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
|
/**
* \file optional_argument.h
* \brief OptionalArgument struct header file.
* Copyright (c) 2013, Ford Motor Company
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following
* disclaimer in the documentation and/or other materials provided with the
* distribution.
*
* Neither the name of the Ford Motor Company nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SRC_COMPONENTS_QT_HMI_QML_PLUGINS_DBUS_ADAPTER_OPTIONAL_ARGUMENT_H_
#define SRC_COMPONENTS_QT_HMI_QML_PLUGINS_DBUS_ADAPTER_OPTIONAL_ARGUMENT_H_
#include "qt_version.h"
#include <QtDBus/QDBusArgument>
template<class T>
struct OptionalArgument {
T val;
bool presence;
explicit OptionalArgument(const T& value)
: val(value),
presence(true) {}
OptionalArgument()
: presence(false) {}
};
template<class T>
inline
QDBusArgument& operator << (QDBusArgument& arg, const OptionalArgument<T>& o) {
arg.beginStructure();
arg << o.presence << o.val;
arg.endStructure();
return arg;
}
template<class T>
inline
const QDBusArgument& operator >> (const QDBusArgument& arg, OptionalArgument<T>& o) {
arg.beginStructure();
arg >> o.presence >> o.val;
arg.endStructure();
return arg;
}
template<class T>
inline
bool VariantToValue(const QVariant& variant, OptionalArgument<T>& o) {
if (variant.isNull()) {
o.presence = false;
return true;
}
o.presence = true;
return VariantToValue(variant, o.val);
}
#if QT_4
Q_DECLARE_METATYPE(QList<int>)
#endif // QT_4
Q_DECLARE_METATYPE(OptionalArgument<int>)
Q_DECLARE_METATYPE(OptionalArgument<QString>)
Q_DECLARE_METATYPE(OptionalArgument<bool>)
Q_DECLARE_METATYPE(OptionalArgument<double>)
Q_DECLARE_METATYPE(OptionalArgument<QList<int> >)
Q_DECLARE_METATYPE(OptionalArgument<QStringList>)
Q_DECLARE_METATYPE(OptionalArgument<QList<bool> >)
Q_DECLARE_METATYPE(OptionalArgument<QList<double> >)
#endif // SRC_COMPONENTS_QT_HMI_QML_PLUGINS_DBUS_ADAPTER_OPTIONAL_ARGUMENT_H_
|
