Add support for dynamic items that parse custom_id for state

discord/client.py

@@ -72,6 +72,7 @@ from .backoff import ExponentialBackoff
 from .webhook import Webhook
 from .appinfo import AppInfo
 from .ui.view import View
+from .ui.dynamic import DynamicItem
 from .stage_instance import StageInstance
 from .threads import Thread
 from .sticker import GuildSticker, StandardSticker, StickerPack, _sticker_factory
@@ -111,6 +112,7 @@ if TYPE_CHECKING:
     from .scheduled_event import ScheduledEvent
     from .threads import ThreadMember
     from .types.guild import Guild as GuildPayload
+    from .ui.item import Item
     from .voice_client import VoiceProtocol
     from .audit_logs import AuditLogEntry
 
@@ -2678,6 +2680,30 @@ class Client:
         data = await state.http.start_private_message(user.id)
         return state.add_dm_channel(data)
 
+    def add_dynamic_items(self, *items: Type[DynamicItem[Item[Any]]]) -> None:
+        r"""Registers a :class:`~discord.ui.DynamicItem` class for persistent listening.
+
+        This method accepts *class types* rather than instances.
+
+        .. versionadded:: 2.4
+
+        Parameters
+        -----------
+        \*items: Type[:class:`~discord.ui.DynamicItem`]
+            The classes of dynamic items to add.
+
+        Raises
+        -------
+        TypeError
+            The class is not a subclass of :class:`~discord.ui.DynamicItem`.
+        """
+
+        for item in items:
+            if not issubclass(item, DynamicItem):
+                raise TypeError(f'expected subclass of DynamicItem not {item.__name__}')
+
+        self._connection.store_dynamic_items(*items)
+
     def add_view(self, view: View, *, message_id: Optional[int] = None) -> None:
         """Registers a :class:`~discord.ui.View` for persistent listening.