AlkantarClanX12
Current Path : /home/thanudqk/thepball.com/wp-content/plugins/hummingbird-performance/_src/js/ |
Current File : //home/thanudqk/thepball.com/wp-content/plugins/hummingbird-performance/_src/js/lazy-load.js |
/* global wphbGlobal */ /* global ajaxurl */ ( function () { 'use strict'; const WPHBLazyComment = { commentsFormLoading : false, commentsLoading: false, commentsLoadComplete: false, commentsLoaded: 0, loadOnScroll: false, loadCommentFormOnScroll : false, commentLoadingMethod: 'click', //or scroll pageCommentsOption: 0, totalCommentsPages: 1, commentsPageOrder: 'newest', //or oldest cpageNum: 1, postId: 0, commentNonce: '', commentsContainer: null, commentList: null, loadCommentsButton: null, loadCommentsButtonWrap: null, commentsEndIndicator: null, commentsLoadSpinnerWrap: null, ajaxurl: null, init() { if ( wphbGlobal ) { this.ajaxurl = wphbGlobal.ajaxurl; } else { this.ajaxurl = ajaxurl; } // Run comment lazy loader if we are in site fron-end and in a single page. if ( document.getElementById( 'wphb-comments-wrap' ) ) { this.initCommentLazyLoader(); } }, initCommentLazyLoader() { this.commentLoadingMethod = document.getElementById( 'wphb-load-comments-method' ).value; this.pageCommentsOption = parseInt( document.getElementById( 'wphb-page-comments-option' ).value ); this.totalCommentsPages = parseInt( document.getElementById( 'wphb-total-comments-pages' ).value ); this.commentsPageOrder = document.getElementById( 'wphb-comments-page-order' ).value; this.cpageNum = parseInt( document.getElementById( 'wphb-cpage-num' ).value ); this.postId = parseInt( document.getElementById( 'wphb-post-id' ).value ); this.commentNonce = document.getElementById( 'comment-template-nonce' ).value; this.commentsContainer = document.getElementById( 'wphb-comments-container' ); this.commentsEndIndicator = document.getElementById( 'wphb-comments-end-indicator' ); this.commentsLoadSpinnerWrap = document.getElementById( 'wphb-load-comments-spinner-wrap' ); if ( this.commentLoadingMethod === 'click' ) { this.loadCommentsButton = document.getElementById( 'wphb-load-comments' ); this.loadCommentsButtonWrap = document.getElementById( 'wphb-load-comments-button-wrap' ); } //If we've the load on click enabled if ( this.commentLoadingMethod === 'click' ) { this.loadCommentsButton.addEventListener( 'click', () => WPHBLazyComment.loadComments() ); //At the very beginning load the comment form and basic wrappers this.loadCommentFormOnScroll = true; window.addEventListener( 'scroll', WPHBLazyComment.handleScrollingForLoadForm ); //For some small posts comment area might be in view port on page load. //So try to run loadComments on page load. WPHBLazyComment.handleScrollingForLoadForm(); } //If we've the load on scroll enabled if ( this.commentLoadingMethod === 'scroll' ) { this.loadOnScroll = true; window.addEventListener( 'scroll', () => WPHBLazyComment.handleScrolling() ); //For some small posts comment area might be in view port on page load. //So try to run loadCommentsForm on page load. WPHBLazyComment.handleScrolling(); } }, enableCommentLoad() { if ( this.loadCommentsButton ) { this.loadCommentsButton.removeAttribute( 'disabled' ); } this.loadOnScroll = true; }, disableCommentLoad() { if ( this.loadCommentsButton ) { this.loadCommentsButton.setAttribute( 'disabled', 'disabled' ); } this.loadOnScroll = false; this.loadCommentFormOnScroll = false; }, moveLoadButton() { if ( this.loadCommentsButton ) { this.insertAfter( this.loadCommentsButtonWrap, this.commentList ); } }, moveCommentsEndIndicator() { this.insertAfter( this.commentsEndIndicator, this.commentList ); }, moveCommentForm() { const form = document.getElementById( 'respond' ); if ( form ) { this.insertBefore( form, this.commentList ); } }, hideLoadButton() { if ( this.loadCommentsButton ) { this.loadCommentsButton.style.display = 'none'; } }, showCommentLoadSpinner() { this.commentsLoadSpinnerWrap.style.display = 'block'; }, hideCommentLoadSpinner() { this.commentsLoadSpinnerWrap.style.display = 'none'; }, moveCommentLoadSpinner() { this.insertAfter( this.commentsLoadSpinnerWrap, this.commentList ); }, finishCommentLoad() { this.commentsLoading = false; this.disableCommentLoad(); this.hideLoadButton(); }, handleScrolling() { /** Check if in viewport and loadOnScroll is enabled **/ if ( ! this.loadOnScroll || ! this.isInViewport( this.commentsEndIndicator ) ) { return null; } this.loadComments(); }, handleScrollingForLoadForm() { /** Check if in viewport and loadCommentFormOnScroll is enabled **/ if ( ! WPHBLazyComment.loadCommentFormOnScroll || ! WPHBLazyComment.isInViewport( WPHBLazyComment.commentsEndIndicator ) ) { return null; } window.removeEventListener( 'scroll', WPHBLazyComment.handleScrollingForLoadForm ); WPHBLazyComment.loadCommentsForm(); }, loadCommentsForm() { this.commentsFormLoading = true; this.loadComments(); }, loadComments() { if ( this.commentsLoadComplete || this.commentsLoading ) { return false; } this.getCommentsTemplate(); }, getCommentsTemplate() { this.disableCommentLoad(); this.showCommentLoadSpinner(); const cxhr = new XMLHttpRequest(); this.commentsLoading = true; cxhr.open( 'GET', WPHBLazyComment.ajaxurl + '?action=get_comments_template&id=' + WPHBLazyComment.postId + '&cpage_num=' + WPHBLazyComment.cpageNum + '&_nonce=' + WPHBLazyComment.commentNonce ); cxhr.onload = function () { /** Append the comment template **/ if ( 200 === cxhr.status ) { const response = JSON.parse( cxhr.responseText ); if ( 'undefined' !== typeof response.data ) { /** Append the comment template/ Error message returned in Ajax response **/ if( WPHBLazyComment.commentsFormLoading === true ) { WPHBLazyComment.enableCommentLoad(); } else { WPHBLazyComment.commentsLoaded++; WPHBLazyComment.cpageNum = WPHBLazyComment.commentsPageOrder === 'newest' ? WPHBLazyComment.cpageNum - 1 : WPHBLazyComment.cpageNum + 1; if ( WPHBLazyComment.cpageNum < 1 || WPHBLazyComment.cpageNum > WPHBLazyComment.totalCommentsPages ) { WPHBLazyComment.finishCommentLoad(); } else { WPHBLazyComment.enableCommentLoad(); } } WPHBLazyComment.putCommentContent( response.data.content ); if( WPHBLazyComment.commentsFormLoading === true ) { WPHBLazyComment.commentsFormLoading = false; } } else { WPHBLazyComment.enableCommentLoad(); } } else { /** Show the error, if failed; Enable the button, scroll loading **/ WPHBLazyComment.enableCommentLoad(); } WPHBLazyComment.commentsLoading = false; WPHBLazyComment.hideCommentLoadSpinner(); }; cxhr.send(); }, putCommentContent( content ) { const html = this.stringToHTML( content ); const comment = html.querySelector( '.comment' ); if ( ! comment ) { return; } const commentList = comment.parentNode; if( WPHBLazyComment.commentsFormLoading === true ) { commentList.innerHTML = ''; } if ( this.commentsLoaded > 1 || ( this.commentLoadingMethod === 'click' && WPHBLazyComment.commentsFormLoading === false ) ) { this.commentList.innerHTML += commentList.innerHTML; } else { this.commentsContainer.appendChild( html ); this.commentList = commentList; this.moveCommentsEndIndicator(); this.moveCommentLoadSpinner(); this.moveLoadButton(); if ( this.commentLoadingMethod === 'scroll' ) { this.moveCommentForm(); } } }, stringToHTML( str ) { str = '<div>' + str + '</div>'; const support = ( function () { if ( ! window.DOMParser ) return false; const parser = new DOMParser(); try { parser.parseFromString( 'x', 'text/html' ); } catch ( err ) { return false; } return true; } )(); //If DOMParser is supported, use it if ( support ) { const parser = new DOMParser(); const doc = parser.parseFromString( str, 'text/html' ); return doc.body.firstChild; } // Otherwise, fallback to old-school method const dom = document.createElement( 'div' ); dom.innerHTML = str; return dom.firstChild; }, insertAfter( newNode, referenceNode ) { referenceNode.parentNode.insertBefore( newNode, referenceNode.nextSibling ); }, insertBefore( newNode, referenceNode ) { referenceNode.parentNode.insertBefore( newNode, referenceNode ); }, isInViewport( element ) { const bounding = element.getBoundingClientRect(); return ( bounding.top >= 0 && bounding.left >= 0 && bounding.bottom <= ( window.innerHeight || document.documentElement.clientHeight ) && bounding.right <= ( window.innerWidth || document.documentElement.clientWidth ) ); }, }; document.addEventListener( 'DOMContentLoaded', function () { WPHBLazyComment.init(); } ); } )();