parameters: (self, extra_classes=None)
return_statement: return super(NgBoundField, self).css_classes(extra_classes)
docstring: Returns a string of space-separated CSS classes for the wrapping element of this input field.
docstring_summary: Returns a string of space-separated CSS classes for the wrapping element of this input field.
docstring_tokens: Returns a string of space - separated CSS classes for the wrapping element of this input field .
function: def css_classes(self, extra_classes=None):
          """
          Returns a string of space-separated CSS classes for the wrapping element of this input field.
          """
          if hasattr(extra_classes, 'split'):
              extra_classes = extra_classes.split()
          extra_classes = set(extra_classes or [])
          # field_css_classes is an optional member of a Form optimized for django-angular
          field_css_classes = getattr(self.form, 'field_css_classes', None)
          if hasattr(field_css_classes, 'split'):
              extra_classes.update(field_css_classes.split())
          elif isinstance(field_css_classes, (list, tuple)):
              extra_classes.update(field_css_classes)
          elif isinstance(field_css_classes, dict):
              extra_field_classes = []
              for key in ('*', self.name):
                  css_classes = field_css_classes.get(key)
                  if hasattr(css_classes, 'split'):
                      extra_field_classes = css_classes.split()
                  elif isinstance(css_classes, (list, tuple)):
                      if '__default__' in css_classes:
                          css_classes.remove('__default__')
                          extra_field_classes.extend(css_classes)
                      else:
                          extra_field_classes = css_classes
              extra_classes.update(extra_field_classes)
          return super(NgBoundField, self).css_classes(extra_classes)
function_tokens: def css_classes ( self , extra_classes = None ) : if hasattr ( extra_classes , 'split' ) : extra_classes = extra_classes . split ( ) extra_classes = set ( extra_classes or [ ] ) # field_css_classes is an optional member of a Form optimized for django-angular field_css_classes = getattr ( self . form , 'field_css_classes' , None ) if hasattr ( field_css_classes , 'split' ) : extra_classes . update ( field_css_classes . split ( ) ) elif isinstance ( field_css_classes , ( list , tuple ) ) : extra_classes . update ( field_css_classes ) elif isinstance ( field_css_classes , dict ) : extra_field_classes = [ ] for key in ( '*' , self . name ) : css_classes = field_css_classes . get ( key ) if hasattr ( css_classes , 'split' ) : extra_field_classes = css_classes . split ( ) elif isinstance ( css_classes , ( list , tuple ) ) : if '__default__' in css_classes : css_classes . remove ( '__default__' ) extra_field_classes . extend ( css_classes ) else : extra_field_classes = css_classes extra_classes . update ( extra_field_classes ) return super ( NgBoundField , self ) . css_classes ( extra_classes )