React中使用Vditor自定义图片详解

Z时代
2024-01-10
分类：IT

安装

npm install vditor -s

引用

导入依赖包


import Vditor from "vditor";

导入样式


import "vditor/src/assets/scss/index.scss";

使用示例


export default class Vditor extends Component {
 constructor(props) {
   super(props);
   this.state = {
    editValue: ""
   };
 }
 componentDidMount = () => {
  //组件挂载完成之后调用 注意一定要在组件挂载完成之后调用 否则会找不到注入的DOM
  this.createVidtor({ value: this.state.editValue });
 }
 //创建编辑器 下面会详解
 createVidtor = params => {
   let { value } = params;
   value = value ? value : " ";
   let that = this;
   const vditor = new Vditor("vditor", {
     height: 800,
     mode: "ir", //及时渲染模式
     placeholder: "React Vditor",
     toolbar: [
       "emoji",
       "headings",
       "bold",
       "italic",
       "strike",
       "link",
       "|",
       "list",
       "ordered-list",
       "check",
       "outdent",
       "indent",
       "|",
       "quote",
       "line",
       "code",
       "inline-code",
       "insert-before",
       "insert-after",
       "|",
       "upload",
       "table",
       "|",
       "undo",
       "redo",
       "|",
       "fullscreen",
       "edit-mode",
       {
         name: "more",
         toolbar: [
           "both",
           "code-theme",
           "content-theme",
           "export",
           "outline",
           "preview",
           "devtools",
           "info",
           "help"
         ]
       },
       "|",
       {
         hotkey: "⌘-S",
         name: "save",
         tipPosition: "s",
         tip: "保存",
         className: "right",
         icon: `<img style="height: 16px" src='https://img.58cdn.com.cn/escstatic/docs/imgUpload/idocs/save.svg'/>`,
         click() {
           that.saveDoc();
         }
       },
       {
         hotkey: "",
         name: "publish",
         tipPosition: "s",
         tip: "发布文章",
         className: "right",
         icon: `<img style="height: 16px" src='https://img.58cdn.com.cn/escstatic/docs/imgUpload/idocs/publish.svg'/>`,
         click() {
           that.publishDoc();
         }
       }
     ],
     after() {
       vditor.setValue(value);
     },
     blur() {
       that.saveDoc();
     },
     upload: {
       accept: "image/*",
       multiple: false,
       filename(name) {
         return name
           .replace(/[^(a-zA-Z0-9\u4e00-\u9fa5\.)]/g, "")
           .replace(/[\?\\/:|<>\*\[\]\(\)\$%\{\}@~]/g, "")
           .replace("/\\s/g", "");
       },
       handler(files) {
         function callback(path) {
           let name = files[0] && files[0].name;
           let succFileText = "";
           if (vditor && vditor.vditor.currentMode === "wysiwyg") {
             succFileText += `\n <img alt=${name} src="${path}">`;
           } else {
             succFileText += ` \n![${name}](${path})`;
           }
           document.execCommand("insertHTML", false, succFileText);
         }
         that.handleImageUpload(files, callback);
       },
       url(files) {
         that.handleImageUpload(files);
       }
     }
   });
   this.vditor = vditor;
   return vditor;
 };
 //首先需要在render里面注入DOM，可自定义注入DOM的ID，初始化编辑器的时候使用自定义的ID即可
 render() {
  <div className="editorWrap">
    <div id="vditor" />
  </div>
 }
}

示例：

功能使用

新建对象


const vditor = new Vditor("vditor", ...option);

新建对象时第一个参数ID，要对应上再render里面注入的ID

option参数

tip：只列举一下常用参数，其他的参数请参照官方API

参数	说明
height	配置编辑器高度
mode	编辑器模式 wysiwyg：所见即所得2 ir:及时渲染 sv：分屏模式
placeholder	占位符
toolbar	工具栏

Tip：如果要自定义工具栏的话，一定要加上默认的工具栏，不然只展示自定义的了

默认工具栏

tip：此为源码里面copy 不用更改可直接使用，官方已定义好了快捷键和功能

toolbar: [

"emoji",

"headings",

"bold",

"italic",

"strike",

"link",

"|",

"list",

"ordered-list",

"check",

"outdent",

"indent",

"|",

"quote",

"line",

"code",

"inline-code",

"insert-before",

"insert-after",

"|",

"upload",

"record",

"table",

"|",

"undo",

"redo",

"|",

"fullscreen",

"edit-mode",

{

name: "more",

toolbar: [

"both",

"code-theme",

"content-theme",

"export",

"outline",

"preview",

"devtools",

"info",

"help",

}]

对应工具栏展示：

自定义按钮


let that = this;
const vditor = new Vditor("vditor", {
  toolbar: [
    {
      hotkey: "⌘-S",
      name: "save",
      tipPosition: "s",
      tip: "保存",
      className: "right",
      icon: `<img style="height: 16px" src='https://img.58cdn.com.cn/escstatic/docs/imgUpload/idocs/save.svg'/>`,
      click() {
        that.saveDoc();
      }
    },
    {
      hotkey: "",
      name: "publish",
      tipPosition: "s",
      tip: "发布文章",
      className: "right",
      icon: `<img style="height: 16px" src='https://img.58cdn.com.cn/escstatic/docs/imgUpload/idocs/publish.svg'/>`,
      click() {
        that.publishDoc();
      }
    }
  ]
});
//tip：在调用本类封装的方法时提前把this赋值给其他方法内的变量，在Vditor内部改变了this指向

参数	说明
hotkey	热键配置
name	功能区分（唯一性）
tip	悬浮提示
className	UI展示 right靠右
icon	按钮图标
click	点击事件

示例：

获取值


saveDoc = () => {
 //在初始化时已经把vditor赋值到this对象上 可直接通过getValue方法获取当前编辑器的值
  let mdValue = this.vditor && this.vditor.getValue();
 //获取完值业务保存就行 这里不再详细写本人的保存方法了
 ...
}

赋值


let { value } = params;
value = value ? value : " ";
//如果是空值的话 最好给一个空格 以免编辑器初始化时报错
const vditor = new Vditor("vditor", {
 // value: value,
 after() {
   vditor.setValue(value);
 }
});
//tip：虽说官方也提供value直接赋值 但是在React里面不生效，就需要在after里面去调用setValue来完成赋值

自定义图片上传


const vditor = new Vditor("vditor", {
 upload: {
   accept: "image/*",
   multiple: false,
   filename(name) {
     return name
       .replace(/[^(a-zA-Z0-9\u4e00-\u9fa5\.)]/g, "")
       .replace(/[\?\\/:|<>\*\[\]\(\)\$%\{\}@~]/g, "")
       .replace("/\\s/g", "");
   },
   handler(files) {
     function callback(path) {
       let name = files[0] && files[0].name;
       let succFileText = "";
       if (vditor && vditor.vditor.currentMode === "wysiwyg") {
         succFileText += `\n <img alt=${name} src="${path}">`;
       } else {
         succFileText += ` \n![${name}](${path})`;
       }
       document.execCommand("insertHTML", false, succFileText);
     }
     that.handleImageUpload(files, callback);
   },
   url(files, callback) {
     that.handleImageUpload(files, callback);
   }
 }
});
//此接口里面调用的是自己的图片上传 业务方自行实现
handleImageUpload = (file, callback) => {
  const reader = new FileReader();
  let formdata = new FormData();
  formdata.append("files", file[0]);
  reader.onload = () => {
    // setTimeout 模拟异步上传图片
    // 当异步上传获取图片地址后，执行callback回调（参数为imageUrl字符串），即可将图片地址写入markdown
    new Promise(resolve => {
      this.props.dispatch({
        type: "docManager/imageUpload",
        payload: { resolve, username: myInfo.userId, formdata }
      });
    }).then(res => {
      let imgurl = res.result.path;
      callback(imgurl);
    });
  };
  reader.readAsDataURL(file[0]);
};

参数	说明
accept	接收文件类型（我这边只做了图片上传）
multiple	是否多选
filename	格式化文件名
handler	点击数触发方法
url	配置此方法时可实现图片粘贴并上传

上传完成后接口返回的CDN地址

上传完成后处理


handler(files) {
  function callback(path) {
    let name = files[0] && files[0].name;
    let succFileText = "";
    //上传完成获取当前编辑器模式 根据不同模式拼接不同的展示标签
    if (vditor && vditor.vditor.currentMode === "wysiwyg") {
      succFileText += `\n <img alt=${name} src="${path}">`;
    } else {
      succFileText += ` \n![${name}](${path})`;
    }
    //拼接完直接插入到鼠标选中位置
    document.execCommand("insertHTML", false, succFileText);
  }
  that.handleImageUpload(files, callback);
}