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diff --git a/src/declarative/qml/qmlboundsignal.cpp b/src/declarative/qml/qmlboundsignal.cpp
new file mode 100644
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+++ b/src/declarative/qml/qmlboundsignal.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qmlboundsignal_p.h"
+#include "private/qmetaobjectbuilder_p.h"
+#include "private/qmlengine_p.h"
+#include "private/qmlcontext_p.h"
+#include <qfxglobal.h>
+#include <qmlmetatype.h>
+#include <qml.h>
+#include <qmlcontext.h>
+
+QT_BEGIN_NAMESPACE
+
+int QmlBoundSignal::evaluateIdx = -1;
+QmlBoundSignal::QmlBoundSignal(QmlContext *ctxt, const QString &val, QObject *me, int idx, QObject *parent)
+: QmlExpressionObject(ctxt, val, me, false), _idx(idx)
+{
+    // A cached evaluation of the QmlExpressionObject::value() slot index.
+    //
+    // This is thread safe.  Although it may be updated by two threads, they
+    // will both set it to the same value - so the worst thing that can happen
+    // is that they both do the work to figure it out.  Boo hoo.
+    if (evaluateIdx == -1) evaluateIdx = QmlExpressionObject::staticMetaObject.indexOfMethod("value()");
+
+    setTrackChange(false);
+    QFx_setParent_noEvent(this, parent);
+    QMetaObject::connect(me, _idx, this, evaluateIdx);
+}
+
+QmlBoundSignalProxy::QmlBoundSignalProxy(QmlContext *ctxt, const QString &val, QObject *me, int idx, QObject *parent)
+: QmlBoundSignal(ctxt, val, me, idx, parent) 
+{
+    QMetaMethod signal = me->metaObject()->method(idx);
+
+    params = new QmlBoundSignalParameters(signal, this);
+
+    ctxt->d_func()->addDefaultObject(params, QmlContextPrivate::HighPriority);
+}
+
+int QmlBoundSignalProxy::qt_metacall(QMetaObject::Call c, int id, void **a)
+{
+    if (c == QMetaObject::InvokeMetaMethod && id == evaluateIdx) {
+        params->setValues(a);
+        value();
+        params->clearValues();
+        return -1;
+    } else {
+        return QmlBoundSignal::qt_metacall(c, id, a);
+    }
+}
+
+#include <QDebug>
+QmlBoundSignalParameters::QmlBoundSignalParameters(const QMetaMethod &method, 
+                                                   QObject *parent)
+: QObject(parent), types(0), values(0)
+{
+    MetaObject *mo = new MetaObject(this);
+
+    // ### Optimize!
+    // ### Ensure only supported types are allowed, otherwise it might crash
+    QMetaObjectBuilder mob;
+    mob.setSuperClass(&QmlBoundSignalParameters::staticMetaObject);
+    mob.setClassName("QmlBoundSignalParameters");
+
+    QList<QByteArray> paramTypes = method.parameterTypes();
+    QList<QByteArray> paramNames = method.parameterNames();
+    types = new int[paramTypes.count()];
+    for (int ii = 0; ii < paramTypes.count(); ++ii) {
+        const QByteArray &type = paramTypes.at(ii);
+        const QByteArray &name = paramNames.at(ii);
+
+        if (name.isEmpty() || type.isEmpty()) {
+            types[ii] = 0;
+            continue;
+        }
+
+        QVariant::Type t = (QVariant::Type)QMetaType::type(type.constData());
+        if (QmlMetaType::isObject(t)) {
+            types[ii] = QMetaType::QObjectStar;
+            QMetaPropertyBuilder prop = mob.addProperty(name, "QObject*");
+            prop.setWritable(false);
+        } else {
+            types[ii] = t;
+            QMetaPropertyBuilder prop = mob.addProperty(name, type);
+            prop.setWritable(false);
+        }
+    }
+    myMetaObject = mob.toMetaObject();
+    *static_cast<QMetaObject *>(mo) = *myMetaObject;
+
+    d_ptr->metaObject = mo;
+}
+
+QmlBoundSignalParameters::~QmlBoundSignalParameters()
+{
+    delete [] types;
+    qFree(myMetaObject);
+}
+
+void QmlBoundSignalParameters::setValues(void **v)
+{
+    values = v;
+}
+
+void QmlBoundSignalParameters::clearValues()
+{
+    values = 0;
+}
+
+int QmlBoundSignalParameters::metaCall(QMetaObject::Call c, int id, void **a)
+{
+    if (c == QMetaObject::ReadProperty && id >= 1) {
+        QmlMetaType::copy(types[id - 1], a[0], values[id]);
+        return -1;
+    } else {
+        return qt_metacall(c, id, a);
+    }
+}
+
+QT_END_NAMESPACE