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_NEW.java

Index: editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/rename/RenameResourceParticipant_NEW.java
diff --git a/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/rename/RenameResourceParticipant_NEW.java b/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/rename/RenameResourceParticipant_NEW.java
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index 0000000000000000000000000000000000000000..bb9ba76a2a5dadbc256706e811eba56d00917ce4
--- /dev/null
+++ b/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/internal/corext/refactoring/rename/RenameResourceParticipant_NEW.java
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2014, the Dart project authors.
+ * 
+ * Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ * 
+ * http://www.eclipse.org/legal/epl-v10.html
+ * 
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package com.google.dart.tools.internal.corext.refactoring.rename;
+
+import com.google.dart.tools.core.utilities.io.FilenameUtils;
+import com.google.dart.tools.ui.internal.refactoring.RefactoringMessages;
+import com.google.dart.tools.ui.internal.refactoring.ServerMoveFileRefactoring;
+import com.google.dart.tools.ui.internal.refactoring.ServiceUtils_NEW;
+
+import org.eclipse.core.resources.IFile;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IPath;
+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.RefactoringStatus;
+import org.eclipse.ltk.core.refactoring.participants.CheckConditionsContext;
+import org.eclipse.ltk.core.refactoring.participants.RenameArguments;
+import org.eclipse.ltk.core.refactoring.participants.RenameParticipant;
+
+/**
+ * {@link RenameParticipant} for updating resource references in Dart libraries.
+ * 
+ * @coverage dart.editor.ui.refactoring.core
+ */
+public class RenameResourceParticipant_NEW extends RenameParticipant {
+  private IFile file;
+
+  @Override
+  public RefactoringStatus checkConditions(IProgressMonitor pm, CheckConditionsContext context)
+      throws OperationCanceledException {
+    return new RefactoringStatus();
+  }
+
+  @Override
+  public Change createChange(IProgressMonitor pm) throws CoreException, OperationCanceledException {
+    return null;
+  }
+
+  @Override
+  public Change createPreChange(IProgressMonitor pm) {
+    RenameArguments arguments = getArguments();
+    IPath fileLocation = file.getLocation();
+    String oldFile = fileLocation.toOSString();
+    String oldDir = fileLocation.removeLastSegments(1).toOSString();
+    String newName = arguments.getNewName();
+    String newFile = FilenameUtils.concat(oldDir, newName);
+    try {
+      ServerMoveFileRefactoring refactoring = new ServerMoveFileRefactoring(oldFile);
+      refactoring.setNewFile(newFile);
+      if (refactoring.checkAllConditions(pm).hasError()) {
+        return null;
+      }
+      // prepare change
+      Change change = refactoring.createChange(pm);
+      change = ServiceUtils_NEW.expandSingleChildCompositeChanges(change);
+      return change;
+    } catch (Throwable e) {
+      return null;
+    }
+  }
+
+  @Override
+  public String getName() {
+    return RefactoringMessages.RenameResourceParticipant_name;
+  }
+
+  @Override
+  protected boolean initialize(Object element) {
+    if (element instanceof IFile) {
+      file = (IFile) element;
+      return true;
+    }
+    return false;
+  }
+}