Merge libv1.

editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/DartUI.java

Index: editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/DartUI.java
diff --git a/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/DartUI.java b/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/DartUI.java
index 1e9a77a04ee1b8844c4ad1ed7a064cb227dd8d01..32ee0b1cfa6355a29bc4c2135e7915b9819c85cf 100644
--- a/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/DartUI.java
+++ b/editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/DartUI.java
@@ -18,9 +18,12 @@ import com.google.dart.tools.core.model.DartModelException;
 import com.google.dart.tools.core.model.SourceReference;
 import com.google.dart.tools.core.search.SearchScope;
 import com.google.dart.tools.core.search.SearchScopeFactory;
+import com.google.dart.tools.internal.corext.refactoring.util.ExecutionUtils;
+import com.google.dart.tools.internal.corext.refactoring.util.RunnableObjectEx;
 import com.google.dart.tools.ui.dialogs.TypeSelectionExtension;
 import com.google.dart.tools.ui.internal.SharedImages;
 import com.google.dart.tools.ui.internal.dialogs.FilteredTypesSelectionDialog;
+import com.google.dart.tools.ui.internal.text.editor.DartEditor;
 import com.google.dart.tools.ui.internal.text.editor.EditorUtility;
 import com.google.dart.tools.ui.internal.text.editor.ExternalCompilationUnitEditorInput;
 import com.google.dart.tools.ui.text.IColorManager;
@@ -29,8 +32,11 @@ import org.eclipse.core.resources.IProject;
 import org.eclipse.jface.operation.IRunnableContext;
 import org.eclipse.jface.preference.IPreferenceStore;
 import org.eclipse.jface.preference.PreferenceConverter;
+import org.eclipse.jface.text.ITextViewer;
+import org.eclipse.jface.text.source.ISourceViewer;
 import org.eclipse.swt.dnd.Transfer;
 import org.eclipse.swt.graphics.Color;
+import org.eclipse.swt.graphics.Point;
 import org.eclipse.swt.graphics.RGB;
 import org.eclipse.swt.widgets.Display;
 import org.eclipse.swt.widgets.Shell;
@@ -469,6 +475,20 @@ public final class DartUI {
   }
 
   /**
+   * @return the selection range in given {@link DartEditor}, works even if called from non-UI
+   *         thread.
+   * @see ITextViewer#getSelectedRange()
+   */
+  public static Point getSelectionRange(final ISourceViewer viewer) {
+    return ExecutionUtils.runObjectUI(new RunnableObjectEx<Point>() {
+      @Override
+      public Point runObject() throws Exception {
+        return viewer.getSelectedRange();
+      }
+    });
+  }
+
+  /**
    * Returns the shared images for the Dart UI.
    * 
    * @return the shared images manager