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"""Bridge for connecting a UI instance to nvim.""" |
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import sys |
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from threading import Semaphore, Thread |
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from traceback import format_exc |
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class UIBridge(object): |
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"""UIBridge class. Connects a Nvim instance to a UI class.""" |
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def connect(self, nvim, ui, profile=None, notify=False): |
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"""Connect nvim and the ui. |
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This will start loops for handling the UI and nvim events while |
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also synchronizing both. |
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""" |
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self._notify = notify |
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self._error = None |
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self._nvim = nvim |
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self._ui = ui |
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self._profile = profile |
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self._sem = Semaphore(0) |
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t = Thread(target=self._nvim_event_loop) |
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t.daemon = True |
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t.start() |
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self._ui_event_loop() |
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if self._error: |
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print(self._error) |
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if self._profile: |
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print(self._profile) |
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def exit(self): |
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"""Disconnect by exiting nvim.""" |
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self.detach() |
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self._call(self._nvim.quit) |
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def input(self, input_str): |
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"""Send input to nvim.""" |
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self._call(self._nvim.input, input_str) |
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def resize(self, columns, rows): |
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"""Send a resize request to nvim.""" |
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self._call(self._nvim.ui_try_resize, columns, rows) |
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def attach(self, columns, rows, rgb): |
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"""Attach the UI to nvim.""" |
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self._call(self._nvim.ui_attach, columns, rows, rgb) |
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def detach(self): |
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"""Detach the UI from nvim.""" |
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self._call(self._nvim.ui_detach) |
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def _call(self, fn, *args): |
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self._nvim.async_call(fn, *args) |
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def _ui_event_loop(self): |
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self._sem.acquire() |
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if self._profile: |
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import StringIO |
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import cProfile |
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import pstats |
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pr = cProfile.Profile() |
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pr.enable() |
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self._ui.start(self) |
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if self._profile: |
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pr.disable() |
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s = StringIO.StringIO() |
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ps = pstats.Stats(pr, stream=s) |
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ps.strip_dirs().sort_stats(self._profile).print_stats(30) |
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self._profile = s.getvalue() |
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def _nvim_event_loop(self): |
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def on_setup(): |
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self._sem.release() |
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def on_request(method, args): |
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raise Exception('Not implemented') |
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def on_notification(method, updates): |
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def apply_updates(): |
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if self._notify: |
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sys.stdout.write('attached\n') |
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sys.stdout.flush() |
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self._notify = False |
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try: |
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for update in updates: |
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# import sys |
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# l = [','.join([str(a) for a in args]) |
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# for args in update[1:]] |
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# print >> sys.stderr, update[0], ' '.join(l) |
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try: |
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handler = getattr(self._ui, '_nvim_' + update[0]) |
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except AttributeError: |
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pass |
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else: |
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for args in update[1:]: |
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handler(*args) |
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except: |
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self._error = format_exc() |
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self._call(self._nvim.quit) |
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if method == 'redraw': |
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self._ui.schedule_screen_update(apply_updates) |
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self._nvim.run_loop(on_request, on_notification, on_setup) |
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self._ui.quit() |
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timeyyy /
pytknvim
