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/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */

use dom_struct::dom_struct;
use html5ever::{LocalName, Prefix};
use js::rust::HandleObject;

use crate::dom::bindings::inheritance::Castable;
use crate::dom::bindings::root::DomRoot;
use crate::dom::document::Document;
use crate::dom::htmlareaelement::HTMLAreaElement;
use crate::dom::htmlelement::HTMLElement;
use crate::dom::node::{Node, ShadowIncluding};
use crate::script_runtime::CanGc;

#[dom_struct]
pub struct HTMLMapElement {
    htmlelement: HTMLElement,
}

impl HTMLMapElement {
    fn new_inherited(
        local_name: LocalName,
        prefix: Option<Prefix>,
        document: &Document,
    ) -> HTMLMapElement {
        HTMLMapElement {
            htmlelement: HTMLElement::new_inherited(local_name, prefix, document),
        }
    }

    #[allow(crown::unrooted_must_root)]
    pub fn new(
        local_name: LocalName,
        prefix: Option<Prefix>,
        document: &Document,
        proto: Option<HandleObject>,
        can_gc: CanGc,
    ) -> DomRoot<HTMLMapElement> {
        Node::reflect_node_with_proto(
            Box::new(HTMLMapElement::new_inherited(local_name, prefix, document)),
            document,
            proto,
            can_gc,
        )
    }

    pub fn get_area_elements(&self) -> Vec<DomRoot<HTMLAreaElement>> {
        self.upcast::<Node>()
            .traverse_preorder(ShadowIncluding::No)
            .filter_map(DomRoot::downcast::<HTMLAreaElement>)
            .collect()
    }
}