[ol.Tile] as an isLoading method

src/ol/Tile.js

@@ -100,6 +100,7 @@ ol.Tile.prototype.getImg = function() {
  * @param {goog.events.BrowserEvent} evt Event.
  */
 ol.Tile.prototype.handleImageLoad = function(evt) {
+    this.loading_ = false;
     this.loaded_ = true;
     this.events_.triggerEvent('load');
 };
@@ -109,6 +110,7 @@ ol.Tile.prototype.handleImageLoad = function(evt) {
  * @param {goog.events.BrowserEvent} evt Event.
  */
 ol.Tile.prototype.handleImageError = function(evt) {
+    this.loading_ = false;
     this.events_.triggerEvent('error');
 };
 
@@ -120,6 +122,14 @@ ol.Tile.prototype.isLoaded = function() {
     return this.loaded_;
 };
 
+/**
+ * Is the tile being loaded?
+ * @return {boolean}
+ */
+ol.Tile.prototype.isLoading = function() {
+    return this.loading_;
+};
+
 /**
  *
  */

test/spec/ol/Tile.test.js

@@ -42,6 +42,11 @@ describe("ol.Tile", function() {
             tile.handleImageLoad();
             expect(tile.isLoaded()).toBeTruthy();
         });
+        it("unsets the loading flag", function() {
+            tile.loading_ = true;
+            tile.handleImageLoad();
+            expect(tile.isLoading()).toBeFalsy();
+        });
     });
 
     describe("handle image error", function() {
@@ -56,5 +61,10 @@ describe("ol.Tile", function() {
             tile.handleImageError();
             expect(spy).toHaveBeenCalled();
         });
+        it("unsets the loading flag", function() {
+            tile.loading_ = true;
+            tile.handleImageError();
+            expect(tile.isLoading()).toBeFalsy();
+        });
     });
 });