#include "lfrxmlhandler.h"
#include <QDebug>

LFRXmlHandler::LFRXmlHandler(QObject *parent) :
    QObject(parent)
{
}

/*!
    Reset the state of the handler to ensure that new documents are
    read correctly.

    We return true to indicate that parsing should continue.
*/

bool LFRXmlHandler::startDocument()
{
    elementName.clear();
    elementIndentation.clear();
    indentationLevel = 0;

    return true;
}

/*!
    Process each starting element in the XML document.

    Append the element name to the list of elements found; add its
    corresponding indentation level to the list of indentation levels.

    Increase the level of indentation by one column.

    We return true to indicate that parsing should continue.
*/

bool LFRXmlHandler::startElement(const QString &, const QString &,
    const QString & qName, const QXmlAttributes &)
{
    elementName.append(qName);
    elementIndentation.append(indentationLevel);
    indentationLevel += 1;

    if (qName == "EventBinary")
    {
        emit displayMessage("EventBinary detected");
    }

    return true;
}

/*!
    Process each ending element in the XML document.

    Decrease the level of indentation by one column.

    We return true to indicate that parsing should continue.
*/

bool LFRXmlHandler::endElement(const QString &, const QString &,
    const QString & qName)
{
    if (qName == "EventTime")
    {
        emit displayMessage("/EventTime detected");
    }
    indentationLevel -= 1;

    return true;
}

/*!
    Report a fatal parsing error, and return false to indicate to the reader
    that parsing should stop.
*/

bool LFRXmlHandler::fatalError (const QXmlParseException & exception)
{
    qWarning() << QString("Fatal error on line %1, column %2: %3").arg(
            exception.lineNumber()).arg(exception.columnNumber()).arg(
            exception.message());

        return true;
}

/*!
    Return the list of element names found.
*/

QStringList& LFRXmlHandler::names ()
{
    return elementName;
}

/*!
    Return the list of indentations used for each element found.
*/

QList<int>& LFRXmlHandler::indentations ()
{
    return elementIndentation;
}

void LFRXmlHandler::packetStoreHasChanged(QList<TMPacketToRead *> *ccsdsPacketStore)
{
    this->ccsdsPacketStore = ccsdsPacketStore;
}