------------------------------------
1514
1515 #if wxUSE_TOOLTIPS
1516
1517 void wxWindowBase::SetToolTip( const wxString &tip )
1518 {
1519     // don't create the new tooltip if we already have one
1520     if ( m_tooltip )
1521     {
1522         m_tooltip->SetTip( tip );
1523     }
1524     else
1525     {
1526         SetToolTip( new wxToolTip( tip ) );
1527     }
1528
1529     // setting empty tooltip text does not remove the tooltip any more - use
1530     // SetToolTip((wxToolTip *)NULL) for this
1531 }
1532
1533 void wxWindowBase::DoSetToolTip(wxToolTip *tooltip)
1534 {
1535     if ( m_tooltip )
1536         delete m_tooltip;
1537
1538     m_tooltip = tooltip;
1539 }
1540
1541 #endif // wxUSE_TOOLTIPS
1542
1543 // ----------------------------------------------------------------------------
1544 // constraints and sizers
1545 // ----------------------------------------------------------------------------
1546
1547 #if wxUSE_CONSTRAINTS
1548
1549 void wxWindowBase::SetConstraints( wxLayoutConstraints *constraints )
1550 {
1551     if ( m_constraints )
1552     {
1553         UnsetConstraints(m_constraints);
1554         delete m_constraints;
1555     }
1556     m_constraints = constraints;
1557     if ( m_constraints )
1558     {
1559         // Make sure other windows know they're part of a 'meaningful relationship'
1560         if ( m_constraints->left.GetOtherWindow() && (m_constraints->left.GetOtherWindow() != this) )
1561             m_constraints->left.GetOtherWindow()->AddConstraintReference(this);
1562         if ( m_constraints->top.GetOtherWindow() && (m_constraints->top.GetOtherWindow() != this) )
1563             m_constraints->top.GetOtherWindow()->AddConstraintReference(this);
1564         if ( m_constraints->right.GetOtherWindow() && (m_constraints->right.GetOtherWindow() != this) )
1565             m_constraints->right.GetOtherWindow()->AddConstraintReference(this);
1566         if ( m_constraints->bottom.GetOtherWindow() && (m_constraints->bottom.GetOtherWindow() != this) )
1567             m_constraints->bottom.GetOtherWindow()->AddConstraintReference(this);
1568         if ( m_constraints->width.GetOtherWindow() && (m_constraints->width.GetOtherWindow() != this) )
1569             m_constraints->width.GetOtherWindow()->AddConstraintReference(this);
1570         if ( m_constraints->height.GetOtherWindow() && (m_constraints->height.GetOtherWindow() != this) )
1571             m_constraints->height.GetOtherWindow()->AddConstraintReference(this);
1572         if ( m_constraints->centreX.GetOtherWindow() && (m_constraints->centreX.GetOtherWindow() != this) )
1573             m_constraints->centreX.GetOtherWindow()->AddConstraintReference(this);
1574         if ( m_constraints->centreY.GetOtherWindow() && (m_constraints->centreY.GetOtherWindow() != this) )
1575             m_constraints->centreY.GetOtherWindow()->AddConstraintReference(this);
1576     }
1577 }
1578
1579 // This removes any dangling pointers to this window in other windows'
1580 // constraintsInvolvedIn lists.
1581 void wxWindowBase::UnsetConstraints(wxLayoutConstraints *c)
1582 {
1583     if ( c )
1584     {
1585         if ( c->left.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1586             c->left.GetOtherWindow()->RemoveConstraintReference(this);
1587         if ( c->top.GetOtherWindow() && (c->top.GetOtherWindow() != this) )
1588             c->top.GetOtherWindow()->RemoveConstraintReference(this);
1589         if ( c->right.GetOtherWindow() && (c->right.GetOtherWindow() != this) )
1590             c->right.GetOtherWindow()->RemoveConstraintReference(this);
1591         if ( c->bottom.GetOtherWindow() && (c->bottom.GetOtherWindow() != this) )
1592             c->bottom.GetOtherWindow()->RemoveConstraintReference(this);
1593         if ( c->width.GetOtherWindow() && (c->width.GetOtherWindow() != this) )
1594             c->width.GetOtherWindow()->RemoveConstraintReference(this);
1595         if ( c->height.GetOtherWindow() && (c->height.GetOtherWindow() != this) )
1596             c->height.GetOtherWindow()->RemoveConstraintReference(this);
1597         if ( c->centreX.GetOtherWindow() && (c->centreX.GetOtherWindow() != this) )
1598             c->centreX.GetOtherWindow()->RemoveConstraintReference(this);
1599         if ( c->centreY.GetOtherWindow() && (c->centreY.GetOtherWindow() != this) )
1600             c->centreY.GetOtherWindow()->RemoveConstraintReference(this);
1601     }
1602 }
1603
1604 // Back-pointer to other windows we're involved with, so if we delete this
1605 // window, we must delete any constraints we're involved with.
1606 void wxWindowBase::AddConstraintReference(wxWindowBase *otherWin)
1607 {
1608     if ( !m_constraintsInvolvedIn )
1609         m_constraintsInvolvedIn = new wxWindowList;
1610     if ( !m_constraintsInvolvedIn->Find((wxWindow *)otherWin) )
1611         m_constraintsInvolvedIn->Append((wxWindow *)otherWin);
1612 }
1613
1614 // REMOVE back-pointer to other windows we're involved with.
1615 void wxWindowBase::RemoveConstraintReference(wxWindowBase *otherWin)
1616 {
1617     if ( m_constraintsInvolvedIn )
1618         m_constraintsInvolvedIn->DeleteObject((wxWindow *)otherWin);
1619 }
1620
1621 // Reset any constraints that mention this window
1622 void wxWindowBase::DeleteRelatedConstraints()
1623 {
1624     if ( m_constraintsInvolvedIn )
1625     {
1626         wxWindowList::compatibility_iterator node = m_constraintsInvolvedIn->GetFirst();
1627         while (node)
1628         {
1629             wxWindow *win = node->GetData();
1630             wxLayoutConstraints *constr = win->GetConstraints();
1631
1632             // Reset any constraints involving this window
1633             if ( constr )
1634             {
1635                 constr->left.ResetIfWin(this);
1636                 constr->top.ResetIfWin(this);
1637                 constr->right.ResetIfWin(this);
1638                 constr->bottom.ResetIfWin(this);
1639                 constr->width.ResetIfWin(this);
1640                 constr->height.ResetIfWin(this);
1641                 constr->centreX.ResetIfWin(this);
1642                 constr->centreY.ResetIfWin(this);
1643             }
1644
1645             wxWindowList::compatibility_iterator next = node->GetNext();
1646             m_constraintsInvolvedIn->Erase(node);
1647             node = next;
1648         }
1649
1650         delete m_constraintsInvolvedIn;
1651         m_constraintsInvolvedIn = (wxWindowList *) NULL;
1652     }
1653 }
1654
1655 #endif // wxUSE_CONSTRAINTS
1656
1657 void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
1658 {
1659     if ( sizer == m_windowSizer)
1660         return;
1661
1662     if ( deleteOld )
1663         delete m_windowSizer;
1664
1665     m_windowSizer = sizer;
1666
1667     SetAutoLayout( sizer != NULL );
1668 }
1669
1670 void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
1671 {
1672     SetSizer( sizer, deleteOld );
1673     sizer->SetSizeHints( (wxWindow*) this );
1674 }
1675
1676
1677 void wxWindowBase::SetContainingSizer(wxSizer* sizer)
1678 {
1679     // adding a window to a sizer twice is going to result in fatal and
1680     // hard to debug problems later because when deleting the second
1681     // associated wxSizerItem we're going to dereference a dangling
1682     // pointer; so try to detect this as early as possible
1683     wxASSERT_MSG( !sizer || m_containingSizer != sizer,
1684                   _T("Adding a window to the same sizer twice?") );
1685
1686     m_containingSizer = sizer;
1687 }
1688
1689 #if wxUSE_CONSTRAINTS
1690
1691 void wxWindowBase::SatisfyConstraints()
1692 {
1693     wxLayoutConstraints *constr = GetConstraints();
1694     bool wasOk = constr && constr->AreSatisfied();
1695
1696     ResetConstraints();   // Mark all constraints as unevaluated
1697
1698     int noChanges = 1;
1699
1700     // if we're a top level panel (i.e. our parent is frame/dialog), our
1701     // own constraints will never be satisfied any more unless we do it
1702     // here
1703     if ( wasOk )
1704     {
1705         while ( noChanges > 0 )
1706         {
1707             LayoutPhase1(&noChanges);
1708         }
1709     }
1710
1711     LayoutPhase2(&noChanges);
1712 }
1713
1714 #endif // wxUSE_CONSTRAINTS
1715
1716 bool wxWindowBase::Layout()
1717 {
1718     // If there is a sizer, use it instead of the constraints
1719     if ( GetSizer() )
1720     {
1721         int w, h;
1722         GetVirtualSize(&w, &h);
1723         GetSizer()->SetDimension( 0, 0, w, h );
1724     }
1725 #if wxUSE_CONSTRAINTS
1726     else
1727     {
1728         SatisfyConstraints(); // Find the right constraints values
1729         SetConstraintSizes(); // Recursively set the real window sizes
1730     }
1731 #endif
1732
1733     return true;
1734 }
1735
1736 #if wxUSE_CONSTRAINTS
1737
1738 // first phase of the constraints evaluation: set our own constraints
1739 bool wxWindowBase::LayoutPhase1(int *noChanges)
1740 {
1741     wxLayoutConstraints *constr = GetConstraints();
1742
1743     return !constr || constr->SatisfyConstraints(this, noChanges);
1744 }
1745
1746 // second phase: set the constraints for our children
1747 bool wxWindowBase::LayoutPhase2(int *noChanges)
1748 {
1749     *noChanges = 0;
1750
1751     // Layout children
1752     DoPhase(1);
1753
1754     // Layout grand children
1755     DoPhase(2);
1756
1757     return true;
1758 }
1759
1760 // Do a phase of evaluating child constraints
1761 bool wxWindowBase::DoPhase(int phase)
1762 {
1763     // the list containing the children for which the constraints are already
1764     // set correctly
1765     wxWindowList succeeded;
1766
1767     // the max number of iterations we loop before concluding that we can't set
1768     // the constraints
1769     static const int maxIterations = 500;
1770
1771     for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
1772     {
1773         int noChanges = 0;
1774
1775         // loop over all children setting their constraints
1776         for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1777               node;
1778               node = node->GetNext() )
1779         {
1780             wxWindow *child = node->GetData();
1781             if ( child->IsTopLevel() )
1782             {
1783                 // top level children are not inside our client area
1784                 continue;
1785             }
1786
1787             if ( !child->GetConstraints() || succeeded.Find(child) )
1788             {
1789                 // this one is either already ok or nothing we can do about it
1790                 continue;
1791             }
1792
1793             int tempNoChanges = 0;
1794             bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
1795                                       : child->LayoutPhase2(&tempNoChanges);
1796             noChanges += tempNoChanges;
1797
1798             if ( success )
1799             {
1800                 succeeded.Append(child);
1801             }
1802         }
1803
1804         if ( !noChanges )
1805         {
1806             // constraints are set
1807             break;
1808         }
1809     }
1810
1811     return true;
1812 }
1813
1814 void wxWindowBase::ResetConstraints()
1815 {
1816     wxLayoutConstraints *constr = GetConstraints();
1817     if ( constr )
1818     {
1819         constr->left.SetDone(false);
1820         constr->top.SetDone(false);
1821         constr->right.SetDone(false);
1822         constr->bottom.SetDone(false);
1823         constr->width.SetDone(false);
1824         constr->height.SetDone(false);
1825         constr->centreX.SetDone(false);
1826         constr->centreY.SetDone(false);
1827     }
1828
1829     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1830     while (node)
1831     {
1832         wxWindow *win = node->GetData();
1833         if ( !win->IsTopLevel() )
1834             win->ResetConstraints();
1835         node = node->GetNext();
1836     }
1837 }
1838
1839 // Need to distinguish between setting the 'fake' size for windows and sizers,
1840 // and setting the real values.
1841 void wxWindowBase::SetConstraintSizes(bool recurse)
1842 {
1843     wxLayoutConstraints *constr = GetConstraints();
1844     if ( constr && constr->AreSatisfied() )
1845     {
1846         int x = constr->left.GetValue();
1847         int y = constr->top.GetValue();
1848         int w = constr->width.GetValue();
1849         int h = constr->height.GetValue();
1850
1851         if ( (constr->width.GetRelationship() != wxAsIs ) ||
1852              (constr->height.GetRelationship() != wxAsIs) )
1853         {
1854             SetSize(x, y, w, h);
1855         }
1856         else
1857         {
1858             // If we don't want to resize this window, just move it...
1859             Move(x, y);
1860         }
1861     }
1862     else if ( constr )
1863     {
1864         wxLogDebug(wxT("Constraints not satisfied for %s named '%s'."),
1865                    GetClassInfo()->GetClassName(),
1866                    GetName().c_str());
1867     }
1868
1869     if ( recurse )
1870     {
1871         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
1872         while (node)
1873         {
1874             wxWindow *win = node->GetData();
1875             if ( !win->IsTopLevel() && win->GetConstraints() )
1876                 win->SetConstraintSizes();
1877             node = node->GetNext();
1878         }
1879     }
1880 }
1881
1882 // Only set the size/position of the constraint (if any)
1883 void wxWindowBase::SetSizeConstraint(int x, int y, int w, int h)
1884 {
1885     wxLayoutConstraints *constr = GetConstraints();
1886     if ( constr )
1887     {
1888         if ( x != wxDefaultPosition.x )
1889         {
1890             constr->left.SetValue(x);
1891             constr->left.SetDone(true);
1892         }
1893         if ( y != wxDefaultPosition.y )
1894         {
1895             constr->top.SetValue(y);
1896             constr->top.SetDone(true);
1897         }
1898         if ( w != wxDefaultSize.x )
1899         {
1900             constr->width.SetValue(w);
1901             constr->width.SetDone(true);
1902         }
1903         if ( h != wxDefaultSize.y )
1904         {
1905             constr->height.SetValue(h);
1906             constr->height.SetDone(true);
1907         }
1908     }
1909 }
1910
1911 void wxWindowBase::MoveConstraint(int x, int y)
1912 {
1913     wxLayoutConstraints *constr = GetConstraints();
1914     if ( constr )
1915     {
1916         if ( x != wxDefaultPosition.x )
1917         {
1918             constr->left.SetValue(x);
1919             constr->left.SetDone(true);
1920         }
1921         if ( y != wxDefaultPosition.y )
1922         {
1923             constr->top.SetValue(y);
1924             constr->top.SetDone(true);
1925         }
1926     }
1927 }
1928
1929 void wxWindowBase::GetSizeConstraint(int *w, int *h) const
1930 {
1931     wxLayoutConstraints *constr = GetConstraints();
1932     if ( constr )
1933     {
1934         *w = constr->width.GetValue();
1935         *h = constr->height.GetValue();
1936     }
1937     else
1938         GetSize(w, h);
1939 }
1940
1941 void wxWindowBase::GetClientSizeConstraint(int *w, int *h) const
1942 {
1943     wxLayoutConstraints *constr = GetConstraints();
1944     if ( constr )
1945     {
1946         *w = constr->width.GetValue();
1947         *h = constr->height.GetValue();
1948     }
1949     else
1950         GetClientSize(w, h);
1951 }
1952
1953 void wxWindowBase::GetPositionConstraint(int *x, int *y) const
1954 {
1955     wxLayoutConstraints *constr = GetConstraints();
1956     if ( constr )
1957     {
1958         *x = constr->left.GetValue();
1959         *y = constr->top.GetValue();
1960     }
1961     else
1962         GetPosition(x, y);
1963 }
1964
1965 #endif // wxUSE_CONSTRAINTS
1966
1967 void wxWindowBase::AdjustForParentClientOrigin(int& x, int& y, int sizeFlags) const
1968 {
1969     // don't do it for the dialogs/frames - they float independently of their
1970     // parent
1971     if ( !IsTopLevel() )
1972     {
1973         wxWindow *parent = GetParent();
1974         if ( !(sizeFlags & wxSIZE_NO_ADJUSTMENTS) && parent )
1975         {
1976             wxPoint pt(parent->GetClientAreaOrigin());
1977             x += pt.x;
1978             y += pt.y;
1979         }
1980     }
1981 }
1982
1983 // ----------------------------------------------------------------------------
1984 // do Update UI processing for child controls
1985 // ----------------------------------------------------------------------------
1986
1987 void wxWindowBase::UpdateWindowUI(long flags)
1988 {
1989     wxUpdateUIEvent event(GetId());
1990     event.m_eventObject = this;
1991
1992     if ( GetEventHandler()->ProcessEvent(event) )
1993     {
1994         DoUpdateWindowUI(event);
1995     }
1996
1997     if (flags & wxUPDATE_UI_RECURSE)
1998     {
1999         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2000         while (node)
2001         {
2002             wxWindow* child = (wxWindow*) node->GetData();
2003             child->UpdateWindowUI(flags);
2004             node = node->GetNext();
2005         }
2006     }
2007 }
2008
2009 // do the window-specific processing after processing the update event
2010 // TODO: take specific knowledge out of this function and
2011 // put in each control's base class. Unfortunately we don't
2012 // yet have base implementation files for wxCheckBox and wxRadioButton.
2013 void wxWindowBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
2014 {
2015     if ( event.GetSetEnabled() )
2016         Enable(event.GetEnabled());
2017
2018 #if wxUSE_CONTROLS
2019     if ( event.GetSetText() )
2020     {
2021         wxControl *control = wxDynamicCastThis(wxControl);
2022         if ( control )
2023         {
2024             if ( event.GetText() != control->GetLabel() )
2025                 control->SetLabel(event.GetText());
2026         }
2027 #if wxUSE_CHECKBOX
2028         wxCheckBox *checkbox = wxDynamicCastThis(wxCheckBox);
2029         if ( checkbox )
2030         {
2031             if ( event.GetSetChecked() )
2032                 checkbox->SetValue(event.GetChecked());
2033         }
2034 #endif // wxUSE_CHECKBOX
2035
2036 #if wxUSE_RADIOBTN
2037         wxRadioButton *radiobtn = wxDynamicCastThis(wxRadioButton);
2038         if ( radiobtn )
2039         {
2040             if ( event.GetSetChecked() )
2041                 radiobtn->SetValue(event.GetChecked());
2042         }
2043 #endif // wxUSE_RADIOBTN
2044     }
2045 #endif
2046 }
2047
2048 #if 0
2049 // call internal idle recursively
2050 // may be obsolete (wait until OnIdle scheme stabilises)
2051 void wxWindowBase::ProcessInternalIdle()
2052 {
2053     OnInternalIdle();
2054
2055     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2056     while (node)
2057     {
2058         wxWindow *child = node->GetData();
2059         child->ProcessInternalIdle();
2060         node = node->GetNext();
2061     }
2062 }
2063 #endif
2064
2065 // ----------------------------------------------------------------------------
2066 // dialog units translations
2067 // ----------------------------------------------------------------------------
2068
2069 wxPoint wxWindowBase::ConvertPixelsToDialog(const wxPoint& pt)
2070 {
2071     int charWidth = GetCharWidth();
2072     int charHeight = GetCharHeight();
2073     wxPoint pt2(-1, -1);
2074     if (pt.x != -1)
2075         pt2.x = (int) ((pt.x * 4) / charWidth);
2076     if (pt.y != -1)
2077         pt2.y = (int) ((pt.y * 8) / charHeight);
2078
2079     return pt2;
2080 }
2081
2082 wxPoint wxWindowBase::ConvertDialogToPixels(const wxPoint& pt)
2083 {
2084     int charWidth = GetCharWidth();
2085     int charHeight = GetCharHeight();
2086     wxPoint pt2(-1, -1);
2087     if (pt.x != -1)
2088         pt2.x = (int) ((pt.x * charWidth) / 4);
2089     if (pt.y != -1)
2090         pt2.y = (int) ((pt.y * charHeight) / 8);
2091
2092     return pt2;
2093 }
2094
2095 // ----------------------------------------------------------------------------
2096 // event handlers
2097 // ----------------------------------------------------------------------------
2098
2099 // propagate the colour change event to the subwindows
2100 void wxWindowBase::OnSysColourChanged(wxSysColourChangedEvent& event)
2101 {
2102     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
2103     while ( node )
2104     {
2105         // Only propagate to non-top-level windows
2106         wxWindow *win = node->GetData();
2107         if ( !win->IsTopLevel() )
2108         {
2109             wxSysColourChangedEvent event2;
2110             event.m_eventObject = win;
2111             win->GetEventHandler()->ProcessEvent(event2);
2112         }
2113
2114         node = node->GetNext();
2115     }
2116
2117     Refresh();
2118 }
2119
2120 // the default action is to populate dialog with data when it's created,
2121 // and nudge the UI into displaying itself correctly in case
2122 // we've turned the wxUpdateUIEvents frequency down low.
2123 void wxWindowBase::OnInitDialog( wxInitDialogEvent &WXUNUSED(event) )
2124 {
2125     TransferDataToWindow();
2126
2127     // Update the UI at this point
2128     UpdateWindowUI(wxUPDATE_UI_RECURSE);
2129 }
2130
2131 // process Ctrl-Alt-mclick
2132 void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
2133 {
2134 #if wxUSE_MSGDLG
2135     if ( event.ControlDown() && event.AltDown() )
2136     {
2137         // don't translate these strings
2138         wxString port;
2139
2140 #ifdef __WXUNIVERSAL__
2141         port = _T("Univ/");
2142 #endif // __WXUNIVERSAL__
2143
2144         switch ( wxGetOsVersion() )
2145         {
2146             case wxMOTIF_X:     port += _T("Motif"); break;
2147             case wxMAC:
2148             case wxMAC_DARWIN:  port += _T("Mac"); break;
2149             case wxBEOS:        port += _T("BeOS"); break;
2150             case wxGTK:
2151             case wxGTK_WIN32:
2152             case wxGTK_OS2:
2153             case wxGTK_BEOS:    port += _T("GTK"); break;
2154             case wxWINDOWS:
2155             case wxPENWINDOWS:
2156             case wxWINDOWS_NT:
2157             case wxWIN32S:
2158             case wxWIN95:
2159             case wxWIN386:      port += _T("MS Windows"); break;
2160             case wxMGL_UNIX:
2161             case wxMGL_X:
2162             case wxMGL_WIN32:
2163             case wxMGL_OS2:     port += _T("MGL"); break;
2164             case wxWINDOWS_OS2:
2165             case wxOS2_PM:      port += _T("OS/2"); break;
2166             default:            port += _T("unknown"); break;
2167         }
2168
2169         wxMessageBox(wxString::Format(
2170                                       _T(
2171                                         "       wxWidgets Library (%s port)\nVersion %u.%u.%u%s, compiled at %s %s\n   Copyright (c) 1995-2002 wxWidgets team"
2172                                         ),
2173                                       port.c_str(),
2174                                       wxMAJOR_VERSION,
2175                                       wxMINOR_VERSION,
2176                                       wxRELEASE_NUMBER,
2177 #if wxUSE_UNICODE
2178                                       L" (Unicode)",
2179 #else
2180                                       "",
2181 #endif
2182                                       __TDATE__,
2183                                       __TTIME__
2184                                      ),
2185                      _T("wxWidgets information"),
2186                      wxICON_INFORMATION | wxOK,
2187                      (wxWindow *)this);
2188     }
2189     else
2190 #endif // wxUSE_MSGDLG
2191     {
2192         event.Skip();
2193     }
2194 }
2195
2196 // ----------------------------------------------------------------------------
2197 // accessibility
2198 // ----------------------------------------------------------------------------
2199
2200 #if wxUSE_ACCESSIBILITY
2201 void wxWindowBase::SetAccessible(wxAccessible* accessible)
2202 {
2203     if (m_accessible && (accessible != m_accessible))
2204         delete m_accessible;
2205     m_accessible = accessible;
2206     if (m_accessible)
2207         m_accessible->SetWindow((wxWindow*) this);
2208 }
2209
2210 // Returns the accessible object, creating if necessary.
2211 wxAccessible* wxWindowBase::GetOrCreateAccessible()
2212 {
2213     if (!m_accessible)
2214         m_accessible = CreateAccessible();
2215     return m_accessible;
2216 }
2217
2218 // Override to create a specific accessible object.
2219 wxAccessible* wxWindowBase::CreateAccessible()
2220 {
2221     return new wxWindowAccessible((wxWindow*) this);
2222 }
2223
2224 #endif
2225
2226 #if !wxUSE_STL
2227 // ----------------------------------------------------------------------------
2228 // list classes implementation
2229 // ----------------------------------------------------------------------------
2230
2231 void wxWindowListNode::DeleteData()
2232 {
2233     delete (wxWindow *)GetData();
2234 }
2235 #endif
2236
2237 // ----------------------------------------------------------------------------
2238 // borders
2239 // ----------------------------------------------------------------------------
2240
2241 wxBorder wxWindowBase::GetBorder(long flags) const
2242 {
2243     wxBorder border = (wxBorder)(flags & wxBORDER_MASK);
2244     if ( border == wxBORDER_DEFAULT )
2245     {
2246         border = GetDefaultBorder();
2247     }
2248
2249     return border;
2250 }
2251
2252 wxBorder wxWindowBase::GetDefaultBorder() const
2253 {
2254     return wxBORDER_NONE;
2255 }
2256
2257 // ----------------------------------------------------------------------------
2258 // hit testing
2259 // ----------------------------------------------------------------------------
2260
2261 wxHitTest wxWindowBase::DoHitTest(wxCoord x, wxCoord y) const
2262 {
2263     // here we just check if the point is inside the window or not
2264
2265     // check the top and left border first
2266     bool outside = x < 0 || y < 0;
2267     if ( !outside )
2268     {
2269         // check the right and bottom borders too
2270         wxSize size = GetSize();
2271         outside = x >= size.x || y >= size.y;
2272     }
2273
2274     return outside ? wxHT_WINDOW_OUTSIDE : wxHT_WINDOW_INSIDE;
2275 }
2276
2277 // ----------------------------------------------------------------------------
2278 // mouse capture
2279 // ----------------------------------------------------------------------------
2280
2281 struct WXDLLEXPORT wxWindowNext
2282 {
2283     wxWindow *win;
2284     wxWindowNext *next;
2285 } *wxWindowBase::ms_winCaptureNext = NULL;
2286
2287 void wxWindowBase::CaptureMouse()
2288 {
2289     wxLogTrace(_T("mousecapture"), _T("CaptureMouse(%p)"), this);
2290
2291     wxWindow *winOld = GetCapture();
2292     if ( winOld )
2293     {
2294         ((wxWindowBase*) winOld)->DoReleaseMouse();
2295
2296         // save it on stack
2297         wxWindowNext *item = new wxWindowNext;
2298         item->win = winOld;
2299         item->next = ms_winCaptureNext;
2300         ms_winCaptureNext = item;
2301     }
2302     //else: no mouse capture to save
2303
2304     DoCaptureMouse();
2305 }
2306
2307 void wxWindowBase::ReleaseMouse()
2308 {
2309     wxLogTrace(_T("mousecapture"), _T("ReleaseMouse(%p)"), this);
2310
2311     wxASSERT_MSG( GetCapture() == this, wxT("attempt to release mouse, but this window hasn't captured it") );
2312
2313     DoReleaseMouse();
2314
2315     if ( ms_winCaptureNext )
2316     {
2317         ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
2318
2319         wxWindowNext *item = ms_winCaptureNext;
2320         ms_winCaptureNext = item->next;
2321         delete item;
2322     }
2323     //else: stack is empty, no previous capture
2324
2325     wxLogTrace(_T("mousecapture"),
2326         (const wxChar *) _T("After ReleaseMouse() mouse is captured by %p"),
2327         GetCapture());
2328 }
2329
2330 #if wxUSE_HOTKEY
2331
2332 bool
2333 wxWindowBase::RegisterHotKey(int WXUNUSED(hotkeyId),
2334                              int WXUNUSED(modifiers),
2335                              int WXUNUSED(keycode))
2336 {
2337     // not implemented
2338     return false;
2339 }
2340
2341 bool wxWindowBase::UnregisterHotKey(int WXUNUSED(hotkeyId))
2342 {
2343     // not implemented
2344     return false;
2345 }
2346
2347 #endif // wxUSE_HOTKEY
2348
2349 void wxWindowBase::SendDestroyEvent()
2350 {
2351     wxWindowDestroyEvent event;
2352     event.SetEventObject(this);
2353     event.SetId(GetId());
2354     GetEventHandler()->ProcessEvent(event);
2355 }
2356
2357 // ----------------------------------------------------------------------------
2358 // event processing
2359 // ----------------------------------------------------------------------------
2360
2361 bool wxWindowBase::TryValidator(wxEvent& wxVALIDATOR_PARAM(event))
2362 {
2363 #if wxUSE_VALIDATORS
2364     // Can only use the validator of the window which
2365     // is receiving the event
2366     if ( event.GetEventObject() == this )
2367     {
2368         wxValidator *validator = GetValidator();
2369         if ( validator && validator->ProcessEvent(event) )
2370         {
2371             return true;
2372         }
2373     }
2374 #endif // wxUSE_VALIDATORS
2375
2376     return false;
2377 }
2378
2379 bool wxWindowBase::TryParent(wxEvent& event)
2380 {
2381     // carry on up the parent-child hierarchy if the propgation count hasn't
2382     // reached zero yet
2383     if ( event.ShouldPropagate() )
2384     {
2385         // honour the requests to stop propagation at this window: this is
2386         // used by the dialogs, for example, to prevent processing the events
2387         // from the dialog controls in the parent frame which rarely, if ever,
2388         // makes sense
2389         if ( !(GetExtraStyle() & wxWS_EX_BLOCK_EVENTS) )
2390         {
2391             wxWindow *parent = GetParent();
2392             if ( parent && !parent->IsBeingDeleted() )
2393             {
2394                 wxPropagateOnce propagateOnce(event);
2395
2396                 return parent->GetEventHandler()->ProcessEvent(event);
2397             }
2398         }
2399     }
2400
2401     return wxEvtHandler::TryParent(event);
2402 }
2403
2404 // ----------------------------------------------------------------------------
2405 // navigation
2406 // ----------------------------------------------------------------------------
2407
2408 // Navigates in the specified direction.
2409 bool wxWindowBase::Navigate(int flags)
2410 {
2411     wxNavigationKeyEvent eventNav;
2412     eventNav.SetFlags(flags);
2413     eventNav.SetEventObject(this);
2414     if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
2415     {
2416         return true;
2417     }
2418     return false;
2419 }
2420
2421 // ----------------------------------------------------------------------------
2422 // global functions
2423 // ----------------------------------------------------------------------------
2424
2425 wxWindow* wxGetTopLevelParent(wxWindow *win)
2426 {
2427     while ( win && !win->IsTopLevel() )
2428          win = win->GetParent();
2429
2430     return win;
2431 }
2432
2433 #if wxUSE_ACCESSIBILITY
2434 // ----------------------------------------------------------------------------
2435 // accessible object for windows
2436 // ----------------------------------------------------------------------------
2437
2438 // Can return either a child object, or an integer
2439 // representing the child element, starting from 1.
2440 wxAccStatus wxWindowAccessible::HitTest(const wxPoint& WXUNUSED(pt), int* WXUNUSED(childId), wxAccessible** WXUNUSED(childObject))
2441 {
2442     wxASSERT( GetWindow() != NULL );
2443     if (!GetWindow())
2444         return wxACC_FAIL;
2445
2446     return wxACC_NOT_IMPLEMENTED;
2447 }
2448
2449 // Returns the rectangle for this object (id = 0) or a child element (id > 0).
2450 wxAccStatus wxWindowAccessible::GetLocation(wxRect& rect, int elementId)
2451 {
2452     wxASSERT( GetWindow() != NULL );
2453     if (!GetWindow())
2454         return wxACC_FAIL;
2455
2456     wxWindow* win = NULL;
2457     if (elementId == 0)
2458     {
2459         win = GetWindow();
2460     }
2461     else
2462     {
2463         if (elementId <= (int) GetWindow()->GetChildren().GetCount())
2464         {
2465             win = GetWindow()->GetChildren().Item(elementId-1)->GetData();
2466         }
2467         else
2468             return wxACC_FAIL;
2469     }
2470     if (win)
2471     {
2472         rect = win->GetRect();
2473         if (win->GetParent() && !win->IsKindOf(CLASSINFO(wxTopLevelWindow)))
2474             rect.SetPosition(win->GetParent()->ClientToScreen(rect.GetPosition()));
2475         return wxACC_OK;
2476     }
2477
2478     return wxACC_NOT_IMPLEMENTED;
2479 }
2480
2481 // Navigates from fromId to toId/toObject.
2482 wxAccStatus wxWindowAccessible::Navigate(wxNavDir navDir, int fromId,
2483                              int* WXUNUSED(toId), wxAccessible** toObject)
2484 {
2485     wxASSERT( GetWindow() != NULL );
2486     if (!GetWindow())
2487         return wxACC_FAIL;
2488
2489     switch (navDir)
2490     {
2491     case wxNAVDIR_FIRSTCHILD:
2492         {
2493             if (GetWindow()->GetChildren().GetCount() == 0)
2494                 return wxACC_FALSE;
2495             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetFirst()->GetData();
2496             *toObject = childWindow->GetOrCreateAccessible();
2497
2498             return wxACC_OK;
2499         }
2500     case wxNAVDIR_LASTCHILD:
2501         {
2502             if (GetWindow()->GetChildren().GetCount() == 0)
2503                 return wxACC_FALSE;
2504             wxWindow* childWindow = (wxWindow*) GetWindow()->GetChildren().GetLast()->GetData();
2505             *toObject = childWindow->GetOrCreateAccessible();
2506
2507             return wxACC_OK;
2508         }
2509     case wxNAVDIR_RIGHT:
2510     case wxNAVDIR_DOWN:
2511     case wxNAVDIR_NEXT:
2512         {
2513             wxWindowList::compatibility_iterator node =
2514                 wxWindowList::compatibility_iterator();
2515             if (fromId == 0)
2516             {
2517                 // Can't navigate to sibling of this window
2518                 // if we're a top-level window.
2519                 if (!GetWindow()->GetParent())
2520                     return wxACC_NOT_IMPLEMENTED;
2521
2522                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2523             }
2524             else
2525             {
2526                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2527                     node = GetWindow()->GetChildren().Item(fromId-1);
2528             }
2529
2530             if (node && node->GetNext())
2531             {
2532                 wxWindow* nextWindow = node->GetNext()->GetData();
2533                 *toObject = nextWindow->GetOrCreateAccessible();
2534                 return wxACC_OK;
2535             }
2536             else
2537                 return wxACC_FALSE;
2538         }
2539     case wxNAVDIR_LEFT:
2540     case wxNAVDIR_UP:
2541     case wxNAVDIR_PREVIOUS:
2542         {
2543             wxWindowList::compatibility_iterator node =
2544                 wxWindowList::compatibility_iterator();
2545             if (fromId == 0)
2546             {
2547                 // Can't navigate to sibling of this window
2548                 // if we're a top-level window.
2549                 if (!GetWindow()->GetParent())
2550                     return wxACC_NOT_IMPLEMENTED;
2551
2552                 node = GetWindow()->GetParent()->GetChildren().Find(GetWindow());
2553             }
2554             else
2555             {
2556                 if (fromId <= (int) GetWindow()->GetChildren().GetCount())
2557                     node = GetWindow()->GetChildren().Item(fromId-1);
2558             }
2559
2560             if (node && node->GetPrevious())
2561             {
2562                 wxWindow* previousWindow = node->GetPrevious()->GetData();
2563                 *toObject = previousWindow->GetOrCreateAccessible();
2564                 return wxACC_OK;
2565             }
2566             else
2567                 return wxACC_FALSE;
2568         }
2569     }
2570
2571     return wxACC_NOT_IMPLEMENTED;
2572 }
2573
2574 // Gets the name of the specified object.
2575 wxAccStatus wxWindowAccessible::GetName(int childId, wxString* name)
2576 {
2577     wxASSERT( GetWindow() != NULL );
2578     if (!GetWindow())
2579         return wxACC_FAIL;
2580
2581     wxString title;
2582
2583     // If a child, leave wxWidgets to call the function on the actual
2584     // child object.
2585     if (childId > 0)
2586         return wxACC_NOT_IMPLEMENTED;
2587
2588     // This will eventually be replaced by specialised
2589     // accessible classes, one for each kind of wxWidgets
2590     // control or window.
2591 #if wxUSE_BUTTON
2592     if (GetWindow()->IsKindOf(CLASSINFO(wxButton)))
2593         title = ((wxButton*) GetWindow())->GetLabel();
2594     else
2595 #endif
2596         title = GetWindow()->GetName();
2597
2598     if (!title.IsEmpty())
2599     {
2600         *name = title;
2601         return wxACC_OK;
2602     }
2603     else
2604         return wxACC_NOT_IMPLEMENTED;
2605 }
2606
2607 // Gets the number of children.
2608 wxAccStatus wxWindowAccessible::GetChildCount(int* childId)
2609 {
2610     wxASSERT( GetWindow() != NULL );
2611     if (!GetWindow())
2612         return wxACC_FAIL;
2613
2614     *childId = (int) GetWindow()->GetChildren().GetCount();
2615     return wxACC_OK;
2616 }
2617
2618 // Gets the specified child (starting from 1).
2619 // If *child is NULL and return value is wxACC_OK,
2620 // this means that the child is a simple element and
2621 // not an accessible object.
2622 wxAccStatus wxWindowAccessible::GetChild(int childId, wxAccessible** child)
2623 {
2624     wxASSERT( GetWindow() != NULL );
2625     if (!GetWindow())
2626         return wxACC_FAIL;
2627
2628     if (childId == 0)
2629     {
2630         *child = this;
2631         return wxACC_OK;
2632     }
2633
2634     if (childId > (int) GetWindow()->GetChildren().GetCount())
2635         return wxACC_FAIL;
2636
2637     wxWindow* childWindow = GetWindow()->GetChildren().Item(childId-1)->GetData();
2638     *child = childWindow->GetOrCreateAccessible();
2639     if (*child)
2640         return wxACC_OK;
2641     else
2642         return wxACC_FAIL;
2643 }
2644
2645 // Gets the parent, or NULL.
2646 wxAccStatus wxWindowAccessible::GetParent(wxAccessible** parent)
2647 {
2648     wxASSERT( GetWindow() != NULL );
2649     if (!GetWindow())
2650         return wxACC_FAIL;
2651
2652     wxWindow* parentWindow = GetWindow()->GetParent();
2653     if (!parentWindow)
2654     {
2655         *parent = NULL;
2656         return wxACC_OK;
2657     }
2658     else
2659     {
2660         *parent = parentWindow->GetOrCreateAccessible();
2661         if (*parent)
2662             return wxACC_OK;
2663         else
2664             return wxACC_FAIL;
2665     }
2666 }
2667
2668 // Performs the default action. childId is 0 (the action for this object)
2669 // or > 0 (the action for a child).
2670 // Return wxACC_NOT_SUPPORTED if there is no default action for this
2671 // window (e.g. an edit control).
2672 wxAccStatus wxWindowAccessible::DoDefaultAction(int WXUNUSED(childId))
2673 {
2674     wxASSERT( GetWindow() != NULL );
2675     if (!GetWindow())
2676         return wxACC_FAIL;
2677
2678     return wxACC_NOT_IMPLEMENTED;
2679 }
2680
2681 // Gets the default action for this object (0) or > 0 (the action for a child).
2682 // Return wxACC_OK even if there is no action. actionName is the action, or the empty
2683 // string if there is no action.
2684 // The retrieved string describes the action that is performed on an object,
2685 // not what the object does as a result. For example, a toolbar button that prints
2686 // a document has a default action of "Press" rather than "Prints the current document."
2687 wxAccStatus wxWindowAccessible::GetDefaultAction(int WXUNUSED(childId), wxString* WXUNUSED(actionName))
2688 {
2689     wxASSERT( GetWindow() != NULL );
2690     if (!GetWindow())
2691         return wxACC_FAIL;
2692
2693     return wxACC_NOT_IMPLEMENTED;
2694 }
2695
2696 // Returns the description for this object or a child.
2697 wxAccStatus wxWindowAccessible::GetDescription(int WXUNUSED(childId), wxString* description)
2698 {
2699     wxASSERT( GetWindow() != NULL );
2700     if (!GetWindow())
2701         return wxACC_FAIL;
2702
2703     wxString ht(GetWindow()->GetHelpText());
2704     if (!ht.IsEmpty())
2705     {
2706         *description = ht;
2707         return wxACC_OK;
2708     }
2709     return wxACC_NOT_IMPLEMENTED;
2710 }
2711
2712 // Returns help text for this object or a child, similar to tooltip text.
2713 wxAccStatus wxWindowAccessible::GetHelpText(int WXUNUSED(childId), wxString* helpText)
2714 {
2715     wxASSERT( GetWindow() != NULL );
2716     if (!GetWindow())
2717         return wxACC_FAIL;
2718
2719     wxString ht(GetWindow()->GetHelpText());
2720     if (!ht.IsEmpty())
2721     {
2722         *helpText = ht;
2723         return wxACC_OK;
2724     }
2725     return wxACC_NOT_IMPLEMENTED;
2726 }
2727
2728 // Returns the keyboard shortcut for this object or child.
2729 // Return e.g. ALT+K
2730 wxAccStatus wxWindowAccessible::GetKeyboardShortcut(int WXUNUSED(childId), wxString* WXUNUSED(shortcut))
2731 {
2732     wxASSERT( GetWindow() != NULL );
2733     if (!GetWindow())
2734         return wxACC_FAIL;
2735
2736     return wxACC_NOT_IMPLEMENTED;
2737 }
2738
2739 // Returns a role constant.
2740 wxAccStatus wxWindowAccessible::GetRole(int childId, wxAccRole* role)
2741 {
2742     wxASSERT( GetWindow() != NULL );
2743     if (!GetWindow())
2744         return wxACC_FAIL;
2745
2746     // If a child, leave wxWidgets to call the function on the actual
2747     // child object.
2748     if (childId > 0)
2749         return wxACC_NOT_IMPLEMENTED;
2750
2751     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2752         return wxACC_NOT_IMPLEMENTED;
2753 #if wxUSE_STATUSBAR
2754     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2755         return wxACC_NOT_IMPLEMENTED;
2756 #endif
2757 #if wxUSE_TOOLBAR
2758     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2759         return wxACC_NOT_IMPLEMENTED;
2760 #endif
2761
2762     //*role = wxROLE_SYSTEM_CLIENT;
2763     *role = wxROLE_SYSTEM_CLIENT;
2764     return wxACC_OK;
2765
2766     #if 0
2767     return wxACC_NOT_IMPLEMENTED;
2768     #endif
2769 }
2770
2771 // Returns a state constant.
2772 wxAccStatus wxWindowAccessible::GetState(int childId, long* state)
2773 {
2774     wxASSERT( GetWindow() != NULL );
2775     if (!GetWindow())
2776         return wxACC_FAIL;
2777
2778     // If a child, leave wxWidgets to call the function on the actual
2779     // child object.
2780     if (childId > 0)
2781         return wxACC_NOT_IMPLEMENTED;
2782
2783     if (GetWindow()->IsKindOf(CLASSINFO(wxControl)))
2784         return wxACC_NOT_IMPLEMENTED;
2785
2786 #if wxUSE_STATUSBAR
2787     if (GetWindow()->IsKindOf(CLASSINFO(wxStatusBar)))
2788         return wxACC_NOT_IMPLEMENTED;
2789 #endif
2790 #if wxUSE_TOOLBAR
2791     if (GetWindow()->IsKindOf(CLASSINFO(wxToolBar)))
2792         return wxACC_NOT_IMPLEMENTED;
2793 #endif
2794
2795     *state = 0;
2796     return wxACC_OK;
2797
2798     #if 0
2799     return wxACC_NOT_IMPLEMENTED;
2800     #endif
2801 }
2802
2803 // Returns a localized string representing the value for the object
2804 // or child.
2805 wxAccStatus wxWindowAccessible::GetValue(int WXUNUSED(childId), wxString* WXUNUSED(strValue))
2806 {
2807     wxASSERT( GetWindow() != NULL );
2808     if (!GetWindow())
2809         return wxACC_FAIL;
2810
2811     return wxACC_NOT_IMPLEMENTED;
2812 }
2813
2814 // Selects the object or child.
2815 wxAccStatus wxWindowAccessible::Select(int WXUNUSED(childId), wxAccSelectionFlags WXUNUSED(selectFlags))
2816 {
2817     wxASSERT( GetWindow() != NULL );
2818     if (!GetWindow())
2819         return wxACC_FAIL;
2820
2821     return wxACC_NOT_IMPLEMENTED;
2822 }
2823
2824 // Gets the window with the keyboard focus.
2825 // If childId is 0 and child is NULL, no object in
2826 // this subhierarchy has the focus.
2827 // If this object has the focus, child should be 'this'.
2828 wxAccStatus wxWindowAccessible::GetFocus(int* WXUNUSED(childId), wxAccessible** WXUNUSED(child))
2829 {
2830     wxASSERT( GetWindow() != NULL );
2831     if (!GetWindow())
2832         return wxACC_FAIL;
2833
2834     return wxACC_NOT_IMPLEMENTED;
2835 }
2836
2837 // Gets a variant representing the selected children
2838 // of this object.
2839 // Acceptable values:
2840 // - a null variant (IsNull() returns TRUE)
2841 // - a list variant (GetType() == wxT("list")
2842 // - an integer representing the selected child element,
2843 //   or 0 if this object is selected (GetType() == wxT("long")
2844 // - a "void*" pointer to a wxAccessible child object
2845 wxAccStatus wxWindowAccessible::GetSelections(wxVariant* WXUNUSED(selections))
2846 {
2847     wxASSERT( GetWindow() != NULL );
2848     if (!GetWindow())
2849         return wxACC_FAIL;
2850
2851     return wxACC_NOT_IMPLEMENTED;
2852 }
2853
2854 #endif // wxUSE_ACCESSIBILITY