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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. |
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8 | ** $QT_BEGIN_LICENSE:LGPL$ |
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17 | ** GNU Lesser General Public License Usage |
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19 | ** General Public License version 3 as published by the Free Software |
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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 |
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38 | ****************************************************************************/ |
39 | |
40 | #include "qqmlenginecontrolservice.h" |
41 | #include <private/qqmldebugconnector_p.h> |
42 | #include <private/qversionedpacket_p.h> |
43 | #include <QJSEngine> |
44 | |
45 | QT_BEGIN_NAMESPACE |
46 | |
47 | using QQmlDebugPacket = QVersionedPacket<QQmlDebugConnector>; |
48 | |
49 | QQmlEngineControlServiceImpl::QQmlEngineControlServiceImpl(QObject *parent) : |
50 | QQmlEngineControlService(1, parent) |
51 | { |
52 | blockingMode = QQmlDebugConnector::instance()->blockingMode(); |
53 | } |
54 | |
55 | void QQmlEngineControlServiceImpl::messageReceived(const QByteArray &message) |
56 | { |
57 | QMutexLocker lock(&dataMutex); |
58 | QQmlDebugPacket d(message); |
59 | qint32 command; |
60 | qint32 engineId; |
61 | d >> command >> engineId; |
62 | QJSEngine *engine = qobject_cast<QJSEngine *>(object: objectForId(id: engineId)); |
63 | if (command == StartWaitingEngine && startingEngines.contains(t: engine)) { |
64 | startingEngines.removeOne(t: engine); |
65 | emit attachedToEngine(engine); |
66 | } else if (command == StopWaitingEngine && stoppingEngines.contains(t: engine)) { |
67 | stoppingEngines.removeOne(t: engine); |
68 | emit detachedFromEngine(engine); |
69 | } |
70 | } |
71 | |
72 | void QQmlEngineControlServiceImpl::engineAboutToBeAdded(QJSEngine *engine) |
73 | { |
74 | QMutexLocker lock(&dataMutex); |
75 | if (blockingMode && state() == Enabled) { |
76 | Q_ASSERT(!stoppingEngines.contains(engine)); |
77 | Q_ASSERT(!startingEngines.contains(engine)); |
78 | startingEngines.append(t: engine); |
79 | sendMessage(type: EngineAboutToBeAdded, engine); |
80 | } else { |
81 | emit attachedToEngine(engine); |
82 | } |
83 | } |
84 | |
85 | void QQmlEngineControlServiceImpl::engineAboutToBeRemoved(QJSEngine *engine) |
86 | { |
87 | QMutexLocker lock(&dataMutex); |
88 | if (blockingMode && state() == Enabled) { |
89 | Q_ASSERT(!stoppingEngines.contains(engine)); |
90 | Q_ASSERT(!startingEngines.contains(engine)); |
91 | stoppingEngines.append(t: engine); |
92 | sendMessage(type: EngineAboutToBeRemoved, engine); |
93 | } else { |
94 | emit detachedFromEngine(engine); |
95 | } |
96 | } |
97 | |
98 | void QQmlEngineControlServiceImpl::engineAdded(QJSEngine *engine) |
99 | { |
100 | if (state() == Enabled) { |
101 | QMutexLocker lock(&dataMutex); |
102 | Q_ASSERT(!startingEngines.contains(engine)); |
103 | Q_ASSERT(!stoppingEngines.contains(engine)); |
104 | sendMessage(type: EngineAdded, engine); |
105 | } |
106 | } |
107 | |
108 | void QQmlEngineControlServiceImpl::engineRemoved(QJSEngine *engine) |
109 | { |
110 | if (state() == Enabled) { |
111 | QMutexLocker lock(&dataMutex); |
112 | Q_ASSERT(!startingEngines.contains(engine)); |
113 | Q_ASSERT(!stoppingEngines.contains(engine)); |
114 | sendMessage(type: EngineRemoved, engine); |
115 | } |
116 | } |
117 | |
118 | void QQmlEngineControlServiceImpl::sendMessage(QQmlEngineControlServiceImpl::MessageType type, |
119 | QJSEngine *engine) |
120 | { |
121 | QQmlDebugPacket d; |
122 | d << static_cast<qint32>(type) << idForObject(engine); |
123 | emit messageToClient(name: name(), message: d.data()); |
124 | } |
125 | |
126 | void QQmlEngineControlServiceImpl::stateChanged(State) |
127 | { |
128 | // We flush everything for any kind of state change, to avoid complicated timing issues. |
129 | QMutexLocker lock(&dataMutex); |
130 | for (QJSEngine *engine : qAsConst(t&: startingEngines)) |
131 | emit attachedToEngine(engine); |
132 | startingEngines.clear(); |
133 | for (QJSEngine *engine : qAsConst(t&: stoppingEngines)) |
134 | emit detachedFromEngine(engine); |
135 | stoppingEngines.clear(); |
136 | } |
137 | |
138 | QT_END_NAMESPACE |
139 | |