Initial implementation of 'Create Method' quick fix

editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/text/correction/proposals/TrackedPositions.java

Index: editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/text/correction/proposals/TrackedPositions.java
diff --git a/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/text/correction/proposals/TrackedPositions.java b/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/text/correction/proposals/TrackedPositions.java
new file mode 100644
index 0000000000000000000000000000000000000000..d9227958ff9be4a4d7ff2d76f3b76be966bb7c20
--- /dev/null
+++ b/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/text/correction/proposals/TrackedPositions.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2012, 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.ui.internal.text.correction.proposals;
+
+import com.google.dart.compiler.common.HasSourceInfo;
+import com.google.dart.compiler.common.SourceInfo;
+import com.google.dart.tools.core.dom.rewrite.TrackedNodePosition;
+
+/**
+ * Factory for {@link TrackedNodePosition}.
+ */
+public class TrackedPositions {
+  public static TrackedNodePosition forNode(HasSourceInfo node) {
+    SourceInfo sourceInfo = node.getSourceInfo();
+    return forStartLength(sourceInfo.getOffset(), sourceInfo.getLength());
+  }
+
+  public static TrackedNodePosition forStartEnd(int start, int end) {
+    return forStartLength(start, end - start);
+  }
+
+  public static TrackedNodePosition forStartLength(final int start, final int length) {
+    return new TrackedNodePosition() {
+
+      @Override
+      public int getLength() {
+        return length;
+      }
+
+      @Override
+      public int getStartPosition() {
+        return start;
+      }
+
+      @Override
+      public String toString() {
+        return "Pos(" + start + "," + length + ")";
+      }
+    };
+  }
+}