visualizer / classes / Visualizer / Module / Frontend.php

Frontend.php in Visualizer – Tables & Charts Manager with Built-in AI Generator 1.5.3, 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	/**
24	* Frontend module class.
25	*
26	* @category Visualizer
27	* @package Module
28	*
29	* @since 1.0.0
30	*/
31	class Visualizer_Module_Frontend extends Visualizer_Module {
32
33	const NAME = __CLASS__;
34
35	/**
36	* The array of charts to render.
37	*
38	* @since 1.0.0
39	*
40	* @access private
41	* @var array
42	*/
43	private $_charts = array();
44
45	/**
46	* Constructor.
47	*
48	* @since 1.0.0
49	* @uses add_filter() To add "do_shortcode" hook for "widget_text" and "term_description" filters.
50	*
51	* @access public
52	* @param Visualizer_Plugin $plugin The instance of the plugin.
53	*/
54	public function __construct( Visualizer_Plugin $plugin ) {
55	parent::__construct( $plugin );
56
57	$this->_addAction( 'wp_enqueue_scripts', 'enqueueScripts' );
58	$this->_addShortcode( 'visualizer', 'renderChart' );
59
60	// add do_shortocde hook for widget_text filter
61	if ( !has_filter( 'widget_text', 'do_shortcode' ) ) {
62	add_filter( 'widget_text', 'do_shortcode' );
63	}
64
65	// add do_shortcode hook for term_description filter
66	if ( !has_filter( 'term_description', 'do_shortcode' ) ) {
67	add_filter( 'term_description', 'do_shortcode' );
68	}
69	}
70
71	/**
72	* Registers scripts for charts rendering.
73	*
74	* @since 1.0.0
75	* @uses wp_register_script To register javascript file.
76	*
77	* @access public
78	*/
79	public function enqueueScripts() {
80	wp_register_script( 'visualizer-google-jsapi', '//www.google.com/jsapi', array(), null, true );
81	wp_register_script( 'visualizer-render', VISUALIZER_ABSURL . 'js/render.js', array( 'visualizer-google-jsapi', 'jquery' ), Visualizer_Plugin::VERSION, true );
82	}
83
84	/**
85	* Returns placeholder for chart according to visualizer shortcode attributes.
86	*
87	* @since 1.0.0
88	* @uses shortcode_atts() To parse income shortocdes.
89	* @uses apply_filters() To filter chart's data and series arrays.
90	* @uses get_post_meta() To fetch chart's meta information.
91	* @uses wp_enqueue_script() To enqueue charts render script.
92	* @uses wp_localize_script() To add chart data to the page inline script.
93	*
94	* @access public
95	* @param array $atts The array of shortcode attributes.
96	*/
97	public function renderChart( $atts ) {
98	$atts = shortcode_atts( array(
99	'id' => false, // chart id
100	'class' => false, // chart class
101	'series' => false, // series filter hook
102	'data' => false, // data filter hook
103	'settings' => false, // data filter hook
104	), $atts );
105
106	// if empty id or chart does not exists, then return empty string
107	if ( !$atts['id'] \|\| !( $chart = get_post( $atts['id'] ) ) \|\| $chart->post_type != Visualizer_Plugin::CPT_VISUALIZER ) {
108	return '';
109	}
110
111	$id = 'visualizer-' . $atts['id'];
112	$class = apply_filters( Visualizer_Plugin::FILTER_CHART_WRAPPER_CLASS, $atts['class'], $atts['id'] );
113	$class = !empty( $class ) ? ' class="' . $class . '"' : '';
114
115	$type = get_post_meta( $chart->ID, Visualizer_Plugin::CF_CHART_TYPE, true );
116
117	// faetch and update settings
118	$settings = get_post_meta( $chart->ID, Visualizer_Plugin::CF_SETTINGS, true );
119	if ( empty( $settings['height'] ) ) {
120	$settings['height'] = '400';
121	}
122
123	// handle series filter hooks
124	$series = apply_filters( Visualizer_Plugin::FILTER_GET_CHART_SERIES, get_post_meta( $chart->ID, Visualizer_Plugin::CF_SERIES, true ), $chart->ID, $type );
125	if ( !empty( $atts['series'] ) ) {
126	$series = apply_filters( $atts['series'], $series, $chart->ID, $type );
127	}
128	// handle settings filter hooks
129	$settings = apply_filters( Visualizer_Plugin::FILTER_GET_CHART_SETTINGS, $settings, $chart->ID, $type );
130	if ( !empty( $atts['settings'] ) ) {
131	$settings = apply_filters( $atts['settings'], $settings, $chart->ID, $type );
132	}
133
134	// handle data filter hooks
135	$data = apply_filters( Visualizer_Plugin::FILTER_GET_CHART_DATA, unserialize( $chart->post_content ), $chart->ID, $type );
136	if ( !empty( $atts['data'] ) ) {
137	$data = apply_filters( $atts['data'], $data, $chart->ID, $type );
138	}
139
140	// add chart to the array
141	$this->_charts[$id] = array(
142	'type' => $type,
143	'series' => $series,
144	'settings' => $settings,
145	'data' => $data,
146	);
147
148	// enqueue visualizer render and update render localizations
149	wp_enqueue_script( 'visualizer-render' );
150	wp_localize_script( 'visualizer-render', 'visualizer', array( 'charts' => $this->_charts ) );
151
152	// return placeholder div
153	return '<div id="' . $id . '"' . $class . '></div>';
154	}
155
156	}