first commit without licensingg

assets/static/js/comment-reply.js

@@ -0,0 +1,473 @@
+/** ----------------------------------------------------------------------------
+ * Comment Reply */
+
+/* jshint ignore:start */
+
+/**
+ * Handles the addition of the comment form.
+ *
+ * @since 2.7.0
+ * @output wp-includes/js/comment-reply.js
+ *
+ * @namespace addComment
+ *
+ * @type {Object}
+ */
+window.addComment = ( function ( window ) {
+	// Avoid scope lookups on commonly used variables.
+	var document = window.document;
+
+	// Settings.
+	var config = {
+		commentReplyClass   : 'comment-reply-link',
+		commentReplyTitleId : 'reply-title',
+		cancelReplyId       : 'cancel-comment-reply-link',
+		commentFormId       : 'commentform',
+		temporaryFormClass  : 'wp-temp-form-div',
+		parentIdFieldId     : 'comment_parent',
+		postIdFieldId       : 'comment_post_ID',
+		commentsWrap        : 'comments',
+	};
+
+	// Cross browser MutationObserver.
+	var MutationObserver = window.MutationObserver || window.WebKitMutationObserver || window.MozMutationObserver;
+
+	// Check browser cuts the mustard.
+	var cutsTheMustard = 'querySelector' in document && 'addEventListener' in window;
+
+	/*
+	 * Check browser supports dataset.
+	 * !! sets the variable to true if the property exists.
+	 */
+	var supportsDataset = ! ! document.documentElement.dataset;
+
+	// For holding the cancel element.
+	var cancelElement;
+
+	// For holding the comment form element.
+	var commentFormElement;
+
+	// The respond element.
+	var respondElement;
+
+	// The mutation observer.
+	var observer;
+
+	if ( cutsTheMustard && document.readyState !== 'loading' ) {
+		ready();
+	} else if ( cutsTheMustard ) {
+		window.addEventListener( 'DOMContentLoaded', ready, false );
+	}
+
+	/**
+	 * Sets up object variables after the DOM is ready.
+	 *
+	 * @since 5.1.1
+	 */
+	function ready() {
+		// Initialize the events.
+		init();
+
+		// Set up a MutationObserver to check for comments loaded late.
+		observeChanges();
+	}
+
+	/**
+	 * Add events to links classed .comment-reply-link.
+	 *
+	 * Searches the context for reply links and adds the JavaScript events
+	 * required to move the comment form. To allow for lazy loading of
+	 * comments this method is exposed as window.commentReply.init().
+	 *
+	 * @since 5.1.0
+	 *
+	 * @memberOf addComment
+	 *
+	 * @param {HTMLElement} context The parent DOM element to search for links.
+	 */
+    function init(context) {
+        if (!cutsTheMustard) {
+            return;
+        }
+
+        const observerOptions = {
+            root: null,
+            rootMargin: '0px',
+            threshold: 0.1,
+        };
+
+        let currentPost = null;
+
+        const observer = new IntersectionObserver((entries) => {
+            entries.forEach((entry) => {
+                if (entry.isIntersecting) {
+                    const post = entry.target;
+
+                    if (currentPost !== post) {
+                        currentPost = post;
+
+                        cancelElement = post.querySelector(`#${config.cancelReplyId}`);
+                        commentFormElement = post.querySelector(`#${config.commentFormId}`);
+
+                        if (cancelElement) {
+                            cancelElement.addEventListener('click', cancelEvent);
+                        }
+
+                        if (commentFormElement) {
+                            const submitFormHandler = function (e) {
+                                if ((e.metaKey || e.ctrlKey) && e.keyCode === 13) {
+                                    commentFormElement.removeEventListener('keydown', submitFormHandler);
+                                    e.preventDefault();
+                                    commentFormElement.submit.click();
+                                    return false;
+                                }
+                            };
+
+                            commentFormElement.addEventListener('keydown', submitFormHandler);
+                        }
+
+                        updateCancelReplyLink(post);
+
+                        const links = replyLinks(post);
+                        if (links) {
+                            Array.from(links).forEach((link) => {
+                                link.addEventListener('click', clickEvent);
+                            });
+                        }
+                    }
+                }
+            });
+        }, observerOptions);
+
+        const posts = document.querySelectorAll('#' + config.commentsWrap );
+        posts.forEach((post) => {
+            observer.observe(post);
+        });
+    }
+	/**
+	 * Return all links classed .comment-reply-link.
+	 *
+	 * @since 5.1.0
+	 *
+	 * @param {HTMLElement} context The parent DOM element to search for links.
+	 *
+	 * @return {HTMLCollection|NodeList|Array}
+	 */
+	function replyLinks( context ) {
+		var selectorClass = config.commentReplyClass;
+		var allReplyLinks;
+
+		if ( ! context || ! context.childNodes ) {
+			context = document;
+		}
+
+		if ( document.getElementsByClassName ) {
+			allReplyLinks = context.getElementsByClassName( selectorClass );
+		} else {
+			allReplyLinks = context.querySelectorAll( '.' + selectorClass );
+		}
+
+		return allReplyLinks;
+	}
+
+    function updateCancelReplyLink( postElement ) {
+        const cancelLink  = postElement.querySelector(`#${config.cancelReplyId}`);
+        const postIdField = postElement.querySelector(`#${config.postIdFieldId}`);
+        const postId      = postIdField ? postIdField.value : null;
+
+        if (cancelLink && postId) {
+            const currentPostUrl = `${window.location.origin}${window.location.pathname}#respond-${postId}`;
+            cancelLink.setAttribute('href', currentPostUrl);
+        }
+    }
+
+	/**
+	 * Cancel event handler.
+	 *
+	 * @since 5.1.0
+	 *
+	 * @param {Event} event The calling event.
+	 */
+	function cancelEvent( event ) {
+		var cancelLink          = this;
+        var commentsWrapElement = event.target.closest( '#' + config.commentsWrap );
+		var temporaryElement    = commentsWrapElement.querySelector( '.' + config.temporaryFormClass );
+
+		if ( ! temporaryElement || ! respondElement ) {
+			// Conditions for cancel link fail.
+			return;
+		}
+
+		commentsWrapElement.querySelector( '#' + config.parentIdFieldId ).value = 0;
+
+		// Move the respond form back in place of the temporary element.
+		var headingText = temporaryElement.textContent;
+		temporaryElement.parentNode.replaceChild( respondElement, temporaryElement );
+		cancelLink.style.display = 'none';
+
+		var replyHeadingElement  = commentsWrapElement.querySelector( '#' + config.commentReplyTitleId );
+		var replyHeadingTextNode = replyHeadingElement && replyHeadingElement.firstChild;
+		var replyLinkToParent    = replyHeadingTextNode && replyHeadingTextNode.nextSibling;
+
+		if ( replyHeadingTextNode && replyHeadingTextNode.nodeType === Node.TEXT_NODE && headingText ) {
+			if ( replyLinkToParent && 'A' === replyLinkToParent.nodeName && replyLinkToParent.id !== config.cancelReplyId ) {
+				replyLinkToParent.style.display = '';
+			}
+
+			replyHeadingTextNode.textContent = headingText;
+		}
+
+		event.preventDefault();
+	}
+
+	/**
+	 * Click event handler.
+	 *
+	 * @since 5.1.0
+	 *
+	 * @param {Event} event The calling event.
+	 */
+	function clickEvent( event ) {
+        var commentsWrapElement = event.target.closest( '#' + config.commentsWrap );
+		var replyNode           = commentsWrapElement.querySelector( '#' + config.commentReplyTitleId );
+		var defaultReplyHeading = replyNode && replyNode.firstChild.textContent;
+		var replyLink           = this,
+			commId              = getDataAttribute( replyLink, 'belowelement' ),
+			parentId            = getDataAttribute( replyLink, 'commentid' ),
+			respondId           = getDataAttribute( replyLink, 'respondelement' ),
+			postId              = getDataAttribute( replyLink, 'postid' ),
+			replyTo             = getDataAttribute( replyLink, 'replyto' ) || defaultReplyHeading,
+			follow;
+
+		if ( ! commId || ! parentId || ! respondId || ! postId ) {
+			/*
+			 * Theme or plugin defines own link via custom `wp_list_comments()` callback
+			 * and calls `moveForm()` either directly or via a custom event hook.
+			 */
+			return;
+		}
+
+		/*
+		 * Third party comments systems can hook into this function via the global scope,
+		 * therefore the click event needs to reference the global scope.
+		 */
+		follow = window.addComment.moveForm( commId, parentId, respondId, postId, replyTo, event );
+		if ( false === follow ) {
+			event.preventDefault();
+		}
+	}
+
+	/**
+	 * Creates a mutation observer to check for newly inserted comments.
+	 *
+	 * @since 5.1.0
+	 */
+	function observeChanges() {
+		if ( ! MutationObserver ) {
+			return;
+		}
+
+		var observerOptions = {
+			childList: true,
+			subtree: true
+		};
+
+		observer = new MutationObserver( handleChanges );
+		observer.observe( document.body, observerOptions );
+	}
+
+	/**
+	 * Handles DOM changes, calling init() if any new nodes are added.
+	 *
+	 * @since 5.1.0
+	 *
+	 * @param {Array} mutationRecords Array of MutationRecord objects.
+	 */
+	function handleChanges( mutationRecords ) {
+		var i = mutationRecords.length;
+
+		while ( i-- ) {
+			// Call init() once if any record in this set adds nodes.
+			if ( mutationRecords[ i ].addedNodes.length ) {
+				init();
+				return;
+			}
+		}
+	}
+
+	/**
+	 * Backward compatible getter of data-* attribute.
+	 *
+	 * Uses element.dataset if it exists, otherwise uses getAttribute.
+	 *
+	 * @since 5.1.0
+	 *
+	 * @param {HTMLElement} Element DOM element with the attribute.
+	 * @param {string}      Attribute the attribute to get.
+	 *
+	 * @return {string}
+	 */
+	function getDataAttribute( element, attribute ) {
+		if ( supportsDataset ) {
+			return element.dataset[attribute];
+		} else {
+			return element.getAttribute( 'data-' + attribute );
+		}
+	}
+
+	/**
+	 * Get element by ID.
+	 *
+	 * Local alias for document.getElementById.
+	 *
+	 * @since 5.1.0
+	 *
+	 * @param {HTMLElement} The requested element.
+	 */
+	function getElementById( elementId ) {
+		return document.getElementById( elementId );
+	}
+
+	/**
+	 * Moves the reply form from its current position to the reply location.
+	 *
+	 * @since 2.7.0
+	 *
+	 * @memberOf addComment
+	 *
+	 * @param {string} addBelowId HTML ID of element the form follows.
+	 * @param {string} commentId  Database ID of comment being replied to.
+	 * @param {string} respondId  HTML ID of 'respond' element.
+	 * @param {string} postId     Database ID of the post.
+	 * @param {string} replyTo    Form heading content.
+	 */
+	function moveForm( addBelowId, commentId, respondId, postId, replyTo, event ) {
+		// Get elements based on their IDs.
+		var commentsWrapElement = event.target.closest( '#' + config.commentsWrap );
+
+		var addBelowElement = commentsWrapElement.querySelector( '#' + addBelowId );
+		respondElement      = commentsWrapElement.querySelector( '#' + respondId );
+		// Get the hidden fields.
+		var parentIdField = commentsWrapElement.querySelector( '#' + config.parentIdFieldId );
+		var postIdField   = commentsWrapElement.querySelector( '#' + config.postIdFieldId );
+		var element, cssHidden, style;
+
+		var replyHeading         = commentsWrapElement.querySelector( '#' + config.commentReplyTitleId );
+		var replyHeadingTextNode = replyHeading && replyHeading.firstChild;
+		var replyLinkToParent    = replyHeadingTextNode && replyHeadingTextNode.nextSibling;
+
+		if ( ! addBelowElement || ! respondElement || ! parentIdField ) {
+			// Missing key elements, fail.
+			return;
+		}
+
+		if ( 'undefined' === typeof replyTo ) {
+			replyTo = replyHeadingTextNode && replyHeadingTextNode.textContent;
+		}
+
+		addPlaceHolder( respondElement, event );
+
+		// Set the value of the post.
+		if ( postId && postIdField ) {
+			postIdField.value = postId;
+		}
+
+		parentIdField.value         = commentId;
+		cancelElement.style.display = '';
+		addBelowElement.querySelector( '.comment-body' ).insertBefore( respondElement, null );
+
+		if ( replyHeadingTextNode && replyHeadingTextNode.nodeType === Node.TEXT_NODE ) {
+			if ( replyLinkToParent && 'A' === replyLinkToParent.nodeName && replyLinkToParent.id !== config.cancelReplyId ) {
+				replyLinkToParent.style.display = 'none';
+			}
+
+			replyHeadingTextNode.textContent = replyTo;
+		}
+
+		/*
+		 * This is for backward compatibility with third party commenting systems
+		 * hooking into the event using older techniques.
+		 */
+		cancelElement.onclick = function () {
+			return false;
+		};
+
+		// Focus on the first field in the comment form.
+		try {
+			for ( var i = 0; i < commentFormElement.elements.length; i++ ) {
+				element   = commentFormElement.elements[i];
+				cssHidden = false;
+
+				// Get elements computed style.
+				if ( 'getComputedStyle' in window ) {
+					// Modern browsers.
+					style = window.getComputedStyle( element );
+				} else if ( document.documentElement.currentStyle ) {
+					// IE 8.
+					style = element.currentStyle;
+				}
+
+				/*
+				 * For display none, do the same thing jQuery does. For visibility,
+				 * check the element computed style since browsers are already doing
+				 * the job for us. In fact, the visibility computed style is the actual
+				 * computed value and already takes into account the element ancestors.
+				 */
+				if ( ( element.offsetWidth <= 0 && element.offsetHeight <= 0 ) || style.visibility === 'hidden' ) {
+					cssHidden = true;
+				}
+
+				// Skip form elements that are hidden or disabled.
+				if ( 'hidden' === element.type || element.disabled || cssHidden ) {
+					continue;
+				}
+
+				element.focus();
+				// Stop after the first focusable element.
+				break;
+			}
+		} catch (e) {
+
+		}
+
+		/*
+		 * false is returned for backward compatibility with third party commenting systems
+		 * hooking into this function.
+		 */
+		return false;
+	}
+
+	/**
+	 * Add placeholder element.
+	 *
+	 * Places a place holder element above the #respond element for
+	 * the form to be returned to if needs be.
+	 *
+	 * @since 2.7.0
+	 *
+	 * @param {HTMLelement} respondElement the #respond element holding comment form.
+	 */
+	function addPlaceHolder( respondElement, event ) {
+        var commentsWrapElement = event.target.closest( '#' + config.commentsWrap );
+		var temporaryElement   = commentsWrapElement.querySelector( '.' + config.temporaryFormClass );
+		var replyElement       = respondElement.querySelector( '#' + config.commentReplyTitleId );
+		var initialHeadingText = replyElement ? replyElement.firstChild.textContent : '';
+		if ( temporaryElement ) {
+			// The element already exists, no need to recreate.
+			return;
+		}
+
+		temporaryElement = document.createElement( 'div' );
+		temporaryElement.classList.add( config.temporaryFormClass );
+		temporaryElement.style.display = 'none';
+		temporaryElement.textContent   = initialHeadingText;
+		respondElement.parentNode.insertBefore( temporaryElement, respondElement );
+	}
+
+	return {
+		init: init,
+		moveForm: moveForm
+	};
+})( window );
+
+/* jshint ignore:end */