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React中使用Vditor自定义图片详解

2020-12-25 10:13:11 作者：浅夏晴空

这篇文章主要介绍了React中使用Vditor自定义图片详解，文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值，需要的朋友们下面随着小编来一起学习学习吧

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);
}

总结

以上是本人在接入vditor编辑器是的一些使用总结，更多相关React Vditor内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家！