refactor: tidy codes

Signed-off-by: Jack Cherng <[email protected]>

plugin/view_manager.py

@@ -45,7 +45,7 @@ def calcualte_level_regions(
 
 
 class ViewManager:
- __instances: dict[weakref.ref[sublime.View], ViewManager] = {}
+ __instances: weakref.WeakKeyDictionary[sublime.View, ViewManager] = weakref.WeakKeyDictionary()
 
  def __init__(self, view: sublime.View, *, _from_init: bool = True) -> None:
  if _from_init:
@@ -56,11 +56,9 @@ def __init__(self, view: sublime.View, *, _from_init: bool = True) -> None:
 
  @classmethod
  def get_instance(cls, view: sublime.View) -> ViewManager:
- view_proxy = weakref.proxy(view)
- view_ref = weakref.ref(view)
- if not cls.__instances.get(view_ref):
- cls.__instances[view_ref] = cls(view_proxy, _from_init=False)
- return cls.__instances[view_ref]
+ if view not in cls.__instances:
+ cls.__instances[view] = cls(view, _from_init=False)
+ return cls.__instances[view]
 
  def clear_view(self) -> None:
  for level in range(self.max_level + 1):