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/**
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* Created by Xiaotao.Nie on 09/04/2018.
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* All right reserved
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* IF you have any question please email onlythen@yeah.net
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*/
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// Global functions and listeners
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window.onresize = () => {
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// when window resize , we show remove some class that me be added
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// often for debug
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if(window.document.documentElement.clientWidth > 680){
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let aboutContent = document.getElementById('nav-content')
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aboutContent.classList.remove('hide-block')
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aboutContent.classList.remove('show-block');
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}
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// if(window.isPost){
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// reLayout()
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// }
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reHeightToc();
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};
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// Nav switch function on mobile
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/*****************************************************************************/
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const navToggle = document.getElementById('site-nav-toggle');
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navToggle.addEventListener('click', () => {
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let aboutContent = document.getElementById('nav-content')
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if (!aboutContent.classList.contains('show-block')) {
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aboutContent.classList.add('show-block');
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aboutContent.classList.remove('hide-block')
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} else {
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aboutContent.classList.add('hide-block')
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aboutContent.classList.remove('show-block');
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}
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})
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// global search
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/*****************************************************************************/
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const searchButton = document.getElementById('search')
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const searchField = document.getElementById('search-field')
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const searchInput = document.getElementById('search-input')
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const searchResultContainer = document.getElementById('search-result-container')
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const escSearch = document.getElementById('esc-search')
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const beginSearch = document.getElementById('begin-search')
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searchField.addEventListener('mousewheel',(e) => {
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// e.preventDefault()
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e.stopPropagation()
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return false
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}, false)
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var searchJson;
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var caseSensitive = false
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searchButton.addEventListener('click', () => {
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search()
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});
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escSearch.addEventListener('click',() => {
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hideSearchField()
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})
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beginSearch.addEventListener('click',() => {
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let keyword = searchInput.value;
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if(keyword){
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searchFromKeyWord(keyword)
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}
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})
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function toggleSeachField(){
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if (!searchField.classList.contains('show-flex-fade')) {
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showSearchField()
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} else {
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hideSearchField()
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}
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}
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function showSearchField() {
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searchInput.focus()
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searchField.classList.add('show-flex-fade');
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searchField.classList.remove('hide-flex-fade');
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}
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function hideSearchField(){
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window.onkeydown = null;
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searchField.classList.add('hide-flex-fade');
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searchField.classList.remove('show-flex-fade');
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}
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function searchFromKeyWord(keyword = ""){
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let result = [];
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let sildeWindowSize = 100;
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let handleKeyword = keyword
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if(!caseSensitive){
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handleKeyword = keyword.toLowerCase()
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}
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if(!searchJson) return -1;
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else {
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searchJson.forEach((item) => {
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if(!item.title || !item.content) return 0; // break
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let title = item.title
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let content = item.content.trim().replace(/<[^>]+>/g,"").replace(/[`#\n]/g,"");
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let lowerTitle = title,lowerContent = content;
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if(!caseSensitive){
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lowerTitle = title.toLowerCase();
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lowerContent = content.toLowerCase();
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}
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if(lowerTitle.indexOf(handleKeyword) !== -1 || lowerContent.indexOf(handleKeyword) !== -1){
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let resultItem = {}
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resultItem.title = title.replace(keyword, "<span class='red'>" + keyword + '</span>');
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resultItem.url = item.url;
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resultItem.content = [];
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let lastend = 0
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while(lowerContent.indexOf(handleKeyword) !== -1){
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let begin = lowerContent.indexOf(handleKeyword) - sildeWindowSize / 2 < 0 ? 0 : lowerContent.indexOf(handleKeyword) - sildeWindowSize / 2
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let end = begin + sildeWindowSize;
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let reg = caseSensitive ? new RegExp('('+keyword+')','g') : new RegExp('('+keyword+')','ig')
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resultItem.content.push("..." + content.slice(lastend + begin, lastend + end).replace(reg, "<span class='red'>$1</span>") + "...")
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lowerContent = lowerContent.slice(end, lowerContent.length)
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lastend = end
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}
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// resultItem.title = title.replace(keyword, "<span class='red'>" + keyword + '</span>');
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result.push(resultItem)
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}
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})
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}
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if(!result.length){
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searchResultContainer.innerHTML = `
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<div class="no-search-result">No Result</div>
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`
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return;
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}
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let searchFragment = document.createElement('ul')
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for(let item of result){
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let searchItem = document.createElement('li');
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let searchTitle = document.createElement('a');
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searchTitle.href = item.url
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searchTitle.innerHTML = item.title;
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searchItem.appendChild(searchTitle)
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if(item.content.length) {
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let searchContentLiContainer = document.createElement('ul')
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for (let citem of item.content) {
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let searchContentFragment = document.createElement('li')
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searchContentFragment.innerHTML = citem;
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searchContentLiContainer.appendChild(searchContentFragment)
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}
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searchItem.appendChild(searchContentLiContainer)
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}
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searchFragment.appendChild(searchItem)
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}
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while(searchResultContainer.firstChild){
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searchResultContainer.removeChild(searchResultContainer.firstChild)
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}
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searchResultContainer.appendChild(searchFragment)
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}
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function search(){
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toggleSeachField()
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window.onkeydown = (e) => {
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if (e.which === 27) {
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/** 这里编写当ESC按下时的处理逻辑！ */
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toggleSeachField()
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} else if(e.which === 13){
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// 回车按下
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let keyword = searchInput.value;
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if(keyword){
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searchFromKeyWord(keyword)
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}
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}
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}
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if(!searchJson){
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let isXml;
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let search_path = window.hexo_search_path;
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if (search_path.length === 0) {
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search_path = "search.json";
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} else if (/json$/i.test(search_path)) {
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isXml = false;
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}
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let path = window.hexo_root+ search_path;
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$.ajax({
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url: path,
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dataType: isXml ? "xml" : "json",
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async: true,
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success: function (res) {
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searchJson = isXml ? $("entry", res).map(function() {
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return {
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title: $("title", this).text(),
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content: $("content",this).text(),
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url: $("url" , this).text()
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};
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}).get() : res;
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}
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});
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}
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}
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// directory function in post pages
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/*****************************************************************************/
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function getDistanceOfLeft(obj) {
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let left = 0;
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let top = 0;
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while (obj) {
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left += obj.offsetLeft;
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top += obj.offsetTop;
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obj = obj.offsetParent;
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}
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return {
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left:left,
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top:top
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};
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}
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var toc = document.getElementById('toc')
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var tocToTop = getDistanceOfLeft(toc).top;
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function reHeightToc(){
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if(toc) { // resize toc height
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toc.style.height = ( document.documentElement.clientHeight - 10 ) + 'px';
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toc.style.overflowY = 'scroll';
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}
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}
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reHeightToc();
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if(window.isPost){
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var result = []
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var nameSet = new Set();
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if(!toc || !toc.children || !toc.children[0]){
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// do nothing
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}
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else {
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if (toc.children[0].nodeName === "OL") {
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let ol = Array.from(toc.children[0].children)
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function getArrayFromOl(ol) {
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let result = []
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// let escape = function (item) {
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// return item.replace(/<[^>]+>/g, "").replace(/^\s\s*/, '').replace(/\s\s*$/, '').replace(/[\. _]/g, '-')
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// }
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ol.forEach((item) => {
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if (item.children.length === 1) {
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// TODO: need change
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let value = item.children[0].getAttribute('href').replace(/^#/,"")
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result.push({
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value: [value],
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dom: item
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})
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nameSet.add(value)
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}
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else {
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let concatArray = getArrayFromOl(Array.from(item.children[1].children))
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nameSet.add(item.children[0].getAttribute('href').replace(/^#/,""))
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result.push({
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value: [item.children[0].getAttribute('href').replace(/^#/,"")].concat(concatArray.reduce((p, n) => {
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p = p.concat(n.value)
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return p;
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}, [])),
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dom: item
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})
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result = result.concat(concatArray)
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}
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})
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return result
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}
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result = getArrayFromOl(ol)
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}
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var nameArray = Array.from(nameSet)
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function reLayout() {
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let scrollToTop = document.documentElement.scrollTop || window.pageYOffset // Safari is special
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if(tocToTop === 0) {
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// Fix bug that when resize window the toc layout may be wrong
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toc = document.getElementById('toc')
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toc.classList.remove('toc-fixed')
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tocToTop = getDistanceOfLeft(toc).top;
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}
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if (tocToTop <= scrollToTop + 10) {
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if (!toc.classList.contains('toc-fixed'))
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toc.classList.add('toc-fixed')
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} else {
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if (toc.classList.contains('toc-fixed'))
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toc.classList.remove('toc-fixed')
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}
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let minTop = 9999;
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let minTopsValue = ""
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for (let item of nameArray) {
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let dom = document.getElementById(item) || document.getElementById(item.replace(/\s/g, ''))
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if (!dom) continue
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let toTop = getDistanceOfLeft(dom).top - scrollToTop;
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if (Math.abs(toTop) < minTop) {
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minTop = Math.abs(toTop)
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minTopsValue = item
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}
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// console.log(minTopsValue, minTop)
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}
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if (minTopsValue) {
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for (let item of result) {
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if (item.value.indexOf(minTopsValue) !== -1) {
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item.dom.classList.add("active")
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} else {
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item.dom.classList.remove("active")
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}
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}
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}
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}
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reLayout()
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window.addEventListener('scroll', (e) => {
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reLayout()
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})
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}
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}
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