qqmlconnections_p.h

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QQMLCONNECTIONS_H
#define QQMLCONNECTIONS_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 <qqml.h>
#include <private/qqmlcustomparser_p.h>
 
#include <QtCore/qobject.h>
#include <QtCore/qstring.h>
 
QT_BEGIN_NAMESPACE
 
class QQmlBoundSignal;
class QQmlContext;
class QQmlConnectionsPrivate;
class Q_QML_PRIVATE_EXPORT QQmlConnections : public QObject, public QQmlParserStatus
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(QQmlConnections)
 
    Q_INTERFACES(QQmlParserStatus)
    Q_PROPERTY(QObject *target READ target WRITE setTarget NOTIFY targetChanged)
    Q_PROPERTY(bool enabled READ isEnabled WRITE setEnabled NOTIFY enabledChanged REVISION(2, 3))
    Q_PROPERTY(bool ignoreUnknownSignals READ ignoreUnknownSignals WRITE setIgnoreUnknownSignals)
    QML_NAMED_ELEMENT(Connections)
    QML_ADDED_IN_VERSION(2, 0)
    QML_CUSTOMPARSER
 
public:
    QQmlConnections(QObject *parent=nullptr);
 
    QObject *target() const;
    void setTarget(QObject *);
 
    bool isEnabled() const;
    void setEnabled(bool enabled);
 
    bool ignoreUnknownSignals() const;
    void setIgnoreUnknownSignals(bool ignore);
 
protected:
    void classBegin() override;
    void componentComplete() override;
 
Q_SIGNALS:
    void targetChanged();
    Q_REVISION(2, 3) void enabledChanged();
 
private:
    void connectSignals();
    void connectSignalsToMethods();
    void connectSignalsToBindings();
};
 
// TODO: Drop this class as soon as we can
class QQmlConnectionsParser : public QQmlCustomParser
{
public:
    void verifyBindings(const QQmlRefPointer<QV4::ExecutableCompilationUnit> &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;
};
 
// TODO: We won't need Connections to be a custom type anymore once we can drop the
//       automatic signal handler inference from undeclared properties.
template<>
inline QQmlCustomParser *qmlCreateCustomParser<QQmlConnections>()
{
    return new QQmlConnectionsParser;
}
 
QT_END_NAMESPACE
 
QML_DECLARE_TYPE(QQmlConnections)
 
#endif