/
core.js
executable file
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/
core.js
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'use strict';
module.exports = function() {
// Occupy the global variable of Chart, and create a simple base class
var Chart = function(context, config) {
var me = this;
// Support a jQuery'd canvas element
if (context.length && context[0].getContext) {
context = context[0];
}
// Support a canvas domnode
if (context.getContext) {
context = context.getContext('2d');
}
me.controller = new Chart.Controller(context, config, me);
return me.controller;
};
// Globally expose the defaults to allow for user updating/changing
Chart.defaults = {
global: {
responsive: true,
responsiveAnimationDuration: 0,
maintainAspectRatio: true,
events: ['mousemove', 'mouseout', 'click', 'touchstart', 'touchmove'],
hover: {
onHover: null,
mode: 'nearest',
intersect: true,
animationDuration: 400
},
onClick: null,
defaultColor: 'rgba(0,0,0,0.1)',
defaultFontColor: '#666',
defaultFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
defaultFontSize: 12,
defaultFontStyle: 'normal',
showLines: true,
// Element defaults defined in element extensions
elements: {},
// Legend callback string
legendCallback: function(chart) {
var text = [];
text.push('<ul class="' + chart.id + '-legend">');
for (var i = 0; i < chart.data.datasets.length; i++) {
text.push('<li><span style="background-color:' + chart.data.datasets[i].backgroundColor + '"></span>');
if (chart.data.datasets[i].label) {
text.push(chart.data.datasets[i].label);
}
text.push('</li>');
}
text.push('</ul>');
return text.join('');
}
}
};
Chart.Chart = Chart;
return Chart;
};