<?php /*
**************************************************************************
Plugin Name: Regenerate Thumbnails
Plugin URI: http://www.viper007bond.com/wordpress-plugins/regenerate-thumbnails/
Description: Allows you to regenerate all thumbnails after changing the thumbnail sizes.
Version: 2.2.4
Author: Viper007Bond
Author URI: http://www.viper007bond.com/
**************************************************************************
Copyright (C) 2008-2011 Viper007Bond
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
**************************************************************************/
class RegenerateThumbnails {
var $menu_id;
// Plugin initialization
function RegenerateThumbnails() {
// Load up the localization file if we're using WordPress in a different language
// Place it in this plugin's "localization" folder and name it "regenerate-thumbnails-[value in wp-config].mo"
load_plugin_textdomain( 'regenerate-thumbnails', false, '/regenerate-thumbnails/localization' );
add_action( 'admin_menu', array( &$this, 'add_admin_menu' ) );
add_action( 'admin_enqueue_scripts', array( &$this, 'admin_enqueues' ) );
add_action( 'wp_ajax_regeneratethumbnail', array( &$this, 'ajax_process_image' ) );
add_filter( 'media_row_actions', array( &$this, 'add_media_row_action' ), 10, 2 );
//add_filter( 'bulk_actions-upload', array( &$this, 'add_bulk_actions' ), 99 ); // A last minute change to 3.1 makes this no longer work
add_action( 'admin_head-upload.php', array( &$this, 'add_bulk_actions_via_javascript' ) );
add_action( 'admin_action_bulk_regenerate_thumbnails', array( &$this, 'bulk_action_handler' ) ); // Top drowndown
add_action( 'admin_action_-1', array( &$this, 'bulk_action_handler' ) ); // Bottom dropdown (assumes top dropdown = default value)
// Allow people to change what capability is required to use this plugin
$this->capability = apply_filters( 'regenerate_thumbs_cap', 'manage_options' );
}
// Register the management page
function add_admin_menu() {
$this->menu_id = add_management_page( __( 'Regenerate Thumbnails', 'regenerate-thumbnails' ), __( 'Regen. Thumbnails', 'regenerate-thumbnails' ), $this->capability, 'regenerate-thumbnails', array(&$this, 'regenerate_interface') );
}
// Enqueue the needed Javascript and CSS
function admin_enqueues( $hook_suffix ) {
if ( $hook_suffix != $this->menu_id )
return;
// WordPress 3.1 vs older version compatibility
if ( wp_script_is( 'jquery-ui-widget', 'registered' ) )
wp_enqueue_script( 'jquery-ui-progressbar', plugins_url( 'jquery-ui/jquery.ui.progressbar.min.js', __FILE__ ), array( 'jquery-ui-core', 'jquery-ui-widget' ), '1.8.6' );
else
wp_enqueue_script( 'jquery-ui-progressbar', plugins_url( 'jquery-ui/jquery.ui.progressbar.min.1.7.2.js', __FILE__ ), array( 'jquery-ui-core' ), '1.7.2' );
wp_enqueue_style( 'jquery-ui-regenthumbs', plugins_url( 'jquery-ui/redmond/jquery-ui-1.7.2.custom.css', __FILE__ ), array(), '1.7.2' );
}
// Add a "Regenerate Thumbnails" link to the media row actions
function add_media_row_action( $actions, $post ) {
if ( 'image/' != substr( $post->post_mime_type, 0, 6 ) || ! current_user_can( $this->capability ) )
return $actions;
$url = wp_nonce_url( admin_url( 'tools.php?page=regenerate-thumbnails&goback=1&ids=' . $post->ID ), 'regenerate-thumbnails' );
$actions['regenerate_thumbnails'] = '<a href="' . esc_url( $url ) . '" title="' . esc_attr( __( "Regenerate the thumbnails for this single image", 'regenerate-thumbnails' ) ) . '">' . __( 'Regenerate Thumbnails', 'regenerate-thumbnails' ) . '</a>';
return $actions;
}
// Add "Regenerate Thumbnails" to the Bulk Actions media dropdown
function add_bulk_actions( $actions ) {
$delete = false;
if ( ! empty( $actions['delete'] ) ) {
$delete = $actions['delete'];
unset( $actions['delete'] );
}
$actions['bulk_regenerate_thumbnails'] = __( 'Regenerate Thumbnails', 'regenerate-thumbnails' );
if ( $delete )
$actions['delete'] = $delete;
return $actions;
}
// Add new items to the Bulk Actions using Javascript
// A last minute change to the "bulk_actions-xxxxx" filter in 3.1 made it not possible to add items using that
function add_bulk_actions_via_javascript() {
if ( ! current_user_can( $this->capability ) )
return;
?>
<script type="text/javascript">
jQuery(document).ready(function($){
$('select[name^="action"] option:last-child').before('<option value="bulk_regenerate_thumbnails"><?php echo esc_attr( __( 'Regenerate Thumbnails', 'regenerate-thumbnails' ) ); ?></option>');
});
</script>
<?php
}
// Handles the bulk actions POST
function bulk_action_handler() {
if ( empty( $_REQUEST['action'] ) || ( 'bulk_regenerate_thumbnails' != $_REQUEST['action'] && 'bulk_regenerate_thumbnails' != $_REQUEST['action2'] ) )
return;
if ( empty( $_REQUEST['media'] ) || ! is_array( $_REQUEST['media'] ) )
return;
check_admin_referer( 'bulk-media' );
$ids = implode( ',', array_map( 'intval', $_REQUEST['media'] ) );
// Can't use wp_nonce_url() as it escapes HTML entities
wp_redirect( add_query_arg( '_wpnonce', wp_create_nonce( 'regenerate-thumbnails' ), admin_url( 'tools.php?page=regenerate-thumbnails&goback=1&ids=' . $ids ) ) );
exit();
}
// The user interface plus thumbnail regenerator
function regenerate_interface() {
global $wpdb;
?>
<div id="message" class="updated fade" style="display:none"></div>
<div class="wrap regenthumbs">
<h2>重新生成缩略图</h2>
<?php
// If the button was clicked
if ( ! empty( $_POST['regenerate-thumbnails'] ) || ! empty( $_REQUEST['ids'] ) ) {
// Capability check
if ( ! current_user_can( $this->capability ) )
wp_die( __( 'Cheatin’ uh?' ) );
// Form nonce check
check_admin_referer( 'regenerate-thumbnails' );
// Create the list of image IDs
if ( ! empty( $_REQUEST['ids'] ) ) {
$images = array_map( 'intval', explode( ',', trim( $_REQUEST['ids'], ',' ) ) );
$ids = implode( ',', $images );
} else {
// Directly querying the database is normally frowned upon, but all
// of the API functions will return the full post objects which will
// suck up lots of memory. This is best, just not as future proof.
if ( ! $images = $wpdb->get_results( "SELECT ID FROM $wpdb->posts WHERE post_type = 'attachment' AND post_mime_type LIKE 'image/%' ORDER BY ID DESC" ) ) {
echo ' <p>' . sprintf( __( "Unable to find any images. Are you sure <a href='%s'>some exist</a>?", 'regenerate-thumbnails' ), admin_url( 'upload.php?post_mime_type=image' ) ) . "</p></div>";
return;
}
// Generate the list of IDs
$ids = array();
foreach ( $images as $image )
$ids[] = $image->ID;
$ids = implode( ',', $ids );
}
echo '';
$count = count( $images );
$text_goback = ( ! empty( $_GET['goback'] ) ) ? sprintf( __( 'To go back to the previous page, <a href="%s">click here</a>.', 'regenerate-thumbnails' ), 'javascript:history.go(-1)' ) : '';
$text_failures = sprintf( __( 'All done! %1$s image(s) were successfully resized in %2$s seconds and there were %3$s failure(s). To try regenerating the failed images again, <a href="%4$s">click here</a>. %5$s', 'regenerate-thumbnails' ), "' + rt_successes + '", "' + rt_totaltime + '", "' + rt_errors + '", esc_url( wp_nonce_url( admin_url( 'tools.php?page=regenerate-thumbnails&goback=1' ), 'regenerate-thumbnails' ) . '&ids=' ) . "' + rt_failedlist + '", $text_goback );
$text_nofailures = sprintf( __( 'All done! %1$s image(s) were successfully resized in %2$s seconds and there were 0 failures. %3$s', 'regenerate-thumbnails' ), "' + rt_successes + '", "' + rt_totaltime + '", $text_goback );
?>
<noscript><p><em><?php _e( 'You must enable Javascript in order to proceed!', 'regenerate-thumbnails' ) ?></em></p></noscript>
<div id="regenthumbs-bar" style="position:relative;height:25px;">
<div id="regenthumbs-bar-percent" style="position:absolute;left:50%;top:50%;width:300px;margin-left:-150px;height:25px;margin-top:-9px;font-weight:bold;text-align:center;"></div>
</div>
<p><input type="button" class="button hide-if-no-js" name="regenthumbs-stop" id="regenthumbs-stop" value="终止" /></p>
<h3 class="title"><?php _e( 'Debugging Information', 'regenerate-thumbnails' ) ?></h3>
<p>
<?php printf( __( 'Total Images: %s', 'regenerate-thumbnails' ), $count ); ?><br />
<?php printf( __( 'Images Resized: %s', 'regenerate-thumbnails' ), '<span id="regenthumbs-debug-successcount">0</span>' ); ?><br />
<?php printf( __( 'Resize Failures: %s', 'regenerate-thumbnails' ), '<span id="regenthumbs-debug-failurecount">0</span>' ); ?>
</p>
<ol id="regenthumbs-debuglist">
<li style="display:none"></li>
</ol>
<script type="text/javascript">
// <![CDATA[
jQuery(document).ready(function($){
var i;
var rt_images = [<?php echo $ids; ?>];
var rt_total = rt_images.length;
var rt_count = 1;
var rt_percent = 0;
var rt_successes = 0;
var rt_errors = 0;
var rt_failedlist = '';
var rt_resulttext = '';
var rt_timestart = new Date().getTime();
var rt_timeend = 0;
var rt_totaltime = 0;
var rt_continue = true;
// Create the progress bar
$("#regenthumbs-bar").progressbar();
$("#regenthumbs-bar-percent").html( "0%" );
// Stop button
$("#regenthumbs-stop").click(function() {
rt_continue = false;
$('#regenthumbs-stop').val("<?php echo $this->esc_quotes( __( 'Stopping...', 'regenerate-thumbnails' ) ); ?>");
});
// Clear out the empty list element that's there for HTML validation purposes
$("#regenthumbs-debuglist li").remove();
// Called after each resize. Updates debug information and the progress bar.
function RegenThumbsUpdateStatus( id, success, response ) {
$("#regenthumbs-bar").progressbar( "value", ( rt_count / rt_total ) * 100 );
$("#regenthumbs-bar-percent").html( Math.round( ( rt_count / rt_total ) * 1000 ) / 10 + "%" );
rt_count = rt_count + 1;
if ( success ) {
rt_successes = rt_successes + 1;
$("#regenthumbs-debug-successcount").html(rt_successes);
$("#regenthumbs-debuglist").append("<li>" + response.success + "</li>");
}
else {
rt_errors = rt_errors + 1;
rt_failedlist = rt_failedlist + ',' + id;
$("#regenthumbs-debug-failurecount").html(rt_errors);
$("#regenthumbs-debuglist").append("<li>" + response.error + "</li>");
}
}
// Called when all images have been processed. Shows the results and cleans up.
function RegenThumbsFinishUp() {
rt_timeend = new Date().getTime();
rt_totaltime = Math.round( ( rt_timeend - rt_timestart ) / 1000 );
$('#regenthumbs-stop').hide();
if ( rt_errors > 0 ) {
rt_resulttext = '<?php echo $text_failures; ?>';
} else {
rt_resulttext = '<?php echo $text_nofailures; ?>';
}
$("#message").html("<p><strong>" + rt_resulttext + "</strong></p>");
$("#message").show();
}
// Regenerate a specified image via AJAX
function RegenThumbs( id ) {
$.ajax({
type: 'POST',
url: ajaxurl,
data: { action: "regeneratethumbnail", id: id },
success: function( response ) {
if ( response !== Object( response ) || ( typeof response.success === "undefined" && typeof response.error === "undefined" ) ) {
response = new Object;
response.success = false;
response.error = "<?php printf( esc_js( __( 'The resize request was abnormally terminated (ID %s). This is likely due to the image exceeding available memory or some other type of fatal error.', 'regenerate-thumbnails' ) ), '" + id + "' ); ?>";
}
if ( response.success ) {
RegenThumbsUpdateStatus( id, true, response );
}
else {
RegenThumbsUpdateStatus( id, false, response );
}
if ( rt_images.length && rt_continue ) {
RegenThumbs( rt_images.shift() );
}
else {
RegenThumbsFinishUp();
}
},
error: function( response ) {
RegenThumbsUpdateStatus( id, false, response );
if ( rt_images.length && rt_continue ) {
RegenThumbs( rt_images.shift() );
}
else {
RegenThumbsFinishUp();
}
}
});
}
RegenThumbs( rt_images.shift() );
});
// ]]>
</script>
<?php
}
// No button click? Display the form.
else {
?>
<form method="post" action="">
<?php wp_nonce_field('regenerate-thumbnails') ?>
<p>请先更新【媒体管理 -> 图片尺寸设置】中的缩略图大小，然后再重新生成所有图片。</p>
<p><input type="submit" class="button hide-if-no-js" name="regenerate-thumbnails" id="regenerate-thumbnails" value="更新所有缩略图" /></p>
<noscript><p><em>需要浏览器启动JAVA</em></p></noscript>
</form>
<?php
} // End if button
?>
</div>
<?php
}
// Process a single image ID (this is an AJAX handler)
function ajax_process_image() {
@error_reporting( 0 ); // Don't break the JSON result
header( 'Content-type: application/json' );
$id = (int) $_REQUEST['id'];
$image = get_post( $id );
if ( ! $image || 'attachment' != $image->post_type || 'image/' != substr( $image->post_mime_type, 0, 6 ) )
die( json_encode( array( 'error' => sprintf( __( 'Failed resize: %s is an invalid image ID.', 'regenerate-thumbnails' ), esc_html( $_REQUEST['id'] ) ) ) ) );
if ( ! current_user_can( $this->capability ) )
$this->die_json_error_msg( $image->ID, __( "Your user account doesn't have permission to resize images", 'regenerate-thumbnails' ) );
$fullsizepath = get_attached_file( $image->ID );
if ( false === $fullsizepath || ! file_exists( $fullsizepath ) )
$this->die_json_error_msg( $image->ID, sprintf( __( 'The originally uploaded image file cannot be found at %s', 'regenerate-thumbnails' ), '<code>' . esc_html( $fullsizepath ) . '</code>' ) );
@set_time_limit( 900 ); // 5 minutes per image should be PLENTY
$metadata = wp_generate_attachment_metadata( $image->ID, $fullsizepath );
if ( is_wp_error( $metadata ) )
$this->die_json_error_msg( $image->ID, $metadata->get_error_message() );
if ( empty( $metadata ) )
$this->die_json_error_msg( $image->ID, __( 'Unknown failure reason.', 'regenerate-thumbnails' ) );
// If this fails, then it just means that nothing was changed (old value == new value)
wp_update_attachment_metadata( $image->ID, $metadata );
die( json_encode( array( 'success' => sprintf( __( '"%1$s" (ID %2$s) was successfully resized in %3$s seconds.', 'regenerate-thumbnails' ), esc_html( get_the_title( $image->ID ) ), $image->ID, timer_stop() ) ) ) );
}
// Helper to make a JSON error message
function die_json_error_msg( $id, $message ) {
die( json_encode( array( 'error' => sprintf( __( '"%1$s" (ID %2$s) failed to resize. The error message was: %3$s', 'regenerate-thumbnails' ), esc_html( get_the_title( $id ) ), $id, $message ) ) ) );
}
// Helper function to escape quotes in strings for use in Javascript
function esc_quotes( $string ) {
return str_replace( '"', '\"', $string );
}
}
// Start up this plugin
add_action( 'init', 'RegenerateThumbnails' );
function RegenerateThumbnails() {
global $RegenerateThumbnails;
$RegenerateThumbnails = new RegenerateThumbnails();
}
?>