def load(self, ignore_blacklist=False):
""" Attempt to load the plugin we represent. """
if self.is_loaded:
log.warning('Trying to load already loaded plugin %r.' %
self.data['name'])
return
if not ignore_blacklist and self.is_blacklisted:
raise addons.DependencyError('Plugin %r is blacklisted.' %
self.data['name'])
# Check our dependencies for safety.
addons.check_dependencies(self)
# Load our dependencies.
for name in self.requires.iterkeys():
if name == '__app__' or (':' in name and not
name.startswith('plugin:')):
continue
dep = addons.get('plugin', name)
# Make sure we're needed.
if not self.name in dep.needed_by:
dep.needed_by.append(self.name)
# If it's loaded, just continue.
if dep.is_loaded:
continue
dep.load()
# Okay, now load!
self._do_load()
def is_active(self, val):
""" Enable or disable the plugin. """
val = bool(val)
if val == self._is_active:
return
# Don't set _is_active just yet.
if val:
# Check our dependencies first.
addons.check_dependencies(self._info)
# Make sure those dependencies are loaded.
self._activate_dependencies()
# Connect our signals.
self._connect_signals()
# Finally, set ourselves active and update any UI elements for
# this plugin.
self._is_active = True
self._info.update_ui()
log.info('Activated plugin %r.' % self._info.data['name'])
else:
# If we're already on, we can assume we don't need to check our
# dependencies. We *do* have to deactivate the plugins that depend
# on us though.
self._deactivate_dependants()
# Disconnect the signals and slots.
self._disconnect_signals()
# And finally, set us as inactive and update UI.
self._is_active = False
self._info.update_ui()
log.info('Deactivated plugin %r.' % self._info.data['name'])
