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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Chart pie.
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*
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* @copyright 2016 Frédéric Massart - FMCorz.net
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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* @module core/chart_pie
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*/
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define(['core/chart_base'], function(Base) {
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/**
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* Pie chart.
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*
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* @class
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* @extends {module:core/chart_base}
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*/
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function Pie() {
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Base.prototype.constructor.apply(this, arguments);
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}
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Pie.prototype = Object.create(Base.prototype);
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/** @override */
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Pie.prototype.TYPE = 'pie';
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/**
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* Whether the chart should be displayed as doughnut or not.
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*
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* @type {Bool}
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* @protected
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*/
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Pie.prototype._doughnut = null;
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/** @override */
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Pie.prototype.create = function(Klass, data) {
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var chart = Base.prototype.create.apply(this, arguments);
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chart.setDoughnut(data.doughnut);
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return chart;
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};
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/**
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* Overridden to add appropriate colors to the series.
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*
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* @override
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*/
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Pie.prototype.addSeries = function(series) {
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if (series.getColor() === null) {
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var colors = [];
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var configColorSet = this.getConfigColorSet() || Base.prototype.COLORSET;
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for (var i = 0; i < series.getCount(); i++) {
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colors.push(configColorSet[i % configColorSet.length]);
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}
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series.setColors(colors);
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}
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return Base.prototype.addSeries.apply(this, arguments);
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};
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/**
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* Get whether the chart should be displayed as doughnut or not.
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*
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* @method getDoughnut
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* @returns {Bool}
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*/
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Pie.prototype.getDoughnut = function() {
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return this._doughnut;
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};
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/**
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* Set whether the chart should be displayed as doughnut or not.
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*
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* @method setDoughnut
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* @param {Bool} doughnut True for doughnut type, false for pie.
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*/
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Pie.prototype.setDoughnut = function(doughnut) {
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this._doughnut = Boolean(doughnut);
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};
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/**
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* Validate a series.
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*
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* Overrides parent implementation to validate that there is only
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* one series per chart instance.
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*
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* @override
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*/
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Pie.prototype._validateSeries = function() {
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if (this._series.length >= 1) {
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throw new Error('Pie charts only support one serie.');
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}
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return Base.prototype._validateSeries.apply(this, arguments);
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};
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return Pie;
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});
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