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