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Root nodes for the duration of their CSS transitions.

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This ensures that we can pass a node address as part of the asynchronous
transition end notification, making it safe to fire the corresponding
DOM event on the node from the script thread. Without explicitly rooting
this node when the transition starts, we risk the node being GCed before
the transition is complete.
This commit is contained in:
Josh Matthews 2017-04-07 06:57:08 +09:00
parent f3c8f7e0d0
commit dabebdfbf5
11 changed files with 126 additions and 25 deletions
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4
components/layout_thread/lib.rs
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@ -478,6 +478,7 @@ impl LayoutThread {
text_index_response: TextIndexResponse(None),
pending_images: vec![],
nodes_from_point_response: vec![],
newly_transitioning_nodes: vec![],
})),
error_reporter: CSSErrorReporter {
pipelineid: id,
@ -1436,11 +1437,14 @@ impl LayoutThread {
document: Option<&ServoLayoutDocument>,
rw_data: &mut LayoutThreadData,
context: &mut LayoutContext) {
assert!(rw_data.newly_transitioning_nodes.is_empty());
// Kick off animations if any were triggered, expire completed ones.
animation::update_animation_state(&self.constellation_chan,
&self.script_chan,
&mut *self.running_animations.write(),
&mut *self.expired_animations.write(),
&mut rw_data.newly_transitioning_nodes,
&self.new_animations_receiver,
self.id,
&self.timer);