80 lines
2.1 KiB
Rust
80 lines
2.1 KiB
Rust
// Copyright 2025 System76 <info@system76.com>
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// SPDX-License-Identifier: MPL-2.0
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//! Application API example
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use cosmic::app::{Core, Settings, Task};
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use cosmic::iced::Subscription;
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use cosmic::{executor, prelude::*, widget};
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/// Runs application with these settings
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fn main() -> Result<(), Box<dyn std::error::Error>> {
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cosmic::app::run::<App>(Settings::default(), ())?;
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Ok(())
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}
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/// Messages that are used specifically by our [`App`].
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#[derive(Clone, Debug)]
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pub enum Message {}
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/// The [`App`] stores application-specific state.
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pub struct App {
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core: Core,
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}
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/// Implement [`cosmic::Application`] to integrate with COSMIC.
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impl cosmic::Application for App {
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/// Default async executor to use with the app.
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type Executor = executor::Default;
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/// Argument received [`cosmic::Application::new`].
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type Flags = ();
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/// Message type specific to our [`App`].
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type Message = Message;
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/// The unique application ID to supply to the window manager.
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const APP_ID: &'static str = "org.cosmic.TextInputsDemo";
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fn core(&self) -> &Core {
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&self.core
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}
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fn core_mut(&mut self) -> &mut Core {
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&mut self.core
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}
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/// Creates the application, and optionally emits task on initialize.
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fn init(core: Core, _input: Self::Flags) -> (Self, Task<Self::Message>) {
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let mut app = App { core };
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let commands = Task::batch(vec![app.update_title()]);
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(app, commands)
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}
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fn subscription(&self) -> Subscription<Self::Message> {
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Subscription::none()
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}
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/// Handle application events here.
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fn update(&mut self, message: Self::Message) -> Task<Self::Message> {
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Task::none()
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}
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/// Creates a view after each update.
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fn view(&self) -> Element<'_, Self::Message> {
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widget::Row::new().into()
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}
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}
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impl App
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where
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Self: cosmic::Application,
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{
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fn update_title(&mut self) -> Task<Message> {
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let window_title = format!("COSMIC Subscriptions Demo");
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self.set_header_title(window_title.clone());
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self.set_window_title(window_title, self.core.main_window_id().unwrap())
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}
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}
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