from Preference import Preference
import util

START_MAXIMIZED = "START_MAXIMIZED"
HIDE_READ_ENTRIES = "HIDE_READ_FEED_ENTRIES"
SHOW_ONLY_UNREAD_FEEDS = "SHOW_ONLY_UNREAD_FEEDS"

class Preferences(object):
    def __init__(self, session):
        self.session = session
        self.cache = {}
        
    def _cachedPreference(self, key, defaultValue=None):
        if self.cache.has_key(key):
            return self.cache[key]
        else:
            pref = Preference.forKey(key, self.session)
            if pref is None:
                pref = Preference(key, str(defaultValue))
                self.session.add(pref)
            self.cache[key] = pref
            return pref
        
    def startMaximized(self):
        pref = self._cachedPreference(START_MAXIMIZED, False)
        return util.str2bool(pref.value)

    def setStartMaximized(self, flag):
        pref = self._cachedPreference(START_MAXIMIZED)
        pref.value = util.bool2str(flag)

    def hideReadFeedEntries(self):
        pref = self._cachedPreference(HIDE_READ_ENTRIES, False)
        return util.str2bool(pref.value)
    
    def setHideReadFeedEntries(self, flag):
        pref = self._cachedPreference(HIDE_READ_ENTRIES)
        pref.value = util.bool2str(flag)
        
    def showOnlyUnreadFeeds(self):
        pref = self._cachedPreference(SHOW_ONLY_UNREAD_FEEDS, False)
        return util.str2bool(pref.value)
    
    def setShowOnlyUnreadFeeds(self, flag):
        pref = self._cachedPreference(SHOW_ONLY_UNREAD_FEEDS)
        pref.value = util.bool2str(flag)