menu.cpp

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/////////////////////////////////////////////////////////////////////////////
// Name:        src/palmos/menu.cpp
// Purpose:     wxMenu, wxMenuBar, wxMenuItem
// Author:      William Osborne - minimal working wxPalmOS port
// Modified by:
// Created:     10/12/04
// RCS-ID:      $Id: menu.cpp,v 1.6 2005/07/01 19:36:56 ABX Exp $
// Copyright:   (c) William Osborne
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

// ===========================================================================
// declarations
// ===========================================================================

// ---------------------------------------------------------------------------
// headers
// ---------------------------------------------------------------------------

#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
    #pragma implementation "menu.h"
#endif

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#if wxUSE_MENUS

#ifndef WX_PRECOMP
    #include "wx/frame.h"
    #include "wx/menu.h"
    #include "wx/utils.h"
    #include "wx/intl.h"
    #include "wx/log.h"
#endif

#if wxUSE_OWNER_DRAWN
    #include "wx/ownerdrw.h"
#endif

#include <Loader.h>
#include <Form.h>
#include <Menu.h>

// ----------------------------------------------------------------------------
// global variables
// ----------------------------------------------------------------------------

extern wxMenu *wxCurrentPopupMenu;

// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------

// the (popup) menu title has this special id
static const int idMenuTitle = -3;

// ----------------------------------------------------------------------------
// private functions
// ----------------------------------------------------------------------------

// ============================================================================
// implementation
// ============================================================================

#include <wx/listimpl.cpp>

WX_DEFINE_LIST( wxMenuInfoList ) ;

#if wxUSE_EXTENDED_RTTI

WX_DEFINE_FLAGS( wxMenuStyle )

wxBEGIN_FLAGS( wxMenuStyle )
    wxFLAGS_MEMBER(wxMENU_TEAROFF)
wxEND_FLAGS( wxMenuStyle )

IMPLEMENT_DYNAMIC_CLASS_XTI(wxMenu, wxEvtHandler,"wx/menu.h")

wxCOLLECTION_TYPE_INFO( wxMenuItem * , wxMenuItemList ) ;

template<> void wxCollectionToVariantArray( wxMenuItemList const &theList, wxxVariantArray &value)
{
    wxListCollectionToVariantArray<wxMenuItemList::compatibility_iterator>( theList , value ) ;
}

wxBEGIN_PROPERTIES_TABLE(wxMenu)
    wxEVENT_PROPERTY( Select , wxEVT_COMMAND_MENU_SELECTED , wxCommandEvent)
    wxPROPERTY( Title, wxString , SetTitle, GetTitle, wxString(), 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
    wxREADONLY_PROPERTY_FLAGS( MenuStyle , wxMenuStyle , long , GetStyle , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
    wxPROPERTY_COLLECTION( MenuItems , wxMenuItemList , wxMenuItem* , Append , GetMenuItems , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
wxEND_PROPERTIES_TABLE()

wxBEGIN_HANDLERS_TABLE(wxMenu)
wxEND_HANDLERS_TABLE()

wxDIRECT_CONSTRUCTOR_2( wxMenu , wxString , Title , long , MenuStyle  )

WX_DEFINE_FLAGS( wxMenuBarStyle )

wxBEGIN_FLAGS( wxMenuBarStyle )
    wxFLAGS_MEMBER(wxMB_DOCKABLE)
wxEND_FLAGS( wxMenuBarStyle )

// the negative id would lead the window (its superclass !) to vetoe streaming out otherwise
bool wxMenuBarStreamingCallback( const wxObject *WXUNUSED(object), wxWriter * , wxPersister * , wxxVariantArray & )
{
    return true ;
}

IMPLEMENT_DYNAMIC_CLASS_XTI_CALLBACK(wxMenuBar, wxWindow ,"wx/menu.h",wxMenuBarStreamingCallback)

IMPLEMENT_DYNAMIC_CLASS_XTI(wxMenuInfo, wxObject , "wx/menu.h" )

wxBEGIN_PROPERTIES_TABLE(wxMenuInfo)
    wxREADONLY_PROPERTY( Menu , wxMenu* , GetMenu , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
    wxREADONLY_PROPERTY( Title , wxString , GetTitle , wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
wxEND_PROPERTIES_TABLE()

wxBEGIN_HANDLERS_TABLE(wxMenuInfo)
wxEND_HANDLERS_TABLE()

wxCONSTRUCTOR_2( wxMenuInfo , wxMenu* , Menu , wxString , Title )

wxCOLLECTION_TYPE_INFO( wxMenuInfo * , wxMenuInfoList ) ;

template<> void wxCollectionToVariantArray( wxMenuInfoList const &theList, wxxVariantArray &value)
{
    wxListCollectionToVariantArray<wxMenuInfoList::compatibility_iterator>( theList , value ) ;
}

wxBEGIN_PROPERTIES_TABLE(wxMenuBar)
    wxPROPERTY_COLLECTION( MenuInfos , wxMenuInfoList , wxMenuInfo* , Append , GetMenuInfos , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
wxEND_PROPERTIES_TABLE()

wxBEGIN_HANDLERS_TABLE(wxMenuBar)
wxEND_HANDLERS_TABLE()

wxCONSTRUCTOR_DUMMY( wxMenuBar )

#else
IMPLEMENT_DYNAMIC_CLASS(wxMenu, wxEvtHandler)
IMPLEMENT_DYNAMIC_CLASS(wxMenuBar, wxWindow)
IMPLEMENT_DYNAMIC_CLASS(wxMenuInfo, wxObject)
#endif

const wxMenuInfoList& wxMenuBar::GetMenuInfos() const
{
    wxMenuInfoList* list = const_cast< wxMenuInfoList* >( &m_menuInfos ) ;
    WX_CLEAR_LIST( wxMenuInfoList , *list ) ;
    for( size_t i = 0 ; i < GetMenuCount() ; ++i )
    {
        wxMenuInfo* info = new wxMenuInfo() ;
        info->Create( const_cast<wxMenuBar*>(this)->GetMenu(i) , GetLabelTop(i) ) ;
        list->Append( info ) ;
    }
    return m_menuInfos ;
}

// ---------------------------------------------------------------------------
// wxMenu construction, adding and removing menu items
// ---------------------------------------------------------------------------

// Construct a menu with optional title (then use append)
void wxMenu::Init()
{
}

// The wxWindow destructor will take care of deleting the submenus.
wxMenu::~wxMenu()
{
}

void wxMenu::Break()
{
}

void wxMenu::Attach(wxMenuBarBase *menubar)
{
    wxMenuBase::Attach(menubar);
}

#if wxUSE_ACCEL

int wxMenu::FindAccel(int id) const
{
    return wxNOT_FOUND;
}

void wxMenu::UpdateAccel(wxMenuItem *item)
{
}

#endif // wxUSE_ACCEL

// append a new item or submenu to the menu
bool wxMenu::DoInsertOrAppend(wxMenuItem *pItem, size_t pos)
{
    if ( IsAttached() && GetMenuBar()->IsAttached() )
    {
        // Regenerate the menu resource
        GetMenuBar()->Refresh();
    }

    return true;
}

void wxMenu::EndRadioGroup()
{
}

wxMenuItem* wxMenu::DoAppend(wxMenuItem *item)
{
    wxCHECK_MSG( item, NULL, _T("NULL item in wxMenu::DoAppend") );

    if(!wxMenuBase::DoAppend(item) || !DoInsertOrAppend(item))
    {
        return NULL;
    }
    else if(IsAttached() && GetMenuBar()->IsAttached())
    {
        // Regenerate the menu resource
        GetMenuBar()->Refresh();
    }

    return item;
}

wxMenuItem* wxMenu::DoInsert(size_t pos, wxMenuItem *item)
{
    if (wxMenuBase::DoInsert(pos, item) && DoInsertOrAppend(item, pos))
        return item;
    else
        return NULL;
}

wxMenuItem *wxMenu::DoRemove(wxMenuItem *item)
{
    // we need to find the items position in the child list
    size_t pos;
    wxMenuItemList::compatibility_iterator node = GetMenuItems().GetFirst();
    for ( pos = 0; node; pos++ )
    {
        if ( node->GetData() == item )
            break;

        node = node->GetNext();
    }

    // DoRemove() (unlike Remove) can only be called for existing item!
    wxCHECK_MSG( node, NULL, wxT("bug in wxMenu::Remove logic") );

    // remove the item from the menu
    wxMenuItem *ret=wxMenuBase::DoRemove(item);

    if ( IsAttached() && GetMenuBar()->IsAttached() )
    {
        // Regenerate the menu resource
        GetMenuBar()->Refresh();
    }

    return ret;
}

// ---------------------------------------------------------------------------
// accelerator helpers
// ---------------------------------------------------------------------------

#if wxUSE_ACCEL

// create the wxAcceleratorEntries for our accels and put them into provided
// array - return the number of accels we have
size_t wxMenu::CopyAccels(wxAcceleratorEntry *accels) const
{
    size_t count = GetAccelCount();
    for ( size_t n = 0; n < count; n++ )
    {
        *accels++ = *m_accels[n];
    }

    return count;
}

#endif // wxUSE_ACCEL

// ---------------------------------------------------------------------------
// set wxMenu title
// ---------------------------------------------------------------------------

void wxMenu::SetTitle(const wxString& label)
{
    m_title = label;

    if ( IsAttached() && GetMenuBar()->IsAttached() )
    {
        // Regenerate the menu resource
        GetMenuBar()->Refresh();
    }
}

// ---------------------------------------------------------------------------
// event processing
// ---------------------------------------------------------------------------

bool wxMenu::PalmCommand(WXUINT WXUNUSED(param), WXWORD id)
{
    return false;
}

// ---------------------------------------------------------------------------
// other
// ---------------------------------------------------------------------------

wxWindow *wxMenu::GetWindow() const
{
    return NULL;
}

// ---------------------------------------------------------------------------
// Menu Bar
// ---------------------------------------------------------------------------

void wxMenuBar::Init()
{
}

wxMenuBar::wxMenuBar()
{
}

wxMenuBar::wxMenuBar( long WXUNUSED(style) )
{
}

wxMenuBar::wxMenuBar(size_t count, wxMenu *menus[], const wxString titles[], long WXUNUSED(style))
{
}

wxMenuBar::~wxMenuBar()
{
}

// ---------------------------------------------------------------------------
// wxMenuBar helpers
// ---------------------------------------------------------------------------

void wxMenuBar::Refresh()
{
    wxCHECK_RET( IsAttached(), wxT("can't refresh unattached menubar") );

       // Regenerate the menu resource
    LoadMenu();
}

WXHMENU wxMenuBar::Create()
{
    return NULL;
}

int wxMenuBar::PalmPositionForWxMenu(wxMenu *menu, int wxpos)
{
    return -1;
}

// ---------------------------------------------------------------------------
// wxMenuBar functions to work with the top level submenus
// ---------------------------------------------------------------------------

void wxMenuBar::EnableTop(size_t pos, bool enable)
{
    // Palm OS does not have support for grayed or disabled items