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Fix mobile touches can be empty.

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Use changedTouches as backup
This commit is contained in:
Berkeley Martinez
2016-01-09 22:47:28 -08:00
parent 835a478282
commit 632f596821
1 changed files with 4 additions and 3 deletions
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7
common/app/routes/Hikes/flux/Actions.js
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@ -38,12 +38,13 @@ function findNextHike(hikes, id) {
function getMouse(e, [dx, dy]) { function getMouse(e, [dx, dy]) {
let { pageX, pageY, touches } = e; let { pageX, pageY, touches, changedTouches } = e;
if (touches) { // touches can be empty on touchend
if (touches || changedTouches) {
e.preventDefault(); e.preventDefault();
// these re-assigns the values of pageX, pageY from touches // these re-assigns the values of pageX, pageY from touches
({ pageX, pageY } = touches[0]); ({ pageX, pageY } = touches[0] || changedTouches[0]);
} }
return [pageX - dx, pageY - dy]; return [pageX - dx, pageY - dy];