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changed events

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This commit is contained in:
John Lancaster
2026-02-22 18:19:48 -06:00
parent 62204abdd0
commit 07bdbe0b46
4 changed files with 12 additions and 11 deletions
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5
src/hooked_containers/container.py
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@@ -16,6 +16,7 @@ class HookFunction(Protocol):
class HookedContainer(ABC, Sized, Iterable[T], Container[T]): class HookedContainer(ABC, Sized, Iterable[T], Container[T]):
_path: MutableSequence[int] _path: MutableSequence[int]
_root: MutableMapping[T] | MutableSequence[T] | None = None
hook: HookFunction hook: HookFunction
def __repr__(self): def __repr__(self):
@@ -36,12 +37,12 @@ class HookedContainer(ABC, Sized, Iterable[T], Container[T]):
def __setitem__(self, s, value): def __setitem__(self, s, value):
self._data[s] = value self._data[s] = value
if self.hook: if self.hook:
self.hook(e.SetItemEvent(index=s, item=value, path=self._path)) self.hook(e.SetItemEvent(self.new_path(s), value))
def __delitem__(self, s): def __delitem__(self, s):
item = self._data.pop(s) item = self._data.pop(s)
if self.hook: if self.hook:
self.hook(e.RemoveItemEvent(index=s, item=item, path=self._path)) self.hook(e.RemoveItemEvent(self.new_path(s), item))
@abstractmethod @abstractmethod
def insert(self, index, value): ... def insert(self, index, value): ...

3
src/hooked_containers/events.py
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@@ -7,9 +7,8 @@ T = TypeVar("T")
@dataclass(frozen=True) @dataclass(frozen=True)
class ChangeEvent(Generic[T]): class ChangeEvent(Generic[T]):
index: int path: MutableSequence[int]
item: T item: T
path: MutableSequence[int] | None = None
@dataclass(frozen=True) @dataclass(frozen=True)

9
src/hooked_containers/mapping.py
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@@ -35,13 +35,14 @@ class HookedMapping(HookedContainer[T], MutableMapping[T, MutableNesting[T]]):
def insert(self, key: T, value: MutableNesting[T]) -> None: def insert(self, key: T, value: MutableNesting[T]) -> None:
self._data[key] = value self._data[key] = value
if self.hook: if self.hook:
self.hook(e.AddItemEvent(index=key, item=value, path=self.new_path(key))) self.hook(e.AddItemEvent(value, path=self.new_path(key)))
# HookedContainer methods # HookedContainer methods
def __getitem__(self, key: T) -> MutableNesting[T]: def __getitem__(self, key: T) -> MutableNesting[T]:
if key not in self._data: if key not in self._data:
self.insert(key, {}) self.insert(key, {})
return HookedMapping(self._data[key], hook=self.hook, path=self.new_path(key))
value = self._data[key] value = self._data[key]
match value: match value:
case HookedMapping(_data=seq): case HookedMapping(_data=seq):
@@ -54,13 +55,13 @@ class HookedMapping(HookedContainer[T], MutableMapping[T, MutableNesting[T]]):
def __setitem__(self, key: T, value: MutableNesting[T]) -> None: def __setitem__(self, key: T, value: MutableNesting[T]) -> None:
if key not in self._data: if key not in self._data:
self.insert(key, value) self.insert(key, value)
return else:
self._data[key] = value self._data[key] = value
if self.hook: if self.hook:
self.hook(e.SetItemEvent(index=key, item=value, path=self.new_path(key))) self.hook(e.SetItemEvent(value, path=self.new_path(key)))
def __delitem__(self, key: T) -> None: def __delitem__(self, key: T) -> None:
item = self._data[key] item = self._data[key]
del self._data[key] del self._data[key]
if self.hook: if self.hook:
self.hook(e.RemoveItemEvent(index=key, item=item, path=self.new_path(key))) self.hook(e.RemoveItemEvent(item, path=self.new_path(key)))

2
src/hooked_containers/sequence.py
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@@ -42,4 +42,4 @@ class HookedList(HookedContainer[T], MutableSequence[T]):
def insert(self, index, value): def insert(self, index, value):
self._data.insert(index, value) self._data.insert(index, value)
if self.hook: if self.hook:
self.hook(e.AddItemEvent(index=index, item=value, path=self._path)) self.hook(e.AddItemEvent(self.new_path(index), value))