Initial implementation of "Rename Local Variable" refactoring.

editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/participants/DartProcessors.java

Index: editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/participants/DartProcessors.java
diff --git a/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/participants/DartProcessors.java b/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/participants/DartProcessors.java
new file mode 100644
index 0000000000000000000000000000000000000000..8866dfefb4b13a6ceff3aaec7184a90727514fcb
--- /dev/null
+++ b/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/participants/DartProcessors.java
@@ -0,0 +1,39 @@
+package com.google.dart.tools.internal.corext.refactoring.participants;
+
+import com.google.dart.tools.core.model.DartElement;
+import com.google.dart.tools.core.model.DartProject;
+import com.google.dart.tools.core.model.TypeMember;
+
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.ltk.internal.core.refactoring.resource.ResourceProcessors;
+
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * Utility class to deal with Dart element processors.
+ */
+public class DartProcessors {
+
+  public static String[] computeAffectedNatures(DartElement element) throws CoreException {
+    if (element instanceof TypeMember) {
+      TypeMember member = (TypeMember) element;
+      if (member.isPrivate()) {
+        return element.getDartProject().getProject().getDescription().getNatureIds();
+      }
+    }
+    DartProject project = element.getDartProject();
+    return ResourceProcessors.computeAffectedNatures(project.getProject());
+  }
+
+  public static String[] computeAffectedNaturs(DartElement[] elements) throws CoreException {
+    Set<String> result = new HashSet<String>();
+    for (int i = 0; i < elements.length; i++) {
+      String[] natures = computeAffectedNatures(elements[i]);
+      for (int j = 0; j < natures.length; j++) {
+        result.add(natures[j]);
+      }
+    }
+    return result.toArray(new String[result.size()]);
+  }
+}