← All changes | classes/Visualizer/Module/Frontend.php +438 -58 3.0.9 → 3.7.2 View file →

		@@ -41,8 +41,16 @@
41	41	*/
42	42	private $_charts = array();
43	43
44	44	/**
	45	+ * Lazy render script.
	46	+ *
	47	+ * @access private
	48	+ * @var bool
	49	+ */
	50	+ private $lazy_render_script = false;
	51	+
	52	+ /**
45	53	* Constructor.
46	54	*
47	55	* @since 1.0.0
48	56	* @uses add_filter() To add "do_shortcode" hook for "widget_text" and "term_description" filters.
		@@ -52,9 +60,12 @@
52	60	*/
53	61	public function __construct( Visualizer_Plugin $plugin ) {
54	62	parent::__construct( $plugin );
55	63
	64	+ $this->_addAction( 'wp_print_footer_scripts', 'printFooterScripts' );
56	65	$this->_addAction( 'wp_enqueue_scripts', 'enqueueScripts' );
	66	+ $this->_addAction( 'load-index.php', 'enqueueScripts' );
	67	+ $this->_addAction( 'visualizer_enqueue_scripts', 'enqueueScripts' );
57	68	$this->_addFilter( 'visualizer_get_language', 'getLanguage' );
58	69	$this->_addShortcode( 'visualizer', 'renderChart' );
59	70
60	71	// add do_shortocde hook for widget_text filter
		@@ -67,11 +78,50 @@
67	78	add_filter( 'term_description', 'do_shortcode' );
68	79	}
69	80
70	81	add_action( 'rest_api_init', array( $this, 'endpoint_register' ) );
	82	+
	83	+ $this->_addFilter( 'script_loader_tag', 'script_loader_tag', null, 10, 3 );
71	84	}
72	85
73	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	+ /**
74	124	* Returns the language/locale.
75	125	*/
76	126	function getLanguage( $dummy, $only_language ) {
77	127	return $this->get_language();
		@@ -85,9 +135,33 @@
85	135	register_rest_route(
86	136	'visualizer/v' . VISUALIZER_REST_VERSION,
87	137	'/action/(?P<chart>\d+)/(?P<type>.+)/',
88	138	array(
89		- 'methods' => array( 'GET', 'POST' ),
	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	+ },
90	164	'callback' => array( $this, 'perform_action' ),
91	165	)
92	166	);
93	167	}
		@@ -97,16 +171,42 @@
97	171	*
98	172	* @access private
99	173	*/
100	174	private function get_actions() {
101		- return apply_filters(
102		- 'visualizer_action_buttons', array(
103		- 'print' => __( 'Print', 'visualizer' ),
104		- 'csv' => __( 'CSV', 'visualizer' ),
105		- 'xls' => __( 'Excel', 'visualizer' ),
106		- 'copy' => __( 'Copy', 'visualizer' ),
	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	+ ),
107	198	)
108	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;
109	209	}
110	210
111	211	/**
112	212	* The print button
		@@ -137,8 +237,23 @@
137	237	break;
138	238	case 'xls':
139	239	$data = $this->_getDataAs( $chart_id, 'xls' );
140	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;
141	256	default:
142	257	$data = apply_filters( 'visualizer_action_data', $data, $chart_id, $type, $params, $this );
143	258	break;
144	259	}
		@@ -154,13 +269,9 @@
154	269	*
155	270	* @access public
156	271	*/
157	272	public function enqueueScripts() {
158		- wp_register_script( 'visualizer-google-jsapi-new', '//www.gstatic.com/charts/loader.js', array(), null, true );
159		- wp_register_script( 'visualizer-google-jsapi-old', '//www.google.com/jsapi', array( 'visualizer-google-jsapi-new' ), null, true );
160		- wp_register_script( 'visualizer-render', VISUALIZER_ABSURL . 'js/render.js', array( 'visualizer-google-jsapi-old', 'jquery' ), Visualizer_Plugin::VERSION, true );
161		- wp_register_script( 'visualizer-clipboardjs', VISUALIZER_ABSURL . 'js/lib/clipboardjs/clipboard.min.js', array( 'jquery' ), Visualizer_Plugin::VERSION, true );
162		- wp_register_style( 'visualizer-front', VISUALIZER_ABSURL . 'css/front.css', array(), Visualizer_Plugin::VERSION );
	273	+ wp_register_script( 'visualizer-customization', $this->get_user_customization_js(), array(), null, true );
163	274	do_action( 'visualizer_pro_frontend_load_resources' );
164	275	}
165	276
166	277	/**
		@@ -179,26 +290,38 @@
179	290	public function renderChart( $atts ) {
180	291	global $wp_version;
181	292	$atts = shortcode_atts(
182	293	array(
183		- 'id' => false, // chart id
184		- 'class' => false, // chart class
185		- 'series' => false, // series filter hook
186		- 'data' => false, // data filter hook
187		- 'settings' => false, // data filter hook
188		- ), $atts
	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
189	306	);
190	307
191		- // if empty id or chart does not exists, then return empty string
192		- if ( ! $atts['id'] || ! ( $chart = get_post( $atts['id'] ) ) || $chart->post_type != Visualizer_Plugin::CPT_VISUALIZER ) {
	308	+ $chart_data = $this->getChartData( Visualizer_Plugin::CF_CHART_CACHE, $atts['id'] );
	309	+ // if empty chart does not exists, then return empty string.
	310	+ if ( ! $chart_data ) {
193	311	return '';
194	312	}
195	313
	314	+ $chart = $chart_data['chart'];
	315	+ $type = $chart_data['type'];
	316	+ $series = $chart_data['series'];
	317	+ // do not show the chart?
196	318	if ( ! apply_filters( 'visualizer_pro_show_chart', true, $atts['id'] ) ) {
197	319	return '';
198	320	}
199	321
200	322	// in case revisions exist.
	323	+ // phpcs:ignore WordPress.CodeAnalysis.AssignmentInCondition.Found
201	324	if ( true === ( $revisions = $this->undoRevisions( $chart->ID, true ) ) ) {
202	325	$chart = get_post( $chart->ID );
203	326	}
204	327
		@@ -204,45 +327,73 @@
204	327
205	328	$id = 'visualizer-' . $atts['id'];
206	329	$defaultClass = 'visualizer-front';
207	330	$class = apply_filters( Visualizer_Plugin::FILTER_CHART_WRAPPER_CLASS, $atts['class'], $atts['id'] );
208		- $class = $defaultClass . ' ' . $class . ' ' . 'visualizer-front-' . $atts['id'];
209		- $class = ! empty( $class ) ? ' class="' . trim( $class ) . '"' : '';
210	331
211		- $type = get_post_meta( $chart->ID, Visualizer_Plugin::CF_CHART_TYPE, true );
	332	+ $lazyClass = $atts['lazy'] === 'yes' || ctype_digit( $atts['lazy'] ) ? 'visualizer-lazy' : '';
212	333
213		- // faetch and update settings
214		- $settings = get_post_meta( $chart->ID, Visualizer_Plugin::CF_SETTINGS, true );
	334	+ $class = sprintf( '%s %s %s %s', $defaultClass, $class, 'visualizer-front-' . $atts['id'], $lazyClass );
	335	+ $attributes = array();
	336	+ if ( ! empty( $class ) ) {
	337	+ $attributes['class'] = trim( $class );
	338	+ }
	339	+
	340	+ if ( ctype_digit( $atts['lazy'] ) ) {
	341	+ $attributes['data-lazy-limit'] = $atts['lazy'];
	342	+ }
	343	+
	344	+ $chart = apply_filters( 'visualizer_schedule_refresh_chart', $chart, $chart->ID, false );
	345	+
	346	+ // Get and update settings.
	347	+ $settings = $chart_data['settings'];
215	348	if ( empty( $settings['height'] ) ) {
216	349	$settings['height'] = '400';
217	350	}
218	351
219	352	// handle series filter hooks
220		- $series = apply_filters( Visualizer_Plugin::FILTER_GET_CHART_SERIES, get_post_meta( $chart->ID, Visualizer_Plugin::CF_SERIES, true ), $chart->ID, $type );
221		- if ( ! empty( $atts['series'] ) ) {
222		- $series = apply_filters( $atts['series'], $series, $chart->ID, $type );
223		- }
	353	+ $series = apply_filters( Visualizer_Plugin::FILTER_GET_CHART_SERIES, $series, $chart->ID, $type );
	354	+
224	355	// handle settings filter hooks
225	356	$settings = apply_filters( Visualizer_Plugin::FILTER_GET_CHART_SETTINGS, $settings, $chart->ID, $type );
226		- if ( ! empty( $atts['settings'] ) ) {
227		- $settings = apply_filters( $atts['settings'], $settings, $chart->ID, $type );
	357	+
	358	+ $lazy_load = isset( $settings['lazy_load_chart'] ) ? $settings['lazy_load_chart'] : false;
	359	+ $lazy_load = apply_filters( 'visualizer_lazy_load_chart', $lazy_load, $chart->ID );
	360	+ $container_class = 'visualizer-front-container';
	361	+ if ( $lazy_load ) {
	362	+ $this->lazy_render_script = true;
	363	+ $container_class .= ' visualizer-lazy-render';
228	364	}
229	365
230	366	// handle data filter hooks
231		- $data = apply_filters( Visualizer_Plugin::FILTER_GET_CHART_DATA, unserialize( $chart->post_content ), $chart->ID, $type );
232		- if ( ! empty( $atts['data'] ) ) {
233		- $data = apply_filters( $atts['data'], $data, $chart->ID, $type );
234		- }
	367	+ $data = self::get_chart_data( $chart, $type );
235	368
236		- $id = $id . '-' . rand();
237		- $arguments = array( '', $id, $settings );
238	369	$css = '';
239		- apply_filters_ref_array( 'visualizer_pro_inline_css', array( &$arguments ) );
	370	+ $arguments = $this->get_inline_custom_css( $id, $settings );
240	371	if ( ! empty( $arguments ) ) {
241	372	$css = $arguments[0];
242		- $settings = $arguments[2];
	373	+ $settings = $arguments[1];
243	374	}
244	375
	376	+ $library = $this->load_chart_type( $chart->ID );
	377	+
	378	+ $id = $id . '-' . rand();
	379	+
	380	+ $amp = Visualizer_Plugin::instance()->getModule( Visualizer_Module_AMP::NAME );
	381	+ if ( $amp && $amp->is_amp() ) {
	382	+ return '<div data-amp-auto-lightbox-disable id="' . $id . '"' . $this->getHtmlAttributes( $attributes ) . '>' . $amp->get_chart( $chart, $data, $series, $settings ) . '</div>';
	383	+ }
	384	+
	385	+ if ( 'yes' === $atts['use_image'] ) {
	386	+ $chart_image = $chart_data['chart_image'];
	387	+ if ( $chart_image ) {
	388	+ return '<div id="' . $id . '"' . $this->getHtmlAttributes( $attributes ) . '>' . wp_get_attachment_image( $chart_image, 'full' ) . '</div>';
	389	+ }
	390	+ }
	391	+ // Unset chart image base64 string.
	392	+ if ( isset( $settings['chart-img'] ) ) {
	393	+ unset( $settings['chart-img'] );
	394	+ }
	395	+
245	396	// add chart to the array
246	397	$this->_charts[ $id ] = array(
247	398	'type' => $type,
248	399	'series' => $series,
		@@ -247,25 +398,11 @@
247	398	'type' => $type,
248	399	'series' => $series,
249	400	'settings' => $settings,
250	401	'data' => $data,
	402	+ 'library' => $library,
251	403	);
252	404
253		- // enqueue visualizer render and update render localizations
254		- wp_enqueue_script( 'visualizer-render' );
255		- wp_localize_script(
256		- 'visualizer-render', 'visualizer', array(
257		- 'charts' => $this->_charts,
258		- 'language' => $this->get_language(),
259		- 'map_api_key' => get_option( 'visualizer-map-api-key' ),
260		- 'rest_url' => version_compare( $wp_version, '4.7.0', '>=' ) ? rest_url( 'visualizer/v' . VISUALIZER_REST_VERSION . '/action/#id#/#type#/' ) : '',
261		- 'i10n' => array(
262		- 'copied' => __( 'Copied!', 'visualizer' ),
263		- ),
264		- )
265		- );
266		- wp_enqueue_style( 'visualizer-front' );
267		-
268	405	$actions_div = '';
269	406	$actions_visible = apply_filters( 'visualizer_pro_add_actions', isset( $settings['actions'] ) ? $settings['actions'] : array(), $atts['id'] );
270	407	if ( ! empty( $actions_visible ) ) {
271	408	$actions = $this->get_actions();
		@@ -277,15 +414,16 @@
277	414	$array = explode( ';', $action_type );
278	415	$key = $array[0];
279	416	$mime = end( $array );
280	417	}
281		- $label = $actions[ $key ];
282		- $actions_div .= '<a href="#" class="visualizer-action visualizer-action-' . $key . '" data-visualizer-type="' . $key . '" data-visualizer-chart-id="' . $atts['id'] . '" data-visualizer-mime="' . $mime . '" title="' . $label . '" ';
	418	+ $label = $actions[ $key ]['label'];
	419	+ $title = $actions[ $key ]['title'];
	420	+ $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 );
283	421
284	422	if ( 'copy' === $key ) {
285	423	$copy = $this->_getDataAs( $atts['id'], 'csv' );
286	424	$actions_div .= ' data-clipboard-text="' . esc_attr( $copy['csv'] ) . '"';
287		- wp_enqueue_script( 'visualizer-clipboardjs' );
	425	+ wp_enqueue_script( 'clipboard' );
288	426	}
289	427
290	428	$actions_div .= apply_filters( 'visualizer_action_attributes', '', $key, $atts['id'] );
291	429	$actions_div .= '>' . $label . '</a> &nbsp;';
		@@ -295,8 +433,250 @@
295	433	}
296	434
297	435	$actions_div .= $css;
298	436
	437	+ $_charts = array();
	438	+ $_charts_type = '';
	439	+ foreach ( $this->_charts as $id => $array ) {
	440	+ $_charts = $this->_charts;
	441	+ $library = $array['library'];
	442	+ $_charts_type = $library;
	443	+ if ( ! wp_script_is( "visualizer-render-$library", 'registered' ) ) {
	444	+ wp_register_script(
	445	+ "visualizer-render-$library",
	446	+ VISUALIZER_ABSURL . 'js/render-facade.js',
	447	+ apply_filters( 'visualizer_assets_render', array( 'jquery', 'visualizer-customization' ), true ),
	448	+ Visualizer_Plugin::VERSION,
	449	+ true
	450	+ );
	451	+ wp_enqueue_script( "visualizer-render-$library" );
	452	+ }
	453	+ }
	454	+ if ( wp_script_is( "visualizer-render-$_charts_type" ) ) {
	455	+ wp_localize_script(
	456	+ "visualizer-render-$_charts_type",
	457	+ 'visualizer',
	458	+ array(
	459	+ 'charts' => $_charts,
	460	+ 'language' => $this->get_language(),
	461	+ 'map_api_key' => get_option( 'visualizer-map-api-key' ),
	462	+ 'rest_url' => version_compare( $wp_version, '4.7.0', '>=' ) ? rest_url( 'visualizer/v' . VISUALIZER_REST_VERSION . '/action/#id#/#type#/' ) : '',
	463	+ 'wp_nonce' => wp_create_nonce( 'wp_rest' ),
	464	+ 'i10n' => array(
	465	+ 'copied' => __( 'The data has been copied to your clipboard. Hit Ctrl-V/Cmd-V in your spreadsheet editor to paste the data.', 'visualizer' ),
	466	+ ),
	467	+ 'page_type' => 'frontend',
	468	+ 'is_front' => true,
	469	+ )
	470	+ );
	471	+ }
	472	+
299	473	// return placeholder div
300		- return $actions_div . '<div id="' . $id . '"' . $class . '></div>';
	474	+ return '<div class="' . $container_class . '">' . $actions_div . '<div id="' . $id . '"' . $this->getHtmlAttributes( $attributes ) . '></div>' . $this->addSchema( $chart->ID ) . '</div>';
	475	+ }
	476	+
	477	+ /**
	478	+ * Converts the array of attributes to a string of HTML attributes.
	479	+ *
	480	+ * @since ?
	481	+ *
	482	+ * @access private
	483	+ */
	484	+ private function getHtmlAttributes( $attributes ) {
	485	+ $string = '';
	486	+ if ( ! $attributes ) {
	487	+ return $string;
	488	+ }
	489	+
	490	+ foreach ( $attributes as $name => $value ) {
	491	+ $string .= sprintf( '%s="%s"', esc_attr( $name ), esc_attr( $value ) );
	492	+ }
	493	+ return $string;
	494	+ }
	495	+
	496	+ /**
	497	+ * Adds the schema corresponding to the dataset.
	498	+ *
	499	+ * @since 3.3.2
	500	+ *
	501	+ * @access private
	502	+ */
	503	+ private function addSchema( $id ) {
	504	+ // should we show informative errors as HTML comments?
	505	+ $show_errors = apply_filters( 'visualizer_schema_show_errors', true, $id );
	506	+
	507	+ $settings = get_post_meta( $id, Visualizer_Plugin::CF_SETTINGS, true );
	508	+ $title = '';
	509	+ if ( isset( $settings['title'] ) && ! empty( $settings['title'] ) ) {
	510	+ $title = $settings['title'];
	511	+ if ( is_array( $title ) ) {
	512	+ $title = $settings['title']['text'];
	513	+ }
	514	+ }
	515	+ $title = apply_filters( 'visualizer_schema_name', $title, $id );
	516	+ if ( empty( $title ) ) {
	517	+ if ( $show_errors ) {
	518	+ return "<!-- Not showing structured data for chart $id because title is empty -->";
	519	+ }
	520	+ return '';
	521	+ }
	522	+
	523	+ $desc = '';
	524	+ if ( isset( $settings['description'] ) && ! empty( $settings['description'] ) ) {
	525	+ $desc = $settings['description'];
	526	+ }
	527	+ $desc = apply_filters( 'visualizer_schema_description', $desc, $id );
	528	+ if ( empty( $desc ) ) {
	529	+ if ( $show_errors ) {
	530	+ return "<!-- Not showing structured data for chart $id because description is empty -->";
	531	+ }
	532	+ return '';
	533	+ }
	534	+
	535	+ // descriptions below 50 chars are not allowed.
	536	+ if ( strlen( $desc ) < 50 ) {
	537	+ if ( $show_errors ) {
	538	+ return "<!-- Not showing structured data for chart $id because description is shorter than 50 characters -->";
	539	+ }
	540	+ return '';
	541	+ }
	542	+
	543	+ $license = '';
	544	+ if ( isset( $settings['license'] ) && ! empty( $settings['license'] ) ) {
	545	+ $license = $settings['license'];
	546	+ if ( is_array( $license ) ) {
	547	+ $license = $settings['license']['text'];
	548	+ }
	549	+ }
	550	+ $license = apply_filters( 'visualizer_schema_license', $license, $id );
	551	+ if ( empty( $license ) ) {
	552	+ if ( $show_errors ) {
	553	+ return "<!-- Not showing structured data for chart $id because license is empty -->";
	554	+ }
	555	+ return '';
	556	+ }
	557	+
	558	+ $creator = '';
	559	+ if ( isset( $settings['creator'] ) && ! empty( $settings['creator'] ) ) {
	560	+ $creator = $settings['creator'];
	561	+ if ( is_array( $creator ) ) {
	562	+ $creator = $settings['creator']['text'];
	563	+ }
	564	+ }
	565	+ $creator = apply_filters( 'visualizer_schema_creator', $creator, $id );
	566	+ if ( empty( $creator ) ) {
	567	+ if ( $show_errors ) {
	568	+ return "<!-- Not showing structured data for chart $id because creator is empty -->";
	569	+ }
	570	+ return '';
	571	+ }
	572	+
	573	+ $schema = apply_filters(
	574	+ 'visualizer_schema',
	575	+ '{
	576	+ "@context":"https://schema.org/",
	577	+ "@type":"Dataset",
	578	+ "name":"' . esc_html( $title ) . '",
	579	+ "description":"' . esc_html( $desc ) . '",
	580	+ "license": "' . esc_html( $license ) . '",
	581	+ "creator": {
	582	+ "@type": "Person",
	583	+ "name": "' . esc_html( $creator ) . '"
	584	+ }
	585	+ }',
	586	+ $id
	587	+ );
	588	+
	589	+ if ( empty( $schema ) ) {
	590	+ return '';
	591	+ }
	592	+
	593	+ return '<script type="application/ld+json">' . $schema . '</script>';
	594	+ }
	595	+
	596	+ /**
	597	+ * Get chart by ID.
	598	+ *
	599	+ * @param string $cache_key Cache key.
	600	+ * @param int $chart_id Chart ID.
	601	+ * @return mixed
	602	+ */
	603	+ private function getChartData( $cache_key = '', $chart_id = 0 ) {
	604	+ if ( ! $chart_id ) {
	605	+ return false;
	606	+ }
	607	+ // Create unique cache key of each chart.
	608	+ $cache_key .= '_' . $chart_id;
	609	+ // Get chart from cache.
	610	+ $chart = get_transient( $cache_key );
	611	+ if ( $chart ) {
	612	+ return $chart;
	613	+ }
	614	+
	615	+ // Get chart by ID.
	616	+ $chart = get_post( $chart_id );
	617	+ if ( $chart && Visualizer_Plugin::CPT_VISUALIZER === $chart->post_type ) {
	618	+ $settings = get_post_meta( $chart->ID, Visualizer_Plugin::CF_SETTINGS, true );
	619	+ $series = get_post_meta( $chart->ID, Visualizer_Plugin::CF_SERIES, true );
	620	+
	621	+ if ( isset( $settings['series'] ) && ! ( count( $settings['series'] ) - count( $series ) > 1 ) ) {
	622	+ $diff_total_series = abs( count( $settings['series'] ) - count( $series ) );
	623	+ if ( $diff_total_series ) {
	624	+ foreach ( range( 1, $diff_total_series ) as $k => $diff_series ) {
	625	+ $settings['series'][] = end( $settings['series'] );
	626	+ }
	627	+ }
	628	+ }
	629	+ $chart_data = array(
	630	+ 'chart' => $chart,
	631	+ 'type' => get_post_meta( $chart->ID, Visualizer_Plugin::CF_CHART_TYPE, true ),
	632	+ 'settings' => $settings,
	633	+ 'series' => $series,
	634	+ 'chart_image' => get_post_meta( $chart->ID, Visualizer_Plugin::CF_CHART_IMAGE, true ),
	635	+ );
	636	+
	637	+ // Put the results in a transient. Expire after 12 hours.
	638	+ set_transient( $cache_key, $chart_data, apply_filters( Visualizer_Plugin::FILTER_HANDLE_CACHE_EXPIRATION_TIME, 12 * HOUR_IN_SECONDS ) );
	639	+ return $chart_data;
	640	+ }
	641	+
	642	+ return false;
	643	+ }
	644	+
	645	+ /**
	646	+ * Print footer script.
	647	+ */
	648	+ public function printFooterScripts() {
	649	+ if ( $this->lazy_render_script ) {
	650	+ ?>
	651	+ <script type="text/javascript">
	652	+ var visualizerUserInteractionEvents = [
	653	+ "mouseover",
	654	+ "keydown",
	655	+ "touchmove",
	656	+ "touchstart"
	657	+ ];
	658	+
	659	+ visualizerUserInteractionEvents.forEach(function(event) {
	660	+ window.addEventListener(event, visualizerTriggerScriptLoader, { passive: true });
	661	+ });
	662	+
	663	+ function visualizerTriggerScriptLoader() {
	664	+ visualizerLoadScripts();
	665	+ visualizerUserInteractionEvents.forEach(function(event) {
	666	+ window.removeEventListener(event, visualizerTriggerScriptLoader, { passive: true });
	667	+ });
	668	+ }
	669	+
	670	+ function visualizerLoadScripts() {
	671	+ document.querySelectorAll("script[data-visualizer-script]").forEach(function(elem) {
	672	+ jQuery.getScript( elem.getAttribute("data-visualizer-script"), function() {
	673	+ elem.setAttribute("src", elem.getAttribute("data-visualizer-script"));
	674	+ elem.removeAttribute("data-visualizer-script");
	675	+ } );
	676	+ });
	677	+ }
	678	+ </script>
	679	+ <?php
	680	+ }
301	681	}
302	682	}