String Optizations

src/ui/components/monitor_list.rs

@@ -1,5 +1,7 @@
 use std::borrow::Cow;
 use std::cmp::min;
+use std::collections::HashMap;
+use std::sync::OnceLock;
 
 use crate::i18n::t;
 use crate::ui::dashboard::{
@@ -17,6 +19,8 @@ use ratatui::{
 const STATUS_LINE_LENGTH: usize = 100;
 const MAX_NAME_LENGTH: usize = 30;
 
+static STATUS_CHARS: OnceLock<HashMap<MonitorStatus, Cow<'static, str>>> = OnceLock::new();
+
 pub fn render_monitor_list(main_frame: &mut Frame, area: Rect, state: &mut DashboardViewState) {
     let available_height = area.height as usize;
     let max_scroll = state.get_total_lenght().saturating_sub(available_height);
@@ -31,7 +35,7 @@ pub fn render_monitor_list(main_frame: &mut Frame, area: Rect, state: &mut Dashb
     let mut lines_skipped = 0;
     let half = state.get_total_lenght().saturating_div(2);
 
-    for (i, group) in state.groups.iter().enumerate() {
+    for (_i, group) in state.groups.iter().enumerate() {
         let group_height = group.monitors.len() + BORDER_LINES_VIEW;
 
         if lines_skipped + group_height <= scroll_pos {
@@ -146,12 +150,15 @@ fn render_monitor_table(
     frame.render_widget(table, area);
 }
 
-pub fn get_status_char(status: &MonitorStatus) -> char {
-    match status {
-        MonitorStatus::Up => '■',
-        MonitorStatus::Down => '■',
-        MonitorStatus::Unknown => '■',
-    }
+fn get_status_char(status: &MonitorStatus) -> Cow<'static, str> {
+    let map = STATUS_CHARS.get_or_init(|| {
+        let mut m = HashMap::new();
+        m.insert(MonitorStatus::Up, Cow::Borrowed("■"));
+        m.insert(MonitorStatus::Down, Cow::Borrowed("■"));
+        m.insert(MonitorStatus::Unknown, Cow::Borrowed("■"));
+        m
+    });
+    map.get(status).cloned().unwrap_or(Cow::Borrowed("?"))
 }
 
 pub fn get_status_color(status: &MonitorStatus) -> Color {
@@ -162,11 +169,14 @@ pub fn get_status_color(status: &MonitorStatus) -> Color {
     }
 }
 
-pub fn get_status_emoji(status: &MonitorStatus) -> &str {
+pub fn get_status_emoji(status: &MonitorStatus) -> Cow<'static, str> {
+    static UP_ICON: &str ="✅";
+    static DOWN_ICON: &str ="❌";
+    static UNKNOWN_ICON: &str = "❓";
     match status {
-        MonitorStatus::Up => "✅",
-        MonitorStatus::Down => "❌",
-        MonitorStatus::Unknown => "❓",
+        MonitorStatus::Up => Cow::Borrowed(UP_ICON),
+        MonitorStatus::Down => Cow::Borrowed(DOWN_ICON),
+        MonitorStatus::Unknown => Cow::Borrowed(UNKNOWN_ICON),
     }
 }
 

src/ui/dashboard/model.rs

@@ -6,7 +6,7 @@ use rayon::prelude::*;
 use std::borrow::Cow;
 pub const BORDER_LINES_VIEW: usize = 3;
 
-#[derive(Debug, Clone, PartialEq)]
+#[derive(Debug, Clone, PartialEq, Eq, Hash)]
 pub enum MonitorStatus {
     Up,
     Down,