datachapter.cpp

Go to the documentation of this file.

#include <QDomElement>
#include <QDebug>
#include <QtAlgorithms>
#include "datachapter.h"
#include "datahash.h"

bool DataChapter::loadDataNode(const QDomNode data)
{
    chapterName = data.toElement().attribute("name");
    chapterId = data.toElement().attribute("chapterId").toUInt();

    QDomNode node = data.firstChild();
    while(!node.isNull())
    {
        if(node.nodeName() == "exercise")
        {
            DataExercise *ex = new DataExercise();
            if(!ex->loadDataNode(node))
            {
                qDebug() << "error loading dataexercise";
                delete ex;
                return false;
            }
            exerciseList.append(ex);
            connect(ex, SIGNAL(changed()), this, SLOT(dataChanged()));
/*            qDebug()<<"appended exercise: " << ex;
            qDebug()<<"exerciseList: " << exerciseList;*/
        }
        else if(node.nodeName() != "#comment")
        {
            qDebug() << "Unknown element in section tag:" << node.nodeName();
        }
        node = node.nextSibling();
    }
    return true;
}

QDomElement DataChapter::saveDataNode(QDomDocument* xml)
{
    QDomElement section = xml->createElement("chapter");
    section.setAttribute("name", chapterName);
    section.setAttribute("chapterId", QString::number(chapterId));

    for(int i = 0; i < exerciseList.size(); i++)
    {
        section.appendChild(exerciseList[i]->saveDataNode(xml));
    }
    return section;
}

void DataChapter::hash(unsigned int &startValue)
{
    // Note: After we release, it is important to keep the order of these. If we really need to add something, the file version
    //       should be used to determine how to hash.
    DataHash::hash(chapterName, startValue);
    DataHash::hash(&chapterId, sizeof(chapterId), startValue);

    for(int i = 0; i < exerciseList.size(); i++)
    {
        exerciseList[i]->hash(startValue);
    }
}

void DataChapter::addExercise(DataExercise *ex)
{
    exerciseList.append(ex);
}

DataChapter::DataChapter()
{
}

DataChapter::~DataChapter()
{
    qDeleteAll(exerciseList);
    exerciseList.clear();
}

DataExercise* DataChapter::exercise(QString exerciseName)
{
    for(int i = 0; i < exerciseList.size(); i++)
    {
        if(exerciseList.value(i)->name() == exerciseName)
        {
            return exerciseList.value(i);
        }
    }
    return NULL;
}

---