590 lines
16 KiB
JavaScript
590 lines
16 KiB
JavaScript
/* global tinymce, wpCookies, autosaveL10n, switchEditors */
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// Back-compat
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window.autosave = function() {
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return true;
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};
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( function( $, window ) {
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function autosave() {
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var initialCompareString,
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lastTriggerSave = 0,
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$document = $(document);
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/**
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* Returns the data saved in both local and remote autosave
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*
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* @return object Object containing the post data
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*/
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function getPostData( type ) {
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var post_name, parent_id, data,
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time = ( new Date() ).getTime(),
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cats = [],
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editor = typeof tinymce !== 'undefined' && tinymce.get('content');
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// Don't run editor.save() more often than every 3 sec.
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// It is resource intensive and might slow down typing in long posts on slow devices.
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if ( editor && ! editor.isHidden() && time - 3000 > lastTriggerSave ) {
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editor.save();
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lastTriggerSave = time;
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}
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data = {
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post_id: $( '#post_ID' ).val() || 0,
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post_type: $( '#post_type' ).val() || '',
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post_author: $( '#post_author' ).val() || '',
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post_title: $( '#title' ).val() || '',
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content: $( '#content' ).val() || '',
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excerpt: $( '#excerpt' ).val() || ''
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};
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if ( type === 'local' ) {
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return data;
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}
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$( 'input[id^="in-category-"]:checked' ).each( function() {
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cats.push( this.value );
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});
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data.catslist = cats.join(',');
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if ( post_name = $( '#post_name' ).val() ) {
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data.post_name = post_name;
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}
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if ( parent_id = $( '#parent_id' ).val() ) {
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data.parent_id = parent_id;
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}
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if ( $( '#comment_status' ).prop( 'checked' ) ) {
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data.comment_status = 'open';
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}
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if ( $( '#ping_status' ).prop( 'checked' ) ) {
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data.ping_status = 'open';
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}
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if ( $( '#auto_draft' ).val() === '1' ) {
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data.auto_draft = '1';
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}
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return data;
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}
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// Concatenate title, content and excerpt. Used to track changes when auto-saving.
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function getCompareString( postData ) {
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if ( typeof postData === 'object' ) {
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return ( postData.post_title || '' ) + '::' + ( postData.content || '' ) + '::' + ( postData.excerpt || '' );
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}
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return ( $('#title').val() || '' ) + '::' + ( $('#content').val() || '' ) + '::' + ( $('#excerpt').val() || '' );
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}
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function disableButtons() {
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$document.trigger('autosave-disable-buttons');
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// Re-enable 5 sec later. Just gives autosave a head start to avoid collisions.
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setTimeout( enableButtons, 5000 );
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}
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function enableButtons() {
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$document.trigger( 'autosave-enable-buttons' );
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}
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// Autosave in localStorage
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function autosaveLocal() {
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var restorePostData, undoPostData, blog_id, post_id, hasStorage, intervalTimer,
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lastCompareString,
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isSuspended = false;
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// Check if the browser supports sessionStorage and it's not disabled
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function checkStorage() {
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var test = Math.random().toString(),
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result = false;
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try {
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window.sessionStorage.setItem( 'wp-test', test );
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result = window.sessionStorage.getItem( 'wp-test' ) === test;
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window.sessionStorage.removeItem( 'wp-test' );
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} catch(e) {}
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hasStorage = result;
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return result;
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}
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/**
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* Initialize the local storage
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*
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* @return mixed False if no sessionStorage in the browser or an Object containing all postData for this blog
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*/
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function getStorage() {
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var stored_obj = false;
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// Separate local storage containers for each blog_id
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if ( hasStorage && blog_id ) {
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stored_obj = sessionStorage.getItem( 'wp-autosave-' + blog_id );
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if ( stored_obj ) {
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stored_obj = JSON.parse( stored_obj );
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} else {
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stored_obj = {};
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}
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}
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return stored_obj;
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}
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/**
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* Set the storage for this blog
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*
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* Confirms that the data was saved successfully.
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*
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* @return bool
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*/
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function setStorage( stored_obj ) {
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var key;
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if ( hasStorage && blog_id ) {
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key = 'wp-autosave-' + blog_id;
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sessionStorage.setItem( key, JSON.stringify( stored_obj ) );
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return sessionStorage.getItem( key ) !== null;
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}
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return false;
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}
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/**
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* Get the saved post data for the current post
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*
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* @return mixed False if no storage or no data or the postData as an Object
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*/
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function getSavedPostData() {
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var stored = getStorage();
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if ( ! stored || ! post_id ) {
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return false;
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}
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return stored[ 'post_' + post_id ] || false;
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}
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/**
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* Set (save or delete) post data in the storage.
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*
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* If stored_data evaluates to 'false' the storage key for the current post will be removed
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*
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* $param stored_data The post data to store or null/false/empty to delete the key
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* @return bool
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*/
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function setData( stored_data ) {
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var stored = getStorage();
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if ( ! stored || ! post_id ) {
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return false;
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}
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if ( stored_data ) {
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stored[ 'post_' + post_id ] = stored_data;
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} else if ( stored.hasOwnProperty( 'post_' + post_id ) ) {
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delete stored[ 'post_' + post_id ];
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} else {
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return false;
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}
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return setStorage( stored );
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}
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function suspend() {
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isSuspended = true;
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}
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function resume() {
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isSuspended = false;
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}
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/**
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* Save post data for the current post
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*
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* Runs on a 15 sec. interval, saves when there are differences in the post title or content.
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* When the optional data is provided, updates the last saved post data.
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*
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* $param data optional Object The post data for saving, minimum 'post_title' and 'content'
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* @return bool
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*/
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function save( data ) {
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var postData, compareString,
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result = false;
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if ( isSuspended || ! hasStorage ) {
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return false;
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}
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if ( data ) {
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postData = getSavedPostData() || {};
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$.extend( postData, data );
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} else {
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postData = getPostData('local');
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}
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compareString = getCompareString( postData );
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if ( typeof lastCompareString === 'undefined' ) {
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lastCompareString = initialCompareString;
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}
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// If the content, title and excerpt did not change since the last save, don't save again
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if ( compareString === lastCompareString ) {
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return false;
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}
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postData.save_time = ( new Date() ).getTime();
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postData.status = $( '#post_status' ).val() || '';
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result = setData( postData );
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if ( result ) {
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lastCompareString = compareString;
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}
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return result;
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}
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// Run on DOM ready
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function run() {
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post_id = $('#post_ID').val() || 0;
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// Check if the local post data is different than the loaded post data.
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if ( $( '#wp-content-wrap' ).hasClass( 'tmce-active' ) ) {
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// If TinyMCE loads first, check the post 1.5 sec. after it is ready.
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// By this time the content has been loaded in the editor and 'saved' to the textarea.
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// This prevents false positives.
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$document.on( 'tinymce-editor-init.autosave', function() {
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window.setTimeout( function() {
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checkPost();
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}, 1500 );
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});
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} else {
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checkPost();
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}
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// Save every 15 sec.
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intervalTimer = window.setInterval( save, 15000 );
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$( 'form#post' ).on( 'submit.autosave-local', function() {
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var editor = typeof tinymce !== 'undefined' && tinymce.get('content'),
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post_id = $('#post_ID').val() || 0;
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if ( editor && ! editor.isHidden() ) {
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// Last onSubmit event in the editor, needs to run after the content has been moved to the textarea.
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editor.on( 'submit', function() {
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save({
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post_title: $( '#title' ).val() || '',
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content: $( '#content' ).val() || '',
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excerpt: $( '#excerpt' ).val() || ''
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});
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});
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} else {
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save({
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post_title: $( '#title' ).val() || '',
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content: $( '#content' ).val() || '',
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excerpt: $( '#excerpt' ).val() || ''
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});
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}
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wpCookies.set( 'wp-saving-post', post_id + '-check', 24 * 60 * 60 );
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});
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}
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// Strip whitespace and compare two strings
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function compare( str1, str2 ) {
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function removeSpaces( string ) {
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return string.toString().replace(/[\x20\t\r\n\f]+/g, '');
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}
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return ( removeSpaces( str1 || '' ) === removeSpaces( str2 || '' ) );
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}
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/**
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* Check if the saved data for the current post (if any) is different than the loaded post data on the screen
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*
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* Shows a standard message letting the user restore the post data if different.
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*
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* @return void
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*/
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function checkPost() {
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var content, post_title, excerpt, $notice,
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postData = getSavedPostData(),
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cookie = wpCookies.get( 'wp-saving-post' );
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if ( cookie === post_id + '-saved' ) {
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wpCookies.remove( 'wp-saving-post' );
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// The post was saved properly, remove old data and bail
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setData( false );
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return;
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}
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if ( ! postData ) {
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return;
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}
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// There is a newer autosave. Don't show two "restore" notices at the same time.
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if ( $( '#has-newer-autosave' ).length ) {
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return;
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}
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content = $( '#content' ).val() || '';
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post_title = $( '#title' ).val() || '';
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excerpt = $( '#excerpt' ).val() || '';
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if ( compare( content, postData.content ) && compare( post_title, postData.post_title ) &&
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compare( excerpt, postData.excerpt ) ) {
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return;
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}
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restorePostData = postData;
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undoPostData = {
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content: content,
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post_title: post_title,
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excerpt: excerpt
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};
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$notice = $( '#local-storage-notice' );
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$('.wrap h2').first().after( $notice.addClass( 'updated' ).show() );
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$notice.on( 'click.autosave-local', function( event ) {
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var $target = $( event.target );
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if ( $target.hasClass( 'restore-backup' ) ) {
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restorePost( restorePostData );
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$target.parent().hide();
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$(this).find( 'p.undo-restore' ).show();
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} else if ( $target.hasClass( 'undo-restore-backup' ) ) {
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restorePost( undoPostData );
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$target.parent().hide();
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$(this).find( 'p.local-restore' ).show();
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}
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event.preventDefault();
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});
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}
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// Restore the current title, content and excerpt from postData.
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function restorePost( postData ) {
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var editor;
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if ( postData ) {
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// Set the last saved data
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lastCompareString = getCompareString( postData );
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if ( $( '#title' ).val() !== postData.post_title ) {
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$( '#title' ).focus().val( postData.post_title || '' );
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}
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$( '#excerpt' ).val( postData.excerpt || '' );
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editor = typeof tinymce !== 'undefined' && tinymce.get('content');
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if ( editor && ! editor.isHidden() && typeof switchEditors !== 'undefined' ) {
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// Make sure there's an undo level in the editor
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editor.undoManager.add();
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editor.setContent( postData.content ? switchEditors.wpautop( postData.content ) : '' );
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} else {
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// Make sure the Text editor is selected
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$( '#content-html' ).click();
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$( '#content' ).val( postData.content );
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}
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return true;
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}
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return false;
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}
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blog_id = typeof window.autosaveL10n !== 'undefined' && window.autosaveL10n.blog_id;
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// Check if the browser supports sessionStorage and it's not disabled,
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// then initialize and run checkPost().
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// Don't run if the post type supports neither 'editor' (textarea#content) nor 'excerpt'.
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if ( checkStorage() && blog_id && ( $('#content').length || $('#excerpt').length ) ) {
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$document.ready( run );
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}
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return {
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hasStorage: hasStorage,
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getSavedPostData: getSavedPostData,
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save: save,
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suspend: suspend,
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resume: resume
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};
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}
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// Autosave on the server
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function autosaveServer() {
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var _blockSave, _blockSaveTimer, previousCompareString, lastCompareString,
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nextRun = 0,
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isSuspended = false;
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// Block saving for the next 10 sec.
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function tempBlockSave() {
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_blockSave = true;
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window.clearTimeout( _blockSaveTimer );
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_blockSaveTimer = window.setTimeout( function() {
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_blockSave = false;
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}, 10000 );
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}
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function suspend() {
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isSuspended = true;
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}
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function resume() {
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isSuspended = false;
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}
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// Runs on heartbeat-response
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function response( data ) {
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_schedule();
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_blockSave = false;
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lastCompareString = previousCompareString;
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previousCompareString = '';
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$document.trigger( 'after-autosave', [data] );
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enableButtons();
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if ( data.success ) {
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// No longer an auto-draft
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$( '#auto_draft' ).val('');
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}
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}
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/**
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* Save immediately
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*
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* Resets the timing and tells heartbeat to connect now
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*
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* @return void
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*/
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function triggerSave() {
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nextRun = 0;
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wp.heartbeat.connectNow();
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}
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/**
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* Checks if the post content in the textarea has changed since page load.
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*
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* This also happens when TinyMCE is active and editor.save() is triggered by
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* wp.autosave.getPostData().
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*
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* @return bool
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*/
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function postChanged() {
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return getCompareString() !== initialCompareString;
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}
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// Runs on 'heartbeat-send'
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function save() {
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var postData, compareString;
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// window.autosave() used for back-compat
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if ( isSuspended || _blockSave || ! window.autosave() ) {
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return false;
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}
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if ( ( new Date() ).getTime() < nextRun ) {
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return false;
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}
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postData = getPostData();
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compareString = getCompareString( postData );
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// First check
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if ( typeof lastCompareString === 'undefined' ) {
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lastCompareString = initialCompareString;
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}
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// No change
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if ( compareString === lastCompareString ) {
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return false;
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}
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previousCompareString = compareString;
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tempBlockSave();
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disableButtons();
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$document.trigger( 'wpcountwords', [ postData.content ] )
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.trigger( 'before-autosave', [ postData ] );
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postData._wpnonce = $( '#_wpnonce' ).val() || '';
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return postData;
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}
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function _schedule() {
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nextRun = ( new Date() ).getTime() + ( autosaveL10n.autosaveInterval * 1000 ) || 60000;
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}
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$document.on( 'heartbeat-send.autosave', function( event, data ) {
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var autosaveData = save();
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if ( autosaveData ) {
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data.wp_autosave = autosaveData;
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}
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}).on( 'heartbeat-tick.autosave', function( event, data ) {
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if ( data.wp_autosave ) {
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response( data.wp_autosave );
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}
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}).on( 'heartbeat-connection-lost.autosave', function( event, error, status ) {
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// When connection is lost, keep user from submitting changes.
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if ( 'timeout' === error || 603 === status ) {
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var $notice = $('#lost-connection-notice');
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if ( ! wp.autosave.local.hasStorage ) {
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$notice.find('.hide-if-no-sessionstorage').hide();
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}
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$notice.show();
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disableButtons();
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}
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}).on( 'heartbeat-connection-restored.autosave', function() {
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$('#lost-connection-notice').hide();
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enableButtons();
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}).ready( function() {
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_schedule();
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});
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return {
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tempBlockSave: tempBlockSave,
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triggerSave: triggerSave,
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postChanged: postChanged,
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suspend: suspend,
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resume: resume
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};
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}
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// Wait for TinyMCE to initialize plus 1 sec. for any external css to finish loading,
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// then 'save' to the textarea before setting initialCompareString.
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// This avoids any insignificant differences between the initial textarea content and the content
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// extracted from the editor.
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$document.on( 'tinymce-editor-init.autosave', function( event, editor ) {
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if ( editor.id === 'content' ) {
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window.setTimeout( function() {
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editor.save();
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initialCompareString = getCompareString();
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}, 1000 );
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}
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}).ready( function() {
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// Set the initial compare string in case TinyMCE is not used or not loaded first
|
|
initialCompareString = getCompareString();
|
|
});
|
|
|
|
return {
|
|
getPostData: getPostData,
|
|
getCompareString: getCompareString,
|
|
disableButtons: disableButtons,
|
|
enableButtons: enableButtons,
|
|
local: autosaveLocal(),
|
|
server: autosaveServer()
|
|
};
|
|
}
|
|
|
|
window.wp = window.wp || {};
|
|
window.wp.autosave = autosave();
|
|
|
|
}( jQuery, window ));
|