VdZddlmZddlZddlZddlmZddlmZdZ Gdd e Z y) a5 Similar to `PyOS_InputHook` of the Python API. Some eventloops can have an inputhook to allow easy integration with other event loops. When the eventloop of prompt-toolkit is idle, it can call such a hook. This hook can call another eventloop that runs for a short while, for instance to keep a graphical user interface responsive. It's the responsibility of this hook to exit when there is input ready. There are two ways to detect when input is ready: - Call the `input_is_ready` method periodically. Quit when this returns `True`. - Add the `fileno` as a watch to the external eventloop. Quit when file descriptor becomes readable. (But don't read from it.) Note that this is not the same as checking for `sys.stdin.fileno()`. The eventloop of prompt-toolkit allows thread-based executors, for example for asynchronous autocompletion. When the completion for instance is ready, we also want prompt-toolkit to gain control again in order to display that. An alternative to using input hooks, is to create a custom `EventLoop` class that controls everything. )unicode_literalsN) is_windows) select_fds)InputHookContextc.eZdZdZdZdZdZdZdZy)rz0 Given as a parameter to the inputhook. c|t|sJ||_d|_tj\|_|_y)N)callable inputhook_input_is_readyospipe_r_w)selfr s 5lib/third_party/prompt_toolkit/eventloop/inputhook.py__init__zInputHookContext.__init__(s3 """"#779c&|jdS)z6 Return True when the input is ready. Fwait)r rs rinput_is_readyzInputHookContext.input_is_ready0s###//rc|jS)z\ File descriptor that will become ready when the event loop needs to go on. )rrs rfilenozInputHookContext.fileno6s wwrcL_fd}tj|jj  t st jgdtjjdd_y#t$r Yd_ywxYw)zM Call the inputhook. (Called by a prompt-toolkit eventloop.) cXdtjjdy)NTrx)r writer)input_is_ready_funcrsrthreadz/InputHookContext.call_inputhook..threadCs T * HHTWWd #r)targetN)timeouti) r threadingThreadstartr rrrr readOSError)rr r!s`` rcall_inputhookzInputHookContext.call_inputhook<s 3 $ '--/ t <DGG9d3 GGDGGT " $   #  sAB B#"B#c|jr>tj|jtj|jdx|_|_y)z% Clean up resources. N)rr closerrs rr+zInputHookContext.closecs9 77 HHTWW  HHTWW   $'rN) __name__ __module__ __qualname____doc__rrrr)r+rrrr$s!%0  %$N!rr) r/ __future__rr r$prompt_toolkit.utilsrselectr__all__objectrr0rrr6s00( +  G!vG!r