feat: updateSource (for now only to update geojson data)

Author: farfromrefug

src/mapbox.android.ts

@@ -40,6 +40,7 @@ import {
     SetZoomLevelOptions,
     ShowOptions,
     TrackUserOptions,
+    UpdateSourceOptions,
     UserLocation,
     UserLocationCameraMode,
     Viewport,
@@ -2264,6 +2265,41 @@ export class Mapbox extends MapboxCommon implements MapboxApi {
         });
     }
 
+    /**
+     * update a geojson source
+     *
+     */
+    updateSource(id: string, options: UpdateSourceOptions, nativeMap?) {
+        return new Promise((resolve, reject) => {
+            try {
+                const theMap: com.mapbox.mapboxsdk.maps.MapboxMap = nativeMap || this._mapboxMapInstance;
+                if (!theMap) {
+                    reject('No map has been loaded');
+                    return;
+                }
+
+                const source = theMap.getStyle().getSource(id);
+                if (!source) {
+                    reject('Source does not exists: ' + id);
+                    return;
+                }
+                switch (options.type) {
+                    case 'geojson':
+                        const geoJsonString = JSON.stringify(options.data);
+                        (source as com.mapbox.mapboxsdk.style.sources.GeoJsonSource).setGeoJson(geoJsonString);
+                        break;
+                    default:
+                        reject('Invalid source type: ' + options['type']);
+                        return;
+                }
+            } catch (ex) {
+                if (Trace.isEnabled()) {
+                    CLog(CLogTypes.info, 'Error in mapbox.addSource: ' + ex);
+                }
+                reject(ex);
+            }
+        });
+    }
     /**
      * add a geojson or vector source
      *

src/mapbox.common.ts

@@ -293,6 +293,7 @@ export type UserTrackingMode = 'NONE' | 'FOLLOW' | 'FOLLOW_WITH_HEADING' | 'FOLL
 // -------------------------------------------------------------
 
 export type AddSourceOptions = VectorSource | GeoJSONSource | RasterSource;
+export type UpdateSourceOptions = VectorSource | GeoJSONSource | RasterSource;
 
 // -------------------------------------------------------------
 
@@ -605,6 +606,7 @@ export interface MapboxApi {
     trackUser(options: TrackUserOptions, nativeMap?: any): Promise<void>;
 
     addSource(id: string, options: AddSourceOptions, nativeMapView?: any): Promise<any>;
+    updateSource(id: string, options: UpdateSourceOptions, nativeMapView?: any): Promise<any>;
 
     removeSource(id: string, nativeMap?: any): Promise<any>;
 
@@ -953,6 +955,9 @@ export abstract class MapboxViewCommonBase extends ContentView implements Mapbox
     addSource(id: string, options: AddSourceOptions): Promise<any> {
         return this.mapbox.addSource(id, options, this.getNativeMapView());
     }
+    updateSource(id: string, options: UpdateSourceOptions): Promise<any> {
+        return this.mapbox.updateSource(id, options, this.getNativeMapView());
+    }
     removeSource(id: string): Promise<any> {
         return this.mapbox.removeSource(id, this.getNativeMapView());
     }

src/mapbox.ios.ts

@@ -30,6 +30,7 @@ import {
     SetZoomLevelOptions,
     ShowOptions,
     TrackUserOptions,
+    UpdateSourceOptions,
     UserLocation,
     UserLocationCameraMode,
     Viewport,
@@ -2068,6 +2069,44 @@ export class Mapbox extends MapboxCommon implements MapboxApi {
         });
     }
 
+    /**
+     * update a geojson source
+     *
+     */
+    updateSource(id: string, options: UpdateSourceOptions, nativeMap?) {
+        return new Promise((resolve, reject) => {
+            try {
+                const theMap: MGLMapView = nativeMap || this._mapboxViewInstance;
+                if (!theMap) {
+                    reject('No map has been loaded');
+                    return;
+                }
+
+                const source = theMap.style.sourceWithIdentifier(id);
+                if (!source) {
+                    reject('Source does not exists: ' + id);
+                    return;
+                }
+                switch (options.type) {
+                    case 'geojson':
+                        const content: NSString = NSString.stringWithString(JSON.stringify(options.data));
+                        const nsData: NSData = content.dataUsingEncoding(NSUTF8StringEncoding);
+                        const geoJsonShape = MGLShape.shapeWithDataEncodingError(nsData, NSUTF8StringEncoding);
+                        (source as MGLShapeSource).shape = geoJsonShape;
+                        break;
+                    default:
+                        reject('Invalid source type: ' + options['type']);
+                        return;
+                }
+            } catch (ex) {
+                if (Trace.isEnabled()) {
+                    CLog(CLogTypes.info, 'Error in mapbox.addSource: ' + ex);
+                }
+                reject(ex);
+            }
+        });
+    }
+
     /**
      * add a vector or geojson source
      *
@@ -2076,7 +2115,6 @@ export class Mapbox extends MapboxCommon implements MapboxApi {
      *
      * @link https://docs.mapbox.com/mapbox-gl-js/api/#map#addsource
      */
-
     addSource(id: string, options: AddSourceOptions, nativeMap?): Promise<void> {
         return new Promise((resolve, reject) => {
             try {