cxXmlOptionItem.h

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/*=========================================================================
This file is part of CustusX, an Image Guided Therapy Application.
                 
Copyright (c) SINTEF Department of Medical Technology.
All rights reserved.
                 
CustusX is released under a BSD 3-Clause license.
                 
See Lisence.txt (https://github.com/SINTEFMedtek/CustusX/blob/master/License.txt) for details.
=========================================================================*/


/*
 * sscXmlOptionItem.h
 *
 *  Created on: May 28, 2010
 *      Author: christiana
 */
#ifndef CXXMLOPTIONITEM_H_
#define CXXMLOPTIONITEM_H_

#include "cxResourceExport.h"

#include <QString>
#include <QDomElement>
#include <QVariant>

namespace cx
{

class cxResource_EXPORT XmlOptionItem
{
public:
        XmlOptionItem()
        {
        }
        XmlOptionItem(const QString& uid, QDomElement root);
        QString readValue(const QString& defval) const;
        void writeValue(const QString& val);

        QVariant readVariant(const QVariant& defval=QVariant()) const;
        void writeVariant(const QVariant& val);

private:
        QDomElement findElemFromUid(const QString& uid, QDomNode root) const;
        QString mUid;
        QDomElement mRoot;

        static QString SerializeDataToB64String(const QVariant& data);
        static QVariant DeserializeB64String(const QString& serializedVariant);
};

class cxResource_EXPORT XmlOptionFile
{
public:
        static XmlOptionFile createNull(); 

        explicit XmlOptionFile(QString filename); 
        XmlOptionFile();
        ~XmlOptionFile();

        QString getFileName();

        bool isNull() const; 

        XmlOptionFile root() const; 
        XmlOptionFile descend(QString element) const; 
        XmlOptionFile descend(QString element, QString attributeName, QString attributeValue) const; // stepdown to element with given attribute
        XmlOptionFile ascend() const; 
        XmlOptionFile tryDescend(QString element, QString attributeName, QString attributeValue) const; // stepdown only if present

        QDomDocument getDocument(); 
        QDomElement getElement(); 
        QDomElement getElement(QString level1); 
        QDomElement getElement(QString level1, QString level2); 

        void save(); 

        void removeChildren(); 
        void deleteNode(); 

        QDomElement safeGetElement(QDomElement parent, QString childName);

        //Debugging
        void printDocument(); 
        void printElement(); 
    static void printDocument(QDomDocument document);
    static void printElement(QDomElement element);

private:
        void load();

        QString mFilename;
        QDomDocument mDocument;
        QDomElement mCurrentElement; 

};

} // namespace cx

#endif /* CXXMLOPTIONITEM_H_ */