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from __future__ import unicode_literals
from prompt_toolkit.filters import CLIFilter, Always
__all__ = (
'create_handle_decorator',
)
def create_handle_decorator(registry, filter=Always()):
"""
Create a key handle decorator, which is compatible with `Registry.handle`,
but will chain the given filter to every key binding.
:param filter: `CLIFilter`
"""
assert isinstance(filter, CLIFilter)
def handle(*keys, **kw):
# Chain the given filter to the filter of this specific binding.
if 'filter' in kw:
kw['filter'] = kw['filter'] & filter
else:
kw['filter'] = filter
return registry.add_binding(*keys, **kw)
return handle
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