src/gtk/menu.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        menu.cpp
// Purpose:
// Author:      Robert Roebling
// Id:          $Id$
// Copyright:   (c) 1998 Robert Roebling
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation "menu.h"
#pragma implementation "menuitem.h"
#endif

#include "wx/menu.h"
#include "wx/log.h"
#include "wx/intl.h"
#include "wx/app.h"

#include "gdk/gdk.h"
#include "gtk/gtk.h"

//-----------------------------------------------------------------------------
// wxMenuBar
//-----------------------------------------------------------------------------

IMPLEMENT_DYNAMIC_CLASS(wxMenuBar,wxWindow)

wxMenuBar::wxMenuBar( long style )
{
    m_needParent = FALSE; // hmmm

    PreCreation( (wxWindow *) NULL, -1, wxDefaultPosition, wxDefaultSize, 0, "menu" );

    m_menus.DeleteContents( TRUE );

    m_menubar = gtk_menu_bar_new();

    if (style & wxMB_DOCKABLE)
    {
        m_widget = gtk_handle_box_new();
        gtk_container_add( GTK_CONTAINER(m_widget), GTK_WIDGET(m_menubar) );
        gtk_widget_show( GTK_WIDGET(m_menubar) );
    }
    else
    {
        m_widget = GTK_WIDGET(m_menubar);
    }

    PostCreation();

    Show( TRUE );
}

wxMenuBar::wxMenuBar()
{
    m_needParent = FALSE; // hmmm

    PreCreation( (wxWindow *) NULL, -1, wxDefaultPosition, wxDefaultSize, 0, "menu" );

    m_menus.DeleteContents( TRUE );

    m_menubar = gtk_menu_bar_new();

    m_widget = GTK_WIDGET(m_menubar);

    PostCreation();

    Show( TRUE );
}

void wxMenuBar::Append( wxMenu *menu, const wxString &title )
{
    m_menus.Append( menu );

    wxString s = "";
    for ( const char *pc = title; *pc != '\0'; pc++ )
    {
        if (*pc == '&')
	{
	    pc++; /* skip it */
#if (GTK_MINOR_VERSION > 0)
    //      s << '_';  not yet
#endif
        }
        s << *pc;
    }

    menu->SetTitle(s);
    menu->m_owner = gtk_menu_item_new_with_label( WXSTRINGCAST(s) );
    gtk_widget_show( menu->m_owner );
    gtk_menu_item_set_submenu( GTK_MENU_ITEM(menu->m_owner), menu->m_menu );

    gtk_menu_bar_append( GTK_MENU_BAR(m_menubar), menu->m_owner );
}

static int FindMenuItemRecursive( const wxMenu *menu, const wxString &menuString, const wxString &itemString )
{
    if (menu->GetTitle() == menuString)
    {
        int res = menu->FindItem( itemString );
        if (res != wxNOT_FOUND)
            return res;
    }

    wxNode *node = ((wxMenu *)menu)->GetItems().First();    // const_cast
    while (node)
    {
        wxMenuItem *item = (wxMenuItem*)node->Data();
        if (item->IsSubMenu())
            return FindMenuItemRecursive(item->GetSubMenu(), menuString, itemString);

        node = node->Next();
    }

    return wxNOT_FOUND;
}

wxMenuItem *wxMenuBar::FindItemForId(int itemId, wxMenu **menuForItem = NULL) const
{
    if ( menuForItem )
    {
        // TODO return the pointer to the menu

        *menuForItem = NULL;
    }

    return FindItem(itemId);
}

int wxMenuBar::FindMenuItem( const wxString &menuString, const wxString &itemString ) const
{
    wxNode *node = m_menus.First();
    while (node)
    {
        wxMenu *menu = (wxMenu*)node->Data();
        int res = FindMenuItemRecursive( menu, menuString, itemString);
        if (res != -1) return res;
        node = node->Next();
    }
    return -1;
}

// Find a wxMenuItem using its id. Recurses down into sub-menus
static wxMenuItem* FindMenuItemByIdRecursive(const wxMenu* menu, int id)
{
    wxMenuItem* result = menu->FindItem(id);

    wxNode *node = ((wxMenu *)menu)->GetItems().First(); // const_cast
    while ( node && result == NULL )
    {
        wxMenuItem *item = (wxMenuItem*)node->Data();
        if (item->IsSubMenu())
        {
            result = FindMenuItemByIdRecursive( item->GetSubMenu(), id );
        }
        node = node->Next();
    }

    return result;
}

wxMenuItem* wxMenuBar::FindItem( int id ) const
{
    wxMenuItem* result = 0;
    wxNode *node = m_menus.First();
    while (node && result == 0)
    {
        wxMenu *menu = (wxMenu*)node->Data();
        result = FindMenuItemByIdRecursive( menu, id );
        node = node->Next();
    }

    return result;
}

void wxMenuBar::Check( int id, bool check )
{
    wxMenuItem* item = FindMenuItemById( id );

    wxCHECK_RET( item, "wxMenuBar::Check: no such item" );

    item->Check(check);
}

bool wxMenuBar::IsChecked( int id ) const
{
    wxMenuItem* item = FindMenuItemById( id );

    wxCHECK_MSG( item, FALSE, "wxMenuBar::IsChecked: no such item" );

    return item->IsChecked();
}

void wxMenuBar::Enable( int id, bool enable )
{
    wxMenuItem* item = FindMenuItemById( id );

    wxCHECK_RET( item, "wxMenuBar::Enable: no such item" );

    item->Enable(enable);
}

bool wxMenuBar::IsEnabled( int id ) const
{
    wxMenuItem* item = FindMenuItemById( id );

    wxCHECK_MSG( item, FALSE, "wxMenuBar::IsEnabled: no such item" );

    return item->IsEnabled();
}

wxString wxMenuBar::GetLabel( int id ) const
{
    wxMenuItem* item = FindMenuItemById( id );

    wxCHECK_MSG( item, "", "wxMenuBar::GetLabel: no such item" );

    return item->GetText();
}

void wxMenuBar::SetLabel( int id, const wxString &label )
{
    wxMenuItem* item = FindMenuItemById( id );

    wxCHECK_RET( item, "wxMenuBar::SetLabel: no such item" );

    item->SetText( label );
}

void wxMenuBar::EnableTop( int pos, bool flag )
{
    wxNode *node = m_menus.Nth( pos );

    wxCHECK_RET( node, "menu not found" );

    wxMenu* menu = (wxMenu*)node->Data();

    if (menu->m_owner)
        gtk_widget_set_sensitive( menu->m_owner, flag );
}

wxString wxMenuBar::GetLabelTop( int pos ) const
{
    wxNode *node = m_menus.Nth( pos );

    wxCHECK_MSG( node, "invalid", "menu not found" );

    wxMenu* menu = (wxMenu*)node->Data();

    return menu->GetTitle();
}

void wxMenuBar::SetLabelTop( int pos, const wxString& label )
{
    wxNode *node = m_menus.Nth( pos );

    wxCHECK_RET( node, "menu not found" );

    wxMenu* menu = (wxMenu*)node->Data();

    menu->SetTitle( label );
}

void wxMenuBar::SetHelpString( int id, const wxString& helpString )
{
    wxMenuItem* item = FindMenuItemById( id );

    wxCHECK_RET( item, "wxMenuBar::SetHelpString: no such item" );

    item->SetHelp( helpString );
}

wxString wxMenuBar::GetHelpString( int id ) const
{
    wxMenuItem* item = FindMenuItemById( id );

    wxCHECK_MSG( item, "", "wxMenuBar::GetHelpString: no such item" );

    return item->GetHelp();
}

//-----------------------------------------------------------------------------
// "activate"
//-----------------------------------------------------------------------------

static void gtk_menu_clicked_callback( GtkWidget *widget, wxMenu *menu )
{
    int id = menu->FindMenuIdByMenuItem(widget);

    /* should find it for normal (not popup) menu */
    wxASSERT( (id != -1) || (menu->GetInvokingWindow() != NULL) );

    if (!menu->IsEnabled(id))
        return;

    wxMenuItem* item = menu->FindItem( id );
    wxCHECK_RET( item, "error in menu item callback" );

    if (item->IsCheckable())
    {
        if (item->GetCheckedFlag() == item->IsChecked())
        {
            /* the menu item has been checked by calling wxMenuItem->Check() */
            return;
        }
        else
        {
            /* the user pressed on the menu item -> report */
            item->SetCheckedFlag(item->IsChecked());  /* make consistent again */
        }
    }

    wxCommandEvent event( wxEVT_COMMAND_MENU_SELECTED, id );
    event.SetEventObject( menu );
    event.SetInt(id );

    if (menu->GetCallback())
    {
        (void) (*(menu->GetCallback())) (*menu, event);
        return;
    }

    if (menu->GetEventHandler()->ProcessEvent(event))
        return;

    wxWindow *win = menu->GetInvokingWindow();
    if (win)
        win->GetEventHandler()->ProcessEvent( event );
}

//-----------------------------------------------------------------------------
// "select"
//-----------------------------------------------------------------------------

static void gtk_menu_hilight_callback( GtkWidget *widget, wxMenu *menu )
{
    int id = menu->FindMenuIdByMenuItem(widget);

    wxASSERT( id != -1 ); // should find it!

    if (!menu->IsEnabled(id))
        return;

    wxMenuEvent event( wxEVT_MENU_HIGHLIGHT, id );
    event.SetEventObject( menu );

/*   wxMSW doesn't call callback here either

     if (menu->m_callback)
     {
        (void) (*(menu->m_callback)) (*menu, event);
        return;
     }
*/

    if (menu->GetEventHandler()->ProcessEvent(event))
        return;

    wxWindow *win = menu->GetInvokingWindow();
    if (win) win->GetEventHandler()->ProcessEvent( event );
}

//-----------------------------------------------------------------------------
// "deselect"
//-----------------------------------------------------------------------------

static void gtk_menu_nolight_callback( GtkWidget *widget, wxMenu *menu )
{
    int id = menu->FindMenuIdByMenuItem(widget);

    wxASSERT( id != -1 ); // should find it!

    if (!menu->IsEnabled(id))
        return;

    wxMenuEvent event( wxEVT_MENU_HIGHLIGHT, -1 );
    event.SetEventObject( menu );

    if (menu->GetEventHandler()->ProcessEvent(event))
        return;

    wxWindow *win = menu->GetInvokingWindow();
    if (win)
        win->GetEventHandler()->ProcessEvent( event );
}

//-----------------------------------------------------------------------------
// wxMenuItem
//-----------------------------------------------------------------------------

IMPLEMENT_DYNAMIC_CLASS(wxMenuItem,wxObject)

wxMenuItem::wxMenuItem()
{
    m_id = ID_SEPARATOR;
    m_isCheckMenu = FALSE;
    m_isChecked = FALSE;
    m_isEnabled = TRUE;
    m_subMenu = (wxMenu *) NULL;
    m_menuItem = (GtkWidget *) NULL;
}

// it's valid for this function to be called even if m_menuItem == NULL
void wxMenuItem::SetName( const wxString& str )
{
    m_text = "";
    for ( const char *pc = str; *pc != '\0'; pc++ )
    {
        if (*pc == '&')
	{
	    pc++; /* skip it */
#if (GTK_MINOR_VERSION > 0)
            m_text << '_';
#endif
        }
        m_text << *pc;
    }

    if (m_menuItem)
    {
        GtkLabel *label = GTK_LABEL( GTK_BIN(m_menuItem)->child );
        gtk_label_set( label, m_text.c_str());
    }
}

void wxMenuItem::Check( bool check )
{
    wxCHECK_RET( m_menuItem, "invalid menu item" );

    wxCHECK_RET( IsCheckable(), "Can't check uncheckable item!" )

    if (check == m_isChecked) return;

    m_isChecked = check;
    gtk_check_menu_item_set_state( (GtkCheckMenuItem*)m_menuItem, (gint)check );
}

void wxMenuItem::Enable( bool enable )
{
    wxCHECK_RET( m_menuItem, "invalid menu item" );

    gtk_widget_set_sensitive( m_menuItem, enable );
    m_isEnabled = enable;
}

bool wxMenuItem::IsChecked() const
{
    wxCHECK_MSG( m_menuItem, FALSE, "invalid menu item" );

    wxCHECK( IsCheckable(), FALSE ); // can't get state of uncheckable item!

    bool bIsChecked = ((GtkCheckMenuItem*)m_menuItem)->active != 0;

    return bIsChecked;
}

//-----------------------------------------------------------------------------
// wxMenu
//-----------------------------------------------------------------------------

IMPLEMENT_DYNAMIC_CLASS(wxMenu,wxEvtHandler)

wxMenu::wxMenu( const wxString& title, const wxFunction func )
{
    m_title = title;
    m_items.DeleteContents( TRUE );
    m_invokingWindow = (wxWindow *) NULL;

#if (GTK_MINOR_VERSION > 0)
    m_accel = gtk_accel_group_new();
    m_factory = gtk_item_factory_new( GTK_TYPE_MENU, "<main>", m_accel );
    m_menu = gtk_item_factory_get_widget( m_factory, "<main>" );
#else
    m_menu = gtk_menu_new();  // Do not show!
#endif

    m_callback = func;
    m_eventHandler = this;
    m_clientData = (void*) NULL;

    if (m_title.IsNull()) m_title = "";
    if (m_title != "")
    {
        Append(-2, m_title);
        AppendSeparator();
    }

    m_owner = (GtkWidget*) NULL;
}

wxMenu::~wxMenu()
{
    /* how do we delete an item-factory ? */
}

void wxMenu::SetTitle( const wxString& title )
{
    // TODO Waiting for something better
    m_title = title;
}

const wxString wxMenu::GetTitle() const
{
    return m_title;
}

void wxMenu::AppendSeparator()
{
    wxMenuItem *mitem = new wxMenuItem();
    mitem->SetId(ID_SEPARATOR);

    GtkWidget *menuItem = gtk_menu_item_new();
    gtk_menu_append( GTK_MENU(m_menu), menuItem );
    gtk_widget_show( menuItem );

    mitem->SetMenuItem(menuItem);
    m_items.Append( mitem );
}

void wxMenu::Append( int id, const wxString &item, const wxString &helpStr, bool checkable )
{
    wxMenuItem *mitem = new wxMenuItem();
    mitem->SetId(id);
    mitem->SetText(item);
    mitem->SetHelp(helpStr);
    mitem->SetCheckable(checkable);
    const char *text = mitem->GetText();

#if (GTK_MINOR_VERSION > 0)
    char buf[100];
    strcpy( buf, "/" );
    strcat( buf, text );

    GtkItemFactoryEntry entry;
    entry.path = buf;
    entry.accelerator = (gchar*) NULL;
    entry.callback = (GtkItemFactoryCallback) gtk_menu_clicked_callback;
    entry.callback_action = 0;
    if (checkable)
        entry.item_type = "<CheckItem>";
    else
        entry.item_type = "<Item>";

    gtk_item_factory_create_item( m_factory, &entry, (gpointer) this, 2 );  /* what is 2 ? */

    /* in order to get the pointer to the item we need the item text _without_ underscores */
    wxString s = "<main>/";
    for ( const char *pc = text; *pc != '\0'; pc++ )
    {
        if (*pc == '_') pc++; /* skip it */
        s << *pc;
    }

    GtkWidget *menuItem = gtk_item_factory_get_item( m_factory, s );

#else

    GtkWidget *menuItem = checkable ? gtk_check_menu_item_new_with_label(text)
                                    : gtk_menu_item_new_with_label(text);

    gtk_signal_connect( GTK_OBJECT(menuItem), "activate",
                        GTK_SIGNAL_FUNC(gtk_menu_clicked_callback),
                        (gpointer)this );

    gtk_menu_append( GTK_MENU(m_menu), menuItem );
    gtk_widget_show( menuItem );

#endif

    gtk_signal_connect( GTK_OBJECT(menuItem), "select",
                        GTK_SIGNAL_FUNC(gtk_menu_hilight_callback),
                        (gpointer)this );

    gtk_signal_connect( GTK_OBJECT(menuItem), "deselect",
                        GTK_SIGNAL_FUNC(gtk_menu_nolight_callback),
                        (gpointer)this );

    mitem->SetMenuItem(menuItem);

    m_items.Append( mitem );
}

void wxMenu::Append( int id, const wxString &text, wxMenu *subMenu, const wxString &helpStr )
{
    wxMenuItem *mitem = new wxMenuItem();
    mitem->SetId(id);
    mitem->SetText(text);
    mitem->SetHelp(helpStr);

    GtkWidget *menuItem = gtk_menu_item_new_with_label(mitem->GetText());
    mitem->SetMenuItem(menuItem);
    mitem->SetSubMenu(subMenu);

    gtk_signal_connect( GTK_OBJECT(menuItem), "select",
                        GTK_SIGNAL_FUNC(gtk_menu_hilight_callback),
                        (gpointer*)this );

    gtk_signal_connect( GTK_OBJECT(menuItem), "deselect",
                        GTK_SIGNAL_FUNC(gtk_menu_nolight_callback),
                        (gpointer*)this );

    gtk_menu_item_set_submenu( GTK_MENU_ITEM(menuItem), subMenu->m_menu );
    gtk_menu_append( GTK_MENU(m_menu), menuItem );
    gtk_widget_show( menuItem );
    m_items.Append( mitem );
}

void wxMenu::Append( wxMenuItem *item )
{
    m_items.Append( item );

    GtkWidget *menuItem = (GtkWidget*) NULL;

    if (item->IsSeparator())
        menuItem = gtk_menu_item_new();
    else if (item->IsSubMenu())
        menuItem = gtk_menu_item_new_with_label(item->GetText());
    else
        menuItem = item->IsCheckable() ? gtk_check_menu_item_new_with_label(item->GetText())
                                       : gtk_menu_item_new_with_label(item->GetText());

    if (!item->IsSeparator())
    {
        gtk_signal_connect( GTK_OBJECT(menuItem), "select",
                            GTK_SIGNAL_FUNC(gtk_menu_hilight_callback),
                            (gpointer*)this );

        gtk_signal_connect( GTK_OBJECT(menuItem), "deselect",
                            GTK_SIGNAL_FUNC(gtk_menu_nolight_callback),
                            (gpointer*)this );

        if (!item->IsSubMenu())
        {
            gtk_signal_connect( GTK_OBJECT(menuItem), "activate",
                                GTK_SIGNAL_FUNC(gtk_menu_clicked_callback),
                                (gpointer*)this );
        }
    }

    gtk_menu_append( GTK_MENU(m_menu), menuItem );
    gtk_widget_show( menuItem );
    item->SetMenuItem(menuItem);
}

int wxMenu::FindItem( const wxString itemString ) const
{
    wxString s = "";
    for ( const char *pc = itemString; *pc != '\0'; pc++ )
    {
        if (*pc == '&')
	{
	    pc++; /* skip it */
#if (GTK_MINOR_VERSION > 0)
            s << '_';
#endif
        }
        s << *pc;
    }

    wxNode *node = m_items.First();
    while (node)
    {
        wxMenuItem *item = (wxMenuItem*)node->Data();
        if (item->GetText() == s)
        {
            return item->GetId();
        }
        node = node->Next();
    }

    return wxNOT_FOUND;
}

void wxMenu::Enable( int id, bool enable )
{
    wxMenuItem *item = FindItem(id);

    wxCHECK_RET( item, "wxMenu::Enable: no such item" );

    item->Enable(enable);
}

bool wxMenu::IsEnabled( int id ) const
{
    wxMenuItem *item = FindItem(id);

    wxCHECK_MSG( item, FALSE, "wxMenu::IsEnabled: no such item" );

    return item->IsEnabled();
}

void wxMenu::Check( int id, bool enable )
{
    wxMenuItem *item = FindItem(id);

    wxCHECK_RET( item, "wxMenu::Check: no such item" );

    item->Check(enable);
}

bool wxMenu::IsChecked( int id ) const
{
    wxMenuItem *item = FindItem(id);

    wxCHECK_MSG( item, FALSE, "wxMenu::IsChecked: no such item" );

    return item->IsChecked();
}

void wxMenu::SetLabel( int id, const wxString &label )
{
    wxMenuItem *item = FindItem(id);

    wxCHECK_RET( item, "wxMenu::SetLabel: no such item" );

    item->SetText(label);
}

wxString wxMenu::GetLabel( int id ) const
{
    wxMenuItem *item = FindItem(id);

    wxCHECK_MSG( item, "", "wxMenu::GetLabel: no such item" );

    return item->GetText();
}

void wxMenu::SetHelpString( int id, const wxString& helpString )
{
    wxMenuItem *item = FindItem(id);

    wxCHECK_RET( item, "wxMenu::SetHelpString: no such item" );

    item->SetHelp( helpString );
}

wxString wxMenu::GetHelpString( int id ) const
{
    wxMenuItem *item = FindItem(id);

    wxCHECK_MSG( item, "", "wxMenu::GetHelpString: no such item" );

    return item->GetHelp();
}

int wxMenu::FindMenuIdByMenuItem( GtkWidget *menuItem ) const
{
    wxNode *node = m_items.First();
    while (node)
    {
        wxMenuItem *item = (wxMenuItem*)node->Data();
        if (item->GetMenuItem() == menuItem)
           return item->GetId();
        node = node->Next();
    }

    return wxNOT_FOUND;
}

wxMenuItem *wxMenu::FindItem(int id) const
{
    wxNode *node = m_items.First();
    while (node)
    {
        wxMenuItem *item = (wxMenuItem*)node->Data();
        if (item->GetId() == id)
        {
            return item;
        }
        node = node->Next();
    }

    /* Not finding anything here can be correct
     * when search the entire menu system for
     * an entry -> no error message. */

    return (wxMenuItem *) NULL;
}

void wxMenu::SetInvokingWindow( wxWindow *win )
{
    m_invokingWindow = win;
}

wxWindow *wxMenu::GetInvokingWindow()
{
    return m_invokingWindow;
}

// Update a menu and all submenus recursively. source is the object that has
// the update event handlers defined for it. If NULL, the menu or associated
// window will be used.
void wxMenu::UpdateUI(wxEvtHandler* source)
{
  if (!source && GetInvokingWindow())
    source = GetInvokingWindow()->GetEventHandler();
  if (!source)
    source = GetEventHandler();
  if (!source)
    source = this;

  wxNode* node = GetItems().First();
  while (node)
  {
    wxMenuItem* item = (wxMenuItem*) node->Data();
    if ( !item->IsSeparator() )
    {
      wxWindowID id = item->GetId();
      wxUpdateUIEvent event(id);
      event.SetEventObject( source );

      if (source->ProcessEvent(event))
      {
        if (event.GetSetText())
          SetLabel(id, event.GetText());
        if (event.GetSetChecked())
          Check(id, event.GetChecked());
        if (event.GetSetEnabled())
          Enable(id, event.GetEnabled());
      }

      if (item->GetSubMenu())
        item->GetSubMenu()->UpdateUI(source);
    }
    node = node->Next();
  }
}
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: menu.cpp
	3	// Purpose:
	4	// Author: Robert Roebling
	5	// Id: $Id$
	6	// Copyright: (c) 1998 Robert Roebling
	7	// Licence: wxWindows licence
	8	/////////////////////////////////////////////////////////////////////////////
	9
	10	#ifdef __GNUG__
	11	#pragma implementation "menu.h"
	12	#pragma implementation "menuitem.h"
	13	#endif
	14
	15	#include "wx/menu.h"
	16	#include "wx/log.h"
	17	#include "wx/intl.h"
	18	#include "wx/app.h"
	19
	20	#include "gdk/gdk.h"
	21	#include "gtk/gtk.h"
	22
	23	//-----------------------------------------------------------------------------
	24	// wxMenuBar
	25	//-----------------------------------------------------------------------------
	26
	27	IMPLEMENT_DYNAMIC_CLASS(wxMenuBar,wxWindow)
	28
	29	wxMenuBar::wxMenuBar( long style )
	30	{
	31	m_needParent = FALSE; // hmmm
	32
	33	PreCreation( (wxWindow *) NULL, -1, wxDefaultPosition, wxDefaultSize, 0, "menu" );
	34
	35	m_menus.DeleteContents( TRUE );
	36
	37	m_menubar = gtk_menu_bar_new();
	38
	39	if (style & wxMB_DOCKABLE)
	40	{
	41	m_widget = gtk_handle_box_new();
	42	gtk_container_add( GTK_CONTAINER(m_widget), GTK_WIDGET(m_menubar) );
	43	gtk_widget_show( GTK_WIDGET(m_menubar) );
	44	}
	45	else
	46	{
	47	m_widget = GTK_WIDGET(m_menubar);
	48	}
	49
	50	PostCreation();
	51
	52	Show( TRUE );
	53	}
	54
	55	wxMenuBar::wxMenuBar()
	56	{
	57	m_needParent = FALSE; // hmmm
	58
	59	PreCreation( (wxWindow *) NULL, -1, wxDefaultPosition, wxDefaultSize, 0, "menu" );
	60
	61	m_menus.DeleteContents( TRUE );
	62
	63	m_menubar = gtk_menu_bar_new();
	64
	65	m_widget = GTK_WIDGET(m_menubar);
	66
	67	PostCreation();
	68
	69	Show( TRUE );
	70	}
	71
	72	void wxMenuBar::Append( wxMenu *menu, const wxString &title )
	73	{
	74	m_menus.Append( menu );
	75
	76	wxString s = "";
	77	for ( const char pc = title; pc != '\0'; pc++ )
	78	{
	79	if (*pc == '&')
	80	{
	81	pc++; /* skip it */
	82	#if (GTK_MINOR_VERSION > 0)
	83	// s << '_'; not yet
	84	#endif
	85	}
	86	s << *pc;
	87	}
	88
	89	menu->SetTitle(s);
	90	menu->m_owner = gtk_menu_item_new_with_label( WXSTRINGCAST(s) );
	91	gtk_widget_show( menu->m_owner );
	92	gtk_menu_item_set_submenu( GTK_MENU_ITEM(menu->m_owner), menu->m_menu );
	93
	94	gtk_menu_bar_append( GTK_MENU_BAR(m_menubar), menu->m_owner );
	95	}
	96
	97	static int FindMenuItemRecursive( const wxMenu *menu, const wxString &menuString, const wxString &itemString )
	98	{
	99	if (menu->GetTitle() == menuString)
	100	{
	101	int res = menu->FindItem( itemString );
	102	if (res != wxNOT_FOUND)
	103	return res;
	104	}
	105
	106	wxNode node = ((wxMenu )menu)->GetItems().First(); // const_cast
	107	while (node)
	108	{
	109	wxMenuItem item = (wxMenuItem)node->Data();
	110	if (item->IsSubMenu())
	111	return FindMenuItemRecursive(item->GetSubMenu(), menuString, itemString);
	112
	113	node = node->Next();
	114	}
	115
	116	return wxNOT_FOUND;
	117	}
	118
	119	wxMenuItem wxMenuBar::FindItemForId(int itemId, wxMenu *menuForItem = NULL) const
	120	{
	121	if ( menuForItem )
	122	{
	123	// TODO return the pointer to the menu
	124
	125	*menuForItem = NULL;
	126	}
	127
	128	return FindItem(itemId);
	129	}
	130
	131	int wxMenuBar::FindMenuItem( const wxString &menuString, const wxString &itemString ) const
	132	{
	133	wxNode *node = m_menus.First();
	134	while (node)
	135	{
	136	wxMenu menu = (wxMenu)node->Data();
	137	int res = FindMenuItemRecursive( menu, menuString, itemString);
	138	if (res != -1) return res;
	139	node = node->Next();
	140	}
	141	return -1;
	142	}
	143
	144	// Find a wxMenuItem using its id. Recurses down into sub-menus
	145	static wxMenuItem* FindMenuItemByIdRecursive(const wxMenu* menu, int id)
	146	{
	147	wxMenuItem* result = menu->FindItem(id);
	148
	149	wxNode node = ((wxMenu )menu)->GetItems().First(); // const_cast
	150	while ( node && result == NULL )
	151	{
	152	wxMenuItem item = (wxMenuItem)node->Data();
	153	if (item->IsSubMenu())
	154	{
	155	result = FindMenuItemByIdRecursive( item->GetSubMenu(), id );
	156	}
	157	node = node->Next();
	158	}
	159
	160	return result;
	161	}
	162
	163	wxMenuItem* wxMenuBar::FindItem( int id ) const
	164	{
	165	wxMenuItem* result = 0;
	166	wxNode *node = m_menus.First();
	167	while (node && result == 0)
	168	{
	169	wxMenu menu = (wxMenu)node->Data();
	170	result = FindMenuItemByIdRecursive( menu, id );
	171	node = node->Next();
	172	}
	173
	174	return result;
	175	}
	176
	177	void wxMenuBar::Check( int id, bool check )
	178	{
	179	wxMenuItem* item = FindMenuItemById( id );
	180
	181	wxCHECK_RET( item, "wxMenuBar::Check: no such item" );
	182
	183	item->Check(check);
	184	}
	185
	186	bool wxMenuBar::IsChecked( int id ) const
	187	{
	188	wxMenuItem* item = FindMenuItemById( id );
	189
	190	wxCHECK_MSG( item, FALSE, "wxMenuBar::IsChecked: no such item" );
	191
	192	return item->IsChecked();
	193	}
	194
	195	void wxMenuBar::Enable( int id, bool enable )
	196	{
	197	wxMenuItem* item = FindMenuItemById( id );
	198
	199	wxCHECK_RET( item, "wxMenuBar::Enable: no such item" );
	200
	201	item->Enable(enable);
	202	}
	203
	204	bool wxMenuBar::IsEnabled( int id ) const
	205	{
	206	wxMenuItem* item = FindMenuItemById( id );
	207
	208	wxCHECK_MSG( item, FALSE, "wxMenuBar::IsEnabled: no such item" );
	209
	210	return item->IsEnabled();
	211	}
	212
	213	wxString wxMenuBar::GetLabel( int id ) const
	214	{
	215	wxMenuItem* item = FindMenuItemById( id );
	216
	217	wxCHECK_MSG( item, "", "wxMenuBar::GetLabel: no such item" );
	218
	219	return item->GetText();
	220	}
	221
	222	void wxMenuBar::SetLabel( int id, const wxString &label )
	223	{
	224	wxMenuItem* item = FindMenuItemById( id );
	225
	226	wxCHECK_RET( item, "wxMenuBar::SetLabel: no such item" );
	227
	228	item->SetText( label );
	229	}
	230
	231	void wxMenuBar::EnableTop( int pos, bool flag )
	232	{
	233	wxNode *node = m_menus.Nth( pos );
	234
	235	wxCHECK_RET( node, "menu not found" );
	236
	237	wxMenu* menu = (wxMenu*)node->Data();
	238
	239	if (menu->m_owner)
	240	gtk_widget_set_sensitive( menu->m_owner, flag );
	241	}
	242
	243	wxString wxMenuBar::GetLabelTop( int pos ) const
	244	{
	245	wxNode *node = m_menus.Nth( pos );
	246
	247	wxCHECK_MSG( node, "invalid", "menu not found" );
	248
	249	wxMenu* menu = (wxMenu*)node->Data();
	250
	251	return menu->GetTitle();
	252	}
	253
	254	void wxMenuBar::SetLabelTop( int pos, const wxString& label )
	255	{
	256	wxNode *node = m_menus.Nth( pos );
	257
	258	wxCHECK_RET( node, "menu not found" );
	259
	260	wxMenu* menu = (wxMenu*)node->Data();
	261
	262	menu->SetTitle( label );
	263	}
	264
	265	void wxMenuBar::SetHelpString( int id, const wxString& helpString )
	266	{
	267	wxMenuItem* item = FindMenuItemById( id );
	268
	269	wxCHECK_RET( item, "wxMenuBar::SetHelpString: no such item" );
	270
	271	item->SetHelp( helpString );
	272	}
	273
	274	wxString wxMenuBar::GetHelpString( int id ) const
	275	{
	276	wxMenuItem* item = FindMenuItemById( id );
	277
	278	wxCHECK_MSG( item, "", "wxMenuBar::GetHelpString: no such item" );
	279
	280	return item->GetHelp();
	281	}
	282
	283	//-----------------------------------------------------------------------------
	284	// "activate"
	285	//-----------------------------------------------------------------------------
	286
	287	static void gtk_menu_clicked_callback( GtkWidget widget, wxMenu menu )
	288	{
	289	int id = menu->FindMenuIdByMenuItem(widget);
	290
	291	/* should find it for normal (not popup) menu */
	292	wxASSERT( (id != -1) \|\| (menu->GetInvokingWindow() != NULL) );
	293
	294	if (!menu->IsEnabled(id))
	295	return;
	296
	297	wxMenuItem* item = menu->FindItem( id );
	298	wxCHECK_RET( item, "error in menu item callback" );
	299
	300	if (item->IsCheckable())
	301	{
	302	if (item->GetCheckedFlag() == item->IsChecked())
	303	{
	304	/* the menu item has been checked by calling wxMenuItem->Check() */
	305	return;
	306	}
	307	else
	308	{
	309	/* the user pressed on the menu item -> report */
	310	item->SetCheckedFlag(item->IsChecked()); /* make consistent again */
	311	}
	312	}
	313
	314	wxCommandEvent event( wxEVT_COMMAND_MENU_SELECTED, id );
	315	event.SetEventObject( menu );
	316	event.SetInt(id );
	317
	318	if (menu->GetCallback())
	319	{
	320	(void) ((menu->GetCallback())) (menu, event);
	321	return;
	322	}
	323
	324	if (menu->GetEventHandler()->ProcessEvent(event))
	325	return;
	326
	327	wxWindow *win = menu->GetInvokingWindow();
	328	if (win)
	329	win->GetEventHandler()->ProcessEvent( event );
	330	}
	331
	332	//-----------------------------------------------------------------------------
	333	// "select"
	334	//-----------------------------------------------------------------------------
	335
	336	static void gtk_menu_hilight_callback( GtkWidget widget, wxMenu menu )
	337	{
	338	int id = menu->FindMenuIdByMenuItem(widget);
	339
	340	wxASSERT( id != -1 ); // should find it!
	341
	342	if (!menu->IsEnabled(id))
	343	return;
	344
	345	wxMenuEvent event( wxEVT_MENU_HIGHLIGHT, id );
	346	event.SetEventObject( menu );
	347
	348	/* wxMSW doesn't call callback here either
	349
	350	if (menu->m_callback)
	351	{
	352	(void) ((menu->m_callback)) (menu, event);
	353	return;
	354	}
	355	*/
	356
	357	if (menu->GetEventHandler()->ProcessEvent(event))
	358	return;
	359
	360	wxWindow *win = menu->GetInvokingWindow();
	361	if (win) win->GetEventHandler()->ProcessEvent( event );
	362	}
	363
	364	//-----------------------------------------------------------------------------
	365	// "deselect"
	366	//-----------------------------------------------------------------------------
	367
	368	static void gtk_menu_nolight_callback( GtkWidget widget, wxMenu menu )
	369	{
	370	int id = menu->FindMenuIdByMenuItem(widget);
	371
	372	wxASSERT( id != -1 ); // should find it!
	373
	374	if (!menu->IsEnabled(id))
	375	return;
	376
	377	wxMenuEvent event( wxEVT_MENU_HIGHLIGHT, -1 );
	378	event.SetEventObject( menu );
	379
	380	if (menu->GetEventHandler()->ProcessEvent(event))
	381	return;
	382
	383	wxWindow *win = menu->GetInvokingWindow();
	384	if (win)
	385	win->GetEventHandler()->ProcessEvent( event );
	386	}
	387
	388	//-----------------------------------------------------------------------------
	389	// wxMenuItem
	390	//-----------------------------------------------------------------------------
	391
	392	IMPLEMENT_DYNAMIC_CLASS(wxMenuItem,wxObject)
	393
	394	wxMenuItem::wxMenuItem()
	395	{
	396	m_id = ID_SEPARATOR;
	397	m_isCheckMenu = FALSE;
	398	m_isChecked = FALSE;
	399	m_isEnabled = TRUE;
	400	m_subMenu = (wxMenu *) NULL;
	401	m_menuItem = (GtkWidget *) NULL;
	402	}
	403
	404	// it's valid for this function to be called even if m_menuItem == NULL
	405	void wxMenuItem::SetName( const wxString& str )
	406	{
	407	m_text = "";
	408	for ( const char pc = str; pc != '\0'; pc++ )
	409	{
	410	if (*pc == '&')
	411	{
	412	pc++; /* skip it */
	413	#if (GTK_MINOR_VERSION > 0)
	414	m_text << '_';
	415	#endif
	416	}
	417	m_text << *pc;
	418	}
	419
	420	if (m_menuItem)
	421	{
	422	GtkLabel *label = GTK_LABEL( GTK_BIN(m_menuItem)->child );
	423	gtk_label_set( label, m_text.c_str());
	424	}
	425	}
	426
	427	void wxMenuItem::Check( bool check )
	428	{
	429	wxCHECK_RET( m_menuItem, "invalid menu item" );
	430
	431	wxCHECK_RET( IsCheckable(), "Can't check uncheckable item!" )
	432
	433	if (check == m_isChecked) return;
	434
	435	m_isChecked = check;
	436	gtk_check_menu_item_set_state( (GtkCheckMenuItem*)m_menuItem, (gint)check );
	437	}
	438
	439	void wxMenuItem::Enable( bool enable )
	440	{
	441	wxCHECK_RET( m_menuItem, "invalid menu item" );
	442
	443	gtk_widget_set_sensitive( m_menuItem, enable );
	444	m_isEnabled = enable;
	445	}
	446
	447	bool wxMenuItem::IsChecked() const
	448	{
	449	wxCHECK_MSG( m_menuItem, FALSE, "invalid menu item" );
	450
	451	wxCHECK( IsCheckable(), FALSE ); // can't get state of uncheckable item!
	452
	453	bool bIsChecked = ((GtkCheckMenuItem*)m_menuItem)->active != 0;
	454
	455	return bIsChecked;
	456	}
	457
	458	//-----------------------------------------------------------------------------
	459	// wxMenu
	460	//-----------------------------------------------------------------------------
	461
	462	IMPLEMENT_DYNAMIC_CLASS(wxMenu,wxEvtHandler)
	463
	464	wxMenu::wxMenu( const wxString& title, const wxFunction func )
	465	{
	466	m_title = title;
	467	m_items.DeleteContents( TRUE );
	468	m_invokingWindow = (wxWindow *) NULL;
	469
	470	#if (GTK_MINOR_VERSION > 0)
	471	m_accel = gtk_accel_group_new();
	472	m_factory = gtk_item_factory_new( GTK_TYPE_MENU, "<main>", m_accel );
	473	m_menu = gtk_item_factory_get_widget( m_factory, "<main>" );
	474	#else
	475	m_menu = gtk_menu_new(); // Do not show!
	476	#endif
	477
	478	m_callback = func;
	479	m_eventHandler = this;
	480	m_clientData = (void*) NULL;
	481
	482	if (m_title.IsNull()) m_title = "";
	483	if (m_title != "")
	484	{
	485	Append(-2, m_title);
	486	AppendSeparator();
	487	}
	488
	489	m_owner = (GtkWidget*) NULL;
	490	}
	491
	492	wxMenu::~wxMenu()
	493	{
	494	/* how do we delete an item-factory ? */
	495	}
	496
	497	void wxMenu::SetTitle( const wxString& title )
	498	{
	499	// TODO Waiting for something better
	500	m_title = title;
	501	}
	502
	503	const wxString wxMenu::GetTitle() const
	504	{
	505	return m_title;
	506	}
	507
	508	void wxMenu::AppendSeparator()
	509	{
	510	wxMenuItem *mitem = new wxMenuItem();
	511	mitem->SetId(ID_SEPARATOR);
	512
	513	GtkWidget *menuItem = gtk_menu_item_new();
	514	gtk_menu_append( GTK_MENU(m_menu), menuItem );
	515	gtk_widget_show( menuItem );
	516
	517	mitem->SetMenuItem(menuItem);
	518	m_items.Append( mitem );
	519	}
	520
	521	void wxMenu::Append( int id, const wxString &item, const wxString &helpStr, bool checkable )
	522	{
	523	wxMenuItem *mitem = new wxMenuItem();
	524	mitem->SetId(id);
	525	mitem->SetText(item);
	526	mitem->SetHelp(helpStr);
	527	mitem->SetCheckable(checkable);
	528	const char *text = mitem->GetText();
	529
	530	#if (GTK_MINOR_VERSION > 0)
	531	char buf[100];
	532	strcpy( buf, "/" );
	533	strcat( buf, text );
	534
	535	GtkItemFactoryEntry entry;
	536	entry.path = buf;
	537	entry.accelerator = (gchar*) NULL;
	538	entry.callback = (GtkItemFactoryCallback) gtk_menu_clicked_callback;
	539	entry.callback_action = 0;
	540	if (checkable)
	541	entry.item_type = "<CheckItem>";
	542	else
	543	entry.item_type = "<Item>";
	544
	545	gtk_item_factory_create_item( m_factory, &entry, (gpointer) this, 2 ); /* what is 2 ? */
	546
	547	/* in order to get the pointer to the item we need the item text _without_ underscores */
	548	wxString s = "<main>/";
	549	for ( const char pc = text; pc != '\0'; pc++ )
	550	{
	551	if (pc == '_') pc++; / skip it */
	552	s << *pc;
	553	}
	554
	555	GtkWidget *menuItem = gtk_item_factory_get_item( m_factory, s );
	556
	557	#else
	558
	559	GtkWidget *menuItem = checkable ? gtk_check_menu_item_new_with_label(text)
	560	: gtk_menu_item_new_with_label(text);
	561
	562	gtk_signal_connect( GTK_OBJECT(menuItem), "activate",
	563	GTK_SIGNAL_FUNC(gtk_menu_clicked_callback),
	564	(gpointer)this );
	565
	566	gtk_menu_append( GTK_MENU(m_menu), menuItem );
	567	gtk_widget_show( menuItem );
	568
	569	#endif
	570
	571	gtk_signal_connect( GTK_OBJECT(menuItem), "select",
	572	GTK_SIGNAL_FUNC(gtk_menu_hilight_callback),
	573	(gpointer)this );
	574
	575	gtk_signal_connect( GTK_OBJECT(menuItem), "deselect",
	576	GTK_SIGNAL_FUNC(gtk_menu_nolight_callback),
	577	(gpointer)this );
	578
	579	mitem->SetMenuItem(menuItem);
	580
	581	m_items.Append( mitem );
	582	}
	583
	584	void wxMenu::Append( int id, const wxString &text, wxMenu *subMenu, const wxString &helpStr )
	585	{
	586	wxMenuItem *mitem = new wxMenuItem();
	587	mitem->SetId(id);
	588	mitem->SetText(text);
	589	mitem->SetHelp(helpStr);
	590
	591	GtkWidget *menuItem = gtk_menu_item_new_with_label(mitem->GetText());
	592	mitem->SetMenuItem(menuItem);
	593	mitem->SetSubMenu(subMenu);
	594
	595	gtk_signal_connect( GTK_OBJECT(menuItem), "select",
	596	GTK_SIGNAL_FUNC(gtk_menu_hilight_callback),
	597	(gpointer*)this );
	598
	599	gtk_signal_connect( GTK_OBJECT(menuItem), "deselect",
	600	GTK_SIGNAL_FUNC(gtk_menu_nolight_callback),
	601	(gpointer*)this );
	602
	603	gtk_menu_item_set_submenu( GTK_MENU_ITEM(menuItem), subMenu->m_menu );
	604	gtk_menu_append( GTK_MENU(m_menu), menuItem );
	605	gtk_widget_show( menuItem );
	606	m_items.Append( mitem );
	607	}
	608
	609	void wxMenu::Append( wxMenuItem *item )
	610	{
	611	m_items.Append( item );
	612
	613	GtkWidget menuItem = (GtkWidget) NULL;
	614
	615	if (item->IsSeparator())
	616	menuItem = gtk_menu_item_new();
	617	else if (item->IsSubMenu())
	618	menuItem = gtk_menu_item_new_with_label(item->GetText());
	619	else
	620	menuItem = item->IsCheckable() ? gtk_check_menu_item_new_with_label(item->GetText())
	621	: gtk_menu_item_new_with_label(item->GetText());
	622
	623	if (!item->IsSeparator())
	624	{
	625	gtk_signal_connect( GTK_OBJECT(menuItem), "select",
	626	GTK_SIGNAL_FUNC(gtk_menu_hilight_callback),
	627	(gpointer*)this );
	628
	629	gtk_signal_connect( GTK_OBJECT(menuItem), "deselect",
	630	GTK_SIGNAL_FUNC(gtk_menu_nolight_callback),
	631	(gpointer*)this );
	632
	633	if (!item->IsSubMenu())
	634	{
	635	gtk_signal_connect( GTK_OBJECT(menuItem), "activate",
	636	GTK_SIGNAL_FUNC(gtk_menu_clicked_callback),
	637	(gpointer*)this );
	638	}
	639	}
	640
	641	gtk_menu_append( GTK_MENU(m_menu), menuItem );
	642	gtk_widget_show( menuItem );
	643	item->SetMenuItem(menuItem);
	644	}
	645
	646	int wxMenu::FindItem( const wxString itemString ) const
	647	{
	648	wxString s = "";
	649	for ( const char pc = itemString; pc != '\0'; pc++ )
	650	{
	651	if (*pc == '&')
	652	{
	653	pc++; /* skip it */
	654	#if (GTK_MINOR_VERSION > 0)
	655	s << '_';
	656	#endif
	657	}
	658	s << *pc;
	659	}
	660
	661	wxNode *node = m_items.First();
	662	while (node)
	663	{
	664	wxMenuItem item = (wxMenuItem)node->Data();
	665	if (item->GetText() == s)
	666	{
	667	return item->GetId();
	668	}
	669	node = node->Next();
	670	}
	671
	672	return wxNOT_FOUND;
	673	}
	674
	675	void wxMenu::Enable( int id, bool enable )
	676	{
	677	wxMenuItem *item = FindItem(id);
	678
	679	wxCHECK_RET( item, "wxMenu::Enable: no such item" );
	680
	681	item->Enable(enable);
	682	}
	683
	684	bool wxMenu::IsEnabled( int id ) const
	685	{
	686	wxMenuItem *item = FindItem(id);
	687
	688	wxCHECK_MSG( item, FALSE, "wxMenu::IsEnabled: no such item" );
	689
	690	return item->IsEnabled();
	691	}
	692
	693	void wxMenu::Check( int id, bool enable )
	694	{
	695	wxMenuItem *item = FindItem(id);
	696
	697	wxCHECK_RET( item, "wxMenu::Check: no such item" );
	698
	699	item->Check(enable);
	700	}
	701
	702	bool wxMenu::IsChecked( int id ) const
	703	{
	704	wxMenuItem *item = FindItem(id);
	705
	706	wxCHECK_MSG( item, FALSE, "wxMenu::IsChecked: no such item" );
	707
	708	return item->IsChecked();
	709	}
	710
	711	void wxMenu::SetLabel( int id, const wxString &label )
	712	{
	713	wxMenuItem *item = FindItem(id);
	714
	715	wxCHECK_RET( item, "wxMenu::SetLabel: no such item" );
	716
	717	item->SetText(label);
	718	}
	719
	720	wxString wxMenu::GetLabel( int id ) const
	721	{
	722	wxMenuItem *item = FindItem(id);
	723
	724	wxCHECK_MSG( item, "", "wxMenu::GetLabel: no such item" );
	725
	726	return item->GetText();
	727	}
	728
	729	void wxMenu::SetHelpString( int id, const wxString& helpString )
	730	{
	731	wxMenuItem *item = FindItem(id);
	732
	733	wxCHECK_RET( item, "wxMenu::SetHelpString: no such item" );
	734
	735	item->SetHelp( helpString );
	736	}
	737
	738	wxString wxMenu::GetHelpString( int id ) const
	739	{
	740	wxMenuItem *item = FindItem(id);
	741
	742	wxCHECK_MSG( item, "", "wxMenu::GetHelpString: no such item" );
	743
	744	return item->GetHelp();
	745	}
	746
	747	int wxMenu::FindMenuIdByMenuItem( GtkWidget *menuItem ) const
	748	{
	749	wxNode *node = m_items.First();
	750	while (node)
	751	{
	752	wxMenuItem item = (wxMenuItem)node->Data();
	753	if (item->GetMenuItem() == menuItem)
	754	return item->GetId();
	755	node = node->Next();
	756	}
	757
	758	return wxNOT_FOUND;
	759	}
	760
	761	wxMenuItem *wxMenu::FindItem(int id) const
	762	{
	763	wxNode *node = m_items.First();
	764	while (node)
	765	{
	766	wxMenuItem item = (wxMenuItem)node->Data();
	767	if (item->GetId() == id)
	768	{
	769	return item;
	770	}
	771	node = node->Next();
	772	}
	773
	774	/* Not finding anything here can be correct
	775	* when search the entire menu system for
	776	* an entry -> no error message. */
	777
	778	return (wxMenuItem *) NULL;
	779	}
	780
	781	void wxMenu::SetInvokingWindow( wxWindow *win )
	782	{
	783	m_invokingWindow = win;
	784	}
	785
	786	wxWindow *wxMenu::GetInvokingWindow()
	787	{
	788	return m_invokingWindow;
	789	}
	790
	791	// Update a menu and all submenus recursively. source is the object that has
	792	// the update event handlers defined for it. If NULL, the menu or associated
	793	// window will be used.
	794	void wxMenu::UpdateUI(wxEvtHandler* source)
	795	{
	796	if (!source && GetInvokingWindow())
	797	source = GetInvokingWindow()->GetEventHandler();
	798	if (!source)
	799	source = GetEventHandler();
	800	if (!source)
	801	source = this;
	802
	803	wxNode* node = GetItems().First();
	804	while (node)
	805	{
	806	wxMenuItem* item = (wxMenuItem*) node->Data();
	807	if ( !item->IsSeparator() )
	808	{
	809	wxWindowID id = item->GetId();
	810	wxUpdateUIEvent event(id);
	811	event.SetEventObject( source );
	812
	813	if (source->ProcessEvent(event))
	814	{
	815	if (event.GetSetText())
	816	SetLabel(id, event.GetText());
	817	if (event.GetSetChecked())
	818	Check(id, event.GetChecked());
	819	if (event.GetSetEnabled())
	820	Enable(id, event.GetEnabled());
	821	}
	822
	823	if (item->GetSubMenu())
	824	item->GetSubMenu()->UpdateUI(source);
	825	}
	826	node = node->Next();
	827	}
	828	}
	829