If you go back while page is loading, progressbar does not stops loading.

[Gozala]

This is really bad because progressbar will never actually finish loading.

[Gozala]

Fix would be to just handle goBack / goForward / stop similar to how we handle LoadEnd

[paulrouget]

Aren't we supposed to get a loadend event from Servo followed by a loadstart on goBack?

[Gozala]

Aren't we supposed to get a loadend event from Servo followed by a loadstart on goBack?

You tell me :) But it does not seem to, so if you go back while page is loading we wind up with infinitely loading progressbar.

[paulrouget]

it does not seem to

I'll look. If it doesn't, let's fix it in Servo.

[paulrouget]

Not to self: going back too early suspend an already suspended timeline.

<iframe mozbrowser="true"></iframe>

<script>
  var iframe = document.querySelector("iframe");
  var once = (elt, event, cb) => {
    var _cb = () => {
      elt.removeEventListener(event, _cb);
      cb();
    }
    elt.addEventListener(event, _cb);
  }
  iframe.addEventListener("mozbrowserloadstart", e => console.log("START"));
  iframe.addEventListener("mozbrowserloadend", e => console.log("END"));
  once(iframe, "mozbrowserloadend", () => {
    once(iframe, "mozbrowserloadstart", () => iframe.goBack());
    iframe.src = "http://example.com/test";
  });
  iframe.src = "http://example.com";
</script>

[paulrouget]

We first need this: servo/servo#12784