/////////////////////////////////////////////////////////////////////////////
// Name:        wx/xtixml.h
// Purpose:     xml streaming runtime metadata information (extended class info)
// Author:      Stefan Csomor
// Modified by: 
// Created:     27/07/03
// RCS-ID:      $Id$
// Copyright:   (c) 2003 Stefan Csomor
// Licence:     wxWidgets licence
/////////////////////////////////////////////////////////////////////////////

#ifndef _WX_XTIXMLH__
#define _WX_XTIXMLH__

#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma interface "xtixml.h"
#endif

#include "wx/wx.h"

#if wxUSE_EXTENDED_RTTI

#include "wx/xtistrm.h"

class WXDLLIMPEXP_XML wxXmlNode ;

class WXDLLIMPEXP_XML wxXmlWriter : public wxWriter
{
public :

    wxXmlWriter( wxXmlNode * parent ) ;
    ~wxXmlWriter() ;

    //
    // streaming callbacks
    //
    // these callbacks really write out the values in the stream format
    //

    //
    // streaming callbacks
    //
    // these callbacks really write out the values in the stream format

    // begins writing out a new toplevel entry which has the indicated unique name
    virtual void DoBeginWriteTopLevelEntry( const wxString &name )  ;

    // ends writing out a new toplevel entry which has the indicated unique name
    virtual void DoEndWriteTopLevelEntry( const wxString &name )  ;

    // start of writing an object having the passed in ID
    virtual void DoBeginWriteObject(const wxObject *object, const wxClassInfo *classInfo, int objectID , wxxVariantArray &metadata ) ;

    // end of writing an toplevel object name param is used for unique identification within the container
    virtual void DoEndWriteObject(const wxObject *object, const wxClassInfo *classInfo, int objectID ) ;

    // writes a simple property in the stream format
    virtual void DoWriteSimpleType( wxxVariant &value )  ;

    // start of writing a complex property into the stream (
    virtual void DoBeginWriteProperty( const wxPropertyInfo *propInfo )  ;

    // end of writing a complex property into the stream
    virtual void DoEndWriteProperty( const wxPropertyInfo *propInfo ) ;

    virtual void DoBeginWriteElement() ;
    virtual void DoEndWriteElement() ;

    // insert an object reference to an already written object 
    virtual void DoWriteRepeatedObject( int objectID )  ;

    // insert a null reference
    virtual void DoWriteNullObject()  ;

    // writes a delegate in the stream format
    virtual void DoWriteDelegate( const wxObject *object,  const wxClassInfo* classInfo , const wxPropertyInfo *propInfo , 
        const wxObject *eventSink , int sinkObjectID , const wxClassInfo* eventSinkClassInfo , const wxHandlerInfo* handlerIndo ) ;
private :
    struct wxXmlWriterInternal ;
    wxXmlWriterInternal* m_data ;
} ;

/*
wxXmlReader handles streaming in a class from XML
*/

class WXDLLIMPEXP_XML wxXmlReader : public wxReader
{
public:
    wxXmlReader(wxXmlNode *parent) { m_parent = parent ; }
    ~wxXmlReader() {}

    // Reads a component from XML.  The return value is the root object ID, which can
    // then be used to ask the depersister about that object

    virtual int ReadObject( const wxString &name , wxDepersister *depersist ) ;

private :
    int ReadComponent(wxXmlNode *parent, wxDepersister *callbacks);

    // read the content of this node (simple type) and return the corresponding value
    wxxVariant ReadValue(wxXmlNode *Node,
        const wxTypeInfo *type );

    wxXmlNode * m_parent ;
};

#endif // wxUSE_EXTENDED_RTTI

#endif