src/univ/menu.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/univ/menu.cpp
   3 // Purpose:     wxMenuItem, wxMenu and wxMenuBar implementation
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     25.08.00
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2000 SciTech Software, Inc. (www.scitechsoft.com)
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #include "wx/wxprec.h"
  21
  22 #ifdef __BORLANDC__
  23     #pragma hdrstop
  24 #endif
  25
  26 #if wxUSE_MENUS
  27
  28 #include "wx/menu.h"
  29 #include "wx/stockitem.h"
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/dynarray.h"
  33     #include "wx/control.h"      // for FindAccelIndex()
  34     #include "wx/settings.h"
  35     #include "wx/accel.h"
  36     #include "wx/log.h"
  37     #include "wx/frame.h"
  38     #include "wx/dcclient.h"
  39 #endif // WX_PRECOMP
  40
  41 #include "wx/popupwin.h"
  42 #include "wx/evtloop.h"
  43
  44 #include "wx/univ/renderer.h"
  45
  46 #ifdef __WXMSW__
  47     #include "wx/msw/private.h"
  48 #endif // __WXMSW__
  49
  50 typedef wxMenuItemList::compatibility_iterator wxMenuItemIter;
  51
  52 // ----------------------------------------------------------------------------
  53 // wxMenuInfo contains all extra information about top level menus we need
  54 // ----------------------------------------------------------------------------
  55
  56 class WXDLLEXPORT wxMenuInfo
  57 {
  58 public:
  59     // ctor
  60     wxMenuInfo(const wxString& text)
  61     {
  62         SetLabel(text);
  63         SetEnabled();
  64     }
  65
  66     // modifiers
  67
  68     void SetLabel(const wxString& text)
  69     {
  70         m_originalLabel = text;
  71
  72         // remember the accel char (may be -1 if none)
  73         m_indexAccel = wxControl::FindAccelIndex(text, &m_label);
  74
  75         // calculate the width later, after the menu bar is created
  76         m_width = 0;
  77     }
  78
  79     void SetEnabled(bool enabled = true) { m_isEnabled = enabled; }
  80
  81     // accessors
  82
  83     const wxString& GetLabel() const { return m_label; }
  84     const wxString& GetOriginalLabel() const { return m_originalLabel; }
  85     bool IsEnabled() const { return m_isEnabled; }
  86     wxCoord GetWidth(wxMenuBar *menubar) const
  87     {
  88         if ( !m_width )
  89         {
  90             wxConstCast(this, wxMenuInfo)->CalcWidth(menubar);
  91         }
  92
  93         return m_width;
  94     }
  95
  96     int GetAccelIndex() const { return m_indexAccel; }
  97
  98 private:
  99     void CalcWidth(wxMenuBar *menubar)
 100     {
 101         wxSize size;
 102         wxClientDC dc(menubar);
 103         dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
 104         dc.GetTextExtent(m_label, &size.x, &size.y);
 105
 106         // adjust for the renderer we use and store the width
 107         m_width = menubar->GetRenderer()->GetMenuBarItemSize(size).x;
 108     }
 109
 110     wxString m_label;
 111     wxString m_originalLabel;
 112     wxCoord m_width;
 113     int m_indexAccel;
 114     bool m_isEnabled;
 115 };
 116
 117 #include "wx/arrimpl.cpp"
 118
 119 WX_DEFINE_OBJARRAY(wxMenuInfoArray);
 120
 121 // ----------------------------------------------------------------------------
 122 // wxPopupMenuWindow: a popup window showing a menu
 123 // ----------------------------------------------------------------------------
 124
 125 class wxPopupMenuWindow : public wxPopupTransientWindow
 126 {
 127 public:
 128     wxPopupMenuWindow(wxWindow *parent, wxMenu *menu);
 129
 130     virtual ~wxPopupMenuWindow();
 131
 132     // override the base class version to select the first item initially
 133     virtual void Popup(wxWindow *focus = NULL);
 134
 135     // override the base class version to dismiss any open submenus
 136     virtual void Dismiss();
 137
 138     // called when a submenu is dismissed
 139     void OnSubmenuDismiss(bool dismissParent);
 140
 141     // the default wxMSW wxPopupTransientWindow::OnIdle disables the capture
 142     // when the cursor is inside the popup, which dsables the menu tracking
 143     // so override it to do nothing
 144 #ifdef __WXMSW__
 145     void OnIdle(wxIdleEvent& WXUNUSED(event)) { }
 146 #endif
 147
 148     // get the currently selected item (may be NULL)
 149     wxMenuItem *GetCurrentItem() const
 150     {
 151         return m_nodeCurrent ? m_nodeCurrent->GetData() : NULL;
 152     }
 153
 154     // find the menu item at given position
 155     wxMenuItemIter GetMenuItemFromPoint(const wxPoint& pt) const;
 156
 157     // refresh the given item
 158     void RefreshItem(wxMenuItem *item);
 159
 160     // preselect the first item
 161     void SelectFirst() { SetCurrentItem(m_menu->GetMenuItems().GetFirst()); }
 162
 163     // process the key event, return true if done
 164     bool ProcessKeyDown(int key);
 165
 166     // process mouse move event
 167     void ProcessMouseMove(const wxPoint& pt);
 168
 169     // don't dismiss the popup window if the parent menu was clicked
 170     virtual bool ProcessLeftDown(wxMouseEvent& event);
 171
 172 protected:
 173     // how did we perform this operation?
 174     enum InputMethod
 175     {
 176         WithKeyboard,
 177         WithMouse
 178     };
 179
 180     // notify the menu when the window disappears from screen
 181     virtual void OnDismiss();
 182
 183     // draw the menu inside this window
 184     virtual void DoDraw(wxControlRenderer *renderer);
 185
 186     // event handlers
 187     void OnLeftUp(wxMouseEvent& event);
 188     void OnMouseMove(wxMouseEvent& event);
 189     void OnMouseLeave(wxMouseEvent& event);
 190     void OnKeyDown(wxKeyEvent& event);
 191
 192     // reset the current item and node
 193     void ResetCurrent();
 194
 195     // set the current node and item without refreshing anything
 196     void SetCurrentItem(wxMenuItemIter node);
 197
 198     // change the current item refreshing the old and new items
 199     void ChangeCurrent(wxMenuItemIter node);
 200
 201     // activate item, i.e. call either ClickItem() or OpenSubmenu() depending
 202     // on what it is, return true if something was done (i.e. it's not a
 203     // separator...)
 204     bool ActivateItem(wxMenuItem *item, InputMethod how = WithKeyboard);
 205
 206     // send the event about the item click
 207     void ClickItem(wxMenuItem *item);
 208
 209     // show the submenu for this item
 210     void OpenSubmenu(wxMenuItem *item, InputMethod how = WithKeyboard);
 211
 212     // can this tiem be opened?
 213     bool CanOpen(wxMenuItem *item)
 214     {
 215         return item && item->IsEnabled() && item->IsSubMenu();
 216     }
 217
 218     // dismiss the menu and all parent menus too
 219     void DismissAndNotify();
 220
 221     // react to dimissing this menu and also dismiss the parent if
 222     // dismissParent
 223     void HandleDismiss(bool dismissParent);
 224
 225     // do we have an open submenu?
 226     bool HasOpenSubmenu() const { return m_hasOpenSubMenu; }
 227
 228     // get previous node after the current one
 229     wxMenuItemIter GetPrevNode() const;
 230
 231     // get previous node before the given one, wrapping if it's the first one
 232     wxMenuItemIter GetPrevNode(wxMenuItemIter node) const;
 233
 234     // get next node after the current one
 235     wxMenuItemIter GetNextNode() const;
 236
 237     // get next node after the given one, wrapping if it's the last one
 238     wxMenuItemIter GetNextNode(wxMenuItemIter node) const;
 239
 240 private:
 241     // the menu we show
 242     wxMenu *m_menu;
 243
 244     // the menu node corresponding to the current item
 245     wxMenuItemIter m_nodeCurrent;
 246
 247     // do we currently have an opened submenu?
 248     bool m_hasOpenSubMenu;
 249
 250     DECLARE_EVENT_TABLE()
 251 };
 252
 253 // ----------------------------------------------------------------------------
 254 // wxMenuKbdRedirector: an event handler which redirects kbd input to wxMenu
 255 // ----------------------------------------------------------------------------
 256
 257 class wxMenuKbdRedirector : public wxEvtHandler
 258 {
 259 public:
 260     wxMenuKbdRedirector(wxMenu *menu) { m_menu = menu; }
 261
 262     virtual bool ProcessEvent(wxEvent& event)
 263     {
 264         if ( event.GetEventType() == wxEVT_KEY_DOWN )
 265         {
 266             return m_menu->ProcessKeyDown(((wxKeyEvent &)event).GetKeyCode());
 267         }
 268         else
 269         {
 270             // return false;
 271
 272             return wxEvtHandler::ProcessEvent(event);
 273         }
 274     }
 275
 276 private:
 277     wxMenu *m_menu;
 278 };
 279
 280 // ----------------------------------------------------------------------------
 281 // wxWin macros
 282 // ----------------------------------------------------------------------------
 283
 284 BEGIN_EVENT_TABLE(wxPopupMenuWindow, wxPopupTransientWindow)
 285     EVT_KEY_DOWN(wxPopupMenuWindow::OnKeyDown)
 286
 287     EVT_LEFT_UP(wxPopupMenuWindow::OnLeftUp)
 288     EVT_MOTION(wxPopupMenuWindow::OnMouseMove)
 289     EVT_LEAVE_WINDOW(wxPopupMenuWindow::OnMouseLeave)
 290 #ifdef __WXMSW__
 291     EVT_IDLE(wxPopupMenuWindow::OnIdle)
 292 #endif
 293 END_EVENT_TABLE()
 294
 295 BEGIN_EVENT_TABLE(wxMenuBar, wxMenuBarBase)
 296     EVT_KILL_FOCUS(wxMenuBar::OnKillFocus)
 297
 298     EVT_KEY_DOWN(wxMenuBar::OnKeyDown)
 299
 300     EVT_LEFT_DOWN(wxMenuBar::OnLeftDown)
 301     EVT_MOTION(wxMenuBar::OnMouseMove)
 302 END_EVENT_TABLE()
 303
 304 // ============================================================================
 305 // implementation
 306 // ============================================================================
 307
 308 // ----------------------------------------------------------------------------
 309 // wxPopupMenuWindow
 310 // ----------------------------------------------------------------------------
 311
 312 wxPopupMenuWindow::wxPopupMenuWindow(wxWindow *parent, wxMenu *menu)
 313 {
 314     m_menu = menu;
 315     m_hasOpenSubMenu = false;
 316
 317     ResetCurrent();
 318
 319     (void)Create(parent, wxBORDER_RAISED);
 320
 321     SetCursor(wxCURSOR_ARROW);
 322 }
 323
 324 wxPopupMenuWindow::~wxPopupMenuWindow()
 325 {
 326     // When m_popupMenu in wxMenu is deleted because it
 327     // is a child of an old menu bar being deleted (note: it does
 328     // not get destroyed by the wxMenu destructor, but
 329     // by DestroyChildren()), m_popupMenu should be reset to NULL.
 330
 331     m_menu->m_popupMenu = NULL;
 332 }
 333
 334 // ----------------------------------------------------------------------------
 335 // wxPopupMenuWindow current item/node handling
 336 // ----------------------------------------------------------------------------
 337
 338 void wxPopupMenuWindow::ResetCurrent()
 339 {
 340     SetCurrentItem(wxMenuItemIter());
 341 }
 342
 343 void wxPopupMenuWindow::SetCurrentItem(wxMenuItemIter node)
 344 {
 345     m_nodeCurrent = node;
 346 }
 347
 348 void wxPopupMenuWindow::ChangeCurrent(wxMenuItemIter node)
 349 {
 350     if ( !m_nodeCurrent || !node || (node != m_nodeCurrent) )
 351     {
 352         wxMenuItemIter nodeOldCurrent = m_nodeCurrent;
 353
 354         m_nodeCurrent = node;
 355
 356         if ( nodeOldCurrent )
 357         {
 358             wxMenuItem *item = nodeOldCurrent->GetData();
 359             wxCHECK_RET( item, wxT("no current item?") );
 360
 361             // if it was the currently opened menu, close it
 362             if ( item->IsSubMenu() && item->GetSubMenu()->IsShown() )
 363             {
 364                 item->GetSubMenu()->Dismiss();
 365                 OnSubmenuDismiss( false );
 366             }
 367
 368             RefreshItem(item);
 369         }
 370
 371         if ( m_nodeCurrent )
 372             RefreshItem(m_nodeCurrent->GetData());
 373     }
 374 }
 375
 376 wxMenuItemIter wxPopupMenuWindow::GetPrevNode() const
 377 {
 378     // return the last node if there had been no previously selected one
 379     return m_nodeCurrent ? GetPrevNode(m_nodeCurrent)
 380                          : wxMenuItemIter(m_menu->GetMenuItems().GetLast());
 381 }
 382
 383 wxMenuItemIter
 384 wxPopupMenuWindow::GetPrevNode(wxMenuItemIter node) const
 385 {
 386     if ( node )
 387     {
 388         node = node->GetPrevious();
 389         if ( !node )
 390         {
 391             node = m_menu->GetMenuItems().GetLast();
 392         }
 393     }
 394     //else: the menu is empty
 395
 396     return node;
 397 }
 398
 399 wxMenuItemIter wxPopupMenuWindow::GetNextNode() const
 400 {
 401     // return the first node if there had been no previously selected one
 402     return m_nodeCurrent ? GetNextNode(m_nodeCurrent)
 403                          : wxMenuItemIter(m_menu->GetMenuItems().GetFirst());
 404 }
 405
 406 wxMenuItemIter
 407 wxPopupMenuWindow::GetNextNode(wxMenuItemIter node) const
 408 {
 409     if ( node )
 410     {
 411         node = node->GetNext();
 412         if ( !node )
 413         {
 414             node = m_menu->GetMenuItems().GetFirst();
 415         }
 416     }
 417     //else: the menu is empty
 418
 419     return node;
 420 }
 421
 422 // ----------------------------------------------------------------------------
 423 // wxPopupMenuWindow popup/dismiss
 424 // ----------------------------------------------------------------------------
 425
 426 void wxPopupMenuWindow::Popup(wxWindow *focus)
 427 {
 428     // check that the current item had been properly reset before
 429     wxASSERT_MSG( !m_nodeCurrent ||
 430                   m_nodeCurrent == m_menu->GetMenuItems().GetFirst(),
 431                   wxT("menu current item preselected incorrectly") );
 432
 433     wxPopupTransientWindow::Popup(focus);
 434
 435     // the base class no-longer captures the mouse automatically when Popup
 436     // is called, so do it here to allow the menu tracking to work
 437     if ( !HasCapture() )
 438         CaptureMouse();
 439
 440 #ifdef __WXMSW__
 441     // ensure that this window is really on top of everything: without using
 442     // SetWindowPos() it can be covered by its parent menu which is not
 443     // really what we want
 444     wxMenu *menuParent = m_menu->GetParent();
 445     if ( menuParent )
 446     {
 447         wxPopupMenuWindow *win = menuParent->m_popupMenu;
 448
 449         // if we're shown, the parent menu must be also shown
 450         wxCHECK_RET( win, wxT("parent menu is not shown?") );
 451
 452         if ( !::SetWindowPos(GetHwndOf(win), GetHwnd(),
 453                              0, 0, 0, 0,
 454                              SWP_NOMOVE | SWP_NOSIZE | SWP_NOREDRAW) )
 455         {
 456             wxLogLastError(wxT("SetWindowPos(HWND_TOP)"));
 457         }
 458
 459         Refresh();
 460     }
 461 #endif // __WXMSW__
 462 }
 463
 464 void wxPopupMenuWindow::Dismiss()
 465 {
 466     if ( HasOpenSubmenu() )
 467     {
 468         wxMenuItem *item = GetCurrentItem();
 469         wxCHECK_RET( item && item->IsSubMenu(), wxT("where is our open submenu?") );
 470
 471         wxPopupMenuWindow *win = item->GetSubMenu()->m_popupMenu;
 472         wxCHECK_RET( win, wxT("opened submenu is not opened?") );
 473
 474         win->Dismiss();
 475         OnSubmenuDismiss( false );
 476     }
 477
 478     wxPopupTransientWindow::Dismiss();
 479
 480     ResetCurrent();
 481 }
 482
 483 void wxPopupMenuWindow::OnDismiss()
 484 {
 485     // when we are dismissed because the user clicked elsewhere or we lost
 486     // focus in any other way, hide the parent menu as well
 487     HandleDismiss(true);
 488 }
 489
 490 void wxPopupMenuWindow::OnSubmenuDismiss(bool WXUNUSED(dismissParent))
 491 {
 492     m_hasOpenSubMenu = false;
 493 }
 494
 495 void wxPopupMenuWindow::HandleDismiss(bool dismissParent)
 496 {
 497     m_menu->OnDismiss(dismissParent);
 498 }
 499
 500 void wxPopupMenuWindow::DismissAndNotify()
 501 {
 502     Dismiss();
 503     HandleDismiss(true);
 504 }
 505
 506 // ----------------------------------------------------------------------------
 507 // wxPopupMenuWindow geometry
 508 // ----------------------------------------------------------------------------
 509
 510 wxMenuItemIter
 511 wxPopupMenuWindow::GetMenuItemFromPoint(const wxPoint& pt) const
 512 {
 513     // we only use the y coord normally, but still check x in case the point is
 514     // outside the window completely
 515     if ( wxWindow::HitTest(pt) == wxHT_WINDOW_INSIDE )
 516     {
 517         wxCoord y = 0;
 518         for ( wxMenuItemIter node = m_menu->GetMenuItems().GetFirst();
 519               node;
 520               node = node->GetNext() )
 521         {
 522             wxMenuItem *item = node->GetData();
 523             y += item->GetHeight();
 524             if ( y > pt.y )
 525             {
 526                 // found
 527                 return node;
 528             }
 529         }
 530     }
 531
 532     return wxMenuItemIter();
 533 }
 534
 535 // ----------------------------------------------------------------------------
 536 // wxPopupMenuWindow drawing
 537 // ----------------------------------------------------------------------------
 538
 539 void wxPopupMenuWindow::RefreshItem(wxMenuItem *item)
 540 {
 541     wxCHECK_RET( item, wxT("can't refresh NULL item") );
 542
 543     wxASSERT_MSG( IsShown(), wxT("can't refresh menu which is not shown") );
 544
 545     // FIXME: -1 here because of SetLogicalOrigin(1, 1) in DoDraw()
 546     RefreshRect(wxRect(0, item->GetPosition() - 1,
 547                 m_menu->GetGeometryInfo().GetSize().x, item->GetHeight()));
 548 }
 549
 550 void wxPopupMenuWindow::DoDraw(wxControlRenderer *renderer)
 551 {
 552     // no clipping so far - do we need it? I don't think so as the menu is
 553     // never partially covered as it is always on top of everything
 554
 555     wxDC& dc = renderer->GetDC();
 556     dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
 557
 558     // FIXME: this should be done in the renderer, however when it is fixed
 559     //        wxPopupMenuWindow::RefreshItem() should be changed too!
 560     dc.SetLogicalOrigin(1, 1);
 561
 562     wxRenderer *rend = renderer->GetRenderer();
 563
 564     wxCoord y = 0;
 565     const wxMenuGeometryInfo& gi = m_menu->GetGeometryInfo();
 566     for ( wxMenuItemIter node = m_menu->GetMenuItems().GetFirst();
 567           node;
 568           node = node->GetNext() )
 569     {
 570         wxMenuItem *item = node->GetData();
 571
 572         if ( item->IsSeparator() )
 573         {
 574             rend->DrawMenuSeparator(dc, y, gi);
 575         }
 576         else // not a separator
 577         {
 578             int flags = 0;
 579             if ( item->IsCheckable() )
 580             {
 581                 flags |= wxCONTROL_CHECKABLE;
 582
 583                 if ( item->IsChecked() )
 584                 {
 585                     flags |= wxCONTROL_CHECKED;
 586                 }
 587             }
 588
 589             if ( !item->IsEnabled() )
 590                 flags |= wxCONTROL_DISABLED;
 591
 592             if ( item->IsSubMenu() )
 593                 flags |= wxCONTROL_ISSUBMENU;
 594
 595             if ( item == GetCurrentItem() )
 596                 flags |= wxCONTROL_SELECTED;
 597
 598             wxBitmap bmp;
 599
 600             if ( !item->IsEnabled() )
 601             {
 602                 bmp = item->GetDisabledBitmap();
 603             }
 604
 605             if ( !bmp.IsOk() )
 606             {
 607                 // strangely enough, for unchecked item we use the
 608                 // "checked" bitmap because this is the default one - this
 609                 // explains this strange boolean expression
 610                 bmp = item->GetBitmap(!item->IsCheckable() || item->IsChecked());
 611             }
 612
 613             rend->DrawMenuItem
 614                   (
 615                      dc,
 616                      y,
 617                      gi,
 618                      item->GetItemLabelText(),
 619                      item->GetAccelString(),
 620                      bmp,
 621                      flags,
 622                      item->GetAccelIndex()
 623                   );
 624         }
 625
 626         y += item->GetHeight();
 627     }
 628 }
 629
 630 // ----------------------------------------------------------------------------
 631 // wxPopupMenuWindow actions
 632 // ----------------------------------------------------------------------------
 633
 634 void wxPopupMenuWindow::ClickItem(wxMenuItem *item)
 635 {
 636     wxCHECK_RET( item, wxT("can't click NULL item") );
 637
 638     wxASSERT_MSG( !item->IsSeparator() && !item->IsSubMenu(),
 639                   wxT("can't click this item") );
 640
 641     wxMenu* menu = m_menu;
 642
 643     // close all menus
 644     DismissAndNotify();
 645
 646     menu->ClickItem(item);
 647 }
 648
 649 void wxPopupMenuWindow::OpenSubmenu(wxMenuItem *item, InputMethod how)
 650 {
 651     wxCHECK_RET( item, wxT("can't open NULL submenu") );
 652
 653     wxMenu *submenu = item->GetSubMenu();
 654     wxCHECK_RET( submenu, wxT("can only open submenus!") );
 655
 656     // FIXME: should take into account the border width
 657     submenu->Popup(ClientToScreen(wxPoint(0, item->GetPosition())),
 658                    wxSize(m_menu->GetGeometryInfo().GetSize().x, 0),
 659                    how == WithKeyboard /* preselect first item then */);
 660
 661     m_hasOpenSubMenu = true;
 662 }
 663
 664 bool wxPopupMenuWindow::ActivateItem(wxMenuItem *item, InputMethod how)
 665 {
 666     // don't activate disabled items
 667     if ( !item || !item->IsEnabled() )
 668     {
 669         return false;
 670     }
 671
 672     // normal menu items generate commands, submenus can be opened and
 673     // the separators don't do anything
 674     if ( item->IsSubMenu() )
 675     {
 676         OpenSubmenu(item, how);
 677     }
 678     else if ( !item->IsSeparator() )
 679     {
 680         ClickItem(item);
 681     }
 682     else // separator, can't activate
 683     {
 684         return false;
 685     }
 686
 687     return true;
 688 }
 689
 690 // ----------------------------------------------------------------------------
 691 // wxPopupMenuWindow input handling
 692 // ----------------------------------------------------------------------------
 693
 694 bool wxPopupMenuWindow::ProcessLeftDown(wxMouseEvent& event)
 695 {
 696     // wxPopupWindowHandler dismisses the window when the mouse is clicked
 697     // outside it which is usually just fine, but there is one case when we
 698     // don't want to do it: if the mouse was clicked on the parent submenu item
 699     // which opens this menu, so check for it
 700
 701     wxPoint pos = event.GetPosition();
 702     if ( HitTest(pos.x, pos.y) == wxHT_WINDOW_OUTSIDE )
 703     {
 704         wxMenu *menu = m_menu->GetParent();
 705         if ( menu )
 706         {
 707             wxPopupMenuWindow *win = menu->m_popupMenu;
 708
 709             wxCHECK_MSG( win, false, wxT("parent menu not shown?") );
 710
 711             pos = ClientToScreen(pos);
 712             if ( win->GetMenuItemFromPoint(win->ScreenToClient(pos)) )
 713             {
 714                 // eat the event
 715                 return true;
 716             }
 717             //else: it is outside the parent menu as well, do dismiss this one
 718         }
 719     }
 720
 721     return false;
 722 }
 723
 724 void wxPopupMenuWindow::OnLeftUp(wxMouseEvent& event)
 725 {
 726     wxMenuItemIter node = GetMenuItemFromPoint(event.GetPosition());
 727     if ( node )
 728     {
 729         ActivateItem(node->GetData(), WithMouse);
 730     }
 731 }
 732
 733 void wxPopupMenuWindow::OnMouseMove(wxMouseEvent& event)
 734 {
 735     const wxPoint pt = event.GetPosition();
 736
 737     // we need to ignore extra mouse events: example when this happens is when
 738     // the mouse is on the menu and we open a submenu from keyboard - Windows
 739     // then sends us a dummy mouse move event, we (correctly) determine that it
 740     // happens in the parent menu and so immediately close the just opened
 741     // submenu!
 742 #ifdef __WXMSW__
 743     static wxPoint s_ptLast;
 744     wxPoint ptCur = ClientToScreen(pt);
 745     if ( ptCur == s_ptLast )
 746     {
 747         return;
 748     }
 749
 750     s_ptLast = ptCur;
 751 #endif // __WXMSW__
 752
 753     ProcessMouseMove(pt);
 754
 755     event.Skip();
 756 }
 757
 758 void wxPopupMenuWindow::ProcessMouseMove(const wxPoint& pt)
 759 {
 760     wxMenuItemIter node = GetMenuItemFromPoint(pt);
 761
 762     // don't reset current to NULL here, we only do it when the mouse leaves
 763     // the window (see below)
 764     if ( node )
 765     {
 766         if ( !m_nodeCurrent || (node != m_nodeCurrent) )
 767         {
 768             ChangeCurrent(node);
 769
 770             wxMenuItem *item = GetCurrentItem();
 771             if ( CanOpen(item) )
 772             {
 773                 OpenSubmenu(item, WithMouse);
 774             }
 775         }
 776         //else: same item, nothing to do
 777     }
 778     else // not on an item
 779     {
 780         // the last open submenu forwards the mouse move messages to its
 781         // parent, so if the mouse moves to another item of the parent menu,
 782         // this menu is closed and this other item is selected - in the similar
 783         // manner, the top menu forwards the mouse moves to the menubar which
 784         // allows to select another top level menu by just moving the mouse
 785
 786         // we need to translate our client coords to the client coords of the
 787         // window we forward this event to
 788         wxPoint ptScreen = ClientToScreen(pt);
 789
 790         // if the mouse is outside this menu, let the parent one to
 791         // process it
 792         wxMenu *menuParent = m_menu->GetParent();
 793         if ( menuParent )
 794         {
 795             wxPopupMenuWindow *win = menuParent->m_popupMenu;
 796
 797             // if we're shown, the parent menu must be also shown
 798             wxCHECK_RET( win, wxT("parent menu is not shown?") );
 799
 800             win->ProcessMouseMove(win->ScreenToClient(ptScreen));
 801         }
 802         else // no parent menu
 803         {
 804             wxMenuBar *menubar = m_menu->GetMenuBar();
 805             if ( menubar )
 806             {
 807                 if ( menubar->ProcessMouseEvent(
 808                             menubar->ScreenToClient(ptScreen)) )
 809                 {
 810                     // menubar has closed this menu and opened another one, probably
 811                     return;
 812                 }
 813             }
 814         }
 815         //else: top level popup menu, no other processing to do
 816     }
 817 }
 818
 819 void wxPopupMenuWindow::OnMouseLeave(wxMouseEvent& event)
 820 {
 821     // due to the artefact of mouse events generation under MSW, we actually
 822     // may get the mouse leave event after the menu had been already dismissed
 823     // and calling ChangeCurrent() would then assert, so don't do it
 824     if ( IsShown() )
 825     {
 826         // we shouldn't change the current them if our submenu is opened and
 827         // mouse moved there, in this case the submenu is responsable for
 828         // handling it
 829         bool resetCurrent;
 830         if ( HasOpenSubmenu() )
 831         {
 832             wxMenuItem *item = GetCurrentItem();
 833             wxCHECK_RET( CanOpen(item), wxT("where is our open submenu?") );
 834
 835             wxPopupMenuWindow *win = item->GetSubMenu()->m_popupMenu;
 836             wxCHECK_RET( win, wxT("submenu is opened but not shown?") );
 837
 838             // only handle this event if the mouse is not inside the submenu
 839             wxPoint pt = ClientToScreen(event.GetPosition());
 840             resetCurrent =
 841                 win->HitTest(win->ScreenToClient(pt)) == wxHT_WINDOW_OUTSIDE;
 842         }
 843         else
 844         {
 845             // this menu is the last opened
 846             resetCurrent = true;
 847         }
 848
 849         if ( resetCurrent )
 850         {
 851             ChangeCurrent(wxMenuItemIter());
 852         }
 853     }
 854
 855     event.Skip();
 856 }
 857
 858 void wxPopupMenuWindow::OnKeyDown(wxKeyEvent& event)
 859 {
 860     wxMenuBar *menubar = m_menu->GetMenuBar();
 861
 862     if ( menubar )
 863     {
 864         menubar->ProcessEvent(event);
 865     }
 866     else if ( !ProcessKeyDown(event.GetKeyCode()) )
 867     {
 868         event.Skip();
 869     }
 870 }
 871
 872 bool wxPopupMenuWindow::ProcessKeyDown(int key)
 873 {
 874     wxMenuItem *item = GetCurrentItem();
 875
 876     // first let the opened submenu to have it (no test for IsEnabled() here,
 877     // the keys navigate even in a disabled submenu if we had somehow managed
 878     // to open it inspit of this)
 879     if ( HasOpenSubmenu() )
 880     {
 881         wxCHECK_MSG( CanOpen(item), false,
 882                      wxT("has open submenu but another item selected?") );
 883
 884         if ( item->GetSubMenu()->ProcessKeyDown(key) )
 885             return true;
 886     }
 887
 888     bool processed = true;
 889
 890     // handle the up/down arrows, home, end, esc and return here, pass the
 891     // left/right arrows to the menu bar except when the right arrow can be
 892     // used to open a submenu
 893     switch ( key )
 894     {
 895         case WXK_LEFT:
 896             // if we're not a top level menu, close us, else leave this to the
 897             // menubar
 898             if ( !m_menu->GetParent() )
 899             {
 900                 processed = false;
 901                 break;
 902             }
 903
 904             // fall through
 905
 906         case WXK_ESCAPE:
 907             // close just this menu
 908             Dismiss();
 909             HandleDismiss(false);
 910             break;
 911
 912         case WXK_RETURN:
 913             processed = ActivateItem(item);
 914             break;
 915
 916         case WXK_HOME:
 917             ChangeCurrent(m_menu->GetMenuItems().GetFirst());
 918             break;
 919
 920         case WXK_END:
 921             ChangeCurrent(m_menu->GetMenuItems().GetLast());
 922             break;
 923
 924         case WXK_UP:
 925         case WXK_DOWN:
 926             {
 927                 bool up = key == WXK_UP;
 928
 929                 wxMenuItemIter nodeStart = up ? GetPrevNode() : GetNextNode(),
 930                                node = nodeStart;
 931                 while ( node && node->GetData()->IsSeparator() )
 932                 {
 933                     node = up ? GetPrevNode(node) : GetNextNode(node);
 934
 935                     if ( node == nodeStart )
 936                     {
 937                         // nothing but separators and disabled items in this
 938                         // menu, break out
 939                         node = wxMenuItemIter();
 940                     }
 941                 }
 942
 943                 if ( node )
 944                 {
 945                     ChangeCurrent(node);
 946                 }
 947                 else
 948                 {
 949                     processed = false;
 950                 }
 951             }
 952             break;
 953
 954         case WXK_RIGHT:
 955             // don't try to reopen an already opened menu
 956             if ( !HasOpenSubmenu() && CanOpen(item) )
 957             {
 958                 OpenSubmenu(item);
 959             }
 960             else
 961             {
 962                 processed = false;
 963             }
 964             break;
 965
 966         default:
 967             // look for the menu item starting with this letter
 968             if ( wxIsalnum((wxChar)key) )
 969             {
 970                 // we want to start from the item after this one because
 971                 // if we're already on the item with the given accel we want to
 972                 // go to the next one, not to stay in place
 973                 wxMenuItemIter nodeStart = GetNextNode();
 974
 975                 // do we have more than one item with this accel?
 976                 bool notUnique = false;
 977
 978                 // translate everything to lower case before comparing
 979                 wxChar chAccel = (wxChar)wxTolower(key);
 980
 981                 // loop through all items searching for the item with this
 982                 // accel
 983                 wxMenuItemIter nodeFound,
 984                                node = nodeStart;
 985                 for ( ;; )
 986                 {
 987                     item = node->GetData();
 988
 989                     int idxAccel = item->GetAccelIndex();
 990                     if ( idxAccel != -1 &&
 991                          (wxChar)wxTolower(item->GetItemLabelText()[(size_t)idxAccel])
 992                             == chAccel )
 993                     {
 994                         // ok, found an item with this accel
 995                         if ( !nodeFound )
 996                         {
 997                             // store it but continue searching as we need to
 998                             // know if it's the only item with this accel or if
 999                             // there are more
1000                             nodeFound = node;
1001                         }
1002                         else // we already had found such item
1003                         {
1004                             notUnique = true;
1005
1006                             // no need to continue further, we won't find
1007                             // anything we don't already know
1008                             break;
1009                         }
1010                     }
1011
1012                     // we want to iterate over all items wrapping around if
1013                     // necessary
1014                     node = GetNextNode(node);
1015                     if ( node == nodeStart )
1016                     {
1017                         // we've seen all nodes
1018                         break;
1019                     }
1020                 }
1021
1022                 if ( nodeFound )
1023                 {
1024                     item = nodeFound->GetData();
1025
1026                     // go to this item anyhow
1027                     ChangeCurrent(nodeFound);
1028
1029                     if ( !notUnique && item->IsEnabled() )
1030                     {
1031                         // unique item with this accel - activate it
1032                         processed = ActivateItem(item);
1033                     }
1034                     //else: just select it but don't activate as the user might
1035                     //      have wanted to activate another item
1036
1037                     // skip "processed = false" below
1038                     break;
1039                 }
1040             }
1041
1042             processed = false;
1043     }
1044
1045     return processed;
1046 }
1047
1048 // ----------------------------------------------------------------------------
1049 // wxMenu
1050 // ----------------------------------------------------------------------------
1051
1052 void wxMenu::Init()
1053 {
1054     m_geometry = NULL;
1055
1056     m_popupMenu = NULL;
1057
1058     m_startRadioGroup = -1;
1059 }
1060
1061 wxMenu::~wxMenu()
1062 {
1063     delete m_geometry;
1064     delete m_popupMenu;
1065 }
1066
1067 // ----------------------------------------------------------------------------
1068 // wxMenu and wxMenuGeometryInfo
1069 // ----------------------------------------------------------------------------
1070
1071 wxMenuGeometryInfo::~wxMenuGeometryInfo()
1072 {
1073 }
1074
1075 const wxMenuGeometryInfo& wxMenu::GetGeometryInfo() const
1076 {
1077     if ( !m_geometry )
1078     {
1079         if ( m_popupMenu )
1080         {
1081             wxConstCast(this, wxMenu)->m_geometry =
1082                 m_popupMenu->GetRenderer()->GetMenuGeometry(m_popupMenu, *this);
1083         }
1084         else
1085         {
1086             wxFAIL_MSG( wxT("can't get geometry without window") );
1087         }
1088     }
1089
1090     return *m_geometry;
1091 }
1092
1093 void wxMenu::InvalidateGeometryInfo()
1094 {
1095     wxDELETE(m_geometry);
1096 }
1097
1098 // ----------------------------------------------------------------------------
1099 // wxMenu adding/removing items
1100 // ----------------------------------------------------------------------------
1101
1102 void wxMenu::OnItemAdded(wxMenuItem *item)
1103 {
1104     InvalidateGeometryInfo();
1105
1106 #if wxUSE_ACCEL
1107     AddAccelFor(item);
1108 #endif // wxUSE_ACCEL
1109 }
1110
1111 void wxMenu::EndRadioGroup()
1112 {
1113     // we're not inside a radio group any longer
1114     m_startRadioGroup = -1;
1115 }
1116
1117 wxMenuItem* wxMenu::DoAppend(wxMenuItem *item)
1118 {
1119     if ( item->GetKind() == wxITEM_RADIO )
1120     {
1121         int count = GetMenuItemCount();
1122
1123         if ( m_startRadioGroup == -1 )
1124         {
1125             // start a new radio group
1126             m_startRadioGroup = count;
1127
1128             // for now it has just one element
1129             item->SetAsRadioGroupStart();
1130             item->SetRadioGroupEnd(m_startRadioGroup);
1131         }
1132         else // extend the current radio group
1133         {
1134             // we need to update its end item
1135             item->SetRadioGroupStart(m_startRadioGroup);
1136             wxMenuItemIter node = GetMenuItems().Item(m_startRadioGroup);
1137
1138             if ( node )
1139             {
1140                 node->GetData()->SetRadioGroupEnd(count);
1141             }
1142             else
1143             {
1144                 wxFAIL_MSG( wxT("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 NULL;
1155
1156     OnItemAdded(item);
1157
1158     return item;
1159 }
1160
1161 wxMenuItem* wxMenu::DoInsert(size_t pos, wxMenuItem *item)
1162 {
1163     if ( !wxMenuBase::DoInsert(pos, item) )
1164         return NULL;
1165
1166     OnItemAdded(item);
1167
1168     return item;
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, wxT("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     // After the menu is detached from the menu bar, it shouldn't send its
1211     // events to it.
1212     SetNextHandler(NULL);
1213
1214     wxMenuBase::Detach();
1215 }
1216
1217 // ----------------------------------------------------------------------------
1218 // wxMenu misc functions
1219 // ----------------------------------------------------------------------------
1220
1221 wxWindow *wxMenu::GetRootWindow() const
1222 {
1223     return GetMenuBar() ? GetMenuBar() : GetInvokingWindow();
1224 }
1225
1226 wxRenderer *wxMenu::GetRenderer() const
1227 {
1228     // we're going to crash without renderer!
1229     wxCHECK_MSG( m_popupMenu, NULL, wxT("neither popup nor menubar menu?") );
1230
1231     return m_popupMenu->GetRenderer();
1232 }
1233
1234 void wxMenu::RefreshItem(wxMenuItem *item)
1235 {
1236     // the item geometry changed, so our might have changed as well
1237     InvalidateGeometryInfo();
1238
1239     if ( IsShown() )
1240     {
1241         // this would be a bug in IsShown()
1242         wxCHECK_RET( m_popupMenu, wxT("must have popup window if shown!") );
1243
1244         // recalc geometry to update the item height and such
1245         (void)GetGeometryInfo();
1246
1247         m_popupMenu->RefreshItem(item);
1248     }
1249 }
1250
1251 // ----------------------------------------------------------------------------
1252 // wxMenu showing and hiding
1253 // ----------------------------------------------------------------------------
1254
1255 bool wxMenu::IsShown() const
1256 {
1257     return m_popupMenu && m_popupMenu->IsShown();
1258 }
1259
1260 void wxMenu::OnDismiss(bool dismissParent)
1261 {
1262     if ( m_menuParent )
1263     {
1264         // always notify the parent about submenu disappearance
1265         wxPopupMenuWindow *win = m_menuParent->m_popupMenu;
1266         if ( win )
1267         {
1268             win->OnSubmenuDismiss( true );
1269         }
1270         else
1271         {
1272             wxFAIL_MSG( wxT("parent menu not shown?") );
1273         }
1274
1275         // and if we dismiss everything, propagate to parent
1276         if ( dismissParent )
1277         {
1278             // dismissParent is recursive
1279             m_menuParent->Dismiss();
1280             m_menuParent->OnDismiss(true);
1281         }
1282     }
1283     else // no parent menu
1284     {
1285         // notify the menu bar if we're a top level menu
1286         if ( m_menuBar )
1287         {
1288             m_menuBar->OnDismissMenu(dismissParent);
1289         }
1290         else // popup menu
1291         {
1292             wxWindow * const win = GetInvokingWindow();
1293             wxCHECK_RET( win, wxT("what kind of menu is this?") );
1294
1295             win->DismissPopupMenu();
1296         }
1297     }
1298 }
1299
1300 void wxMenu::Popup(const wxPoint& pos, const wxSize& size, bool selectFirst)
1301 {
1302     // create the popup window if not done yet
1303     if ( !m_popupMenu )
1304     {
1305         m_popupMenu = new wxPopupMenuWindow(GetRootWindow(), this);
1306     }
1307
1308     // select the first item unless disabled
1309     if ( selectFirst )
1310     {
1311         m_popupMenu->SelectFirst();
1312     }
1313
1314     // the geometry might have changed since the last time we were shown, so
1315     // always resize
1316     m_popupMenu->SetClientSize(GetGeometryInfo().GetSize());
1317
1318     // position it as specified
1319     m_popupMenu->Position(pos, size);
1320
1321     // the menu can't have the focus itself (it is a Windows limitation), so
1322     // always keep the focus at the originating window
1323     wxWindow *focus = GetRootWindow();
1324
1325     wxASSERT_MSG( focus, wxT("no window to keep focus on?") );
1326
1327     // and show it
1328     m_popupMenu->Popup(focus);
1329 }
1330
1331 void wxMenu::Dismiss()
1332 {
1333     wxCHECK_RET( IsShown(), wxT("can't dismiss hidden menu") );
1334
1335     m_popupMenu->Dismiss();
1336 }
1337
1338 // ----------------------------------------------------------------------------
1339 // wxMenu event processing
1340 // ----------------------------------------------------------------------------
1341
1342 bool wxMenu::ProcessKeyDown(int key)
1343 {
1344     wxCHECK_MSG( m_popupMenu, false,
1345                  wxT("can't process key events if not shown") );
1346
1347     return m_popupMenu->ProcessKeyDown(key);
1348 }
1349
1350 bool wxMenu::ClickItem(wxMenuItem *item)
1351 {
1352     int isChecked;
1353     if ( item->IsCheckable() )
1354     {
1355         // update the item state
1356         isChecked = !item->IsChecked();
1357
1358         item->Check(isChecked != 0);
1359     }
1360     else
1361     {
1362         // not applicabled
1363         isChecked = -1;
1364     }
1365
1366     return SendEvent(item->GetId(), isChecked);
1367 }
1368
1369 // ----------------------------------------------------------------------------
1370 // wxMenu accel support
1371 // ----------------------------------------------------------------------------
1372
1373 #if wxUSE_ACCEL
1374
1375 bool wxMenu::ProcessAccelEvent(const wxKeyEvent& event)
1376 {
1377     // do we have an item for this accel?
1378     wxMenuItem *item = m_accelTable.GetMenuItem(event);
1379     if ( item && item->IsEnabled() )
1380     {
1381         return ClickItem(item);
1382     }
1383
1384     // try our submenus
1385     for ( wxMenuItemIter node = GetMenuItems().GetFirst();
1386           node;
1387           node = node->GetNext() )
1388     {
1389         const wxMenuItem *item = node->GetData();
1390         if ( item->IsSubMenu() && item->IsEnabled() )
1391         {
1392             // try its elements
1393             if ( item->GetSubMenu()->ProcessAccelEvent(event) )
1394             {
1395                 return true;
1396             }
1397         }
1398     }
1399
1400     return false;
1401 }
1402
1403 void wxMenu::AddAccelFor(wxMenuItem *item)
1404 {
1405     wxAcceleratorEntry *accel = item->GetAccel();
1406     if ( accel )
1407     {
1408         accel->SetMenuItem(item);
1409
1410         m_accelTable.Add(*accel);
1411
1412         delete accel;
1413     }
1414 }
1415
1416 void wxMenu::RemoveAccelFor(wxMenuItem *item)
1417 {
1418     wxAcceleratorEntry *accel = item->GetAccel();
1419     if ( accel )
1420     {
1421         m_accelTable.Remove(*accel);
1422
1423         delete accel;
1424     }
1425 }
1426
1427 #endif // wxUSE_ACCEL
1428
1429 // ----------------------------------------------------------------------------
1430 // wxMenuItem construction
1431 // ----------------------------------------------------------------------------
1432
1433 wxMenuItem::wxMenuItem(wxMenu *parentMenu,
1434                        int id,
1435                        const wxString& text,
1436                        const wxString& help,
1437                        wxItemKind kind,
1438                        wxMenu *subMenu)
1439           : wxMenuItemBase(parentMenu, id, text, help, kind, subMenu)
1440 {
1441     m_posY =
1442     m_height = wxDefaultCoord;
1443
1444     m_radioGroup.start = -1;
1445     m_isRadioGroupStart = false;
1446
1447     m_bmpDisabled = wxNullBitmap;
1448
1449     UpdateAccelInfo();
1450 }
1451
1452 wxMenuItem::~wxMenuItem()
1453 {
1454 }
1455
1456 // ----------------------------------------------------------------------------
1457 // wxMenuItemBase methods implemented here
1458 // ----------------------------------------------------------------------------
1459
1460 /* static */
1461 wxMenuItem *wxMenuItemBase::New(wxMenu *parentMenu,
1462                                 int id,
1463                                 const wxString& name,
1464                                 const wxString& help,
1465                                 wxItemKind kind,
1466                                 wxMenu *subMenu)
1467 {
1468     return new wxMenuItem(parentMenu, id, name, help, kind, subMenu);
1469 }
1470
1471 // ----------------------------------------------------------------------------
1472 // wxMenuItem operations
1473 // ----------------------------------------------------------------------------
1474
1475 void wxMenuItem::NotifyMenu()
1476 {
1477     m_parentMenu->RefreshItem(this);
1478 }
1479
1480 void wxMenuItem::UpdateAccelInfo()
1481 {
1482     m_indexAccel = wxControl::FindAccelIndex(m_text);
1483
1484     // will be empty if the text contains no TABs - ok
1485     m_strAccel = m_text.AfterFirst(wxT('\t'));
1486 }
1487
1488 void wxMenuItem::SetItemLabel(const wxString& text)
1489 {
1490     if ( text != m_text )
1491     {
1492         // first call the base class version to change m_text
1493         // (and also check if we don't have a stock menu item)
1494         wxMenuItemBase::SetItemLabel(text);
1495
1496         UpdateAccelInfo();
1497
1498         NotifyMenu();
1499     }
1500 }
1501
1502 void wxMenuItem::SetCheckable(bool checkable)
1503 {
1504     if ( checkable != IsCheckable() )
1505     {
1506         wxMenuItemBase::SetCheckable(checkable);
1507
1508         NotifyMenu();
1509     }
1510 }
1511
1512 void wxMenuItem::SetBitmaps(const wxBitmap& bmpChecked,
1513                             const wxBitmap& bmpUnchecked)
1514 {
1515     m_bmpChecked = bmpChecked;
1516     m_bmpUnchecked = bmpUnchecked;
1517
1518     NotifyMenu();
1519 }
1520
1521 void wxMenuItem::Enable(bool enable)
1522 {
1523     if ( enable != m_isEnabled )
1524     {
1525         wxMenuItemBase::Enable(enable);
1526
1527         NotifyMenu();
1528     }
1529 }
1530
1531 void wxMenuItem::Check(bool check)
1532 {
1533     wxCHECK_RET( IsCheckable(), wxT("only checkable items may be checked") );
1534
1535     if ( m_isChecked == check )
1536         return;
1537
1538     if ( GetKind() == wxITEM_RADIO )
1539     {
1540         // it doesn't make sense to uncheck a radio item - what would this do?
1541         if ( !check )
1542             return;
1543
1544         // get the index of this item in the menu
1545         const wxMenuItemList& items = m_parentMenu->GetMenuItems();
1546         int pos = items.IndexOf(this);
1547         wxCHECK_RET( pos != wxNOT_FOUND,
1548                      wxT("menuitem not found in the menu items list?") );
1549
1550         // get the radio group range
1551         int start,
1552             end;
1553
1554         if ( m_isRadioGroupStart )
1555         {
1556             // we already have all information we need
1557             start = pos;
1558             end = m_radioGroup.end;
1559         }
1560         else // next radio group item
1561         {
1562             // get the radio group end from the start item
1563             start = m_radioGroup.start;
1564             end = items.Item(start)->GetData()->m_radioGroup.end;
1565         }
1566
1567         // also uncheck all the other items in this radio group
1568         wxMenuItemIter node = items.Item(start);
1569         for ( int n = start; n <= end && node; n++ )
1570         {
1571             if ( n != pos )
1572             {
1573                 node->GetData()->m_isChecked = false;
1574             }
1575             node = node->GetNext();
1576         }
1577     }
1578
1579     wxMenuItemBase::Check(check);
1580
1581     NotifyMenu();
1582 }
1583
1584 // radio group stuff
1585 // -----------------
1586
1587 void wxMenuItem::SetAsRadioGroupStart()
1588 {
1589     m_isRadioGroupStart = true;
1590 }
1591
1592 void wxMenuItem::SetRadioGroupStart(int start)
1593 {
1594     wxASSERT_MSG( !m_isRadioGroupStart,
1595                   wxT("should only be called for the next radio items") );
1596
1597     m_radioGroup.start = start;
1598 }
1599
1600 void wxMenuItem::SetRadioGroupEnd(int end)
1601 {
1602     wxASSERT_MSG( m_isRadioGroupStart,
1603                   wxT("should only be called for the first radio item") );
1604
1605     m_radioGroup.end = end;
1606 }
1607
1608 // ----------------------------------------------------------------------------
1609 // wxMenuBar creation
1610 // ----------------------------------------------------------------------------
1611
1612 void wxMenuBar::Init()
1613 {
1614     m_frameLast = NULL;
1615
1616     m_current = -1;
1617
1618     m_menuShown = NULL;
1619
1620     m_shouldShowMenu = false;
1621 }
1622
1623 wxMenuBar::wxMenuBar(size_t n, wxMenu *menus[], const wxString titles[], long WXUNUSED(style))
1624 {
1625     Init();
1626
1627     for (size_t i = 0; i < n; ++i )
1628         Append(menus[i], titles[i]);
1629 }
1630
1631 void wxMenuBar::Attach(wxFrame *frame)
1632 {
1633     // maybe you really wanted to call Detach()?
1634     wxCHECK_RET( frame, wxT("wxMenuBar::Attach(NULL) called") );
1635
1636     wxMenuBarBase::Attach(frame);
1637
1638     if ( IsCreated() )
1639     {
1640         // reparent if necessary
1641         if ( m_frameLast != frame )
1642         {
1643             Reparent(frame);
1644         }
1645
1646         // show it back - was hidden by Detach()
1647         Show();
1648     }
1649     else // not created yet, do it now
1650     {
1651         // we have no way to return the error from here anyhow :-(
1652         (void)Create(frame, wxID_ANY);
1653
1654         SetCursor(wxCURSOR_ARROW);
1655
1656         SetFont(wxSystemSettings::GetFont(wxSYS_SYSTEM_FONT));
1657
1658         // calculate and set our height (it won't be changed any more)
1659         SetSize(wxDefaultCoord, GetBestSize().y);
1660     }
1661
1662     // remember the last frame which had us to avoid unnecessarily reparenting
1663     // above
1664     m_frameLast = frame;
1665 }
1666
1667 void wxMenuBar::Detach()
1668 {
1669     // don't delete the window because we may be reattached later, just hide it
1670     if ( m_frameLast )
1671     {
1672         Hide();
1673     }
1674
1675     wxMenuBarBase::Detach();
1676 }
1677
1678 wxMenuBar::~wxMenuBar()
1679 {
1680 }
1681
1682 // ----------------------------------------------------------------------------
1683 // wxMenuBar adding/removing items
1684 // ----------------------------------------------------------------------------
1685
1686 bool wxMenuBar::Append(wxMenu *menu, const wxString& title)
1687 {
1688     return Insert(GetCount(), menu, title);
1689 }
1690
1691 bool wxMenuBar::Insert(size_t pos, wxMenu *menu, const wxString& title)
1692 {
1693     if ( !wxMenuBarBase::Insert(pos, menu, title) )
1694         return false;
1695
1696     wxMenuInfo *info = new wxMenuInfo(title);
1697     m_menuInfos.Insert(info, pos);
1698
1699     RefreshAllItemsAfter(pos);
1700
1701     return true;
1702 }
1703
1704 wxMenu *wxMenuBar::Replace(size_t pos, wxMenu *menu, const wxString& title)
1705 {
1706     wxMenu *menuOld = wxMenuBarBase::Replace(pos, menu, title);
1707
1708     if ( menuOld )
1709     {
1710         wxMenuInfo& info = m_menuInfos[pos];
1711
1712         info.SetLabel(title);
1713
1714         // even if the old menu was disabled, the new one is not any more
1715         info.SetEnabled();
1716
1717         // even if we change only this one, the new label has different width,
1718         // so we need to refresh everything beyond this item as well
1719         RefreshAllItemsAfter(pos);
1720     }
1721
1722     return menuOld;
1723 }
1724
1725 wxMenu *wxMenuBar::Remove(size_t pos)
1726 {
1727     wxMenu *menuOld = wxMenuBarBase::Remove(pos);
1728
1729     if ( menuOld )
1730     {
1731         m_menuInfos.RemoveAt(pos);
1732
1733         // this doesn't happen too often, so don't try to be too smart - just
1734         // refresh everything
1735         Refresh();
1736     }
1737
1738     return menuOld;
1739 }
1740
1741 // ----------------------------------------------------------------------------
1742 // wxMenuBar top level menus access
1743 // ----------------------------------------------------------------------------
1744
1745 wxCoord wxMenuBar::GetItemWidth(size_t pos) const
1746 {
1747     return m_menuInfos[pos].GetWidth(wxConstCast(this, wxMenuBar));
1748 }
1749
1750 void wxMenuBar::EnableTop(size_t pos, bool enable)
1751 {
1752     wxCHECK_RET( pos < GetCount(), wxT("invalid index in EnableTop") );
1753
1754     if ( enable != m_menuInfos[pos].IsEnabled() )
1755     {
1756         m_menuInfos[pos].SetEnabled(enable);
1757
1758         RefreshItem(pos);
1759     }
1760     //else: nothing to do
1761 }
1762
1763 bool wxMenuBar::IsEnabledTop(size_t pos) const
1764 {
1765     wxCHECK_MSG( pos < GetCount(), false, wxT("invalid index in IsEnabledTop") );
1766
1767     return m_menuInfos[pos].IsEnabled();
1768 }
1769
1770 void wxMenuBar::SetMenuLabel(size_t pos, const wxString& label)
1771 {
1772     wxCHECK_RET( pos < GetCount(), wxT("invalid index in SetMenuLabel") );
1773
1774     if ( label != m_menuInfos[pos].GetOriginalLabel() )
1775     {
1776         m_menuInfos[pos].SetLabel(label);
1777
1778         RefreshItem(pos);
1779     }
1780     //else: nothing to do
1781 }
1782
1783 wxString wxMenuBar::GetMenuLabel(size_t pos) const
1784 {
1785     wxCHECK_MSG( pos < GetCount(), wxEmptyString, wxT("invalid index in GetMenuLabel") );
1786
1787     return m_menuInfos[pos].GetOriginalLabel();
1788 }
1789
1790 // ----------------------------------------------------------------------------
1791 // wxMenuBar drawing
1792 // ----------------------------------------------------------------------------
1793
1794 void wxMenuBar::RefreshAllItemsAfter(size_t pos)
1795 {
1796     if ( !IsCreated() )
1797     {
1798         // no need to refresh if nothing is shown yet
1799         return;
1800     }
1801
1802     wxRect rect = GetItemRect(pos);
1803     rect.width = GetClientSize().x - rect.x;
1804     RefreshRect(rect);
1805 }
1806
1807 void wxMenuBar::RefreshItem(size_t pos)
1808 {
1809     wxCHECK_RET( pos != (size_t)-1,
1810                  wxT("invalid item in wxMenuBar::RefreshItem") );
1811
1812     if ( !IsCreated() )
1813     {
1814         // no need to refresh if nothing is shown yet
1815         return;
1816     }
1817
1818     RefreshRect(GetItemRect(pos));
1819 }
1820
1821 void wxMenuBar::DoDraw(wxControlRenderer *renderer)
1822 {
1823     wxDC& dc = renderer->GetDC();
1824     dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
1825
1826     // redraw only the items which must be redrawn
1827
1828     // we don't have to use GetUpdateClientRect() here because our client rect
1829     // is the same as total one
1830     wxRect rectUpdate = GetUpdateRegion().GetBox();
1831
1832     int flagsMenubar = GetStateFlags();
1833
1834     wxRect rect;
1835     rect.y = 0;
1836     rect.height = GetClientSize().y;
1837
1838     wxCoord x = 0;
1839     size_t count = GetCount();
1840     for ( size_t n = 0; n < count; n++ )
1841     {
1842         if ( x > rectUpdate.GetRight() )
1843         {
1844             // all remaining items are to the right of rectUpdate
1845             break;
1846         }
1847
1848         rect.x = x;
1849         rect.width = GetItemWidth(n);
1850         x += rect.width;
1851         if ( x < rectUpdate.x )
1852         {
1853             // this item is still to the left of rectUpdate
1854             continue;
1855         }
1856
1857         int flags = flagsMenubar;
1858         if ( m_current != -1 && n == (size_t)m_current )
1859         {
1860             flags |= wxCONTROL_SELECTED;
1861         }
1862
1863         if ( !IsEnabledTop(n) )
1864         {
1865             flags |= wxCONTROL_DISABLED;
1866         }
1867
1868         GetRenderer()->DrawMenuBarItem
1869                        (
1870                             dc,
1871                             rect,
1872                             m_menuInfos[n].GetLabel(),
1873                             flags,
1874                             m_menuInfos[n].GetAccelIndex()
1875                        );
1876     }
1877 }
1878
1879 // ----------------------------------------------------------------------------
1880 // wxMenuBar geometry
1881 // ----------------------------------------------------------------------------
1882
1883 wxRect wxMenuBar::GetItemRect(size_t pos) const
1884 {
1885     wxASSERT_MSG( pos < GetCount(), wxT("invalid menu bar item index") );
1886     wxASSERT_MSG( IsCreated(), wxT("can't call this method yet") );
1887
1888     wxRect rect;
1889     rect.x =
1890     rect.y = 0;
1891     rect.height = GetClientSize().y;
1892
1893     for ( size_t n = 0; n < pos; n++ )
1894     {
1895         rect.x += GetItemWidth(n);
1896     }
1897
1898     rect.width = GetItemWidth(pos);
1899
1900     return rect;
1901 }
1902
1903 wxSize wxMenuBar::DoGetBestClientSize() const
1904 {
1905     wxSize size;
1906     if ( GetMenuCount() > 0 )
1907     {
1908         wxClientDC dc(wxConstCast(this, wxMenuBar));
1909         dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
1910         dc.GetTextExtent(GetMenuLabel(0), &size.x, &size.y);
1911
1912         // adjust for the renderer we use
1913         size = GetRenderer()->GetMenuBarItemSize(size);
1914     }
1915     else // empty menubar
1916     {
1917         size.x =
1918         size.y = 0;
1919     }
1920
1921     // the width is arbitrary, of course, for horizontal menubar
1922     size.x = 100;
1923
1924     return size;
1925 }
1926
1927 int wxMenuBar::GetMenuFromPoint(const wxPoint& pos) const
1928 {
1929     if ( pos.x < 0 || pos.y < 0 || pos.y > GetClientSize().y )
1930         return -1;
1931
1932     // do find it
1933     wxCoord x = 0;
1934     size_t count = GetCount();
1935     for ( size_t item = 0; item < count; item++ )
1936     {
1937         x += GetItemWidth(item);
1938
1939         if ( x > pos.x )
1940         {
1941             return item;
1942         }
1943     }
1944
1945     // to the right of the last menu item
1946     return -1;
1947 }
1948
1949 // ----------------------------------------------------------------------------
1950 // wxMenuBar menu operations
1951 // ----------------------------------------------------------------------------
1952
1953 void wxMenuBar::SelectMenu(size_t pos)
1954 {
1955     SetFocus();
1956     wxLogTrace(wxT("mousecapture"), wxT("Capturing mouse from wxMenuBar::SelectMenu"));
1957     CaptureMouse();
1958
1959     DoSelectMenu(pos);
1960 }
1961
1962 void wxMenuBar::DoSelectMenu(size_t pos)
1963 {
1964     wxCHECK_RET( pos < GetCount(), wxT("invalid menu index in DoSelectMenu") );
1965
1966     int posOld = m_current;
1967
1968     m_current = pos;
1969
1970     if ( posOld != -1 )
1971     {
1972         // close the previous menu
1973         if ( IsShowingMenu() )
1974         {
1975             // restore m_shouldShowMenu flag after DismissMenu() which resets
1976             // it to false
1977             bool old = m_shouldShowMenu;
1978
1979             DismissMenu();
1980
1981             m_shouldShowMenu = old;
1982         }
1983
1984         RefreshItem((size_t)posOld);
1985     }
1986
1987     RefreshItem(pos);
1988 }
1989
1990 void wxMenuBar::PopupMenu(size_t pos)
1991 {
1992     wxCHECK_RET( pos < GetCount(), wxT("invalid menu index in PopupCurrentMenu") );
1993
1994     SetFocus();
1995     DoSelectMenu(pos);
1996     PopupCurrentMenu();
1997 }
1998
1999 // ----------------------------------------------------------------------------
2000 // wxMenuBar input handing
2001 // ----------------------------------------------------------------------------
2002
2003 /*
2004    Note that wxMenuBar doesn't use wxInputHandler but handles keyboard and
2005    mouse in the same way under all platforms. This is because it doesn't derive
2006    from wxControl (which works with input handlers) but directly from wxWindow.
2007
2008    Also, menu bar input handling is rather simple, so maybe it's not really
2009    worth making it themeable - at least I've decided against doing it now as it
2010    would merging the changes back into trunk more difficult. But it still could
2011    be done later if really needed.
2012  */
2013
2014 void wxMenuBar::OnKillFocus(wxFocusEvent& event)
2015 {
2016     if ( m_current != -1 )
2017     {
2018         RefreshItem((size_t)m_current);
2019
2020         m_current = -1;
2021     }
2022
2023     event.Skip();
2024 }
2025
2026 void wxMenuBar::OnLeftDown(wxMouseEvent& event)
2027 {
2028     if ( HasCapture() )
2029     {
2030         OnDismiss();
2031
2032         event.Skip();
2033     }
2034     else // we didn't have mouse capture, capture it now
2035     {
2036         m_current = GetMenuFromPoint(event.GetPosition());
2037         if ( m_current == -1 )
2038         {
2039             // unfortunately, we can't prevent wxMSW from giving us the focus,
2040             // so we can only give it back
2041             GiveAwayFocus();
2042         }
2043         else // on item
2044         {
2045             wxLogTrace(wxT("mousecapture"), wxT("Capturing mouse from wxMenuBar::OnLeftDown"));
2046             CaptureMouse();
2047
2048             // show it as selected
2049             RefreshItem((size_t)m_current);
2050
2051             // show the menu
2052             PopupCurrentMenu(false /* don't select first item - as Windows does */);
2053         }
2054     }
2055 }
2056
2057 void wxMenuBar::OnMouseMove(wxMouseEvent& event)
2058 {
2059     if ( HasCapture() )
2060     {
2061         (void)ProcessMouseEvent(event.GetPosition());
2062     }
2063     else
2064     {
2065         event.Skip();
2066     }
2067 }
2068
2069 bool wxMenuBar::ProcessMouseEvent(const wxPoint& pt)
2070 {
2071     // a hack to ignore the extra mouse events MSW sends us: this is similar to
2072     // wxUSE_MOUSEEVENT_HACK in wxWin itself but it isn't enough for us here as
2073     // we get the messages from different windows (old and new popup menus for
2074     // example)
2075 #ifdef __WXMSW__
2076     static wxPoint s_ptLast;
2077     if ( pt == s_ptLast )
2078     {
2079         return false;
2080     }
2081
2082     s_ptLast = pt;
2083 #endif // __WXMSW__
2084
2085     int currentNew = GetMenuFromPoint(pt);
2086     if ( (currentNew == -1) || (currentNew == m_current) )
2087     {
2088         return false;
2089     }
2090
2091     // select the new active item
2092     DoSelectMenu(currentNew);
2093
2094     // show the menu if we know that we should, even if we hadn't been showing
2095     // it before (this may happen if the previous menu was disabled)
2096     if ( m_shouldShowMenu && !m_menuShown)
2097     {
2098         // open the new menu if the old one we closed had been opened
2099         PopupCurrentMenu(false /* don't select first item - as Windows does */);
2100     }
2101
2102     return true;
2103 }
2104
2105 void wxMenuBar::OnKeyDown(wxKeyEvent& event)
2106 {
2107     // ensure that we have a current item - we might not have it if we're
2108     // given the focus with Alt or F10 press (and under GTK+ the menubar
2109     // somehow gets the keyboard events even when it doesn't have focus...)
2110     if ( m_current == -1 )
2111     {
2112         if ( !HasCapture() )
2113         {
2114             SelectMenu(0);
2115         }
2116         else // we do have capture
2117         {
2118             // we always maintain a valid current item while we're in modal
2119             // state (i.e. have the capture)
2120             wxFAIL_MSG( wxT("how did we manage to lose current item?") );
2121
2122             return;
2123         }
2124     }
2125
2126     int key = event.GetKeyCode();
2127
2128     // first let the menu have it
2129     if ( IsShowingMenu() && m_menuShown->ProcessKeyDown(key) )
2130     {
2131         return;
2132     }
2133
2134     // cycle through the menu items when left/right arrows are pressed and open
2135     // the menu when up/down one is
2136     switch ( key )
2137     {
2138         case WXK_ALT:
2139             // Alt must be processed at wxWindow level too
2140             event.Skip();
2141             // fall through
2142
2143         case WXK_ESCAPE:
2144             // remove the selection and give the focus away
2145             if ( m_current != -1 )
2146             {
2147                 if ( IsShowingMenu() )
2148                 {
2149                     DismissMenu();
2150                 }
2151
2152                 OnDismiss();
2153             }
2154             break;
2155
2156         case WXK_LEFT:
2157         case WXK_RIGHT:
2158             {
2159                 size_t count = GetCount();
2160                 if ( count == 1 )
2161                 {
2162                     // the item won't change anyhow
2163                     break;
2164                 }
2165                 //else: otherwise, it will
2166
2167                 // remember if we were showing a menu - if we did, we should
2168                 // show the new menu after changing the item
2169                 bool wasMenuOpened = IsShowingMenu();
2170                 if ( wasMenuOpened )
2171                 {
2172                     DismissMenu();
2173                 }
2174
2175                 // cast is safe as we tested for -1 above
2176                 size_t currentNew = (size_t)m_current;
2177
2178                 if ( key == WXK_LEFT )
2179                 {
2180                     if ( currentNew-- == 0 )
2181                         currentNew = count - 1;
2182                 }
2183                 else // right
2184                 {
2185                     if ( ++currentNew == count )
2186                         currentNew = 0;
2187                 }
2188
2189                 DoSelectMenu(currentNew);
2190
2191                 if ( wasMenuOpened )
2192                 {
2193                     PopupCurrentMenu();
2194                 }
2195             }
2196             break;
2197
2198         case WXK_DOWN:
2199         case WXK_UP:
2200         case WXK_RETURN:
2201             // open the menu
2202             PopupCurrentMenu();
2203             break;
2204
2205         default:
2206             // letters open the corresponding menu
2207             {
2208                 bool unique;
2209                 int idxFound = FindNextItemForAccel(m_current, key, &unique);
2210
2211                 if ( idxFound != -1 )
2212                 {
2213                     if ( IsShowingMenu() )
2214                     {
2215                         DismissMenu();
2216                     }
2217
2218                     DoSelectMenu((size_t)idxFound);
2219
2220                     // if the item is not unique, just select it but don't
2221                     // activate as the user might have wanted to activate
2222                     // another item
2223                     //
2224                     // also, don't try to open a disabled menu
2225                     if ( unique && IsEnabledTop((size_t)idxFound) )
2226                     {
2227                         // open the menu
2228                         PopupCurrentMenu();
2229                     }
2230
2231                     // skip the "event.Skip()" below
2232                     break;
2233                 }
2234             }
2235
2236             event.Skip();
2237     }
2238 }
2239
2240 // ----------------------------------------------------------------------------
2241 // wxMenuBar accel handling
2242 // ----------------------------------------------------------------------------
2243
2244 int wxMenuBar::FindNextItemForAccel(int idxStart, int key, bool *unique) const
2245 {
2246     if ( !wxIsalnum((wxChar)key) )
2247     {
2248         // we only support letters/digits as accels
2249         return -1;
2250     }
2251
2252     // do we have more than one item with this accel?
2253     if ( unique )
2254         *unique = true;
2255
2256     // translate everything to lower case before comparing
2257     wxChar chAccel = (wxChar)wxTolower(key);
2258
2259     // the index of the item with this accel
2260     int idxFound = -1;
2261
2262     // loop through all items searching for the item with this
2263     // accel starting at the item after the current one
2264     int count = GetCount();
2265     int n = idxStart == -1 ? 0 : idxStart + 1;
2266
2267     if ( n == count )
2268     {
2269         // wrap
2270         n = 0;
2271     }
2272
2273     idxStart = n;
2274     for ( ;; )
2275     {
2276         const wxMenuInfo& info = m_menuInfos[n];
2277
2278         int idxAccel = info.GetAccelIndex();
2279         if ( idxAccel != -1 &&
2280              (wxChar)wxTolower(info.GetLabel()[(size_t)idxAccel]) == chAccel )
2281         {
2282             // ok, found an item with this accel
2283             if ( idxFound == -1 )
2284             {
2285                 // store it but continue searching as we need to
2286                 // know if it's the only item with this accel or if
2287                 // there are more
2288                 idxFound = n;
2289             }
2290             else // we already had found such item
2291             {
2292                 if ( unique )
2293                     *unique = false;
2294
2295                 // no need to continue further, we won't find
2296                 // anything we don't already know
2297                 break;
2298             }
2299         }
2300
2301         // we want to iterate over all items wrapping around if
2302         // necessary
2303         if ( ++n == count )
2304         {
2305             // wrap
2306             n = 0;
2307         }
2308
2309         if ( n == idxStart )
2310         {
2311             // we've seen all items
2312             break;
2313         }
2314     }
2315
2316     return idxFound;
2317 }
2318
2319 #if wxUSE_ACCEL
2320
2321 bool wxMenuBar::ProcessAccelEvent(const wxKeyEvent& event)
2322 {
2323     size_t n = 0;
2324     for ( wxMenuList::compatibility_iterator node = m_menus.GetFirst();
2325           node;
2326           node = node->GetNext(), n++ )
2327     {
2328         // accels of the items in the disabled menus shouldn't work
2329         if ( m_menuInfos[n].IsEnabled() )
2330         {
2331             if ( node->GetData()->ProcessAccelEvent(event) )
2332             {
2333                 // menu processed it
2334                 return true;
2335             }
2336         }
2337     }
2338
2339     // not found
2340     return false;
2341 }
2342
2343 #endif // wxUSE_ACCEL
2344
2345 // ----------------------------------------------------------------------------
2346 // wxMenuBar menus showing
2347 // ----------------------------------------------------------------------------
2348
2349 void wxMenuBar::PopupCurrentMenu(bool selectFirst)
2350 {
2351     wxCHECK_RET( m_current != -1, wxT("no menu to popup") );
2352
2353     // forgot to call DismissMenu()?
2354     wxASSERT_MSG( !m_menuShown, wxT("shouldn't show two menus at once!") );
2355
2356     // in any case, we should show it - even if we won't
2357     m_shouldShowMenu = true;
2358
2359     if ( IsEnabledTop(m_current) )
2360     {
2361         // remember the menu we show
2362         m_menuShown = GetMenu(m_current);
2363
2364         // we don't show the menu at all if it has no items
2365         if ( !m_menuShown->IsEmpty() )
2366         {
2367             // position it correctly: note that we must use screen coords and
2368             // that we pass 0 as width to position the menu exactly below the
2369             // item, not to the right of it
2370             wxRect rectItem = GetItemRect(m_current);
2371
2372             m_menuShown->Popup(ClientToScreen(rectItem.GetPosition()),
2373                                wxSize(0, rectItem.GetHeight()),
2374                                selectFirst);
2375         }
2376         else
2377         {
2378             // reset it back as no menu is shown
2379             m_menuShown = NULL;
2380         }
2381     }
2382     //else: don't show disabled menu
2383 }
2384
2385 void wxMenuBar::DismissMenu()
2386 {
2387     wxCHECK_RET( m_menuShown, wxT("can't dismiss menu if none is shown") );
2388
2389     m_menuShown->Dismiss();
2390     OnDismissMenu();
2391 }
2392
2393 void wxMenuBar::OnDismissMenu(bool dismissMenuBar)
2394 {
2395     m_shouldShowMenu = false;
2396     m_menuShown = NULL;
2397     if ( dismissMenuBar )
2398     {
2399         OnDismiss();
2400     }
2401 }
2402
2403 void wxMenuBar::OnDismiss()
2404 {
2405     if ( ReleaseMouseCapture() )
2406     {
2407         wxLogTrace(wxT("mousecapture"), wxT("Releasing mouse from wxMenuBar::OnDismiss"));
2408     }
2409
2410     if ( m_current != -1 )
2411     {
2412         size_t current = m_current;
2413         m_current = -1;
2414
2415         RefreshItem(current);
2416     }
2417
2418     GiveAwayFocus();
2419 }
2420
2421 bool wxMenuBar::ReleaseMouseCapture()
2422 {
2423 #ifdef __WXX11__
2424     // With wxX11, when a menu is closed by clicking away from it, a control
2425     // under the click will still get an event, even though the menu has the
2426     // capture (bug?). So that control may already have taken the capture by
2427     // this point, preventing us from releasing the menu's capture. So to work
2428     // around this, we release both captures, then put back the control's
2429     // capture.
2430     wxWindow *capture = GetCapture();
2431     if ( capture )
2432     {
2433         capture->ReleaseMouse();
2434
2435         if ( capture == this )
2436             return true;
2437
2438         bool had = HasCapture();
2439
2440         if ( had )
2441             ReleaseMouse();
2442
2443         capture->CaptureMouse();
2444
2445         return had;
2446     }
2447 #else
2448     if ( HasCapture() )
2449     {
2450         ReleaseMouse();
2451         return true;
2452     }
2453 #endif
2454     return false;
2455 }
2456
2457 void wxMenuBar::GiveAwayFocus()
2458 {
2459     GetFrame()->SetFocus();
2460 }
2461
2462 // ----------------------------------------------------------------------------
2463 // popup menu support
2464 // ----------------------------------------------------------------------------
2465
2466 wxEventLoop *wxWindow::ms_evtLoopPopup = NULL;
2467
2468 bool wxWindow::DoPopupMenu(wxMenu *menu, int x, int y)
2469 {
2470     wxCHECK_MSG( !ms_evtLoopPopup, false,
2471                  wxT("can't show more than one popup menu at a time") );
2472
2473 #ifdef __WXMSW__
2474     // we need to change the cursor before showing the menu as, apparently, no
2475     // cursor changes took place while the mouse is captured
2476     wxCursor cursorOld = GetCursor();
2477     SetCursor(wxCURSOR_ARROW);
2478 #endif // __WXMSW__
2479
2480 #if 0
2481     // flash any delayed log messages before showing the menu, otherwise it
2482     // could be dismissed (because it would lose focus) immediately after being
2483     // shown
2484     wxLog::FlushActive();
2485
2486     // some controls update themselves from OnIdle() call - let them do it
2487     wxTheApp->ProcessIdle();
2488
2489     // if the window hadn't been refreshed yet, the menu can adversely affect
2490     // its next OnPaint() handler execution - i.e. scrolled window refresh
2491     // logic breaks then as it scrolls part of the menu which hadn't been there
2492     // when the update event was generated into view
2493     Update();
2494 #endif // 0
2495
2496     menu->Popup(ClientToScreen(wxPoint(x, y)), wxSize(0,0));
2497
2498     // this is not very useful if the menu was popped up because of the mouse
2499     // click but I think it is nice to do when it appears because of a key
2500     // press (i.e. Windows menu key)
2501     //
2502     // Windows itself doesn't do it, but IMHO this is nice
2503     WarpPointer(x, y);
2504
2505     // we have to redirect all keyboard input to the menu temporarily
2506     PushEventHandler(new wxMenuKbdRedirector(menu));
2507
2508     // enter the local modal loop
2509     ms_evtLoopPopup = new wxEventLoop;
2510     ms_evtLoopPopup->Run();
2511
2512     wxDELETE(ms_evtLoopPopup);
2513
2514     // remove the handler
2515     PopEventHandler(true /* delete it */);
2516
2517 #ifdef __WXMSW__
2518     SetCursor(cursorOld);
2519 #endif // __WXMSW__
2520
2521     return true;
2522 }
2523
2524 void wxWindow::DismissPopupMenu()
2525 {
2526     wxCHECK_RET( ms_evtLoopPopup, wxT("no popup menu shown") );
2527
2528     ms_evtLoopPopup->Exit();
2529 }
2530
2531 #endif // wxUSE_MENUS