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/****************************************************************************
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**
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtCore module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QSTATEMACHINE_H
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#define QSTATEMACHINE_H
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#include <QtCore/qstate.h>
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#include <QtCore/qcoreevent.h>
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#include <QtCore/qlist.h>
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#include <QtCore/qobject.h>
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#include <QtCore/qset.h>
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#include <QtCore/qvariant.h>
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QT_BEGIN_HEADER
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QT_BEGIN_NAMESPACE
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QT_MODULE(Core)
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#ifndef QT_NO_STATEMACHINE
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class QStateMachinePrivate;
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class QAbstractAnimation;
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class Q_CORE_EXPORT QStateMachine : public QState
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{
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Q_OBJECT
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Q_PROPERTY(QString errorString READ errorString)
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Q_PROPERTY(RestorePolicy globalRestorePolicy READ globalRestorePolicy WRITE setGlobalRestorePolicy)
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Q_ENUMS(RestorePolicy)
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#ifndef QT_NO_ANIMATION
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Q_PROPERTY(bool animationsEnabled READ animationsEnabled WRITE setAnimationsEnabled)
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#endif
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public:
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class SignalEvent : public QEvent
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{
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public:
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SignalEvent(QObject *sender, int signalIndex,
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const QList<QVariant> &arguments);
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~SignalEvent();
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inline QObject *sender() const { return m_sender; }
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inline int signalIndex() const { return m_signalIndex; }
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inline QList<QVariant> arguments() const { return m_arguments; }
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private:
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QObject *m_sender;
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int m_signalIndex;
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QList<QVariant> m_arguments;
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friend class QSignalTransitionPrivate;
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};
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class WrappedEvent : public QEvent
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{
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public:
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WrappedEvent(QObject *object, QEvent *event);
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~WrappedEvent();
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inline QObject *object() const { return m_object; }
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inline QEvent *event() const { return m_event; }
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private:
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QObject *m_object;
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QEvent *m_event;
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};
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enum EventPriority {
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NormalPriority,
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HighPriority
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};
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enum RestorePolicy {
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DoNotRestoreProperties,
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RestoreProperties
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};
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enum Error {
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NoError,
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NoInitialStateError,
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NoDefaultStateInHistoryStateError,
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NoCommonAncestorForTransitionError
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};
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QStateMachine(QObject *parent = 0);
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~QStateMachine();
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void addState(QAbstractState *state);
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void removeState(QAbstractState *state);
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Error error() const;
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QString errorString() const;
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void clearError();
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bool isRunning() const;
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#ifndef QT_NO_ANIMATION
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bool animationsEnabled() const;
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void setAnimationsEnabled(bool enabled);
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void addDefaultAnimation(QAbstractAnimation *animation);
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QList<QAbstractAnimation *> defaultAnimations() const;
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void removeDefaultAnimation(QAbstractAnimation *animation);
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#endif // QT_NO_ANIMATION
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QStateMachine::RestorePolicy globalRestorePolicy() const;
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void setGlobalRestorePolicy(QStateMachine::RestorePolicy restorePolicy);
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void postEvent(QEvent *event, EventPriority priority = NormalPriority);
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int postDelayedEvent(QEvent *event, int delay);
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bool cancelDelayedEvent(int id);
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QSet<QAbstractState*> configuration() const;
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#ifndef QT_NO_STATEMACHINE_EVENTFILTER
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bool eventFilter(QObject *watched, QEvent *event);
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#endif
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public Q_SLOTS:
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void start();
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void stop();
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Q_SIGNALS:
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void started();
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void stopped();
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protected:
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void onEntry(QEvent *event);
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void onExit(QEvent *event);
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virtual void beginSelectTransitions(QEvent *event);
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virtual void endSelectTransitions(QEvent *event);
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virtual void beginMicrostep(QEvent *event);
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virtual void endMicrostep(QEvent *event);
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bool event(QEvent *e);
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protected:
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QStateMachine(QStateMachinePrivate &dd, QObject *parent);
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private:
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Q_DISABLE_COPY(QStateMachine)
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Q_DECLARE_PRIVATE(QStateMachine)
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Q_PRIVATE_SLOT(d_func(), void _q_start())
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Q_PRIVATE_SLOT(d_func(), void _q_process())
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#ifndef QT_NO_ANIMATION
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Q_PRIVATE_SLOT(d_func(), void _q_animationFinished())
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#endif
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};
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#endif //QT_NO_STATEMACHINE
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QT_END_NAMESPACE
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QT_END_HEADER
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#endif
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