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fix: onMouseEnter & onMouseLeave trigger between joined layers (#1671) #2126

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fix: onMouseEnter & onMouseLeave trigger between joined layers (#1671) #2126

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1d26d3f
fix: `onMouseEnter` & `onMouseLeave` trigger between joined layers (#…
Jungzl Feb 23, 2023
cfa48fe
fix: improve uniq func & handle edge case
Jungzl Mar 7, 2023
b8845bf
perf: array diff logic
Jungzl Mar 7, 2023
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17 changes: 13 additions & 4 deletions src/mapbox/mapbox.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -786,14 +786,23 @@ export default class Mapbox {
}
};

_uniqueLayersCount(features: MapboxGeoJSONFeature[] | null) {
if (!features) {
return 0;
}
return features.filter(
(feature, index) => features.findIndex(f => f.layer.id === feature.layer.id) === index
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This is very inefficient. Use new Set(ids).size

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done

).length;
}

_updateHover(e: MapMouseEvent) {
const {props} = this;
const shouldTrackHoveredFeatures =
props.interactiveLayerIds && (props.onMouseMove || props.onMouseEnter || props.onMouseLeave);

if (shouldTrackHoveredFeatures) {
const eventType = e.type;
const wasHovering = this._hoveredFeatures?.length > 0;
const hoveredLayersCount = this._uniqueLayersCount(this._hoveredFeatures);
let features;
if (eventType === 'mousemove') {
try {
Expand All @@ -806,14 +815,14 @@ export default class Mapbox {
} else {
features = [];
}
const isHovering = features.length > 0;
const hoveringLayersCount = this._uniqueLayersCount(features);

if (!isHovering && wasHovering) {
if (hoveringLayersCount < hoveredLayersCount) {
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Is this correct, though? What if the layer count is the same but one layer is replaced by another?

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don't know if it's ok to call pointEvents twice in one callback

e.type = 'mouseleave';
this._onPointerEvent(e);
}
this._hoveredFeatures = features;
if (isHovering && !wasHovering) {
if (hoveringLayersCount > hoveredLayersCount) {
e.type = 'mouseenter';
this._onPointerEvent(e);
}
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