Ticket #556: New object oriented Python abstraction for pjsua API

git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@2119 74dad513-b988-da41-8d7b-12977e46ad98
diff --git a/pjsip-apps/src/python/samples/presence.py b/pjsip-apps/src/python/samples/presence.py
new file mode 100644
index 0000000..d7a3843
--- /dev/null
+++ b/pjsip-apps/src/python/samples/presence.py
@@ -0,0 +1,113 @@
+# $Id:$
+#
+# Presence and instant messaging
+#
+# Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
+#
+import sys
+import pjsua as pj
+import threading
+
+LOG_LEVEL = 3
+
+def log_cb(level, str, len):
+    print str,
+
+class MyBuddyCallback(pj.BuddyCallback):
+    def __init__(self, buddy):
+        pj.BuddyCallback.__init__(self, buddy)
+
+    def on_state(self):
+        print "Buddy", self.buddy.info().uri, "is",
+        print self.buddy.info().online_text
+
+    def on_pager(self, mime_type, body):
+        print "Instant message from", self.buddy.info().uri, 
+        print "(", mime_type, "):"
+        print body
+
+    def on_pager_status(self, body, im_id, code, reason):
+        if code >= 300:
+            print "Message delivery failed for message",
+            print body, "to", self.buddy.info().uri, ":", reason
+
+    def on_typing(self, is_typing):
+        if is_typing:
+            print self.buddy.info().uri, "is typing"
+        else:
+            print self.buddy.info().uri, "stops typing"
+
+
+lib = pj.Lib()
+
+try:
+    # Init library with default config and some customized
+    # logging config.
+    lib.init(log_cfg = pj.LogConfig(level=LOG_LEVEL, callback=log_cb))
+
+    # Create UDP transport which listens to any available port
+    transport = lib.create_transport(pj.TransportType.UDP, 
+                                     pj.TransportConfig(0))
+    print "\nListening on", transport.info().host, 
+    print "port", transport.info().port, "\n"
+    
+    # Start the library
+    lib.start()
+
+    # Create local account
+    acc = lib.create_account_for_transport(transport)
+
+    my_sip_uri = "sip:" + transport.info().host + \
+                 ":" + str(transport.info().port)
+
+    buddy = None
+
+    # Menu loop
+    while True:
+        print "My SIP URI is", my_sip_uri
+        print "Menu:  a=add buddy, t=toggle online status, i=send IM, q=quit"
+
+        input = sys.stdin.readline().rstrip("\r\n")
+        if input == "a":
+            # Add buddy
+            print "Enter buddy URI: ", 
+            input = sys.stdin.readline().rstrip("\r\n")
+            if input == "":
+                continue
+
+            buddy = acc.add_buddy(input)
+            cb = MyBuddyCallback(buddy)
+            buddy.set_callback(cb)
+
+            buddy.subscribe()
+
+        elif input == "t":
+            acc.set_basic_status(not acc.info().online_status)
+
+        elif input == "i":
+            if not buddy:
+                print "Add buddy first"
+                continue
+
+            buddy.send_typing_ind(True)
+
+            print "Type the message: ", 
+            input = sys.stdin.readline().rstrip("\r\n")
+            if input == "":
+                buddy.send_typing_ind(False)
+                continue
+            
+            buddy.send_pager(input)
+            
+        elif input == "q":
+            break
+
+    # Shutdown the library
+    lib.destroy()
+    lib = None
+
+except pj.Error, e:
+    print "Exception: " + str(e)
+    lib.destroy()
+    lib = None
+