/**
* Update the gradient on the inner editor title bar
*/
private void updateGradient() {
MultiEditor multiEditor = (MultiEditor) parentPane.getPartReference()
.getPart(true);
if (multiEditor != null) {
IEditorPart part = (IEditorPart) this.getEditorReference().getPart(
true);
if (part != null) {
multiEditor.updateGradient(part);
}
}
}