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[Maps] ensure any existing layers get cleared when previewing a new one #31973

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Feb 26, 2019
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Original file line number Diff line number Diff line change
Expand Up @@ -33,7 +33,12 @@ function mapDispatchToProps(dispatch) {
closeFlyout: () => {
dispatch(clearTransientLayerStateAndCloseFlyout());
},
previewLayer: layer => {
previewLayer: async (layer) => {
//this removal always needs to happen prior to adding the new layer
//many source editors allow users to modify the settings in the add-source wizard
//this triggers a new request for preview. Any existing transient layers need to be cleared before the new one can be added.
await dispatch(setSelectedLayer(null));
await dispatch(removeTransientLayer());
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Makes sense to me!

dispatch(addLayer(layer.toLayerDescriptor()));
dispatch(setSelectedLayer(layer.getId()));
dispatch(setTransientLayer(layer.getId()));
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