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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 <QtCore/qmetaobject.h>
#include <QtCore/qdebug.h>
#include <qmlexpression.h>
#include <private/qmldebugservice_p.h>
#include <qmlcontext.h>
#include <qml.h>
#include <private/qmlwatcher_p.h>
QT_BEGIN_NAMESPACE
class QmlWatchProxy : public QObject
{
Q_OBJECT
public:
QmlWatchProxy(int id,
QObject *object,
int debugId,
const QMetaProperty &prop,
QmlWatcher *parent = 0);
QmlWatchProxy(int id,
QmlExpression *exp,
int debugId,
QmlWatcher *parent = 0);
public slots:
void notifyValueChanged();
private:
friend class QmlWatcher;
int m_id;
QmlWatcher *m_watch;
QObject *m_object;
int m_debugId;
QMetaProperty m_property;
QmlExpression *m_expr;
};
QmlWatchProxy::QmlWatchProxy(int id,
QmlExpression *exp,
int debugId,
QmlWatcher *parent)
: QObject(parent), m_id(id), m_watch(parent), m_object(0), m_debugId(debugId), m_expr(exp)
{
QObject::connect(m_expr, SIGNAL(valueChanged()), this, SLOT(notifyValueChanged()));
}
QmlWatchProxy::QmlWatchProxy(int id,
QObject *object,
int debugId,
const QMetaProperty &prop,
QmlWatcher *parent)
: QObject(parent), m_id(id), m_watch(parent), m_object(object), m_debugId(debugId), m_property(prop), m_expr(0)
{
static int refreshIdx = -1;
if(refreshIdx == -1)
refreshIdx = QmlWatchProxy::staticMetaObject.indexOfMethod("notifyValueChanged()");
if (prop.hasNotifySignal())
QMetaObject::connect(m_object, prop.notifySignalIndex(), this, refreshIdx);
}
void QmlWatchProxy::notifyValueChanged()
{
QVariant v;
if (m_expr)
v = m_expr->value();
else
v = m_property.read(m_object);
emit m_watch->propertyChanged(m_id, m_debugId, m_property, v);
}
QmlWatcher::QmlWatcher(QObject *parent)
: QObject(parent)
{
}
bool QmlWatcher::addWatch(int id, quint32 debugId)
{
QObject *object = QmlDebugService::objectForId(debugId);
if (object) {
int propCount = object->metaObject()->propertyCount();
for (int ii=0; ii<propCount; ii++)
addPropertyWatch(id, object, debugId, object->metaObject()->property(ii));
return true;
}
return false;
}
bool QmlWatcher::addWatch(int id, quint32 debugId, const QByteArray &property)
{
QObject *object = QmlDebugService::objectForId(debugId);
if (object) {
int index = object->metaObject()->indexOfProperty(property.constData());
if (index >= 0) {
addPropertyWatch(id, object, debugId, object->metaObject()->property(index));
return true;
}
}
return false;
}
bool QmlWatcher::addWatch(int id, quint32 objectId, const QString &expr)
{
QObject *object = QmlDebugService::objectForId(objectId);
QmlContext *context = qmlContext(object);
if (context) {
QmlExpression *exprObj = new QmlExpression(context, expr, object);
QmlWatchProxy *proxy = new QmlWatchProxy(id, exprObj, objectId, this);
exprObj->setParent(proxy);
m_proxies[id].append(proxy);
proxy->notifyValueChanged();
return true;
}
return false;
}
void QmlWatcher::removeWatch(int id)
{
if (!m_proxies.contains(id))
return;
QList<QPointer<QmlWatchProxy> > proxies = m_proxies.take(id);
qDeleteAll(proxies);
}
void QmlWatcher::addPropertyWatch(int id, QObject *object, quint32 debugId, const QMetaProperty &property)
{
QmlWatchProxy *proxy = new QmlWatchProxy(id, object, debugId, property, this);
m_proxies[id].append(proxy);
proxy->notifyValueChanged();
}
QT_END_NAMESPACE
#include "qmlwatcher.moc"
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