Add 'control' alias to Tabs messages. (#2483)

* Add 'control' alias to Tabs messages.

Related issues: #2478.

* Changelog.

CHANGELOG.md

@@ -18,12 +18,12 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - The DataTable cursor is now scrolled into view when the cursor coordinate is changed programmatically https://github.com/Textualize/textual/issues/2459
 - run_worker exclusive parameter is now `False` by default https://github.com/Textualize/textual/pull/2470
 - Added `always_update` as an optional argument for `reactive.var`
-
 - Made Binding description default to empty string, which is equivalent to show=False https://github.com/Textualize/textual/pull/2501
 - Modified Message to allow it to be used as a dataclass https://github.com/Textualize/textual/pull/2501
 
 ### Added
 
+- Property `control` as alias for attribute `tabs` in `Tabs` messages https://github.com/Textualize/textual/pull/2483
 - Experimental: Added "overlay" rule https://github.com/Textualize/textual/pull/2501
 - Experimental: Added "constrain" rule https://github.com/Textualize/textual/pull/2501
 - Added textual.widgets.Select https://github.com/Textualize/textual/pull/2501
@@ -35,7 +35,6 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - Added `TreeNode.remove_children` https://github.com/Textualize/textual/pull/2510
 - Added `TreeNode.remove` https://github.com/Textualize/textual/pull/2510
 
-
 ## [0.23.0] - 2023-05-03
 
 ### Fixed

src/textual/widgets/_tabs.py

@@ -194,6 +194,15 @@ class Tabs(Widget, can_focus=True):
             self.tab = tab
             super().__init__()
 
+        @property
+        def control(self) -> Tabs:
+            """The tabs widget containing the tab that was activated.
+
+            This is an alias for [`TabActivated.tabs`][textual.widgets.Tabs.TabActivated.tabs]
+            which is used by the [`on`][textual.on] decorator.
+            """
+            return self.tabs
+
         def __rich_repr__(self) -> rich.repr.Result:
             yield self.tabs
             yield self.tab
@@ -213,6 +222,15 @@ class Tabs(Widget, can_focus=True):
             self.tabs = tabs
             super().__init__()
 
+        @property
+        def control(self) -> Tabs:
+            """The tabs widget which was cleared.
+
+            This is an alias for [`Cleared.tabs`][textual.widgets.Tabs.Cleared] which
+            is used by the [`on`][textual.on] decorator.
+            """
+            return self.tabs
+
         def __rich_repr__(self) -> rich.repr.Result:
             yield self.tabs