Configure ol.interaction.DragZoom with options

src/objectliterals.jsdoc

@@ -180,6 +180,11 @@
  * @property {ol.interaction.ConditionType|undefined} condition Condition.
  */
 
+/**
+ * @typedef {Object} ol.interaction.DragZoomOptions
+ * @property {ol.interaction.ConditionType|undefined} condition Condition.
+ */
+
 /**
  * Interactions for the map. Default is true for all options.
  * @typedef {Object} ol.interaction.DefaultsOptions

src/ol/interaction/dragzoominteraction.js

@@ -10,6 +10,7 @@ goog.require('ol.control.DragBox');
 goog.require('ol.extent');
 goog.require('ol.interaction.ConditionType');
 goog.require('ol.interaction.Drag');
+goog.require('ol.interaction.condition');
 
 
 /**
@@ -30,17 +31,20 @@ ol.SHIFT_DRAG_ZOOM_HYSTERESIS_PIXELS_SQUARED =
 /**
  * @constructor
  * @extends {ol.interaction.Drag}
- * @param {ol.interaction.ConditionType} condition Condition.
+ * @param {ol.interaction.DragZoomOptions=} opt_options Options.
  */
-ol.interaction.DragZoom = function(condition) {
+ol.interaction.DragZoom = function(opt_options) {
 
   goog.base(this);
 
+  var options = goog.isDef(opt_options) ? opt_options : {};
+
   /**
    * @private
    * @type {ol.interaction.ConditionType}
    */
-  this.condition_ = condition;
+  this.condition_ = goog.isDef(options.condition) ?
+      options.condition : ol.interaction.condition.shiftKeyOnly;
 
   /**
    * @type {ol.control.DragBox}

src/ol/interaction/interactiondefaults.js

@@ -87,8 +87,7 @@ ol.interaction.defaults = function(opt_options, opt_interactions) {
   var shiftDragZoom = goog.isDef(options.shiftDragZoom) ?
       options.shiftDragZoom : true;
   if (shiftDragZoom) {
-    interactions.push(
-        new ol.interaction.DragZoom(ol.interaction.condition.shiftKeyOnly));
+    interactions.push(new ol.interaction.DragZoom());
   }
 
   if (goog.isDef(opt_interactions)) {