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@ -30,19 +30,11 @@ from keymapper.logger import logger
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from keymapper.paths import get_config_path
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from keymapper.paths import get_config_path
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def update_reverse_mapping(func):
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def keep_reverse_mapping_intact(func):
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"""Generate a reverse mapping to optimize reverse lookups.
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"""Decorator for Mapping.update_reverse_mapping."""
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If _mapping contains `20: "a, A"` (the xkb syntax for modified keys),
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reverse mapping will contain `"a": 20, "A": 20`.
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"""
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def wrapper(self, *args, **kwargs):
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def wrapper(self, *args, **kwargs):
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func(self, *args, **kwargs)
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func(self, *args, **kwargs)
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self.update_reverse_mapping()
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self._reverse_mapping = {}
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for key, value in self._mapping.items():
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for character in value.split(','):
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self._reverse_mapping[character.strip()] = key
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return wrapper
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return wrapper
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@ -71,7 +63,18 @@ class Mapping:
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def __len__(self):
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def __len__(self):
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return len(self._mapping)
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return len(self._mapping)
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@update_reverse_mapping
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def update_reverse_mapping(self):
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"""Generate a reverse mapping to optimize reverse lookups.
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If _mapping contains `20: "a, A"` (the xkb syntax for modified keys),
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reverse mapping will contain `"a": 20, "A": 20`.
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"""
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self._reverse_mapping = {}
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for key, value in self._mapping.items():
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for character in value.split(','):
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self._reverse_mapping[character.strip()] = key
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@keep_reverse_mapping_intact
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def change(self, new_keycode, character, previous_keycode=None):
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def change(self, new_keycode, character, previous_keycode=None):
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"""Replace the mapping of a keycode with a different one.
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"""Replace the mapping of a keycode with a different one.
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@ -110,7 +113,7 @@ class Mapping:
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return False
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return False
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@update_reverse_mapping
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@keep_reverse_mapping_intact
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def clear(self, keycode):
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def clear(self, keycode):
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"""Remove a keycode from the mapping.
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"""Remove a keycode from the mapping.
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@ -122,13 +125,13 @@ class Mapping:
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del self._mapping[keycode]
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del self._mapping[keycode]
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self.changed = True
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self.changed = True
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@update_reverse_mapping
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@keep_reverse_mapping_intact
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def empty(self):
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def empty(self):
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"""Remove all mappings."""
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"""Remove all mappings."""
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self._mapping = {}
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self._mapping = {}
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self.changed = True
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self.changed = True
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@update_reverse_mapping
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@keep_reverse_mapping_intact
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def load(self, device, preset):
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def load(self, device, preset):
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"""Load a dumped JSON from home to overwrite the mappings."""
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"""Load a dumped JSON from home to overwrite the mappings."""
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path = get_config_path(device, preset)
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path = get_config_path(device, preset)
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