include/embite/Element.h

/*
    Copyright 2008 Nikola Tassev 
    This file is part of Embite.

    Embite is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    Embite is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with Embite.  If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __embite_Element_h
#define __embite_Element_h

#include "VariantValue.h"
#include "ElementOwner.h"
#include <memory>

namespace xmlpp
{
class Document;
class Element;
class Attribute;
}

namespace embite
{

class Element : public ElementOwner
{
public:
    Element(ElementOwner* owner,
            const Glib::ustring& name, 
            const Glib::ustring& prefix = Glib::ustring(), const Glib::ustring& nsUri = Glib::ustring());

    Element(xmlpp::Element* xElem, ElementOwner* owner = NULL);

    ~Element();

    Element* getSibling(const Glib::ustring& name, const Glib::ustring& nsUri = Glib::ustring(), 
                        Element* excludeList = NULL, ElementOwner* owner = NULL) const;

    Element* getElement(const Glib::ustring& name, const Glib::ustring& nsUri = Glib::ustring(), 
                        Element* excludeList = NULL, ElementOwner* owner = NULL) const;

    bool checkAttribute(const VariantValueIn& val, const Glib::ustring& name, const Glib::ustring& nsUri = Glib::ustring()) const;

    bool getAttributeValue(VariantValueOut val, const Glib::ustring& name, const Glib::ustring& nsUri = Glib::ustring()) const;

    bool checkValue(const VariantValueIn& val) const;

    bool getValue(VariantValueOut val, Element* excludeList = NULL, ElementOwner* owner = NULL) const;

    bool getValue(Element*& children, Element* excludeList = NULL, ElementOwner* owner = NULL) const;

    Element* pNext;

    static Element* createSibling(ElementOwner* owner,
                                  Element*& base,
                                  const Glib::ustring& name, 
                                  const Glib::ustring& prefix = Glib::ustring(), const Glib::ustring& nsUri = Glib::ustring());

    Element* createElement(const Glib::ustring& name, 
                           const Glib::ustring& prefix = Glib::ustring(), const Glib::ustring& nsUri = Glib::ustring());

    void createAttribute(const Glib::ustring& name,
                         const VariantValueIn& val,
                         const Glib::ustring& prefix = Glib::ustring(), const Glib::ustring& nsUri = Glib::ustring());

    void setValue(VariantValueIn val);

    void setValue(Element* children);

    xmlpp::Document* getDocument();

private:
    class Impl;
    std::auto_ptr<Impl> m_pImpl;

    std::auto_ptr<xmlpp::Document> m_xDoc;
    xmlpp::Element*     m_xElem;

    bool equals(const xmlpp::Element* xElem) const
    {
        return (m_xElem == xElem);
    }

    bool equalsFromList(const xmlpp::Element* xElem) const;

    xmlpp::Attribute* getAttribute(const Glib::ustring& name, const Glib::ustring& nsUri) const;

    // This class is non-copyable   
    Element(const Element&);
    Element& operator = (const Element&);
};

} // namespace embite 

#endif // __embite_Element_h

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