Use breadcrumb nav across Horizon

We've added breadcrumbs to the Details pages, but its a pretty
inconsistent experience. This patch adds breadcrumbs to the base
template, making the breadcrumbs consistent across all pages; this will
be useful when the side nav is hidden for responsive design. This patch
also makes the breadcrumbs on the detail pages behave better with
theming.

- Made the detail header and actions avoid using floats
- Moved breadcrumb truncating to the front end, so that it can be
  customised easily via CSS
- Manually added breadcrumb for ngcontainers page
- Removed overly specific HTML check from Key Pair Details test
- Fixed <dt> alignment on Key Pair Details page

Closes-Bug: 1554812
Partially-Implements: blueprint navigation-improvements
Change-Id: Ibcd4c369b5d8ad62f7c839c0deeaefc750677b40

1 files changed, 40 insertions, 7 deletions

diff --git a/horizon/templatetags/breadcrumb_nav.py b/horizon/templatetags/breadcrumb_nav.py
index 4d2bfcb4b..f2cacb389 100644
--- a/horizon/templatetags/breadcrumb_nav.py
+++ b/horizon/templatetags/breadcrumb_nav.py
@@ -1,4 +1,4 @@
-# Copyright 2015 Cisco Systems, Inc.
+# Copyright 2016 Cisco Systems, Inc.
 #
 #    Licensed under the Apache License, Version 2.0 (the "License"); you may
 #    not use this file except in compliance with the License. You may obtain
@@ -17,11 +17,44 @@ from django import template
 register = template.Library()
 
 
-@register.inclusion_tag('horizon/common/_breadcrumb_nav.html',
+@register.inclusion_tag('bootstrap/breadcrumb.html',
                         takes_context=True)
 def breadcrumb_nav(context):
-    return {'actions': context.get('actions'),
-            'breadcrumb': context.get('custom_breadcrumb'),
-            'url': context.get('url'),
-            'page_title': context['page_title'],
-            'panel': context.request.horizon['panel'], }
+    """A logic heavy function for automagically creating a breadcrumb.
+    It uses the dashboard, panel group(if it exists), then current panel.
+    Can also use a "custom_breadcrumb" context item to add extra items.
+    """
+    breadcrumb = []
+    dashboard = context.request.horizon['dashboard']
+    try:
+        panel_groups = dashboard.get_panel_groups()
+    except KeyError:
+        panel_groups = None
+    panel_group = None
+    panel = context.request.horizon['panel']
+
+    # Add panel group, if there is one
+    if panel_groups:
+        for group in panel_groups.values():
+            if panel.slug in group.panels and group.slug != 'default':
+                panel_group = group
+                break
+
+    # Remove panel reference if that is the current page
+    if panel.get_absolute_url() == context.request.path:
+        panel = None
+
+    # Get custom breadcrumb, if there is one.
+    custom_breadcrumb = context.get('custom_breadcrumb')
+
+    # Build list of tuples (name, optional url)
+    breadcrumb.append((dashboard.name,))
+    if panel_group:
+        breadcrumb.append((panel_group.name,))
+    if panel:
+        breadcrumb.append((panel.name, panel.get_absolute_url()))
+    if custom_breadcrumb:
+        breadcrumb.extend(custom_breadcrumb)
+    breadcrumb.append((context.get('page_title'),))
+
+    return {'breadcrumb': breadcrumb}