| 1 |
<?php |
| 2 |
/* |
| 3 |
Plugin Name: Image Source Control |
| 4 |
Version: 1.1 |
| 5 |
Plugin URI: none |
| 6 |
Description: The Image Source Control saves the source of an image, lists them and warns if it is missing. |
| 7 |
Author: Thomas Maier |
| 8 |
Author URI: http://www.webgilde.com |
| 9 |
License: GPL v3 |
| 10 |
|
| 11 |
Image Source Control Plugin for WordPress |
| 12 |
Copyright (C) 2012, Thomas Maier - thomas.maier@webgilde.com |
| 13 |
|
| 14 |
This program is free software: you can redistribute it and/or modify |
| 15 |
it under the terms of the GNU General Public License as published by |
| 16 |
the Free Software Foundation, either version 3 of the License, or |
| 17 |
(at your option) any later version. |
| 18 |
|
| 19 |
This program is distributed in the hope that it will be useful, |
| 20 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 22 |
GNU General Public License for more details. |
| 23 |
|
| 24 |
You should have received a copy of the GNU General Public License |
| 25 |
along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 26 |
* |
| 27 |
* Followed the following tutorials |
| 28 |
* http://wpengineer.com/2076/add-custom-field-attachment-in-wordpress/ |
| 29 |
* http://bueltge.de/eigene-felder-dateiverwaltung-wordpress/1226/ (same like above, but in German) |
| 30 |
* |
| 31 |
* |
| 32 |
*/ |
| 33 |
|
| 34 |
//avoid direct calls to this file |
| 35 |
if (!function_exists('add_action')) { |
| 36 |
header('Status: 403 Forbidden'); |
| 37 |
header('HTTP/1.1 403 Forbidden'); |
| 38 |
exit(); |
| 39 |
} |
| 40 |
|
| 41 |
define('ISCVERSION', '1.1.1'); |
| 42 |
define('ISCNAME', 'Image Source Control'); |
| 43 |
define('ISCTEXTDOMAIN', 'isc'); |
| 44 |
define('ISCDIR', basename(dirname(__FILE__))); |
| 45 |
define('ISCPATH', plugin_dir_path(__FILE__)); |
| 46 |
|
| 47 |
load_plugin_textdomain(ISCTEXTDOMAIN, false, dirname(plugin_basename(__FILE__)) . '/languages/'); |
| 48 |
|
| 49 |
if (!class_exists('ISC_CLASS')) { |
| 50 |
|
| 51 |
class ISC_CLASS { |
| 52 |
|
| 53 |
/** |
| 54 |
* define default meta fields |
| 55 |
*/ |
| 56 |
var $_fields = array( |
| 57 |
'image_source' => array( |
| 58 |
'id' => 'isc_image_source', |
| 59 |
'default' => '', |
| 60 |
), |
| 61 |
'image_source_own' => array( |
| 62 |
'id' => 'isc_image_source_own', |
| 63 |
'default' => '', |
| 64 |
) |
| 65 |
); |
| 66 |
|
| 67 |
/** |
| 68 |
* allowed image file types/extensions |
| 69 |
* @since 1.1 |
| 70 |
*/ |
| 71 |
var $_allowedExtensions = array( |
| 72 |
'jpg', 'png', 'gif' |
| 73 |
); |
| 74 |
|
| 75 |
public function __construct() { |
| 76 |
|
| 77 |
if (!current_user_can('upload_files')) |
| 78 |
return FALSE; |
| 79 |
|
| 80 |
add_filter('attachment_fields_to_edit', array(&$this, 'add_isc_fields'), 10, 2); |
| 81 |
add_filter('attachment_fields_to_save', array(&$this, 'isc_fields_save'), 10, 2); |
| 82 |
|
| 83 |
add_action('admin_menu', array($this, 'create_menu')); |
| 84 |
|
| 85 |
add_shortcode('isc_list', array($this, 'list_post_attachments_with_sources_shortcode')); |
| 86 |
|
| 87 |
add_action('admin_enqueue_scripts', array($this, 'add_admin_scripts')); |
| 88 |
|
| 89 |
// ajax function; 'add_meta_fields' is the action defined in isc.js as the action to be called via ajax |
| 90 |
add_action('wp_ajax_add_meta_fields', array($this, 'add_meta_values_to_attachments')); |
| 91 |
|
| 92 |
// save image information in meta field when a post is saved |
| 93 |
add_action('save_post', array($this, 'save_image_information_on_post_save')); |
| 94 |
} |
| 95 |
|
| 96 |
/** |
| 97 |
* create the menu pages for isc |
| 98 |
*/ |
| 99 |
public function create_menu() { |
| 100 |
|
| 101 |
// this page should be accessable by editors and higher |
| 102 |
$menuhook = add_submenu_page('upload.php', 'missing image sources by Image Source Control Plugin', __('Missing Sources', ISCTEXTDOMAIN), 'edit_others_posts', ISCPATH . '/templates/missing_sources.php', ''); |
| 103 |
} |
| 104 |
|
| 105 |
/** |
| 106 |
* add scripts to admin pages |
| 107 |
* @since 1.0 |
| 108 |
* @update 1.1.1 |
| 109 |
*/ |
| 110 |
public function add_admin_scripts($hook) { |
| 111 |
if ('image-source-control-isc/templates/missing_sources.php' != $hook) |
| 112 |
return; |
| 113 |
wp_enqueue_script('isc_script', plugins_url('/js/isc.js', __FILE__), false, ISCVERSION); |
| 114 |
// this is to define ajaxurl to be able to use this in its own js script |
| 115 |
// wp_localize_script( 'isc_script', 'IscAjax', array( 'ajaxurl' => admin_url( 'admin-ajax.php' ) ) ); |
| 116 |
} |
| 117 |
|
| 118 |
/** |
| 119 |
* add custom field to attachment |
| 120 |
* @param arr $form_fields |
| 121 |
* @param object $post |
| 122 |
* @return arr |
| 123 |
* @since 1.0 |
| 124 |
* @updated 1.1 |
| 125 |
*/ |
| 126 |
public function add_isc_fields($form_fields, $post) { |
| 127 |
// add input field for source |
| 128 |
$form_fields['isc_image_source']['label'] = __('Image Source', ISCTEXTDOMAIN); |
| 129 |
$form_fields['isc_image_source']['value'] = get_post_meta($post->ID, 'isc_image_source', true); |
| 130 |
$form_fields['isc_image_source']['helps'] = __('Include the image source here.', ISCTEXTDOMAIN); |
| 131 |
|
| 132 |
// add checkbox to mark as your own image |
| 133 |
$form_fields['isc_image_source_own']['input'] = 'html'; |
| 134 |
$form_fields['isc_image_source_own']['helps'] = __('Check this box if this is your own image and doesn\'t need a source.', ISCTEXTDOMAIN); |
| 135 |
$form_fields['isc_image_source_own']['html'] = "<input type='checkbox' value='1' name='attachments[{$post->ID}][isc_image_source_own]' id='attachments[{$post->ID}][isc_image_source_own]' " . checked(get_post_meta($post->ID, 'isc_image_source_own', true), 1, false ) . "/> " |
| 136 |
. __('This is my image', ISCTEXTDOMAIN); |
| 137 |
|
| 138 |
return $form_fields; |
| 139 |
} |
| 140 |
|
| 141 |
/** |
| 142 |
* save image source to post_meta |
| 143 |
* @param object $post |
| 144 |
* @param $attachment |
| 145 |
* @return object $post |
| 146 |
*/ |
| 147 |
public function isc_fields_save($post, $attachment) { |
| 148 |
|
| 149 |
if (isset($attachment['isc_image_source'])) |
| 150 |
update_post_meta($post['ID'], 'isc_image_source', $attachment['isc_image_source']); |
| 151 |
|
| 152 |
update_post_meta($post['ID'], 'isc_image_source_own', $attachment['isc_image_source_own']); |
| 153 |
return $post; |
| 154 |
} |
| 155 |
|
| 156 |
/** |
| 157 |
* create image sources list for all images of this post |
| 158 |
* @since 1.0 |
| 159 |
* @update 1.1 |
| 160 |
* @param int $post_id id of the current post/page |
| 161 |
* @return echo output |
| 162 |
*/ |
| 163 |
public function list_post_attachments_with_sources($post_id = 0) { |
| 164 |
|
| 165 |
if (empty($post_id)) { |
| 166 |
global $post; |
| 167 |
if (!empty($post->ID)) { |
| 168 |
$post_id = $post->ID; |
| 169 |
} |
| 170 |
} |
| 171 |
|
| 172 |
if (empty($post_id)) |
| 173 |
return; |
| 174 |
|
| 175 |
$attachments = get_post_meta($post_id, 'isc_post_images', true); |
| 176 |
// if attachments is an empty string, search for images in it |
| 177 |
if ( $attachments == '' ) { |
| 178 |
$this->save_image_information_on_load ($post_id, $_content); |
| 179 |
$attachments = get_post_meta($post_id, 'isc_post_images', true); |
| 180 |
} |
| 181 |
|
| 182 |
$return = ''; |
| 183 |
if (!empty($attachments)) : |
| 184 |
ob_start(); |
| 185 |
?> |
| 186 |
<p class="isc_image_list_title"><?php _e('image sources:', ISCTEXTDOMAIN); ?></p> |
| 187 |
<ul class="isc_image_list"><?php |
| 188 |
$atts = array(); |
| 189 |
foreach ($attachments as $attachment_id => $attachment_array) { |
| 190 |
|
| 191 |
$atts[ $attachment_id ]['title'] = get_the_title($attachment_id); |
| 192 |
$own = get_post_meta($attachment_id, 'isc_image_source_own', true); |
| 193 |
$source = get_post_meta($attachment_id, 'isc_image_source', true); |
| 194 |
|
| 195 |
if ( $own == '' AND $source == '' ) { |
| 196 |
// remove if no information set |
| 197 |
unset( $atts[ $attachment_id ] ); |
| 198 |
continue; |
| 199 |
} elseif ( $own != '' ) { |
| 200 |
$atts[ $attachment_id ]['source'] = __('by the author', ISCTEXTDOMAIN); |
| 201 |
} else { |
| 202 |
$atts[ $attachment_id ]['source'] = $source; |
| 203 |
} |
| 204 |
|
| 205 |
} |
| 206 |
|
| 207 |
foreach ($atts as $atts_id => $atts_array) : |
| 208 |
if ( empty( $atts_array['source'] ) ) continue; |
| 209 |
?><li><?php echo $atts_array['title'] . ': ' . $atts_array['source']; ?></li><?php |
| 210 |
endforeach; |
| 211 |
?></ul><?php |
| 212 |
$return = ob_get_clean(); |
| 213 |
|
| 214 |
endif; |
| 215 |
|
| 216 |
// don't display anything, if no image sources displayed |
| 217 |
if ( count( $atts ) === 0 ) return; |
| 218 |
|
| 219 |
return $return; |
| 220 |
} |
| 221 |
|
| 222 |
/** |
| 223 |
* shortcode function to list all image sources |
| 224 |
* @param arr $atts |
| 225 |
*/ |
| 226 |
public function list_post_attachments_with_sources_shortcode($atts = array()) { |
| 227 |
|
| 228 |
extract(shortcode_atts(array( |
| 229 |
'id' => 0, |
| 230 |
), $atts)); |
| 231 |
|
| 232 |
// if $id not set, use the current ID from the post |
| 233 |
if (empty($id)) { |
| 234 |
global $post; |
| 235 |
$id = $post->ID; |
| 236 |
} |
| 237 |
|
| 238 |
if (empty($id)) |
| 239 |
return; |
| 240 |
return $this->list_post_attachments_with_sources($id); |
| 241 |
} |
| 242 |
|
| 243 |
/** |
| 244 |
* get all attachments without sources |
| 245 |
* the downside of this function: is there is not even an empty metakey field, nothing is going to be retrieved |
| 246 |
* @todo fix this in WP 3.5 with compare => 'NOT EXISTS' |
| 247 |
*/ |
| 248 |
public function get_attachments_without_sources() { |
| 249 |
|
| 250 |
$args = array( |
| 251 |
'post_type' => 'attachment', |
| 252 |
'numberposts' => -1, |
| 253 |
'post_status' => null, |
| 254 |
'post_parent' => null, |
| 255 |
'meta_query' => array( |
| 256 |
// image source is empty |
| 257 |
array( |
| 258 |
'key' => 'isc_image_source', |
| 259 |
'value' => '', |
| 260 |
'compare' => '=', |
| 261 |
), |
| 262 |
// and image source is not set |
| 263 |
array( |
| 264 |
'key' => 'isc_image_source_own', |
| 265 |
'value' => '1', |
| 266 |
'compare' => '!=', |
| 267 |
), |
| 268 |
) |
| 269 |
); |
| 270 |
$attachments = get_posts($args); |
| 271 |
if (!empty($attachments)) { |
| 272 |
return $attachments; |
| 273 |
} |
| 274 |
} |
| 275 |
|
| 276 |
/** |
| 277 |
* add meta values to all attachments |
| 278 |
* @todo probably need to fix this when more fields are added along the way |
| 279 |
* @todo use compare => 'NOT EXISTS' when WP 3.5 is up to retrieve only values where it is not set |
| 280 |
* @todo this currently updates all empty fields; empty in this context is empty string, 0, false or not existing; add check if meta field already existed before |
| 281 |
*/ |
| 282 |
public function add_meta_values_to_attachments() { |
| 283 |
|
| 284 |
// retrieve all attachments |
| 285 |
$args = array( |
| 286 |
'post_type' => 'attachment', |
| 287 |
'numberposts' => -1, |
| 288 |
'post_status' => null, |
| 289 |
'post_parent' => null, |
| 290 |
); |
| 291 |
|
| 292 |
$attachments = get_posts($args); |
| 293 |
if (empty($attachments)) |
| 294 |
return; |
| 295 |
|
| 296 |
$count = 0; |
| 297 |
foreach ($attachments as $_attachment) { |
| 298 |
$set = 0; |
| 299 |
setup_postdata($_attachment); |
| 300 |
foreach ($this->_fields as $_field) { |
| 301 |
$meta = get_post_meta($_attachment->ID, $_field['id'], true); |
| 302 |
if (empty($meta)) { |
| 303 |
update_post_meta($_attachment->ID, $_field['id'], $_field['default']); |
| 304 |
$set = 1; |
| 305 |
} |
| 306 |
} |
| 307 |
if ($set) |
| 308 |
$count++; |
| 309 |
} |
| 310 |
echo sprintf(__('Added meta fields to %d images.', ISCTEXTDOMAIN), $count) . |
| 311 |
'<br/><input type="button" value="' . __('reload page', ISCTEXTDOMAIN ) . '" onClick="window.location.reload()">'; |
| 312 |
die(); |
| 313 |
} |
| 314 |
|
| 315 |
/** |
| 316 |
* show the loading image from wp-admin/images/loading.gif |
| 317 |
* @param bool $display should this be displayed directly or hidden? via inline css |
| 318 |
*/ |
| 319 |
public function show_loading_image($display = true) { |
| 320 |
|
| 321 |
$img_path = admin_url("/images/loading.gif"); |
| 322 |
$file_path = ABSPATH . "wp-admin/images/loading.gif"; |
| 323 |
if (file_exists($file_path)) { |
| 324 |
echo '<span id="isc_loading_img" style="display: none;"><img src="' . $img_path . '" width="16" height="16" alt="loading"/></span>'; |
| 325 |
} |
| 326 |
} |
| 327 |
|
| 328 |
/** |
| 329 |
* this is an entry function to save image information to a post when it is saved |
| 330 |
* @since 1.1 |
| 331 |
* @param type $post_id |
| 332 |
*/ |
| 333 |
public function save_image_information_on_post_save($post_id) { |
| 334 |
|
| 335 |
// return, if save_post is called more than one time |
| 336 |
if (did_action('save_post') !== 1) |
| 337 |
return; |
| 338 |
|
| 339 |
if ('attachment' == $_POST['post_type']) { |
| 340 |
return; |
| 341 |
} |
| 342 |
|
| 343 |
// check if this is a revision and if so, use parent post id |
| 344 |
if ($_id = wp_is_post_revision($post_id)) |
| 345 |
$post_id = $_id; |
| 346 |
|
| 347 |
$_content = stripslashes($_REQUEST['content']); |
| 348 |
$this->save_image_information($post_id, $_content); |
| 349 |
|
| 350 |
} |
| 351 |
|
| 352 |
/** |
| 353 |
* save image information for a post when it is viewed and the image source list is enabled |
| 354 |
* (this is in case the plugin is new and the current post wasn't saved before) |
| 355 |
* |
| 356 |
* @since 1.1 |
| 357 |
*/ |
| 358 |
|
| 359 |
public function save_image_information_on_load( ) { |
| 360 |
|
| 361 |
global $post; |
| 362 |
if (empty( $post->ID )) return; |
| 363 |
|
| 364 |
$post_id = $post->ID; |
| 365 |
$_content = $post->post_content; |
| 366 |
|
| 367 |
$this->save_image_information($post_id, $_content); |
| 368 |
|
| 369 |
} |
| 370 |
|
| 371 |
/** |
| 372 |
* retrieve images added to a post or page and save all information as a meta value |
| 373 |
* @since 1.1 |
| 374 |
* @todo check for more post types that maybe should not be parsed here |
| 375 |
*/ |
| 376 |
public function save_image_information( $post_id, $_content ) { |
| 377 |
|
| 378 |
$_image_urls = $this->_filter_src_attributes($_content); |
| 379 |
|
| 380 |
$_imgs = array(); |
| 381 |
|
| 382 |
foreach ($_image_urls as $_image_url) { |
| 383 |
// get ID of images by url |
| 384 |
$img_id = $this->get_image_by_url($_image_url); |
| 385 |
$_imgs[$img_id] = array( |
| 386 |
'src' => $_image_url |
| 387 |
); |
| 388 |
} |
| 389 |
|
| 390 |
// add thumbnail information |
| 391 |
$thumb_id = get_post_thumbnail_id($post_id); |
| 392 |
$_imgs[$thumb_id] = array( |
| 393 |
'src' => wp_get_attachment_url($thumb_id), |
| 394 |
'thumbnail' => true |
| 395 |
); |
| 396 |
|
| 397 |
if (empty($_imgs)) |
| 398 |
$_imgs = false; |
| 399 |
update_post_meta($post_id, 'isc_post_images', $_imgs); |
| 400 |
} |
| 401 |
|
| 402 |
/** |
| 403 |
* filter image src attribute from text |
| 404 |
* @since 1.1 |
| 405 |
* @return array with image src uris |
| 406 |
*/ |
| 407 |
public function _filter_src_attributes($content = '') { |
| 408 |
|
| 409 |
$srcs = array(); |
| 410 |
if (empty($content)) |
| 411 |
return $srcs; |
| 412 |
|
| 413 |
// parse HTML with DOM |
| 414 |
$dom = new DOMDocument; |
| 415 |
$dom->loadHTML($content); |
| 416 |
foreach ($dom->getElementsByTagName('img') as $node) { |
| 417 |
$srcs[] = $node->getAttribute('src'); |
| 418 |
} |
| 419 |
|
| 420 |
return $srcs; |
| 421 |
} |
| 422 |
|
| 423 |
/** |
| 424 |
* get image by url accessing the database directly |
| 425 |
* @since 1.1 |
| 426 |
* @param string $url url of the image |
| 427 |
* @return id of the image |
| 428 |
*/ |
| 429 |
public function get_image_by_url($url = '') { |
| 430 |
|
| 431 |
if (empty($url)) |
| 432 |
return 0; |
| 433 |
$types = implode('|', $this->_allowedExtensions); |
| 434 |
// check for the format 'image-title-300x200.jpg' and remove the image size from it |
| 435 |
$newurl = preg_replace("/-(\d+)x(\d+)\.({$types})$/i", '.${3}', $url); |
| 436 |
global $wpdb; |
| 437 |
$query = $wpdb->prepare("SELECT ID FROM {$wpdb->posts} WHERE guid = %s", $newurl); |
| 438 |
$id = $wpdb->get_var($query); |
| 439 |
return $id; |
| 440 |
} |
| 441 |
|
| 442 |
} |
| 443 |
|
| 444 |
function add_image_source_fields_start() { |
| 445 |
|
| 446 |
$isc = new ISC_CLASS(); |
| 447 |
} |
| 448 |
|
| 449 |
add_action('plugins_loaded', 'add_image_source_fields_start'); |
| 450 |
|
| 451 |
/** |
| 452 |
* the next functions are just to have an easier access from outside the class |
| 453 |
*/ |
| 454 |
function isc_list($post_id = 0) { |
| 455 |
|
| 456 |
$isc = new ISC_CLASS(); |
| 457 |
echo $isc->list_post_attachments_with_sources($post_id); |
| 458 |
|
| 459 |
} |
| 460 |
|
| 461 |
} |
| 462 |
|
| 463 |
|
