[Webkit-unassigned] [Bug 202143] [iOS] iOS 13 does not send proper events in Safari, such as double tap and long touch, possibly​ influencing Leaflet JS apps​

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=202143

Antoine Quint <graouts at apple.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |INVALID

--- Comment #6 from Antoine Quint <graouts at apple.com> ---
OK, the double-tap issue is also a Leaflet issue. Consider this code in DomEvent.DoubleTap.js:

        function onTouchStart(e) {
                var count;

                if (Browser.pointer) {
                        if ((!Browser.edge) || e.pointerType === 'mouse') { return; }
                        count = _pointersCount;
                } else {
                        count = e.touches.length;
                }

                if (count > 1) { return; }

                var now = Date.now(),
                    delta = now - (last || now);

                touch = e.touches ? e.touches[0] : e;
                doubleTap = (delta > 0 && delta <= delay);
                last = now;
        }

The function branches early between user agents that support Pointer Events and those that don't (based on `Browser.pointer`), but if `Browser.edge` is false it returns early. That property is false in iOS 13 and thus this function returns early and a "dblclick" event is never dispatched on the Leaflet Map object.

So all reported issues are Leaflet issues, there is nothing for us to do here.

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