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92 lines
3.1 KiB
Python
92 lines
3.1 KiB
Python
#!/usr/bin/python3
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# -*- coding: utf-8 -*-
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# input-remapper - GUI for device specific keyboard mappings
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# Copyright (C) 2022 sezanzeb <proxima@sezanzeb.de>
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#
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# This file is part of input-remapper.
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#
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# input-remapper is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# input-remapper is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with input-remapper. If not, see <https://www.gnu.org/licenses/>.
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from typing import List, Dict
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import evdev
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from evdev.ecodes import EV_ABS, EV_REL
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from inputremapper.event_combination import EventCombination
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from inputremapper.injection.mapping_handlers.mapping_handler import (
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MappingHandler,
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InputEventHandler,
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HandlerEnums,
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)
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from inputremapper.input_event import InputEvent
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class HierarchyHandler(MappingHandler):
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"""Handler consisting of an ordered list of MappingHandler
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only the first handler which successfully handles the event will execute it,
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all other handlers will be notified, but suppressed
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"""
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_input_event: InputEvent
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def __init__(self, handlers: List[MappingHandler], event: InputEvent) -> None:
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self.handlers = handlers
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self._input_event = event
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combination = EventCombination(event)
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# use the mapping from the first child TODO: find a better solution
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mapping = handlers[0].mapping
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super().__init__(combination, mapping)
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def __str__(self):
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return f"HierarchyHandler for {self._input_event} <{id(self)}>:"
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def __repr__(self):
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return self.__str__()
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@property
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def child(self): # used for logging
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return self.handlers
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def notify(
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self,
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event: InputEvent,
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source: evdev.InputDevice = None,
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forward: evdev.UInput = None,
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supress: bool = False,
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) -> bool:
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if event.type_and_code != self._input_event.type_and_code:
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return False
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success = False
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for handler in self.handlers:
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if not success:
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success = handler.notify(event, source, forward)
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else:
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handler.notify(event, source, forward, supress=True)
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return success
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def reset(self) -> None:
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for sub_handler in self.handlers:
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sub_handler.reset()
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def wrap_with(self) -> Dict[EventCombination, HandlerEnums]:
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if self._input_event.type == EV_ABS and self._input_event.value != 0:
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return {EventCombination(self._input_event): HandlerEnums.abs2btn}
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if self._input_event.type == EV_REL and self._input_event.value != 0:
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return {EventCombination(self._input_event): HandlerEnums.rel2btn}
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return {}
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def set_sub_handler(self, handler: InputEventHandler) -> None:
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assert False
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