def go(self, pagename):
current = self.get_current()
if (current != None and
Page.normalize_name(current) == Page.normalize_name(pagename)):
return
if len(self._hst) == 0:
self._hst.append(pagename)
self._pos = 0
return
self._hst = self._hst[0:self._pos+1]
if Page.normalize_name(self._hst[-1]) != Page.normalize_name(pagename):
self._hst.append(pagename)
if len(self._hst) > self.max_items:
self._hst = self._hst[-self.max_items:]
self._pos = len(self._hst) - 1
