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)