| 1 |
<?php |
| 2 |
/** |
| 3 |
* Plugin Name: Easy Footnotes |
| 4 |
* Plugin URI: https://jasonyingling.me/easy-footnotes-wordpress/ |
| 5 |
* Description: Easily add footnotes to your posts with a simple shortcode. |
| 6 |
* Text Domain: easy-footnotes |
| 7 |
* Version: 1.1.14 |
| 8 |
* Author: Jason Yingling |
| 9 |
* Author URI: https://jasonyingling.me |
| 10 |
* License: GPL2 |
| 11 |
* |
| 12 |
* @package easy-footnotes |
| 13 |
*/ |
| 14 |
|
| 15 |
/* |
| 16 |
Copyright 2018 Jason Yingling (email : yingling017@gmail.com) |
| 17 |
|
| 18 |
This program is free software; you can redistribute it and/or modify |
| 19 |
it under the terms of the GNU General Public License, version 2, as |
| 20 |
published by the Free Software Foundation. |
| 21 |
|
| 22 |
This program is distributed in the hope that it will be useful, |
| 23 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 24 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 25 |
GNU General Public License for more details. |
| 26 |
|
| 27 |
You should have received a copy of the GNU General Public License |
| 28 |
along with this program; if not, write to the Free Software |
| 29 |
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 30 |
*/ |
| 31 |
/** |
| 32 |
* The Easy Footnotes class. In camel case. Because I didn't follow WPCS way back when. |
| 33 |
*/ |
| 34 |
class easyFootnotes { |
| 35 |
|
| 36 |
/** |
| 37 |
* Add label option using add_option if it does not already exist. |
| 38 |
* |
| 39 |
* @var array $footnotes An array for the footnotes to be stored. |
| 40 |
*/ |
| 41 |
public $footnotes = array(); |
| 42 |
public $footnoteCount = 0; |
| 43 |
public $prevPost; |
| 44 |
public $footnoteOptions; |
| 45 |
public $footnoteLookup = array(); |
| 46 |
public $usedFootnoteNumbers = array(); |
| 47 |
|
| 48 |
private $footnoteSettings; |
| 49 |
|
| 50 |
private $version = '1.1.14'; |
| 51 |
|
| 52 |
/** |
| 53 |
* Constructing the initial plugin options, shortcodes, and hooks. |
| 54 |
*/ |
| 55 |
public function __construct() { |
| 56 |
$this->footnoteSettings = array( |
| 57 |
'footnoteLabel' => 'Footnotes', |
| 58 |
'useLabel' => false, |
| 59 |
'hide_easy_footnote_after_posts' => false, |
| 60 |
'show_easy_footnote_on_front' => false, |
| 61 |
'reset_footnotes' => false, |
| 62 |
'combine_duplicate_footnotes' => false, |
| 63 |
); |
| 64 |
|
| 65 |
add_option( 'easy_footnotes_options', $this->footnoteSettings ); |
| 66 |
add_shortcode( 'note', array( $this, 'easy_footnote_shortcode' ) ); |
| 67 |
add_shortcode( 'efn_note', array( $this, 'easy_footnote_shortcode' ) ); |
| 68 |
add_shortcode( 'efn_reset', array( $this, 'short_code_reset' ) ); |
| 69 |
add_filter( 'the_content', array( $this, 'easy_footnote_after_content' ), 20 ); |
| 70 |
|
| 71 |
$this->footnoteOptions = get_option( 'easy_footnotes_options' ); |
| 72 |
if ( isset( $this->footnoteOptions['reset_footnotes'] ) && $this->footnoteOptions['reset_footnotes'] || ( ! isset( $this->footnoteOptions[ 'combine_duplicate_footnotes' ] ) || $this->footnoteOptions[ 'combine_duplicate_footnotes' ] === false ) ) { |
| 73 |
add_filter( 'the_content', array( $this, 'easy_footnote_reset' ), 999 ); |
| 74 |
} |
| 75 |
|
| 76 |
add_action( 'wp_enqueue_scripts', array( $this, 'register_qtip_scripts' ) ); |
| 77 |
add_action( 'admin_menu', array( $this, 'easy_footnotes_admin_actions' ) ); |
| 78 |
add_action( 'admin_enqueue_scripts', array( $this, 'easy_footnotes_admin_scripts' ) ); |
| 79 |
add_action( 'init', array($this, 'efn_load_textdomain') ); |
| 80 |
|
| 81 |
$this->footnoteOptions = get_option( 'easy_footnotes_options' ); |
| 82 |
} |
| 83 |
|
| 84 |
/** |
| 85 |
* Registering the scripts and styles used by jQuery qTip. |
| 86 |
*/ |
| 87 |
public function register_qtip_scripts() { |
| 88 |
wp_register_script( 'imagesloaded', plugins_url( '/assets/qtip/imagesloaded.pkgd.min.js', __FILE__ ), array(), $this->version, true ); |
| 89 |
wp_register_script( 'qtip', plugins_url( '/assets/qtip/jquery.qtip.min.js', __FILE__ ), array( 'jquery', 'imagesloaded' ), $this->version, true ); |
| 90 |
wp_register_script( 'qtipcall', plugins_url( '/assets/qtip/jquery.qtipcall.js', __FILE__ ), array( 'jquery', 'qtip' ), $this->version, true ); |
| 91 |
wp_register_style( 'qtipstyles', plugins_url( '/assets/qtip/jquery.qtip.min.css', __FILE__ ), array(), $this->version, false ); |
| 92 |
wp_register_style( 'easyfootnotescss', plugins_url( '/assets/easy-footnotes.css', __FILE__ ), array(), $this->version, false ); |
| 93 |
} |
| 94 |
|
| 95 |
/** |
| 96 |
* Create the Easy Footnotes shortcode. |
| 97 |
* |
| 98 |
* @param array $atts Shortcode attributes. |
| 99 |
* @param string $content Content within the shortcode. |
| 100 |
*/ |
| 101 |
public function easy_footnote_shortcode( $atts, $content = null ) { |
| 102 |
if ( isset( $this->footnoteOptions['show_easy_footnote_on_front'] ) && $this->footnoteOptions['show_easy_footnote_on_front'] ) { |
| 103 |
$efn_show_on_front = is_front_page(); |
| 104 |
} else { |
| 105 |
$efn_show_on_front = false; |
| 106 |
} |
| 107 |
|
| 108 |
wp_enqueue_style( 'qtipstyles' ); |
| 109 |
wp_enqueue_style( 'easyfootnotescss' ); |
| 110 |
wp_enqueue_script( 'imagesloaded' ); |
| 111 |
wp_enqueue_script( 'qtip' ); |
| 112 |
wp_enqueue_script( 'qtipcall' ); |
| 113 |
wp_enqueue_style( 'dashicons' ); |
| 114 |
|
| 115 |
// Accept optional custom number attribute |
| 116 |
$atts = shortcode_atts( |
| 117 |
array( |
| 118 |
'num' => null |
| 119 |
), |
| 120 |
$atts |
| 121 |
); |
| 122 |
|
| 123 |
$post_id = get_the_ID(); |
| 124 |
|
| 125 |
$content = do_shortcode( $content ); |
| 126 |
|
| 127 |
$content_id = md5( preg_replace("/[^A-Za-z0-9 ]/", '', wp_strip_all_tags( html_entity_decode( $content ) ) ) ); |
| 128 |
|
| 129 |
if ( isset( $this->footnoteOptions[ 'combine_duplicate_footnotes' ] ) && $this->footnoteOptions[ 'combine_duplicate_footnotes' ] === true ) { |
| 130 |
/** |
| 131 |
* Search for existing footnote for removing duplicate |
| 132 |
* Also add the same numbers to duplicate footnotes |
| 133 |
*/ |
| 134 |
if (!isset($this->usedFootnoteNumbers) ) { |
| 135 |
$this->usedFootnoteNumbers = array(); |
| 136 |
} |
| 137 |
if (!isset($this->footnoteLookup)) { |
| 138 |
$this->footnoteLookup = array(); |
| 139 |
} |
| 140 |
} |
| 141 |
|
| 142 |
|
| 143 |
// If a custom number is provided, use that number and mark it as used |
| 144 |
if ( ! empty( $atts['num'] ) ) { |
| 145 |
$footnote_number = intval( $atts['num'] ); |
| 146 |
$this->usedFootnoteNumbers[] = $footnote_number; // Track custom number |
| 147 |
$this->footnoteLookup[$content_id] = $footnote_number; |
| 148 |
$this->footnotes[$footnote_number] = $content; |
| 149 |
} elseif ( isset( $this->footnoteLookup[$content_id] ) ) { |
| 150 |
if ( isset( $this->footnoteOptions[ 'combine_duplicate_footnotes' ] ) && $this->footnoteOptions[ 'combine_duplicate_footnotes' ] === true ) { |
| 151 |
// Use existing footnote number for duplicate content |
| 152 |
$footnote_number = $this->footnoteLookup[$content_id]; |
| 153 |
} else { |
| 154 |
$this->footnoteCount++; |
| 155 |
$footnote_number = $this->footnoteCount; |
| 156 |
$this->footnotes[$footnote_number] = $content; |
| 157 |
} |
| 158 |
} else { |
| 159 |
// Auto-increment for new footnotes, skipping used numbers |
| 160 |
do { |
| 161 |
$this->footnoteCount++; |
| 162 |
} while ( in_array( $this->footnoteCount, $this->usedFootnoteNumbers ) ); |
| 163 |
|
| 164 |
$footnote_number = $this->footnoteCount; |
| 165 |
$this->footnoteLookup[$content_id] = $footnote_number; |
| 166 |
$this->usedFootnoteNumbers[] = $footnote_number; // Mark as used |
| 167 |
$this->footnotes[$footnote_number] = $content; |
| 168 |
} |
| 169 |
|
| 170 |
// Generate the correct footnote link with the correct number |
| 171 |
$footnoteLink = (is_singular() || $efn_show_on_front) && is_main_query() |
| 172 |
? '#easy-footnote-bottom-' . $footnote_number . '-' . $post_id |
| 173 |
: get_permalink($post_id) . '#easy-footnote-bottom-' . $footnote_number . '-' . $post_id; |
| 174 |
|
| 175 |
// Now generate the footnote markup with the correct number and link |
| 176 |
$footnoteContent = "<span id='easy-footnote-" . esc_attr($footnote_number) . '-' . $post_id |
| 177 |
. "' class='easy-footnote-margin-adjust'></span><span class='easy-footnote'>" |
| 178 |
. "<a href='" . esc_url($footnoteLink) . "' title='" . htmlspecialchars($content, ENT_QUOTES) |
| 179 |
. "'><sup>" . esc_html($footnote_number) . "</sup></a></span>"; |
| 180 |
|
| 181 |
return $footnoteContent; |
| 182 |
} |
| 183 |
|
| 184 |
/** |
| 185 |
* The content of a particular footnote. |
| 186 |
* |
| 187 |
* @param string $content The content from a particular call of the shortcode. |
| 188 |
*/ |
| 189 |
public function easy_footnote_content( $content ) { |
| 190 |
$this->footnotes[ $this->footnoteCount ] = $content; |
| 191 |
|
| 192 |
return $this->footnotes; |
| 193 |
} |
| 194 |
|
| 195 |
/** |
| 196 |
* Display the list of footnotes after the post content. |
| 197 |
* |
| 198 |
* @param string $content The content of the current post. |
| 199 |
*/ |
| 200 |
public function easy_footnote_after_content( $content ) { |
| 201 |
if ( isset( $this->footnoteOptions['hide_easy_footnote_after_posts'] ) && $this->footnoteOptions['hide_easy_footnote_after_posts'] ) { |
| 202 |
return $content; |
| 203 |
} |
| 204 |
|
| 205 |
if ( isset( $this->footnoteOptions['show_easy_footnote_on_front'] ) && $this->footnoteOptions['show_easy_footnote_on_front'] ) { |
| 206 |
$efn_show_on_front = is_front_page() || is_home(); |
| 207 |
} else { |
| 208 |
$efn_show_on_front = false; |
| 209 |
} |
| 210 |
|
| 211 |
if ( ( is_singular() || $efn_show_on_front ) && is_main_query() ) { |
| 212 |
$footnotesInsert = $this->footnotes; |
| 213 |
|
| 214 |
$footnoteCopy = ''; |
| 215 |
$efn_output = ''; |
| 216 |
|
| 217 |
$useLabel = isset( $this->footnoteOptions['useLabel'] ) ? $this->footnoteOptions['useLabel'] : false; |
| 218 |
$efLabel = isset($this->footnoteOptions['footnoteLabel'] ) ? $this->footnoteOptions['footnoteLabel'] : __( 'Footnotes', 'easy-footnotes' ); |
| 219 |
|
| 220 |
$post_id = get_the_ID(); |
| 221 |
|
| 222 |
// Create a new array to track used footnotes and their numbers |
| 223 |
$footnote_number = 1; |
| 224 |
|
| 225 |
// sort footnotes according to numbers |
| 226 |
ksort($footnotesInsert); |
| 227 |
|
| 228 |
foreach ( $footnotesInsert as $count => $footnote ) { |
| 229 |
|
| 230 |
if ( isset( $this->footnoteOptions[ 'combine_duplicate_footnotes' ] ) && $this->footnoteOptions[ 'combine_duplicate_footnotes' ] === true ) { |
| 231 |
// If the footnote is already in the lookup, use its number |
| 232 |
if ( isset( $this->footnoteLookup[$footnote] ) ) { |
| 233 |
$count = $this->footnoteLookup[$footnote]; |
| 234 |
} else { |
| 235 |
// Skip custom numbers that were already used |
| 236 |
while ( in_array( $footnote_number, $this->usedFootnoteNumbers ) ) { |
| 237 |
$footnote_number++; |
| 238 |
} |
| 239 |
} |
| 240 |
} |
| 241 |
// Generate back-to-top link and the footnote item |
| 242 |
$footnoteCopy .= '<li class="easy-footnote-single"><span id="easy-footnote-bottom-' . esc_attr( $count ) . '-' . $post_id . '" class="easy-footnote-margin-adjust"></span>' . wp_kses_post( $footnote ) . '<a class="easy-footnote-to-top" href="' . esc_url( '#easy-footnote-' . $count . '-' . $post_id ) . '"></a></li>'; |
| 243 |
} |
| 244 |
if ( ! empty( $footnotesInsert ) ) { |
| 245 |
if ( true === $useLabel ) { |
| 246 |
$footnote_label = '<div class="easy-footnote-title"><h4>' . esc_html( $efLabel ) . '</h4></div>'; |
| 247 |
// Filter for editing footnote label markup and output. |
| 248 |
$footnote_label = apply_filters( 'efn_footnote_label', $footnote_label, $efLabel ); |
| 249 |
|
| 250 |
$efn_output .= $footnote_label; |
| 251 |
} |
| 252 |
|
| 253 |
$footnote_content = ''; |
| 254 |
|
| 255 |
// Add filter before footnote list. |
| 256 |
$footnote_content = apply_filters( 'before_footnote', $footnote_content ); |
| 257 |
$footnote_content .= '<ol class="easy-footnotes-wrapper">' . $footnoteCopy . '</ol>'; |
| 258 |
|
| 259 |
// Add filter after footnote list. |
| 260 |
$footnote_content = apply_filters( 'after_footnote', $footnote_content ); |
| 261 |
|
| 262 |
$efn_output .= $footnote_content; |
| 263 |
|
| 264 |
// Add filters for the entire footnote list output. |
| 265 |
$efn_output = apply_filters( 'efn_footnote_list_output', $efn_output ); |
| 266 |
|
| 267 |
$content .= do_shortcode( $efn_output ); |
| 268 |
} |
| 269 |
} |
| 270 |
|
| 271 |
return $content; |
| 272 |
} |
| 273 |
|
| 274 |
/** |
| 275 |
* Reset the footnote count and footnote array each time the_content has been run. |
| 276 |
* |
| 277 |
* @param string $content The content of the post from the_content filter. |
| 278 |
*/ |
| 279 |
public function easy_footnote_reset( $content ) { |
| 280 |
$this->footnoteCount = 0; |
| 281 |
|
| 282 |
$this->footnotes = array(); |
| 283 |
|
| 284 |
return $content; |
| 285 |
} |
| 286 |
|
| 287 |
/** |
| 288 |
* Include the easy-footnotes-admin.php file. |
| 289 |
*/ |
| 290 |
public function easy_footnotes_admin() { |
| 291 |
include 'easy-footnotes-admin.php'; |
| 292 |
} |
| 293 |
|
| 294 |
/** |
| 295 |
* Function to add options page for Easy Footnote Settings. |
| 296 |
*/ |
| 297 |
public function easy_footnotes_admin_actions() { |
| 298 |
add_options_page( |
| 299 |
__( 'Easy Footnotes Settings', 'easy-footnotes' ), |
| 300 |
__( 'Easy Footnotes', 'easy-footnotes' ), |
| 301 |
'manage_options', |
| 302 |
'easy-footnotes-settings', |
| 303 |
array( $this, 'easy_footnotes_admin' ) |
| 304 |
); |
| 305 |
} |
| 306 |
|
| 307 |
/** |
| 308 |
* Function for enqueuring EAsy Footnotes admin scripts. |
| 309 |
*/ |
| 310 |
public function easy_footnotes_admin_scripts() { |
| 311 |
wp_enqueue_style( 'easy-footnotes-admin-styles', plugins_url( '/assets/easy-footnotes-admin.css', __FILE__ ), '', $this->version ); |
| 312 |
wp_enqueue_script( 'easy-footnotes-admin-scripts', plugins_url( '/assets/js/easy-footnotes-admin.js', __FILE__ ), array( 'jquery' ), $this->version, true ); |
| 313 |
} |
| 314 |
|
| 315 |
/** |
| 316 |
* Load plugin textdomain easy-footnotes |
| 317 |
*/ |
| 318 |
public function efn_load_textdomain() { |
| 319 |
load_plugin_textdomain( 'easy-footnotes', false, dirname( plugin_basename( __FILE__ ) ) . '/languages' ); |
| 320 |
} |
| 321 |
|
| 322 |
/** |
| 323 |
* Manually reset footnotes and counter |
| 324 |
*/ |
| 325 |
public function short_code_reset() { |
| 326 |
$this->footnoteCount = 0; |
| 327 |
$this->footnotes = array(); |
| 328 |
return ""; |
| 329 |
} |
| 330 |
} |
| 331 |
|
| 332 |
$easyFootnotes = new easyFootnotes(); |
| 333 |
|
