iot-sensortag: Allow reconnect after a failed connection attempt

A disconnected sensor tag can be tried to be reconnected by clicking
on the chart area or starting rescan from the Sensor settings menu.
During a (re)connection process a progress indicator is shown to
the user.

The user has a possibility to disconnect (and reconnect) a
currently connect SensorDataProvider

A new state, 'NotFound' is added in SensorTagDataProvider to
distinguish between states when a Sensor Tag has not been discovered
at all, and when it has already been discovered but is has been
disconnected.

Change-Id: I54eea72d8c92a67a5ccbb3bc192ac8f33ada1c39
Reviewed-by: Maurice Kalinowski <maurice.kalinowski@qt.io>

1 files changed, 6 insertions, 4 deletions

diff --git a/tradeshow/iot-sensortag/sensortagdataproviderpool.h b/tradeshow/iot-sensortag/sensortagdataproviderpool.h
index d7ac740..fe8b30f 100644
--- a/tradeshow/iot-sensortag/sensortagdataproviderpool.h
+++ b/tradeshow/iot-sensortag/sensortagdataproviderpool.h
@@ -66,6 +66,7 @@ public:
     explicit SensorTagDataProviderPool(QObject *parent = 0);
 
     void startScanning() override;
+    void disconnectProvider(QString id) override;
 
     // setMacFilterList takes presence over name filter
     Q_INVOKABLE void setMacFilterList(const QStringList& addressList);
@@ -77,9 +78,11 @@ public:
 protected:
     SensorTagDataProviderPool(QString poolName, QObject *parent = 0);
     virtual void finishScanning();
-
     void updateProviderForCloud();
 
+    QStringList m_macFilters;
+    QStringList m_nameFilters;
+
 private slots:
     void deviceDiscoveryFinished();
     void btDeviceFound(const QBluetoothDeviceInfo &info);
@@ -87,9 +90,8 @@ private slots:
     void deviceScanError(QBluetoothDeviceDiscoveryAgent::Error error);
 
 private:
-    QStringList m_macFilters;
-    QStringList m_nameFilters;
-    bool m_deviceScanState;
+    SensorTagDataProvider *findProvider(QString id) const;
+
     QBluetoothDeviceDiscoveryAgent *m_discoveryAgent;
     SensorTagDataProvider *m_providerForCloud;
 };