refactor: allow apps to request to be treated as a daemon

src/program.rs

@@ -191,6 +191,7 @@ pub trait Program: Sized {
                 default_text_size: settings.default_text_size,
                 antialiasing: settings.antialiasing,
                 exit_on_close_request: settings.exit_on_close_request,
+                is_daemon: settings.exit_on_close_request,
             }
             .into(),
             renderer_settings,

src/settings.rs

@@ -35,6 +35,9 @@ pub struct Settings {
 
     /// If set to true the application will exit when the main window is closed.
     pub exit_on_close_request: bool,
+
+    /// Whether the application is a daemon
+    pub is_daemon: bool,
 }
 
 impl Default for Settings {
@@ -46,6 +49,7 @@ impl Default for Settings {
             default_text_size: Pixels(14.0),
             antialiasing: false,
             exit_on_close_request: false,
+            is_daemon: false,
         }
     }
 }
@@ -56,6 +60,7 @@ impl From<Settings> for iced_winit::Settings {
         iced_winit::Settings {
             id: settings.id,
             fonts: settings.fonts,
+            is_daemon: settings.is_daemon,
         }
     }
 }

winit/src/program.rs

@@ -193,7 +193,7 @@ where
     };
 
     let (program, task) = runtime.enter(|| P::new(flags));
-    let is_daemon = window_settings.is_none();
+    let is_daemon = window_settings.is_none() || settings.is_daemon;
 
     let task = if let Some(window_settings) = window_settings {
         let mut task = Some(task);

winit/src/settings.rs

@@ -12,4 +12,7 @@ pub struct Settings {
 
     /// The fonts to load on boot.
     pub fonts: Vec<Cow<'static, [u8]>>,
+
+    /// Whether the application should exit when no windows are left
+    pub is_daemon: bool,
 }