refactor: Mode, View, Bind

src/app/config/modes.rs

@@ -0,0 +1,27 @@
+use crate::*;
+
+/// Collection of UI modes.
+#[derive(Default, Debug, Clone)]
+pub struct Modes(
+    Arc<RwLock<BTreeMap<Arc<str>, Arc<Mode<Arc<str>>>>>>
+);
+
+impl Modes {
+    pub fn add (&self, name: &impl AsRef<str>, body: &impl Language) -> Usually<()> {
+        let mut mode = Mode::default();
+        body.each(|item|mode.add(item))?;
+        self.0.write().unwrap().insert(name.as_ref().into(), Arc::new(mode));
+        Ok(())
+    }
+    pub fn get (&self, name: impl AsRef<str>) -> Option<Arc<Mode<Arc<str>>>> {
+        self.0.read().unwrap().get(name.as_ref()).cloned()
+    }
+    pub fn for_each <T> (&self, mut ator: impl FnMut(&str, &Mode<Arc<str>>)->T) {
+        for (k, v) in self.0.read().unwrap().iter() {
+            let _ = ator(k.as_ref(), v.as_ref());
+        }
+    }
+    pub fn len (&self) -> usize {
+        self.0.read().unwrap().len()
+    }
+}