1 files changed, 12 insertions, 1 deletions
diff --git a/StarsEx/DataSource.cpp b/StarsEx/DataSource.cpp
index 06c7658..1618171 100644
--- a/StarsEx/DataSource.cpp
+++ b/StarsEx/DataSource.cpp
@@ -18,9 +18,13 @@
 using Group = DataSource::Group;
 
 
+int DataSource::s_next_id {0};
+
+
 DataSource::DataSource(Group group) :
     m_prefix {""},
-    m_group {group}
+    m_group {group},
+    m_id {s_next_id++}
 {
 }
 
@@ -30,6 +34,13 @@ DataSource::~DataSource()
 }
 
 
+int
+DataSource::Id() const
+{
+    return m_id;
+}
+
+
 Group
 DataSource::GetGroup() const
 {