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

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'use strict';

module.exports = function(Chart) {

	var helpers = Chart.helpers;
	var plugins = Chart.plugins;
	var platform = Chart.platform;

	// Create a dictionary of chart types, to allow for extension of existing types
	Chart.types = {};

	// Store a reference to each instance - allowing us to globally resize chart instances on window resize.
	// Destroy method on the chart will remove the instance of the chart from this reference.
	Chart.instances = {};

	// Controllers available for dataset visualization eg. bar, line, slice, etc.
	Chart.controllers = {};

	/**
	 * Initializes the given config with global and chart default values.
	 */
	function initConfig(config) {
		config = config || {};

		// Do NOT use configMerge() for the data object because this method merges arrays
		// and so would change references to labels and datasets, preventing data updates.
		var data = config.data = config.data || {};
		data.datasets = data.datasets || [];
		data.labels = data.labels || [];

		config.options = helpers.configMerge(
			Chart.defaults.global,
			Chart.defaults[config.type],
			config.options || {});

		return config;
	}

	/**
	 * Updates the config of the chart
	 * @param chart {Chart} chart to update the options for
	 */
	function updateConfig(chart) {
		var newOptions = chart.options;

		// Update Scale(s) with options
		if (newOptions.scale) {
			chart.scale.options = newOptions.scale;
		} else if (newOptions.scales) {
			newOptions.scales.xAxes.concat(newOptions.scales.yAxes).forEach(function(scaleOptions) {
				chart.scales[scaleOptions.id].options = scaleOptions;
			});
		}

		// Tooltip
		chart.tooltip._options = newOptions.tooltips;
	}

	function positionIsHorizontal(position) {
		return position === 'top' || position === 'bottom';