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import os
from urwid import AttrSpec, AttrSpecError
from utils import read_config
from errors import ConfigError
DEFAULTSPATH = os.path.join(os.path.dirname(__file__), '..', 'defaults')
class Theme(object):
"""Colour theme"""
def __init__(self, path):
"""
:param path: path to theme file
:type path: str
"""
self._spec = os.path.join(DEFAULTSPATH, 'theme.spec')
self._config = read_config(path, self._spec)
self.attributes = self._parse_attributes(self._config)
def _parse_attributes(self, c):
"""
parse a (previously validated) valid theme file
into urwid AttrSpec attributes for internal use.
:param c: config object for theme file
:type c: `configobj.ConfigObj`
:raises: `ConfigError`
"""
attributes = {}
for sec in c.sections:
try:
colours = int(sec)
except ValueError:
err_msg = 'section name %s is not a valid colour mode'
raise ConfigError(err_msg % sec)
attributes[colours] = {}
for mode in c[sec].sections:
attributes[colours][mode] = {}
for themable in c[sec][mode].sections:
block = c[sec][mode][themable]
fg = block['fg']
if colours == 1:
bg = 'default'
else:
bg = block['bg']
if colours == 256:
fg = fg or c['16'][mode][themable][fg]
bg = bg or c['16'][mode][themable][bg]
try:
att = AttrSpec(fg, bg, colours)
except AttrSpecError, e:
raise ConfigError(e)
attributes[colours][mode][themable] = att
return attributes
def get_attribute(self, mode, name, colourmode):
"""
returns requested attribute
:param mode: ui-mode (e.g. `search`,`thread`...)
:type mode: str
:param name: identifier of the atttribute
:type name: str
:param colourmode: colour mode; in [1, 16, 256]
:type colourmode: int
"""
return self.attributes[colourmode][mode][name]
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