Merge branch '4.7' of scm.dev.nokia.troll.no:qt/qt-qml into 4.7-integration

* '4.7' of scm.dev.nokia.troll.no:qt/qt-qml:
  QmlDebug: Fix license headers in new ost plugin
  Fixed autotest after b4b85257ccff6ba21bcbcbd46a9f7f09884abe79
  Resolve unqualified attached properties correctly
  Adding plugin qmltooling/qmlostplugin for QML debugging over OST (USB) on Symbian.
  QmlDebug: Rename 'tcpserver' library to 'qmldbg_tcp'
  QDeclarativeDebug: Don't crash when connection is closed
  Fix so concurrent jobs produce the correct model results
  Fix uninitialized variable.

14 files changed, 753 insertions, 60 deletions

diff --git a/src/declarative/debugger/qdeclarativedebugserver.cpp b/src/declarative/debugger/qdeclarativedebugserver.cpp
index 14e7187..18258f5 100644
--- a/src/declarative/debugger/qdeclarativedebugserver.cpp
+++ b/src/declarative/debugger/qdeclarativedebugserver.cpp
@@ -91,7 +91,7 @@ public:
     QStringList clientPlugins;
     bool gotHello;
 
-    static QDeclarativeDebugServerConnection *loadConnectionPlugin();
+    static QDeclarativeDebugServerConnection *loadConnectionPlugin(const QString &pluginName);
 };
 
 QDeclarativeDebugServerPrivate::QDeclarativeDebugServerPrivate() :
@@ -113,7 +113,8 @@ void QDeclarativeDebugServerPrivate::advertisePlugins()
     connection->send(message);
 }
 
-QDeclarativeDebugServerConnection *QDeclarativeDebugServerPrivate::loadConnectionPlugin()
+QDeclarativeDebugServerConnection *QDeclarativeDebugServerPrivate::loadConnectionPlugin(
+    const QString &pluginName)
 {
     QStringList pluginCandidates;
     const QStringList paths = QCoreApplication::libraryPaths();
@@ -122,7 +123,8 @@ QDeclarativeDebugServerConnection *QDeclarativeDebugServerPrivate::loadConnectio
         if (dir.exists()) {
             QStringList plugins(dir.entryList(QDir::Files));
             foreach (const QString &pluginPath, plugins) {
-                pluginCandidates << dir.absoluteFilePath(pluginPath);
+                if (QFileInfo(pluginPath).fileName().contains(pluginName))
+                    pluginCandidates << dir.absoluteFilePath(pluginPath);
             }
         }
     }
@@ -166,7 +168,7 @@ QDeclarativeDebugServer *QDeclarativeDebugServer::instance()
         bool block = false;
         bool ok = false;
 
-        // format: qmljsdebugger=port:3768[,block]
+        // format: qmljsdebugger=port:3768[,block] OR qmljsdebugger=ost[,block]
         if (!appD->qmljsDebugArgumentsString().isEmpty()) {
             if (!QDeclarativeEnginePrivate::qml_debugging_enabled) {
                 const QString message =
@@ -177,17 +179,23 @@ QDeclarativeDebugServer *QDeclarativeDebugServer::instance()
                 return 0;
             }
 
+            QString pluginName;
             if (appD->qmljsDebugArgumentsString().indexOf(QLatin1String("port:")) == 0) {
                 int separatorIndex = appD->qmljsDebugArgumentsString().indexOf(QLatin1Char(','));
                 port = appD->qmljsDebugArgumentsString().mid(5, separatorIndex - 5).toInt(&ok);
+                pluginName = QLatin1String("qmldbg_tcp");
+            } else if (appD->qmljsDebugArgumentsString().contains("ost")) {
+                pluginName = QLatin1String("qmldbg_ost");
+                ok = true;
             }
+
             block = appD->qmljsDebugArgumentsString().contains(QLatin1String("block"));
 
             if (ok) {
                 server = new QDeclarativeDebugServer();
 
                 QDeclarativeDebugServerConnection *connection
-                        = QDeclarativeDebugServerPrivate::loadConnectionPlugin();
+                        = QDeclarativeDebugServerPrivate::loadConnectionPlugin(pluginName);
                 if (connection) {
                     server->d_func()->connection = connection;
 
diff --git a/src/declarative/graphicsitems/qdeclarativegridview.cpp b/src/declarative/graphicsitems/qdeclarativegridview.cpp
index c2d8ad0..05e64b9 100644
--- a/src/declarative/graphicsitems/qdeclarativegridview.cpp
+++ b/src/declarative/graphicsitems/qdeclarativegridview.cpp
@@ -2250,7 +2250,7 @@ qreal QDeclarativeGridView::maxXExtent() const
     qreal extent;
     qreal highlightStart;
     qreal highlightEnd;
-    qreal lastItemPosition;
+    qreal lastItemPosition = 0;
     if (d->isRightToLeftTopToBottom()){
         highlightStart = d->highlightRangeStartValid ? d->highlightRangeEnd : d->size();
         highlightEnd = d->highlightRangeEndValid ? d->highlightRangeStart : d->size();
diff --git a/src/declarative/qml/qdeclarativecontextscriptclass.cpp b/src/declarative/qml/qdeclarativecontextscriptclass.cpp
index bb4ece4..3abd787 100644
--- a/src/declarative/qml/qdeclarativecontextscriptclass.cpp
+++ b/src/declarative/qml/qdeclarativecontextscriptclass.cpp
@@ -227,6 +227,7 @@ QDeclarativeContextScriptClass::queryProperty(QDeclarativeContextData *bindConte
         if (data)  {
             lastData = data;
             lastContext = bindContext;
+            lastScopeObject = scopeObject;
             return QScriptClass::HandlesReadAccess;
         }
     }
@@ -268,17 +269,12 @@ QDeclarativeContextScriptClass::property(Object *object, const Identifier &name)
     QDeclarativeEnginePrivate *ep = QDeclarativeEnginePrivate::get(engine);
     QScriptEngine *scriptEngine = QDeclarativeEnginePrivate::getScriptEngine(engine);
 
-    if (lastScopeObject) {
-
-        return ep->objectClass->property(lastScopeObject, name);
-
-    } else if (lastData) {
+    if (lastData) {
 
         if (lastData->type) {
-            return Value(scriptEngine, ep->typeNameClass->newObject(bindContext->contextObject, lastData->type));
+            return Value(scriptEngine, ep->typeNameClass->newObject(lastScopeObject, lastData->type));
         } else if (lastData->typeNamespace) {
-            return Value(scriptEngine, ep->typeNameClass->newObject(bindContext->contextObject, 
-                                                                    lastData->typeNamespace));
+            return Value(scriptEngine, ep->typeNameClass->newObject(lastScopeObject, lastData->typeNamespace));
         } else {
             int index = lastData->importedScriptIndex;
             if (index < bindContext->importedScripts.count()) {
@@ -288,6 +284,10 @@ QDeclarativeContextScriptClass::property(Object *object, const Identifier &name)
             }
         }
 
+    } else if (lastScopeObject) {
+
+        return ep->objectClass->property(lastScopeObject, name);
+
     } else if (lastPropertyIndex != -1) {
 
         QScriptValue rv;
diff --git a/src/declarative/util/qdeclarativexmllistmodel.cpp b/src/declarative/util/qdeclarativexmllistmodel.cpp
index c79baa4..a61ac06 100644
--- a/src/declarative/util/qdeclarativexmllistmodel.cpp
+++ b/src/declarative/util/qdeclarativexmllistmodel.cpp
@@ -144,6 +144,7 @@ struct XmlQueryJob
     QList<void*> roleQueryErrorId; // the ptr to send back if there is an error
     QStringList keyRoleQueries;
     QStringList keyRoleResultsCache;
+    QString prefix;
 };
 
 class QDeclarativeXmlQuery : public QObject
@@ -172,6 +173,12 @@ public:
     }
 
     int doQuery(QString query, QString namespaces, QByteArray data, QList<QDeclarativeXmlListModelRole *>* roleObjects, QStringList keyRoleResultsCache) {
+        {
+            QMutexLocker m1(&m_mutex);
+            m_queryIds.ref();
+            if (m_queryIds <= 0)
+                m_queryIds = 1;
+        }
 
         XmlQueryJob job;
         job.queryId = m_queryIds;
@@ -194,9 +201,6 @@ public:
         {
             QMutexLocker ml(&m_mutex);
             m_jobs.insert(m_queryIds, job);
-            m_queryIds++;
-            if (m_queryIds <= 0)
-              m_queryIds = 1;
         }
 
         QMetaObject::invokeMethod(this, "processQuery", Qt::QueuedConnection, Q_ARG(int, job.queryId));
@@ -214,20 +218,15 @@ private slots:
             job = m_jobs.value(queryId);
         }
 
-        QDeclarativeXmlQueryResult r;
-        doQueryJob(&job);
-        doSubQueryJob(&job);
-        r.queryId = job.queryId;
-        r.size = m_size;
-        r.data = m_modelData;
-        r.inserted = m_insertedItemRanges;
-        r.removed = m_removedItemRanges;
-        r.keyRoleResultsCache = job.keyRoleResultsCache;
+        QDeclarativeXmlQueryResult result;
+        result.queryId = job.queryId;
+        doQueryJob(&job, &result);
+        doSubQueryJob(&job, &result);
 
         {
             QMutexLocker ml(&m_mutex);
             if (m_jobs.contains(queryId)) {
-                emit queryCompleted(r);
+                emit queryCompleted(result);
                 m_jobs.remove(queryId);
             }
         }
@@ -241,8 +240,8 @@ protected:
 
 
 private:
-    void doQueryJob(XmlQueryJob* job);
-    void doSubQueryJob(XmlQueryJob* job);
+    void doQueryJob(XmlQueryJob *job, QDeclarativeXmlQueryResult *currentResult);
+    void doSubQueryJob(XmlQueryJob *job, QDeclarativeXmlQueryResult *currentResult);
     void getValuesOfKeyRoles(const XmlQueryJob& currentJob, QStringList *values, QXmlQuery *query) const;
     void addIndexToRangeList(QList<QDeclarativeXmlListRange> *ranges, int index) const;
 
@@ -250,17 +249,12 @@ private:
     QMutex m_mutex;
     QThread m_thread;
     QMap<int, XmlQueryJob> m_jobs;
-    int m_queryIds;
-    QString m_prefix;
-    int m_size;
-    QList<QList<QVariant> > m_modelData;
-    QList<QDeclarativeXmlListRange> m_insertedItemRanges;
-    QList<QDeclarativeXmlListRange> m_removedItemRanges;
+    QAtomicInt m_queryIds;
 };
 
 Q_GLOBAL_STATIC(QDeclarativeXmlQuery, globalXmlQuery)
 
-void QDeclarativeXmlQuery::doQueryJob(XmlQueryJob* currentJob)
+void QDeclarativeXmlQuery::doQueryJob(XmlQueryJob *currentJob, QDeclarativeXmlQueryResult *currentResult)
 {
     Q_ASSERT(currentJob->queryId != -1);
 
@@ -295,10 +289,8 @@ void QDeclarativeXmlQuery::doQueryJob(XmlQueryJob* currentJob)
     }
 
     currentJob->data = xml;
-    m_prefix = namespaces + prefix + QLatin1Char('/');
-    m_size = 0;
-    if (count > 0)
-        m_size = count;
+    currentJob->prefix = namespaces + prefix + QLatin1Char('/');
+    currentResult->size = (count > 0 ? count : 0);
 }
 
 void QDeclarativeXmlQuery::getValuesOfKeyRoles(const XmlQueryJob& currentJob, QStringList *values, QXmlQuery *query) const
@@ -306,9 +298,9 @@ void QDeclarativeXmlQuery::getValuesOfKeyRoles(const XmlQueryJob& currentJob, QS
     const QStringList &keysQueries = currentJob.keyRoleQueries;
     QString keysQuery;
     if (keysQueries.count() == 1)
-        keysQuery = m_prefix + keysQueries[0];
+        keysQuery = currentJob.prefix + keysQueries[0];
     else if (keysQueries.count() > 1)
-        keysQuery = m_prefix + QLatin1String("concat(") + keysQueries.join(QLatin1String(",")) + QLatin1String(")");
+        keysQuery = currentJob.prefix + QLatin1String("concat(") + keysQueries.join(QLatin1String(",")) + QLatin1String(")");
 
     if (!keysQuery.isEmpty()) {
         query->setQuery(keysQuery);
@@ -331,10 +323,9 @@ void QDeclarativeXmlQuery::addIndexToRangeList(QList<QDeclarativeXmlListRange> *
         ranges->append(qMakePair(index, 1));
 }
 
-void QDeclarativeXmlQuery::doSubQueryJob(XmlQueryJob* currentJob)
+void QDeclarativeXmlQuery::doSubQueryJob(XmlQueryJob *currentJob, QDeclarativeXmlQueryResult *currentResult)
 {
     Q_ASSERT(currentJob->queryId != -1);
-    m_modelData.clear();
 
     QBuffer b(&currentJob->data);
     b.open(QIODevice::ReadOnly);
@@ -347,16 +338,14 @@ void QDeclarativeXmlQuery::doSubQueryJob(XmlQueryJob* currentJob)
 
     // See if any values of key roles have been inserted or removed.
 
-    m_insertedItemRanges.clear();
-    m_removedItemRanges.clear();
     if (currentJob->keyRoleResultsCache.isEmpty()) {
-        m_insertedItemRanges << qMakePair(0, m_size);
+        currentResult->inserted << qMakePair(0, currentResult->size);
     } else {
         if (keyRoleResults != currentJob->keyRoleResultsCache) {
             QStringList temp;
             for (int i=0; i<currentJob->keyRoleResultsCache.count(); i++) {
                 if (!keyRoleResults.contains(currentJob->keyRoleResultsCache[i]))
-                    addIndexToRangeList(&m_removedItemRanges, i);
+                    addIndexToRangeList(&currentResult->removed, i);
                 else 
                     temp << currentJob->keyRoleResultsCache[i];
             }
@@ -364,12 +353,12 @@ void QDeclarativeXmlQuery::doSubQueryJob(XmlQueryJob* currentJob)
             for (int i=0; i<keyRoleResults.count(); i++) {
                 if (temp.count() == i || keyRoleResults[i] != temp[i]) {
                     temp.insert(i, keyRoleResults[i]);
-                    addIndexToRangeList(&m_insertedItemRanges, i);
+                    addIndexToRangeList(&currentResult->inserted, i);
                 }
             }
         }
     }
-    currentJob->keyRoleResultsCache = keyRoleResults;
+    currentResult->keyRoleResultsCache = keyRoleResults;
 
     // Get the new values for each role.
     //### we might be able to condense even further (query for everything in one go)
@@ -377,7 +366,7 @@ void QDeclarativeXmlQuery::doSubQueryJob(XmlQueryJob* currentJob)
     for (int i = 0; i < queries.size(); ++i) {
         QList<QVariant> resultList;
         if (!queries[i].isEmpty()) {
-            subquery.setQuery(m_prefix + QLatin1String("(let $v := string(") + queries[i] + QLatin1String(") return if ($v) then ") + queries[i] + QLatin1String(" else \"\")"));
+            subquery.setQuery(currentJob->prefix + QLatin1String("(let $v := string(") + queries[i] + QLatin1String(") return if ($v) then ") + queries[i] + QLatin1String(" else \"\")"));
             if (subquery.isValid()) {
                 QXmlResultItems resultItems;
                 subquery.evaluateTo(&resultItems);
@@ -391,9 +380,9 @@ void QDeclarativeXmlQuery::doSubQueryJob(XmlQueryJob* currentJob)
             }
         }
         //### should warn here if things have gone wrong.
-        while (resultList.count() < m_size)
+        while (resultList.count() < currentResult->size)
             resultList << QVariant();
-        m_modelData << resultList;
+        currentResult->data << resultList;
         b.seek(0);
     }
 
diff --git a/src/plugins/qmltooling/qmldbg_ost/qmldbg_ost.pro b/src/plugins/qmltooling/qmldbg_ost/qmldbg_ost.pro
new file mode 100644
index 0000000..2748889
--- /dev/null
+++ b/src/plugins/qmltooling/qmldbg_ost/qmldbg_ost.pro
@@ -0,0 +1,21 @@
+TARGET = qmldbg_ost
+QT       += declarative network
+
+include(../../qpluginbase.pri)
+
+QTDIR_build:DESTDIR  = $$QT_BUILD_TREE/plugins/qmltooling
+QTDIR_build:REQUIRES += "contains(QT_CONFIG, declarative)"
+
+SOURCES += \
+    qmlostplugin.cpp \
+	qostdevice.cpp
+
+HEADERS += \
+    qmlostplugin.h \
+    qostdevice.h \
+    usbostcomm.h
+
+target.path += $$[QT_INSTALL_PLUGINS]/qmltooling
+INSTALLS += target
+
+symbian:TARGET.UID3=0x20031E92
diff --git a/src/plugins/qmltooling/qmldbg_ost/qmlostplugin.cpp b/src/plugins/qmltooling/qmldbg_ost/qmlostplugin.cpp
new file mode 100644
index 0000000..1c91c34
--- /dev/null
+++ b/src/plugins/qmltooling/qmldbg_ost/qmlostplugin.cpp
@@ -0,0 +1,143 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 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 "qmlostplugin.h"
+#include "qostdevice.h"
+
+#include <private/qdeclarativedebugserver_p.h>
+#include <private/qpacketprotocol_p.h>
+
+QT_BEGIN_NAMESPACE
+
+static const TInt KQmlOstProtocolId = 0x94;
+
+class QmlOstPluginPrivate {
+public:
+    QmlOstPluginPrivate();
+
+    QOstDevice *ost;
+    QPacketProtocol *protocol;
+    QDeclarativeDebugServer *debugServer;
+};
+
+QmlOstPluginPrivate::QmlOstPluginPrivate() :
+    ost(0),
+    protocol(0),
+    debugServer(0)
+{
+}
+
+QmlOstPlugin::QmlOstPlugin() :
+    d_ptr(new QmlOstPluginPrivate)
+{
+}
+
+QmlOstPlugin::~QmlOstPlugin()
+{
+    delete d_ptr;
+}
+
+void QmlOstPlugin::setServer(QDeclarativeDebugServer *server)
+{
+    Q_D(QmlOstPlugin);
+    d->debugServer = server;
+}
+
+bool QmlOstPlugin::isConnected() const
+{
+    Q_D(const QmlOstPlugin);
+    return d->ost && d->ost->isOpen();
+}
+
+void QmlOstPlugin::send(const QByteArray &message)
+{
+    Q_D(QmlOstPlugin);
+
+    if (!isConnected())
+        return;
+
+    QPacket pack;
+    pack.writeRawData(message.data(), message.length());
+
+    d->protocol->send(pack);
+    //d->socket->flush();
+}
+
+void QmlOstPlugin::disconnect()
+{
+    Q_D(QmlOstPlugin);
+
+    delete d->protocol;
+    d->protocol = 0;
+}
+
+void QmlOstPlugin::setPort(int port, bool block)
+{
+    Q_UNUSED(port);
+    Q_UNUSED(block);
+
+    Q_D(QmlOstPlugin);
+
+    d->ost = new QOstDevice(this);
+    bool ok = d->ost->open(KQmlOstProtocolId);
+    if (!ok) {
+        if (d->ost->errorString().length())
+            qDebug("Error from QOstDevice: %s", qPrintable(d->ost->errorString()));
+        qWarning("QDeclarativeDebugServer: Unable to listen on OST"); // This message is part of the signalling - do not change the format!
+        return;
+    }
+    d->protocol = new QPacketProtocol(d->ost, this);
+    QObject::connect(d->protocol, SIGNAL(readyRead()), this, SLOT(readyRead()));
+    qWarning("QDeclarativeDebugServer: Waiting for connection via OST"); // This message is part of the signalling - do not change the format!
+}
+
+void QmlOstPlugin::readyRead()
+{
+    Q_D(QmlOstPlugin);
+    QPacket packet = d->protocol->read();
+
+    QByteArray content = packet.data();
+    d->debugServer->receiveMessage(content);
+}
+
+Q_EXPORT_PLUGIN2(qmlostplugin, QmlOstPlugin)
+
+QT_END_NAMESPACE
diff --git a/src/plugins/qmltooling/qmldbg_ost/qmlostplugin.h b/src/plugins/qmltooling/qmldbg_ost/qmlostplugin.h
new file mode 100644
index 0000000..eee6ee1
--- /dev/null
+++ b/src/plugins/qmltooling/qmldbg_ost/qmlostplugin.h
@@ -0,0 +1,81 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QMLOSTPLUGIN_H
+#define QMLOSTPLUGIN_H
+
+#include <QtGui/QStylePlugin>
+#include <QtDeclarative/private/qdeclarativedebugserverconnection_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QDeclarativeDebugServer;
+class QmlOstPluginPrivate;
+
+class QmlOstPlugin : public QObject, public QDeclarativeDebugServerConnection
+{
+    Q_OBJECT
+    Q_DECLARE_PRIVATE(QmlOstPlugin)
+    Q_DISABLE_COPY(QmlOstPlugin)
+    Q_INTERFACES(QDeclarativeDebugServerConnection)
+
+
+public:
+    QmlOstPlugin();
+    ~QmlOstPlugin();
+
+    void setServer(QDeclarativeDebugServer *server);
+    void setPort(int port, bool bock);
+
+    bool isConnected() const;
+    void send(const QByteArray &message);
+    void disconnect();
+
+private Q_SLOTS:
+    void readyRead();
+
+private:
+    QmlOstPluginPrivate *d_ptr;
+};
+
+QT_END_NAMESPACE
+
+#endif // QMLOSTPLUGIN_H
diff --git a/src/plugins/qmltooling/qmldbg_ost/qostdevice.cpp b/src/plugins/qmltooling/qmldbg_ost/qostdevice.cpp
new file mode 100644
index 0000000..21b0169
--- /dev/null
+++ b/src/plugins/qmltooling/qmldbg_ost/qostdevice.cpp
@@ -0,0 +1,180 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 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 "qostdevice.h"
+#include <e32base.h>
+
+#include "usbostcomm.h"
+
+class QOstDevicePrivate : public CActive
+{
+    QOstDevice* q_ptr;
+    Q_DECLARE_PUBLIC(QOstDevice)
+
+public:
+    QOstDevicePrivate() : CActive(CActive::EPriorityStandard) {
+        CActiveScheduler::Add(this);
+    }
+    ~QOstDevicePrivate() {
+        Cancel();
+    }
+
+private:
+    void RunL();
+    void DoCancel();
+
+private:
+    RUsbOstComm ost;
+    TBuf8<4096> readBuf;
+    QByteArray dataBuf;
+};
+
+QOstDevice::QOstDevice(QObject *parent) :
+    QIODevice(parent), d_ptr(new QOstDevicePrivate)
+{
+    d_ptr->q_ptr = this;
+}
+
+QOstDevice::~QOstDevice()
+{
+    close();
+    delete d_ptr;
+}
+
+bool QOstDevice::open(int ostProtocolId)
+{
+    if (isOpen())
+        return false;
+
+    Q_D(QOstDevice);
+    TInt err = d->ost.Connect();
+    if (!err) err = d->ost.Open();
+    const TVersion KRequiredVersion(1,1,0);
+    TVersion version = d->ost.Version();
+    if (version.iMajor < KRequiredVersion.iMajor ||
+            (version.iMajor == KRequiredVersion.iMajor && version.iMinor < KRequiredVersion.iMinor)) {
+        setErrorString("CODA version too old. At least version 4.0.18 (without TRK) is required.");
+        return false;
+    }
+
+    if (!err) err = d->ost.RegisterProtocolID((TOstProtIds)ostProtocolId, EFalse);
+    if (!err) {
+        d->ost.ReadMessage(d->iStatus, d->readBuf);
+        d->SetActive();
+        return QIODevice::open(ReadWrite | Unbuffered);
+    }
+    return false;
+}
+
+void QOstDevicePrivate::RunL()
+{
+    Q_Q(QOstDevice);
+    //qDebug("QOstDevice received %d bytes q=%x", readBuf.Size(), q);
+    if (iStatus == KErrNone) {
+        QByteArray data = QByteArray::fromRawData((const char*)readBuf.Ptr(), readBuf.Size());
+        dataBuf.append(data);
+
+        readBuf.Zero();
+        ost.ReadMessage(iStatus, readBuf);
+        SetActive();
+
+        emit q->readyRead();
+    } else {
+        q->setErrorString(QString("Error %1 from RUsbOstComm::ReadMessage()").arg(iStatus.Int()));
+    }
+    //qDebug("-QOstDevicePrivate RunL");
+}
+
+void QOstDevicePrivate::DoCancel()
+{
+    ost.ReadCancel();
+}
+
+void QOstDevice::close()
+{
+    Q_D(QOstDevice);
+    QIODevice::close();
+    d->Cancel();
+    // RDbgTrcComm::Close isn't safe to call when not open, sigh
+    if (d->ost.Handle()) {
+        d->ost.Close();
+    }
+}
+
+qint64 QOstDevice::readData(char *data, qint64 maxSize)
+{
+    Q_D(QOstDevice);
+    if (d->dataBuf.length() == 0 && !d->IsActive())
+        return -1;
+    qint64 available = qMin(maxSize, (qint64)d->dataBuf.length());
+    memcpy(data, d->dataBuf.constData(), available);
+    d->dataBuf.remove(0, available);
+    return available;
+}
+
+static const TInt KMaxOstPacketLen = 4096;
+
+qint64 QOstDevice::writeData(const char *data, qint64 maxSize)
+{
+    Q_D(QOstDevice);
+    TPtrC8 ptr((const TUint8*)data, (TInt)maxSize);
+    while (ptr.Length()) {
+        TPtrC8 fragment = ptr.Left(qMin(ptr.Length(), KMaxOstPacketLen));
+        //qDebug("QOstDevice writing %d bytes", fragment.Length());
+        TRequestStatus stat;
+        d->ost.WriteMessage(stat, fragment);
+        User::WaitForRequest(stat);
+        if (stat.Int() != KErrNone) {
+            setErrorString(QString("Error %1 from RUsbOstComm::WriteMessage()").arg(stat.Int()));
+            return -1;
+        }
+        ptr.Set(ptr.Mid(fragment.Length()));
+    }
+    emit bytesWritten(maxSize); //TODO does it matter this is emitted synchronously?
+    //qDebug("QOstDevice wrote %d bytes", ptr.Size());
+    return maxSize;
+}
+
+qint64 QOstDevice::bytesAvailable() const
+{
+    Q_D(const QOstDevice);
+    return d->dataBuf.length();
+}
diff --git a/src/plugins/qmltooling/qmldbg_ost/qostdevice.h b/src/plugins/qmltooling/qmldbg_ost/qostdevice.h
new file mode 100644
index 0000000..ba1f443
--- /dev/null
+++ b/src/plugins/qmltooling/qmldbg_ost/qostdevice.h
@@ -0,0 +1,75 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QOSTDEVICE_H
+#define QOSTDEVICE_H
+
+#include <QIODevice.h>
+
+QT_BEGIN_NAMESPACE
+
+class QOstDevicePrivate;
+
+class QOstDevice : public QIODevice
+{
+    Q_OBJECT
+    Q_DECLARE_PRIVATE(QOstDevice)
+    Q_DISABLE_COPY(QOstDevice)
+
+public:
+    explicit QOstDevice(QObject *parent=0);
+    ~QOstDevice();
+
+    bool open(int ostProtocolId);
+    void close();
+
+protected:
+    qint64 readData(char *data, qint64 maxSize);
+    qint64 writeData(const char *data, qint64 maxSize);
+    qint64 bytesAvailable() const;
+
+private:
+    QOstDevicePrivate* d_ptr;
+};
+
+QT_END_NAMESPACE
+
+#endif // QOSTDEVICE_H
diff --git a/src/plugins/qmltooling/qmldbg_ost/usbostcomm.h b/src/plugins/qmltooling/qmldbg_ost/usbostcomm.h
new file mode 100644
index 0000000..48ff7bf
--- /dev/null
+++ b/src/plugins/qmltooling/qmldbg_ost/usbostcomm.h
@@ -0,0 +1,191 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef USBHOSTCOMM_H
+#define USBHOSTCOMM_H
+
+// Based on the official usbostrouter header, modified to remove dependancy on
+// the client DLL
+
+#include <e32base.h>
+
+typedef int TOstProtIds;
+
+class RUsbOstComm : public RSessionBase
+{
+public:
+    RUsbOstComm();
+    TInt Connect();
+    TInt Disconnect();
+    TInt Open();
+    TInt Close();
+    TInt RegisterProtocolID(TOstProtIds aId, TBool aNeedHeader);
+    void ReadMessage(TRequestStatus& aStatus, TDes8& aDes);
+    TInt ReadCancel();
+    void WriteMessage(TRequestStatus& aStatus, const TDesC8& aDes, TBool aHasHeader=EFalse);
+    TVersion Version() const;
+
+private:
+    enum TUsbOstCmdCode
+    {
+        EUsbOstCmdCodeFirst,
+        EUsbOstCmdConnect,
+        EUsbOstCmdDisconnect,
+        EUsbOstCmdCodeGetAcmConfig,
+        EUsbOstCmdCodeSetAcmConfig,
+        EUsbOstCmdCodeOpen,
+        EUsbOstCmdCodeClose,
+        EUsbOstCmdCodeRegisterId,
+        EUsbOstCmdCodeRegisterIds,
+        EUsbOstCmdCodeUnRegisterId,
+        EUsbOstCmdCodeUnRegisterIds,
+        EUsbOstCmdCodeReadMsg,
+        EUsbOstCmdCodeReadCancel,
+        EUsbOstCmdCodeWriteMsg,
+        EUsbOstCmdCodeWriteCancel,
+        EUsbOstCmdCodeLast
+    };
+};
+
+RUsbOstComm::RUsbOstComm()
+{
+}
+
+TInt RUsbOstComm::Connect()
+{
+    _LIT(KUsbOstServerName, "!UsbOstRouter");
+    _LIT(KUsbOstServerImageName, "usbostrouter");
+    const TUid KUsbOstServerUid = { 0x200170BE };
+    TInt startupAttempts = 2;
+    for(;;) {
+        TInt ret = CreateSession(KUsbOstServerName, TVersion(1,0,0));
+        if (ret != KErrNotFound && ret != KErrServerTerminated) {
+            return ret;
+        }
+
+        if (startupAttempts-- == 0) {
+            return ret;
+        }
+
+        RProcess server;
+        ret = server.Create(KUsbOstServerImageName, KNullDesC, KUsbOstServerUid);
+        if (ret != KErrNone)
+            return ret;
+
+        TRequestStatus serverDiedRequestStatus;
+        server.Rendezvous(serverDiedRequestStatus);
+
+        if (serverDiedRequestStatus != KRequestPending) {
+            // Abort startup
+            server.Kill(KErrNone);
+        } else {
+            // Logon OK - start the server
+            server.Resume();
+        }
+        User::WaitForRequest(serverDiedRequestStatus);
+        ret = (server.ExitType() == EExitPanic) ? KErrGeneral : serverDiedRequestStatus.Int();
+        server.Close();
+
+        if (ret != KErrNone && ret != KErrAlreadyExists) {
+            return ret;
+        }
+    }
+}
+
+TInt RUsbOstComm::Disconnect()
+{
+    return SendReceive(EUsbOstCmdDisconnect);
+}
+
+TInt RUsbOstComm::Open()
+{
+    return SendReceive(EUsbOstCmdCodeOpen);
+}
+
+TInt RUsbOstComm::Close()
+{
+    TInt err = SendReceive(EUsbOstCmdCodeClose);
+    RHandleBase::Close();
+    return err;
+}
+
+TInt RUsbOstComm::RegisterProtocolID(const TOstProtIds aId, TBool aNeedHeader)
+{
+    TIpcArgs args(aId, aNeedHeader);
+    return SendReceive(EUsbOstCmdCodeRegisterId, args);
+}
+
+void RUsbOstComm::ReadMessage(TRequestStatus& aStatus, TDes8& aDes)
+{
+    TIpcArgs args(aDes.MaxLength(), &aDes);
+    SendReceive(EUsbOstCmdCodeReadMsg, args, aStatus);
+}
+
+TInt RUsbOstComm::ReadCancel()
+{
+    return SendReceive(EUsbOstCmdCodeReadCancel);
+}
+
+void RUsbOstComm::WriteMessage(TRequestStatus& aStatus, const TDesC8& aDes, TBool aHasHeader)
+{
+    TIpcArgs args(aHasHeader, aDes.Length(), &aDes);
+    SendReceive(EUsbOstCmdCodeWriteMsg, args, aStatus);
+}
+
+typedef TVersion (*TVersionFunction)(const RUsbOstComm*);
+const TInt KVersionOrdinal = 17;
+
+TVersion RUsbOstComm::Version() const
+{
+    // This function has to go to the DLL, unfortunately
+    TVersion result; // Return 0.0.0 on any error
+    RLibrary lib;
+    TInt err = lib.Load(_L("usbostcomm"));
+    if (err) return result;
+
+    TLibraryFunction fn = lib.Lookup(KVersionOrdinal);
+    if (fn)
+        result = ((TVersionFunction)fn)(this);
+    lib.Close();
+    return result;
+}
+
+#endif //USBHOSTCOMM_H
diff --git a/src/plugins/qmltooling/tcpserver/tcpserver.pro b/src/plugins/qmltooling/qmldbg_tcp/qmldbg_tcp.pro
index f4f2666..e8ab962 100644
--- a/src/plugins/qmltooling/tcpserver/tcpserver.pro
+++ b/src/plugins/qmltooling/qmldbg_tcp/qmldbg_tcp.pro
@@ -1,4 +1,4 @@
-TARGET = tcpserver
+TARGET = qmldbg_tcp
 QT       += declarative network
 
 include(../../qpluginbase.pri)
@@ -15,4 +15,4 @@ HEADERS += \
 target.path += $$[QT_INSTALL_PLUGINS]/qmltooling
 INSTALLS += target
 
-symbian:TARGET.UID3=0x20031E90 
\ No newline at end of file
+symbian:TARGET.UID3=0x20031E90
diff --git a/src/plugins/qmltooling/tcpserver/qtcpserverconnection.cpp b/src/plugins/qmltooling/qmldbg_tcp/qtcpserverconnection.cpp
index 69c1ef5..7db0db3 100644
--- a/src/plugins/qmltooling/tcpserver/qtcpserverconnection.cpp
+++ b/src/plugins/qmltooling/qmldbg_tcp/qtcpserverconnection.cpp
@@ -97,7 +97,8 @@ void QTcpServerConnection::send(const QByteArray &message)
 {
     Q_D(QTcpServerConnection);
 
-    if (!isConnected())
+    if (!isConnected()
+            || !d->protocol || !d->socket)
         return;
 
     QPacket pack;
@@ -111,9 +112,10 @@ void QTcpServerConnection::disconnect()
 {
     Q_D(QTcpServerConnection);
 
-    delete d->protocol;
+    // protocol might still be processing packages at this point
+    d->protocol->deleteLater();
     d->protocol = 0;
-    delete d->socket;
+    d->socket->deleteLater();
     d->socket = 0;
 }
 
@@ -143,6 +145,9 @@ void QTcpServerConnection::listen()
 void QTcpServerConnection::readyRead()
 {
     Q_D(QTcpServerConnection);
+    if (!d->protocol)
+        return;
+
     QPacket packet = d->protocol->read();
 
     QByteArray content = packet.data();
diff --git a/src/plugins/qmltooling/tcpserver/qtcpserverconnection.h b/src/plugins/qmltooling/qmldbg_tcp/qtcpserverconnection.h
index a6e17e6..a6e17e6 100644
--- a/src/plugins/qmltooling/tcpserver/qtcpserverconnection.h
+++ b/src/plugins/qmltooling/qmldbg_tcp/qtcpserverconnection.h
diff --git a/src/plugins/qmltooling/qmltooling.pro b/src/plugins/qmltooling/qmltooling.pro
index 01cf1a9..9b3346f 100644
--- a/src/plugins/qmltooling/qmltooling.pro
+++ b/src/plugins/qmltooling/qmltooling.pro
@@ -1,4 +1,4 @@
 TEMPLATE = subdirs
 
-SUBDIRS = tcpserver
-
+SUBDIRS = qmldbg_tcp
+symbian:SUBDIRS += qmldbg_ost