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
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Mobility Components.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "proxyobject_p.h"
#include "qmetaobjectbuilder_p.h"
#include "qremoteserviceregisterentry_p.h"
#include <QDebug>
QTM_BEGIN_NAMESPACE
class QServiceProxyPrivate
{
public:
QByteArray metadata;
QMetaObject* meta;
ObjectEndPoint* endPoint;
};
QServiceProxy::QServiceProxy(const QByteArray& metadata, ObjectEndPoint* endPoint, QObject* parent)
: QObject(parent)
{
Q_ASSERT(endPoint);
d = new QServiceProxyPrivate();
d->metadata = metadata;
d->meta = 0;
d->endPoint = endPoint;
QDataStream stream(d->metadata);
QMetaObjectBuilder builder;
QMap<QByteArray, const QMetaObject*> refs;
builder.deserialize(stream, refs);
if (stream.status() != QDataStream::Ok) {
qWarning() << "Invalid metaObject for service received";
} else {
QMetaMethodBuilder b = builder.addSignal("errorUnrecoverableIPCFault(QService::UnrecoverableIPCError)");
// After all methods are filled in, otherwise qvector won't be big enough
localSignals.fill(false, builder.methodCount());
localSignals.replace(b.index(), true); // Call activate locally
d->meta = builder.toMetaObject();
}
}
QServiceProxy::~QServiceProxy()
{
if (d->meta)
qFree(d->meta);
delete d;
}
//provide custom Q_OBJECT implementation
const QMetaObject* QServiceProxy::metaObject() const
{
return d->meta;
}
int QServiceProxy::qt_metacall(QMetaObject::Call c, int id, void **a)
{
id = QObject::qt_metacall(c, id, a);
if (id < 0 || !d->meta)
return id;
if(localSignals.at(id)){
QMetaObject::activate(this, d->meta, id, a);
return id;
}
if (c == QMetaObject::InvokeMetaMethod) {
const int mcount = d->meta->methodCount() - d->meta->methodOffset();
const int metaIndex = id + d->meta->methodOffset();
QMetaMethod method = d->meta->method(metaIndex);
const int returnType = QMetaType::type(method.typeName());
//process arguments
const QList<QByteArray> pTypes = method.parameterTypes();
const int pTypesCount = pTypes.count();
QVariantList args ;
if (pTypesCount > 10) {
qWarning() << "Cannot call" << method.signature() << ". More than 10 parameter.";
return id;
}
for (int i=0; i < pTypesCount; i++) {
const QByteArray& t = pTypes[i];
int variantType = QVariant::nameToType(t);
if (variantType == QVariant::UserType)
variantType = QMetaType::type(t);
if (t == "QVariant") { //ignore whether QVariant is declared as metatype
args << *reinterpret_cast<const QVariant(*)>(a[i+1]);
} else if ( variantType == 0 ){
qWarning("%s: argument %s has unknown type. Use qRegisterMetaType to register it.",
method.signature(), t.data());
return id;
} else {
args << QVariant(variantType, a[i+1]);
}
}
//QVariant looks the same as Void type. we need to distinguish them
if (returnType == QMetaType::Void && strcmp(method.typeName(),"QVariant") ) {
d->endPoint->invokeRemote(metaIndex, args, returnType);
} else {
//TODO: ugly but works
//add +1 if we have a variant return type to avoid triggering of void
//code path
//invokeRemote() parameter list needs review
QVariant result = d->endPoint->invokeRemote(metaIndex, args,
returnType==0 ? returnType+1: returnType);
if(result.type() != QVariant::Invalid){
if (returnType != 0 && strcmp(method.typeName(),"QVariant")) {
QByteArray buffer;
QDataStream stream(&buffer, QIODevice::ReadWrite);
QMetaType::save(stream, returnType, result.constData());
stream.device()->seek(0);
QMetaType::load(stream, returnType, a[0]);
} else {
if (a[0]) *reinterpret_cast< QVariant*>(a[0]) = result;
}
}
}
id-=mcount;
} else if ( c == QMetaObject::ReadProperty
|| c == QMetaObject::WriteProperty
|| c == QMetaObject::ResetProperty ) {
const int pCount = d->meta->propertyCount() - d->meta->propertyOffset();
const int metaIndex = id + d->meta->propertyOffset();
QMetaProperty property = d->meta->property(metaIndex);
if (property.isValid()) {
int pType = property.type();
if (pType == QVariant::UserType)
pType = QMetaType::type(property.typeName());
QVariant arg;
if ( c == QMetaObject::WriteProperty ) {
if (pType == QVariant::Invalid && QByteArray(property.typeName()) == "QVariant")
arg = *reinterpret_cast<const QVariant(*)>(a[0]);
else if (pType == 0) {
qWarning("%s: property %s has unkown type", property.name(), property.typeName());
return id;
} else {
arg = QVariant(pType, a[0]);
}
}
QVariant result;
if (c == QMetaObject::ReadProperty) {
result = d->endPoint->invokeRemoteProperty(metaIndex, arg, pType, c);
//wrap result for client
if (pType != 0) {
QByteArray buffer;
QDataStream stream(&buffer, QIODevice::ReadWrite);
QMetaType::save(stream, pType, result.constData());
stream.device()->seek(0);
QMetaType::load(stream, pType, a[0]);
} else {
if (a[0]) *reinterpret_cast< QVariant*>(a[0]) = result;
}
} else {
d->endPoint->invokeRemoteProperty(metaIndex, arg, pType, c);
}
}
id-=pCount;
} else if ( c == QMetaObject::QueryPropertyDesignable
|| c == QMetaObject::QueryPropertyScriptable
|| c == QMetaObject::QueryPropertyStored
|| c == QMetaObject::QueryPropertyEditable
|| c == QMetaObject::QueryPropertyUser )
{
//Nothing to do?
//These values are part of the transferred meta object already
} else {
//TODO
qWarning() << "MetaCall type" << c << "not yet handled";
}
return id;
}
void *QServiceProxy::qt_metacast(const char* className)
{
if (!className) return 0;
//this object should not be castable to anything but QObject
return QObject::qt_metacast(className);
}
QTM_END_NAMESPACE
|
