script/dom/event/
focusevent.rs

1/* This Source Code Form is subject to the terms of the Mozilla Public
2 * License, v. 2.0. If a copy of the MPL was not distributed with this
3 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
4
5use dom_struct::dom_struct;
6use js::context::JSContext;
7use js::rust::HandleObject;
8use script_bindings::reflector::reflect_dom_object_with_proto_and_cx;
9use style::Atom;
10
11use crate::dom::bindings::codegen::Bindings::FocusEventBinding;
12use crate::dom::bindings::codegen::Bindings::FocusEventBinding::FocusEventMethods;
13use crate::dom::bindings::codegen::Bindings::UIEventBinding::UIEventMethods;
14use crate::dom::bindings::error::Fallible;
15use crate::dom::bindings::inheritance::Castable;
16use crate::dom::bindings::root::DomRoot;
17use crate::dom::bindings::str::DOMString;
18use crate::dom::event::{Event, EventBubbles, EventCancelable};
19use crate::dom::eventtarget::EventTarget;
20use crate::dom::uievent::UIEvent;
21use crate::dom::window::Window;
22
23/// The type of a [`FocusEvent`].
24pub(crate) enum FocusEventType {
25    /// Element gained focus. Doesn't bubble.
26    Focus,
27    /// Element lost focus. Doesn't bubble.
28    Blur,
29}
30
31#[dom_struct]
32pub(crate) struct FocusEvent {
33    uievent: UIEvent,
34}
35
36impl FocusEvent {
37    fn new_inherited() -> FocusEvent {
38        FocusEvent {
39            uievent: UIEvent::new_inherited(),
40        }
41    }
42
43    pub(crate) fn new_uninitialized(cx: &mut JSContext, window: &Window) -> DomRoot<FocusEvent> {
44        Self::new_uninitialized_with_proto(cx, window, None)
45    }
46
47    pub(crate) fn new_uninitialized_with_proto(
48        cx: &mut JSContext,
49        window: &Window,
50        proto: Option<HandleObject>,
51    ) -> DomRoot<FocusEvent> {
52        reflect_dom_object_with_proto_and_cx(
53            Box::new(FocusEvent::new_inherited()),
54            window,
55            proto,
56            cx,
57        )
58    }
59
60    #[expect(clippy::too_many_arguments)]
61    pub(crate) fn new(
62        cx: &mut JSContext,
63        window: &Window,
64        event_type: Atom,
65        can_bubble: EventBubbles,
66        cancelable: EventCancelable,
67        view: Option<&Window>,
68        detail: i32,
69        related_target: Option<&EventTarget>,
70    ) -> DomRoot<FocusEvent> {
71        Self::new_with_proto(
72            cx,
73            window,
74            None,
75            event_type,
76            can_bubble,
77            cancelable,
78            view,
79            detail,
80            related_target,
81        )
82    }
83
84    #[expect(clippy::too_many_arguments)]
85    fn new_with_proto(
86        cx: &mut JSContext,
87        window: &Window,
88        proto: Option<HandleObject>,
89        event_type: Atom,
90        can_bubble: EventBubbles,
91        cancelable: EventCancelable,
92        view: Option<&Window>,
93        detail: i32,
94        related_target: Option<&EventTarget>,
95    ) -> DomRoot<FocusEvent> {
96        let ev = FocusEvent::new_uninitialized_with_proto(cx, window, proto);
97        ev.upcast::<UIEvent>().init_event(
98            event_type,
99            bool::from(can_bubble),
100            bool::from(cancelable),
101            view,
102            detail,
103        );
104        ev.upcast::<Event>().set_related_target(related_target);
105        ev
106    }
107}
108
109impl FocusEventMethods<crate::DomTypeHolder> for FocusEvent {
110    /// <https://w3c.github.io/uievents/#dom-focusevent-focusevent>
111    fn Constructor(
112        cx: &mut JSContext,
113        window: &Window,
114        proto: Option<HandleObject>,
115        event_type: DOMString,
116        init: &FocusEventBinding::FocusEventInit,
117    ) -> Fallible<DomRoot<FocusEvent>> {
118        let bubbles = EventBubbles::from(init.parent.parent.bubbles);
119        let cancelable = EventCancelable::from(init.parent.parent.cancelable);
120        let event = FocusEvent::new_with_proto(
121            cx,
122            window,
123            proto,
124            event_type.into(),
125            bubbles,
126            cancelable,
127            init.parent.view.as_deref(),
128            init.parent.detail,
129            init.relatedTarget.as_deref(),
130        );
131        event
132            .upcast::<Event>()
133            .set_composed(init.parent.parent.composed);
134        Ok(event)
135    }
136
137    /// <https://w3c.github.io/uievents/#widl-FocusEvent-relatedTarget>
138    fn GetRelatedTarget(&self) -> Option<DomRoot<EventTarget>> {
139        self.upcast::<Event>().related_target()
140    }
141
142    /// <https://dom.spec.whatwg.org/#dom-event-istrusted>
143    fn IsTrusted(&self) -> bool {
144        self.uievent.IsTrusted()
145    }
146}
script/dom/event/focusevent.rs

script/dom/event/
focusevent.rs
