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106 lines
4.1 KiB
106 lines
4.1 KiB
# GUI Application automation and testing library
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# Copyright (C) 2006-2018 Mark Mc Mahon and Contributors
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# https://github.com/pywinauto/pywinauto/graphs/contributors
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# http://pywinauto.readthedocs.io/en/latest/credits.html
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice, this
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# list of conditions and the following disclaimer.
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#
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# * Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# * Neither the name of pywinauto nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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"""Back-end components storage (links to platform-specific things)"""
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from .element_info import ElementInfo
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from .base_wrapper import BaseWrapper
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class BackEnd(object):
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"""Minimal back-end description (name & 2 required base classes)"""
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def __init__(self, name, element_info_class, generic_wrapper_class):
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"""Init back-end description"""
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self.name = name
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if not issubclass(element_info_class, ElementInfo):
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raise TypeError('element_info_class should be a class derived from ElementInfo')
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if not issubclass(generic_wrapper_class, BaseWrapper):
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raise TypeError('element_info_class should be a class derived from BaseWrapper')
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self.element_info_class = element_info_class
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self.generic_wrapper_class = generic_wrapper_class
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class BackendsRegistry(object):
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"""Registry pattern class for the list of available back-ends"""
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def __init__(self):
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"""Init back-ends list (it doesn't aware of concrete back-ends yet)"""
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self.backends = {}
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self.active_backend = None
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@property
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def name(self):
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"""Name of the active backend"""
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return self.active_backend.name
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@property
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def element_class(self):
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"""Return :py:class:`.element_info.ElementInfo`'s subclass of the active backend"""
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return self.active_backend.element_info_class
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@property
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def wrapper_class(self):
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"""BaseWrapper's subclass of the active backend"""
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return self.active_backend.generic_wrapper_class
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registry = BackendsRegistry()
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def name():
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"""Return name of the active backend"""
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return registry.name
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def element_class():
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"""Return :py:class:`.element_info.ElementInfo`'s subclass of the active backend"""
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return registry.element_class
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def wrapper_class():
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"""Return BaseWrapper's subclass of the active backend"""
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return registry.wrapper_class
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def activate(name):
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"""
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Set active backend by name
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Possible values of **name** are "win32", "uia" or
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other name registered by the :py:func:`register` function.
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"""
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if name not in registry.backends:
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raise ValueError('Back-end "{backend}" is not registered!'.format(backend=name))
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registry.active_backend = registry.backends[name]
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def register(name, element_info_class, generic_wrapper_class):
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"""Register a new backend"""
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registry.backends[name] = BackEnd(name, element_info_class, generic_wrapper_class)
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