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use std::rc::Rc;
use web_sys::Node;
use yew::{prelude::*, TargetCast};
use super::{use_event_with_window, use_latest};
/// A hook that triggers a callback when user clicks outside the target element.
///
/// # Example
///
/// ```rust
/// # use yew::prelude::*;
/// # use log::debug;
/// #
/// use yew_hooks::prelude::*;
///
/// #[function_component(UseClickAway)]
/// fn click_away() -> Html {
/// let node = use_node_ref();
///
/// use_click_away(node.clone(), move |_: Event| {
/// debug!("Clicked outside!");
/// });
///
/// html! {
/// <div ref={node}>
/// { "Try to click outside of this area." }
/// </div>
/// }
/// }
/// ```
#[hook]
pub fn use_click_away<F>(node: NodeRef, callback: F)
where
F: Fn(Event) + 'static,
{
let callback_ref = use_latest(callback);
let handler = Rc::new(move |e: Event| {
if let Some(node) = &node.get() {
if let Some(target_node) = e.target_dyn_into::<Node>() {
if !node.contains(Some(&target_node)) {
(*callback_ref.current())(e);
}
}
}
});
{
let handler = handler.clone();
use_event_with_window("mousedown", move |e: Event| {
handler(e);
});
}
use_event_with_window("touchstart", move |e: Event| {
handler(e);
});
}