1 files changed, 60 insertions, 0 deletions
diff --git a/src/state/bar.rs b/src/state/bar.rs
new file mode 100644
index 0000000..6462449
--- /dev/null
+++ b/src/state/bar.rs
@@ -0,0 +1,60 @@
+macro_rules! BarState {
+    ($name:ident, $cfg:expr, $cfg_mut:expr) => {
+        use crate::lua::evalsto::EvalTo;
+        use crate::state::view::mode::Mode;
+        use crate::widgets::statusbar::StatusBar;
+        use mlua::{Lua, UserData};
+
+        #[derive(Debug, Default, Clone)]
+        pub struct $name {
+            pub left: EvalTo<String, Mode>,
+            pub middle: EvalTo<String, Mode>,
+            pub right: EvalTo<String, Mode>,
+        }
+
+        impl $name {
+            pub const fn new() -> Self {
+                Self {
+                    left: EvalTo::Value(String::new()),
+                    middle: EvalTo::Value(String::new()),
+                    right: EvalTo::Value(String::new()),
+                }
+            }
+
+            pub fn apply(bar: &mut StatusBar, mode: Mode, lua: &Lua) {
+                let (left, middle, right) = (
+                    $cfg.left.get(mode, lua).unwrap_or_default(),
+                    $cfg.middle.get(mode, lua).unwrap_or_default(),
+                    $cfg.right.get(mode, lua).unwrap_or_default(),
+                );
+                bar.set_left(left);
+                bar.set_middle(middle);
+                bar.set_right(right);
+            }
+        }
+
+        impl UserData for $name {
+            fn add_fields<'lua, F: mlua::prelude::LuaUserDataFields<'lua, Self>>(fields: &mut F) {
+                fields.add_field_function_get("left", |_, _| Ok($cfg.left.clone()));
+                fields.add_field_function_set("left", |_, _, style: EvalTo<String, Mode>| {
+                    $cfg_mut.left = style;
+                    Ok(())
+                });
+
+                fields.add_field_function_get("middle", |_, _| Ok($cfg.middle.clone()));
+                fields.add_field_function_set("middle", |_, _, style: EvalTo<String, Mode>| {
+                    $cfg_mut.middle = style;
+                    Ok(())
+                });
+
+                fields.add_field_function_get("right", |_, _| Ok($cfg.right.clone()));
+                fields.add_field_function_set("right", |_, _, style: EvalTo<String, Mode>| {
+                    $cfg_mut.right = style;
+                    Ok(())
+                });
+            }
+        }
+    };
+}
+
+pub(super) use BarState;