ABPCMS.Web/lib/chart.js/src/core/core.helpers.js

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/* global window: false */
/* global document: false */
'use strict';

var color = require('chartjs-color');

module.exports = function(Chart) {
	// Global Chart helpers object for utility methods and classes
	var helpers = Chart.helpers = {};

	// -- Basic js utility methods
	helpers.each = function(loopable, callback, self, reverse) {
		// Check to see if null or undefined firstly.
		var i, len;
		if (helpers.isArray(loopable)) {
			len = loopable.length;
			if (reverse) {
				for (i = len - 1; i >= 0; i--) {
					callback.call(self, loopable[i], i);
				}
			} else {
				for (i = 0; i < len; i++) {
					callback.call(self, loopable[i], i);
				}
			}
		} else if (typeof loopable === 'object') {
			var keys = Object.keys(loopable);
			len = keys.length;
			for (i = 0; i < len; i++) {
				callback.call(self, loopable[keys[i]], keys[i]);
			}
		}
	};
	helpers.clone = function(obj) {
		var objClone = {};
		helpers.each(obj, function(value, key) {
			if (helpers.isArray(value)) {
				objClone[key] = value.slice(0);
			} else if (typeof value === 'object' && value !== null) {
				objClone[key] = helpers.clone(value);
			} else {
				objClone[key] = value;
			}
		});
		return objClone;
	};
	helpers.extend = function(base) {
		var setFn = function(value, key) {
			base[key] = value;
		};
		for (var i = 1, ilen = arguments.length; i < ilen; i++) {
			helpers.each(arguments[i], setFn);
		}
		return base;
	};
	// Need a special merge function to chart configs since they are now grouped
	helpers.configMerge = function(_base) {
		var base = helpers.clone(_base);
		helpers.each(Array.prototype.slice.call(arguments, 1), function(extension) {
			helpers.each(extension, function(value, key) {