# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1431713751 -7200
# Node ID 65092bd5fd2971b6960eb21eb0f7211b3bdd81a1
# Parent  b9c05d30449f1cdf9e1078d3fc599aa43873f6ef
Added convenience methods for object copying, property access and removal, and
time zone identifier acquisition.

diff -r b9c05d30449f -r 65092bd5fd29 imiptools/data.py
--- a/imiptools/data.py	Fri May 15 14:56:21 2015 +0200
+++ b/imiptools/data.py	Fri May 15 20:15:51 2015 +0200
@@ -43,6 +43,9 @@
     def __init__(self, fragment):
         self.objtype, (self.details, self.attr) = fragment.items()[0]
 
+    def copy(self):
+        return Object(to_dict(self.to_node()))
+
     def get_items(self, name, all=True):
         return get_items(self.details, name, all)
 
@@ -89,6 +92,9 @@
     def has_key(self, name):
         return self.details.has_key(name)
 
+    def get(self, name):
+        return self.details.get(name)
+
     def __getitem__(self, name):
         return self.details[name]
 
@@ -98,6 +104,16 @@
     def __delitem__(self, name):
         del self.details[name]
 
+    def remove(self, name):
+        try:
+            del self[name]
+        except KeyError:
+            pass
+
+    def remove_all(self, names):
+        for name in names:
+            self.remove(name)
+
     # Computed results.
 
     def has_recurrence(self, tzid, recurrence):
@@ -389,6 +405,9 @@
         self.start_attr = start_attr
         self.end_attr = end_attr
 
+    def get_tzid(self):
+        return get_tzid(self.start_attr, self.end_attr)
+
     def as_tuple(self):
         return self.start, self.end, self.origin, self.start_attr, self.end_attr