Saner check for db collection.

src/libtomahawk/Collection.h

@@ -48,6 +48,7 @@ public:
     virtual ~Collection();
 
     virtual QString name() const;
+    virtual QString type() const { return QString(); }
 
     virtual void loadPlaylists() { qDebug() << Q_FUNC_INFO; }
     virtual void loadAutoPlaylists() { qDebug() << Q_FUNC_INFO; }

src/libtomahawk/Source.cpp

@@ -105,7 +105,11 @@ collection_ptr
 Source::collection() const
 {
     if ( m_collections.length() )
-        return m_collections.first();
+    {
+        foreach ( const collection_ptr& collection, m_collections )
+            if ( collection->type() == "databasecollection" )
+                return collection; // We assume only one is a db collection. Now get off my lawn.
+    }
 
     collection_ptr tmp;
     return tmp;

src/libtomahawk/database/DatabaseCollection.h

@@ -39,6 +39,8 @@ public:
         qDebug() << Q_FUNC_INFO;
     }
 
+    virtual QString type() const { return "databasecollection"; }
+
     virtual void loadPlaylists();
     virtual void loadAutoPlaylists();
     virtual void loadStations();

src/libtomahawk/resolvers/ScriptCollection.h

@@ -40,6 +40,8 @@ public:
                                QObject* parent = 0 );
     virtual ~ScriptCollection();
 
+    virtual QString type() const { return "scriptcollection"; }
+
 private:
     ExternalResolver* m_resolver;