alpha

bath.php

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+<?php
+/**
+ * Plugin Name: Batch operations
+ * Description: My version Drupal Batch API for WordPress.
+ * Version: 0.1.0a
+ * Author: Igor V Belousov
+ * Author URI: http://belousovv.ru/
+ */
+
+// Create table on activate
+register_activation_hook(ABSPATH.PLUGINDIR.'/batch-operations/bath.php','batch_operations_install');
+
+// Add backend page without menu item
+add_action( 'admin_menu', 'batch_operations_add_page' );
+
+// Add JSON query for run operation
+add_action( 'wp_ajax_batch_operations', 'batch_operations_process' );
+
+global $batch_operations_version;
+$batch_operations_version = '0.1.0a';
+
+
+/**
+ * Create table on activate
+ */
+function batch_operations_install () {
+  global $wpdb;
+
+  $table_name = $wpdb->prefix . 'batch_operations';
+
+  $charset_collate = $wpdb->get_charset_collate();
+
+  $sql = "CREATE TABLE $table_name (
+	  `id` bigint(20) NOT NULL AUTO_INCREMENT,
+    `operations` longtext NOT NULL,
+    PRIMARY KEY (`id`)
+	) $charset_collate AUTO_INCREMENT=1;";
+
+  require_once( ABSPATH . 'wp-admin/includes/upgrade.php' );
+  dbDelta( $sql );
+
+}
+
+/**
+ * Add backend page without menu item
+ */
+function batch_operations_add_page() {
+  add_management_page( 'Batch operations', '', 'edit_posts', 'batch-operations', 'batch_operations_page_view' );
+}
+
+/**
+ * View batch operations page
+ */
+function batch_operations_page_view() {
+  //WP 3.3
+  wp_enqueue_script( 'jquery' );
+  wp_enqueue_script( 'batch_operations_script', plugin_dir_url('') . 'batch-operations/js/batch.min.js' );
+  wp_enqueue_style( 'batch_operations_script', plugin_dir_url('') . 'batch-operations/css/batch.css' );
+  $id = ( intval( $_REQUEST["id"] ) < 0 )? 0 : intval( $_REQUEST["id"] );
+  ?>
+  <script type="text/javascript">
+    var batch_id=<?php print $id; ?>,successful_page='<?php print get_admin_url(); ?>';
+  </script>
+  <div class="wrap">
+    <?php screen_icon(); ?>
+    <h2><?php echo get_admin_page_title() ?></h2>
+    <div class="batch-progress">
+      <span style="width:0%;"></span>
+    </div>
+    <div class="batch-message"></div>
+
+  </div>
+  <?php
+}
+
+function batch_operations_process () {
+  global $wpdb;
+  $id = ( intval( $_REQUEST["id"] ) < 0 )? 0 : intval( $_REQUEST["id"] );
+
+  if ( 1 > $id ){
+    wp_send_json( array( 'do' => 'finish' ) );
+  }
+
+  $carr = $wpdb->get_var( 'SELECT `operations` FROM `' . $wpdb->prefix . "batch_operations` WHERE `id` = $id;" );
+  if ( empty( $carr ) ) {
+    wp_send_json( array( 'do' => 'finish' ) );
+  }
+
+  $result['do'] = '';
+  $start = time() + 1;
+  $flag = true;
+  $carr = unserialize( $carr );
+
+  while ($flag) {
+    //make array of parameters for function
+    $arr = array();
+    if ( isset( $carr['operations'][0][1] ) ) {
+      $arr = $carr['operations'][0][1];
+    }
+    $arr[] = &$carr['context'];
+    //run function
+    call_user_func_array( $carr['operations'][0][0], $arr );
+
+    if ( true == $carr['context']['finished'] ) {
+      $carr['context']['sandbox'] = array();
+      array_splice( $carr['operations'], 0, 1 );
+      $carr['current']++;
+    }
+
+    if ( time() > $start || 0 == count($carr['operations']) ) {
+      $flag=false;
+    }
+  }
+
+  if ( 0 == count($carr['operations']) ) {
+    $result['do']='finish';
+  }
+
+  $result['percent'] = round( $carr['current'] / ($carr['count'] /100 ) );
+  $result['message'] = $carr['context']['message'];
+
+  if ( '' == $result['do'] ) {
+    $wpdb->update(
+      $wpdb->prefix . 'batch_operations',
+      array( 'operations' => serialize( $carr ) ),
+      array( 'id' => $id ),
+      array( '%s' ),
+      array( '%d' )
+    );
+  } else {
+    $wpdb->query( 'DELETE FROM `' . $wpdb->prefix . 'batch_operations' . "` WHERE `id`=$id ;" );
+  }
+
+  wp_send_json( $result );
+}
+
+
+/**
+ * Start batch operations
+ *
+ * <pre>
+ * $batch = array(
+ *   'title' => t('Exporting'),
+ *   'operations' => array(
+ *     array('my_function_1', array(123, 'qwe')),
+ *     array('my_function_2', array()),
+ *   ),
+ *   'finished' => 'my_finished_callback',
+ * );
+ *
+ * BatchController::Start($batch);
+ * </pre>
+ *
+ * <ul>
+ * <li> operations: (required) Array of operations to be performed, where each item is an array consisting of the name of an implementation of callback_batch_operation() and an array of parameter. Example:
+ * <li> title: A safe, translated string to use as the title for the progress page. Defaults to t('Processing').
+ * <li> init_message: Message displayed while the processing is initialized. Defaults to t('Initializing.').
+ * <li> progress_message: Message displayed while processing the batch. Available placeholders are %current% and %total%.
+ * <li> error_message: Message displayed if an error occurred while processing the batch. Defaults to t('An error has occurred.').
+ * <li> finished: Name of an implementation of callback_batch_finished(). This is executed after the batch has completed. This should be used to perform any result massaging that may be needed, and possibly save data in $_SESSION for display after final page redirection.
+ *
+ * Sample callback_batch_operation():
+ *
+ * <pre>
+ * function my_function_1($id, $text, &$context) {
+ *   $context['results'][] = $text . $id;
+ *   $context['message'] = 'Text + id ='.$text . $id;
+ * }
+ *
+ * The $context array gathers batch context information about the execution (read),
+ *  as well as 'return values' for the current operation (write)
+ *  The following keys are provided :
+ * 'results' (read / write): The array of results gathered so far by
+ *   the batch processing, for the current operation to append its own.
+ * 'message' (write): A text message displayed in the progress page.
+ * The following keys allow for multi-step operations :
+ * 'sandbox' (read / write): An array that can be freely used to
+ *   store persistent data between iterations. It is recommended to
+ *   use this instead of $_SESSION, which is unsafe if the user
+ *   continues browsing in a separate window while the batch is processing.
+ * 'finished' (write): A float number between 0 and 1 informing
+ *   the processing engine of the completion level for the operation.
+ *   1 (or no value explicitly set) means the operation is finished
+ *   and the batch processing can continue to the next operation.
+ * </pre>
+ *
+ * @param array $batch_arr array operations and more
+ */
+function batch_operations_start($batch_arr)
+{
+  global $wpdb;
+
+  $batch_arr['context'] = array(
+    'message'  => '',
+    'sandbox'  => array(),
+    'finished' => true,
+    'results'  => array()
+  );
+  $batch_arr['count']   = count( $batch_arr['operations'] );
+  $batch_arr['current'] = 0;
+
+  $wpdb->insert(
+    $wpdb->prefix . 'batch_operations',
+    array(
+      'operations' => serialize( $batch_arr )
+    ),
+    array(
+      '%s'
+    )
+  );
+
+  $location = get_admin_url(null, 'tools.php') . "?page=batch-operations&id=" . $wpdb->insert_id;
+
+  if ( ! headers_sent() ) {
+    wp_redirect( $location );
+  } else {
+    // if header is set then runs this hack
+    echo '<script type="text/javascript">';
+    echo 'document.location.href="' .  $location .'";';
+    echo '</script>';
+    echo '<noscript>';
+    echo '<meta http-equiv="refresh" content="0;url=' . $location . '" />';
+    echo '</noscript>';
+  }
+  exit(0);
+}

css/ShortCSS

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+Subproject commit c87f6175bc7af40bce6f62d0ae1855f5149fdaf6

css/batch.css

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+.batch-progress{height:30px;position:relative;background:#fff;-webkit-border-radius:8px;-moz-border-radius:8px;-o-border-radius:8px;-ms-border-radius:8px;-khtml-border-radius:8px;border-radius:8px;border:1px solid #ccc;margin:10px 0;padding:2px}.batch-progress>span{display:block;height:100%;background-color:#1834ff;background-image:-moz-linear-gradient(#4d80ff,#002ffb);background-image:-webkit-linear-gradient(#4d80ff,#002ffb);background-image:-o-linear-gradient(#4d80ff,#002ffb);background-image:-ms-linear-gradient(#4d80ff,#002ffb);background-image:linear-gradient(#4d80ff,#002ffb);-webkit-border-radius:6px;-moz-border-radius:6px;-o-border-radius:6px;-ms-border-radius:6px;-khtml-border-radius:6px;border-radius:6px;position:relative;overflow:hidden}

css/batch.styl

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+@import "ShortCSS/ShortCSS"
+
+.batch-progress
+  -h 30px
+  -pos relative
+  -bg #fff
+  b-radius 8px
+  -br 1px solid #ccc
+  -m 10px 0
+  -p 2px
+  & > span
+    -d block
+    -h 100%
+    -bgc #1834ff
+    l-gradient #4d80ff, #002ffb
+    b-radius 6px
+    -pos relative
+    overflow hidden
+

js/batch.js

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+jQuery(document).ready(function($) {
+  var batch_progress = function (percent){
+    return $(".batch-progress > span").animate({ width: percent + "%" }, 600);
+  };
+
+  function batch_process(){
+    $.post(
+      ajaxurl+'?action=batch_operations&id='+batch_id,
+      function(data){
+        if (data['do']=='finish')
+        {
+
+          batch_progress(data['percent']);
+          $('.batch-message').html(data['message']).delay(1500).queue(function () {
+              $(location).attr('href',successful_page);
+              $(this).dequeue();
+            }
+          );
+        }
+        else
+        {
+          $('.batch-message').html(data['message']);
+          batch_progress(data['percent']);
+          batch_process()
+        }
+      }
+    );
+  }
+
+  batch_process();
+
+});

js/batch.min.js

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+jQuery(document).ready(function(a){function b(){a.post(ajaxurl+"?action=batch_operations&id="+batch_id,function(d){"finish"==d["do"]?(c(d.percent),a(".batch-message").html(d.message).delay(1500).queue(function(){a(location).attr("href",successful_page),a(this).dequeue()})):(a(".batch-message").html(d.message),c(d.percent),b())})}var c=function(b){return a(".batch-progress > span").animate({width:b+"%"},600)};b()});

readme.txt

@@ -1,5 +1,5 @@
 === Batch operations ===
-Contributors: Igor V Belousov
+Contributors: igor-v-belousov
 Tags: batch
 Requires at least: 3.3
 Tested up to: 3.3