signaltransition_p.h

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// Copyright (C) 2016 Ford Motor Company

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only

// Qt-Security score:significant

#ifndef SIGNALTRANSITION_H

#define SIGNALTRANSITION_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists purely as an

// implementation detail.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include "qstatemachineqmlglobals_p.h"

#include <QtStateMachine/QSignalTransition>

#include <QtCore/QVariant>

#include <QtQml/QJSValue>

#include <QtQml/qqmlscriptstring.h>

#include <QtQml/qqmlparserstatus.h>

#include <private/qqmlcustomparser_p.h>

#include <private/qqmlrefcount_p.h>

#include <private/qqmlboundsignal_p.h>

#include <QtCore/private/qproperty_p.h>

QT_BEGIN_NAMESPACE

class Q_STATEMACHINEQML_EXPORT SignalTransition : public QSignalTransition, public QQmlParserStatus

    Q_OBJECT

    Q_INTERFACES(QQmlParserStatus)

    Q_PROPERTY(QJSValue signal READ signal WRITE setSignal

               NOTIFY qmlSignalChanged BINDABLE bindableSignal)

    Q_PROPERTY(QQmlScriptString guard READ guard WRITE setGuard

               NOTIFY guardChanged BINDABLE bindableGuard)

    QML_ELEMENT

    QML_ADDED_IN_VERSION(1, 0)

    QML_CUSTOMPARSER

public:

    explicit SignalTransition(QState *parent = nullptr);

    QQmlScriptString guard() const;

    void setGuard(const QQmlScriptString &guard);

    QBindable<QQmlScriptString> bindableGuard();

    bool eventTest(QEvent *event) override;

    void onTransition(QEvent *event) override;

    const QJSValue &signal();

    void setSignal(const QJSValue &signal);

    QBindable<QJSValue> bindableSignal();

    Q_INVOKABLE void invoke();

Q_SIGNALS:

    void guardChanged();

    void invokeYourself();

/*!

     * \internal

*/

    void qmlSignalChanged();

private:

    void classBegin() override { m_complete = false; }

    void componentComplete() override { m_complete = true; connectTriggered(); }

    void connectTriggered();

    friend class SignalTransitionParser;

    Q_OBJECT_COMPAT_PROPERTY(SignalTransition, QJSValue, m_signal, &SignalTransition::setSignal,

                             &SignalTransition::qmlSignalChanged);

    Q_OBJECT_BINDABLE_PROPERTY(SignalTransition, QQmlScriptString,

                               m_guard, &SignalTransition::guardChanged);

    bool m_complete;

    QQmlRefPointer<QV4::ExecutableCompilationUnit> m_compilationUnit;

    QList<const QV4::CompiledData::Binding *> m_bindings;

    QQmlRefPointer<QQmlBoundSignalExpression> m_signalExpression;

};

class SignalTransitionParser : public QQmlCustomParser

public:

    void verifyBindings(

            const QQmlRefPointer<QV4::CompiledData::CompilationUnit> &compilationUnit,

            const QList<const QV4::CompiledData::Binding *> &props) override;

    void applyBindings(

            QObject *object, const QQmlRefPointer<QV4::ExecutableCompilationUnit> &compilationUnit,

            const QList<const QV4::CompiledData::Binding *> &bindings) override;

};

template<>

inline QQmlCustomParser *qmlCreateCustomParser<SignalTransition>()

    return new SignalTransitionParser;

QT_END_NAMESPACE

#endif