feat(config): allow specifying multiple keymaps for the same action + better defaults (#149)

Fixes #135

.config/config.toml

@@ -75,8 +75,8 @@ theme = "Coldark-Dark"
 # Quit the application
 quit = "esc"
 # Scrolling through entries
-select_next_entry = "down"
+select_next_entry = ["down", "ctrl-n", "ctrl-j"]
-select_prev_entry = "up"
+select_prev_entry = ["up", "ctrl-p", "ctrl-k"]
 select_next_page = "pagedown"
 select_prev_page = "pageup"
 # Scrolling the preview pane
@@ -102,8 +102,8 @@ toggle_preview = "ctrl-o"
 # Quit the application
 quit = "esc"
 # Scrolling through entries
-select_next_entry = "down"
+select_next_entry = ["down", "ctrl-n", "ctrl-j"]
-select_prev_entry = "up"
+select_prev_entry = ["up", "ctrl-p", "ctrl-k"]
 select_next_page = "pagedown"
 select_prev_page = "pageup"
 # Select an entry
@@ -122,8 +122,8 @@ toggle_preview = "ctrl-o"
 # Quit the application
 quit = "esc"
 # Scrolling through entries
-select_next_entry = "down"
+select_next_entry = ["down", "ctrl-n", "ctrl-j"]
-select_prev_entry = "up"
+select_prev_entry = ["up", "ctrl-p", "ctrl-k"]
 select_next_page = "pagedown"
 select_prev_page = "pageup"
 # Select an entry

crates/television/config.rs

@@ -3,8 +3,7 @@ use std::{env, path::PathBuf};
 
 use color_eyre::Result;
 use directories::ProjectDirs;
-pub use keybindings::parse_key;
+pub use keybindings::{parse_key, Binding, KeyBindings};
-pub use keybindings::KeyBindings;
 use lazy_static::lazy_static;
 use previewers::PreviewersConfig;
 use serde::Deserialize;
@@ -118,7 +117,7 @@ impl Config {
                 for (command, key) in default_bindings {
                     user_bindings
                         .entry(command.clone())
-                        .or_insert_with(|| *key);
+                        .or_insert_with(|| key.clone());
                 }
             }
 

crates/television/config/keybindings.rs

@@ -3,14 +3,34 @@ use crate::event::{convert_raw_event_to_key, Key};
 use crossterm::event::{KeyCode, KeyEvent, KeyModifiers};
 use serde::{Deserialize, Deserializer};
 use std::collections::HashMap;
+use std::fmt::Display;
 use std::ops::{Deref, DerefMut};
 use television_screen::mode::Mode;
 
+#[derive(Clone, Debug, Deserialize)]
+pub enum Binding {
+    SingleKey(Key),
+    MultipleKeys(Vec<Key>),
+}
+
+impl Display for Binding {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Binding::SingleKey(key) => write!(f, "{}", key),
+            Binding::MultipleKeys(keys) => {
+                let keys_str: Vec<String> =
+                    keys.iter().map(|k| k.to_string()).collect();
+                write!(f, "{}", keys_str.join(", "))
+            }
+        }
+    }
+}
+
 #[derive(Clone, Debug, Default)]
-pub struct KeyBindings(pub config::Map<Mode, config::Map<Action, Key>>);
+pub struct KeyBindings(pub config::Map<Mode, config::Map<Action, Binding>>);
 
 impl Deref for KeyBindings {
-    type Target = config::Map<Mode, config::Map<Action, Key>>;
+    type Target = config::Map<Mode, config::Map<Action, Binding>>;
     fn deref(&self) -> &Self::Target {
         &self.0
     }
@@ -22,13 +42,20 @@ impl DerefMut for KeyBindings {
     }
 }
 
+#[derive(Clone, Debug, Deserialize)]
+#[serde(untagged)]
+pub enum SerializedBinding {
+    SingleKey(String),
+    MultipleKeys(Vec<String>),
+}
+
 impl<'de> Deserialize<'de> for KeyBindings {
     fn deserialize<D>(deserializer: D) -> color_eyre::Result<Self, D::Error>
     where
         D: Deserializer<'de>,
     {
         let parsed_map =
-            HashMap::<Mode, HashMap<Action, String>>::deserialize(
+            HashMap::<Mode, HashMap<Action, SerializedBinding>>::deserialize(
                 deserializer,
             )?;
 
@@ -37,7 +64,28 @@ impl<'de> Deserialize<'de> for KeyBindings {
             .map(|(mode, inner_map)| {
                 let converted_inner_map = inner_map
                     .into_iter()
-                    .map(|(cmd, key_str)| (cmd, parse_key(&key_str).unwrap()))
+                    .map(|(cmd, binding)| {
+                        (
+                            cmd,
+                            match binding {
+                                SerializedBinding::SingleKey(key_str) => {
+                                    Binding::SingleKey(
+                                        parse_key(&key_str).unwrap(),
+                                    )
+                                }
+                                SerializedBinding::MultipleKeys(keys_str) => {
+                                    Binding::MultipleKeys(
+                                        keys_str
+                                            .iter()
+                                            .map(|key_str| {
+                                                parse_key(key_str).unwrap()
+                                            })
+                                            .collect(),
+                                    )
+                                }
+                            },
+                        )
+                    })
                     .collect();
                 (mode, converted_inner_map)
             })

crates/television/keymap.rs

@@ -5,7 +5,7 @@ use color_eyre::Result;
 use television_screen::mode::Mode;
 
 use crate::action::Action;
-use crate::config::KeyBindings;
+use crate::config::{Binding, KeyBindings};
 use crate::event::Key;
 
 #[derive(Default, Debug)]
@@ -23,8 +23,17 @@ impl From<&KeyBindings> for Keymap {
         let mut keymap = HashMap::new();
         for (mode, bindings) in keybindings.iter() {
             let mut mode_keymap = HashMap::new();
-            for (action, key) in bindings {
+            for (action, binding) in bindings {
-                mode_keymap.insert(*key, action.clone());
+                match binding {
+                    Binding::SingleKey(key) => {
+                        mode_keymap.insert(*key, action.clone());
+                    }
+                    Binding::MultipleKeys(keys) => {
+                        for key in keys {
+                            mode_keymap.insert(*key, action.clone());
+                        }
+                    }
+                }
             }
             keymap.insert(*mode, mode_keymap);
         }

crates/television/television.rs

@@ -458,6 +458,7 @@ impl Television {
                 .get(&self.mode)
                 .unwrap()
                 .get(&Action::ToggleHelp)
+                // just display the first keybinding
                 .unwrap()
                 .to_string(),
             &self
@@ -466,6 +467,7 @@ impl Television {
                 .get(&self.mode)
                 .unwrap()
                 .get(&Action::TogglePreview)
+                // just display the first keybinding
                 .unwrap()
                 .to_string(),
         )?;