class ElementWithLink(object):
LINK_ATTR_NAME = None
def __init__(self, el, encoding=None):
self.el = el
self._link_history = OrderedSet()
self.encoding = encoding
def get_link(self):
#print(__name__, "ElementWithLink encoding=", self.encoding)
r = self.el.get(self.LINK_ATTR_NAME)
if self.encoding:
r = to_unicode(r, self.encoding)
return r
def set_link(self, new):
_old = self.get_link()
if _old != new:
logging.debug('Update link %s => %s ', _old, new)
self.el.set(self.LINK_ATTR_NAME, new)
self._link_history.add(_old)
link = property(get_link, set_link)
@classmethod
def make(cls, attr):
def wrapper(el, encoding):
r = cls(el, encoding=encoding)
r.LINK_ATTR_NAME = attr
return r
return wrapper
@property
def link_history(self):
return self._link_history
def __init__(self, el, encoding=None):
self.el = el
self._link_history = OrderedSet()
self.encoding = encoding
