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script: Move TaskManager to GlobalScope (#34827)
This is a simplification of the internal `TaskQueue` API that moves the `TaskManager` to the `GlobalScope` itself. In addition, the handling of cancellers is moved to the `TaskManager` as well. This means that no arguments other than the `task` are necessary for queueing tasks, which makes the API a lot easier to use and cleaner. `TaskSource` now also keeps a copy of the canceller with it, so that they always know the proper way to cancel any tasks queued on them. There is one complication here. The event loop `sender` for dedicated workers is constantly changing as it is set to `None` when not handling messages. This is because this sender keeps a handle to the main thread's `Worker` object, preventing garbage collection while any messages are still in flight or being handled. This change allows setting the `sender` on the `TaskManager` to `None` to allow proper garbabge collection. Signed-off-by: Martin Robinson <mrobinson@igalia.com>
This commit is contained in:
Martin Robinson
GitHub
parent
75a22cfe2e
commit
b2eda71952
54 changed files with 1060 additions and 1516 deletions
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@ -523,11 +523,10 @@ impl HTMLMediaElement {
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fn time_marches_on(&self) {
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// Step 6.
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if Instant::now() > self.next_timeupdate_event.get() {
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let window = self.owner_window();
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window
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self.owner_window()
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.task_manager()
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.media_element_task_source()
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.queue_simple_event(self.upcast(), atom!("timeupdate"), &window);
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.queue_simple_event(self.upcast(), atom!("timeupdate"));
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self.next_timeupdate_event
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.set(Instant::now() + Duration::from_millis(350));
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}
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@ -547,11 +546,13 @@ impl HTMLMediaElement {
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self.take_pending_play_promises(Err(Error::Abort));
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// Step 2.3.
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let window = self.owner_window();
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let this = Trusted::new(self);
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let generation_id = self.generation_id.get();
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let _ = window.task_manager().media_element_task_source().queue(
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task!(internal_pause_steps: move || {
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let _ = self
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.owner_window()
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.task_manager()
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.media_element_task_source()
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.queue(task!(internal_pause_steps: move || {
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let this = this.root();
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if generation_id != this.generation_id.get() {
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return;
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@ -574,9 +575,7 @@ impl HTMLMediaElement {
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// Done after running this closure in
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// `fulfill_in_flight_play_promises`.
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});
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}),
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window.upcast(),
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);
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}));
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// Step 2.4.
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// FIXME(nox): Set the official playback position to the current
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@ -594,12 +593,14 @@ impl HTMLMediaElement {
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self.take_pending_play_promises(Ok(()));
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// Step 2.
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let window = self.owner_window();
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let this = Trusted::new(self);
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let generation_id = self.generation_id.get();
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// FIXME(nox): Why are errors silenced here?
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let _ = window.task_manager().media_element_task_source().queue(
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task!(notify_about_playing: move || {
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let _ = self
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.owner_window()
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.task_manager()
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.media_element_task_source()
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.queue(task!(notify_about_playing: move || {
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let this = this.root();
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if generation_id != this.generation_id.get() {
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return;
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@ -615,9 +616,7 @@ impl HTMLMediaElement {
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// `fulfill_in_flight_play_promises`.
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});
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}),
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window.upcast(),
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);
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}));
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}
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// https://html.spec.whatwg.org/multipage/#ready-states
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@ -633,13 +632,15 @@ impl HTMLMediaElement {
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return;
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}
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let window = self.owner_window();
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let task_source = window.task_manager().media_element_task_source();
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let task_source = self
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.owner_window()
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.task_manager()
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.media_element_task_source();
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// Step 1.
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match (old_ready_state, ready_state) {
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(ReadyState::HaveNothing, ReadyState::HaveMetadata) => {
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task_source.queue_simple_event(self.upcast(), atom!("loadedmetadata"), &window);
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task_source.queue_simple_event(self.upcast(), atom!("loadedmetadata"));
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// No other steps are applicable in this case.
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return;
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},
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@ -648,14 +649,11 @@ impl HTMLMediaElement {
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self.fired_loadeddata_event.set(true);
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let this = Trusted::new(self);
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// FIXME(nox): Why are errors silenced here?
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let _ = task_source.queue(
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task!(media_reached_current_data: move || {
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let this = this.root();
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this.upcast::<EventTarget>().fire_event(atom!("loadeddata"), CanGc::note());
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this.delay_load_event(false, CanGc::note());
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}),
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window.upcast(),
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);
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let _ = task_source.queue(task!(media_reached_current_data: move || {
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let this = this.root();
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this.upcast::<EventTarget>().fire_event(atom!("loadeddata"), CanGc::note());
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this.delay_load_event(false, CanGc::note());
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}));
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}
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// Steps for the transition from HaveMetadata to HaveCurrentData
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@ -676,7 +674,7 @@ impl HTMLMediaElement {
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if old_ready_state <= ReadyState::HaveCurrentData &&
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ready_state >= ReadyState::HaveFutureData
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{
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task_source.queue_simple_event(self.upcast(), atom!("canplay"), &window);
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task_source.queue_simple_event(self.upcast(), atom!("canplay"));
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if !self.Paused() {
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self.notify_about_playing();
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@ -697,7 +695,7 @@ impl HTMLMediaElement {
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self.time_marches_on();
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}
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// Step 3
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task_source.queue_simple_event(self.upcast(), atom!("play"), &window);
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task_source.queue_simple_event(self.upcast(), atom!("play"));
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// Step 4
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self.notify_about_playing();
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// Step 5
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@ -706,7 +704,7 @@ impl HTMLMediaElement {
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// FIXME(nox): According to the spec, this should come *before* the
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// "play" event.
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task_source.queue_simple_event(self.upcast(), atom!("canplaythrough"), &window);
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task_source.queue_simple_event(self.upcast(), atom!("canplaythrough"));
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}
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}
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@ -787,11 +785,10 @@ impl HTMLMediaElement {
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self.network_state.set(NetworkState::Loading);
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// Step 8.
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let window = self.owner_window();
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window
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self.owner_window()
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.task_manager()
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.media_element_task_source()
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.queue_simple_event(self.upcast(), atom!("loadstart"), &window);
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.queue_simple_event(self.upcast(), atom!("loadstart"));
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// Step 9.
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match mode {
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@ -941,19 +938,16 @@ impl HTMLMediaElement {
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window
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.task_manager()
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.media_element_task_source()
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.queue_simple_event(self.upcast(), atom!("suspend"), &window);
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.queue_simple_event(self.upcast(), atom!("suspend"));
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// Step 4.remote.1.3.
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let this = Trusted::new(self);
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window
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.task_manager()
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.media_element_task_source()
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.queue(
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task!(set_media_delay_load_event_flag_to_false: move || {
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this.root().delay_load_event(false, CanGc::note());
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}),
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window.upcast(),
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)
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.queue(task!(set_media_delay_load_event_flag_to_false: move || {
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this.root().delay_load_event(false, CanGc::note());
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}))
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.unwrap();
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// Steps 4.remote.1.4.
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@ -1007,13 +1001,15 @@ impl HTMLMediaElement {
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///
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/// [steps]: https://html.spec.whatwg.org/multipage/#dedicated-media-source-failure-steps
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fn queue_dedicated_media_source_failure_steps(&self) {
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let window = self.owner_window();
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let this = Trusted::new(self);
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let generation_id = self.generation_id.get();
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self.take_pending_play_promises(Err(Error::NotSupported));
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// FIXME(nox): Why are errors silenced here?
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let _ = window.task_manager().media_element_task_source().queue(
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task!(dedicated_media_source_failure_steps: move || {
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let _ = self
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.owner_window()
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.task_manager()
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.media_element_task_source()
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.queue(task!(dedicated_media_source_failure_steps: move || {
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let this = this.root();
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if generation_id != this.generation_id.get() {
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return;
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@ -1052,15 +1048,14 @@ impl HTMLMediaElement {
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// Step 7.
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this.delay_load_event(false, CanGc::note());
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}),
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window.upcast(),
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);
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}));
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}
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fn queue_ratechange_event(&self) {
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let window = self.owner_window();
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let task_source = window.task_manager().media_element_task_source();
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task_source.queue_simple_event(self.upcast(), atom!("ratechange"), &window);
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self.owner_window()
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.task_manager()
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.media_element_task_source()
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.queue_simple_event(self.upcast(), atom!("ratechange"));
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}
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fn in_error_state(&self) -> bool {
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@ -1110,19 +1105,21 @@ impl HTMLMediaElement {
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self.fulfill_in_flight_play_promises(|| ());
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}
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let window = self.owner_window();
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let task_source = window.task_manager().media_element_task_source();
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let task_source = self
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.owner_window()
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.task_manager()
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.media_element_task_source();
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// Step 5.
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let network_state = self.network_state.get();
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if network_state == NetworkState::Loading || network_state == NetworkState::Idle {
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task_source.queue_simple_event(self.upcast(), atom!("abort"), &window);
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task_source.queue_simple_event(self.upcast(), atom!("abort"));
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}
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// Step 6.
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if network_state != NetworkState::Empty {
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// Step 6.1.
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task_source.queue_simple_event(self.upcast(), atom!("emptied"), &window);
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task_source.queue_simple_event(self.upcast(), atom!("emptied"));
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// Step 6.2.
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if let Some(ref mut current_fetch_context) = *self.current_fetch_context.borrow_mut() {
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@ -1160,7 +1157,7 @@ impl HTMLMediaElement {
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let queue_timeupdate_event = self.playback_position.get() != 0.;
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self.playback_position.set(0.);
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if queue_timeupdate_event {
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task_source.queue_simple_event(self.upcast(), atom!("timeupdate"), &window);
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task_source.queue_simple_event(self.upcast(), atom!("timeupdate"));
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}
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// Step 6.9.
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@ -1291,9 +1288,10 @@ impl HTMLMediaElement {
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// servo-media with gstreamer does not support inaccurate seeking for now.
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// Step 10.
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let window = self.owner_window();
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let task_source = window.task_manager().media_element_task_source();
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task_source.queue_simple_event(self.upcast(), atom!("seeking"), &window);
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self.owner_window()
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.task_manager()
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.media_element_task_source()
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.queue_simple_event(self.upcast(), atom!("seeking"));
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// Step 11.
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if let Some(ref player) = *self.player.borrow() {
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@ -1316,12 +1314,14 @@ impl HTMLMediaElement {
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self.time_marches_on();
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// Step 16.
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let window = self.owner_window();
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let task_source = window.task_manager().media_element_task_source();
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task_source.queue_simple_event(self.upcast(), atom!("timeupdate"), &window);
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let task_source = self
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.owner_window()
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.task_manager()
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.media_element_task_source();
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task_source.queue_simple_event(self.upcast(), atom!("timeupdate"));
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// Step 17.
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task_source.queue_simple_event(self.upcast(), atom!("seeked"), &window);
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task_source.queue_simple_event(self.upcast(), atom!("seeked"));
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}
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/// <https://html.spec.whatwg.org/multipage/#poster-frame>
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@ -1339,9 +1339,10 @@ impl HTMLMediaElement {
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self.upcast::<Node>().dirty(NodeDamage::OtherNodeDamage);
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if pref!(media.testing.enabled) {
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let window = self.owner_window();
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let task_source = window.task_manager().media_element_task_source();
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task_source.queue_simple_event(self.upcast(), atom!("postershown"), &window);
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self.owner_window()
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.task_manager()
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.media_element_task_source()
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.queue_simple_event(self.upcast(), atom!("postershown"));
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}
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}
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@ -1385,21 +1386,16 @@ impl HTMLMediaElement {
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*self.player.borrow_mut() = Some(player);
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let trusted_node = Trusted::new(self);
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let (task_source, canceller) = window
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.task_manager()
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.media_element_task_source_with_canceller();
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let task_source = window.task_manager().media_element_task_source();
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ROUTER.add_typed_route(
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action_receiver,
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Box::new(move |message| {
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let event = message.unwrap();
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trace!("Player event {:?}", event);
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let this = trusted_node.clone();
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if let Err(err) = task_source.queue_with_canceller(
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task!(handle_player_event: move || {
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this.root().handle_player_event(&event, CanGc::note());
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}),
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&canceller,
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) {
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if let Err(err) = task_source.queue(task!(handle_player_event: move || {
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this.root().handle_player_event(&event, CanGc::note());
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})) {
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warn!("Could not queue player event handler task {:?}", err);
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}
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}),
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@ -1428,42 +1424,37 @@ impl HTMLMediaElement {
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if let Some(image_receiver) = image_receiver {
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let trusted_node = Trusted::new(self);
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let (task_source, canceller) = window
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.task_manager()
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.media_element_task_source_with_canceller();
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let task_source = window.task_manager().media_element_task_source();
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ROUTER.add_typed_route(
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image_receiver.to_ipc_receiver(),
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Box::new(move |message| {
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let msg = message.unwrap();
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let this = trusted_node.clone();
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if let Err(err) = task_source.queue_with_canceller(
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task!(handle_glplayer_message: move || {
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trace!("GLPlayer message {:?}", msg);
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let video_renderer = this.root().video_renderer.clone();
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if let Err(err) = task_source.queue(task!(handle_glplayer_message: move || {
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trace!("GLPlayer message {:?}", msg);
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let video_renderer = this.root().video_renderer.clone();
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match msg {
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GLPlayerMsgForward::Lock(sender) => {
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if let Some(holder) = video_renderer
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.lock()
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.unwrap()
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.current_frame_holder
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.as_mut() {
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holder.lock();
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sender.send(holder.get()).unwrap();
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};
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},
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GLPlayerMsgForward::Unlock() => {
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if let Some(holder) = video_renderer
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.lock()
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.unwrap()
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.current_frame_holder
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.as_mut() { holder.unlock() }
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},
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_ => (),
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}
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}),
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&canceller,
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) {
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match msg {
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GLPlayerMsgForward::Lock(sender) => {
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if let Some(holder) = video_renderer
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.lock()
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.unwrap()
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.current_frame_holder
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.as_mut() {
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holder.lock();
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sender.send(holder.get()).unwrap();
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};
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},
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GLPlayerMsgForward::Unlock() => {
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if let Some(holder) = video_renderer
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.lock()
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.unwrap()
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.current_frame_holder
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.as_mut() { holder.unlock() }
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},
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_ => (),
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}
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})) {
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warn!("Could not queue GL player message handler task {:?}", err);
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}
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}),
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@ -1513,10 +1504,9 @@ impl HTMLMediaElement {
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// the HTMLMediaElementMethods::Ended method
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// Step 3.
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let window = self.owner_window();
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let this = Trusted::new(self);
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let _ = window.task_manager().media_element_task_source().queue(
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let _ = self.owner_window().task_manager().media_element_task_source().queue(
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task!(reaches_the_end_steps: move || {
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let this = this.root();
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// Step 3.1.
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|
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@ -1537,8 +1527,7 @@ impl HTMLMediaElement {
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// Step 3.3.
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this.upcast::<EventTarget>().fire_event(atom!("ended"), CanGc::note());
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}),
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window.upcast(),
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})
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);
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// https://html.spec.whatwg.org/multipage/#dom-media-have_current_data
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@ -1548,12 +1537,10 @@ impl HTMLMediaElement {
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PlaybackDirection::Backwards => {
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if self.playback_position.get() <= self.earliest_possible_position() {
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let window = self.owner_window();
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window
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self.owner_window()
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.task_manager()
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.media_element_task_source()
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.queue_simple_event(self.upcast(), atom!("ended"), &window);
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.queue_simple_event(self.upcast(), atom!("ended"));
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}
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},
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}
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@ -1737,9 +1724,10 @@ impl HTMLMediaElement {
|
|||
self.duration.set(f64::INFINITY);
|
||||
}
|
||||
if previous_duration != self.duration.get() {
|
||||
let window = self.owner_window();
|
||||
let task_source = window.task_manager().media_element_task_source();
|
||||
task_source.queue_simple_event(self.upcast(), atom!("durationchange"), &window);
|
||||
self.owner_window()
|
||||
.task_manager()
|
||||
.media_element_task_source()
|
||||
.queue_simple_event(self.upcast(), atom!("durationchange"));
|
||||
}
|
||||
|
||||
// Step 5.
|
||||
|
|
@ -2130,11 +2118,10 @@ impl HTMLMediaElementMethods<crate::DomTypeHolder> for HTMLMediaElement {
|
|||
}
|
||||
|
||||
self.muted.set(value);
|
||||
let window = self.owner_window();
|
||||
window
|
||||
self.owner_window()
|
||||
.task_manager()
|
||||
.media_element_task_source()
|
||||
.queue_simple_event(self.upcast(), atom!("volumechange"), &window);
|
||||
.queue_simple_event(self.upcast(), atom!("volumechange"));
|
||||
if !self.is_allowed_to_play() {
|
||||
self.internal_pause_steps();
|
||||
}
|
||||
|
|
@ -2229,9 +2216,10 @@ impl HTMLMediaElementMethods<crate::DomTypeHolder> for HTMLMediaElement {
|
|||
|
||||
let state = self.ready_state.get();
|
||||
|
||||
let window = self.owner_window();
|
||||
// FIXME(nox): Why are errors silenced here?
|
||||
let task_source = window.task_manager().media_element_task_source();
|
||||
let task_source = self
|
||||
.owner_window()
|
||||
.task_manager()
|
||||
.media_element_task_source();
|
||||
if self.Paused() {
|
||||
// Step 6.1.
|
||||
self.paused.set(false);
|
||||
|
|
@ -2243,14 +2231,14 @@ impl HTMLMediaElementMethods<crate::DomTypeHolder> for HTMLMediaElement {
|
|||
}
|
||||
|
||||
// Step 6.3.
|
||||
task_source.queue_simple_event(self.upcast(), atom!("play"), &window);
|
||||
task_source.queue_simple_event(self.upcast(), atom!("play"));
|
||||
|
||||
// Step 6.4.
|
||||
match state {
|
||||
ReadyState::HaveNothing |
|
||||
ReadyState::HaveMetadata |
|
||||
ReadyState::HaveCurrentData => {
|
||||
task_source.queue_simple_event(self.upcast(), atom!("waiting"), &window);
|
||||
task_source.queue_simple_event(self.upcast(), atom!("waiting"));
|
||||
},
|
||||
ReadyState::HaveFutureData | ReadyState::HaveEnoughData => {
|
||||
self.notify_about_playing();
|
||||
|
|
@ -2262,19 +2250,16 @@ impl HTMLMediaElementMethods<crate::DomTypeHolder> for HTMLMediaElement {
|
|||
let this = Trusted::new(self);
|
||||
let generation_id = self.generation_id.get();
|
||||
task_source
|
||||
.queue(
|
||||
task!(resolve_pending_play_promises: move || {
|
||||
let this = this.root();
|
||||
if generation_id != this.generation_id.get() {
|
||||
return;
|
||||
}
|
||||
.queue(task!(resolve_pending_play_promises: move || {
|
||||
let this = this.root();
|
||||
if generation_id != this.generation_id.get() {
|
||||
return;
|
||||
}
|
||||
|
||||
this.fulfill_in_flight_play_promises(|| {
|
||||
this.play_media();
|
||||
});
|
||||
}),
|
||||
window.upcast(),
|
||||
)
|
||||
this.fulfill_in_flight_play_promises(|| {
|
||||
this.play_media();
|
||||
});
|
||||
}))
|
||||
.unwrap();
|
||||
}
|
||||
|
||||
|
|
@ -2478,11 +2463,10 @@ impl HTMLMediaElementMethods<crate::DomTypeHolder> for HTMLMediaElement {
|
|||
if *value != self.volume.get() {
|
||||
self.volume.set(*value);
|
||||
|
||||
let window = self.owner_window();
|
||||
window
|
||||
self.owner_window()
|
||||
.task_manager()
|
||||
.media_element_task_source()
|
||||
.queue_simple_event(self.upcast(), atom!("volumechange"), &window);
|
||||
.queue_simple_event(self.upcast(), atom!("volumechange"));
|
||||
if !self.is_allowed_to_play() {
|
||||
self.internal_pause_steps();
|
||||
}
|
||||
|
|
@ -2809,11 +2793,10 @@ impl FetchResponseListener for HTMLMediaElementFetchListener {
|
|||
// https://html.spec.whatwg.org/multipage/#concept-media-load-resource step 4,
|
||||
// => "If mode is remote" step 2
|
||||
if Instant::now() > self.next_progress_event {
|
||||
let window = elem.owner_window();
|
||||
window
|
||||
elem.owner_window()
|
||||
.task_manager()
|
||||
.media_element_task_source()
|
||||
.queue_simple_event(elem.upcast(), atom!("progress"), &window);
|
||||
.queue_simple_event(elem.upcast(), atom!("progress"));
|
||||
self.next_progress_event = Instant::now() + Duration::from_millis(350);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue