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