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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 notebook.config_manager import BaseJSONConfigManager, recursive_update
- from jupyter_core.paths import jupyter_config_dir, jupyter_config_path
- from traitlets import Unicode, Instance, List, observe, default
- 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())
- @default('read_config_path')
- def _default_read_config_path(self):
- return [os.path.join(p, 'nbconfig') for p in jupyter_config_path()]
- write_config_dir = Unicode()
- @default('write_config_dir')
- def _default_write_config_dir(self):
- return os.path.join(jupyter_config_dir(), 'nbconfig')
- write_config_manager = Instance(BaseJSONConfigManager)
- @default('write_config_manager')
- def _default_write_config_manager(self):
- return BaseJSONConfigManager(config_dir=self.write_config_dir)
- @observe('write_config_dir')
- def _update_write_config_dir(self, change):
- self.write_config_manager = BaseJSONConfigManager(config_dir=self.write_config_dir)
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