Move ol.DRAGROTATE_ANIMATION_DURATION const to a constructor option

externs/olx.js

@@ -2277,7 +2277,8 @@ olx.interaction.DragRotateAndZoomOptions.prototype.duration;
 
 
 /**
- * @typedef {{condition: (ol.events.ConditionType|undefined)}}
+ * @typedef {{condition: (ol.events.ConditionType|undefined),
+ *     duration: (number|undefined)}}
  * @api
  */
 olx.interaction.DragRotateOptions;
@@ -2293,6 +2294,14 @@ olx.interaction.DragRotateOptions;
 olx.interaction.DragRotateOptions.prototype.condition;
 
 
+/**
+ * Animation duration in milliseconds. Default is `250`.
+ * @type {number|undefined}
+ * @api
+ */
+olx.interaction.DragRotateOptions.prototype.duration;
+
+
 /**
  * @typedef {{condition: (ol.events.ConditionType|undefined),
  *     duration: (number|undefined),

src/ol/interaction/dragrotateinteraction.js

@@ -1,6 +1,5 @@
 goog.provide('ol.interaction.DragRotate');
 
-goog.require('ol');
 goog.require('ol.ViewHint');
 goog.require('ol.events.ConditionType');
 goog.require('ol.events.condition');
@@ -45,6 +44,11 @@ ol.interaction.DragRotate = function(opt_options) {
    */
   this.lastAngle_ = undefined;
 
+  /**
+   * @private
+   * @type {number}
+   */
+  this.duration_ = goog.isDef(options.duration) ? options.duration : 250;
 };
 goog.inherits(ol.interaction.DragRotate, ol.interaction.Pointer);
 
@@ -92,7 +96,7 @@ ol.interaction.DragRotate.handleUpEvent_ = function(mapBrowserEvent) {
   view.setHint(ol.ViewHint.INTERACTING, -1);
   var rotation = view.getRotation();
   ol.interaction.Interaction.rotate(map, view, rotation,
-      undefined, ol.DRAGROTATE_ANIMATION_DURATION);
+      undefined, this.duration_);
   return false;
 };
 

src/ol/ol.js

@@ -48,12 +48,6 @@ ol.DEFAULT_TILE_SIZE = 256;
 ol.DEFAULT_WMS_VERSION = '1.3.0';
 
 
-/**
- * @define {number} Drag-rotate animation duration.
- */
-ol.DRAGROTATE_ANIMATION_DURATION = 250;
-
-
 /**
  * @define {number} Hysteresis pixels.
  */