core/ASCOfficeXlsFile2/source/XlsFormat/Logic/CompositeObject.h

#pragma once

#include "BaseObject.h"
#include "BinProcessor.h"

namespace XLS
{;

class CFStreamCacheReader;

// Logical representation of composite objects
//
// Another new function is to buffer objects, that had to be read but was absent in the bin stream.
// The buffered records shall be checked for existence later.
// This feature is specially for files saved in OpenOffice Calc those don't conform to the Microsoft specification
// Call them "wanted objects"
//
class CompositeObject : public BaseObject
{
public:
	CompositeObject();
	~CompositeObject();

	//virtual const bool doSomething(BinProcessor& proc);
	virtual const bool read(CFStreamCacheReader& reader, BaseObject* parent, const bool mandatory); // Read self and children
	//virtual const bool write(BinWriterProcessor& proc, const bool is_mandatory); // Write self and children
	virtual const bool loadContent(BinProcessor& proc) = 0;

	virtual const bool loadContentRead(BinReaderProcessor& proc);

	//virtual void toXML(MSXML2::IXMLDOMElementPtr own_tag);
	//virtual void fromXML(MSXML2::IXMLDOMElementPtr own_tag);

public:
	BO_ATTRIB_MARKUP_BEGIN
	BO_ATTRIB_MARKUP_END

};

// This class helps to process parenthesis in ABNF specification
class ABNFParenthesis : public CompositeObject
{
public:
	ABNFParenthesis(){};

	virtual const bool read(CFStreamCacheReader& reader, BaseObject* parent, const bool is_mandatory);

private:
	virtual BiffStructurePtr createElement() { return BiffStructurePtr();};
};


} // namespace XLS