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36 lines
1.2 KiB
Python
36 lines
1.2 KiB
Python
# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this file,
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# You can obtain one at http://mozilla.org/MPL/2.0/.
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from functools import wraps
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from importlib import import_module
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class use_class_as_property(object):
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"""
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This decorator imports a library module and sets an instance
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of the associated class as an attribute on the Puppeteer
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object and returns it.
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Note: return value of the wrapped function is ignored.
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"""
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def __init__(self, lib):
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self.lib = lib
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self.mod_name, self.cls_name = self.lib.rsplit('.', 1)
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def __call__(self, func):
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@property
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@wraps(func)
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def _(cls, *args, **kwargs):
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tag = '_{}_{}'.format(self.mod_name, self.cls_name)
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prop = getattr(cls, tag, None)
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if not prop:
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module = import_module('.{}'.format(self.mod_name),
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'firefox_puppeteer')
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prop = getattr(module, self.cls_name)(cls.get_marionette)
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setattr(cls, tag, prop)
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func(cls, *args, **kwargs)
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return prop
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return _
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