Refactored to require handlers to specify the components they rely on and to specify when they are ready. This fixes a lot of bugs with the UI when users try to press buttons while the application is still loading.

src/handlers/mod.rs

@@ -19,17 +19,45 @@ pub trait KeyEventHandler<'a, 'b, T: Into<Route>> {
   fn handle_key_event(&mut self) {
     let key = self.get_key();
     match key {
-      _ if *key == DEFAULT_KEYBINDINGS.up.key => self.handle_scroll_up(),
-      _ if *key == DEFAULT_KEYBINDINGS.down.key => self.handle_scroll_down(),
-      _ if *key == DEFAULT_KEYBINDINGS.home.key => self.handle_home(),
-      _ if *key == DEFAULT_KEYBINDINGS.end.key => self.handle_end(),
-      _ if *key == DEFAULT_KEYBINDINGS.delete.key => self.handle_delete(),
+      _ if *key == DEFAULT_KEYBINDINGS.up.key => {
+        if self.is_ready() {
+          self.handle_scroll_up();
+        }
+      }
+      _ if *key == DEFAULT_KEYBINDINGS.down.key => {
+        if self.is_ready() {
+          self.handle_scroll_down();
+        }
+      }
+      _ if *key == DEFAULT_KEYBINDINGS.home.key => {
+        if self.is_ready() {
+          self.handle_home();
+        }
+      }
+      _ if *key == DEFAULT_KEYBINDINGS.end.key => {
+        if self.is_ready() {
+          self.handle_end();
+        }
+      }
+      _ if *key == DEFAULT_KEYBINDINGS.delete.key => {
+        if self.is_ready() {
+          self.handle_delete();
+        }
+      }
       _ if *key == DEFAULT_KEYBINDINGS.left.key || *key == DEFAULT_KEYBINDINGS.right.key => {
         self.handle_left_right_action()
       }
-      _ if *key == DEFAULT_KEYBINDINGS.submit.key => self.handle_submit(),
+      _ if *key == DEFAULT_KEYBINDINGS.submit.key => {
+        if self.is_ready() {
+          self.handle_submit();
+        }
+      }
       _ if *key == DEFAULT_KEYBINDINGS.esc.key => self.handle_esc(),
-      _ => self.handle_char_key_event(),
+      _ => {
+        if self.is_ready() {
+          self.handle_char_key_event();
+        }
+      }
     }
   }
 
@@ -40,6 +68,7 @@ pub trait KeyEventHandler<'a, 'b, T: Into<Route>> {
   fn accepts(active_block: &'a T) -> bool;
   fn with(key: &'a Key, app: &'a mut App<'b>, active_block: &'a T, context: &'a Option<T>) -> Self;
   fn get_key(&self) -> &Key;
+  fn is_ready(&self) -> bool;
   fn handle_scroll_up(&mut self);
   fn handle_scroll_down(&mut self);
   fn handle_home(&mut self);