src/univ/menu.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        univ/menu.cpp
   3 // Purpose:     wxMenuItem, wxMenu and wxMenuBar implementation
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     25.08.00
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2000 SciTech Software, Inc. (www.scitechsoft.com)
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "univmenuitem.h"
  22     #pragma implementation "univmenu.h"
  23 #endif
  24
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/dynarray.h"
  33     #include "wx/control.h"      // for FindAccelIndex()
  34     #include "wx/menu.h"
  35     #include "wx/settings.h"
  36     #include "wx/accel.h"
  37     #include "wx/log.h"
  38 #endif // WX_PRECOMP
  39
  40 #if wxUSE_MENUS
  41
  42 #include "wx/popupwin.h"
  43 #include "wx/evtloop.h"
  44 #include "wx/dcclient.h"
  45 #include "wx/frame.h"
  46
  47 #include "wx/univ/renderer.h"
  48
  49 #ifdef __WXMSW__
  50     #include "wx/msw/private.h"
  51 #endif // __WXMSW__
  52
  53 // ----------------------------------------------------------------------------
  54 // wxMenuInfo contains all extra information about top level menus we need
  55 // ----------------------------------------------------------------------------
  56
  57 class WXDLLEXPORT wxMenuInfo
  58 {
  59 public:
  60     // ctor
  61     wxMenuInfo(const wxString& text)
  62     {
  63         SetLabel(text);
  64         SetEnabled();
  65     }
  66
  67     // modifiers
  68
  69     void SetLabel(const wxString& text)
  70     {
  71         // remember the accel char (may be -1 if none)
  72         m_indexAccel = wxControl::FindAccelIndex(text, &m_label);
  73
  74         // calculate the width later, after the menu bar is created
  75         m_width = 0;
  76     }
  77
  78     void SetEnabled(bool enabled = true) { m_isEnabled = enabled; }
  79
  80     // accessors
  81
  82     const wxString& GetLabel() const { return m_label; }
  83     bool IsEnabled() const { return m_isEnabled; }
  84     wxCoord GetWidth(wxMenuBar *menubar) const
  85     {
  86         if ( !m_width )
  87         {
  88             wxConstCast(this, wxMenuInfo)->CalcWidth(menubar);
  89         }
  90
  91         return m_width;
  92     }
  93
  94     int GetAccelIndex() const { return m_indexAccel; }
  95
  96 private:
  97     void CalcWidth(wxMenuBar *menubar)
  98     {
  99         wxSize size;
 100         wxClientDC dc(menubar);
 101         dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
 102         dc.GetTextExtent(m_label, &size.x, &size.y);
 103
 104         // adjust for the renderer we use and store the width
 105         m_width = menubar->GetRenderer()->GetMenuBarItemSize(size).x;
 106     }
 107
 108     wxString m_label;
 109     wxCoord m_width;
 110     int m_indexAccel;
 111     bool m_isEnabled;
 112 };
 113
 114 #include "wx/arrimpl.cpp"
 115
 116 WX_DEFINE_OBJARRAY(wxMenuInfoArray);
 117
 118 // ----------------------------------------------------------------------------
 119 // wxPopupMenuWindow: a popup window showing a menu
 120 // ----------------------------------------------------------------------------
 121
 122 class wxPopupMenuWindow : public wxPopupTransientWindow
 123 {
 124 public:
 125     wxPopupMenuWindow(wxWindow *parent, wxMenu *menu);
 126
 127     ~wxPopupMenuWindow();
 128
 129     // override the base class version to select the first item initially
 130     virtual void Popup(wxWindow *focus = NULL);
 131
 132     // override the base class version to dismiss any open submenus
 133     virtual void Dismiss();
 134
 135     // notify the menu when the window disappears from screen
 136     virtual void OnDismiss();
 137
 138     // called when a submenu is dismissed
 139     void OnSubmenuDismiss() { m_hasOpenSubMenu = false; }
 140
 141     // get the currently selected item (may be NULL)
 142     wxMenuItem *GetCurrentItem() const
 143     {
 144         return m_nodeCurrent ? m_nodeCurrent->GetData() : NULL;
 145     }
 146
 147     // find the menu item at given position
 148     wxMenuItemList::compatibility_iterator GetMenuItemFromPoint(const wxPoint& pt) const;
 149
 150     // refresh the given item
 151     void RefreshItem(wxMenuItem *item);
 152
 153     // preselect the first item
 154     void SelectFirst() { SetCurrent(m_menu->GetMenuItems().GetFirst()); }
 155
 156     // process the key event, return true if done
 157     bool ProcessKeyDown(int key);
 158
 159     // process mouse move event
 160     void ProcessMouseMove(const wxPoint& pt);
 161
 162     // don't dismiss the popup window if the parent menu was clicked
 163     virtual bool ProcessLeftDown(wxMouseEvent& event);
 164
 165 protected:
 166     // how did we perform this operation?
 167     enum InputMethod
 168     {
 169         WithKeyboard,
 170         WithMouse
 171     };
 172
 173     // draw the menu inside this window
 174     virtual void DoDraw(wxControlRenderer *renderer);
 175
 176     // event handlers
 177     void OnLeftUp(wxMouseEvent& event);
 178     void OnMouseMove(wxMouseEvent& event);
 179     void OnMouseLeave(wxMouseEvent& event);
 180     void OnKeyDown(wxKeyEvent& event);
 181
 182     // reset the current item and node
 183     void ResetCurrent();
 184
 185     // set the current node and item withotu refreshing anything
 186     void SetCurrent(wxMenuItemList::compatibility_iterator node);
 187     virtual bool SetCurrent(bool doit = true){return wxPopupTransientWindow::SetCurrent(doit);};
 188
 189     // change the current item refreshing the old and new items
 190     void ChangeCurrent(wxMenuItemList::compatibility_iterator node);
 191
 192     // activate item, i.e. call either ClickItem() or OpenSubmenu() depending
 193     // on what it is, return true if something was done (i.e. it's not a
 194     // separator...)
 195     bool ActivateItem(wxMenuItem *item, InputMethod how = WithKeyboard);
 196
 197     // send the event about the item click
 198     void ClickItem(wxMenuItem *item);
 199
 200     // show the submenu for this item
 201     void OpenSubmenu(wxMenuItem *item, InputMethod how = WithKeyboard);
 202
 203     // can this tiem be opened?
 204     bool CanOpen(wxMenuItem *item)
 205     {
 206         return item && item->IsEnabled() && item->IsSubMenu();
 207     }
 208
 209     // dismiss the menu and all parent menus too
 210     void DismissAndNotify();
 211
 212     // react to dimissing this menu and also dismiss the parent if
 213     // dismissParent
 214     void HandleDismiss(bool dismissParent);
 215
 216     // do we have an open submenu?
 217     bool HasOpenSubmenu() const { return m_hasOpenSubMenu; }
 218
 219     // get previous node after the current one
 220     wxMenuItemList::compatibility_iterator GetPrevNode() const;
 221
 222     // get previous node before the given one, wrapping if it's the first one
 223     wxMenuItemList::compatibility_iterator GetPrevNode(wxMenuItemList::compatibility_iterator node) const;
 224
 225     // get next node after the current one
 226     wxMenuItemList::compatibility_iterator GetNextNode() const;
 227
 228     // get next node after the given one, wrapping if it's the last one
 229     wxMenuItemList::compatibility_iterator GetNextNode(wxMenuItemList::compatibility_iterator node) const;
 230
 231 private:
 232     // the menu we show
 233     wxMenu *m_menu;
 234
 235     // the menu node corresponding to the current item
 236     wxMenuItemList::compatibility_iterator m_nodeCurrent;
 237
 238     // do we currently have an opened submenu?
 239     bool m_hasOpenSubMenu;
 240
 241     DECLARE_EVENT_TABLE()
 242 };
 243
 244 // ----------------------------------------------------------------------------
 245 // wxMenuKbdRedirector: an event handler which redirects kbd input to wxMenu
 246 // ----------------------------------------------------------------------------
 247
 248 class wxMenuKbdRedirector : public wxEvtHandler
 249 {
 250 public:
 251     wxMenuKbdRedirector(wxMenu *menu) { m_menu = menu; }
 252
 253     virtual bool ProcessEvent(wxEvent& event)
 254     {
 255         if ( event.GetEventType() == wxEVT_KEY_DOWN )
 256         {
 257             return m_menu->ProcessKeyDown(((wxKeyEvent &)event).GetKeyCode());
 258         }
 259         else
 260         {
 261             // return false;
 262
 263             return wxEvtHandler::ProcessEvent(event);
 264         }
 265     }
 266
 267 private:
 268     wxMenu *m_menu;
 269 };
 270
 271 // ----------------------------------------------------------------------------
 272 // wxWin macros
 273 // ----------------------------------------------------------------------------
 274
 275 IMPLEMENT_DYNAMIC_CLASS(wxMenu, wxEvtHandler)
 276 IMPLEMENT_DYNAMIC_CLASS(wxMenuBar, wxWindow)
 277 IMPLEMENT_DYNAMIC_CLASS(wxMenuItem, wxObject)
 278
 279 BEGIN_EVENT_TABLE(wxPopupMenuWindow, wxPopupTransientWindow)
 280     EVT_KEY_DOWN(wxPopupMenuWindow::OnKeyDown)
 281
 282     EVT_LEFT_UP(wxPopupMenuWindow::OnLeftUp)
 283     EVT_MOTION(wxPopupMenuWindow::OnMouseMove)
 284     EVT_LEAVE_WINDOW(wxPopupMenuWindow::OnMouseLeave)
 285 END_EVENT_TABLE()
 286
 287 BEGIN_EVENT_TABLE(wxMenuBar, wxMenuBarBase)
 288     EVT_KILL_FOCUS(wxMenuBar::OnKillFocus)
 289
 290     EVT_KEY_DOWN(wxMenuBar::OnKeyDown)
 291
 292     EVT_LEFT_DOWN(wxMenuBar::OnLeftDown)
 293     EVT_MOTION(wxMenuBar::OnMouseMove)
 294 END_EVENT_TABLE()
 295
 296 // ============================================================================
 297 // implementation
 298 // ============================================================================
 299
 300 // ----------------------------------------------------------------------------
 301 // wxPopupMenuWindow
 302 // ----------------------------------------------------------------------------
 303
 304 wxPopupMenuWindow::wxPopupMenuWindow(wxWindow *parent, wxMenu *menu)
 305 {
 306     m_menu = menu;
 307     m_hasOpenSubMenu = false;
 308
 309     ResetCurrent();
 310
 311     (void)Create(parent, wxBORDER_RAISED);
 312
 313     SetCursor(wxCURSOR_ARROW);
 314 }
 315
 316 wxPopupMenuWindow::~wxPopupMenuWindow()
 317 {
 318     // When m_popupMenu in wxMenu is deleted because it
 319     // is a child of an old menu bar being deleted (note: it does
 320     // not get destroyed by the wxMenu destructor, but
 321     // by DestroyChildren()), m_popupMenu should be reset to NULL.
 322
 323     m_menu->m_popupMenu = NULL;
 324 }
 325
 326 // ----------------------------------------------------------------------------
 327 // wxPopupMenuWindow current item/node handling
 328 // ----------------------------------------------------------------------------
 329
 330 void wxPopupMenuWindow::ResetCurrent()
 331 {
 332 #if wxUSE_STL
 333     SetCurrent(wxMenuItemList::compatibility_iterator());
 334 #else
 335     SetCurrent((wxwxMenuItemListNode *)NULL);
 336 #endif
 337 }
 338
 339 void wxPopupMenuWindow::SetCurrent(wxMenuItemList::compatibility_iterator node)
 340 {
 341     m_nodeCurrent = node;
 342 }
 343
 344 void wxPopupMenuWindow::ChangeCurrent(wxMenuItemList::compatibility_iterator node)
 345 {
 346     if ( node != m_nodeCurrent )
 347     {
 348         wxMenuItemList::compatibility_iterator nodeOldCurrent = m_nodeCurrent;
 349
 350         m_nodeCurrent = node;
 351
 352         if ( nodeOldCurrent )
 353         {
 354             wxMenuItem *item = nodeOldCurrent->GetData();
 355             wxCHECK_RET( item, _T("no current item?") );
 356
 357             // if it was the currently opened menu, close it
 358             if ( item->IsSubMenu() && item->GetSubMenu()->IsShown() )
 359             {
 360                 item->GetSubMenu()->Dismiss();
 361                 OnSubmenuDismiss();
 362             }
 363
 364             RefreshItem(item);
 365         }
 366
 367         if ( m_nodeCurrent )
 368             RefreshItem(m_nodeCurrent->GetData());
 369     }
 370 }
 371
 372 wxMenuItemList::compatibility_iterator wxPopupMenuWindow::GetPrevNode() const
 373 {
 374     // return the last node if there had been no previously selected one
 375     return m_nodeCurrent ? GetPrevNode(m_nodeCurrent)
 376                          : m_menu->GetMenuItems().GetLast();
 377 }
 378
 379 wxMenuItemList::compatibility_iterator
 380 wxPopupMenuWindow::GetPrevNode(wxMenuItemList::compatibility_iterator node) const
 381 {
 382     if ( node )
 383     {
 384         node = node->GetPrevious();
 385         if ( !node )
 386         {
 387             node = m_menu->GetMenuItems().GetLast();
 388         }
 389     }
 390     //else: the menu is empty
 391
 392     return node;
 393 }
 394
 395 wxMenuItemList::compatibility_iterator wxPopupMenuWindow::GetNextNode() const
 396 {
 397     // return the first node if there had been no previously selected one
 398     return m_nodeCurrent ? GetNextNode(m_nodeCurrent)
 399                          : m_menu->GetMenuItems().GetFirst();
 400 }
 401
 402 wxMenuItemList::compatibility_iterator
 403 wxPopupMenuWindow::GetNextNode(wxMenuItemList::compatibility_iterator node) const
 404 {
 405     if ( node )
 406     {
 407         node = node->GetNext();
 408         if ( !node )
 409         {
 410             node = m_menu->GetMenuItems().GetFirst();
 411         }
 412     }
 413     //else: the menu is empty
 414
 415     return node;
 416 }
 417
 418 // ----------------------------------------------------------------------------
 419 // wxPopupMenuWindow popup/dismiss
 420 // ----------------------------------------------------------------------------
 421
 422 void wxPopupMenuWindow::Popup(wxWindow *focus)
 423 {
 424     // check that the current item had been properly reset before
 425     wxASSERT_MSG( !m_nodeCurrent ||
 426                   m_nodeCurrent == m_menu->GetMenuItems().GetFirst(),
 427                   _T("menu current item preselected incorrectly") );
 428
 429     wxPopupTransientWindow::Popup(focus);
 430
 431 #ifdef __WXMSW__
 432     // ensure that this window is really on top of everything: without using
 433     // SetWindowPos() it can be covered by its parent menu which is not
 434     // really what we want
 435     wxMenu *menuParent = m_menu->GetParent();
 436     if ( menuParent )
 437     {
 438         wxPopupMenuWindow *win = menuParent->m_popupMenu;
 439
 440         // if we're shown, the parent menu must be also shown
 441         wxCHECK_RET( win, _T("parent menu is not shown?") );
 442
 443         if ( !::SetWindowPos(GetHwndOf(win), GetHwnd(),
 444                              0, 0, 0, 0,
 445                              SWP_NOMOVE | SWP_NOSIZE | SWP_NOREDRAW) )
 446         {
 447             wxLogLastError(_T("SetWindowPos(HWND_TOP)"));
 448         }
 449
 450         Refresh();
 451     }
 452 #endif // __WXMSW__
 453 }
 454
 455 void wxPopupMenuWindow::Dismiss()
 456 {
 457     if ( HasOpenSubmenu() )
 458     {
 459         wxMenuItem *item = GetCurrentItem();
 460         wxCHECK_RET( item && item->IsSubMenu(), _T("where is our open submenu?") );
 461
 462         wxPopupMenuWindow *win = item->GetSubMenu()->m_popupMenu;
 463         wxCHECK_RET( win, _T("opened submenu is not opened?") );
 464
 465         win->Dismiss();
 466         OnSubmenuDismiss();
 467     }
 468
 469     wxPopupTransientWindow::Dismiss();
 470 }
 471
 472 void wxPopupMenuWindow::OnDismiss()
 473 {
 474     // when we are dismissed because the user clicked elsewhere or we lost
 475     // focus in any other way, hide the parent menu as well
 476     HandleDismiss(true);
 477 }
 478
 479 void wxPopupMenuWindow::HandleDismiss(bool dismissParent)
 480 {
 481     ResetCurrent();
 482
 483     m_menu->OnDismiss(dismissParent);
 484 }
 485
 486 void wxPopupMenuWindow::DismissAndNotify()
 487 {
 488     Dismiss();
 489     HandleDismiss(true);
 490 }
 491
 492 // ----------------------------------------------------------------------------
 493 // wxPopupMenuWindow geometry
 494 // ----------------------------------------------------------------------------
 495
 496 wxMenuItemList::compatibility_iterator
 497 wxPopupMenuWindow::GetMenuItemFromPoint(const wxPoint& pt) const
 498 {
 499     // we only use the y coord normally, but still check x in case the point is
 500     // outside the window completely
 501     if ( wxWindow::HitTest(pt) == wxHT_WINDOW_INSIDE )
 502     {
 503         wxCoord y = 0;
 504         for ( wxMenuItemList::compatibility_iterator node = m_menu->GetMenuItems().GetFirst();
 505               node;
 506               node = node->GetNext() )
 507         {
 508             wxMenuItem *item = node->GetData();
 509             y += item->GetHeight();
 510             if ( y > pt.y )
 511             {
 512                 // found
 513                 return node;
 514             }
 515         }
 516     }
 517
 518 #if wxUSE_STL
 519     return wxMenuItemList::compatibility_iterator();
 520 #else
 521     return NULL;
 522 #endif
 523 }
 524
 525 // ----------------------------------------------------------------------------
 526 // wxPopupMenuWindow drawing
 527 // ----------------------------------------------------------------------------
 528
 529 void wxPopupMenuWindow::RefreshItem(wxMenuItem *item)
 530 {
 531     wxCHECK_RET( item, _T("can't refresh NULL item") );
 532
 533     wxASSERT_MSG( IsShown(), _T("can't refresh menu which is not shown") );
 534
 535     // FIXME: -1 here because of SetLogicalOrigin(1, 1) in DoDraw()
 536     RefreshRect(wxRect(0, item->GetPosition() - 1,
 537                 m_menu->GetGeometryInfo().GetSize().x, item->GetHeight()));
 538 }
 539
 540 void wxPopupMenuWindow::DoDraw(wxControlRenderer *renderer)
 541 {
 542     // no clipping so far - do we need it? I don't think so as the menu is
 543     // never partially covered as it is always on top of everything
 544
 545     wxDC& dc = renderer->GetDC();
 546     dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
 547
 548     // FIXME: this should be done in the renderer, however when it is fixed
 549     //        wxPopupMenuWindow::RefreshItem() should be changed too!
 550     dc.SetLogicalOrigin(1, 1);
 551
 552     wxRenderer *rend = renderer->GetRenderer();
 553
 554     wxCoord y = 0;
 555     const wxMenuGeometryInfo& gi = m_menu->GetGeometryInfo();
 556     for ( wxMenuItemList::compatibility_iterator node = m_menu->GetMenuItems().GetFirst();
 557           node;
 558           node = node->GetNext() )
 559     {
 560         wxMenuItem *item = node->GetData();
 561
 562         if ( item->IsSeparator() )
 563         {
 564             rend->DrawMenuSeparator(dc, y, gi);
 565         }
 566         else // not a separator
 567         {
 568             int flags = 0;
 569             if ( item->IsCheckable() )
 570             {
 571                 flags |= wxCONTROL_CHECKABLE;
 572
 573                 if ( item->IsChecked() )
 574                 {
 575                     flags |= wxCONTROL_CHECKED;
 576                 }
 577             }
 578
 579             if ( !item->IsEnabled() )
 580                 flags |= wxCONTROL_DISABLED;
 581
 582             if ( item->IsSubMenu() )
 583                 flags |= wxCONTROL_ISSUBMENU;
 584
 585             if ( item == GetCurrentItem() )
 586                 flags |= wxCONTROL_SELECTED;
 587
 588             wxBitmap bmp;
 589
 590             if ( !item->IsEnabled() )
 591             {
 592                 bmp = item->GetDisabledBitmap();
 593             }
 594
 595             if ( !bmp.Ok() )
 596             {
 597                 // strangely enough, for unchecked item we use the
 598                 // "checked" bitmap because this is the default one - this
 599                 // explains this strange boolean expression
 600                 bmp = item->GetBitmap(!item->IsCheckable() || item->IsChecked());
 601             }
 602
 603             rend->DrawMenuItem
 604                   (
 605                      dc,
 606                      y,
 607                      gi,
 608                      item->GetLabel(),
 609                      item->GetAccelString(),
 610                      bmp,
 611                      flags,
 612                      item->GetAccelIndex()
 613                   );
 614         }
 615
 616         y += item->GetHeight();
 617     }
 618 }
 619
 620 // ----------------------------------------------------------------------------
 621 // wxPopupMenuWindow actions
 622 // ----------------------------------------------------------------------------
 623
 624 void wxPopupMenuWindow::ClickItem(wxMenuItem *item)
 625 {
 626     wxCHECK_RET( item, _T("can't click NULL item") );
 627
 628     wxASSERT_MSG( !item->IsSeparator() && !item->IsSubMenu(),
 629                   _T("can't click this item") );
 630
 631     wxMenu* menu = m_menu;
 632
 633     // close all menus
 634     DismissAndNotify();
 635
 636     menu->ClickItem(item);
 637 }
 638
 639 void wxPopupMenuWindow::OpenSubmenu(wxMenuItem *item, InputMethod how)
 640 {
 641     wxCHECK_RET( item, _T("can't open NULL submenu") );
 642
 643     wxMenu *submenu = item->GetSubMenu();
 644     wxCHECK_RET( submenu, _T("can only open submenus!") );
 645
 646     // FIXME: should take into account the border width
 647     submenu->Popup(ClientToScreen(wxPoint(0, item->GetPosition())),
 648                    wxSize(m_menu->GetGeometryInfo().GetSize().x, 0),
 649                    how == WithKeyboard /* preselect first item then */);
 650
 651     m_hasOpenSubMenu = true;
 652 }
 653
 654 bool wxPopupMenuWindow::ActivateItem(wxMenuItem *item, InputMethod how)
 655 {
 656     // don't activate disabled items
 657     if ( !item || !item->IsEnabled() )
 658     {
 659         return false;
 660     }
 661
 662     // normal menu items generate commands, submenus can be opened and
 663     // the separators don't do anything
 664     if ( item->IsSubMenu() )
 665     {
 666         OpenSubmenu(item, how);
 667     }
 668     else if ( !item->IsSeparator() )
 669     {
 670         ClickItem(item);
 671     }
 672     else // separator, can't activate
 673     {
 674         return false;
 675     }
 676
 677     return true;
 678 }
 679
 680 // ----------------------------------------------------------------------------
 681 // wxPopupMenuWindow input handling
 682 // ----------------------------------------------------------------------------
 683
 684 bool wxPopupMenuWindow::ProcessLeftDown(wxMouseEvent& event)
 685 {
 686     // wxPopupWindowHandler dismisses the window when the mouse is clicked
 687     // outside it which is usually just fine, but there is one case when we
 688     // don't want to do it: if the mouse was clicked on the parent submenu item
 689     // which opens this menu, so check for it
 690
 691     wxPoint pos = event.GetPosition();
 692     if ( HitTest(pos.x, pos.y) == wxHT_WINDOW_OUTSIDE )
 693     {
 694         wxMenu *menu = m_menu->GetParent();
 695         if ( menu )
 696         {
 697             wxPopupMenuWindow *win = menu->m_popupMenu;
 698
 699             wxCHECK_MSG( win, false, _T("parent menu not shown?") );
 700
 701             pos = ClientToScreen(pos);
 702             if ( win->GetMenuItemFromPoint(win->ScreenToClient(pos)) )
 703             {
 704                 // eat the event
 705                 return true;
 706             }
 707             //else: it is outside the parent menu as well, do dismiss this one
 708         }
 709     }
 710
 711     return false;
 712 }
 713
 714 void wxPopupMenuWindow::OnLeftUp(wxMouseEvent& event)
 715 {
 716     wxMenuItemList::compatibility_iterator node = GetMenuItemFromPoint(event.GetPosition());
 717     if ( node )
 718     {
 719         ActivateItem(node->GetData(), WithMouse);
 720     }
 721 }
 722
 723 void wxPopupMenuWindow::OnMouseMove(wxMouseEvent& event)
 724 {
 725     const wxPoint pt = event.GetPosition();
 726
 727     // we need to ignore extra mouse events: example when this happens is when
 728     // the mouse is on the menu and we open a submenu from keyboard - Windows
 729     // then sends us a dummy mouse move event, we (correctly) determine that it
 730     // happens in the parent menu and so immediately close the just opened
 731     // submenu!
 732 #ifdef __WXMSW__
 733     static wxPoint s_ptLast;
 734     wxPoint ptCur = ClientToScreen(pt);
 735     if ( ptCur == s_ptLast )
 736     {
 737         return;
 738     }
 739
 740     s_ptLast = ptCur;
 741 #endif // __WXMSW__
 742
 743     ProcessMouseMove(pt);
 744
 745     event.Skip();
 746 }
 747
 748 void wxPopupMenuWindow::ProcessMouseMove(const wxPoint& pt)
 749 {
 750     wxMenuItemList::compatibility_iterator node = GetMenuItemFromPoint(pt);
 751
 752     // don't reset current to NULL here, we only do it when the mouse leaves
 753     // the window (see below)
 754     if ( node )
 755     {
 756         if ( node != m_nodeCurrent )
 757         {
 758             ChangeCurrent(node);
 759
 760             wxMenuItem *item = GetCurrentItem();
 761             if ( CanOpen(item) )
 762             {
 763                 OpenSubmenu(item, WithMouse);
 764             }
 765         }
 766         //else: same item, nothing to do
 767     }
 768     else // not on an item
 769     {
 770         // the last open submenu forwards the mouse move messages to its
 771         // parent, so if the mouse moves to another item of the parent menu,
 772         // this menu is closed and this other item is selected - in the similar
 773         // manner, the top menu forwards the mouse moves to the menubar which
 774         // allows to select another top level menu by just moving the mouse
 775
 776         // we need to translate our client coords to the client coords of the
 777         // window we forward this event to
 778         wxPoint ptScreen = ClientToScreen(pt);
 779
 780         // if the mouse is outside this menu, let the parent one to
 781         // process it
 782         wxMenu *menuParent = m_menu->GetParent();
 783         if ( menuParent )
 784         {
 785             wxPopupMenuWindow *win = menuParent->m_popupMenu;
 786
 787             // if we're shown, the parent menu must be also shown
 788             wxCHECK_RET( win, _T("parent menu is not shown?") );
 789
 790             win->ProcessMouseMove(win->ScreenToClient(ptScreen));
 791         }
 792         else // no parent menu
 793         {
 794             wxMenuBar *menubar = m_menu->GetMenuBar();
 795             if ( menubar )
 796             {
 797                 if ( menubar->ProcessMouseEvent(
 798                             menubar->ScreenToClient(ptScreen)) )
 799                 {
 800                     // menubar has closed this menu and opened another one, probably
 801                     return;
 802                 }
 803             }
 804         }
 805         //else: top level popup menu, no other processing to do
 806     }
 807 }
 808
 809 void wxPopupMenuWindow::OnMouseLeave(wxMouseEvent& event)
 810 {
 811     // due to the artefact of mouse events generation under MSW, we actually
 812     // may get the mouse leave event after the menu had been already dismissed
 813     // and calling ChangeCurrent() would then assert, so don't do it
 814     if ( IsShown() )
 815     {
 816         // we shouldn't change the current them if our submenu is opened and
 817         // mouse moved there, in this case the submenu is responsable for
 818         // handling it
 819         bool resetCurrent;
 820         if ( HasOpenSubmenu() )
 821         {
 822             wxMenuItem *item = GetCurrentItem();
 823             wxCHECK_RET( CanOpen(item), _T("where is our open submenu?") );
 824
 825             wxPopupMenuWindow *win = item->GetSubMenu()->m_popupMenu;
 826             wxCHECK_RET( win, _T("submenu is opened but not shown?") );
 827
 828             // only handle this event if the mouse is not inside the submenu
 829             wxPoint pt = ClientToScreen(event.GetPosition());
 830             resetCurrent =
 831                 win->HitTest(win->ScreenToClient(pt)) == wxHT_WINDOW_OUTSIDE;
 832         }
 833         else
 834         {
 835             // this menu is the last opened
 836             resetCurrent = true;
 837         }
 838
 839         if ( resetCurrent )
 840         {
 841 #if wxUSE_STL
 842             ChangeCurrent(wxMenuItemList::compatibility_iterator());
 843 #else
 844             ChangeCurrent(NULL);
 845 #endif
 846         }
 847     }
 848
 849     event.Skip();
 850 }
 851
 852 void wxPopupMenuWindow::OnKeyDown(wxKeyEvent& event)
 853 {
 854     if ( !ProcessKeyDown(event.GetKeyCode()) )
 855     {
 856         event.Skip();
 857     }
 858 }
 859
 860 bool wxPopupMenuWindow::ProcessKeyDown(int key)
 861 {
 862     wxMenuItem *item = GetCurrentItem();
 863
 864     // first let the opened submenu to have it (no test for IsEnabled() here,
 865     // the keys navigate even in a disabled submenu if we had somehow managed
 866     // to open it inspit of this)
 867     if ( HasOpenSubmenu() )
 868     {
 869         wxCHECK_MSG( CanOpen(item), false,
 870                      _T("has open submenu but another item selected?") );
 871
 872         if ( item->GetSubMenu()->ProcessKeyDown(key) )
 873             return true;
 874     }
 875
 876     bool processed = true;
 877
 878     // handle the up/down arrows, home, end, esc and return here, pass the
 879     // left/right arrows to the menu bar except when the right arrow can be
 880     // used to open a submenu
 881     switch ( key )
 882     {
 883         case WXK_LEFT:
 884             // if we're not a top level menu, close us, else leave this to the
 885             // menubar
 886             if ( !m_menu->GetParent() )
 887             {
 888                 processed = false;
 889                 break;
 890             }
 891
 892             // fall through
 893
 894         case WXK_ESCAPE:
 895             // close just this menu
 896             Dismiss();
 897             HandleDismiss(false);
 898             break;
 899
 900         case WXK_RETURN:
 901             processed = ActivateItem(item);
 902             break;
 903
 904         case WXK_HOME:
 905             ChangeCurrent(m_menu->GetMenuItems().GetFirst());
 906             break;
 907
 908         case WXK_END:
 909             ChangeCurrent(m_menu->GetMenuItems().GetLast());
 910             break;
 911
 912         case WXK_UP:
 913         case WXK_DOWN:
 914             {
 915                 bool up = key == WXK_UP;
 916
 917                 wxMenuItemList::compatibility_iterator nodeStart = up ? GetPrevNode()
 918                                                      : GetNextNode(),
 919                                      node = nodeStart;
 920                 while ( node && node->GetData()->IsSeparator() )
 921                 {
 922                     node = up ? GetPrevNode(node) : GetNextNode(node);
 923
 924                     if ( node == nodeStart )
 925                     {
 926                         // nothing but separators and disabled items in this
 927                         // menu, break out
 928 #if wxUSE_STL
 929                         node = wxMenuItemList::compatibility_iterator();
 930 #else
 931                         node = NULL;
 932 #endif
 933                     }
 934                 }
 935
 936                 if ( node )
 937                 {
 938                     ChangeCurrent(node);
 939                 }
 940                 else
 941                 {
 942                     processed = false;
 943                 }
 944             }
 945             break;
 946
 947         case WXK_RIGHT:
 948             // don't try to reopen an already opened menu
 949             if ( !HasOpenSubmenu() && CanOpen(item) )
 950             {
 951                 OpenSubmenu(item);
 952             }
 953             else
 954             {
 955                 processed = false;
 956             }
 957             break;
 958
 959         default:
 960             // look for the menu item starting with this letter
 961             if ( wxIsalnum(key) )
 962             {
 963                 // we want to start from the item after this one because
 964                 // if we're already on the item with the given accel we want to
 965                 // go to the next one, not to stay in place
 966                 wxMenuItemList::compatibility_iterator nodeStart = GetNextNode();
 967
 968                 // do we have more than one item with this accel?
 969                 bool notUnique = false;
 970
 971                 // translate everything to lower case before comparing
 972                 wxChar chAccel = wxTolower(key);
 973
 974                 // loop through all items searching for the item with this
 975                 // accel
 976                 wxMenuItemList::compatibility_iterator node = nodeStart,
 977 #if wxUSE_STL
 978                                                        nodeFound = wxMenuItemList::compatibility_iterator();
 979 #else
 980                                                        nodeFound = NULL;
 981 #endif
 982                 for ( ;; )
 983                 {
 984                     item = node->GetData();
 985
 986                     int idxAccel = item->GetAccelIndex();
 987                     if ( idxAccel != -1 &&
 988                          wxTolower(item->GetLabel()[(size_t)idxAccel])
 989                             == chAccel )
 990                     {
 991                         // ok, found an item with this accel
 992                         if ( !nodeFound )
 993                         {
 994                             // store it but continue searching as we need to
 995                             // know if it's the only item with this accel or if
 996                             // there are more
 997                             nodeFound = node;
 998                         }
 999                         else // we already had found such item
1000                         {
1001                             notUnique = true;
1002
1003                             // no need to continue further, we won't find
1004                             // anything we don't already know
1005                             break;
1006                         }
1007                     }
1008
1009                     // we want to iterate over all items wrapping around if
1010                     // necessary
1011                     node = GetNextNode(node);
1012                     if ( node == nodeStart )
1013                     {
1014                         // we've seen all nodes
1015                         break;
1016                     }
1017                 }
1018
1019                 if ( nodeFound )
1020                 {
1021                     item = nodeFound->GetData();
1022
1023                     // go to this item anyhow
1024                     ChangeCurrent(nodeFound);
1025
1026                     if ( !notUnique && item->IsEnabled() )
1027                     {
1028                         // unique item with this accel - activate it
1029                         processed = ActivateItem(item);
1030                     }
1031                     //else: just select it but don't activate as the user might
1032                     //      have wanted to activate another item
1033
1034                     // skip "processed = false" below
1035                     break;
1036                 }
1037             }
1038
1039             processed = false;
1040     }
1041
1042     return processed;
1043 }
1044
1045 // ----------------------------------------------------------------------------
1046 // wxMenu
1047 // ----------------------------------------------------------------------------
1048
1049 void wxMenu::Init()
1050 {
1051     m_geometry = NULL;
1052
1053     m_popupMenu = NULL;
1054
1055     m_startRadioGroup = -1;
1056 }
1057
1058 wxMenu::~wxMenu()
1059 {
1060     delete m_geometry;
1061     delete m_popupMenu;
1062 }
1063
1064 // ----------------------------------------------------------------------------
1065 // wxMenu and wxMenuGeometryInfo
1066 // ----------------------------------------------------------------------------
1067
1068 wxMenuGeometryInfo::~wxMenuGeometryInfo()
1069 {
1070 }
1071
1072 const wxMenuGeometryInfo& wxMenu::GetGeometryInfo() const
1073 {
1074     if ( !m_geometry )
1075     {
1076         if ( m_popupMenu )
1077         {
1078             wxConstCast(this, wxMenu)->m_geometry =
1079                 m_popupMenu->GetRenderer()->GetMenuGeometry(m_popupMenu, *this);
1080         }
1081         else
1082         {
1083             wxFAIL_MSG( _T("can't get geometry without window") );
1084         }
1085     }
1086
1087     return *m_geometry;
1088 }
1089
1090 void wxMenu::InvalidateGeometryInfo()
1091 {
1092     if ( m_geometry )
1093     {
1094         delete m_geometry;
1095         m_geometry = NULL;
1096     }
1097 }
1098
1099 // ----------------------------------------------------------------------------
1100 // wxMenu adding/removing items
1101 // ----------------------------------------------------------------------------
1102
1103 void wxMenu::OnItemAdded(wxMenuItem *item)
1104 {
1105     InvalidateGeometryInfo();
1106
1107 #if wxUSE_ACCEL
1108     AddAccelFor(item);
1109 #endif // wxUSE_ACCEL
1110
1111     // the submenus of a popup menu should have the same invoking window as it
1112     // has
1113     if ( m_invokingWindow && item->IsSubMenu() )
1114     {
1115         item->GetSubMenu()->SetInvokingWindow(m_invokingWindow);
1116     }
1117 }
1118
1119 void wxMenu::EndRadioGroup()
1120 {
1121     // we're not inside a radio group any longer
1122     m_startRadioGroup = -1;
1123 }
1124
1125 wxMenuItem* wxMenu::DoAppend(wxMenuItem *item)
1126 {
1127     if ( item->GetKind() == wxITEM_RADIO )
1128     {
1129         int count = GetMenuItemCount();
1130
1131         if ( m_startRadioGroup == -1 )
1132         {
1133             // start a new radio group
1134             m_startRadioGroup = count;
1135
1136             // for now it has just one element
1137             item->SetAsRadioGroupStart();
1138             item->SetRadioGroupEnd(m_startRadioGroup);
1139         }
1140         else // extend the current radio group
1141         {
1142             // we need to update its end item
1143             item->SetRadioGroupStart(m_startRadioGroup);
1144             wxMenuItemList::compatibility_iterator node = GetMenuItems().Item(m_startRadioGroup);
1145
1146             if ( node )
1147             {
1148                 node->GetData()->SetRadioGroupEnd(count);
1149             }
1150             else
1151             {
1152                 wxFAIL_MSG( _T("where is the radio group start item?") );
1153             }
1154         }
1155     }
1156     else // not a radio item
1157     {
1158         EndRadioGroup();
1159     }
1160
1161     if ( !wxMenuBase::DoAppend(item) )
1162         return NULL;
1163
1164     OnItemAdded(item);
1165
1166     return item;
1167 }
1168
1169 wxMenuItem* wxMenu::DoInsert(size_t pos, wxMenuItem *item)
1170 {
1171     if ( !wxMenuBase::DoInsert(pos, item) )
1172         return NULL;
1173
1174     OnItemAdded(item);
1175
1176     return item;
1177 }
1178
1179 wxMenuItem *wxMenu::DoRemove(wxMenuItem *item)
1180 {
1181     wxMenuItem *itemOld = wxMenuBase::DoRemove(item);
1182
1183     if ( itemOld )
1184     {
1185         InvalidateGeometryInfo();
1186
1187 #if wxUSE_ACCEL
1188         RemoveAccelFor(item);
1189 #endif // wxUSE_ACCEL
1190     }
1191
1192     return itemOld;
1193 }
1194
1195 // ----------------------------------------------------------------------------
1196 // wxMenu attaching/detaching
1197 // ----------------------------------------------------------------------------
1198
1199 void wxMenu::Attach(wxMenuBarBase *menubar)
1200 {
1201     wxMenuBase::Attach(menubar);
1202
1203     wxCHECK_RET( m_menuBar, _T("menubar can't be NULL after attaching") );
1204
1205     // unfortunately, we can't use m_menuBar->GetEventHandler() here because,
1206     // if the menubar is currently showing a menu, its event handler is a
1207     // temporary one installed by wxPopupWindow and so will disappear soon any
1208     // any attempts to use it from the newly attached menu would result in a
1209     // crash
1210     //
1211     // so we use the menubar itself, even if it's a pity as it means we can't
1212     // redirect all menu events by changing the menubar handler (FIXME)
1213     SetNextHandler(m_menuBar);
1214 }
1215
1216 void wxMenu::Detach()
1217 {
1218     wxMenuBase::Detach();
1219 }
1220
1221 // ----------------------------------------------------------------------------
1222 // wxMenu misc functions
1223 // ----------------------------------------------------------------------------
1224
1225 wxWindow *wxMenu::GetRootWindow() const
1226 {
1227     if ( GetMenuBar() )
1228     {
1229         // simple case - a normal menu attached to the menubar
1230         return GetMenuBar();
1231     }
1232
1233     // we're a popup menu but the trouble is that only the top level popup menu
1234     // has a pointer to the invoking window, so we must walk up the menu chain
1235     // if needed
1236     wxWindow *win = GetInvokingWindow();
1237     if ( win )
1238     {
1239         // we already have it
1240         return win;
1241     }
1242
1243     wxMenu *menu = GetParent();
1244     while ( menu )
1245     {
1246         // We are a submenu of a menu of a menubar
1247         if (menu->GetMenuBar())
1248            return menu->GetMenuBar();
1249
1250         win = menu->GetInvokingWindow();
1251         if ( win )
1252             break;
1253
1254         menu = menu->GetParent();
1255     }
1256
1257     // we're probably going to crash in the caller anyhow, but try to detect
1258     // this error as soon as possible
1259     wxASSERT_MSG( win, _T("menu without any associated window?") );
1260
1261     // also remember it in this menu so that we don't have to search for it the
1262     // next time
1263     wxConstCast(this, wxMenu)->m_invokingWindow = win;
1264
1265     return win;
1266 }
1267
1268 wxRenderer *wxMenu::GetRenderer() const
1269 {
1270     // we're going to crash without renderer!
1271     wxCHECK_MSG( m_popupMenu, NULL, _T("neither popup nor menubar menu?") );
1272
1273     return m_popupMenu->GetRenderer();
1274 }
1275
1276 void wxMenu::RefreshItem(wxMenuItem *item)
1277 {
1278     // the item geometry changed, so our might have changed as well
1279     InvalidateGeometryInfo();
1280
1281     if ( IsShown() )
1282     {
1283         // this would be a bug in IsShown()
1284         wxCHECK_RET( m_popupMenu, _T("must have popup window if shown!") );
1285
1286         // recalc geometry to update the item height and such
1287         (void)GetGeometryInfo();
1288
1289         m_popupMenu->RefreshItem(item);
1290     }
1291 }
1292
1293 // ----------------------------------------------------------------------------
1294 // wxMenu showing and hiding
1295 // ----------------------------------------------------------------------------
1296
1297 bool wxMenu::IsShown() const
1298 {
1299     return m_popupMenu && m_popupMenu->IsShown();
1300 }
1301
1302 void wxMenu::OnDismiss(bool dismissParent)
1303 {
1304     if ( m_menuParent )
1305     {
1306         // always notify the parent about submenu disappearance
1307         wxPopupMenuWindow *win = m_menuParent->m_popupMenu;
1308         if ( win )
1309         {
1310             win->OnSubmenuDismiss();
1311         }
1312         else
1313         {
1314             wxFAIL_MSG( _T("parent menu not shown?") );
1315         }
1316
1317         // and if we dismiss everything, propagate to parent
1318         if ( dismissParent )
1319         {
1320             // dismissParent is recursive
1321             m_menuParent->Dismiss();
1322             m_menuParent->OnDismiss(true);
1323         }
1324     }
1325     else // no parent menu
1326     {
1327         // notify the menu bar if we're a top level menu
1328         if ( m_menuBar )
1329         {
1330             m_menuBar->OnDismissMenu(dismissParent);
1331         }
1332         else // popup menu
1333         {
1334             wxCHECK_RET( m_invokingWindow, _T("what kind of menu is this?") );
1335
1336             m_invokingWindow->DismissPopupMenu();
1337
1338             // Why reset it here? We need it for sending the event to...
1339             // SetInvokingWindow(NULL);
1340         }
1341     }
1342 }
1343
1344 void wxMenu::Popup(const wxPoint& pos, const wxSize& size, bool selectFirst)
1345 {
1346     // create the popup window if not done yet
1347     if ( !m_popupMenu )
1348     {
1349         m_popupMenu = new wxPopupMenuWindow(GetRootWindow(), this);
1350     }
1351
1352     // select the first item unless disabled
1353     if ( selectFirst )
1354     {
1355         m_popupMenu->SelectFirst();
1356     }
1357
1358     // the geometry might have changed since the last time we were shown, so
1359     // always resize
1360     m_popupMenu->SetClientSize(GetGeometryInfo().GetSize());
1361
1362     // position it as specified
1363     m_popupMenu->Position(pos, size);
1364
1365     // the menu can't have the focus itself (it is a Windows limitation), so
1366     // always keep the focus at the originating window
1367     wxWindow *focus = GetRootWindow();
1368
1369     wxASSERT_MSG( focus, _T("no window to keep focus on?") );
1370
1371     // and show it
1372     m_popupMenu->Popup(focus);
1373 }
1374
1375 void wxMenu::Dismiss()
1376 {
1377     wxCHECK_RET( IsShown(), _T("can't dismiss hidden menu") );
1378
1379     m_popupMenu->Dismiss();
1380 }
1381
1382 // ----------------------------------------------------------------------------
1383 // wxMenu event processing
1384 // ----------------------------------------------------------------------------
1385
1386 bool wxMenu::ProcessKeyDown(int key)
1387 {
1388     wxCHECK_MSG( m_popupMenu, false,
1389                  _T("can't process key events if not shown") );
1390
1391     return m_popupMenu->ProcessKeyDown(key);
1392 }
1393
1394 bool wxMenu::ClickItem(wxMenuItem *item)
1395 {
1396     int isChecked;
1397     if ( item->IsCheckable() )
1398     {
1399         // update the item state
1400         isChecked = !item->IsChecked();
1401
1402         item->Check(isChecked != 0);
1403     }
1404     else
1405     {
1406         // not applicabled
1407         isChecked = -1;
1408     }
1409
1410     return SendEvent(item->GetId(), isChecked);
1411 }
1412
1413 // ----------------------------------------------------------------------------
1414 // wxMenu accel support
1415 // ----------------------------------------------------------------------------
1416
1417 #if wxUSE_ACCEL
1418
1419 bool wxMenu::ProcessAccelEvent(const wxKeyEvent& event)
1420 {
1421     // do we have an item for this accel?
1422     wxMenuItem *item = m_accelTable.GetMenuItem(event);
1423     if ( item && item->IsEnabled() )
1424     {
1425         return ClickItem(item);
1426     }
1427
1428     // try our submenus
1429     for ( wxMenuItemList::compatibility_iterator node = GetMenuItems().GetFirst();
1430           node;
1431           node = node->GetNext() )
1432     {
1433         const wxMenuItem *item = node->GetData();
1434         if ( item->IsSubMenu() && item->IsEnabled() )
1435         {
1436             // try its elements
1437             if ( item->GetSubMenu()->ProcessAccelEvent(event) )
1438             {
1439                 return true;
1440             }
1441         }
1442     }
1443
1444     return false;
1445 }
1446
1447 void wxMenu::AddAccelFor(wxMenuItem *item)
1448 {
1449     wxAcceleratorEntry *accel = item->GetAccel();
1450     if ( accel )
1451     {
1452         accel->SetMenuItem(item);
1453
1454         m_accelTable.Add(*accel);
1455
1456         delete accel;
1457     }
1458 }
1459
1460 void wxMenu::RemoveAccelFor(wxMenuItem *item)
1461 {
1462     wxAcceleratorEntry *accel = item->GetAccel();
1463     if ( accel )
1464     {
1465         m_accelTable.Remove(*accel);
1466
1467         delete accel;
1468     }
1469 }
1470
1471 #endif // wxUSE_ACCEL
1472
1473 // ----------------------------------------------------------------------------
1474 // wxMenuItem construction
1475 // ----------------------------------------------------------------------------
1476
1477 wxMenuItem::wxMenuItem(wxMenu *parentMenu,
1478                        int id,
1479                        const wxString& text,
1480                        const wxString& help,
1481                        wxItemKind kind,
1482                        wxMenu *subMenu)
1483           : wxMenuItemBase(parentMenu, id, text, help, kind, subMenu)
1484 {
1485     m_posY =
1486     m_height = wxDefaultCoord;
1487
1488     m_radioGroup.start = -1;
1489     m_isRadioGroupStart = false;
1490
1491     m_bmpDisabled = wxNullBitmap;
1492
1493     UpdateAccelInfo();
1494 }
1495
1496 wxMenuItem::~wxMenuItem()
1497 {
1498 }
1499
1500 // ----------------------------------------------------------------------------
1501 // wxMenuItemBase methods implemented here
1502 // ----------------------------------------------------------------------------
1503
1504 /* static */
1505 wxMenuItem *wxMenuItemBase::New(wxMenu *parentMenu,
1506                                 int id,
1507                                 const wxString& name,
1508                                 const wxString& help,
1509                                 wxItemKind kind,
1510                                 wxMenu *subMenu)
1511 {
1512     return new wxMenuItem(parentMenu, id, name, help, kind, subMenu);
1513 }
1514
1515 /* static */
1516 wxString wxMenuItemBase::GetLabelFromText(const wxString& text)
1517 {
1518     return wxStripMenuCodes(text);
1519 }
1520
1521 // ----------------------------------------------------------------------------
1522 // wxMenuItem operations
1523 // ----------------------------------------------------------------------------
1524
1525 void wxMenuItem::NotifyMenu()
1526 {
1527     m_parentMenu->RefreshItem(this);
1528 }
1529
1530 void wxMenuItem::UpdateAccelInfo()
1531 {
1532     m_indexAccel = wxControl::FindAccelIndex(m_text);
1533
1534     // will be empty if the text contains no TABs - ok
1535     m_strAccel = m_text.AfterFirst(_T('\t'));
1536 }
1537
1538 void wxMenuItem::SetText(const wxString& text)
1539 {
1540     if ( text != m_text )
1541     {
1542         // first call the base class version to change m_text
1543         wxMenuItemBase::SetText(text);
1544
1545         UpdateAccelInfo();
1546
1547         NotifyMenu();
1548     }
1549 }
1550
1551 void wxMenuItem::SetCheckable(bool checkable)
1552 {
1553     if ( checkable != IsCheckable() )
1554     {
1555         wxMenuItemBase::SetCheckable(checkable);
1556
1557         NotifyMenu();
1558     }
1559 }
1560
1561 void wxMenuItem::SetBitmaps(const wxBitmap& bmpChecked,
1562                             const wxBitmap& bmpUnchecked)
1563 {
1564     m_bmpChecked = bmpChecked;
1565     m_bmpUnchecked = bmpUnchecked;
1566
1567     NotifyMenu();
1568 }
1569
1570 void wxMenuItem::Enable(bool enable)
1571 {
1572     if ( enable != m_isEnabled )
1573     {
1574         wxMenuItemBase::Enable(enable);
1575
1576         NotifyMenu();
1577     }
1578 }
1579
1580 void wxMenuItem::Check(bool check)
1581 {
1582     wxCHECK_RET( IsCheckable(), wxT("only checkable items may be checked") );
1583
1584     if ( m_isChecked == check )
1585         return;
1586
1587     if ( GetKind() == wxITEM_RADIO )
1588     {
1589         // it doesn't make sense to uncheck a radio item - what would this do?
1590         if ( !check )
1591             return;
1592
1593         // get the index of this item in the menu
1594         const wxMenuItemList& items = m_parentMenu->GetMenuItems();
1595         int pos = items.IndexOf(this);
1596         wxCHECK_RET( pos != wxNOT_FOUND,
1597                      _T("menuitem not found in the menu items list?") );
1598
1599         // get the radio group range
1600         int start,
1601             end;
1602
1603         if ( m_isRadioGroupStart )
1604         {
1605             // we already have all information we need
1606             start = pos;
1607             end = m_radioGroup.end;
1608         }
1609         else // next radio group item
1610         {
1611             // get the radio group end from the start item
1612             start = m_radioGroup.start;
1613             end = items.Item(start)->GetData()->m_radioGroup.end;
1614         }
1615
1616         // also uncheck all the other items in this radio group
1617         wxMenuItemList::compatibility_iterator node = items.Item(start);
1618         for ( int n = start; n <= end && node; n++ )
1619         {
1620             if ( n != pos )
1621             {
1622                 node->GetData()->m_isChecked = false;
1623             }
1624             node = node->GetNext();
1625         }
1626     }
1627
1628     wxMenuItemBase::Check(check);
1629
1630     NotifyMenu();
1631 }
1632
1633 // radio group stuff
1634 // -----------------
1635
1636 void wxMenuItem::SetAsRadioGroupStart()
1637 {
1638     m_isRadioGroupStart = true;
1639 }
1640
1641 void wxMenuItem::SetRadioGroupStart(int start)
1642 {
1643     wxASSERT_MSG( !m_isRadioGroupStart,
1644                   _T("should only be called for the next radio items") );
1645
1646     m_radioGroup.start = start;
1647 }
1648
1649 void wxMenuItem::SetRadioGroupEnd(int end)
1650 {
1651     wxASSERT_MSG( m_isRadioGroupStart,
1652                   _T("should only be called for the first radio item") );
1653
1654     m_radioGroup.end = end;
1655 }
1656
1657 // ----------------------------------------------------------------------------
1658 // wxMenuBar creation
1659 // ----------------------------------------------------------------------------
1660
1661 void wxMenuBar::Init()
1662 {
1663     m_frameLast = NULL;
1664
1665     m_current = -1;
1666
1667     m_menuShown = NULL;
1668
1669     m_shouldShowMenu = false;
1670 }
1671
1672 void wxMenuBar::Attach(wxFrame *frame)
1673 {
1674     // maybe you really wanted to call Detach()?
1675     wxCHECK_RET( frame, _T("wxMenuBar::Attach(NULL) called") );
1676
1677     wxMenuBarBase::Attach(frame);
1678
1679     if ( IsCreated() )
1680     {
1681         // reparent if necessary
1682         if ( m_frameLast != frame )
1683         {
1684             Reparent(frame);
1685         }
1686
1687         // show it back - was hidden by Detach()
1688         Show();
1689     }
1690     else // not created yet, do it now
1691     {
1692         // we have no way to return the error from here anyhow :-(
1693         (void)Create(frame, wxID_ANY);
1694
1695         SetCursor(wxCURSOR_ARROW);
1696
1697         SetFont(wxSystemSettings::GetFont(wxSYS_SYSTEM_FONT));
1698
1699         // calculate and set our height (it won't be changed any more)
1700         SetSize(wxDefaultCoord, GetBestSize().y);
1701     }
1702
1703     // remember the last frame which had us to avoid unnecessarily reparenting
1704     // above
1705     m_frameLast = frame;
1706 }
1707
1708 void wxMenuBar::Detach()
1709 {
1710     // don't delete the window because we may be reattached later, just hide it
1711     if ( m_frameLast )
1712     {
1713         Hide();
1714     }
1715
1716     wxMenuBarBase::Detach();
1717 }
1718
1719 wxMenuBar::~wxMenuBar()
1720 {
1721 }
1722
1723 // ----------------------------------------------------------------------------
1724 // wxMenuBar adding/removing items
1725 // ----------------------------------------------------------------------------
1726
1727 bool wxMenuBar::Append(wxMenu *menu, const wxString& title)
1728 {
1729     return Insert(GetCount(), menu, title);
1730 }
1731
1732 bool wxMenuBar::Insert(size_t pos, wxMenu *menu, const wxString& title)
1733 {
1734     if ( !wxMenuBarBase::Insert(pos, menu, title) )
1735         return false;
1736
1737     wxMenuInfo *info = new wxMenuInfo(title);
1738     m_menuInfos.Insert(info, pos);
1739
1740     RefreshAllItemsAfter(pos);
1741
1742     return true;
1743 }
1744
1745 wxMenu *wxMenuBar::Replace(size_t pos, wxMenu *menu, const wxString& title)
1746 {
1747     wxMenu *menuOld = wxMenuBarBase::Replace(pos, menu, title);
1748
1749     if ( menuOld )
1750     {
1751         wxMenuInfo& info = m_menuInfos[pos];
1752
1753         info.SetLabel(title);
1754
1755         // even if the old menu was disabled, the new one is not any more
1756         info.SetEnabled();
1757
1758         // even if we change only this one, the new label has different width,
1759         // so we need to refresh everything beyond this item as well
1760         RefreshAllItemsAfter(pos);
1761     }
1762
1763     return menuOld;
1764 }
1765
1766 wxMenu *wxMenuBar::Remove(size_t pos)
1767 {
1768     wxMenu *menuOld = wxMenuBarBase::Remove(pos);
1769
1770     if ( menuOld )
1771     {
1772         m_menuInfos.RemoveAt(pos);
1773
1774         // this doesn't happen too often, so don't try to be too smart - just
1775         // refresh everything
1776         Refresh();
1777     }
1778
1779     return menuOld;
1780 }
1781
1782 // ----------------------------------------------------------------------------
1783 // wxMenuBar top level menus access
1784 // ----------------------------------------------------------------------------
1785
1786 wxCoord wxMenuBar::GetItemWidth(size_t pos) const
1787 {
1788     return m_menuInfos[pos].GetWidth(wxConstCast(this, wxMenuBar));
1789 }
1790
1791 void wxMenuBar::EnableTop(size_t pos, bool enable)
1792 {
1793     wxCHECK_RET( pos < GetCount(), _T("invalid index in EnableTop") );
1794
1795     if ( enable != m_menuInfos[pos].IsEnabled() )
1796     {
1797         m_menuInfos[pos].SetEnabled(enable);
1798
1799         RefreshItem(pos);
1800     }
1801     //else: nothing to do
1802 }
1803
1804 bool wxMenuBar::IsEnabledTop(size_t pos) const
1805 {
1806     wxCHECK_MSG( pos < GetCount(), false, _T("invalid index in IsEnabledTop") );
1807
1808     return m_menuInfos[pos].IsEnabled();
1809 }
1810
1811 void wxMenuBar::SetLabelTop(size_t pos, const wxString& label)
1812 {
1813     wxCHECK_RET( pos < GetCount(), _T("invalid index in EnableTop") );
1814
1815     if ( label != m_menuInfos[pos].GetLabel() )
1816     {
1817         m_menuInfos[pos].SetLabel(label);
1818
1819         RefreshItem(pos);
1820     }
1821     //else: nothing to do
1822 }
1823
1824 wxString wxMenuBar::GetLabelTop(size_t pos) const
1825 {
1826     wxCHECK_MSG( pos < GetCount(), _T(""), _T("invalid index in GetLabelTop") );
1827
1828     return m_menuInfos[pos].GetLabel();
1829 }
1830
1831 // ----------------------------------------------------------------------------
1832 // wxMenuBar drawing
1833 // ----------------------------------------------------------------------------
1834
1835 void wxMenuBar::RefreshAllItemsAfter(size_t pos)
1836 {
1837     if ( !IsCreated() )
1838     {
1839         // no need to refresh if nothing is shown yet
1840         return;
1841     }
1842
1843     wxRect rect = GetItemRect(pos);
1844     rect.width = GetClientSize().x - rect.x;
1845     RefreshRect(rect);
1846 }
1847
1848 void wxMenuBar::RefreshItem(size_t pos)
1849 {
1850     wxCHECK_RET( pos != (size_t)-1,
1851                  _T("invalid item in wxMenuBar::RefreshItem") );
1852
1853     if ( !IsCreated() )
1854     {
1855         // no need to refresh if nothing is shown yet
1856         return;
1857     }
1858
1859     RefreshRect(GetItemRect(pos));
1860 }
1861
1862 void wxMenuBar::DoDraw(wxControlRenderer *renderer)
1863 {
1864     wxDC& dc = renderer->GetDC();
1865     dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
1866
1867     // redraw only the items which must be redrawn
1868
1869     // we don't have to use GetUpdateClientRect() here because our client rect
1870     // is the same as total one
1871     wxRect rectUpdate = GetUpdateRegion().GetBox();
1872
1873     int flagsMenubar = GetStateFlags();
1874
1875     wxRect rect;
1876     rect.y = 0;
1877     rect.height = GetClientSize().y;
1878
1879     wxCoord x = 0;
1880     size_t count = GetCount();
1881     for ( size_t n = 0; n < count; n++ )
1882     {
1883         if ( x > rectUpdate.GetRight() )
1884         {
1885             // all remaining items are to the right of rectUpdate
1886             break;
1887         }
1888
1889         rect.x = x;
1890         rect.width = GetItemWidth(n);
1891         x += rect.width;
1892         if ( x < rectUpdate.x )
1893         {
1894             // this item is still to the left of rectUpdate
1895             continue;
1896         }
1897
1898         int flags = flagsMenubar;
1899         if ( m_current != -1 && n == (size_t)m_current )
1900         {
1901             flags |= wxCONTROL_SELECTED;
1902         }
1903
1904         if ( !IsEnabledTop(n) )
1905         {
1906             flags |= wxCONTROL_DISABLED;
1907         }
1908
1909         GetRenderer()->DrawMenuBarItem
1910                        (
1911                             dc,
1912                             rect,
1913                             m_menuInfos[n].GetLabel(),
1914                             flags,
1915                             m_menuInfos[n].GetAccelIndex()
1916                        );
1917     }
1918 }
1919
1920 // ----------------------------------------------------------------------------
1921 // wxMenuBar geometry
1922 // ----------------------------------------------------------------------------
1923
1924 wxRect wxMenuBar::GetItemRect(size_t pos) const
1925 {
1926     wxASSERT_MSG( pos < GetCount(), _T("invalid menu bar item index") );
1927     wxASSERT_MSG( IsCreated(), _T("can't call this method yet") );
1928
1929     wxRect rect;
1930     rect.x =
1931     rect.y = 0;
1932     rect.height = GetClientSize().y;
1933
1934     for ( size_t n = 0; n < pos; n++ )
1935     {
1936         rect.x += GetItemWidth(n);
1937     }
1938
1939     rect.width = GetItemWidth(pos);
1940
1941     return rect;
1942 }
1943
1944 wxSize wxMenuBar::DoGetBestClientSize() const
1945 {
1946     wxSize size;
1947     if ( GetMenuCount() > 0 )
1948     {
1949         wxClientDC dc(wxConstCast(this, wxMenuBar));
1950         dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
1951         dc.GetTextExtent(GetLabelTop(0), &size.x, &size.y);
1952
1953         // adjust for the renderer we use
1954         size = GetRenderer()->GetMenuBarItemSize(size);
1955     }
1956     else // empty menubar
1957     {
1958         size.x =
1959         size.y = 0;
1960     }
1961
1962     // the width is arbitrary, of course, for horizontal menubar
1963     size.x = 100;
1964
1965     return size;
1966 }
1967
1968 int wxMenuBar::GetMenuFromPoint(const wxPoint& pos) const
1969 {
1970     if ( pos.x < 0 || pos.y < 0 || pos.y > GetClientSize().y )
1971         return -1;
1972
1973     // do find it
1974     wxCoord x = 0;
1975     size_t count = GetCount();
1976     for ( size_t item = 0; item < count; item++ )
1977     {
1978         x += GetItemWidth(item);
1979
1980         if ( x > pos.x )
1981         {
1982             return item;
1983         }
1984     }
1985
1986     // to the right of the last menu item
1987     return -1;
1988 }
1989
1990 // ----------------------------------------------------------------------------
1991 // wxMenuBar menu operations
1992 // ----------------------------------------------------------------------------
1993
1994 void wxMenuBar::SelectMenu(size_t pos)
1995 {
1996     SetFocus();
1997     wxLogTrace(_T("mousecapture"), _T("Capturing mouse from wxMenuBar::SelectMenu"));
1998     CaptureMouse();
1999
2000     DoSelectMenu(pos);
2001 }
2002
2003 void wxMenuBar::DoSelectMenu(size_t pos)
2004 {
2005     wxCHECK_RET( pos < GetCount(), _T("invalid menu index in DoSelectMenu") );
2006
2007     int posOld = m_current;
2008
2009     m_current = pos;
2010
2011     if ( posOld != -1 )
2012     {
2013         // close the previous menu
2014         if ( IsShowingMenu() )
2015         {
2016             // restore m_shouldShowMenu flag after DismissMenu() which resets
2017             // it to false
2018             bool old = m_shouldShowMenu;
2019
2020             DismissMenu();
2021
2022             m_shouldShowMenu = old;
2023         }
2024
2025         RefreshItem((size_t)posOld);
2026     }
2027
2028     RefreshItem(pos);
2029 }
2030
2031 void wxMenuBar::PopupMenu(size_t pos)
2032 {
2033     wxCHECK_RET( pos < GetCount(), _T("invalid menu index in PopupCurrentMenu") );
2034
2035     SetFocus();
2036     DoSelectMenu(pos);
2037     PopupCurrentMenu();
2038 }
2039
2040 // ----------------------------------------------------------------------------
2041 // wxMenuBar input handing
2042 // ----------------------------------------------------------------------------
2043
2044 /*
2045    Note that wxMenuBar doesn't use wxInputHandler but handles keyboard and
2046    mouse in the same way under all platforms. This is because it doesn't derive
2047    from wxControl (which works with input handlers) but directly from wxWindow.
2048
2049    Also, menu bar input handling is rather simple, so maybe it's not really
2050    worth making it themeable - at least I've decided against doing it now as it
2051    would merging the changes back into trunk more difficult. But it still could
2052    be done later if really needed.
2053  */
2054
2055 void wxMenuBar::OnKillFocus(wxFocusEvent& event)
2056 {
2057     if ( m_current != -1 )
2058     {
2059         RefreshItem((size_t)m_current);
2060
2061         m_current = -1;
2062     }
2063
2064     event.Skip();
2065 }
2066
2067 void wxMenuBar::OnLeftDown(wxMouseEvent& event)
2068 {
2069     if ( HasCapture() )
2070     {
2071         OnDismiss();
2072
2073         event.Skip();
2074     }
2075     else // we didn't have mouse capture, capture it now
2076     {
2077         m_current = GetMenuFromPoint(event.GetPosition());
2078         if ( m_current == -1 )
2079         {
2080             // unfortunately, we can't prevent wxMSW from giving us the focus,
2081             // so we can only give it back
2082             GiveAwayFocus();
2083         }
2084         else // on item
2085         {
2086             wxLogTrace(_T("mousecapture"), _T("Capturing mouse from wxMenuBar::OnLeftDown"));
2087             CaptureMouse();
2088
2089             // show it as selected
2090             RefreshItem((size_t)m_current);
2091
2092             // show the menu
2093             PopupCurrentMenu(false /* don't select first item - as Windows does */);
2094         }
2095     }
2096 }
2097
2098 void wxMenuBar::OnMouseMove(wxMouseEvent& event)
2099 {
2100     if ( HasCapture() )
2101     {
2102         (void)ProcessMouseEvent(event.GetPosition());
2103     }
2104     else
2105     {
2106         event.Skip();
2107     }
2108 }
2109
2110 bool wxMenuBar::ProcessMouseEvent(const wxPoint& pt)
2111 {
2112     // a hack to ignore the extra mouse events MSW sends us: this is similar to
2113     // wxUSE_MOUSEEVENT_HACK in wxWin itself but it isn't enough for us here as
2114     // we get the messages from different windows (old and new popup menus for
2115     // example)
2116 #ifdef __WXMSW__
2117     static wxPoint s_ptLast;
2118     if ( pt == s_ptLast )
2119     {
2120         return false;
2121     }
2122
2123     s_ptLast = pt;
2124 #endif // __WXMSW__
2125
2126     int currentNew = GetMenuFromPoint(pt);
2127     if ( (currentNew == -1) || (currentNew == m_current) )
2128     {
2129         return false;
2130     }
2131
2132     // select the new active item
2133     DoSelectMenu(currentNew);
2134
2135     // show the menu if we know that we should, even if we hadn't been showing
2136     // it before (this may happen if the previous menu was disabled)
2137     if ( m_shouldShowMenu && !m_menuShown)
2138     {
2139         // open the new menu if the old one we closed had been opened
2140         PopupCurrentMenu(false /* don't select first item - as Windows does */);
2141     }
2142
2143     return true;
2144 }
2145
2146 void wxMenuBar::OnKeyDown(wxKeyEvent& event)
2147 {
2148     // ensure that we have a current item - we might not have it if we're
2149     // given the focus with Alt or F10 press (and under GTK+ the menubar
2150     // somehow gets the keyboard events even when it doesn't have focus...)
2151     if ( m_current == -1 )
2152     {
2153         if ( !HasCapture() )
2154         {
2155             SelectMenu(0);
2156         }
2157         else // we do have capture
2158         {
2159             // we always maintain a valid current item while we're in modal
2160             // state (i.e. have the capture)
2161             wxFAIL_MSG( _T("how did we manage to lose current item?") );
2162
2163             return;
2164         }
2165     }
2166
2167     int key = event.GetKeyCode();
2168
2169     // first let the menu have it
2170     if ( IsShowingMenu() && m_menuShown->ProcessKeyDown(key) )
2171     {
2172         return;
2173     }
2174
2175     // cycle through the menu items when left/right arrows are pressed and open
2176     // the menu when up/down one is
2177     switch ( key )
2178     {
2179         case WXK_MENU:
2180             // Alt must be processed at wxWindow level too
2181             event.Skip();
2182             // fall through
2183
2184         case WXK_ESCAPE:
2185             // remove the selection and give the focus away
2186             if ( m_current != -1 )
2187             {
2188                 if ( IsShowingMenu() )
2189                 {
2190                     DismissMenu();
2191                 }
2192
2193                 OnDismiss();
2194             }
2195             break;
2196
2197         case WXK_LEFT:
2198         case WXK_RIGHT:
2199             {
2200                 size_t count = GetCount();
2201                 if ( count == 1 )
2202                 {
2203                     // the item won't change anyhow
2204                     break;
2205                 }
2206                 //else: otherwise, it will
2207
2208                 // remember if we were showing a menu - if we did, we should
2209                 // show the new menu after changing the item
2210                 bool wasMenuOpened = IsShowingMenu();
2211                 if ( wasMenuOpened )
2212                 {
2213                     DismissMenu();
2214                 }
2215
2216                 // cast is safe as we tested for -1 above
2217                 size_t currentNew = (size_t)m_current;
2218
2219                 if ( key == WXK_LEFT )
2220                 {
2221                     if ( currentNew-- == 0 )
2222                         currentNew = count - 1;
2223                 }
2224                 else // right
2225                 {
2226                     if ( ++currentNew == count )
2227                         currentNew = 0;
2228                 }
2229
2230                 DoSelectMenu(currentNew);
2231
2232                 if ( wasMenuOpened )
2233                 {
2234                     PopupCurrentMenu();
2235                 }
2236             }
2237             break;
2238
2239         case WXK_DOWN:
2240         case WXK_UP:
2241         case WXK_RETURN:
2242             // open the menu
2243             PopupCurrentMenu();
2244             break;
2245
2246         default:
2247             // letters open the corresponding menu
2248             {
2249                 bool unique;
2250                 int idxFound = FindNextItemForAccel(m_current, key, &unique);
2251
2252                 if ( idxFound != -1 )
2253                 {
2254                     if ( IsShowingMenu() )
2255                     {
2256                         DismissMenu();
2257                     }
2258
2259                     DoSelectMenu((size_t)idxFound);
2260
2261                     // if the item is not unique, just select it but don't
2262                     // activate as the user might have wanted to activate
2263                     // another item
2264                     //
2265                     // also, don't try to open a disabled menu
2266                     if ( unique && IsEnabledTop((size_t)idxFound) )
2267                     {
2268                         // open the menu
2269                         PopupCurrentMenu();
2270                     }
2271
2272                     // skip the "event.Skip()" below
2273                     break;
2274                 }
2275             }
2276
2277             event.Skip();
2278     }
2279 }
2280
2281 // ----------------------------------------------------------------------------
2282 // wxMenuBar accel handling
2283 // ----------------------------------------------------------------------------
2284
2285 int wxMenuBar::FindNextItemForAccel(int idxStart, int key, bool *unique) const
2286 {
2287     if ( !wxIsalnum(key) )
2288     {
2289         // we only support letters/digits as accels
2290         return -1;
2291     }
2292
2293     // do we have more than one item with this accel?
2294     if ( unique )
2295         *unique = true;
2296
2297     // translate everything to lower case before comparing
2298     wxChar chAccel = wxTolower(key);
2299
2300     // the index of the item with this accel
2301     int idxFound = -1;
2302
2303     // loop through all items searching for the item with this
2304     // accel starting at the item after the current one
2305     int count = GetCount();
2306     int n = idxStart == -1 ? 0 : idxStart + 1;
2307
2308     if ( n == count )
2309     {
2310         // wrap
2311         n = 0;
2312     }
2313
2314     idxStart = n;
2315     for ( ;; )
2316     {
2317         const wxMenuInfo& info = m_menuInfos[n];
2318
2319         int idxAccel = info.GetAccelIndex();
2320         if ( idxAccel != -1 &&
2321              wxTolower(info.GetLabel()[(size_t)idxAccel])
2322                 == chAccel )
2323         {
2324             // ok, found an item with this accel
2325             if ( idxFound == -1 )
2326             {
2327                 // store it but continue searching as we need to
2328                 // know if it's the only item with this accel or if
2329                 // there are more
2330                 idxFound = n;
2331             }
2332             else // we already had found such item
2333             {
2334                 if ( unique )
2335                     *unique = false;
2336
2337                 // no need to continue further, we won't find
2338                 // anything we don't already know
2339                 break;
2340             }
2341         }
2342
2343         // we want to iterate over all items wrapping around if
2344         // necessary
2345         if ( ++n == count )
2346         {
2347             // wrap
2348             n = 0;
2349         }
2350
2351         if ( n == idxStart )
2352         {
2353             // we've seen all items
2354             break;
2355         }
2356     }
2357
2358     return idxFound;
2359 }
2360
2361 #if wxUSE_ACCEL
2362
2363 bool wxMenuBar::ProcessAccelEvent(const wxKeyEvent& event)
2364 {
2365     size_t n = 0;
2366     for ( wxMenuList::compatibility_iterator node = m_menus.GetFirst();
2367           node;
2368           node = node->GetNext(), n++ )
2369     {
2370         // accels of the items in the disabled menus shouldn't work
2371         if ( m_menuInfos[n].IsEnabled() )
2372         {
2373             if ( node->GetData()->ProcessAccelEvent(event) )
2374             {
2375                 // menu processed it
2376                 return true;
2377             }
2378         }
2379     }
2380
2381     // not found
2382     return false;
2383 }
2384
2385 #endif // wxUSE_ACCEL
2386
2387 // ----------------------------------------------------------------------------
2388 // wxMenuBar menus showing
2389 // ----------------------------------------------------------------------------
2390
2391 void wxMenuBar::PopupCurrentMenu(bool selectFirst)
2392 {
2393     wxCHECK_RET( m_current != -1, _T("no menu to popup") );
2394
2395     // forgot to call DismissMenu()?
2396     wxASSERT_MSG( !m_menuShown, _T("shouldn't show two menus at once!") );
2397
2398     // in any case, we should show it - even if we won't
2399     m_shouldShowMenu = true;
2400
2401     if ( IsEnabledTop(m_current) )
2402     {
2403         // remember the menu we show
2404         m_menuShown = GetMenu(m_current);
2405
2406         // we don't show the menu at all if it has no items
2407         if ( !m_menuShown->IsEmpty() )
2408         {
2409             // position it correctly: note that we must use screen coords and
2410             // that we pass 0 as width to position the menu exactly below the
2411             // item, not to the right of it
2412             wxRect rectItem = GetItemRect(m_current);
2413
2414             m_menuShown->SetInvokingWindow(m_frameLast);
2415
2416             m_menuShown->Popup(ClientToScreen(rectItem.GetPosition()),
2417                                wxSize(0, rectItem.GetHeight()),
2418                                selectFirst);
2419         }
2420         else
2421         {
2422             // reset it back as no menu is shown
2423             m_menuShown = NULL;
2424         }
2425     }
2426     //else: don't show disabled menu
2427 }
2428
2429 void wxMenuBar::DismissMenu()
2430 {
2431     wxCHECK_RET( m_menuShown, _T("can't dismiss menu if none is shown") );
2432
2433     m_menuShown->Dismiss();
2434     OnDismissMenu();
2435 }
2436
2437 void wxMenuBar::OnDismissMenu(bool dismissMenuBar)
2438 {
2439     m_shouldShowMenu = false;
2440     m_menuShown = NULL;
2441     if ( dismissMenuBar )
2442     {
2443         OnDismiss();
2444     }
2445 }
2446
2447 void wxMenuBar::OnDismiss()
2448 {
2449     if ( GetCapture() )
2450     {
2451         wxLogTrace(_T("mousecapture"), _T("Releasing mouse from wxMenuBar::OnDismiss"));
2452         GetCapture()->ReleaseMouse();
2453     }
2454
2455     if ( m_current != -1 )
2456     {
2457         size_t current = m_current;
2458         m_current = -1;
2459
2460         RefreshItem(current);
2461     }
2462
2463     GiveAwayFocus();
2464 }
2465
2466 void wxMenuBar::GiveAwayFocus()
2467 {
2468     GetFrame()->SetFocus();
2469 }
2470
2471 // ----------------------------------------------------------------------------
2472 // popup menu support
2473 // ----------------------------------------------------------------------------
2474
2475 wxEventLoop *wxWindow::ms_evtLoopPopup = NULL;
2476
2477 bool wxWindow::DoPopupMenu(wxMenu *menu, int x, int y)
2478 {
2479     wxCHECK_MSG( !ms_evtLoopPopup, false,
2480                  _T("can't show more than one popup menu at a time") );
2481
2482 #ifdef __WXMSW__
2483     // we need to change the cursor before showing the menu as, apparently, no
2484     // cursor changes took place while the mouse is captured
2485     wxCursor cursorOld = GetCursor();
2486     SetCursor(wxCURSOR_ARROW);
2487 #endif // __WXMSW__
2488
2489 #if 0
2490     // flash any delayed log messages before showing the menu, otherwise it
2491     // could be dismissed (because it would lose focus) immediately after being
2492     // shown
2493     wxLog::FlushActive();
2494
2495     // some controls update themselves from OnIdle() call - let them do it
2496     wxTheApp->ProcessIdle();
2497
2498     // if the window hadn't been refreshed yet, the menu can adversely affect
2499     // its next OnPaint() handler execution - i.e. scrolled window refresh
2500     // logic breaks then as it scrolls part of the menu which hadn't been there
2501     // when the update event was generated into view
2502     Update();
2503 #endif // 0
2504
2505     menu->SetInvokingWindow(this);
2506
2507     // wxLogDebug( "Name of invoking window %s", menu->GetInvokingWindow()->GetName().c_str() );
2508
2509     menu->Popup(ClientToScreen(wxPoint(x, y)), wxSize(0, 0));
2510
2511     // this is not very useful if the menu was popped up because of the mouse
2512     // click but I think it is nice to do when it appears because of a key
2513     // press (i.e. Windows menu key)
2514     //
2515     // Windows itself doesn't do it, but IMHO this is nice
2516     WarpPointer(x, y);
2517
2518     // we have to redirect all keyboard input to the menu temporarily
2519     PushEventHandler(new wxMenuKbdRedirector(menu));
2520
2521     // enter the local modal loop
2522     ms_evtLoopPopup = new wxEventLoop;
2523     ms_evtLoopPopup->Run();
2524
2525     delete ms_evtLoopPopup;
2526     ms_evtLoopPopup = NULL;
2527
2528     // remove the handler
2529     PopEventHandler(true /* delete it */);
2530
2531     menu->SetInvokingWindow(NULL);
2532
2533 #ifdef __WXMSW__
2534     SetCursor(cursorOld);
2535 #endif // __WXMSW__
2536
2537     return true;
2538 }
2539
2540 void wxWindow::DismissPopupMenu()
2541 {
2542     wxCHECK_RET( ms_evtLoopPopup, _T("no popup menu shown") );
2543
2544     ms_evtLoopPopup->Exit();
2545 }
2546
2547 #endif // wxUSE_MENUS
2548