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"""Manager to read and modify frontend config data in JSON files.
"""
# Copyright (c) Jupyter Development Team.
# Distributed under the terms of the Modified BSD License.
import os.path
from traitlets.config.manager import BaseJSONConfigManager, recursive_update
from jupyter_core.paths import jupyter_config_dir, jupyter_config_path
from traitlets import Unicode, Instance, List
from traitlets.config import LoggingConfigurable
class ConfigManager(LoggingConfigurable):
"""Config Manager used for storing notebook frontend config"""
# Public API
def get(self, section_name):
"""Get the config from all config sections."""
config = {}
# step through back to front, to ensure front of the list is top priority
for p in self.read_config_path[::-1]:
cm = BaseJSONConfigManager(config_dir=p)
recursive_update(config, cm.get(section_name))
return config
def set(self, section_name, data):
"""Set the config only to the user's config."""
return self.write_config_manager.set(section_name, data)
def update(self, section_name, new_data):
"""Update the config only to the user's config."""
return self.write_config_manager.update(section_name, new_data)
# Private API
read_config_path = List(Unicode())
def _read_config_path_default(self):
return [os.path.join(p, 'nbconfig') for p in jupyter_config_path()]
write_config_dir = Unicode()
def _write_config_dir_default(self):
return os.path.join(jupyter_config_dir(), 'nbconfig')
write_config_manager = Instance(BaseJSONConfigManager)
def _write_config_manager_default(self):
return BaseJSONConfigManager(config_dir=self.write_config_dir)
def _write_config_dir_changed(self, name, old, new):
self.write_config_manager = BaseJSONConfigManager(config_dir=self.write_config_dir)
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