Remove `Focus` in `pane_grid`

Since #608, the `PaneGrid` widget does not handle pane focus.

glow/src/widget/pane_grid.rs

@@ -11,8 +11,8 @@
 use crate::Renderer;
 
 pub use iced_native::pane_grid::{
-    Axis, Configuration, Direction, DragEvent, Focus, Node, Pane, ResizeEvent,
-    Split, State,
+    Axis, Configuration, Direction, DragEvent, Node, Pane, ResizeEvent, Split,
+    State,
 };
 
 /// A collection of panes distributed using either vertical or horizontal splits

graphics/src/widget/pane_grid.rs

@@ -20,8 +20,8 @@ use iced_native::{
 };
 
 pub use iced_native::pane_grid::{
-    Axis, Configuration, Content, Direction, DragEvent, Focus, Pane,
-    ResizeEvent, Split, State, TitleBar,
+    Axis, Configuration, Content, Direction, DragEvent, Pane, ResizeEvent,
+    Split, State, TitleBar,
 };
 
 /// A collection of panes distributed using either vertical or horizontal splits

native/src/widget/pane_grid.rs

@@ -25,7 +25,7 @@ pub use direction::Direction;
 pub use node::Node;
 pub use pane::Pane;
 pub use split::Split;
-pub use state::{Focus, State};
+pub use state::State;
 pub use title_bar::TitleBar;
 
 use crate::container;

native/src/widget/pane_grid/state.rs

@@ -26,22 +26,6 @@ pub struct State<T> {
     pub(super) internal: Internal,
 }
 
-/// The current focus of a [`Pane`].
-///
-/// [`Pane`]: struct.Pane.html
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
-pub enum Focus {
-    /// The [`Pane`] is just focused.
-    ///
-    /// [`Pane`]: struct.Pane.html
-    Idle,
-
-    /// The [`Pane`] is being dragged.
-    ///
-    /// [`Pane`]: struct.Pane.html
-    Dragging,
-}
-
 impl<T> State<T> {
     /// Creates a new [`State`], initializing the first pane with the provided
     /// state.

wgpu/src/widget/pane_grid.rs

@@ -11,8 +11,8 @@
 use crate::Renderer;
 
 pub use iced_native::pane_grid::{
-    Axis, Configuration, Direction, DragEvent, Focus, Node, Pane, ResizeEvent,
-    Split, State,
+    Axis, Configuration, Direction, DragEvent, Node, Pane, ResizeEvent, Split,
+    State,
 };
 
 /// A collection of panes distributed using either vertical or horizontal splits