Merge pull request #1106 from pypeclub/bugfix/2_0_1074-nuke-loader-co…

…ntext

Reset loader's asset selection on context change

pype/hosts/maya/__init__.py

@@ -45,7 +45,7 @@ def install():
  avalon.before("save", on_before_save)
 
  log.info("Overriding existing event 'taskChanged'")
- override_event("taskChanged", on_task_changed)
+ override_task_change_event()
 
  log.info("Setting default family states for loader..")
  avalon.data["familiesStateToggled"] = ["imagesequence"]
@@ -59,22 +59,19 @@ def uninstall():
  menu.uninstall()
 
 
-def override_event(event, callback):
- """
- Override existing event callback
- Args:
- event (str): name of the event
- callback (function): callback to be triggered
-
- Returns:
- None
-
- """
+def override_task_change_event():
+ """Override taskChanged event callback in avalon's maya implementation."""
 
- ref = weakref.WeakSet()
- ref.add(callback)
+ event_name = "taskChanged"
+ callbacks = pipeline._registered_event_handlers.get(event_name)
+ if callbacks:
+ # Remove callback from `avalon.maya.pipeline`
+ from avalon.maya.pipeline import _on_task_changed
 
- pipeline._registered_event_handlers[event] = ref
+ if _on_task_changed in callbacks:
+ callbacks.remove(_on_task_changed)
+ # Register pype's callback
+ avalon.on(event_name, on_task_changed)
 
 
 def on_init(_):