Issue #1328 Fixed invalid thread access issue when parm inventory changes and GridCanvas needs to redraw

Change-Id: I8207e9e3082db861c8040858ef11dc67e63747da

Former-commit-id: ba1d1a6bfe57466a6a0fe5864cd87ffefe61a2f8

cave/com.raytheon.viz.gfe/src/com/raytheon/viz/gfe/gridmanager/GridManager.java

@@ -76,6 +76,14 @@ import com.raytheon.viz.gfe.temporaleditor.TemporalEditor;
 
 public class GridManager implements IGridManager,
         ISpatialEditorTimeChangedListener {
+
+    private class RedrawRunnable implements Runnable {
+        @Override
+        public void run() {
+            redraw();
+        }
+    }
+
     /**
      * Job to scroll the grid manager horizontally
      */
@@ -246,6 +254,8 @@ public class GridManager implements IGridManager,
 
     private boolean selectionActive;
 
+    private Runnable redraw = new RedrawRunnable();
+
     /**
      * @return the selectionActive
      */
@@ -801,6 +811,6 @@ public class GridManager implements IGridManager,
     @Override
     public void spatialEditorTimeChanged(Date date) {
         syncSelectTR(date);
-        redraw();
+        VizApp.runAsync(redraw);
     }
 }