// Name: wx/xtistrm.h
// Purpose: streaming runtime metadata information (extended class info)
// Author: Stefan Csomor
-// Modified by:
+// Modified by:
// Created: 27/07/03
// RCS-ID: $Id$
// Copyright: (c) 2003 Stefan Csomor
#ifndef _WX_XTISTRMH__
#define _WX_XTISTRMH__
-#if defined(__GNUG__) && !defined(__APPLE__)
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma interface "xtistrm.h"
#endif
#if wxUSE_EXTENDED_RTTI
const int wxInvalidObjectID = -2 ;
-const int wxNullObjectID = -1 ;
+const int wxNullObjectID = -3 ;
// Filer contains the interfaces for streaming objects in and out of XML,
// rendering them either to objects in memory, or to code. Note: We
// 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 );
+// ----------------------------------------------------------------------------
+// wxPersister
+//
+// This class will be asked during the streaming-out process about every single
+// property or object instance. It can veto streaming out by returning false
+// or modify the value before it is streamed-out.
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_BASE wxWriter ;
+class WXDLLIMPEXP_BASE wxReader ;
+
+class WXDLLIMPEXP_BASE wxPersister
+{
+public :
+ // will be called before an object is written, may veto by returning false
+ virtual bool BeforeWriteObject( wxWriter *WXUNUSED(writer) , const wxObject *WXUNUSED(object) , const wxClassInfo *WXUNUSED(classInfo) , wxxVariantArray &WXUNUSED(metadata)) { return true ; }
+
+ // will be called after this object has been written, may be needed for adjusting stacks
+ virtual void AfterWriteObject( wxWriter *WXUNUSED(writer) , const wxObject *WXUNUSED(object) , const wxClassInfo *WXUNUSED(classInfo) ) {}
+
+ // will be called before a property gets written, may change the value , eg replace a concrete wxSize by wxSize( wxDefaultCoord , wxDefaultCoord ) or veto
+ // writing that property at all by returning false
+ virtual bool BeforeWriteProperty( wxWriter *WXUNUSED(writer) , const wxObject *WXUNUSED(object), const wxPropertyInfo *WXUNUSED(propInfo) , wxxVariant &WXUNUSED(value) ) { return true ; }
+
+ // will be called before a property gets written, may change the value , eg replace a concrete wxSize by wxSize( wxDefaultCoord , wxDefaultCoord ) or veto
+ // writing that property at all by returning false
+ virtual bool BeforeWriteProperty( wxWriter *WXUNUSED(writer) , const wxObject *WXUNUSED(object), const wxPropertyInfo *WXUNUSED(propInfo) , wxxVariantArray &WXUNUSED(value) ) { return true ; }
+
+ // will be called after a property has been written out, may be needed for adjusting stacks
+ virtual void AfterWriteProperty( wxWriter *WXUNUSED(writer) , const wxPropertyInfo *WXUNUSED(propInfo) ) {}
+
+ // will be called before this delegate gets written
+ virtual bool BeforeWriteDelegate( wxWriter *WXUNUSED(writer) , const wxObject *WXUNUSED(object), const wxClassInfo* WXUNUSED(classInfo) , const wxPropertyInfo *WXUNUSED(propInfo) ,
+ const wxObject *&WXUNUSED(eventSink) , const wxHandlerInfo* &WXUNUSED(handlerInfo) ) { return true ; }
+
+ virtual void AfterWriteDelegate( wxWriter *WXUNUSED(writer) , const wxObject *WXUNUSED(object), const wxClassInfo* WXUNUSED(classInfo) , const wxPropertyInfo *WXUNUSED(propInfo) ,
+ const wxObject *&WXUNUSED(eventSink) , const wxHandlerInfo* &WXUNUSED(handlerInfo) ) { }
+} ;
+
+class WXDLLIMPEXP_BASE 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 , wxxVariantArray &WXUNUSED(metadata)) ;
+
+ //
+ // Managing the object identity table a.k.a context
+ //
+ // these methods make sure that no object gets written twice, because sometimes multiple calls to the WriteObject will be
+ // made without wanting to have duplicate objects written, the object identity table will be reset manually
+
+ virtual void ClearObjectContext() ;
+
+ // gets the object Id for a passed in object in the context
+ int GetObjectID(const wxObject *obj) ;
+
+ // returns true if this object has already been written in this context
+ bool IsObjectKnown( const wxObject *obj ) ;
+
+ //
+ // 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 ) = 0 ;
+
+ // ends writing out a new toplevel entry which has the indicated unique name
+ virtual void DoEndWriteTopLevelEntry( const wxString &name ) = 0 ;
+
+ // start of writing an object having the passed in ID
+ virtual void DoBeginWriteObject(const wxObject *object, const wxClassInfo *classInfo, int objectID , wxxVariantArray &metadata ) = 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 ) = 0 ;
+
+ // writes a simple property in the stream format
+ virtual void DoWriteSimpleType( wxxVariant &value ) = 0 ;
+
+ // start of writing a complex property into the stream (
+ virtual void DoBeginWriteProperty( const wxPropertyInfo *propInfo ) = 0 ;
+
+ // end of writing a complex property into the stream
+ virtual void DoEndWriteProperty( const wxPropertyInfo *propInfo ) = 0;
+
+ virtual void DoBeginWriteElement() = 0 ;
+ virtual void DoEndWriteElement() = 0 ;
+ // insert an object reference to an already written object
+ virtual void DoWriteRepeatedObject( int objectID ) = 0 ;
+
+ // insert a null reference
+ virtual void DoWriteNullObject() = 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 ) ;
+ void WriteOneProperty( const wxObject *obj , const wxClassInfo* ci , const wxPropertyInfo* pi , wxPersister *persister , wxWriterInternalPropertiesData *data ) ;
+ void WriteObject(const wxObject *object, const wxClassInfo *classInfo , wxPersister *persister , bool isEmbedded, wxxVariantArray &metadata ) ;
+ void FindConnectEntry(const wxEvtHandler * evSource,const wxDelegateTypeInfo* dti, const wxObject* &sink , const wxHandlerInfo *&handler) ;
+} ;
+
/*
Streaming callbacks for depersisting XML to code, or running objects
*/
-class wxDepersister ;
+class WXDLLIMPEXP_BASE wxDepersister ;
/*
wxReader handles streaming in a class from a arbitrary format. While walking through
it issues calls out to interfaces to depersist the guts from the underlying storage format.
*/
-class wxReader : public wxObject
+class WXDLLIMPEXP_BASE 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 ) ;
void SetObjectClassInfo(int objectID, wxClassInfo* classInfo);
- // Reads the component the reader is pointed at from the underlying format.
+ // Reads the component the reader is pointed at from the underlying format.
// The return value is the root object ID, which can
// then be used to ask the depersister about that object
- virtual int ReadObject( wxDepersister *depersist ) = 0 ;
+ // if there was a problem you will get back wxInvalidObjectID and the current
+ // error log will carry the problems encoutered
+ virtual int ReadObject( const wxString &name , wxDepersister *depersist ) = 0 ;
private :
struct wxReaderInternal;
wxReaderInternal *m_data;
} ;
-/*
-wxXmlReader handles streaming in a class from XML
-*/
-
-class 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
-
- int ReadObject(wxDepersister *callbacks);
-
-private :
- int ReadComponent(wxXmlNode *parent, wxDepersister *callbacks);
-
- // accessor is only used as a temporary measure
- wxxVariant ReadValue(wxXmlNode *Node,
- wxPropertyAccessor *accessor );
-
- wxXmlNode * m_parent ;
-};
-
// This abstract class matches the allocate-init/create model of creation of objects.
// At runtime, these will create actual instances, and manipulate them.
// When generating code, these will just create statements of C++
// code to create the objects.
-class wxDepersister
+class WXDLLIMPEXP_BASE wxDepersister
{
public :
// allocate the new object on the heap, that object will have the passed in ID
- virtual void AllocateObject(int ObjectID, wxClassInfo *ClassInfo) = 0;
+ virtual void AllocateObject(int objectID, wxClassInfo *classInfo, wxxVariantArray &metadata) = 0;
+
+ // initialize the already allocated object having the ID objectID with the Create method
+ // creation parameters which are objects are having their Ids passed in objectIDValues
+ // having objectId <> wxInvalidObjectID
+
+ virtual void CreateObject(int objectID,
+ const wxClassInfo *classInfo,
+ int paramCount,
+ wxxVariant *VariantValues ,
+ int *objectIDValues ,
+ const wxClassInfo **objectClassInfos ,
+ wxxVariantArray &metadata) = 0;
- // initialize the already allocated object having the ID ObjectID with the Create method
+ // construct the new object on the heap, that object will have the passed in ID (for objects that
+ // don't support allocate-create type of creation)
// creation parameters which are objects are having their Ids passed in objectIDValues
// having objectId <> wxInvalidObjectID
- virtual void CreateObject(int ObjectID,
- const wxClassInfo *ClassInfo,
- int ParamCount,
+ virtual void ConstructObject(int objectID,
+ const wxClassInfo *classInfo,
+ int paramCount,
wxxVariant *VariantValues ,
int *objectIDValues ,
- const wxClassInfo **objectClassInfos
- ) = 0;
+ const wxClassInfo **objectClassInfos ,
+ wxxVariantArray &metadata) = 0;
- // destroy the heap-allocated object having the ID ObjectID, this may be used if an object
+ // destroy the heap-allocated object having the ID objectID, this may be used if an object
// is embedded in another object and set via value semantics, so the intermediate
// object can be destroyed after safely
- virtual void DestroyObject(int ObjectID, wxClassInfo *ClassInfo) = 0;
+ virtual void DestroyObject(int objectID, wxClassInfo *classInfo) = 0;
// set the corresponding property
- virtual void SetProperty(int ObjectID,
- const wxClassInfo *ClassInfo,
- const wxPropertyInfo* PropertyInfo ,
+ virtual void SetProperty(int objectID,
+ const wxClassInfo *classInfo,
+ const wxPropertyInfo* propertyInfo ,
const wxxVariant &VariantValue) = 0;
// sets the corresponding property (value is an object)
- virtual void SetPropertyAsObject(int ObjectId,
- const wxClassInfo *ClassInfo,
- const wxPropertyInfo* PropertyInfo ,
+ virtual void SetPropertyAsObject(int objectID,
+ const wxClassInfo *classInfo,
+ const wxPropertyInfo* propertyInfo ,
int valueObjectId) = 0;
+ // adds an element to a property collection
+ virtual void AddToPropertyCollection( int objectID ,
+ const wxClassInfo *classInfo,
+ const wxPropertyInfo* propertyInfo ,
+ const wxxVariant &VariantValue) = 0;
+
+ // sets the corresponding property (value is an object)
+ virtual void AddToPropertyCollectionAsObject(int objectID,
+ const wxClassInfo *classInfo,
+ const wxPropertyInfo* propertyInfo ,
+ int valueObjectId) = 0;
// sets the corresponding event handler
virtual void SetConnect(int EventSourceObjectID,
const wxClassInfo *EventSourceClassInfo,
- const wxDelegateTypeInfo *delegateInfo ,
+ const wxPropertyInfo *delegateInfo ,
const wxClassInfo *EventSinkClassInfo ,
const wxHandlerInfo* handlerInfo ,
int EventSinkObjectID ) = 0;
an object into a running memory image, as opposed to writing
C++ initialization code to bring the object to life.
*/
-class wxRuntimeDepersister : public wxDepersister
+
+class WXDLLIMPEXP_BASE wxRuntimeDepersister : public wxDepersister
{
struct wxRuntimeDepersisterInternal ;
wxRuntimeDepersisterInternal * m_data ;
public :
- wxRuntimeDepersister() ;
- ~wxRuntimeDepersister() ;
+ wxRuntimeDepersister();
+ virtual ~wxRuntimeDepersister();
- // returns the object having the corresponding ID fully constructed
+ // returns the object having the corresponding ID fully constructed
wxObject *GetObject(int objectID) ;
// allocate the new object on the heap, that object will have the passed in ID
- virtual void AllocateObject(int objectID, wxClassInfo *classInfo) ;
+ virtual void AllocateObject(int objectID, wxClassInfo *classInfo ,
+ wxxVariantArray &metadata) ;
- // initialize the already allocated object having the ID ObjectID with the Create method
+ // initialize the already allocated object having the ID objectID with the Create method
// creation parameters which are objects are having their Ids passed in objectIDValues
// having objectId <> wxInvalidObjectID
- virtual void CreateObject(int ObjectID,
- const wxClassInfo *ClassInfo,
- int ParamCount,
+ virtual void CreateObject(int objectID,
+ const wxClassInfo *classInfo,
+ int paramCount,
wxxVariant *VariantValues ,
int *objectIDValues,
- const wxClassInfo **objectClassInfos
+ const wxClassInfo **objectClassInfos ,
+ wxxVariantArray &metadata
) ;
- // destroy the heap-allocated object having the ID ObjectID, this may be used if an object
+ // construct the new object on the heap, that object will have the passed in ID (for objects that
+ // don't support allocate-create type of creation)
+ // creation parameters which are objects are having their Ids passed in objectIDValues
+ // having objectId <> wxInvalidObjectID
+
+ virtual void ConstructObject(int objectID,
+ const wxClassInfo *classInfo,
+ int paramCount,
+ wxxVariant *VariantValues ,
+ int *objectIDValues ,
+ const wxClassInfo **objectClassInfos ,
+ wxxVariantArray &metadata) ;
+
+ // destroy the heap-allocated object having the ID objectID, this may be used if an object
// is embedded in another object and set via value semantics, so the intermediate
// object can be destroyed after safely
virtual void DestroyObject(int objectID, wxClassInfo *classInfo) ;
const wxPropertyInfo* propertyInfo ,
int valueObjectId) ;
+ // adds an element to a property collection
+ virtual void AddToPropertyCollection( int objectID ,
+ const wxClassInfo *classInfo,
+ const wxPropertyInfo* propertyInfo ,
+ const wxxVariant &VariantValue) ;
+
+ // sets the corresponding property (value is an object)
+ virtual void AddToPropertyCollectionAsObject(int objectID,
+ const wxClassInfo *classInfo,
+ const wxPropertyInfo* propertyInfo ,
+ int valueObjectId) ;
// sets the corresponding event handler
virtual void SetConnect(int eventSourceObjectID,
const wxClassInfo *eventSourceClassInfo,
- const wxDelegateTypeInfo *delegateInfo ,
+ const wxPropertyInfo *delegateInfo ,
const wxClassInfo *eventSinkClassInfo ,
const wxHandlerInfo* handlerInfo ,
int eventSinkObjectID ) ;
/*
wxDepersisterCode implements the callbacks that will depersist
-an object into a C++ initialization function.
+an object into a C++ initialization function. this will move to
+a utility lib soon
*/
-class wxTextOutputStream ;
+class WXDLLIMPEXP_BASE wxTextOutputStream ;
-class wxCodeDepersister : public wxDepersister
+class WXDLLIMPEXP_BASE wxCodeDepersister : public wxDepersister
{
private :
struct wxCodeDepersisterInternal ;
wxTextOutputStream *m_fp;
wxString ValueAsCode( const wxxVariant ¶m ) ;
public:
- wxCodeDepersister(wxTextOutputStream *out) ;
- ~wxCodeDepersister() ;
+ wxCodeDepersister(wxTextOutputStream *out);
+ virtual ~wxCodeDepersister();
// allocate the new object on the heap, that object will have the passed in ID
- virtual void AllocateObject(int objectID, wxClassInfo *classInfo) ;
+ virtual void AllocateObject(int objectID, wxClassInfo *classInfo ,
+ wxxVariantArray &metadata) ;
- // initialize the already allocated object having the ID ObjectID with the Create method
+ // initialize the already allocated object having the ID objectID with the Create method
// creation parameters which are objects are having their Ids passed in objectIDValues
// having objectId <> wxInvalidObjectID
int paramCount,
wxxVariant *variantValues ,
int *objectIDValues,
- const wxClassInfo **objectClassInfos
+ const wxClassInfo **objectClassInfos ,
+ wxxVariantArray &metadata
) ;
- // destroy the heap-allocated object having the ID ObjectID, this may be used if an object
+ // construct the new object on the heap, that object will have the passed in ID (for objects that
+ // don't support allocate-create type of creation)
+ // creation parameters which are objects are having their Ids passed in objectIDValues
+ // having objectId <> wxInvalidObjectID
+
+ virtual void ConstructObject(int objectID,
+ const wxClassInfo *classInfo,
+ int paramCount,
+ wxxVariant *VariantValues ,
+ int *objectIDValues ,
+ const wxClassInfo **objectClassInfos ,
+ wxxVariantArray &metadata) ;
+
+ // destroy the heap-allocated object having the ID objectID, this may be used if an object
// is embedded in another object and set via value semantics, so the intermediate
// object can be destroyed after safely
virtual void DestroyObject(int objectID, wxClassInfo *classInfo) ;
const wxPropertyInfo* propertyInfo ,
int valueObjectId) ;
+ // adds an element to a property collection
+ virtual void AddToPropertyCollection( int objectID ,
+ const wxClassInfo *classInfo,
+ const wxPropertyInfo* propertyInfo ,
+ const wxxVariant &VariantValue) ;
+
+ // sets the corresponding property (value is an object)
+ virtual void AddToPropertyCollectionAsObject(int objectID,
+ const wxClassInfo *classInfo,
+ const wxPropertyInfo* propertyInfo ,
+ int valueObjectId) ;
// sets the corresponding event handler
virtual void SetConnect(int eventSourceObjectID,
const wxClassInfo *eventSourceClassInfo,
- const wxDelegateTypeInfo *delegateInfo ,
+ const wxPropertyInfo *delegateInfo ,
const wxClassInfo *eventSinkClassInfo ,
const wxHandlerInfo* handlerInfo ,
int eventSinkObjectID ) ;
#endif // wxUSE_EXTENDED_RTTI
-#endif
\ No newline at end of file
+#endif
projects / wxWidgets.git / blobdiff