/***************************************************************************
 *   Copyright (C) 2011 by Peter Penz <peter.penz19@gmail.com>             *
 *                                                                         *
 *   Based on the Itemviews NG project from Trolltech Labs:                *
 *   http://qt.gitorious.org/qt-labs/itemviews-ng                          *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
 ***************************************************************************/

#include "kitemlistselectionmanager.h"

#include "kitemmodelbase.h"

KItemListSelectionManager::KItemListSelectionManager(QObject* parent) :
    QObject(parent),
    m_currentItem(-1),
    m_anchorItem(-1),
    m_model(0)
{
}

KItemListSelectionManager::~KItemListSelectionManager()
{
}

void KItemListSelectionManager::setCurrentItem(int current)
{
    const int previous = m_currentItem;
    if (m_model && current < m_model->count()) {
        m_currentItem = current;
    } else {
        m_currentItem = -1;
    }

    if (m_currentItem != previous) {
        emit currentChanged(m_currentItem, previous);
    }
}

int KItemListSelectionManager::currentItem() const
{
    return m_currentItem;
}

void KItemListSelectionManager::setAnchorItem(int anchor)
{
    const int previous = m_anchorItem;
    if (m_model && anchor < m_model->count()) {
        m_anchorItem = anchor;
    } else {
        m_anchorItem = -1;
    }

    if (m_anchorItem != previous) {
        emit anchorChanged(m_anchorItem, previous);
    }
}

int KItemListSelectionManager::anchorItem() const
{
    return m_anchorItem;
}

KItemModelBase* KItemListSelectionManager::model() const
{
    return m_model;
}

void KItemListSelectionManager::setModel(KItemModelBase* model)
{
    m_model = model;
}

#include "kitemlistselectionmanager.moc"