first commit without licensingg
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kbe
473
assets/static/js/comment-reply.js
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473
assets/static/js/comment-reply.js
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/** ----------------------------------------------------------------------------
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* Comment Reply */
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/* jshint ignore:start */
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/**
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* Handles the addition of the comment form.
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*
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* @since 2.7.0
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* @output wp-includes/js/comment-reply.js
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*
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* @namespace addComment
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*
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* @type {Object}
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*/
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window.addComment = ( function ( window ) {
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// Avoid scope lookups on commonly used variables.
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var document = window.document;
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// Settings.
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var config = {
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commentReplyClass : 'comment-reply-link',
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commentReplyTitleId : 'reply-title',
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cancelReplyId : 'cancel-comment-reply-link',
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commentFormId : 'commentform',
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temporaryFormClass : 'wp-temp-form-div',
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parentIdFieldId : 'comment_parent',
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postIdFieldId : 'comment_post_ID',
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commentsWrap : 'comments',
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};
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// Cross browser MutationObserver.
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var MutationObserver = window.MutationObserver || window.WebKitMutationObserver || window.MozMutationObserver;
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// Check browser cuts the mustard.
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var cutsTheMustard = 'querySelector' in document && 'addEventListener' in window;
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/*
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* Check browser supports dataset.
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* !! sets the variable to true if the property exists.
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*/
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var supportsDataset = ! ! document.documentElement.dataset;
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// For holding the cancel element.
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var cancelElement;
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// For holding the comment form element.
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var commentFormElement;
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// The respond element.
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var respondElement;
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// The mutation observer.
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var observer;
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if ( cutsTheMustard && document.readyState !== 'loading' ) {
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ready();
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} else if ( cutsTheMustard ) {
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window.addEventListener( 'DOMContentLoaded', ready, false );
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}
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/**
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* Sets up object variables after the DOM is ready.
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*
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* @since 5.1.1
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*/
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function ready() {
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// Initialize the events.
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init();
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// Set up a MutationObserver to check for comments loaded late.
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observeChanges();
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}
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/**
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* Add events to links classed .comment-reply-link.
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*
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* Searches the context for reply links and adds the JavaScript events
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* required to move the comment form. To allow for lazy loading of
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* comments this method is exposed as window.commentReply.init().
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*
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* @since 5.1.0
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*
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* @memberOf addComment
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*
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* @param {HTMLElement} context The parent DOM element to search for links.
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*/
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function init(context) {
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if (!cutsTheMustard) {
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return;
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}
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const observerOptions = {
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root: null,
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rootMargin: '0px',
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threshold: 0.1,
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};
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let currentPost = null;
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const observer = new IntersectionObserver((entries) => {
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entries.forEach((entry) => {
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if (entry.isIntersecting) {
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const post = entry.target;
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if (currentPost !== post) {
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currentPost = post;
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cancelElement = post.querySelector(`#${config.cancelReplyId}`);
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commentFormElement = post.querySelector(`#${config.commentFormId}`);
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if (cancelElement) {
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cancelElement.addEventListener('click', cancelEvent);
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}
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if (commentFormElement) {
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const submitFormHandler = function (e) {
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if ((e.metaKey || e.ctrlKey) && e.keyCode === 13) {
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commentFormElement.removeEventListener('keydown', submitFormHandler);
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e.preventDefault();
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commentFormElement.submit.click();
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return false;
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}
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};
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commentFormElement.addEventListener('keydown', submitFormHandler);
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}
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updateCancelReplyLink(post);
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const links = replyLinks(post);
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if (links) {
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Array.from(links).forEach((link) => {
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link.addEventListener('click', clickEvent);
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});
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}
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}
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}
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});
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}, observerOptions);
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const posts = document.querySelectorAll('#' + config.commentsWrap );
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posts.forEach((post) => {
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observer.observe(post);
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});
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}
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/**
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* Return all links classed .comment-reply-link.
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*
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* @since 5.1.0
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*
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* @param {HTMLElement} context The parent DOM element to search for links.
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*
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* @return {HTMLCollection|NodeList|Array}
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*/
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function replyLinks( context ) {
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var selectorClass = config.commentReplyClass;
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var allReplyLinks;
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if ( ! context || ! context.childNodes ) {
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context = document;
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}
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if ( document.getElementsByClassName ) {
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allReplyLinks = context.getElementsByClassName( selectorClass );
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} else {
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allReplyLinks = context.querySelectorAll( '.' + selectorClass );
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}
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return allReplyLinks;
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}
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function updateCancelReplyLink( postElement ) {
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const cancelLink = postElement.querySelector(`#${config.cancelReplyId}`);
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const postIdField = postElement.querySelector(`#${config.postIdFieldId}`);
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const postId = postIdField ? postIdField.value : null;
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if (cancelLink && postId) {
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const currentPostUrl = `${window.location.origin}${window.location.pathname}#respond-${postId}`;
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cancelLink.setAttribute('href', currentPostUrl);
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}
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}
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/**
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* Cancel event handler.
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*
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* @since 5.1.0
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*
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* @param {Event} event The calling event.
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*/
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function cancelEvent( event ) {
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var cancelLink = this;
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var commentsWrapElement = event.target.closest( '#' + config.commentsWrap );
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var temporaryElement = commentsWrapElement.querySelector( '.' + config.temporaryFormClass );
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if ( ! temporaryElement || ! respondElement ) {
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// Conditions for cancel link fail.
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return;
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}
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commentsWrapElement.querySelector( '#' + config.parentIdFieldId ).value = 0;
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// Move the respond form back in place of the temporary element.
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var headingText = temporaryElement.textContent;
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temporaryElement.parentNode.replaceChild( respondElement, temporaryElement );
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cancelLink.style.display = 'none';
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var replyHeadingElement = commentsWrapElement.querySelector( '#' + config.commentReplyTitleId );
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var replyHeadingTextNode = replyHeadingElement && replyHeadingElement.firstChild;
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var replyLinkToParent = replyHeadingTextNode && replyHeadingTextNode.nextSibling;
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if ( replyHeadingTextNode && replyHeadingTextNode.nodeType === Node.TEXT_NODE && headingText ) {
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if ( replyLinkToParent && 'A' === replyLinkToParent.nodeName && replyLinkToParent.id !== config.cancelReplyId ) {
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replyLinkToParent.style.display = '';
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}
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replyHeadingTextNode.textContent = headingText;
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}
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event.preventDefault();
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}
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/**
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* Click event handler.
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*
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* @since 5.1.0
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*
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* @param {Event} event The calling event.
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*/
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function clickEvent( event ) {
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var commentsWrapElement = event.target.closest( '#' + config.commentsWrap );
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var replyNode = commentsWrapElement.querySelector( '#' + config.commentReplyTitleId );
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var defaultReplyHeading = replyNode && replyNode.firstChild.textContent;
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var replyLink = this,
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commId = getDataAttribute( replyLink, 'belowelement' ),
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parentId = getDataAttribute( replyLink, 'commentid' ),
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respondId = getDataAttribute( replyLink, 'respondelement' ),
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postId = getDataAttribute( replyLink, 'postid' ),
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replyTo = getDataAttribute( replyLink, 'replyto' ) || defaultReplyHeading,
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follow;
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if ( ! commId || ! parentId || ! respondId || ! postId ) {
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/*
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* Theme or plugin defines own link via custom `wp_list_comments()` callback
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* and calls `moveForm()` either directly or via a custom event hook.
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*/
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return;
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}
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/*
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* Third party comments systems can hook into this function via the global scope,
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* therefore the click event needs to reference the global scope.
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*/
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follow = window.addComment.moveForm( commId, parentId, respondId, postId, replyTo, event );
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if ( false === follow ) {
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event.preventDefault();
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}
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}
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/**
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* Creates a mutation observer to check for newly inserted comments.
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*
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* @since 5.1.0
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*/
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function observeChanges() {
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if ( ! MutationObserver ) {
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return;
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}
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var observerOptions = {
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childList: true,
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subtree: true
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};
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observer = new MutationObserver( handleChanges );
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observer.observe( document.body, observerOptions );
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}
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/**
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* Handles DOM changes, calling init() if any new nodes are added.
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*
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* @since 5.1.0
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*
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* @param {Array} mutationRecords Array of MutationRecord objects.
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*/
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function handleChanges( mutationRecords ) {
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var i = mutationRecords.length;
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while ( i-- ) {
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// Call init() once if any record in this set adds nodes.
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if ( mutationRecords[ i ].addedNodes.length ) {
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init();
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return;
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}
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}
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}
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/**
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* Backward compatible getter of data-* attribute.
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*
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* Uses element.dataset if it exists, otherwise uses getAttribute.
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*
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* @since 5.1.0
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*
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* @param {HTMLElement} Element DOM element with the attribute.
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* @param {string} Attribute the attribute to get.
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*
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* @return {string}
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*/
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function getDataAttribute( element, attribute ) {
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if ( supportsDataset ) {
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return element.dataset[attribute];
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} else {
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return element.getAttribute( 'data-' + attribute );
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}
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}
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/**
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* Get element by ID.
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*
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* Local alias for document.getElementById.
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*
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* @since 5.1.0
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*
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* @param {HTMLElement} The requested element.
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*/
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function getElementById( elementId ) {
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return document.getElementById( elementId );
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}
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/**
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* Moves the reply form from its current position to the reply location.
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*
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* @since 2.7.0
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*
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* @memberOf addComment
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*
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* @param {string} addBelowId HTML ID of element the form follows.
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* @param {string} commentId Database ID of comment being replied to.
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* @param {string} respondId HTML ID of 'respond' element.
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* @param {string} postId Database ID of the post.
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* @param {string} replyTo Form heading content.
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*/
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function moveForm( addBelowId, commentId, respondId, postId, replyTo, event ) {
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// Get elements based on their IDs.
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var commentsWrapElement = event.target.closest( '#' + config.commentsWrap );
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var addBelowElement = commentsWrapElement.querySelector( '#' + addBelowId );
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respondElement = commentsWrapElement.querySelector( '#' + respondId );
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// Get the hidden fields.
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var parentIdField = commentsWrapElement.querySelector( '#' + config.parentIdFieldId );
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var postIdField = commentsWrapElement.querySelector( '#' + config.postIdFieldId );
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var element, cssHidden, style;
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var replyHeading = commentsWrapElement.querySelector( '#' + config.commentReplyTitleId );
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var replyHeadingTextNode = replyHeading && replyHeading.firstChild;
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var replyLinkToParent = replyHeadingTextNode && replyHeadingTextNode.nextSibling;
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if ( ! addBelowElement || ! respondElement || ! parentIdField ) {
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// Missing key elements, fail.
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return;
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}
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if ( 'undefined' === typeof replyTo ) {
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replyTo = replyHeadingTextNode && replyHeadingTextNode.textContent;
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}
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addPlaceHolder( respondElement, event );
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// Set the value of the post.
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if ( postId && postIdField ) {
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postIdField.value = postId;
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}
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parentIdField.value = commentId;
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cancelElement.style.display = '';
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addBelowElement.querySelector( '.comment-body' ).insertBefore( respondElement, null );
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if ( replyHeadingTextNode && replyHeadingTextNode.nodeType === Node.TEXT_NODE ) {
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if ( replyLinkToParent && 'A' === replyLinkToParent.nodeName && replyLinkToParent.id !== config.cancelReplyId ) {
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replyLinkToParent.style.display = 'none';
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}
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replyHeadingTextNode.textContent = replyTo;
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}
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/*
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* This is for backward compatibility with third party commenting systems
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* hooking into the event using older techniques.
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*/
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cancelElement.onclick = function () {
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return false;
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};
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// Focus on the first field in the comment form.
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try {
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for ( var i = 0; i < commentFormElement.elements.length; i++ ) {
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element = commentFormElement.elements[i];
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cssHidden = false;
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// Get elements computed style.
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if ( 'getComputedStyle' in window ) {
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// Modern browsers.
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style = window.getComputedStyle( element );
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} else if ( document.documentElement.currentStyle ) {
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// IE 8.
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style = element.currentStyle;
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}
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/*
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* For display none, do the same thing jQuery does. For visibility,
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* check the element computed style since browsers are already doing
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* the job for us. In fact, the visibility computed style is the actual
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* computed value and already takes into account the element ancestors.
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*/
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if ( ( element.offsetWidth <= 0 && element.offsetHeight <= 0 ) || style.visibility === 'hidden' ) {
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cssHidden = true;
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}
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// Skip form elements that are hidden or disabled.
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if ( 'hidden' === element.type || element.disabled || cssHidden ) {
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continue;
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}
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element.focus();
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// Stop after the first focusable element.
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break;
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}
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} catch (e) {
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}
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/*
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* false is returned for backward compatibility with third party commenting systems
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* hooking into this function.
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*/
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return false;
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}
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/**
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* Add placeholder element.
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*
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* Places a place holder element above the #respond element for
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* the form to be returned to if needs be.
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*
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* @since 2.7.0
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*
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* @param {HTMLelement} respondElement the #respond element holding comment form.
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*/
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function addPlaceHolder( respondElement, event ) {
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var commentsWrapElement = event.target.closest( '#' + config.commentsWrap );
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var temporaryElement = commentsWrapElement.querySelector( '.' + config.temporaryFormClass );
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var replyElement = respondElement.querySelector( '#' + config.commentReplyTitleId );
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var initialHeadingText = replyElement ? replyElement.firstChild.textContent : '';
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if ( temporaryElement ) {
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// The element already exists, no need to recreate.
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return;
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}
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temporaryElement = document.createElement( 'div' );
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temporaryElement.classList.add( config.temporaryFormClass );
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temporaryElement.style.display = 'none';
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temporaryElement.textContent = initialHeadingText;
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respondElement.parentNode.insertBefore( temporaryElement, respondElement );
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}
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return {
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init: init,
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moveForm: moveForm
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};
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})( window );
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/* jshint ignore:end */
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Reference in New Issue
Block a user