router: use one global logger object

pcbnew/router/pns_algo_base.h

@@ -40,7 +40,9 @@ class ALGO_BASE
 {
 public:
     ALGO_BASE( ROUTER* aRouter ) :
-        m_debugDecorator( nullptr ), m_router( aRouter )
+        m_debugDecorator( nullptr ), 
+        m_router( aRouter ),
+        m_logger( nullptr )
     {}
 
     virtual ~ALGO_BASE() {}
@@ -57,6 +59,11 @@ public:
     ///> Returns the logger object, allowing to dump geometry to a file.
     virtual LOGGER* Logger();
 
+    void SetLogger( LOGGER* aLogger )
+    {
+        m_logger = aLogger;
+    }
+
     /**
     * Function SetDebugDecorator
     *
@@ -72,9 +79,10 @@ public:
         return m_debugDecorator;
     }
 
-private:
+protected:
     DEBUG_DECORATOR *m_debugDecorator;
     ROUTER* m_router;
+    LOGGER* m_logger;
 };
 
 }

pcbnew/router/pns_dragger.cpp

@@ -397,13 +397,4 @@ const ITEM_SET DRAGGER::Traces()
     return m_draggedItems;
 }
 
-
-LOGGER* DRAGGER::Logger()
-{
-    if( m_shove )
-        return m_shove->Logger();
-
-    return NULL;
-}
-
 }

pcbnew/router/pns_dragger.h

@@ -97,9 +97,6 @@ public:
      */
     const ITEM_SET Traces();
 
-    /// @copydoc ALGO_BASE::Logger()
-    virtual LOGGER* Logger() override;
-
     void SetMode( int aDragMode );
 
 private: