/**

* Copyright 2012-2016, Plotly, Inc.

* All rights reserved.

*

* This source code is licensed under the MIT license found in the

* LICENSE file in the root directory of this source tree.

*/

'use strict';

var Plots = require('../../plots/plots');

exports.name = 'pie';

exports.plot = function(gd) {

var Pie = Plots.getModule('pie');

var cdPie = getCdModule(gd.calcdata, Pie);

if(cdPie.length) Pie.plot(gd, cdPie);

};

exports.clean = function(newFullData, newFullLayout, oldFullData, oldFullLayout) {

var hadPie = (oldFullLayout._has && oldFullLayout._has('pie'));

var hasPie = (newFullLayout._has && newFullLayout._has('pie'));

if(hadPie && !hasPie) {

oldFullLayout._pielayer.selectAll('g.trace').remove();

}

};

function getCdModule(calcdata, _module) {

var cdModule = [];

for(var i = 0; i < calcdata.length; i++) {

var cd = calcdata[i];

var trace = cd[0].trace;

if((trace._module === _module) && (trace.visible === true)) {

cdModule.push(cd);

}

}

return cdModule;

}