RFR: 8242577: Cell selection fails on iOS most of the times

Jose Pereda jpereda at openjdk.java.net
Tue Apr 14 10:40:43 UTC 2020

There are cases when iOS sends one or more NSTouchPhaseMoved for a given touch event, in between NSTouchPhaseBegan and
NSTouchPhaseEnded , even if the initial event location didn't change.

By default, all these events are emulated as mouse enter/down, drag and up/exit events.

However, when the user taps quickly or even holds steady on a cell, if these touch moved events are generated and sent
as mouse drag events, the cell selection fails, as the flag `latePress` used in
is set to false, preventing the cell selection that should happen upon touch release event.

This PR prevents emulating mouse drag events when the touch event doesn't change its location.


Commit messages:
 - Don’t emulate as mouse drag events touch moved events if location didn’t change

Changes: https://git.openjdk.java.net/jfx/pull/181/files
 Webrev: https://webrevs.openjdk.java.net/jfx/181/webrev.00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8242577
  Stats: 8 lines in 2 files changed: 7 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jfx/pull/181.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/181/head:pull/181

PR: https://git.openjdk.java.net/jfx/pull/181

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