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};
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(cx, Box::new(XRInputSourceArray::new_inherited()), window)
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
62                .safe_borrow_mut(cx.no_gc())
63                .push(Dom::from_ref(&input));
64            added.push(input);
65        }
66
67        let event = XRInputSourcesChangeEvent::new(
68            cx,
69            window,
70            atom!("inputsourceschange"),
71            false,
72            true,
73            session,
74            &added,
75            &[],
76        );
77        event.upcast::<Event>().fire(cx, session.upcast());
78    }
79
80    pub(crate) fn remove_input_source(&self, cx: &mut JSContext, session: &XRSession, id: InputId) {
81        let global = self.global();
82        let window = global.as_window();
83        let removed = if let Some(i) = self.input_sources.borrow().iter().find(|i| i.id() == id) {
84            i.gamepad().update_connected(false);
85            [DomRoot::from_ref(&**i)]
86        } else {
87            return;
88        };
89
90        let event = XRInputSourcesChangeEvent::new(
91            cx,
92            window,
93            atom!("inputsourceschange"),
94            false,
95            true,
96            session,
97            &[],
98            &removed,
99        );
100        self.input_sources
101            .safe_borrow_mut(cx.no_gc())
102            .retain(|i| i.id() != id);
103        event.upcast::<Event>().fire(cx, session.upcast());
104    }
105
106    pub(crate) fn add_remove_input_source(
107        &self,
108        cx: &mut JSContext,
109        session: &XRSession,
110        id: InputId,
111        info: InputSource,
112    ) {
113        let global = self.global();
114        let window = global.as_window();
115        let root;
116        let removed = if let Some(i) = self.input_sources.borrow().iter().find(|i| i.id() == id) {
117            i.gamepad().update_connected(false);
118            root = [DomRoot::from_ref(&**i)];
119            &root as &[_]
120        } else {
121            warn!("Could not find removed input source with id {:?}", id);
122            &[]
123        };
124        self.input_sources
125            .safe_borrow_mut(cx.no_gc())
126            .retain(|i| i.id() != id);
127        let input = XRInputSource::new(cx, window, session, info);
128        self.input_sources
129            .safe_borrow_mut(cx.no_gc())
130            .push(Dom::from_ref(&input));
131
132        let added = [input];
133
134        let event = XRInputSourcesChangeEvent::new(
135            cx,
136            window,
137            atom!("inputsourceschange"),
138            false,
139            true,
140            session,
141            &added,
142            removed,
143        );
144        event.upcast::<Event>().fire(cx, session.upcast());
145    }
146
147    pub(crate) fn find(&self, id: InputId) -> Option<DomRoot<XRInputSource>> {
148        self.input_sources
149            .borrow()
150            .iter()
151            .find(|x| x.id() == id)
152            .map(|x| DomRoot::from_ref(&**x))
153    }
154}
155
156impl XRInputSourceArrayMethods<crate::DomTypeHolder> for XRInputSourceArray {
157    /// <https://immersive-web.github.io/webxr/#dom-xrinputsourcearray-length>
158    fn Length(&self) -> u32 {
159        self.input_sources.borrow().len() as u32
160    }
161
162    /// <https://immersive-web.github.io/webxr/#xrinputsourcearray>
163    fn IndexedGetter(&self, n: u32) -> Option<DomRoot<XRInputSource>> {
164        self.input_sources
165            .borrow()
166            .get(n as usize)
167            .map(|x| DomRoot::from_ref(&**x))
168    }
169}
script/dom/webxr/xrinputsourcearray.rs

script/dom/webxr/
xrinputsourcearray.rs
