Collection filtering

I moved filtering from the Library lens to the collection base class

libsaria/collection/collection.py

@@ -30,6 +30,8 @@ class Collection:
 	def __init__(self, file):
 		self.file = file
 		self.load()
+		self.filtered = False
+		self.visible  = None
 
 	def save(self):
 		libsaria.data.save(
@@ -62,6 +64,19 @@ class Collection:
 		#print
 		#self.tag_tree.disp()
 
+	def filter(self, text):
+		if len(text) > 0:
+			self.visible  = self.index.filter(text)
+			self.filtered = True
+		else:
+			self.visible  = None
+			self.filtered = False
+
+	def is_visible(self, id):
+		if self.filtered == False:
+			return True
+		return id in self.visible
+
 	def walk_tags(self):
 		for tag in self.tag_tree.walk_forwards():
 			rec = self.records[tag[3]]

libsaria/collection/lens.py

@@ -24,8 +24,6 @@ def set_badfiles():
 class Library(collection.Collection):
 	def __init__(self):
 		collection.Collection.__init__(self, "DLTree_test")
-		self.filtered = False
-		self.visible  = None
 
 	def scan(self, path):
 		print "Library scanning %s" % path
@@ -36,19 +34,6 @@ class Library(collection.Collection):
 		save(badfiles, "badfiles", "")
 		self.disp()
 
-	def filter(self, text):
-		if len(text) > 0:
-			self.visible  = self.index.filter(text)
-			self.filtered = True
-		else:
-			self.visible  = None
-			self.filtered = False
-
-	def is_visible(self, id):
-		if self.filtered == False:
-			return True
-		return id in self.visible
-
 	def update(self, path):
 		global badfiles
 		FileRef  = libsaria.collection.FileRef