Always trigger an input sources change event on session creation

This commit is contained in:
Manish Goregaokar 2020-02-15 00:42:38 -08:00
parent 5f55cd5d71
commit 09a23b0cb1
3 changed files with 47 additions and 24 deletions

View file

@ -136,7 +136,6 @@ impl XRSession {
global,
XRSessionBinding::Wrap,
);
input_sources.set_initial_inputs(&ret);
ret.attach_event_handler();
ret.setup_raf_loop(frame_receiver);
ret
@ -208,6 +207,36 @@ impl XRSession {
self.session.borrow_mut().set_event_dest(sender);
}
// Must be called after the promise for session creation is resolved
// https://github.com/immersive-web/webxr/issues/961
//
// This enables content that assumes all input sources are accompanied
// by an inputsourceschange event to work properly. Without
pub fn setup_initial_inputs(&self) {
let initial_inputs = self.session.borrow().initial_inputs().to_owned();
if initial_inputs.is_empty() {
// do not fire an empty event
return;
}
let global = self.global();
let window = global.as_window();
let (task_source, canceller) = window
.task_manager()
.dom_manipulation_task_source_with_canceller();
let this = Trusted::new(self);
// Queue a task so that it runs after resolve()'s microtasks complete
// so that content has a chance to attach a listener for inputsourceschange
let _ = task_source.queue_with_canceller(
task!(session_initial_inputs: move || {
let this = this.root();
this.input_sources.add_input_sources(&this, &initial_inputs);
}),
&canceller,
);
}
fn event_callback(&self, event: XREvent) {
match event {
XREvent::SessionEnd => {
@ -290,7 +319,7 @@ impl XRSession {
event.upcast::<Event>().fire(self.upcast());
},
XREvent::AddInput(info) => {
self.input_sources.add_input_source(self, info);
self.input_sources.add_input_sources(self, &[info]);
},
XREvent::RemoveInput(id) => {
self.input_sources.remove_input_source(self, id);