refactor(core): Split up the large menu trait.

crates/pikl-core/src/model/traits.rs

@@ -32,9 +32,6 @@ pub trait Menu: Send + 'static {
     /// position in the filtered results.
     fn filtered_label(&self, filtered_index: usize) -> Option<&str>;
 
-    /// Add raw values from streaming input or AddItems actions.
-    fn add_raw(&mut self, values: Vec<serde_json::Value>);
-
     /// Get the JSON value of a filtered item for output.
     /// Returns a reference to the stored value.
     fn serialize_filtered(&self, filtered_index: usize) -> Option<&serde_json::Value>;
@@ -44,14 +41,6 @@ pub trait Menu: Send + 'static {
     /// for output and hook events.
     fn original_index(&self, filtered_index: usize) -> Option<usize>;
 
-    /// Replace all items with a new set of values. Used by
-    /// handler hook `replace_items` responses.
-    fn replace_all(&mut self, values: Vec<serde_json::Value>);
-
-    /// Remove items at the given original indices. Used by
-    /// handler hook `remove_items` responses.
-    fn remove_by_indices(&mut self, indices: Vec<usize>);
-
     /// Get the formatted display text for a filtered item,
     /// if a format template is configured. Returns None if
     /// no template is set, in which case the raw label is
@@ -73,3 +62,20 @@ pub trait Menu: Send + 'static {
             .collect()
     }
 }
+
+/// Extension of [`Menu`] with mutation methods. Required by
+/// [`MenuRunner`] which needs to add, replace, and remove
+/// items. Embedders that only need read-only access can
+/// depend on `Menu` alone.
+pub trait MutableMenu: Menu {
+    /// Add raw values from streaming input or AddItems actions.
+    fn add_raw(&mut self, values: Vec<serde_json::Value>);
+
+    /// Replace all items with a new set of values. Used by
+    /// handler hook `replace_items` responses.
+    fn replace_all(&mut self, values: Vec<serde_json::Value>);
+
+    /// Remove items at the given original indices. Used by
+    /// handler hook `remove_items` responses.
+    fn remove_by_indices(&mut self, indices: Vec<usize>);
+}