Add battery level observer

added data item id and BatteryLevelDataItemBase type

Change-Id: I7e33b476c787587d0372ec67bd61fa5efe6eef41
CRs-Fixed: 2125054

core/data-items/DataItemConcreteTypesBase.h

@@ -378,7 +378,7 @@ protected:
 class MccmncDataItemBase : public IDataItemCore {
 public:
     MccmncDataItemBase(const string & name) :
-        mValue (name),
+        mValue(name),
         mId(MCCMNC_DATA_ITEM_ID) {}
     virtual ~MccmncDataItemBase() {}
     inline virtual DataItemId getId() { return mId; }
@@ -392,7 +392,7 @@ protected:
 
 class SrnDeviceScanDetailsDataItemBase : public IDataItemCore {
 public:
-    SrnDeviceScanDetailsDataItemBase (DataItemId Id) :
+    SrnDeviceScanDetailsDataItemBase(DataItemId Id) :
         mValidSrnData(false),
         mApSrnRssi(-1),
         mApSrnTimestamp(0),
@@ -400,7 +400,7 @@ public:
         mReceiveTimestamp(0),
         mErrorCause(-1),
         mId(Id) {}
-    virtual ~SrnDeviceScanDetailsDataItemBase () {}
+    virtual ~SrnDeviceScanDetailsDataItemBase() {}
     inline virtual DataItemId getId() { return mId; }
     // Data members common to all SRN tech types
     /* Represents info on whether SRN data is valid (no error)*/
@@ -441,6 +441,18 @@ public:
     virtual int32_t copy(IDataItemCore* /*src*/, bool* /*dataItemCopied = NULL*/) {return 1;}
 };
 
+class BatteryLevelDataItemBase : public IDataItemCore {
+public:
+    inline BatteryLevelDataItemBase(uint8_t batteryPct) :
+            mBatteryPct(batteryPct), mId(BATTERY_LEVEL_DATA_ITEM_ID) {}
+    inline ~BatteryLevelDataItemBase() {}
+    inline virtual DataItemId getId() { return mId; }
+// Data members
+    uint8_t mBatteryPct;
+protected:
+    DataItemId mId;
+};
+
 } // namespace loc_core
 
 #endif //__DATAITEMCONCRETEBASETYPES__

core/data-items/DataItemId.h

@@ -67,7 +67,13 @@ typedef enum e_DataItemId {
     BTLE_SCAN_DATA_ITEM_ID,
     BT_SCAN_DATA_ITEM_ID,
     OEM_GTP_UPLOAD_TRIGGER_READY_ITEM_ID,
-    MAX_DATA_ITEM_ID
+
+    MAX_DATA_ITEM_ID,
+
+    // 26 -
+    BATTERY_LEVEL_DATA_ITEM_ID,
+
+    MAX_DATA_ITEM_ID_1_1,
 } DataItemId;
 
 #endif // #ifndef __DATAITEMID_H__