When a Touchable component returns 0 for
`touchableGetHighlightDelayMS()` the mixin may occasionally try to
detect if the press event occurred on the hit area before the hit area
has been determined. Clearing out this value ensures that
`positionOnActivate` is recalculated before that takes place.
Close#586
Add support for more key combinations that only fire 'keydown' React DOM
events. And allow users to call 'preventDefault', etc., on the event.
Fix#567Close#582
Problem:
Numeric values are suffixed with 'px', unless the property supports
unitless values. However, vendor prefixed properties were ignored
resulting in invalid CSS values for properties like
'-webkit-flex-shrink'.
Solution:
Apply the upstream solution from React, which includes vendor prefixed
properties in the "unitless number" map. Also build a custom vendor
prefixer to ensure adequate browser support (i.e., Safari 7 and older
Chrome).
According to MDN, "touch-action:manipulation" enables "…panning and
pinch zoom gestures, but disables additional non-standard gestures such
as double-tap to zoom. Disabling double-tap to zoom removes the need for
browsers to delay the generation of click events when the user taps the
screen."
The recommendation from the Chrome team is to use 'touch-action' to
disable scrolling (via touch modality) when passive event listeners are
in use.
Close#563
Problem:
Although 'Touchable' supports basic keyboard usage, it doesn't support
delays or interaction via the Space key.
Solution:
Extend the 'Touchable' mixin to better support keyboard interactions.
All touchable callbacks and delays are now supported when interacted
with via a keyboard's Enter and Space keys (as would be expected of
native 'button' elements). However, events are not normalized to mimic
touch events.
Minor upstream changes to the Touchables in React Native are also
included.
