X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/8ec1974ea170256698381cc47dd1dcd6cb494433..470402b9966ec0c9b0011193cb82bd6baa4a98c5:/include/wx/xtistrm.h diff --git a/include/wx/xtistrm.h b/include/wx/xtistrm.h index d905d6715d..1af026cfe9 100644 --- a/include/wx/xtistrm.h +++ b/include/wx/xtistrm.h @@ -2,7 +2,7 @@ // 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 @@ -12,16 +12,12 @@ #ifndef _WX_XTISTRMH__ #define _WX_XTISTRMH__ -#if defined(__GNUG__) && !defined(__APPLE__) -#pragma interface "xtistrm.h" -#endif - #include "wx/wx.h" #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 @@ -32,112 +28,225 @@ 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 ); +// ---------------------------------------------------------------------------- +// 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() ; + virtual ~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() ; + virtual ~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 - // initialize the already allocated object having the ID ObjectID with the Create method + virtual void CreateObject(int objectID, + const wxClassInfo *classInfo, + int paramCount, + wxxVariant *VariantValues , + int *objectIDValues , + const wxClassInfo **objectClassInfos , + wxxVariantArray &metadata) = 0; + + // 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; @@ -148,33 +257,49 @@ wxRuntimeDepersister implements the callbacks that will depersist 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) ; @@ -191,11 +316,22 @@ public : 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 ) ; @@ -203,12 +339,13 @@ public : /* 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 ; @@ -216,13 +353,14 @@ private : 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 @@ -231,10 +369,24 @@ public: 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) ; @@ -251,11 +403,22 @@ public: 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 ) ; @@ -263,4 +426,4 @@ public: #endif // wxUSE_EXTENDED_RTTI -#endif \ No newline at end of file +#endif