gray out refactor button after refactoring applied

Author: ujohnny

src/main/java/org/jetbrains/research/groups/ml_methods/ui/ClassRefactoringPanel.java

@@ -200,7 +200,6 @@ private void refactorSelected() {
         ClassRefactoringPanel.reporter.log(uuid, info);
 
         table.setEnabled(true);
-        doRefactorButton.setEnabled(true);
         selectAllButton.setEnabled(true);
     }
 

src/main/java/org/jetbrains/research/groups/ml_methods/ui/RefactoringsTableModel.java

@@ -73,24 +73,21 @@ public void setAppliedRefactorings(@NotNull Set<CalculatedRefactoring> accepted)
                 isSelected[i] = false;
             }
         });
+        fireTableDataChanged();
     }
 
     List<CalculatedRefactoring> pullSelectable() {
-        final List<CalculatedRefactoring> result = virtualRows.stream()
+        return virtualRows.stream()
                 .filter(i -> isActive[i])
                 .map(refactorings::get)
                 .collect(Collectors.toList());
-        fireTableDataChanged();
-        return result;
     }
 
     List<CalculatedRefactoring> pullSelected() {
-        final List<CalculatedRefactoring> result = virtualRows.stream()
+        return virtualRows.stream()
                 .filter(i -> isSelected[i] && isActive[i])
                 .map(refactorings::get)
                 .collect(Collectors.toList());
-        fireTableDataChanged();
-        return result;
     }
 
     void filter(Predicate<CalculatedRefactoring> predicate) {