ABPCMS.Web/lib/chart.js/src/controllers/controller.bubble.js

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'use strict';

module.exports = function(Chart) {

	var helpers = Chart.helpers;

	Chart.defaults.bubble = {
		hover: {
			mode: 'single'
		},

		scales: {
			xAxes: [{
				type: 'linear', // bubble should probably use a linear scale by default
				position: 'bottom',
				id: 'x-axis-0' // need an ID so datasets can reference the scale
			}],
			yAxes: [{
				type: 'linear',
				position: 'left',
				id: 'y-axis-0'
			}]
		},

		tooltips: {
			callbacks: {
				title: function() {
					// Title doesn't make sense for scatter since we format the data as a point
					return '';
				},
				label: function(tooltipItem, data) {
					var datasetLabel = data.datasets[tooltipItem.datasetIndex].label || '';
					var dataPoint = data.datasets[tooltipItem.datasetIndex].data[tooltipItem.index];
					return datasetLabel + ': (' + tooltipItem.xLabel + ', ' + tooltipItem.yLabel + ', ' + dataPoint.r + ')';
				}
			}
		}
	};

	Chart.controllers.bubble = Chart.DatasetController.extend({

		dataElementType: Chart.elements.Point,

		update: function(reset) {
			var me = this;
			var meta = me.getMeta();
			var points = meta.data;

			// Update Points
			helpers.each(points, function(point, index) {
				me.updateElement(point, index, reset);
			});
		},

		updateElement: function(point, index, reset) {
			var me = this;
			var meta = me.getMeta();
			var xScale = me.getScaleForId(meta.xAxisID);
			var yScale = me.getScaleForId(meta.yAxisID);