QmlProfiler: fix broken recording logic from the client side

This patch should not be applied back to the master branch,
since the issues are already fixed by b7304e2f2e.

Task-number: QTCREATORBUG-7091

Change-Id: I6f0b7752f3446b412c5bd9ae6e3d7e1847472e56
Reviewed-by: Kai Koehne <kai.koehne@nokia.com>

src/libs/qmljsdebugclient/qmlprofilereventlist.cpp

@@ -644,9 +644,14 @@ void QmlProfilerEventList::setTraceStartTime( qint64 time )
 
 void QmlProfilerEventList::complete()
 {
-    setState(ProcessingData);
-    d->collectV8Statistics();
-    postProcess();
+    if (currentState() == AcquiringData) {
+        setState(ProcessingData);
+        d->collectV8Statistics();
+        postProcess();
+    } else {
+        setState(Empty);
+    }
+
 }
 
 void QmlProfilerEventList::QmlProfilerEventListPrivate::clearQmlRootEvent()

src/plugins/qmlprofiler/qml/MainView.qml

@@ -321,7 +321,7 @@ Rectangle {
         id: elapsedTimer
         property date startDate
         property bool reset: true
-        running: connection.recording && connection.enabled
+        running: connection ? (connection.recording && connection.enabled) : false
         repeat: true
         onRunningChanged: {
             if (running) reset = true;

src/plugins/qmlprofiler/qmlprofilertool.cpp

@@ -533,7 +533,8 @@ QWidget *QmlProfilerTool::createWidgets()
 
 void QmlProfilerTool::connectClient(int port)
 {
-    QTC_ASSERT(!d->m_client, return;)
+    if (d->m_client)
+        delete d->m_client;
     d->m_client = new QDeclarativeDebugConnection;
     d->m_traceWindow->reset(d->m_client);
     connect(d->m_client, SIGNAL(stateChanged(QAbstractSocket::SocketState)),

src/plugins/qmlprofiler/tracewindow.cpp

@@ -154,6 +154,8 @@ TraceWindow::TraceWindow(QWidget *parent)
     setMinimumHeight(170);
     m_currentZoomLevel = 0;
     m_profiledTime = 0;
+
+    initializeQmlViews();
 }
 
 TraceWindow::~TraceWindow()
@@ -276,6 +278,14 @@ void TraceWindow::reset(QDeclarativeDebugConnection *conn)
 
     connectClientSignals();
 
+    m_v8DataReady = false;
+    m_qmlDataReady = false;
+
+    m_mainView->rootContext()->setContextProperty("connection", m_plugin.data());
+}
+
+void TraceWindow::initializeQmlViews()
+{
     m_mainView->rootContext()->setContextProperty("connection", m_plugin.data());
     m_mainView->rootContext()->setContextProperty("zoomControl", m_zoomControl.data());
     m_timebar->rootContext()->setContextProperty("zoomControl", m_zoomControl.data());
@@ -307,9 +317,6 @@ void TraceWindow::reset(QDeclarativeDebugConnection *conn)
 
     connect(this, SIGNAL(internalClearDisplay()), m_mainView->rootObject(), SLOT(clearAll()));
     connect(this,SIGNAL(internalClearDisplay()), m_overview->rootObject(), SLOT(clearDisplay()));
-
-    m_v8DataReady = false;
-    m_qmlDataReady = false;
 }
 
 void TraceWindow::connectClientSignals()
@@ -476,6 +483,11 @@ void TraceWindow::qmlComplete()
     m_qmlDataReady = true;
     if (!m_v8plugin || m_v8plugin.data()->status() != QDeclarativeDebugClient::Enabled || m_v8DataReady) {
         m_eventList->complete();
+
+        // if no data was received, still notify completion
+        if (m_eventList->currentState() == QmlProfilerEventList::Empty)
+            emit viewUpdated();
+
         // once complete is sent, reset the flags
         m_qmlDataReady = false;
         m_v8DataReady = false;
@@ -487,6 +499,11 @@ void TraceWindow::v8Complete()
     m_v8DataReady = true;
     if (!m_plugin || m_plugin.data()->status() != QDeclarativeDebugClient::Enabled || m_qmlDataReady) {
         m_eventList->complete();
+
+        // if no data was received, still notify completion
+        if (m_eventList->currentState() == QmlProfilerEventList::Empty)
+            emit viewUpdated();
+
         // once complete is sent, reset the flags
         m_v8DataReady = false;
         m_qmlDataReady = false;

src/plugins/qmlprofiler/tracewindow.h

@@ -170,6 +170,7 @@ private:
     QWidget *createZoomToolbar();
     void connectClientSignals();
     void disconnectClientSignals();
+    void initializeQmlViews();
 
 protected:
     virtual void resizeEvent(QResizeEvent *event);