https://www.alveoland.com.ph/wp/wp-includes/js/comment-reply.js?ver=6.4.3

1/**
2 * Handles the addition of the comment form.
3 *
4 * @since 2.7.0
5 * @output wp-includes/js/comment-reply.js
6 *
7 * @namespace addComment
8 *
9 * @type {Object}
10 */
11window.addComment = ( function( window ) {
12	// Avoid scope lookups on commonly used variables.
13	var document = window.document;
14
15	// Settings.
16	var config = {
17		commentReplyClass   : 'comment-reply-link',
18		commentReplyTitleId : 'reply-title',
19		cancelReplyId       : 'cancel-comment-reply-link',
20		commentFormId       : 'commentform',
21		temporaryFormId     : 'wp-temp-form-div',
22		parentIdFieldId     : 'comment_parent',
23		postIdFieldId       : 'comment_post_ID'
24	};
25
26	// Cross browser MutationObserver.
27	var MutationObserver = window.MutationObserver || window.WebKitMutationObserver || window.MozMutationObserver;
28
29	// Check browser cuts the mustard.
30	var cutsTheMustard = 'querySelector' in document && 'addEventListener' in window;
31
32	/*
33	 * Check browser supports dataset.
34	 * !! sets the variable to true if the property exists.
35	 */
36	var supportsDataset = !! document.documentElement.dataset;
37
38	// For holding the cancel element.
39	var cancelElement;
40
41	// For holding the comment form element.
42	var commentFormElement;
43
44	// The respond element.
45	var respondElement;
46
47	// The mutation observer.
48	var observer;
49
50	if ( cutsTheMustard && document.readyState !== 'loading' ) {
51		ready();
52	} else if ( cutsTheMustard ) {
53		window.addEventListener( 'DOMContentLoaded', ready, false );
54	}
55
56	/**
57	 * Sets up object variables after the DOM is ready.
58	 *
59	 * @since 5.1.1
60	 */
61	function ready() {
62		// Initialize the events.
63		init();
64

65		// Set up a MutationObserver to check for comments loaded late.
66		observeChanges();
67	}
68
69	/**
70	 * Add events to links classed .comment-reply-link.
71	 *
72	 * Searches the context for reply links and adds the JavaScript events
73	 * required to move the comment form. To allow for lazy loading of
74	 * comments this method is exposed as window.commentReply.init().
75	 *
76	 * @since 5.1.0
77	 *
78	 * @memberOf addComment
79	 *
80	 * @param {HTMLElement} context The parent DOM element to search for links.
81	 */
82	function init( context ) {
83		if ( ! cutsTheMustard ) {
84			return;
85		}
86
87		// Get required elements.
88		cancelElement = getElementById( config.cancelReplyId );
89		commentFormElement = getElementById( config.commentFormId );
90
91		// No cancel element, no replies.
92		if ( ! cancelElement ) {
93			return;
94		}
95
96		cancelElement.addEventListener( 'touchstart', cancelEvent );
97		cancelElement.addEventListener( 'click',      cancelEvent );
98
99		// Submit the comment form when the user types [Ctrl] or [Cmd] + [Enter].
100		var submitFormHandler = function( e ) {
101			if ( ( e.metaKey || e.ctrlKey ) && e.keyCode === 13 ) {
102				commentFormElement.removeEventListener( 'keydown', submitFormHandler );
103				e.preventDefault();
104				// The submit button ID is 'submit' so we can't call commentFormElement.submit(). Click it instead.
105				commentFormElement.submit.click();
106				return false;
107			}
108		};
109
110		if ( commentFormElement ) {
111			commentFormElement.addEventListener( 'keydown', submitFormHandler );
112		}
113
114		var links = replyLinks( context );
115		var element;
116
117		for ( var i = 0, l = links.length; i < l; i++ ) {
118			element = links[i];
119
120			element.addEventListener( 'touchstart', clickEvent );
121			element.addEventListener( 'click',      clickEvent );
122		}
123	}
124
125	/**
126	 * Return all links classed .comment-reply-link.
127	 *
128	 * @since 5.1.0
129	 *
130	 * @param {HTMLElement} context The parent DOM element to search for links.
131	 *
132	 * @return {HTMLCollection|NodeList|Array}
133	 */
134	function replyLinks( context ) {
135		var selectorClass = config.commentReplyClass;
136		var allReplyLinks;
137
138		// childNodes is a handy check to ensure the context is a HTMLElement.
139		if ( ! context || ! context.childNodes ) {
140			context = document;
141		}
142
143		if ( document.getElementsByClassName ) {
144			// Fastest.
145			allReplyLinks = context.getElementsByClassName( selectorClass );
146		}
147		else {
148			// Fast.
149			allReplyLinks = context.querySelectorAll( '.' + selectorClass );
150		}
151
152		return allReplyLinks;
153	}
154
155	/**
156	 * Cancel event handler.
157	 *
158	 * @since 5.1.0
159	 *
160	 * @param {Event} event The calling event.
161	 */
162	function cancelEvent( event ) {
163		var cancelLink = this;
164		var temporaryFormId  = config.temporaryFormId;
165		var temporaryElement = getElementById( temporaryFormId );
166
167		if ( ! temporaryElement || ! respondElement ) {
168			// Conditions for cancel link fail.
169			return;
170		}
171
172		getElementById( config.parentIdFieldId ).value = '0';
173
174		// Move the respond form back in place of the temporary element.
175		var headingText = temporaryElement.textContent;
176		temporaryElement.parentNode.replaceChild( respondElement, temporaryElement );
177		cancelLink.style.display = 'none';
178
179		var replyHeadingElement  = getElementById( config.commentReplyTitleId );
180		var replyHeadingTextNode = replyHeadingElement && replyHeadingElement.firstChild;
181		var replyLinkToParent    = replyHeadingTextNode && replyHeadingTextNode.nextSibling;
182
183		if ( replyHeadingTextNode && replyHeadingTextNode.nodeType === Node.TEXT_NODE && headingText ) {
184			if ( replyLinkToParent && 'A' === replyLinkToParent.nodeName && replyLinkToParent.id !== config.cancelReplyId ) {
185				replyLinkToParent.style.display = '';
186			}
187
188			replyHeadingTextNode.textContent = headingText;
189		}
190
191		event.preventDefault();
192	}
193
194	/**
195	 * Click event handler.
196	 *
197	 * @since 5.1.0
198	 *
199	 * @param {Event} event The calling event.
200	 */
201	function clickEvent( event ) {
202		var replyNode = getElementById( config.commentReplyTitleId );
203		var defaultReplyHeading = replyNode && replyNode.firstChild.textContent;
204		var replyLink = this,
205			commId    = getDataAttribute( replyLink, 'belowelement' ),
206			parentId  = getDataAttribute( replyLink, 'commentid' ),
207			respondId = getDataAttribute( replyLink, 'respondelement' ),
208			postId    = getDataAttribute( replyLink, 'postid' ),
209			replyTo   = getDataAttribute( replyLink, 'replyto' ) || defaultReplyHeading,
210			follow;
211
212		if ( ! commId || ! parentId || ! respondId || ! postId ) {
213			/*
214			 * Theme or plugin defines own link via custom `wp_list_comments()` callback

215			 * and calls `moveForm()` either directly or via a custom event hook.
216			 */
217			return;
218		}
219
220		/*
221		 * Third party comments systems can hook into this function via the global scope,
222		 * therefore the click event needs to reference the global scope.
223		 */
224		follow = window.addComment.moveForm( commId, parentId, respondId, postId, replyTo );
225		if ( false === follow ) {
226			event.preventDefault();
227		}
228	}
229
230	/**
231	 * Creates a mutation observer to check for newly inserted comments.
232	 *
233	 * @since 5.1.0
234	 */
235	function observeChanges() {
236		if ( ! MutationObserver ) {
237			return;
238		}
239
240		var observerOptions = {
241			childList: true,
242			subtree: true
243		};
244
245		observer = new MutationObserver( handleChanges );
246		observer.observe( document.body, observerOptions );
247	}
248
249	/**
250	 * Handles DOM changes, calling init() if any new nodes are added.
251	 *
252	 * @since 5.1.0
253	 *
254	 * @param {Array} mutationRecords Array of MutationRecord objects.
255	 */
256	function handleChanges( mutationRecords ) {
257		var i = mutationRecords.length;
258
259		while ( i-- ) {
260			// Call init() once if any record in this set adds nodes.
261			if ( mutationRecords[ i ].addedNodes.length ) {
262				init();
263				return;
264			}
265		}
266	}
267
268	/**
269	 * Backward compatible getter of data-* attribute.
270	 *
271	 * Uses element.dataset if it exists, otherwise uses getAttribute.
272	 *
273	 * @since 5.1.0
274	 *
275	 * @param {HTMLElement} Element DOM element with the attribute.
276	 * @param {string}      Attribute the attribute to get.
277	 *
278	 * @return {string}
279	 */
280	function getDataAttribute( element, attribute ) {
281		if ( supportsDataset ) {
282			return element.dataset[attribute];
283		}
284		else {
285			return element.getAttribute( 'data-' + attribute );
286		}
287	}
288
289	/**
290	 * Get element by ID.
291	 *
292	 * Local alias for document.getElementById.
293	 *
294	 * @since 5.1.0
295	 *
296	 * @param {HTMLElement} The requested element.
297	 */
298	function getElementById( elementId ) {
299		return document.getElementById( elementId );
300	}
301
302	/**
303	 * Moves the reply form from its current position to the reply location.
304	 *
305	 * @since 2.7.0
306	 *
307	 * @memberOf addComment
308	 *
309	 * @param {string} addBelowId HTML ID of element the form follows.
310	 * @param {string} commentId  Database ID of comment being replied to.
311	 * @param {string} respondId  HTML ID of 'respond' element.
312	 * @param {string} postId     Database ID of the post.
313	 * @param {string} replyTo    Form heading content.
314	 */
315	function moveForm( addBelowId, commentId, respondId, postId, replyTo ) {
316		// Get elements based on their IDs.
317		var addBelowElement = getElementById( addBelowId );
318		respondElement  = getElementById( respondId );
319
320		// Get the hidden fields.
321		var parentIdField   = getElementById( config.parentIdFieldId );
322		var postIdField     = getElementById( config.postIdFieldId );
323		var element, cssHidden, style;
324
325		var replyHeading         = getElementById( config.commentReplyTitleId );
326		var replyHeadingTextNode = replyHeading && replyHeading.firstChild;
327		var replyLinkToParent    = replyHeadingTextNode && replyHeadingTextNode.nextSibling;
328
329		if ( ! addBelowElement || ! respondElement || ! parentIdField ) {
330			// Missing key elements, fail.
331			return;
332		}
333
334		if ( 'undefined' === typeof replyTo ) {
335			replyTo = replyHeadingTextNode && replyHeadingTextNode.textContent;
336		}
337
338		addPlaceHolder( respondElement );
339
340		// Set the value of the post.
341		if ( postId && postIdField ) {
342			postIdField.value = postId;
343		}
344
345		parentIdField.value = commentId;
346
347		cancelElement.style.display = '';
348		addBelowElement.parentNode.insertBefore( respondElement, addBelowElement.nextSibling );
349
350		if ( replyHeadingTextNode && replyHeadingTextNode.nodeType === Node.TEXT_NODE ) {
351			if ( replyLinkToParent && 'A' === replyLinkToParent.nodeName && replyLinkToParent.id !== config.cancelReplyId ) {
352				replyLinkToParent.style.display = 'none';
353			}
354
355			replyHeadingTextNode.textContent = replyTo;
356		}
357
358		/*
359		 * This is for backward compatibility with third party commenting systems
360		 * hooking into the event using older techniques.
361		 */
362		cancelElement.onclick = function() {
363			return false;
364		};
365
366		// Focus on the first field in the comment form.
367		try {
368			for ( var i = 0; i < commentFormElement.elements.length; i++ ) {
369				element = commentFormElement.elements[i];
370				cssHidden = false;

371
372				// Get elements computed style.
373				if ( 'getComputedStyle' in window ) {
374					// Modern browsers.
375					style = window.getComputedStyle( element );
376				} else if ( document.documentElement.currentStyle ) {
377					// IE 8.
378					style = element.currentStyle;
379				}
380
381				/*
382				 * For display none, do the same thing jQuery does. For visibility,
383				 * check the element computed style since browsers are already doing
384				 * the job for us. In fact, the visibility computed style is the actual
385				 * computed value and already takes into account the element ancestors.
386				 */
387				if ( ( element.offsetWidth <= 0 && element.offsetHeight <= 0 ) || style.visibility === 'hidden' ) {
388					cssHidden = true;
389				}
390
391				// Skip form elements that are hidden or disabled.
392				if ( 'hidden' === element.type || element.disabled || cssHidden ) {
393					continue;
394				}
395
396				element.focus();
397				// Stop after the first focusable element.
398				break;
399			}
400		}
401		catch(e) {
402
403		}
404
405		/*
406		 * false is returned for backward compatibility with third party commenting systems
407		 * hooking into this function.
408		 */
409		return false;
410	}
411
412	/**
413	 * Add placeholder element.
414	 *
415	 * Places a place holder element above the #respond element for
416	 * the form to be returned to if needs be.
417	 *
418	 * @since 2.7.0
419	 *
420	 * @param {HTMLelement} respondElement the #respond element holding comment form.
421	 */
422	function addPlaceHolder( respondElement ) {
423		var temporaryFormId  = config.temporaryFormId;
424		var temporaryElement = getElementById( temporaryFormId );
425		var replyElement = getElementById( config.commentReplyTitleId );
426		var initialHeadingText = replyElement ? replyElement.firstChild.textContent : '';
427
428		if ( temporaryElement ) {
429			// The element already exists, no need to recreate.
430			return;
431		}
432
433		temporaryElement = document.createElement( 'div' );
434		temporaryElement.id = temporaryFormId;
435		temporaryElement.style.display = 'none';
436		temporaryElement.textContent = initialHeadingText;
437		respondElement.parentNode.insertBefore( temporaryElement, respondElement );
438	}
439
440	return {
441		init: init,
442		moveForm: moveForm
443	};
444})( window );