slint/api/node/rust/lib.rs

// Copyright © SixtyFPS GmbH <info@slint.dev>
// SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-Slint-Royalty-free-2.0 OR LicenseRef-Slint-Software-3.0

mod interpreter;
pub use interpreter::*;

mod types;
pub use types::*;

use napi::{Env, JsFunction};

#[macro_use]
extern crate napi_derive;

#[napi]
pub fn mock_elapsed_time(ms: f64) {
    i_slint_core::tests::slint_mock_elapsed_time(ms as _);
}

#[napi]
pub fn get_mocked_time() -> f64 {
    i_slint_core::tests::slint_get_mocked_time() as f64
}

#[napi]
pub enum ProcessEventsResult {
    Continue,
    Exited,
}

#[napi]
pub fn process_events() -> napi::Result<ProcessEventsResult> {
    i_slint_backend_selector::with_platform(|b| {
        b.process_events(std::time::Duration::ZERO, i_slint_core::InternalToken)
    })
    .map_err(|e| napi::Error::from_reason(e.to_string()))
    .and_then(|result| {
        Ok(match result {
            core::ops::ControlFlow::Continue(()) => ProcessEventsResult::Continue,
            core::ops::ControlFlow::Break(()) => ProcessEventsResult::Exited,
        })
    })
}

#[napi]
pub fn invoke_from_event_loop(env: Env, callback: JsFunction) -> napi::Result<napi::JsUndefined> {
    i_slint_backend_selector::with_platform(|_b| {
        // Nothing to do, just make sure a backend was created
        Ok(())
    })
    .map_err(|e| napi::Error::from_reason(e.to_string()))?;

    let function_ref = RefCountedReference::new(&env, callback)?;
    let function_ref = send_wrapper::SendWrapper::new(function_ref);
    i_slint_core::api::invoke_from_event_loop(move || {
        let function_ref = function_ref.take();
        let callback: JsFunction = function_ref.get().unwrap();
        callback.call_without_args(None).ok();
    })
    .map_err(|e| napi::Error::from_reason(e.to_string()))
    .and_then(|_| env.get_undefined())
}

#[napi]
pub fn set_quit_on_last_window_closed(
    env: Env,
    quit_on_last_window_closed: bool,
) -> napi::Result<napi::JsUndefined> {
    if !quit_on_last_window_closed {
        i_slint_backend_selector::with_platform(|b| {
            #[allow(deprecated)]
            b.set_event_loop_quit_on_last_window_closed(false);
            Ok(())
        })
        .map_err(|e| napi::Error::from_reason(e.to_string()))?;
    }
    env.get_undefined()
}

#[napi]
pub fn init_testing() {
    #[cfg(feature = "testing")]
    i_slint_backend_testing::init_integration_test_with_mock_time();
}