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from cms.exceptions import PluginAllreadyRegistered
from django.conf import settings
from cms.plugin_base import CMSPluginBase
from cms.utils.helpers import reversion_register
class PluginPool(object):
def __init__(self):
self.plugins = {}
self.discovered = False
def discover_plugins(self):
if self.discovered:
return
for app in settings.INSTALLED_APPS:
__import__(app, {}, {}, ['cms_plugins'])
self.discovered = True
def register_plugin(self, plugin):
#from cms.plugins import CMSPluginBase
assert issubclass(plugin, CMSPluginBase)
if plugin.__name__ in self.plugins.keys():
raise PluginAllreadyRegistered, "[%s] a plugin with this name is already registered" % plugin.__name__
plugin.value = plugin.__name__
self.plugins[plugin.__name__] = plugin
if 'reversion' in settings.INSTALLED_APPS:
try:
from reversion.registration import RegistrationError
except ImportError:
from reversion.revisions import RegistrationError
try:
reversion_register(plugin.model, follow=["cmsplugin_ptr"])
except RegistrationError:
pass
def get_all_plugins(self, placeholder=None):
self.discover_plugins()
plugins = self.plugins.values()[:]
plugins.sort(key=lambda obj: unicode(obj.name))
if placeholder:
final_plugins = []
for plugin in plugins:
found = True
if settings.CMS_PLACEHOLDER_CONF:
if placeholder in settings.CMS_PLACEHOLDER_CONF:
if "plugins" in settings.CMS_PLACEHOLDER_CONF[placeholder] \
and not plugin.__name__ in settings.CMS_PLACEHOLDER_CONF[placeholder]["plugins"]:
found = False
if found:
final_plugins.append(plugin)
plugins = final_plugins
return plugins
def get_text_enabled_plugins(self, placeholder):
plugins = self.get_all_plugins(placeholder)
final = []
for plugin in plugins:
if plugin.text_enabled:
final.append(plugin)
return final
def get_plugin(self, name):
"""
Retrieve a plugin from the cache.
"""
self.discover_plugins()
return self.plugins[name]
plugin_pool = PluginPool()
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