--- a/Preferences.py	Fri May 14 08:31:46 2010 +0200
+++ b/Preferences.py	Fri May 14 15:02:15 2010 +0200
@@ -7,10 +7,27 @@
 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, defaultValue)
+                self.session.add(pref)
+            self.cache[key] = pref
+            return pref
         
     def startMaximized(self):
-        value = Preference.valueForKey(START_MAXIMIZED, self.session)
-        if value is not None:
-            return util.str2bool(value)
-        else:
-            return False
+        pref = self._cachedPreference(START_MAXIMIZED, False)
+        return util.str2bool(pref.value)
+
+    def setStartMaximized(self, flag):
+        """ Convert flag to boolean so that a defined value is stored in the DB """
+        boolValue = False
+        if flag:
+            boolValue = True
+        pref = self._cachedPreference(START_MAXIMIZED)
+        pref.value = boolValue