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