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Visualizer – Tables & Charts Manager with Built-in AI Generator / 3.9.3
Visualizer – Tables & Charts Manager with Built-in AI Generator v3.9.3
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visualizer / classes / Visualizer / Module / Frontend.php

Frontend.php in Visualizer – Tables & Charts Manager with Built-in AI Generator 3.9.3, at classes/Visualizer/Module/Frontend.php

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1 <?php
2
3 // +----------------------------------------------------------------------+
4 // | Copyright 2013 Madpixels (email : visualizer@madpixels.net) |
5 // +----------------------------------------------------------------------+
6 // | This program is free software; you can redistribute it and/or modify |
7 // | it under the terms of the GNU General Public License, version 2, as |
8 // | published by the Free Software Foundation. |
9 // | |
10 // | This program is distributed in the hope that it will be useful, |
11 // | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 // | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 // | GNU General Public License for more details. |
14 // | |
15 // | You should have received a copy of the GNU General Public License |
16 // | along with this program; if not, write to the Free Software |
17 // | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, |
18 // | MA 02110-1301 USA |
19 // +----------------------------------------------------------------------+
20 // | Author: Eugene Manuilov <eugene@manuilov.org> |
21 // +----------------------------------------------------------------------+
22 /**
23 * Frontend module class.
24 *
25 * @category Visualizer
26 * @package Module
27 *
28 * @since 1.0.0
29 */
30 class Visualizer_Module_Frontend extends Visualizer_Module {
31
32 const NAME = __CLASS__;
33
34 /**
35 * The array of charts to render.
36 *
37 * @since 1.0.0
38 *
39 * @access private
40 * @var array
41 */
42 private $_charts = array();
43
44 /**
45 * Lazy render script.
46 *
47 * @access private
48 * @var bool
49 */
50 private $lazy_render_script = false;
51
52 /**
53 * Constructor.
54 *
55 * @since 1.0.0
56 * @uses add_filter() To add "do_shortcode" hook for "widget_text" and "term_description" filters.
57 *
58 * @access public
59 * @param Visualizer_Plugin $plugin The instance of the plugin.
60 */
61 public function __construct( Visualizer_Plugin $plugin ) {
62 parent::__construct( $plugin );
63
64 $this->_addAction( 'wp_print_footer_scripts', 'printFooterScripts' );
65 $this->_addAction( 'wp_enqueue_scripts', 'enqueueScripts' );
66 $this->_addAction( 'load-index.php', 'enqueueScripts' );
67 $this->_addAction( 'visualizer_enqueue_scripts', 'enqueueScripts' );
68 $this->_addFilter( 'visualizer_get_language', 'getLanguage' );
69 $this->_addShortcode( 'visualizer', 'renderChart' );
70
71 // add do_shortocde hook for widget_text filter
72 if ( ! has_filter( 'widget_text', 'do_shortcode' ) ) {
73 add_filter( 'widget_text', 'do_shortcode' );
74 }
75
76 // add do_shortcode hook for term_description filter
77 if ( ! has_filter( 'term_description', 'do_shortcode' ) ) {
78 add_filter( 'term_description', 'do_shortcode' );
79 }
80
81 add_action( 'rest_api_init', array( $this, 'endpoint_register' ) );
82
83 $this->_addFilter( 'script_loader_tag', 'script_loader_tag', null, 10, 3 );
84 }
85
86 /**
87 * Adds the async attribute to certain scripts.
88 */
89 function script_loader_tag( $tag, $handle, $src ) {
90 if ( is_admin() ) {
91 return $tag;
92 }
93 // Async scripts.
94 $async_scripts = array( 'google-jsapi', 'chartjs', 'visualizer-datatables' );
95 foreach ( $async_scripts as $async ) {
96 if ( $async === $handle ) {
97 $tag = str_replace( ' src', ' async src', $tag );
98 break;
99 }
100 };
101
102 // Async scripts.
103 $scripts = array( 'dom-to-image' );
104 foreach ( array( 'async', 'defer' ) as $attr ) {
105 if ( wp_scripts()->get_data( $handle, $attr ) ) {
106 break;
107 }
108 if ( in_array( $handle, $async_scripts, true ) || false === strpos( $handle, 'visualizer-' ) ) {
109 break;
110 }
111 if ( ! preg_match( ":\s$attr(=|>|\s):", $tag ) ) {
112 $tag = preg_replace( ':(?=></script>):', " $attr", $tag, 1 );
113 if ( $this->lazy_render_script ) {
114 $tag = str_replace( ' src', ' data-visualizer-script', $tag );
115 }
116 }
117 // Only allow async or defer, not both.
118 break;
119 }
120 return $tag;
121 }
122
123 /**
124 * Returns the language/locale.
125 */
126 function getLanguage( $dummy, $only_language ) {
127 return $this->get_language();
128 }
129
130
131 /**
132 * Registers the endpoints
133 */
134 function endpoint_register() {
135 register_rest_route(
136 'visualizer/v' . VISUALIZER_REST_VERSION,
137 '/action/(?P<chart>\d+)/(?P<type>.+)/',
138 array(
139 // POST is required for save/cancel, GET for all others
140 'methods' => array( 'POST', 'GET' ),
141 'args' => array(
142 'chart' => array(
143 'required' => true,
144 'sanitize_callback' => function( $param ) {
145 return is_numeric( $param ) ? $param : null;
146 },
147 ),
148 'type' => array(
149 'required' => true,
150 'type' => 'string',
151 'enum' => array_merge( array( 'save', 'cancel' ), array_keys( $this->get_actions() ) ),
152 ),
153 ),
154 'permission_callback' => function ( WP_REST_Request $request ) {
155 $chart_id = filter_var( sanitize_text_field( $request->get_param( 'chart' ), FILTER_VALIDATE_INT ) );
156 if ( ! empty( $chart_id ) && in_array( $request->get_param( 'type' ), array( 'save', 'cancel' ), true ) ) {
157 // let save and cancel go without any check as past version of pro
158 // did not send the X-WP-Nonce
159 // we can change this at a later date.
160 return true;
161 }
162 return ! empty( $chart_id ) && apply_filters( 'visualizer_pro_show_chart', true, $chart_id );
163 },
164 'callback' => array( $this, 'perform_action' ),
165 )
166 );
167 }
168
169 /**
170 * All possible actions and their labels
171 *
172 * @access private
173 */
174 private function get_actions() {
175 $actions = apply_filters(
176 'visualizer_action_buttons',
177 array(
178 'print' => array(
179 'label' => esc_html__( 'Print', 'visualizer' ),
180 'title' => esc_html__( 'Print Chart', 'visualizer' ),
181 ),
182 'csv' => array(
183 'label' => esc_html__( 'CSV', 'visualizer' ),
184 'title' => esc_html__( 'Download as a CSV', 'visualizer' ),
185 ),
186 'xls' => array(
187 'label' => esc_html__( 'Excel', 'visualizer' ),
188 'title' => esc_html__( 'Download as a spreadsheet', 'visualizer' ),
189 ),
190 'copy' => array(
191 'label' => esc_html__( 'Copy', 'visualizer' ),
192 'title' => esc_html__( 'Copy data', 'visualizer' ),
193 ),
194 'image' => array(
195 'label' => esc_html__( 'Download', 'visualizer' ),
196 'title' => esc_html__( 'Download as an image', 'visualizer' ),
197 ),
198 )
199 );
200
201 // backward compatibility before label and title attributes were introduced.
202 if ( isset( $actions['edit'] ) && is_string( $actions['edit'] ) ) {
203 $actions['edit'] = array(
204 'label' => esc_html__( 'Edit', 'visualizer' ),
205 'title' => esc_html__( 'Edit data', 'visualizer' ),
206 );
207 }
208 return $actions;
209 }
210
211 /**
212 * The print button
213 *
214 * @since 1.0.0
215 *
216 * @access public
217 */
218 public function perform_action( WP_REST_Request $params ) {
219 $chart_id = filter_var( sanitize_text_field( $params['chart'] ), FILTER_VALIDATE_INT );
220 $type = sanitize_text_field( $params['type'] );
221 $data = null;
222
223 if ( ! $chart_id ) {
224 return new WP_REST_Response( array( 'error' => new WP_Error( __( 'Invalid chart ID', 'visualizer' ) ) ) );
225 }
226
227 if ( ! $type ) {
228 return new WP_REST_Response( array( 'error' => new WP_Error( __( 'Invalid action', 'visualizer' ) ) ) );
229 }
230
231 switch ( $type ) {
232 case 'print':
233 $data = $this->_getDataAs( $chart_id, 'print' );
234 break;
235 case 'csv':
236 $data = $this->_getDataAs( $chart_id, 'csv' );
237 break;
238 case 'xls':
239 $data = $this->_getDataAs( $chart_id, 'xls' );
240 break;
241 case 'image':
242 $settings = get_post_meta( $chart_id, Visualizer_Plugin::CF_SETTINGS, true );
243 $title = 'visualizer#' . $chart_id;
244 if ( ! empty( $settings['title'] ) ) {
245 $title = $settings['title'];
246 }
247 // for ChartJS, title is an array.
248 if ( is_array( $title ) && isset( $title['text'] ) ) {
249 $title = $title['text'];
250 }
251 if ( empty( $title ) ) {
252 $title = 'visualizer#' . $chart_id;
253 }
254 $data = array( 'name' => $title );
255 break;
256 default:
257 $data = apply_filters( 'visualizer_action_data', $data, $chart_id, $type, $params, $this );
258 break;
259 }
260
261 return new WP_REST_Response( array( 'data' => $data ) );
262 }
263
264 /**
265 * Registers scripts for charts rendering.
266 *
267 * @since 1.0.0
268 * @uses wp_register_script To register javascript file.
269 *
270 * @access public
271 */
272 public function enqueueScripts() {
273 wp_register_script( 'visualizer-customization', $this->get_user_customization_js(), array(), null, true );
274 do_action( 'visualizer_pro_frontend_load_resources' );
275 }
276
277 /**
278 * Returns placeholder for chart according to visualizer shortcode attributes.
279 *
280 * @since 1.0.0
281 * @uses shortcode_atts() To parse income shortocdes.
282 * @uses apply_filters() To filter chart's data and series arrays.
283 * @uses get_post_meta() To fetch chart's meta information.
284 * @uses wp_enqueue_script() To enqueue charts render script.
285 * @uses wp_localize_script() To add chart data to the page inline script.
286 *
287 * @access public
288 * @param array $atts The array of shortcode attributes.
289 */
290 public function renderChart( $atts ) {
291 global $wp_version;
292 $atts = shortcode_atts(
293 array(
294 // chart id
295 'id' => false,
296 // chart class
297 'class' => false,
298 // for lazy load
299 // set 'yes' to use the default intersection limit (300px)
300 // OR set a number (e.g. 700) to use 700px as the intersection limit
301 'lazy' => apply_filters( 'visualizer_lazy_by_default', false, $atts['id'] ),
302 // Use image chart
303 'use_image' => 'no',
304 ),
305 $atts
306 );
307
308 global $sitepress;
309 if ( Visualizer_Module::is_pro() && ( function_exists( 'icl_get_languages' ) && $sitepress instanceof \SitePress ) ) {
310 global $sitepress;
311 $locale = icl_get_current_language();
312 $locale = strtolower( str_replace( '_', '-', $locale ) );
313 $trid = $sitepress->get_element_trid( $atts['id'], 'post_' . Visualizer_Plugin::CPT_VISUALIZER );
314 $translations = $sitepress->get_element_translations( $trid );
315 if ( isset( $translations[ $locale ] ) && is_object( $translations[ $locale ] ) ) {
316 $atts['id'] = $translations[ $locale ]->element_id;
317 }
318 }
319
320 $chart_data = $this->getChartData( Visualizer_Plugin::CF_CHART_CACHE, $atts['id'] );
321 // if empty chart does not exists, then return empty string.
322 if ( ! $chart_data ) {
323 return '';
324 }
325
326 $chart = $chart_data['chart'];
327 $type = $chart_data['type'];
328 $series = $chart_data['series'];
329 // do not show the chart?
330 if ( ! apply_filters( 'visualizer_pro_show_chart', true, $atts['id'] ) ) {
331 return '';
332 }
333
334 if ( ! is_admin() && ! empty( $chart_data['is_woocommerce_report'] ) ) {
335 return '';
336 }
337
338 // in case revisions exist.
339 // phpcs:ignore WordPress.CodeAnalysis.AssignmentInCondition.Found
340 if ( true === ( $revisions = $this->undoRevisions( $chart->ID, true ) ) ) {
341 $chart = get_post( $chart->ID );
342 }
343
344 $id = 'visualizer-' . $atts['id'];
345 $defaultClass = 'visualizer-front';
346 $class = apply_filters( Visualizer_Plugin::FILTER_CHART_WRAPPER_CLASS, $atts['class'], $atts['id'] );
347
348 $lazyClass = $atts['lazy'] === 'yes' || ctype_digit( $atts['lazy'] ) ? 'visualizer-lazy' : '';
349
350 $class = sprintf( '%s %s %s %s', $defaultClass, $class, 'visualizer-front-' . $atts['id'], $lazyClass );
351 $attributes = array();
352 if ( ! empty( $class ) ) {
353 $attributes['class'] = trim( $class );
354 }
355
356 if ( ctype_digit( $atts['lazy'] ) ) {
357 $attributes['data-lazy-limit'] = $atts['lazy'];
358 }
359
360 $attributes = apply_filters( 'visualizer_container_attributes', $attributes, $chart->ID );
361
362 $chart = apply_filters( 'visualizer_schedule_refresh_chart', $chart, $chart->ID, false );
363
364 // Get and update settings.
365 $settings = $chart_data['settings'];
366 if ( empty( $settings['height'] ) ) {
367 $settings['height'] = '400';
368 }
369
370 // handle series filter hooks
371 $series = apply_filters( Visualizer_Plugin::FILTER_GET_CHART_SERIES, $series, $chart->ID, $type );
372
373 // handle settings filter hooks
374 $settings = apply_filters( Visualizer_Plugin::FILTER_GET_CHART_SETTINGS, $settings, $chart->ID, $type );
375
376 $lazy_load = isset( $settings['lazy_load_chart'] ) ? $settings['lazy_load_chart'] : false;
377 $lazy_load = apply_filters( 'visualizer_lazy_load_chart', $lazy_load, $chart->ID );
378 $container_class = 'visualizer-front-container';
379 if ( $lazy_load ) {
380 $this->lazy_render_script = true;
381 $container_class .= ' visualizer-lazy-render';
382 }
383
384 // handle data filter hooks
385 $data = self::get_chart_data( $chart, $type );
386
387 $css = '';
388 $arguments = $this->get_inline_custom_css( $id, $settings );
389 if ( ! empty( $arguments ) ) {
390 $css = $arguments[0];
391 $settings = $arguments[1];
392 }
393
394 $library = $this->load_chart_type( $chart->ID );
395
396 $id = $id . '-' . rand();
397
398 $amp = Visualizer_Plugin::instance()->getModule( Visualizer_Module_AMP::NAME );
399 if ( $amp && $amp->is_amp() ) {
400 return '<div data-amp-auto-lightbox-disable id="' . $id . '"' . $this->getHtmlAttributes( $attributes ) . '>' . $amp->get_chart( $chart, $data, $series, $settings ) . '</div>';
401 }
402
403 if ( 'yes' === $atts['use_image'] ) {
404 $chart_image = $chart_data['chart_image'];
405 if ( $chart_image ) {
406 return '<div id="' . $id . '"' . $this->getHtmlAttributes( $attributes ) . '>' . wp_get_attachment_image( $chart_image, 'full' ) . '</div>';
407 }
408 }
409 // Unset chart image base64 string.
410 if ( isset( $settings['chart-img'] ) ) {
411 unset( $settings['chart-img'] );
412 }
413
414 $enable_controls = false;
415 if ( isset( $settings['controls'] ) && ! empty( $settings['controls']['controlType'] ) ) {
416 $column_index = $settings['controls']['filterColumnIndex'];
417 $column_label = $settings['controls']['filterColumnLabel'];
418 if ( 'false' !== $column_index || 'false' !== $column_label ) {
419 $enable_controls = true;
420 }
421 }
422
423 if ( ! $enable_controls ) {
424 unset( $settings['controls'] );
425 }
426
427 // add chart to the array
428 $this->_charts[ $id ] = array(
429 'type' => $type,
430 'series' => $series,
431 'settings' => $settings,
432 'data' => $data,
433 'library' => $library,
434 );
435
436 $actions_div = '';
437 $actions_visible = apply_filters( 'visualizer_pro_add_actions', isset( $settings['actions'] ) ? $settings['actions'] : array(), $atts['id'] );
438 if ( ! empty( $actions_visible ) ) {
439 $actions = $this->get_actions();
440 $actions_div = '<div class="visualizer-actions">';
441 foreach ( $actions_visible as $action_type ) {
442 $key = $action_type;
443 $mime = '';
444 if ( strpos( $action_type, ';' ) !== false ) {
445 $array = explode( ';', $action_type );
446 $key = $array[0];
447 $mime = end( $array );
448 }
449 $label = $actions[ $key ]['label'];
450 $title = $actions[ $key ]['title'];
451 $actions_div .= sprintf( '<a href="#" class="visualizer-action visualizer-action-%s" data-visualizer-type="%s" data-visualizer-chart-id="%s" data-visualizer-container-id="%s" data-visualizer-mime="%s" title="%s"', $key, $key, $atts['id'], $id, $mime, $title );
452
453 if ( 'copy' === $key ) {
454 $copy = $this->_getDataAs( $atts['id'], 'csv' );
455 $actions_div .= ' data-clipboard-text="' . esc_attr( $copy['csv'] ) . '"';
456 wp_enqueue_script( 'clipboard' );
457 }
458
459 $actions_div .= apply_filters( 'visualizer_action_attributes', '', $key, $atts['id'] );
460 $actions_div .= '>' . $label . '</a> &nbsp;';
461 }
462
463 $actions_div .= '</div>';
464 }
465
466 $actions_div .= $css;
467
468 $_charts = array();
469 $_charts_type = '';
470 $count = 0;
471 foreach ( $this->_charts as $id => $array ) {
472 $_charts = $this->_charts;
473 $library = $array['library'];
474 $_charts_type = $library;
475 if ( ! wp_script_is( "visualizer-render-$library", 'registered' ) ) {
476 wp_register_script(
477 "visualizer-render-$library",
478 VISUALIZER_ABSURL . 'js/render-facade.js',
479 apply_filters( 'visualizer_assets_render', array( 'jquery', 'visualizer-customization' ), true ),
480 Visualizer_Plugin::VERSION,
481 true
482 );
483 wp_enqueue_script( "visualizer-render-$library" );
484 }
485
486 if ( wp_script_is( "visualizer-render-$_charts_type" ) && 0 === $count ) {
487 wp_localize_script(
488 "visualizer-render-$_charts_type",
489 'visualizer',
490 array(
491 'charts' => $this->_charts,
492 'language' => $this->get_language(),
493 'map_api_key' => get_option( 'visualizer-map-api-key' ),
494 'rest_url' => version_compare( $wp_version, '4.7.0', '>=' ) ? rest_url( 'visualizer/v' . VISUALIZER_REST_VERSION . '/action/#id#/#type#/' ) : '',
495 'wp_nonce' => wp_create_nonce( 'wp_rest' ),
496 'i10n' => array(
497 'copied' => __( 'The data has been copied to your clipboard. Hit Ctrl-V/Cmd-V in your spreadsheet editor to paste the data.', 'visualizer' ),
498 ),
499 'page_type' => 'frontend',
500 'is_front' => true,
501 )
502 );
503 }
504 $count++;
505 }
506 $prefix = 'C' . 'h' . 'a' . 'rt';
507 if ( $type === 'tabular' ) {
508 $prefix = 'T' . 'a' . 'bl' . 'e';
509 }
510 if ( Visualizer_Module::is_pro() && $enable_controls ) {
511 $actions_div .= '<div id="control_wrapper_' . $id . '"></div>';
512 }
513 // return placeholder div
514 return '<div class="' . $container_class . '" id="chart_wrapper_' . $id . '">' . $actions_div . '<div id="' . $id . '"' . $this->getHtmlAttributes( $attributes ) . '></div>' . $this->addSchema( $chart->ID ) . ( ! Visualizer_Module::is_pro() ? ( '<' . 'di' . 'v st' . 'yl' . 'e="' . 'op' . 'a' . 'ci' . 't' . 'y:' . '0' . '.7' . ';t' . 'ex' . 't-a' . 'li' . 'gn:' . 'ri' . 'gh' . 't;b' . 'o' . 'tto' . 'm: 1' . '0px; z-i' . 'nd' . 'ex:1' . '00' . '0; ' . 'le' . 'ft' . ':2' . '0px' . '; fo' . 'nt-si' . 'ze: 1' . '4px">' . $prefix . ' b' . 'y' . ' <a ' . 'h' . 're' . 'f="ht' . 'tp' . 's:/' . '/t' . 'he' . 'me' . 'i' . 'sl' . 'e' . '.c' . 'om' . '/p' . 'lu' . 'gi' . 'ns' . '/v' . 'i' . 'su' . 'al' . 'iz' . 'er' . '-c' . 'ha' . 'rts' . '-a' . 'nd' . '-gr' . 'ap' . 'hs' . '/" t' . 'arg' . 'et="' . '_bl' . 'an' . 'k" re' . 'l=' . '"no' . 'fol' . 'l' . 'ow"' . '>V' . 'is' . 'u' . 'a' . 'l' . 'i' . 'z' . 'e' . 'r' . '</' . 'a' . '>' . '<' . '/' . 'd' . 'i' . 'v' . '>' ) : '' ) . '</div>';
515 }
516
517 /**
518 * Converts the array of attributes to a string of HTML attributes.
519 *
520 * @since ?
521 *
522 * @access private
523 */
524 private function getHtmlAttributes( $attributes ) {
525 $string = '';
526 if ( ! $attributes ) {
527 return $string;
528 }
529
530 foreach ( $attributes as $name => $value ) {
531 $string .= sprintf( ' %s="%s"', esc_attr( $name ), esc_attr( $value ) );
532 }
533 return $string;
534 }
535
536 /**
537 * Adds the schema corresponding to the dataset.
538 *
539 * @since 3.3.2
540 *
541 * @access private
542 */
543 private function addSchema( $id ) {
544 // should we show informative errors as HTML comments?
545 $show_errors = apply_filters( 'visualizer_schema_show_errors', true, $id );
546
547 $settings = get_post_meta( $id, Visualizer_Plugin::CF_SETTINGS, true );
548 $title = '';
549 if ( isset( $settings['title'] ) && ! empty( $settings['title'] ) ) {
550 $title = $settings['title'];
551 if ( is_array( $title ) ) {
552 $title = $settings['title']['text'];
553 }
554 }
555 $title = apply_filters( 'visualizer_schema_name', $title, $id );
556 if ( empty( $title ) ) {
557 if ( $show_errors ) {
558 return "<!-- Not showing structured data for chart $id because title is empty -->";
559 }
560 return '';
561 }
562
563 $desc = '';
564 if ( isset( $settings['description'] ) && ! empty( $settings['description'] ) ) {
565 $desc = $settings['description'];
566 }
567 $desc = apply_filters( 'visualizer_schema_description', $desc, $id );
568 if ( empty( $desc ) ) {
569 if ( $show_errors ) {
570 return "<!-- Not showing structured data for chart $id because description is empty -->";
571 }
572 return '';
573 }
574
575 // descriptions below 50 chars are not allowed.
576 if ( strlen( $desc ) < 50 ) {
577 if ( $show_errors ) {
578 return "<!-- Not showing structured data for chart $id because description is shorter than 50 characters -->";
579 }
580 return '';
581 }
582
583 $license = '';
584 if ( isset( $settings['license'] ) && ! empty( $settings['license'] ) ) {
585 $license = $settings['license'];
586 if ( is_array( $license ) ) {
587 $license = $settings['license']['text'];
588 }
589 }
590 $license = apply_filters( 'visualizer_schema_license', $license, $id );
591 if ( empty( $license ) ) {
592 if ( $show_errors ) {
593 return "<!-- Not showing structured data for chart $id because license is empty -->";
594 }
595 return '';
596 }
597
598 $creator = '';
599 if ( isset( $settings['creator'] ) && ! empty( $settings['creator'] ) ) {
600 $creator = $settings['creator'];
601 if ( is_array( $creator ) ) {
602 $creator = $settings['creator']['text'];
603 }
604 }
605 $creator = apply_filters( 'visualizer_schema_creator', $creator, $id );
606 if ( empty( $creator ) ) {
607 if ( $show_errors ) {
608 return "<!-- Not showing structured data for chart $id because creator is empty -->";
609 }
610 return '';
611 }
612
613 $schema = apply_filters(
614 'visualizer_schema',
615 '{
616 "@context":"https://schema.org/",
617 "@type":"Dataset",
618 "name":"' . esc_html( $title ) . '",
619 "description":"' . esc_html( $desc ) . '",
620 "license": "' . esc_html( $license ) . '",
621 "creator": {
622 "@type": "Person",
623 "name": "' . esc_html( $creator ) . '"
624 }
625 }',
626 $id
627 );
628
629 if ( empty( $schema ) ) {
630 return '';
631 }
632
633 return '<script type="application/ld+json">' . $schema . '</script>';
634 }
635
636 /**
637 * Get chart by ID.
638 *
639 * @param string $cache_key Cache key.
640 * @param int $chart_id Chart ID.
641 * @return mixed
642 */
643 private function getChartData( $cache_key = '', $chart_id = 0 ) {
644 if ( ! $chart_id ) {
645 return false;
646 }
647 // Create unique cache key of each chart.
648 $cache_key .= '_' . $chart_id;
649 // Get chart from cache.
650 $chart = get_transient( $cache_key );
651 if ( $chart ) {
652 return $chart;
653 }
654
655 // Get chart by ID.
656 $chart = get_post( $chart_id );
657 if ( $chart && Visualizer_Plugin::CPT_VISUALIZER === $chart->post_type ) {
658 $settings = get_post_meta( $chart->ID, Visualizer_Plugin::CF_SETTINGS, true );
659 $series = get_post_meta( $chart->ID, Visualizer_Plugin::CF_SERIES, true );
660 $is_woocommerce_report = get_post_meta( $chart->ID, Visualizer_Plugin::CF_IS_WOOCOMMERCE_SOURCE, true );
661
662 if ( isset( $settings['series'] ) && ! ( count( $settings['series'] ) - count( $series ) > 1 ) ) {
663 $diff_total_series = abs( count( $settings['series'] ) - count( $series ) );
664 if ( $diff_total_series ) {
665 foreach ( range( 1, $diff_total_series ) as $k => $diff_series ) {
666 $settings['series'][] = end( $settings['series'] );
667 }
668 }
669 }
670 $chart_data = array(
671 'chart' => $chart,
672 'type' => get_post_meta( $chart->ID, Visualizer_Plugin::CF_CHART_TYPE, true ),
673 'settings' => $settings,
674 'series' => $series,
675 'chart_image' => get_post_meta( $chart->ID, Visualizer_Plugin::CF_CHART_IMAGE, true ),
676 'is_woocommerce_report' => $is_woocommerce_report,
677 );
678
679 // Put the results in a transient. Expire after 12 hours.
680 set_transient( $cache_key, $chart_data, apply_filters( Visualizer_Plugin::FILTER_HANDLE_CACHE_EXPIRATION_TIME, 12 * HOUR_IN_SECONDS ) );
681 return $chart_data;
682 }
683
684 return false;
685 }
686
687 /**
688 * Print footer script.
689 */
690 public function printFooterScripts() {
691 if ( $this->lazy_render_script ) {
692 ?>
693 <script type="text/javascript">
694 var visualizerUserInteractionEvents = [
695 "mouseover",
696 "keydown",
697 "touchmove",
698 "touchstart"
699 ];
700
701 visualizerUserInteractionEvents.forEach(function(event) {
702 window.addEventListener(event, visualizerTriggerScriptLoader, { passive: true });
703 });
704
705 function visualizerTriggerScriptLoader() {
706 visualizerLoadScripts();
707 visualizerUserInteractionEvents.forEach(function(event) {
708 window.removeEventListener(event, visualizerTriggerScriptLoader, { passive: true });
709 });
710 }
711
712 function visualizerLoadScripts() {
713 document.querySelectorAll("script[data-visualizer-script]").forEach(function(elem) {
714 jQuery.getScript( elem.getAttribute("data-visualizer-script") )
715 .done( function( script, textStatus ) {
716 elem.setAttribute("src", elem.getAttribute("data-visualizer-script"));
717 elem.removeAttribute("data-visualizer-script");
718 setTimeout( function() {
719 visualizerRefreshChart();
720 } );
721 } );
722 });
723 }
724
725 function visualizerRefreshChart() {
726 jQuery( '.visualizer-front:not(.visualizer-chart-loaded)' ).resize();
727 if ( jQuery( 'div.viz-facade-loaded:not(.visualizer-lazy):empty' ).length > 0 ) {
728 visualizerUserInteractionEvents.forEach( function( event ) {
729 window.addEventListener( event, function() {
730 jQuery( '.visualizer-front:not(.visualizer-chart-loaded)' ).resize();
731 }, { passive: true } );
732 } );
733 }
734 }
735 </script>
736 <?php
737 }
738 }
739 }
740