利用Electron简单撸一个Markdown编辑器的方法

# 克隆示例项目的仓库
$ git clone https://github.com/electron/electron-quick-start

# 进入这个仓库
$ cd electron-quick-start

# 安装依赖并运行
$ npm install && npm start

vue init simulatedgreg/electron-vue FanlyMD

npm installnpm run dev

npm install buefy vue2-ace-editor vue-material-design-icons --save

npm install markdown-it --save

npm install electron-store --save

.
├── README.md
├── app-screenshot.jpg
├── appveyor.yml
├── build
│   └── icons
│     ├── 256x256.png
│     ├── icon.icns
│     └── icon.ico
├── dist
│   ├── electron
│   │   └── main.js
│   └── web
├── package.json
├── src
│   ├── index.ejs
│   ├── main
│   │   ├── index.dev.js
│   │   ├── index.js
│   │   ├── mainMenu.js
│   │   ├── preview-server.js
│   │   └── renderer.js
│   ├── renderer
│   │   ├── App.vue
│   │   ├── assets
│   │   │   ├── css
│   │   │   │   └── coding01.css
│   │   │   └── logo.png
│   │   ├── components
│   │   │   ├── EditorPage.vue
│   │   │   └── Preview.vue
│   │   └── main.js
│   └── store
│     ├── content.js
│     └── store.js
├── static
└── yarn.lock

watch: {
  input: function(newContent, oldContent) {
    messageBus.newContentToRender(newContent);
  }
},

import Vue from 'vue';
import App from './App';
import 'buefy/dist/buefy.css';
import util from 'util';
import { ipcRenderer } from 'electron';

if (!process.env.IS_WEB) Vue.use(require('vue-electron'))
Vue.config.productionTip = false

export const messageBus = new Vue({
 methods: {
  newContentToRender(newContent) {
   ipcRenderer.send('newContentToRender', newContent);
  },
  saveCurrentFile() { }
 }
});

// 监听 newContentToPreview，将 url2preview 传递给 vue 的newContentToPreview 事件
// 即，传给 Preview 组件获取
ipcRenderer.on('newContentToPreview', (event, url2preview) => {
 console.log(`ipcRenderer.on newContentToPreview ${util.inspect(event)} ${url2preview}`);
 messageBus.$emit('newContentToPreview', url2preview);
});

/* eslint-disable no-new */
new Vue({
 components: { App },
 template: ''
}).$mount('#app')

import {
  app
} from 'electron'
import path from 'path'
import fs from 'fs'
import EStore from 'electron-store'

class Content {
  constructor() {
    this.estore = new EStore()
    this.estore.set('headercontent', `
        
本文 111字，需要  1分钟
`)
    this.estore.set('footercontent', `

       coding01 期待您继续关注
       `)
  }

  // This will just return the property on the `data` object
  get(key, val) {
    return this.estore.get('windowBounds', val)
  }

  // ...and this will set it
  set(key, val) {
    this.estore.set(key, val)
  }

  getContent(content) {
    return this.headerContent + content + this.footerContent
  }

  getHeaderContent() {
    return this.estore.get('headercontent', '')
  }
  
  getFooterContent() {
    return this.estore.get('footercontent', '')
  }
}

// expose the class
export default Content

ipcMain.on('newContentToRender', function(event, content) {
 const rendered = renderContent(headerContent, footerContent, content, cssContent, 'layout1.html');
 
 const previewURL = newContent(rendered);
 mainWindow.webContents.send('newContentToPreview', previewURL);
});

import mdit from 'markdown-it';
import ejs from 'ejs';

const mditConfig = {
  html:     true, // Enable html tags in source
  xhtmlOut:   true, // Use '/' to close single tags (
)
  breaks:    false, // Convert '\n' in paragraphs into 

  // langPrefix:  'language-', // CSS language prefix for fenced blocks
  linkify:   true, // Autoconvert url-like texts to links
  typographer: false, // Enable smartypants and other sweet transforms
 
  // Highlighter function. Should return escaped html,
  // or '' if input not changed
  highlight: function (/*str, , lang*/) { return ''; }
};
const md = mdit(mditConfig);

const layouts = [];

export function renderContent(headerContent, footerContent, content, cssContent, layoutFile) {
  const text = md.render(content);
  const layout = layouts[layoutFile];
  const rendered = ejs.render(layout, {
    title: 'Page Title',
    content: text,
    cssContent: cssContent,
    headerContent: headerContent,
    footerContent: footerContent,
  });
  return rendered;
}

layouts['layout1.html'] = `

  
    
    
    
  
  
    

      

        <%- headerContent %>
      
      

        <%- content %>
      
      

        <%- footerContent %>
      
    
  

`;

import http from 'http';
import url from 'url';

var server;
var content;

export function createServer() {
  if (server) throw new Error("Server already started");
  server = http.createServer(requestHandler);
  server.listen(0, "127.0.0.1");
}

export function newContent(text) {
  content = text;
  return genurl('content');
}

export function currentContent() {
  return content;
}

function genurl(pathname) {
  const url2preview = url.format({
    protocol: 'http',
    hostname: server.address().address,
    port: server.address().port,
    pathname: pathname
  });
  return url2preview;
}

function requestHandler(req, res) {
  try {
    res.writeHead(200, {
      'Content-Type': 'text/html',
      'Content-Length': content.length
    });
    res.end(content);
  } catch(err) {
    res.writeHead(500, {
      'Content-Type': 'text/plain'
    });
    res.end(err.stack);
  }
}