src/univ/menu.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        univ/menu.cpp
   3 // Purpose:     wxMenuItem, wxMenu and wxMenuBar implementation
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     25.08.00
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2000 SciTech Software, Inc. (www.scitechsoft.com)
   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 "univmenuitem.h"
  22     #pragma implementation "univmenu.h"
  23 #endif
  24
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/dynarray.h"
  33     #include "wx/control.h"      // for FindAccelIndex()
  34     #include "wx/menu.h"
  35     #include "wx/settings.h"
  36     #include "wx/accel.h"
  37     #include "wx/log.h"
  38 #endif // WX_PRECOMP
  39
  40 #if wxUSE_MENUS
  41
  42 #include "wx/popupwin.h"
  43 #include "wx/evtloop.h"
  44 #include "wx/dcclient.h"
  45 #include "wx/frame.h"
  46
  47 #include "wx/univ/renderer.h"
  48
  49 #ifdef __WXMSW__
  50     #include "wx/msw/private.h"
  51 #endif // __WXMSW__
  52
  53 // ----------------------------------------------------------------------------
  54 // wxMenuInfo contains all extra information about top level menus we need
  55 // ----------------------------------------------------------------------------
  56
  57 class WXDLLEXPORT wxMenuInfo
  58 {
  59 public:
  60     // ctor
  61     wxMenuInfo(const wxString& text)
  62     {
  63         SetLabel(text);
  64         SetEnabled();
  65     }
  66
  67     // modifiers
  68
  69     void SetLabel(const wxString& text)
  70     {
  71         // remember the accel char (may be -1 if none)
  72         m_indexAccel = wxControl::FindAccelIndex(text, &m_label);
  73
  74         // calculate the width later, after the menu bar is created
  75         m_width = 0;
  76     }
  77
  78     void SetEnabled(bool enabled = true) { m_isEnabled = enabled; }
  79
  80     // accessors
  81
  82     const wxString& GetLabel() const { return m_label; }
  83     bool IsEnabled() const { return m_isEnabled; }
  84     wxCoord GetWidth(wxMenuBar *menubar) const
  85     {
  86         if ( !m_width )
  87         {
  88             wxConstCast(this, wxMenuInfo)->CalcWidth(menubar);
  89         }
  90
  91         return m_width;
  92     }
  93
  94     int GetAccelIndex() const { return m_indexAccel; }
  95
  96 private:
  97     void CalcWidth(wxMenuBar *menubar)
  98     {
  99         wxSize size;
 100         wxClientDC dc(menubar);
 101         dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
 102         dc.GetTextExtent(m_label, &size.x, &size.y);
 103
 104         // adjust for the renderer we use and store the width
 105         m_width = menubar->GetRenderer()->GetMenuBarItemSize(size).x;
 106     }
 107
 108     wxString m_label;
 109     wxCoord m_width;
 110     int m_indexAccel;
 111     bool m_isEnabled;
 112 };
 113
 114 #include "wx/arrimpl.cpp"
 115
 116 WX_DEFINE_OBJARRAY(wxMenuInfoArray);
 117
 118 // ----------------------------------------------------------------------------
 119 // wxPopupMenuWindow: a popup window showing a menu
 120 // ----------------------------------------------------------------------------
 121
 122 class wxPopupMenuWindow : public wxPopupTransientWindow
 123 {
 124 public:
 125     wxPopupMenuWindow(wxWindow *parent, wxMenu *menu);
 126
 127     ~wxPopupMenuWindow();
 128
 129     // override the base class version to select the first item initially
 130     virtual void Popup(wxWindow *focus = NULL);
 131
 132     // override the base class version to dismiss any open submenus
 133     virtual void Dismiss();
 134
 135     // notify the menu when the window disappears from screen
 136     virtual void OnDismiss();
 137
 138     // called when a submenu is dismissed
 139     void OnSubmenuDismiss(bool dismissParent);
 140
 141     // get the currently selected item (may be NULL)
 142     wxMenuItem *GetCurrentItem() const
 143     {
 144         return m_nodeCurrent ? m_nodeCurrent->GetData() : NULL;
 145     }
 146
 147     // find the menu item at given position
 148     wxMenuItemList::compatibility_iterator GetMenuItemFromPoint(const wxPoint& pt) const;
 149
 150     // refresh the given item
 151     void RefreshItem(wxMenuItem *item);
 152
 153     // preselect the first item
 154     void SelectFirst() { SetCurrent(m_menu->GetMenuItems().GetFirst()); }
 155
 156     // process the key event, return true if done
 157     bool ProcessKeyDown(int key);
 158
 159     // process mouse move event
 160     void ProcessMouseMove(const wxPoint& pt);
 161
 162     // don't dismiss the popup window if the parent menu was clicked
 163     virtual bool ProcessLeftDown(wxMouseEvent& event);
 164
 165 protected:
 166     // how did we perform this operation?
 167     enum InputMethod
 168     {
 169         WithKeyboard,
 170         WithMouse
 171     };
 172
 173     // draw the menu inside this window
 174     virtual void DoDraw(wxControlRenderer *renderer);
 175
 176     // event handlers
 177     void OnLeftUp(wxMouseEvent& event);
 178     void OnMouseMove(wxMouseEvent& event);
 179     void OnMouseLeave(wxMouseEvent& event);
 180     void OnKeyDown(wxKeyEvent& event);
 181
 182     // reset the current item and node
 183     void ResetCurrent();
 184
 185     // set the current node and item withotu refreshing anything
 186     void SetCurrent(wxMenuItemList::compatibility_iterator node);
 187     virtual bool SetCurrent(bool doit = true){return wxPopupTransientWindow::SetCurrent(doit);};
 188
 189     // change the current item refreshing the old and new items
 190     void ChangeCurrent(wxMenuItemList::compatibility_iterator node);
 191
 192     // activate item, i.e. call either ClickItem() or OpenSubmenu() depending
 193     // on what it is, return true if something was done (i.e. it's not a
 194     // separator...)
 195     bool ActivateItem(wxMenuItem *item, InputMethod how = WithKeyboard);
 196
 197     // send the event about the item click
 198     void ClickItem(wxMenuItem *item);
 199
 200     // show the submenu for this item
 201     void OpenSubmenu(wxMenuItem *item, InputMethod how = WithKeyboard);
 202
 203     // can this tiem be opened?
 204     bool CanOpen(wxMenuItem *item)
 205     {
 206         return item && item->IsEnabled() && item->IsSubMenu();
 207     }
 208
 209     // dismiss the menu and all parent menus too
 210     void DismissAndNotify();
 211
 212     // react to dimissing this menu and also dismiss the parent if
 213     // dismissParent
 214     void HandleDismiss(bool dismissParent);
 215
 216     // do we have an open submenu?
 217     bool HasOpenSubmenu() const { return m_hasOpenSubMenu; }
 218
 219     // get previous node after the current one
 220     wxMenuItemList::compatibility_iterator GetPrevNode() const;
 221
 222     // get previous node before the given one, wrapping if it's the first one
 223     wxMenuItemList::compatibility_iterator GetPrevNode(wxMenuItemList::compatibility_iterator node) const;
 224
 225     // get next node after the current one
 226     wxMenuItemList::compatibility_iterator GetNextNode() const;
 227
 228     // get next node after the given one, wrapping if it's the last one
 229     wxMenuItemList::compatibility_iterator GetNextNode(wxMenuItemList::compatibility_iterator node) const;
 230
 231 private:
 232     // the menu we show
 233     wxMenu *m_menu;
 234
 235     // the menu node corresponding to the current item
 236     wxMenuItemList::compatibility_iterator m_nodeCurrent;
 237
 238     // do we currently have an opened submenu?
 239     bool m_hasOpenSubMenu;
 240
 241     DECLARE_EVENT_TABLE()
 242 };
 243
 244 // ----------------------------------------------------------------------------
 245 // wxMenuKbdRedirector: an event handler which redirects kbd input to wxMenu
 246 // ----------------------------------------------------------------------------
 247
 248 class wxMenuKbdRedirector : public wxEvtHandler
 249 {
 250 public:
 251     wxMenuKbdRedirector(wxMenu *menu) { m_menu = menu; }
 252
 253     virtual bool ProcessEvent(wxEvent& event)
 254     {
 255         if ( event.GetEventType() == wxEVT_KEY_DOWN )
 256         {
 257             return m_menu->ProcessKeyDown(((wxKeyEvent &)event).GetKeyCode());
 258         }
 259         else
 260         {
 261             // return false;
 262
 263             return wxEvtHandler::ProcessEvent(event);
 264         }
 265     }
 266
 267 private:
 268     wxMenu *m_menu;
 269 };
 270
 271 // ----------------------------------------------------------------------------
 272 // wxWin macros
 273 // ----------------------------------------------------------------------------
 274
 275 IMPLEMENT_DYNAMIC_CLASS(wxMenu, wxEvtHandler)
 276 IMPLEMENT_DYNAMIC_CLASS(wxMenuBar, wxWindow)
 277 IMPLEMENT_DYNAMIC_CLASS(wxMenuItem, wxObject)
 278
 279 BEGIN_EVENT_TABLE(wxPopupMenuWindow, wxPopupTransientWindow)
 280     EVT_KEY_DOWN(wxPopupMenuWindow::OnKeyDown)
 281
 282     EVT_LEFT_UP(wxPopupMenuWindow::OnLeftUp)
 283     EVT_MOTION(wxPopupMenuWindow::OnMouseMove)
 284     EVT_LEAVE_WINDOW(wxPopupMenuWindow::OnMouseLeave)
 285 END_EVENT_TABLE()
 286
 287 BEGIN_EVENT_TABLE(wxMenuBar, wxMenuBarBase)
 288     EVT_KILL_FOCUS(wxMenuBar::OnKillFocus)
 289
 290     EVT_KEY_DOWN(wxMenuBar::OnKeyDown)
 291
 292     EVT_LEFT_DOWN(wxMenuBar::OnLeftDown)
 293     EVT_MOTION(wxMenuBar::OnMouseMove)
 294 END_EVENT_TABLE()
 295
 296 // ============================================================================
 297 // implementation
 298 // ============================================================================
 299
 300 // ----------------------------------------------------------------------------
 301 // wxPopupMenuWindow
 302 // ----------------------------------------------------------------------------
 303
 304 wxPopupMenuWindow::wxPopupMenuWindow(wxWindow *parent, wxMenu *menu)
 305 {
 306     m_menu = menu;
 307     m_hasOpenSubMenu = false;
 308
 309     ResetCurrent();
 310
 311     (void)Create(parent, wxBORDER_RAISED);
 312
 313     SetCursor(wxCURSOR_ARROW);
 314 }
 315
 316 wxPopupMenuWindow::~wxPopupMenuWindow()
 317 {
 318     // When m_popupMenu in wxMenu is deleted because it
 319     // is a child of an old menu bar being deleted (note: it does
 320     // not get destroyed by the wxMenu destructor, but
 321     // by DestroyChildren()), m_popupMenu should be reset to NULL.
 322
 323     m_menu->m_popupMenu = NULL;
 324 }
 325
 326 // ----------------------------------------------------------------------------
 327 // wxPopupMenuWindow current item/node handling
 328 // ----------------------------------------------------------------------------
 329
 330 void wxPopupMenuWindow::ResetCurrent()
 331 {
 332 #if wxUSE_STL
 333     SetCurrent(wxMenuItemList::compatibility_iterator());
 334 #else
 335     SetCurrent((wxwxMenuItemListNode *)NULL);
 336 #endif
 337 }
 338
 339 void wxPopupMenuWindow::SetCurrent(wxMenuItemList::compatibility_iterator node)
 340 {
 341     m_nodeCurrent = node;
 342 }
 343
 344 void wxPopupMenuWindow::ChangeCurrent(wxMenuItemList::compatibility_iterator node)
 345 {
 346     if ( node != m_nodeCurrent )
 347     {
 348         wxMenuItemList::compatibility_iterator nodeOldCurrent = m_nodeCurrent;
 349
 350         m_nodeCurrent = node;
 351
 352         if ( nodeOldCurrent )
 353         {
 354             wxMenuItem *item = nodeOldCurrent->GetData();
 355             wxCHECK_RET( item, _T("no current item?") );
 356
 357             // if it was the currently opened menu, close it
 358             if ( item->IsSubMenu() && item->GetSubMenu()->IsShown() )
 359             {
 360                 item->GetSubMenu()->Dismiss();
 361                 OnSubmenuDismiss( false );
 362             }
 363
 364             RefreshItem(item);
 365         }
 366
 367         if ( m_nodeCurrent )
 368             RefreshItem(m_nodeCurrent->GetData());
 369     }
 370 }
 371
 372 wxMenuItemList::compatibility_iterator wxPopupMenuWindow::GetPrevNode() const
 373 {
 374     // return the last node if there had been no previously selected one
 375     return m_nodeCurrent ? GetPrevNode(m_nodeCurrent)
 376                          : m_menu->GetMenuItems().GetLast();
 377 }
 378
 379 wxMenuItemList::compatibility_iterator
 380 wxPopupMenuWindow::GetPrevNode(wxMenuItemList::compatibility_iterator node) const
 381 {
 382     if ( node )
 383     {
 384         node = node->GetPrevious();
 385         if ( !node )
 386         {
 387             node = m_menu->GetMenuItems().GetLast();
 388         }
 389     }
 390     //else: the menu is empty
 391
 392     return node;
 393 }
 394
 395 wxMenuItemList::compatibility_iterator wxPopupMenuWindow::GetNextNode() const
 396 {
 397     // return the first node if there had been no previously selected one
 398     return m_nodeCurrent ? GetNextNode(m_nodeCurrent)
 399                          : m_menu->GetMenuItems().GetFirst();
 400 }
 401
 402 wxMenuItemList::compatibility_iterator
 403 wxPopupMenuWindow::GetNextNode(wxMenuItemList::compatibility_iterator node) const
 404 {
 405     if ( node )
 406     {
 407         node = node->GetNext();
 408         if ( !node )
 409         {
 410             node = m_menu->GetMenuItems().GetFirst();
 411         }
 412     }
 413     //else: the menu is empty
 414
 415     return node;
 416 }
 417
 418 // ----------------------------------------------------------------------------
 419 // wxPopupMenuWindow popup/dismiss
 420 // ----------------------------------------------------------------------------
 421
 422 void wxPopupMenuWindow::Popup(wxWindow *focus)
 423 {
 424     // check that the current item had been properly reset before
 425     wxASSERT_MSG( !m_nodeCurrent ||
 426                   m_nodeCurrent == m_menu->GetMenuItems().GetFirst(),
 427                   _T("menu current item preselected incorrectly") );
 428
 429     wxPopupTransientWindow::Popup(focus);
 430
 431 #ifdef __WXMSW__
 432     // ensure that this window is really on top of everything: without using
 433     // SetWindowPos() it can be covered by its parent menu which is not
 434     // really what we want
 435     wxMenu *menuParent = m_menu->GetParent();
 436     if ( menuParent )
 437     {
 438         wxPopupMenuWindow *win = menuParent->m_popupMenu;
 439
 440         // if we're shown, the parent menu must be also shown
 441         wxCHECK_RET( win, _T("parent menu is not shown?") );
 442
 443         if ( !::SetWindowPos(GetHwndOf(win), GetHwnd(),
 444                              0, 0, 0, 0,
 445                              SWP_NOMOVE | SWP_NOSIZE | SWP_NOREDRAW) )
 446         {
 447             wxLogLastError(_T("SetWindowPos(HWND_TOP)"));
 448         }
 449
 450         Refresh();
 451     }
 452 #endif // __WXMSW__
 453 }
 454
 455 void wxPopupMenuWindow::Dismiss()
 456 {
 457     if ( HasOpenSubmenu() )
 458     {
 459         wxMenuItem *item = GetCurrentItem();
 460         wxCHECK_RET( item && item->IsSubMenu(), _T("where is our open submenu?") );
 461
 462         wxPopupMenuWindow *win = item->GetSubMenu()->m_popupMenu;
 463         wxCHECK_RET( win, _T("opened submenu is not opened?") );
 464
 465         win->Dismiss();
 466         OnSubmenuDismiss( false );
 467     }
 468
 469     wxPopupTransientWindow::Dismiss();
 470 }
 471
 472 void wxPopupMenuWindow::OnDismiss()
 473 {
 474     // when we are dismissed because the user clicked elsewhere or we lost
 475     // focus in any other way, hide the parent menu as well
 476     HandleDismiss(true);
 477 }
 478
 479 void wxPopupMenuWindow::OnSubmenuDismiss(bool dismissParent)
 480 {
 481     m_hasOpenSubMenu = false;
 482
 483     // we are closing whole menu so remove current highlight
 484     if ( dismissParent )
 485         ResetCurrent();
 486 }
 487
 488 void wxPopupMenuWindow::HandleDismiss(bool dismissParent)
 489 {
 490     ResetCurrent();
 491
 492     m_menu->OnDismiss(dismissParent);
 493 }
 494
 495 void wxPopupMenuWindow::DismissAndNotify()
 496 {
 497     Dismiss();
 498     HandleDismiss(true);
 499 }
 500
 501 // ----------------------------------------------------------------------------
 502 // wxPopupMenuWindow geometry
 503 // ----------------------------------------------------------------------------
 504
 505 wxMenuItemList::compatibility_iterator
 506 wxPopupMenuWindow::GetMenuItemFromPoint(const wxPoint& pt) const
 507 {
 508     // we only use the y coord normally, but still check x in case the point is
 509     // outside the window completely
 510     if ( wxWindow::HitTest(pt) == wxHT_WINDOW_INSIDE )
 511     {
 512         wxCoord y = 0;
 513         for ( wxMenuItemList::compatibility_iterator node = m_menu->GetMenuItems().GetFirst();
 514               node;
 515               node = node->GetNext() )
 516         {
 517             wxMenuItem *item = node->GetData();
 518             y += item->GetHeight();
 519             if ( y > pt.y )
 520             {
 521                 // found
 522                 return node;
 523             }
 524         }
 525     }
 526
 527 #if wxUSE_STL
 528     return wxMenuItemList::compatibility_iterator();
 529 #else
 530     return NULL;
 531 #endif
 532 }
 533
 534 // ----------------------------------------------------------------------------
 535 // wxPopupMenuWindow drawing
 536 // ----------------------------------------------------------------------------
 537
 538 void wxPopupMenuWindow::RefreshItem(wxMenuItem *item)
 539 {
 540     wxCHECK_RET( item, _T("can't refresh NULL item") );
 541
 542     wxASSERT_MSG( IsShown(), _T("can't refresh menu which is not shown") );
 543
 544     // FIXME: -1 here because of SetLogicalOrigin(1, 1) in DoDraw()
 545     RefreshRect(wxRect(0, item->GetPosition() - 1,
 546                 m_menu->GetGeometryInfo().GetSize().x, item->GetHeight()));
 547 }
 548
 549 void wxPopupMenuWindow::DoDraw(wxControlRenderer *renderer)
 550 {
 551     // no clipping so far - do we need it? I don't think so as the menu is
 552     // never partially covered as it is always on top of everything
 553
 554     wxDC& dc = renderer->GetDC();
 555     dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
 556
 557     // FIXME: this should be done in the renderer, however when it is fixed
 558     //        wxPopupMenuWindow::RefreshItem() should be changed too!
 559     dc.SetLogicalOrigin(1, 1);
 560
 561     wxRenderer *rend = renderer->GetRenderer();
 562
 563     wxCoord y = 0;
 564     const wxMenuGeometryInfo& gi = m_menu->GetGeometryInfo();
 565     for ( wxMenuItemList::compatibility_iterator node = m_menu->GetMenuItems().GetFirst();
 566           node;
 567           node = node->GetNext() )
 568     {
 569         wxMenuItem *item = node->GetData();
 570
 571         if ( item->IsSeparator() )
 572         {
 573             rend->DrawMenuSeparator(dc, y, gi);
 574         }
 575         else // not a separator
 576         {
 577             int flags = 0;
 578             if ( item->IsCheckable() )
 579             {
 580                 flags |= wxCONTROL_CHECKABLE;
 581
 582                 if ( item->IsChecked() )
 583                 {
 584                     flags |= wxCONTROL_CHECKED;
 585                 }
 586             }
 587
 588             if ( !item->IsEnabled() )
 589                 flags |= wxCONTROL_DISABLED;
 590
 591             if ( item->IsSubMenu() )
 592                 flags |= wxCONTROL_ISSUBMENU;
 593
 594             if ( item == GetCurrentItem() )
 595                 flags |= wxCONTROL_SELECTED;
 596
 597             wxBitmap bmp;
 598
 599             if ( !item->IsEnabled() )
 600             {
 601                 bmp = item->GetDisabledBitmap();
 602             }
 603
 604             if ( !bmp.Ok() )
 605             {
 606                 // strangely enough, for unchecked item we use the
 607                 // "checked" bitmap because this is the default one - this
 608                 // explains this strange boolean expression
 609                 bmp = item->GetBitmap(!item->IsCheckable() || item->IsChecked());
 610             }
 611
 612             rend->DrawMenuItem
 613                   (
 614                      dc,
 615                      y,
 616                      gi,
 617                      item->GetLabel(),
 618                      item->GetAccelString(),
 619                      bmp,
 620                      flags,
 621                      item->GetAccelIndex()
 622                   );
 623         }
 624
 625         y += item->GetHeight();
 626     }
 627 }
 628
 629 // ----------------------------------------------------------------------------
 630 // wxPopupMenuWindow actions
 631 // ----------------------------------------------------------------------------
 632
 633 void wxPopupMenuWindow::ClickItem(wxMenuItem *item)
 634 {
 635     wxCHECK_RET( item, _T("can't click NULL item") );
 636
 637     wxASSERT_MSG( !item->IsSeparator() && !item->IsSubMenu(),
 638                   _T("can't click this item") );
 639
 640     wxMenu* menu = m_menu;
 641
 642     // close all menus
 643     DismissAndNotify();
 644
 645     menu->ClickItem(item);
 646 }
 647
 648 void wxPopupMenuWindow::OpenSubmenu(wxMenuItem *item, InputMethod how)
 649 {
 650     wxCHECK_RET( item, _T("can't open NULL submenu") );
 651
 652     wxMenu *submenu = item->GetSubMenu();
 653     wxCHECK_RET( submenu, _T("can only open submenus!") );
 654
 655     // FIXME: should take into account the border width
 656     submenu->Popup(ClientToScreen(wxPoint(0, item->GetPosition())),
 657                    wxSize(m_menu->GetGeometryInfo().GetSize().x, 0),
 658                    how == WithKeyboard /* preselect first item then */);
 659
 660     m_hasOpenSubMenu = true;
 661 }
 662
 663 bool wxPopupMenuWindow::ActivateItem(wxMenuItem *item, InputMethod how)
 664 {
 665     // don't activate disabled items
 666     if ( !item || !item->IsEnabled() )
 667     {
 668         return false;
 669     }
 670
 671     // normal menu items generate commands, submenus can be opened and
 672     // the separators don't do anything
 673     if ( item->IsSubMenu() )
 674     {
 675         OpenSubmenu(item, how);
 676     }
 677     else if ( !item->IsSeparator() )
 678     {
 679         ClickItem(item);
 680     }
 681     else // separator, can't activate
 682     {
 683         return false;
 684     }
 685
 686     return true;
 687 }
 688
 689 // ----------------------------------------------------------------------------
 690 // wxPopupMenuWindow input handling
 691 // ----------------------------------------------------------------------------
 692
 693 bool wxPopupMenuWindow::ProcessLeftDown(wxMouseEvent& event)
 694 {
 695     // wxPopupWindowHandler dismisses the window when the mouse is clicked
 696     // outside it which is usually just fine, but there is one case when we
 697     // don't want to do it: if the mouse was clicked on the parent submenu item
 698     // which opens this menu, so check for it
 699
 700     wxPoint pos = event.GetPosition();
 701     if ( HitTest(pos.x, pos.y) == wxHT_WINDOW_OUTSIDE )
 702     {
 703         wxMenu *menu = m_menu->GetParent();
 704         if ( menu )
 705         {
 706             wxPopupMenuWindow *win = menu->m_popupMenu;
 707
 708             wxCHECK_MSG( win, false, _T("parent menu not shown?") );
 709
 710             pos = ClientToScreen(pos);
 711             if ( win->GetMenuItemFromPoint(win->ScreenToClient(pos)) )
 712             {
 713                 // eat the event
 714                 return true;
 715             }
 716             //else: it is outside the parent menu as well, do dismiss this one
 717         }
 718     }
 719
 720     return false;
 721 }
 722
 723 void wxPopupMenuWindow::OnLeftUp(wxMouseEvent& event)
 724 {
 725     wxMenuItemList::compatibility_iterator node = GetMenuItemFromPoint(event.GetPosition());
 726     if ( node )
 727     {
 728         ActivateItem(node->GetData(), WithMouse);
 729     }
 730 }
 731
 732 void wxPopupMenuWindow::OnMouseMove(wxMouseEvent& event)
 733 {
 734     const wxPoint pt = event.GetPosition();
 735
 736     // we need to ignore extra mouse events: example when this happens is when
 737     // the mouse is on the menu and we open a submenu from keyboard - Windows
 738     // then sends us a dummy mouse move event, we (correctly) determine that it
 739     // happens in the parent menu and so immediately close the just opened
 740     // submenu!
 741 #ifdef __WXMSW__
 742     static wxPoint s_ptLast;
 743     wxPoint ptCur = ClientToScreen(pt);
 744     if ( ptCur == s_ptLast )
 745     {
 746         return;
 747     }
 748
 749     s_ptLast = ptCur;
 750 #endif // __WXMSW__
 751
 752     ProcessMouseMove(pt);
 753
 754     event.Skip();
 755 }
 756
 757 void wxPopupMenuWindow::ProcessMouseMove(const wxPoint& pt)
 758 {
 759     wxMenuItemList::compatibility_iterator node = GetMenuItemFromPoint(pt);
 760
 761     // don't reset current to NULL here, we only do it when the mouse leaves
 762     // the window (see below)
 763     if ( node )
 764     {
 765         if ( node != m_nodeCurrent )
 766         {
 767             ChangeCurrent(node);
 768
 769             wxMenuItem *item = GetCurrentItem();
 770             if ( CanOpen(item) )
 771             {
 772                 OpenSubmenu(item, WithMouse);
 773             }
 774         }
 775         //else: same item, nothing to do
 776     }
 777     else // not on an item
 778     {
 779         // the last open submenu forwards the mouse move messages to its
 780         // parent, so if the mouse moves to another item of the parent menu,
 781         // this menu is closed and this other item is selected - in the similar
 782         // manner, the top menu forwards the mouse moves to the menubar which
 783         // allows to select another top level menu by just moving the mouse
 784
 785         // we need to translate our client coords to the client coords of the
 786         // window we forward this event to
 787         wxPoint ptScreen = ClientToScreen(pt);
 788
 789         // if the mouse is outside this menu, let the parent one to
 790         // process it
 791         wxMenu *menuParent = m_menu->GetParent();
 792         if ( menuParent )
 793         {
 794             wxPopupMenuWindow *win = menuParent->m_popupMenu;
 795
 796             // if we're shown, the parent menu must be also shown
 797             wxCHECK_RET( win, _T("parent menu is not shown?") );
 798
 799             win->ProcessMouseMove(win->ScreenToClient(ptScreen));
 800         }
 801         else // no parent menu
 802         {
 803             wxMenuBar *menubar = m_menu->GetMenuBar();
 804             if ( menubar )
 805             {
 806                 if ( menubar->ProcessMouseEvent(
 807                             menubar->ScreenToClient(ptScreen)) )
 808                 {
 809                     // menubar has closed this menu and opened another one, probably
 810                     return;
 811                 }
 812             }
 813         }
 814         //else: top level popup menu, no other processing to do
 815     }
 816 }
 817
 818 void wxPopupMenuWindow::OnMouseLeave(wxMouseEvent& event)
 819 {
 820     // due to the artefact of mouse events generation under MSW, we actually
 821     // may get the mouse leave event after the menu had been already dismissed
 822     // and calling ChangeCurrent() would then assert, so don't do it
 823     if ( IsShown() )
 824     {
 825         // we shouldn't change the current them if our submenu is opened and
 826         // mouse moved there, in this case the submenu is responsable for
 827         // handling it
 828         bool resetCurrent;
 829         if ( HasOpenSubmenu() )
 830         {
 831             wxMenuItem *item = GetCurrentItem();
 832             wxCHECK_RET( CanOpen(item), _T("where is our open submenu?") );
 833
 834             wxPopupMenuWindow *win = item->GetSubMenu()->m_popupMenu;
 835             wxCHECK_RET( win, _T("submenu is opened but not shown?") );
 836
 837             // only handle this event if the mouse is not inside the submenu
 838             wxPoint pt = ClientToScreen(event.GetPosition());
 839             resetCurrent =
 840                 win->HitTest(win->ScreenToClient(pt)) == wxHT_WINDOW_OUTSIDE;
 841         }
 842         else
 843         {
 844             // this menu is the last opened
 845             resetCurrent = true;
 846         }
 847
 848         if ( resetCurrent )
 849         {
 850 #if wxUSE_STL
 851             ChangeCurrent(wxMenuItemList::compatibility_iterator());
 852 #else
 853             ChangeCurrent(NULL);
 854 #endif
 855         }
 856     }
 857
 858     event.Skip();
 859 }
 860
 861 void wxPopupMenuWindow::OnKeyDown(wxKeyEvent& event)
 862 {
 863     if ( !ProcessKeyDown(event.GetKeyCode()) )
 864     {
 865         event.Skip();
 866     }
 867 }
 868
 869 bool wxPopupMenuWindow::ProcessKeyDown(int key)
 870 {
 871     wxMenuItem *item = GetCurrentItem();
 872
 873     // first let the opened submenu to have it (no test for IsEnabled() here,
 874     // the keys navigate even in a disabled submenu if we had somehow managed
 875     // to open it inspit of this)
 876     if ( HasOpenSubmenu() )
 877     {
 878         wxCHECK_MSG( CanOpen(item), false,
 879                      _T("has open submenu but another item selected?") );
 880
 881         if ( item->GetSubMenu()->ProcessKeyDown(key) )
 882             return true;
 883     }
 884
 885     bool processed = true;
 886
 887     // handle the up/down arrows, home, end, esc and return here, pass the
 888     // left/right arrows to the menu bar except when the right arrow can be
 889     // used to open a submenu
 890     switch ( key )
 891     {
 892         case WXK_LEFT:
 893             // if we're not a top level menu, close us, else leave this to the
 894             // menubar
 895             if ( !m_menu->GetParent() )
 896             {
 897                 processed = false;
 898                 break;
 899             }
 900
 901             // fall through
 902
 903         case WXK_ESCAPE:
 904             // close just this menu
 905             Dismiss();
 906             HandleDismiss(false);
 907             break;
 908
 909         case WXK_RETURN:
 910             processed = ActivateItem(item);
 911             break;
 912
 913         case WXK_HOME:
 914             ChangeCurrent(m_menu->GetMenuItems().GetFirst());
 915             break;
 916
 917         case WXK_END:
 918             ChangeCurrent(m_menu->GetMenuItems().GetLast());
 919             break;
 920
 921         case WXK_UP:
 922         case WXK_DOWN:
 923             {
 924                 bool up = key == WXK_UP;
 925
 926                 wxMenuItemList::compatibility_iterator nodeStart = up ? GetPrevNode()
 927                                                      : GetNextNode(),
 928                                      node = nodeStart;
 929                 while ( node && node->GetData()->IsSeparator() )
 930                 {
 931                     node = up ? GetPrevNode(node) : GetNextNode(node);
 932
 933                     if ( node == nodeStart )
 934                     {
 935                         // nothing but separators and disabled items in this
 936                         // menu, break out
 937 #if wxUSE_STL
 938                         node = wxMenuItemList::compatibility_iterator();
 939 #else
 940                         node = NULL;
 941 #endif
 942                     }
 943                 }
 944
 945                 if ( node )
 946                 {
 947                     ChangeCurrent(node);
 948                 }
 949                 else
 950                 {
 951                     processed = false;
 952                 }
 953             }
 954             break;
 955
 956         case WXK_RIGHT:
 957             // don't try to reopen an already opened menu
 958             if ( !HasOpenSubmenu() && CanOpen(item) )
 959             {
 960                 OpenSubmenu(item);
 961             }
 962             else
 963             {
 964                 processed = false;
 965             }
 966             break;
 967
 968         default:
 969             // look for the menu item starting with this letter
 970             if ( wxIsalnum((wxChar)key) )
 971             {
 972                 // we want to start from the item after this one because
 973                 // if we're already on the item with the given accel we want to
 974                 // go to the next one, not to stay in place
 975                 wxMenuItemList::compatibility_iterator nodeStart = GetNextNode();
 976
 977                 // do we have more than one item with this accel?
 978                 bool notUnique = false;
 979
 980                 // translate everything to lower case before comparing
 981                 wxChar chAccel = (wxChar)wxTolower(key);
 982
 983                 // loop through all items searching for the item with this
 984                 // accel
 985                 wxMenuItemList::compatibility_iterator node = nodeStart,
 986 #if wxUSE_STL
 987                                                        nodeFound = wxMenuItemList::compatibility_iterator();
 988 #else
 989                                                        nodeFound = NULL;
 990 #endif
 991                 for ( ;; )
 992                 {
 993                     item = node->GetData();
 994
 995                     int idxAccel = item->GetAccelIndex();
 996                     if ( idxAccel != -1 &&
 997                          wxTolower(item->GetLabel()[(size_t)idxAccel])
 998                             == chAccel )
 999                     {
1000                         // ok, found an item with this accel
1001                         if ( !nodeFound )
1002                         {
1003                             // store it but continue searching as we need to
1004                             // know if it's the only item with this accel or if
1005                             // there are more
1006                             nodeFound = node;
1007                         }
1008                         else // we already had found such item
1009                         {
1010                             notUnique = true;
1011
1012                             // no need to continue further, we won't find
1013                             // anything we don't already know
1014                             break;
1015                         }
1016                     }
1017
1018                     // we want to iterate over all items wrapping around if
1019                     // necessary
1020                     node = GetNextNode(node);
1021                     if ( node == nodeStart )
1022                     {
1023                         // we've seen all nodes
1024                         break;
1025                     }
1026                 }
1027
1028                 if ( nodeFound )
1029                 {
1030                     item = nodeFound->GetData();
1031
1032                     // go to this item anyhow
1033                     ChangeCurrent(nodeFound);
1034
1035                     if ( !notUnique && item->IsEnabled() )
1036                     {
1037                         // unique item with this accel - activate it
1038                         processed = ActivateItem(item);
1039                     }
1040                     //else: just select it but don't activate as the user might
1041                     //      have wanted to activate another item
1042
1043                     // skip "processed = false" below
1044                     break;
1045                 }
1046             }
1047
1048             processed = false;
1049     }
1050
1051     return processed;
1052 }
1053
1054 // ----------------------------------------------------------------------------
1055 // wxMenu
1056 // ----------------------------------------------------------------------------
1057
1058 void wxMenu::Init()
1059 {
1060     m_geometry = NULL;
1061
1062     m_popupMenu = NULL;
1063
1064     m_startRadioGroup = -1;
1065 }
1066
1067 wxMenu::~wxMenu()
1068 {
1069     delete m_geometry;
1070     delete m_popupMenu;
1071 }
1072
1073 // ----------------------------------------------------------------------------
1074 // wxMenu and wxMenuGeometryInfo
1075 // ----------------------------------------------------------------------------
1076
1077 wxMenuGeometryInfo::~wxMenuGeometryInfo()
1078 {
1079 }
1080
1081 const wxMenuGeometryInfo& wxMenu::GetGeometryInfo() const
1082 {
1083     if ( !m_geometry )
1084     {
1085         if ( m_popupMenu )
1086         {
1087             wxConstCast(this, wxMenu)->m_geometry =
1088                 m_popupMenu->GetRenderer()->GetMenuGeometry(m_popupMenu, *this);
1089         }
1090         else
1091         {
1092             wxFAIL_MSG( _T("can't get geometry without window") );
1093         }
1094     }
1095
1096     return *m_geometry;
1097 }
1098
1099 void wxMenu::InvalidateGeometryInfo()
1100 {
1101     if ( m_geometry )
1102     {
1103         delete m_geometry;
1104         m_geometry = NULL;
1105     }
1106 }
1107
1108 // ----------------------------------------------------------------------------
1109 // wxMenu adding/removing items
1110 // ----------------------------------------------------------------------------
1111
1112 void wxMenu::OnItemAdded(wxMenuItem *item)
1113 {
1114     InvalidateGeometryInfo();
1115
1116 #if wxUSE_ACCEL
1117     AddAccelFor(item);
1118 #endif // wxUSE_ACCEL
1119
1120     // the submenus of a popup menu should have the same invoking window as it
1121     // has
1122     if ( m_invokingWindow && item->IsSubMenu() )
1123     {
1124         item->GetSubMenu()->SetInvokingWindow(m_invokingWindow);
1125     }
1126 }
1127
1128 void wxMenu::EndRadioGroup()
1129 {
1130     // we're not inside a radio group any longer
1131     m_startRadioGroup = -1;
1132 }
1133
1134 wxMenuItem* wxMenu::DoAppend(wxMenuItem *item)
1135 {
1136     if ( item->GetKind() == wxITEM_RADIO )
1137     {
1138         int count = GetMenuItemCount();
1139
1140         if ( m_startRadioGroup == -1 )
1141         {
1142             // start a new radio group
1143             m_startRadioGroup = count;
1144
1145             // for now it has just one element
1146             item->SetAsRadioGroupStart();
1147             item->SetRadioGroupEnd(m_startRadioGroup);
1148         }
1149         else // extend the current radio group
1150         {
1151             // we need to update its end item
1152             item->SetRadioGroupStart(m_startRadioGroup);
1153             wxMenuItemList::compatibility_iterator node = GetMenuItems().Item(m_startRadioGroup);
1154
1155             if ( node )
1156             {
1157                 node->GetData()->SetRadioGroupEnd(count);
1158             }
1159             else
1160             {
1161                 wxFAIL_MSG( _T("where is the radio group start item?") );
1162             }
1163         }
1164     }
1165     else // not a radio item
1166     {
1167         EndRadioGroup();
1168     }
1169
1170     if ( !wxMenuBase::DoAppend(item) )
1171         return NULL;
1172
1173     OnItemAdded(item);
1174
1175     return item;
1176 }
1177
1178 wxMenuItem* wxMenu::DoInsert(size_t pos, wxMenuItem *item)
1179 {
1180     if ( !wxMenuBase::DoInsert(pos, item) )
1181         return NULL;
1182
1183     OnItemAdded(item);
1184
1185     return item;
1186 }
1187
1188 wxMenuItem *wxMenu::DoRemove(wxMenuItem *item)
1189 {
1190     wxMenuItem *itemOld = wxMenuBase::DoRemove(item);
1191
1192     if ( itemOld )
1193     {
1194         InvalidateGeometryInfo();
1195
1196 #if wxUSE_ACCEL
1197         RemoveAccelFor(item);
1198 #endif // wxUSE_ACCEL
1199     }
1200
1201     return itemOld;
1202 }
1203
1204 // ----------------------------------------------------------------------------
1205 // wxMenu attaching/detaching
1206 // ----------------------------------------------------------------------------
1207
1208 void wxMenu::Attach(wxMenuBarBase *menubar)
1209 {
1210     wxMenuBase::Attach(menubar);
1211
1212     wxCHECK_RET( m_menuBar, _T("menubar can't be NULL after attaching") );
1213
1214     // unfortunately, we can't use m_menuBar->GetEventHandler() here because,
1215     // if the menubar is currently showing a menu, its event handler is a
1216     // temporary one installed by wxPopupWindow and so will disappear soon any
1217     // any attempts to use it from the newly attached menu would result in a
1218     // crash
1219     //
1220     // so we use the menubar itself, even if it's a pity as it means we can't
1221     // redirect all menu events by changing the menubar handler (FIXME)
1222     SetNextHandler(m_menuBar);
1223 }
1224
1225 void wxMenu::Detach()
1226 {
1227     wxMenuBase::Detach();
1228 }
1229
1230 // ----------------------------------------------------------------------------
1231 // wxMenu misc functions
1232 // ----------------------------------------------------------------------------
1233
1234 wxWindow *wxMenu::GetRootWindow() const
1235 {
1236     if ( GetMenuBar() )
1237     {
1238         // simple case - a normal menu attached to the menubar
1239         return GetMenuBar();
1240     }
1241
1242     // we're a popup menu but the trouble is that only the top level popup menu
1243     // has a pointer to the invoking window, so we must walk up the menu chain
1244     // if needed
1245     wxWindow *win = GetInvokingWindow();
1246     if ( win )
1247     {
1248         // we already have it
1249         return win;
1250     }
1251
1252     wxMenu *menu = GetParent();
1253     while ( menu )
1254     {
1255         // We are a submenu of a menu of a menubar
1256         if (menu->GetMenuBar())
1257            return menu->GetMenuBar();
1258
1259         win = menu->GetInvokingWindow();
1260         if ( win )
1261             break;
1262
1263         menu = menu->GetParent();
1264     }
1265
1266     // we're probably going to crash in the caller anyhow, but try to detect
1267     // this error as soon as possible
1268     wxASSERT_MSG( win, _T("menu without any associated window?") );
1269
1270     // also remember it in this menu so that we don't have to search for it the
1271     // next time
1272     wxConstCast(this, wxMenu)->m_invokingWindow = win;
1273
1274     return win;
1275 }
1276
1277 wxRenderer *wxMenu::GetRenderer() const
1278 {
1279     // we're going to crash without renderer!
1280     wxCHECK_MSG( m_popupMenu, NULL, _T("neither popup nor menubar menu?") );
1281
1282     return m_popupMenu->GetRenderer();
1283 }
1284
1285 void wxMenu::RefreshItem(wxMenuItem *item)
1286 {
1287     // the item geometry changed, so our might have changed as well
1288     InvalidateGeometryInfo();
1289
1290     if ( IsShown() )
1291     {
1292         // this would be a bug in IsShown()
1293         wxCHECK_RET( m_popupMenu, _T("must have popup window if shown!") );
1294
1295         // recalc geometry to update the item height and such
1296         (void)GetGeometryInfo();
1297
1298         m_popupMenu->RefreshItem(item);
1299     }
1300 }
1301
1302 // ----------------------------------------------------------------------------
1303 // wxMenu showing and hiding
1304 // ----------------------------------------------------------------------------
1305
1306 bool wxMenu::IsShown() const
1307 {
1308     return m_popupMenu && m_popupMenu->IsShown();
1309 }
1310
1311 void wxMenu::OnDismiss(bool dismissParent)
1312 {
1313     if ( m_menuParent )
1314     {
1315         // always notify the parent about submenu disappearance
1316         wxPopupMenuWindow *win = m_menuParent->m_popupMenu;
1317         if ( win )
1318         {
1319             win->OnSubmenuDismiss( true );
1320         }
1321         else
1322         {
1323             wxFAIL_MSG( _T("parent menu not shown?") );
1324         }
1325
1326         // and if we dismiss everything, propagate to parent
1327         if ( dismissParent )
1328         {
1329             // dismissParent is recursive
1330             m_menuParent->Dismiss();
1331             m_menuParent->OnDismiss(true);
1332         }
1333     }
1334     else // no parent menu
1335     {
1336         // notify the menu bar if we're a top level menu
1337         if ( m_menuBar )
1338         {
1339             m_menuBar->OnDismissMenu(dismissParent);
1340         }
1341         else // popup menu
1342         {
1343             wxCHECK_RET( m_invokingWindow, _T("what kind of menu is this?") );
1344
1345             m_invokingWindow->DismissPopupMenu();
1346
1347             // Why reset it here? We need it for sending the event to...
1348             // SetInvokingWindow(NULL);
1349         }
1350     }
1351 }
1352
1353 void wxMenu::Popup(const wxPoint& pos, const wxSize& size, bool selectFirst)
1354 {
1355     // create the popup window if not done yet
1356     if ( !m_popupMenu )
1357     {
1358         m_popupMenu = new wxPopupMenuWindow(GetRootWindow(), this);
1359     }
1360
1361     // select the first item unless disabled
1362     if ( selectFirst )
1363     {
1364         m_popupMenu->SelectFirst();
1365     }
1366
1367     // the geometry might have changed since the last time we were shown, so
1368     // always resize
1369     m_popupMenu->SetClientSize(GetGeometryInfo().GetSize());
1370
1371     // position it as specified
1372     m_popupMenu->Position(pos, size);
1373
1374     // the menu can't have the focus itself (it is a Windows limitation), so
1375     // always keep the focus at the originating window
1376     wxWindow *focus = GetRootWindow();
1377
1378     wxASSERT_MSG( focus, _T("no window to keep focus on?") );
1379
1380     // and show it
1381     m_popupMenu->Popup(focus);
1382 }
1383
1384 void wxMenu::Dismiss()
1385 {
1386     wxCHECK_RET( IsShown(), _T("can't dismiss hidden menu") );
1387
1388     m_popupMenu->Dismiss();
1389 }
1390
1391 // ----------------------------------------------------------------------------
1392 // wxMenu event processing
1393 // ----------------------------------------------------------------------------
1394
1395 bool wxMenu::ProcessKeyDown(int key)
1396 {
1397     wxCHECK_MSG( m_popupMenu, false,
1398                  _T("can't process key events if not shown") );
1399
1400     return m_popupMenu->ProcessKeyDown(key);
1401 }
1402
1403 bool wxMenu::ClickItem(wxMenuItem *item)
1404 {
1405     int isChecked;
1406     if ( item->IsCheckable() )
1407     {
1408         // update the item state
1409         isChecked = !item->IsChecked();
1410
1411         item->Check(isChecked != 0);
1412     }
1413     else
1414     {
1415         // not applicabled
1416         isChecked = -1;
1417     }
1418
1419     return SendEvent(item->GetId(), isChecked);
1420 }
1421
1422 // ----------------------------------------------------------------------------
1423 // wxMenu accel support
1424 // ----------------------------------------------------------------------------
1425
1426 #if wxUSE_ACCEL
1427
1428 bool wxMenu::ProcessAccelEvent(const wxKeyEvent& event)
1429 {
1430     // do we have an item for this accel?
1431     wxMenuItem *item = m_accelTable.GetMenuItem(event);
1432     if ( item && item->IsEnabled() )
1433     {
1434         return ClickItem(item);
1435     }
1436
1437     // try our submenus
1438     for ( wxMenuItemList::compatibility_iterator node = GetMenuItems().GetFirst();
1439           node;
1440           node = node->GetNext() )
1441     {
1442         const wxMenuItem *item = node->GetData();
1443         if ( item->IsSubMenu() && item->IsEnabled() )
1444         {
1445             // try its elements
1446             if ( item->GetSubMenu()->ProcessAccelEvent(event) )
1447             {
1448                 return true;
1449             }
1450         }
1451     }
1452
1453     return false;
1454 }
1455
1456 void wxMenu::AddAccelFor(wxMenuItem *item)
1457 {
1458     wxAcceleratorEntry *accel = item->GetAccel();
1459     if ( accel )
1460     {
1461         accel->SetMenuItem(item);
1462
1463         m_accelTable.Add(*accel);
1464
1465         delete accel;
1466     }
1467 }
1468
1469 void wxMenu::RemoveAccelFor(wxMenuItem *item)
1470 {
1471     wxAcceleratorEntry *accel = item->GetAccel();
1472     if ( accel )
1473     {
1474         m_accelTable.Remove(*accel);
1475
1476         delete accel;
1477     }
1478 }
1479
1480 #endif // wxUSE_ACCEL
1481
1482 // ----------------------------------------------------------------------------
1483 // wxMenuItem construction
1484 // ----------------------------------------------------------------------------
1485
1486 wxMenuItem::wxMenuItem(wxMenu *parentMenu,
1487                        int id,
1488                        const wxString& text,
1489                        const wxString& help,
1490                        wxItemKind kind,
1491                        wxMenu *subMenu)
1492           : wxMenuItemBase(parentMenu, id, text, help, kind, subMenu)
1493 {
1494     m_posY =
1495     m_height = wxDefaultCoord;
1496
1497     m_radioGroup.start = -1;
1498     m_isRadioGroupStart = false;
1499
1500     m_bmpDisabled = wxNullBitmap;
1501
1502     UpdateAccelInfo();
1503 }
1504
1505 wxMenuItem::~wxMenuItem()
1506 {
1507 }
1508
1509 // ----------------------------------------------------------------------------
1510 // wxMenuItemBase methods implemented here
1511 // ----------------------------------------------------------------------------
1512
1513 /* static */
1514 wxMenuItem *wxMenuItemBase::New(wxMenu *parentMenu,
1515                                 int id,
1516                                 const wxString& name,
1517                                 const wxString& help,
1518                                 wxItemKind kind,
1519                                 wxMenu *subMenu)
1520 {
1521     return new wxMenuItem(parentMenu, id, name, help, kind, subMenu);
1522 }
1523
1524 /* static */
1525 wxString wxMenuItemBase::GetLabelFromText(const wxString& text)
1526 {
1527     return wxStripMenuCodes(text);
1528 }
1529
1530 // ----------------------------------------------------------------------------
1531 // wxMenuItem operations
1532 // ----------------------------------------------------------------------------
1533
1534 void wxMenuItem::NotifyMenu()
1535 {
1536     m_parentMenu->RefreshItem(this);
1537 }
1538
1539 void wxMenuItem::UpdateAccelInfo()
1540 {
1541     m_indexAccel = wxControl::FindAccelIndex(m_text);
1542
1543     // will be empty if the text contains no TABs - ok
1544     m_strAccel = m_text.AfterFirst(_T('\t'));
1545 }
1546
1547 void wxMenuItem::SetText(const wxString& text)
1548 {
1549     if ( text != m_text )
1550     {
1551         // first call the base class version to change m_text
1552         wxMenuItemBase::SetText(text);
1553
1554         UpdateAccelInfo();
1555
1556         NotifyMenu();
1557     }
1558 }
1559
1560 void wxMenuItem::SetCheckable(bool checkable)
1561 {
1562     if ( checkable != IsCheckable() )
1563     {
1564         wxMenuItemBase::SetCheckable(checkable);
1565
1566         NotifyMenu();
1567     }
1568 }
1569
1570 void wxMenuItem::SetBitmaps(const wxBitmap& bmpChecked,
1571                             const wxBitmap& bmpUnchecked)
1572 {
1573     m_bmpChecked = bmpChecked;
1574     m_bmpUnchecked = bmpUnchecked;
1575
1576     NotifyMenu();
1577 }
1578
1579 void wxMenuItem::Enable(bool enable)
1580 {
1581     if ( enable != m_isEnabled )
1582     {
1583         wxMenuItemBase::Enable(enable);
1584
1585         NotifyMenu();
1586     }
1587 }
1588
1589 void wxMenuItem::Check(bool check)
1590 {
1591     wxCHECK_RET( IsCheckable(), wxT("only checkable items may be checked") );
1592
1593     if ( m_isChecked == check )
1594         return;
1595
1596     if ( GetKind() == wxITEM_RADIO )
1597     {
1598         // it doesn't make sense to uncheck a radio item - what would this do?
1599         if ( !check )
1600             return;
1601
1602         // get the index of this item in the menu
1603         const wxMenuItemList& items = m_parentMenu->GetMenuItems();
1604         int pos = items.IndexOf(this);
1605         wxCHECK_RET( pos != wxNOT_FOUND,
1606                      _T("menuitem not found in the menu items list?") );
1607
1608         // get the radio group range
1609         int start,
1610             end;
1611
1612         if ( m_isRadioGroupStart )
1613         {
1614             // we already have all information we need
1615             start = pos;
1616             end = m_radioGroup.end;
1617         }
1618         else // next radio group item
1619         {
1620             // get the radio group end from the start item
1621             start = m_radioGroup.start;
1622             end = items.Item(start)->GetData()->m_radioGroup.end;
1623         }
1624
1625         // also uncheck all the other items in this radio group
1626         wxMenuItemList::compatibility_iterator node = items.Item(start);
1627         for ( int n = start; n <= end && node; n++ )
1628         {
1629             if ( n != pos )
1630             {
1631                 node->GetData()->m_isChecked = false;
1632             }
1633             node = node->GetNext();
1634         }
1635     }
1636
1637     wxMenuItemBase::Check(check);
1638
1639     NotifyMenu();
1640 }
1641
1642 // radio group stuff
1643 // -----------------
1644
1645 void wxMenuItem::SetAsRadioGroupStart()
1646 {
1647     m_isRadioGroupStart = true;
1648 }
1649
1650 void wxMenuItem::SetRadioGroupStart(int start)
1651 {
1652     wxASSERT_MSG( !m_isRadioGroupStart,
1653                   _T("should only be called for the next radio items") );
1654
1655     m_radioGroup.start = start;
1656 }
1657
1658 void wxMenuItem::SetRadioGroupEnd(int end)
1659 {
1660     wxASSERT_MSG( m_isRadioGroupStart,
1661                   _T("should only be called for the first radio item") );
1662
1663     m_radioGroup.end = end;
1664 }
1665
1666 // ----------------------------------------------------------------------------
1667 // wxMenuBar creation
1668 // ----------------------------------------------------------------------------
1669
1670 void wxMenuBar::Init()
1671 {
1672     m_frameLast = NULL;
1673
1674     m_current = -1;
1675
1676     m_menuShown = NULL;
1677
1678     m_shouldShowMenu = false;
1679 }
1680
1681 wxMenuBar::wxMenuBar(size_t n, wxMenu *menus[], const wxString titles[], long WXUNUSED(style))
1682 {
1683     Init();
1684
1685     for (size_t i = 0; i < n; ++i )
1686         Append(menus[i], titles[i]);
1687 }
1688
1689 void wxMenuBar::Attach(wxFrame *frame)
1690 {
1691     // maybe you really wanted to call Detach()?
1692     wxCHECK_RET( frame, _T("wxMenuBar::Attach(NULL) called") );
1693
1694     wxMenuBarBase::Attach(frame);
1695
1696     if ( IsCreated() )
1697     {
1698         // reparent if necessary
1699         if ( m_frameLast != frame )
1700         {
1701             Reparent(frame);
1702         }
1703
1704         // show it back - was hidden by Detach()
1705         Show();
1706     }
1707     else // not created yet, do it now
1708     {
1709         // we have no way to return the error from here anyhow :-(
1710         (void)Create(frame, wxID_ANY);
1711
1712         SetCursor(wxCURSOR_ARROW);
1713
1714         SetFont(wxSystemSettings::GetFont(wxSYS_SYSTEM_FONT));
1715
1716         // calculate and set our height (it won't be changed any more)
1717         SetSize(wxDefaultCoord, GetBestSize().y);
1718     }
1719
1720     // remember the last frame which had us to avoid unnecessarily reparenting
1721     // above
1722     m_frameLast = frame;
1723 }
1724
1725 void wxMenuBar::Detach()
1726 {
1727     // don't delete the window because we may be reattached later, just hide it
1728     if ( m_frameLast )
1729     {
1730         Hide();
1731     }
1732
1733     wxMenuBarBase::Detach();
1734 }
1735
1736 wxMenuBar::~wxMenuBar()
1737 {
1738 }
1739
1740 // ----------------------------------------------------------------------------
1741 // wxMenuBar adding/removing items
1742 // ----------------------------------------------------------------------------
1743
1744 bool wxMenuBar::Append(wxMenu *menu, const wxString& title)
1745 {
1746     return Insert(GetCount(), menu, title);
1747 }
1748
1749 bool wxMenuBar::Insert(size_t pos, wxMenu *menu, const wxString& title)
1750 {
1751     if ( !wxMenuBarBase::Insert(pos, menu, title) )
1752         return false;
1753
1754     wxMenuInfo *info = new wxMenuInfo(title);
1755     m_menuInfos.Insert(info, pos);
1756
1757     RefreshAllItemsAfter(pos);
1758
1759     return true;
1760 }
1761
1762 wxMenu *wxMenuBar::Replace(size_t pos, wxMenu *menu, const wxString& title)
1763 {
1764     wxMenu *menuOld = wxMenuBarBase::Replace(pos, menu, title);
1765
1766     if ( menuOld )
1767     {
1768         wxMenuInfo& info = m_menuInfos[pos];
1769
1770         info.SetLabel(title);
1771
1772         // even if the old menu was disabled, the new one is not any more
1773         info.SetEnabled();
1774
1775         // even if we change only this one, the new label has different width,
1776         // so we need to refresh everything beyond this item as well
1777         RefreshAllItemsAfter(pos);
1778     }
1779
1780     return menuOld;
1781 }
1782
1783 wxMenu *wxMenuBar::Remove(size_t pos)
1784 {
1785     wxMenu *menuOld = wxMenuBarBase::Remove(pos);
1786
1787     if ( menuOld )
1788     {
1789         m_menuInfos.RemoveAt(pos);
1790
1791         // this doesn't happen too often, so don't try to be too smart - just
1792         // refresh everything
1793         Refresh();
1794     }
1795
1796     return menuOld;
1797 }
1798
1799 // ----------------------------------------------------------------------------
1800 // wxMenuBar top level menus access
1801 // ----------------------------------------------------------------------------
1802
1803 wxCoord wxMenuBar::GetItemWidth(size_t pos) const
1804 {
1805     return m_menuInfos[pos].GetWidth(wxConstCast(this, wxMenuBar));
1806 }
1807
1808 void wxMenuBar::EnableTop(size_t pos, bool enable)
1809 {
1810     wxCHECK_RET( pos < GetCount(), _T("invalid index in EnableTop") );
1811
1812     if ( enable != m_menuInfos[pos].IsEnabled() )
1813     {
1814         m_menuInfos[pos].SetEnabled(enable);
1815
1816         RefreshItem(pos);
1817     }
1818     //else: nothing to do
1819 }
1820
1821 bool wxMenuBar::IsEnabledTop(size_t pos) const
1822 {
1823     wxCHECK_MSG( pos < GetCount(), false, _T("invalid index in IsEnabledTop") );
1824
1825     return m_menuInfos[pos].IsEnabled();
1826 }
1827
1828 void wxMenuBar::SetLabelTop(size_t pos, const wxString& label)
1829 {
1830     wxCHECK_RET( pos < GetCount(), _T("invalid index in EnableTop") );
1831
1832     if ( label != m_menuInfos[pos].GetLabel() )
1833     {
1834         m_menuInfos[pos].SetLabel(label);
1835
1836         RefreshItem(pos);
1837     }
1838     //else: nothing to do
1839 }
1840
1841 wxString wxMenuBar::GetLabelTop(size_t pos) const
1842 {
1843     wxCHECK_MSG( pos < GetCount(), wxEmptyString, _T("invalid index in GetLabelTop") );
1844
1845     return m_menuInfos[pos].GetLabel();
1846 }
1847
1848 // ----------------------------------------------------------------------------
1849 // wxMenuBar drawing
1850 // ----------------------------------------------------------------------------
1851
1852 void wxMenuBar::RefreshAllItemsAfter(size_t pos)
1853 {
1854     if ( !IsCreated() )
1855     {
1856         // no need to refresh if nothing is shown yet
1857         return;
1858     }
1859
1860     wxRect rect = GetItemRect(pos);
1861     rect.width = GetClientSize().x - rect.x;
1862     RefreshRect(rect);
1863 }
1864
1865 void wxMenuBar::RefreshItem(size_t pos)
1866 {
1867     wxCHECK_RET( pos != (size_t)-1,
1868                  _T("invalid item in wxMenuBar::RefreshItem") );
1869
1870     if ( !IsCreated() )
1871     {
1872         // no need to refresh if nothing is shown yet
1873         return;
1874     }
1875
1876     RefreshRect(GetItemRect(pos));
1877 }
1878
1879 void wxMenuBar::DoDraw(wxControlRenderer *renderer)
1880 {
1881     wxDC& dc = renderer->GetDC();
1882     dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
1883
1884     // redraw only the items which must be redrawn
1885
1886     // we don't have to use GetUpdateClientRect() here because our client rect
1887     // is the same as total one
1888     wxRect rectUpdate = GetUpdateRegion().GetBox();
1889
1890     int flagsMenubar = GetStateFlags();
1891
1892     wxRect rect;
1893     rect.y = 0;
1894     rect.height = GetClientSize().y;
1895
1896     wxCoord x = 0;
1897     size_t count = GetCount();
1898     for ( size_t n = 0; n < count; n++ )
1899     {
1900         if ( x > rectUpdate.GetRight() )
1901         {
1902             // all remaining items are to the right of rectUpdate
1903             break;
1904         }
1905
1906         rect.x = x;
1907         rect.width = GetItemWidth(n);
1908         x += rect.width;
1909         if ( x < rectUpdate.x )
1910         {
1911             // this item is still to the left of rectUpdate
1912             continue;
1913         }
1914
1915         int flags = flagsMenubar;
1916         if ( m_current != -1 && n == (size_t)m_current )
1917         {
1918             flags |= wxCONTROL_SELECTED;
1919         }
1920
1921         if ( !IsEnabledTop(n) )
1922         {
1923             flags |= wxCONTROL_DISABLED;
1924         }
1925
1926         GetRenderer()->DrawMenuBarItem
1927                        (
1928                             dc,
1929                             rect,
1930                             m_menuInfos[n].GetLabel(),
1931                             flags,
1932                             m_menuInfos[n].GetAccelIndex()
1933                        );
1934     }
1935 }
1936
1937 // ----------------------------------------------------------------------------
1938 // wxMenuBar geometry
1939 // ----------------------------------------------------------------------------
1940
1941 wxRect wxMenuBar::GetItemRect(size_t pos) const
1942 {
1943     wxASSERT_MSG( pos < GetCount(), _T("invalid menu bar item index") );
1944     wxASSERT_MSG( IsCreated(), _T("can't call this method yet") );
1945
1946     wxRect rect;
1947     rect.x =
1948     rect.y = 0;
1949     rect.height = GetClientSize().y;
1950
1951     for ( size_t n = 0; n < pos; n++ )
1952     {
1953         rect.x += GetItemWidth(n);
1954     }
1955
1956     rect.width = GetItemWidth(pos);
1957
1958     return rect;
1959 }
1960
1961 wxSize wxMenuBar::DoGetBestClientSize() const
1962 {
1963     wxSize size;
1964     if ( GetMenuCount() > 0 )
1965     {
1966         wxClientDC dc(wxConstCast(this, wxMenuBar));
1967         dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
1968         dc.GetTextExtent(GetLabelTop(0), &size.x, &size.y);
1969
1970         // adjust for the renderer we use
1971         size = GetRenderer()->GetMenuBarItemSize(size);
1972     }
1973     else // empty menubar
1974     {
1975         size.x =
1976         size.y = 0;
1977     }
1978
1979     // the width is arbitrary, of course, for horizontal menubar
1980     size.x = 100;
1981
1982     return size;
1983 }
1984
1985 int wxMenuBar::GetMenuFromPoint(const wxPoint& pos) const
1986 {
1987     if ( pos.x < 0 || pos.y < 0 || pos.y > GetClientSize().y )
1988         return -1;
1989
1990     // do find it
1991     wxCoord x = 0;
1992     size_t count = GetCount();
1993     for ( size_t item = 0; item < count; item++ )
1994     {
1995         x += GetItemWidth(item);
1996
1997         if ( x > pos.x )
1998         {
1999             return item;
2000         }
2001     }
2002
2003     // to the right of the last menu item
2004     return -1;
2005 }
2006
2007 // ----------------------------------------------------------------------------
2008 // wxMenuBar menu operations
2009 // ----------------------------------------------------------------------------
2010
2011 void wxMenuBar::SelectMenu(size_t pos)
2012 {
2013     SetFocus();
2014     wxLogTrace(_T("mousecapture"), _T("Capturing mouse from wxMenuBar::SelectMenu"));
2015     CaptureMouse();
2016
2017     DoSelectMenu(pos);
2018 }
2019
2020 void wxMenuBar::DoSelectMenu(size_t pos)
2021 {
2022     wxCHECK_RET( pos < GetCount(), _T("invalid menu index in DoSelectMenu") );
2023
2024     int posOld = m_current;
2025
2026     m_current = pos;
2027
2028     if ( posOld != -1 )
2029     {
2030         // close the previous menu
2031         if ( IsShowingMenu() )
2032         {
2033             // restore m_shouldShowMenu flag after DismissMenu() which resets
2034             // it to false
2035             bool old = m_shouldShowMenu;
2036
2037             DismissMenu();
2038
2039             m_shouldShowMenu = old;
2040         }
2041
2042         RefreshItem((size_t)posOld);
2043     }
2044
2045     RefreshItem(pos);
2046 }
2047
2048 void wxMenuBar::PopupMenu(size_t pos)
2049 {
2050     wxCHECK_RET( pos < GetCount(), _T("invalid menu index in PopupCurrentMenu") );
2051
2052     SetFocus();
2053     DoSelectMenu(pos);
2054     PopupCurrentMenu();
2055 }
2056
2057 // ----------------------------------------------------------------------------
2058 // wxMenuBar input handing
2059 // ----------------------------------------------------------------------------
2060
2061 /*
2062    Note that wxMenuBar doesn't use wxInputHandler but handles keyboard and
2063    mouse in the same way under all platforms. This is because it doesn't derive
2064    from wxControl (which works with input handlers) but directly from wxWindow.
2065
2066    Also, menu bar input handling is rather simple, so maybe it's not really
2067    worth making it themeable - at least I've decided against doing it now as it
2068    would merging the changes back into trunk more difficult. But it still could
2069    be done later if really needed.
2070  */
2071
2072 void wxMenuBar::OnKillFocus(wxFocusEvent& event)
2073 {
2074     if ( m_current != -1 )
2075     {
2076         RefreshItem((size_t)m_current);
2077
2078         m_current = -1;
2079     }
2080
2081     event.Skip();
2082 }
2083
2084 void wxMenuBar::OnLeftDown(wxMouseEvent& event)
2085 {
2086     if ( HasCapture() )
2087     {
2088         OnDismiss();
2089
2090         event.Skip();
2091     }
2092     else // we didn't have mouse capture, capture it now
2093     {
2094         m_current = GetMenuFromPoint(event.GetPosition());
2095         if ( m_current == -1 )
2096         {
2097             // unfortunately, we can't prevent wxMSW from giving us the focus,
2098             // so we can only give it back
2099             GiveAwayFocus();
2100         }
2101         else // on item
2102         {
2103             wxLogTrace(_T("mousecapture"), _T("Capturing mouse from wxMenuBar::OnLeftDown"));
2104             CaptureMouse();
2105
2106             // show it as selected
2107             RefreshItem((size_t)m_current);
2108
2109             // show the menu
2110             PopupCurrentMenu(false /* don't select first item - as Windows does */);
2111         }
2112     }
2113 }
2114
2115 void wxMenuBar::OnMouseMove(wxMouseEvent& event)
2116 {
2117     if ( HasCapture() )
2118     {
2119         (void)ProcessMouseEvent(event.GetPosition());
2120     }
2121     else
2122     {
2123         event.Skip();
2124     }
2125 }
2126
2127 bool wxMenuBar::ProcessMouseEvent(const wxPoint& pt)
2128 {
2129     // a hack to ignore the extra mouse events MSW sends us: this is similar to
2130     // wxUSE_MOUSEEVENT_HACK in wxWin itself but it isn't enough for us here as
2131     // we get the messages from different windows (old and new popup menus for
2132     // example)
2133 #ifdef __WXMSW__
2134     static wxPoint s_ptLast;
2135     if ( pt == s_ptLast )
2136     {
2137         return false;
2138     }
2139
2140     s_ptLast = pt;
2141 #endif // __WXMSW__
2142
2143     int currentNew = GetMenuFromPoint(pt);
2144     if ( (currentNew == -1) || (currentNew == m_current) )
2145     {
2146         return false;
2147     }
2148
2149     // select the new active item
2150     DoSelectMenu(currentNew);
2151
2152     // show the menu if we know that we should, even if we hadn't been showing
2153     // it before (this may happen if the previous menu was disabled)
2154     if ( m_shouldShowMenu && !m_menuShown)
2155     {
2156         // open the new menu if the old one we closed had been opened
2157         PopupCurrentMenu(false /* don't select first item - as Windows does */);
2158     }
2159
2160     return true;
2161 }
2162
2163 void wxMenuBar::OnKeyDown(wxKeyEvent& event)
2164 {
2165     // ensure that we have a current item - we might not have it if we're
2166     // given the focus with Alt or F10 press (and under GTK+ the menubar
2167     // somehow gets the keyboard events even when it doesn't have focus...)
2168     if ( m_current == -1 )
2169     {
2170         if ( !HasCapture() )
2171         {
2172             SelectMenu(0);
2173         }
2174         else // we do have capture
2175         {
2176             // we always maintain a valid current item while we're in modal
2177             // state (i.e. have the capture)
2178             wxFAIL_MSG( _T("how did we manage to lose current item?") );
2179
2180             return;
2181         }
2182     }
2183
2184     int key = event.GetKeyCode();
2185
2186     // first let the menu have it
2187     if ( IsShowingMenu() && m_menuShown->ProcessKeyDown(key) )
2188     {
2189         return;
2190     }
2191
2192     // cycle through the menu items when left/right arrows are pressed and open
2193     // the menu when up/down one is
2194     switch ( key )
2195     {
2196         case WXK_ALT:
2197             // Alt must be processed at wxWindow level too
2198             event.Skip();
2199             // fall through
2200
2201         case WXK_ESCAPE:
2202             // remove the selection and give the focus away
2203             if ( m_current != -1 )
2204             {
2205                 if ( IsShowingMenu() )
2206                 {
2207                     DismissMenu();
2208                 }
2209
2210                 OnDismiss();
2211             }
2212             break;
2213
2214         case WXK_LEFT:
2215         case WXK_RIGHT:
2216             {
2217                 size_t count = GetCount();
2218                 if ( count == 1 )
2219                 {
2220                     // the item won't change anyhow
2221                     break;
2222                 }
2223                 //else: otherwise, it will
2224
2225                 // remember if we were showing a menu - if we did, we should
2226                 // show the new menu after changing the item
2227                 bool wasMenuOpened = IsShowingMenu();
2228                 if ( wasMenuOpened )
2229                 {
2230                     DismissMenu();
2231                 }
2232
2233                 // cast is safe as we tested for -1 above
2234                 size_t currentNew = (size_t)m_current;
2235
2236                 if ( key == WXK_LEFT )
2237                 {
2238                     if ( currentNew-- == 0 )
2239                         currentNew = count - 1;
2240                 }
2241                 else // right
2242                 {
2243                     if ( ++currentNew == count )
2244                         currentNew = 0;
2245                 }
2246
2247                 DoSelectMenu(currentNew);
2248
2249                 if ( wasMenuOpened )
2250                 {
2251                     PopupCurrentMenu();
2252                 }
2253             }
2254             break;
2255
2256         case WXK_DOWN:
2257         case WXK_UP:
2258         case WXK_RETURN:
2259             // open the menu
2260             PopupCurrentMenu();
2261             break;
2262
2263         default:
2264             // letters open the corresponding menu
2265             {
2266                 bool unique;
2267                 int idxFound = FindNextItemForAccel(m_current, key, &unique);
2268
2269                 if ( idxFound != -1 )
2270                 {
2271                     if ( IsShowingMenu() )
2272                     {
2273                         DismissMenu();
2274                     }
2275
2276                     DoSelectMenu((size_t)idxFound);
2277
2278                     // if the item is not unique, just select it but don't
2279                     // activate as the user might have wanted to activate
2280                     // another item
2281                     //
2282                     // also, don't try to open a disabled menu
2283                     if ( unique && IsEnabledTop((size_t)idxFound) )
2284                     {
2285                         // open the menu
2286                         PopupCurrentMenu();
2287                     }
2288
2289                     // skip the "event.Skip()" below
2290                     break;
2291                 }
2292             }
2293
2294             event.Skip();
2295     }
2296 }
2297
2298 // ----------------------------------------------------------------------------
2299 // wxMenuBar accel handling
2300 // ----------------------------------------------------------------------------
2301
2302 int wxMenuBar::FindNextItemForAccel(int idxStart, int key, bool *unique) const
2303 {
2304     if ( !wxIsalnum((wxChar)key) )
2305     {
2306         // we only support letters/digits as accels
2307         return -1;
2308     }
2309
2310     // do we have more than one item with this accel?
2311     if ( unique )
2312         *unique = true;
2313
2314     // translate everything to lower case before comparing
2315     wxChar chAccel = (wxChar)wxTolower(key);
2316
2317     // the index of the item with this accel
2318     int idxFound = -1;
2319
2320     // loop through all items searching for the item with this
2321     // accel starting at the item after the current one
2322     int count = GetCount();
2323     int n = idxStart == -1 ? 0 : idxStart + 1;
2324
2325     if ( n == count )
2326     {
2327         // wrap
2328         n = 0;
2329     }
2330
2331     idxStart = n;
2332     for ( ;; )
2333     {
2334         const wxMenuInfo& info = m_menuInfos[n];
2335
2336         int idxAccel = info.GetAccelIndex();
2337         if ( idxAccel != -1 &&
2338              wxTolower(info.GetLabel()[(size_t)idxAccel])
2339                 == chAccel )
2340         {
2341             // ok, found an item with this accel
2342             if ( idxFound == -1 )
2343             {
2344                 // store it but continue searching as we need to
2345                 // know if it's the only item with this accel or if
2346                 // there are more
2347                 idxFound = n;
2348             }
2349             else // we already had found such item
2350             {
2351                 if ( unique )
2352                     *unique = false;
2353
2354                 // no need to continue further, we won't find
2355                 // anything we don't already know
2356                 break;
2357             }
2358         }
2359
2360         // we want to iterate over all items wrapping around if
2361         // necessary
2362         if ( ++n == count )
2363         {
2364             // wrap
2365             n = 0;
2366         }
2367
2368         if ( n == idxStart )
2369         {
2370             // we've seen all items
2371             break;
2372         }
2373     }
2374
2375     return idxFound;
2376 }
2377
2378 #if wxUSE_ACCEL
2379
2380 bool wxMenuBar::ProcessAccelEvent(const wxKeyEvent& event)
2381 {
2382     size_t n = 0;
2383     for ( wxMenuList::compatibility_iterator node = m_menus.GetFirst();
2384           node;
2385           node = node->GetNext(), n++ )
2386     {
2387         // accels of the items in the disabled menus shouldn't work
2388         if ( m_menuInfos[n].IsEnabled() )
2389         {
2390             if ( node->GetData()->ProcessAccelEvent(event) )
2391             {
2392                 // menu processed it
2393                 return true;
2394             }
2395         }
2396     }
2397
2398     // not found
2399     return false;
2400 }
2401
2402 #endif // wxUSE_ACCEL
2403
2404 // ----------------------------------------------------------------------------
2405 // wxMenuBar menus showing
2406 // ----------------------------------------------------------------------------
2407
2408 void wxMenuBar::PopupCurrentMenu(bool selectFirst)
2409 {
2410     wxCHECK_RET( m_current != -1, _T("no menu to popup") );
2411
2412     // forgot to call DismissMenu()?
2413     wxASSERT_MSG( !m_menuShown, _T("shouldn't show two menus at once!") );
2414
2415     // in any case, we should show it - even if we won't
2416     m_shouldShowMenu = true;
2417
2418     if ( IsEnabledTop(m_current) )
2419     {
2420         // remember the menu we show
2421         m_menuShown = GetMenu(m_current);
2422
2423         // we don't show the menu at all if it has no items
2424         if ( !m_menuShown->IsEmpty() )
2425         {
2426             // position it correctly: note that we must use screen coords and
2427             // that we pass 0 as width to position the menu exactly below the
2428             // item, not to the right of it
2429             wxRect rectItem = GetItemRect(m_current);
2430
2431             m_menuShown->SetInvokingWindow(m_frameLast);
2432
2433             m_menuShown->Popup(ClientToScreen(rectItem.GetPosition()),
2434                                wxSize(0, rectItem.GetHeight()),
2435                                selectFirst);
2436         }
2437         else
2438         {
2439             // reset it back as no menu is shown
2440             m_menuShown = NULL;
2441         }
2442     }
2443     //else: don't show disabled menu
2444 }
2445
2446 void wxMenuBar::DismissMenu()
2447 {
2448     wxCHECK_RET( m_menuShown, _T("can't dismiss menu if none is shown") );
2449
2450     m_menuShown->Dismiss();
2451     OnDismissMenu();
2452 }
2453
2454 void wxMenuBar::OnDismissMenu(bool dismissMenuBar)
2455 {
2456     m_shouldShowMenu = false;
2457     m_menuShown = NULL;
2458     if ( dismissMenuBar )
2459     {
2460         OnDismiss();
2461     }
2462 }
2463
2464 void wxMenuBar::OnDismiss()
2465 {
2466     if ( GetCapture() )
2467     {
2468         wxLogTrace(_T("mousecapture"), _T("Releasing mouse from wxMenuBar::OnDismiss"));
2469         GetCapture()->ReleaseMouse();
2470     }
2471
2472     if ( m_current != -1 )
2473     {
2474         size_t current = m_current;
2475         m_current = -1;
2476
2477         RefreshItem(current);
2478     }
2479
2480     GiveAwayFocus();
2481 }
2482
2483 void wxMenuBar::GiveAwayFocus()
2484 {
2485     GetFrame()->SetFocus();
2486 }
2487
2488 // ----------------------------------------------------------------------------
2489 // popup menu support
2490 // ----------------------------------------------------------------------------
2491
2492 wxEventLoop *wxWindow::ms_evtLoopPopup = NULL;
2493
2494 bool wxWindow::DoPopupMenu(wxMenu *menu, int x, int y)
2495 {
2496     wxCHECK_MSG( !ms_evtLoopPopup, false,
2497                  _T("can't show more than one popup menu at a time") );
2498
2499 #ifdef __WXMSW__
2500     // we need to change the cursor before showing the menu as, apparently, no
2501     // cursor changes took place while the mouse is captured
2502     wxCursor cursorOld = GetCursor();
2503     SetCursor(wxCURSOR_ARROW);
2504 #endif // __WXMSW__
2505
2506 #if 0
2507     // flash any delayed log messages before showing the menu, otherwise it
2508     // could be dismissed (because it would lose focus) immediately after being
2509     // shown
2510     wxLog::FlushActive();
2511
2512     // some controls update themselves from OnIdle() call - let them do it
2513     wxTheApp->ProcessIdle();
2514
2515     // if the window hadn't been refreshed yet, the menu can adversely affect
2516     // its next OnPaint() handler execution - i.e. scrolled window refresh
2517     // logic breaks then as it scrolls part of the menu which hadn't been there
2518     // when the update event was generated into view
2519     Update();
2520 #endif // 0
2521
2522     menu->SetInvokingWindow(this);
2523
2524     // wxLogDebug( "Name of invoking window %s", menu->GetInvokingWindow()->GetName().c_str() );
2525
2526     menu->Popup(ClientToScreen(wxPoint(x, y)), wxSize(0,0));
2527
2528     // this is not very useful if the menu was popped up because of the mouse
2529     // click but I think it is nice to do when it appears because of a key
2530     // press (i.e. Windows menu key)
2531     //
2532     // Windows itself doesn't do it, but IMHO this is nice
2533     WarpPointer(x, y);
2534
2535     // we have to redirect all keyboard input to the menu temporarily
2536     PushEventHandler(new wxMenuKbdRedirector(menu));
2537
2538     // enter the local modal loop
2539     ms_evtLoopPopup = new wxEventLoop;
2540     ms_evtLoopPopup->Run();
2541
2542     delete ms_evtLoopPopup;
2543     ms_evtLoopPopup = NULL;
2544
2545     // remove the handler
2546     PopEventHandler(true /* delete it */);
2547
2548     menu->SetInvokingWindow(NULL);
2549
2550 #ifdef __WXMSW__
2551     SetCursor(cursorOld);
2552 #endif // __WXMSW__
2553
2554     return true;
2555 }
2556
2557 void wxWindow::DismissPopupMenu()
2558 {
2559     wxCHECK_RET( ms_evtLoopPopup, _T("no popup menu shown") );
2560
2561     ms_evtLoopPopup->Exit();
2562 }
2563
2564 #endif // wxUSE_MENUS
2565