Web-Facing Change PSA: Update text selection on mouseup before dispatching click event

[Chromestatus]

Contact emails

perry...@gmail.com

Specification

No information provided

Summary

Currently Chromium applies the default action of a mouseup event (e.g. collapsing or committing a drag-selection in a text input) after the click event has already been dispatched. This violates developer expectations: a click handler that reads selection state sees stale data from before the mouseup default action ran. This change moves the mouseup default-action step to run before the click event is dispatched, so that selection (and any other mouseup side effects) is already settled when click handlers execute.

Blink component

Blink>Input

Web Feature ID

mouse-events

Risks

Interoperability and Compatibility

No information provided

Gecko: No signal

WebKit: No signal

Web developers: No signals

Other signals:

WebView application risks

Does this intent deprecate or change behavior of existing APIs, such that it has potentially high risk for Android WebView-based applications?

No information provided

Debuggability

No information provided

Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, ChromeOS, Android, and Android WebView)?

Yes

Is this feature fully tested by web-platform-tests?

Yes

Tracking bug

https://issues.chromium.org/issues/40686462

Estimated milestones

Shipping on desktop	152
DevTrial on desktop	150
Shipping on Android	152
DevTrial on Android	150
Shipping on WebView	152

Link to entry on the Chrome Platform Status

https://chromestatus.com/feature/5298387739082752

This intent message was generated by Chrome Platform Status.

[Mike Taylor]

Hi there,

I think this should be an Intent to Ship, rather than a PSA - changing event order can break lots of hard-coded assumptions.

Can you resend as an Intent to Ship and fill out missing details, especially spec link & Interop and Compat considerations? If you have any evidence that this is safe to ship, please include it. :)

thanks,
Mike

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