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Use task! to fire a progress event when updating the image data

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This commit is contained in:
Anthony Ramine 2017-09-17 20:39:14 +02:00
parent 30a1d3f617
commit fba54c7735
1 changed files with 21 additions and 24 deletions
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45
components/script/dom/htmlimageelement.rs
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@ -386,28 +386,6 @@ impl HTMLImageElement {
let _ = task_source.queue(task, window.upcast());
}
/// Step 10 of html.spec.whatwg.org/multipage/#update-the-image-data
fn dispatch_loadstart_progress_event(&self) {
struct FireprogressEventTask {
img: Trusted<HTMLImageElement>,
}
impl Task for FireprogressEventTask {
fn run(self: Box<Self>) {
let progressevent = ProgressEvent::new(&self.img.root().global(),
atom!("loadstart"), EventBubbles::DoesNotBubble, EventCancelable::NotCancelable,
false, 0, 0);
progressevent.upcast::<Event>().fire(self.img.root().upcast());
}
}
let task = box FireprogressEventTask {
img: Trusted::new(self),
};
let document = document_from_node(self);
let window = document.window();
let task_source = window.dom_manipulation_task_source();
let _ = task_source.queue(task, window.upcast());
}
/// https://html.spec.whatwg.org/multipage/#update-the-source-set
fn update_source_set(&self) -> Vec<DOMString> {
let elem = self.upcast::<Element>();
@ -550,8 +528,27 @@ impl HTMLImageElement {
// TODO: take pixel density into account
match self.select_image_source() {
Some(src) => {
// Step 10
self.dispatch_loadstart_progress_event();
// Step 10.
let window = document.window();
let this = Trusted::new(self);
// FIXME(nox): Why are errors silenced here?
let _ = window.dom_manipulation_task_source().queue(
box task!(fire_progress_event: move || {
let this = this.root();
let event = ProgressEvent::new(
&this.global(),
atom!("loadstart"),
EventBubbles::DoesNotBubble,
EventCancelable::NotCancelable,
false,
0,
0,
);
event.upcast::<Event>().fire(this.upcast());
}),
window.upcast(),
);
// Step 11
let base_url = document.base_url();
let parsed_url = base_url.join(&src);