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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 ));