Set window title on Wayland

Fixes #1582.
Fixes #1875.

3 files changed, 32 insertions, 52 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 01208769..cd7ab1de 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- Window class on Wayland is set to `Alacritty` by default
+
 ### Changed
 
 - Improve scrolling accuracy with devices sending fractional updates (like touchpads)
diff --git a/src/cli.rs b/src/cli.rs
index af8346f9..1d16b6bc 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -16,7 +16,7 @@ use clap::{Arg, App, crate_name, crate_version, crate_authors, crate_description
 
 use crate::index::{Line, Column};
 use crate::config::{Dimensions, Shell};
-use crate::window::{DEFAULT_TITLE, DEFAULT_CLASS};
+use crate::window::{DEFAULT_NAME};
 use std::path::{Path, PathBuf};
 use std::borrow::Cow;
 
@@ -87,11 +87,11 @@ impl Options {
                 .long("title")
                 .short("t")
                 .takes_value(true)
-                .help(&format!("Defines the window title [default: {}]", DEFAULT_TITLE)))
+                .help(&format!("Defines the window title [default: {}]", DEFAULT_NAME)))
             .arg(Arg::with_name("class")
                  .long("class")
                  .takes_value(true)
-                 .help(&format!("Defines window class on X11 [default: {}]", DEFAULT_CLASS)))
+                 .help(&format!("Defines window class on X11 [default: {}]", DEFAULT_NAME)))
             .arg(Arg::with_name("q")
                 .short("q")
                 .multiple(true)
diff --git a/src/window.rs b/src/window.rs
index 0f401528..cdc3bdc7 100644
--- a/src/window.rs
+++ b/src/window.rs
@@ -33,22 +33,8 @@ use crate::MouseCursor;
 #[cfg(windows)]
 static WINDOW_ICON: &'static [u8] = include_bytes!("../assets/windows/alacritty.ico");
 
-/// Default text for the window's title bar, if not overriden.
-///
-/// In X11, this the default value for the `WM_NAME` property.
-pub const DEFAULT_TITLE: &str = "Alacritty";
-
-/// Default text for general window class, X11 specific.
-///
-/// In X11, this is the default value for the `WM_CLASS` property. The
-/// second value of `WM_CLASS` is **never** changed to anything but
-/// the default value.
-///
-/// ```ignore
-/// $ xprop | grep WM_CLASS
-/// WM_CLASS(STRING) = "Alacritty", "Alacritty"
-/// ```
-pub const DEFAULT_CLASS: &str = "Alacritty";
+/// Default Alacritty name, used for window title and class.
+pub const DEFAULT_NAME: &str = "Alacritty";
 
 /// Window errors
 #[derive(Debug)]
@@ -148,10 +134,9 @@ impl Window {
     pub fn new(options: &Options, window_config: &WindowConfig) -> Result<Window> {
         let event_loop = EventsLoop::new();
 
-        let title = options.title.as_ref().map_or(DEFAULT_TITLE, |t| t);
-        let class = options.class.as_ref().map_or(DEFAULT_TITLE, |c| c);
-        let window_builder = Window::get_platform_window(title, window_config);
-        let window_builder = Window::platform_builder_ext(window_builder, &class);
+        let title = options.title.as_ref().map_or(DEFAULT_NAME, |t| t);
+        let class = options.class.as_ref().map_or(DEFAULT_NAME, |c| c);
+        let window_builder = Window::get_platform_window(title, class, window_config);
         let window = create_gl_window(window_builder.clone(), &event_loop, false)
             .or_else(|_| create_gl_window(window_builder, &event_loop, true))?;
         window.show();
@@ -262,35 +247,14 @@ impl Window {
         }
     }
 
-    #[cfg(
-        any(
-            target_os = "linux",
-            target_os = "freebsd",
-            target_os = "dragonfly",
-            target_os = "openbsd"
-        )
-    )]
-    fn platform_builder_ext(window_builder: WindowBuilder, wm_class: &str) -> WindowBuilder {
+    #[cfg(not(any(target_os = "macos", windows)))]
+    pub fn get_platform_window(
+        title: &str,
+        class: &str,
+        window_config: &WindowConfig
+    ) -> WindowBuilder {
         use glutin::os::unix::WindowBuilderExt;
-        window_builder.with_class(wm_class.to_owned(), "Alacritty".to_owned())
-    }
-
-    #[cfg(
-        not(
-            any(
-                target_os = "linux",
-                target_os = "freebsd",
-                target_os = "dragonfly",
-                target_os = "openbsd"
-            )
-        )
-    )]
-    fn platform_builder_ext(window_builder: WindowBuilder, _: &str) -> WindowBuilder {
-        window_builder
-    }
 
-    #[cfg(not(any(target_os = "macos", windows)))]
-    pub fn get_platform_window(title: &str, window_config: &WindowConfig) -> WindowBuilder {
         let decorations = match window_config.decorations() {
             Decorations::None => false,
             _ => true,
@@ -302,10 +266,18 @@ impl Window {
             .with_transparency(true)
             .with_maximized(window_config.start_maximized())
             .with_decorations(decorations)
+            // X11
+            .with_class(class.into(), DEFAULT_NAME.into())
+            // Wayland
+            .with_app_id(class.into())
     }
 
     #[cfg(windows)]
-    pub fn get_platform_window(title: &str, window_config: &WindowConfig) -> WindowBuilder {
+    pub fn get_platform_window(
+        title: &str,
+        _class: &str,
+        window_config: &WindowConfig
+    ) -> WindowBuilder {
         let icon = Icon::from_bytes_with_format(WINDOW_ICON, ImageFormat::ICO).unwrap();
 
         let decorations = match window_config.decorations() {
@@ -323,7 +295,11 @@ impl Window {
     }
 
     #[cfg(target_os = "macos")]
-    pub fn get_platform_window(title: &str, window_config: &WindowConfig) -> WindowBuilder {
+    pub fn get_platform_window(
+        title: &str,
+        _class: &str,
+        window_config: &WindowConfig
+    ) -> WindowBuilder {
         use glutin::os::macos::WindowBuilderExt;
 
         let window = WindowBuilder::new()