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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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/** |
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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->_addShortcode( 'visualizer', 'renderChart' ); |
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|
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add_filter( 'widget_text', 'do_shortcode' ); |
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add_filter( 'term_description', 'do_shortcode' ); |
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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( 'google-jsapi', '//www.google.com/jsapi', array(), null, true ); |
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wp_register_script( 'visualizer-render', VISUALIZER_ABSURL . 'js/render.js', array( 'google-jsapi', 'jquery' ), Visualizer_Plugin::VERSION, true ); |
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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( $atts ) { |
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$atts = shortcode_atts( array( |
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'id' => false, // chart id |
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'series' => false, // series filter hook |
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'data' => false, // data filter hook |
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), $atts ); |
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|
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// if empty id or chart does not exists, then return empty string |
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if ( !$atts['id'] || !( $chart = get_post( $atts['id'] ) ) || $chart->post_type != Visualizer_Plugin::CPT_VISUALIZER ) { |
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return ''; |
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} |
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|
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$id = 'visualizer-' . $atts['id']; |
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$type = get_post_meta( $chart->ID, Visualizer_Plugin::CF_CHART_TYPE, true ); |
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|
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// faetch and update settings |
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$settings = get_post_meta( $chart->ID, Visualizer_Plugin::CF_SETTINGS, true ); |
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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, get_post_meta( $chart->ID, Visualizer_Plugin::CF_SERIES, true ), $chart->ID, $type ); |
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if ( !empty( $atts['series'] ) ) { |
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$series = apply_filters( $atts['series'], $series, $chart->ID, $type ); |
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} |
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|
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// handle data filter hooks |
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$data = apply_filters( Visualizer_Plugin::FILTER_GET_CHART_DATA, unserialize( $chart->post_content ), $chart->ID, $type ); |
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if ( !empty( $atts['data'] ) ) { |
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$data = apply_filters( $atts['data'], $data, $chart->ID, $type ); |
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} |
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|
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// add chart to the array |
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$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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); |
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|
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// enqueue visualizer render and update render localizations |
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wp_enqueue_script( 'visualizer-render' ); |
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wp_localize_script( 'visualizer-render', 'visualizer', array( 'charts' => $this->_charts ) ); |
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|
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// return placeholder div |
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return '<div id="' . $id . '"></div>'; |
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} |
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|
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} |
