feat: implement TpptSlideMaster and TpptSlideLayout classes for slide management

Author: ya7010

design/slide_master.py

@@ -0,0 +1,77 @@
+from typing import Any, ClassVar, Self, Type, TypeVar, overload
+
+from typing_extensions import dataclass_transform
+
+
+class TpptSlideMasterMeta(type):
+    """TpptSlideMasterのメタクラス"""
+
+    def __getattr__(self, key: str) -> Any:
+        if key in self.__annotations__:
+            annotation = self.__annotations__[key]
+            if issubclass(annotation, TpptSlideLayout):
+                return annotation
+            else:
+                raise AttributeError(f"属性 {key} は {annotation} ではありません")
+
+
+@dataclass_transform(
+    eq_default=True,
+    order_default=False,
+    field_specifiers=(),
+)
+class TpptSlideMaster(metaclass=TpptSlideMasterMeta):
+    """スライドマスターのベースクラス"""
+
+    _template_path: ClassVar[str | None] = None
+
+    @classmethod
+    def get_template_path(cls) -> str | None:
+        """
+        テンプレートパスを取得する
+        """
+        return cls._template_path
+
+
+class TpptSlideLayout:
+    """スライドレイアウトのベースクラス"""
+
+    @overload
+    def __get__(self, instance: None, objtype: type[Any]) -> type[Self]: ...
+
+    @overload
+    def __get__(self, instance: object, objtype: type[Any]) -> Self: ...
+
+    def __get__(self, instance: object | None, objtype: type[Any]) -> type[Self] | Self:
+        if instance is None:
+            return type(self)
+
+        else:
+            return self
+
+
+# 型変数を調整
+TpptSlideMasterType = TypeVar("TpptSlideMasterType", bound=Type[TpptSlideMaster])
+TpptSlideLayoutType = TypeVar("TpptSlideLayoutType", bound=Type[TpptSlideLayout])
+
+
+class MyMasterSlide(TpptSlideLayout): ...
+
+
+class MyTitleSlide(TpptSlideLayout): ...
+
+
+class MyContentSlide(TpptSlideLayout): ...
+
+
+class MySlideMaster(TpptSlideMaster):
+    master: MyMasterSlide
+    title: MyTitleSlide
+    totle_and_content: MyContentSlide
+
+
+# 以下のアサーションが通るようにせよ
+master: type[TpptSlideMaster] = MySlideMaster
+assert MySlideMaster.master == MyMasterSlide
+assert MySlideMaster.title == MyTitleSlide
+assert MySlideMaster.totle_and_content == MyContentSlide