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<?php |
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|
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// +----------------------------------------------------------------------+ |
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// | Copyright 2013 Madpixels (email : visualizer@madpixels.net) | |
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// +----------------------------------------------------------------------+ |
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// | This program is free software; you can redistribute it and/or modify | |
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// | it under the terms of the GNU General Public License, version 2, as | |
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// | published by the Free Software Foundation. | |
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// | | |
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// | This program 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 this program; if not, write to the Free Software | |
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// | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, | |
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// | MA 02110-1301 USA | |
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// +----------------------------------------------------------------------+ |
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// | Author: Eugene Manuilov <eugene@manuilov.org> | |
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// +----------------------------------------------------------------------+ |
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/** |
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* Frontend module class. |
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* |
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* @category Visualizer |
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* @package Module |
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* |
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* @since 1.0.0 |
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*/ |
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class Visualizer_Module_Frontend extends Visualizer_Module { |
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|
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const NAME = __CLASS__; |
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|
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/** |
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* The array of charts to render. |
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* |
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* @since 1.0.0 |
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* |
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* @access private |
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* @var array |
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*/ |
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private $_charts = array(); |
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|
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/** |
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* Constructor. |
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* |
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* @since 1.0.0 |
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* @uses add_filter() To add "do_shortcode" hook for "widget_text" and "term_description" filters. |
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* |
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* @access public |
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* @param Visualizer_Plugin $plugin The instance of the plugin. |
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*/ |
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public function __construct( Visualizer_Plugin $plugin ) { |
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parent::__construct( $plugin ); |
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|
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$this->_addAction( 'wp_enqueue_scripts', 'enqueueScripts' ); |
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$this->_addAction( 'visualizer_enqueue_scripts', 'enqueueScripts' ); |
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$this->_addFilter( 'visualizer_get_language', 'getLanguage' ); |
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$this->_addShortcode( 'visualizer', 'renderChart' ); |
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|
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// add do_shortocde hook for widget_text filter |
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if ( ! has_filter( 'widget_text', 'do_shortcode' ) ) { |
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add_filter( 'widget_text', 'do_shortcode' ); |
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} |
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|
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// add do_shortcode hook for term_description filter |
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if ( ! has_filter( 'term_description', 'do_shortcode' ) ) { |
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add_filter( 'term_description', 'do_shortcode' ); |
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} |
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|
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add_action( 'rest_api_init', array( $this, 'endpoint_register' ) ); |
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|
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$this->_addFilter( 'script_loader_tag', 'script_loader_tag', null, 10, 3 ); |
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} |
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|
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/** |
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* Adds the async attribute to certain scripts. |
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*/ |
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function script_loader_tag( $tag, $handle, $src ) { |
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if ( is_admin() ) { |
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return $tag; |
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} |
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|
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$scripts = array( 'google-jsapi', 'visualizer-render-google-lib', 'visualizer-render-google' ); |
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|
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foreach ( $scripts as $async ) { |
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if ( $async === $handle ) { |
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$tag = str_replace( ' src', ' defer="defer" src', $tag ); |
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break; |
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} |
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} |
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return $tag; |
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} |
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|
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/** |
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* Returns the language/locale. |
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*/ |
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function getLanguage( $dummy, $only_language ) { |
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return $this->get_language(); |
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} |
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|
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|
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/** |
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* Registers the endpoints |
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*/ |
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function endpoint_register() { |
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register_rest_route( |
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'visualizer/v' . VISUALIZER_REST_VERSION, |
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'/action/(?P<chart>\d+)/(?P<type>.+)/', |
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array( |
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// POST is required for save/cancel, GET for all others |
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'methods' => array( 'POST', 'GET' ), |
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'args' => array( |
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'chart' => array( |
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'required' => true, |
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'sanitize_callback' => function( $param ) { |
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return is_numeric( $param ) ? $param : null; |
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}, |
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), |
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'type' => array( |
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'required' => true, |
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'type' => 'string', |
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'enum' => array_merge( array( 'save', 'cancel' ), array_keys( $this->get_actions() ) ), |
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), |
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), |
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'permission_callback' => function ( WP_REST_Request $request ) { |
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$chart_id = filter_var( sanitize_text_field( $request->get_param( 'chart' ), FILTER_VALIDATE_INT ) ); |
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if ( ! empty( $chart_id ) && in_array( $request->get_param( 'type' ), array( 'save', 'cancel' ), true ) ) { |
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// let save and cancel go without any check as past version of pro |
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// did not send the X-WP-Nonce |
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// we can change this at a later date. |
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return true; |
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} |
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return ! empty( $chart_id ) && apply_filters( 'visualizer_pro_show_chart', true, $chart_id ); |
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}, |
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'callback' => array( $this, 'perform_action' ), |
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) |
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); |
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} |
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|
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/** |
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* All possible actions and their labels |
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* |
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* @access private |
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*/ |
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private function get_actions() { |
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$actions = apply_filters( |
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'visualizer_action_buttons', |
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array( |
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'print' => array( |
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'label' => esc_html__( 'Print', 'visualizer' ), |
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'title' => esc_html__( 'Print Chart', 'visualizer' ), |
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), |
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'csv' => array( |
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'label' => esc_html__( 'CSV', 'visualizer' ), |
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'title' => esc_html__( 'Download as a CSV', 'visualizer' ), |
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), |
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'xls' => array( |
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'label' => esc_html__( 'Excel', 'visualizer' ), |
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'title' => esc_html__( 'Download as a spreadsheet', 'visualizer' ), |
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), |
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'copy' => array( |
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'label' => esc_html__( 'Copy', 'visualizer' ), |
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'title' => esc_html__( 'Copy data', 'visualizer' ), |
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), |
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'image' => array( |
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'label' => esc_html__( 'Download', 'visualizer' ), |
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'title' => esc_html__( 'Download as an image', 'visualizer' ), |
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), |
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) |
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); |
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|
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// backward compatibility before label and title attributes were introduced. |
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if ( isset( $actions['edit'] ) && is_string( $actions['edit'] ) ) { |
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$actions['edit'] = array( |
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'label' => esc_html__( 'Edit', 'visualizer' ), |
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'title' => esc_html__( 'Edit data', 'visualizer' ), |
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); |
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} |
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return $actions; |
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} |
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|
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/** |
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* The print button |
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* |
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* @since 1.0.0 |
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* |
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* @access public |
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*/ |
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public function perform_action( WP_REST_Request $params ) { |
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$chart_id = filter_var( sanitize_text_field( $params['chart'] ), FILTER_VALIDATE_INT ); |
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$type = sanitize_text_field( $params['type'] ); |
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$data = null; |
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|
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if ( ! $chart_id ) { |
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return new WP_REST_Response( array( 'error' => new WP_Error( __( 'Invalid chart ID', 'visualizer' ) ) ) ); |
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} |
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|
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if ( ! $type ) { |
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return new WP_REST_Response( array( 'error' => new WP_Error( __( 'Invalid action', 'visualizer' ) ) ) ); |
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} |
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|
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switch ( $type ) { |
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case 'print': |
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$data = $this->_getDataAs( $chart_id, 'print' ); |
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break; |
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case 'csv': |
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$data = $this->_getDataAs( $chart_id, 'csv' ); |
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break; |
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case 'xls': |
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$data = $this->_getDataAs( $chart_id, 'xls' ); |
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break; |
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case 'image': |
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$settings = get_post_meta( $chart_id, Visualizer_Plugin::CF_SETTINGS, true ); |
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$title = 'visualizer#' . $chart_id; |
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if ( ! empty( $settings['title'] ) ) { |
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$title = $settings['title']; |
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} |
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// for ChartJS, title is an array. |
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if ( is_array( $title ) && isset( $title['text'] ) ) { |
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$title = $title['text']; |
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} |
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if ( empty( $title ) ) { |
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$title = 'visualizer#' . $chart_id; |
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} |
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$data = array( 'name' => $title ); |
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break; |
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default: |
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$data = apply_filters( 'visualizer_action_data', $data, $chart_id, $type, $params, $this ); |
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break; |
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} |
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|
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return new WP_REST_Response( array( 'data' => $data ) ); |
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} |
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|
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/** |
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* Registers scripts for charts rendering. |
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* |
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* @since 1.0.0 |
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* @uses wp_register_script To register javascript file. |
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* |
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* @access public |
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*/ |
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public function enqueueScripts() { |
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wp_register_script( 'visualizer-customization', $this->get_user_customization_js(), array(), null, true ); |
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wp_register_style( 'visualizer-front', VISUALIZER_ABSURL . 'css/front.css', array(), Visualizer_Plugin::VERSION ); |
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do_action( 'visualizer_pro_frontend_load_resources' ); |
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} |
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|
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/** |
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* Returns placeholder for chart according to visualizer shortcode attributes. |
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* |
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* @since 1.0.0 |
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* @uses shortcode_atts() To parse income shortocdes. |
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* @uses apply_filters() To filter chart's data and series arrays. |
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* @uses get_post_meta() To fetch chart's meta information. |
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* @uses wp_enqueue_script() To enqueue charts render script. |
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* @uses wp_localize_script() To add chart data to the page inline script. |
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* |
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* @access public |
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* @param array $atts The array of shortcode attributes. |
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*/ |
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public function renderChart( $atts ) { |
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global $wp_version; |
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$atts = shortcode_atts( |
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array( |
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// chart id |
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'id' => false, |
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// chart class |
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'class' => false, |
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// for lazy load |
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// set 'yes' to use the default intersection limit (300px) |
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// OR set a number (e.g. 700) to use 700px as the intersection limit |
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'lazy' => apply_filters( 'visualizer_lazy_by_default', false, $atts['id'] ), |
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// Use image chart |
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'use_image' => 'no', |
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), |
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$atts |
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); |
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|
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$chart_data = $this->getChartData( Visualizer_Plugin::CF_CHART_CACHE, $atts['id'] ); |
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// if empty chart does not exists, then return empty string. |
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if ( ! $chart_data ) { |
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return ''; |
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} |
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|
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$chart = $chart_data['chart']; |
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$type = $chart_data['type']; |
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$series = $chart_data['series']; |
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// do not show the chart? |
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if ( ! apply_filters( 'visualizer_pro_show_chart', true, $atts['id'] ) ) { |
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return ''; |
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} |
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|
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// in case revisions exist. |
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// phpcs:ignore WordPress.CodeAnalysis.AssignmentInCondition.Found |
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if ( true === ( $revisions = $this->undoRevisions( $chart->ID, true ) ) ) { |
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$chart = get_post( $chart->ID ); |
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} |
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|
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$id = 'visualizer-' . $atts['id']; |
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$defaultClass = 'visualizer-front'; |
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$class = apply_filters( Visualizer_Plugin::FILTER_CHART_WRAPPER_CLASS, $atts['class'], $atts['id'] ); |
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|
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$lazyClass = $atts['lazy'] === 'yes' || ctype_digit( $atts['lazy'] ) ? 'visualizer-lazy' : ''; |
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|
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$class = sprintf( '%s %s %s %s', $defaultClass, $class, 'visualizer-front-' . $atts['id'], $lazyClass ); |
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$attributes = array(); |
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if ( ! empty( $class ) ) { |
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$attributes['class'] = trim( $class ); |
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} |
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|
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if ( ctype_digit( $atts['lazy'] ) ) { |
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$attributes['data-lazy-limit'] = $atts['lazy']; |
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} |
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|
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$chart = apply_filters( 'visualizer_schedule_refresh_chart', $chart, $chart->ID, false ); |
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|
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// Get and update settings. |
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$settings = $chart_data['settings']; |
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if ( empty( $settings['height'] ) ) { |
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$settings['height'] = '400'; |
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} |
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|
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// handle series filter hooks |
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$series = apply_filters( Visualizer_Plugin::FILTER_GET_CHART_SERIES, $series, $chart->ID, $type ); |
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|
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// handle settings filter hooks |
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$settings = apply_filters( Visualizer_Plugin::FILTER_GET_CHART_SETTINGS, $settings, $chart->ID, $type ); |
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|
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// handle data filter hooks |
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$data = self::get_chart_data( $chart, $type ); |
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|
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$css = ''; |
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$arguments = $this->get_inline_custom_css( $id, $settings ); |
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if ( ! empty( $arguments ) ) { |
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$css = $arguments[0]; |
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$settings = $arguments[1]; |
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} |
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|
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$library = $this->load_chart_type( $chart->ID ); |
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|
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$id = $id . '-' . rand(); |
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|
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$amp = Visualizer_Plugin::instance()->getModule( Visualizer_Module_AMP::NAME ); |
| 346 |
if ( $amp && $amp->is_amp() ) { |
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return '<div data-amp-auto-lightbox-disable id="' . $id . '"' . $this->getHtmlAttributes( $attributes ) . '>' . $amp->get_chart( $chart, $data, $series, $settings ) . '</div>'; |
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} |
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|
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if ( 'yes' === $atts['use_image'] ) { |
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$chart_image = $chart_data['chart_image']; |
| 352 |
if ( $chart_image ) { |
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return '<div id="' . $id . '"' . $this->getHtmlAttributes( $attributes ) . '>' . wp_get_attachment_image( $chart_image, 'full' ) . '</div>'; |
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} |
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} |
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|
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// add chart to the array |
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$this->_charts[ $id ] = array( |
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'type' => $type, |
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'series' => $series, |
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'settings' => $settings, |
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'data' => $data, |
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'library' => $library, |
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); |
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|
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$actions_div = ''; |
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$actions_visible = apply_filters( 'visualizer_pro_add_actions', isset( $settings['actions'] ) ? $settings['actions'] : array(), $atts['id'] ); |
| 368 |
if ( ! empty( $actions_visible ) ) { |
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$actions = $this->get_actions(); |
| 370 |
$actions_div = '<div class="visualizer-actions">'; |
| 371 |
foreach ( $actions_visible as $action_type ) { |
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$key = $action_type; |
| 373 |
$mime = ''; |
| 374 |
if ( strpos( $action_type, ';' ) !== false ) { |
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$array = explode( ';', $action_type ); |
| 376 |
$key = $array[0]; |
| 377 |
$mime = end( $array ); |
| 378 |
} |
| 379 |
$label = $actions[ $key ]['label']; |
| 380 |
$title = $actions[ $key ]['title']; |
| 381 |
$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 ); |
| 382 |
|
| 383 |
if ( 'copy' === $key ) { |
| 384 |
$copy = $this->_getDataAs( $atts['id'], 'csv' ); |
| 385 |
$actions_div .= ' data-clipboard-text="' . esc_attr( $copy['csv'] ) . '"'; |
| 386 |
wp_enqueue_script( 'clipboard' ); |
| 387 |
} |
| 388 |
|
| 389 |
$actions_div .= apply_filters( 'visualizer_action_attributes', '', $key, $atts['id'] ); |
| 390 |
$actions_div .= '>' . $label . '</a> '; |
| 391 |
} |
| 392 |
|
| 393 |
$actions_div .= '</div>'; |
| 394 |
} |
| 395 |
|
| 396 |
$actions_div .= $css; |
| 397 |
|
| 398 |
foreach ( $this->_charts as $id => $array ) { |
| 399 |
$library = $array['library']; |
| 400 |
wp_register_script( |
| 401 |
"visualizer-render-$library", |
| 402 |
VISUALIZER_ABSURL . 'js/render-facade.js', |
| 403 |
apply_filters( 'visualizer_assets_render', array( 'jquery', 'visualizer-customization' ), true ), |
| 404 |
Visualizer_Plugin::VERSION, |
| 405 |
true |
| 406 |
); |
| 407 |
|
| 408 |
wp_enqueue_script( "visualizer-render-$library" ); |
| 409 |
wp_localize_script( |
| 410 |
"visualizer-render-$library", |
| 411 |
'visualizer', |
| 412 |
array( |
| 413 |
'charts' => $this->_charts, |
| 414 |
'language' => $this->get_language(), |
| 415 |
'map_api_key' => get_option( 'visualizer-map-api-key' ), |
| 416 |
'rest_url' => version_compare( $wp_version, '4.7.0', '>=' ) ? rest_url( 'visualizer/v' . VISUALIZER_REST_VERSION . '/action/#id#/#type#/' ) : '', |
| 417 |
'wp_nonce' => wp_create_nonce( 'wp_rest' ), |
| 418 |
'i10n' => array( |
| 419 |
'copied' => __( 'The data has been copied to your clipboard. Hit Ctrl-V/Cmd-V in your spreadsheet editor to paste the data.', 'visualizer' ), |
| 420 |
), |
| 421 |
'page_type' => 'frontend', |
| 422 |
'is_front' => true, |
| 423 |
) |
| 424 |
); |
| 425 |
wp_enqueue_style( 'visualizer-front' ); |
| 426 |
} |
| 427 |
|
| 428 |
// return placeholder div |
| 429 |
return $actions_div . '<div id="' . $id . '"' . $this->getHtmlAttributes( $attributes ) . '></div>' . $this->addSchema( $chart->ID ); |
| 430 |
} |
| 431 |
|
| 432 |
/** |
| 433 |
* Converts the array of attributes to a string of HTML attributes. |
| 434 |
* |
| 435 |
* @since ? |
| 436 |
* |
| 437 |
* @access private |
| 438 |
*/ |
| 439 |
private function getHtmlAttributes( $attributes ) { |
| 440 |
$string = ''; |
| 441 |
if ( ! $attributes ) { |
| 442 |
return $string; |
| 443 |
} |
| 444 |
|
| 445 |
foreach ( $attributes as $name => $value ) { |
| 446 |
$string .= sprintf( '%s="%s"', esc_attr( $name ), esc_attr( $value ) ); |
| 447 |
} |
| 448 |
return $string; |
| 449 |
} |
| 450 |
|
| 451 |
/** |
| 452 |
* Adds the schema corresponding to the dataset. |
| 453 |
* |
| 454 |
* @since 3.3.2 |
| 455 |
* |
| 456 |
* @access private |
| 457 |
*/ |
| 458 |
private function addSchema( $id ) { |
| 459 |
// should we show informative errors as HTML comments? |
| 460 |
$show_errors = apply_filters( 'visualizer_schema_show_errors', true, $id ); |
| 461 |
|
| 462 |
$settings = get_post_meta( $id, Visualizer_Plugin::CF_SETTINGS, true ); |
| 463 |
$title = ''; |
| 464 |
if ( isset( $settings['title'] ) && ! empty( $settings['title'] ) ) { |
| 465 |
$title = $settings['title']; |
| 466 |
if ( is_array( $title ) ) { |
| 467 |
$title = $settings['title']['text']; |
| 468 |
} |
| 469 |
} |
| 470 |
$title = apply_filters( 'visualizer_schema_name', $title, $id ); |
| 471 |
if ( empty( $title ) ) { |
| 472 |
if ( $show_errors ) { |
| 473 |
return "<!-- Not showing structured data for chart $id because title is empty -->"; |
| 474 |
} |
| 475 |
return ''; |
| 476 |
} |
| 477 |
|
| 478 |
$desc = ''; |
| 479 |
if ( isset( $settings['description'] ) && ! empty( $settings['description'] ) ) { |
| 480 |
$desc = $settings['description']; |
| 481 |
} |
| 482 |
$desc = apply_filters( 'visualizer_schema_description', $desc, $id ); |
| 483 |
if ( empty( $desc ) ) { |
| 484 |
if ( $show_errors ) { |
| 485 |
return "<!-- Not showing structured data for chart $id because description is empty -->"; |
| 486 |
} |
| 487 |
return ''; |
| 488 |
} |
| 489 |
|
| 490 |
// descriptions below 50 chars are not allowed. |
| 491 |
if ( strlen( $desc ) < 50 ) { |
| 492 |
if ( $show_errors ) { |
| 493 |
return "<!-- Not showing structured data for chart $id because description is shorter than 50 characters -->"; |
| 494 |
} |
| 495 |
return ''; |
| 496 |
} |
| 497 |
|
| 498 |
$license = ''; |
| 499 |
if ( isset( $settings['license'] ) && ! empty( $settings['license'] ) ) { |
| 500 |
$license = $settings['license']; |
| 501 |
if ( is_array( $license ) ) { |
| 502 |
$license = $settings['license']['text']; |
| 503 |
} |
| 504 |
} |
| 505 |
$license = apply_filters( 'visualizer_schema_license', $license, $id ); |
| 506 |
if ( empty( $license ) ) { |
| 507 |
if ( $show_errors ) { |
| 508 |
return "<!-- Not showing structured data for chart $id because license is empty -->"; |
| 509 |
} |
| 510 |
return ''; |
| 511 |
} |
| 512 |
|
| 513 |
$creator = ''; |
| 514 |
if ( isset( $settings['creator'] ) && ! empty( $settings['creator'] ) ) { |
| 515 |
$creator = $settings['creator']; |
| 516 |
if ( is_array( $creator ) ) { |
| 517 |
$creator = $settings['creator']['text']; |
| 518 |
} |
| 519 |
} |
| 520 |
$creator = apply_filters( 'visualizer_schema_creator', $creator, $id ); |
| 521 |
if ( empty( $creator ) ) { |
| 522 |
if ( $show_errors ) { |
| 523 |
return "<!-- Not showing structured data for chart $id because creator is empty -->"; |
| 524 |
} |
| 525 |
return ''; |
| 526 |
} |
| 527 |
|
| 528 |
$schema = apply_filters( |
| 529 |
'visualizer_schema', |
| 530 |
'{ |
| 531 |
"@context":"https://schema.org/", |
| 532 |
"@type":"Dataset", |
| 533 |
"name":"' . esc_html( $title ) . '", |
| 534 |
"description":"' . esc_html( $desc ) . '", |
| 535 |
"license": "' . esc_html( $license ) . '", |
| 536 |
"creator": { |
| 537 |
"@type": "Person", |
| 538 |
"name": "' . esc_html( $creator ) . '" |
| 539 |
} |
| 540 |
}', |
| 541 |
$id |
| 542 |
); |
| 543 |
|
| 544 |
if ( empty( $schema ) ) { |
| 545 |
return ''; |
| 546 |
} |
| 547 |
|
| 548 |
return '<script type="application/ld+json">' . $schema . '</script>'; |
| 549 |
} |
| 550 |
|
| 551 |
/** |
| 552 |
* Get chart by ID. |
| 553 |
* |
| 554 |
* @param string $cache_key Cache key. |
| 555 |
* @param int $chart_id Chart ID. |
| 556 |
* @return mixed |
| 557 |
*/ |
| 558 |
private function getChartData( $cache_key = '', $chart_id = 0 ) { |
| 559 |
if ( ! $chart_id ) { |
| 560 |
return false; |
| 561 |
} |
| 562 |
// Create unique cache key of each chart. |
| 563 |
$cache_key .= '_' . $chart_id; |
| 564 |
// Get chart from cache. |
| 565 |
$chart = get_transient( $cache_key ); |
| 566 |
if ( $chart ) { |
| 567 |
return $chart; |
| 568 |
} |
| 569 |
|
| 570 |
// Get chart by ID. |
| 571 |
$chart = get_post( $chart_id ); |
| 572 |
if ( $chart && Visualizer_Plugin::CPT_VISUALIZER === $chart->post_type ) { |
| 573 |
$chart_data = array( |
| 574 |
'chart' => $chart, |
| 575 |
'type' => get_post_meta( $chart->ID, Visualizer_Plugin::CF_CHART_TYPE, true ), |
| 576 |
'settings' => get_post_meta( $chart->ID, Visualizer_Plugin::CF_SETTINGS, true ), |
| 577 |
'series' => get_post_meta( $chart->ID, Visualizer_Plugin::CF_SERIES, true ), |
| 578 |
'chart_image' => get_post_meta( $chart->ID, Visualizer_Plugin::CF_CHART_IMAGE, true ), |
| 579 |
); |
| 580 |
// Put the results in a transient. Expire after 12 hours. |
| 581 |
set_transient( $cache_key, $chart_data, apply_filters( Visualizer_Plugin::FILTER_HANDLE_CACHE_EXPIRATION_TIME, 12 * HOUR_IN_SECONDS ) ); |
| 582 |
return $chart_data; |
| 583 |
} |
| 584 |
|
| 585 |
return false; |
| 586 |
} |
| 587 |
} |
| 588 |
|
