added a way to search through list, ref #2093

src/list/scroll_state.rs

@@ -46,7 +46,7 @@ impl ScrollState {
         self.selected
     }
 
-    fn set_selected(&mut self, selected: usize) {
+    pub fn set_selected(&mut self, selected: usize) {
         self.selected = Some(selected);
         self.update_offset();
     }

src/list/state.rs

@@ -45,6 +45,7 @@ pub struct ListState<'a> {
     term_height: u16,
     separator_line: Vec<u8>,
     show_footer: bool,
+    pub search_query: String,
 }
 
 impl<'a> ListState<'a> {
@@ -78,6 +79,7 @@ impl<'a> ListState<'a> {
             term_height: 0,
             separator_line: Vec::new(),
             show_footer: true,
+            search_query: String::new(),
         };
 
         slf.set_term_size(width, height);
@@ -356,6 +358,41 @@ impl<'a> ListState<'a> {
 
         Ok(())
     }
+    
+    pub fn select_if_matches_search_query(&mut self) {
+        eprintln!("search query: {:?}", self.search_query); 
+
+        let idx = self
+            .app_state
+            .exercises()
+            .iter()
+            .enumerate()
+            .find_map(|(i, s)| {
+                if s.name.contains(self.search_query.as_str()) {
+                    Some(i)
+                } else {
+                    None
+                }
+            });
+        eprintln!("idx: {:?}", idx);
+        
+        match idx {
+            Some(i) => {
+                // ? do we need this function call?
+                // let exercise_ind = self.selected_to_exercise_ind(i).unwrap();
+                let exercise_ind = i;
+                self.scroll_state.set_selected(exercise_ind);
+                eprintln!("exercise_ind: {:?}", exercise_ind);
+                self.update_rows();
+            }
+            None => {
+                let msg = String::from("[NOT FOUND]") + &self.message.clone();
+                self.message.clear();
+                self.message.push_str(&msg);
+            }
+        }
+        
+    }
 
     // Return `true` if there was something to select.
     pub fn selected_to_current_exercise(&mut self) -> Result<bool> {