void function ( IFontChangeListener arg0 ) { listeners . add ( arg0 ) ; }
adds the given ifontchangelistener to this zoommanager 's list of listeners . concode_field_sep ScaledFontManager sfmManager concode_elem_sep TextViewer viewer concode_elem_sep List listeners concode_field_sep void updateTextWidget concode_elem_sep boolean canIncrease concode_elem_sep void fireFontChanged concode_elem_sep boolean canDecrease concode_elem_sep void setViewer concode_elem_sep void increase concode_elem_sep void removeFontChangeListener concode_elem_sep void decrease