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
|
/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt 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 http://www.qt.io/terms-conditions. For further
** information use the contact form at http://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 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qdebugmessageservice.h"
#include <private/qqmldebugconnector_p.h>
#include <QDataStream>
QT_BEGIN_NAMESPACE
const QString QDebugMessageService::s_key = QStringLiteral("DebugMessages");
void DebugMessageHandler(QtMsgType type, const QMessageLogContext &ctxt,
const QString &buf)
{
QQmlDebugConnector::service<QDebugMessageService>()->sendDebugMessage(type, ctxt, buf);
}
QDebugMessageService::QDebugMessageService(QObject *parent) :
QQmlDebugService(s_key, 2, parent), oldMsgHandler(0),
prevState(QQmlDebugService::NotConnected)
{
// don't execute stateChanged() in parallel
QMutexLocker lock(&initMutex);
if (state() == Enabled) {
oldMsgHandler = qInstallMessageHandler(DebugMessageHandler);
prevState = Enabled;
}
}
void QDebugMessageService::sendDebugMessage(QtMsgType type,
const QMessageLogContext &ctxt,
const QString &buf)
{
//We do not want to alter the message handling mechanism
//We just eavesdrop and forward the messages to a port
//only if a client is connected to it.
QByteArray message;
QQmlDebugStream ws(&message, QIODevice::WriteOnly);
ws << QByteArray("MESSAGE") << type << buf.toUtf8();
ws << QString::fromLatin1(ctxt.file).toUtf8();
ws << ctxt.line << QString::fromLatin1(ctxt.function).toUtf8();
emit messageToClient(name(), message);
if (oldMsgHandler)
(*oldMsgHandler)(type, ctxt, buf);
}
void QDebugMessageService::stateChanged(State state)
{
QMutexLocker lock(&initMutex);
if (state != Enabled && prevState == Enabled) {
QtMessageHandler handler = qInstallMessageHandler(oldMsgHandler);
// has our handler been overwritten in between?
if (handler != DebugMessageHandler)
qInstallMessageHandler(handler);
} else if (state == Enabled && prevState != Enabled) {
oldMsgHandler = qInstallMessageHandler(DebugMessageHandler);
}
prevState = state;
}
QT_END_NAMESPACE
|