Use MOVE_FILE refactoring to implement file rename participant in Editor.

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

Index: editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/rename/RenameResourceParticipant.java
diff --git a/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/rename/RenameResourceParticipant.java b/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/rename/RenameResourceParticipant.java
index ef907e25bda5ea07090a56ec74d8216da6ab81f2..92a6cf93608d9582a991136cfff0eafbd97b9a3b 100644
--- a/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/rename/RenameResourceParticipant.java
+++ b/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/rename/RenameResourceParticipant.java
@@ -13,33 +13,18 @@
  */
 package com.google.dart.tools.internal.corext.refactoring.rename;
 
-import com.google.dart.engine.element.CompilationUnitElement;
-import com.google.dart.engine.search.SearchEngine;
-import com.google.dart.engine.search.SearchMatch;
-import com.google.dart.engine.source.Source;
-import com.google.dart.engine.utilities.source.SourceRange;
-import com.google.dart.tools.core.DartCore;
-import com.google.dart.tools.internal.corext.refactoring.RefactoringCoreMessages;
-import com.google.dart.tools.internal.corext.refactoring.changes.TextChangeCompatibility;
-import com.google.dart.tools.internal.corext.refactoring.util.DartElementUtil;
-import com.google.dart.tools.internal.corext.refactoring.util.TextChangeManager;
+import com.google.dart.tools.core.DartCoreDebug;
 import com.google.dart.tools.ui.internal.refactoring.RefactoringMessages;
 
-import org.eclipse.core.resources.IFile;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IProgressMonitor;
 import org.eclipse.core.runtime.OperationCanceledException;
 import org.eclipse.ltk.core.refactoring.Change;
-import org.eclipse.ltk.core.refactoring.CompositeChange;
 import org.eclipse.ltk.core.refactoring.RefactoringStatus;
-import org.eclipse.ltk.core.refactoring.TextChange;
 import org.eclipse.ltk.core.refactoring.participants.CheckConditionsContext;
-import org.eclipse.ltk.core.refactoring.participants.RenameArguments;
+import org.eclipse.ltk.core.refactoring.participants.RefactoringArguments;
+import org.eclipse.ltk.core.refactoring.participants.RefactoringProcessor;
 import org.eclipse.ltk.core.refactoring.participants.RenameParticipant;
-import org.eclipse.text.edits.ReplaceEdit;
-import org.eclipse.text.edits.TextEdit;
-
-import java.util.List;
 
 /**
  * {@link RenameParticipant} for updating resource references in Dart libraries.
@@ -47,46 +32,31 @@ import java.util.List;
  * @coverage dart.editor.ui.refactoring.core
  */
 public class RenameResourceParticipant extends RenameParticipant {
-  private final TextChangeManager changeManager = new TextChangeManager();
-  private IFile file;
+  private final RenameParticipant impl;
+
+  public RenameResourceParticipant() {
+    if (DartCoreDebug.ENABLE_ANALYSIS_SERVER) {
+      impl = new RenameResourceParticipant_NEW();
+    } else {
+      impl = new RenameResourceParticipant_OLD();
+    }
+  }
 
   @Override
   public RefactoringStatus checkConditions(IProgressMonitor pm, CheckConditionsContext context)
       throws OperationCanceledException {
-    return new RefactoringStatus();
+    return impl.checkConditions(pm, context);
   }
 
   @Override
   public Change createChange(IProgressMonitor pm) throws CoreException, OperationCanceledException {
-    return null;
+    return impl.createChange(pm);
   }
 
   @Override
-  public Change createPreChange(IProgressMonitor pm) {
-    RenameArguments arguments = getArguments();
-    // update references
-    if (arguments.getUpdateReferences()) {
-      // prepare unit element
-      CompilationUnitElement unitElement = DartElementUtil.getCompilationUnitElement(file);
-      if (unitElement == null) {
-        return null;
-      }
-      // prepare references
-      SearchEngine searchEngine = DartCore.getProjectManager().newSearchEngine();
-      List<SearchMatch> references = searchEngine.searchReferences(unitElement, null, null);
-      // update references
-      String newName = arguments.getNewName();
-      for (SearchMatch match : references) {
-        addReferenceUpdate(match, newName);
-      }
-    }
-    // return as single CompositeChange
-    TextChange[] changes = changeManager.getAllChanges();
-    if (changes.length != 0) {
-      return new CompositeChange(getName(), changes);
-    } else {
-      return null;
-    }
+  public Change createPreChange(IProgressMonitor pm) throws CoreException,
+      OperationCanceledException {
+    return impl.createPreChange(pm);
   }
 
   @Override
@@ -95,27 +65,13 @@ public class RenameResourceParticipant extends RenameParticipant {
   }
 
   @Override
-  protected boolean initialize(Object element) {
-    if (element instanceof IFile) {
-      file = (IFile) element;
-      return true;
-    }
-    return false;
-  }
-
-  private void addReferenceUpdate(SearchMatch match, String newName) {
-    Source source = match.getElement().getSource();
-    // prepare "old name" range
-    SourceRange matchRange = match.getSourceRange();
-    int end = matchRange.getEnd() - "'".length();
-    int begin = end - file.getName().length();
-    // add TextEdit to rename "old name" with "new name"
-    TextEdit edit = new ReplaceEdit(begin, end - begin, newName);
-    addTextEdit(source, RefactoringCoreMessages.RenameProcessor_update_reference, edit);
+  public boolean initialize(RefactoringProcessor processor, Object element,
+      RefactoringArguments arguments) {
+    return impl.initialize(processor, element, arguments);
   }
 
-  private void addTextEdit(Source source, String groupName, TextEdit textEdit) {
-    TextChange change = changeManager.get(source);
-    TextChangeCompatibility.addTextEdit(change, groupName, textEdit);
+  @Override
+  protected boolean initialize(Object element) {
+    return false;
   }
 }