1 files changed, 124 insertions, 0 deletions
diff --git a/src/python/Collection.py b/src/python/Collection.py
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+++ b/src/python/Collection.py
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+#!/usr/bin/env python 
+# -*- Mode: python -*-
+#======================================================================
+# FILE: Collection.py
+# CREATOR: eric 
+#
+# DESCRIPTION:
+#   
+#
+#  $Id: Collection.py,v 1.3 2001-03-11 00:46:57 plewis Exp $
+#  $Locker:  $
+#
+# (C) COPYRIGHT 2001, Eric Busboom <eric@softwarestudio.org>
+# (C) COPYRIGHT 2001, Patrick Lewis <plewis@inetarena.com>  
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of either: 
+#
+#    The LGPL as published by the Free Software Foundation, version
+#    2.1, available at: http://www.fsf.org/copyleft/lesser.html
+#
+#  Or:
+#
+#    The Mozilla Public License Version 1.0. You may obtain a copy of
+#    the License at http://www.mozilla.org/MPL/
+#======================================================================
+
+from types import *
+
+class Collection:
+    """A group of components that can be modified somewhat like a list.
+
+    Usage:
+        Collection(componet, propSequence)
+
+    component is a Component object
+    propSequence is a list or tuple of Property (or subclass of Property)
+        of objects already in component
+    """
+
+    def __init__(self, component, propSequence):
+        self._properties = list(propSequence[:])
+        self._component = component
+
+    def __getslice__(self, beg, end):
+        return Collection(self._component, self._properties[beg:end])
+
+    def __setslice__(self, beg, end, sequence):
+
+        if  not isinstance(sequence,ListType):
+            raise TypeError, "must assign list (not instance) to slice"
+
+        oldProps = self._properties[beg:end]
+
+        for p in oldProps:
+            self._component.remove_property(p)
+
+        self._properties[beg:end] = sequence
+        for p in sequence:
+            self._component.add_property(p)
+            
+    def __getitem__(self, i):
+        return self._properties[i]
+
+    def __setitem__(self, i, prop):
+        self._component.remove_property(self._properties[i])
+        self._component.add_property(prop)
+        self._properties[i]=prop
+
+    def __delitem__(self, i):
+        self._component.remove_property(self._properties[i])
+        del self._properties[i]
+
+    def __len__(self):
+        return len(self._properties)
+
+    def __str__(self):
+        s = "[ "
+        if len(self._properties) > 0:
+            s = s + str(self._properties[0])
+            for p in self._properties[1:]:
+                s = "%s, %s" % (s, p)
+        s = s + " ]"
+        return s
+            
+    def append(self, property):
+        self._properties.append(property)
+        self._component.add_property(property)
+
+class ComponentCollection:
+    
+    def __init__(self, parent, componentSequence):
+        self._parent = parent
+        self._components = list(componentSequence[:])
+
+    def __getslice__(self, beg, end):
+        return ComponentCollection(self._parent, self._components[beg:end])
+
+    def __setslice__(self, beg, end, sequence):
+        oldComps = self._components[beg:end]
+        self._components.__setslice__(beg, end, sequence)
+        for c in sequence:
+            self._components.addComponent(c)
+        for c in oldComps:
+            self._parent.remove_component(c)
+
+    def __getitem__(self, i):
+        return self._components[i]
+
+    def __setitem__(self, i, prop):
+        self._parent.remove_component(self._components[i])
+        self._parent.add_property(prop)
+        self._components[i]=prop
+
+    def __delitem__(self, i):
+        self._parent.remove_componet(self._components[i])
+        del self._components[i]
+
+    def __len__(self):
+        return len(self._components)
+            
+    def append(self, property):
+        self._components.append(property)
+        self._parent.addComponent(property)