diff options
Diffstat (limited to 'ranger/shared/settings.py')
| -rw-r--r-- | ranger/shared/settings.py | 223 |
1 files changed, 135 insertions, 88 deletions
diff --git a/ranger/shared/settings.py b/ranger/shared/settings.py index debe816d..054f5587 100644 --- a/ranger/shared/settings.py +++ b/ranger/shared/settings.py @@ -15,8 +15,9 @@ import os import types -from inspect import isclass, ismodule +from inspect import isclass, ismodule, isfunction import ranger +from ranger.ext.signal_dispatcher import SignalDispatcher from ranger.ext.openstruct import OpenStruct from ranger.gui.colorscheme import ColorScheme @@ -40,7 +41,7 @@ ALLOWED_SETTINGS = { 'preview_files': bool, 'preview_directories': bool, 'flushinput': bool, - 'colorscheme': str, + 'colorscheme': (str, ColorScheme), 'colorscheme_overlay': (type(None), type(lambda:0)), 'hidden_filter': lambda x: isinstance(x, str) or hasattr(x, 'match'), } @@ -50,23 +51,140 @@ COMPAT_MAP = { 'sort_directories_first': 'directories_first', } + +class SettingObject(SignalDispatcher): + def __init__(self): + SignalDispatcher.__init__(self) + self.__dict__['_settings'] = dict() + self.__dict__['_setting_sources'] = list() + self.signal_bind('core.setting', + self._setting_set_raw_signal, priority=0.2) + + def __setattr__(self, name, value): + if name[0] == '_': + self.__dict__[name] = value + else: + assert name in self._settings, "No such setting: {0}!".format(name) + assert self._check_type(name, value) + kws = dict(setting=name, value=value, + previous=self._settings[name]) + self.signal_emit('core.setting', **kws) + self.signal_emit('core.setting.'+name, **kws) + + def __getattr__(self, name): +# if name[0] == '_': +# return 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_setting(name, value) + self.__setattr__(name, value) + return self._settings[name] + + 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_setting(self, name, value): + self._settings[name] = value + + def _setting_set_raw_signal(self, signal): + self._settings[signal.setting] = signal.value + +def _colorscheme_name_to_class(signal): + # Find the colorscheme. First look for it at ~/.ranger/colorschemes, + # then at RANGERDIR/colorschemes. If the file contains a class + # named Scheme, it is used. Otherwise, an arbitrary other class + # is picked. + if not signal.setting == 'colorscheme': return + if isinstance(signal.value, ColorScheme): return + + scheme_name = signal.value + usecustom = not ranger.arg.clean + + def exists(colorscheme): + return os.path.exists(colorscheme + '.py') + + def is_scheme(x): + return isclass(x) and issubclass(x, ColorScheme) + + # create ~/.ranger/colorschemes/__init__.py if it doesn't exist + if usecustom: + if os.path.exists(ranger.relpath_conf('colorschemes')): + initpy = ranger.relpath_conf('colorschemes', '__init__.py') + if not os.path.exists(initpy): + open(initpy, 'a').close() + + if usecustom and \ + exists(ranger.relpath_conf('colorschemes', scheme_name)): + scheme_supermodule = 'colorschemes' + elif exists(ranger.relpath('colorschemes', scheme_name)): + scheme_supermodule = 'ranger.colorschemes' + else: + scheme_supermodule = None # found no matching file. + + if scheme_supermodule is None: + # XXX: dont print while curses is running + print("ERROR: colorscheme not found, fall back to builtin scheme") + if ranger.arg.debug: + raise Exception("Cannot locate colorscheme!") + signal.value = ColorScheme() + else: + scheme_module = getattr(__import__(scheme_supermodule, + globals(), locals(), [scheme_name], 0), scheme_name) + assert ismodule(scheme_module) + if hasattr(scheme_module, 'Scheme') \ + and is_scheme(scheme_module.Scheme): + signal.value = scheme_module.Scheme() + else: + for name, var in scheme_module.__dict__.items(): + if var != ColorScheme and is_scheme(var): + signal.value = var() + break + else: + raise Exception("The module contains no valid colorscheme!") + + # Making the colorscheme "SettingsAware" doesn't work because + # of circular imports, so we do it like this: + signal.value.settings = signal.origin + + # -- globalize the settings -- class SettingsAware(object): settings = OpenStruct() @staticmethod def _setup(): - settings = OpenStruct() + settings = SettingObject() + settings.signal_bind('core.setting', + _colorscheme_name_to_class, priority=1) - from ranger.defaults import options - for setting in ALLOWED_SETTINGS: - try: - settings[setting] = getattr(options, setting) - except AttributeError: - raise Exception("The option `{0}' was not defined" \ - " in the defaults!".format(setting)) + 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!" - import sys if not ranger.arg.clean: # overwrite single default options with custom options try: @@ -74,14 +192,12 @@ class SettingsAware(object): except ImportError: pass else: - for setting in ALLOWED_SETTINGS: - try: - settings[setting] = getattr(my_options, setting) - except AttributeError: - pass + settings._setting_sources.append(my_options) + + # For backward compatibility: for new, old in COMPAT_MAP.items(): try: - settings[new] = getattr(my_options, old) + setattr(my_options, new, getattr(my_options, old)) print("Warning: the option `{0}'"\ " was renamed to `{1}'\nPlease update"\ " your configuration file soon." \ @@ -89,84 +205,15 @@ class SettingsAware(object): except AttributeError: pass - assert check_option_types(settings) - - # Find the colorscheme. First look for it at ~/.ranger/colorschemes, - # then at RANGERDIR/colorschemes. If the file contains a class - # named Scheme, it is used. Otherwise, an arbitrary other class - # is picked. - - scheme_name = settings.colorscheme - usecustom = not ranger.arg.clean - - def exists(colorscheme): - return os.path.exists(colorscheme + '.py') - - def is_scheme(x): - return isclass(x) and issubclass(x, ColorScheme) - - # create ~/.ranger/colorschemes/__init__.py if it doesn't exist - if usecustom: - if os.path.exists(ranger.relpath_conf('colorschemes')): - initpy = ranger.relpath_conf('colorschemes', '__init__.py') - if not os.path.exists(initpy): - open(initpy, 'a').close() - - if usecustom and \ - exists(ranger.relpath_conf('colorschemes', scheme_name)): - scheme_supermodule = 'colorschemes' - elif exists(ranger.relpath('colorschemes', scheme_name)): - scheme_supermodule = 'ranger.colorschemes' - else: - scheme_supermodule = None # found no matching file. - - if scheme_supermodule is None: - print("ERROR: colorscheme not found, fall back to builtin scheme") - if ranger.arg.debug: - raise Exception("Cannot locate colorscheme!") - settings.colorscheme = ColorScheme() - else: - scheme_module = getattr(__import__(scheme_supermodule, - globals(), locals(), [scheme_name], 0), scheme_name) - assert ismodule(scheme_module) - if hasattr(scheme_module, 'Scheme') \ - and is_scheme(scheme_module.Scheme): - settings.colorscheme = scheme_module.Scheme() - else: - for name, var in scheme_module.__dict__.items(): - if var != ColorScheme and is_scheme(var): - settings.colorscheme = var() - break - else: - raise Exception("The module contains no " \ - "valid colorscheme!") - - # Making the colorscheme SettingsAware doesn't work because - # of circular imports, so we do it like this: - settings.colorscheme.settings = settings - try: import apps except ImportError: from ranger.defaults import apps - settings.apps = apps + settings._raw_set_setting('apps', apps) try: import keys except ImportError: from ranger.defaults import keys - settings.keys = keys + settings._raw_set_setting('keys', keys) SettingsAware.settings = settings - -def check_option_types(opt): - import inspect - for name, typ in ALLOWED_SETTINGS.items(): - optvalue = getattr(opt, name) - if inspect.isfunction(typ): - assert typ(optvalue), \ - "The option `" + name + "' has an incorrect type!" - else: - assert isinstance(optvalue, typ), \ - "The option `" + name + "' has an incorrect type!"\ - " Got " + str(type(optvalue)) + ", expected " + str(typ) + "!" - return True |