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Only preventDefault when event is cancelable

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This commit is contained in:
Andreas Hocevar
2021-03-03 23:39:55 +01:00
parent c9ec2083d3
commit 4ce05ed980
1 changed files with 3 additions and 2 deletions
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src/ol/MapBrowserEventHandler.js
+3 -2
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@@ -336,9 +336,10 @@ class MapBrowserEventHandler extends EventTarget {
handleTouchMove_(event) { handleTouchMove_(event) {
// Due to https://github.com/mpizenberg/elm-pep/issues/2, `this.originalPointerMoveEvent_` // Due to https://github.com/mpizenberg/elm-pep/issues/2, `this.originalPointerMoveEvent_`
// may not be initialized yet when we get here on a platform without native pointer events. // may not be initialized yet when we get here on a platform without native pointer events.
const originalEvent = this.originalPointerMoveEvent_;
if ( if (
!this.originalPointerMoveEvent_ || (!originalEvent || originalEvent.defaultPrevented) &&
this.originalPointerMoveEvent_.defaultPrevented (typeof event.cancelable !== 'boolean' || event.cancelable === true)
) { ) {
event.preventDefault(); event.preventDefault();
} }