[Maps] MapEmbeddable setLayerList (#52573)

* [Maps] MapEmbeddable setLayerList

* review feedback

x-pack/legacy/plugins/maps/public/embeddable/README.md

@@ -79,3 +79,101 @@ const eventHandlers = {
 
 const mapEmbeddable = await factory.createFromState(state, input, parent, renderTooltipContent, eventHandlers);
 ```
+
+
+#### Passing in geospatial data
+You can pass geospatial data into the Map embeddable by configuring the layerList parameter with a layer with `GEOJSON_FILE` source.
+Geojson sources will not update unless you modify `__featureCollection` property by calling the `setLayerList` method.
+
+```
+const factory = new MapEmbeddableFactory();
+const state = {
+  layerList: [
+    {
+      'id': 'gaxya',
+      'label': 'My geospatial data',
+      'minZoom': 0,
+      'maxZoom': 24,
+      'alpha': 1,
+      'sourceDescriptor': {
+        'id': 'b7486',
+        'type': 'GEOJSON_FILE',
+        '__featureCollection': {
+          "type": "FeatureCollection",
+          "features": [
+            {
+              "type": "Feature",
+              "geometry": {
+                "type": "Polygon",
+                "coordinates": [
+                  [
+                    [0, 0], [10, 10], [10, 0], [0, 0]
+                  ]
+                ]
+              },
+              "properties": {
+                "name": "null island",
+                "another_prop": "something else interesting"
+              }
+            }
+          ]
+        }
+      },
+      'visible': true,
+      'style': {
+        'type': 'VECTOR',
+        'properties': {}
+      },
+      'type': 'VECTOR'
+    }
+  ],
+  title: 'my map',
+}
+const input = {
+  hideFilterActions: true,
+  isLayerTOCOpen: false,
+  openTOCDetails: ['tfi3f', 'edh66'],
+  mapCenter: { lat: 0.0, lon: 0.0, zoom: 7 }
+}
+const mapEmbeddable = await factory.createFromState(state, input, parent);
+
+mapEmbeddable.setLayerList([
+  {
+    'id': 'gaxya',
+    'label': 'My geospatial data',
+    'minZoom': 0,
+    'maxZoom': 24,
+    'alpha': 1,
+    'sourceDescriptor': {
+      'id': 'b7486',
+      'type': 'GEOJSON_FILE',
+      '__featureCollection': {
+        "type": "FeatureCollection",
+        "features": [
+          {
+            "type": "Feature",
+            "geometry": {
+              "type": "Polygon",
+              "coordinates": [
+                [
+                  [35, 35], [45, 45], [45, 35], [35, 35]
+                ]
+              ]
+            },
+            "properties": {
+              "name": "null island",
+              "another_prop": "something else interesting"
+            }
+          }
+        ]
+      }
+    },
+    'visible': true,
+    'style': {
+      'type': 'VECTOR',
+      'properties': {}
+    },
+    'type': 'VECTOR'
+  }
+]);
+```

x-pack/legacy/plugins/maps/public/embeddable/map_embeddable.js

@@ -165,6 +165,11 @@ export class MapEmbeddable extends Embeddable {
     });
   }
 
+  async setLayerList(layerList) {
+    this._layerList = layerList;
+    return await this._store.dispatch(replaceLayerList(this._layerList));
+  }
+
   addFilters = filters => {
     npStart.plugins.uiActions.executeTriggerActions(APPLY_FILTER_TRIGGER, {
       embeddable: this,