Bug 276874 – [WPE][WebDriver] Missing the first touch tap

• Status: RESOLVED
• Resolution: FIXED
• Component: WebDriver

[Lauro Moura]

Created attachment 471927 [details]
Demo script

279643@main added support for WebDriver touch events in the new WPE API, but the first touch "tap" doesn't seem to be processed correctly, not generating the respective "touchstart/touchend" pair in the target element. Only from the second pair onwards, the target element starts emitting the events.

I'm using the HTML sample at https://people.igalia.com/lmoura/webdriver/touch-tap-issue.html, and attached is the python script, using the WPT `webdriver` library[1]. The example works fine in Chromium, generating the event pair for each issued command.

Early investigation shows the native touch events seem to be correctly generated and delivered to the `WebPageProxy`. Looks like something from WebProcess's `EventHandler::handleTouchEvent` down might be the cause.

I also tested reverting 280661@main (added touch gestures to WPE), but the behavior is the same.

[1] A tarball for the library is available at https://people.igalia.com/lmoura/webdriver/webdriver-1.0.tar.gz, generated from `tools/webdriver` in the WPT tree (https://github.com/web-platform-tests/wpt/tree/master/tools/webdriver/).

[Lauro Moura]

Pull request: https://github.com/WebKit/WebKit/pull/31883

[EWS]

Committed 281996@main (c76015a5f579): <https://commits.webkit.org/281996@main>

Reviewed commits have been landed. Closing PR #31883 and removing active labels.

[Radar WebKit Bug Importer]

<rdar://problem/133467821>