script/dom/webxr/
xrinputsourcearray.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 script_bindings::cell::DomRefCell;
8use script_bindings::reflector::{Reflector, reflect_dom_object_with_cx};
9use webxr_api::{InputId, InputSource};
10
11use crate::dom::bindings::codegen::Bindings::XRInputSourceArrayBinding::XRInputSourceArrayMethods;
12use crate::dom::bindings::inheritance::Castable;
13use crate::dom::bindings::reflector::DomGlobal;
14use crate::dom::bindings::root::{Dom, DomRoot};
15use crate::dom::event::Event;
16use crate::dom::window::Window;
17use crate::dom::xrinputsource::XRInputSource;
18use crate::dom::xrinputsourceschangeevent::XRInputSourcesChangeEvent;
19use crate::dom::xrsession::XRSession;
20
21#[dom_struct]
22pub(crate) struct XRInputSourceArray {
23    reflector_: Reflector,
24    input_sources: DomRefCell<Vec<Dom<XRInputSource>>>,
25}
26
27impl XRInputSourceArray {
28    fn new_inherited() -> XRInputSourceArray {
29        XRInputSourceArray {
30            reflector_: Reflector::new(),
31            input_sources: DomRefCell::new(vec![]),
32        }
33    }
34
35    pub(crate) fn new(cx: &mut JSContext, window: &Window) -> DomRoot<XRInputSourceArray> {
36        reflect_dom_object_with_cx(Box::new(XRInputSourceArray::new_inherited()), window, cx)
37    }
38
39    pub(crate) fn add_input_sources(
40        &self,
41        cx: &mut JSContext,
42        session: &XRSession,
43        inputs: &[InputSource],
44    ) {
45        let global = self.global();
46        let window = global.as_window();
47
48        let mut added = vec![];
49        for info in inputs {
50            // This is quadratic, but won't be a problem for the only case
51            // where we add multiple input sources (the initial input sources case)
52            debug_assert!(
53                !self
54                    .input_sources
55                    .borrow()
56                    .iter()
57                    .any(|i| i.id() == info.id),
58                "Should never add a duplicate input id!"
59            );
60            let input = XRInputSource::new(cx, window, session, info.clone());
61            self.input_sources.borrow_mut().push(Dom::from_ref(&input));
62            added.push(input);
63        }
64
65        let event = XRInputSourcesChangeEvent::new(
66            cx,
67            window,
68            atom!("inputsourceschange"),
69            false,
70            true,
71            session,
72            &added,
73            &[],
74        );
75        event.upcast::<Event>().fire(cx, session.upcast());
76    }
77
78    pub(crate) fn remove_input_source(&self, cx: &mut JSContext, session: &XRSession, id: InputId) {
79        let global = self.global();
80        let window = global.as_window();
81        let removed = if let Some(i) = self.input_sources.borrow().iter().find(|i| i.id() == id) {
82            i.gamepad().update_connected(false);
83            [DomRoot::from_ref(&**i)]
84        } else {
85            return;
86        };
87
88        let event = XRInputSourcesChangeEvent::new(
89            cx,
90            window,
91            atom!("inputsourceschange"),
92            false,
93            true,
94            session,
95            &[],
96            &removed,
97        );
98        self.input_sources.borrow_mut().retain(|i| i.id() != id);
99        event.upcast::<Event>().fire(cx, session.upcast());
100    }
101
102    pub(crate) fn add_remove_input_source(
103        &self,
104        cx: &mut JSContext,
105        session: &XRSession,
106        id: InputId,
107        info: InputSource,
108    ) {
109        let global = self.global();
110        let window = global.as_window();
111        let root;
112        let removed = if let Some(i) = self.input_sources.borrow().iter().find(|i| i.id() == id) {
113            i.gamepad().update_connected(false);
114            root = [DomRoot::from_ref(&**i)];
115            &root as &[_]
116        } else {
117            warn!("Could not find removed input source with id {:?}", id);
118            &[]
119        };
120        self.input_sources.borrow_mut().retain(|i| i.id() != id);
121        let input = XRInputSource::new(cx, window, session, info);
122        self.input_sources.borrow_mut().push(Dom::from_ref(&input));
123
124        let added = [input];
125
126        let event = XRInputSourcesChangeEvent::new(
127            cx,
128            window,
129            atom!("inputsourceschange"),
130            false,
131            true,
132            session,
133            &added,
134            removed,
135        );
136        event.upcast::<Event>().fire(cx, session.upcast());
137    }
138
139    pub(crate) fn find(&self, id: InputId) -> Option<DomRoot<XRInputSource>> {
140        self.input_sources
141            .borrow()
142            .iter()
143            .find(|x| x.id() == id)
144            .map(|x| DomRoot::from_ref(&**x))
145    }
146}
147
148impl XRInputSourceArrayMethods<crate::DomTypeHolder> for XRInputSourceArray {
149    /// <https://immersive-web.github.io/webxr/#dom-xrinputsourcearray-length>
150    fn Length(&self) -> u32 {
151        self.input_sources.borrow().len() as u32
152    }
153
154    /// <https://immersive-web.github.io/webxr/#xrinputsourcearray>
155    fn IndexedGetter(&self, n: u32) -> Option<DomRoot<XRInputSource>> {
156        self.input_sources
157            .borrow()
158            .get(n as usize)
159            .map(|x| DomRoot::from_ref(&**x))
160    }
161}
script/dom/webxr/xrinputsourcearray.rs

script/dom/webxr/
xrinputsourcearray.rs
