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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qactiontransition.h"
+#include "qactiontransition_p.h"
+#include "qstateaction.h"
+#include "qstateaction_p.h"
+
+QT_BEGIN_NAMESPACE
+
+/*!
+ \class QActionTransition
+
+ \brief The QActionTransition class provides an action-based transition.
+
+ \since 4.6
+ \ingroup statemachine
+
+ QActionTransition provides an action-based transition; you add actions with
+ the addAction() function. The transition executes the actions when the
+ transition is triggered. QActionTransition is part of \l{The State Machine
+ Framework}.
+
+ The invokeMethodOnTransition() function is used for defining method
+ invocations that should be performed when a transition is taken.
+
+ \code
+ QStateMachine machine;
+ QState *s1 = new QState();
+ machine.addState(s1);
+ QActionTransition *t1 = new QActionTransition();
+ QLabel label;
+ t1->invokeMethodOnTransition(&label, "clear");
+ QState *s2 = new QState();
+ machine.addState(s2);
+ t1->setTargetState(s2);
+ s1->addTransition(t1);
+ \endcode
+
+ Actions are executed in the order in which they were added.
+
+ \sa QState::addTransition(), QStateAction
+*/
+
+QActionTransitionPrivate::QActionTransitionPrivate()
+{
+}
+
+QActionTransitionPrivate::~QActionTransitionPrivate()
+{
+}
+
+QActionTransitionPrivate *QActionTransitionPrivate::get(QActionTransition *q)
+{
+ return q->d_func();
+}
+
+const QActionTransitionPrivate *QActionTransitionPrivate::get(const QActionTransition *q)
+{
+ return q->d_func();
+}
+
+QList<QStateAction*> QActionTransitionPrivate::actions() const
+{
+ QList<QStateAction*> result;
+ QList<QObject*>::const_iterator it;
+#ifdef QT_STATEMACHINE_SOLUTION
+ const QObjectList &children = q_func()->children();
+#endif
+ for (it = children.constBegin(); it != children.constEnd(); ++it) {
+ QStateAction *s = qobject_cast<QStateAction*>(*it);
+ if (s)
+ result.append(s);
+ }
+ return result;
+}
+
+/*!
+ Constructs a new QActionTransition object with the given \a sourceState.
+*/
+QActionTransition::QActionTransition(QState *sourceState)
+ : QAbstractTransition(*new QActionTransitionPrivate, sourceState)
+{
+}
+
+/*!
+ Constructs a new QActionTransition object with the given \a targets and \a
+ sourceState.
+*/
+QActionTransition::QActionTransition(const QList<QAbstractState*> &targets, QState *sourceState)
+ : QAbstractTransition(*new QActionTransitionPrivate, targets, sourceState)
+{
+}
+
+/*!
+ \internal
+*/
+QActionTransition::QActionTransition(QActionTransitionPrivate &dd, QState *parent)
+ : QAbstractTransition(dd, parent)
+{
+}
+
+/*!
+ \internal
+*/
+QActionTransition::QActionTransition(QActionTransitionPrivate &dd, const QList<QAbstractState*> &targets, QState *parent)
+ : QAbstractTransition(dd, targets, parent)
+{
+}
+
+/*!
+ Destroys this transition.
+*/
+QActionTransition::~QActionTransition()
+{
+}
+
+/*!
+ Instructs this QActionTransition to invoke the given \a method of the given \a
+ object with the given \a arguments when the transition is taken. This
+ function will create a QStateInvokeMethodAction object and add it to the
+ actions of the transition.
+*/
+void QActionTransition::invokeMethodOnTransition(QObject *object, const char *method,
+ const QList<QVariant> &arguments)
+{
+ addAction(new QStateInvokeMethodAction(object, method, arguments));
+}
+
+/*!
+ Adds the given \a action to this transition.
+ The action will be executed when the transition is triggered.
+ The transition takes ownership of the action.
+
+ \sa removeAction()
+*/
+void QActionTransition::addAction(QStateAction *action)
+{
+ if (!action) {
+ qWarning("QActionTransition::addAction: cannot add null action");
+ return;
+ }
+ action->setParent(this);
+}
+
+/*!
+ Removes the given \a action from this transition.
+ The transition releases ownership of the action.
+
+ \sa addAction()
+*/
+void QActionTransition::removeAction(QStateAction *action)
+{
+ if (!action) {
+ qWarning("QActionTransition::removeAction: cannot remove null action");
+ return;
+ }
+ action->setParent(0);
+}
+
+/*!
+ Returns this transitions's actions, or an empty list if the transition has
+ no actions.
+
+ \sa addAction()
+*/
+QList<QStateAction*> QActionTransition::actions() const
+{
+ Q_D(const QActionTransition);
+ return d->actions();
+}
+
+/*!
+ \reimp
+*/
+void QActionTransition::onTransition()
+{
+ Q_D(QActionTransition);
+ QList<QStateAction*> actions = d->actions();
+ for (int i = 0; i < actions.size(); ++i)
+ QStateActionPrivate::get(actions.at(i))->callExecute();
+}
+
+/*!
+ \reimp
+*/
+bool QActionTransition::event(QEvent *e)
+{
+ return QAbstractTransition::event(e);
+}
+
+QT_END_NAMESPACE