forked from Gitlink/forgeplus-react
272 lines
8.7 KiB
JavaScript
272 lines
8.7 KiB
JavaScript
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import React, { Fragment, useEffect, useRef, useState } from 'react'
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import { getUploadActionUrl, getUrl } from 'educoder'
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import ResizeObserver from 'resize-observer-polyfill';
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import '../../courses/css/Courses.css'
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import './css/TPMchallengesnew.css'
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import 'codemirror/lib/codemirror.css'
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const $ = window.$
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const mdIcons = ["bold", "italic", "|", "list-ul", "list-ol", "|", "code", "code-block", "link", "|", "inline-latex", "latex", '|', "image", "table", '|', "line-break", "watch", "clear"]
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const NULL_CH = '▁'
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function md_add_data(k, mdu, d) {
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window.sessionStorage.setItem(k + mdu, d);
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}
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// 清空保存的数据
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function md_clear_data(k, mdu, id) {
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window.sessionStorage.removeItem(k + mdu);
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var id1 = "#e_tip_" + id;
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var id2 = "#e_tips_" + id;
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if (k == 'content') {
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$(id2).html(" ");
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} else {
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$(id1).html(" ");
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}
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}
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window.md_clear_data = md_clear_data
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function md_rec_data(k, mdu, id) {
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if (window.sessionStorage.getItem(k + mdu) !== null) {
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var editor = $("#e_tips_" + id).data('editor');
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editor.setValue(window.sessionStorage.getItem(k + mdu));
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// /shixuns/b5hjq9zm/challenges/3977/tab=3 setValue可能导致editor样式问题
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md_clear_data(k, mdu, id);
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}
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}
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window.md_rec_data = md_rec_data;
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function md_elocalStorage(editor, mdu, id) {
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let oc = window.sessionStorage.getItem('content' + mdu)
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if (oc !== null && oc != editor.getValue()) {
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$("#e_tips_" + id).data('editor', editor);
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let h = '您上次有已保存的数据，是否<a style="cursor: pointer;" class="link-color-blue" onclick="md_rec_data(\'content\',\'' + mdu + '\',\'' + id + '\')">恢复</a> ? / <a style="cursor: pointer;" class="link-color-blue" onclick="md_clear_data(\'content\',\'' + mdu + '\',\'' + id + '\')">不恢复</a>';
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$("#e_tips_" + id).html(h)
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}
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let tid = setInterval(function () {
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let d = new Date();
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let h = d.getHours();
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let m = d.getMinutes();
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let s = d.getSeconds();
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h = h < 10 ? '0' + h : h;
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m = m < 10 ? '0' + m : m;
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s = s < 10 ? '0' + s : s;
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if (editor.getValue().trim() != "") {
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md_add_data("content", mdu, editor.getValue());
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let id2 = "#e_tips_" + id;
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let textStart = " 数据已于 "
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let text = textStart + h + ':' + m + ':' + s + " 保存 ";
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// 占位符
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let oldHtml = $(id2).html();
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if (oldHtml && oldHtml != ' ' && oldHtml.startsWith(textStart) == false) {
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$(id2).html(oldHtml.split(' (')[0] + ` (${text})`);
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} else {
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$(id2).html(text);
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}
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}
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}, 10000)
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return tid
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}
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export default ({ mdID, onChange, onCMBeforeChange, onCMBlur, error = false, className = '', noStorage = false, imageExpand = true, placeholder = '', width = '100%', height = 400, initValue = '', emoji, watch, showNullButton = false, showResizeBar = false, startInit = true }) => {
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const editorEl = useRef()
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const resizeBarEl = useRef()
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const [editorInstance, setEditorInstance] = useState()
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const containerId = `mdEditor_${mdID}`
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const editorBodyId = `mdEditors_${mdID}`
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const tipId = `e_tips_mdEditor_${mdID}`
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function onLayout() {
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let ro
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if (editorEl.current) {
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ro = new ResizeObserver(entries => {
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for (let entry of entries) {
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if (entry.target.offsetHeight > 0 || entry.target.offsetWidth > 0) {
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editorInstance.resize()
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editorInstance.cm.refresh()
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editorInstance.cm.focus()
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}
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}
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})
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ro.observe(editorEl.current)
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}
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return ro
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}
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useEffect(() => {
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if (editorInstance) {
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return
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}
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if (!startInit) { return }
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const editor_instance = window.editormd(containerId, {
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width,
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height,
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path: getUrl("/editormd/lib/"),
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markdown: initValue,
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syncScrolling: "single",
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tex: true,
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tocm: true,
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emoji: !!emoji,
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taskList: true,
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codeFold: true,
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searchReplace: true,
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htmlDecode: "style,script,iframe",
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sequenceDiagram: true,
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autoFocus: false,
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watch: watch === undefined ? true : watch,
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saveHTMLToTextarea: true,
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dialogMaskOpacity: 0.6,
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placeholder: placeholder,
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imageUpload: true,
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imageFormats: ["jpg", "jpeg", "gif", "png", "bmp", "webp", "JPG", "JPEG", "GIF", "PNG", "BMP", "WEBP"],
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imageUploadURL: getUploadActionUrl(),
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toolbarIcons: function () {
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return showNullButton ? [...mdIcons, 'null-button'] : mdIcons
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},
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toolbarIconsClass: {
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"line-break": "fa-minus",
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},
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toolbarCustomIcons: {
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"inline-latex": "<a title='行内公式' class='latex' ><i name='inline-latex' class='fa iconfont icon-hangneigongshi font-14'></i></a>",
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"latex": "<a title='多行公式' class='latex' ><i name='latex' class='fa iconfont icon-duohanggongshi font-16'></i></a>",
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"null-button": "<a class='pr' title='增加填空'><i class='border-left'><span></span></i><span name='null-button' class='fa fillTip'>点击插入填空项</span><i class='iconfont fa icon-edit font-16' name='null-button'></i></a>",
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},
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toolbarHandlers: {
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"line-break": function (cm, icon, cursor, selection) {
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cm.replaceSelection("<br/>")
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},
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"null-button": function (cm, icon, cursor, selection) {
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if (selection === "") {
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cm.setCursor(cursor.line, cursor.ch + 1)
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}
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cm.replaceSelection(NULL_CH)
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},
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"inline-latex": function (cm, icon, cursor, selection) {
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cm.replaceSelection("$$" + selection + "$$");
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cm.setCursor(cursor.line, cursor.ch + 2);
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cm.focus()
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},
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"latex": function (cm, icon, cursor, selection) {
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cm.replaceSelection("```latex\n\n" + selection + "```");
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cm.setCursor(cursor.line + 1, 0);
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cm.focus()
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},
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},
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lang: {
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toolbar: {
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"latex": "多行公式",
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"line-break": "换行"
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}
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},
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onload: function () {
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setEditorInstance(editor_instance)
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}
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})
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}, [containerId, editorInstance, startInit])
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const cmEl = editorInstance && editorInstance.cm
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useEffect(() => {
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if (cmEl) {
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let tid = null
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let ro
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if (onCMBlur) {
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editorInstance.cm.on('blur', () => { onCMBlur(editorInstance.getValue()) })
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}
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if (onCMBeforeChange) {
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editorInstance.cm.on('beforeChange', (cm, change) => {
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onCMBeforeChange(cm, change)
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})
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}
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if (!noStorage) {
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tid = md_elocalStorage(editorInstance, `MDEditor__${containerId}`, containerId)
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}
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if (onChange) {
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editorInstance.cm.on('change', (cm) => {
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onChange(cm.getValue())
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})
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}
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ro = onLayout()
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return () => {
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if (!noStorage) {
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clearInterval(tid)
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}
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if (ro) {
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ro.unobserve(editorEl.current)
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}
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}
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}
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}, [cmEl])
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useEffect(() => {
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if (editorInstance && initValue !== undefined) {
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if (initValue != null && initValue != editorInstance.getValue()) {
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editorInstance.setValue(initValue.toString())
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}
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}
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}, [editorInstance, initValue, containerId])
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useEffect(() => {
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if (resizeBarEl.current) {
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let el = resizeBarEl.current
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let dragging = false
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let startY = 0
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function onMouseDown(e) {
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dragging = true
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startY = e.pageY
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}
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function onMouseUp() {
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dragging = false
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}
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function onMouseMove(e) {
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if (dragging) {
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let delta = e.pageY - startY
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if (delta < 0) {
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delta = 0
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}
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if (delta > 300) {
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delta = 300
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}
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let resizeH = height + delta + 'px'
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editorInstance.resize('', resizeH)
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}
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}
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el.addEventListener('mousedown', onMouseDown)
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document.addEventListener('mousemove', onMouseMove)
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document.addEventListener('mouseup', onMouseUp)
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return () => {
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el.removeEventListener('mousedown', onMouseDown)
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document.removeEventListener('mousemove', onMouseMove)
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document.removeEventListener('mouseup', onMouseUp)
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}
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}
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}, [
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editorInstance, resizeBarEl
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])
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return (
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<Fragment>
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<div ref={editorEl} className={`df ${className} ${imageExpand && 'editormd-image-click-expand'} `} >
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<div className={`edu-back-greyf5 radius4 editormd ${error ? 'error' : ''}`} id={containerId} >
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<textarea style={{ display: 'none' }} id={editorBodyId} name="content"></textarea>
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<div className="CodeMirror cm-s-defualt"></div>
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</div>
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</div>
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{showResizeBar ? <a ref={resizeBarEl} className='editor-resize'></a> : null}
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<div className={"fr rememberTip"}>
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{noStorage == true ? null : <div id={tipId} className="edu-txt-right color-grey-cd font-12"></div>}
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</div>
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</Fragment>
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)
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} |