Make loadFeaturesFromUrl accept an error callback

src/ol/source/formatvectorsource.js

@@ -48,12 +48,14 @@ goog.inherits(ol.source.FormatVector, ol.source.Vector);
 
 /**
  * @param {goog.Uri|string} url URL.
- * @param {function(this: T, Array.<ol.Feature>)} callback Callback.
- * @param {T} thisArg Value to use as `this` when executing `callback`.
+ * @param {function(this: T, Array.<ol.Feature>)} success Success Callback.
+ * @param {function(this: T)} error Error callback.
+ * @param {T} thisArg Value to use as `this` when executing `success` or
+ *     `error`.
  * @template T
  */
 ol.source.FormatVector.prototype.loadFeaturesFromURL =
-    function(url, callback, thisArg) {
+    function(url, success, error, thisArg) {
   var xhrIo = new goog.net.XhrIo();
   var type = this.format.getType();
   var responseType;
@@ -97,13 +99,13 @@ ol.source.FormatVector.prototype.loadFeaturesFromURL =
             goog.asserts.fail();
           }
           if (goog.isDefAndNotNull(source)) {
-            callback.call(thisArg, this.readFeatures(source));
+            success.call(thisArg, this.readFeatures(source));
           } else {
             this.setState(ol.source.State.ERROR);
             goog.asserts.fail();
           }
         } else {
-          this.setState(ol.source.State.ERROR);
+          error.call(thisArg);
         }
         goog.dispose(xhrIo);
       }, false, this);

src/ol/source/staticvectorsource.js

@@ -48,13 +48,15 @@ ol.source.StaticVector = function(options) {
   if (goog.isDef(options.url) || goog.isDef(options.urls)) {
     this.setState(ol.source.State.LOADING);
     if (goog.isDef(options.url)) {
-      this.loadFeaturesFromURL(options.url, this.onFeaturesLoaded_, this);
+      this.loadFeaturesFromURL(options.url,
+          this.onFeaturesLoadedSuccess_, this.onFeaturesLoadedError_, this);
     }
     if (goog.isDef(options.urls)) {
       var urls = options.urls;
       var i, ii;
       for (i = 0, ii = urls.length; i < ii; ++i) {
-        this.loadFeaturesFromURL(urls[i], this.onFeaturesLoaded_, this);
+        this.loadFeaturesFromURL(urls[i],
+            this.onFeaturesLoadedSuccess_, this.onFeaturesLoadedError_, this);
       }
     }
   }
@@ -63,11 +65,19 @@ ol.source.StaticVector = function(options) {
 goog.inherits(ol.source.StaticVector, ol.source.FormatVector);
 
 
+/**
+ * @private
+ */
+ol.source.StaticVector.prototype.onFeaturesLoadedError_ = function() {
+  this.setState(ol.source.State.ERROR);
+};
+
+
 /**
  * @param {Array.<ol.Feature>} features Features.
  * @private
  */
-ol.source.StaticVector.prototype.onFeaturesLoaded_ = function(features) {
+ol.source.StaticVector.prototype.onFeaturesLoadedSuccess_ = function(features) {
   this.addFeaturesInternal(features);
   this.setState(ol.source.State.READY);
 };

src/ol/source/tilevectorsource.js

@@ -184,6 +184,15 @@ ol.source.TileVector.prototype.loadFeatures =
   var tileRange = tileGrid.getTileRangeForExtentAndZ(extent, z);
   var tileCoord = [z, 0, 0];
   var x, y;
+  /**
+   * @param {string} tileKey Tile key.
+   * @param {Array.<ol.Feature>} features Features.
+   * @this {ol.source.TileVector}
+   */
+  function success(tileKey, features) {
+    tiles[tileKey] = features;
+    this.setState(ol.source.State.READY);
+  }
   for (x = tileRange.minX; x <= tileRange.maxX; ++x) {
     for (y = tileRange.minY; y <= tileRange.maxY; ++y) {
       var tileKey = this.getTileKeyZXY_(z, x, y);
@@ -195,16 +204,8 @@ ol.source.TileVector.prototype.loadFeatures =
         var url = tileUrlFunction(tileCoord, 1, projection);
         if (goog.isDef(url)) {
           tiles[tileKey] = [];
-          this.loadFeaturesFromURL(url, goog.partial(
-              /**
-               * @param {string} tileKey Tile key.
-               * @param {Array.<ol.Feature>} features Features.
-               * @this {ol.source.TileVector}
-               */
-              function(tileKey, features) {
-                tiles[tileKey] = features;
-                this.setState(ol.source.State.READY);
-              }, tileKey), this);
+          this.loadFeaturesFromURL(url, goog.partial(success, tileKey),
+              goog.nullFunction, this);
         }
       }
     }