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<title>[26995] trunk: Autosave: refactor autosave.js, use heartbeat for transport and move all "Add/Edit Post" related functionality to post.js.</title>
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<div id="msg">
<dl class="meta">
<dt>Revision</dt> <dd><a href="http://core.trac.wordpress.org/changeset/26995">26995</a></dd>
<dt>Author</dt> <dd>azaozz</dd>
<dt>Date</dt> <dd>2014-01-22 04:55:37 +0000 (Wed, 22 Jan 2014)</dd>
</dl>

<h3>Log Message</h3>
<pre>Autosave: refactor autosave.js, use heartbeat for transport and move all "Add/Edit Post" related functionality to post.js. See <a href="http://core.trac.wordpress.org/ticket/25272">#25272</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpadminadminajaxphp">trunk/src/wp-admin/admin-ajax.php</a></li>
<li><a href="#trunksrcwpadmineditformadvancedphp">trunk/src/wp-admin/edit-form-advanced.php</a></li>
<li><a href="#trunksrcwpadminincludesajaxactionsphp">trunk/src/wp-admin/includes/ajax-actions.php</a></li>
<li><a href="#trunksrcwpadminincludesmiscphp">trunk/src/wp-admin/includes/misc.php</a></li>
<li><a href="#trunksrcwpadminincludespostphp">trunk/src/wp-admin/includes/post.php</a></li>
<li><a href="#trunksrcwpadminjspostjs">trunk/src/wp-admin/js/post.js</a></li>
<li><a href="#trunksrcwpadminpostphp">trunk/src/wp-admin/post.php</a></li>
<li><a href="#trunksrcwpincludesjsautosavejs">trunk/src/wp-includes/js/autosave.js</a></li>
<li><a href="#trunksrcwpincludesrevisionphp">trunk/src/wp-includes/revision.php</a></li>
<li><a href="#trunktestsphpunitincludestestcaseajaxphp">trunk/tests/phpunit/includes/testcase-ajax.php</a></li>
<li><a href="#trunktestsphpunittestsajaxAutosavephp">trunk/tests/phpunit/tests/ajax/Autosave.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpadminadminajaxphp"></a>
<div class="modfile"><h4>Modified: trunk/src/wp-admin/admin-ajax.php (26994 => 26995)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/src/wp-admin/admin-ajax.php        2014-01-22 02:28:13 UTC (rev 26994)
+++ trunk/src/wp-admin/admin-ajax.php   2014-01-22 04:55:37 UTC (rev 26995)
</span><span class="lines">@@ -50,7 +50,7 @@
</span><span class="cx">  'oembed-cache', 'image-editor', 'delete-comment', 'delete-tag', 'delete-link',
</span><span class="cx">  'delete-meta', 'delete-post', 'trash-post', 'untrash-post', 'delete-page', 'dim-comment',
</span><span class="cx">  'add-link-category', 'add-tag', 'get-tagcloud', 'get-comments', 'replyto-comment',
</span><del>-       'edit-comment', 'add-menu-item', 'add-meta', 'add-user', 'autosave', 'closed-postboxes',
</del><ins>+        'edit-comment', 'add-menu-item', 'add-meta', 'add-user', 'closed-postboxes',
</ins><span class="cx">   'hidden-columns', 'update-welcome-panel', 'menu-get-metabox', 'wp-link-ajax',
</span><span class="cx">  'menu-locations-save', 'menu-quick-search', 'meta-box-order', 'get-permalink',
</span><span class="cx">  'sample-permalink', 'inline-save', 'inline-save-tax', 'find_posts', 'widgets-order',
</span></span></pre></div>
<a id="trunksrcwpadmineditformadvancedphp"></a>
<div class="modfile"><h4>Modified: trunk/src/wp-admin/edit-form-advanced.php (26994 => 26995)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/src/wp-admin/edit-form-advanced.php        2014-01-22 02:28:13 UTC (rev 26994)
+++ trunk/src/wp-admin/edit-form-advanced.php   2014-01-22 04:55:37 UTC (rev 26995)
</span><span class="lines">@@ -402,7 +402,6 @@
</span><span class="cx"> 
</span><span class="cx"> echo $form_extra;
</span><span class="cx"> 
</span><del>-wp_nonce_field( 'autosave', 'autosavenonce', false );
</del><span class="cx"> wp_nonce_field( 'meta-box-order', 'meta-box-order-nonce', false );
</span><span class="cx"> wp_nonce_field( 'closedpostboxes', 'closedpostboxesnonce', false );
</span><span class="cx"> ?>
</span></span></pre></div>
<a id="trunksrcwpadminincludesajaxactionsphp"></a>
<div class="modfile"><h4>Modified: trunk/src/wp-admin/includes/ajax-actions.php (26994 => 26995)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/src/wp-admin/includes/ajax-actions.php     2014-01-22 02:28:13 UTC (rev 26994)
+++ trunk/src/wp-admin/includes/ajax-actions.php        2014-01-22 04:55:37 UTC (rev 26995)
</span><span class="lines">@@ -1089,68 +1089,6 @@
</span><span class="cx">  $x->send();
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-function wp_ajax_autosave() {
-       define( 'DOING_AUTOSAVE', true );
-
-       check_ajax_referer( 'autosave', 'autosavenonce' );
-
-       if ( ! empty( $_POST['catslist'] ) )
-               $_POST['post_category'] = explode( ',', $_POST['catslist'] );
-       if ( $_POST['post_type'] == 'page' || empty( $_POST['post_category'] ) )
-               unset( $_POST['post_category'] );
-
-       $data = '';
-       $supplemental = array();
-       $id = $revision_id = 0;
-
-       $post_id = (int) $_POST['post_id'];
-       $_POST['ID'] = $_POST['post_ID'] = $post_id;
-       $post = get_post( $post_id );
-       if ( empty( $post->ID ) || ! current_user_can( 'edit_post', $post->ID ) )
-               wp_die( __( 'You are not allowed to edit this post.' ) );
-
-       if ( 'page' == $post->post_type && ! current_user_can( 'edit_page', $post->ID ) )
-               wp_die( __( 'You are not allowed to edit this page.' ) );
-
-       if ( 'auto-draft' == $post->post_status )
-               $_POST['post_status'] = 'draft';
-
-       if ( ! empty( $_POST['autosave'] ) ) {
-               if ( ! wp_check_post_lock( $post->ID ) && get_current_user_id() == $post->post_author && ( 'auto-draft' == $post->post_status || 'draft' == $post->post_status ) ) {
-                       // Drafts and auto-drafts are just overwritten by autosave for the same user if the post is not locked
-                       $id = edit_post();
-               } else {
-                       // Non drafts or other users drafts are not overwritten. The autosave is stored in a special post revision for each user.
-                       $revision_id = wp_create_post_autosave( $post->ID );
-                       if ( is_wp_error($revision_id) )
-                               $id = $revision_id;
-                       else
-                               $id = $post->ID;
-               }
-
-               if ( ! is_wp_error($id) ) {
-                       /* translators: draft saved date format, see http://php.net/date */
-                       $draft_saved_date_format = __('g:i:s a');
-                       /* translators: %s: date and time */
-                       $data = sprintf( __('Draft saved at %s.'), date_i18n( $draft_saved_date_format ) );
-               }
-       } else {
-               if ( ! empty( $_POST['auto_draft'] ) )
-                       $id = 0; // This tells us it didn't actually save
-               else
-                       $id = $post->ID;
-       }
-
-       // @todo Consider exposing any errors, rather than having 'Saving draft...'
-       $x = new WP_Ajax_Response( array(
-               'what' => 'autosave',
-               'id' => $id,
-               'data' => $data,
-               'supplemental' => $supplemental
-       ) );
-       $x->send();
-}
-
</del><span class="cx"> function wp_ajax_closed_postboxes() {
</span><span class="cx">  check_ajax_referer( 'closedpostboxes', 'closedpostboxesnonce' );
</span><span class="cx">  $closed = isset( $_POST['closed'] ) ? explode( ',', $_POST['closed']) : array();
</span></span></pre></div>
<a id="trunksrcwpadminincludesmiscphp"></a>
<div class="modfile"><h4>Modified: trunk/src/wp-admin/includes/misc.php (26994 => 26995)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/src/wp-admin/includes/misc.php     2014-01-22 02:28:13 UTC (rev 26994)
+++ trunk/src/wp-admin/includes/misc.php        2014-01-22 04:55:37 UTC (rev 26995)
</span><span class="lines">@@ -734,7 +734,6 @@
</span><span class="cx">          if ( 2 === wp_verify_nonce( $received['post_nonce'], 'update-post_' . $post_id ) ) {
</span><span class="cx">                  $response['wp-refresh-post-nonces'] = array(
</span><span class="cx">                          'replace' => array(
</span><del>-                                       'autosavenonce' => wp_create_nonce('autosave'),
</del><span class="cx">                                   'getpermalinknonce' => wp_create_nonce('getpermalink'),
</span><span class="cx">                                  'samplepermalinknonce' => wp_create_nonce('samplepermalink'),
</span><span class="cx">                                  'closedpostboxesnonce' => wp_create_nonce('closedpostboxes'),
</span><span class="lines">@@ -768,3 +767,29 @@
</span><span class="cx">  return $settings;
</span><span class="cx"> }
</span><span class="cx"> add_filter( 'heartbeat_settings', 'wp_heartbeat_set_suspension' );
</span><ins>+
+/**
+ * Autosave with heartbeat
+ *
+ * @since 3.9
+ */
+function heartbeat_autosave( $response, $data ) {
+       if ( ! empty( $data['wp_autosave'] ) ) {
+               $saved = wp_autosave( $data['wp_autosave'] );
+
+               if ( is_wp_error( $saved ) ) {
+                       $response['wp_autosave'] = array( 'success' => false, 'message' => $saved->get_error_message() );
+               } elseif ( empty( $saved ) ) {
+                       $response['wp_autosave'] = array( 'success' => false, 'message' => __( 'Error while saving.' ) );
+               } else {
+                       /* translators: draft saved date format, see http://php.net/date */
+                       $draft_saved_date_format = __( 'g:i:s a' );
+                       /* translators: %s: date and time */
+                       $response['wp_autosave'] = array( 'success' => true, 'message' => sprintf( __( 'Draft saved at %s.' ), date_i18n( $draft_saved_date_format ) ) );
+               }
+       }
+
+       return $response;
+}
+// Run later as we have to set DOING_AUTOSAVE for back-compat
+add_filter( 'heartbeat_received', 'heartbeat_autosave', 500, 2 );
</ins></span></pre></div>
<a id="trunksrcwpadminincludespostphp"></a>
<div class="modfile"><h4>Modified: trunk/src/wp-admin/includes/post.php (26994 => 26995)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/src/wp-admin/includes/post.php     2014-01-22 02:28:13 UTC (rev 26994)
+++ trunk/src/wp-admin/includes/post.php        2014-01-22 04:55:37 UTC (rev 26995)
</span><span class="lines">@@ -79,9 +79,14 @@
</span><span class="cx">          }
</span><span class="cx">  }
</span><span class="cx"> 
</span><del>-       if ( ! empty( $post_data['post_status'] ) )
</del><ins>+        if ( ! empty( $post_data['post_status'] ) ) {
</ins><span class="cx">           $post_data['post_status'] = sanitize_key( $post_data['post_status'] );
</span><span class="cx"> 
</span><ins>+               // No longer an auto-draft
+               if ( 'auto-draft' == $post_data['post_status'] )
+                       $post_data['post_status'] = 'draft';
+       }
+
</ins><span class="cx">   // What to do based on which button they pressed
</span><span class="cx">  if ( isset($post_data['saveasdraft']) && '' != $post_data['saveasdraft'] )
</span><span class="cx">          $post_data['post_status'] = 'draft';
</span><span class="lines">@@ -190,9 +195,6 @@
</span><span class="cx">  $post_data = _wp_translate_postdata( true, $post_data );
</span><span class="cx">  if ( is_wp_error($post_data) )
</span><span class="cx">          wp_die( $post_data->get_error_message() );
</span><del>-       if ( ( empty( $post_data['action'] ) || 'autosave' != $post_data['action'] ) && 'auto-draft' == $post_data['post_status'] ) {
-               $post_data['post_status'] = 'draft';
-       }
</del><span class="cx"> 
</span><span class="cx">  if ( isset($post_data['visibility']) ) {
</span><span class="cx">          switch ( $post_data['visibility'] ) {
</span><span class="lines">@@ -1335,22 +1337,30 @@
</span><span class="cx">  * @uses _wp_translate_postdata()
</span><span class="cx">  * @uses _wp_post_revision_fields()
</span><span class="cx">  *
</span><del>- * @return unknown
</del><ins>+ * @param mixed $post_data Associative array containing the post data or int post ID.
+ * @return mixed The autosave revision ID. WP_Error or 0 on error.
</ins><span class="cx">  */
</span><del>-function wp_create_post_autosave( $post_id ) {
-       $translated = _wp_translate_postdata( true );
-       if ( is_wp_error( $translated ) )
-               return $translated;
</del><ins>+function wp_create_post_autosave( $post_data ) {
+       if ( is_numeric( $post_data ) ) {
+               $post_id = $post_data;
+               $post_data = &$_POST;
+       } else {
+               $post_id = (int) $post_data['post_ID'];
+       }
</ins><span class="cx"> 
</span><ins>+       $post_data = _wp_translate_postdata( true, $post_data );
+       if ( is_wp_error( $post_data ) )
+               return $post_data;
+
</ins><span class="cx">   $post_author = get_current_user_id();
</span><span class="cx"> 
</span><span class="cx">  // Store one autosave per author. If there is already an autosave, overwrite it.
</span><span class="cx">  if ( $old_autosave = wp_get_post_autosave( $post_id, $post_author ) ) {
</span><del>-               $new_autosave = _wp_post_revision_fields( $_POST, true );
</del><ins>+                $new_autosave = _wp_post_revision_fields( $post_data, true );
</ins><span class="cx">           $new_autosave['ID'] = $old_autosave->ID;
</span><span class="cx">          $new_autosave['post_author'] = $post_author;
</span><span class="cx"> 
</span><del>-               // If the new autosave is the same content as the post, delete the old autosave.
</del><ins>+                // If the new autosave has the same content as the post, delete the autosave.
</ins><span class="cx">           $post = get_post( $post_id );
</span><span class="cx">          $autosave_is_different = false;
</span><span class="cx">          foreach ( array_keys( _wp_post_revision_fields() ) as $field ) {
</span><span class="lines">@@ -1362,14 +1372,14 @@
</span><span class="cx"> 
</span><span class="cx">          if ( ! $autosave_is_different ) {
</span><span class="cx">                  wp_delete_post_revision( $old_autosave->ID );
</span><del>-                       return;
</del><ins>+                        return 0;
</ins><span class="cx">           }
</span><span class="cx"> 
</span><span class="cx">          return wp_update_post( $new_autosave );
</span><span class="cx">  }
</span><span class="cx"> 
</span><span class="cx">  // _wp_put_post_revision() expects unescaped.
</span><del>-       $post_data = wp_unslash( $_POST );
</del><ins>+        $post_data = wp_unslash( $post_data );
</ins><span class="cx"> 
</span><span class="cx">  // Otherwise create the new autosave as a special post revision
</span><span class="cx">  return _wp_put_post_revision( $post_data, true );
</span><span class="lines">@@ -1395,58 +1405,82 @@
</span><span class="cx"> function post_preview() {
</span><span class="cx"> 
</span><span class="cx">  $post_ID = (int) $_POST['post_ID'];
</span><del>-       $status = get_post_status( $post_ID );
-       if ( 'auto-draft' == $status )
-               wp_die( __('Preview not available. Please save as a draft first.') );
</del><ins>+        $_POST['ID'] = $post_ID;
</ins><span class="cx"> 
</span><del>-       if ( isset($_POST['catslist']) )
-               $_POST['post_category'] = explode(",", $_POST['catslist']);
</del><ins>+        if ( ! $post = get_post( $post_ID ) )
+               wp_die( __('You attempted to preview a non existing item.') );
</ins><span class="cx"> 
</span><del>-       if ( isset($_POST['tags_input']) )
-               $_POST['tags_input'] = explode(",", $_POST['tags_input']);
</del><ins>+        if ( ! current_user_can( 'edit_post', $post->ID ) )
+               wp_die( __('You are not allowed to preview this item.') );
</ins><span class="cx"> 
</span><del>-       if ( $_POST['post_type'] == 'page' || empty($_POST['post_category']) )
-               unset($_POST['post_category']);
</del><ins>+        $is_autosave = false;
</ins><span class="cx"> 
</span><del>-       $_POST['ID'] = $post_ID;
-       $post = get_post($post_ID);
-
-       if ( 'page' == $post->post_type ) {
-               if ( ! current_user_can('edit_page', $post_ID) )
-                       wp_die( __('You are not allowed to edit this page.') );
</del><ins>+        if ( ! wp_check_post_lock( $post->ID ) && get_current_user_id() == $post->post_author && ( 'draft' == $post->post_status || 'auto-draft' == $post->post_status ) ) {
+               $saved_post_id = edit_post();
</ins><span class="cx">   } else {
</span><del>-               if ( ! current_user_can('edit_post', $post_ID) )
-                       wp_die( __('You are not allowed to edit this post.') );
-       }
</del><ins>+                $is_autosave = true;
</ins><span class="cx"> 
</span><del>-       $user_id = get_current_user_id();
-       $locked = wp_check_post_lock( $post->ID );
-       if ( ! $locked && 'draft' == $post->post_status && $user_id == $post->post_author ) {
-               $id = edit_post();
-       } else { // Non drafts are not overwritten. The autosave is stored in a special post revision.
-               $id = wp_create_post_autosave( $post->ID );
-               if ( ! is_wp_error($id) )
-                       $id = $post->ID;
</del><ins>+                if ( 'auto-draft' == $_POST['post_status'] )
+                       $_POST['post_status'] = 'draft';
+
+               $saved_post_id = wp_create_post_autosave( $post->ID );
</ins><span class="cx">   }
</span><span class="cx"> 
</span><del>-       if ( is_wp_error($id) )
-               wp_die( $id->get_error_message() );
</del><ins>+        if ( is_wp_error( $saved_post_id ) )
+               wp_die( $saved_post_id->get_error_message() );
</ins><span class="cx"> 
</span><del>-       if ( ! $locked && $_POST['post_status'] == 'draft' && $user_id == $post->post_author ) {
-               $url = add_query_arg( 'preview', 'true', get_permalink($id) );
-       } else {
-               $nonce = wp_create_nonce('post_preview_' . $id);
-               $args = array(
-                       'preview' => 'true',
-                       'preview_id' => $id,
-                       'preview_nonce' => $nonce,
-               );
</del><ins>+        $query_args = array( 'preview' => 'true' );
</ins><span class="cx"> 
</span><ins>+       if ( $is_autosave && $saved_post_id ) {
+               $query_args['preview_id'] = $post->ID;
+               $query_args['preview_nonce'] = wp_create_nonce( 'post_preview_' . $post->ID );
+
</ins><span class="cx">           if ( isset( $_POST['post_format'] ) )
</span><del>-                       $args['post_format'] = empty( $_POST['post_format'] ) ? 'standard' : sanitize_key( $_POST['post_format'] );
-
-               $url = add_query_arg( $args, get_permalink($id) );
</del><ins>+                        $query_args['post_format'] = empty( $_POST['post_format'] ) ? 'standard' : sanitize_key( $_POST['post_format'] );
</ins><span class="cx">   }
</span><span class="cx"> 
</span><ins>+       $url = add_query_arg( $query_args, get_permalink( $post->ID ) );
</ins><span class="cx">   return apply_filters( 'preview_post_link', $url );
</span><span class="cx"> }
</span><ins>+
+/**
+ * Save a post submitted with XHR
+ *
+ * Intended for use with heartbeat and autosave.js
+ *
+ * @since 3.9
+ *
+ * @param $post_data Associative array of the submitted post data.
+ * @return mixed The value 0 or WP_Error on failure. The saved post ID on success.
+ *               Te ID can be the draft post_id or the autosave revision post_id.
+ */
+function wp_autosave( $post_data ) {
+       // Back-compat
+       if ( ! defined( 'DOING_AUTOSAVE' ) )
+               define( 'DOING_AUTOSAVE', true );
+
+       $post_id = (int) $post_data['post_id'];
+       $post_data['ID'] = $post_data['post_ID'] = $post_id;
+
+       if ( false === wp_verify_nonce( $post_data['_wpnonce'], 'update-post_' . $post_id ) )
+               return new WP_Error( 'invalid_nonce', __('ERROR: invalid post data.') );
+
+       $post = get_post( $post_id );
+
+       if ( ! current_user_can( 'edit_post', $post->ID ) )
+               return new WP_Error( 'edit_post', __('You are not allowed to edit this item.') );
+
+       if ( 'auto-draft' == $post->post_status )
+               $post_data['post_status'] = 'draft';
+
+       if ( $post_data['post_type'] != 'page' && ! empty( $post_data['catslist'] ) )
+               $post_data['post_category'] = explode( ',', $post_data['catslist'] );
+
+       if ( ! wp_check_post_lock( $post->ID ) && get_current_user_id() == $post->post_author && ( 'auto-draft' == $post->post_status || 'draft' == $post->post_status ) ) {
+               // Drafts and auto-drafts are just overwritten by autosave for the same user if the post is not locked
+               return edit_post( $post_data );
+       } else {
+               // Non drafts or other users drafts are not overwritten. The autosave is stored in a special post revision for each user.
+               return wp_create_post_autosave( $post_data );
+       }
+}
</ins></span></pre></div>
<a id="trunksrcwpadminjspostjs"></a>
<div class="modfile"><h4>Modified: trunk/src/wp-admin/js/post.js (26994 => 26995)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/src/wp-admin/js/post.js    2014-01-22 02:28:13 UTC (rev 26994)
+++ trunk/src/wp-admin/js/post.js       2014-01-22 04:55:37 UTC (rev 26995)
</span><span class="lines">@@ -1,7 +1,9 @@
</span><span class="cx"> /* global postL10n, ajaxurl, wpAjax, setPostThumbnailL10n, postboxes, pagenow, tinymce, alert, deleteUserSetting, getUserSetting, setUserSetting */
</span><span class="cx"> /* global theList:true, theExtraList:true, autosave:true */
</span><span class="cx"> 
</span><del>-var tagBox, commentsBox, editPermalink, makeSlugeditClickable, WPSetThumbnailHTML, WPSetThumbnailID, WPRemoveThumbnail, wptitlehint;
</del><ins>+var tagBox, commentsBox, WPSetThumbnailHTML, WPSetThumbnailID, WPRemoveThumbnail, wptitlehint;
+// Back-compat: prevent fatal errors
+makeSlugeditClickable = editPermalink = function(){};
</ins><span class="cx"> 
</span><span class="cx"> // return an array with any duplicate, whitespace or values removed
</span><span class="cx"> function array_unique_noempty(a) {
</span><span class="lines">@@ -268,10 +270,9 @@
</span><span class="cx">          send.lock = lock;
</span><span class="cx"> 
</span><span class="cx">  data['wp-refresh-post-lock'] = send;
</span><del>-});
</del><span class="cx"> 
</span><del>-// Post locks: update the lock string or show the dialog if somebody has taken over editing
-$(document).on( 'heartbeat-tick.refresh-lock', function( e, data ) {
</del><ins>+}).on( 'heartbeat-tick.refresh-lock', function( e, data ) {
+       // Post locks: update the lock string or show the dialog if somebody has taken over editing
</ins><span class="cx">   var received, wrap, avatar;
</span><span class="cx"> 
</span><span class="cx">  if ( data['wp-refresh-post-lock'] ) {
</span><span class="lines">@@ -282,19 +283,16 @@
</span><span class="cx">                  wrap = $('#post-lock-dialog');
</span><span class="cx"> 
</span><span class="cx">                  if ( wrap.length && ! wrap.is(':visible') ) {
</span><del>-                               if ( typeof autosave == 'function' ) {
-                                       $(document).on('autosave-disable-buttons.post-lock', function() {
-                                               wrap.addClass('saving');
-                                       }).on('autosave-enable-buttons.post-lock', function() {
</del><ins>+                                if ( typeof wp != 'undefined' && wp.autosave ) {
+                                       // Save the latest changes and disable
+                                       $(document).one( 'heartbeat-tick', function() {
+                                               wp.autosave.server.disable();
</ins><span class="cx">                                           wrap.removeClass('saving').addClass('saved');
</span><del>-                                               window.onbeforeunload = null;
</del><ins>+                                                $(window).off( 'beforeunload.edit-post' );
</ins><span class="cx">                                   });
</span><span class="cx"> 
</span><del>-                                       // Save the latest changes and disable
-                                       if ( ! autosave() )
-                                               window.onbeforeunload = null;
-
-                                       autosave = function(){};
</del><ins>+                                        wrap.addClass('saving');
+                                       wp.autosave.server.triggerSave();
</ins><span class="cx">                           }
</span><span class="cx"> 
</span><span class="cx">                          if ( received.lock_error.avatar_src ) {
</span><span class="lines">@@ -309,6 +307,22 @@
</span><span class="cx">                  $('#active_post_lock').val( received.new_lock );
</span><span class="cx">          }
</span><span class="cx">  }
</span><ins>+}).on( 'after-autosave.update-post-slug', function() {
+       // create slug area only if not already there
+       if ( ! $('#edit-slug-box > *').length ) {
+               $.post( ajaxurl, {
+                               action: 'sample-permalink',
+                               post_id: $('#post_ID').val(),
+                               new_title: typeof fullscreen != 'undefined' && fullscreen.settings.visible ? $('#wp-fullscreen-title').val() : $('#title').val(),
+                               samplepermalinknonce: $('#samplepermalinknonce').val()
+                       },
+                       function( data ) {
+                               if ( data != '-1' ) {
+                                       $('#edit-slug-box').html(data);
+                               }
+                       }
+               );
+       }
</ins><span class="cx"> });
</span><span class="cx"> 
</span><span class="cx"> }(jQuery));
</span><span class="lines">@@ -354,8 +368,14 @@
</span><span class="cx"> }(jQuery));
</span><span class="cx"> 
</span><span class="cx"> jQuery(document).ready( function($) {
</span><del>-       var stamp, visibility, updateVisibility, updateText,
-               sticky = '', last = 0, co = $('#content');
</del><ins>+        var stamp, visibility, $submitButtons,
+               sticky = '',
+               last = 0,
+               co = $('#content'),
+               $editSlugWrap = $('#edit-slug-box'),
+               postId = $('#post_ID').val() || 0,
+               $submitpost = $('#submitpost'),
+               releaseLock = true;
</ins><span class="cx"> 
</span><span class="cx">  postboxes.add_postbox_toggles(pagenow);
</span><span class="cx"> 
</span><span class="lines">@@ -380,6 +400,142 @@
</span><span class="cx">          wp.heartbeat.interval( 15 );
</span><span class="cx">  }
</span><span class="cx"> 
</span><ins>+       // The form is being submitted by the user
+       $submitButtons = $submitpost.find( ':button, :submit, a.submitdelete, #post-preview' ).on( 'click.autosave', function( event ) {
+               var $button = $(this);
+
+               if ( $button.prop('disabled') ) {
+                       event.preventDefault();
+                       return;
+               }
+
+               if ( $button.hasClass('submitdelete') ) {
+                       return;
+               }
+
+               // The form submission can be blocked from JS or by using HTML 5.0 validation on some fields.
+               // Run this only on an actual 'submit'.
+               $('form#post').off( 'submit.edit-post' ).on( 'submit.edit-post', function( event ) {
+                       if ( event.isDefaultPrevented() ) {
+                               return;
+                       }
+
+                       wp.autosave.server.disable();
+                       releaseLock = false;
+                       $(window).off( 'beforeunload.edit-post' );
+
+                       $submitButtons.prop( 'disabled', true ).addClass( 'button-disabled' );
+
+                       if ( $button.attr('id') === 'publish' ) {
+                               $submitpost.find('#major-publishing-actions .spinner').show();
+                       } else {
+                               $submitpost.find('#minor-publishing .spinner').show();
+                       }
+               });
+       });
+
+       // Submit the form saving a draft or an autosave, and show a preview in a new tab
+       $('#post-preview').on( 'click.post-preview', function( event ) {
+               var $this = $(this),
+                       $form = $('form#post'),
+                       $previewField = $('input#wp-preview'),
+                       target = $this.attr('target') || 'wp-preview',
+                       ua = navigator.userAgent.toLowerCase();
+               
+               event.preventDefault();
+
+               if ( $this.prop('disabled') ) {
+                       return;
+               }
+
+               if ( typeof wp != 'undefined' && wp.autosave ) {
+                       wp.autosave.server.tempBlockSave();
+               }
+
+               $previewField.val('dopreview');
+               $form.attr( 'target', target ).submit().attr( 'target', '' );
+
+               // Workaround for WebKit bug preventing a form submitting twice to the same action.
+               // https://bugs.webkit.org/show_bug.cgi?id=28633
+               if ( ua.indexOf('safari') !== -1 && ua.indexOf('chrome') === -1 ) {
+                       $form.attr( 'action', function( index, value ) {
+                               return value + '?t=' + ( new Date() ).getTime();
+                       });
+               }
+
+               $previewField.val('');
+       });
+
+       // This code is meant to allow tabbing from Title to Post content.
+       $('#title').on( 'keydown.editor-focus', function( event ) {
+               var editor;
+
+               if ( event.keyCode === 9 && ! event.ctrlKey && ! event.altKey && ! event.shiftKey ) {
+                       editor = typeof tinymce != 'undefined' && tinymce.get('content');
+
+                       if ( editor && ! editor.isHidden() ) {
+                               editor.focus();
+                       } else {
+                               $('#content').focus();
+                       }
+
+                       event.preventDefault();
+               }
+       });
+
+       // Autosave new posts after a title is typed
+       if ( $( '#auto_draft' ).val() ) {
+               $( '#title' ).blur( function() {
+                       if ( ! this.value || $( '#auto_draft' ).val() !== '1' ) {
+                               return;
+                       }
+
+                       if ( typeof wp != 'undefined' && wp.autosave ) {
+                               wp.autosave.server.triggerSave();
+                       }
+               });
+       }
+
+       $(document).on( 'autosave-disable-buttons.edit-post', function() {
+               $submitButtons.prop( 'disabled', true ).addClass( 'button-disabled' );
+       }).on( 'autosave-enable-buttons.edit-post', function() {
+               if ( ! window.wp || ! window.wp.heartbeat || ! window.wp.heartbeat.hasConnectionError() ) {
+                       $submitButtons.prop( 'disabled', false ).removeClass( 'button-disabled' );
+               }
+       });
+
+       $(window).on( 'beforeunload.edit-post', function() {
+               var editor = typeof tinymce !== 'undefined' && tinymce.get('content');
+
+               if ( ( editor && ! editor.isHidden() && editor.isDirty() ) || 
+                       ( typeof wp !== 'undefined' && wp.autosave && wp.autosave.server.postChanged() ) ) {
+
+                       return autosaveL10n.saveAlert;
+               }
+       }).on( 'unload.edit-post', function( event ) {
+               if ( ! releaseLock ) {
+                       return;
+               }
+
+               // Unload is triggered (by hand) on removing the Thickbox iframe.
+               // Make sure we process only the main document unload.
+               if ( event.target && event.target.nodeName != '#document' ) {
+                       return;
+               }
+
+               $.ajax({
+                       type: 'POST',
+                       url: ajaxurl,
+                       async: false,
+                       data: {
+                               action: 'wp-remove-post-lock',
+                               _wpnonce: $('#_wpnonce').val(),
+                               post_ID: $('#post_ID').val(),
+                               active_post_lock: $('#active_post_lock').val()
+                       }
+               });
+       });
+
</ins><span class="cx">   // multi-taxonomies
</span><span class="cx">  if ( $('#tagsdiv-post_tag').length ) {
</span><span class="cx">          tagBox.init();
</span><span class="lines">@@ -689,28 +845,22 @@
</span><span class="cx">  } // end submitdiv
</span><span class="cx"> 
</span><span class="cx">  // permalink
</span><del>-       if ( $('#edit-slug-box').length ) {
-               editPermalink = function(post_id) {
-                       var slug_value, i,
-                               c = 0,
-                               e = $( '#editable-post-name' ),
-                               revert_e = e.html(),
-                               real_slug = $( '#post_name' ),
-                               revert_slug = real_slug.val(),
-                               b = $( '#edit-slug-buttons' ),
-                               revert_b = b.html(),
-                               full = $( '#editable-post-name-full' ).html();
</del><ins>+        if ( $editSlugWrap.length ) {
+               function editPermalink() {
+                       var i, c = 0, e = $('#editable-post-name'), revert_e = e.html(), real_slug = $('#post_name'),
+                               revert_slug = real_slug.val(), b = $('#edit-slug-buttons'), revert_b = b.html(),
+                               full = $('#editable-post-name-full').html();
</ins><span class="cx"> 
</span><span class="cx">                  $('#view-post-btn').hide();
</span><span class="cx">                  b.html('<a href="#" class="save button button-small">'+postL10n.ok+'</a> <a class="cancel" href="#">'+postL10n.cancel+'</a>');
</span><span class="cx">                  b.children('.save').click(function() {
</span><span class="cx">                          var new_slug = e.children('input').val();
</span><span class="cx">                          if ( new_slug == $('#editable-post-name-full').text() ) {
</span><del>-                                       return $('.cancel', '#edit-slug-buttons').click();
</del><ins>+                                        return $('#edit-slug-buttons .cancel').click();
</ins><span class="cx">                           }
</span><span class="cx">                          $.post(ajaxurl, {
</span><span class="cx">                                  action: 'sample-permalink',
</span><del>-                                       post_id: post_id,
</del><ins>+                                        post_id: postId,
</ins><span class="cx">                                   new_slug: new_slug,
</span><span class="cx">                                  new_title: $('#title').val(),
</span><span class="cx">                                  samplepermalinknonce: $('#samplepermalinknonce').val()
</span><span class="lines">@@ -724,13 +874,12 @@
</span><span class="cx">                                  }
</span><span class="cx">                                  b.html(revert_b);
</span><span class="cx">                                  real_slug.val(new_slug);
</span><del>-                                       makeSlugeditClickable();
</del><span class="cx">                                   $('#view-post-btn').show();
</span><span class="cx">                          });
</span><span class="cx">                          return false;
</span><span class="cx">                  });
</span><span class="cx"> 
</span><del>-                       $('.cancel', '#edit-slug-buttons').click(function() {
</del><ins>+                        $('#edit-slug-buttons .cancel').click(function() {
</ins><span class="cx">                           $('#view-post-btn').show();
</span><span class="cx">                          e.html(revert_e);
</span><span class="cx">                          b.html(revert_b);
</span><span class="lines">@@ -760,12 +909,13 @@
</span><span class="cx">                  }).focus();
</span><span class="cx">          };
</span><span class="cx"> 
</span><del>-               makeSlugeditClickable = function() {
-                       $('#editable-post-name').click(function() {
-                               $('#edit-slug-buttons').children('.edit-slug').click();
-                       });
-               };
-               makeSlugeditClickable();
</del><ins>+                $editSlugWrap.on( 'click', function( event ) {
+                       var $target = $( event.target );
+
+                       if ( $target.is('#editable-post-name') || $target.hasClass('edit-slug') ) {
+                               editPermalink();
+                       }
+               });
</ins><span class="cx">   }
</span><span class="cx"> 
</span><span class="cx">  // word count
</span></span></pre></div>
<a id="trunksrcwpadminpostphp"></a>
<div class="modfile"><h4>Modified: trunk/src/wp-admin/post.php (26994 => 26995)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/src/wp-admin/post.php      2014-01-22 02:28:13 UTC (rev 26994)
+++ trunk/src/wp-admin/post.php 2014-01-22 04:55:37 UTC (rev 26995)
</span><span class="lines">@@ -307,7 +307,7 @@
</span><span class="cx">  break;
</span><span class="cx"> 
</span><span class="cx"> case 'preview':
</span><del>-       check_admin_referer( 'autosave', 'autosavenonce' );
</del><ins>+        check_admin_referer( 'update-post_' . $post_id );
</ins><span class="cx"> 
</span><span class="cx">  $url = post_preview();
</span><span class="cx"> 
</span></span></pre></div>
<a id="trunksrcwpincludesjsautosavejs"></a>
<div class="modfile"><h4>Modified: trunk/src/wp-includes/js/autosave.js (26994 => 26995)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/src/wp-includes/js/autosave.js     2014-01-22 02:28:13 UTC (rev 26994)
+++ trunk/src/wp-includes/js/autosave.js        2014-01-22 04:55:37 UTC (rev 26995)
</span><span class="lines">@@ -1,688 +1,597 @@
</span><del>-/* global switchEditors, autosaveL10n, tinymce, ajaxurl, wpAjax, makeSlugeditClickable, wpCookies */
-var autosave, autosavePeriodical, fullscreen, doPreview,
-       autosaveLast = '',
-       autosaveDelayPreview = false,
-       notSaved = true,
-       blockSave = false,
-       autosaveLockRelease = true;
</del><ins>+/* global tinymce, wpCookies, autosaveL10n, switchEditors */
+// Back-compat: prevent fatal errors
+window.autosave = function(){};
</ins><span class="cx"> 
</span><del>-jQuery(document).ready( function($) {
</del><ins>+( function( $, window ) {
+       function autosave() {
+               var initialCompareString,
+               lastTriggerSave = 0,
+               isSuspended = false,
+               $document = $(document);
</ins><span class="cx"> 
</span><del>-       if ( $('#wp-content-wrap').hasClass('tmce-active') && typeof switchEditors != 'undefined' ) {
-               autosaveLast = wp.autosave.getCompareString({
-                       post_title : $('#title').val() || '',
-                       content : switchEditors.pre_wpautop( $('#content').val() ) || '',
-                       excerpt : $('#excerpt').val() || ''
-               });
-       } else {
-               autosaveLast = wp.autosave.getCompareString();
-       }
</del><ins>+                /**
+                * Returns the data saved in both local and remote autosave
+                *
+                * @return object Object containing the post data
+                */
+               function getPostData( type ) {
+                       var post_name, parent_id, data,
+                               time = ( new Date() ).getTime(),
+                               cats = [],
+                               editor = typeof tinymce !== 'undefined' && tinymce.get('content');
</ins><span class="cx"> 
</span><del>-       autosavePeriodical = $.schedule({time: autosaveL10n.autosaveInterval * 1000, func: function() { autosave(); }, repeat: true, protect: true});
</del><ins>+                        // Don't run editor.save() more often than every 3 sec.
+                       // It is resource intensive and might slow down typing in long posts on slow devices.
+                       if ( editor && ! editor.isHidden() && time - 3000 > lastTriggerSave ) {
+                               editor.save();
+                               lastTriggerSave = time;
+                       }
</ins><span class="cx"> 
</span><del>-       //Disable autosave after the form has been submitted
-       $('#post').submit(function() {
-               $.cancel(autosavePeriodical);
-               autosaveLockRelease = false;
-       });
</del><ins>+                        data = {
+                               post_id: $( '#post_ID' ).val() || 0,
+                               post_type: $( '#post_type' ).val() || '',
+                               post_author: $( '#post_author' ).val() || '',
+                               post_title: $( '#title' ).val() || '',
+                               content: $( '#content' ).val() || '',
+                               excerpt: $( '#excerpt' ).val() || ''
+                       };
</ins><span class="cx"> 
</span><del>-       $('input[type="submit"], a.submitdelete', '#submitpost').click(function(){
-               blockSave = true;
-               window.onbeforeunload = null;
-               $(':button, :submit', '#submitpost').each(function(){
-                       var t = $(this);
-                       if ( t.hasClass('button-primary') )
-                               t.addClass('button-primary-disabled');
-                       else
-                               t.addClass('button-disabled');
-               });
-               if ( $(this).attr('id') == 'publish' )
-                       $('#major-publishing-actions .spinner').show();
-               else
-                       $('#minor-publishing .spinner').show();
-       });
</del><ins>+                        if ( type === 'local' ) {
+                               return data;
+                       }
</ins><span class="cx"> 
</span><del>-       window.onbeforeunload = function(){
-               var editor = typeof(tinymce) != 'undefined' ? tinymce.activeEditor : false;
</del><ins>+                        $( 'input[id^="in-category-"]:checked' ).each( function() {
+                               cats.push( this.value );
+                       });
+                       data.catslist = cats.join(',');
</ins><span class="cx"> 
</span><del>-               if ( editor && ! editor.isHidden() ) {
-                       if ( editor.isDirty() )
-                               return autosaveL10n.saveAlert;
-               } else {
-                       if ( wp.autosave.getCompareString() != autosaveLast )
-                               return autosaveL10n.saveAlert;
-               }
-       };
</del><ins>+                        if ( post_name = $( '#post_name' ).val() ) {
+                               data.post_name = post_name;
+                       }
</ins><span class="cx"> 
</span><del>-       $(window).unload( function(e) {
-               if ( ! autosaveLockRelease )
-                       return;
</del><ins>+                        if ( parent_id = $( '#parent_id' ).val() ) {
+                               data.parent_id = parent_id;
+                       }
</ins><span class="cx"> 
</span><del>-               // unload fires (twice) on removing the Thickbox iframe. Make sure we process only the main document unload.
-               if ( e.target && e.target.nodeName != '#document' )
-                       return;
</del><ins>+                        if ( $( '#comment_status' ).prop( 'checked' ) ) {
+                               data.comment_status = 'open';
+                       }
</ins><span class="cx"> 
</span><del>-               $.ajax({
-                       type: 'POST',
-                       url: ajaxurl,
-                       async: false,
-                       data: {
-                               action: 'wp-remove-post-lock',
-                               _wpnonce: $('#_wpnonce').val(),
-                               post_ID: $('#post_ID').val(),
-                               active_post_lock: $('#active_post_lock').val()
</del><ins>+                        if ( $( '#ping_status' ).prop( 'checked' ) ) {
+                               data.ping_status = 'open';
</ins><span class="cx">                   }
</span><del>-               });
-       } );
</del><span class="cx"> 
</span><del>-       // preview
-       $('#post-preview').click(function(){
-               if ( $('#auto_draft').val() == '1' && notSaved ) {
-                       autosaveDelayPreview = true;
-                       autosave();
-                       return false;
-               }
-               doPreview();
-               return false;
-       });
</del><ins>+                        if ( $( '#auto_draft' ).val() === '1' ) {
+                               data.auto_draft = '1';
+                       }
</ins><span class="cx"> 
</span><del>-       doPreview = function() {
-               $('input#wp-preview').val('dopreview');
-               $('form#post').attr('target', 'wp-preview').submit().attr('target', '');
-
-               /*
-                * Workaround for WebKit bug preventing a form submitting twice to the same action.
-                * https://bugs.webkit.org/show_bug.cgi?id=28633
-                */
-               var ua = navigator.userAgent.toLowerCase();
-               if ( ua.indexOf('safari') != -1 && ua.indexOf('chrome') == -1 ) {
-                       $('form#post').attr('action', function(index, value) {
-                               return value + '?t=' + new Date().getTime();
-                       });
</del><ins>+                        return data;
</ins><span class="cx">           }
</span><span class="cx"> 
</span><del>-               $('input#wp-preview').val('');
-       };
-
-       // This code is meant to allow tabbing from Title to Post content.
-       $('#title').on( 'keydown.editor-focus', function( event ) {
-               var editor;
-
-               if ( event.which === 9 && ! event.ctrlKey && ! event.altKey && ! event.shiftKey ) {
-                       if ( typeof tinymce !== 'undefined' ) {
-                               editor = tinymce.get('content');
</del><ins>+                // Concatenate title, content and excerpt. Used to track changes when auto-saving.
+               function getCompareString( postData ) {
+                       if ( typeof postData === 'object' ) {
+                               return ( postData.post_title || '' ) + '::' + ( postData.content || '' ) + '::' + ( postData.excerpt || '' );
</ins><span class="cx">                   }
</span><span class="cx"> 
</span><del>-                       if ( editor && ! editor.isHidden() ) {
-                               $(this).one( 'keyup', function() {
-                                       editor.focus();
-                               });
-                       } else {
-                               $('#content').focus();
-                       }
</del><ins>+                        return ( $('#title').val() || '' ) + '::' + ( $('#content').val() || '' ) + '::' + ( $('#excerpt').val() || '' );
+               }
</ins><span class="cx"> 
</span><del>-                       event.preventDefault();
</del><ins>+                function disableButtons() {
+                       $document.trigger('autosave-disable-buttons');
+                       // Re-enable 5 sec later. Just gives autosave a head start to avoid collisions.
+                       setTimeout( enableButtons, 5000 );
</ins><span class="cx">           }
</span><del>-       });
</del><span class="cx"> 
</span><del>-       // autosave new posts after a title is typed but not if Publish or Save Draft is clicked
-       if ( '1' == $('#auto_draft').val() ) {
-               $('#title').blur( function() {
-                       if ( !this.value || $('#auto_draft').val() != '1' )
-                               return;
-                       delayed_autosave();
-               });
-       }
-
-       // When connection is lost, keep user from submitting changes.
-       $(document).on('heartbeat-connection-lost.autosave', function( e, error, status ) {
-               if ( 'timeout' === error || 503 == status ) {
-                       var notice = $('#lost-connection-notice');
-                       if ( ! wp.autosave.local.hasStorage ) {
-                               notice.find('.hide-if-no-sessionstorage').hide();
-                       }
-                       notice.show();
-                       autosave_disable_buttons();
</del><ins>+                function enableButtons() {
+                       $document.trigger( 'autosave-enable-buttons' );
</ins><span class="cx">           }
</span><del>-       }).on('heartbeat-connection-restored.autosave', function() {
-               $('#lost-connection-notice').hide();
-               autosave_enable_buttons();
-       });
-});
</del><span class="cx"> 
</span><del>-function autosave_parse_response( response ) {
-       var res = wpAjax.parseAjaxResponse(response, 'autosave'), post_id, sup;
-
-       if ( res && res.responses && res.responses.length ) {
-               if ( res.responses[0].supplemental ) {
-                       sup = res.responses[0].supplemental;
-
-                       jQuery.each( sup, function( selector, value ) {
-                               if ( selector.match(/^replace-/) )
-                                       jQuery( '#' + selector.replace('replace-', '') ).val( value );
-                       });
</del><ins>+                function suspend() {
+                       isSuspended = true;
</ins><span class="cx">           }
</span><span class="cx"> 
</span><del>-               // if no errors: add slug UI and update autosave-message
-               if ( !res.errors ) {
-                       if ( post_id = parseInt( res.responses[0].id, 10 ) )
-                               autosave_update_slug( post_id );
-
-                       if ( res.responses[0].data ) // update autosave message
-                               jQuery('.autosave-message').text( res.responses[0].data );
</del><ins>+                function resume() {
+                       isSuspended = false;
</ins><span class="cx">           }
</span><del>-       }
</del><span class="cx"> 
</span><del>-       return res;
-}
</del><ins>+                // Autosave in localStorage
+               function autosaveLocal() {
+                       var restorePostData, undoPostData, blog_id, post_id, hasStorage, intervalTimer,
+                               lastCompareString;
</ins><span class="cx"> 
</span><del>-// called when autosaving pre-existing post
-function autosave_saved(response) {
-       blockSave = false;
-       autosave_parse_response(response); // parse the ajax response
-       autosave_enable_buttons(); // re-enable disabled form buttons
-}
</del><ins>+                        // Check if the browser supports sessionStorage and it's not disabled
+                       function checkStorage() {
+                               var test = Math.random().toString(),
+                                       result = false;
</ins><span class="cx"> 
</span><del>-// called when autosaving new post
-function autosave_saved_new(response) {
-       blockSave = false;
-       var res = autosave_parse_response(response), post_id;
</del><ins>+                                try {
+                                       window.sessionStorage.setItem( 'wp-test', test );
+                                       result = window.sessionStorage.getItem( 'wp-test' ) === test;
+                                       window.sessionStorage.removeItem( 'wp-test' );
+                               } catch(e) {}
</ins><span class="cx"> 
</span><del>-       if ( res && res.responses.length && !res.errors ) {
-               // An ID is sent only for real auto-saves, not for autosave=0 "keepalive" saves
-               post_id = parseInt( res.responses[0].id, 10 );
</del><ins>+                                hasStorage = result;
+                               return result;
+                       }
</ins><span class="cx"> 
</span><del>-               if ( post_id ) {
-                       notSaved = false;
-                       jQuery('#auto_draft').val('0'); // No longer an auto-draft
-               }
</del><ins>+                        /**
+                        * Initialize the local storage
+                        *
+                        * @return mixed False if no sessionStorage in the browser or an Object containing all postData for this blog
+                        */
+                       function getStorage() {
+                               var stored_obj = false;
+                               // Separate local storage containers for each blog_id
+                               if ( hasStorage && blog_id ) {
+                                       stored_obj = sessionStorage.getItem( 'wp-autosave-' + blog_id );
</ins><span class="cx"> 
</span><del>-               autosave_enable_buttons();
-
-               if ( autosaveDelayPreview ) {
-                       autosaveDelayPreview = false;
-                       doPreview();
-               }
-       } else {
-               autosave_enable_buttons(); // re-enable disabled form buttons
-       }
-}
-
-function autosave_update_slug(post_id) {
-       // create slug area only if not already there
-       if ( 'undefined' != makeSlugeditClickable && jQuery.isFunction(makeSlugeditClickable) && !jQuery('#edit-slug-box > *').size() ) {
-               jQuery.post( ajaxurl, {
-                               action: 'sample-permalink',
-                               post_id: post_id,
-                               new_title: fullscreen && fullscreen.settings.visible ? jQuery('#wp-fullscreen-title').val() : jQuery('#title').val(),
-                               samplepermalinknonce: jQuery('#samplepermalinknonce').val()
-                       },
-                       function(data) {
-                               if ( data !== '-1' ) {
-                                       var box = jQuery('#edit-slug-box');
-                                       box.html(data);
-                                       if (box.hasClass('hidden')) {
-                                               box.fadeIn('fast', function () {
-                                                       box.removeClass('hidden');
-                                               });
</del><ins>+                                        if ( stored_obj ) {
+                                               stored_obj = JSON.parse( stored_obj );
+                                       } else {
+                                               stored_obj = {};
</ins><span class="cx">                                   }
</span><del>-                                       makeSlugeditClickable();
</del><span class="cx">                           }
</span><ins>+
+                               return stored_obj;
</ins><span class="cx">                   }
</span><del>-               );
-       }
-}
</del><span class="cx"> 
</span><del>-function autosave_loading() {
-       jQuery('.autosave-message').html(autosaveL10n.savingText);
-}
</del><ins>+                        /**
+                        * Set the storage for this blog
+                        *
+                        * Confirms that the data was saved successfully.
+                        *
+                        * @return bool
+                        */
+                       function setStorage( stored_obj ) {
+                               var key;
</ins><span class="cx"> 
</span><del>-function autosave_enable_buttons() {
-       jQuery(document).trigger('autosave-enable-buttons');
-       if ( ! wp.heartbeat || ! wp.heartbeat.hasConnectionError() ) {
-               // delay that a bit to avoid some rare collisions while the DOM is being updated.
-               setTimeout(function(){
-                       var parent = jQuery('#submitpost');
-                       parent.find(':button, :submit').removeAttr('disabled');
-                       parent.find('.spinner').hide();
-               }, 500);
-       }
-}
</del><ins>+                                if ( hasStorage && blog_id ) {
+                                       key = 'wp-autosave-' + blog_id;
+                                       sessionStorage.setItem( key, JSON.stringify( stored_obj ) );
+                                       return sessionStorage.getItem( key ) !== null;
+                               }
</ins><span class="cx"> 
</span><del>-function autosave_disable_buttons() {
-       jQuery(document).trigger('autosave-disable-buttons');
-       jQuery('#submitpost').find(':button, :submit').prop('disabled', true);
-       // Re-enable 5 sec later. Just gives autosave a head start to avoid collisions.
-       setTimeout( autosave_enable_buttons, 5000 );
-}
</del><ins>+                                return false;
+                       }
</ins><span class="cx"> 
</span><del>-function delayed_autosave() {
-       setTimeout(function(){
-               if ( blockSave )
-                       return;
-               autosave();
-       }, 200);
-}
</del><ins>+                        /**
+                        * Get the saved post data for the current post
+                        *
+                        * @return mixed False if no storage or no data or the postData as an Object
+                        */
+                       function getSavedPostData() {
+                               var stored = getStorage();
</ins><span class="cx"> 
</span><del>-autosave = function() {
-       var post_data = wp.autosave.getPostData(),
-               compareString,
-               successCallback;
</del><ins>+                                if ( ! stored || ! post_id ) {
+                                       return false;
+                               }
</ins><span class="cx"> 
</span><del>-       blockSave = true;
</del><ins>+                                return stored[ 'post_' + post_id ] || false;
+                       }
</ins><span class="cx"> 
</span><del>-       // post_data.content cannot be retrieved at the moment
-       if ( ! post_data.autosave )
-               return false;
</del><ins>+                        /**
+                        * Set (save or delete) post data in the storage.
+                        *
+                        * If stored_data evaluates to 'false' the storage key for the current post will be removed
+                        *
+                        * $param stored_data The post data to store or null/false/empty to delete the key
+                        * @return bool
+                        */
+                       function setData( stored_data ) {
+                               var stored = getStorage();
</ins><span class="cx"> 
</span><del>-       // No autosave while thickbox is open (media buttons)
-       if ( jQuery('#TB_window').css('display') == 'block' )
-               return false;
</del><ins>+                                if ( ! stored || ! post_id ) {
+                                       return false;
+                               }
</ins><span class="cx"> 
</span><del>-       compareString = wp.autosave.getCompareString( post_data );
</del><ins>+                                if ( stored_data ) {
+                                       stored[ 'post_' + post_id ] = stored_data;
+                               } else if ( stored.hasOwnProperty( 'post_' + post_id ) ) {
+                                       delete stored[ 'post_' + post_id ];
+                               } else {
+                                       return false;
+                               }
</ins><span class="cx"> 
</span><del>-       // Nothing to save or no change.
-       if ( compareString == autosaveLast )
-               return false;
</del><ins>+                                return setStorage( stored );
+                       }
</ins><span class="cx"> 
</span><del>-       autosaveLast = compareString;
-       jQuery(document).triggerHandler('wpcountwords', [ post_data.content ]);
</del><ins>+                        /**
+                        * Save post data for the current post
+                        *
+                        * Runs on a 15 sec. interval, saves when there are differences in the post title or content.
+                        * When the optional data is provided, updates the last saved post data.
+                        *
+                        * $param data optional Object The post data for saving, minimum 'post_title' and 'content'
+                        * @return bool
+                        */
+                       function save( data ) {
+                               var postData, compareString,
+                                       result = false;
</ins><span class="cx"> 
</span><del>-       // Disable buttons until we know the save completed.
-       autosave_disable_buttons();
</del><ins>+                                if ( isSuspended ) {
+                                       return false;
+                               }
</ins><span class="cx"> 
</span><del>-       if ( post_data.auto_draft == '1' ) {
-               successCallback = autosave_saved_new; // new post
-       } else {
-               successCallback = autosave_saved; // pre-existing post
-       }
</del><ins>+                                if ( data ) {
+                                       postData = getSavedPostData() || {};
+                                       $.extend( postData, data );
+                               } else {
+                                       postData = getPostData('local');
+                               }
</ins><span class="cx"> 
</span><del>-       jQuery.ajax({
-               data: post_data,
-               beforeSend: autosave_loading,
-               type: 'POST',
-               url: ajaxurl,
-               success: successCallback
-       });
</del><ins>+                                compareString = getCompareString( postData );
</ins><span class="cx"> 
</span><del>-       return true;
-};
</del><ins>+                                if ( typeof lastCompareString === 'undefined' ) {
+                                       lastCompareString = initialCompareString;
+                               }
</ins><span class="cx"> 
</span><del>-// Autosave in localStorage
-// set as simple object/mixin for now
-window.wp = window.wp || {};
-wp.autosave = wp.autosave || {};
</del><ins>+                                // If the content, title and excerpt did not change since the last save, don't save again
+                               if ( compareString === lastCompareString ) {
+                                       return false;
+                               }
</ins><span class="cx"> 
</span><del>-(function($){
-// Returns the data for saving in both localStorage and autosaves to the server
-wp.autosave.getPostData = function() {
-       var ed = typeof tinymce != 'undefined' ? tinymce.activeEditor : null, post_name, parent_id, cats = [],
-               data = {
-                       action: 'autosave',
-                       autosave: true,
-                       post_id: $('#post_ID').val() || 0,
-                       autosavenonce: $('#autosavenonce').val() || '',
-                       post_type: $('#post_type').val() || '',
-                       post_author: $('#post_author').val() || '',
-                       excerpt: $('#excerpt').val() || ''
-               };
</del><ins>+                                postData.save_time = ( new Date() ).getTime();
+                               postData.status = $( '#post_status' ).val() || '';
+                               result = setData( postData );
</ins><span class="cx"> 
</span><del>-       if ( ed && !ed.isHidden() ) {
-               // Don't run while the tinymce spellcheck is on. It resets all found words.
-               if ( ed.plugins.spellchecker && ed.plugins.spellchecker.active ) {
-                       data.autosave = false;
-                       return data;
-               } else {
-                       tinymce.triggerSave();
-               }
-       }
</del><ins>+                                if ( result ) {
+                                       lastCompareString = compareString;
+                               }
</ins><span class="cx"> 
</span><del>-       data.post_title = $('#title').val() || '';
-       data.content = $('#content').val() || '';
</del><ins>+                                return result;
+                       }
</ins><span class="cx"> 
</span><del>-       /*
-       // We haven't been saving tags with autosave since 2.8... Start again?
-       $('.the-tags').each( function() {
-               data[this.name] = this.value;
-       });
-       */
</del><ins>+                        // Run on DOM ready
+                       function run() {
+                               post_id = $('#post_ID').val() || 0;
</ins><span class="cx"> 
</span><del>-       $('input[id^="in-category-"]:checked').each( function() {
-               cats.push(this.value);
-       });
-       data.catslist = cats.join(',');
</del><ins>+                                // Check if the local post data is different than the loaded post data.
+                               if ( $( '#wp-content-wrap' ).hasClass( 'tmce-active' ) ) {
+                                       // If TinyMCE loads first, check the post 1.5 sec. after it is ready.
+                                       // By this time the content has been loaded in the editor and 'saved' to the textarea.
+                                       // This prevents false positives.
+                                       $document.on( 'tinymce-editor-init.autosave', function() {
+                                               window.setTimeout( function() {
+                                                       checkPost();
+                                               }, 1500 );
+                                       });
+                               } else {
+                                       checkPost();
+                               }
</ins><span class="cx"> 
</span><del>-       if ( post_name = $('#post_name').val() )
-               data.post_name = post_name;
</del><ins>+                                // Save every 15 sec.
+                               intervalTimer = window.setInterval( save, 15000 );
</ins><span class="cx"> 
</span><del>-       if ( parent_id = $('#parent_id').val() )
-               data.parent_id = parent_id;
</del><ins>+                                $( 'form#post' ).on( 'submit.autosave-local', function() {
+                                       var editor = typeof tinymce !== 'undefined' && tinymce.get('content'),
+                                               post_id = $('#post_ID').val() || 0;
</ins><span class="cx"> 
</span><del>-       if ( $('#comment_status').prop('checked') )
-               data.comment_status = 'open';
</del><ins>+                                        if ( editor && ! editor.isHidden() ) {
+                                               // Last onSubmit event in the editor, needs to run after the content has been moved to the textarea.
+                                               editor.on( 'submit', function() {
+                                                       save({
+                                                               post_title: $( '#title' ).val() || '',
+                                                               content: $( '#content' ).val() || '',
+                                                               excerpt: $( '#excerpt' ).val() || ''
+                                                       });
+                                               });
+                                       } else {
+                                               save({
+                                                       post_title: $( '#title' ).val() || '',
+                                                       content: $( '#content' ).val() || '',
+                                                       excerpt: $( '#excerpt' ).val() || ''
+                                               });
+                                       }
</ins><span class="cx"> 
</span><del>-       if ( $('#ping_status').prop('checked') )
-               data.ping_status = 'open';
</del><ins>+                                        wpCookies.set( 'wp-saving-post-' + post_id, 'check' );
+                               });
+                       }
</ins><span class="cx"> 
</span><del>-       if ( $('#auto_draft').val() == '1' )
-               data.auto_draft = '1';
</del><ins>+                        // Strip whitespace and compare two strings
+                       function compare( str1, str2 ) {
+                               function removeSpaces( string ) {
+                                       return string.toString().replace(/[\x20\t\r\n\f]+/g, '');
+                               }
</ins><span class="cx"> 
</span><del>-       return data;
-};
</del><ins>+                                return ( removeSpaces( str1 || '' ) === removeSpaces( str2 || '' ) );
+                       }
</ins><span class="cx"> 
</span><del>-// Concatenate title, content and excerpt. Used to track changes when auto-saving.
-wp.autosave.getCompareString = function( post_data ) {
-       if ( typeof post_data === 'object' ) {
-               return ( post_data.post_title || '' ) + '::' + ( post_data.content || '' ) + '::' + ( post_data.excerpt || '' );
-       }
</del><ins>+                        /**
+                        * Check if the saved data for the current post (if any) is different than the loaded post data on the screen
+                        *
+                        * Shows a standard message letting the user restore the post data if different.
+                        *
+                        * @return void
+                        */
+                       function checkPost() {
+                               var content, post_title, excerpt, $notice,
+                                       postData = getSavedPostData(),
+                                       cookie = wpCookies.get( 'wp-saving-post-' + post_id );
</ins><span class="cx"> 
</span><del>-       return ( $('#title').val() || '' ) + '::' + ( $('#content').val() || '' ) + '::' + ( $('#excerpt').val() || '' );
-};
</del><ins>+                                if ( ! postData ) {
+                                       return;
+                               }
</ins><span class="cx"> 
</span><del>-wp.autosave.local = {
</del><ins>+                                if ( cookie ) {
+                                       wpCookies.remove( 'wp-saving-post-' + post_id );
</ins><span class="cx"> 
</span><del>-       lastSavedData: '',
-       blog_id: 0,
-       hasStorage: false,
</del><ins>+                                        if ( cookie === 'saved' ) {
+                                               // The post was saved properly, remove old data and bail
+                                               setData( false );
+                                               return;
+                                       }
+                               }
</ins><span class="cx"> 
</span><del>-       // Check if the browser supports sessionStorage and it's not disabled
-       checkStorage: function() {
-               var test = Math.random(), result = false;
</del><ins>+                                // There is a newer autosave. Don't show two "restore" notices at the same time.
+                               if ( $( '#has-newer-autosave' ).length ) {
+                                       return;
+                               }
</ins><span class="cx"> 
</span><del>-               try {
-                       sessionStorage.setItem('wp-test', test);
-                       result = sessionStorage.getItem('wp-test') == test;
-                       sessionStorage.removeItem('wp-test');
-               } catch(e) {}
</del><ins>+                                content = $( '#content' ).val() || '';
+                               post_title = $( '#title' ).val() || '';
+                               excerpt = $( '#excerpt' ).val() || '';
</ins><span class="cx"> 
</span><del>-               this.hasStorage = result;
-               return result;
-    },
</del><ins>+                                // cookie == 'check' means the post was not saved properly, always show #local-storage-notice
+                               if ( cookie !== 'check' && compare( content, postData.content ) &&
+                                       compare( post_title, postData.post_title ) && compare( excerpt, postData.excerpt ) ) {
</ins><span class="cx"> 
</span><del>-       /**
-        * Initialize the local storage
-        *
-        * @return mixed False if no sessionStorage in the browser or an Object containing all post_data for this blog
-        */
-       getStorage: function() {
-               var stored_obj = false;
-               // Separate local storage containers for each blog_id
-               if ( this.hasStorage && this.blog_id ) {
-                       stored_obj = sessionStorage.getItem( 'wp-autosave-' + this.blog_id );
</del><ins>+                                        return;
+                               }
</ins><span class="cx"> 
</span><del>-                       if ( stored_obj )
-                               stored_obj = JSON.parse( stored_obj );
-                       else
-                               stored_obj = {};
-               }
</del><ins>+                                restorePostData = postData;
+                               undoPostData = {
+                                       content: content,
+                                       post_title: post_title,
+                                       excerpt: excerpt
+                               };
</ins><span class="cx"> 
</span><del>-               return stored_obj;
-       },
</del><ins>+                                $notice = $( '#local-storage-notice' );
+                               $('.wrap h2').first().after( $notice.addClass( 'updated' ).show() );
</ins><span class="cx"> 
</span><del>-       /**
-        * Set the storage for this blog
-        *
-        * Confirms that the data was saved successfully.
-        *
-        * @return bool
-        */
-       setStorage: function( stored_obj ) {
-               var key;
</del><ins>+                                $notice.on( 'click.autosae-local', function( event ) {
+                                       var $target = $( event.target );
</ins><span class="cx"> 
</span><del>-               if ( this.hasStorage && this.blog_id ) {
-                       key = 'wp-autosave-' + this.blog_id;
-                       sessionStorage.setItem( key, JSON.stringify( stored_obj ) );
-                       return sessionStorage.getItem( key ) !== null;
-               }
</del><ins>+                                        if ( $target.hasClass( 'restore-backup' ) ) {
+                                               restorePost( restorePostData );
+                                               $target.parent().hide();
+                                               $(this).find( 'p.undo-restore' ).show();
+                                       } else if ( $target.hasClass( 'undo-restore-backup' ) ) {
+                                               restorePost( undoPostData );
+                                               $target.parent().hide();
+                                               $(this).find( 'p.local-restore' ).show();
+                                       }
</ins><span class="cx"> 
</span><del>-               return false;
-       },
</del><ins>+                                        event.preventDefault();
+                               });
+                       }
</ins><span class="cx"> 
</span><del>-       /**
-        * Get the saved post data for the current post
-        *
-        * @return mixed False if no storage or no data or the post_data as an Object
-        */
-       getData: function() {
-               var stored = this.getStorage(), post_id = $('#post_ID').val();
</del><ins>+                        // Restore the current title, content and excerpt from postData.
+                       function restorePost( postData ) {
+                               var editor;
</ins><span class="cx"> 
</span><del>-               if ( !stored || !post_id )
-                       return false;
</del><ins>+                                if ( postData ) {
+                                       // Set the last saved data
+                                       lastCompareString = getCompareString( postData );
</ins><span class="cx"> 
</span><del>-               return stored[ 'post_' + post_id ] || false;
-       },
</del><ins>+                                        if ( $( '#title' ).val() !== postData.post_title ) {
+                                               $( '#title' ).focus().val( postData.post_title || '' );
+                                       }
</ins><span class="cx"> 
</span><del>-       /**
-        * Set (save or delete) post data in the storage.
-        *
-        * If stored_data evaluates to 'false' the storage key for the current post will be removed
-        *
-        * $param stored_data The post data to store or null/false/empty to delete the key
-        * @return bool
-        */
-       setData: function( stored_data ) {
-               var stored = this.getStorage(), post_id = $('#post_ID').val();
</del><ins>+                                        $( '#excerpt' ).val( postData.excerpt || '' );
+                                       editor = typeof tinymce !== 'undefined' && tinymce.get('content');
</ins><span class="cx"> 
</span><del>-               if ( !stored || !post_id )
-                       return false;
</del><ins>+                                        if ( editor && ! editor.isHidden() && typeof switchEditors !== 'undefined' ) {
+                                               // Make sure there's an undo level in the editor
+                                               editor.undoManager.add();
+                                               editor.setContent( postData.content ? switchEditors.wpautop( postData.content ) : '' );
+                                       } else {
+                                               // Make sure the Text editor is selected
+                                               $( '#content-html' ).click();
+                                               $( '#content' ).val( postData.content );
+                                       }
</ins><span class="cx"> 
</span><del>-               if ( stored_data )
-                       stored[ 'post_' + post_id ] = stored_data;
-               else if ( stored.hasOwnProperty( 'post_' + post_id ) )
-                       delete stored[ 'post_' + post_id ];
-               else
-                       return false;
</del><ins>+                                        return true;
+                               }
</ins><span class="cx"> 
</span><del>-               return this.setStorage(stored);
-       },
</del><ins>+                                return false;
+                       }
</ins><span class="cx"> 
</span><del>-       /**
-        * Save post data for the current post
-        *
-        * Runs on a 15 sec. schedule, saves when there are differences in the post title or content.
-        * When the optional data is provided, updates the last saved post data.
-        *
-        * $param data optional Object The post data for saving, minimum 'post_title' and 'content'
-        * @return bool
-        */
-       save: function( data ) {
-               var result = false, post_data, compareString;
</del><ins>+                        // Initialize and run checkPost() on loading the script (before TinyMCE init)
+                       blog_id = typeof window.autosaveL10n !== 'undefined' && window.autosaveL10n.blog_id;
</ins><span class="cx"> 
</span><del>-               if ( ! data ) {
-                       post_data = wp.autosave.getPostData();
-               } else {
-                       post_data = this.getData() || {};
-                       $.extend( post_data, data );
-                       post_data.autosave = true;
-               }
</del><ins>+                        // Check if the browser supports sessionStorage and it's not disabled
+                       if ( ! checkStorage() ) {
+                               return;
+                       }
</ins><span class="cx"> 
</span><del>-               // Cannot get the post data at the moment
-               if ( ! post_data.autosave )
-                       return false;
</del><ins>+                        // Don't run if the post type supports neither 'editor' (textarea#content) nor 'excerpt'.
+                       if ( ! blog_id || ( ! $('#content').length && ! $('#excerpt').length ) ) {
+                               return;
+                       }
</ins><span class="cx"> 
</span><del>-               compareString = wp.autosave.getCompareString( post_data );
</del><ins>+                        $document.ready( run );
</ins><span class="cx"> 
</span><del>-               // If the content, title and excerpt did not change since the last save, don't save again
-               if ( compareString == this.lastSavedData )
-                       return false;
</del><ins>+                        return {
+                               hasStorage: hasStorage,
+                               getSavedPostData: getSavedPostData,
+                               save: save
+                       };
+               }
</ins><span class="cx"> 
</span><del>-               post_data.save_time = (new Date()).getTime();
-               post_data.status = $('#post_status').val() || '';
-               result = this.setData( post_data );
</del><ins>+                // Autosave on the server
+               function autosaveServer() {
+                       var _disabled, _blockSave, _blockSaveTimer, previousCompareString, lastCompareString,
+                               nextRun = 0;
</ins><span class="cx"> 
</span><del>-               if ( result )
-                       this.lastSavedData = compareString;
</del><ins>+                        // Block saving for the next 10 sec.
+                       function tempBlockSave() {
+                               _blockSave = true;
+                               window.clearTimeout( _blockSaveTimer );
</ins><span class="cx"> 
</span><del>-               return result;
-       },
</del><ins>+                                _blockSaveTimer = window.setTimeout( function() {
+                                       _blockSave = false;
+                               }, 10000 );
+                       }
</ins><span class="cx"> 
</span><del>-       // Initialize and run checkPost() on loading the script (before TinyMCE init)
-       init: function( settings ) {
-               var self = this;
</del><ins>+                        // Runs on heartbeat-response
+                       function response( data ) {
+                               _schedule();
+                               _blockSave = false;
+                               lastCompareString = previousCompareString;
+                               previousCompareString = '';
</ins><span class="cx"> 
</span><del>-               // Check if the browser supports sessionStorage and it's not disabled
-               if ( ! this.checkStorage() )
-                       return;
</del><ins>+                                $document.trigger( 'after-autosave', [data] );
+                               $( '.autosave-message' ).text( data.message );
+                               enableButtons();
</ins><span class="cx"> 
</span><del>-               // Don't run if the post type supports neither 'editor' (textarea#content) nor 'excerpt'.
-               if ( ! $('#content').length && ! $('#excerpt').length )
-                       return;
</del><ins>+                                if ( data.success ) {
+                                       // No longer an auto-draft
+                                       $( '#auto_draft' ).val('');
+                               }
+                       }
</ins><span class="cx"> 
</span><del>-               if ( settings )
-                       $.extend( this, settings );
</del><ins>+                        /**
+                        * Disable autosave
+                        *
+                        * Intended to run on form.submit
+                        */
+                       function disable() {
+                               _disabled = true;
+                       }
</ins><span class="cx"> 
</span><del>-               if ( !this.blog_id )
-                       this.blog_id = typeof window.autosaveL10n != 'undefined' ? window.autosaveL10n.blog_id : 0;
</del><ins>+                        /**
+                        * Save immediately
+                        *
+                        * Resets the timing and tells heartbeat to connect now
+                        *
+                        * @return void
+                        */
+                       function triggerSave() {
+                               nextRun = 0;
+                               wp.heartbeat.connectNow();
+                       }
</ins><span class="cx"> 
</span><del>-               $(document).ready( function(){ self.run(); } );
-       },
</del><ins>+                        /**
+                        * Checks if the post content in the textarea has changed since page load.
+                        *
+                        * This also happens when TinyMCE is active and editor.save() is triggered by
+                        * wp.autosave.getPostData().
+                        *
+                        * @return bool
+                        */
+                       function postChanged() {
+                               return getCompareString() !== initialCompareString;
+                       }
</ins><span class="cx"> 
</span><del>-       // Run on DOM ready
-       run: function() {
-               var self = this;
</del><ins>+                        // Runs on 'heartbeat-send'
+                       function save() {
+                               var postData, compareString;
</ins><span class="cx"> 
</span><del>-               // Check if the local post data is different than the loaded post data.
-               this.checkPost();
</del><ins>+                                if ( isSuspended || _disabled || _blockSave ) {
+                                       return false;
+                               }
</ins><span class="cx"> 
</span><del>-               // Set the schedule
-               this.schedule = $.schedule({
-                       time: 15 * 1000,
-                       func: function() { wp.autosave.local.save(); },
-                       repeat: true,
-                       protect: true
-               });
</del><ins>+                                if ( ( new Date() ).getTime() < nextRun ) {
+                                       return false;
+                               }
</ins><span class="cx"> 
</span><del>-               $('form#post').on('submit.autosave-local', function() {
-                       var editor = typeof tinymce != 'undefined' && tinymce.get('content'), post_id = $('#post_ID').val() || 0;
</del><ins>+                                postData = getPostData();
+                               compareString = getCompareString( postData );
</ins><span class="cx"> 
</span><del>-                       if ( editor && ! editor.isHidden() ) {
-                               // Last onSubmit event in the editor, needs to run after the content has been moved to the textarea.
-                               editor.onSubmit.add( function() {
-                                       wp.autosave.local.save({
-                                               post_title: $('#title').val() || '',
-                                               content: $('#content').val() || '',
-                                               excerpt: $('#excerpt').val() || ''
-                                       });
-                               });
-                       } else {
-                               self.save({
-                                       post_title: $('#title').val() || '',
-                                       content: $('#content').val() || '',
-                                       excerpt: $('#excerpt').val() || ''
-                               });
-                       }
</del><ins>+                                // First check
+                               if ( typeof lastCompareString === 'undefined' ) {
+                                       lastCompareString = initialCompareString;
+                               }
</ins><span class="cx"> 
</span><del>-                       wpCookies.set( 'wp-saving-post-' + post_id, 'check' );
-               });
-       },
</del><ins>+                                // No change
+                               if ( compareString === lastCompareString ) {
+                                       return false;
+                               }
</ins><span class="cx"> 
</span><del>-       // Strip whitespace and compare two strings
-       compare: function( str1, str2 ) {
-               function remove( string ) {
-                       return string.toString().replace(/[\x20\t\r\n\f]+/g, '');
-               }
</del><ins>+                                previousCompareString = compareString;
+                               tempBlockSave();
+                               disableButtons();
</ins><span class="cx"> 
</span><del>-               return ( remove( str1 || '' ) == remove( str2 || '' ) );
-       },
</del><ins>+                                $document.trigger( 'wpcountwords', [ postData.content ] )
+                                       .trigger( 'before-autosave', [ postData ] );
</ins><span class="cx"> 
</span><del>-       /**
-        * Check if the saved data for the current post (if any) is different than the loaded post data on the screen
-        *
-        * Shows a standard message letting the user restore the post data if different.
-        *
-        * @return void
-        */
-       checkPost: function() {
-               var self = this, post_data = this.getData(), content, post_title, excerpt, notice,
-                       post_id = $('#post_ID').val() || 0, cookie = wpCookies.get( 'wp-saving-post-' + post_id );
</del><ins>+                                $( '.autosave-message' ).text( autosaveL10n.savingText );
+                               postData._wpnonce = $( '#_wpnonce' ).val() || '';
</ins><span class="cx"> 
</span><del>-               if ( ! post_data )
-                       return;
</del><ins>+                                return postData;
+                       }
</ins><span class="cx"> 
</span><del>-               if ( cookie ) {
-                       wpCookies.remove( 'wp-saving-post-' + post_id );
-
-                       if ( cookie == 'saved' ) {
-                               // The post was saved properly, remove old data and bail
-                               this.setData( false );
-                               return;
</del><ins>+                        function _schedule() {
+                               nextRun = ( new Date() ).getTime() + ( autosaveL10n.autosaveInterval * 1000 ) || 60000;
</ins><span class="cx">                   }
</span><del>-               }
</del><span class="cx"> 
</span><del>-               // There is a newer autosave. Don't show two "restore" notices at the same time.
-               if ( $('#has-newer-autosave').length )
-                       return;
</del><ins>+                        $document.on( 'heartbeat-send.autosave', function( event, data ) {
+                               var autosaveData = save();
</ins><span class="cx"> 
</span><del>-               content = $('#content').val() || '';
-               post_title = $('#title').val() || '';
-               excerpt = $('#excerpt').val() || '';
</del><ins>+                                if ( autosaveData ) {
+                                       data.wp_autosave = autosaveData;
+                               }
+                       }).on( 'heartbeat-tick.autosave', function( event, data ) {
+                               if ( data.wp_autosave ) {
+                                       response( data.wp_autosave );
+                               }
+                       }).on( 'heartbeat-connection-lost.autosave', function( event, error, status ) {
+                               // When connection is lost, keep user from submitting changes.
+                               if ( 'timeout' === error || 603 === status ) {
+                                       var $notice = $('#lost-connection-notice');
</ins><span class="cx"> 
</span><del>-               if ( $('#wp-content-wrap').hasClass('tmce-active') && typeof switchEditors != 'undefined' )
-                       content = switchEditors.pre_wpautop( content );
</del><ins>+                                        if ( ! wp.autosave.local.hasStorage ) {
+                                               $notice.find('.hide-if-no-sessionstorage').hide();
+                                       }
</ins><span class="cx"> 
</span><del>-               // cookie == 'check' means the post was not saved properly, always show #local-storage-notice
-               if ( cookie != 'check' && this.compare( content, post_data.content ) && this.compare( post_title, post_data.post_title ) && this.compare( excerpt, post_data.excerpt ) ) {
-                       return;
</del><ins>+                                        $notice.show();
+                                       disableButtons();
+                               }
+                       }).on( 'heartbeat-connection-restored.autosave', function() {
+                               $('#lost-connection-notice').hide();
+                               enableButtons();
+                       }).ready( function() {
+                               _schedule();
+                       });
+
+                       return {
+                               disable: disable,
+                               tempBlockSave: tempBlockSave,
+                               triggerSave: triggerSave,
+                               postChanged: postChanged
+                       };
</ins><span class="cx">           }
</span><span class="cx"> 
</span><del>-               this.restore_post_data = post_data;
-               this.undo_post_data = {
-                       content: content,
-                       post_title: post_title,
-                       excerpt: excerpt
-               };
-
-               notice = $('#local-storage-notice');
-               $('.wrap h2').first().after( notice.addClass('updated').show() );
-
-               notice.on( 'click', function(e) {
-                       var target = $( e.target );
-
-                       if ( target.hasClass('restore-backup') ) {
-                               self.restorePost( self.restore_post_data );
-                               target.parent().hide();
-                               $(this).find('p.undo-restore').show();
-                       } else if ( target.hasClass('undo-restore-backup') ) {
-                               self.restorePost( self.undo_post_data );
-                               target.parent().hide();
-                               $(this).find('p.local-restore').show();
</del><ins>+                // Wait for TinyMCE to initialize plus 1 sec. for any external css to finish loading,
+               // then 'save' to the textarea before setting initialCompareString.
+               // This avoids any insignificant differences between the initial textarea content and the content
+               // extracted from the editor.
+               $document.on( 'tinymce-editor-init.autosave', function( event, editor ) {
+                       if ( editor.id === 'content' ) {
+                               window.setTimeout( function() {
+                                       editor.save();
+                                       initialCompareString = getCompareString();
+                               }, 1000 );
</ins><span class="cx">                   }
</span><del>-
-                       e.preventDefault();
</del><ins>+                }).ready( function() {
+                       // Set the initial compare string in case TinyMCE is not used or not loaded first
+                       initialCompareString = getCompareString();
</ins><span class="cx">           });
</span><del>-       },
</del><span class="cx"> 
</span><del>-       // Restore the current title, content and excerpt from post_data.
-       restorePost: function( post_data ) {
-               var editor;
-
-               if ( post_data ) {
-                       // Set the last saved data
-                       this.lastSavedData = wp.autosave.getCompareString( post_data );
-
-                       if ( $('#title').val() != post_data.post_title )
-                               $('#title').focus().val( post_data.post_title || '' );
-
-                       $('#excerpt').val( post_data.excerpt || '' );
-                       editor = typeof tinymce != 'undefined' && tinymce.get('content');
-
-                       if ( editor && ! editor.isHidden() && typeof switchEditors != 'undefined' ) {
-                               // Make sure there's an undo level in the editor
-                               editor.undoManager.add();
-                               editor.setContent( post_data.content ? switchEditors.wpautop( post_data.content ) : '' );
-                       } else {
-                               // Make sure the Text editor is selected
-                               $('#content-html').click();
-                               $('#content').val( post_data.content );
-                       }
-
-                       return true;
-               }
-
-               return false;
</del><ins>+                return {
+                       getPostData: getPostData,
+                       getCompareString: getCompareString,
+                       disableButtons: disableButtons,
+                       enableButtons: enableButtons,
+                       suspend: suspend,
+                       resume: resume,
+                       local: autosaveLocal(),
+                       server: autosaveServer()
+               };
</ins><span class="cx">   }
</span><del>-};
</del><span class="cx"> 
</span><del>-wp.autosave.local.init();
</del><ins>+        window.wp = window.wp || {};
+       window.wp.autosave = autosave();
</ins><span class="cx"> 
</span><del>-}(jQuery));
</del><ins>+}( jQuery, window ));
</ins></span></pre></div>
<a id="trunksrcwpincludesrevisionphp"></a>
<div class="modfile"><h4>Modified: trunk/src/wp-includes/revision.php (26994 => 26995)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/src/wp-includes/revision.php       2014-01-22 02:28:13 UTC (rev 26994)
+++ trunk/src/wp-includes/revision.php  2014-01-22 04:55:37 UTC (rev 26995)
</span><span class="lines">@@ -215,7 +215,7 @@
</span><span class="cx">  *
</span><span class="cx">  * @param int|object|array $post Post ID, post object OR post array.
</span><span class="cx">  * @param bool $autosave Optional. Is the revision an autosave?
</span><del>- * @return mixed Null or 0 if error, new revision ID if success.
</del><ins>+ * @return mixed WP_Error or 0 if error, new revision ID if success.
</ins><span class="cx">  */
</span><span class="cx"> function _wp_put_post_revision( $post = null, $autosave = false ) {
</span><span class="cx">  if ( is_object($post) )
</span><span class="lines">@@ -223,8 +223,8 @@
</span><span class="cx">  elseif ( !is_array($post) )
</span><span class="cx">          $post = get_post($post, ARRAY_A);
</span><span class="cx"> 
</span><del>-       if ( !$post || empty($post['ID']) )
-               return;
</del><ins>+        if ( ! $post || empty($post['ID']) )
+               return new WP_Error( 'invalid_post', __( 'Invalid post ID' ) );
</ins><span class="cx"> 
</span><span class="cx">  if ( isset($post['post_type']) && 'revision' == $post['post_type'] )
</span><span class="cx">          return new WP_Error( 'post_type', __( 'Cannot create a revision of a revision' ) );
</span></span></pre></div>
<a id="trunktestsphpunitincludestestcaseajaxphp"></a>
<div class="modfile"><h4>Modified: trunk/tests/phpunit/includes/testcase-ajax.php (26994 => 26995)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/tests/phpunit/includes/testcase-ajax.php   2014-01-22 02:28:13 UTC (rev 26994)
+++ trunk/tests/phpunit/includes/testcase-ajax.php      2014-01-22 04:55:37 UTC (rev 26995)
</span><span class="lines">@@ -42,12 +42,12 @@
</span><span class="cx">          'oembed_cache', 'image-editor', 'delete-comment', 'delete-tag', 'delete-link',
</span><span class="cx">          'delete-meta', 'delete-post', 'trash-post', 'untrash-post', 'delete-page', 'dim-comment',
</span><span class="cx">          'add-link-category', 'add-tag', 'get-tagcloud', 'get-comments', 'replyto-comment',
</span><del>-               'edit-comment', 'add-menu-item', 'add-meta', 'add-user', 'autosave', 'closed-postboxes',
</del><ins>+                'edit-comment', 'add-menu-item', 'add-meta', 'add-user', 'closed-postboxes',
</ins><span class="cx">           'hidden-columns', 'update-welcome-panel', 'menu-get-metabox', 'wp-link-ajax',
</span><span class="cx">          'menu-locations-save', 'menu-quick-search', 'meta-box-order', 'get-permalink',
</span><span class="cx">          'sample-permalink', 'inline-save', 'inline-save-tax', 'find_posts', 'widgets-order',
</span><span class="cx">          'save-widget', 'set-post-thumbnail', 'date_format', 'time_format', 'wp-fullscreen-save-post',
</span><del>-               'wp-remove-post-lock', 'dismiss-wp-pointer', 'nopriv_autosave'
</del><ins>+                'wp-remove-post-lock', 'dismiss-wp-pointer', 'heartbeat', 'nopriv_heartbeat',
</ins><span class="cx">   );
</span><span class="cx"> 
</span><span class="cx">  /**
</span></span></pre></div>
<a id="trunktestsphpunittestsajaxAutosavephp"></a>
<div class="modfile"><h4>Modified: trunk/tests/phpunit/tests/ajax/Autosave.php (26994 => 26995)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/tests/phpunit/tests/ajax/Autosave.php      2014-01-22 02:28:13 UTC (rev 26994)
+++ trunk/tests/phpunit/tests/ajax/Autosave.php 2014-01-22 04:55:37 UTC (rev 26995)
</span><span class="lines">@@ -23,92 +23,158 @@
</span><span class="cx">  protected $_post = null;
</span><span class="cx"> 
</span><span class="cx">  /**
</span><ins>+        * user_id
+        * @var int
+        */
+       protected $user_id = 0;
+
+       /**
</ins><span class="cx">    * Set up the test fixture
</span><span class="cx">   */
</span><span class="cx">  public function setUp() {
</span><span class="cx">          parent::setUp();
</span><ins>+               // Set a user so the $post has 'post_author'
+               $this->user_id = $this->factory->user->create( array( 'role' => 'administrator' ) );
+               wp_set_current_user( $this->user_id );
+
</ins><span class="cx">           $post_id = $this->factory->post->create( array( 'post_status' => 'draft' ) );
</span><span class="cx">          $this->_post = get_post( $post_id );
</span><span class="cx">  }
</span><span class="cx"> 
</span><span class="cx">  /**
</span><ins>+        * Tear down the test fixture.
+        * Reset the current user
+        */
+       public function tearDown() {
+               parent::tearDown();
+               wp_set_current_user( 0 );
+       }
+
+       /**
</ins><span class="cx">    * Test autosaving a post
</span><span class="cx">   * @return void
</span><span class="cx">   */
</span><span class="cx">  public function test_autosave_post() {
</span><ins>+               // The original post_author
+               wp_set_current_user( $this->user_id );
</ins><span class="cx"> 
</span><del>-               // Become an admin
-               $this->_setRole( 'administrator' );
-
</del><span class="cx">           // Set up the $_POST request
</span><span class="cx">          $md5 = md5( uniqid() );
</span><span class="cx">          $_POST = array(
</span><del>-                   'post_id'       => $this->_post->ID,
-                   'autosavenonce' => wp_create_nonce( 'autosave' ),
-                   'post_content'  => $this->_post->post_content . PHP_EOL . $md5,
-                       'post_type'     => 'post',
-                   'autosave'      => 1,
</del><ins>+                        'action' =>  'heartbeat',
+                       '_nonce' => wp_create_nonce( 'heartbeat-nonce' ),
+                       'data' => array(
+                               'wp_autosave' => array(
+                                   'post_id'       => $this->_post->ID,
+                                   '_wpnonce'      => wp_create_nonce( 'update-post_' . $this->_post->ID ),
+                                   'post_content'  => $this->_post->post_content . PHP_EOL . $md5,
+                                       'post_type'     => 'post',
+                               ),
+                       ),
</ins><span class="cx">           );
</span><span class="cx"> 
</span><span class="cx">          // Make the request
</span><span class="cx">          try {
</span><del>-                       $this->_handleAjax( 'autosave' );
</del><ins>+                        $this->_handleAjax( 'heartbeat' );
</ins><span class="cx">           } catch ( WPAjaxDieContinueException $e ) {
</span><span class="cx">                  unset( $e );
</span><span class="cx">          }
</span><span class="cx"> 
</span><del>-               // Get the response
-               $xml = simplexml_load_string( $this->_last_response, 'SimpleXMLElement', LIBXML_NOCDATA );
</del><ins>+                // Get the response, it is in heartbeat's response
+               $response = json_decode( $this->_last_response, true );
</ins><span class="cx"> 
</span><span class="cx">          // Ensure everything is correct
</span><del>-               $this->assertEquals( $this->_post->ID, (int) $xml->response[0]->autosave['id'] );
-               $this->assertEquals( 'autosave_' . $this->_post->ID, (string) $xml->response['action']);
</del><ins>+                $this->assertNotEmpty( $response['wp_autosave'] );
+               $this->assertTrue( $response['wp_autosave']['success'] );
</ins><span class="cx"> 
</span><span class="cx">          // Check that the edit happened
</span><del>-               $post = get_post( $this->_post->ID) ;
</del><ins>+                $post = get_post( $this->_post->ID );
</ins><span class="cx">           $this->assertGreaterThanOrEqual( 0, strpos( $post->post_content, $md5 ) );
</span><span class="cx">  }
</span><del>-
</del><ins>+        
</ins><span class="cx">   /**
</span><del>-        * Test with an invalid nonce
</del><ins>+         * Test autosaving a locked post
</ins><span class="cx">    * @return void
</span><span class="cx">   */
</span><del>-       public function test_with_invalid_nonce( ) {
</del><ins>+        public function test_autosave_locked_post() {
+               // Lock the post to another user
+               $another_user_id = $this->factory->user->create( array( 'role' => 'editor' ) );
+               wp_set_current_user( $another_user_id );
+               wp_set_post_lock( $this->_post->ID );
</ins><span class="cx"> 
</span><del>-               // Become an administrator
-               $this->_setRole( 'administrator' );
</del><ins>+                wp_set_current_user( $this->user_id );
</ins><span class="cx"> 
</span><ins>+               // Ensure post is locked
+               $this->assertEquals( $another_user_id, wp_check_post_lock( $this->_post->ID ) );
+
</ins><span class="cx">           // Set up the $_POST request
</span><ins>+               $md5 = md5( uniqid() );
</ins><span class="cx">           $_POST = array(
</span><del>-                   'post_id'       => $this->_post->ID,
-                   'autosavenonce' => md5( uniqid() ),
-                   'autosave'      => 1
</del><ins>+                        'action' =>  'heartbeat',
+                       '_nonce' => wp_create_nonce( 'heartbeat-nonce' ),
+                       'data' => array(
+                               'wp_autosave' => array(
+                                   'post_id'       => $this->_post->ID,
+                                   '_wpnonce'      => wp_create_nonce( 'update-post_' . $this->_post->ID ),
+                                   'post_content'  => $this->_post->post_content . PHP_EOL . $md5,
+                                       'post_type'     => 'post',
+                               ),
+                       ),
</ins><span class="cx">           );
</span><span class="cx"> 
</span><span class="cx">          // Make the request
</span><del>-               $this->setExpectedException( 'WPAjaxDieStopException', '-1' );
-               $this->_handleAjax( 'autosave' );
</del><ins>+                try {
+                       $this->_handleAjax( 'heartbeat' );
+               } catch ( WPAjaxDieContinueException $e ) {
+                       unset( $e );
+               }
+
+               $response = json_decode( $this->_last_response, true );
+
+               // Ensure everything is correct
+               $this->assertNotEmpty( $response['wp_autosave'] );
+               $this->assertTrue( $response['wp_autosave']['success'] );
+
+               // Check that the original post was NOT edited
+               $post = get_post( $this->_post->ID );
+               $this->assertFalse( strpos( $post->post_content, $md5 ) );
+
+               // Check if the autosave post was created
+               $autosave = wp_get_post_autosave( $this->_post->ID, get_current_user_id() );
+               $this->assertNotEmpty( $autosave );
+               $this->assertGreaterThanOrEqual( 0, strpos( $autosave->post_content, $md5 ) );
</ins><span class="cx">   }
</span><span class="cx"> 
</span><span class="cx">  /**
</span><del>-        * Test with a bad post id
</del><ins>+         * Test with an invalid nonce
</ins><span class="cx">    * @return void
</span><span class="cx">   */
</span><del>-       public function test_with_invalid_post_id( ) {
</del><ins>+        public function test_with_invalid_nonce( ) {
</ins><span class="cx"> 
</span><del>-               // Become an administrator
-               $this->_setRole( 'administrator' );
</del><ins>+                wp_set_current_user( $this->user_id );
</ins><span class="cx"> 
</span><span class="cx">          // Set up the $_POST request
</span><span class="cx">          $_POST = array(
</span><del>-                   'post_id'       => 0,
-                   'autosavenonce' => wp_create_nonce( 'autosave' ),
-                   'autosave'      => 1,
-                       'post_type'     => 'post'
</del><ins>+                        'action' =>  'heartbeat',
+                       '_nonce' => wp_create_nonce( 'heartbeat-nonce' ),
+                       'data' => array(
+                               'wp_autosave' => array(
+                                   'post_id'  => $this->_post->ID,
+                                   '_wpnonce' => substr( md5( uniqid() ), 0, 10 ),
+                               ),
+                       ),
</ins><span class="cx">           );
</span><span class="cx"> 
</span><span class="cx">          // Make the request
</span><del>-               $this->setExpectedException( 'WPAjaxDieStopException', 'You are not allowed to edit this post.' );
-               $this->_handleAjax( 'autosave' );
</del><ins>+                try {
+                       $this->_handleAjax( 'heartbeat' );
+               } catch ( WPAjaxDieContinueException $e ) {
+                       unset( $e );
+               }
+
+               $response = json_decode( $this->_last_response, true );
+
+               $this->assertNotEmpty( $response['wp_autosave'] );
+               $this->assertFalse( $response['wp_autosave']['success'] );
</ins><span class="cx">   }
</span><span class="cx"> }
</span></span></pre>
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