The overflowchanged Event

[PhistucK]

Reading the latest Last Week post by Peter, I was surprised to discover that there is an apparently nonstandard event in Blink (and WebKit) - the overflowchanged event - and that it is even getting fixes (or maybe requestAnimationFrame is fixed to match its timing, I am not sure).

(http://www.w3.org/wiki/List_of_events suggests it was in Firefox 1.5 first, but apparently removed?)

I have never heard of this event, is there a reason to keep it? can anyone volunteer to add a UseCounter for it and remove it accordingly if it is not used?

(I am not sufficient in C++ at all)

Thank you!

☆PhistucK

[Philip Jägenstedt]

I've uploaded a patch for review:

https://codereview.chromium.org/102793003

Philip

[PhistucK]

Thank you very much!

How can I track the results (once they are in, a few months from now, I guess?)?

☆PhistucK

[Adam Barth]

On Tue, Dec 3, 2013 at 1:34 PM, PhistucK <phis...@gmail.com> wrote:

Thank you very much!

How can I track the results (once they are in, a few months from now, I guess?)?

The public dashboard only shows the use counter data for CSS properties.  If you ask someone at Google, we can tell you the value from our internal dashboard.  Philip might also have his own data from Opera installs.

Adam

[Elliott Sprehn]

On Tue, Dec 3, 2013 at 3:54 PM, PhistucK <phis...@gmail.com> wrote:

Reading the latest Last Week post by Peter, I was surprised to discover that there is an apparently nonstandard event in Blink (and WebKit) - the overflowchanged event - and that it is even getting fixes (or maybe requestAnimationFrame is fixed to match its timing, I am not sure).

It is only getting fixes that are security related. :)

(http://www.w3.org/wiki/List_of_events suggests it was in Firefox 1.5 first, but apparently removed?)

Firefox supports a different event (actually two of them):

https://developer.mozilla.org/en-US/docs/Web/Reference/Events/overflow

https://developer.mozilla.org/en-US/docs/Web/Reference/Events/underflow

 

I have never heard of this event, is there a reason to keep it?

There's a bunch of random blog posts about it, even from DevRel people at Mozilla on how to use it to track certain kinds of layout changes. The feature is useful, although our API is pretty awkward. I'd support removing it if the UseCounter backs that up. :)

- E

[PhistucK]

I guess this can be removed -

http://www.chromestatus.com/metrics/feature/timeline/popularity/208

Anyone wants to take this? :)

Thank you, everyone!

☆PhistucK

[gnanas...@samsung.com]

I will take this and remove.

[cahit...@gmail.com]

That's very shame. Webkit(with overflowchanged) and Firefox(with overflow and underflow events) were the only browsers that support per-element responsive design, resize-proof web component UI development, size-based loading of content.

This event was the great way to detect dom resize changes.

[Philip Jägenstedt]

It hasn't been removed or even deprecated yet, see this thread:
https://groups.google.com/a/chromium.org/d/msg/blink-dev/1RCzsyEyNU8/5vNpxrhRbUIJ

Philip

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