Minor extensibility improvements.

* Allow exceptions.handle to include user-defined exception types.
    Fixes bug 948536.
  * Adds a wrapper around the form/table header/table in the base
    _data_table.html template for easier targeting/styling.
  * Moves the rest of the main nav templating into a single template
    for easier customization. Fixes bug 948508.

Change-Id: I045c29744ee01f60b080f2c1bbdc79ea5acf1b86

horizon/base.py

@@ -49,6 +49,9 @@ HORIZON_CONFIG = {
     # Name of a default dashboard; defaults to first alphabetically if None
     'default_dashboard': None,
     'user_home': None,
+    'exceptions': {'unauthorized': [],
+                   'not_found': [],
+                   'recoverable': []}
 }
 
 

horizon/exceptions.py

@@ -21,6 +21,7 @@ Exceptions raised by the Horizon code and the machinery for handling them.
 import logging
 import sys
 
+from django.conf import settings
 from django.contrib import messages
 from django.utils.translation import ugettext as _
 from cloudfiles import errors as swiftclient
@@ -107,6 +108,10 @@ class HandledException(HorizonException):
         self.wrapped = wrapped
 
 
+HORIZON_CONFIG = getattr(settings, "HORIZON_CONFIG", {})
+EXCEPTION_CONFIG = HORIZON_CONFIG.get("exceptions", {})
+
+
 UNAUTHORIZED = (keystoneclient.Unauthorized,
                 keystoneclient.Forbidden,
                 novaclient.Unauthorized,
@@ -115,12 +120,15 @@ UNAUTHORIZED = (keystoneclient.Unauthorized,
                 glanceclient.NotAuthorized,
                 swiftclient.AuthenticationFailed,
                 swiftclient.AuthenticationError)
+UNAUTHORIZED += tuple(EXCEPTION_CONFIG.get('unauthorized', []))
 
 NOT_FOUND = (keystoneclient.NotFound,
              novaclient.NotFound,
              glanceclient.NotFound,
              swiftclient.NoSuchContainer,
              swiftclient.NoSuchObject)
+NOT_FOUND += tuple(EXCEPTION_CONFIG.get('not_found', []))
+
 
 # NOTE(gabriel): This is very broad, and may need to be dialed in.
 RECOVERABLE = (keystoneclient.ClientException,
@@ -128,6 +136,7 @@ RECOVERABLE = (keystoneclient.ClientException,
                glanceclient.GlanceException,
                swiftclient.Error,
                AlreadyExists)
+RECOVERABLE += tuple(EXCEPTION_CONFIG.get('recoverable', []))
 
 
 def handle(request, message=None, redirect=None, ignore=False, escalate=False):

horizon/templates/horizon/_nav_list.html

@@ -1,4 +1,7 @@
-{% load horizon %}
+{% load horizon i18n %}
+<h1 class="brand clearfix"><a href="{% url horizon:user_home %}">{% trans "OpenStack Dashboard" %}</a></h1>
+<div class='clearfix'>
+  <ul class="nav nav-tabs">
     {% for component in components %}
     {% if user|can_haz:component %}
         <li{% if current == component.slug %} class="active"{% endif %}>
@@ -6,4 +9,5 @@
         </li>
     {% endif %}
   {% endfor %}
-
+  </ul>
+</div>

horizon/templates/horizon/common/_data_table.html

@@ -1,3 +1,4 @@
+<div class="table_wrapper">
   <form action="{{ table.get_absolute_url }}" method="POST">{% csrf_token %}
   <div class='table_header'>
     <h3 class='table_title'>{{ table }}</h3>
@@ -35,3 +36,4 @@
   </table>
   {% endwith %}
   </form>
+</div>

horizon/templates/horizon/common/_sidebar.html

@@ -1,12 +1,7 @@
 {% load horizon i18n %}
 
 <div class='sidebar'>
-  <h1 class="brand clearfix"><a href="{% url horizon:user_home %}">{% trans "OpenStack Dashboard" %}</a></h1>
-  <div class='clearfix'>
-    <ul class="nav nav-tabs">
   {% horizon_main_nav %}
-    </ul>
-  </div>
 
   {% if request.horizon.dashboard.supports_tenants %}
   <div id="tenant_switcher" class="dropdown switcher_bar" tabindex='1'>