Rename wm_class to application

example/config.yml

@@ -11,14 +11,14 @@ modmap:
       Henkan: Shift_L
 
   - name: Kana -> Windows
-    wm_class:
+    application:
       not: jetbrains-idea
     remap:
       # Use Windows since Alt is annoying in Electron apps (Slack, Nocturn)
       KatakanaHiragana: Win_R
 
   - name: Kana -> Alt
-    wm_class:
+    application:
       only: jetbrains-idea
     remap:
       # Use Alt since Windows is annoying in IDEA
@@ -34,7 +34,7 @@ keymap:
       C-j: C-m
 
   - name: Default (Nocturn, etc.)
-    wm_class:
+    application:
       not: [Google-chrome, Slack, Gnome-terminal, jetbrains-idea]
     remap:
       # Emacs basic
@@ -69,7 +69,7 @@ keymap:
       Super-d: C-delete
 
   - name: IDEA (modified from Default)
-    wm_class:
+    application:
       only: jetbrains-idea
     remap:
       # Emacs basic
@@ -113,7 +113,7 @@ keymap:
       C-c: Esc
 
   - name: Chrome, Slack (modified from Default)
-    wm_class:
+    application:
       only: [Google-chrome, Slack]
     remap:
       # Emacs basic
@@ -152,7 +152,7 @@ keymap:
       Super-d: C-delete
 
   - name: Tab changes + Alt-Enter simulation
-    wm_class:
+    application:
       not: [Gnome-terminal, Nocturn]
     remap:
       Super-o: C-Shift-tab
@@ -160,13 +160,13 @@ keymap:
       Super-Enter: M-Enter
 
   - name: Google Search
-    wm_class:
+    application:
       only: Google-chrome
     remap:
       Super-s: C-f
 
   - name: Terminal
-    wm_class:
+    application:
       only: Gnome-terminal
     remap:
       Super-o: M-o
@@ -185,7 +185,7 @@ keymap:
       Super-v: M-v
 
   - name: Nocturn
-    wm_class:
+    application:
       only: Nocturn
     remap:
       Super-j: M-j
@@ -195,7 +195,7 @@ keymap:
       Super-Enter: Shift-Enter
 
   - name: Slack
-    wm_class:
+    application:
       only: Slack
     remap:
       Super-n: C-k

example/test.yml

@@ -4,7 +4,7 @@
 #       a: b
 keymap:
   - name: Global
-    wm_class:
+    application:
       only: Slack
     remap:
       C-i: C-u

src/client/mod.rs

@@ -8,36 +8,54 @@ mod x11_client;
 mod null_client;
 
 trait Client {
-    fn current_wm_class(&mut self) -> Option<String>;
+    fn supported(&mut self) -> bool;
+    fn current_application(&mut self) -> Option<String>;
 }
 
 pub struct WMClient {
+    name: String,
     client: Box<dyn Client>,
+    called: bool,
+    last_application: String,
 }
 
 impl WMClient {
-    pub fn current_wm_class(&mut self) -> Option<String> {
-        self.client.current_wm_class()
+    fn new(name: &str, client: Box<dyn Client>) -> WMClient {
+        WMClient {
+            name: name.to_string(),
+            client,
+            called: false,
+            last_application: String::new(),
+        }
+    }
+
+    pub fn current_application(&mut self) -> Option<String> {
+        if !self.called {
+            self.called = true;
+            println!("application-client: {} (supported: {})", self.name, self.client.supported());
+        }
+        let result = self.client.current_application();
+        if let Some(application) = &result {
+            if &self.last_application != application {
+                self.last_application = application.clone();
+                println!("application: {}", application);
+            }
+        }
+        result
     }
 }
 
 #[cfg(feature = "sway")]
 pub fn build_client() -> WMClient {
-    WMClient {
-        client: Box::new(sway_client::SwayClient::new()),
-    }
+    WMClient::new("Sway", Box::new(sway_client::SwayClient::new()))
 }
 
 #[cfg(feature = "x11")]
 pub fn build_client() -> WMClient {
-    WMClient {
-        client: Box::new(x11_client::X11Client::new()),
-    }
+    WMClient::new("X11", Box::new(x11_client::X11Client::new()))
 }
 
 #[cfg(not(any(feature = "sway", feature = "x11")))]
 pub fn build_client() -> WMClient {
-    WMClient {
-        client: Box::new(null_client::NullClient::new()),
-    }
+    WMClient::new("none", Box::new(null_client::NullClient))
 }

src/client/null_client.rs

@@ -1,21 +1,13 @@
 use crate::client::Client;
 
-pub struct NullClient {
-    called: bool,
-}
-
-impl NullClient {
-    pub fn new() -> NullClient {
-        NullClient { called: false }
-    }
-}
+pub struct NullClient;
 
 impl Client for NullClient {
-    fn current_wm_class(&mut self) -> Option<String> {
-        if !self.called {
-            self.called = true;
-            println!("NullClient.supported = false");
-        }
+    fn supported(&mut self) -> bool {
+        false
+    }
+
+    fn current_application(&mut self) -> Option<String> {
         None
     }
 }

src/client/sway_client.rs

@@ -16,7 +16,9 @@ impl SwayClient {
             supported: None,
         }
     }
+}
 
+impl Client for SwayClient {
     fn supported(&mut self) -> bool {
         match self.supported {
             Some(supported) => supported,
@@ -28,16 +30,13 @@ impl SwayClient {
                         supported = true;
                     }
                 }
-                println!("SwayClient.supported = {}", supported);
                 self.supported = Some(supported);
                 supported
             }
         }
     }
-}
 
-impl Client for SwayClient {
-    fn current_wm_class(&mut self) -> Option<String> {
+    fn current_application(&mut self) -> Option<String> {
         if !self.supported() {
             return None;
         }

src/client/x11_client.rs

@@ -5,7 +5,6 @@ pub struct X11Client {
     // Both of them are lazily initialized
     display: Option<*mut xlib::Display>,
     supported: Option<bool>,
-    last_wm_class: String,
 }
 
 impl X11Client {
@@ -13,27 +12,6 @@ impl X11Client {
         X11Client {
             display: None,
             supported: None,
-            last_wm_class: String::new(),
-        }
-    }
-
-    fn supported(&mut self) -> bool {
-        match self.supported {
-            Some(supported) => supported,
-            None => {
-                let display = self.display();
-                let supported = if display.is_null() {
-                    false
-                } else {
-                    let mut focused_window = 0;
-                    let mut focus_state = 0;
-                    unsafe { xlib::XGetInputFocus(display, &mut focused_window, &mut focus_state) };
-                    focused_window > 0
-                };
-                println!("X11Client.supported = {}", supported);
-                self.supported = Some(supported);
-                supported
-            }
         }
     }
 
@@ -50,7 +28,26 @@ impl X11Client {
 }
 
 impl Client for X11Client {
-    fn current_wm_class(&mut self) -> Option<String> {
+    fn supported(&mut self) -> bool {
+        match self.supported {
+            Some(supported) => supported,
+            None => {
+                let display = self.display();
+                let supported = if display.is_null() {
+                    false
+                } else {
+                    let mut focused_window = 0;
+                    let mut focus_state = 0;
+                    unsafe { xlib::XGetInputFocus(display, &mut focused_window, &mut focus_state) };
+                    focused_window > 0
+                };
+                self.supported = Some(supported);
+                supported
+            }
+        }
+    }
+
+    fn current_application(&mut self) -> Option<String> {
         if !self.supported() {
             return None;
         }
@@ -114,11 +111,6 @@ impl Client for X11Client {
             }
             focused_window = parent;
         }
-
-        if &self.last_wm_class != &wm_class {
-            self.last_wm_class = wm_class.clone();
-            println!("wm_class: {}", &wm_class);
-        }
         Some(wm_class)
     }
 }

src/config/application.rs

@@ -5,7 +5,7 @@ use std::fmt;
 // TODO: Use trait to allow only either `only` or `not`
 #[derive(Debug, Deserialize)]
 #[serde(deny_unknown_fields)]
-pub struct WMClass {
+pub struct Application {
     #[serde(default, deserialize_with = "string_or_vec")]
     pub only: Option<Vec<String>>,
     #[serde(default, deserialize_with = "string_or_vec")]

src/config/keymap.rs

@@ -1,7 +1,7 @@
 use crate::config::action::Action;
 use crate::config::actions::Actions;
 use crate::config::key_press::KeyPress;
-use crate::config::wm_class::WMClass;
+use crate::config::application::Application;
 use serde::de::{MapAccess, Visitor};
 use serde::{Deserialize, Deserializer};
 use std::collections::HashMap;
@@ -14,7 +14,7 @@ pub struct Keymap {
     pub name: String,
     #[serde(deserialize_with = "keymap_remap")]
     pub remap: HashMap<KeyPress, Vec<Action>>,
-    pub wm_class: Option<WMClass>,
+    pub application: Option<Application>,
 }
 
 fn keymap_remap<'de, D>(deserializer: D) -> Result<HashMap<KeyPress, Vec<Action>>, D::Error>

src/config/mod.rs

@@ -4,7 +4,7 @@ mod key;
 pub mod key_press;
 mod keymap;
 mod modmap;
-pub mod wm_class;
+pub mod application;
 
 extern crate serde_yaml;
 

src/config/modmap.rs

@@ -1,5 +1,5 @@
 use crate::config::key::parse_key;
-use crate::config::wm_class::WMClass;
+use crate::config::application::Application;
 use evdev::Key;
 use serde::de::{value, Error, MapAccess, Visitor};
 use serde::{Deserialize, Deserializer};
@@ -12,7 +12,7 @@ pub struct Modmap {
     pub name: String,
     #[serde(deserialize_with = "modmap_remap")]
     pub remap: HashMap<Key, Key>,
-    pub wm_class: Option<WMClass>,
+    pub application: Option<Application>,
 }
 
 fn modmap_remap<'de, D>(deserializer: D) -> Result<HashMap<Key, Key>, D::Error>

src/event_handler.rs

@@ -1,7 +1,7 @@
 use crate::client::{build_client, WMClient};
 use crate::config::action::Action;
 use crate::config::key_press::{KeyPress, Modifier};
-use crate::config::wm_class::WMClass;
+use crate::config::application::Application;
 use crate::Config;
 use evdev::uinput::VirtualDevice;
 use evdev::{EventType, InputEvent, Key};
@@ -13,7 +13,7 @@ pub struct EventHandler {
     device: VirtualDevice,
     wm_client: WMClient,
     override_remap: Option<HashMap<KeyPress, Vec<Action>>>,
-    wm_class_cache: Option<String>,
+    application_cache: Option<String>,
     shift: PressState,
     control: PressState,
     alt: PressState,
@@ -26,7 +26,7 @@ impl EventHandler {
             device,
             wm_client: build_client(),
             override_remap: None,
-            wm_class_cache: None,
+            application_cache: None,
             shift: PressState::new(false),
             control: PressState::new(false),
             alt: PressState::new(false),
@@ -36,14 +36,14 @@ impl EventHandler {
 
     // Handle EventType::KEY
     pub fn on_event(&mut self, event: InputEvent, config: &Config) -> Result<(), Box<dyn Error>> {
-        self.wm_class_cache = None; // expire cache
+        self.application_cache = None; // expire cache
         let mut key = Key::new(event.code());
         // println!("=> {}: {:?}", event.value(), &key);
 
         // Apply modmap
         for modmap in &config.modmap {
             if let Some(modmap_key) = modmap.remap.get(&key) {
-                if let Some(wm_class_matcher) = &modmap.wm_class {
+                if let Some(wm_class_matcher) = &modmap.application {
                     if !self.match_wm_class(wm_class_matcher) {
                         continue;
                     }
@@ -98,7 +98,7 @@ impl EventHandler {
         }
         for keymap in &config.keymap {
             if let Some(actions) = keymap.remap.get(&key_press) {
-                if let Some(wm_class_matcher) = &keymap.wm_class {
+                if let Some(wm_class_matcher) = &keymap.application {
                     if !self.match_wm_class(wm_class_matcher) {
                         continue;
                     }
@@ -210,21 +210,21 @@ impl EventHandler {
         }
     }
 
-    fn match_wm_class(&mut self, wm_class_matcher: &WMClass) -> bool {
+    fn match_wm_class(&mut self, application_matcher: &Application) -> bool {
         // Lazily fill the wm_class cache
-        if let None = self.wm_class_cache {
-            match self.wm_client.current_wm_class() {
-                Some(wm_class) => self.wm_class_cache = Some(wm_class),
-                None => self.wm_class_cache = Some(String::new()),
+        if let None = self.application_cache {
+            match self.wm_client.current_application() {
+                Some(application) => self.application_cache = Some(application),
+                None => self.application_cache = Some(String::new()),
             }
         }
 
-        if let Some(wm_class) = &self.wm_class_cache {
-            if let Some(wm_class_only) = &wm_class_matcher.only {
-                return wm_class_only.contains(wm_class);
+        if let Some(application) = &self.application_cache {
+            if let Some(application_only) = &application_matcher.only {
+                return application_only.contains(application);
             }
-            if let Some(wm_class_not) = &wm_class_matcher.not {
-                return !wm_class_not.contains(wm_class);
+            if let Some(application_not) = &application_matcher.not {
+                return !application_not.contains(application);
             }
         }
         false