Allow to configure Extent interaction with an extent

src/ol/interaction/extent.js

@@ -76,10 +76,6 @@ ol.interaction.Extent = function(opt_options) {
     opt_options = {};
   }
 
-  if (opt_options.extent) {
-    this.setExtent(opt_options.extent);
-  }
-
   /* Inherit ol.interaction.Pointer */
   ol.interaction.Pointer.call(this, {
     handleDownEvent: ol.interaction.Extent.handleDownEvent_,
@@ -117,6 +113,10 @@ ol.interaction.Extent = function(opt_options) {
     updateWhileAnimating: true,
     updateWhileInteracting: true
   });
+
+  if (opt_options.extent) {
+    this.setExtent(opt_options.extent);
+  }
 };
 
 ol.inherits(ol.interaction.Extent, ol.interaction.Pointer);

test/spec/ol/interaction/extent.test.js

@@ -72,6 +72,19 @@ describe('ol.interaction.Extent', function() {
     event.pointerEvent.pointerId = 1;
     map.handleMapBrowserEvent(event);
   }
+
+  describe('Constructor', function() {
+
+    it('can be configured with an extent', function() {
+      expect(function() {
+        new ol.interaction.Extent({
+          extent: [-10, -10, 10, 10]
+        });
+      }).to.not.throwException();
+    });
+
+  });
+
   describe('snap to vertex', function() {
     it('snap to vertex works', function() {
       interaction.setExtent([-50, -50, 50, 50]);