/****************************************************************************

**

** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).

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** This file is part of the QtXmlPatterns module of the Qt Toolkit.

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** contained in the Technology Preview License Agreement accompanying

** this package.

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****************************************************************************/

#include "qxsdinstancereader_p.h"

QT_BEGIN_NAMESPACE

using namespace QPatternist;

XsdInstanceReader::XsdInstanceReader(const QAbstractXmlNodeModel *model, const XsdSchemaContext::Ptr &context)

    : m_context(context)

    , m_model(model->iterate(model->root(QXmlNodeModelIndex()), QXmlNodeModelIndex::AxisChild))

{

}

bool XsdInstanceReader::atEnd() const

{

    return (m_model.current() == AbstractXmlPullProvider::EndOfInput);

}

void XsdInstanceReader::readNext()

{

    m_model.next();

    if (m_model.current() == AbstractXmlPullProvider::StartElement) {

        m_cachedAttributes = m_model.attributes();

        m_cachedAttributeItems = m_model.attributeItems();

        m_cachedSourceLocation = m_model.sourceLocation();

        m_cachedItem = QXmlItem(m_model.index());

    }

}

bool XsdInstanceReader::isStartElement() const

{

    return (m_model.current() == AbstractXmlPullProvider::StartElement);

}

bool XsdInstanceReader::isEndElement() const

{

    return (m_model.current() == AbstractXmlPullProvider::EndElement);

}

bool XsdInstanceReader::hasChildText() const

{

    const QXmlNodeModelIndex index = m_model.index();

    QXmlNodeModelIndex::Iterator::Ptr it = index.model()->iterate(index, QXmlNodeModelIndex::AxisChild);

    QXmlNodeModelIndex currentIndex = it->next();

    while (!currentIndex.isNull()) {

        if (currentIndex.kind() == QXmlNodeModelIndex::Text)

            return true;

        currentIndex = it->next();

    }

    return false;

}

bool XsdInstanceReader::hasChildElement() const

{

    const QXmlNodeModelIndex index = m_model.index();

    QXmlNodeModelIndex::Iterator::Ptr it = index.model()->iterate(index, QXmlNodeModelIndex::AxisChild);

    QXmlNodeModelIndex currentIndex = it->next();

    while (!currentIndex.isNull()) {

        if (currentIndex.kind() == QXmlNodeModelIndex::Element)

            return true;

        currentIndex = it->next();

    }

    return false;

}

QXmlName XsdInstanceReader::name() const

{

    return m_model.name();

}

QXmlName XsdInstanceReader::convertToQName(const QString &name) const

{

    const int pos = name.indexOf(QLatin1Char(':'));

    QXmlName::PrefixCode prefixCode = 0;

    QXmlName::NamespaceCode namespaceCode;

    QXmlName::LocalNameCode localNameCode;

    if (pos != -1) {

        prefixCode = m_context->namePool()->allocatePrefix(name.left(pos));

        namespaceCode = m_cachedItem.toNodeModelIndex().namespaceForPrefix(prefixCode);

        localNameCode = m_context->namePool()->allocateLocalName(name.mid(pos + 1));

    } else {

        prefixCode = StandardPrefixes::empty;

        namespaceCode = m_cachedItem.toNodeModelIndex().namespaceForPrefix(prefixCode);

        if (namespaceCode == -1)

            namespaceCode = StandardNamespaces::empty;

        localNameCode = m_context->namePool()->allocateLocalName(name);

    }

    return QXmlName(namespaceCode, localNameCode, prefixCode);

}

bool XsdInstanceReader::hasAttribute(const QXmlName &name) const

{

    return m_cachedAttributes.contains(name);

}

QString XsdInstanceReader::attribute(const QXmlName &name) const

{

    Q_ASSERT(m_cachedAttributes.contains(name));

    return m_cachedAttributes.value(name);

}

QSet<QXmlName> XsdInstanceReader::attributeNames() const

{

    return m_cachedAttributes.keys().toSet();

}

QString XsdInstanceReader::text() const

{

    const QXmlNodeModelIndex index = m_model.index();

    QXmlNodeModelIndex::Iterator::Ptr it = index.model()->iterate(index, QXmlNodeModelIndex::AxisChild);

    QString result;

    QXmlNodeModelIndex currentIndex = it->next();

    while (!currentIndex.isNull()) {

        if (currentIndex.kind() == QXmlNodeModelIndex::Text) {

            result.append(Item(currentIndex).stringValue());

        }

        currentIndex = it->next();

    }

    return result;

}

QXmlItem XsdInstanceReader::item() const

{

    return m_cachedItem;

}

QXmlItem XsdInstanceReader::attributeItem(const QXmlName &name) const

{

    return m_cachedAttributeItems.value(name);

}

QSourceLocation XsdInstanceReader::sourceLocation() const

{

    return m_cachedSourceLocation;

}

QVector<QXmlName> XsdInstanceReader::namespaceBindings(const QXmlNodeModelIndex &index) const

{

    return index.namespaceBindings();

}

QT_END_NAMESPACE