1 | /**************************************************************************** |
2 | ** |
3 | ** Copyright (C) 2018 The Qt Company Ltd. |
4 | ** Contact: https://www.qt.io/licensing/ |
5 | ** |
6 | ** This file is part of the Qt Virtual Keyboard module of the Qt Toolkit. |
7 | ** |
8 | ** $QT_BEGIN_LICENSE:GPL$ |
9 | ** Commercial License Usage |
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16 | ** |
17 | ** GNU General Public License Usage |
18 | ** Alternatively, this file may be used under the terms of the GNU |
19 | ** General Public License version 3 or (at your option) any later version |
20 | ** approved by the KDE Free Qt Foundation. The licenses are as published by |
21 | ** the Free Software Foundation and appearing in the file LICENSE.GPL3 |
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25 | ** |
26 | ** $QT_END_LICENSE$ |
27 | ** |
28 | ****************************************************************************/ |
29 | |
30 | #include "extensionloader.h" |
31 | #include <QtVirtualKeyboard/QVirtualKeyboardExtensionPlugin> |
32 | #include <QtCore/private/qfactoryloader_p.h> |
33 | |
34 | QT_BEGIN_NAMESPACE |
35 | namespace QtVirtualKeyboard { |
36 | |
37 | QMutex ExtensionLoader::m_mutex; |
38 | QMultiHash<QString, QJsonObject> ExtensionLoader::m_plugins; |
39 | bool ExtensionLoader::m_alreadyDiscovered = false; |
40 | |
41 | Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader, |
42 | (QVirtualKeyboardExtensionPluginFactoryInterface_iid, |
43 | QLatin1String("/virtualkeyboard" ))) |
44 | |
45 | QMultiHash<QString, QJsonObject> ExtensionLoader::plugins(bool reload) |
46 | { |
47 | QMutexLocker lock(&m_mutex); |
48 | |
49 | if (reload == true) |
50 | m_alreadyDiscovered = false; |
51 | |
52 | if (!m_alreadyDiscovered) { |
53 | loadPluginMetadata(); |
54 | m_alreadyDiscovered = true; |
55 | } |
56 | return m_plugins; |
57 | } |
58 | |
59 | QJsonObject ExtensionLoader::loadMeta(const QString &extensionName) |
60 | { |
61 | QJsonObject metaData; |
62 | metaData = QJsonObject(); |
63 | metaData.insert(key: QLatin1String("index" ), value: -1); |
64 | |
65 | QList<QJsonObject> candidates = ExtensionLoader::plugins().values(akey: extensionName); |
66 | |
67 | int versionFound = -1; |
68 | int idx = -1; |
69 | |
70 | // figure out which version of the plugin we want |
71 | for (int i = 0; i < candidates.size(); ++i) { |
72 | QJsonObject meta = candidates[i]; |
73 | if (meta.contains(key: QLatin1String("Version" )) |
74 | && meta.value(key: QLatin1String("Version" )).isDouble()) { |
75 | int ver = int(meta.value(key: QLatin1String("Version" )).toDouble()); |
76 | if (ver > versionFound) { |
77 | versionFound = ver; |
78 | idx = i; |
79 | } |
80 | } |
81 | } |
82 | |
83 | if (idx != -1) { |
84 | metaData = candidates[idx]; |
85 | return metaData; |
86 | } |
87 | return QJsonObject(); |
88 | } |
89 | |
90 | QVirtualKeyboardExtensionPlugin *ExtensionLoader::loadPlugin(QJsonObject metaData) |
91 | { |
92 | if (int(metaData.value(key: QLatin1String("index" )).toDouble()) < 0) { |
93 | return NULL; |
94 | } |
95 | int idx = int(metaData.value(key: QLatin1String("index" )).toDouble()); |
96 | return qobject_cast<QVirtualKeyboardExtensionPlugin *>(object: loader()->instance(index: idx)); |
97 | } |
98 | |
99 | void ExtensionLoader::loadPluginMetadata() |
100 | { |
101 | QFactoryLoader *l = loader(); |
102 | QList<QJsonObject> meta = l->metaData(); |
103 | for (int i = 0; i < meta.size(); ++i) { |
104 | QJsonObject obj = meta.at(i).value(key: QLatin1String("MetaData" )).toObject(); |
105 | QString name = obj.value(key: QLatin1String("Name" )).toString(); |
106 | if (!name.isEmpty()) { |
107 | obj.insert(key: QLatin1String("index" ), value: i); |
108 | m_plugins.insert(akey: name, avalue: obj); |
109 | } |
110 | } |
111 | } |
112 | |
113 | } // namespace QtVirtualKeyboard |
114 | QT_END_NAMESPACE |
115 | |