1/****************************************************************************
2**
3** Copyright (C) 2016 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the QtQml module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** GNU Lesser General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU Lesser
19** General Public License version 3 as published by the Free Software
20** Foundation and appearing in the file LICENSE.LGPL3 included in the
21** packaging of this file. Please review the following information to
22** ensure the GNU Lesser General Public License version 3 requirements
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
24**
25** GNU General Public License Usage
26** Alternatively, this file may be used under the terms of the GNU
27** General Public License version 2.0 or (at your option) the GNU General
28** Public license version 3 or any later version approved by the KDE Free
29** Qt Foundation. The licenses are as published by the Free Software
30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
31** included in the packaging of this file. Please review the following
32** information to ensure the GNU General Public License requirements will
33** be met: https://www.gnu.org/licenses/gpl-2.0.html and
34** https://www.gnu.org/licenses/gpl-3.0.html.
35**
36** $QT_END_LICENSE$
37**
38****************************************************************************/
39
40#ifndef QQMLDELAYEDCALLQUEUE_P_H
41#define QQMLDELAYEDCALLQUEUE_P_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists purely as an
48// implementation detail. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include <QtCore/qglobal.h>
55#include <QtCore/qobject.h>
56#include <QtCore/qmetaobject.h>
57#include <QtCore/qmetatype.h>
58#include <private/qqmlguard_p.h>
59#include <private/qv4context_p.h>
60
61QT_BEGIN_NAMESPACE
62
63class QQmlDelayedCallQueue : public QObject
64{
65 Q_OBJECT
66public:
67 QQmlDelayedCallQueue();
68 ~QQmlDelayedCallQueue() override;
69
70 void init(QV4::ExecutionEngine *);
71
72 QV4::ReturnedValue addUniquelyAndExecuteLater(const QV4::FunctionObject *, const QV4::Value *thisObject, const QV4::Value *argv, int argc);
73
74public Q_SLOTS:
75 void ticked();
76
77private:
78 struct DelayedFunctionCall
79 {
80 DelayedFunctionCall() {}
81 DelayedFunctionCall(QV4::PersistentValue function)
82 : m_function(function), m_guarded(false) { }
83
84 void execute(QV4::ExecutionEngine *engine) const;
85
86 QV4::PersistentValue m_function;
87 QV4::PersistentValue m_args;
88 QQmlGuard<QObject> m_objectGuard;
89 bool m_guarded;
90 };
91
92 void storeAnyArguments(DelayedFunctionCall& dfc, const QV4::Value *argv, int argc, int offset, QV4::ExecutionEngine *engine);
93 void executeAllExpired_Later();
94
95 QV4::ExecutionEngine *m_engine;
96 QVector<DelayedFunctionCall> m_delayedFunctionCalls;
97 QMetaMethod m_tickedMethod;
98 bool m_callbackOutstanding;
99};
100
101QT_END_NAMESPACE
102
103#endif // QQMLDELAYEDCALLQUEUE_P_H
104

source code of qtdeclarative/src/qml/qml/qqmldelayedcallqueue_p.h