add/remove support

change db layout to version 0.4, with removed column
only display items, that are not removed
created events for add, remove buttons
remove, __delitem__, contains in itemList as proxy to itemList.data
added default constructor (if nothing is set) for item to create a new

1 files changed, 11 insertions, 0 deletions

diff --git a/itemList.py b/itemList.py
index 6252946..7dc2944 100644
--- a/itemList.py
+++ b/itemList.py
@@ -14,6 +14,17 @@ class itemList:
     def __setitem__(self, idx, item):
         self.data[idx] = item
 
+    def __delitem__(self, key):
+        self.date[key].removed = True
+        self.data.__delitem__(key)
+
+    def remove(self, item):
+        item.removed = True
+        self.data.remove(item)
+        
+    def __contians__(self, item):
+        return (item in self.data)
+
     def append(self, item):
         item.observer = self
         self.data.append(item)