How to use

setFocus

method

in

org.eclipse.ui.part.EditorPart

/**
 * This method should be called from internal of the property page. Normally
 * means user did some action inside the property sheet to change current
 * selection.
 * 
 * @param selectedNode
 * @param node
 */
public void internalChangeSelection(Node selectedNode, Node innerNode) {
  getEditor().setFocus();
  _hiearchAction.refresh(selectedNode, innerNode);
  this.getSite().getActionBars().getToolBarManager().update(true);
  super.selectionChanged(null, new StructuredSelection(selectedNode));
}