Initial implementation of "Rename Local Variable" refactoring.

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

Index: editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/DartRefactoringArguments.java
diff --git a/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/DartRefactoringArguments.java b/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/DartRefactoringArguments.java
new file mode 100644
index 0000000000000000000000000000000000000000..49412143c90827a15f8fddecd0f7b6c1f9890d43
--- /dev/null
+++ b/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/DartRefactoringArguments.java
@@ -0,0 +1,53 @@
+package com.google.dart.tools.internal.corext.refactoring;
+
+import com.google.dart.tools.core.refactoring.descriptors.DartRefactoringDescriptor;
+
+import java.util.Map;
+
+/**
+ * A wrapper around the Map received from {@link DartRefactoringDescriptor} to access and convert
+ * the options.
+ */
+public final class DartRefactoringArguments {
+
+  /** The attribute map (element type: <code>&lt;String, String&gt;</code>) */
+  private final Map<String, String> fAttributes;
+
+  /** The name of the project, or <code>null</code> for the workspace */
+  private final String fProject;
+
+  /**
+   * Creates a new refactoring arguments from arguments
+   * 
+   * @param project the project, or <code>null</code> for the workspace
+   * @param arguments the arguments
+   */
+  public DartRefactoringArguments(String project, Map<String, String> arguments) {
+    fProject = project;
+    fAttributes = arguments;
+  }
+
+  /**
+   * Returns the attribute with the specified name.
+   * 
+   * @param name the name of the attribute
+   * @return the attribute value, or <code>null</code>
+   */
+  public String getAttribute(final String name) {
+    return fAttributes.get(name);
+  }
+
+  /**
+   * Returns the name of the project.
+   * 
+   * @return the name of the project, or <code>null</code> for the workspace
+   */
+  public String getProject() {
+    return fProject;
+  }
+
+  @Override
+  public String toString() {
+    return getClass().getName() + fAttributes.toString();
+  }
+}