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package com.mapbox.mapboxsdk.location;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import com.mapbox.mapboxsdk.maps.Style;
import com.mapbox.mapboxsdk.style.layers.Layer;
class LocationComponentPositionManager {
@NonNull
private final Style style;
@Nullable
private String layerAbove;
@Nullable
private String layerBelow;
LocationComponentPositionManager(@NonNull Style style, @Nullable String layerAbove, @Nullable String layerBelow) {
this.style = style;
this.layerAbove = layerAbove;
this.layerBelow = layerBelow;
}
/**
* Returns true whenever layer above/below configuration has changed and requires re-layout.
*/
boolean update(@Nullable String layerAbove, @Nullable String layerBelow) {
boolean requiresUpdate =
!(this.layerAbove == layerAbove || (this.layerAbove != null && this.layerAbove.equals(layerAbove)))
|| !(this.layerBelow == layerBelow || (this.layerBelow != null && this.layerBelow.equals(layerBelow)));
this.layerAbove = layerAbove;
this.layerBelow = layerBelow;
return requiresUpdate;
}
void addLayerToMap(@NonNull Layer layer) {
if (layerAbove != null) {
style.addLayerAbove(layer, layerAbove);
} else if (layerBelow != null) {
style.addLayerBelow(layer, layerBelow);
} else {
style.addLayer(layer);
}
}
}
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