119 lines
3.9 KiB
Python
119 lines
3.9 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2012 Nebula, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from __future__ import absolute_import
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import copy
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from django import template
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from horizon.base import Horizon
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register = template.Library()
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@register.filter
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def can_haz(user, component):
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"""
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Checks if the given user meets the requirements for the component. This
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includes both user roles and services in the service catalog.
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"""
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if hasattr(user, 'roles'):
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user_roles = set([role['name'].lower() for role in user.roles])
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else:
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user_roles = set([])
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roles_statisfied = set(getattr(component, 'roles', [])) <= user_roles
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if hasattr(user, 'roles'):
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services = set([service['type'] for service in user.service_catalog])
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else:
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services = set([])
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services_statisfied = set(getattr(component, 'services', [])) <= services
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if roles_statisfied and services_statisfied:
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return True
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return False
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@register.filter
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def can_haz_list(components, user):
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return [component for component in components if can_haz(user, component)]
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@register.inclusion_tag('horizon/_nav_list.html', takes_context=True)
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def horizon_main_nav(context):
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""" Generates top-level dashboard navigation entries. """
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if 'request' not in context:
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return {}
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current_dashboard = context['request'].horizon.get('dashboard', None)
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dashboards = []
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for dash in Horizon.get_dashboards():
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if callable(dash.nav) and dash.nav(context):
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dashboards.append(dash)
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elif dash.nav:
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dashboards.append(dash)
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return {'components': dashboards,
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'user': context['request'].user,
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'current': getattr(current_dashboard, 'slug', None)}
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@register.inclusion_tag('horizon/_subnav_list.html', takes_context=True)
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def horizon_dashboard_nav(context):
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""" Generates sub-navigation entries for the current dashboard. """
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if 'request' not in context:
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return {}
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dashboard = context['request'].horizon['dashboard']
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if isinstance(dashboard.panels, dict):
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panels = copy.copy(dashboard.get_panels())
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else:
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panels = {dashboard.name: dashboard.get_panels()}
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for heading, items in panels.iteritems():
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temp_panels = []
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for panel in items:
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if callable(panel.nav) and panel.nav(context):
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temp_panels.append(panel)
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elif not callable(panel.nav) and panel.nav:
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temp_panels.append(panel)
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panels[heading] = temp_panels
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non_empty_panels = dict([(k, v) for k, v in panels.items() if len(v) > 0])
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return {'components': non_empty_panels,
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'user': context['request'].user,
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'current': context['request'].horizon['panel'].slug}
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class JSTemplateNode(template.Node):
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""" Helper node for the ``jstemplate`` template tag. """
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def __init__(self, nodelist):
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self.nodelist = nodelist
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def render(self, context, ):
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output = self.nodelist.render(context)
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return output.replace('[[', '{{').replace(']]', '}}')
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@register.tag
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def jstemplate(parser, token):
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"""
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Replaces ``[[`` and ``]]`` with ``{{`` and ``}}`` to avoid conflicts
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with Django's template engine when using any of the Mustache-based
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templating libraries.
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"""
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nodelist = parser.parse(('endjstemplate',))
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parser.delete_first_token()
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return JSTemplateNode(nodelist)
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