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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QABSTRACTTRANSITION_H
+#define QABSTRACTTRANSITION_H
+
+#include <QtCore/qlist.h>
+#include <QtCore/qobject.h>
+
+#include <QtStateMachine/qstatemachineglobal.h>
+
+QT_REQUIRE_CONFIG(statemachine);
+
+QT_BEGIN_NAMESPACE
+
+class QEvent;
+class QAbstractState;
+class QState;
+class QStateMachine;
+
+#if QT_CONFIG(animation)
+class QAbstractAnimation;
+#endif
+
+class QAbstractTransitionPrivate;
+class Q_STATEMACHINE_EXPORT QAbstractTransition : public QObject
+{
+    Q_OBJECT
+    Q_PROPERTY(QState* sourceState READ sourceState)
+    Q_PROPERTY(QAbstractState* targetState READ targetState WRITE setTargetState NOTIFY targetStateChanged)
+    Q_PROPERTY(QList<QAbstractState*> targetStates READ targetStates WRITE setTargetStates NOTIFY targetStatesChanged)
+    Q_PROPERTY(TransitionType transitionType READ transitionType WRITE setTransitionType REVISION(1, 1))
+public:
+    enum TransitionType {
+        ExternalTransition,
+        InternalTransition
+    };
+    Q_ENUM(TransitionType)
+
+    QAbstractTransition(QState *sourceState = nullptr);
+    virtual ~QAbstractTransition();
+
+    QState *sourceState() const;
+    QAbstractState *targetState() const;
+    void setTargetState(QAbstractState* target);
+    QList<QAbstractState*> targetStates() const;
+    void setTargetStates(const QList<QAbstractState*> &targets);
+
+    TransitionType transitionType() const;
+    void setTransitionType(TransitionType type);
+
+    QStateMachine *machine() const;
+
+#if QT_CONFIG(animation)
+    void addAnimation(QAbstractAnimation *animation);
+    void removeAnimation(QAbstractAnimation *animation);
+    QList<QAbstractAnimation*> animations() const;
+#endif
+
+Q_SIGNALS:
+    void triggered(QPrivateSignal);
+    void targetStateChanged(QPrivateSignal);
+    void targetStatesChanged(QPrivateSignal);
+
+protected:
+    virtual bool eventTest(QEvent *event) = 0;
+
+    virtual void onTransition(QEvent *event) = 0;
+
+    bool event(QEvent *e) override;
+
+protected:
+    QAbstractTransition(QAbstractTransitionPrivate &dd, QState *parent);
+
+private:
+    Q_DISABLE_COPY(QAbstractTransition)
+    Q_DECLARE_PRIVATE(QAbstractTransition)
+};
+
+QT_END_NAMESPACE
+
+#endif