* @see AbstractInformationControlManager#showInformationControl(Rectangle)
*/
protected void showInformationControl(Rectangle subjectArea) {
if (fTextViewer instanceof IWidgetTokenOwnerExtension && fTextViewer instanceof IWidgetTokenOwner) {
IWidgetTokenOwnerExtension extension= (IWidgetTokenOwnerExtension) fTextViewer;
if (extension.requestWidgetToken(this, WIDGET_PRIORITY))
super.showInformationControl(subjectArea);
} else if (fTextViewer instanceof IWidgetTokenOwner) {
IWidgetTokenOwner owner= (IWidgetTokenOwner) fTextViewer;
if (owner.requestWidgetToken(this))
super.showInformationControl(subjectArea);