Initial implementation of "Rename Local Variable" refactoring.

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

Index: editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/reorg/IReorgPolicy.java
diff --git a/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/reorg/IReorgPolicy.java b/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/reorg/IReorgPolicy.java
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index 0000000000000000000000000000000000000000..f5547827cd2975fe8a90fa73820909e357794a4d
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+++ b/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/reorg/IReorgPolicy.java
@@ -0,0 +1,128 @@
+package com.google.dart.tools.internal.corext.refactoring.reorg;
+
+import com.google.dart.tools.core.model.DartElement;
+import com.google.dart.tools.core.model.DartModelException;
+import com.google.dart.tools.internal.corext.refactoring.DartRefactoringArguments;
+import com.google.dart.tools.ui.internal.refactoring.RefactoringSaveHelper;
+
+import org.eclipse.core.resources.IResource;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.ltk.core.refactoring.ChangeDescriptor;
+import org.eclipse.ltk.core.refactoring.RefactoringStatus;
+import org.eclipse.ltk.core.refactoring.participants.CheckConditionsContext;
+import org.eclipse.ltk.core.refactoring.participants.RefactoringParticipant;
+import org.eclipse.ltk.core.refactoring.participants.RefactoringProcessor;
+import org.eclipse.ltk.core.refactoring.participants.SharableParticipants;
+
+public interface IReorgPolicy extends IReorgDestinationValidator {
+
+//  public static interface ICopyPolicy extends IReorgPolicy {
+//    public Change createChange(IProgressMonitor monitor, INewNameQueries queries)
+//        throws DartModelException;
+//
+//    public ReorgExecutionLog getReorgExecutionLog();
+//  }
+//
+//  public static interface IMovePolicy extends IReferenceUpdating, IQualifiedNameUpdating,
+//      IReorgPolicy {
+//    /**
+//     * Checks if <b>Java</b> references to the selected element(s) can be updated if moved to the
+//     * selected destination. Even if <code>false</code>, participants could still update non-Java
+//     * references.
+//     * 
+//     * @return <code>true</code> iff <b>Java</b> references to the moved element can be updated
+//     */
+//    public boolean canUpdateJavaReferences();
+//
+//    public boolean canUpdateQualifiedNames();
+//
+//    public Change createChange(IProgressMonitor monitor) throws DartModelException;
+//
+//    public CreateTargetExecutionLog getCreateTargetExecutionLog();
+//
+//    public ICreateTargetQuery getCreateTargetQuery(ICreateTargetQueries createQueries);
+//
+//    public boolean hasAllInputSet();
+//
+//    public boolean isTextualMove();
+//
+//    public Change postCreateChange(Change[] participantChanges, IProgressMonitor monitor)
+//        throws CoreException;
+//
+//    public void setDestinationCheck(boolean check);
+//  }
+
+  /**
+   * @return true if this policy can handle the source elements
+   * @throws DartModelException in unexpected cases
+   */
+  public boolean canEnable() throws DartModelException;
+
+  public RefactoringStatus checkFinalConditions(IProgressMonitor monitor,
+      CheckConditionsContext context, IReorgQueries queries) throws CoreException;
+
+  /**
+   * @return the destination of this reorg or null if not a Dart element
+   */
+  public DartElement getDartElementDestination();
+
+  /**
+   * @return the source Dart elements to reorg
+   */
+  public DartElement[] getDartElements();
+
+  /**
+   * @return a descriptor describing a reorg from source to target
+   */
+  public ChangeDescriptor getDescriptor();
+
+  /**
+   * @return the unique id of this policy
+   */
+  public String getPolicyId();
+
+  /**
+   * @return the destination of this reorg or null if not a resource
+   */
+  public IResource getResourceDestination();
+
+  /**
+   * @return the source resources to reorg
+   */
+  public IResource[] getResources();
+
+  /**
+   * @return the save mode required for this reorg policy
+   * @see RefactoringSaveHelper
+   */
+  public int getSaveMode();
+
+  /**
+   * Initializes the reorg policy with arguments from a script.
+   * 
+   * @param arguments the arguments
+   * @return an object describing the status of the initialization. If the status has severity
+   *         <code>FATAL_ERROR</code>, the refactoring will not be executed.
+   */
+  public RefactoringStatus initialize(DartRefactoringArguments arguments);
+
+  public RefactoringParticipant[] loadParticipants(RefactoringStatus status,
+      RefactoringProcessor processor, String[] natures, SharableParticipants shared)
+      throws CoreException;
+
+  /**
+   * @param destination the destination for this reorg
+   */
+  public void setDestination(IReorgDestination destination);
+
+  /**
+   * Can destination be a target for the given source elements?
+   * 
+   * @param destination the destination to verify
+   * @return OK status if valid destination
+   * @throws DartModelException in unexpected cases
+   */
+  public RefactoringStatus verifyDestination(IReorgDestination destination)
+      throws DartModelException;
+}