[PWA] Long press to select incorrectly activated when scrolled

[raineorshine]

[PWA] Long press to select incorrectly activated when scrolled

[raineorshine]

Notes

• user-select: none disables long press
  • Does this work after the touchstart event?
  • -webkit-user-select: none
  • The dragHold highlight does not seem to be added at all after edit mode has been activated (even if edit mode is then deactivated)
    • Thus .pressed is not added to set userselect: none
  • .pressed is only added after the long press delay, not on touchstart
    • Could this be too late to prevent long press to select?
• e.preventDefault in the touchstart handler prevents long press
  • Disables all tap behavior, and we rely on the default browser behavior for precise caret selection in edit mode
  • Maybe this can be used when not in edit mode though?
• selectstart
• contextmenu
• dragstart
• -webkit-touch-callout: none
• pointer-events: none

Related

• #1388
• 0fb6905
• eb4579f

[raineorshine]

For some reason, useState was not working in useLongPress, causing startScrollY to always be 0 and thus create a false positive scroll threshold breach. The setter should have been resolved by the time the timer went off, and all the useCallbacks were subscribed to startScrollY correctly. I don't know how startScrollY was 0.

useRef works.