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

**

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

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the Qt Mobility Components.

**

** $QT_BEGIN_LICENSE:LGPL$

** No Commercial Usage

** This file contains pre-release code and may not be distributed.

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** 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 as published by the Free Software

** Foundation and appearing in the file LICENSE.LGPL included in the

** packaging of this file.  Please review the following information to

** ensure the GNU Lesser General Public License version 2.1 requirements

** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

**

**

**

**

**

**

**

**

** $QT_END_LICENSE$

**

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

#include "qcontactchangeset.h"

#include "qcontactchangeset_p.h"

#include "qcontactmanagerengine.h"

QTM_BEGIN_NAMESPACE

/*!

   \class QContactChangeSet

   \brief The QContactChangeSet class provides a simple API to

   simplify the emission of state-change signals from

   QContactManagerEngine implementations.

   This class can be utilised by backend implementations to ensure

   correct emission of the \l QContactManagerEngine::dataChanged(), \l

   QContactManagerEngine::contactsAdded(), \l

   QContactManagerEngine::contactsChanged() and \l

   QContactManagerEngine::contactsRemoved().

   \sa QContactManagerEngine

 */

/*!

   Constructs a new change set

 */

QContactChangeSet::QContactChangeSet()

    : d(new QContactChangeSetData)

{

}

/*!

   Constructs a copy of the \a other change set

 */

QContactChangeSet::QContactChangeSet(const QContactChangeSet& other)

    : d(other.d)

{

}

/*!

   Frees the memory used by this change set

 */

QContactChangeSet::~QContactChangeSet()

{

}

/*!

   Assigns this change set to be equal to \a other

 */

QContactChangeSet& QContactChangeSet::operator=(const QContactChangeSet& other)

{

    d = other.d;

    return *this;

}

/*!

   Sets the data changed flag to \a dataChanged.  If this is set to true prior to calling \l emitSignals(),

   only the \l QContactManagerEngine::dataChanged() signal will be emitted; otherwise, the appropriate

   finer-grained signals will be emitted.

 */

void QContactChangeSet::setDataChanged(bool dataChanged)

{

    d->m_dataChanged = dataChanged;

}

/*!

   Returns the value of the data changed flag

 */

bool QContactChangeSet::dataChanged()

{

    return d->m_dataChanged;

}

/*!

   Returns a reference to the set of ids of contacts which have been added to

   the database.

 */

QSet<QContactLocalId>& QContactChangeSet::addedContacts()

{

    return d->m_addedContacts;

}

/*!

   Returns a reference to the set of ids of contacts which have been changed in

   the database.

 */

QSet<QContactLocalId>& QContactChangeSet::changedContacts()

{

    return d->m_changedContacts;

}

/*!

   Returns a reference to the set of ids of contacts which have been removed from

   the database.

 */

QSet<QContactLocalId>& QContactChangeSet::removedContacts()

{

    return d->m_removedContacts;

}

/*!

   Returns a reference to the set of ids of contacts which have been affected

   by the addition of relationships to the database.

 */

QSet<QContactLocalId>& QContactChangeSet::addedRelationshipsContacts()

{

    return d->m_addedRelationships;

}

/*!

   Returns a reference to the set of ids of contacts which have been affected

   by the removal of relationships from the database.

 */

QSet<QContactLocalId>& QContactChangeSet::removedRelationshipsContacts()

{

    return d->m_removedRelationships;

}

/*!

   Returns a reference to the pair of ids which represents the

   old and new self contact ids.  The first id in the pair is the

   old self contact id, while the second id in the pair is the

   new self contact id.  If the new id is different to the old id

   at the point in time when emitSignals() is called,

   the QContactManagerEngine::selfContactIdChanged() signal will be emitted.

 */

QPair<QContactLocalId, QContactLocalId>& QContactChangeSet::oldAndNewSelfContactId()

{

    return d->m_oldAndNewSelfContactId;

}

/*!

   Clears all flags and sets of ids in this change set

 */

void QContactChangeSet::clear()

{

    d->m_dataChanged = false;

    d->m_addedContacts.clear();

    d->m_changedContacts.clear();

    d->m_removedContacts.clear();

    d->m_addedRelationships.clear();

    d->m_removedRelationships.clear();

    d->m_oldAndNewSelfContactId = QPair<QContactLocalId, QContactLocalId>();

}

/*!

   Emits the appropriate signals from the given \a engine given the state of the change set

 */

void QContactChangeSet::emitSignals(QContactManagerEngine *engine)

{

    if (!engine)

        return;

    if (d->m_dataChanged) {

        emit engine->dataChanged();

    } else {

        if (!d->m_addedContacts.isEmpty())

            emit engine->contactsAdded(d->m_addedContacts.toList());

        if (!d->m_changedContacts.isEmpty())

            emit engine->contactsChanged(d->m_changedContacts.toList());

        if (!d->m_removedContacts.isEmpty())

            emit engine->contactsRemoved(d->m_removedContacts.toList());

        if (!d->m_addedRelationships.isEmpty())

            emit engine->relationshipsAdded(d->m_addedRelationships.toList());

        if (!d->m_removedRelationships.isEmpty())

            emit engine->relationshipsRemoved(d->m_removedRelationships.toList());

        if (d->m_oldAndNewSelfContactId.first != d->m_oldAndNewSelfContactId.second)

            emit engine->selfContactIdChanged(d->m_oldAndNewSelfContactId.first, d->m_oldAndNewSelfContactId.second);

    }

}

QTM_END_NAMESPACE