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//! Display interactive elements on top of other widgets.
use crate::widget::Tree;
use iced_native::Layout;
pub use iced_native::overlay::*;
/// Obtains the first overlay [`Element`] found in the given children.
///
/// This method will generally only be used by advanced users that are
/// implementing the [`Widget`](crate::Widget) trait.
pub fn from_children<'a, Message, Renderer>(
children: &'a [crate::Element<'_, Message, Renderer>],
tree: &'a mut Tree,
layout: Layout<'_>,
renderer: &Renderer,
) -> Option<Element<'a, Message, Renderer>> {
children
.iter()
.zip(&mut tree.children)
.zip(layout.children())
.filter_map(|((child, state), layout)| {
child.as_widget().overlay(state, layout, renderer)
})
.next()
}
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