Merge pull request #5352 from marlowp/Issue#5030

Add getResolutions() to ol.View

src/ol/view.js

@@ -134,6 +134,12 @@ ol.View = function(opt_options) {
    */
   this.minResolution_ = resolutionConstraintInfo.minResolution;
 
+  /**
+   * @private
+   * @type {Array.<number>|undefined}
+   */
+  this.resolutions_ = options.resolutions;
+
   /**
    * @private
    * @type {number}
@@ -313,6 +319,17 @@ ol.View.prototype.getResolution = function() {
 };
 
 
+/**
+ * Get the resolutions for the view. This returns the array of resolutions
+ * passed to the constructor of the {ol.View}, or undefined if none were given.
+ * @return {Array.<number>|undefined} The resolutions of the view.
+ * @api stable
+ */
+ol.View.prototype.getResolutions = function() {
+  return this.resolutions_;
+};
+
+
 /**
  * Get the resolution for a provided extent (in map units) and size (in pixels).
  * @param {ol.Extent} extent Extent.

test/spec/ol/view.test.js

@@ -268,6 +268,23 @@ describe('ol.View', function() {
 
   });
 
+  describe('#getResolutions', function() {
+    var view;
+    var resolutions = [512, 256, 128, 64, 32, 16];
+
+    it('returns correct resolutions', function() {
+      view = new ol.View({
+        resolutions: resolutions
+      });
+      expect(view.getResolutions()).to.be(resolutions);
+    });
+
+    it('returns resolutions as undefined', function() {
+      view = new ol.View();
+      expect(view.getResolutions()).to.be(undefined);
+    });
+  });
+
   describe('#getZoom', function() {
     var view;
     beforeEach(function() {