chart.php
246 lines
| 1 | <?php |
| 2 | /** |
| 3 | * @package VikAppointments |
| 4 | * @subpackage core |
| 5 | * @author E4J s.r.l. |
| 6 | * @copyright Copyright (C) 2021 E4J s.r.l. All Rights Reserved. |
| 7 | * @license http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL |
| 8 | * @link https://vikwp.com |
| 9 | */ |
| 10 | |
| 11 | // No direct access |
| 12 | defined('ABSPATH') or die('No script kiddies please!'); |
| 13 | |
| 14 | /** |
| 15 | * Layout variables |
| 16 | * ----------------- |
| 17 | * @var VAPStatisticsWidget $widget The instance of the widget to be displayed. |
| 18 | * @var mixed $data The chart data to immediately display. |
| 19 | */ |
| 20 | extract($displayData); |
| 21 | |
| 22 | // include chart JS dependencies |
| 23 | JHtml::fetch('vaphtml.assets.chartjs'); |
| 24 | |
| 25 | JText::script('VAP_N_RESERVATIONS'); |
| 26 | JText::script('VAP_N_RESERVATIONS_1'); |
| 27 | |
| 28 | ?> |
| 29 | |
| 30 | <div class="canvas-align-bottom appointments-times-chart"> |
| 31 | <canvas></canvas> |
| 32 | </div> |
| 33 | |
| 34 | <script> |
| 35 | |
| 36 | /** |
| 37 | * Defines a pool of charts, if undefined. |
| 38 | * |
| 39 | * @var object |
| 40 | */ |
| 41 | if (typeof APPOINTMENTS_TIMES_CHARTS === 'undefined') { |
| 42 | var APPOINTMENTS_TIMES_CHARTS = {}; |
| 43 | } |
| 44 | |
| 45 | // init callbacks pool in case the caller didn't declare it |
| 46 | if (typeof WIDGET_CALLBACKS === 'undefined') { |
| 47 | var WIDGET_CALLBACKS = {}; |
| 48 | } |
| 49 | |
| 50 | (function($) { |
| 51 | 'use strict'; |
| 52 | |
| 53 | /** |
| 54 | * Register callback to be executed after |
| 55 | * completing the update request. |
| 56 | * |
| 57 | * @param mixed widget The widget selector. |
| 58 | * @param mixed data The AJAX response. |
| 59 | * @param object config The widget configuration. |
| 60 | * |
| 61 | * @return void |
| 62 | */ |
| 63 | WIDGET_CALLBACKS[<?php echo $widget->getID(); ?>] = (widget, data, config) => { |
| 64 | // get widget ID |
| 65 | var id = $(widget).attr('id'); |
| 66 | |
| 67 | // fetch color |
| 68 | if (config.color && config.color.match(/^#?[0-9a-f]{6,6}$/i)) |
| 69 | { |
| 70 | // use specified color |
| 71 | config.color = config.color.replace(/^#/, ''); |
| 72 | } |
| 73 | else |
| 74 | { |
| 75 | // use default one |
| 76 | config.color = 'e68714'; |
| 77 | } |
| 78 | |
| 79 | // in case the chart already exists and the config type doesn't match, unset the cached chart, because |
| 80 | // we have to manually recreate it, as the chart type have been changed from line to bar or viceversa |
| 81 | if (APPOINTMENTS_TIMES_CHARTS.hasOwnProperty(id) && APPOINTMENTS_TIMES_CHARTS[id].config.type != config.chart) { |
| 82 | APPOINTMENTS_TIMES_CHARTS[id].destroy(); |
| 83 | delete APPOINTMENTS_TIMES_CHARTS[id]; |
| 84 | } |
| 85 | |
| 86 | // prepare chart data |
| 87 | var chartData = { |
| 88 | labels: Object.keys(data).map((elem) => { |
| 89 | // remove literal added to keep the correct ordering of the object keys |
| 90 | return elem.replace(/^H/, ''); |
| 91 | }), |
| 92 | datasets: [], |
| 93 | }; |
| 94 | |
| 95 | chartData.datasets.push({ |
| 96 | // the label string that appears when hovering the mouse above the lines intersection points |
| 97 | label: "Dataset", |
| 98 | // the background color drawn behind the line (99 = 60% opacity) |
| 99 | backgroundColor: "#" + config.color + "99", |
| 100 | // the fill color of the line |
| 101 | borderColor: "#" + config.color, |
| 102 | // the line dataset |
| 103 | data: Object.values(data).map((elem) => { |
| 104 | if (config.chart == 'radar') { |
| 105 | return Math.round(elem.percent); |
| 106 | } |
| 107 | |
| 108 | return elem.count; |
| 109 | }), |
| 110 | }); |
| 111 | |
| 112 | // init chart from scratch if NULL |
| 113 | if (!APPOINTMENTS_TIMES_CHARTS.hasOwnProperty(id)) { |
| 114 | var options; |
| 115 | |
| 116 | if (config.chart == 'bar') { |
| 117 | // prepare chart configuration |
| 118 | options = { |
| 119 | // axes handling |
| 120 | scales: { |
| 121 | // Y Axis properties |
| 122 | yAxes: [{ |
| 123 | // make sure the chart starts at 0 |
| 124 | ticks: { |
| 125 | beginAtZero: true, |
| 126 | }, |
| 127 | }], |
| 128 | }, |
| 129 | // tooltip handling |
| 130 | tooltips: { |
| 131 | // tooltip callbacks are used to customize default texts |
| 132 | callbacks: { |
| 133 | // format the tooltip text displayed when hovering a point |
| 134 | label: (item, data) => { |
| 135 | var label = ''; |
| 136 | |
| 137 | var count = parseInt(item.value); |
| 138 | var langk = 'VAP_N_RESERVATIONS'; |
| 139 | |
| 140 | // format label by fetching singular/plural form |
| 141 | if (count == 1) { |
| 142 | label = Joomla.JText._(langk + '_1'); |
| 143 | } else { |
| 144 | label = Joomla.JText._(langk).replace(/%d/, count); |
| 145 | } |
| 146 | |
| 147 | return ' ' + label; |
| 148 | }, |
| 149 | // change label colors because, by default, the legend background is blank |
| 150 | labelColor: (tooltipItem, chart) => { |
| 151 | // get tooltip item meta data |
| 152 | var meta = chart.data.datasets[tooltipItem.datasetIndex]; |
| 153 | |
| 154 | return { |
| 155 | // use white border |
| 156 | borderColor: 'rgb(0,0,0)', |
| 157 | // use same item background color |
| 158 | backgroundColor: meta.borderColor, |
| 159 | }; |
| 160 | }, |
| 161 | }, |
| 162 | }, |
| 163 | }; |
| 164 | } else { |
| 165 | // prepare chart configuration |
| 166 | options = { |
| 167 | // tooltip handling |
| 168 | tooltips: { |
| 169 | // tooltip callbacks are used to customize default texts |
| 170 | callbacks: { |
| 171 | // format the hour title displayed above the point |
| 172 | title: (item, data) => { |
| 173 | if (item[0].value == 0) { |
| 174 | // do not show title for null items |
| 175 | return ''; |
| 176 | } |
| 177 | |
| 178 | return data.labels[item[0].index]; |
| 179 | }, |
| 180 | // format the tooltip text displayed when hovering a point |
| 181 | label: (item, data) => { |
| 182 | return Math.round(item.value) + '%'; |
| 183 | }, |
| 184 | }, |
| 185 | }, |
| 186 | }; |
| 187 | } |
| 188 | |
| 189 | // turn off legend |
| 190 | options.legend = { |
| 191 | display: false, |
| 192 | }; |
| 193 | |
| 194 | // unset duration in case we are exporting the chart |
| 195 | options.animation = { |
| 196 | duration: <?php echo isset($data) ? 0 : 1000; ?>, |
| 197 | }; |
| 198 | |
| 199 | // get 2D canvas for LINE chart |
| 200 | var canvas = $(widget).find('canvas')[0]; |
| 201 | var ctx = canvas.getContext('2d'); |
| 202 | |
| 203 | // init chart from scratch if undefined |
| 204 | APPOINTMENTS_TIMES_CHARTS[id] = new Chart(ctx, { |
| 205 | type: config.chart, |
| 206 | data: chartData, |
| 207 | options: options, |
| 208 | }); |
| 209 | } |
| 210 | // otherwise update labels and values |
| 211 | else { |
| 212 | // update chart data |
| 213 | APPOINTMENTS_TIMES_CHARTS[id].data = chartData; |
| 214 | |
| 215 | // refresh chart |
| 216 | APPOINTMENTS_TIMES_CHARTS[id].update(); |
| 217 | } |
| 218 | } |
| 219 | |
| 220 | <?php |
| 221 | |
| 222 | //////////////////////// |
| 223 | ///// EXPORT UTILS ///// |
| 224 | //////////////////////// |
| 225 | |
| 226 | if (isset($data)) |
| 227 | { |
| 228 | ?> |
| 229 | $(function() { |
| 230 | // auto-invoke callback on page loading completion |
| 231 | WIDGET_CALLBACKS[<?php echo $widget->getID(); ?>]( |
| 232 | // exported assume, there should be only one widget displayed |
| 233 | $('.appointments-times-chart'), |
| 234 | // JSON-encode the passed chart data |
| 235 | <?php echo json_encode($data); ?>, |
| 236 | // JSON-encode the widget configuration |
| 237 | <?php echo json_encode($widget->getOptions()); ?> |
| 238 | ); |
| 239 | }); |
| 240 | <?php |
| 241 | } |
| 242 | ?> |
| 243 | })(jQuery); |
| 244 | |
| 245 | </script> |
| 246 |