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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()));
-}