Say hello to the Declarative State Machine Framework

The Declarative State Machine Framework extends Qt's State Machine
Framework (QSM) into QML to provide types for creating and executing
state graphs in QML. This gives you the power of deterministic state
machines, but declaratively and without having to write all of the
boilerplate code. It is an alternative to the existing QML State type,
intended for more complex models.

[ChangeLog][QtQML] The Declarative State Machine Framework extends Qt's
State Machine Framework (QSM) into QML. This gives you the power of
deterministic state machines, but declaratively.

Change-Id: I02390ba7f1baed50935364530925bd75087299cb
Reviewed-by: Sebastian Sauer <sebastian.sauer@kdab.com>
Reviewed-by: BogDan Vatra <bogdan@kde.org>
Reviewed-by: Brett Stottlemyer <bstottle@ford.com>

1 files changed, 86 insertions, 0 deletions

diff --git a/src/imports/statemachine/signaltransition.h b/src/imports/statemachine/signaltransition.h
new file mode 100644
index 0000000000..614a6064a5
--- /dev/null
+++ b/src/imports/statemachine/signaltransition.h
@@ -0,0 +1,86 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Ford Motor Company
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtQml 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
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+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/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 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, Digia gives you certain additional
+** rights.  These rights are described in the Digia 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef SIGNALTRANSITION_H
+#define SIGNALTRANSITION_H
+
+#include <QtCore/QSignalTransition>
+#include <QtCore/QVariant>
+#include <QtQml/QJSValue>
+
+QT_BEGIN_NAMESPACE
+
+class SignalTransition : public QSignalTransition
+{
+    Q_OBJECT
+    Q_PROPERTY(QJSValue signal READ signal WRITE setSignal NOTIFY qmlSignalChanged)
+    Q_PROPERTY(bool guard READ guard WRITE setGuard NOTIFY guardChanged)
+
+public:
+    explicit SignalTransition(QState *parent = Q_NULLPTR);
+
+    bool guard() const;
+    void setGuard(bool guard);
+
+    bool eventTest(QEvent *event);
+
+    const QJSValue &signal();
+    void setSignal(const QJSValue &signal);
+
+    Q_INVOKABLE void invoke();
+
+Q_SIGNALS:
+    void guardChanged();
+    void invokeYourself();
+    /*!
+     * \internal
+     */
+    void qmlSignalChanged();
+
+private:
+    QByteArray m_data;
+    QJSValue m_signal;
+    bool m_guard;
+};
+
+QT_END_NAMESPACE
+
+#endif