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"""idlelib.config -- Manage IDLE configuration information.
The comments at the beginning of config-main.def describe the
configuration files and the design implemented to update user
configuration information. In particular, user configuration choices
which duplicate the defaults will be removed from the user's
configuration files, and if a user file becomes empty, it will be
deleted.
The configuration database maps options to values. Conceptually, the
database keys are tuples (config-type, section, item). As implemented,
there are separate dicts for default and user values. Each has
config-type keys 'main', 'extensions', 'highlight', and 'keys'. The
value for each key is a ConfigParser instance that maps section and item
to values. For 'main' and 'extenstons', user values override
default values. For 'highlight' and 'keys', user sections augment the
default sections (and must, therefore, have distinct names).
Throughout this module there is an emphasis on returning useable defaults
when a problem occurs in returning a requested configuration value back to
idle. This is to allow IDLE to continue to function in spite of errors in
the retrieval of config information. When a default is returned instead of
a requested config value, a message is printed to stderr to aid in
configuration problem notification and resolution.
"""
# TODOs added Oct 2014, tjr
from configparser import ConfigParser
import os
import sys
from tkinter.font import Font
import idlelib
class InvalidConfigType(Exception): pass
class InvalidConfigSet(Exception): pass
class InvalidFgBg(Exception): pass
class InvalidTheme(Exception): pass
class IdleConfParser(ConfigParser):
"""
A ConfigParser specialised for idle configuration file handling
"""
def __init__(self, cfgFile, cfgDefaults=None):
"""
cfgFile - string, fully specified configuration file name
"""
self.file = cfgFile # This is currently '' when testing.
ConfigParser.__init__(self, defaults=cfgDefaults, strict=False)
def Get(self, section, option, type=None, default=None, raw=False):
"""
Get an option value for given section/option or return default.
If type is specified, return as type.
"""
# TODO Use default as fallback, at least if not None
# Should also print Warning(file, section, option).
# Currently may raise ValueError
if not self.has_option(section, option):
return default
if type == 'bool':
return self.getboolean(section, option)
elif type == 'int':
return self.getint(section, option)
else:
return self.get(section, option, raw=raw)
def GetOptionList(self, section):
"Return a list of options for given section, else []."
if self.has_section(section):
return self.options(section)
else: #return a default value
return []
def Load(self):
"Load the configuration file from disk."
if self.file:
self.read(self.file)
class IdleUserConfParser(IdleConfParser):
"""
IdleConfigParser specialised for user configuration handling.
"""
def SetOption(self, section, option, value):
"""Return True if option is added or changed to value, else False.
Add section if required. False means option already had value.
"""
if self.has_option(section, option):
if self.get(section, option) == value:
return False
else:
self.set(section, option, value)
return True
else:
if not self.has_section(section):
self.add_section(section)
self.set(section, option, value)
return True
def RemoveOption(self, section, option):
"""Return True if option is removed from section, else False.
False if either section does not exist or did not have option.
"""
if self.has_section(section):
return self.remove_option(section, option)
return False
def AddSection(self, section):
"If section doesn't exist, add it."
if not self.has_section(section):
self.add_section(section)
def RemoveEmptySections(self):
"Remove any sections that have no options."
for section in self.sections():
if not self.GetOptionList(section):
self.remove_section(section)
def IsEmpty(self):
"Return True if no sections after removing empty sections."
self.RemoveEmptySections()
return not self.sections()
def RemoveFile(self):
"Remove user config file self.file from disk if it exists."
if os.path.exists(self.file):
os.remove(self.file)
def Save(self):
"""Update user configuration file.
If self not empty after removing empty sections, write the file
to disk. Otherwise, remove the file from disk if it exists.
"""
fname = self.file
if fname:
if not self.IsEmpty():
try:
cfgFile = open(fname, 'w')
except OSError:
os.unlink(fname)
cfgFile = open(fname, 'w')
with cfgFile:
self.write(cfgFile)
else:
self.RemoveFile()
class IdleConf:
"""Hold config parsers for all idle config files in singleton instance.
Default config files, self.defaultCfg --
for config_type in self.config_types:
(idle install dir)/config-{config-type}.def
User config files, self.userCfg --
for config_type in self.config_types:
(user home dir)/.idlerc/config-{config-type}.cfg
"""
def __init__(self, _utest=False):
self.config_types = ('main', 'highlight', 'keys', 'extensions')
self.defaultCfg = {}
self.userCfg = {}
self.cfg = {} # TODO use to select userCfg vs defaultCfg
if not _utest:
self.CreateConfigHandlers()
self.LoadCfgFiles()
def CreateConfigHandlers(self):
"Populate default and user config parser dictionaries."
#build idle install path
if __name__ != '__main__': # we were imported
idleDir = os.path.dirname(__file__)
else: # we were exec'ed (for testing only)
idleDir = os.path.abspath(sys.path[0])
self.userdir = userDir = self.GetUserCfgDir()
defCfgFiles = {}
usrCfgFiles = {}
# TODO eliminate these temporaries by combining loops
for cfgType in self.config_types: #build config file names
defCfgFiles[cfgType] = os.path.join(
idleDir, 'config-' + cfgType + '.def')
usrCfgFiles[cfgType] = os.path.join(
userDir, 'config-' + cfgType + '.cfg')
for cfgType in self.config_types: #create config parsers
self.defaultCfg[cfgType] = IdleConfParser(defCfgFiles[cfgType])
self.userCfg[cfgType] = IdleUserConfParser(usrCfgFiles[cfgType])
def GetUserCfgDir(self):
"""Return a filesystem directory for storing user config files.
Creates it if required.
"""
cfgDir = '.idlerc'
userDir = os.path.expanduser('~')
if userDir != '~': # expanduser() found user home dir
if not os.path.exists(userDir):
warn = ('\n Warning: os.path.expanduser("~") points to\n ' +
userDir + ',\n but the path does not exist.')
try:
print(warn, file=sys.stderr)
except OSError:
pass
userDir = '~'
if userDir == "~": # still no path to home!
# traditionally IDLE has defaulted to os.getcwd(), is this adequate?
userDir = os.getcwd()
userDir = os.path.join(userDir, cfgDir)
if not os.path.exists(userDir):
try:
os.mkdir(userDir)
except OSError:
warn = ('\n Warning: unable to create user config directory\n' +
userDir + '\n Check path and permissions.\n Exiting!\n')
if not idlelib.testing:
print(warn, file=sys.stderr)
raise SystemExit
# TODO continue without userDIr instead of exit
return userDir
def GetOption(self, configType, section, option, default=None, type=None,
warn_on_default=True, raw=False):
"""Return a value for configType section option, or default.
If type is not None, return a value of that type. Also pass raw
to the config parser. First try to return a valid value
(including type) from a user configuration. If that fails, try
the default configuration. If that fails, return default, with a
default of None.
Warn if either user or default configurations have an invalid value.
Warn if default is returned and warn_on_default is True.
"""
try:
if self.userCfg[configType].has_option(section, option):
return self.userCfg[configType].Get(section, option,
type=type, raw=raw)
except ValueError:
warning = ('\n Warning: config.py - IdleConf.GetOption -\n'
' invalid %r value for configuration option %r\n'
' from section %r: %r' %
(type, option, section,
self.userCfg[configType].Get(section, option, raw=raw)))
_warn(warning, configType, section, option)
try:
if self.defaultCfg[configType].has_option(section,option):
return self.defaultCfg[configType].Get(
section, option, type=type, raw=raw)
except ValueError:
pass
#returning default, print warning
if warn_on_default:
warning = ('\n Warning: config.py - IdleConf.GetOption -\n'
' problem retrieving configuration option %r\n'
' from section %r.\n'
' returning default value: %r' %
(option, section, default))
_warn(warning, configType, section, option)
return default
def SetOption(self, configType, section, option, value):
"""Set section option to value in user config file."""
self.userCfg[configType].SetOption(section, option, value)
def GetSectionList(self, configSet, configType):
"""Return sections for configSet configType configuration.
configSet must be either 'user' or 'default'
configType must be in self.config_types.
"""
if not (configType in self.config_types):
raise InvalidConfigType('Invalid configType specified')
if configSet == 'user':
cfgParser = self.userCfg[configType]
elif configSet == 'default':
cfgParser=self.defaultCfg[configType]
else:
raise InvalidConfigSet('Invalid configSet specified')
return cfgParser.sections()
def GetHighlight(self, theme, element, fgBg=None):
"""Return individual theme element highlight color(s).
fgBg - string ('fg' or 'bg') or None.
If None, return a dictionary containing fg and bg colors with
keys 'foreground' and 'background'. Otherwise, only return
fg or bg color, as specified. Colors are intended to be
appropriate for passing to Tkinter in, e.g., a tag_config call).
"""
if self.defaultCfg['highlight'].has_section(theme):
themeDict = self.GetThemeDict('default', theme)
else:
themeDict = self.GetThemeDict('user', theme)
fore = themeDict[element + '-foreground']
if element == 'cursor': # There is no config value for cursor bg
back = themeDict['normal-background']
else:
back = themeDict[element + '-background']
highlight = {"foreground": fore, "background": back}
if not fgBg: # Return dict of both colors
return highlight
else: # Return specified color only
if fgBg == 'fg':
return highlight["foreground"]
if fgBg == 'bg':
return highlight["background"]
else:
raise InvalidFgBg('Invalid fgBg specified')
def GetThemeDict(self, type, themeName):
"""Return {option:value} dict for elements in themeName.
type - string, 'default' or 'user' theme type
themeName - string, theme name
Values are loaded over ultimate fallback defaults to guarantee
that all theme elements are present in a newly created theme.
"""
if type == 'user':
cfgParser = self.userCfg['highlight']
elif type == 'default':
cfgParser = self.defaultCfg['highlight']
else:
raise InvalidTheme('Invalid theme type specified')
# Provide foreground and background colors for each theme
# element (other than cursor) even though some values are not
# yet used by idle, to allow for their use in the future.
# Default values are generally black and white.
# TODO copy theme from a class attribute.
theme ={'normal-foreground':'#000000',
'normal-background':'#ffffff',
'keyword-foreground':'#000000',
'keyword-background':'#ffffff',
'builtin-foreground':'#000000',
'builtin-background':'#ffffff',
'comment-foreground':'#000000',
'comment-background':'#ffffff',
'string-foreground':'#000000',
'string-background':'#ffffff',
'definition-foreground':'#000000',
'definition-background':'#ffffff',
'hilite-foreground':'#000000',
'hilite-background':'gray',
'break-foreground':'#ffffff',
'break-background':'#000000',
'hit-foreground':'#ffffff',
'hit-background':'#000000',
'error-foreground':'#ffffff',
'error-background':'#000000',
#cursor (only foreground can be set)
'cursor-foreground':'#000000',
#shell window
'stdout-foreground':'#000000',
'stdout-background':'#ffffff',
'stderr-foreground':'#000000',
'stderr-background':'#ffffff',
'console-foreground':'#000000',
'console-background':'#ffffff',
'context-foreground':'#000000',
'context-background':'#ffffff',
}
for element in theme:
if not cfgParser.has_option(themeName, element):
# Print warning that will return a default color
warning = ('\n Warning: config.IdleConf.GetThemeDict'
' -\n problem retrieving theme element %r'
'\n from theme %r.\n'
' returning default color: %r' %
(element, themeName, theme[element]))
_warn(warning, 'highlight', themeName, element)
theme[element] = cfgParser.Get(
themeName, element, default=theme[element])
return theme
def CurrentTheme(self):
"Return the name of the currently active text color theme."
return self.current_colors_and_keys('Theme')
def CurrentKeys(self):
"""Return the name of the currently active key set."""
return self.current_colors_and_keys('Keys')
def current_colors_and_keys(self, section):
"""Return the currently active name for Theme or Keys section.
idlelib.config-main.def ('default') includes these sections
[Theme]
default= 1
name= IDLE Classic
name2=
[Keys]
default= 1
name=
name2=
Item 'name2', is used for built-in ('default') themes and keys
added after 2015 Oct 1 and 2016 July 1. This kludge is needed
because setting 'name' to a builtin not defined in older IDLEs
to display multiple error messages or quit.
See https://bugs.python.org/issue25313.
When default = True, 'name2' takes precedence over 'name',
while older IDLEs will just use name. When default = False,
'name2' may still be set, but it is ignored.
"""
cfgname = 'highlight' if section == 'Theme' else 'keys'
default = self.GetOption('main', section, 'default',
type='bool', default=True)
name = ''
if default:
name = self.GetOption('main', section, 'name2', default='')
if not name:
name = self.GetOption('main', section, 'name', default='')
if name:
source = self.defaultCfg if default else self.userCfg
if source[cfgname].has_section(name):
return name
return "IDLE Classic" if section == 'Theme' else self.default_keys()
@staticmethod
def default_keys():
if sys.platform[:3] == 'win':
return 'IDLE Classic Windows'
elif sys.platform == 'darwin':
return 'IDLE Classic OSX'
else:
return 'IDLE Modern Unix'
def GetExtensions(self, active_only=True,
editor_only=False, shell_only=False):
"""Return extensions in default and user config-extensions files.
If active_only True, only return active (enabled) extensions
and optionally only editor or shell extensions.
If active_only False, return all extensions.
"""
extns = self.RemoveKeyBindNames(
self.GetSectionList('default', 'extensions'))
userExtns = self.RemoveKeyBindNames(
self.GetSectionList('user', 'extensions'))
for extn in userExtns:
if extn not in extns: #user has added own extension
extns.append(extn)
for extn in ('AutoComplete','CodeContext',
'FormatParagraph','ParenMatch'):
extns.remove(extn)
# specific exclusions because we are storing config for mainlined old
# extensions in config-extensions.def for backward compatibility
if active_only:
activeExtns = []
for extn in extns:
if self.GetOption('extensions', extn, 'enable', default=True,
type='bool'):
#the extension is enabled
if editor_only or shell_only: # TODO both True contradict
if editor_only:
option = "enable_editor"
else:
option = "enable_shell"
if self.GetOption('extensions', extn,option,
default=True, type='bool',
warn_on_default=False):
activeExtns.append(extn)
else:
activeExtns.append(extn)
return activeExtns
else:
return extns
def RemoveKeyBindNames(self, extnNameList):
"Return extnNameList with keybinding section names removed."
return [n for n in extnNameList if not n.endswith(('_bindings', '_cfgBindings'))]
def GetExtnNameForEvent(self, virtualEvent):
"""Return the name of the extension binding virtualEvent, or None.
virtualEvent - string, name of the virtual event to test for,
without the enclosing '<< >>'
"""
extName = None
vEvent = '<<' + virtualEvent + '>>'
for extn in self.GetExtensions(active_only=0):
for event in self.GetExtensionKeys(extn):
if event == vEvent:
extName = extn # TODO return here?
return extName
def GetExtensionKeys(self, extensionName):
"""Return dict: {configurable extensionName event : active keybinding}.
Events come from default config extension_cfgBindings section.
Keybindings come from GetCurrentKeySet() active key dict,
where previously used bindings are disabled.
"""
keysName = extensionName + '_cfgBindings'
activeKeys = self.GetCurrentKeySet()
extKeys = {}
if self.defaultCfg['extensions'].has_section(keysName):
eventNames = self.defaultCfg['extensions'].GetOptionList(keysName)
for eventName in eventNames:
event = '<<' + eventName + '>>'
binding = activeKeys[event]
extKeys[event] = binding
return extKeys
def __GetRawExtensionKeys(self,extensionName):
"""Return dict {configurable extensionName event : keybinding list}.
Events come from default config extension_cfgBindings section.
Keybindings list come from the splitting of GetOption, which
tries user config before default config.
"""
keysName = extensionName+'_cfgBindings'
extKeys = {}
if self.defaultCfg['extensions'].has_section(keysName):
eventNames = self.defaultCfg['extensions'].GetOptionList(keysName)
for eventName in eventNames:
binding = self.GetOption(
'extensions', keysName, eventName, default='').split()
event = '<<' + eventName + '>>'
extKeys[event] = binding
return extKeys
def GetExtensionBindings(self, extensionName):
"""Return dict {extensionName event : active or defined keybinding}.
Augment self.GetExtensionKeys(extensionName) with mapping of non-
configurable events (from default config) to GetOption splits,
as in self.__GetRawExtensionKeys.
"""
bindsName = extensionName + '_bindings'
extBinds = self.GetExtensionKeys(extensionName)
#add the non-configurable bindings
if self.defaultCfg['extensions'].has_section(bindsName):
eventNames = self.defaultCfg['extensions'].GetOptionList(bindsName)
for eventName in eventNames:
binding = self.GetOption(
'extensions', bindsName, eventName, default='').split()
event = '<<' + eventName + '>>'
extBinds[event] = binding
return extBinds
def GetKeyBinding(self, keySetName, eventStr):
"""Return the keybinding list for keySetName eventStr.
keySetName - name of key binding set (config-keys section).
eventStr - virtual event, including brackets, as in '<<event>>'.
"""
eventName = eventStr[2:-2] #trim off the angle brackets
binding = self.GetOption('keys', keySetName, eventName, default='',
warn_on_default=False).split()
return binding
def GetCurrentKeySet(self):
"Return CurrentKeys with 'darwin' modifications."
result = self.GetKeySet(self.CurrentKeys())
if sys.platform == "darwin":
# macOS (OS X) Tk variants do not support the "Alt"
# keyboard modifier. Replace it with "Option".
# TODO (Ned?): the "Option" modifier does not work properly
# for Cocoa Tk and XQuartz Tk so we should not use it
# in the default 'OSX' keyset.
for k, v in result.items():
v2 = [ x.replace('<Alt-', '<Option-') for x in v ]
if v != v2:
result[k] = v2
return result
def GetKeySet(self, keySetName):
"""Return event-key dict for keySetName core plus active extensions.
If a binding defined in an extension is already in use, the
extension binding is disabled by being set to ''
"""
keySet = self.GetCoreKeys(keySetName)
activeExtns = self.GetExtensions(active_only=1)
for extn in activeExtns:
extKeys = self.__GetRawExtensionKeys(extn)
if extKeys: #the extension defines keybindings
for event in extKeys:
if extKeys[event] in keySet.values():
#the binding is already in use
extKeys[event] = '' #disable this binding
keySet[event] = extKeys[event] #add binding
return keySet
def IsCoreBinding(self, virtualEvent):
"""Return True if the virtual event is one of the core idle key events.
virtualEvent - string, name of the virtual event to test for,
without the enclosing '<< >>'
"""
return ('<<'+virtualEvent+'>>') in self.GetCoreKeys()
# TODO make keyBindins a file or class attribute used for test above
# and copied in function below.
former_extension_events = { # Those with user-configurable keys.
'<<force-open-completions>>', '<<expand-word>>',
'<<force-open-calltip>>', '<<flash-paren>>', '<<format-paragraph>>',
'<<run-module>>', '<<check-module>>', '<<zoom-height>>'}
def GetCoreKeys(self, keySetName=None):
"""Return dict of core virtual-key keybindings for keySetName.
The default keySetName None corresponds to the keyBindings base
dict. If keySetName is not None, bindings from the config
file(s) are loaded _over_ these defaults, so if there is a
problem getting any core binding there will be an 'ultimate last
resort fallback' to the CUA-ish bindings defined here.
"""
keyBindings={
'<<copy>>': ['<Control-c>', '<Control-C>'],
'<<cut>>': ['<Control-x>', '<Control-X>'],
'<<paste>>': ['<Control-v>', '<Control-V>'],
'<<beginning-of-line>>': ['<Control-a>', '<Home>'],
'<<center-insert>>': ['<Control-l>'],
'<<close-all-windows>>': ['<Control-q>'],
'<<close-window>>': ['<Alt-F4>'],
'<<do-nothing>>': ['<Control-x>'],
'<<end-of-file>>': ['<Control-d>'],
'<<python-docs>>': ['<F1>'],
'<<python-context-help>>': ['<Shift-F1>'],
'<<history-next>>': ['<Alt-n>'],
'<<history-previous>>': ['<Alt-p>'],
'<<interrupt-execution>>': ['<Control-c>'],
'<<view-restart>>': ['<F6>'],
'<<restart-shell>>': ['<Control-F6>'],
'<<open-class-browser>>': ['<Alt-c>'],
'<<open-module>>': ['<Alt-m>'],
'<<open-new-window>>': ['<Control-n>'],
'<<open-window-from-file>>': ['<Control-o>'],
'<<plain-newline-and-indent>>': ['<Control-j>'],
'<<print-window>>': ['<Control-p>'],
'<<redo>>': ['<Control-y>'],
'<<remove-selection>>': ['<Escape>'],
'<<save-copy-of-window-as-file>>': ['<Alt-Shift-S>'],
'<<save-window-as-file>>': ['<Alt-s>'],
'<<save-window>>': ['<Control-s>'],
'<<select-all>>': ['<Alt-a>'],
'<<toggle-auto-coloring>>': ['<Control-slash>'],
'<<undo>>': ['<Control-z>'],
'<<find-again>>': ['<Control-g>', '<F3>'],
'<<find-in-files>>': ['<Alt-F3>'],
'<<find-selection>>': ['<Control-F3>'],
'<<find>>': ['<Control-f>'],
'<<replace>>': ['<Control-h>'],
'<<goto-line>>': ['<Alt-g>'],
'<<smart-backspace>>': ['<Key-BackSpace>'],
'<<newline-and-indent>>': ['<Key-Return>', '<Key-KP_Enter>'],
'<<smart-indent>>': ['<Key-Tab>'],
'<<indent-region>>': ['<Control-Key-bracketright>'],
'<<dedent-region>>': ['<Control-Key-bracketleft>'],
'<<comment-region>>': ['<Alt-Key-3>'],
'<<uncomment-region>>': ['<Alt-Key-4>'],
'<<tabify-region>>': ['<Alt-Key-5>'],
'<<untabify-region>>': ['<Alt-Key-6>'],
'<<toggle-tabs>>': ['<Alt-Key-t>'],
'<<change-indentwidth>>': ['<Alt-Key-u>'],
'<<del-word-left>>': ['<Control-Key-BackSpace>'],
'<<del-word-right>>': ['<Control-Key-Delete>'],
'<<force-open-completions>>': ['<Control-Key-space>'],
'<<expand-word>>': ['<Alt-Key-slash>'],
'<<force-open-calltip>>': ['<Control-Key-backslash>'],
'<<flash-paren>>': ['<Control-Key-0>'],
'<<format-paragraph>>': ['<Alt-Key-q>'],
'<<run-module>>': ['<Key-F5>'],
'<<check-module>>': ['<Alt-Key-x>'],
'<<zoom-height>>': ['<Alt-Key-2>'],
}
if keySetName:
if not (self.userCfg['keys'].has_section(keySetName) or
self.defaultCfg['keys'].has_section(keySetName)):
warning = (
'\n Warning: config.py - IdleConf.GetCoreKeys -\n'
' key set %r is not defined, using default bindings.' %
(keySetName,)
)
_warn(warning, 'keys', keySetName)
else:
for event in keyBindings:
binding = self.GetKeyBinding(keySetName, event)
if binding:
keyBindings[event] = binding
# Otherwise return default in keyBindings.
elif event not in self.former_extension_events:
warning = (
'\n Warning: config.py - IdleConf.GetCoreKeys -\n'
' problem retrieving key binding for event %r\n'
' from key set %r.\n'
' returning default value: %r' %
(event, keySetName, keyBindings[event])
)
_warn(warning, 'keys', keySetName, event)
return keyBindings
def GetExtraHelpSourceList(self, configSet):
"""Return list of extra help sources from a given configSet.
Valid configSets are 'user' or 'default'. Return a list of tuples of
the form (menu_item , path_to_help_file , option), or return the empty
list. 'option' is the sequence number of the help resource. 'option'
values determine the position of the menu items on the Help menu,
therefore the returned list must be sorted by 'option'.
"""
helpSources = []
if configSet == 'user':
cfgParser = self.userCfg['main']
elif configSet == 'default':
cfgParser = self.defaultCfg['main']
else:
raise InvalidConfigSet('Invalid configSet specified')
options=cfgParser.GetOptionList('HelpFiles')
for option in options:
value=cfgParser.Get('HelpFiles', option, default=';')
if value.find(';') == -1: #malformed config entry with no ';'
menuItem = '' #make these empty
helpPath = '' #so value won't be added to list
else: #config entry contains ';' as expected
value=value.split(';')
menuItem=value[0].strip()
helpPath=value[1].strip()
if menuItem and helpPath: #neither are empty strings
helpSources.append( (menuItem,helpPath,option) )
helpSources.sort(key=lambda x: x[2])
return helpSources
def GetAllExtraHelpSourcesList(self):
"""Return a list of the details of all additional help sources.
Tuples in the list are those of GetExtraHelpSourceList.
"""
allHelpSources = (self.GetExtraHelpSourceList('default') +
self.GetExtraHelpSourceList('user') )
return allHelpSources
def GetFont(self, root, configType, section):
"""Retrieve a font from configuration (font, font-size, font-bold)
Intercept the special value 'TkFixedFont' and substitute
the actual font, factoring in some tweaks if needed for
appearance sakes.
The 'root' parameter can normally be any valid Tkinter widget.
Return a tuple (family, size, weight) suitable for passing
to tkinter.Font
"""
family = self.GetOption(configType, section, 'font', default='courier')
size = self.GetOption(configType, section, 'font-size', type='int',
default='10')
bold = self.GetOption(configType, section, 'font-bold', default=0,
type='bool')
if (family == 'TkFixedFont'):
f = Font(name='TkFixedFont', exists=True, root=root)
actualFont = Font.actual(f)
family = actualFont['family']
size = actualFont['size']
if size <= 0:
size = 10 # if font in pixels, ignore actual size
bold = actualFont['weight'] == 'bold'
return (family, size, 'bold' if bold else 'normal')
def LoadCfgFiles(self):
"Load all configuration files."
for key in self.defaultCfg:
self.defaultCfg[key].Load()
self.userCfg[key].Load() #same keys
def SaveUserCfgFiles(self):
"Write all loaded user configuration files to disk."
for key in self.userCfg:
self.userCfg[key].Save()
idleConf = IdleConf()
_warned = set()
def _warn(msg, *key):
key = (msg,) + key
if key not in _warned:
try:
print(msg, file=sys.stderr)
except OSError:
pass
_warned.add(key)
class ConfigChanges(dict):
"""Manage a user's proposed configuration option changes.
Names used across multiple methods:
page -- one of the 4 top-level dicts representing a
.idlerc/config-x.cfg file.
config_type -- name of a page.
section -- a section within a page/file.
option -- name of an option within a section.
value -- value for the option.
Methods
add_option: Add option and value to changes.
save_option: Save option and value to config parser.
save_all: Save all the changes to the config parser and file.
delete_section: If section exists,
delete from changes, userCfg, and file.
clear: Clear all changes by clearing each page.
"""
def __init__(self):
"Create a page for each configuration file"
self.pages = [] # List of unhashable dicts.
for config_type in idleConf.config_types:
self[config_type] = {}
self.pages.append(self[config_type])
def add_option(self, config_type, section, item, value):
"Add item/value pair for config_type and section."
page = self[config_type]
value = str(value) # Make sure we use a string.
if section not in page:
page[section] = {}
page[section][item] = value
@staticmethod
def save_option(config_type, section, item, value):
"""Return True if the configuration value was added or changed.
Helper for save_all.
"""
if idleConf.defaultCfg[config_type].has_option(section, item):
if idleConf.defaultCfg[config_type].Get(section, item) == value:
# The setting equals a default setting, remove it from user cfg.
return idleConf.userCfg[config_type].RemoveOption(section, item)
# If we got here, set the option.
return idleConf.userCfg[config_type].SetOption(section, item, value)
def save_all(self):
"""Save configuration changes to the user config file.
Clear self in preparation for additional changes.
Return changed for testing.
"""
idleConf.userCfg['main'].Save()
changed = False
for config_type in self:
cfg_type_changed = False
page = self[config_type]
for section in page:
if section == 'HelpFiles': # Remove it for replacement.
idleConf.userCfg['main'].remove_section('HelpFiles')
cfg_type_changed = True
for item, value in page[section].items():
if self.save_option(config_type, section, item, value):
cfg_type_changed = True
if cfg_type_changed:
idleConf.userCfg[config_type].Save()
changed = True
for config_type in ['keys', 'highlight']:
# Save these even if unchanged!
idleConf.userCfg[config_type].Save()
self.clear()
# ConfigDialog caller must add the following call
# self.save_all_changed_extensions() # Uses a different mechanism.
return changed
def delete_section(self, config_type, section):
"""Delete a section from self, userCfg, and file.
Used to delete custom themes and keysets.
"""
if section in self[config_type]:
del self[config_type][section]
configpage = idleConf.userCfg[config_type]
configpage.remove_section(section)
configpage.Save()
def clear(self):
"""Clear all 4 pages.
Called in save_all after saving to idleConf.
XXX Mark window *title* when there are changes; unmark here.
"""
for page in self.pages:
page.clear()
# TODO Revise test output, write expanded unittest
def _dump(): # htest # (not really, but ignore in coverage)
from zlib import crc32
line, crc = 0, 0
def sprint(obj):
global line, crc
txt = str(obj)
line += 1
crc = crc32(txt.encode(encoding='utf-8'), crc)
print(txt)
#print('***', line, crc, '***') # Uncomment for diagnosis.
def dumpCfg(cfg):
print('\n', cfg, '\n') # Cfg has variable '0xnnnnnnnn' address.
for key in sorted(cfg.keys()):
sections = cfg[key].sections()
sprint(key)
sprint(sections)
for section in sections:
options = cfg[key].options(section)
sprint(section)
sprint(options)
for option in options:
sprint(option + ' = ' + cfg[key].Get(section, option))
dumpCfg(idleConf.defaultCfg)
dumpCfg(idleConf.userCfg)
print('\nlines = ', line, ', crc = ', crc, sep='')
if __name__ == '__main__':
from unittest import main
main('idlelib.idle_test.test_config', verbosity=2, exit=False)
# Run revised _dump() as htest?
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