195 lines
7.7 KiB
JavaScript
195 lines
7.7 KiB
JavaScript
let isHighlight = localStorage.getItem('highlightChecked') !== 'false'; // default to true
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function cancelBtnHandler() {
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cancelHighlighting();
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document.getElementById("text-content").removeEventListener("click", fillInWord, false);
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document.getElementById("text-content").removeEventListener("touchstart", fillInWord, false);
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document.getElementById("text-content").addEventListener("click", fillInWord2, false);
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document.getElementById("text-content").addEventListener("touchstart", fillInWord2, false);
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}
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function showBtnHandler() {
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document.getElementById("text-content").removeEventListener("click", fillInWord2, false);
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document.getElementById("text-content").removeEventListener("touchstart", fillInWord2, false);
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document.getElementById("text-content").addEventListener("click", fillInWord, false);
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document.getElementById("text-content").addEventListener("touchstart", fillInWord, false);
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highLight();
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}
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function replaceWords(str, word) {
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let count = 0;
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const regex = new RegExp(`(^|\\s)${word}(?=\\s|$)`, 'g');
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let result = str.replace(regex, (match, p1) => {
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count++;
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// p1 保留前导空格（如果有），仅第一个匹配保留，后续匹配替换为空字符串
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return count === 1 ? match : p1;
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});
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return result;
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}
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function countWords(str, word) {
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// 使用正则表达式匹配目标单词的整个单词边界情况，包括前后空格、行首和行尾
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const regex = new RegExp(`(^|\\s)${word}(?=\\s|$)`, 'g');
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let match;
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let count = 0;
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// 迭代匹配所有符合条件的单词
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while ((match = regex.exec(str)) !== null) {
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count++;
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}
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return count;
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}
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//用于替换单词
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function replaceAllWords(str, word, replacement) {
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const regex = new RegExp(`(^|\\s)${word}(?=\\s|$)`, 'gi');
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let result = str.replace(regex, (match, p1) => {
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return p1 + replacement;
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});
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return result;
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}
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function getWord() {
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return window.getSelection ? window.getSelection().toString() : document.selection.createRange().text;
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}
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function highLight() {
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if (!isHighlight) return;
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let word = (getWord() + "").trim().replace(/[.,\/#!$%\^&\*;:{}=\-_`~()]/g, "");
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let articleContent = document.getElementById("article").innerHTML; // innerHTML保留HTML标签来保持部分格式，且适配不同的浏览器
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let pickedWords = document.getElementById("selected-words"); // words picked to the text area
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let dictionaryWords = document.getElementById("selected-words2"); // words appearing in the user's new words list
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let allWords = dictionaryWords === null ? pickedWords.value + " " : pickedWords.value + " " + dictionaryWords.value;
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let highlightWords = document.getElementById("selected-words3");
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allWords = highlightWords == null ? allWords : allWords + " " + highlightWords.value;
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const list = allWords.split(" "); // 将所有的生词放入一个list中
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if(word !== null && word !== "" && word !== " "){
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if(localStorage.getItem("nowWords").indexOf(word) !== -1 || localStorage.getItem("nowWords").indexOf(word.toLowerCase()) !== -1){
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articleContent = articleContent.replace(new RegExp('<span class="highlighted">' + word + '</span>', "g"), word);
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let count=countWords(pickedWords.value,word)
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let currentWords=localStorage.getItem("nowWords")+" "+word
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localStorage.setItem("nowWords",currentWords)
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//
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if(count>0){
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if(count==1){
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localStorage.setItem("nowWords",replaceWords(currentWords,word))
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}else{
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localStorage.setItem("nowWords",replaceAllWords(currentWords,word,""))
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}
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}
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pickedWords.value = localStorage.getItem("nowWords")
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document.getElementById("article").innerHTML = articleContent;
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return;
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}
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}
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let totalSet = new Set();
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for (let i = 0; i < list.length; ++i) {
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list[i] = list[i].replace(/(^\W*)|(\W*$)/g, ""); // 消除单词两边的非单词字符
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list[i] = list[i].replace('|', "");
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list[i] = list[i].replace('?', "");
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if (list[i] != "" && !totalSet.has(list[i])) {
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// 返回所有匹配单词的集合, 正则表达式RegExp()中, "\b"匹配一个单词的边界, g 表示全局匹配, i 表示对大小写不敏感。
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let matches = new Set(articleContent.match(new RegExp("\\b" + list[i] + "\\b", "gi")));
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totalSet = new Set([...totalSet, ...matches]);
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}
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}
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// 删除所有的"<span class='highlighted'>"标签,防止标签发生嵌套
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articleContent = articleContent.replace(new RegExp('<span class="highlighted">',"gi"), "")
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articleContent = articleContent.replace(new RegExp("</span>","gi"), "");
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// 将文章中所有出现该单词word的地方改为："<span class='highlighted'>" + word + "</span>"。
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for (let word of totalSet) {
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articleContent = articleContent.replace(new RegExp("\\b" + word + "\\b", "g"), "<span class='highlighted'>" + word + "</span>");
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}
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document.getElementById("article").innerHTML = articleContent;
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addClickEventToHighlightedWords();
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}
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function cancelHighlighting() {
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let articleContent = document.getElementById("article").innerHTML;
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articleContent = articleContent.replace(new RegExp('<span class="highlighted">',"gi"), "")
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articleContent = articleContent.replace(new RegExp("</span>","gi"), "");
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document.getElementById("article").innerHTML = articleContent;
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}
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function fillInWord() {
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highLight();
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}
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function fillInWord2() {
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cancelHighlighting();
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}
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function toggleHighlighting() {
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if (isHighlight) {
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isHighlight = false;
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cancelHighlighting();
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} else {
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isHighlight = true;
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highLight();
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}
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localStorage.setItem('highlightChecked', isHighlight);
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}
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function showWordMeaning(event) {
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const word = event.target.innerText.trim().replace(/[.,\/#!$%\^&\*;:{}=\-_`~()]/g, "").toLowerCase();
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const apiUrl = '/translate';
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const rect = event.target.getBoundingClientRect();
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const tooltipX = rect.left + window.scrollX;
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const tooltipY = rect.top + window.scrollY + rect.height;
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// 发送POST请求
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fetch(apiUrl, {
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method: 'POST',
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headers: {
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'Content-Type': 'application/json',
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},
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body: JSON.stringify({ word: word }), // 发送的JSON数据
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})
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.then(response => {
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if (!response.ok) {
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throw new Error('Network response was not ok');
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}
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return response.json(); // 解析JSON响应
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})
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.then(data => {
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// 假设data.translation是翻译结果
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const tooltip = document.getElementById('tooltip');
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if (!tooltip) {
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console.error('Tooltip element not found');
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return;
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}
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tooltip.textContent = data.translation || '没有找到该单词的中文意思';
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tooltip.style.left = `${tooltipX}px`;
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tooltip.style.top = `${tooltipY}px`;
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tooltip.style.display = 'block';
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tooltip.style.position = 'absolute';
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tooltip.style.background = 'yellow';
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// 可以在这里添加点击事件监听器来隐藏tooltip，但注意避免内存泄漏
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document.addEventListener('click', function handler(e) {
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if (!tooltip.contains(e.target)) {
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tooltip.style.display = 'none';
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document.removeEventListener('click', handler);
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}
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});
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})
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.catch(error => {
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console.error('There was a problem with your fetch operation:', error);
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});
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}
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function addClickEventToHighlightedWords() {
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const highlightedWords = document.querySelectorAll('.highlighted');
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highlightedWords.forEach(word => {
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word.addEventListener('click', showWordMeaning);
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});
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}
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showBtnHandler();
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