QmlProfiler: Don't try to reconnect while already connecting

Hanging connection attempts will be aborted in response to the
"retry" message box now.

Change-Id: I63775eed9d7677a62293ba5c96a43e839ba285b4
Task-number: QTCREATORBUG-14685
Reviewed-by: Andreas Holzammer <andreas.holzammer@kdab.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>

src/libs/qmldebug/qmldebugclient.cpp

@@ -295,6 +295,11 @@ bool QmlDebugConnection::isOpen() const
     return d->gotHello;
 }
 
+bool QmlDebugConnection::isConnecting() const
+{
+    return !isOpen() && d->device;
+}
+
 void QmlDebugConnection::close()
 {
     if (d->device && d->device->isOpen())

src/libs/qmldebug/qmldebugclient.h

@@ -57,6 +57,7 @@ public:
     void connectToHost(const QString &hostName, quint16 port);
 
     bool isOpen() const;
+    bool isConnecting() const;
     void close();
 
 signals:

src/plugins/qmlprofiler/qmlprofilerclientmanager.cpp

@@ -215,7 +215,7 @@ void QmlProfilerClientManager::disconnectClientSignals()
 
 void QmlProfilerClientManager::connectToClient()
 {
-    if (!d->connection || d->connection->isOpen())
+    if (!d->connection || d->connection->isOpen() || d->connection->isConnecting())
         return;
 
     d->connection->connectToHost(d->tcpHost, d->tcpPort);
@@ -290,6 +290,10 @@ void QmlProfilerClientManager::logState(const QString &msg)
 
 void QmlProfilerClientManager::retryMessageBoxFinished(int result)
 {
+    QTC_ASSERT(!d->connection->isOpen(), return);
+    if (d->connection->isConnecting())
+        d->connection->disconnect();
+
     switch (result) {
     case QMessageBox::Retry: {
         d->connectionAttempts = 0;