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 QtCore 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 QPLUGINLOADER_H
41#define QPLUGINLOADER_H
42
43#include <QtCore/qglobal.h>
44#if QT_CONFIG(library)
45#include <QtCore/qlibrary.h>
46#endif
47#include <QtCore/qplugin.h>
48
49QT_BEGIN_NAMESPACE
50
51#if QT_CONFIG(library)
52
53class QLibraryPrivate;
54class QJsonObject;
55
56class Q_CORE_EXPORT QPluginLoader : public QObject
57{
58 Q_OBJECT
59 Q_PROPERTY(QString fileName READ fileName WRITE setFileName)
60 Q_PROPERTY(QLibrary::LoadHints loadHints READ loadHints WRITE setLoadHints)
61public:
62 explicit QPluginLoader(QObject *parent = nullptr);
63 explicit QPluginLoader(const QString &fileName, QObject *parent = nullptr);
64 ~QPluginLoader();
65
66 QObject *instance();
67 QJsonObject metaData() const;
68
69 static QObjectList staticInstances();
70 static QVector<QStaticPlugin> staticPlugins();
71
72 bool load();
73 bool unload();
74 bool isLoaded() const;
75
76 void setFileName(const QString &fileName);
77 QString fileName() const;
78
79 QString errorString() const;
80
81 void setLoadHints(QLibrary::LoadHints loadHints);
82 QLibrary::LoadHints loadHints() const;
83
84private:
85 QLibraryPrivate *d;
86 bool did_load;
87 Q_DISABLE_COPY(QPluginLoader)
88};
89
90#else
91
92class Q_CORE_EXPORT QPluginLoader
93{
94public:
95 static QObjectList staticInstances();
96 static QVector<QStaticPlugin> staticPlugins();
97};
98
99#endif // QT_CONFIG(library)
100
101QT_END_NAMESPACE
102
103#endif //QPLUGINLOADER_H
104

source code of qtbase/src/corelib/plugin/qpluginloader.h