/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: tsmodel.cpp

*

*/

#include "tsmodel.h"

#include <QVariant>

#include <QList>

#include <HbIcon>

#include <afstorageglobals.h>

#include "tsmodelitem.h"

#include "tsdataroles.h"

#include "tstaskchangeinfo.h"

/*!

    \class TsModel

    \ingroup group_tsdevicedialogplugin

    \brief Model storing running tasks.

*/

/*!

    Constructor

    \param query used to create model

    \param pointer to parent object

*/

TsModel::TsModel(TsTaskMonitor &applicationSrv, QObject *parent) :

    QAbstractListModel(parent),

    mEntries(),

    mApplicationService(applicationSrv)

{

    connect(&applicationSrv,

            SIGNAL(taskListChanged()),

            this,

            SLOT(updateApplications()));

    fullUpdate();

}

/*!

    Destructor

*/

TsModel::~TsModel()

{

    qDeleteAll(mEntries);

}

/*!

    Returns count of rows in model

    \retval number of rows

*/

int TsModel::rowCount(const QModelIndex &parent) const

{

    Q_UNUSED(parent);

    return mEntries.count();

}

{

    beginInsertRows(parent, row, row+count-1);

    endInsertRows();

    return true;

}

bool TsModel::removeRows(int row, int count, const QModelIndex &parent)

{

    TsModelItem *oldItem = mEntries.at(row);

    beginRemoveRows(parent, row, row + count - 1);

    mEntries.removeAt(row);

    delete oldItem;

    endRemoveRows();

    return true;

}

bool TsModel::moveRows(int oldPosition, int newPosition, const QModelIndex &parent)

{

    beginMoveRows(parent, oldPosition, oldPosition, parent, newPosition);

    mEntries.move(oldPosition, newPosition);

    endMoveRows();

    return true;

}

{

    TsModelItem *oldItem = mEntries.at(row);

    delete oldItem;

    emit dataChanged(index(row),index(row));

    return true;

}

/*!

    Returns appropiate model's data

    \param index model index

    \param role which data role to return

    \retval models data

*/

QVariant TsModel::data(const QModelIndex &index, int role) const

{

    return index.isValid() ? entry(index)->data(role) : QVariant();

}

/*!

    Activate one of model entries

*/

void TsModel::openApplication(const QModelIndex &index)

{

    if (!index.isValid()) {

        return;

    }

    entry(index)->open();

}

/*!

    Close one of moder entries

*/

void TsModel::closeApplication(const QModelIndex &index)

{

    if (!index.isValid() ||

            !entry(index)->data(TsDataRoles::Closable).toBool()) {

        return;

    }

    entry(index)->close();

}

/*!

    Updates model with fresh entries

*/

void TsModel::updateApplications()

{

    QList<TsTaskChange> changes(mApplicationService.changeList());

    if (changes.count() == 0) {

        return;

    }

    //check 1st item whether we have cancel change - if so reset model

    if (changes[0].first.changeType() == TsTaskChangeInfo::EChangeCancel) {

        fullUpdate();

        return;

    }

    for (int iter(0); iter < changes.count(); iter++) {

        switch (changes[iter].first.changeType()) {

            case TsTaskChangeInfo::EChangeDelete :

                removeRows(changes[iter].first.oldOffset(), 1);

                break;

            case TsTaskChangeInfo::EChangeInsert :

                break;

            case TsTaskChangeInfo::EChangeMove :

                moveRows(changes[iter].first.oldOffset(), changes[iter].first.newOffset());

                break;

            case TsTaskChangeInfo::EChangeUpdate :

                break;

            default:

                break;

        }

    }

}

/*!

    reset model

*/

void TsModel::fullUpdate()

{

    beginResetModel();

    qDeleteAll(mEntries);

    mEntries.clear();

    getApplications();

    endResetModel();

}

/*!

    Read list of running applications

*/

void TsModel::getApplications()

{

    //get all running applications and append to entries list

    QList<TsTaskChange> tasks(mApplicationService.changeList(true));

    foreach(TsTaskChange taskData, tasks) {

        if (!taskData.second.isNull()) {

            mEntries.append(new TsModelItem(taskData.second));

        }

    }

}

/*!

    Returns an entry from model

    \param index of entry in model

    \retval pointer to an entry

*/

TsModelItem *TsModel::entry(const QModelIndex &index) const

{

    return mEntries.at(index.row());

}