QmlProfiler: Don't let timer run if we cannot connect to port

Previously the timer was started as soon as we connect, but we
should actually make sure the service is there.

Change-Id: Ic59ccb4a402a54dc1fc1f0c92ca2f80dad436581
Reviewed-by: Christiaan Janssen <christiaan.janssen@nokia.com>

src/libs/qmljsdebugclient/qmlprofilertraceclient.cpp

@@ -88,6 +88,11 @@ void QmlProfilerTraceClient::clearData()
     emit cleared();
 }
 
+bool QmlProfilerTraceClient::isEnabled() const
+{
+    return status() == Enabled;
+}
+
 bool QmlProfilerTraceClient::isRecording() const
 {
     return d->recording;

src/libs/qmljsdebugclient/qmlprofilertraceclient.h

@@ -53,6 +53,7 @@ struct QMLJSDEBUGCLIENT_EXPORT Location
 class QMLJSDEBUGCLIENT_EXPORT QmlProfilerTraceClient : public QmlJsDebugClient::QDeclarativeDebugClient
 {
     Q_OBJECT
+    Q_PROPERTY(bool enabled READ isEnabled NOTIFY enabled)
     Q_PROPERTY(bool recording READ isRecording WRITE setRecording NOTIFY recordingChanged)
 
     // don't hide by signal
@@ -84,6 +85,7 @@ public:
         MaximumMessage
     };
 
+    bool isEnabled() const;
     bool isRecording() const;
 
 public slots:

src/plugins/qmlprofiler/qml/MainView.qml

@@ -297,7 +297,7 @@ Rectangle {
         id: elapsedTimer
         property date startDate
         property bool reset: true
-        running: connection.recording
+        running: connection.recording && connection.enabled
         repeat: true
         onRunningChanged: {
             if (running) reset = true;