def validate(self, default, **optional):
if not_unicode_or_ascii(default) and not IIcon.providedBy(default):
raise GrokImportError(
"The '%s' directive can only be called with "
"unicode or ASCII." % self.name)
for key, value in optional.items():
if not_unicode_or_ascii(value) and not IIcon.providedBy(default):
raise GrokImportError(
"The '%s' directive can only be called with "
"unicode or ASCII." % self.name)
def registerIcon(config, extension_name, cls, icon):
"""Register icon for a class.
"""
if icon is None:
return
if not IIcon.providedBy(icon):
extension = extensionRegistry.get_extension(extension_name)
fs_path = os.path.join(extension.module_directory, icon)
name = ''.join((
'icon-',
cls.meta_type.strip().replace(' ', '-'),
os.path.splitext(icon)[1] or '.png'))
factory = IconResourceFactory(name, fs_path)
config.action(
discriminator = ('resource', name, IHTTPRequest, Interface),
callable = provideAdapter,
args = (factory, (IHTTPRequest,), Interface, name))
icon = Icon("++resource++" + name)
icon_registry.register(('meta_type', cls.meta_type), icon)
cls.icon = icon.icon
