Allow drag and drop interaction to be configured with a source

test/spec/ol/interaction/draganddrop.test.js

@@ -6,7 +6,7 @@ goog.require('ol.events.Event');
 goog.require('ol.events.EventTarget');
 goog.require('ol.format.GeoJSON');
 goog.require('ol.interaction.DragAndDrop');
-
+goog.require('ol.source.Vector');
 
 where('FileReader').describe('ol.interaction.DragAndDrop', function() {
   var viewport, map, interaction;
@@ -37,6 +37,14 @@ where('FileReader').describe('ol.interaction.DragAndDrop', function() {
       expect(interaction.formatConstructors_).to.have.length(1);
     });
 
+    it('accepts a source option', function() {
+      var source = new ol.source.Vector();
+      var drop = new ol.interaction.DragAndDrop({
+        formatConstructors: [ol.format.GeoJSON],
+        source: source
+      });
+      expect(drop.source_).to.equal(source);
+    });
   });
 
   describe('#setActive()', function() {
@@ -128,6 +136,41 @@ where('FileReader').describe('ol.interaction.DragAndDrop', function() {
       expect(event.dataTransfer.dropEffect).to.be('copy');
       expect(event.propagationStopped).to.be(true);
     });
+
+    it('adds dropped features to a source', function(done) {
+      var source = new ol.source.Vector();
+      var drop = new ol.interaction.DragAndDrop({
+        formatConstructors: [ol.format.GeoJSON],
+        source: source
+      });
+      drop.setMap(map);
+
+      drop.on('addfeatures', function(evt) {
+        var features = source.getFeatures();
+        expect(features.length).to.be(1);
+        done();
+      });
+
+      var event = new ol.events.Event();
+      event.dataTransfer = {};
+      event.type = 'dragenter';
+      viewport.dispatchEvent(event);
+      event.type = 'dragover';
+      viewport.dispatchEvent(event);
+      event.type = 'drop';
+      event.dataTransfer.files = {
+        length: 1,
+        item: function() {
+          return JSON.stringify({
+            type: 'FeatureCollection',
+            features: [{type: 'Feature', id: '1'}]
+          });
+        }
+      };
+      viewport.dispatchEvent(event);
+      expect(event.dataTransfer.dropEffect).to.be('copy');
+      expect(event.propagationStopped).to.be(true);
+    });
   });
 
 });