From a0470c84a1b5eab898d882cb281b1cd846a5c745 Mon Sep 17 00:00:00 2001
From: Julien Lengrand-Lambert <jlengrand@gmail.com>
Date: Thu, 19 Jul 2012 08:11:37 +0200
Subject: [PATCH] Finishes first version of Observer. To be modified to fir
 with Facemovie

---
 .gitignore    |  1 +
 Observable.py | 54 +++++++++++++++++++++++++++++++++++++++++++++++++++
 Observer.py   | 20 +++++++++++++++++++
 test.py       | 20 +++++++++++++++++++
 4 files changed, 95 insertions(+)
 create mode 100644 .gitignore
 create mode 100755 test.py

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..0d20b64
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+*.pyc
diff --git a/Observable.py b/Observable.py
index e69de29..4d05c49 100644
--- a/Observable.py
+++ b/Observable.py
@@ -0,0 +1,54 @@
+#!/usr/bin/env python
+
+import Observer
+
+class Observable():
+	"""
+	"""
+
+	def __init__(self):
+		"""
+		"""
+		self.val = 1
+		self.obs_collection = []
+
+
+	def subscribe(self, observer):
+		"""
+		"""
+		try:
+			if not(observer in self.obs_collection):
+				self.obs_collection.append(observer)
+				print "%s added to collection" %(str(observer))
+			else:
+				print "%s already in collection" %(str(observer))
+
+		except TypeError:
+			print "Failed to add %s" %(str(observer))
+
+	def unsubscribe(self, observer):
+		"""
+		"""
+		try:
+			if observer in self.obs_collection:
+				self.obs_collection.remove(observer)
+				print "%s removed from collection" %(str(observer))
+			else:
+				print "%s not in collection" %(str(observer))
+
+		except TypeError:
+			print "Failed to remove %s" %(str(observer))
+
+	def notify(self, message):
+		"""
+		"""
+		for observer in self.obs_collection:
+			print "sent %s to %s" %(message, str(observer))
+			observer.update(message)
+
+
+	def set_val(self, val=1):
+		"""
+		"""
+		self.val += val
+		self.notify(str(self.val))
diff --git a/Observer.py b/Observer.py
index e69de29..f3ca382 100644
--- a/Observer.py
+++ b/Observer.py
@@ -0,0 +1,20 @@
+#!/usr/bin/env python
+
+class Observer():
+	"""
+	"""
+
+	def __init__(self, name="bob"):
+		"""
+		"""
+		self.name = name
+
+
+	def update(self, message):
+		"""
+		"""
+		if message is not None:
+			print "%s received %s" %(self.name, message)
+
+	def __str__(self):
+		return self.name
\ No newline at end of file
diff --git a/test.py b/test.py
new file mode 100755
index 0000000..d1609cf
--- /dev/null
+++ b/test.py
@@ -0,0 +1,20 @@
+#!/usr/bin/env python
+
+from Observer import Observer
+from Observable import Observable
+
+a = Observer("riri")
+b = Observer("fifi")
+c = Observer("loulou")
+
+d = Observable()
+
+d.subscribe(a)
+d.subscribe(b)
+d.subscribe(b)
+d.subscribe(c)
+
+d.unsubscribe(b)
+
+d.set_val(3)
+d.set_val()
\ No newline at end of file