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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** 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 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qmlenginedebug_p.h"
#include "qmlboundsignal_p.h"
#include <QtCore/qdebug.h>
#include <QtCore/qmetaobject.h>
#include <qmlengine.h>
#include <qmlmetatype.h>
#include <qmlmetaproperty.h>
#include <qmlbinding.h>
#include "qmlcontext_p.h"
#include "qmlwatcher_p.h"
QT_BEGIN_NAMESPACE
QList<QmlEngine *> QmlEngineDebugServer::m_engines;
QmlEngineDebugServer::QmlEngineDebugServer(QObject *parent)
: QmlDebugService(QLatin1String("QmlEngine"), parent),
m_watch(new QmlWatcher(this))
{
QObject::connect(m_watch, SIGNAL(propertyChanged(int,int,QMetaProperty,QVariant)),
this, SLOT(propertyChanged(int,int,QMetaProperty,QVariant)));
}
QDataStream &operator<<(QDataStream &ds,
const QmlEngineDebugServer::QmlObjectData &data)
{
ds << data.url << data.lineNumber << data.columnNumber << data.objectName
<< data.objectType << data.objectId << data.contextId;
return ds;
}
QDataStream &operator>>(QDataStream &ds,
QmlEngineDebugServer::QmlObjectData &data)
{
ds >> data.url >> data.lineNumber >> data.columnNumber >> data.objectName
>> data.objectType >> data.objectId >> data.contextId;
return ds;
}
QDataStream &operator<<(QDataStream &ds,
const QmlEngineDebugServer::QmlObjectProperty &data)
{
ds << (int)data.type << data.name << data.value << data.valueTypeName
<< data.binding << data.hasNotifySignal;
return ds;
}
QDataStream &operator>>(QDataStream &ds,
QmlEngineDebugServer::QmlObjectProperty &data)
{
int type;
ds >> type >> data.name >> data.value >> data.valueTypeName
>> data.binding >> data.hasNotifySignal;
data.type = (QmlEngineDebugServer::QmlObjectProperty::Type)type;
return ds;
}
QmlEngineDebugServer::QmlObjectProperty
QmlEngineDebugServer::propertyData(QObject *obj, int propIdx)
{
QmlObjectProperty rv;
QMetaProperty prop = obj->metaObject()->property(propIdx);
rv.type = QmlObjectProperty::Unknown;
rv.valueTypeName = QString::fromUtf8(prop.typeName());
rv.name = QString::fromUtf8(prop.name());
rv.hasNotifySignal = prop.hasNotifySignal();
QmlAbstractBinding *binding = QmlMetaProperty(obj, rv.name).binding();
if (binding)
rv.binding = binding->expression();
QVariant value = prop.read(obj);
rv.value = valueContents(value);
if (prop.type() < QVariant::UserType) {
rv.type = QmlObjectProperty::Basic;
} else if (QmlMetaType::isObject(prop.userType())) {
rv.type = QmlObjectProperty::Object;
} else if (QmlMetaType::isList(prop.userType()) ||
QmlMetaType::isQmlList(prop.userType())) {
rv.type = QmlObjectProperty::List;
}
return rv;
}
QVariant QmlEngineDebugServer::valueContents(const QVariant &value) const
{
if (value.type() < QVariant::UserType)
return value;
int userType = value.userType();
if (QmlMetaType::isList(userType) || QmlMetaType::isQmlList(userType)) {
int count = QmlMetaType::listCount(value);
QVariantList contents;
for (int i=0; i<count; i++)
contents << valueContents(QmlMetaType::listAt(value, i));
return contents;
} else if (QmlMetaType::isObject(userType)) {
QObject *o = QmlMetaType::toQObject(value);
if (o) {
QString name = o->objectName();
if (name.isEmpty())
name = QLatin1String("<unnamed object>");
return name;
}
}
return QLatin1String("<unknown value>");
}
void QmlEngineDebugServer::buildObjectDump(QDataStream &message,
QObject *object, bool recur)
{
message << objectData(object);
// Some children aren't added to an object until particular properties are read
// - e.g. child state objects aren't added until the 'states' property is read -
// but this should only affect internal objects that aren't shown by the
// debugger anyway.
QObjectList children = object->children();
int childrenCount = children.count();
for (int ii = 0; ii < children.count(); ++ii) {
if (qobject_cast<QmlContext*>(children[ii]) || QmlBoundSignal::cast(children[ii]))
--childrenCount;
}
message << childrenCount << recur;
QList<QmlObjectProperty> fakeProperties;
for (int ii = 0; ii < children.count(); ++ii) {
QObject *child = children.at(ii);
if (qobject_cast<QmlContext*>(child))
continue;
QmlBoundSignal *signal = QmlBoundSignal::cast(child);
if (signal) {
QmlObjectProperty prop;
prop.type = QmlObjectProperty::SignalProperty;
prop.hasNotifySignal = false;
QmlExpression *expr = signal->expression();
if (expr) {
prop.value = expr->expression();
QObject *scope = expr->scopeObject();
if (scope) {
QString sig = scope->metaObject()->method(signal->index()).signature();
int lparen = sig.indexOf(QLatin1Char('('));
if (lparen >= 0) {
QString methodName = sig.mid(0, lparen);
prop.name = QLatin1String("on") + methodName[0].toUpper()
+ methodName.mid(1);
}
}
}
fakeProperties << prop;
} else {
if (recur)
buildObjectDump(message, child, recur);
else
message << objectData(child);
}
}
message << (object->metaObject()->propertyCount() + fakeProperties.count());
for (int ii = 0; ii < object->metaObject()->propertyCount(); ++ii)
message << propertyData(object, ii);
for (int ii = 0; ii < fakeProperties.count(); ++ii)
message << fakeProperties[ii];
}
void QmlEngineDebugServer::buildObjectList(QDataStream &message,
QmlContext *ctxt)
{
QmlContextPrivate *p = (QmlContextPrivate *)QObjectPrivate::get(ctxt);
QString ctxtName = ctxt->objectName();
int ctxtId = QmlDebugService::idForObject(ctxt);
message << ctxtName << ctxtId;
int count = 0;
for (QSet<QmlContext *>::ConstIterator iter = p->childContexts.begin();
iter != p->childContexts.end(); ++iter) {
QmlContextPrivate *p = (QmlContextPrivate *)QObjectPrivate::get(*iter);
if (p->isInternal)
continue;
++count;
}
message << count;
for (QSet<QmlContext *>::ConstIterator iter = p->childContexts.begin();
iter != p->childContexts.end(); ++iter) {
QmlContextPrivate *p = (QmlContextPrivate *)QObjectPrivate::get(*iter);
if (p->isInternal)
continue;
buildObjectList(message, *iter);
}
// Clean deleted objects
for (int ii = 0; ii < p->instances.count(); ++ii) {
if (!p->instances.at(ii)) {
p->instances.removeAt(ii);
--ii;
}
}
message << p->instances.count();
for (int ii = 0; ii < p->instances.count(); ++ii) {
message << objectData(p->instances.at(ii));
}
}
QmlEngineDebugServer::QmlObjectData
QmlEngineDebugServer::objectData(QObject *object)
{
QmlDeclarativeData *ddata = QmlDeclarativeData::get(object);
QmlObjectData rv;
if (ddata) {
rv.url = ddata->outerContext->baseUrl();
rv.lineNumber = ddata->lineNumber;
rv.columnNumber = ddata->columnNumber;
} else {
rv.lineNumber = -1;
rv.columnNumber = -1;
}
rv.objectName = object->objectName();
rv.objectId = QmlDebugService::idForObject(object);
rv.contextId = QmlDebugService::idForObject(qmlContext(object));
QmlType *type = QmlMetaType::qmlType(object->metaObject());
if (type) {
QString typeName = type->qmlTypeName();
int lastSlash = typeName.lastIndexOf(QLatin1Char('/'));
rv.objectType = lastSlash < 0 ? typeName : typeName.mid(lastSlash+1);
} else {
rv.objectType = QString::fromUtf8(object->metaObject()->className());
}
return rv;
}
void QmlEngineDebugServer::messageReceived(const QByteArray &message)
{
QDataStream ds(message);
QByteArray type;
ds >> type;
//qDebug() << "QmlEngineDebugServer::messageReceived()" << type;
if (type == "LIST_ENGINES") {
int queryId;
ds >> queryId;
QByteArray reply;
QDataStream rs(&reply, QIODevice::WriteOnly);
rs << QByteArray("LIST_ENGINES_R");
rs << queryId << m_engines.count();
for (int ii = 0; ii < m_engines.count(); ++ii) {
QmlEngine *engine = m_engines.at(ii);
QString engineName = engine->objectName();
int engineId = QmlDebugService::idForObject(engine);
rs << engineName << engineId;
}
sendMessage(reply);
} else if (type == "LIST_OBJECTS") {
int queryId;
int engineId = -1;
ds >> queryId >> engineId;
QmlEngine *engine =
qobject_cast<QmlEngine *>(QmlDebugService::objectForId(engineId));
QByteArray reply;
QDataStream rs(&reply, QIODevice::WriteOnly);
rs << QByteArray("LIST_OBJECTS_R") << queryId;
if (engine)
buildObjectList(rs, engine->rootContext());
sendMessage(reply);
} else if (type == "FETCH_OBJECT") {
int queryId;
int objectId;
bool recurse;
ds >> queryId >> objectId >> recurse;
QObject *object = QmlDebugService::objectForId(objectId);
QByteArray reply;
QDataStream rs(&reply, QIODevice::WriteOnly);
rs << QByteArray("FETCH_OBJECT_R") << queryId;
if (object)
buildObjectDump(rs, object, recurse);
sendMessage(reply);
} else if (type == "WATCH_OBJECT") {
int queryId;
int objectId;
ds >> queryId >> objectId;
bool ok = m_watch->addWatch(queryId, objectId);
QByteArray reply;
QDataStream rs(&reply, QIODevice::WriteOnly);
rs << QByteArray("WATCH_OBJECT_R") << queryId << objectId << ok;
sendMessage(reply);
} else if (type == "WATCH_PROPERTY") {
int queryId;
int objectId;
QByteArray property;
ds >> queryId >> objectId >> property;
bool ok = m_watch->addWatch(queryId, objectId, property);
QByteArray reply;
QDataStream rs(&reply, QIODevice::WriteOnly);
rs << QByteArray("WATCH_PROPERTY_R") << queryId << ok;
sendMessage(reply);
} else if (type == "WATCH_EXPR_OBJECT") {
int queryId;
int debugId;
QString expr;
ds >> queryId >> debugId >> expr;
bool ok = m_watch->addWatch(queryId, debugId, expr);
QByteArray reply;
QDataStream rs(&reply, QIODevice::WriteOnly);
rs << QByteArray("WATCH_EXPR_OBJECT_R") << queryId << ok;
sendMessage(reply);
} else if (type == "NO_WATCH") {
int queryId;
ds >> queryId;
m_watch->removeWatch(queryId);
} else if (type == "EVAL_EXPRESSION") {
int queryId;
int objectId;
QString expr;
ds >> queryId >> objectId >> expr;
QObject *object = QmlDebugService::objectForId(objectId);
QmlContext *context = qmlContext(object);
QVariant result;
if (object && context) {
QmlExpression *exprObj = new QmlExpression(context, expr, object);
bool undefined = false;
QVariant value = exprObj->value(&undefined);
if (undefined)
result = QLatin1String("<undefined>");
else
result = valueContents(value);
delete exprObj;
} else {
result = QLatin1String("<unknown context>");
}
QByteArray reply;
QDataStream rs(&reply, QIODevice::WriteOnly);
rs << QByteArray("EVAL_EXPRESSION_R") << queryId << result;
sendMessage(reply);
}
}
void QmlEngineDebugServer::propertyChanged(int id, int objectId, const QMetaProperty &property, const QVariant &value)
{
QByteArray reply;
QDataStream rs(&reply, QIODevice::WriteOnly);
rs << QByteArray("UPDATE_WATCH") << id << objectId << QByteArray(property.name()) << valueContents(value);
sendMessage(reply);
}
void QmlEngineDebugServer::addEngine(QmlEngine *engine)
{
Q_ASSERT(engine);
Q_ASSERT(!m_engines.contains(engine));
m_engines.append(engine);
}
void QmlEngineDebugServer::remEngine(QmlEngine *engine)
{
Q_ASSERT(engine);
Q_ASSERT(m_engines.contains(engine));
m_engines.removeAll(engine);
}
QT_END_NAMESPACE
|