/**************************************************************************
**
** Copyright (C) 2015 Dmitry Savchenko
** Copyright (C) 2015 Vasiliy Sorokin
** Contact: http://www.qt.io/licensing
**
** This file is part of Qt Creator.
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** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
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** LICENSE.LGPLv3 included in the packaging of this file.  Please review the
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#include "todoitemsmodel.h"
#include "constants.h"

#include <utils/algorithm.h>

#include <utils/theme/theme.h>

#include <QIcon>

using namespace Utils;

namespace Todo {
namespace Internal {

TodoItemsModel::TodoItemsModel(QObject *parent) :
    QAbstractTableModel(parent),
    m_todoItemsList(0),
    m_currentSortColumn(Constants::OutputColumnIndex(0)),
    m_currentSortOrder(Qt::AscendingOrder)
{
}

void TodoItemsModel::setTodoItemsList(QList<TodoItem> *list)
{
    m_todoItemsList = list;
    todoItemsListUpdated();
}

int TodoItemsModel::rowCount(const QModelIndex &parent) const
{
    Q_UNUSED(parent)

    // There's only one level of hierarchy
    if (parent.isValid())
        return 0;

    if (!m_todoItemsList)
        return 0;

    return m_todoItemsList->count();
}

int TodoItemsModel::columnCount(const QModelIndex &parent) const
{
    Q_UNUSED(parent)

    return Constants::OUTPUT_COLUMN_COUNT;
}

QVariant TodoItemsModel::data(const QModelIndex &index, int role) const
{
    if (!index.isValid())
        return QVariant();

    TodoItem item = m_todoItemsList->at(index.row());

    if (role == Qt::BackgroundColorRole)
        return item.color;
    if (role == Qt::TextColorRole)
        return creatorTheme()->color(Theme::TodoItemTextColor);
    if (role == Qt::ForegroundRole)
        return creatorTheme()->color(Theme::TodoItemTextColor);

    switch (index.column()) {

        case Constants::OUTPUT_COLUMN_TEXT:
            switch (role) {
                case Qt::DisplayRole:
                    return item.text;
                case Qt::DecorationRole:
                    return QVariant::fromValue(QIcon(item.iconResource));
            }
            break;

        case Constants::OUTPUT_COLUMN_FILE:
            if (role == Qt::DisplayRole)
                return item.file;
            break;

        case Constants::OUTPUT_COLUMN_LINE:
            if (role == Qt::DisplayRole)
                return item.line;
            break;
    }

    return QVariant();
}

QVariant TodoItemsModel::headerData(int section, Qt::Orientation orientation, int role) const
{
    if (orientation == Qt::Vertical)
        return QVariant();

    if (role != Qt::DisplayRole)
        return QVariant();

    switch (section) {
        case Constants::OUTPUT_COLUMN_TEXT:
            return tr(Constants::OUTPUT_COLUMN_TEXT_TITLE);

        case Constants::OUTPUT_COLUMN_FILE:
            return tr(Constants::OUTPUT_COLUMN_FILE_TITLE);

        case Constants::OUTPUT_COLUMN_LINE:
            return tr(Constants::OUTPUT_COLUMN_LINE_TITLE);

        default:
            return QVariant();
    }
}

void TodoItemsModel::sort(int column, Qt::SortOrder order)
{
    m_currentSortColumn = Constants::OutputColumnIndex(column);
    m_currentSortOrder = order;

    TodoItemSortPredicate predicate(m_currentSortColumn, m_currentSortOrder);
    Utils::sort(*m_todoItemsList, predicate);
    emit layoutChanged();
}

void TodoItemsModel::todoItemsListUpdated()
{
    if (!m_todoItemsList)
        return;

    sort(m_currentSortColumn, m_currentSortOrder);
}

}
}