analytics/webcontent/bi/js/storytelling/model/extensions/LayoutModelData.js

'use strict';

/**
 * Licensed Materials - Property of IBM
 * IBM Cognos Products: Storytelling
 * (C) Copyright IBM Corp. 2017, 2019
 * US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
 */

define(['underscore'], function (_) {

	return {
		/**
   * Update the data property of a model. This function will merge the provided data with the existing ones
   * @param model LayoutModel instance to update
   * @param data object containing the data that we would like to update
   * @returns a payload useful to the LayoutMmodel._callExtensionMethod method
   */
		update: function update(model, data) {
			if (!data) {
				return null;
			}
			if (!model.data) {
				model.data = {};
			}
			var prev = _.clone(model.data);
			_.extend(model.data, data);
			return {
				event: 'change:data',
				value: data,
				previousValue: prev
			};
		}
	};
});
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