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# -*- coding: utf-8 -*-
# input-remapper - GUI for device specific keyboard mappings
# Copyright (C) 2025 sezanzeb <b8x45ygc9@mozmail.com>
#
# This file is part of input-remapper.
#
# input-remapper is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# input-remapper is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with input-remapper. If not, see <https://www.gnu.org/licenses/>.
from typing import List, Dict
import evdev
from evdev.ecodes import EV_ABS, EV_REL
from inputremapper.configs.input_config import InputCombination, InputConfig
from inputremapper.injection.global_uinputs import GlobalUInputs
from inputremapper.injection.mapping_handlers.mapping_handler import (
MappingHandler,
InputEventHandler,
HandlerEnums,
)
from inputremapper.input_event import InputEvent
class HierarchyHandler(MappingHandler):
"""Handler consisting of an ordered list of MappingHandler
only the first handler which successfully handles the event will execute it,
all other handlers will be notified, but suppressed
"""
_input_config: InputConfig
def __init__(
self,
handlers: List[MappingHandler],
input_config: InputConfig,
global_uinputs: GlobalUInputs,
) -> None:
self.handlers = handlers
self._input_config = input_config
combination = InputCombination([input_config])
# use the mapping from the first child TODO: find a better solution
mapping = handlers[0].mapping
super().__init__(combination, mapping, global_uinputs)
def __str__(self):
return f"HierarchyHandler for {self._input_config}"
def __repr__(self):
return f"<{str(self)} at {hex(id(self))}>"
@property
def child(self): # used for logging
return self.handlers
def notify(
self,
event: InputEvent,
source: evdev.InputDevice = None,
suppress: bool = False,
) -> bool:
if event.input_match_hash != self._input_config.input_match_hash:
return False
handled = False
for handler in self.handlers:
if handled:
# To allow an arbitrary number of output axes to be activated at the
# same time, we don't suppress them.
handler.notify(
event,
source,
suppress=not handler.mapping.input_combination.defines_analog_input,
)
continue
handled = handler.notify(event, source)
return handled
def reset(self) -> None:
for sub_handler in self.handlers:
sub_handler.reset()
def wrap_with(self) -> Dict[InputCombination, HandlerEnums]:
if (
self._input_config.type == EV_ABS
and not self._input_config.defines_analog_input
):
return {InputCombination([self._input_config]): HandlerEnums.abs2btn}
if (
self._input_config.type == EV_REL
and not self._input_config.defines_analog_input
):
return {InputCombination([self._input_config]): HandlerEnums.rel2btn}
return {}
def set_sub_handler(self, handler: InputEventHandler) -> None:
assert False
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