src/univ/menu.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/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 #include "wx/wxprec.h"
  21
  22 #ifdef __BORLANDC__
  23     #pragma hdrstop
  24 #endif
  25
  26 #if wxUSE_MENUS
  27
  28 #include "wx/menu.h"
  29 #include "wx/stockitem.h"
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/dynarray.h"
  33     #include "wx/control.h"      // for FindAccelIndex()
  34     #include "wx/settings.h"
  35     #include "wx/accel.h"
  36     #include "wx/log.h"
  37     #include "wx/frame.h"
  38     #include "wx/dcclient.h"
  39 #endif // WX_PRECOMP
  40
  41 #include "wx/popupwin.h"
  42 #include "wx/evtloop.h"
  43
  44 #include "wx/univ/renderer.h"
  45
  46 #ifdef __WXMSW__
  47     #include "wx/msw/private.h"
  48 #endif // __WXMSW__
  49
  50 typedef wxMenuItemList::compatibility_iterator wxMenuItemIter;
  51
  52 // ----------------------------------------------------------------------------
  53 // wxMenuInfo contains all extra information about top level menus we need
  54 // ----------------------------------------------------------------------------
  55
  56 class WXDLLEXPORT wxMenuInfo
  57 {
  58 public:
  59     // ctor
  60     wxMenuInfo(const wxString& text)
  61     {
  62         SetLabel(text);
  63         SetEnabled();
  64     }
  65
  66     // modifiers
  67
  68     void SetLabel(const wxString& text)
  69     {
  70         // remember the accel char (may be -1 if none)
  71         m_indexAccel = wxControl::FindAccelIndex(text, &m_label);
  72
  73         // calculate the width later, after the menu bar is created
  74         m_width = 0;
  75     }
  76
  77     void SetEnabled(bool enabled = true) { m_isEnabled = enabled; }
  78
  79     // accessors
  80
  81     const wxString& GetLabel() const { return m_label; }
  82     bool IsEnabled() const { return m_isEnabled; }
  83     wxCoord GetWidth(wxMenuBar *menubar) const
  84     {
  85         if ( !m_width )
  86         {
  87             wxConstCast(this, wxMenuInfo)->CalcWidth(menubar);
  88         }
  89
  90         return m_width;
  91     }
  92
  93     int GetAccelIndex() const { return m_indexAccel; }
  94
  95 private:
  96     void CalcWidth(wxMenuBar *menubar)
  97     {
  98         wxSize size;
  99         wxClientDC dc(menubar);
 100         dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
 101         dc.GetTextExtent(m_label, &size.x, &size.y);
 102
 103         // adjust for the renderer we use and store the width
 104         m_width = menubar->GetRenderer()->GetMenuBarItemSize(size).x;
 105     }
 106
 107     wxString m_label;
 108     wxCoord m_width;
 109     int m_indexAccel;
 110     bool m_isEnabled;
 111 };
 112
 113 #include "wx/arrimpl.cpp"
 114
 115 WX_DEFINE_OBJARRAY(wxMenuInfoArray);
 116
 117 // ----------------------------------------------------------------------------
 118 // wxPopupMenuWindow: a popup window showing a menu
 119 // ----------------------------------------------------------------------------
 120
 121 class wxPopupMenuWindow : public wxPopupTransientWindow
 122 {
 123 public:
 124     wxPopupMenuWindow(wxWindow *parent, wxMenu *menu);
 125
 126     virtual ~wxPopupMenuWindow();
 127
 128     // override the base class version to select the first item initially
 129     virtual void Popup(wxWindow *focus = NULL);
 130
 131     // override the base class version to dismiss any open submenus
 132     virtual void Dismiss();
 133
 134     // called when a submenu is dismissed
 135     void OnSubmenuDismiss(bool dismissParent);
 136
 137     // the default wxMSW wxPopupTransientWindow::OnIdle disables the capture
 138     // when the cursor is inside the popup, which dsables the menu tracking
 139     // so override it to do nothing
 140 #ifdef __WXMSW__
 141     void OnIdle(wxIdleEvent& WXUNUSED(event)) { }
 142 #endif
 143
 144     // get the currently selected item (may be NULL)
 145     wxMenuItem *GetCurrentItem() const
 146     {
 147         return m_nodeCurrent ? m_nodeCurrent->GetData() : NULL;
 148     }
 149
 150     // find the menu item at given position
 151     wxMenuItemIter GetMenuItemFromPoint(const wxPoint& pt) const;
 152
 153     // refresh the given item
 154     void RefreshItem(wxMenuItem *item);
 155
 156     // preselect the first item
 157     void SelectFirst() { SetCurrentItem(m_menu->GetMenuItems().GetFirst()); }
 158
 159     // process the key event, return true if done
 160     bool ProcessKeyDown(int key);
 161
 162     // process mouse move event
 163     void ProcessMouseMove(const wxPoint& pt);
 164
 165     // don't dismiss the popup window if the parent menu was clicked
 166     virtual bool ProcessLeftDown(wxMouseEvent& event);
 167
 168 protected:
 169     // how did we perform this operation?
 170     enum InputMethod
 171     {
 172         WithKeyboard,
 173         WithMouse
 174     };
 175
 176     // notify the menu when the window disappears from screen
 177     virtual void OnDismiss();
 178
 179     // draw the menu inside this window
 180     virtual void DoDraw(wxControlRenderer *renderer);
 181
 182     // event handlers
 183     void OnLeftUp(wxMouseEvent& event);
 184     void OnMouseMove(wxMouseEvent& event);
 185     void OnMouseLeave(wxMouseEvent& event);
 186     void OnKeyDown(wxKeyEvent& event);
 187
 188     // reset the current item and node
 189     void ResetCurrent();
 190
 191     // set the current node and item without refreshing anything
 192     void SetCurrentItem(wxMenuItemIter node);
 193
 194     // change the current item refreshing the old and new items
 195     void ChangeCurrent(wxMenuItemIter node);
 196
 197     // activate item, i.e. call either ClickItem() or OpenSubmenu() depending
 198     // on what it is, return true if something was done (i.e. it's not a
 199     // separator...)
 200     bool ActivateItem(wxMenuItem *item, InputMethod how = WithKeyboard);
 201
 202     // send the event about the item click
 203     void ClickItem(wxMenuItem *item);
 204
 205     // show the submenu for this item
 206     void OpenSubmenu(wxMenuItem *item, InputMethod how = WithKeyboard);
 207
 208     // can this tiem be opened?
 209     bool CanOpen(wxMenuItem *item)
 210     {
 211         return item && item->IsEnabled() && item->IsSubMenu();
 212     }
 213
 214     // dismiss the menu and all parent menus too
 215     void DismissAndNotify();
 216
 217     // react to dimissing this menu and also dismiss the parent if
 218     // dismissParent
 219     void HandleDismiss(bool dismissParent);
 220
 221     // do we have an open submenu?
 222     bool HasOpenSubmenu() const { return m_hasOpenSubMenu; }
 223
 224     // get previous node after the current one
 225     wxMenuItemIter GetPrevNode() const;
 226
 227     // get previous node before the given one, wrapping if it's the first one
 228     wxMenuItemIter GetPrevNode(wxMenuItemIter node) const;
 229
 230     // get next node after the current one
 231     wxMenuItemIter GetNextNode() const;
 232
 233     // get next node after the given one, wrapping if it's the last one
 234     wxMenuItemIter GetNextNode(wxMenuItemIter node) const;
 235
 236 private:
 237     // the menu we show
 238     wxMenu *m_menu;
 239
 240     // the menu node corresponding to the current item
 241     wxMenuItemIter m_nodeCurrent;
 242
 243     // do we currently have an opened submenu?
 244     bool m_hasOpenSubMenu;
 245
 246     DECLARE_EVENT_TABLE()
 247 };
 248
 249 // ----------------------------------------------------------------------------
 250 // wxMenuKbdRedirector: an event handler which redirects kbd input to wxMenu
 251 // ----------------------------------------------------------------------------
 252
 253 class wxMenuKbdRedirector : public wxEvtHandler
 254 {
 255 public:
 256     wxMenuKbdRedirector(wxMenu *menu) { m_menu = menu; }
 257
 258     virtual bool ProcessEvent(wxEvent& event)
 259     {
 260         if ( event.GetEventType() == wxEVT_KEY_DOWN )
 261         {
 262             return m_menu->ProcessKeyDown(((wxKeyEvent &)event).GetKeyCode());
 263         }
 264         else
 265         {
 266             // return false;
 267
 268             return wxEvtHandler::ProcessEvent(event);
 269         }
 270     }
 271
 272 private:
 273     wxMenu *m_menu;
 274 };
 275
 276 // ----------------------------------------------------------------------------
 277 // wxWin macros
 278 // ----------------------------------------------------------------------------
 279
 280 IMPLEMENT_DYNAMIC_CLASS(wxMenu, wxEvtHandler)
 281 IMPLEMENT_DYNAMIC_CLASS(wxMenuBar, wxWindow)
 282 IMPLEMENT_DYNAMIC_CLASS(wxMenuItem, wxObject)
 283
 284 BEGIN_EVENT_TABLE(wxPopupMenuWindow, wxPopupTransientWindow)
 285     EVT_KEY_DOWN(wxPopupMenuWindow::OnKeyDown)
 286
 287     EVT_LEFT_UP(wxPopupMenuWindow::OnLeftUp)
 288     EVT_MOTION(wxPopupMenuWindow::OnMouseMove)
 289     EVT_LEAVE_WINDOW(wxPopupMenuWindow::OnMouseLeave)
 290 #ifdef __WXMSW__
 291     EVT_IDLE(wxPopupMenuWindow::OnIdle)
 292 #endif
 293 END_EVENT_TABLE()
 294
 295 BEGIN_EVENT_TABLE(wxMenuBar, wxMenuBarBase)
 296     EVT_KILL_FOCUS(wxMenuBar::OnKillFocus)
 297
 298     EVT_KEY_DOWN(wxMenuBar::OnKeyDown)
 299
 300     EVT_LEFT_DOWN(wxMenuBar::OnLeftDown)
 301     EVT_MOTION(wxMenuBar::OnMouseMove)
 302 END_EVENT_TABLE()
 303
 304 // ============================================================================
 305 // implementation
 306 // ============================================================================
 307
 308 // ----------------------------------------------------------------------------
 309 // wxPopupMenuWindow
 310 // ----------------------------------------------------------------------------
 311
 312 wxPopupMenuWindow::wxPopupMenuWindow(wxWindow *parent, wxMenu *menu)
 313 {
 314     m_menu = menu;
 315     m_hasOpenSubMenu = false;
 316
 317     ResetCurrent();
 318
 319     (void)Create(parent, wxBORDER_RAISED);
 320
 321     SetCursor(wxCURSOR_ARROW);
 322 }
 323
 324 wxPopupMenuWindow::~wxPopupMenuWindow()
 325 {
 326     // When m_popupMenu in wxMenu is deleted because it
 327     // is a child of an old menu bar being deleted (note: it does
 328     // not get destroyed by the wxMenu destructor, but
 329     // by DestroyChildren()), m_popupMenu should be reset to NULL.
 330
 331     m_menu->m_popupMenu = NULL;
 332 }
 333
 334 // ----------------------------------------------------------------------------
 335 // wxPopupMenuWindow current item/node handling
 336 // ----------------------------------------------------------------------------
 337
 338 void wxPopupMenuWindow::ResetCurrent()
 339 {
 340     SetCurrentItem(wxMenuItemIter());
 341 }
 342
 343 void wxPopupMenuWindow::SetCurrentItem(wxMenuItemIter node)
 344 {
 345     m_nodeCurrent = node;
 346 }
 347
 348 void wxPopupMenuWindow::ChangeCurrent(wxMenuItemIter node)
 349 {
 350     if ( !m_nodeCurrent || (node != m_nodeCurrent) )
 351     {
 352         wxMenuItemIter nodeOldCurrent = m_nodeCurrent;
 353
 354         m_nodeCurrent = node;
 355
 356         if ( nodeOldCurrent )
 357         {
 358             wxMenuItem *item = nodeOldCurrent->GetData();
 359             wxCHECK_RET( item, _T("no current item?") );
 360
 361             // if it was the currently opened menu, close it
 362             if ( item->IsSubMenu() && item->GetSubMenu()->IsShown() )
 363             {
 364                 item->GetSubMenu()->Dismiss();
 365                 OnSubmenuDismiss( false );
 366             }
 367
 368             RefreshItem(item);
 369         }
 370
 371         if ( m_nodeCurrent )
 372             RefreshItem(m_nodeCurrent->GetData());
 373     }
 374 }
 375
 376 wxMenuItemIter wxPopupMenuWindow::GetPrevNode() const
 377 {
 378     // return the last node if there had been no previously selected one
 379     return m_nodeCurrent ? GetPrevNode(m_nodeCurrent)
 380                          : wxMenuItemIter(m_menu->GetMenuItems().GetLast());
 381 }
 382
 383 wxMenuItemIter
 384 wxPopupMenuWindow::GetPrevNode(wxMenuItemIter node) const
 385 {
 386     if ( node )
 387     {
 388         node = node->GetPrevious();
 389         if ( !node )
 390         {
 391             node = m_menu->GetMenuItems().GetLast();
 392         }
 393     }
 394     //else: the menu is empty
 395
 396     return node;
 397 }
 398
 399 wxMenuItemIter wxPopupMenuWindow::GetNextNode() const
 400 {
 401     // return the first node if there had been no previously selected one
 402     return m_nodeCurrent ? GetNextNode(m_nodeCurrent)
 403                          : wxMenuItemIter(m_menu->GetMenuItems().GetFirst());
 404 }
 405
 406 wxMenuItemIter
 407 wxPopupMenuWindow::GetNextNode(wxMenuItemIter node) const
 408 {
 409     if ( node )
 410     {
 411         node = node->GetNext();
 412         if ( !node )
 413         {
 414             node = m_menu->GetMenuItems().GetFirst();
 415         }
 416     }
 417     //else: the menu is empty
 418
 419     return node;
 420 }
 421
 422 // ----------------------------------------------------------------------------
 423 // wxPopupMenuWindow popup/dismiss
 424 // ----------------------------------------------------------------------------
 425
 426 void wxPopupMenuWindow::Popup(wxWindow *focus)
 427 {
 428     // check that the current item had been properly reset before
 429     wxASSERT_MSG( !m_nodeCurrent ||
 430                   m_nodeCurrent == m_menu->GetMenuItems().GetFirst(),
 431                   _T("menu current item preselected incorrectly") );
 432
 433     wxPopupTransientWindow::Popup(focus);
 434
 435     // the base class no-longer captures the mouse automatically when Popup
 436     // is called, so do it here to allow the menu tracking to work
 437     if ( !HasCapture() )
 438         CaptureMouse();
 439
 440 #ifdef __WXMSW__
 441     // ensure that this window is really on top of everything: without using
 442     // SetWindowPos() it can be covered by its parent menu which is not
 443     // really what we want
 444     wxMenu *menuParent = m_menu->GetParent();
 445     if ( menuParent )
 446     {
 447         wxPopupMenuWindow *win = menuParent->m_popupMenu;
 448
 449         // if we're shown, the parent menu must be also shown
 450         wxCHECK_RET( win, _T("parent menu is not shown?") );
 451
 452         if ( !::SetWindowPos(GetHwndOf(win), GetHwnd(),
 453                              0, 0, 0, 0,
 454                              SWP_NOMOVE | SWP_NOSIZE | SWP_NOREDRAW) )
 455         {
 456             wxLogLastError(_T("SetWindowPos(HWND_TOP)"));
 457         }
 458
 459         Refresh();
 460     }
 461 #endif // __WXMSW__
 462 }
 463
 464 void wxPopupMenuWindow::Dismiss()
 465 {
 466     if ( HasOpenSubmenu() )
 467     {
 468         wxMenuItem *item = GetCurrentItem();
 469         wxCHECK_RET( item && item->IsSubMenu(), _T("where is our open submenu?") );
 470
 471         wxPopupMenuWindow *win = item->GetSubMenu()->m_popupMenu;
 472         wxCHECK_RET( win, _T("opened submenu is not opened?") );
 473
 474         win->Dismiss();
 475         OnSubmenuDismiss( false );
 476     }
 477
 478     wxPopupTransientWindow::Dismiss();
 479
 480     ResetCurrent();
 481 }
 482
 483 void wxPopupMenuWindow::OnDismiss()
 484 {
 485     // when we are dismissed because the user clicked elsewhere or we lost
 486     // focus in any other way, hide the parent menu as well
 487     HandleDismiss(true);
 488 }
 489
 490 void wxPopupMenuWindow::OnSubmenuDismiss(bool WXUNUSED(dismissParent))
 491 {
 492     m_hasOpenSubMenu = false;
 493 }
 494
 495 void wxPopupMenuWindow::HandleDismiss(bool dismissParent)
 496 {
 497     m_menu->OnDismiss(dismissParent);
 498 }
 499
 500 void wxPopupMenuWindow::DismissAndNotify()
 501 {
 502     Dismiss();
 503     HandleDismiss(true);
 504 }
 505
 506 // ----------------------------------------------------------------------------
 507 // wxPopupMenuWindow geometry
 508 // ----------------------------------------------------------------------------
 509
 510 wxMenuItemIter
 511 wxPopupMenuWindow::GetMenuItemFromPoint(const wxPoint& pt) const
 512 {
 513     // we only use the y coord normally, but still check x in case the point is
 514     // outside the window completely
 515     if ( wxWindow::HitTest(pt) == wxHT_WINDOW_INSIDE )
 516     {
 517         wxCoord y = 0;
 518         for ( wxMenuItemIter node = m_menu->GetMenuItems().GetFirst();
 519               node;
 520               node = node->GetNext() )
 521         {
 522             wxMenuItem *item = node->GetData();
 523             y += item->GetHeight();
 524             if ( y > pt.y )
 525             {
 526                 // found
 527                 return node;
 528             }
 529         }
 530     }
 531
 532     return wxMenuItemIter();
 533 }
 534
 535 // ----------------------------------------------------------------------------
 536 // wxPopupMenuWindow drawing
 537 // ----------------------------------------------------------------------------
 538
 539 void wxPopupMenuWindow::RefreshItem(wxMenuItem *item)
 540 {
 541     wxCHECK_RET( item, _T("can't refresh NULL item") );
 542
 543     wxASSERT_MSG( IsShown(), _T("can't refresh menu which is not shown") );
 544
 545     // FIXME: -1 here because of SetLogicalOrigin(1, 1) in DoDraw()
 546     RefreshRect(wxRect(0, item->GetPosition() - 1,
 547                 m_menu->GetGeometryInfo().GetSize().x, item->GetHeight()));
 548 }
 549
 550 void wxPopupMenuWindow::DoDraw(wxControlRenderer *renderer)
 551 {
 552     // no clipping so far - do we need it? I don't think so as the menu is
 553     // never partially covered as it is always on top of everything
 554
 555     wxDC& dc = renderer->GetDC();
 556     dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
 557
 558     // FIXME: this should be done in the renderer, however when it is fixed
 559     //        wxPopupMenuWindow::RefreshItem() should be changed too!
 560     dc.SetLogicalOrigin(1, 1);
 561
 562     wxRenderer *rend = renderer->GetRenderer();
 563
 564     wxCoord y = 0;
 565     const wxMenuGeometryInfo& gi = m_menu->GetGeometryInfo();
 566     for ( wxMenuItemIter node = m_menu->GetMenuItems().GetFirst();
 567           node;
 568           node = node->GetNext() )
 569     {
 570         wxMenuItem *item = node->GetData();
 571
 572         if ( item->IsSeparator() )
 573         {
 574             rend->DrawMenuSeparator(dc, y, gi);
 575         }
 576         else // not a separator
 577         {
 578             int flags = 0;
 579             if ( item->IsCheckable() )
 580             {
 581                 flags |= wxCONTROL_CHECKABLE;
 582
 583                 if ( item->IsChecked() )
 584                 {
 585                     flags |= wxCONTROL_CHECKED;
 586                 }
 587             }
 588
 589             if ( !item->IsEnabled() )
 590                 flags |= wxCONTROL_DISABLED;
 591
 592             if ( item->IsSubMenu() )
 593                 flags |= wxCONTROL_ISSUBMENU;
 594
 595             if ( item == GetCurrentItem() )
 596                 flags |= wxCONTROL_SELECTED;
 597
 598             wxBitmap bmp;
 599
 600             if ( !item->IsEnabled() )
 601             {
 602                 bmp = item->GetDisabledBitmap();
 603             }
 604
 605             if ( !bmp.Ok() )
 606             {
 607                 // strangely enough, for unchecked item we use the
 608                 // "checked" bitmap because this is the default one - this
 609                 // explains this strange boolean expression
 610                 bmp = item->GetBitmap(!item->IsCheckable() || item->IsChecked());
 611             }
 612
 613             rend->DrawMenuItem
 614                   (
 615                      dc,
 616                      y,
 617                      gi,
 618                      item->GetLabel(),
 619                      item->GetAccelString(),
 620                      bmp,
 621                      flags,
 622                      item->GetAccelIndex()
 623                   );
 624         }
 625
 626         y += item->GetHeight();
 627     }
 628 }
 629
 630 // ----------------------------------------------------------------------------
 631 // wxPopupMenuWindow actions
 632 // ----------------------------------------------------------------------------
 633
 634 void wxPopupMenuWindow::ClickItem(wxMenuItem *item)
 635 {
 636     wxCHECK_RET( item, _T("can't click NULL item") );
 637
 638     wxASSERT_MSG( !item->IsSeparator() && !item->IsSubMenu(),
 639                   _T("can't click this item") );
 640
 641     wxMenu* menu = m_menu;
 642
 643     // close all menus
 644     DismissAndNotify();
 645
 646     menu->ClickItem(item);
 647 }
 648
 649 void wxPopupMenuWindow::OpenSubmenu(wxMenuItem *item, InputMethod how)
 650 {
 651     wxCHECK_RET( item, _T("can't open NULL submenu") );
 652
 653     wxMenu *submenu = item->GetSubMenu();
 654     wxCHECK_RET( submenu, _T("can only open submenus!") );
 655
 656     // FIXME: should take into account the border width
 657     submenu->Popup(ClientToScreen(wxPoint(0, item->GetPosition())),
 658                    wxSize(m_menu->GetGeometryInfo().GetSize().x, 0),
 659                    how == WithKeyboard /* preselect first item then */);
 660
 661     m_hasOpenSubMenu = true;
 662 }
 663
 664 bool wxPopupMenuWindow::ActivateItem(wxMenuItem *item, InputMethod how)
 665 {
 666     // don't activate disabled items
 667     if ( !item || !item->IsEnabled() )
 668     {
 669         return false;
 670     }
 671
 672     // normal menu items generate commands, submenus can be opened and
 673     // the separators don't do anything
 674     if ( item->IsSubMenu() )
 675     {
 676         OpenSubmenu(item, how);
 677     }
 678     else if ( !item->IsSeparator() )
 679     {
 680         ClickItem(item);
 681     }
 682     else // separator, can't activate
 683     {
 684         return false;
 685     }
 686
 687     return true;
 688 }
 689
 690 // ----------------------------------------------------------------------------
 691 // wxPopupMenuWindow input handling
 692 // ----------------------------------------------------------------------------
 693
 694 bool wxPopupMenuWindow::ProcessLeftDown(wxMouseEvent& event)
 695 {
 696     // wxPopupWindowHandler dismisses the window when the mouse is clicked
 697     // outside it which is usually just fine, but there is one case when we
 698     // don't want to do it: if the mouse was clicked on the parent submenu item
 699     // which opens this menu, so check for it
 700
 701     wxPoint pos = event.GetPosition();
 702     if ( HitTest(pos.x, pos.y) == wxHT_WINDOW_OUTSIDE )
 703     {
 704         wxMenu *menu = m_menu->GetParent();
 705         if ( menu )
 706         {
 707             wxPopupMenuWindow *win = menu->m_popupMenu;
 708
 709             wxCHECK_MSG( win, false, _T("parent menu not shown?") );
 710
 711             pos = ClientToScreen(pos);
 712             if ( win->GetMenuItemFromPoint(win->ScreenToClient(pos)) )
 713             {
 714                 // eat the event
 715                 return true;
 716             }
 717             //else: it is outside the parent menu as well, do dismiss this one
 718         }
 719     }
 720
 721     return false;
 722 }
 723
 724 void wxPopupMenuWindow::OnLeftUp(wxMouseEvent& event)
 725 {
 726     wxMenuItemIter node = GetMenuItemFromPoint(event.GetPosition());
 727     if ( node )
 728     {
 729         ActivateItem(node->GetData(), WithMouse);
 730     }
 731 }
 732
 733 void wxPopupMenuWindow::OnMouseMove(wxMouseEvent& event)
 734 {
 735     const wxPoint pt = event.GetPosition();
 736
 737     // we need to ignore extra mouse events: example when this happens is when
 738     // the mouse is on the menu and we open a submenu from keyboard - Windows
 739     // then sends us a dummy mouse move event, we (correctly) determine that it
 740     // happens in the parent menu and so immediately close the just opened
 741     // submenu!
 742 #ifdef __WXMSW__
 743     static wxPoint s_ptLast;
 744     wxPoint ptCur = ClientToScreen(pt);
 745     if ( ptCur == s_ptLast )
 746     {
 747         return;
 748     }
 749
 750     s_ptLast = ptCur;
 751 #endif // __WXMSW__
 752
 753     ProcessMouseMove(pt);
 754
 755     event.Skip();
 756 }
 757
 758 void wxPopupMenuWindow::ProcessMouseMove(const wxPoint& pt)
 759 {
 760     wxMenuItemIter node = GetMenuItemFromPoint(pt);
 761
 762     // don't reset current to NULL here, we only do it when the mouse leaves
 763     // the window (see below)
 764     if ( node )
 765     {
 766         if ( !m_nodeCurrent || (node != m_nodeCurrent) )
 767         {
 768             ChangeCurrent(node);
 769
 770             wxMenuItem *item = GetCurrentItem();
 771             if ( CanOpen(item) )
 772             {
 773                 OpenSubmenu(item, WithMouse);
 774             }
 775         }
 776         //else: same item, nothing to do
 777     }
 778     else // not on an item
 779     {
 780         // the last open submenu forwards the mouse move messages to its
 781         // parent, so if the mouse moves to another item of the parent menu,
 782         // this menu is closed and this other item is selected - in the similar
 783         // manner, the top menu forwards the mouse moves to the menubar which
 784         // allows to select another top level menu by just moving the mouse
 785
 786         // we need to translate our client coords to the client coords of the
 787         // window we forward this event to
 788         wxPoint ptScreen = ClientToScreen(pt);
 789
 790         // if the mouse is outside this menu, let the parent one to
 791         // process it
 792         wxMenu *menuParent = m_menu->GetParent();
 793         if ( menuParent )
 794         {
 795             wxPopupMenuWindow *win = menuParent->m_popupMenu;
 796
 797             // if we're shown, the parent menu must be also shown
 798             wxCHECK_RET( win, _T("parent menu is not shown?") );
 799
 800             win->ProcessMouseMove(win->ScreenToClient(ptScreen));
 801         }
 802         else // no parent menu
 803         {
 804             wxMenuBar *menubar = m_menu->GetMenuBar();
 805             if ( menubar )
 806             {
 807                 if ( menubar->ProcessMouseEvent(
 808                             menubar->ScreenToClient(ptScreen)) )
 809                 {
 810                     // menubar has closed this menu and opened another one, probably
 811                     return;
 812                 }
 813             }
 814         }
 815         //else: top level popup menu, no other processing to do
 816     }
 817 }
 818
 819 void wxPopupMenuWindow::OnMouseLeave(wxMouseEvent& event)
 820 {
 821     // due to the artefact of mouse events generation under MSW, we actually
 822     // may get the mouse leave event after the menu had been already dismissed
 823     // and calling ChangeCurrent() would then assert, so don't do it
 824     if ( IsShown() )
 825     {
 826         // we shouldn't change the current them if our submenu is opened and
 827         // mouse moved there, in this case the submenu is responsable for
 828         // handling it
 829         bool resetCurrent;
 830         if ( HasOpenSubmenu() )
 831         {
 832             wxMenuItem *item = GetCurrentItem();
 833             wxCHECK_RET( CanOpen(item), _T("where is our open submenu?") );
 834
 835             wxPopupMenuWindow *win = item->GetSubMenu()->m_popupMenu;
 836             wxCHECK_RET( win, _T("submenu is opened but not shown?") );
 837
 838             // only handle this event if the mouse is not inside the submenu
 839             wxPoint pt = ClientToScreen(event.GetPosition());
 840             resetCurrent =
 841                 win->HitTest(win->ScreenToClient(pt)) == wxHT_WINDOW_OUTSIDE;
 842         }
 843         else
 844         {
 845             // this menu is the last opened
 846             resetCurrent = true;
 847         }
 848
 849         if ( resetCurrent )
 850         {
 851             ChangeCurrent(wxMenuItemIter());
 852         }
 853     }
 854
 855     event.Skip();
 856 }
 857
 858 void wxPopupMenuWindow::OnKeyDown(wxKeyEvent& event)
 859 {
 860     wxMenuBar *menubar = m_menu->GetMenuBar();
 861
 862     if ( menubar )
 863     {
 864         menubar->ProcessEvent(event);
 865     }
 866     else if ( !ProcessKeyDown(event.GetKeyCode()) )
 867     {
 868         event.Skip();
 869     }
 870 }
 871
 872 bool wxPopupMenuWindow::ProcessKeyDown(int key)
 873 {
 874     wxMenuItem *item = GetCurrentItem();
 875
 876     // first let the opened submenu to have it (no test for IsEnabled() here,
 877     // the keys navigate even in a disabled submenu if we had somehow managed
 878     // to open it inspit of this)
 879     if ( HasOpenSubmenu() )
 880     {
 881         wxCHECK_MSG( CanOpen(item), false,
 882                      _T("has open submenu but another item selected?") );
 883
 884         if ( item->GetSubMenu()->ProcessKeyDown(key) )
 885             return true;
 886     }
 887
 888     bool processed = true;
 889
 890     // handle the up/down arrows, home, end, esc and return here, pass the
 891     // left/right arrows to the menu bar except when the right arrow can be
 892     // used to open a submenu
 893     switch ( key )
 894     {
 895         case WXK_LEFT:
 896             // if we're not a top level menu, close us, else leave this to the
 897             // menubar
 898             if ( !m_menu->GetParent() )
 899             {
 900                 processed = false;
 901                 break;
 902             }
 903
 904             // fall through
 905
 906         case WXK_ESCAPE:
 907             // close just this menu
 908             Dismiss();
 909             HandleDismiss(false);
 910             break;
 911
 912         case WXK_RETURN:
 913             processed = ActivateItem(item);
 914             break;
 915
 916         case WXK_HOME:
 917             ChangeCurrent(m_menu->GetMenuItems().GetFirst());
 918             break;
 919
 920         case WXK_END:
 921             ChangeCurrent(m_menu->GetMenuItems().GetLast());
 922             break;
 923
 924         case WXK_UP:
 925         case WXK_DOWN:
 926             {
 927                 bool up = key == WXK_UP;
 928
 929                 wxMenuItemIter nodeStart = up ? GetPrevNode() : GetNextNode(),
 930                                node = nodeStart;
 931                 while ( node && node->GetData()->IsSeparator() )
 932                 {
 933                     node = up ? GetPrevNode(node) : GetNextNode(node);
 934
 935                     if ( node == nodeStart )
 936                     {
 937                         // nothing but separators and disabled items in this
 938                         // menu, break out
 939                         node = wxMenuItemIter();
 940                     }
 941                 }
 942
 943                 if ( node )
 944                 {
 945                     ChangeCurrent(node);
 946                 }
 947                 else
 948                 {
 949                     processed = false;
 950                 }
 951             }
 952             break;
 953
 954         case WXK_RIGHT:
 955             // don't try to reopen an already opened menu
 956             if ( !HasOpenSubmenu() && CanOpen(item) )
 957             {
 958                 OpenSubmenu(item);
 959             }
 960             else
 961             {
 962                 processed = false;
 963             }
 964             break;
 965
 966         default:
 967             // look for the menu item starting with this letter
 968             if ( wxIsalnum((wxChar)key) )
 969             {
 970                 // we want to start from the item after this one because
 971                 // if we're already on the item with the given accel we want to
 972                 // go to the next one, not to stay in place
 973                 wxMenuItemIter nodeStart = GetNextNode();
 974
 975                 // do we have more than one item with this accel?
 976                 bool notUnique = false;
 977
 978                 // translate everything to lower case before comparing
 979                 wxChar chAccel = (wxChar)wxTolower(key);
 980
 981                 // loop through all items searching for the item with this
 982                 // accel
 983                 wxMenuItemIter nodeFound,
 984                                node = nodeStart;
 985                 for ( ;; )
 986                 {
 987                     item = node->GetData();
 988
 989                     int idxAccel = item->GetAccelIndex();
 990                     if ( idxAccel != -1 &&
 991                          wxTolower(item->GetLabel()[(size_t)idxAccel])
 992                             == chAccel )
 993                     {
 994                         // ok, found an item with this accel
 995                         if ( !nodeFound )
 996                         {
 997                             // store it but continue searching as we need to
 998                             // know if it's the only item with this accel or if
 999                             // there are more
1000                             nodeFound = node;
1001                         }
1002                         else // we already had found such item
1003                         {
1004                             notUnique = true;
1005
1006                             // no need to continue further, we won't find
1007                             // anything we don't already know
1008                             break;
1009                         }
1010                     }
1011
1012                     // we want to iterate over all items wrapping around if
1013                     // necessary
1014                     node = GetNextNode(node);
1015                     if ( node == nodeStart )
1016                     {
1017                         // we've seen all nodes
1018                         break;
1019                     }
1020                 }
1021
1022                 if ( nodeFound )
1023                 {
1024                     item = nodeFound->GetData();
1025
1026                     // go to this item anyhow
1027                     ChangeCurrent(nodeFound);
1028
1029                     if ( !notUnique && item->IsEnabled() )
1030                     {
1031                         // unique item with this accel - activate it
1032                         processed = ActivateItem(item);
1033                     }
1034                     //else: just select it but don't activate as the user might
1035                     //      have wanted to activate another item
1036
1037                     // skip "processed = false" below
1038                     break;
1039                 }
1040             }
1041
1042             processed = false;
1043     }
1044
1045     return processed;
1046 }
1047
1048 // ----------------------------------------------------------------------------
1049 // wxMenu
1050 // ----------------------------------------------------------------------------
1051
1052 void wxMenu::Init()
1053 {
1054     m_geometry = NULL;
1055
1056     m_popupMenu = NULL;
1057
1058     m_startRadioGroup = -1;
1059 }
1060
1061 wxMenu::~wxMenu()
1062 {
1063     delete m_geometry;
1064     delete m_popupMenu;
1065 }
1066
1067 // ----------------------------------------------------------------------------
1068 // wxMenu and wxMenuGeometryInfo
1069 // ----------------------------------------------------------------------------
1070
1071 wxMenuGeometryInfo::~wxMenuGeometryInfo()
1072 {
1073 }
1074
1075 const wxMenuGeometryInfo& wxMenu::GetGeometryInfo() const
1076 {
1077     if ( !m_geometry )
1078     {
1079         if ( m_popupMenu )
1080         {
1081             wxConstCast(this, wxMenu)->m_geometry =
1082                 m_popupMenu->GetRenderer()->GetMenuGeometry(m_popupMenu, *this);
1083         }
1084         else
1085         {
1086             wxFAIL_MSG( _T("can't get geometry without window") );
1087         }
1088     }
1089
1090     return *m_geometry;
1091 }
1092
1093 void wxMenu::InvalidateGeometryInfo()
1094 {
1095     if ( m_geometry )
1096     {
1097         delete m_geometry;
1098         m_geometry = NULL;
1099     }
1100 }
1101
1102 // ----------------------------------------------------------------------------
1103 // wxMenu adding/removing items
1104 // ----------------------------------------------------------------------------
1105
1106 void wxMenu::OnItemAdded(wxMenuItem *item)
1107 {
1108     InvalidateGeometryInfo();
1109
1110 #if wxUSE_ACCEL
1111     AddAccelFor(item);
1112 #endif // wxUSE_ACCEL
1113
1114     // the submenus of a popup menu should have the same invoking window as it
1115     // has
1116     if ( m_invokingWindow && item->IsSubMenu() )
1117     {
1118         item->GetSubMenu()->SetInvokingWindow(m_invokingWindow);
1119     }
1120 }
1121
1122 void wxMenu::EndRadioGroup()
1123 {
1124     // we're not inside a radio group any longer
1125     m_startRadioGroup = -1;
1126 }
1127
1128 wxMenuItem* wxMenu::DoAppend(wxMenuItem *item)
1129 {
1130     if ( item->GetKind() == wxITEM_RADIO )
1131     {
1132         int count = GetMenuItemCount();
1133
1134         if ( m_startRadioGroup == -1 )
1135         {
1136             // start a new radio group
1137             m_startRadioGroup = count;
1138
1139             // for now it has just one element
1140             item->SetAsRadioGroupStart();
1141             item->SetRadioGroupEnd(m_startRadioGroup);
1142         }
1143         else // extend the current radio group
1144         {
1145             // we need to update its end item
1146             item->SetRadioGroupStart(m_startRadioGroup);
1147             wxMenuItemIter node = GetMenuItems().Item(m_startRadioGroup);
1148
1149             if ( node )
1150             {
1151                 node->GetData()->SetRadioGroupEnd(count);
1152             }
1153             else
1154             {
1155                 wxFAIL_MSG( _T("where is the radio group start item?") );
1156             }
1157         }
1158     }
1159     else // not a radio item
1160     {
1161         EndRadioGroup();
1162     }
1163
1164     if ( !wxMenuBase::DoAppend(item) )
1165         return NULL;
1166
1167     OnItemAdded(item);
1168
1169     return item;
1170 }
1171
1172 wxMenuItem* wxMenu::DoInsert(size_t pos, wxMenuItem *item)
1173 {
1174     if ( !wxMenuBase::DoInsert(pos, item) )
1175         return NULL;
1176
1177     OnItemAdded(item);
1178
1179     return item;
1180 }
1181
1182 wxMenuItem *wxMenu::DoRemove(wxMenuItem *item)
1183 {
1184     wxMenuItem *itemOld = wxMenuBase::DoRemove(item);
1185
1186     if ( itemOld )
1187     {
1188         InvalidateGeometryInfo();
1189
1190 #if wxUSE_ACCEL
1191         RemoveAccelFor(item);
1192 #endif // wxUSE_ACCEL
1193     }
1194
1195     return itemOld;
1196 }
1197
1198 // ----------------------------------------------------------------------------
1199 // wxMenu attaching/detaching
1200 // ----------------------------------------------------------------------------
1201
1202 void wxMenu::Attach(wxMenuBarBase *menubar)
1203 {
1204     wxMenuBase::Attach(menubar);
1205
1206     wxCHECK_RET( m_menuBar, _T("menubar can't be NULL after attaching") );
1207
1208     // unfortunately, we can't use m_menuBar->GetEventHandler() here because,
1209     // if the menubar is currently showing a menu, its event handler is a
1210     // temporary one installed by wxPopupWindow and so will disappear soon any
1211     // any attempts to use it from the newly attached menu would result in a
1212     // crash
1213     //
1214     // so we use the menubar itself, even if it's a pity as it means we can't
1215     // redirect all menu events by changing the menubar handler (FIXME)
1216     SetNextHandler(m_menuBar);
1217 }
1218
1219 void wxMenu::Detach()
1220 {
1221     wxMenuBase::Detach();
1222 }
1223
1224 // ----------------------------------------------------------------------------
1225 // wxMenu misc functions
1226 // ----------------------------------------------------------------------------
1227
1228 wxWindow *wxMenu::GetRootWindow() const
1229 {
1230     if ( GetMenuBar() )
1231     {
1232         // simple case - a normal menu attached to the menubar
1233         return GetMenuBar();
1234     }
1235
1236     // we're a popup menu but the trouble is that only the top level popup menu
1237     // has a pointer to the invoking window, so we must walk up the menu chain
1238     // if needed
1239     wxWindow *win = GetInvokingWindow();
1240     if ( win )
1241     {
1242         // we already have it
1243         return win;
1244     }
1245
1246     wxMenu *menu = GetParent();
1247     while ( menu )
1248     {
1249         // We are a submenu of a menu of a menubar
1250         if (menu->GetMenuBar())
1251            return menu->GetMenuBar();
1252
1253         win = menu->GetInvokingWindow();
1254         if ( win )
1255             break;
1256
1257         menu = menu->GetParent();
1258     }
1259
1260     // we're probably going to crash in the caller anyhow, but try to detect
1261     // this error as soon as possible
1262     wxASSERT_MSG( win, _T("menu without any associated window?") );
1263
1264     // also remember it in this menu so that we don't have to search for it the
1265     // next time
1266     wxConstCast(this, wxMenu)->m_invokingWindow = win;
1267
1268     return win;
1269 }
1270
1271 wxRenderer *wxMenu::GetRenderer() const
1272 {
1273     // we're going to crash without renderer!
1274     wxCHECK_MSG( m_popupMenu, NULL, _T("neither popup nor menubar menu?") );
1275
1276     return m_popupMenu->GetRenderer();
1277 }
1278
1279 void wxMenu::RefreshItem(wxMenuItem *item)
1280 {
1281     // the item geometry changed, so our might have changed as well
1282     InvalidateGeometryInfo();
1283
1284     if ( IsShown() )
1285     {
1286         // this would be a bug in IsShown()
1287         wxCHECK_RET( m_popupMenu, _T("must have popup window if shown!") );
1288
1289         // recalc geometry to update the item height and such
1290         (void)GetGeometryInfo();
1291
1292         m_popupMenu->RefreshItem(item);
1293     }
1294 }
1295
1296 // ----------------------------------------------------------------------------
1297 // wxMenu showing and hiding
1298 // ----------------------------------------------------------------------------
1299
1300 bool wxMenu::IsShown() const
1301 {
1302     return m_popupMenu && m_popupMenu->IsShown();
1303 }
1304
1305 void wxMenu::OnDismiss(bool dismissParent)
1306 {
1307     if ( m_menuParent )
1308     {
1309         // always notify the parent about submenu disappearance
1310         wxPopupMenuWindow *win = m_menuParent->m_popupMenu;
1311         if ( win )
1312         {
1313             win->OnSubmenuDismiss( true );
1314         }
1315         else
1316         {
1317             wxFAIL_MSG( _T("parent menu not shown?") );
1318         }
1319
1320         // and if we dismiss everything, propagate to parent
1321         if ( dismissParent )
1322         {
1323             // dismissParent is recursive
1324             m_menuParent->Dismiss();
1325             m_menuParent->OnDismiss(true);
1326         }
1327     }
1328     else // no parent menu
1329     {
1330         // notify the menu bar if we're a top level menu
1331         if ( m_menuBar )
1332         {
1333             m_menuBar->OnDismissMenu(dismissParent);
1334         }
1335         else // popup menu
1336         {
1337             wxCHECK_RET( m_invokingWindow, _T("what kind of menu is this?") );
1338
1339             m_invokingWindow->DismissPopupMenu();
1340
1341             // Why reset it here? We need it for sending the event to...
1342             // SetInvokingWindow(NULL);
1343         }
1344     }
1345 }
1346
1347 void wxMenu::Popup(const wxPoint& pos, const wxSize& size, bool selectFirst)
1348 {
1349     // create the popup window if not done yet
1350     if ( !m_popupMenu )
1351     {
1352         m_popupMenu = new wxPopupMenuWindow(GetRootWindow(), this);
1353     }
1354
1355     // select the first item unless disabled
1356     if ( selectFirst )
1357     {
1358         m_popupMenu->SelectFirst();
1359     }
1360
1361     // the geometry might have changed since the last time we were shown, so
1362     // always resize
1363     m_popupMenu->SetClientSize(GetGeometryInfo().GetSize());
1364
1365     // position it as specified
1366     m_popupMenu->Position(pos, size);
1367
1368     // the menu can't have the focus itself (it is a Windows limitation), so
1369     // always keep the focus at the originating window
1370     wxWindow *focus = GetRootWindow();
1371
1372     wxASSERT_MSG( focus, _T("no window to keep focus on?") );
1373
1374     // and show it
1375     m_popupMenu->Popup(focus);
1376 }
1377
1378 void wxMenu::Dismiss()
1379 {
1380     wxCHECK_RET( IsShown(), _T("can't dismiss hidden menu") );
1381
1382     m_popupMenu->Dismiss();
1383 }
1384
1385 // ----------------------------------------------------------------------------
1386 // wxMenu event processing
1387 // ----------------------------------------------------------------------------
1388
1389 bool wxMenu::ProcessKeyDown(int key)
1390 {
1391     wxCHECK_MSG( m_popupMenu, false,
1392                  _T("can't process key events if not shown") );
1393
1394     return m_popupMenu->ProcessKeyDown(key);
1395 }
1396
1397 bool wxMenu::ClickItem(wxMenuItem *item)
1398 {
1399     int isChecked;
1400     if ( item->IsCheckable() )
1401     {
1402         // update the item state
1403         isChecked = !item->IsChecked();
1404
1405         item->Check(isChecked != 0);
1406     }
1407     else
1408     {
1409         // not applicabled
1410         isChecked = -1;
1411     }
1412
1413     return SendEvent(item->GetId(), isChecked);
1414 }
1415
1416 // ----------------------------------------------------------------------------
1417 // wxMenu accel support
1418 // ----------------------------------------------------------------------------
1419
1420 #if wxUSE_ACCEL
1421
1422 bool wxMenu::ProcessAccelEvent(const wxKeyEvent& event)
1423 {
1424     // do we have an item for this accel?
1425     wxMenuItem *item = m_accelTable.GetMenuItem(event);
1426     if ( item && item->IsEnabled() )
1427     {
1428         return ClickItem(item);
1429     }
1430
1431     // try our submenus
1432     for ( wxMenuItemIter node = GetMenuItems().GetFirst();
1433           node;
1434           node = node->GetNext() )
1435     {
1436         const wxMenuItem *item = node->GetData();
1437         if ( item->IsSubMenu() && item->IsEnabled() )
1438         {
1439             // try its elements
1440             if ( item->GetSubMenu()->ProcessAccelEvent(event) )
1441             {
1442                 return true;
1443             }
1444         }
1445     }
1446
1447     return false;
1448 }
1449
1450 void wxMenu::AddAccelFor(wxMenuItem *item)
1451 {
1452     wxAcceleratorEntry *accel = item->GetAccel();
1453     if ( accel )
1454     {
1455         accel->SetMenuItem(item);
1456
1457         m_accelTable.Add(*accel);
1458
1459         delete accel;
1460     }
1461 }
1462
1463 void wxMenu::RemoveAccelFor(wxMenuItem *item)
1464 {
1465     wxAcceleratorEntry *accel = item->GetAccel();
1466     if ( accel )
1467     {
1468         m_accelTable.Remove(*accel);
1469
1470         delete accel;
1471     }
1472 }
1473
1474 #endif // wxUSE_ACCEL
1475
1476 // ----------------------------------------------------------------------------
1477 // wxMenuItem construction
1478 // ----------------------------------------------------------------------------
1479
1480 wxMenuItem::wxMenuItem(wxMenu *parentMenu,
1481                        int id,
1482                        const wxString& text,
1483                        const wxString& help,
1484                        wxItemKind kind,
1485                        wxMenu *subMenu)
1486           : wxMenuItemBase(parentMenu, id, text, help, kind, subMenu)
1487 {
1488     m_posY =
1489     m_height = wxDefaultCoord;
1490
1491     m_radioGroup.start = -1;
1492     m_isRadioGroupStart = false;
1493
1494     m_bmpDisabled = wxNullBitmap;
1495
1496     UpdateAccelInfo();
1497 }
1498
1499 wxMenuItem::~wxMenuItem()
1500 {
1501 }
1502
1503 // ----------------------------------------------------------------------------
1504 // wxMenuItemBase methods implemented here
1505 // ----------------------------------------------------------------------------
1506
1507 /* static */
1508 wxMenuItem *wxMenuItemBase::New(wxMenu *parentMenu,
1509                                 int id,
1510                                 const wxString& name,
1511                                 const wxString& help,
1512                                 wxItemKind kind,
1513                                 wxMenu *subMenu)
1514 {
1515     return new wxMenuItem(parentMenu, id, name, help, kind, subMenu);
1516 }
1517
1518 /* static */
1519 wxString wxMenuItemBase::GetLabelFromText(const wxString& text)
1520 {
1521     return wxStripMenuCodes(text);
1522 }
1523
1524 // ----------------------------------------------------------------------------
1525 // wxMenuItem operations
1526 // ----------------------------------------------------------------------------
1527
1528 void wxMenuItem::NotifyMenu()
1529 {
1530     m_parentMenu->RefreshItem(this);
1531 }
1532
1533 void wxMenuItem::UpdateAccelInfo()
1534 {
1535     m_indexAccel = wxControl::FindAccelIndex(m_text);
1536
1537     // will be empty if the text contains no TABs - ok
1538     m_strAccel = m_text.AfterFirst(_T('\t'));
1539 }
1540
1541 void wxMenuItem::SetText(const wxString& text)
1542 {
1543     if ( text != m_text )
1544     {
1545         // first call the base class version to change m_text
1546         // (and also check if we don't have a stock menu item)
1547         wxMenuItemBase::SetText(text);
1548
1549         UpdateAccelInfo();
1550
1551         NotifyMenu();
1552     }
1553 }
1554
1555 void wxMenuItem::SetCheckable(bool checkable)
1556 {
1557     if ( checkable != IsCheckable() )
1558     {
1559         wxMenuItemBase::SetCheckable(checkable);
1560
1561         NotifyMenu();
1562     }
1563 }
1564
1565 void wxMenuItem::SetBitmaps(const wxBitmap& bmpChecked,
1566                             const wxBitmap& bmpUnchecked)
1567 {
1568     m_bmpChecked = bmpChecked;
1569     m_bmpUnchecked = bmpUnchecked;
1570
1571     NotifyMenu();
1572 }
1573
1574 void wxMenuItem::Enable(bool enable)
1575 {
1576     if ( enable != m_isEnabled )
1577     {
1578         wxMenuItemBase::Enable(enable);
1579
1580         NotifyMenu();
1581     }
1582 }
1583
1584 void wxMenuItem::Check(bool check)
1585 {
1586     wxCHECK_RET( IsCheckable(), wxT("only checkable items may be checked") );
1587
1588     if ( m_isChecked == check )
1589         return;
1590
1591     if ( GetKind() == wxITEM_RADIO )
1592     {
1593         // it doesn't make sense to uncheck a radio item - what would this do?
1594         if ( !check )
1595             return;
1596
1597         // get the index of this item in the menu
1598         const wxMenuItemList& items = m_parentMenu->GetMenuItems();
1599         int pos = items.IndexOf(this);
1600         wxCHECK_RET( pos != wxNOT_FOUND,
1601                      _T("menuitem not found in the menu items list?") );
1602
1603         // get the radio group range
1604         int start,
1605             end;
1606
1607         if ( m_isRadioGroupStart )
1608         {
1609             // we already have all information we need
1610             start = pos;
1611             end = m_radioGroup.end;
1612         }
1613         else // next radio group item
1614         {
1615             // get the radio group end from the start item
1616             start = m_radioGroup.start;
1617             end = items.Item(start)->GetData()->m_radioGroup.end;
1618         }
1619
1620         // also uncheck all the other items in this radio group
1621         wxMenuItemIter node = items.Item(start);
1622         for ( int n = start; n <= end && node; n++ )
1623         {
1624             if ( n != pos )
1625             {
1626                 node->GetData()->m_isChecked = false;
1627             }
1628             node = node->GetNext();
1629         }
1630     }
1631
1632     wxMenuItemBase::Check(check);
1633
1634     NotifyMenu();
1635 }
1636
1637 // radio group stuff
1638 // -----------------
1639
1640 void wxMenuItem::SetAsRadioGroupStart()
1641 {
1642     m_isRadioGroupStart = true;
1643 }
1644
1645 void wxMenuItem::SetRadioGroupStart(int start)
1646 {
1647     wxASSERT_MSG( !m_isRadioGroupStart,
1648                   _T("should only be called for the next radio items") );
1649
1650     m_radioGroup.start = start;
1651 }
1652
1653 void wxMenuItem::SetRadioGroupEnd(int end)
1654 {
1655     wxASSERT_MSG( m_isRadioGroupStart,
1656                   _T("should only be called for the first radio item") );
1657
1658     m_radioGroup.end = end;
1659 }
1660
1661 // ----------------------------------------------------------------------------
1662 // wxMenuBar creation
1663 // ----------------------------------------------------------------------------
1664
1665 void wxMenuBar::Init()
1666 {
1667     m_frameLast = NULL;
1668
1669     m_current = -1;
1670
1671     m_menuShown = NULL;
1672
1673     m_shouldShowMenu = false;
1674 }
1675
1676 wxMenuBar::wxMenuBar(size_t n, wxMenu *menus[], const wxString titles[], long WXUNUSED(style))
1677 {
1678     Init();
1679
1680     for (size_t i = 0; i < n; ++i )
1681         Append(menus[i], titles[i]);
1682 }
1683
1684 void wxMenuBar::Attach(wxFrame *frame)
1685 {
1686     // maybe you really wanted to call Detach()?
1687     wxCHECK_RET( frame, _T("wxMenuBar::Attach(NULL) called") );
1688
1689     wxMenuBarBase::Attach(frame);
1690
1691     if ( IsCreated() )
1692     {
1693         // reparent if necessary
1694         if ( m_frameLast != frame )
1695         {
1696             Reparent(frame);
1697         }
1698
1699         // show it back - was hidden by Detach()
1700         Show();
1701     }
1702     else // not created yet, do it now
1703     {
1704         // we have no way to return the error from here anyhow :-(
1705         (void)Create(frame, wxID_ANY);
1706
1707         SetCursor(wxCURSOR_ARROW);
1708
1709         SetFont(wxSystemSettings::GetFont(wxSYS_SYSTEM_FONT));
1710
1711         // calculate and set our height (it won't be changed any more)
1712         SetSize(wxDefaultCoord, GetBestSize().y);
1713     }
1714
1715     // remember the last frame which had us to avoid unnecessarily reparenting
1716     // above
1717     m_frameLast = frame;
1718 }
1719
1720 void wxMenuBar::Detach()
1721 {
1722     // don't delete the window because we may be reattached later, just hide it
1723     if ( m_frameLast )
1724     {
1725         Hide();
1726     }
1727
1728     wxMenuBarBase::Detach();
1729 }
1730
1731 wxMenuBar::~wxMenuBar()
1732 {
1733 }
1734
1735 // ----------------------------------------------------------------------------
1736 // wxMenuBar adding/removing items
1737 // ----------------------------------------------------------------------------
1738
1739 bool wxMenuBar::Append(wxMenu *menu, const wxString& title)
1740 {
1741     return Insert(GetCount(), menu, title);
1742 }
1743
1744 bool wxMenuBar::Insert(size_t pos, wxMenu *menu, const wxString& title)
1745 {
1746     if ( !wxMenuBarBase::Insert(pos, menu, title) )
1747         return false;
1748
1749     wxMenuInfo *info = new wxMenuInfo(title);
1750     m_menuInfos.Insert(info, pos);
1751
1752     RefreshAllItemsAfter(pos);
1753
1754     return true;
1755 }
1756
1757 wxMenu *wxMenuBar::Replace(size_t pos, wxMenu *menu, const wxString& title)
1758 {
1759     wxMenu *menuOld = wxMenuBarBase::Replace(pos, menu, title);
1760
1761     if ( menuOld )
1762     {
1763         wxMenuInfo& info = m_menuInfos[pos];
1764
1765         info.SetLabel(title);
1766
1767         // even if the old menu was disabled, the new one is not any more
1768         info.SetEnabled();
1769
1770         // even if we change only this one, the new label has different width,
1771         // so we need to refresh everything beyond this item as well
1772         RefreshAllItemsAfter(pos);
1773     }
1774
1775     return menuOld;
1776 }
1777
1778 wxMenu *wxMenuBar::Remove(size_t pos)
1779 {
1780     wxMenu *menuOld = wxMenuBarBase::Remove(pos);
1781
1782     if ( menuOld )
1783     {
1784         m_menuInfos.RemoveAt(pos);
1785
1786         // this doesn't happen too often, so don't try to be too smart - just
1787         // refresh everything
1788         Refresh();
1789     }
1790
1791     return menuOld;
1792 }
1793
1794 // ----------------------------------------------------------------------------
1795 // wxMenuBar top level menus access
1796 // ----------------------------------------------------------------------------
1797
1798 wxCoord wxMenuBar::GetItemWidth(size_t pos) const
1799 {
1800     return m_menuInfos[pos].GetWidth(wxConstCast(this, wxMenuBar));
1801 }
1802
1803 void wxMenuBar::EnableTop(size_t pos, bool enable)
1804 {
1805     wxCHECK_RET( pos < GetCount(), _T("invalid index in EnableTop") );
1806
1807     if ( enable != m_menuInfos[pos].IsEnabled() )
1808     {
1809         m_menuInfos[pos].SetEnabled(enable);
1810
1811         RefreshItem(pos);
1812     }
1813     //else: nothing to do
1814 }
1815
1816 bool wxMenuBar::IsEnabledTop(size_t pos) const
1817 {
1818     wxCHECK_MSG( pos < GetCount(), false, _T("invalid index in IsEnabledTop") );
1819
1820     return m_menuInfos[pos].IsEnabled();
1821 }
1822
1823 void wxMenuBar::SetLabelTop(size_t pos, const wxString& label)
1824 {
1825     wxCHECK_RET( pos < GetCount(), _T("invalid index in EnableTop") );
1826
1827     if ( label != m_menuInfos[pos].GetLabel() )
1828     {
1829         m_menuInfos[pos].SetLabel(label);
1830
1831         RefreshItem(pos);
1832     }
1833     //else: nothing to do
1834 }
1835
1836 wxString wxMenuBar::GetLabelTop(size_t pos) const
1837 {
1838     wxCHECK_MSG( pos < GetCount(), wxEmptyString, _T("invalid index in GetLabelTop") );
1839
1840     return m_menuInfos[pos].GetLabel();
1841 }
1842
1843 // ----------------------------------------------------------------------------
1844 // wxMenuBar drawing
1845 // ----------------------------------------------------------------------------
1846
1847 void wxMenuBar::RefreshAllItemsAfter(size_t pos)
1848 {
1849     if ( !IsCreated() )
1850     {
1851         // no need to refresh if nothing is shown yet
1852         return;
1853     }
1854
1855     wxRect rect = GetItemRect(pos);
1856     rect.width = GetClientSize().x - rect.x;
1857     RefreshRect(rect);
1858 }
1859
1860 void wxMenuBar::RefreshItem(size_t pos)
1861 {
1862     wxCHECK_RET( pos != (size_t)-1,
1863                  _T("invalid item in wxMenuBar::RefreshItem") );
1864
1865     if ( !IsCreated() )
1866     {
1867         // no need to refresh if nothing is shown yet
1868         return;
1869     }
1870
1871     RefreshRect(GetItemRect(pos));
1872 }
1873
1874 void wxMenuBar::DoDraw(wxControlRenderer *renderer)
1875 {
1876     wxDC& dc = renderer->GetDC();
1877     dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
1878
1879     // redraw only the items which must be redrawn
1880
1881     // we don't have to use GetUpdateClientRect() here because our client rect
1882     // is the same as total one
1883     wxRect rectUpdate = GetUpdateRegion().GetBox();
1884
1885     int flagsMenubar = GetStateFlags();
1886
1887     wxRect rect;
1888     rect.y = 0;
1889     rect.height = GetClientSize().y;
1890
1891     wxCoord x = 0;
1892     size_t count = GetCount();
1893     for ( size_t n = 0; n < count; n++ )
1894     {
1895         if ( x > rectUpdate.GetRight() )
1896         {
1897             // all remaining items are to the right of rectUpdate
1898             break;
1899         }
1900
1901         rect.x = x;
1902         rect.width = GetItemWidth(n);
1903         x += rect.width;
1904         if ( x < rectUpdate.x )
1905         {
1906             // this item is still to the left of rectUpdate
1907             continue;
1908         }
1909
1910         int flags = flagsMenubar;
1911         if ( m_current != -1 && n == (size_t)m_current )
1912         {
1913             flags |= wxCONTROL_SELECTED;
1914         }
1915
1916         if ( !IsEnabledTop(n) )
1917         {
1918             flags |= wxCONTROL_DISABLED;
1919         }
1920
1921         GetRenderer()->DrawMenuBarItem
1922                        (
1923                             dc,
1924                             rect,
1925                             m_menuInfos[n].GetLabel(),
1926                             flags,
1927                             m_menuInfos[n].GetAccelIndex()
1928                        );
1929     }
1930 }
1931
1932 // ----------------------------------------------------------------------------
1933 // wxMenuBar geometry
1934 // ----------------------------------------------------------------------------
1935
1936 wxRect wxMenuBar::GetItemRect(size_t pos) const
1937 {
1938     wxASSERT_MSG( pos < GetCount(), _T("invalid menu bar item index") );
1939     wxASSERT_MSG( IsCreated(), _T("can't call this method yet") );
1940
1941     wxRect rect;
1942     rect.x =
1943     rect.y = 0;
1944     rect.height = GetClientSize().y;
1945
1946     for ( size_t n = 0; n < pos; n++ )
1947     {
1948         rect.x += GetItemWidth(n);
1949     }
1950
1951     rect.width = GetItemWidth(pos);
1952
1953     return rect;
1954 }
1955
1956 wxSize wxMenuBar::DoGetBestClientSize() const
1957 {
1958     wxSize size;
1959     if ( GetMenuCount() > 0 )
1960     {
1961         wxClientDC dc(wxConstCast(this, wxMenuBar));
1962         dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
1963         dc.GetTextExtent(GetLabelTop(0), &size.x, &size.y);
1964
1965         // adjust for the renderer we use
1966         size = GetRenderer()->GetMenuBarItemSize(size);
1967     }
1968     else // empty menubar
1969     {
1970         size.x =
1971         size.y = 0;
1972     }
1973
1974     // the width is arbitrary, of course, for horizontal menubar
1975     size.x = 100;
1976
1977     return size;
1978 }
1979
1980 int wxMenuBar::GetMenuFromPoint(const wxPoint& pos) const
1981 {
1982     if ( pos.x < 0 || pos.y < 0 || pos.y > GetClientSize().y )
1983         return -1;
1984
1985     // do find it
1986     wxCoord x = 0;
1987     size_t count = GetCount();
1988     for ( size_t item = 0; item < count; item++ )
1989     {
1990         x += GetItemWidth(item);
1991
1992         if ( x > pos.x )
1993         {
1994             return item;
1995         }
1996     }
1997
1998     // to the right of the last menu item
1999     return -1;
2000 }
2001
2002 // ----------------------------------------------------------------------------
2003 // wxMenuBar menu operations
2004 // ----------------------------------------------------------------------------
2005
2006 void wxMenuBar::SelectMenu(size_t pos)
2007 {
2008     SetFocus();
2009     wxLogTrace(_T("mousecapture"), _T("Capturing mouse from wxMenuBar::SelectMenu"));
2010     CaptureMouse();
2011
2012     DoSelectMenu(pos);
2013 }
2014
2015 void wxMenuBar::DoSelectMenu(size_t pos)
2016 {
2017     wxCHECK_RET( pos < GetCount(), _T("invalid menu index in DoSelectMenu") );
2018
2019     int posOld = m_current;
2020
2021     m_current = pos;
2022
2023     if ( posOld != -1 )
2024     {
2025         // close the previous menu
2026         if ( IsShowingMenu() )
2027         {
2028             // restore m_shouldShowMenu flag after DismissMenu() which resets
2029             // it to false
2030             bool old = m_shouldShowMenu;
2031
2032             DismissMenu();
2033
2034             m_shouldShowMenu = old;
2035         }
2036
2037         RefreshItem((size_t)posOld);
2038     }
2039
2040     RefreshItem(pos);
2041 }
2042
2043 void wxMenuBar::PopupMenu(size_t pos)
2044 {
2045     wxCHECK_RET( pos < GetCount(), _T("invalid menu index in PopupCurrentMenu") );
2046
2047     SetFocus();
2048     DoSelectMenu(pos);
2049     PopupCurrentMenu();
2050 }
2051
2052 // ----------------------------------------------------------------------------
2053 // wxMenuBar input handing
2054 // ----------------------------------------------------------------------------
2055
2056 /*
2057    Note that wxMenuBar doesn't use wxInputHandler but handles keyboard and
2058    mouse in the same way under all platforms. This is because it doesn't derive
2059    from wxControl (which works with input handlers) but directly from wxWindow.
2060
2061    Also, menu bar input handling is rather simple, so maybe it's not really
2062    worth making it themeable - at least I've decided against doing it now as it
2063    would merging the changes back into trunk more difficult. But it still could
2064    be done later if really needed.
2065  */
2066
2067 void wxMenuBar::OnKillFocus(wxFocusEvent& event)
2068 {
2069     if ( m_current != -1 )
2070     {
2071         RefreshItem((size_t)m_current);
2072
2073         m_current = -1;
2074     }
2075
2076     event.Skip();
2077 }
2078
2079 void wxMenuBar::OnLeftDown(wxMouseEvent& event)
2080 {
2081     if ( HasCapture() )
2082     {
2083         OnDismiss();
2084
2085         event.Skip();
2086     }
2087     else // we didn't have mouse capture, capture it now
2088     {
2089         m_current = GetMenuFromPoint(event.GetPosition());
2090         if ( m_current == -1 )
2091         {
2092             // unfortunately, we can't prevent wxMSW from giving us the focus,
2093             // so we can only give it back
2094             GiveAwayFocus();
2095         }
2096         else // on item
2097         {
2098             wxLogTrace(_T("mousecapture"), _T("Capturing mouse from wxMenuBar::OnLeftDown"));
2099             CaptureMouse();
2100
2101             // show it as selected
2102             RefreshItem((size_t)m_current);
2103
2104             // show the menu
2105             PopupCurrentMenu(false /* don't select first item - as Windows does */);
2106         }
2107     }
2108 }
2109
2110 void wxMenuBar::OnMouseMove(wxMouseEvent& event)
2111 {
2112     if ( HasCapture() )
2113     {
2114         (void)ProcessMouseEvent(event.GetPosition());
2115     }
2116     else
2117     {
2118         event.Skip();
2119     }
2120 }
2121
2122 bool wxMenuBar::ProcessMouseEvent(const wxPoint& pt)
2123 {
2124     // a hack to ignore the extra mouse events MSW sends us: this is similar to
2125     // wxUSE_MOUSEEVENT_HACK in wxWin itself but it isn't enough for us here as
2126     // we get the messages from different windows (old and new popup menus for
2127     // example)
2128 #ifdef __WXMSW__
2129     static wxPoint s_ptLast;
2130     if ( pt == s_ptLast )
2131     {
2132         return false;
2133     }
2134
2135     s_ptLast = pt;
2136 #endif // __WXMSW__
2137
2138     int currentNew = GetMenuFromPoint(pt);
2139     if ( (currentNew == -1) || (currentNew == m_current) )
2140     {
2141         return false;
2142     }
2143
2144     // select the new active item
2145     DoSelectMenu(currentNew);
2146
2147     // show the menu if we know that we should, even if we hadn't been showing
2148     // it before (this may happen if the previous menu was disabled)
2149     if ( m_shouldShowMenu && !m_menuShown)
2150     {
2151         // open the new menu if the old one we closed had been opened
2152         PopupCurrentMenu(false /* don't select first item - as Windows does */);
2153     }
2154
2155     return true;
2156 }
2157
2158 void wxMenuBar::OnKeyDown(wxKeyEvent& event)
2159 {
2160     // ensure that we have a current item - we might not have it if we're
2161     // given the focus with Alt or F10 press (and under GTK+ the menubar
2162     // somehow gets the keyboard events even when it doesn't have focus...)
2163     if ( m_current == -1 )
2164     {
2165         if ( !HasCapture() )
2166         {
2167             SelectMenu(0);
2168         }
2169         else // we do have capture
2170         {
2171             // we always maintain a valid current item while we're in modal
2172             // state (i.e. have the capture)
2173             wxFAIL_MSG( _T("how did we manage to lose current item?") );
2174
2175             return;
2176         }
2177     }
2178
2179     int key = event.GetKeyCode();
2180
2181     // first let the menu have it
2182     if ( IsShowingMenu() && m_menuShown->ProcessKeyDown(key) )
2183     {
2184         return;
2185     }
2186
2187     // cycle through the menu items when left/right arrows are pressed and open
2188     // the menu when up/down one is
2189     switch ( key )
2190     {
2191         case WXK_ALT:
2192             // Alt must be processed at wxWindow level too
2193             event.Skip();
2194             // fall through
2195
2196         case WXK_ESCAPE:
2197             // remove the selection and give the focus away
2198             if ( m_current != -1 )
2199             {
2200                 if ( IsShowingMenu() )
2201                 {
2202                     DismissMenu();
2203                 }
2204
2205                 OnDismiss();
2206             }
2207             break;
2208
2209         case WXK_LEFT:
2210         case WXK_RIGHT:
2211             {
2212                 size_t count = GetCount();
2213                 if ( count == 1 )
2214                 {
2215                     // the item won't change anyhow
2216                     break;
2217                 }
2218                 //else: otherwise, it will
2219
2220                 // remember if we were showing a menu - if we did, we should
2221                 // show the new menu after changing the item
2222                 bool wasMenuOpened = IsShowingMenu();
2223                 if ( wasMenuOpened )
2224                 {
2225                     DismissMenu();
2226                 }
2227
2228                 // cast is safe as we tested for -1 above
2229                 size_t currentNew = (size_t)m_current;
2230
2231                 if ( key == WXK_LEFT )
2232                 {
2233                     if ( currentNew-- == 0 )
2234                         currentNew = count - 1;
2235                 }
2236                 else // right
2237                 {
2238                     if ( ++currentNew == count )
2239                         currentNew = 0;
2240                 }
2241
2242                 DoSelectMenu(currentNew);
2243
2244                 if ( wasMenuOpened )
2245                 {
2246                     PopupCurrentMenu();
2247                 }
2248             }
2249             break;
2250
2251         case WXK_DOWN:
2252         case WXK_UP:
2253         case WXK_RETURN:
2254             // open the menu
2255             PopupCurrentMenu();
2256             break;
2257
2258         default:
2259             // letters open the corresponding menu
2260             {
2261                 bool unique;
2262                 int idxFound = FindNextItemForAccel(m_current, key, &unique);
2263
2264                 if ( idxFound != -1 )
2265                 {
2266                     if ( IsShowingMenu() )
2267                     {
2268                         DismissMenu();
2269                     }
2270
2271                     DoSelectMenu((size_t)idxFound);
2272
2273                     // if the item is not unique, just select it but don't
2274                     // activate as the user might have wanted to activate
2275                     // another item
2276                     //
2277                     // also, don't try to open a disabled menu
2278                     if ( unique && IsEnabledTop((size_t)idxFound) )
2279                     {
2280                         // open the menu
2281                         PopupCurrentMenu();
2282                     }
2283
2284                     // skip the "event.Skip()" below
2285                     break;
2286                 }
2287             }
2288
2289             event.Skip();
2290     }
2291 }
2292
2293 // ----------------------------------------------------------------------------
2294 // wxMenuBar accel handling
2295 // ----------------------------------------------------------------------------
2296
2297 int wxMenuBar::FindNextItemForAccel(int idxStart, int key, bool *unique) const
2298 {
2299     if ( !wxIsalnum((wxChar)key) )
2300     {
2301         // we only support letters/digits as accels
2302         return -1;
2303     }
2304
2305     // do we have more than one item with this accel?
2306     if ( unique )
2307         *unique = true;
2308
2309     // translate everything to lower case before comparing
2310     wxChar chAccel = (wxChar)wxTolower(key);
2311
2312     // the index of the item with this accel
2313     int idxFound = -1;
2314
2315     // loop through all items searching for the item with this
2316     // accel starting at the item after the current one
2317     int count = GetCount();
2318     int n = idxStart == -1 ? 0 : idxStart + 1;
2319
2320     if ( n == count )
2321     {
2322         // wrap
2323         n = 0;
2324     }
2325
2326     idxStart = n;
2327     for ( ;; )
2328     {
2329         const wxMenuInfo& info = m_menuInfos[n];
2330
2331         int idxAccel = info.GetAccelIndex();
2332         if ( idxAccel != -1 &&
2333              wxTolower(info.GetLabel()[(size_t)idxAccel])
2334                 == chAccel )
2335         {
2336             // ok, found an item with this accel
2337             if ( idxFound == -1 )
2338             {
2339                 // store it but continue searching as we need to
2340                 // know if it's the only item with this accel or if
2341                 // there are more
2342                 idxFound = n;
2343             }
2344             else // we already had found such item
2345             {
2346                 if ( unique )
2347                     *unique = false;
2348
2349                 // no need to continue further, we won't find
2350                 // anything we don't already know
2351                 break;
2352             }
2353         }
2354
2355         // we want to iterate over all items wrapping around if
2356         // necessary
2357         if ( ++n == count )
2358         {
2359             // wrap
2360             n = 0;
2361         }
2362
2363         if ( n == idxStart )
2364         {
2365             // we've seen all items
2366             break;
2367         }
2368     }
2369
2370     return idxFound;
2371 }
2372
2373 #if wxUSE_ACCEL
2374
2375 bool wxMenuBar::ProcessAccelEvent(const wxKeyEvent& event)
2376 {
2377     size_t n = 0;
2378     for ( wxMenuList::compatibility_iterator node = m_menus.GetFirst();
2379           node;
2380           node = node->GetNext(), n++ )
2381     {
2382         // accels of the items in the disabled menus shouldn't work
2383         if ( m_menuInfos[n].IsEnabled() )
2384         {
2385             if ( node->GetData()->ProcessAccelEvent(event) )
2386             {
2387                 // menu processed it
2388                 return true;
2389             }
2390         }
2391     }
2392
2393     // not found
2394     return false;
2395 }
2396
2397 #endif // wxUSE_ACCEL
2398
2399 // ----------------------------------------------------------------------------
2400 // wxMenuBar menus showing
2401 // ----------------------------------------------------------------------------
2402
2403 void wxMenuBar::PopupCurrentMenu(bool selectFirst)
2404 {
2405     wxCHECK_RET( m_current != -1, _T("no menu to popup") );
2406
2407     // forgot to call DismissMenu()?
2408     wxASSERT_MSG( !m_menuShown, _T("shouldn't show two menus at once!") );
2409
2410     // in any case, we should show it - even if we won't
2411     m_shouldShowMenu = true;
2412
2413     if ( IsEnabledTop(m_current) )
2414     {
2415         // remember the menu we show
2416         m_menuShown = GetMenu(m_current);
2417
2418         // we don't show the menu at all if it has no items
2419         if ( !m_menuShown->IsEmpty() )
2420         {
2421             // position it correctly: note that we must use screen coords and
2422             // that we pass 0 as width to position the menu exactly below the
2423             // item, not to the right of it
2424             wxRect rectItem = GetItemRect(m_current);
2425
2426             m_menuShown->SetInvokingWindow(m_frameLast);
2427
2428             m_menuShown->Popup(ClientToScreen(rectItem.GetPosition()),
2429                                wxSize(0, rectItem.GetHeight()),
2430                                selectFirst);
2431         }
2432         else
2433         {
2434             // reset it back as no menu is shown
2435             m_menuShown = NULL;
2436         }
2437     }
2438     //else: don't show disabled menu
2439 }
2440
2441 void wxMenuBar::DismissMenu()
2442 {
2443     wxCHECK_RET( m_menuShown, _T("can't dismiss menu if none is shown") );
2444
2445     m_menuShown->Dismiss();
2446     OnDismissMenu();
2447 }
2448
2449 void wxMenuBar::OnDismissMenu(bool dismissMenuBar)
2450 {
2451     m_shouldShowMenu = false;
2452     m_menuShown = NULL;
2453     if ( dismissMenuBar )
2454     {
2455         OnDismiss();
2456     }
2457 }
2458
2459 void wxMenuBar::OnDismiss()
2460 {
2461     if ( ReleaseMouseCapture() )
2462         wxLogTrace(_T("mousecapture"), _T("Releasing mouse from wxMenuBar::OnDismiss"));
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 bool wxMenuBar::ReleaseMouseCapture()
2476 {
2477 #ifdef __WXX11__
2478     // With wxX11, when a menu is closed by clicking away from it, a control
2479     // under the click will still get an event, even though the menu has the
2480     // capture (bug?). So that control may already have taken the capture by
2481     // this point, preventing us from releasing the menu's capture. So to work
2482     // around this, we release both captures, then put back the control's
2483     // capture.
2484     wxWindow *capture = GetCapture();
2485     if ( capture )
2486     {
2487         capture->ReleaseMouse();
2488
2489         if ( capture == this )
2490             return true;
2491
2492         bool had = HasCapture();
2493
2494         if ( had )
2495             ReleaseMouse();
2496
2497         capture->CaptureMouse();
2498
2499         return had;
2500     }
2501 #else
2502     if ( HasCapture() )
2503     {
2504         ReleaseMouse();
2505         return true;
2506     }
2507 #endif
2508     return false;
2509 }
2510
2511 void wxMenuBar::GiveAwayFocus()
2512 {
2513     GetFrame()->SetFocus();
2514 }
2515
2516 // ----------------------------------------------------------------------------
2517 // popup menu support
2518 // ----------------------------------------------------------------------------
2519
2520 wxEventLoop *wxWindow::ms_evtLoopPopup = NULL;
2521
2522 bool wxWindow::DoPopupMenu(wxMenu *menu, int x, int y)
2523 {
2524     wxCHECK_MSG( !ms_evtLoopPopup, false,
2525                  _T("can't show more than one popup menu at a time") );
2526
2527 #ifdef __WXMSW__
2528     // we need to change the cursor before showing the menu as, apparently, no
2529     // cursor changes took place while the mouse is captured
2530     wxCursor cursorOld = GetCursor();
2531     SetCursor(wxCURSOR_ARROW);
2532 #endif // __WXMSW__
2533
2534 #if 0
2535     // flash any delayed log messages before showing the menu, otherwise it
2536     // could be dismissed (because it would lose focus) immediately after being
2537     // shown
2538     wxLog::FlushActive();
2539
2540     // some controls update themselves from OnIdle() call - let them do it
2541     wxTheApp->ProcessIdle();
2542
2543     // if the window hadn't been refreshed yet, the menu can adversely affect
2544     // its next OnPaint() handler execution - i.e. scrolled window refresh
2545     // logic breaks then as it scrolls part of the menu which hadn't been there
2546     // when the update event was generated into view
2547     Update();
2548 #endif // 0
2549
2550     menu->SetInvokingWindow(this);
2551
2552     // wxLogDebug( "Name of invoking window %s", menu->GetInvokingWindow()->GetName().c_str() );
2553
2554     menu->Popup(ClientToScreen(wxPoint(x, y)), wxSize(0,0));
2555
2556     // this is not very useful if the menu was popped up because of the mouse
2557     // click but I think it is nice to do when it appears because of a key
2558     // press (i.e. Windows menu key)
2559     //
2560     // Windows itself doesn't do it, but IMHO this is nice
2561     WarpPointer(x, y);
2562
2563     // we have to redirect all keyboard input to the menu temporarily
2564     PushEventHandler(new wxMenuKbdRedirector(menu));
2565
2566     // enter the local modal loop
2567     ms_evtLoopPopup = new wxEventLoop;
2568     ms_evtLoopPopup->Run();
2569
2570     delete ms_evtLoopPopup;
2571     ms_evtLoopPopup = NULL;
2572
2573     // remove the handler
2574     PopEventHandler(true /* delete it */);
2575
2576     menu->SetInvokingWindow(NULL);
2577
2578 #ifdef __WXMSW__
2579     SetCursor(cursorOld);
2580 #endif // __WXMSW__
2581
2582     return true;
2583 }
2584
2585 void wxWindow::DismissPopupMenu()
2586 {
2587     wxCHECK_RET( ms_evtLoopPopup, _T("no popup menu shown") );
2588
2589     ms_evtLoopPopup->Exit();
2590 }
2591
2592 #endif // wxUSE_MENUS