fixed ui and themes for tree view + neovim plugin wrapper

src/app.rs

@@ -1,4 +1,4 @@
-use crate::format::EnvVar;
+use crate::format::ConfigItem;
 use tui_input::Input;
 
 /// Represents the current operating mode of the application.
@@ -14,7 +14,7 @@ pub enum Mode {
 /// The core application state, holding all configuration variables and UI status.
 pub struct App {
     /// The list of configuration variables being edited.
-    pub vars: Vec<EnvVar>,
+    pub vars: Vec<ConfigItem>,
     /// Index of the currently selected variable in the list.
     pub selected: usize,
     /// The current interaction mode (Normal or Insert).
@@ -31,8 +31,8 @@ pub struct App {
 
 impl App {
     /// Initializes a new application instance with the provided variables.
-    pub fn new(vars: Vec<EnvVar>) -> Self {
-        let initial_input = vars.get(0).map(|v| v.value.clone()).unwrap_or_default();
+    pub fn new(vars: Vec<ConfigItem>) -> Self {
+        let initial_input = vars.get(0).and_then(|v| v.value.clone()).unwrap_or_default();
         Self {
             vars,
             selected: 0,
@@ -78,6 +78,22 @@ impl App {
         }
     }
 
+    /// Jumps to the top of the list.
+    pub fn jump_top(&mut self) {
+        if !self.vars.is_empty() {
+            self.selected = 0;
+            self.sync_input_with_selected();
+        }
+    }
+
+    /// Jumps to the bottom of the list.
+    pub fn jump_bottom(&mut self) {
+        if !self.vars.is_empty() {
+            self.selected = self.vars.len() - 1;
+            self.sync_input_with_selected();
+        }
+    }
+
     /// Jumps to the next variable that matches the search query.
     pub fn jump_next_match(&mut self) {
         let indices = self.matching_indices();
@@ -118,21 +134,29 @@ impl App {
     /// Updates the input buffer to reflect the value of the currently selected variable.
     pub fn sync_input_with_selected(&mut self) {
         if let Some(var) = self.vars.get(self.selected) {
-            self.input = Input::new(var.value.clone());
+            let val = var.value.clone().unwrap_or_default();
+            self.input = Input::new(val);
         }
     }
 
     /// Commits the current text in the input buffer back to the selected variable's value.
     pub fn commit_input(&mut self) {
         if let Some(var) = self.vars.get_mut(self.selected) {
-            var.value = self.input.value().to_string();
+            if !var.is_group {
+                var.value = Some(self.input.value().to_string());
+                var.status = crate::format::ItemStatus::Modified;
+            }
         }
     }
 
     /// Transitions the application into Insert Mode.
     pub fn enter_insert(&mut self) {
-        self.mode = Mode::Insert;
-        self.status_message = None;
+        if let Some(var) = self.vars.get(self.selected) {
+            if !var.is_group {
+                self.mode = Mode::Insert;
+                self.status_message = None;
+            }
+        }
     }
 
     /// Commits the current input and transitions the application into Normal Mode.