static QVariantMap readAllProperties(QObject *object, int flags)
{
QVariantMap result;
const QMetaObject *mo = object->metaObject();
// QObject has properties, so don't start from 0
for (int i = QObject::staticMetaObject.propertyCount(); i < mo->propertyCount(); ++i) {
QMetaProperty mp = mo->property(i);
// is it readable?
if (!mp.isReadable())
continue;
// is it a registered property?
int typeId = qDBusNameToTypeId(mp.typeName());
if (!typeId)
continue;
const char *signature = QDBusMetaType::typeToSignature(typeId);
if (!signature)
continue;
// is this property visible from the outside?
if ((mp.isScriptable() && flags & QDBusConnection::ExportScriptableProperties) ||
(!mp.isScriptable() && flags & QDBusConnection::ExportNonScriptableProperties)) {
// yes, it's visible
QVariant value = mp.read(object);
if (value.isValid())
result.insert(QString::fromLatin1(mp.name()), value);
}
}
return result;
}
static int writeProperty(QObject *obj, const QByteArray &property_name, QVariant value,
int propFlags = QDBusConnection::ExportAllProperties)
{
const QMetaObject *mo = obj->metaObject();
int pidx = mo->indexOfProperty(property_name);
if (pidx == -1) {
// this object has no property by that name
return PropertyNotFound;
}
QMetaProperty mp = mo->property(pidx);
// check if this property is exported
bool isScriptable = mp.isScriptable();
if (!(propFlags & QDBusConnection::ExportScriptableProperties) && isScriptable)
return PropertyNotFound;
if (!(propFlags & QDBusConnection::ExportNonScriptableProperties) && !isScriptable)
return PropertyNotFound;
// we found our property
// do we have the right type?
int id = mp.type();
if (id == QVariant::UserType) {
// dynamic type
id = qDBusNameToTypeId(mp.typeName());
if (id == -1) {
// type not registered?
qWarning("QDBusConnection: Unable to handle unregistered datatype '%s' for property '%s::%s'",
mp.typeName(), mo->className(), property_name.constData());
return PropertyWriteFailed;
}
}
if (id != 0xff && value.userType() == QDBusMetaTypeId::argument) {
// we have to demarshall before writing
void *null = 0;
QVariant other(id, null);
if (!QDBusMetaType::demarshall(qvariant_cast<QDBusArgument>(value), id, other.data())) {
qWarning("QDBusConnection: type `%s' (%d) is not registered with QtDBus. "
"Use qDBusRegisterMetaType to register it",
mp.typeName(), id);
return PropertyWriteFailed;
}
value = other;
}
// the property type here should match
return mp.write(obj, value) ? PropertyWriteSuccess : PropertyWriteFailed;
}
// calculates the metatypes for the method
// the slot must have the parameters in the following form:
// - zero or more value or const-ref parameters of any kind
// - zero or one const ref of QDBusMessage
// - zero or more non-const ref parameters
// No parameter may be a template.
// this function returns -1 if the parameters don't match the above form
// this function returns the number of *input* parameters, including the QDBusMessage one if any
// this function does not check the return type, so metaTypes[0] is always 0 and always present
// metaTypes.count() >= retval + 1 in all cases
//
// sig must be the normalised signature for the method
int qDBusParametersForMethod(const QMetaMethod &mm, QList<int>& metaTypes)
{
QDBusMetaTypeId::init();
QList<QByteArray> parameterTypes = mm.parameterTypes();
metaTypes.clear();
metaTypes.append(0); // return type
int inputCount = 0;
bool seenMessage = false;
QList<QByteArray>::ConstIterator it = parameterTypes.constBegin();
QList<QByteArray>::ConstIterator end = parameterTypes.constEnd();
for ( ; it != end; ++it) {
const QByteArray &type = *it;
if (type.endsWith('*')) {
//qWarning("Could not parse the method '%s'", mm.signature());
// pointer?
return -1;
}
if (type.endsWith('&')) {
QByteArray basictype = type;
basictype.truncate(type.length() - 1);
int id = qDBusNameToTypeId(basictype);
if (id == 0) {
//qWarning("Could not parse the method '%s'", mm.signature());
// invalid type in method parameter list
return -1;
} else if (QDBusMetaType::typeToSignature(id) == 0)
return -1;
metaTypes.append( id );
seenMessage = true; // it cannot appear anymore anyways
continue;
}
if (seenMessage) { // && !type.endsWith('&')
//qWarning("Could not parse the method '%s'", mm.signature());
// non-output parameters after message or after output params
return -1; // not allowed
}
int id = qDBusNameToTypeId(type);
if (id == 0) {
//qWarning("Could not parse the method '%s'", mm.signature());
// invalid type in method parameter list
return -1;
}
if (id == QDBusMetaTypeId::message)
seenMessage = true;
else if (QDBusMetaType::typeToSignature(id) == 0)
return -1;
metaTypes.append(id);
++inputCount;
}
return inputCount;
}
static QString generateInterfaceXml(const QMetaObject *mo, int flags, int methodOffset, int propOffset)
{
QString retval;
// start with properties:
if (flags & (QDBusConnection::ExportScriptableProperties |
QDBusConnection::ExportNonScriptableProperties)) {
for (int i = propOffset; i < mo->propertyCount(); ++i) {
static const char *accessvalues[] = {0, "read", "write", "readwrite"};
QMetaProperty mp = mo->property(i);
if (!((mp.isScriptable() && (flags & QDBusConnection::ExportScriptableProperties)) ||
(!mp.isScriptable() && (flags & QDBusConnection::ExportNonScriptableProperties))))
continue;
int access = 0;
if (mp.isReadable())
access |= 1;
if (mp.isWritable())
access |= 2;
int typeId = qDBusNameToTypeId(mp.typeName());
if (!typeId)
continue;
const char *signature = QDBusMetaType::typeToSignature(typeId);
if (!signature)
continue;
retval += QString::fromLatin1(" <property name=\"%1\" type=\"%2\" access=\"%3\"")
.arg(QLatin1String(mp.name()))
.arg(QLatin1String(signature))
.arg(QLatin1String(accessvalues[access]));
if (QDBusMetaType::signatureToType(signature) == QVariant::Invalid) {
const char *typeName = QVariant::typeToName(QVariant::Type(typeId));
retval += QString::fromLatin1(">\n <annotation name=\"com.trolltech.QtDBus.QtTypeName\" value=\"%3\"/>\n </property>\n")
.arg(typeNameToXml(typeName));
} else {
retval += QLatin1String("/>\n");
}
}
}
// now add methods:
for (int i = methodOffset; i < mo->methodCount(); ++i) {
QMetaMethod mm = mo->method(i);
QByteArray signature = mm.signature();
int paren = signature.indexOf('(');
bool isSignal;
if (mm.methodType() == QMetaMethod::Signal)
// adding a signal
isSignal = true;
else if (mm.methodType() == QMetaMethod::Slot && mm.access() == QMetaMethod::Public)
isSignal = false;
else
continue; // neither signal nor public slot
if (isSignal && !(flags & (QDBusConnection::ExportScriptableSignals |
QDBusConnection::ExportNonScriptableSignals)))
continue; // we're not exporting any signals
if (!isSignal && !(flags & (QDBusConnection::ExportScriptableSlots |
QDBusConnection::ExportNonScriptableSlots)))
continue; // we're not exporting any slots
QString xml = QString::fromLatin1(" <%1 name=\"%2\">\n")
.arg(isSignal ? QLatin1String("signal") : QLatin1String("method"))
.arg(QLatin1String(signature.left(paren)));
// check the return type first
int typeId = qDBusNameToTypeId(mm.typeName());
if (typeId) {
const char *typeName = QDBusMetaType::typeToSignature(typeId);
if (typeName) {
xml += QString::fromLatin1(" <arg type=\"%1\" direction=\"out\"/>\n")
.arg(typeNameToXml(typeName));
// do we need to describe this argument?
if (QDBusMetaType::signatureToType(typeName) == QVariant::Invalid)
xml += QString::fromLatin1(" <annotation name=\"com.trolltech.QtDBus.QtTypeName.Out0\" value=\"%1\"/>\n")
.arg(typeNameToXml(mm.typeName()));
} else
continue;
}
else if (*mm.typeName())
continue; // wasn't a valid type
QList<QByteArray> names = mm.parameterNames();
QList<int> types;
int inputCount = qDBusParametersForMethod(mm, types);
if (inputCount == -1)
continue; // invalid form
if (isSignal && inputCount + 1 != types.count())
continue; // signal with output arguments?
if (isSignal && types.at(inputCount) == QDBusMetaTypeId::message)
continue; // signal with QDBusMessage argument?
if (isSignal && mm.attributes() & QMetaMethod::Cloned)
continue; // cloned signal?
int j;
bool isScriptable = mm.attributes() & QMetaMethod::Scriptable;
for (j = 1; j < types.count(); ++j) {
// input parameter for a slot or output for a signal
if (types.at(j) == QDBusMetaTypeId::message) {
isScriptable = true;
continue;
}
QString name;
if (!names.at(j - 1).isEmpty())
name = QString::fromLatin1("name=\"%1\" ").arg(QLatin1String(names.at(j - 1)));
bool isOutput = isSignal || j > inputCount;
const char *signature = QDBusMetaType::typeToSignature(types.at(j));
xml += QString::fromLatin1(" <arg %1type=\"%2\" direction=\"%3\"/>\n")
.arg(name)
.arg(QLatin1String(signature))
.arg(isOutput ? QLatin1String("out") : QLatin1String("in"));
// do we need to describe this argument?
if (QDBusMetaType::signatureToType(signature) == QVariant::Invalid) {
const char *typeName = QVariant::typeToName( QVariant::Type(types.at(j)) );
xml += QString::fromLatin1(" <annotation name=\"com.trolltech.QtDBus.QtTypeName.%1%2\" value=\"%3\"/>\n")
.arg(isOutput ? QLatin1String("Out") : QLatin1String("In"))
.arg(isOutput ? j - 1 : j - inputCount)
.arg(typeNameToXml(typeName));
}
}
int wantedMask;
if (isScriptable)
wantedMask = isSignal ? QDBusConnection::ExportScriptableSignals
: QDBusConnection::ExportScriptableSlots;
else
wantedMask = isSignal ? QDBusConnection::ExportNonScriptableSignals
: QDBusConnection::ExportNonScriptableSlots;
if ((flags & wantedMask) != wantedMask)
continue;
if (qDBusCheckAsyncTag(mm.tag()))
// add the no-reply annotation
xml += QLatin1String(" <annotation name=\"" ANNOTATION_NO_WAIT "\""
" value=\"true\"/>\n");
retval += xml;
retval += QString::fromLatin1(" </%1>\n")
.arg(isSignal ? QLatin1String("signal") : QLatin1String("method"));
}
return retval;
}
