Added checkbox for cluster attribute (#810)

* Added additional checkbox to set the cluster attribute when adding a GeoJson source

* Fixed default source function in the 'geojson_json' case

---------

Co-authored-by: shimon <ruisuhsh100@gmail.com>

src/components/ModalSources.jsx

@@ -128,6 +128,7 @@ class AddSource extends React.Component {
       }
       case 'geojson_json': return {
         type: 'geojson',
+        cluster: source.cluster || false,
         data: {}
       }
       case 'tilejson_vector': return {

src/components/ModalSourcesTypeEditor.jsx

@@ -8,6 +8,7 @@ import FieldSelect from './FieldSelect'
 import FieldDynamicArray from './FieldDynamicArray'
 import FieldArray from './FieldArray'
 import FieldJson from './FieldJson'
+import FieldCheckbox from './FieldCheckbox'
 
 
 class TileJSONSourceEditor extends React.Component {
@@ -205,7 +206,8 @@ class GeoJSONSourceFieldJsonEditor extends React.Component {
   }
 
   render() {
-    return <Block label={"GeoJSON"} fieldSpec={latest.source_geojson.data}>
+    return <div>
+      <Block label={"GeoJSON"} fieldSpec={latest.source_geojson.data}>
         <FieldJson
           layer={this.props.source.data}
           maxHeight={200}
@@ -222,6 +224,17 @@ class GeoJSONSourceFieldJsonEditor extends React.Component {
           }}
         />
       </Block>
+      <FieldCheckbox
+        label={'Cluster'}
+        value={this.props.source.cluster}
+        onChange={cluster => {
+          this.props.onChange({
+            ...this.props.source,
+            cluster: cluster,
+          })
+        }}
+      />
+    </div>
   }
 }