Ticket #48.

This is not finished yet. More work than what I expected but the main part is done.
It will need a lot of testing... There is still a bug when activating a new extension
in development mode (ie. with python web server), I think it does not occur behind
a real web server.

extensions/__init__.py

@@ -2,29 +2,29 @@
 import os
 import re
 
-extensions = []
+extensions = {}
 
 def loadextensions():
-    from django.conf import settings
+    from admin.models import Extension
 
-    expr = re.compile("mailng\.extensions\.(.+)")
-    for app in settings.INSTALLED_APPS:
-        m = expr.match(app)
-        if not m:
-            continue
-        module = __import__(m.group(1), globals(), locals(), ['main'])
+    exts = Extension.objects.filter(enabled=True)
+    for ext in exts:
+        module = __import__(ext.name, globals(), locals(), ['main'])
         module.main.init()
-        globals()['extensions'] += [module]
+        globals()['extensions'][ext] = module
     
 def loadmenus():
     result = []
-    for mod in extensions:
+    for name, mod in extensions.iteritems():
         u = mod.main.urls()
         if u == ():
             continue
         result += (u,)
     return result
 
+def isenabled(ext):
+    return extensions.has_key(ext)
+
 def list_extensions():
     basedir = "extensions"
     result = []
@@ -39,7 +39,13 @@ def list_extensions():
         if isvalid:
             module = __import__(d, globals(), locals(), ['main'])
             try:
-                result += [module.main.infos()]
+                infos = module.main.infos()
+                infos["id"] = d
+                if os.path.isdir("%s/%s/templates" % (basedir, d)):
+                    infos["templates"] = True
+                else:
+                    infos["templates"] = False
+                result += [infos]
             except AttributeError:
                 pass
     return result

extensions/amavis_quarantine/main.py

@@ -46,6 +46,10 @@ def init():
                         "/var/amavis/amavisd.sock",
                         help="")
 
+def destroy():
+    events.unregister("UserMenuDisplay", menu)
+    parameters.unregister_app("amavis_quarantine")
+
 def urls():
     return (r'^mailng/quarantine/', 
             include('mailng.extensions.amavis_quarantine.urls'))

extensions/stats/main.py

@@ -41,6 +41,9 @@ def init():
     parameters.register("stats", "IMG_ROOTDIR", "string", "/tmp/mailng",
                         help=_("Path to directory where PNG files are stored"))
 
+def destroy():
+    events.unregister("AdminMenuDisplay", menu)
+
 def urls():
     return (r'^mailng/stats/', 
             include('mailng.extensions.stats.urls'))

extensions/webmail/imap_listing.py

@@ -16,7 +16,6 @@ from mailng.lib import tables, imap_utf7, parameters
 class WMtable(tables.Table):
     tableid = "emails"
     idkey = "imapid"
-#    selection = tables.SelectionColumn("selection", width="20px", first=True)
     _1_flags = tables.ImgColumn("flags", width="4%",
                                 header="<input type='checkbox' name='toggleselect' id='toggleselect' />")
     _2_subject = tables.Column("subject", label=_("Subject"), 

extensions/webmail/main.py

@@ -34,6 +34,11 @@ def init():
     parameters.register("webmail", "SMTP_SECURED", "list_yesno", "no",
                         help=_("Use a secured connection to access SMTP server"))
 
+def destroy():
+    events.unregister("UserMenuDisplay", menu)
+    events.unregister("UserLogin", userlogin)
+    parameters.unregister_app("webmail")
+
 def infos():
     return {
         "name" : "Webmail",
@@ -139,14 +144,12 @@ def viewmail(request, folder, mail_id=None):
 def getmailcontent(request, folder, mail_id):
     msg = fetchmail(request, folder, mail_id, True)
     if "class" in msg.keys() and msg["class"] == "unseen":
-        #IMAPconnector(request).msg_read(*msg["imapid"].split("/"))
         IMAPconnector(request).msg_read(folder, mail_id)
         email = ImapEmail(msg, mode="html", links="1")
     try:
         pageid = request.session["page"]
     except KeyError:
         pageid = "1"
-    #folder, imapid = msg["imapid"].split("/")
     return _render(request, "common/viewmail.html", {
             "headers" : email.render_headers(folder, mail_id), 
             "folder" : folder, "imapid" : mail_id, "mailbody" : email.body,