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/** * @output wp-includes/js/autosave.js */ /* global tinymce, wpCookies, autosaveL10n, switchEditors */ // Back-compat. window.autosave = function() { return true; }; /** * Adds autosave to the window object on dom ready. * * @since 3.9.0 * * @param {jQuery} $ jQuery object. * @param {window} The window object. * */ ( function( $, window ) { /** * Auto saves the post. * * @since 3.9.0 * * @return {Object} * {{ * getPostData: getPostData, * getCompareString: getCompareString, * disableButtons: disableButtons, * enableButtons: enableButtons, * local: ({hasStorage, getSavedPostData, save, suspend, resume}|*), * server: ({tempBlockSave, triggerSave, postChanged, suspend, resume}|*) * }} * The object with all functions for autosave. */ function autosave() { var initialCompareString, initialCompareData = {}, lastTriggerSave = 0, $document = $( document ); /** * Sets the initial compare data. * * @since 5.6.1 */ function setInitialCompare() { initialCompareData = { post_title: $( '#title' ).val() || '', content: $( '#content' ).val() || '', excerpt: $( '#excerpt' ).val() || '' }; initialCompareString = getCompareString( initialCompareData ); } /** * Returns the data saved in both local and remote autosave. * * @since 3.9.0 * * @param {string} type The type of autosave either local or remote. * * @return {Object} Object containing the post data. */ function getPostData( type ) { var post_name, parent_id, data, time = ( new Date() ).getTime(), cats = [], editor = getEditor(); // Don't run editor.save() more often than every 3 seconds. // It is resource intensive and might slow down typing in long posts on slow devices. if ( editor && editor.isDirty() && ! editor.isHidden() && time - 3000 > lastTriggerSave ) { editor.save(); lastTriggerSave = time; } data = { post_id: $( '#post_ID' ).val() || 0, post_type: $( '#post_type' ).val() || '', post_author: $( '#post_author' ).val() || '', post_title: $( '#title' ).val() || '', content: $( '#content' ).val() || '', excerpt: $( '#excerpt' ).val() || '' }; if ( type === 'local' ) { return data; } $( '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; } /** * Concatenates the title, content and excerpt. This is used to track changes * when auto-saving. * * @since 3.9.0 * * @param {Object} postData The object containing the post data. * * @return {string} A concatenated string with title, content and excerpt. */ function getCompareString( postData ) { if ( typeof postData === 'object' ) { return ( postData.post_title || '' ) + '::' + ( postData.content || '' ) + '::' + ( postData.excerpt || '' ); } return ( $('#title').val() || '' ) + '::' + ( $('#content').val() || '' ) + '::' + ( $('#excerpt').val() || '' ); } /** * Disables save buttons. * * @since 3.9.0 * * @return {void} */ function disableButtons() { $document.trigger('autosave-disable-buttons'); // Re-enable 5 sec later. Just gives autosave a head start to avoid collisions. setTimeout( enableButtons, 5000 ); } /** * Enables save buttons. * * @since 3.9.0 * * @return {void} */ function enableButtons() { $document.trigger( 'autosave-enable-buttons' ); } /** * Gets the content editor. * * @since 4.6.0 * * @return {boolean|*} Returns either false if the editor is undefined, * or the instance of the content editor. */ function getEditor() { return typeof tinymce !== 'undefined' && tinymce.get('content'); } /** * Autosave in localStorage. * * @since 3.9.0 * * @return { * { * hasStorage: *, * getSavedPostData: getSavedPostData, * save: save, * suspend: suspend, * resume: resume * } * } * The object with all functions for local storage autosave. */ function autosaveLocal() { var blog_id, post_id, hasStorage, intervalTimer, lastCompareString, isSuspended = false; /** * Checks if the browser supports sessionStorage and it's not disabled. * * @since 3.9.0 * * @return {boolean} True if the sessionStorage is supported and enabled. */ function checkStorage() { var test = Math.random().toString(), result = false; try { window.sessionStorage.setItem( 'wp-test', test ); result = window.sessionStorage.getItem( 'wp-test' ) === test; window.sessionStorage.removeItem( 'wp-test' ); } catch(e) {} hasStorage = result; return result; } /** * Initializes the local storage. * * @since 3.9.0 * * @return {boolean|Object} False if no sessionStorage in the browser or an Object * containing all postData for this blog. */ function getStorage() { var stored_obj = false; // Separate local storage containers for each blog_id. if ( hasStorage && blog_id ) { stored_obj = sessionStorage.getItem( 'wp-autosave-' + blog_id ); if ( stored_obj ) { stored_obj = JSON.parse( stored_obj ); } else { stored_obj = {}; } } return stored_obj; } /** * Sets the storage for this blog. Confirms that the data was saved * successfully. * * @since 3.9.0 * * @return {boolean} True if the data was saved successfully, false if it wasn't saved. */ function setStorage( stored_obj ) { var key; if ( hasStorage && blog_id ) { key = 'wp-autosave-' + blog_id; sessionStorage.setItem( key, JSON.stringify( stored_obj ) ); return sessionStorage.getItem( key ) !== null; } return false; } /** * Gets the saved post data for the current post. * * @since 3.9.0 * * @return {boolean|Object} False if no storage or no data or the postData as an Object. */ function getSavedPostData() { var stored = getStorage(); if ( ! stored || ! post_id ) { return false; } return stored[ 'post_' + post_id ] || false; } /** * Sets (save or delete) post data in the storage. * * If stored_data evaluates to 'false' the storage key for the current post will be removed. * * @since 3.9.0 * * @param {Object|boolean|null} stored_data The post data to store or null/false/empty to delete the key. * * @return {boolean} True if data is stored, false if data was removed. */ function setData( stored_data ) { var stored = getStorage(); if ( ! stored || ! post_id ) { return false; } if ( stored_data ) { stored[ 'post_' + post_id ] = stored_data; } else if ( stored.hasOwnProperty( 'post_' + post_id ) ) { delete stored[ 'post_' + post_id ]; } else { return false; } return setStorage( stored ); } /** * Sets isSuspended to true. * * @since 3.9.0 * * @return {void} */ function suspend() { isSuspended = true; } /** * Sets isSuspended to false. * * @since 3.9.0 * * @return {void} */ function resume() { isSuspended = false; } /** * Saves post data for the current post. * * Runs on a 15 seconds interval, saves when there are differences in the post title or content. * When the optional data is provided, updates the last saved post data. * * @since 3.9.0 * * @param {Object} data The post data for saving, minimum 'post_title' and 'content'. * * @return {boolean} Returns true when data has been saved, otherwise it returns false. */ function save( data ) { var postData, compareString, result = false; if ( isSuspended || ! hasStorage ) { return false; } if ( data ) { postData = getSavedPostData() || {}; $.extend( postData, data ); } else { postData = getPostData('local'); } compareString = getCompareString( postData ); if ( typeof lastCompareString === 'undefined' ) { lastCompareString = initialCompareString; } // If the content, title and excerpt did not change since the last save, don't save again. if ( compareString === lastCompareString ) { return false; } postData.save_time = ( new Date() ).getTime(); postData.status = $( '#post_status' ).val() || ''; result = setData( postData ); if ( result ) { lastCompareString = compareString; } return result; } /** * Initializes the auto save function. * * Checks whether the editor is active or not to use the editor events * to autosave, or uses the values from the elements to autosave. * * Runs on DOM ready. * * @since 3.9.0 * * @return {void} */ function run() { post_id = $('#post_ID').val() || 0; // Check if the local post data is different than the loaded post data. if ( $( '#wp-content-wrap' ).hasClass( 'tmce-active' ) ) { /* * If TinyMCE loads first, check the post 1.5 seconds after it is ready. * By this time the content has been loaded in the editor and 'saved' to the textarea. * This prevents false positives. */ $document.on( 'tinymce-editor-init.autosave', function() { window.setTimeout( function() { checkPost(); }, 1500 ); }); } else { checkPost(); } // Save every 15 seconds. intervalTimer = window.setInterval( save, 15000 ); $( 'form#post' ).on( 'submit.autosave-local', function() { var editor = getEditor(), post_id = $('#post_ID').val() || 0; if ( editor && ! editor.isHidden() ) { // Last onSubmit event in the editor, needs to run after the content has been moved to the textarea. editor.on( 'submit', function() { save({ post_title: $( '#title' ).val() || '', content: $( '#content' ).val() || '', excerpt: $( '#excerpt' ).val() || '' }); }); } else { save({ post_title: $( '#title' ).val() || '', content: $( '#content' ).val() || '', excerpt: $( '#excerpt' ).val() || '' }); } var secure = ( 'https:' === window.location.protocol ); wpCookies.set( 'wp-saving-post', post_id + '-check', 24 * 60 * 60, false, false, secure ); }); } /** * Compares 2 strings. Removes whitespaces in the strings before comparing them. * * @since 3.9.0 * * @param {string} str1 The first string. * @param {string} str2 The second string. * @return {boolean} True if the strings are the same. */ function compare( str1, str2 ) { function removeSpaces( string ) { return string.toString().replace(/[\x20\t\r\n\f]+/g, ''); } return ( removeSpaces( str1 || '' ) === removeSpaces( str2 || '' ) ); } /** * Checks if the saved data for the current post (if any) is different than the * loaded post data on the screen. * * Shows a standard message letting the user restore the post data if different. * * @since 3.9.0 * * @return {void} */ function checkPost() { var content, post_title, excerpt, $notice, postData = getSavedPostData(), cookie = wpCookies.get( 'wp-saving-post' ), $newerAutosaveNotice = $( '#has-newer-autosave' ).parent( '.notice' ), $headerEnd = $( '.wp-header-end' ); if ( cookie === post_id + '-saved' ) { wpCookies.remove( 'wp-saving-post' ); // The post was saved properly, remove old data and bail. setData( false ); return; } if ( ! postData ) { return; } content = $( '#content' ).val() || ''; post_title = $( '#title' ).val() || ''; excerpt = $( '#excerpt' ).val() || ''; if ( compare( content, postData.content ) && compare( post_title, postData.post_title ) && compare( excerpt, postData.excerpt ) ) { return; } /* * If '.wp-header-end' is found, append the notices after it otherwise * after the first h1 or h2 heading found within the main content. */ if ( ! $headerEnd.length ) { $headerEnd = $( '.wrap h1, .wrap h2' ).first(); } $notice = $( '#local-storage-notice' ) .insertAfter( $headerEnd ) .addClass( 'notice-warning' ); if ( $newerAutosaveNotice.length ) { // If there is a "server" autosave notice, hide it. // The data in the session storage is either the same or newer. $newerAutosaveNotice.slideUp( 150, function() { $notice.slideDown( 150 ); }); } else { $notice.slideDown( 200 ); } $notice.find( '.restore-backup' ).on( 'click.autosave-local', function() { restorePost( postData ); $notice.fadeTo( 250, 0, function() { $notice.slideUp( 150 ); }); }); } /** * Restores the current title, content and excerpt from postData. * * @since 3.9.0 * * @param {Object} postData The object containing all post data. * * @return {boolean} True if the post is restored. */ function restorePost( postData ) { var editor; if ( postData ) { // Set the last saved data. lastCompareString = getCompareString( postData ); if ( $( '#title' ).val() !== postData.post_title ) { $( '#title' ).trigger( 'focus' ).val( postData.post_title || '' ); } $( '#excerpt' ).val( postData.excerpt || '' ); editor = getEditor(); if ( editor && ! editor.isHidden() && typeof switchEditors !== 'undefined' ) { if ( editor.settings.wpautop && postData.content ) { postData.content = switchEditors.wpautop( postData.content ); } // Make sure there's an undo level in the editor. editor.undoManager.transact( function() { editor.setContent( postData.content || '' ); editor.nodeChanged(); }); } else { // Make sure the Text editor is selected. $( '#content-html' ).trigger( 'click' ); $( '#content' ).trigger( 'focus' ); // Using document.execCommand() will let the user undo. document.execCommand( 'selectAll' ); document.execCommand( 'insertText', false, postData.content || '' ); } return true; } return false; } blog_id = typeof window.autosaveL10n !== 'undefined' && window.autosaveL10n.blog_id; /* * Check if the browser supports sessionStorage and it's not disabled, * then initialize and run checkPost(). * Don't run if the post type supports neither 'editor' (textarea#content) nor 'excerpt'. */ if ( checkStorage() && blog_id && ( $('#content').length || $('#excerpt').length ) ) { $( run ); } return { hasStorage: hasStorage, getSavedPostData: getSavedPostData, save: save, suspend: suspend, resume: resume }; } /** * Auto saves the post on the server. * * @since 3.9.0 * * @return {Object} { * { * tempBlockSave: tempBlockSave, * triggerSave: triggerSave, * postChanged: postChanged, * suspend: suspend, * resume: resume * } * } The object all functions for autosave. */ function autosaveServer() { var _blockSave, _blockSaveTimer, previousCompareString, lastCompareString, nextRun = 0, isSuspended = false; /** * Blocks saving for the next 10 seconds. * * @since 3.9.0 * * @return {void} */ function tempBlockSave() { _blockSave = true; window.clearTimeout( _blockSaveTimer ); _blockSaveTimer = window.setTimeout( function() { _blockSave = false; }, 10000 ); } /** * Sets isSuspended to true. * * @since 3.9.0 * * @return {void} */ function suspend() { isSuspended = true; } /** * Sets isSuspended to false. * * @since 3.9.0 * * @return {void} */ function resume() { isSuspended = false; } /** * Triggers the autosave with the post data. * * @since 3.9.0 * * @param {Object} data The post data. * * @return {void} */ function response( data ) { _schedule(); _blockSave = false; lastCompareString = previousCompareString; previousCompareString = ''; $document.trigger( 'after-autosave', [data] ); enableButtons(); if ( data.success ) { // No longer an auto-draft. $( '#auto_draft' ).val(''); } } /** * Saves immediately. * * Resets the timing and tells heartbeat to connect now. * * @since 3.9.0 * * @return {void} */ function triggerSave() { nextRun = 0; wp.heartbeat.connectNow(); } /** * Checks if the post content in the textarea has changed since page load. * * This also happens when TinyMCE is active and editor.save() is triggered by * wp.autosave.getPostData(). * * @since 3.9.0 * * @return {boolean} True if the post has been changed. */ function postChanged() { var changed = false; // If there are TinyMCE instances, loop through them. if ( window.tinymce ) { window.tinymce.each( [ 'content', 'excerpt' ], function( field ) { var editor = window.tinymce.get( field ); if ( ! editor || editor.isHidden() ) { if ( ( $( '#' + field ).val() || '' ) !== initialCompareData[ field ] ) { changed = true; // Break. return false; } } else if ( editor.isDirty() ) { changed = true; return false; } } ); if ( ( $( '#title' ).val() || '' ) !== initialCompareData.post_title ) { changed = true; } return changed; } return getCompareString() !== initialCompareString; } /** * Checks if the post can be saved or not. * * If the post hasn't changed or it cannot be updated, * because the autosave is blocked or suspended, the function returns false. * * @since 3.9.0 * * @return {Object} Returns the post data. */ function save() { var postData, compareString; // window.autosave() used for back-compat. if ( isSuspended || _blockSave || ! window.autosave() ) { return false; } if ( ( new Date() ).getTime() < nextRun ) { return false; } postData = getPostData(); compareString = getCompareString( postData ); // First check. if ( typeof lastCompareString === 'undefined' ) { lastCompareString = initialCompareString; } // No change. if ( compareString === lastCompareString ) { return false; } previousCompareString = compareString; tempBlockSave(); disableButtons(); $document.trigger( 'wpcountwords', [ postData.content ] ) .trigger( 'before-autosave', [ postData ] ); postData._wpnonce = $( '#_wpnonce' ).val() || ''; return postData; } /** * Sets the next run, based on the autosave interval. * * @private * * @since 3.9.0 * * @return {void} */ function _schedule() { nextRun = ( new Date() ).getTime() + ( autosaveL10n.autosaveInterval * 1000 ) || 60000; } /** * Sets the autosaveData on the autosave heartbeat. * * @since 3.9.0 * * @return {void} */ $( function() { _schedule(); }).on( 'heartbeat-send.autosave', function( event, data ) { var autosaveData = save(); if ( autosaveData ) { data.wp_autosave = autosaveData; } /** * Triggers the autosave of the post with the autosave data on the autosave * heartbeat. * * @since 3.9.0 * * @return {void} */ }).on( 'heartbeat-tick.autosave', function( event, data ) { if ( data.wp_autosave ) { response( data.wp_autosave ); } /** * Disables buttons and throws a notice when the connection is lost. * * @since 3.9.0 * * @return {void} */ }).on( 'heartbeat-connection-lost.autosave', function( event, error, status ) { // When connection is lost, keep user from submitting changes. if ( 'timeout' === error || 603 === status ) { var $notice = $('#lost-connection-notice'); if ( ! wp.autosave.local.hasStorage ) { $notice.find('.hide-if-no-sessionstorage').hide(); } $notice.show(); disableButtons(); } /** * Enables buttons when the connection is restored. * * @since 3.9.0 * * @return {void} */ }).on( 'heartbeat-connection-restored.autosave', function() { $('#lost-connection-notice').hide(); enableButtons(); }); return { tempBlockSave: tempBlockSave, triggerSave: triggerSave, postChanged: postChanged, suspend: suspend, resume: resume }; } /** * Sets the autosave time out. * * Wait for TinyMCE to initialize plus 1 second. for any external css to finish loading, * then save to the textarea before setting initialCompareString. * This avoids any insignificant differences between the initial textarea content and the content * extracted from the editor. * * @since 3.9.0 * * @return {void} */ $( function() { // Set the initial compare string in case TinyMCE is not used or not loaded first. setInitialCompare(); }).on( 'tinymce-editor-init.autosave', function( event, editor ) { // Reset the initialCompare data after the TinyMCE instances have been initialized. if ( 'content' === editor.id || 'excerpt' === editor.id ) { window.setTimeout( function() { editor.save(); setInitialCompare(); }, 1000 ); } }); return { getPostData: getPostData, getCompareString: getCompareString, disableButtons: disableButtons, enableButtons: enableButtons, local: autosaveLocal(), server: autosaveServer() }; } /** @namespace wp */ window.wp = window.wp || {}; window.wp.autosave = autosave(); }( jQuery, window ));
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