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diff --git a/src/quick/particles/qquickparticlegroup.cpp b/src/quick/particles/qquickparticlegroup.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Declarative module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qquickparticlegroup_p.h"
+
+/*!
+    \qmlclass ParticleGroup QQuickParticleGroup
+    \inqmlmodule QtQuick.Particles 2
+    \brief ParticleGroup elements allow you to set attributes on a logical particle group.
+
+    This element allows you to set timed transitions on particle groups.
+
+    You can also use this element to group particle system elements related to the logical
+    particle group. Emitters, Affectors and Painters set as direct children of a ParticleGroup
+    will automatically apply to that logical particle group. TrailEmitters will automatically follow
+    the group.
+
+    If a ParticleGroup element is not defined for a group, the group will function normally as if
+    none of the transition properties were set.
+*/
+/*!
+    \qmlproperty ParticleSystem QtQuick.Particles2::ParticleGroup::system
+    This is the system which will contain the group.
+
+    If the ParticleGroup is a direct child of a ParticleSystem, it will automatically be associated with it.
+*/
+/*!
+    \qmlproperty string QtQuick.Particles2::ParticleGroup::name
+    This is the name of the particle group, and how it is generally referred to by other elements.
+
+    If elements refer to a name which does not have an explicit ParticleGroup created, it will
+    work normally (with no transitions specified for the group). If you do not need to assign
+    duration based transitions to a group, you do not need to create a ParticleGroup with that name (although you may).
+*/
+/*!
+    \qmlproperty int QtQuick.Particles2::ParticleGroup::duration
+    The time in milliseconds before the group will attempt to transition.
+
+*/
+/*!
+    \qmlproperty ParticleSystem QtQuick.Particles2::ParticleGroup::durationVariation
+    The maximum number of milliseconds that the duration of the transition cycle varies per particle in the group.
+
+    Default value is zero.
+*/
+/*!
+    \qmlproperty ParticleSystem QtQuick.Particles2::ParticleGroup::to
+    The weighted list of transitions valid for this group.
+
+    If the chosen transition stays in this group, another duration (+/- up to durationVariation)
+    milliseconds will occur before another transition is attempted.
+*/
+
+QQuickParticleGroup::QQuickParticleGroup(QObject* parent)
+    : QQuickStochasticState(parent)
+    , m_system(0)
+{
+
+}
+
+void delayedRedirect(QDeclarativeListProperty<QObject> *prop, QObject *value)
+{
+    QQuickParticleGroup* pg = qobject_cast<QQuickParticleGroup*>(prop->object);
+    if (pg)
+        pg->delayRedirect(value);
+}
+
+QDeclarativeListProperty<QObject> QQuickParticleGroup::particleChildren()
+{
+    QQuickParticleSystem* system = qobject_cast<QQuickParticleSystem*>(parent());
+    if (system)
+        return QDeclarativeListProperty<QObject>(this, 0, &QQuickParticleSystem::statePropertyRedirect);
+    else
+        return QDeclarativeListProperty<QObject>(this, 0, &delayedRedirect);
+}
+
+void QQuickParticleGroup::setSystem(QQuickParticleSystem* arg)
+{
+    if (m_system != arg) {
+        m_system = arg;
+        m_system->registerParticleGroup(this);
+        performDelayedRedirects();
+        emit systemChanged(arg);
+    }
+}
+
+void QQuickParticleGroup::delayRedirect(QObject *obj)
+{
+    m_delayedRedirects << obj;
+}
+
+void QQuickParticleGroup::performDelayedRedirects()
+{
+    if (!m_system)
+        return;
+    foreach (QObject* obj, m_delayedRedirects)
+        m_system->stateRedirect(this, m_system, obj);
+
+    m_delayedRedirects.clear();
+}
+
+void QQuickParticleGroup::componentComplete(){
+    if (!m_system && qobject_cast<QQuickParticleSystem*>(parent()))
+        setSystem(qobject_cast<QQuickParticleSystem*>(parent()));
+}