Feat help alt key binding

README.md

@@ -608,6 +608,7 @@ command line option.
 | Command                | Description                                     | Default  |
 |------------------------|-------------------------------------------------|----------|
 | `toggle-help`          | Toggle help                                     | `h`      |
+| `toggle-help-alt`      | Toggle help (alternative binding)               | `?`      |
 | `toggle-settings`      | Toggle settings                                 | `s`      |
 | `next-hop`             | Select next hop                                 | `down`   |
 | `previous-hop`         | Select previous hop                             | `up`     |

src/config/binding.rs

@@ -11,6 +11,7 @@ use strum::{AsRefStr, EnumString, EnumVariantNames};
 #[derive(Debug, Clone, Copy)]
 pub struct TuiBindings {
     pub toggle_help: TuiKeyBinding,
+    pub toggle_help_alt: TuiKeyBinding,
     pub toggle_settings: TuiKeyBinding,
     pub previous_hop: TuiKeyBinding,
     pub next_hop: TuiKeyBinding,
@@ -45,6 +46,7 @@ impl TuiBindings {
     pub fn find_duplicates(&self) -> Vec<String> {
         let (_, duplicates) = [
             (self.toggle_help, TuiCommandItem::ToggleHelp),
+            (self.toggle_help_alt, TuiCommandItem::ToggleHelpAlt),
             (self.toggle_settings, TuiCommandItem::ToggleSettings),
             (self.previous_hop, TuiCommandItem::PreviousHop),
             (self.next_hop, TuiCommandItem::NextHop),
@@ -104,6 +106,10 @@ impl From<(HashMap<TuiCommandItem, TuiKeyBinding>, ConfigBindings)> for TuiBindi
                 .get(&TuiCommandItem::ToggleHelp)
                 .or(cfg.toggle_help.as_ref())
                 .unwrap_or(&TuiKeyBinding::new(KeyCode::Char('h'))),
+            toggle_help_alt: *cmd_items
+                .get(&TuiCommandItem::ToggleHelpAlt)
+                .or(cfg.toggle_help_alt.as_ref())
+                .unwrap_or(&TuiKeyBinding::new(KeyCode::Char('?'))),
             toggle_settings: *cmd_items
                 .get(&TuiCommandItem::ToggleSettings)
                 .or(cfg.toggle_settings.as_ref())
@@ -435,6 +441,8 @@ impl Display for TuiKeyBinding {
 pub enum TuiCommandItem {
     /// Toggle the help dialog.
     ToggleHelp,
+    /// Alternative command to toggle the help dialog.
+    ToggleHelpAlt,
     /// Toggle the settings dialog.
     ToggleSettings,
     /// Move down to the next hop.

src/config/file.rs

@@ -176,6 +176,7 @@ pub struct ConfigThemeColors {
 #[serde(rename_all = "kebab-case", deny_unknown_fields)]
 pub struct ConfigBindings {
     pub toggle_help: Option<TuiKeyBinding>,
+    pub toggle_help_alt: Option<TuiKeyBinding>,
     pub toggle_settings: Option<TuiKeyBinding>,
     pub previous_hop: Option<TuiKeyBinding>,
     pub next_hop: Option<TuiKeyBinding>,

src/frontend.rs

@@ -68,6 +68,7 @@ fn run_app<B: Backend>(
                     let bindings = &app.tui_config.bindings;
                     if app.show_help {
                         if bindings.toggle_help.check(key)
+                            || bindings.toggle_help_alt.check(key)
                             || bindings.clear_selection.check(key)
                             || bindings.quit.check(key)
                         {
@@ -88,7 +89,8 @@ fn run_app<B: Backend>(
                         } else if bindings.previous_hop.check(key) {
                             app.previous_settings_item();
                         }
-                    } else if bindings.toggle_help.check(key) {
+                    } else if bindings.toggle_help.check(key) || bindings.toggle_help_alt.check(key)
+                    {
                         app.toggle_help();
                     } else if bindings.toggle_settings.check(key) {
                         app.toggle_settings();

src/frontend/binding.rs

@@ -7,6 +7,7 @@ use std::fmt::{Display, Formatter};
 #[derive(Debug, Clone, Copy)]
 pub struct Bindings {
     pub toggle_help: KeyBinding,
+    pub toggle_help_alt: KeyBinding,
     pub toggle_settings: KeyBinding,
     pub previous_hop: KeyBinding,
     pub next_hop: KeyBinding,
@@ -38,6 +39,7 @@ impl From<TuiBindings> for Bindings {
     fn from(value: TuiBindings) -> Self {
         Self {
             toggle_help: KeyBinding::from(value.toggle_help),
+            toggle_help_alt: KeyBinding::from(value.toggle_help_alt),
             toggle_settings: KeyBinding::from(value.toggle_settings),
             previous_hop: KeyBinding::from(value.previous_hop),
             next_hop: KeyBinding::from(value.next_hop),

src/frontend/render/help.rs

@@ -44,7 +44,7 @@ const HELP_LINES: [&str; 20] = [
     "{ & }            - expand & collapse hosts to max and min",
     "+ & -            - zoom chart in and out",
     "z                - toggle AS information (if available)",
-    "h                - toggle help",
+    "h or ?           - toggle help",
     "s                - toggle settings",
     "q                - quit",
 ];

src/frontend/render/settings.rs

@@ -259,6 +259,7 @@ fn format_binding_settings(app: &TuiApp) -> Vec<SettingsItem> {
     let binds = &app.tui_config.bindings;
     vec![
         SettingsItem::new("toggle-help", format!("{}", binds.toggle_help)),
+        SettingsItem::new("toggle-help-alt", format!("{}", binds.toggle_help_alt)),
         SettingsItem::new("toggle-settings", format!("{}", binds.toggle_settings)),
         SettingsItem::new("next-hop", format!("{}", binds.next_hop)),
         SettingsItem::new("previous-hop", format!("{}", binds.previous_hop)),
@@ -399,7 +400,7 @@ pub const SETTINGS_TABS: [(&str, usize); 6] = [
     ("Trace", 14),
     ("Dns", 3),
     ("GeoIp", 1),
-    ("Bindings", 25),
+    ("Bindings", 26),
     ("Theme", 27),
 ];
 

trippy-config-sample.toml

@@ -285,6 +285,7 @@ map-info-panel-text-color = "gray"
 # See https://github.com/fujiapple852/trippy#key-bindings-reference for details.
 [bindings]
 toggle-help = "h"
+toggle-help-alt = "?"
 toggle-settings = "s"
 next-hop = "down"
 previous-hop = "up"