Enable members sorting in file structure view

idea/src/org/jetbrains/jet/plugin/structureView/JetStructureViewModel.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2013 JetBrains s.r.o.
+ * Copyright 2010-2014 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,13 +17,22 @@
 package org.jetbrains.jet.plugin.structureView;
 
 import com.intellij.ide.structureView.StructureViewModelBase;
+import com.intellij.ide.util.treeView.smartTree.Sorter;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.jet.lang.psi.JetDeclaration;
 import org.jetbrains.jet.lang.psi.JetFile;
 
 public class JetStructureViewModel extends StructureViewModelBase {
+    private static final Sorter[] sorters = new Sorter[] {Sorter.ALPHA_SORTER};
+
     public JetStructureViewModel(@NotNull JetFile jetFile) {
         super(jetFile, new JetStructureViewElement(jetFile));
         withSuitableClasses(JetDeclaration.class);
     }
+
+    @NotNull
+    @Override
+    public Sorter[] getSorters() {
+        return sorters;
+    }
 }