redistribution of code for different library parts
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@23142 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Stefan Csomor
455
src/common/xtixml.cpp
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455
src/common/xtixml.cpp
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/////////////////////////////////////////////////////////////////////////////
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// Name: src/common/xtistrm.cpp
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// Purpose: streaming runtime metadata information
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// Author: Stefan Csomor
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// Modified by:
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// Created: 27/07/03
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// RCS-ID: $Id$
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// Copyright: (c) 2003 Stefan Csomor
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
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#pragma implementation "xtistrm.h"
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#endif
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#ifndef WX_PRECOMP
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#include "wx/hash.h"
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#include "wx/object.h"
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#endif
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#include "wx/xml/xml.h"
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#include "wx/tokenzr.h"
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#include "wx/xtistrm.h"
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#include "wx/xtixml.h"
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#include "wx/txtstrm.h"
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#include "wx/event.h"
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#if wxUSE_EXTENDED_RTTI
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#include "wx/beforestd.h"
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#include <map>
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#include <vector>
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#include <string>
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#include "wx/afterstd.h"
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using namespace std ;
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//
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// XML Streaming
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//
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// convenience functions
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void wxXmlAddContentToNode( wxXmlNode* node , const wxString& data )
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{
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node->AddChild(new wxXmlNode(wxXML_TEXT_NODE, "value", data ) );
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}
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wxString wxXmlGetContentFromNode( wxXmlNode *node )
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{
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if ( node->GetChildren() )
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return node->GetChildren()->GetContent() ;
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else
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return wxEmptyString ;
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}
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struct wxXmlWriter::wxXmlWriterInternal
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{
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wxXmlNode *m_root ;
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wxXmlNode *m_current ;
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vector< wxXmlNode * > m_objectStack ;
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void Push( wxXmlNode *newCurrent )
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{
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m_objectStack.push_back( m_current ) ;
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m_current = newCurrent ;
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}
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void Pop()
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{
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m_current = m_objectStack.back() ;
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m_objectStack.pop_back() ;
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}
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} ;
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wxXmlWriter::wxXmlWriter( wxXmlNode * rootnode )
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{
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m_data = new wxXmlWriterInternal() ;
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m_data->m_root = rootnode ;
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m_data->m_current = rootnode ;
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}
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wxXmlWriter::~wxXmlWriter()
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{
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delete m_data ;
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}
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void wxXmlWriter::DoBeginWriteTopLevelEntry( const wxString &name )
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{
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wxXmlNode *pnode;
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pnode = new wxXmlNode(wxXML_ELEMENT_NODE, wxT("entry"));
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pnode->AddProperty(wxString("name"), name);
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m_data->m_current->AddChild(pnode) ;
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m_data->Push( pnode ) ;
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}
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void wxXmlWriter::DoEndWriteTopLevelEntry( const wxString &WXUNUSED(name) )
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{
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m_data->Pop() ;
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}
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void wxXmlWriter::DoBeginWriteObject(const wxObject *WXUNUSED(object), const wxClassInfo *classInfo, int objectID , wxxVariantArray &metadata )
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{
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wxXmlNode *pnode;
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pnode = new wxXmlNode(wxXML_ELEMENT_NODE, wxT("object"));
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pnode->AddProperty(wxT("class"), wxString(classInfo->GetClassName()));
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pnode->AddProperty(wxT("id"), wxString::Format( "%d" , objectID ) );
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for ( size_t i = 0 ; i < metadata.GetCount() ; ++i )
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{
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pnode->AddProperty( metadata[i].GetName() , metadata[i].GetAsString() ) ;
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}
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m_data->m_current->AddChild(pnode) ;
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m_data->Push( pnode ) ;
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}
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// end of writing the root object
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void wxXmlWriter::DoEndWriteObject(const wxObject *WXUNUSED(object), const wxClassInfo *WXUNUSED(classInfo), int WXUNUSED(objectID) )
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{
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m_data->Pop() ;
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}
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// writes a property in the stream format
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void wxXmlWriter::DoWriteSimpleType( wxxVariant &value )
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{
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wxXmlAddContentToNode( m_data->m_current ,value.GetAsString() ) ;
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}
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void wxXmlWriter::DoBeginWriteElement()
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{
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wxXmlNode *pnode;
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pnode = new wxXmlNode(wxXML_ELEMENT_NODE, "element" );
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m_data->m_current->AddChild(pnode) ;
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m_data->Push( pnode ) ;
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}
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void wxXmlWriter::DoEndWriteElement()
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{
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m_data->Pop() ;
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}
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void wxXmlWriter::DoBeginWriteProperty(const wxPropertyInfo *pi )
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{
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wxXmlNode *pnode;
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pnode = new wxXmlNode(wxXML_ELEMENT_NODE, "prop" );
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pnode->AddProperty(wxT("name"), pi->GetName() );
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m_data->m_current->AddChild(pnode) ;
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m_data->Push( pnode ) ;
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}
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void wxXmlWriter::DoEndWriteProperty(const wxPropertyInfo *WXUNUSED(propInfo) )
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{
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m_data->Pop() ;
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}
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// insert an object reference to an already written object
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void wxXmlWriter::DoWriteRepeatedObject( int objectID )
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{
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wxXmlNode *pnode;
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pnode = new wxXmlNode(wxXML_ELEMENT_NODE, wxT("object"));
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pnode->AddProperty(wxString("href"), wxString::Format( "%d" , objectID ) );
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m_data->m_current->AddChild(pnode) ;
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}
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// insert a null reference
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void wxXmlWriter::DoWriteNullObject()
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{
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wxXmlNode *pnode;
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pnode = new wxXmlNode(wxXML_ELEMENT_NODE, wxT("object"));
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m_data->m_current->AddChild(pnode) ;
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}
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// writes a delegate in the stream format
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void wxXmlWriter::DoWriteDelegate( const wxObject *WXUNUSED(object), const wxClassInfo* WXUNUSED(classInfo) , const wxPropertyInfo *WXUNUSED(pi) ,
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const wxObject *eventSink, int sinkObjectID , const wxClassInfo* WXUNUSED(eventSinkClassInfo) , const wxHandlerInfo* handlerInfo )
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{
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if ( eventSink != NULL && handlerInfo != NULL )
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{
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wxXmlAddContentToNode( m_data->m_current ,wxString::Format(wxT("%d.%s"), sinkObjectID , handlerInfo->GetName()) ) ;
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}
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}
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// ----------------------------------------------------------------------------
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// reading objects in
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// ----------------------------------------------------------------------------
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// ----------------------------------------------------------------------------
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// reading xml in
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// ----------------------------------------------------------------------------
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/*
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Reading components has not to be extended for components
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as properties are always sought by typeinfo over all levels
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and create params are always toplevel class only
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*/
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int wxXmlReader::ReadComponent(wxXmlNode *node, wxDepersister *callbacks)
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{
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wxASSERT_MSG( callbacks , wxT("Does not support reading without a Depersistor") ) ;
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wxString className;
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wxClassInfo *classInfo;
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wxxVariant *createParams ;
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int *createParamOids ;
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const wxClassInfo** createClassInfos ;
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wxXmlNode *children;
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int objectID;
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wxString ObjectIdString ;
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children = node->GetChildren();
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if (!children)
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{
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// check for a null object or href
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if (node->GetPropVal("href" , &ObjectIdString ) )
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{
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objectID = atoi( ObjectIdString.c_str() ) ;
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wxASSERT_MSG( HasObjectClassInfo( objectID ) , wxT("Forward hrefs are not supported") ) ;
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return objectID ;
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}
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if ( !node->GetPropVal("id" , &ObjectIdString ) )
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{
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return wxNullObjectID;
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}
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}
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if (!node->GetPropVal("class", &className))
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{
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// No class name. Eek. FIXME: error handling
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return wxInvalidObjectID;
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}
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classInfo = wxClassInfo::FindClass(className);
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wxASSERT_MSG( classInfo , wxString::Format(wxT("unknown class %s"),className ) ) ;
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wxASSERT_MSG( !children || children->GetType() != wxXML_TEXT_NODE , wxT("objects cannot have XML Text Nodes") ) ;
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if (!node->GetPropVal("id", &ObjectIdString))
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{
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wxASSERT_MSG(0,wxT("Objects must have an id attribute") ) ;
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// No object id. Eek. FIXME: error handling
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return wxInvalidObjectID;
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}
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objectID = atoi( ObjectIdString.c_str() ) ;
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// is this object already has been streamed in, return it here
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wxASSERT_MSG( !HasObjectClassInfo( objectID ) , wxString::Format(wxT("Doubly used id : %d"), objectID ) ) ;
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// new object, start with allocation
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// first make the object know to our internal registry
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SetObjectClassInfo( objectID , classInfo ) ;
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wxxVariantArray metadata ;
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wxXmlProperty *xp = node->GetProperties() ;
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while ( xp )
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{
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if ( xp->GetName() != wxString("class") && xp->GetName() != wxString("id") )
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{
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metadata.Add( new wxxVariant( xp->GetValue() , xp->GetName() ) ) ;
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}
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xp = xp->GetNext() ;
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}
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callbacks->AllocateObject(objectID, classInfo, metadata);
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//
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// stream back the Create parameters first
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createParams = new wxxVariant[ classInfo->GetCreateParamCount() ] ;
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createParamOids = new int[classInfo->GetCreateParamCount() ] ;
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createClassInfos = new const wxClassInfo*[classInfo->GetCreateParamCount() ] ;
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typedef map<string, wxXmlNode *> PropertyNodes ;
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typedef vector<string> PropertyNames ;
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PropertyNodes propertyNodes ;
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PropertyNames propertyNames ;
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while( children )
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{
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wxString name ;
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children->GetPropVal( wxT("name") , &name ) ;
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propertyNames.push_back( name.c_str() ) ;
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propertyNodes[name.c_str()] = children->GetChildren() ;
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children = children->GetNext() ;
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}
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for ( int i = 0 ; i <classInfo->GetCreateParamCount() ; ++i )
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{
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const wxChar* paramName = classInfo->GetCreateParamName(i) ;
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PropertyNodes::iterator propiter = propertyNodes.find( paramName ) ;
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const wxPropertyInfo* pi = classInfo->FindPropertyInfo( paramName ) ;
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wxASSERT_MSG(pi,wxString::Format("Unkown Property %s",paramName) ) ;
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// if we don't have the value of a create param set in the xml
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// we use the default value
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if ( propiter != propertyNodes.end() )
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{
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wxXmlNode* prop = propiter->second ;
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if ( pi->GetTypeInfo()->IsObjectType() )
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{
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createParamOids[i] = ReadComponent( prop , callbacks ) ;
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createClassInfos[i] = dynamic_cast<const wxClassTypeInfo*>(pi->GetTypeInfo())->GetClassInfo() ;
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}
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else
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{
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createParamOids[i] = wxInvalidObjectID ;
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createParams[i] = ReadValue( prop , pi->GetTypeInfo() ) ;
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if( pi->GetFlags() & wxPROP_ENUM_STORE_LONG )
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{
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const wxEnumTypeInfo *eti = dynamic_cast<const wxEnumTypeInfo*>( pi->GetTypeInfo() ) ;
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wxASSERT_MSG( eti , wxT("Type must have enum - long conversion") ) ;
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long realval ;
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eti->ConvertToLong( createParams[i] , realval ) ;
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createParams[i] = wxxVariant( realval ) ;
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}
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createClassInfos[i] = NULL ;
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}
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for ( size_t j = 0 ; j < propertyNames.size() ; ++j )
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{
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if ( propertyNames[j] == paramName )
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{
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propertyNames[j] = "" ;
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break ;
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}
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}
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}
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else
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{
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createParams[i] = pi->GetDefaultValue() ;
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}
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}
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// got the parameters. Call the Create method
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callbacks->CreateObject(objectID, classInfo,
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classInfo->GetCreateParamCount(),
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createParams, createParamOids, createClassInfos, metadata );
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// now stream in the rest of the properties, in the sequence their properties were written in the xml
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for ( size_t j = 0 ; j < propertyNames.size() ; ++j )
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{
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if ( propertyNames[j].length() )
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{
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PropertyNodes::iterator propiter = propertyNodes.find( propertyNames[j] ) ;
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if ( propiter != propertyNodes.end() )
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{
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wxXmlNode* prop = propiter->second ;
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const wxPropertyInfo* pi = classInfo->FindPropertyInfo( propertyNames[j].c_str() ) ;
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if ( pi->GetTypeInfo()->GetKind() == wxT_COLLECTION )
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{
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const wxCollectionTypeInfo* collType = dynamic_cast< const wxCollectionTypeInfo* >( pi->GetTypeInfo() ) ;
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const wxTypeInfo * elementType = collType->GetElementType() ;
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while( prop )
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{
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wxASSERT_MSG(prop->GetName() == wxT("element") , wxT("A non empty collection must consist of 'element' nodes")) ;
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wxXmlNode* elementContent = prop->GetChildren() ;
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if ( elementContent )
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{
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// we skip empty elements
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if ( elementType->IsObjectType() )
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{
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int valueId = ReadComponent( elementContent , callbacks ) ;
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if ( valueId != wxInvalidObjectID )
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{
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if ( pi->GetAccessor()->HasAdder() )
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callbacks->AddToPropertyCollectionAsObject( objectID , classInfo , pi , valueId ) ;
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// TODO for collections we must have a notation on taking over ownership or not
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if ( elementType->GetKind() == wxT_OBJECT && valueId != wxNullObjectID )
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callbacks->DestroyObject( valueId , GetObjectClassInfo( valueId ) ) ;
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}
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}
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else
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{
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wxxVariant elementValue = ReadValue( elementContent , elementType ) ;
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if ( pi->GetAccessor()->HasAdder() )
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callbacks->AddToPropertyCollection( objectID , classInfo ,pi , elementValue ) ;
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}
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}
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prop = prop->GetNext() ;
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}
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}
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else if ( pi->GetTypeInfo()->IsObjectType() )
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{
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int valueId = ReadComponent( prop , callbacks ) ;
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if ( valueId != wxInvalidObjectID )
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{
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callbacks->SetPropertyAsObject( objectID , classInfo , pi , valueId ) ;
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if ( pi->GetTypeInfo()->GetKind() == wxT_OBJECT && valueId != wxNullObjectID )
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callbacks->DestroyObject( valueId , GetObjectClassInfo( valueId ) ) ;
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}
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}
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else if ( pi->GetTypeInfo()->IsDelegateType() )
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{
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if ( prop )
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{
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wxString resstring = prop->GetContent() ;
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wxInt32 pos = resstring.Find('.') ;
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assert( pos != wxNOT_FOUND ) ;
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int sinkOid = atol(resstring.Left(pos)) ;
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wxString handlerName = resstring.Mid(pos+1) ;
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wxClassInfo* sinkClassInfo = GetObjectClassInfo( sinkOid ) ;
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callbacks->SetConnect( objectID , classInfo , dynamic_cast<const wxDelegateTypeInfo*>(pi->GetTypeInfo()) , sinkClassInfo ,
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sinkClassInfo->FindHandlerInfo(handlerName) , sinkOid ) ;
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}
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}
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else
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{
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wxxVariant nodeval ;
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callbacks->SetProperty( objectID, classInfo ,pi , ReadValue( prop , pi->GetTypeInfo() ) ) ;
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}
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}
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}
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}
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delete[] createParams ;
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delete[] createParamOids ;
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delete[] createClassInfos ;
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return objectID;
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}
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wxxVariant wxXmlReader::ReadValue(wxXmlNode *node,
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const wxTypeInfo *type )
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{
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wxString content ;
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if ( node )
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content = node->GetContent() ;
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wxxVariant result ;
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type->ConvertFromString( content , result ) ;
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return result ;
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}
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int wxXmlReader::ReadObject( const wxString &name , wxDepersister *callbacks)
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{
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wxXmlNode *iter = m_parent->GetChildren() ;
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while ( iter )
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{
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wxString entryName ;
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if ( iter->GetPropVal("name", &entryName) )
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{
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if ( entryName == name )
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return ReadComponent( iter->GetChildren() , callbacks ) ;
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}
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iter = iter->GetNext() ;
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}
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return wxInvalidObjectID ;
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}
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#endif
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