1// Copyright (C) 2016 Ford Motor Company
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#ifndef STATE_H
5#define STATE_H
6
7//
8// W A R N I N G
9// -------------
10//
11// This file is not part of the Qt API. It exists purely as an
12// implementation detail. This header file may change from version to
13// version without notice, or even be removed.
14//
15// We mean it.
16//
17
18#include "qstatemachineqmlglobals_p.h"
19#include "childrenprivate_p.h"
20
21#include <QtCore/qproperty.h>
22#include <QtStateMachine/QState>
23#include <QtQml/QQmlParserStatus>
24#include <QtQml/QQmlListProperty>
25#include <QtQml/qqml.h>
26
27QT_BEGIN_NAMESPACE
28
29class Q_STATEMACHINEQML_PRIVATE_EXPORT State : public QState, public QQmlParserStatus
30{
31 Q_OBJECT
32 Q_INTERFACES(QQmlParserStatus)
33 Q_PROPERTY(QQmlListProperty<QObject> children READ children
34 NOTIFY childrenChanged BINDABLE bindableChildren)
35 Q_CLASSINFO("DefaultProperty", "children")
36 QML_ELEMENT
37 QML_ADDED_IN_VERSION(1, 0)
38
39public:
40 explicit State(QState *parent = 0);
41
42 void classBegin() override {}
43 void componentComplete() override;
44
45 QQmlListProperty<QObject> children();
46 QBindable<QQmlListProperty<QObject>> bindableChildren() const;
47
48Q_SIGNALS:
49 void childrenChanged();
50
51private:
52 // See the childrenActualCalculation for the mutable explanation
53 mutable ChildrenPrivate<State, ChildrenMode::StateOrTransition> m_children;
54 friend ChildrenPrivate<State, ChildrenMode::StateOrTransition>;
55 void childrenContentChanged();
56 QQmlListProperty<QObject> childrenActualCalculation() const;
57 Q_OBJECT_COMPUTED_PROPERTY(State, QQmlListProperty<QObject>, m_childrenComputedProperty,
58 &State::childrenActualCalculation);
59};
60
61QT_END_NAMESPACE
62
63#endif
64

source code of qtscxml/src/statemachineqml/state_p.h