init

wp-includes/js/comment-reply.js

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+/**
+ * @summary Handles the addition of the comment form.
+ *
+ * @since 2.7.0
+ *
+ * @type {Object}
+ */
+var addComment = {
+	/**
+	 * @summary Retrieves the elements corresponding to the given IDs.
+	 *
+	 * @since 2.7.0
+	 *
+	 * @param {string} commId The comment ID.
+	 * @param {string} parentId The parent ID.
+	 * @param {string} respondId The respond ID.
+	 * @param {string} postId The post ID.
+	 * @returns {boolean} Always returns false.
+	 */
+	moveForm: function( commId, parentId, respondId, postId ) {
+		var div, element, style, cssHidden,
+			t           = this,
+			comm        = t.I( commId ),
+			respond     = t.I( respondId ),
+			cancel      = t.I( 'cancel-comment-reply-link' ),
+			parent      = t.I( 'comment_parent' ),
+			post        = t.I( 'comment_post_ID' ),
+			commentForm = respond.getElementsByTagName( 'form' )[0];
+
+		if ( ! comm || ! respond || ! cancel || ! parent || ! commentForm ) {
+			return;
+		}
+
+		t.respondId = respondId;
+		postId = postId || false;
+
+		if ( ! t.I( 'wp-temp-form-div' ) ) {
+			div = document.createElement( 'div' );
+			div.id = 'wp-temp-form-div';
+			div.style.display = 'none';
+			respond.parentNode.insertBefore( div, respond );
+		}
+
+		comm.parentNode.insertBefore( respond, comm.nextSibling );
+		if ( post && postId ) {
+			post.value = postId;
+		}
+		parent.value = parentId;
+		cancel.style.display = '';
+
+		/**
+		 * @summary Puts back the comment, hides the cancel button and removes the onclick event.
+		 *
+		 * @returns {boolean} Always returns false.
+		 */
+		cancel.onclick = function() {
+			var t       = addComment,
+				temp    = t.I( 'wp-temp-form-div' ),
+				respond = t.I( t.respondId );
+
+			if ( ! temp || ! respond ) {
+				return;
+			}
+
+			t.I( 'comment_parent' ).value = '0';
+			temp.parentNode.insertBefore( respond, temp );
+			temp.parentNode.removeChild( temp );
+			this.style.display = 'none';
+			this.onclick = null;
+			return false;
+		};
+
+		/*
+		 * Sets initial focus to the first form focusable element.
+		 * Uses try/catch just to avoid errors in IE 7- which return visibility
+		 * 'inherit' when the visibility value is inherited from an ancestor.
+		 */
+		try {
+			for ( var i = 0; i < commentForm.elements.length; i++ ) {
+				element = commentForm.elements[i];
+				cssHidden = false;
+
+				// Modern browsers.
+				if ( 'getComputedStyle' in window ) {
+					style = window.getComputedStyle( element );
+				// IE 8.
+				} else if ( document.documentElement.currentStyle ) {
+					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( er ) {}
+
+		return false;
+	},
+
+	/**
+	 * @summary Returns the object corresponding to the given ID.
+	 *
+	 * @since 2.7.0
+	 *
+	 * @param {string} id The ID.
+	 * @returns {Element} The element belonging to the ID.
+	 */
+	I: function( id ) {
+		return document.getElementById( id );
+	}
+};