B 't\O @sbddlmZddlmZmZddlmZdddgZeZd ddZ ed dZ Gd dde Z d S) )unicode_literals) TaskLocalTaskLocalNotSetError)contextmanagerget_appset_appNoRunningApplicationErrorFcCsNy t}Wn8tk rD|r&tn|r.dSddlm}|SYnX|SdS)an Get the current active (running) Application. An :class:`.Application` is active during the :meth:`.Application.run_async` call. We assume that there can only be one :class:`.Application` active at the same time. There is only one terminal window, with only one stdin and stdout. This makes the code significantly easier than passing around the :class:`.Application` everywhere. If no :class:`.Application` is running, then return by default a :class:`.DummyApplication`. For practical reasons, we prefer to not raise an exception. This way, we don't have to check all over the place whether an actual `Application` was returned. (For applications like pymux where we can have more than one `Application`, we'll use a work-around to handle that.) :param raise_exception: When `True`, raise :class:`.NoRunningApplicationError` instead of returning a :class:`.DummyApplication` if no application is running. :param return_none: When `True`, return `None` instead of returning a :class:`.DummyApplication` if no application is running. N)DummyApplication) _current_appgetrrZdummyr )Zraise_exception return_nonevaluer rAlib/python3.7/site-packages/prompt_toolkit/application/current.pyrs   c cs`ddlm}|dks"t||s"ttdd}t|z dVWd|rRt|ntXdS)z Context manager that sets the given :class:`.Application` active. (Usually, not needed to call outside of prompt_toolkit.) r ) ApplicationNT)r )Z applicationr isinstanceAssertionErrorrr setdelete)ZapprZpreviousrrrr7s     c@seZdZdZdS)rz+ There is no active application right now. N)__name__ __module__ __qualname____doc__rrrrrMsN)FF) Z __future__rZ prompt_toolkit.eventloop.contextrr contextlibr__all__r rr Exceptionrrrrrs   (