1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
/****************************************************************************
**
** Copyright (C) 2019 Luxoft Sweden AB
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtIvi module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL-QTAS$
** Commercial License Usage
** Licensees holding valid commercial Qt Automotive Suite 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 a written agreement between you and The Qt Company. For
** licensing terms and conditions see https://www.qt.io/terms-conditions.
** For further information use the contact form at https://www.qt.io/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 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
** SPDX-License-Identifier: LGPL-3.0
**
****************************************************************************/
#ifndef QIVIREMOTEOBJECTSOURCEHELPER_H
#define QIVIREMOTEOBJECTSOURCEHELPER_H
#include <QtCore/QObject>
#include <QtIviCore/QIviPendingReply>
#include <QtIviRemoteObjectsHelper/qiviremoteobjectpendingresult.h>
QT_BEGIN_NAMESPACE
template <class T> class QIviRemoteObjectSourceHelper
{
public:
QIviRemoteObjectSourceHelper(T *adapter, const QLoggingCategory &category = qtivi_private::qLcQtIviRoHelper())
: m_adapter(adapter)
, m_replyCounter(0)
, m_category(category)
{
qRegisterMetaType<QIviRemoteObjectPendingResult>();
}
QVariant toRemoteObjectVariant(const QVariant &variant) const
{
// QtRemoteObjects always uses QVariant::data() and passes it directly to qt_metacall. This doesn't
// work for methods/signals which take a QVariant.
// The workaround is put the QVariant in a QVariant as a container.
// QTBUG-75056
return QVariant(QMetaType(QMetaType::QVariant), &variant);
}
QVariant fromPendingReply(const QIviPendingReplyBase &pendingReply)
{
if (pendingReply.isSuccessful()) {
qCDebug(m_category) << "Returning result right away";
return pendingReply.value();
} else { //reply not yet ready or failed
const quint64 id = ++m_replyCounter;
if (pendingReply.isResultAvailable()) { // the call failed
qCDebug(m_category) << "Returning failed reply";
return QVariant::fromValue(QIviRemoteObjectPendingResult(id, true /* failed */));
}
QIviRemoteObjectPendingResult result = QIviRemoteObjectPendingResult(id, false /* failed */);
qCDebug(m_category) << "Returning a pending result: id:" << id;
QObject::connect(pendingReply.watcher(), &QIviPendingReplyWatcher::valueChanged, [this, pendingReply, id] (const QVariant &value) {
qCDebug(m_category) << "Value for pending result available: id:" << id << "value:" << value;
Q_EMIT m_adapter->pendingResultAvailable(id, pendingReply.isSuccessful(), value);
});
return QVariant::fromValue(result);
}
}
private:
T *m_adapter;
quint64 m_replyCounter;
const QLoggingCategory &m_category;
};
QT_END_NAMESPACE
#endif //QIVIREMOTEOBJECTSOURCEHELPER_H
|
