第三百九十七节，Django+Xadmin打造上线标准的在线教育平台—其他插件使用说，主题本地化设置

#coding:utf-8
from __future__ import print_function
import httplib2
from django.template import loader
from django.core.cache import cache
from django.utils import six
from django.utils.translation import ugettext as _
from xadmin.sites import site
from xadmin.models import UserSettings
from xadmin.views import BaseAdminPlugin, BaseAdminView
from xadmin.util import static, json
import six
if six.PY2:
import urllib
else:
import urllib.parse

THEME_CACHE_KEY = 'xadmin_themes'

class ThemePlugin(BaseAdminPlugin):

enable_themes = False
# {'name': 'Blank Theme', 'description': '...', 'css': 'http://...', 'thumbnail': '...'}
user_themes = None
use_bootswatch = False
default_theme = static('xadmin/css/themes/bootstrap-xadmin.css')
bootstrap2_theme = static('xadmin/css/themes/bootstrap-theme.css')

# 将主题本地化，下载好主题设置下载好的主题样式文件
Solar_theme = static("xadmin/css/themes/Solar_theme.css")
Cerulean_theme = static("xadmin/css/themes/Cerulean_theme.css")
Cosmo_theme = static("xadmin/css/themes/Cosmo_theme.css")
Cyborg_theme = static("xadmin/css/themes/Cyborg_theme.css")
Darkly_theme = static("xadmin/css/themes/Darkly_theme.css")
Flatly_theme = static("xadmin/css/themes/Flatly_theme.css")
Journal_theme = static("xadmin/css/themes/Journal_theme.css")
Lumen_theme = static("xadmin/css/themes/Lumen_theme.css")
Paper_theme = static("xadmin/css/themes/Paper_theme.css")
Readable_theme = static("xadmin/css/themes/Readable_theme.css")
Sandstone_theme = static("xadmin/css/themes/Sandstone_theme.css")
Simplex_theme = static("xadmin/css/themes/Simplex_theme.css")
Slate_theme = static("xadmin/css/themes/Slate_theme.css")
Spacelab_theme = static("xadmin/css/themes/Spacelab_theme.css")
Superhero_theme = static("xadmin/css/themes/Superhero_theme.css")
United_theme = static("xadmin/css/themes/United_theme.css")

def init_request(self, *args, **kwargs):
return self.enable_themes

def _get_theme(self):
if self.user:
try:
return UserSettings.objects.get(user=self.user, key="site-theme").value
except Exception:
pass
if '_theme' in self.request.COOKIES:
if six.PY2:
func = urllib.unquote
else:
func = urllib.parse.unquote
return func(self.request.COOKIES['_theme'])
return self.default_theme

def get_context(self, context):
context['site_theme'] = self._get_theme()
return context

# Media
def get_media(self, media):
return media + self.vendor('jquery-ui-effect.js', 'xadmin.plugin.themes.js')

# Block Views
def block_top_navmenu(self, context, nodes):

themes = [
{'name': _(u"Default"), 'description': _(u"Default bootstrap theme"), 'css': self.default_theme},
# {'name': _(u"Bootstrap2"), 'description': _(u"Bootstrap 2.x theme"), 'css': self.bootstrap2_theme},

# 设置主题静态加载样式
{'name': _(u"深绿"), 'description': _(u"深绿"), 'css': self.Solar_theme},
{'name': _(u"天蓝"), 'description': _(u"天蓝"), 'css': self.Cerulean_theme},
{'name': _(u"蓝黑"), 'description': _(u"蓝黑"), 'css': self.Cosmo_theme},
{'name': _(u"黑色"), 'description': _(u"黑色"), 'css': self.Cyborg_theme},
{'name': _(u"绿黑"), 'description': _(u"绿黑"), 'css': self.Darkly_theme},
{'name': _(u"绿蓝"), 'description': _(u"绿蓝"), 'css': self.Flatly_theme},
{'name': _(u"粉红"), 'description': _(u"粉红"), 'css': self.Journal_theme},
{'name': _(u"白色"), 'description': _(u"白色"), 'css': self.Lumen_theme},
{'name': _(u"深蓝"), 'description': _(u"深蓝"), 'css': self.Paper_theme},
{'name': _(u"白蓝"), 'description': _(u"白蓝"), 'css': self.Readable_theme},
{'name': _(u"草绿"), 'description': _(u"草绿"), 'css': self.Sandstone_theme},
{'name': _(u"红色"), 'description': _(u"红色"), 'css': self.Simplex_theme},
{'name': _(u"灰黑"), 'description': _(u"灰黑"), 'css': self.Slate_theme},
{'name': _(u"灰蓝"), 'description': _(u"灰蓝"), 'css': self.Spacelab_theme},
{'name': _(u"深灰"), 'description': _(u"深灰"), 'css': self.Superhero_theme},
{'name': _(u"橙色"), 'description': _(u"橙色"), 'css': self.United_theme},
]

select_css = context.get('site_theme', self.default_theme)

if self.user_themes:
themes.extend(self.user_themes)

if self.use_bootswatch:
ex_themes = cache.get(THEME_CACHE_KEY)
if ex_themes:
themes.extend(json.loads(ex_themes))
else:
ex_themes = []
try:
pass

# 默认xadmin是通过下面这个json文件来动态加载的,将它注释掉将不会动态加载主题

# h = httplib2.Http()
# resp, content = h.request("https://bootswatch.com/api/3.json", 'GET', '',
#     headers={"Accept": "application/json", "User-Agent": self.request.META['HTTP_USER_AGENT']})
# if six.PY3:
#     content = content.decode()
# watch_themes = json.loads(content)['themes']
# ex_themes.extend([
#     {'name': t['name'], 'description': t['description'],
#         'css': t['cssMin'], 'thumbnail': t['thumbnail']}
#     for t in watch_themes])
except Exception as e:
print(e)

cache.set(THEME_CACHE_KEY, json.dumps(ex_themes), 24 * 3600)
themes.extend(ex_themes)

nodes.append(loader.render_to_string('xadmin/blocks/comm.top.theme.html', {'themes': themes, 'select_css': select_css}))

site.register_plugin(ThemePlugin, BaseAdminView)