feat: source-layer support for layers

Author: farfromrefug

src/layers/layer-factory.android.ts

@@ -12,6 +12,7 @@ export class LayerFactory {
         switch (style.type) {
             case 'line':
                 nativeLayer = new com.mapbox.mapboxsdk.style.layers.LineLayer(style.id, sourceId).withProperties(layerProperties);
+
                 break;
             case 'circle':
                 nativeLayer = new com.mapbox.mapboxsdk.style.layers.CircleLayer(style.id, sourceId).withProperties(layerProperties);
@@ -37,6 +38,9 @@ export class LayerFactory {
         if (style.maxzoom !== undefined) {
             nativeLayer.setMaxZoom(style.maxzoom);
         }
+        if (style['source-layer'] && (nativeLayer as any).withSourceLayer) {
+            (nativeLayer as any).withSourceLayer(style['source-layer']);
+        }
         return layer;
     }
 

src/layers/layer-factory.ios.ts

@@ -30,6 +30,9 @@ export class LayerFactory {
         if (style.maxzoom !== undefined) {
             nativeLayer.maximumZoomLevel = style.maxzoom;
         }
+        if (style['source-layer']) {
+            (nativeLayer as any).sourceLayerIdentifier = style['source-layer'];
+        }
         const layerProperties = this.parseProperties(style.type, Object.assign(style.paint || {}, style.layout || {})); // TODO: handle defaults
 
         for (const propKey in layerProperties) {