Is there a better way to programmatically retrieve a local variable IType from an EditorAction text selection in Eclipse?

public class MyEditorAction extends EditorAction {

/**

* @param unitEditor

* @return

*/

private IDocument getDocument(final CompilationUnitEditor unitEditor) {

IDocumentProvider provider = unitEditor.getDocumentProvider();

IEditorInput input = unitEditor.getEditorInput();

IDocument document = provider.getDocument(input);

return document;

}

public void runAction() {

if (getTargetEditor() instanceof CompilationUnitEditor) {

CompilationUnitEditor unitEditor = (CompilationUnitEditor) getTargetEditor();

ICompilationUnit varContainerUnit = (ICompilationUnit) unitEditor.getViewPartInput();

IDocument document = getDocument(unitEditor);

try {

JavaTextSelection javaSelection = new JavaTextSelection(varContainerUnit.getTypes()[0].getTypeRoot(),

document, getTextSelection().getOffset(), getTextSelection().getLength());

ILocalVariable localVar = (ILocalVariable) javaSelection.resolveElementAtOffset()[0];

String varQualifiedTypeName = Signature.getSignatureSimpleName(localVar.getTypeSignature());

//At this point with variable's container unit and qualified type name, use search engine to retrieve IType...

IType varType = SearchEngine.getVarType(varQualifiedTypeName, varContainerUnit);

}

}