Ticket #25272: 25272.2.patch

src/wp-admin/admin-ajax.php

@@ -49 +49 @@
         'oembed-cache', 'image-editor', 'delete-comment', 'delete-tag', 'delete-link',
         'delete-meta', 'delete-post', 'trash-post', 'untrash-post', 'delete-page', 'dim-comment',
         'add-link-category', 'add-tag', 'get-tagcloud', 'get-comments', 'replyto-comment',
-        'edit-comment', 'add-menu-item', 'add-meta', 'add-user', 'autosave', 'closed-postboxes',
+        'edit-comment', 'add-menu-item', 'add-meta', 'add-user', 'closed-postboxes',
         'hidden-columns', 'update-welcome-panel', 'menu-get-metabox', 'wp-link-ajax',
         'menu-locations-save', 'menu-quick-search', 'meta-box-order', 'get-permalink',
         'sample-permalink', 'inline-save', 'inline-save-tax', 'find_posts', 'widgets-order',

src/wp-admin/edit-form-advanced.php

@@ -347 +347 @@
 
 echo $form_extra;
 
-wp_nonce_field( 'autosave', 'autosavenonce', false );
 wp_nonce_field( 'meta-box-order', 'meta-box-order-nonce', false );
 wp_nonce_field( 'closedpostboxes', 'closedpostboxesnonce', false );
 ?>

src/wp-admin/includes/ajax-actions.php

@@ -1042 +1042 @@
         $x->send();
 }
 
-function wp_ajax_autosave() {
-        define( 'DOING_AUTOSAVE', true );
-
-        check_ajax_referer( 'autosave', 'autosavenonce' );
-
-        $_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 ( 'auto-draft' == $post->post_status )
-                $_POST['post_status'] = 'draft';
-
-        if ( 'page' == $post->post_type ) {
-                if ( !current_user_can('edit_page', $post->ID) )
-                        wp_die( __( 'You are not allowed to edit this page.' ) );
-        } else {
-                if ( !current_user_can('edit_post', $post->ID) )
-                        wp_die( __( 'You are not allowed to edit this post.' ) );
-        }
-
-        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();
-}
-
 function wp_ajax_closed_postboxes() {
         check_ajax_referer( 'closedpostboxes', 'closedpostboxesnonce' );
         $closed = isset( $_POST['closed'] ) ? explode( ',', $_POST['closed']) : array();

src/wp-admin/includes/misc.php

@@ -650 +650 @@
                 if ( 2 === wp_verify_nonce( $received['post_nonce'], 'update-post_' . $post_id ) ) {
                         $response['wp-refresh-post-nonces'] = array(
                                 'replace' => array(
-                                        'autosavenonce' => wp_create_nonce('autosave'),
                                         'getpermalinknonce' => wp_create_nonce('getpermalink'),
                                         'samplepermalinknonce' => wp_create_nonce('samplepermalink'),
                                         'closedpostboxesnonce' => wp_create_nonce('closedpostboxes'),
@@ -665 +664 @@
         return $response;
 }
 add_filter( 'heartbeat_received', 'wp_refresh_post_nonces', 10, 3 );
+
+/**
+ * Autosave with heartbeat
+ *
+ * @since 3.7
+ */
+function wp_autosave( $response, $data ) {
+        if ( ! empty( $data['autosave'] ) ) {
+                $saved = autosave( $data['autosave'] );
+
+                if ( is_wp_error( $saved ) ) {
+                        $response['autosave'] = array( 'success' => false, 'message' => $saved->get_error_message() );
+                } elseif ( empty( $saved ) ) {
+                        $response['autosave'] = array( 'success' => false, 'message' => __( 'Error while saving the draft.' ) );
+                } 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['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', 'wp_autosave', 50, 2 );

src/wp-admin/includes/post.php

@@ -79 +79 @@
                 }
         }
 
-        if ( ! empty( $post_data['post_status'] ) )
+        if ( ! empty( $post_data['post_status'] ) ) {
                 $post_data['post_status'] = sanitize_key( $post_data['post_status'] );
 
+                // No longer an auto-draft
+                if ( 'auto-draft' == $post_data['post_status'] )
+                        $post_data['post_status'] = 'draft';
+        }
+
         // What to do based on which button they pressed
         if ( isset($post_data['saveasdraft']) && '' != $post_data['saveasdraft'] )
                 $post_data['post_status'] = 'draft';
@@ -181 +186 @@
         $post_data = _wp_translate_postdata( true, $post_data );
         if ( is_wp_error($post_data) )
                 wp_die( $post_data->get_error_message() );
-        if ( ( empty( $post_data['action'] ) || 'autosave' != $post_data['action'] ) && 'auto-draft' == $post_data['post_status'] ) {
-                $post_data['post_status'] = 'draft';
-        }
 
         if ( isset($post_data['visibility']) ) {
                 switch ( $post_data['visibility'] ) {
@@ -1312 +1314 @@
  * @uses _wp_translate_postdata()
  * @uses _wp_post_revision_fields()
  *
- * @return unknown
+ * @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.
  */
-function wp_create_post_autosave( $post_id ) {
-        $translated = _wp_translate_postdata( true );
-        if ( is_wp_error( $translated ) )
-                return $translated;
+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'];
+        }
 
+        $post_data = _wp_translate_postdata( true, $post_data );
+        if ( is_wp_error( $post_data ) )
+                return $post_data;
+
         $post_author = get_current_user_id();
 
         // Store one autosave per author. If there is already an autosave, overwrite it.
         if ( $old_autosave = wp_get_post_autosave( $post_id, $post_author ) ) {
-                $new_autosave = _wp_post_revision_fields( $_POST, true );
+                $new_autosave = _wp_post_revision_fields( $post_data, true );
                 $new_autosave['ID'] = $old_autosave->ID;
                 $new_autosave['post_author'] = $post_author;
 
-                // If the new autosave is the same content as the post, delete the old autosave.
+                // If the new autosave has the same content as the post, delete the autosave.
                 $post = get_post( $post_id );
                 $autosave_is_different = false;
                 foreach ( array_keys( _wp_post_revision_fields() ) as $field ) {
@@ -1339 +1349 @@
 
                 if ( ! $autosave_is_different ) {
                         wp_delete_post_revision( $old_autosave->ID );
-                        return;
+                        return 0;
                 }
 
                 return wp_update_post( $new_autosave );
@@ -1346 +1356 @@
         }
 
         // _wp_put_post_revision() expects unescaped.
-        $post_data = wp_unslash( $_POST );
+        $post_data = wp_unslash( $post_data );
 
         // Otherwise create the new autosave as a special post revision
         return _wp_put_post_revision( $post_data, true );
@@ -1372 +1382 @@
 function post_preview() {
 
         $post_ID = (int) $_POST['post_ID'];
-        $status = get_post_status( $post_ID );
-        if ( 'auto-draft' == $status )
-                wp_die( __('Preview not available. Please save as a draft first.') );
+        $_POST['ID'] = $post_ID;
 
-        if ( isset($_POST['catslist']) )
-                $_POST['post_category'] = explode(",", $_POST['catslist']);
+        if ( ! $post = get_post( $post_ID ) )
+                wp_die( __('You attempted to preview a non existing item.') );
 
-        if ( isset($_POST['tags_input']) )
-                $_POST['tags_input'] = explode(",", $_POST['tags_input']);
+        if ( ! current_user_can( 'edit_post', $post->ID ) )
+                wp_die( __('You are not allowed to preview this item.') );
 
-        if ( $_POST['post_type'] == 'page' || empty($_POST['post_category']) )
-                unset($_POST['post_category']);
+        $is_autosave = false;
 
-        $_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.') );
+        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();
         } else {
-                if ( ! current_user_can('edit_post', $post_ID) )
-                        wp_die( __('You are not allowed to edit this post.') );
-        }
+                $is_autosave = true;
 
-        $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;
+                if ( 'auto-draft' == $_POST['post_status'] )
+                        $_POST['post_status'] = 'draft';
+
+                $saved_post_id = wp_create_post_autosave( $post->ID );
         }
 
-        if ( is_wp_error($id) )
-                wp_die( $id->get_error_message() );
+        if ( is_wp_error( $saved_post_id ) )
+                wp_die( $saved_post_id->get_error_message() );
 
-        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,
-                );
+        $query_args = array( 'preview' => 'true' );
 
+        if ( $is_autosave && $saved_post_id ) {
+                $query_args['preview_id'] = $post->ID;
+                $query_args['preview_nonce'] = wp_create_nonce( 'post_preview_' . $post->ID );
+
                 if ( isset( $_POST['post_format'] ) )
-                        $args['post_format'] = empty( $_POST['post_format'] ) ? 'standard' : sanitize_key( $_POST['post_format'] );
-
-                $url = add_query_arg( $args, get_permalink($id) );
+                        $query_args['post_format'] = empty( $_POST['post_format'] ) ? 'standard' : sanitize_key( $_POST['post_format'] );
         }
 
+        $url = add_query_arg( $query_args, get_permalink( $post->ID ) );
         return apply_filters( 'preview_post_link', $url );
 }
+
+/**
+ * Save a post submitted with XHR
+ *
+ * Intended for use with heartbeat and autosave.js
+ *
+ * @since 3.7
+ *
+ * @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 either the draft post_id or the autosave revision post_id.
+ */
+function 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 );
+        }
+}

src/wp-admin/js/post.js

@@ -1 @@
-var tagBox, commentsBox, editPermalink, makeSlugeditClickable, WPSetThumbnailHTML, WPSetThumbnailID, WPRemoveThumbnail, wptitlehint;
+var tagBox, commentsBox, WPSetThumbnailHTML, WPSetThumbnailID, WPRemoveThumbnail, wptitlehint;
+// Prevent fatal errors (back-compat)
+makeSlugeditClickable = editPermalink = function(){};
 
 // return an array with any duplicate, whitespace or values removed
 function array_unique_noempty(a) {
@@ -265 +267 @@
                 send['lock'] = lock;
 
         data['wp-refresh-post-lock'] = send;
-});
 
-// 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 ) {
+}).on( 'heartbeat-tick.refresh-lock', function( e, data ) {
+        // Post locks: update the lock string or show the dialog if somebody has taken over editing
         var received, wrap, avatar;
 
         if ( data['wp-refresh-post-lock'] ) {
@@ -279 +280 @@
                         wrap = $('#post-lock-dialog');
 
                         if ( wrap.length && ! wrap.is(':visible') ) {
-                                if ( typeof autosave == 'function' ) {
-                                        $(document).on('autosave-disable-buttons.post-lock', function() {
-                                                wrap.addClass('saving');
-                                        }).on('autosave-enable-buttons.post-lock', function() {
+                                if ( typeof wp != 'undefined' && wp.autosave ) {
+                                        // Save the latest changes and disable
+                                        $(document).one( 'heartbeat-tick', function() {
+                                                wp.autosave.remote.disable();
                                                 wrap.removeClass('saving').addClass('saved');
-                                                window.onbeforeunload = null;
+                                                $(window).off( 'beforeunload.autosave' );
                                         });
 
-                                        // Save the latest changes and disable
-                                        if ( ! autosave() )
-                                                window.onbeforeunload = null;
-
-                                        autosave = function(){};
+                                        wrap.addClass('saving');
+                                        wp.autosave.remote.triggerSave();
                                 }
 
                                 if ( received.lock_error.avatar_src ) {
@@ -306 +304 @@
                         $('#active_post_lock').val( received.new_lock );
                 }
         }
+}).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);
+                                }
+                        }
+                );
+        }
 });
 
 }(jQuery));
@@ -351 +365 @@
 }(jQuery));
 
 jQuery(document).ready( function($) {
-        var stamp, visibility, sticky = '', last = 0, co = $('#content');
+        var stamp, visibility, sticky = '', last = 0, co = $('#content'), $editSlugWrap = $('#edit-slug-box'),
+                postId = $('#post_ID').val() || 0;
 
         postboxes.add_postbox_toggles(pagenow);
 
@@ -680 +695 @@
         } // end submitdiv
 
         // permalink
-        if ( $('#edit-slug-box').length ) {
-                editPermalink = function(post_id) {
-                        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();
+        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();
 
                         $('#view-post-btn').hide();
                         b.html('<a href="#" class="save button button-small">'+postL10n.ok+'</a> <a class="cancel" href="#">'+postL10n.cancel+'</a>');
@@ -689 +706 @@
                         b.children('.save').click(function() {
                                 var new_slug = e.children('input').val();
                                 if ( new_slug == $('#editable-post-name-full').text() ) {
-                                        return $('.cancel', '#edit-slug-buttons').click();
+                                        return $('#edit-slug-buttons .cancel').click();
                                 }
                                 $.post(ajaxurl, {
                                         action: 'sample-permalink',
-                                        post_id: post_id,
+                                        post_id: postId,
                                         new_slug: new_slug,
                                         new_title: $('#title').val(),
                                         samplepermalinknonce: $('#samplepermalinknonce').val()
@@ -707 +724 @@
                                         }
                                         b.html(revert_b);
                                         real_slug.val(new_slug);
-                                        makeSlugeditClickable();
                                         $('#view-post-btn').show();
                                 });
                                 return false;
                         });
 
-                        $('.cancel', '#edit-slug-buttons').click(function() {
+                        $('#edit-slug-buttons .cancel').click(function() {
                                 $('#view-post-btn').show();
                                 e.html(revert_e);
                                 b.html(revert_b);
@@ -743 +759 @@
                         }).focus();
                 }
 
-                makeSlugeditClickable = function() {
-                        $('#editable-post-name').click(function() {
-                                $('#edit-slug-buttons').children('.edit-slug').click();
-                        });
-                }
-                makeSlugeditClickable();
+                $editSlugWrap.on( 'click', function( event ) {
+                        var $target = $( event.target );
+
+                        if ( $target.is('#editable-post-name') || $target.hasClass('edit-slug') ) {
+                                editPermalink();
+                        }
+                });
         }
 
         // word count

src/wp-admin/post.php

@@ -296 +296 @@
         break;
 
 case 'preview':
-        check_admin_referer( 'autosave', 'autosavenonce' );
+        check_admin_referer( 'update-post_' . $post_id );
 
         $url = post_preview();
 

src/wp-includes/js/autosave.js

@@ -1 @@
-var autosave, autosaveLast = '', autosavePeriodical, autosaveDelayPreview = false, notSaved = true, blockSave = false, fullscreen, autosaveLockRelease = true;
+window.wp = window.wp || {};
 
-jQuery(document).ready( function($) {
+( function( $, window ) {
+        var $document = $(document), _disabled, _blockSave, _blockSaveTimeout;
 
-        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();
-        }
+/**
+ * Returns the data saved in both local and remote autosave
+ *
+ * @return mixed Object containing the post data or false
+ */
+wp.autosave = {
+        getPostData: function( type ) {
+                var post_name, parent_id, cats = [], data,
+                        editor = typeof tinymce != 'undefined' && tinymce.get('content');
 
-        autosavePeriodical = $.schedule({time: autosaveL10n.autosaveInterval * 1000, func: function() { autosave(); }, repeat: true, protect: true});
-
-        //Disable autosave after the form has been submitted
-        $("#post").submit(function() {
-                $.cancel(autosavePeriodical);
-                autosaveLockRelease = false;
-        });
-
-        $('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();
-        });
-
-        window.onbeforeunload = function(){
-                var editor = typeof(tinymce) != 'undefined' ? tinymce.activeEditor : false, compareString;
-
                 if ( editor && ! editor.isHidden() ) {
-                        if ( editor.isDirty() )
-                                return autosaveL10n.saveAlert;
-                } else {
-                        if ( fullscreen && fullscreen.settings.visible ) {
-                                compareString = wp.autosave.getCompareString({
-                                        post_title: $('#wp-fullscreen-title').val() || '',
-                                        content: $('#wp_mce_fullscreen').val() || '',
-                                        excerpt: $('#excerpt').val() || ''
-                                });
+                        // Don't run while the tinymce spellcheck is on. It resets all found words.
+                        if ( editor.plugins.spellchecker && editor.plugins.spellchecker.active ) {
+                                return false;
                         } else {
-                                compareString = wp.autosave.getCompareString();
+                                tinymce.triggerSave();
                         }
-
-                        if ( compareString != autosaveLast )
-                                return autosaveL10n.saveAlert;
                 }
-        };
 
-        $(window).unload( function(e) {
-                if ( ! autosaveLockRelease )
-                        return;
+                data = {
+                        post_id: $('#post_ID').val() || 0,
+                        post_type: $('#post_type').val() || '',
+                        post_author: $('#post_author').val() || '',
+                        excerpt: $('#excerpt').val() || ''
+                };
 
-                // 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;
-
-                $.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()
-                        }
-                });
-        } );
-
-        // preview
-        $('#post-preview').click(function(){
-                if ( $('#auto_draft').val() == '1' && notSaved ) {
-                        autosaveDelayPreview = true;
-                        autosave();
-                        return false;
+                if ( typeof fullscreen != 'undefined' && fullscreen.settings.visible ) {
+                        data['post_title'] = $('#wp-fullscreen-title').val() || '';
+                        data['content'] = $('#wp_mce_fullscreen').val() || '';
+                } else {
+                        data['post_title'] = $('#title').val() || '';
+                        data['content'] = $('#content').val() || '';
                 }
-                doPreview();
-                return false;
-        });
 
-        doPreview = function() {
-                $('input#wp-preview').val('dopreview');
-                $('form#post').attr('target', 'wp-preview').submit().attr('target', '');
+                if ( type == 'local' )
+                        return data;
 
-                /*
-                 * 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();
-                        });
-                }
-
-                $('input#wp-preview').val('');
-        }
-
-        // This code is meant to allow tabbing from Title to Post content.
-        $('#title').on('keydown.editor-focus', function(e) {
-                var ed;
-
-                if ( e.which != 9 )
-                        return;
-
-                if ( !e.ctrlKey && !e.altKey && !e.shiftKey ) {
-                        if ( typeof(tinymce) != 'undefined' )
-                                ed = tinymce.get('content');
-
-                        if ( ed && !ed.isHidden() ) {
-                                $(this).one('keyup', function(e){
-                                        $('#content_tbl td.mceToolbar > a').focus();
-                                });
-                        } else {
-                                $('#content').focus();
-                        }
-
-                        e.preventDefault();
-                }
-        });
-
-        // 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();
+                $('input[id^="in-category-"]:checked').each( function() {
+                        cats.push( this.value );
                 });
-        }
+                data['catslist'] = cats.join(',');
 
-        // When connection is lost, keep user from submitting changes.
-        $(document).on('heartbeat-connection-lost.autosave', function( e, error ) {
-                if ( 'timeout' === error ) {
-                        var notice = $('#lost-connection-notice');
-                        if ( ! wp.autosave.local.hasStorage ) {
-                                notice.find('.hide-if-no-sessionstorage').hide();
-                        }
-                        notice.show();
-                        autosave_disable_buttons();
-                }
-        }).on('heartbeat-connection-restored.autosave', function() {
-                $('#lost-connection-notice').hide();
-                autosave_enable_buttons();
-        });
-});
+                if ( post_name = $('#post_name').val() )
+                        data['post_name'] = post_name;
 
-function autosave_parse_response( response ) {
-        var res = wpAjax.parseAjaxResponse(response, 'autosave'), post_id, sup;
+                if ( parent_id = $('#parent_id').val() )
+                        data['parent_id'] = parent_id;
 
-        if ( res && res.responses && res.responses.length ) {
-                if ( res.responses[0].supplemental ) {
-                        sup = res.responses[0].supplemental;
+                if ( $('#comment_status').prop('checked') )
+                        data['comment_status'] = 'open';
 
-                        jQuery.each( sup, function( selector, value ) {
-                                if ( selector.match(/^replace-/) )
-                                        jQuery( '#' + selector.replace('replace-', '') ).val( value );
-                        });
-                }
+                if ( $('#ping_status').prop('checked') )
+                        data['ping_status'] = 'open';
 
-                // 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 ( $('#auto_draft').val() == '1' )
+                        data['auto_draft'] = '1';
 
-                        if ( res.responses[0].data ) // update autosave message
-                                jQuery('.autosave-message').text( res.responses[0].data );
-                }
-        }
+                return data;
+        },
 
-        return res;
-}
-
-// 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
-}
-
-// called when autosaving new post
-function autosave_saved_new(response) {
-        blockSave = false;
-        var res = autosave_parse_response(response), post_id;
-
-        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 );
-
-                if ( post_id ) {
-                        notSaved = false;
-                        jQuery('#auto_draft').val('0'); // No longer an auto-draft
+        // Concatenate title, content and excerpt. Used to track changes when auto-saving.
+        getCompareString: function( post_data ) {
+                if ( typeof post_data === 'object' ) {
+                        return ( post_data.post_title || '' ) + '::' + ( post_data.content || '' ) + '::' + ( post_data.excerpt || '' );
                 }
 
-                autosave_enable_buttons();
+                return ( $('#title').val() || '' ) + '::' + ( $('#content').val() || '' ) + '::' + ( $('#excerpt').val() || '' );
+        },
 
-                if ( autosaveDelayPreview ) {
-                        autosaveDelayPreview = false;
-                        doPreview();
-                }
-        } else {
-                autosave_enable_buttons(); // re-enable disabled form buttons
-        }
-}
+        enableButtons: function() {
+                $document.trigger('autosave-enable-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');
-                                                });
-                                        }
-                                        makeSlugeditClickable();
-                                }
-                        }
-                );
-        }
-}
-
-function autosave_loading() {
-        jQuery('.autosave-message').html(autosaveL10n.savingText);
-}
-
-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');
+                if ( ! wp.heartbeat || ! wp.heartbeat.hasConnectionError() ) {
+                        var parent = $('#submitpost');
+                        parent.find(':button, :submit, a.submitdelete, #post-preview').prop('disabled', false).removeClass('button-disabled');
                         parent.find('.spinner').hide();
-                }, 500);
-        }
-}
+                }
+        },
 
-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 );
-}
+        disableButtons: function() {
+                $document.trigger('autosave-disable-buttons');
 
-function delayed_autosave() {
-        setTimeout(function(){
-                if ( blockSave )
-                        return;
-                autosave();
-        }, 200);
-}
+                var parent = $('#submitpost');
+                parent.find(':button, :submit, a.submitdelete, #post-preview').prop('disabled', true).addClass('button-disabled');
+                parent.find('#save-action .spinner').show();
 
-autosave = function() {
-        var post_data = wp.autosave.getPostData(),
-                compareString,
-                successCallback;
-
-        blockSave = true;
-
-        // post_data.content cannot be retrieved at the moment
-        if ( ! post_data.autosave )
-                return false;
-
-        // No autosave while thickbox is open (media buttons)
-        if ( jQuery("#TB_window").css('display') == 'block' )
-                return false;
-
-        compareString = wp.autosave.getCompareString( post_data );
-
-        // Nothing to save or no change.
-        if ( compareString == autosaveLast )
-                return false;
-
-        autosaveLast = compareString;
-        jQuery(document).triggerHandler('wpcountwords', [ post_data["content"] ]);
-
-        // Disable buttons until we know the save completed.
-        autosave_disable_buttons();
-
-        if ( post_data["auto_draft"] == '1' ) {
-                successCallback = autosave_saved_new; // new post
-        } else {
-                successCallback = autosave_saved; // pre-existing post
+                // Re-enable 5 sec later. Just gives autosave a head start to avoid collisions.
+                setTimeout( wp.autosave.enableButtons, 5000 );
         }
+};
 
-        jQuery.ajax({
-                data: post_data,
-                beforeSend: autosave_loading,
-                type: "POST",
-                url: ajaxurl,
-                success: successCallback
-        });
-
-        return true;
-}
-
 // Autosave in localStorage
 // set as simple object/mixin for now
-window.wp = window.wp || {};
-wp.autosave = wp.autosave || {};
-
-(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() || ''
-                };
-
-        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 {
-                        if ( 'mce_fullscreen' == ed.id )
-                                tinymce.get('content').setContent(ed.getContent({format : 'raw'}), {format : 'raw'});
-
-                        tinymce.triggerSave();
-                }
-        }
-
-        if ( typeof fullscreen != 'undefined' && fullscreen.settings.visible ) {
-                data['post_title'] = $('#wp-fullscreen-title').val() || '';
-                data['content'] = $('#wp_mce_fullscreen').val() || '';
-        } else {
-                data['post_title'] = $('#title').val() || '';
-                data['content'] = $('#content').val() || '';
-        }
-
-        /*
-        // We haven't been saving tags with autosave since 2.8... Start again?
-        $('.the-tags').each( function() {
-                data[this.name] = this.value;
-        });
-        */
-
-        $('input[id^="in-category-"]:checked').each( function() {
-                cats.push(this.value);
-        });
-        data['catslist'] = cats.join(',');
-
-        if ( post_name = $('#post_name').val() )
-                data['post_name'] = post_name;
-
-        if ( parent_id = $('#parent_id').val() )
-                data['parent_id'] = parent_id;
-
-        if ( $('#comment_status').prop('checked') )
-                data['comment_status'] = 'open';
-
-        if ( $('#ping_status').prop('checked') )
-                data['ping_status'] = 'open';
-
-        if ( $('#auto_draft').val() == '1' )
-                data['auto_draft'] = '1';
-
-        return data;
-};
-
-// 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 || '' );
-        }
-
-        return ( $('#title').val() || '' ) + '::' + ( $('#content').val() || '' ) + '::' + ( $('#excerpt').val() || '' );
-};
-
 wp.autosave.local = {
-
         lastSavedData: '',
         blog_id: 0,
         hasStorage: false,
@@ -502 +204 @@
         save: function( data ) {
                 var result = false, post_data, compareString;
 
-                if ( ! data ) {
-                        post_data = wp.autosave.getPostData();
-                } else {
+                if ( data ) {
                         post_data = this.getData() || {};
                         $.extend( post_data, data );
-                        post_data.autosave = true;
+                } else {
+                        post_data = wp.autosave.getPostData('local');
+                        // Cannot get the post data at the moment
+                        if ( ! post_data )
+                                return false;
                 }
 
-                // Cannot get the post data at the moment
-                if ( ! post_data.autosave )
-                        return false;
-
                 compareString = wp.autosave.getCompareString( post_data );
 
                 // If the content, title and excerpt did not change since the last save, don't save again
@@ -697 +397 @@
         }
 };
 
+// Autosave on the server
+wp.autosave.remote = {
+        releaseLock: true,
+        autosaveLast: '',
+        nextTime: 0,
+
+        init: function() {
+                var self = this, $submitpost = $('#submitpost');
+
+                $document.on( 'heartbeat-send.autosave', function( event, data ) {
+                        var autosaveData = self.getData();
+
+                        if ( autosaveData ) {
+                                data.autosave = autosaveData;
+                        }
+                }).on( 'heartbeat-tick.autosave', function( event, data ) {
+                        if ( data.autosave ) {
+                                self.response( data.autosave );
+                        }
+                }).on('heartbeat-connection-lost.autosave', function( event, error ) {
+                        // When connection is lost, keep user from submitting changes.
+                        if ( 'timeout' === error ) {
+                                var notice = $('#lost-connection-notice');
+                                if ( ! wp.autosave.local.hasStorage ) {
+                                        notice.find('.hide-if-no-sessionstorage').hide();
+                                }
+                                notice.show();
+                                wp.autosave.disableButtons();
+                        }
+                }).on('heartbeat-connection-restored.autosave', function() {
+                        $('#lost-connection-notice').hide();
+                        wp.autosave.enableButtons();
+                });
+
+                $(window).on( 'beforeunload.autosave', function() {
+                        var editor = typeof(tinymce) != 'undefined' && tinymce.activeEditor, compareString;
+
+                        if ( editor && ! editor.isHidden() ) {
+                                if ( editor.isDirty() )
+                                        return autosaveL10n.saveAlert;
+                        } else {
+                                if ( fullscreen && fullscreen.settings.visible ) {
+                                        compareString = wp.autosave.getCompareString({
+                                                post_title: $('#wp-fullscreen-title').val() || '',
+                                                content: $('#wp_mce_fullscreen').val() || '',
+                                                excerpt: $('#excerpt').val() || ''
+                                        });
+                                } else {
+                                        compareString = wp.autosave.getCompareString();
+                                }
+
+                                if ( compareString != self.autosaveLast )
+                                        return autosaveL10n.saveAlert;
+                        }
+                }).on( 'unload.autosave', function( event ) {
+                        if ( ! self.releaseLock )
+                                return;
+
+                        // unload fires (twice) 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()
+                                }
+                        });
+                });
+
+                $document.ready( function() {
+                        self._schedule();
+
+                        if ( $('#wp-content-wrap').hasClass('tmce-active') && typeof switchEditors != 'undefined' ) {
+                                self.autosaveLast = wp.autosave.getCompareString({
+                                        post_title : $('#title').val() || '',
+                                        content : switchEditors.pre_wpautop( $('#content').val() ) || '',
+                                        excerpt : $('#excerpt').val() || ''
+                                });
+                        } else {
+                                self.autosaveLast = wp.autosave.getCompareString();
+                        }
+
+                        // The form is being submitted by the user
+                        $submitpost.find( 'input[type="submit"], a.submitdelete' ).on( 'click.autosave', function( event ) {
+                                var $this = $(this);
+
+                                if ( $this.prop('disabled') ) {
+                                        event.preventDefault(); // For the "Move to Trash" link
+                                        return;
+                                }
+
+                                self.blockSave();
+                                self.releaseLock = false;
+                                $(window).off( 'beforeunload.autosave' );
+
+                                $submitpost.find('a.submitdelete, #post-preview').addClass('button-disabled');
+
+                                if ( $this.attr('id') == 'publish' )
+                                        $submitpost.find('#major-publishing-actions .spinner').show();
+                                else
+                                        $submitpost.find('#minor-publishing .spinner').show();
+                        });
+
+                        $('#post-preview').on( 'click.post-preview', function( event ) {
+                                if ( ! $(this).prop('disabled') ) {
+                                        self.doPreview();
+                                }
+                                event.preventDefault();
+                        });
+
+                        // 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');
+
+                                        if ( editor && ! editor.isHidden() ) {
+                                                $(this).one( 'keyup', function() {
+                                                        $('#content_tbl td.mceToolbar > a').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;
+
+                                        self.triggerSave();
+                                });
+                        }
+                });
+        },
+
+        // Block saving for the next 15 sec.
+        blockSave: function() {
+                _blockSave = true;
+                window.clearTimeout( _blockSaveTimeout );
+                _blockSaveTimeout = window.setTimeout( function() {
+                        _blockSave = false;
+                }, 15000 );
+        },
+
+        // Submit the form saving a draft or an autosave, and show a preview in a new tab
+        doPreview: function() {
+                this.blockSave();
+                $('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();
+                        });
+                }
+
+                $('input#wp-preview').val('');
+        },
+
+        // Runs on heartbeat-response
+        response: function( data ) {
+                this._schedule();
+                _blockSave = false;
+                this.autosaveLast = this.lastCompareString;
+                this.lastCompareString = '';
+
+                $(document).trigger( 'after-autosave', [data] );
+                $('#auto_draft').val(''); // No longer an auto-draft
+                $('.autosave-message').text( data.message );
+
+                wp.autosave.enableButtons(); // re-enable disabled form buttons
+        },
+
+        disable: function() {
+                _disabled = true;
+        },
+
+        _schedule: function() {
+                this.nextTime = ( new Date() ).getTime() + ( autosaveL10n.autosaveInterval * 1000 ) || 60000;
+        },
+
+        // Set heartbeat to connect fast (once) and save on the next tick.
+        triggerSave: function() {
+                this.nextTime = 0;
+                wp.heartbeat.interval( 'fast', 1 );
+        },
+
+        // Runs on 'heartbeat-send'
+        getData: function() {
+                var compareString, postData;
+
+                if ( _disabled || _blockSave )
+                        return false;
+
+                if ( ( new Date() ).getTime() < this.nextTime )
+                        return false;
+
+                postData = wp.autosave.getPostData();
+
+                // post_data.content cannot be retrieved at the moment
+                if ( ! postData )
+                        return false;
+
+                compareString = wp.autosave.getCompareString( postData );
+
+                // Nothing to save or no change.
+                if ( compareString == this.autosaveLast )
+                        return false;
+
+                this.blockSave();
+                wp.autosave.disableButtons();
+                this.lastCompareString = compareString;
+
+                $(document).trigger( 'wpcountwords', [ postData['content'] ] );
+                $(document).trigger( 'before-autosave', [ postData ] );
+
+                $('.autosave-message').text( autosaveL10n.savingText );
+                postData._wpnonce = $('#_wpnonce').val() || '';
+
+                return postData;
+        }
+};
+
 wp.autosave.local.init();
+wp.autosave.remote.init();
 
-}(jQuery));
+}( jQuery, window ));

src/wp-includes/js/heartbeat.js

@@ -183 +183 @@
                                 timeout: 30000, // throw an error if not completed after 30 sec.
                                 data: send,
                                 dataType: 'json'
+                        }).always( function() {
+                                connecting = false;
+                                next();
                         }).done( function( response, textStatus, jqXHR ) {
                                 var new_interval;
 
@@ -209 +212 @@
                                 // do this last, can trigger the next XHR if connection time > 5 sec. and new_interval == 'fast'
                                 if ( new_interval )
                                         self.interval.call( self, new_interval );
-                        }).always( function() {
-                                connecting = false;
-                                next();
                         }).fail( function( jqXHR, textStatus, error ) {
                                 errorstate( textStatus || 'unknown' );
                                 self.error( jqXHR, textStatus, error );

src/wp-includes/revision.php

@@ -215 +215 @@
  *
  * @param int|object|array $post Post ID, post object OR post array.
  * @param bool $autosave Optional. Is the revision an autosave?
- * @return mixed Null or 0 if error, new revision ID if success.
+ * @return mixed WP_Error or 0 if error, new revision ID if success.
  */
 function _wp_put_post_revision( $post = null, $autosave = false ) {
         if ( is_object($post) )
@@ -223 +223 @@
         elseif ( !is_array($post) )
                 $post = get_post($post, ARRAY_A);
 
-        if ( !$post || empty($post['ID']) )
-                return;
+        if ( ! $post || empty($post['ID']) )
+                return new WP_Error( 'invalid_post', __( 'Invalid post ID.' ) );
 
         if ( isset($post['post_type']) && 'revision' == $post['post_type'] )
                 return new WP_Error( 'post_type', __( 'Cannot create a revision of a revision' ) );