ferroui-browser 0.3.0

The browser platform of FerroUI: a top-level in an element of a web page, rendered with WebGL or to a 2D canvas
Documentation 
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//! The boundary between the framework and the script module of the
//! platform.
//!
//! One file per group of functions, as the script module groups them. Each
//! holds the imports (functions of the script module, called from here) and
//! the exports (functions of the framework, called by the script module).
//! Objects of the page are opaque [`JsObject`] handles; nothing outside this
//! module and the render targets touches them except to pass them back.
//!
//! [`thread_proxy`] is the one file that is not about the script module: it
//! crosses from one thread of the module to another, and asks the script
//! only for what the runtime carried to the main thread.

pub mod canvas_helper;
pub mod completion_helper;
pub mod dom_helper;
pub mod ferro_module;
pub mod input_helper;
pub mod native_control_host_helper;
pub mod navigation_helper;
pub mod screen_helper;
pub mod storage_helper;
pub mod stream_helper;
pub mod thread_proxy;
pub mod timer_helper;

/// An object of the web page, held by the framework without looking inside.
pub type JsObject = wasm_bindgen::JsValue;

/// `value` unless it is `null` or `undefined`.
pub(crate) fn non_null(value: JsObject) -> Option<JsObject> {
    if value.is_null() || value.is_undefined() {
        None
    } else {
        Some(value)
    }
}