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 #ifndef WX_PRECOMP
  29     #include "wx/dynarray.h"
  30     #include "wx/control.h"      // for FindAccelIndex()
  31     #include "wx/menu.h"
  32     #include "wx/settings.h"
  33     #include "wx/accel.h"
  34     #include "wx/log.h"
  35     #include "wx/frame.h"
  36     #include "wx/dcclient.h"
  37 #endif // WX_PRECOMP
  38
  39 #include "wx/popupwin.h"
  40 #include "wx/evtloop.h"
  41
  42 #include "wx/univ/renderer.h"
  43
  44 #ifdef __WXMSW__
  45     #include "wx/msw/private.h"
  46 #endif // __WXMSW__
  47
  48 typedef wxMenuItemList::compatibility_iterator wxMenuItemIter;
  49
  50 // ----------------------------------------------------------------------------
  51 // wxMenuInfo contains all extra information about top level menus we need
  52 // ----------------------------------------------------------------------------
  53
  54 class WXDLLEXPORT wxMenuInfo
  55 {
  56 public:
  57     // ctor
  58     wxMenuInfo(const wxString& text)
  59     {
  60         SetLabel(text);
  61         SetEnabled();
  62     }
  63
  64     // modifiers
  65
  66     void SetLabel(const wxString& text)
  67     {
  68         // remember the accel char (may be -1 if none)
  69         m_indexAccel = wxControl::FindAccelIndex(text, &m_label);
  70
  71         // calculate the width later, after the menu bar is created
  72         m_width = 0;
  73     }
  74
  75     void SetEnabled(bool enabled = true) { m_isEnabled = enabled; }
  76
  77     // accessors
  78
  79     const wxString& GetLabel() const { return m_label; }
  80     bool IsEnabled() const { return m_isEnabled; }
  81     wxCoord GetWidth(wxMenuBar *menubar) const
  82     {
  83         if ( !m_width )
  84         {
  85             wxConstCast(this, wxMenuInfo)->CalcWidth(menubar);
  86         }
  87
  88         return m_width;
  89     }
  90
  91     int GetAccelIndex() const { return m_indexAccel; }
  92
  93 private:
  94     void CalcWidth(wxMenuBar *menubar)
  95     {
  96         wxSize size;
  97         wxClientDC dc(menubar);
  98         dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
  99         dc.GetTextExtent(m_label, &size.x, &size.y);
 100
 101         // adjust for the renderer we use and store the width
 102         m_width = menubar->GetRenderer()->GetMenuBarItemSize(size).x;
 103     }
 104
 105     wxString m_label;
 106     wxCoord m_width;
 107     int m_indexAccel;
 108     bool m_isEnabled;
 109 };
 110
 111 #include "wx/arrimpl.cpp"
 112
 113 WX_DEFINE_OBJARRAY(wxMenuInfoArray);
 114
 115 // ----------------------------------------------------------------------------
 116 // wxPopupMenuWindow: a popup window showing a menu
 117 // ----------------------------------------------------------------------------
 118
 119 class wxPopupMenuWindow : public wxPopupTransientWindow
 120 {
 121 public:
 122     wxPopupMenuWindow(wxWindow *parent, wxMenu *menu);
 123
 124     ~wxPopupMenuWindow();
 125
 126     // override the base class version to select the first item initially
 127     virtual void Popup(wxWindow *focus = NULL);
 128
 129     // override the base class version to dismiss any open submenus
 130     virtual void Dismiss();
 131
 132     // called when a submenu is dismissed
 133     void OnSubmenuDismiss(bool dismissParent);
 134
 135     // the default wxMSW wxPopupTransientWindow::OnIdle disables the capture
 136     // when the cursor is inside the popup, which dsables the menu tracking
 137     // so override it to do nothing
 138 #ifdef __WXMSW__
 139     void OnIdle(wxIdleEvent& WXUNUSED(event)) { }
 140 #endif
 141
 142     // get the currently selected item (may be NULL)
 143     wxMenuItem *GetCurrentItem() const
 144     {
 145         return m_nodeCurrent ? m_nodeCurrent->GetData() : NULL;
 146     }
 147
 148     // find the menu item at given position
 149     wxMenuItemIter GetMenuItemFromPoint(const wxPoint& pt) const;
 150
 151     // refresh the given item
 152     void RefreshItem(wxMenuItem *item);
 153
 154     // preselect the first item
 155     void SelectFirst() { SetCurrentItem(m_menu->GetMenuItems().GetFirst()); }
 156
 157     // process the key event, return true if done
 158     bool ProcessKeyDown(int key);
 159
 160     // process mouse move event
 161     void ProcessMouseMove(const wxPoint& pt);
 162
 163     // don't dismiss the popup window if the parent menu was clicked
 164     virtual bool ProcessLeftDown(wxMouseEvent& event);
 165
 166 protected:
 167     // how did we perform this operation?
 168     enum InputMethod
 169     {
 170         WithKeyboard,
 171         WithMouse
 172     };
 173
 174     // notify the menu when the window disappears from screen
 175     virtual void OnDismiss();
 176
 177     // draw the menu inside this window
 178     virtual void DoDraw(wxControlRenderer *renderer);
 179
 180     // event handlers
 181     void OnLeftUp(wxMouseEvent& event);
 182     void OnMouseMove(wxMouseEvent& event);
 183     void OnMouseLeave(wxMouseEvent& event);
 184     void OnKeyDown(wxKeyEvent& event);
 185
 186     // reset the current item and node
 187     void ResetCurrent();
 188
 189     // set the current node and item without refreshing anything
 190     void SetCurrentItem(wxMenuItemIter node);
 191
 192     // change the current item refreshing the old and new items
 193     void ChangeCurrent(wxMenuItemIter node);
 194
 195     // activate item, i.e. call either ClickItem() or OpenSubmenu() depending
 196     // on what it is, return true if something was done (i.e. it's not a
 197     // separator...)
 198     bool ActivateItem(wxMenuItem *item, InputMethod how = WithKeyboard);
 199
 200     // send the event about the item click
 201     void ClickItem(wxMenuItem *item);
 202
 203     // show the submenu for this item
 204     void OpenSubmenu(wxMenuItem *item, InputMethod how = WithKeyboard);
 205
 206     // can this tiem be opened?
 207     bool CanOpen(wxMenuItem *item)
 208     {
 209         return item && item->IsEnabled() && item->IsSubMenu();
 210     }
 211
 212     // dismiss the menu and all parent menus too
 213     void DismissAndNotify();
 214
 215     // react to dimissing this menu and also dismiss the parent if
 216     // dismissParent
 217     void HandleDismiss(bool dismissParent);
 218
 219     // do we have an open submenu?
 220     bool HasOpenSubmenu() const { return m_hasOpenSubMenu; }
 221
 222     // get previous node after the current one
 223     wxMenuItemIter GetPrevNode() const;
 224
 225     // get previous node before the given one, wrapping if it's the first one
 226     wxMenuItemIter GetPrevNode(wxMenuItemIter node) const;
 227
 228     // get next node after the current one
 229     wxMenuItemIter GetNextNode() const;
 230
 231     // get next node after the given one, wrapping if it's the last one
 232     wxMenuItemIter GetNextNode(wxMenuItemIter node) const;
 233
 234 private:
 235     // the menu we show
 236     wxMenu *m_menu;
 237
 238     // the menu node corresponding to the current item
 239     wxMenuItemIter m_nodeCurrent;
 240
 241     // do we currently have an opened submenu?
 242     bool m_hasOpenSubMenu;
 243
 244     DECLARE_EVENT_TABLE()
 245 };
 246
 247 // ----------------------------------------------------------------------------
 248 // wxMenuKbdRedirector: an event handler which redirects kbd input to wxMenu
 249 // ----------------------------------------------------------------------------
 250
 251 class wxMenuKbdRedirector : public wxEvtHandler
 252 {
 253 public:
 254     wxMenuKbdRedirector(wxMenu *menu) { m_menu = menu; }
 255
 256     virtual bool ProcessEvent(wxEvent& event)
 257     {
 258         if ( event.GetEventType() == wxEVT_KEY_DOWN )
 259         {
 260             return m_menu->ProcessKeyDown(((wxKeyEvent &)event).GetKeyCode());
 261         }
 262         else
 263         {
 264             // return false;
 265
 266             return wxEvtHandler::ProcessEvent(event);
 267         }
 268     }
 269
 270 private:
 271     wxMenu *m_menu;
 272 };
 273
 274 // ----------------------------------------------------------------------------
 275 // wxWin macros
 276 // ----------------------------------------------------------------------------
 277
 278 IMPLEMENT_DYNAMIC_CLASS(wxMenu, wxEvtHandler)
 279 IMPLEMENT_DYNAMIC_CLASS(wxMenuBar, wxWindow)
 280 IMPLEMENT_DYNAMIC_CLASS(wxMenuItem, wxObject)
 281
 282 BEGIN_EVENT_TABLE(wxPopupMenuWindow, wxPopupTransientWindow)
 283     EVT_KEY_DOWN(wxPopupMenuWindow::OnKeyDown)
 284
 285     EVT_LEFT_UP(wxPopupMenuWindow::OnLeftUp)
 286     EVT_MOTION(wxPopupMenuWindow::OnMouseMove)
 287     EVT_LEAVE_WINDOW(wxPopupMenuWindow::OnMouseLeave)
 288 #ifdef __WXMSW__
 289     EVT_IDLE(wxPopupMenuWindow::OnIdle)
 290 #endif
 291 END_EVENT_TABLE()
 292
 293 BEGIN_EVENT_TABLE(wxMenuBar, wxMenuBarBase)
 294     EVT_KILL_FOCUS(wxMenuBar::OnKillFocus)
 295
 296     EVT_KEY_DOWN(wxMenuBar::OnKeyDown)
 297
 298     EVT_LEFT_DOWN(wxMenuBar::OnLeftDown)
 299     EVT_MOTION(wxMenuBar::OnMouseMove)
 300 END_EVENT_TABLE()
 301
 302 // ============================================================================
 303 // implementation
 304 // ============================================================================
 305
 306 // ----------------------------------------------------------------------------
 307 // wxPopupMenuWindow
 308 // ----------------------------------------------------------------------------
 309
 310 wxPopupMenuWindow::wxPopupMenuWindow(wxWindow *parent, wxMenu *menu)
 311 {
 312     m_menu = menu;
 313     m_hasOpenSubMenu = false;
 314
 315     ResetCurrent();
 316
 317     (void)Create(parent, wxBORDER_RAISED);
 318
 319     SetCursor(wxCURSOR_ARROW);
 320 }
 321
 322 wxPopupMenuWindow::~wxPopupMenuWindow()
 323 {
 324     // When m_popupMenu in wxMenu is deleted because it
 325     // is a child of an old menu bar being deleted (note: it does
 326     // not get destroyed by the wxMenu destructor, but
 327     // by DestroyChildren()), m_popupMenu should be reset to NULL.
 328
 329     m_menu->m_popupMenu = NULL;
 330 }
 331
 332 // ----------------------------------------------------------------------------
 333 // wxPopupMenuWindow current item/node handling
 334 // ----------------------------------------------------------------------------
 335
 336 void wxPopupMenuWindow::ResetCurrent()
 337 {
 338     SetCurrentItem(wxMenuItemIter());
 339 }
 340
 341 void wxPopupMenuWindow::SetCurrentItem(wxMenuItemIter node)
 342 {
 343     m_nodeCurrent = node;
 344 }
 345
 346 void wxPopupMenuWindow::ChangeCurrent(wxMenuItemIter node)
 347 {
 348     if ( node != m_nodeCurrent )
 349     {
 350         wxMenuItemIter nodeOldCurrent = m_nodeCurrent;
 351
 352         m_nodeCurrent = node;
 353
 354         if ( nodeOldCurrent )
 355         {
 356             wxMenuItem *item = nodeOldCurrent->GetData();
 357             wxCHECK_RET( item, _T("no current item?") );
 358
 359             // if it was the currently opened menu, close it
 360             if ( item->IsSubMenu() && item->GetSubMenu()->IsShown() )
 361             {
 362                 item->GetSubMenu()->Dismiss();
 363                 OnSubmenuDismiss( false );
 364             }
 365
 366             RefreshItem(item);
 367         }
 368
 369         if ( m_nodeCurrent )
 370             RefreshItem(m_nodeCurrent->GetData());
 371     }
 372 }
 373
 374 wxMenuItemIter wxPopupMenuWindow::GetPrevNode() const
 375 {
 376     // return the last node if there had been no previously selected one
 377     return m_nodeCurrent ? GetPrevNode(m_nodeCurrent)
 378                          : wxMenuItemIter(m_menu->GetMenuItems().GetLast());
 379 }
 380
 381 wxMenuItemIter
 382 wxPopupMenuWindow::GetPrevNode(wxMenuItemIter node) const
 383 {
 384     if ( node )
 385     {
 386         node = node->GetPrevious();
 387         if ( !node )
 388         {
 389             node = m_menu->GetMenuItems().GetLast();
 390         }
 391     }
 392     //else: the menu is empty
 393
 394     return node;
 395 }
 396
 397 wxMenuItemIter wxPopupMenuWindow::GetNextNode() const
 398 {
 399     // return the first node if there had been no previously selected one
 400     return m_nodeCurrent ? GetNextNode(m_nodeCurrent)
 401                          : wxMenuItemIter(m_menu->GetMenuItems().GetFirst());
 402 }
 403
 404 wxMenuItemIter
 405 wxPopupMenuWindow::GetNextNode(wxMenuItemIter node) const
 406 {
 407     if ( node )
 408     {
 409         node = node->GetNext();
 410         if ( !node )
 411         {
 412             node = m_menu->GetMenuItems().GetFirst();
 413         }
 414     }
 415     //else: the menu is empty
 416
 417     return node;
 418 }
 419
 420 // ----------------------------------------------------------------------------
 421 // wxPopupMenuWindow popup/dismiss
 422 // ----------------------------------------------------------------------------
 423
 424 void wxPopupMenuWindow::Popup(wxWindow *focus)
 425 {
 426     // check that the current item had been properly reset before
 427     wxASSERT_MSG( !m_nodeCurrent ||
 428                   m_nodeCurrent == m_menu->GetMenuItems().GetFirst(),
 429                   _T("menu current item preselected incorrectly") );
 430
 431     wxPopupTransientWindow::Popup(focus);
 432
 433     // the base class no-longer captures the mouse automatically when Popup
 434     // is called, so do it here to allow the menu tracking to work
 435     if ( !HasCapture() )
 436         CaptureMouse();
 437
 438 #ifdef __WXMSW__
 439     // ensure that this window is really on top of everything: without using
 440     // SetWindowPos() it can be covered by its parent menu which is not
 441     // really what we want
 442     wxMenu *menuParent = m_menu->GetParent();
 443     if ( menuParent )
 444     {
 445         wxPopupMenuWindow *win = menuParent->m_popupMenu;
 446
 447         // if we're shown, the parent menu must be also shown
 448         wxCHECK_RET( win, _T("parent menu is not shown?") );
 449
 450         if ( !::SetWindowPos(GetHwndOf(win), GetHwnd(),
 451                              0, 0, 0, 0,
 452                              SWP_NOMOVE | SWP_NOSIZE | SWP_NOREDRAW) )
 453         {
 454             wxLogLastError(_T("SetWindowPos(HWND_TOP)"));
 455         }
 456
 457         Refresh();
 458     }
 459 #endif // __WXMSW__
 460 }
 461
 462 void wxPopupMenuWindow::Dismiss()
 463 {
 464     if ( HasOpenSubmenu() )
 465     {
 466         wxMenuItem *item = GetCurrentItem();
 467         wxCHECK_RET( item && item->IsSubMenu(), _T("where is our open submenu?") );
 468
 469         wxPopupMenuWindow *win = item->GetSubMenu()->m_popupMenu;
 470         wxCHECK_RET( win, _T("opened submenu is not opened?") );
 471
 472         win->Dismiss();
 473         OnSubmenuDismiss( false );
 474     }
 475
 476     wxPopupTransientWindow::Dismiss();
 477
 478     ResetCurrent();
 479 }
 480
 481 void wxPopupMenuWindow::OnDismiss()
 482 {
 483     // when we are dismissed because the user clicked elsewhere or we lost
 484     // focus in any other way, hide the parent menu as well
 485     HandleDismiss(true);
 486 }
 487
 488 void wxPopupMenuWindow::OnSubmenuDismiss(bool WXUNUSED(dismissParent))
 489 {
 490     m_hasOpenSubMenu = false;
 491 }
 492
 493 void wxPopupMenuWindow::HandleDismiss(bool dismissParent)
 494 {
 495     m_menu->OnDismiss(dismissParent);
 496 }
 497
 498 void wxPopupMenuWindow::DismissAndNotify()
 499 {
 500     Dismiss();
 501     HandleDismiss(true);
 502 }
 503
 504 // ----------------------------------------------------------------------------
 505 // wxPopupMenuWindow geometry
 506 // ----------------------------------------------------------------------------
 507
 508 wxMenuItemIter
 509 wxPopupMenuWindow::GetMenuItemFromPoint(const wxPoint& pt) const
 510 {
 511     // we only use the y coord normally, but still check x in case the point is
 512     // outside the window completely
 513     if ( wxWindow::HitTest(pt) == wxHT_WINDOW_INSIDE )
 514     {
 515         wxCoord y = 0;
 516         for ( wxMenuItemIter node = m_menu->GetMenuItems().GetFirst();
 517               node;
 518               node = node->GetNext() )
 519         {
 520             wxMenuItem *item = node->GetData();
 521             y += item->GetHeight();
 522             if ( y > pt.y )
 523             {
 524                 // found
 525                 return node;
 526             }
 527         }
 528     }
 529
 530     return wxMenuItemIter();
 531 }
 532
 533 // ----------------------------------------------------------------------------
 534 // wxPopupMenuWindow drawing
 535 // ----------------------------------------------------------------------------
 536
 537 void wxPopupMenuWindow::RefreshItem(wxMenuItem *item)
 538 {
 539     wxCHECK_RET( item, _T("can't refresh NULL item") );
 540
 541     wxASSERT_MSG( IsShown(), _T("can't refresh menu which is not shown") );
 542
 543     // FIXME: -1 here because of SetLogicalOrigin(1, 1) in DoDraw()
 544     RefreshRect(wxRect(0, item->GetPosition() - 1,
 545                 m_menu->GetGeometryInfo().GetSize().x, item->GetHeight()));
 546 }
 547
 548 void wxPopupMenuWindow::DoDraw(wxControlRenderer *renderer)
 549 {
 550     // no clipping so far - do we need it? I don't think so as the menu is
 551     // never partially covered as it is always on top of everything
 552
 553     wxDC& dc = renderer->GetDC();
 554     dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
 555
 556     // FIXME: this should be done in the renderer, however when it is fixed
 557     //        wxPopupMenuWindow::RefreshItem() should be changed too!
 558     dc.SetLogicalOrigin(1, 1);
 559
 560     wxRenderer *rend = renderer->GetRenderer();
 561
 562     wxCoord y = 0;
 563     const wxMenuGeometryInfo& gi = m_menu->GetGeometryInfo();
 564     for ( wxMenuItemIter node = m_menu->GetMenuItems().GetFirst();
 565           node;
 566           node = node->GetNext() )
 567     {
 568         wxMenuItem *item = node->GetData();
 569
 570         if ( item->IsSeparator() )
 571         {
 572             rend->DrawMenuSeparator(dc, y, gi);
 573         }
 574         else // not a separator
 575         {
 576             int flags = 0;
 577             if ( item->IsCheckable() )
 578             {
 579                 flags |= wxCONTROL_CHECKABLE;
 580
 581                 if ( item->IsChecked() )
 582                 {
 583                     flags |= wxCONTROL_CHECKED;
 584                 }
 585             }
 586
 587             if ( !item->IsEnabled() )
 588                 flags |= wxCONTROL_DISABLED;
 589
 590             if ( item->IsSubMenu() )
 591                 flags |= wxCONTROL_ISSUBMENU;
 592
 593             if ( item == GetCurrentItem() )
 594                 flags |= wxCONTROL_SELECTED;
 595
 596             wxBitmap bmp;
 597
 598             if ( !item->IsEnabled() )
 599             {
 600                 bmp = item->GetDisabledBitmap();
 601             }
 602
 603             if ( !bmp.Ok() )
 604             {
 605                 // strangely enough, for unchecked item we use the
 606                 // "checked" bitmap because this is the default one - this
 607                 // explains this strange boolean expression
 608                 bmp = item->GetBitmap(!item->IsCheckable() || item->IsChecked());
 609             }
 610
 611             rend->DrawMenuItem
 612                   (
 613                      dc,
 614                      y,
 615                      gi,
 616                      item->GetLabel(),
 617                      item->GetAccelString(),
 618                      bmp,
 619                      flags,
 620                      item->GetAccelIndex()
 621                   );
 622         }
 623
 624         y += item->GetHeight();
 625     }
 626 }
 627
 628 // ----------------------------------------------------------------------------
 629 // wxPopupMenuWindow actions
 630 // ----------------------------------------------------------------------------
 631
 632 void wxPopupMenuWindow::ClickItem(wxMenuItem *item)
 633 {
 634     wxCHECK_RET( item, _T("can't click NULL item") );
 635
 636     wxASSERT_MSG( !item->IsSeparator() && !item->IsSubMenu(),
 637                   _T("can't click this item") );
 638
 639     wxMenu* menu = m_menu;
 640
 641     // close all menus
 642     DismissAndNotify();
 643
 644     menu->ClickItem(item);
 645 }
 646
 647 void wxPopupMenuWindow::OpenSubmenu(wxMenuItem *item, InputMethod how)
 648 {
 649     wxCHECK_RET( item, _T("can't open NULL submenu") );
 650
 651     wxMenu *submenu = item->GetSubMenu();
 652     wxCHECK_RET( submenu, _T("can only open submenus!") );
 653
 654     // FIXME: should take into account the border width
 655     submenu->Popup(ClientToScreen(wxPoint(0, item->GetPosition())),
 656                    wxSize(m_menu->GetGeometryInfo().GetSize().x, 0),
 657                    how == WithKeyboard /* preselect first item then */);
 658
 659     m_hasOpenSubMenu = true;
 660 }
 661
 662 bool wxPopupMenuWindow::ActivateItem(wxMenuItem *item, InputMethod how)
 663 {
 664     // don't activate disabled items
 665     if ( !item || !item->IsEnabled() )
 666     {
 667         return false;
 668     }
 669
 670     // normal menu items generate commands, submenus can be opened and
 671     // the separators don't do anything
 672     if ( item->IsSubMenu() )
 673     {
 674         OpenSubmenu(item, how);
 675     }
 676     else if ( !item->IsSeparator() )
 677     {
 678         ClickItem(item);
 679     }
 680     else // separator, can't activate
 681     {
 682         return false;
 683     }
 684
 685     return true;
 686 }
 687
 688 // ----------------------------------------------------------------------------
 689 // wxPopupMenuWindow input handling
 690 // ----------------------------------------------------------------------------
 691
 692 bool wxPopupMenuWindow::ProcessLeftDown(wxMouseEvent& event)
 693 {
 694     // wxPopupWindowHandler dismisses the window when the mouse is clicked
 695     // outside it which is usually just fine, but there is one case when we
 696     // don't want to do it: if the mouse was clicked on the parent submenu item
 697     // which opens this menu, so check for it
 698
 699     wxPoint pos = event.GetPosition();
 700     if ( HitTest(pos.x, pos.y) == wxHT_WINDOW_OUTSIDE )
 701     {
 702         wxMenu *menu = m_menu->GetParent();
 703         if ( menu )
 704         {
 705             wxPopupMenuWindow *win = menu->m_popupMenu;
 706
 707             wxCHECK_MSG( win, false, _T("parent menu not shown?") );
 708
 709             pos = ClientToScreen(pos);
 710             if ( win->GetMenuItemFromPoint(win->ScreenToClient(pos)) )
 711             {
 712                 // eat the event
 713                 return true;
 714             }
 715             //else: it is outside the parent menu as well, do dismiss this one
 716         }
 717     }
 718
 719     return false;
 720 }
 721
 722 void wxPopupMenuWindow::OnLeftUp(wxMouseEvent& event)
 723 {
 724     wxMenuItemIter node = GetMenuItemFromPoint(event.GetPosition());
 725     if ( node )
 726     {
 727         ActivateItem(node->GetData(), WithMouse);
 728     }
 729 }
 730
 731 void wxPopupMenuWindow::OnMouseMove(wxMouseEvent& event)
 732 {
 733     const wxPoint pt = event.GetPosition();
 734
 735     // we need to ignore extra mouse events: example when this happens is when
 736     // the mouse is on the menu and we open a submenu from keyboard - Windows
 737     // then sends us a dummy mouse move event, we (correctly) determine that it
 738     // happens in the parent menu and so immediately close the just opened
 739     // submenu!
 740 #ifdef __WXMSW__
 741     static wxPoint s_ptLast;
 742     wxPoint ptCur = ClientToScreen(pt);
 743     if ( ptCur == s_ptLast )
 744     {
 745         return;
 746     }
 747
 748     s_ptLast = ptCur;
 749 #endif // __WXMSW__
 750
 751     ProcessMouseMove(pt);
 752
 753     event.Skip();
 754 }
 755
 756 void wxPopupMenuWindow::ProcessMouseMove(const wxPoint& pt)
 757 {
 758     wxMenuItemIter node = GetMenuItemFromPoint(pt);
 759
 760     // don't reset current to NULL here, we only do it when the mouse leaves
 761     // the window (see below)
 762     if ( node )
 763     {
 764         if ( node != m_nodeCurrent )
 765         {
 766             ChangeCurrent(node);
 767
 768             wxMenuItem *item = GetCurrentItem();
 769             if ( CanOpen(item) )
 770             {
 771                 OpenSubmenu(item, WithMouse);
 772             }
 773         }
 774         //else: same item, nothing to do
 775     }
 776     else // not on an item
 777     {
 778         // the last open submenu forwards the mouse move messages to its
 779         // parent, so if the mouse moves to another item of the parent menu,
 780         // this menu is closed and this other item is selected - in the similar
 781         // manner, the top menu forwards the mouse moves to the menubar which
 782         // allows to select another top level menu by just moving the mouse
 783
 784         // we need to translate our client coords to the client coords of the
 785         // window we forward this event to
 786         wxPoint ptScreen = ClientToScreen(pt);
 787
 788         // if the mouse is outside this menu, let the parent one to
 789         // process it
 790         wxMenu *menuParent = m_menu->GetParent();
 791         if ( menuParent )
 792         {
 793             wxPopupMenuWindow *win = menuParent->m_popupMenu;
 794
 795             // if we're shown, the parent menu must be also shown
 796             wxCHECK_RET( win, _T("parent menu is not shown?") );
 797
 798             win->ProcessMouseMove(win->ScreenToClient(ptScreen));
 799         }
 800         else // no parent menu
 801         {
 802             wxMenuBar *menubar = m_menu->GetMenuBar();
 803             if ( menubar )
 804             {
 805                 if ( menubar->ProcessMouseEvent(
 806                             menubar->ScreenToClient(ptScreen)) )
 807                 {
 808                     // menubar has closed this menu and opened another one, probably
 809                     return;
 810                 }
 811             }
 812         }
 813         //else: top level popup menu, no other processing to do
 814     }
 815 }
 816
 817 void wxPopupMenuWindow::OnMouseLeave(wxMouseEvent& event)
 818 {
 819     // due to the artefact of mouse events generation under MSW, we actually
 820     // may get the mouse leave event after the menu had been already dismissed
 821     // and calling ChangeCurrent() would then assert, so don't do it
 822     if ( IsShown() )
 823     {
 824         // we shouldn't change the current them if our submenu is opened and
 825         // mouse moved there, in this case the submenu is responsable for
 826         // handling it
 827         bool resetCurrent;
 828         if ( HasOpenSubmenu() )
 829         {
 830             wxMenuItem *item = GetCurrentItem();
 831             wxCHECK_RET( CanOpen(item), _T("where is our open submenu?") );
 832
 833             wxPopupMenuWindow *win = item->GetSubMenu()->m_popupMenu;
 834             wxCHECK_RET( win, _T("submenu is opened but not shown?") );
 835
 836             // only handle this event if the mouse is not inside the submenu
 837             wxPoint pt = ClientToScreen(event.GetPosition());
 838             resetCurrent =
 839                 win->HitTest(win->ScreenToClient(pt)) == wxHT_WINDOW_OUTSIDE;
 840         }
 841         else
 842         {
 843             // this menu is the last opened
 844             resetCurrent = true;
 845         }
 846
 847         if ( resetCurrent )
 848         {
 849             ChangeCurrent(wxMenuItemIter());
 850         }
 851     }
 852
 853     event.Skip();
 854 }
 855
 856 void wxPopupMenuWindow::OnKeyDown(wxKeyEvent& event)
 857 {
 858     wxMenuBar *menubar = m_menu->GetMenuBar();
 859
 860     if ( menubar )
 861     {
 862         menubar->ProcessEvent(event);
 863     }
 864     else if ( !ProcessKeyDown(event.GetKeyCode()) )
 865     {
 866         event.Skip();
 867     }
 868 }
 869
 870 bool wxPopupMenuWindow::ProcessKeyDown(int key)
 871 {
 872     wxMenuItem *item = GetCurrentItem();
 873
 874     // first let the opened submenu to have it (no test for IsEnabled() here,
 875     // the keys navigate even in a disabled submenu if we had somehow managed
 876     // to open it inspit of this)
 877     if ( HasOpenSubmenu() )
 878     {
 879         wxCHECK_MSG( CanOpen(item), false,
 880                      _T("has open submenu but another item selected?") );
 881
 882         if ( item->GetSubMenu()->ProcessKeyDown(key) )
 883             return true;
 884     }
 885
 886     bool processed = true;
 887
 888     // handle the up/down arrows, home, end, esc and return here, pass the
 889     // left/right arrows to the menu bar except when the right arrow can be
 890     // used to open a submenu
 891     switch ( key )
 892     {
 893         case WXK_LEFT:
 894             // if we're not a top level menu, close us, else leave this to the
 895             // menubar
 896             if ( !m_menu->GetParent() )
 897             {
 898                 processed = false;
 899                 break;
 900             }
 901
 902             // fall through
 903
 904         case WXK_ESCAPE:
 905             // close just this menu
 906             Dismiss();
 907             HandleDismiss(false);
 908             break;
 909
 910         case WXK_RETURN:
 911             processed = ActivateItem(item);
 912             break;
 913
 914         case WXK_HOME:
 915             ChangeCurrent(m_menu->GetMenuItems().GetFirst());
 916             break;
 917
 918         case WXK_END:
 919             ChangeCurrent(m_menu->GetMenuItems().GetLast());
 920             break;
 921
 922         case WXK_UP:
 923         case WXK_DOWN:
 924             {
 925                 bool up = key == WXK_UP;
 926
 927                 wxMenuItemIter nodeStart = up ? GetPrevNode() : GetNextNode(),
 928                                node = nodeStart;
 929                 while ( node && node->GetData()->IsSeparator() )
 930                 {
 931                     node = up ? GetPrevNode(node) : GetNextNode(node);
 932
 933                     if ( node == nodeStart )
 934                     {
 935                         // nothing but separators and disabled items in this
 936                         // menu, break out
 937                         node = wxMenuItemIter();
 938                     }
 939                 }
 940
 941                 if ( node )
 942                 {
 943                     ChangeCurrent(node);
 944                 }
 945                 else
 946                 {
 947                     processed = false;
 948                 }
 949             }
 950             break;
 951
 952         case WXK_RIGHT:
 953             // don't try to reopen an already opened menu
 954             if ( !HasOpenSubmenu() && CanOpen(item) )
 955             {
 956                 OpenSubmenu(item);
 957             }
 958             else
 959             {
 960                 processed = false;
 961             }
 962             break;
 963
 964         default:
 965             // look for the menu item starting with this letter
 966             if ( wxIsalnum((wxChar)key) )
 967             {
 968                 // we want to start from the item after this one because
 969                 // if we're already on the item with the given accel we want to
 970                 // go to the next one, not to stay in place
 971                 wxMenuItemIter nodeStart = GetNextNode();
 972
 973                 // do we have more than one item with this accel?
 974                 bool notUnique = false;
 975
 976                 // translate everything to lower case before comparing
 977                 wxChar chAccel = (wxChar)wxTolower(key);
 978
 979                 // loop through all items searching for the item with this
 980                 // accel
 981                 wxMenuItemIter nodeFound,
 982                                node = nodeStart;
 983                 for ( ;; )
 984                 {
 985                     item = node->GetData();
 986
 987                     int idxAccel = item->GetAccelIndex();
 988                     if ( idxAccel != -1 &&
 989                          wxTolower(item->GetLabel()[(size_t)idxAccel])
 990                             == chAccel )
 991                     {
 992                         // ok, found an item with this accel
 993                         if ( !nodeFound )
 994                         {
 995                             // store it but continue searching as we need to
 996                             // know if it's the only item with this accel or if
 997                             // there are more
 998                             nodeFound = node;
 999                         }
1000                         else // we already had found such item
1001                         {
1002                             notUnique = true;
1003
1004                             // no need to continue further, we won't find
1005                             // anything we don't already know
1006                             break;
1007                         }
1008                     }
1009
1010                     // we want to iterate over all items wrapping around if
1011                     // necessary
1012                     node = GetNextNode(node);
1013                     if ( node == nodeStart )
1014                     {
1015                         // we've seen all nodes
1016                         break;
1017                     }
1018                 }
1019
1020                 if ( nodeFound )
1021                 {
1022                     item = nodeFound->GetData();
1023
1024                     // go to this item anyhow
1025                     ChangeCurrent(nodeFound);
1026
1027                     if ( !notUnique && item->IsEnabled() )
1028                     {
1029                         // unique item with this accel - activate it
1030                         processed = ActivateItem(item);
1031                     }
1032                     //else: just select it but don't activate as the user might
1033                     //      have wanted to activate another item
1034
1035                     // skip "processed = false" below
1036                     break;
1037                 }
1038             }
1039
1040             processed = false;
1041     }
1042
1043     return processed;
1044 }
1045
1046 // ----------------------------------------------------------------------------
1047 // wxMenu
1048 // ----------------------------------------------------------------------------
1049
1050 void wxMenu::Init()
1051 {
1052     m_geometry = NULL;
1053
1054     m_popupMenu = NULL;
1055
1056     m_startRadioGroup = -1;
1057 }
1058
1059 wxMenu::~wxMenu()
1060 {
1061     delete m_geometry;
1062     delete m_popupMenu;
1063 }
1064
1065 // ----------------------------------------------------------------------------
1066 // wxMenu and wxMenuGeometryInfo
1067 // ----------------------------------------------------------------------------
1068
1069 wxMenuGeometryInfo::~wxMenuGeometryInfo()
1070 {
1071 }
1072
1073 const wxMenuGeometryInfo& wxMenu::GetGeometryInfo() const
1074 {
1075     if ( !m_geometry )
1076     {
1077         if ( m_popupMenu )
1078         {
1079             wxConstCast(this, wxMenu)->m_geometry =
1080                 m_popupMenu->GetRenderer()->GetMenuGeometry(m_popupMenu, *this);
1081         }
1082         else
1083         {
1084             wxFAIL_MSG( _T("can't get geometry without window") );
1085         }
1086     }
1087
1088     return *m_geometry;
1089 }
1090
1091 void wxMenu::InvalidateGeometryInfo()
1092 {
1093     if ( m_geometry )
1094     {
1095         delete m_geometry;
1096         m_geometry = NULL;
1097     }
1098 }
1099
1100 // ----------------------------------------------------------------------------
1101 // wxMenu adding/removing items
1102 // ----------------------------------------------------------------------------
1103
1104 void wxMenu::OnItemAdded(wxMenuItem *item)
1105 {
1106     InvalidateGeometryInfo();
1107
1108 #if wxUSE_ACCEL
1109     AddAccelFor(item);
1110 #endif // wxUSE_ACCEL
1111
1112     // the submenus of a popup menu should have the same invoking window as it
1113     // has
1114     if ( m_invokingWindow && item->IsSubMenu() )
1115     {
1116         item->GetSubMenu()->SetInvokingWindow(m_invokingWindow);
1117     }
1118 }
1119
1120 void wxMenu::EndRadioGroup()
1121 {
1122     // we're not inside a radio group any longer
1123     m_startRadioGroup = -1;
1124 }
1125
1126 wxMenuItem* wxMenu::DoAppend(wxMenuItem *item)
1127 {
1128     if ( item->GetKind() == wxITEM_RADIO )
1129     {
1130         int count = GetMenuItemCount();
1131
1132         if ( m_startRadioGroup == -1 )
1133         {
1134             // start a new radio group
1135             m_startRadioGroup = count;
1136
1137             // for now it has just one element
1138             item->SetAsRadioGroupStart();
1139             item->SetRadioGroupEnd(m_startRadioGroup);
1140         }
1141         else // extend the current radio group
1142         {
1143             // we need to update its end item
1144             item->SetRadioGroupStart(m_startRadioGroup);
1145             wxMenuItemIter node = GetMenuItems().Item(m_startRadioGroup);
1146
1147             if ( node )
1148             {
1149                 node->GetData()->SetRadioGroupEnd(count);
1150             }
1151             else
1152             {
1153                 wxFAIL_MSG( _T("where is the radio group start item?") );
1154             }
1155         }
1156     }
1157     else // not a radio item
1158     {
1159         EndRadioGroup();
1160     }
1161
1162     if ( !wxMenuBase::DoAppend(item) )
1163         return NULL;
1164
1165     OnItemAdded(item);
1166
1167     return item;
1168 }
1169
1170 wxMenuItem* wxMenu::DoInsert(size_t pos, wxMenuItem *item)
1171 {
1172     if ( !wxMenuBase::DoInsert(pos, item) )
1173         return NULL;
1174
1175     OnItemAdded(item);
1176
1177     return item;
1178 }
1179
1180 wxMenuItem *wxMenu::DoRemove(wxMenuItem *item)
1181 {
1182     wxMenuItem *itemOld = wxMenuBase::DoRemove(item);
1183
1184     if ( itemOld )
1185     {
1186         InvalidateGeometryInfo();
1187
1188 #if wxUSE_ACCEL
1189         RemoveAccelFor(item);
1190 #endif // wxUSE_ACCEL
1191     }
1192
1193     return itemOld;
1194 }
1195
1196 // ----------------------------------------------------------------------------
1197 // wxMenu attaching/detaching
1198 // ----------------------------------------------------------------------------
1199
1200 void wxMenu::Attach(wxMenuBarBase *menubar)
1201 {
1202     wxMenuBase::Attach(menubar);
1203
1204     wxCHECK_RET( m_menuBar, _T("menubar can't be NULL after attaching") );
1205
1206     // unfortunately, we can't use m_menuBar->GetEventHandler() here because,
1207     // if the menubar is currently showing a menu, its event handler is a
1208     // temporary one installed by wxPopupWindow and so will disappear soon any
1209     // any attempts to use it from the newly attached menu would result in a
1210     // crash
1211     //
1212     // so we use the menubar itself, even if it's a pity as it means we can't
1213     // redirect all menu events by changing the menubar handler (FIXME)
1214     SetNextHandler(m_menuBar);
1215 }
1216
1217 void wxMenu::Detach()
1218 {
1219     wxMenuBase::Detach();
1220 }
1221
1222 // ----------------------------------------------------------------------------
1223 // wxMenu misc functions
1224 // ----------------------------------------------------------------------------
1225
1226 wxWindow *wxMenu::GetRootWindow() const
1227 {
1228     if ( GetMenuBar() )
1229     {
1230         // simple case - a normal menu attached to the menubar
1231         return GetMenuBar();
1232     }
1233
1234     // we're a popup menu but the trouble is that only the top level popup menu
1235     // has a pointer to the invoking window, so we must walk up the menu chain
1236     // if needed
1237     wxWindow *win = GetInvokingWindow();
1238     if ( win )
1239     {
1240         // we already have it
1241         return win;
1242     }
1243
1244     wxMenu *menu = GetParent();
1245     while ( menu )
1246     {
1247         // We are a submenu of a menu of a menubar
1248         if (menu->GetMenuBar())
1249            return menu->GetMenuBar();
1250
1251         win = menu->GetInvokingWindow();
1252         if ( win )
1253             break;
1254
1255         menu = menu->GetParent();
1256     }
1257
1258     // we're probably going to crash in the caller anyhow, but try to detect
1259     // this error as soon as possible
1260     wxASSERT_MSG( win, _T("menu without any associated window?") );
1261
1262     // also remember it in this menu so that we don't have to search for it the
1263     // next time
1264     wxConstCast(this, wxMenu)->m_invokingWindow = win;
1265
1266     return win;
1267 }
1268
1269 wxRenderer *wxMenu::GetRenderer() const
1270 {
1271     // we're going to crash without renderer!
1272     wxCHECK_MSG( m_popupMenu, NULL, _T("neither popup nor menubar menu?") );
1273
1274     return m_popupMenu->GetRenderer();
1275 }
1276
1277 void wxMenu::RefreshItem(wxMenuItem *item)
1278 {
1279     // the item geometry changed, so our might have changed as well
1280     InvalidateGeometryInfo();
1281
1282     if ( IsShown() )
1283     {
1284         // this would be a bug in IsShown()
1285         wxCHECK_RET( m_popupMenu, _T("must have popup window if shown!") );
1286
1287         // recalc geometry to update the item height and such
1288         (void)GetGeometryInfo();
1289
1290         m_popupMenu->RefreshItem(item);
1291     }
1292 }
1293
1294 // ----------------------------------------------------------------------------
1295 // wxMenu showing and hiding
1296 // ----------------------------------------------------------------------------
1297
1298 bool wxMenu::IsShown() const
1299 {
1300     return m_popupMenu && m_popupMenu->IsShown();
1301 }
1302
1303 void wxMenu::OnDismiss(bool dismissParent)
1304 {
1305     if ( m_menuParent )
1306     {
1307         // always notify the parent about submenu disappearance
1308         wxPopupMenuWindow *win = m_menuParent->m_popupMenu;
1309         if ( win )
1310         {
1311             win->OnSubmenuDismiss( true );
1312         }
1313         else
1314         {
1315             wxFAIL_MSG( _T("parent menu not shown?") );
1316         }
1317
1318         // and if we dismiss everything, propagate to parent
1319         if ( dismissParent )
1320         {
1321             // dismissParent is recursive
1322             m_menuParent->Dismiss();
1323             m_menuParent->OnDismiss(true);
1324         }
1325     }
1326     else // no parent menu
1327     {
1328         // notify the menu bar if we're a top level menu
1329         if ( m_menuBar )
1330         {
1331             m_menuBar->OnDismissMenu(dismissParent);
1332         }
1333         else // popup menu
1334         {
1335             wxCHECK_RET( m_invokingWindow, _T("what kind of menu is this?") );
1336
1337             m_invokingWindow->DismissPopupMenu();
1338
1339             // Why reset it here? We need it for sending the event to...
1340             // SetInvokingWindow(NULL);
1341         }
1342     }
1343 }
1344
1345 void wxMenu::Popup(const wxPoint& pos, const wxSize& size, bool selectFirst)
1346 {
1347     // create the popup window if not done yet
1348     if ( !m_popupMenu )
1349     {
1350         m_popupMenu = new wxPopupMenuWindow(GetRootWindow(), this);
1351     }
1352
1353     // select the first item unless disabled
1354     if ( selectFirst )
1355     {
1356         m_popupMenu->SelectFirst();
1357     }
1358
1359     // the geometry might have changed since the last time we were shown, so
1360     // always resize
1361     m_popupMenu->SetClientSize(GetGeometryInfo().GetSize());
1362
1363     // position it as specified
1364     m_popupMenu->Position(pos, size);
1365
1366     // the menu can't have the focus itself (it is a Windows limitation), so
1367     // always keep the focus at the originating window
1368     wxWindow *focus = GetRootWindow();
1369
1370     wxASSERT_MSG( focus, _T("no window to keep focus on?") );
1371
1372     // and show it
1373     m_popupMenu->Popup(focus);
1374 }
1375
1376 void wxMenu::Dismiss()
1377 {
1378     wxCHECK_RET( IsShown(), _T("can't dismiss hidden menu") );
1379
1380     m_popupMenu->Dismiss();
1381 }
1382
1383 // ----------------------------------------------------------------------------
1384 // wxMenu event processing
1385 // ----------------------------------------------------------------------------
1386
1387 bool wxMenu::ProcessKeyDown(int key)
1388 {
1389     wxCHECK_MSG( m_popupMenu, false,
1390                  _T("can't process key events if not shown") );
1391
1392     return m_popupMenu->ProcessKeyDown(key);
1393 }
1394
1395 bool wxMenu::ClickItem(wxMenuItem *item)
1396 {
1397     int isChecked;
1398     if ( item->IsCheckable() )
1399     {
1400         // update the item state
1401         isChecked = !item->IsChecked();
1402
1403         item->Check(isChecked != 0);
1404     }
1405     else
1406     {
1407         // not applicabled
1408         isChecked = -1;
1409     }
1410
1411     return SendEvent(item->GetId(), isChecked);
1412 }
1413
1414 // ----------------------------------------------------------------------------
1415 // wxMenu accel support
1416 // ----------------------------------------------------------------------------
1417
1418 #if wxUSE_ACCEL
1419
1420 bool wxMenu::ProcessAccelEvent(const wxKeyEvent& event)
1421 {
1422     // do we have an item for this accel?
1423     wxMenuItem *item = m_accelTable.GetMenuItem(event);
1424     if ( item && item->IsEnabled() )
1425     {
1426         return ClickItem(item);
1427     }
1428
1429     // try our submenus
1430     for ( wxMenuItemIter node = GetMenuItems().GetFirst();
1431           node;
1432           node = node->GetNext() )
1433     {
1434         const wxMenuItem *item = node->GetData();
1435         if ( item->IsSubMenu() && item->IsEnabled() )
1436         {
1437             // try its elements
1438             if ( item->GetSubMenu()->ProcessAccelEvent(event) )
1439             {
1440                 return true;
1441             }
1442         }
1443     }
1444
1445     return false;
1446 }
1447
1448 void wxMenu::AddAccelFor(wxMenuItem *item)
1449 {
1450     wxAcceleratorEntry *accel = item->GetAccel();
1451     if ( accel )
1452     {
1453         accel->SetMenuItem(item);
1454
1455         m_accelTable.Add(*accel);
1456
1457         delete accel;
1458     }
1459 }
1460
1461 void wxMenu::RemoveAccelFor(wxMenuItem *item)
1462 {
1463     wxAcceleratorEntry *accel = item->GetAccel();
1464     if ( accel )
1465     {
1466         m_accelTable.Remove(*accel);
1467
1468         delete accel;
1469     }
1470 }
1471
1472 #endif // wxUSE_ACCEL
1473
1474 // ----------------------------------------------------------------------------
1475 // wxMenuItem construction
1476 // ----------------------------------------------------------------------------
1477
1478 wxMenuItem::wxMenuItem(wxMenu *parentMenu,
1479                        int id,
1480                        const wxString& text,
1481                        const wxString& help,
1482                        wxItemKind kind,
1483                        wxMenu *subMenu)
1484           : wxMenuItemBase(parentMenu, id, text, help, kind, subMenu)
1485 {
1486     m_posY =
1487     m_height = wxDefaultCoord;
1488
1489     m_radioGroup.start = -1;
1490     m_isRadioGroupStart = false;
1491
1492     m_bmpDisabled = wxNullBitmap;
1493
1494     UpdateAccelInfo();
1495 }
1496
1497 wxMenuItem::~wxMenuItem()
1498 {
1499 }
1500
1501 // ----------------------------------------------------------------------------
1502 // wxMenuItemBase methods implemented here
1503 // ----------------------------------------------------------------------------
1504
1505 /* static */
1506 wxMenuItem *wxMenuItemBase::New(wxMenu *parentMenu,
1507                                 int id,
1508                                 const wxString& name,
1509                                 const wxString& help,
1510                                 wxItemKind kind,
1511                                 wxMenu *subMenu)
1512 {
1513     return new wxMenuItem(parentMenu, id, name, help, kind, subMenu);
1514 }
1515
1516 /* static */
1517 wxString wxMenuItemBase::GetLabelFromText(const wxString& text)
1518 {
1519     return wxStripMenuCodes(text);
1520 }
1521
1522 // ----------------------------------------------------------------------------
1523 // wxMenuItem operations
1524 // ----------------------------------------------------------------------------
1525
1526 void wxMenuItem::NotifyMenu()
1527 {
1528     m_parentMenu->RefreshItem(this);
1529 }
1530
1531 void wxMenuItem::UpdateAccelInfo()
1532 {
1533     m_indexAccel = wxControl::FindAccelIndex(m_text);
1534
1535     // will be empty if the text contains no TABs - ok
1536     m_strAccel = m_text.AfterFirst(_T('\t'));
1537 }
1538
1539 void wxMenuItem::SetText(const wxString& text)
1540 {
1541     if ( text != m_text )
1542     {
1543         // first call the base class version to change m_text
1544         wxMenuItemBase::SetText(text);
1545
1546         UpdateAccelInfo();
1547
1548         NotifyMenu();
1549     }
1550 }
1551
1552 void wxMenuItem::SetCheckable(bool checkable)
1553 {
1554     if ( checkable != IsCheckable() )
1555     {
1556         wxMenuItemBase::SetCheckable(checkable);
1557
1558         NotifyMenu();
1559     }
1560 }
1561
1562 void wxMenuItem::SetBitmaps(const wxBitmap& bmpChecked,
1563                             const wxBitmap& bmpUnchecked)
1564 {
1565     m_bmpChecked = bmpChecked;
1566     m_bmpUnchecked = bmpUnchecked;
1567
1568     NotifyMenu();
1569 }
1570
1571 void wxMenuItem::Enable(bool enable)
1572 {
1573     if ( enable != m_isEnabled )
1574     {
1575         wxMenuItemBase::Enable(enable);
1576
1577         NotifyMenu();
1578     }
1579 }
1580
1581 void wxMenuItem::Check(bool check)
1582 {
1583     wxCHECK_RET( IsCheckable(), wxT("only checkable items may be checked") );
1584
1585     if ( m_isChecked == check )
1586         return;
1587
1588     if ( GetKind() == wxITEM_RADIO )
1589     {
1590         // it doesn't make sense to uncheck a radio item - what would this do?
1591         if ( !check )
1592             return;
1593
1594         // get the index of this item in the menu
1595         const wxMenuItemList& items = m_parentMenu->GetMenuItems();
1596         int pos = items.IndexOf(this);
1597         wxCHECK_RET( pos != wxNOT_FOUND,
1598                      _T("menuitem not found in the menu items list?") );
1599
1600         // get the radio group range
1601         int start,
1602             end;
1603
1604         if ( m_isRadioGroupStart )
1605         {
1606             // we already have all information we need
1607             start = pos;
1608             end = m_radioGroup.end;
1609         }
1610         else // next radio group item
1611         {
1612             // get the radio group end from the start item
1613             start = m_radioGroup.start;
1614             end = items.Item(start)->GetData()->m_radioGroup.end;
1615         }
1616
1617         // also uncheck all the other items in this radio group
1618         wxMenuItemIter node = items.Item(start);
1619         for ( int n = start; n <= end && node; n++ )
1620         {
1621             if ( n != pos )
1622             {
1623                 node->GetData()->m_isChecked = false;
1624             }
1625             node = node->GetNext();
1626         }
1627     }
1628
1629     wxMenuItemBase::Check(check);
1630
1631     NotifyMenu();
1632 }
1633
1634 // radio group stuff
1635 // -----------------
1636
1637 void wxMenuItem::SetAsRadioGroupStart()
1638 {
1639     m_isRadioGroupStart = true;
1640 }
1641
1642 void wxMenuItem::SetRadioGroupStart(int start)
1643 {
1644     wxASSERT_MSG( !m_isRadioGroupStart,
1645                   _T("should only be called for the next radio items") );
1646
1647     m_radioGroup.start = start;
1648 }
1649
1650 void wxMenuItem::SetRadioGroupEnd(int end)
1651 {
1652     wxASSERT_MSG( m_isRadioGroupStart,
1653                   _T("should only be called for the first radio item") );
1654
1655     m_radioGroup.end = end;
1656 }
1657
1658 // ----------------------------------------------------------------------------
1659 // wxMenuBar creation
1660 // ----------------------------------------------------------------------------
1661
1662 void wxMenuBar::Init()
1663 {
1664     m_frameLast = NULL;
1665
1666     m_current = -1;
1667
1668     m_menuShown = NULL;
1669
1670     m_shouldShowMenu = false;
1671 }
1672
1673 wxMenuBar::wxMenuBar(size_t n, wxMenu *menus[], const wxString titles[], long WXUNUSED(style))
1674 {
1675     Init();
1676
1677     for (size_t i = 0; i < n; ++i )
1678         Append(menus[i], titles[i]);
1679 }
1680
1681 void wxMenuBar::Attach(wxFrame *frame)
1682 {
1683     // maybe you really wanted to call Detach()?
1684     wxCHECK_RET( frame, _T("wxMenuBar::Attach(NULL) called") );
1685
1686     wxMenuBarBase::Attach(frame);
1687
1688     if ( IsCreated() )
1689     {
1690         // reparent if necessary
1691         if ( m_frameLast != frame )
1692         {
1693             Reparent(frame);
1694         }
1695
1696         // show it back - was hidden by Detach()
1697         Show();
1698     }
1699     else // not created yet, do it now
1700     {
1701         // we have no way to return the error from here anyhow :-(
1702         (void)Create(frame, wxID_ANY);
1703
1704         SetCursor(wxCURSOR_ARROW);
1705
1706         SetFont(wxSystemSettings::GetFont(wxSYS_SYSTEM_FONT));
1707
1708         // calculate and set our height (it won't be changed any more)
1709         SetSize(wxDefaultCoord, GetBestSize().y);
1710     }
1711
1712     // remember the last frame which had us to avoid unnecessarily reparenting
1713     // above
1714     m_frameLast = frame;
1715 }
1716
1717 void wxMenuBar::Detach()
1718 {
1719     // don't delete the window because we may be reattached later, just hide it
1720     if ( m_frameLast )
1721     {
1722         Hide();
1723     }
1724
1725     wxMenuBarBase::Detach();
1726 }
1727
1728 wxMenuBar::~wxMenuBar()
1729 {
1730 }
1731
1732 // ----------------------------------------------------------------------------
1733 // wxMenuBar adding/removing items
1734 // ----------------------------------------------------------------------------
1735
1736 bool wxMenuBar::Append(wxMenu *menu, const wxString& title)
1737 {
1738     return Insert(GetCount(), menu, title);
1739 }
1740
1741 bool wxMenuBar::Insert(size_t pos, wxMenu *menu, const wxString& title)
1742 {
1743     if ( !wxMenuBarBase::Insert(pos, menu, title) )
1744         return false;
1745
1746     wxMenuInfo *info = new wxMenuInfo(title);
1747     m_menuInfos.Insert(info, pos);
1748
1749     RefreshAllItemsAfter(pos);
1750
1751     return true;
1752 }
1753
1754 wxMenu *wxMenuBar::Replace(size_t pos, wxMenu *menu, const wxString& title)
1755 {
1756     wxMenu *menuOld = wxMenuBarBase::Replace(pos, menu, title);
1757
1758     if ( menuOld )
1759     {
1760         wxMenuInfo& info = m_menuInfos[pos];
1761
1762         info.SetLabel(title);
1763
1764         // even if the old menu was disabled, the new one is not any more
1765         info.SetEnabled();
1766
1767         // even if we change only this one, the new label has different width,
1768         // so we need to refresh everything beyond this item as well
1769         RefreshAllItemsAfter(pos);
1770     }
1771
1772     return menuOld;
1773 }
1774
1775 wxMenu *wxMenuBar::Remove(size_t pos)
1776 {
1777     wxMenu *menuOld = wxMenuBarBase::Remove(pos);
1778
1779     if ( menuOld )
1780     {
1781         m_menuInfos.RemoveAt(pos);
1782
1783         // this doesn't happen too often, so don't try to be too smart - just
1784         // refresh everything
1785         Refresh();
1786     }
1787
1788     return menuOld;
1789 }
1790
1791 // ----------------------------------------------------------------------------
1792 // wxMenuBar top level menus access
1793 // ----------------------------------------------------------------------------
1794
1795 wxCoord wxMenuBar::GetItemWidth(size_t pos) const
1796 {
1797     return m_menuInfos[pos].GetWidth(wxConstCast(this, wxMenuBar));
1798 }
1799
1800 void wxMenuBar::EnableTop(size_t pos, bool enable)
1801 {
1802     wxCHECK_RET( pos < GetCount(), _T("invalid index in EnableTop") );
1803
1804     if ( enable != m_menuInfos[pos].IsEnabled() )
1805     {
1806         m_menuInfos[pos].SetEnabled(enable);
1807
1808         RefreshItem(pos);
1809     }
1810     //else: nothing to do
1811 }
1812
1813 bool wxMenuBar::IsEnabledTop(size_t pos) const
1814 {
1815     wxCHECK_MSG( pos < GetCount(), false, _T("invalid index in IsEnabledTop") );
1816
1817     return m_menuInfos[pos].IsEnabled();
1818 }
1819
1820 void wxMenuBar::SetLabelTop(size_t pos, const wxString& label)
1821 {
1822     wxCHECK_RET( pos < GetCount(), _T("invalid index in EnableTop") );
1823
1824     if ( label != m_menuInfos[pos].GetLabel() )
1825     {
1826         m_menuInfos[pos].SetLabel(label);
1827
1828         RefreshItem(pos);
1829     }
1830     //else: nothing to do
1831 }
1832
1833 wxString wxMenuBar::GetLabelTop(size_t pos) const
1834 {
1835     wxCHECK_MSG( pos < GetCount(), wxEmptyString, _T("invalid index in GetLabelTop") );
1836
1837     return m_menuInfos[pos].GetLabel();
1838 }
1839
1840 // ----------------------------------------------------------------------------
1841 // wxMenuBar drawing
1842 // ----------------------------------------------------------------------------
1843
1844 void wxMenuBar::RefreshAllItemsAfter(size_t pos)
1845 {
1846     if ( !IsCreated() )
1847     {
1848         // no need to refresh if nothing is shown yet
1849         return;
1850     }
1851
1852     wxRect rect = GetItemRect(pos);
1853     rect.width = GetClientSize().x - rect.x;
1854     RefreshRect(rect);
1855 }
1856
1857 void wxMenuBar::RefreshItem(size_t pos)
1858 {
1859     wxCHECK_RET( pos != (size_t)-1,
1860                  _T("invalid item in wxMenuBar::RefreshItem") );
1861
1862     if ( !IsCreated() )
1863     {
1864         // no need to refresh if nothing is shown yet
1865         return;
1866     }
1867
1868     RefreshRect(GetItemRect(pos));
1869 }
1870
1871 void wxMenuBar::DoDraw(wxControlRenderer *renderer)
1872 {
1873     wxDC& dc = renderer->GetDC();
1874     dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
1875
1876     // redraw only the items which must be redrawn
1877
1878     // we don't have to use GetUpdateClientRect() here because our client rect
1879     // is the same as total one
1880     wxRect rectUpdate = GetUpdateRegion().GetBox();
1881
1882     int flagsMenubar = GetStateFlags();
1883
1884     wxRect rect;
1885     rect.y = 0;
1886     rect.height = GetClientSize().y;
1887
1888     wxCoord x = 0;
1889     size_t count = GetCount();
1890     for ( size_t n = 0; n < count; n++ )
1891     {
1892         if ( x > rectUpdate.GetRight() )
1893         {
1894             // all remaining items are to the right of rectUpdate
1895             break;
1896         }
1897
1898         rect.x = x;
1899         rect.width = GetItemWidth(n);
1900         x += rect.width;
1901         if ( x < rectUpdate.x )
1902         {
1903             // this item is still to the left of rectUpdate
1904             continue;
1905         }
1906
1907         int flags = flagsMenubar;
1908         if ( m_current != -1 && n == (size_t)m_current )
1909         {
1910             flags |= wxCONTROL_SELECTED;
1911         }
1912
1913         if ( !IsEnabledTop(n) )
1914         {
1915             flags |= wxCONTROL_DISABLED;
1916         }
1917
1918         GetRenderer()->DrawMenuBarItem
1919                        (
1920                             dc,
1921                             rect,
1922                             m_menuInfos[n].GetLabel(),
1923                             flags,
1924                             m_menuInfos[n].GetAccelIndex()
1925                        );
1926     }
1927 }
1928
1929 // ----------------------------------------------------------------------------
1930 // wxMenuBar geometry
1931 // ----------------------------------------------------------------------------
1932
1933 wxRect wxMenuBar::GetItemRect(size_t pos) const
1934 {
1935     wxASSERT_MSG( pos < GetCount(), _T("invalid menu bar item index") );
1936     wxASSERT_MSG( IsCreated(), _T("can't call this method yet") );
1937
1938     wxRect rect;
1939     rect.x =
1940     rect.y = 0;
1941     rect.height = GetClientSize().y;
1942
1943     for ( size_t n = 0; n < pos; n++ )
1944     {
1945         rect.x += GetItemWidth(n);
1946     }
1947
1948     rect.width = GetItemWidth(pos);
1949
1950     return rect;
1951 }
1952
1953 wxSize wxMenuBar::DoGetBestClientSize() const
1954 {
1955     wxSize size;
1956     if ( GetMenuCount() > 0 )
1957     {
1958         wxClientDC dc(wxConstCast(this, wxMenuBar));
1959         dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
1960         dc.GetTextExtent(GetLabelTop(0), &size.x, &size.y);
1961
1962         // adjust for the renderer we use
1963         size = GetRenderer()->GetMenuBarItemSize(size);
1964     }
1965     else // empty menubar
1966     {
1967         size.x =
1968         size.y = 0;
1969     }
1970
1971     // the width is arbitrary, of course, for horizontal menubar
1972     size.x = 100;
1973
1974     return size;
1975 }
1976
1977 int wxMenuBar::GetMenuFromPoint(const wxPoint& pos) const
1978 {
1979     if ( pos.x < 0 || pos.y < 0 || pos.y > GetClientSize().y )
1980         return -1;
1981
1982     // do find it
1983     wxCoord x = 0;
1984     size_t count = GetCount();
1985     for ( size_t item = 0; item < count; item++ )
1986     {
1987         x += GetItemWidth(item);
1988
1989         if ( x > pos.x )
1990         {
1991             return item;
1992         }
1993     }
1994
1995     // to the right of the last menu item
1996     return -1;
1997 }
1998
1999 // ----------------------------------------------------------------------------
2000 // wxMenuBar menu operations
2001 // ----------------------------------------------------------------------------
2002
2003 void wxMenuBar::SelectMenu(size_t pos)
2004 {
2005     SetFocus();
2006     wxLogTrace(_T("mousecapture"), _T("Capturing mouse from wxMenuBar::SelectMenu"));
2007     CaptureMouse();
2008
2009     DoSelectMenu(pos);
2010 }
2011
2012 void wxMenuBar::DoSelectMenu(size_t pos)
2013 {
2014     wxCHECK_RET( pos < GetCount(), _T("invalid menu index in DoSelectMenu") );
2015
2016     int posOld = m_current;
2017
2018     m_current = pos;
2019
2020     if ( posOld != -1 )
2021     {
2022         // close the previous menu
2023         if ( IsShowingMenu() )
2024         {
2025             // restore m_shouldShowMenu flag after DismissMenu() which resets
2026             // it to false
2027             bool old = m_shouldShowMenu;
2028
2029             DismissMenu();
2030
2031             m_shouldShowMenu = old;
2032         }
2033
2034         RefreshItem((size_t)posOld);
2035     }
2036
2037     RefreshItem(pos);
2038 }
2039
2040 void wxMenuBar::PopupMenu(size_t pos)
2041 {
2042     wxCHECK_RET( pos < GetCount(), _T("invalid menu index in PopupCurrentMenu") );
2043
2044     SetFocus();
2045     DoSelectMenu(pos);
2046     PopupCurrentMenu();
2047 }
2048
2049 // ----------------------------------------------------------------------------
2050 // wxMenuBar input handing
2051 // ----------------------------------------------------------------------------
2052
2053 /*
2054    Note that wxMenuBar doesn't use wxInputHandler but handles keyboard and
2055    mouse in the same way under all platforms. This is because it doesn't derive
2056    from wxControl (which works with input handlers) but directly from wxWindow.
2057
2058    Also, menu bar input handling is rather simple, so maybe it's not really
2059    worth making it themeable - at least I've decided against doing it now as it
2060    would merging the changes back into trunk more difficult. But it still could
2061    be done later if really needed.
2062  */
2063
2064 void wxMenuBar::OnKillFocus(wxFocusEvent& event)
2065 {
2066     if ( m_current != -1 )
2067     {
2068         RefreshItem((size_t)m_current);
2069
2070         m_current = -1;
2071     }
2072
2073     event.Skip();
2074 }
2075
2076 void wxMenuBar::OnLeftDown(wxMouseEvent& event)
2077 {
2078     if ( HasCapture() )
2079     {
2080         OnDismiss();
2081
2082         event.Skip();
2083     }
2084     else // we didn't have mouse capture, capture it now
2085     {
2086         m_current = GetMenuFromPoint(event.GetPosition());
2087         if ( m_current == -1 )
2088         {
2089             // unfortunately, we can't prevent wxMSW from giving us the focus,
2090             // so we can only give it back
2091             GiveAwayFocus();
2092         }
2093         else // on item
2094         {
2095             wxLogTrace(_T("mousecapture"), _T("Capturing mouse from wxMenuBar::OnLeftDown"));
2096             CaptureMouse();
2097
2098             // show it as selected
2099             RefreshItem((size_t)m_current);
2100
2101             // show the menu
2102             PopupCurrentMenu(false /* don't select first item - as Windows does */);
2103         }
2104     }
2105 }
2106
2107 void wxMenuBar::OnMouseMove(wxMouseEvent& event)
2108 {
2109     if ( HasCapture() )
2110     {
2111         (void)ProcessMouseEvent(event.GetPosition());
2112     }
2113     else
2114     {
2115         event.Skip();
2116     }
2117 }
2118
2119 bool wxMenuBar::ProcessMouseEvent(const wxPoint& pt)
2120 {
2121     // a hack to ignore the extra mouse events MSW sends us: this is similar to
2122     // wxUSE_MOUSEEVENT_HACK in wxWin itself but it isn't enough for us here as
2123     // we get the messages from different windows (old and new popup menus for
2124     // example)
2125 #ifdef __WXMSW__
2126     static wxPoint s_ptLast;
2127     if ( pt == s_ptLast )
2128     {
2129         return false;
2130     }
2131
2132     s_ptLast = pt;
2133 #endif // __WXMSW__
2134
2135     int currentNew = GetMenuFromPoint(pt);
2136     if ( (currentNew == -1) || (currentNew == m_current) )
2137     {
2138         return false;
2139     }
2140
2141     // select the new active item
2142     DoSelectMenu(currentNew);
2143
2144     // show the menu if we know that we should, even if we hadn't been showing
2145     // it before (this may happen if the previous menu was disabled)
2146     if ( m_shouldShowMenu && !m_menuShown)
2147     {
2148         // open the new menu if the old one we closed had been opened
2149         PopupCurrentMenu(false /* don't select first item - as Windows does */);
2150     }
2151
2152     return true;
2153 }
2154
2155 void wxMenuBar::OnKeyDown(wxKeyEvent& event)
2156 {
2157     // ensure that we have a current item - we might not have it if we're
2158     // given the focus with Alt or F10 press (and under GTK+ the menubar
2159     // somehow gets the keyboard events even when it doesn't have focus...)
2160     if ( m_current == -1 )
2161     {
2162         if ( !HasCapture() )
2163         {
2164             SelectMenu(0);
2165         }
2166         else // we do have capture
2167         {
2168             // we always maintain a valid current item while we're in modal
2169             // state (i.e. have the capture)
2170             wxFAIL_MSG( _T("how did we manage to lose current item?") );
2171
2172             return;
2173         }
2174     }
2175
2176     int key = event.GetKeyCode();
2177
2178     // first let the menu have it
2179     if ( IsShowingMenu() && m_menuShown->ProcessKeyDown(key) )
2180     {
2181         return;
2182     }
2183
2184     // cycle through the menu items when left/right arrows are pressed and open
2185     // the menu when up/down one is
2186     switch ( key )
2187     {
2188         case WXK_ALT:
2189             // Alt must be processed at wxWindow level too
2190             event.Skip();
2191             // fall through
2192
2193         case WXK_ESCAPE:
2194             // remove the selection and give the focus away
2195             if ( m_current != -1 )
2196             {
2197                 if ( IsShowingMenu() )
2198                 {
2199                     DismissMenu();
2200                 }
2201
2202                 OnDismiss();
2203             }
2204             break;
2205
2206         case WXK_LEFT:
2207         case WXK_RIGHT:
2208             {
2209                 size_t count = GetCount();
2210                 if ( count == 1 )
2211                 {
2212                     // the item won't change anyhow
2213                     break;
2214                 }
2215                 //else: otherwise, it will
2216
2217                 // remember if we were showing a menu - if we did, we should
2218                 // show the new menu after changing the item
2219                 bool wasMenuOpened = IsShowingMenu();
2220                 if ( wasMenuOpened )
2221                 {
2222                     DismissMenu();
2223                 }
2224
2225                 // cast is safe as we tested for -1 above
2226                 size_t currentNew = (size_t)m_current;
2227
2228                 if ( key == WXK_LEFT )
2229                 {
2230                     if ( currentNew-- == 0 )
2231                         currentNew = count - 1;
2232                 }
2233                 else // right
2234                 {
2235                     if ( ++currentNew == count )
2236                         currentNew = 0;
2237                 }
2238
2239                 DoSelectMenu(currentNew);
2240
2241                 if ( wasMenuOpened )
2242                 {
2243                     PopupCurrentMenu();
2244                 }
2245             }
2246             break;
2247
2248         case WXK_DOWN:
2249         case WXK_UP:
2250         case WXK_RETURN:
2251             // open the menu
2252             PopupCurrentMenu();
2253             break;
2254
2255         default:
2256             // letters open the corresponding menu
2257             {
2258                 bool unique;
2259                 int idxFound = FindNextItemForAccel(m_current, key, &unique);
2260
2261                 if ( idxFound != -1 )
2262                 {
2263                     if ( IsShowingMenu() )
2264                     {
2265                         DismissMenu();
2266                     }
2267
2268                     DoSelectMenu((size_t)idxFound);
2269
2270                     // if the item is not unique, just select it but don't
2271                     // activate as the user might have wanted to activate
2272                     // another item
2273                     //
2274                     // also, don't try to open a disabled menu
2275                     if ( unique && IsEnabledTop((size_t)idxFound) )
2276                     {
2277                         // open the menu
2278                         PopupCurrentMenu();
2279                     }
2280
2281                     // skip the "event.Skip()" below
2282                     break;
2283                 }
2284             }
2285
2286             event.Skip();
2287     }
2288 }
2289
2290 // ----------------------------------------------------------------------------
2291 // wxMenuBar accel handling
2292 // ----------------------------------------------------------------------------
2293
2294 int wxMenuBar::FindNextItemForAccel(int idxStart, int key, bool *unique) const
2295 {
2296     if ( !wxIsalnum((wxChar)key) )
2297     {
2298         // we only support letters/digits as accels
2299         return -1;
2300     }
2301
2302     // do we have more than one item with this accel?
2303     if ( unique )
2304         *unique = true;
2305
2306     // translate everything to lower case before comparing
2307     wxChar chAccel = (wxChar)wxTolower(key);
2308
2309     // the index of the item with this accel
2310     int idxFound = -1;
2311
2312     // loop through all items searching for the item with this
2313     // accel starting at the item after the current one
2314     int count = GetCount();
2315     int n = idxStart == -1 ? 0 : idxStart + 1;
2316
2317     if ( n == count )
2318     {
2319         // wrap
2320         n = 0;
2321     }
2322
2323     idxStart = n;
2324     for ( ;; )
2325     {
2326         const wxMenuInfo& info = m_menuInfos[n];
2327
2328         int idxAccel = info.GetAccelIndex();
2329         if ( idxAccel != -1 &&
2330              wxTolower(info.GetLabel()[(size_t)idxAccel])
2331                 == chAccel )
2332         {
2333             // ok, found an item with this accel
2334             if ( idxFound == -1 )
2335             {
2336                 // store it but continue searching as we need to
2337                 // know if it's the only item with this accel or if
2338                 // there are more
2339                 idxFound = n;
2340             }
2341             else // we already had found such item
2342             {
2343                 if ( unique )
2344                     *unique = false;
2345
2346                 // no need to continue further, we won't find
2347                 // anything we don't already know
2348                 break;
2349             }
2350         }
2351
2352         // we want to iterate over all items wrapping around if
2353         // necessary
2354         if ( ++n == count )
2355         {
2356             // wrap
2357             n = 0;
2358         }
2359
2360         if ( n == idxStart )
2361         {
2362             // we've seen all items
2363             break;
2364         }
2365     }
2366
2367     return idxFound;
2368 }
2369
2370 #if wxUSE_ACCEL
2371
2372 bool wxMenuBar::ProcessAccelEvent(const wxKeyEvent& event)
2373 {
2374     size_t n = 0;
2375     for ( wxMenuList::compatibility_iterator node = m_menus.GetFirst();
2376           node;
2377           node = node->GetNext(), n++ )
2378     {
2379         // accels of the items in the disabled menus shouldn't work
2380         if ( m_menuInfos[n].IsEnabled() )
2381         {
2382             if ( node->GetData()->ProcessAccelEvent(event) )
2383             {
2384                 // menu processed it
2385                 return true;
2386             }
2387         }
2388     }
2389
2390     // not found
2391     return false;
2392 }
2393
2394 #endif // wxUSE_ACCEL
2395
2396 // ----------------------------------------------------------------------------
2397 // wxMenuBar menus showing
2398 // ----------------------------------------------------------------------------
2399
2400 void wxMenuBar::PopupCurrentMenu(bool selectFirst)
2401 {
2402     wxCHECK_RET( m_current != -1, _T("no menu to popup") );
2403
2404     // forgot to call DismissMenu()?
2405     wxASSERT_MSG( !m_menuShown, _T("shouldn't show two menus at once!") );
2406
2407     // in any case, we should show it - even if we won't
2408     m_shouldShowMenu = true;
2409
2410     if ( IsEnabledTop(m_current) )
2411     {
2412         // remember the menu we show
2413         m_menuShown = GetMenu(m_current);
2414
2415         // we don't show the menu at all if it has no items
2416         if ( !m_menuShown->IsEmpty() )
2417         {
2418             // position it correctly: note that we must use screen coords and
2419             // that we pass 0 as width to position the menu exactly below the
2420             // item, not to the right of it
2421             wxRect rectItem = GetItemRect(m_current);
2422
2423             m_menuShown->SetInvokingWindow(m_frameLast);
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 ( ReleaseMouseCapture() )
2459         wxLogTrace(_T("mousecapture"), _T("Releasing mouse from wxMenuBar::OnDismiss"));
2460
2461     if ( m_current != -1 )
2462     {
2463         size_t current = m_current;
2464         m_current = -1;
2465
2466         RefreshItem(current);
2467     }
2468
2469     GiveAwayFocus();
2470 }
2471
2472 bool wxMenuBar::ReleaseMouseCapture()
2473 {
2474 #ifdef __WXX11__
2475     // With wxX11, when a menu is closed by clicking away from it, a control
2476     // under the click will still get an event, even though the menu has the
2477     // capture (bug?). So that control may already have taken the capture by
2478     // this point, preventing us from releasing the menu's capture. So to work
2479     // around this, we release both captures, then put back the control's
2480     // capture.
2481     wxWindow *capture = GetCapture();
2482     if ( capture )
2483     {
2484         capture->ReleaseMouse();
2485
2486         if ( capture == this )
2487             return true;
2488
2489         bool had = HasCapture();
2490
2491         if ( had )
2492             ReleaseMouse();
2493
2494         capture->CaptureMouse();
2495
2496         return had;
2497     }
2498 #else
2499     if ( HasCapture() )
2500     {
2501         ReleaseMouse();
2502         return true;
2503     }
2504 #endif
2505     return false;
2506 }
2507
2508 void wxMenuBar::GiveAwayFocus()
2509 {
2510     GetFrame()->SetFocus();
2511 }
2512
2513 // ----------------------------------------------------------------------------
2514 // popup menu support
2515 // ----------------------------------------------------------------------------
2516
2517 wxEventLoop *wxWindow::ms_evtLoopPopup = NULL;
2518
2519 bool wxWindow::DoPopupMenu(wxMenu *menu, int x, int y)
2520 {
2521     wxCHECK_MSG( !ms_evtLoopPopup, false,
2522                  _T("can't show more than one popup menu at a time") );
2523
2524 #ifdef __WXMSW__
2525     // we need to change the cursor before showing the menu as, apparently, no
2526     // cursor changes took place while the mouse is captured
2527     wxCursor cursorOld = GetCursor();
2528     SetCursor(wxCURSOR_ARROW);
2529 #endif // __WXMSW__
2530
2531 #if 0
2532     // flash any delayed log messages before showing the menu, otherwise it
2533     // could be dismissed (because it would lose focus) immediately after being
2534     // shown
2535     wxLog::FlushActive();
2536
2537     // some controls update themselves from OnIdle() call - let them do it
2538     wxTheApp->ProcessIdle();
2539
2540     // if the window hadn't been refreshed yet, the menu can adversely affect
2541     // its next OnPaint() handler execution - i.e. scrolled window refresh
2542     // logic breaks then as it scrolls part of the menu which hadn't been there
2543     // when the update event was generated into view
2544     Update();
2545 #endif // 0
2546
2547     menu->SetInvokingWindow(this);
2548
2549     // wxLogDebug( "Name of invoking window %s", menu->GetInvokingWindow()->GetName().c_str() );
2550
2551     menu->Popup(ClientToScreen(wxPoint(x, y)), wxSize(0,0));
2552
2553     // this is not very useful if the menu was popped up because of the mouse
2554     // click but I think it is nice to do when it appears because of a key
2555     // press (i.e. Windows menu key)
2556     //
2557     // Windows itself doesn't do it, but IMHO this is nice
2558     WarpPointer(x, y);
2559
2560     // we have to redirect all keyboard input to the menu temporarily
2561     PushEventHandler(new wxMenuKbdRedirector(menu));
2562
2563     // enter the local modal loop
2564     ms_evtLoopPopup = new wxEventLoop;
2565     ms_evtLoopPopup->Run();
2566
2567     delete ms_evtLoopPopup;
2568     ms_evtLoopPopup = NULL;
2569
2570     // remove the handler
2571     PopEventHandler(true /* delete it */);
2572
2573     menu->SetInvokingWindow(NULL);
2574
2575 #ifdef __WXMSW__
2576     SetCursor(cursorOld);
2577 #endif // __WXMSW__
2578
2579     return true;
2580 }
2581
2582 void wxWindow::DismissPopupMenu()
2583 {
2584     wxCHECK_RET( ms_evtLoopPopup, _T("no popup menu shown") );
2585
2586     ms_evtLoopPopup->Exit();
2587 }
2588
2589 #endif // wxUSE_MENUS