Double-tap and hold accessibility gesture is not supported by range cell slider

[dcalhoun]

Description

When attempting to change the current value of a slider input for Columns, the double-tap and hold accessibility action is not supported. One can still modify the slider value by selecting the input and then swiping up/down, but it would be good to support the double-tap and hold gesture as well. This issue was identified in #30636 (review).

Step-by-step reproduction instructions

1. Enable VoiceOver/TalkBack.
2. Launch the block editor on WPiOS or WPAndroid.
3. Add a Column block.
4. Open the block Settings bottom sheet (i.e. tap gear icon).
5. Select a column layout.
6. Select one of the column inputs.
7. Double-tap and hold then drag the slider.

Expected behaviour

The slider value decrements/increments when sliding left/right.

Actual behaviour

The slider value does not change when sliding left/right.

Screenshots or screen recording (optional)

In the video, there is an attempt to modify Column 1 with the steps above. The successful modification of the Column 2 value was done using the supported swipe up/down gestures.

RPReplay_Final1619018412.MP4

WordPress information

• WordPress version: 5.7
• Gutenberg version: v10.4.1
• Are all plugins except Gutenberg deactivated? Yes
• Are you using a default theme (e.g. Twenty Twenty-One)? Yes

Device information

• Device: iPhone SE, Samsung Galaxy S20
• Operating system: iOS 14.4.2, Android 11
• WordPress app version: 17.1

[mchowning]

Thanks for reporting this issue @dcalhoun ! 🙇

I marked this as "low" priority since it seems like there is a pretty straightforward workaround for this by swiping up and down, but if you think this may be a blocking issue for some of our users, let's make this a high priority issue. wdyt?

[dcalhoun]

I marked this as "low" priority since it seems like there is a pretty straightforward workaround for this by swiping up and down, but if you think this may be a blocking issue for some of our users, let's make this a high priority issue. wdyt?

@mchowning I think it is fine to mark it as "low" for now. I'm not sure which gesture is most common for controlling sliders, but the accessibility announcement for the slider directs users to use the swipe up/down gesture that does work. Hopefully that will prevent users from being blocked until we support the double-tap and hold gesture.