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Add support for ordering handlers by referencing before and after

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This commit is contained in:
Ben 2019-06-21 01:41:14 +01:00
parent 9bb32d94d2
commit 1a5cf4868c
1 changed files with 12 additions and 1 deletions
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13
houdini/handlers/__init__.py
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@ -54,13 +54,16 @@ class Priority(enum.Enum):
class _Listener(_ArgumentDeserializer):
__slots__ = ['priority', 'packet', 'overrides']
__slots__ = ['priority', 'packet', 'overrides', 'before', 'after']
def __init__(self, packet, callback, **kwargs):
super().__init__(packet.id, callback, **kwargs)
self.packet = packet
self.priority = kwargs.get('priority', Priority.Low)
self.before = kwargs.get('before')
self.after = kwargs.get('after')
self.overrides = kwargs.get('overrides', [])
if type(self.overrides) is not list:
@ -146,6 +149,14 @@ class _ListenerManager(_AbstractManager):
self[listener_object.packet].append(listener_object)
for listener_name, listener_object in listener_objects:
if listener_object.before is not None:
index_of_before = self[listener_object.packet].index(listener_object.before)
old_index = self[listener_object.packet].index(listener_object)
self[listener_object.packet].insert(index_of_before, self[listener_object.packet].pop(old_index))
if listener_object.after is not None:
index_of_after = self[listener_object.packet].index(listener_object.after)
old_index = self[listener_object.packet].index(listener_object)
self[listener_object.packet].insert(index_of_after + 1, self[listener_object.packet].pop(old_index))
for override in listener_object.overrides:
self[override.packet].remove(override)