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Modern Event System: fix bug in EnterLeave (#18849)

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This commit is contained in:
Dominic Gannaway
2020-05-07 00:13:13 +01:00
committed by GitHub
parent 7eaa1d7e33
commit 6778c53c16
1 changed files with 12 additions and 9 deletions
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packages/react-dom/src/events/plugins/ModernEnterLeaveEventPlugin.js
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+12 -9
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@@ -65,16 +65,18 @@ const EnterLeaveEventPlugin = {
topLevelType === TOP_MOUSE_OVER || topLevelType === TOP_POINTER_OVER;
const isOutEvent =
topLevelType === TOP_MOUSE_OUT || topLevelType === TOP_POINTER_OUT;
const related = nativeEvent.relatedTarget || nativeEvent.fromElement;
if (isOverEvent && (eventSystemFlags & IS_REPLAYED) === 0 && related) {
// Due to the fact we don't add listeners to the document with the
// modern event system and instead attach listeners to roots, we
// need to handle the over event case. To ensure this, we just need to
// make sure the node that we're coming from is managed by React.
const inst = getClosestInstanceFromNode(related);
if (inst !== null) {
return;
if (isOverEvent && (eventSystemFlags & IS_REPLAYED) === 0) {
const related = nativeEvent.relatedTarget || nativeEvent.fromElement;
if (related) {
// Due to the fact we don't add listeners to the document with the
// modern event system and instead attach listeners to roots, we
// need to handle the over event case. To ensure this, we just need to
// make sure the node that we're coming from is managed by React.
const inst = getClosestInstanceFromNode(related);
if (inst !== null) {
return;
}
}
}
@@ -100,6 +102,7 @@ const EnterLeaveEventPlugin = {
let from;
let to;
if (isOutEvent) {
const related = nativeEvent.relatedTarget || nativeEvent.toElement;
from = targetInst;
to = related ? getClosestInstanceFromNode(related) : null;
if (to !== null) {