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xti expansions, streaming code changes

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@22710 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Stefan Csomor
2003-08-08 20:35:19 +00:00
parent 26f75f229b
commit aa8d7c2f9b
2 changed files with 135 additions and 88 deletions
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117
include/wx/xtistrm.h
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@@ -32,10 +32,122 @@ const int wxNullObjectID = -1 ;
// listed below.
/*
Main interface for streaming out an object to XML.
Main interfaces for streaming out objects.
*/
void WriteComponent(wxObject *Object, const wxClassInfo *ClassInfo, wxXmlNode *parent, const wxString& nodeName );
class wxPersister
{
public :
// will be called before a toplevel object is written, may veto even that (eg for objects that cannot be supported) by returning false
virtual bool BeforeWriteObject( const wxObject *WXUNUSED(object) , const wxClassInfo *WXUNUSED(classInfo) , const wxString &WXUNUSED(name)) { return true ; }
// will be called before a property gets written, may change the value , eg replace a concrete wxSize by wxSize( -1 , -1 ) or veto
// writing that property at all by returning false
virtual bool BeforeWriteProperty( const wxObject *WXUNUSED(object) , const wxClassInfo *WXUNUSED(classInfo) , const wxPropertyInfo *WXUNUSED(propInfo) , wxxVariant &WXUNUSED(value) ) { return true ; }
// will be called before a property with an object value gets written, may change the value , eg replace the instance, void it or veto
// writing that property at all by returning false
virtual bool BeforeWritePropertyAsObject( const wxObject *WXUNUSED(object) , const wxClassInfo *WXUNUSED(classInfo) , const wxPropertyInfo *WXUNUSED(propInfo) , wxxVariant &WXUNUSED(value) ) { return true ; }
// will be called before a delegate property gets written, you may change all informations about the event sink
virtual bool BeforeWriteDelegate( const wxObject *WXUNUSED(object), const wxClassInfo* WXUNUSED(classInfo) , const wxPropertyInfo *WXUNUSED(propInfo) ,
const wxObject *&WXUNUSED(eventSink) , const wxHandlerInfo* &WXUNUSED(handlerInfo) ) { return true ; }
} ;
class wxWriter : public wxObject
{
public :
wxWriter() ;
~wxWriter() ;
// with this call you start writing out a new top-level object
void WriteObject(const wxObject *object, const wxClassInfo *classInfo , wxPersister *persister , const wxString &name ) ;
int GetObjectID(const wxObject *obj) ;
bool IsObjectKnown( const wxObject *obj ) ;
//
// streaming callbacks
//
// these callbacks really write out the values in the stream format
//
// start of writing an toplevel object name param is used for unique identification within the container
virtual void DoBeginWriteObject(const wxObject *object, const wxClassInfo *classInfo, int objectID , const wxString &name ) = 0 ;
// 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 , const wxString &name ) = 0 ;
// start of writing an object used as param
virtual void DoBeginWriteParamAsObject(const wxObject *parentObject, const wxClassInfo *parentClassInfo, const wxObject *valueObject,
const wxClassInfo *valueObjectClassInfo, int valueObjectID , const wxPropertyInfo *propInfo ) = 0 ;
// end of writing an object used as param
virtual void DoEndWriteParamAsObject(const wxObject *parentObject, const wxClassInfo *parentClassInfo, const wxObject *valueObject,
const wxClassInfo *valueObjectClassInfo, int valueObjectID , const wxPropertyInfo *propInfo ) = 0 ;
// insert an object reference to an already written object
virtual void DoWriteObjectReference(const wxObject *parentObject, const wxClassInfo *parentClassInfo, const wxObject *valueObject,
const wxClassInfo *valueObjectClassInfo, int valueObjectID , const wxPropertyInfo *propInfo ) = 0 ;
// writes a property in the stream format
virtual void DoWriteProperty( const wxObject *object, const wxClassInfo* classInfo , const wxPropertyInfo *propInfo , wxxVariant &value ) = 0 ;
// 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 ) = 0;
private :
struct wxWriterInternal ;
wxWriterInternal* m_data ;
struct wxWriterInternalPropertiesData ;
void WriteAllProperties( const wxObject * obj , const wxClassInfo* ci , wxPersister *persister, wxWriterInternalPropertiesData * data ) ;
} ;
class wxXmlWriter : public wxWriter
{
public :
wxXmlWriter( wxXmlNode * parent ) ;
~wxXmlWriter() ;
//
// streaming callbacks
//
// these callbacks really write out the values in the stream format
//
// start of writing an toplevel object name param is used for unique identification within the container
virtual void DoBeginWriteObject(const wxObject *object, const wxClassInfo *classInfo, int objectID , const wxString &name ) ;
// 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 , const wxString &name ) ;
// start of writing an object used as param
virtual void DoBeginWriteParamAsObject(const wxObject *parentObject, const wxClassInfo *parentClassInfo, const wxObject *valueObject,
const wxClassInfo *valueObjectClassInfo, int valueObjectID , const wxPropertyInfo *propInfo ) ;
// end of writing an object used as param
virtual void DoEndWriteParamAsObject(const wxObject *parentObject, const wxClassInfo *parentClassInfo, const wxObject *valueObject,
const wxClassInfo *valueObjectClassInfo, int valueObjectID , const wxPropertyInfo *propInfo ) ;
// insert an object reference to an already written object or to a null object
virtual void DoWriteObjectReference(const wxObject *parentObject, const wxClassInfo *parentClassInfo, const wxObject *valueObject,
const wxClassInfo *valueObjectClassInfo, int valueObjectID , const wxPropertyInfo *propInfo ) ;
// writes a property in the stream format
virtual void DoWriteProperty( const wxObject *object, const wxClassInfo* classInfo , const wxPropertyInfo *propInfo , wxxVariant &value ) ;
// 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* handlerInfo ) ;
private :
struct wxXmlWriterInternal ;
wxXmlWriterInternal* m_data ;
} ;
/*
Streaming callbacks for depersisting XML to code, or running objects
@@ -53,6 +165,7 @@ class wxReader : public wxObject
public :
wxReader() ;
~wxReader() ;
// the only thing wxReader knows about is the class info by object ID
wxClassInfo *GetObjectClassInfo(int objectID) ;
bool HasObjectClassInfo( int objectID ) ;