components/script/dom/activation.rs - main - githubmirror/servo

components/script/dom/activation.rs

50 строк2 KB

Tim van der Lippe

script: Move htmlinputelement into `script/dom/html/form_controls` (#46653)

20 июл 2026, 10:21

20 июл 2026, 10:219cf537f

/* 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 js::context::JSContext;

use crate::dom::element::Element;
use crate::dom::event::Event;
use crate::dom::eventtarget::EventTarget;
use crate::dom::html::form_controls::htmlinputelement::InputActivationState;

/// Trait for elements with defined activation behavior
pub(crate) trait Activatable {
    fn as_element(&self) -> &Element;

    // Is this particular instance of the element activatable?
    fn is_instance_activatable(&self) -> bool;

    /// <https://dom.spec.whatwg.org/#eventtarget-legacy-pre-activation-behavior>
    fn legacy_pre_activation_behavior(&self, _cx: &mut JSContext) -> Option<InputActivationState> {
        None
    }

    /// <https://dom.spec.whatwg.org/#eventtarget-legacy-canceled-activation-behavior>
    fn legacy_canceled_activation_behavior(
        &self,
        _cx: &mut JSContext,
        _state_before: Option<InputActivationState>,
    ) {
    }

    // https://dom.spec.whatwg.org/#eventtarget-activation-behavior
    // event and target are used only by HTMLAnchorElement, in the case
    // where the target is an <img ismap> so the href gets coordinates appended
    fn activation_behavior(
        &self,
        cx: &mut js::context::JSContext,
        event: &Event,
        target: &EventTarget,
    );

    /// <https://html.spec.whatwg.org/multipage/#concept-selector-active>
    fn enter_formal_activation_state(&self) {
        self.as_element().set_active_state(true);
    }

    fn exit_formal_activation_state(&self) {
        self.as_element().set_active_state(false);
    }
}