* annotation preferences.
*
* @return the navigation enablement actions
*/
private IAction[] getActionsFromDescriptors() {
MarkerAnnotationPreferences fMarkerAnnotationPreferences= EditorsPlugin.getDefault().getMarkerAnnotationPreferences();
SortedSet containers= new TreeSet();
Iterator iter= fMarkerAnnotationPreferences.getAnnotationPreferences().iterator();
while (iter.hasNext()) {
AnnotationPreference preference= (AnnotationPreference)iter.next();
String key= preference.getShowInNextPrevDropdownToolbarActionKey();
if (key != null && fStore.getBoolean(key)) {
String preferenceKey= getPreferenceKey(preference);