一、背景
在后端管理界面中,有時(shí)候我們需要能夠?qū)⒁恍┡渲么a能夠在代碼中進(jìn)行配置,如果用普通的TextArea可視化不是很好,codemirror算是業(yè)界在Js里面做的很不錯(cuò)的一個(gè)代碼編輯框,可以支持目前能見(jiàn)到的所有的代碼的風(fēng)格。但是在antdesign中的引用卻很少,經(jīng)過(guò)一些摸索,這里進(jìn)行總結(jié)下
官方鏈接:
https://www.npmjs.com/package/react-codemirror2
該文章是從我的個(gè)人文檔遷移過(guò)來(lái),平常偶爾會(huì)繼續(xù)更新,可以點(diǎn)擊這里查看最新:https://www.yuque.com/simonalong/jishu/dnlsiy
二、前端引入
1.安裝
我們這里使用開源的將codemirror跟react結(jié)合的一個(gè)框架項(xiàng)目,在前端項(xiàng)目根目錄下安裝該插件
npm install react-codemirror2 codemirror --save
2.antdesign項(xiàng)目引入
// 引入codemirror封裝
import {UnControlled as CodeMirror} from 'react-codemirror2'
import 'codemirror/lib/codemirror.css';
// 主題風(fēng)格
import 'codemirror/theme/solarized.css';
// 代碼模式,clike是包含java,c++等模式的
import 'codemirror/mode/clike/clike';
3.使用
<CodeMirror
value={record.data}
options={{
mode: 'groovy',
theme: 'solarized light',
lineNumbers: true,
}}
// 這個(gè)必須加上,否則在一些情況下,第二次打開就會(huì)有問(wèn)題
onBeforeChange={(editor, data, value) => {
console.log("onBeforeChange fresh")
console.log(JSON.stringify(data));
console.log(JSON.stringify(value));
}}
/* HERE: pick out only the value. and might as well get name. */
/>
4.查看界面效果

三、注意事項(xiàng)
其中react-codemirror2里面有個(gè)問(wèn)題就是在將<CodeMirror>這個(gè)放到表單中的時(shí)候,onBeforeChange函數(shù)(如上所示)必須添加,否則會(huì)報(bào)錯(cuò),因?yàn)閍ntdesign的那個(gè)對(duì)參數(shù)值修改的函數(shù)采用的是onChange,但是CodeMirror采用的是onBeforeChange,所以,必須再封裝一層,如上,這樣才不會(huì)報(bào)錯(cuò),這個(gè)問(wèn)題可看這里
四、擴(kuò)展
以上是基本的用法,但是我們有時(shí)候還有可能需要使用更多的代碼風(fēng)格,以及更多的不同的代碼主題,還有代碼的折疊凳這些功能,應(yīng)該怎么辦呢,可以直接看codeMirro官網(wǎng),不過(guò)里面東西太多,不好分類,加上最近自己找的一些東西
1.theme風(fēng)格
https://codemirror.net/demo/theme.html
引用方式:
import 'codemirror/theme/solarized.css';
2.代碼模式
https://codemirror.net/mode/
其中常見(jiàn)的代碼風(fēng)格:c,c++,c#,java,scala,object-c等如下的這么幾個(gè)都是位于clike包中
text/x-csrc(C),text/x-c++src(C++),text/x-java(Java),text/x-csharp(C#),text/x-objectivec(Objective-C),text/x-scala(Scala),text/x-vertexx-shader/x-fragment(shader programs),text/x-squirrel(Squirrel) andtext/x-ceylon(Ceylon)
引用:
import 'codemirror/mode/clike/clike';
3.其他配置
其他的一些配置,可以見(jiàn)官網(wǎng)的配置這里
https://codemirror.net/doc/manual.html#config
但是這里全是英文,對(duì)英文不是很好的同學(xué)還是有點(diǎn)吃力(自己也是哈哈),下面列舉一些常見(jiàn)的一些常見(jiàn)的中文鏈接
https://www.jishux.com/p/1fa59c3b47afc25f
http://www.fdlly.com/p/1730562672.html
https://www.cnblogs.com/Angies/p/7830948.html
五、問(wèn)題
1.Cannot read property 'length' of undefined
Uncaught TypeError: Cannot read property 'length' of undefined
at changeEnd (codemirror.js:4601)
at adjustForChange (codemirror.js:4608)
at computeSelAfterChange (codemirror.js:4619)
at makeChangeInner (codemirror.js:5247)
at CodeMirror.makeChange (codemirror.js:5241)
at codemirror.js:3906
at makeChange (codemirror.js:5225)
at replaceRange (codemirror.js:5452)
at Doc.replaceRange (codemirror.js:6121)
at CodeMirror.replaceRange (codemirror.js:9695)
at UnControlled.hydrate (index.js:528)
at UnControlled.componentWillReceiveProps (index.js:607)
at callComponentWillReceiveProps (react-dom.development.js:12708)
at updateClassInstance (react-dom.development.js:12918)
at updateClassComponent (react-dom.development.js:14487)
at beginWork (react-dom.development.js:15335)
at performUnitOfWork (react-dom.development.js:18150)
at workLoop (react-dom.development.js:18190)
at renderRoot (react-dom.development.js:18276)
at performWorkOnRoot (react-dom.development.js:19165)
at performWork (react-dom.development.js:19077)
at performSyncWork (react-dom.development.js:19051)
at interactiveUpdates$1 (react-dom.development.js:19320)
at interactiveUpdates (react-dom.development.js:2169)
at dispatchInteractiveEvent (react-dom.development.js:4880)
有問(wèn)題源碼
<Col lg={24}>
<FormItem labelCol={{ span: 5 }} wrapperCol={{ span: 24 }} label="數(shù)據(jù):">
{form.getFieldDecorator('data', {
initialValue: drawerRecord.data,
rules: [{ required: true, message: '請(qǐng)輸入數(shù)據(jù)!' }],
})(
<CodeMirror
options={{
mode: 'text/x-java',
theme: 'solarized light',
lineNumbers: true,
lineWrapping: true,
}}
// onBeforeChange={(editor, data, value) => {
// console.log("onBeforeChange fresh")
// console.log(JSON.stringify(data));
// console.log(JSON.stringify(value));
// }}
/>
)}
</FormItem>
</Col>
添加函數(shù)onBeforeChange就可以了
六、參考
antdesign的codeMirror
https://github.com/ZiQiangWang/react-cmirror
https://github.com/codemirror/codemirror
groovy:風(fēng)格:https://codemirror.net/mode/groovy/index.html
中文配置參考:
https://www.jishux.com/p/1fa59c3b47afc25f
http://www.fdlly.com/p/1730562672.html
https://www.cnblogs.com/Angies/p/7830948.html
http://www.itdecent.cn/p/4d5ef6808da7
json:代碼支持
https://www.cnblogs.com/Angies/p/7830948.html