Refactored the UI module and the handlers module to do a more chain-of-responsibility method to manage the UI's and handlers for different key events. Also, initial work for indexer settings as well

src/handlers/radarr_handlers/indexers/edit_indexer_settings_handler.rs

@@ -0,0 +1,74 @@
+use crate::app::radarr::{ActiveRadarrBlock, INDEXER_SETTINGS_BLOCKS};
+use crate::app::App;
+use crate::event::Key;
+use crate::handlers::KeyEventHandler;
+
+#[cfg(test)]
+#[path = "./edit_indexer_settings_handler_tests.rs"]
+mod edit_indexer_settings_handler_tests;
+
+pub(super) struct IndexerSettingsHandler<'a, 'b> {
+  key: &'a Key,
+  app: &'a mut App<'b>,
+  active_radarr_block: &'a ActiveRadarrBlock,
+  _context: &'a Option<ActiveRadarrBlock>,
+}
+
+impl<'a, 'b> KeyEventHandler<'a, 'b, ActiveRadarrBlock> for IndexerSettingsHandler<'a, 'b> {
+  fn accepts(active_block: &'a ActiveRadarrBlock) -> bool {
+    INDEXER_SETTINGS_BLOCKS.contains(active_block)
+  }
+
+  fn with(
+    key: &'a Key,
+    app: &'a mut App<'b>,
+    active_block: &'a ActiveRadarrBlock,
+    _context: &'a Option<ActiveRadarrBlock>,
+  ) -> IndexerSettingsHandler<'a, 'b> {
+    IndexerSettingsHandler {
+      key,
+      app,
+      active_radarr_block: active_block,
+      _context,
+    }
+  }
+
+  fn get_key(&self) -> &Key {
+    self.key
+  }
+
+  fn handle_scroll_up(&mut self) {
+    if self.active_radarr_block == &ActiveRadarrBlock::IndexerSettingsPrompt {
+      self.app.data.radarr_data.selected_block.previous()
+    }
+  }
+
+  fn handle_scroll_down(&mut self) {
+    if self.active_radarr_block == &ActiveRadarrBlock::IndexerSettingsPrompt {
+      self.app.data.radarr_data.selected_block.next()
+    }
+  }
+
+  fn handle_home(&mut self) {}
+
+  fn handle_end(&mut self) {}
+
+  fn handle_delete(&mut self) {}
+
+  fn handle_left_right_action(&mut self) {}
+
+  fn handle_submit(&mut self) {}
+
+  fn handle_esc(&mut self) {
+    match self.active_radarr_block {
+      ActiveRadarrBlock::IndexerSettingsPrompt => {
+        self.app.pop_navigation_stack();
+        self.app.data.radarr_data.prompt_confirm = false;
+        self.app.data.radarr_data.indexer_settings = None;
+      }
+      _ => self.app.pop_navigation_stack(), // Need to tweak this still and add unit tests
+    }
+  }
+
+  fn handle_char_key_event(&mut self) {}
+}