Intent to Implement: Send mouse back/forward buttons to javascript

[Dave Tapuska]

Contact emails dtap...@chromium.org Spec https://w3c.github.io/pointerevents/#the-button-property Summary Send mouse events (mousedown, auxclick, mouseup) for back and forward buttons on mice with 5 or more buttons.. Motivation

Some web applications would like to take advantage of the additional buttons on mice overriding the default user agent activity for these buttons. Interoperability risk Firefox: No public signals Edge: No public signals Safari: No public signals Web developers: Positive Compatibility risk None. Ongoing technical constraints We don't want to repeat the right mouse button issues (the default action occurs on mousedown on linux, but on mouseup on windows). We are proposing that the default action for the back and forward button occurs on the mousedown so that it is consistent across the platform. This is consistent with middle click autoscroll on Windows. Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, Chrome OS, Android, and Android WebView)? Yes or no. Yes OWP launch tracking bug https://crbug.com/680741 Link to entry on the Chrome Platform Status https://www.chromestatus.com/features/5088301178421248 Requesting approval to ship? No.

[Rick Byers]

Do we already send pointerdown/pointerup for these, or are you including those as well as mousedown, auxclick, mouseup?

Doesn't Edge already send pointerdown/pointerup in this case?

What's the benefit of sending mousedown/mouseup at all instead of only pointerdown/pointerup?  If we want to send mousedown/mouseup then I think we probably need a UI events spec update since UI events defines only 3 buttons.

On Tue, Nov 21, 2017 at 9:23 AM, Dave Tapuska <dtap...@chromium.org> wrote:

Contact emails dtap...@chromium.org Spec https://w3c.github.io/pointerevents/#the-button-property Summary Send mouse events (mousedown, auxclick, mouseup) for back and forward buttons on mice with 5 or more buttons.. Motivation

Some web applications would like to take advantage of the additional buttons on mice overriding the default user agent activity for these buttons. Interoperability risk Firefox: No public signals Edge: No public signals Safari: No public signals Web developers: Positive Compatibility risk None. Ongoing technical constraints We don't want to repeat the right mouse button issues (the default action occurs on mousedown on linux, but on mouseup on windows). We are proposing that the default action for the back and forward button occurs on the mousedown so that it is consistent across the platform. This is consistent with middle click autoscroll on Windows. Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, Chrome OS, Android, and Android WebView)? Yes or no. Yes OWP launch tracking bug https://crbug.com/680741 Link to entry on the Chrome Platform Status https://www.chromestatus.com/features/5088301178421248 Requesting approval to ship? No.

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