Change View callback order to (self, interaction, item)

This is more consistent with the rest of the library which always has
the interaction as the first parameter. This has been done before in
the command extension as well, the first parameter is always either
self or the context.

discord/ui/button.py

@@ -240,8 +240,8 @@ def button(
     """A decorator that attaches a button to a component.
 
     The function being decorated should have three parameters, ``self`` representing
-    the :class:`discord.ui.View`, the :class:`discord.ui.Button` being pressed and
-    the :class:`discord.Interaction` you receive.
+    the :class:`discord.ui.View`, the :class:`discord.Interaction` you receive and
+    the :class:`discord.ui.Button` being pressed.
 
     .. note::
 

discord/ui/item.py

@@ -41,7 +41,7 @@ if TYPE_CHECKING:
 
 I = TypeVar('I', bound='Item')
 V = TypeVar('V', bound='View', covariant=True)
-ItemCallbackType = Callable[[V, I, Interaction], Coroutine[Any, Any, Any]]
+ItemCallbackType = Callable[[V, Interaction, I], Coroutine[Any, Any, Any]]
 
 
 class Item(Generic[V]):

discord/ui/select.py

@@ -305,8 +305,8 @@ def select(
     """A decorator that attaches a select menu to a component.
 
     The function being decorated should have three parameters, ``self`` representing
-    the :class:`discord.ui.View`, the :class:`discord.ui.Select` being pressed and
-    the :class:`discord.Interaction` you receive.
+    the :class:`discord.ui.View`, the :class:`discord.Interaction` you receive and
+    the :class:`discord.ui.Select` being used.
 
     In order to get the selected items that the user has chosen within the callback
     use :attr:`Select.values`.

discord/ui/view.py

@@ -23,7 +23,7 @@ DEALINGS IN THE SOFTWARE.
 """
 
 from __future__ import annotations
-from typing import Any, Callable, ClassVar, Dict, Iterator, List, Optional, Sequence, TYPE_CHECKING, Tuple
+from typing import Any, Callable, ClassVar, Coroutine, Dict, Iterator, List, Optional, Sequence, TYPE_CHECKING, Tuple
 from functools import partial
 from itertools import groupby
 
@@ -127,6 +127,18 @@ class _ViewWeights:
         self.weights = [0, 0, 0, 0, 0]
 
 
+class _ViewCallback:
+    __slots__ = ('view', 'callback', 'item')
+
+    def __init__(self, callback: ItemCallbackType[Any, Any], view: View, item: Item[View]) -> None:
+        self.callback: ItemCallbackType[Any, Any] = callback
+        self.view: View = view
+        self.item: Item[View] = item
+
+    def __call__(self, interaction: Interaction) -> Coroutine[Any, Any, Any]:
+        return self.callback(self.view, interaction, self.item)
+
+
 class View:
     """Represents a UI view.
 
@@ -169,7 +181,7 @@ class View:
         children = []
         for func in self.__view_children_items__:
             item: Item = func.__discord_ui_model_type__(**func.__discord_ui_model_kwargs__)
-            item.callback = partial(func, self, item)  # type: ignore
+            item.callback = _ViewCallback(func, self, item)
             item._view = self
             setattr(self, func.__name__, item)
             children.append(item)