1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
/* 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 js::conversions::ToJSValConvertible;
use js::jsapi::Heap;
use js::jsval::{JSVal, UndefinedValue};
use webxr_api::{Handedness, InputId, InputSource, TargetRayMode};

use crate::dom::bindings::codegen::Bindings::XRInputSourceBinding::{
    XRHandedness, XRInputSourceMethods, XRTargetRayMode,
};
use crate::dom::bindings::reflector::{reflect_dom_object, DomObject, Reflector};
use crate::dom::bindings::root::{Dom, DomRoot, MutNullableDom};
use crate::dom::globalscope::GlobalScope;
use crate::dom::xrhand::XRHand;
use crate::dom::xrsession::XRSession;
use crate::dom::xrspace::XRSpace;
use crate::realms::enter_realm;
use crate::script_runtime::JSContext;

#[dom_struct]
pub struct XRInputSource {
    reflector: Reflector,
    session: Dom<XRSession>,
    #[ignore_malloc_size_of = "Defined in rust-webxr"]
    #[no_trace]
    info: InputSource,
    target_ray_space: MutNullableDom<XRSpace>,
    grip_space: MutNullableDom<XRSpace>,
    hand: MutNullableDom<XRHand>,
    #[ignore_malloc_size_of = "mozjs"]
    profiles: Heap<JSVal>,
}

impl XRInputSource {
    pub fn new_inherited(session: &XRSession, info: InputSource) -> XRInputSource {
        XRInputSource {
            reflector: Reflector::new(),
            session: Dom::from_ref(session),
            info,
            target_ray_space: Default::default(),
            grip_space: Default::default(),
            hand: Default::default(),
            profiles: Heap::default(),
        }
    }

    #[allow(unsafe_code)]
    pub fn new(
        global: &GlobalScope,
        session: &XRSession,
        info: InputSource,
    ) -> DomRoot<XRInputSource> {
        let source = reflect_dom_object(
            Box::new(XRInputSource::new_inherited(session, info)),
            global,
        );

        let _ac = enter_realm(global);
        let cx = GlobalScope::get_cx();
        unsafe {
            rooted!(in(*cx) let mut profiles = UndefinedValue());
            source.info.profiles.to_jsval(*cx, profiles.handle_mut());
            source.profiles.set(profiles.get());
        }
        source
    }

    pub fn id(&self) -> InputId {
        self.info.id
    }

    pub fn session(&self) -> &XRSession {
        &self.session
    }
}

impl XRInputSourceMethods for XRInputSource {
    /// <https://immersive-web.github.io/webxr/#dom-xrinputsource-handedness>
    fn Handedness(&self) -> XRHandedness {
        match self.info.handedness {
            Handedness::None => XRHandedness::None,
            Handedness::Left => XRHandedness::Left,
            Handedness::Right => XRHandedness::Right,
        }
    }

    /// <https://immersive-web.github.io/webxr/#dom-xrinputsource-targetraymode>
    fn TargetRayMode(&self) -> XRTargetRayMode {
        match self.info.target_ray_mode {
            TargetRayMode::Gaze => XRTargetRayMode::Gaze,
            TargetRayMode::TrackedPointer => XRTargetRayMode::Tracked_pointer,
            TargetRayMode::Screen => XRTargetRayMode::Screen,
        }
    }

    /// <https://immersive-web.github.io/webxr/#dom-xrinputsource-targetrayspace>
    fn TargetRaySpace(&self) -> DomRoot<XRSpace> {
        self.target_ray_space.or_init(|| {
            let global = self.global();
            XRSpace::new_inputspace(&global, &self.session, self, false)
        })
    }

    /// <https://immersive-web.github.io/webxr/#dom-xrinputsource-gripspace>
    fn GetGripSpace(&self) -> Option<DomRoot<XRSpace>> {
        if self.info.supports_grip {
            Some(self.grip_space.or_init(|| {
                let global = self.global();
                XRSpace::new_inputspace(&global, &self.session, self, true)
            }))
        } else {
            None
        }
    }
    // https://immersive-web.github.io/webxr/#dom-xrinputsource-profiles
    fn Profiles(&self, _cx: JSContext) -> JSVal {
        self.profiles.get()
    }

    // https://github.com/immersive-web/webxr-hands-input/blob/master/explainer.md
    fn GetHand(&self) -> Option<DomRoot<XRHand>> {
        self.info.hand_support.as_ref().map(|hand| {
            self.hand
                .or_init(|| XRHand::new(&self.global(), self, hand.clone()))
        })
    }
}