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#include "qmlconsoleitemmodel.h"

#include <QFontMetrics>
#include <QFont>

using namespace QmlJS;

namespace QmlJSTools {
namespace Internal {

///////////////////////////////////////////////////////////////////////
//
// QmlConsoleItemModel
//
///////////////////////////////////////////////////////////////////////

QmlConsoleItemModel::QmlConsoleItemModel(QObject *parent) :
    Utils::TreeModel(new ConsoleItem, parent),
    m_maxSizeOfFileName(0)
{
    clear();
}

void QmlConsoleItemModel::clear()
{
    Utils::TreeModel::clear();
    appendItem(new ConsoleItem(ConsoleItem::InputType));
    emit selectEditableRow(index(0, 0, QModelIndex()), QItemSelectionModel::ClearAndSelect);
}

void QmlConsoleItemModel::appendItem(ConsoleItem *item, int position)
{
    if (position < 0)
        position = rootItem()->childCount() - 1; // append before editable row

    if (position < 0)
        position = 0;

    rootItem()->insertChild(position, item);
}

void QmlConsoleItemModel::appendMessage(ConsoleItem::ItemType itemType,
                                        const QString &message, int position)
{
    appendItem(new ConsoleItem(itemType, message), position);
}

void QmlConsoleItemModel::shiftEditableRow()
{
    int position = rootItem()->childCount();
    Q_ASSERT(position > 0);

    // Disable editing for old editable row
    rootItem()->lastChild()->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable);

    appendItem(new ConsoleItem(ConsoleItem::InputType), position);
    emit selectEditableRow(index(position, 0, QModelIndex()), QItemSelectionModel::ClearAndSelect);
}

int QmlConsoleItemModel::sizeOfFile(const QFont &font)
{
    int lastReadOnlyRow = rootItem()->childCount();
    lastReadOnlyRow -= 2; // skip editable row
    if (lastReadOnlyRow < 0)
        return 0;
    QString filename = static_cast<ConsoleItem *>(rootItem()->child(lastReadOnlyRow))->file();
    const int pos = filename.lastIndexOf(QLatin1Char('/'));
    if (pos != -1)
        filename = filename.mid(pos + 1);

    QFontMetrics fm(font);
    m_maxSizeOfFileName = qMax(m_maxSizeOfFileName, fm.width(filename));

    return m_maxSizeOfFileName;
}

int QmlConsoleItemModel::sizeOfLineNumber(const QFont &font)
{
    QFontMetrics fm(font);
    return fm.width(QLatin1String("88888"));
}

} // Internal
} // QmlJSTools