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# Copyright (C) 2009, 2010 Roman Zimbelmann <romanz@lavabit.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import sys
from inspect import isfunction
import ranger
from ranger.ext.signal_dispatcher import SignalDispatcher
from ranger.ext.openstruct import OpenStruct
ALLOWED_SETTINGS = {
'autosave_bookmarks': bool,
'collapse_preview': bool,
'colorscheme_overlay': (type(None), type(lambda:0)),
'colorscheme': str,
'column_ratios': (tuple, list, set),
'dirname_in_tabs': bool,
'display_size_in_main_column': bool,
'display_size_in_status_bar': bool,
'draw_bookmark_borders': bool,
'draw_borders': bool,
'flushinput': bool,
'hidden_filter': lambda x: isinstance(x, str) or hasattr(x, 'match'),
'max_console_history_size': (int, type(None)),
'max_history_size': (int, type(None)),
'mouse_enabled': bool,
'preview_directories': bool,
'preview_files': bool,
'preview_script': (str, type(None)),
'save_console_history': bool,
'scroll_offset': int,
'shorten_title': int, # Note: False is an instance of int
'show_cursor': bool,
'show_hidden_bookmarks': bool,
'show_hidden': bool,
'sort_case_insensitive': bool,
'sort_directories_first': bool,
'sort_reverse': bool,
'sort': str,
'tilde_in_titlebar': bool,
'update_title': bool,
'xterm_alt_key': bool,
}
class SettingObject(SignalDispatcher):
def __init__(self):
SignalDispatcher.__init__(self)
self.__dict__['_settings'] = dict()
self.__dict__['_setting_sources'] = list()
for name in ALLOWED_SETTINGS:
self.signal_bind('setopt.'+name,
self._raw_set_with_signal, priority=0.2)
def __setattr__(self, name, value):
if name[0] == '_':
self.__dict__[name] = value
else:
assert name in ALLOWED_SETTINGS, "No such setting: {0}!".format(name)
if name not in self._settings:
getattr(self, name)
assert self._check_type(name, value)
kws = dict(setting=name, value=value,
previous=self._settings[name])
self.signal_emit('setopt', **kws)
self.signal_emit('setopt.'+name, **kws)
def __getattr__(self, name):
assert name in ALLOWED_SETTINGS or name in self._settings, \
"No such setting: {0}!".format(name)
try:
return self._settings[name]
except:
for struct in self._setting_sources:
try: value = getattr(struct, name)
except: pass
else: break
else:
raise Exception("The option `{0}' was not defined" \
" in the defaults!".format(name))
assert self._check_type(name, value)
self._raw_set(name, value)
self.__setattr__(name, value)
return self._settings[name]
def __iter__(self):
for x in self._settings:
yield x
def types_of(self, name):
try:
typ = ALLOWED_SETTINGS[name]
except KeyError:
return tuple()
else:
if isinstance(typ, tuple):
return typ
else:
return (typ, )
def _check_type(self, name, value):
typ = ALLOWED_SETTINGS[name]
if isfunction(typ):
assert typ(value), \
"The option `" + name + "' has an incorrect type!"
else:
assert isinstance(value, typ), \
"The option `" + name + "' has an incorrect type!"\
" Got " + str(type(value)) + ", expected " + str(typ) + "!"
return True
__getitem__ = __getattr__
__setitem__ = __setattr__
def _raw_set(self, name, value):
self._settings[name] = value
def _raw_set_with_signal(self, signal):
self._settings[signal.setting] = signal.value
# -- globalize the settings --
class SettingsAware(object):
settings = OpenStruct()
@staticmethod
def _setup():
settings = SettingObject()
from ranger.gui.colorscheme import _colorscheme_name_to_class
settings.signal_bind('setopt.colorscheme',
_colorscheme_name_to_class, priority=1)
if not ranger.arg.clean:
# overwrite single default options with custom options
sys.path[0:0] = [ranger.arg.confdir]
try:
import options as my_options
except ImportError:
pass
else:
settings._setting_sources.append(my_options)
del sys.path[0]
from ranger.defaults import options as default_options
settings._setting_sources.append(default_options)
assert all(hasattr(default_options, setting) \
for setting in ALLOWED_SETTINGS), \
"Ensure that all options are defined in the defaults!"
SettingsAware.settings = settings
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