vue?codemirror實(shí)現(xiàn)在線代碼編譯器效果

更新時(shí)間：2021年12月30日 17:09:00 作者：Silent丿丶黑羽

這篇文章主要介紹了vue-codemirror實(shí)現(xiàn)在線代碼編譯器?,本文給大家介紹的非常詳細(xì)，對(duì)大家的學(xué)習(xí)或工作具有一定的參考借鑒價(jià)值，需要的朋友可以參考下

前言

如果我們想在Web端實(shí)現(xiàn)在線代碼編譯的效果，那么需要使用組件vue-codemirror，他是將CodeMirror進(jìn)行了再次封裝

支持代碼高亮
62種主題顏色，例如monokai等等
支持json, sql, javascript，css，xml, html，yaml, markdown, python編輯模式，默認(rèn)為 json
支持快速搜索
支持自動(dòng)補(bǔ)全提示
支持自動(dòng)匹配括號(hào)

環(huán)境準(zhǔn)備

npm install jshint
npm install jsonlint
npm install script-loader
npm install vue-codemirror

封裝組件

我們可以在項(xiàng)目中的components中將vue-codemirror進(jìn)行再次封裝

<template>
  <codemirror
    ref="myCm"
    v-model="editorValue"
    :options="cmOptions"
    @changes="onCmCodeChanges"
    @blur="onCmBlur"
    @keydown.native="onKeyDown"
    @mousedown.native="onMouseDown"
    @paste.native="OnPaste"
  >
  </codemirror>
</template>

<script>
import { codemirror } from "vue-codemirror";
import 'codemirror/keymap/sublime'
import "codemirror/mode/javascript/javascript.js";
import "codemirror/mode/xml/xml.js";
import "codemirror/mode/htmlmixed/htmlmixed.js";
import "codemirror/mode/css/css.js";
import "codemirror/mode/yaml/yaml.js";
import "codemirror/mode/sql/sql.js";
import "codemirror/mode/python/python.js";
import "codemirror/mode/markdown/markdown.js";
import "codemirror/addon/hint/show-hint.css";
import "codemirror/addon/hint/show-hint.js";
import "codemirror/addon/hint/javascript-hint.js";
import "codemirror/addon/hint/xml-hint.js";
import "codemirror/addon/hint/css-hint.js";
import "codemirror/addon/hint/html-hint.js";
import "codemirror/addon/hint/sql-hint.js";
import "codemirror/addon/hint/anyword-hint.js";
import "codemirror/addon/lint/lint.css";
import "codemirror/addon/lint/lint.js";
import "codemirror/addon/lint/json-lint";
import 'codemirror/addon/selection/active-line'
import "codemirror/addon/hint/show-hint.js";
import "codemirror/addon/hint/anyword-hint.js";
require("script-loader!jsonlint");
import "codemirror/addon/lint/javascript-lint.js";
import "codemirror/addon/fold/foldcode.js";
import "codemirror/addon/fold/foldgutter.js";
import "codemirror/addon/fold/foldgutter.css";
import "codemirror/addon/fold/brace-fold.js";
import "codemirror/addon/fold/xml-fold.js";
import "codemirror/addon/fold/comment-fold.js";
import "codemirror/addon/fold/markdown-fold.js";
import "codemirror/addon/fold/indent-fold.js";
import "codemirror/addon/edit/closebrackets.js";
import "codemirror/addon/edit/closetag.js";
import "codemirror/addon/edit/matchtags.js";
import "codemirror/addon/edit/matchbrackets.js";
import "codemirror/addon/selection/active-line.js";
import "codemirror/addon/search/jump-to-line.js";
import "codemirror/addon/dialog/dialog.js";
import "codemirror/addon/dialog/dialog.css";
import "codemirror/addon/search/searchcursor.js";
import "codemirror/addon/search/search.js";
import "codemirror/addon/display/autorefresh.js";
import "codemirror/addon/selection/mark-selection.js";
import "codemirror/addon/search/match-highlighter.js";
export default {
  name: "index",
  components: {codemirror},
  props: ["cmTheme", "cmMode", "cmIndentUnit", "autoFormatJson"],
  data() {
    return {
      editorValue: '{}',
      cmOptions: {
        theme: !this.cmTheme || this.cmTheme === "default" ? "default" : this.cmTheme,  // 主題
        mode: !this.cmMode || this.cmMode === "default" ? "application/json" : this.cmMode,  // 代碼格式
        tabSize: 4,  // tab的空格個(gè)數(shù)
        indentUnit: !this.cmIndentUnit ? 2 : this.cmIndentUnit,  // 一個(gè)塊（編輯語(yǔ)言中的含義）應(yīng)縮進(jìn)多少個(gè)空格
        autocorrect: true,  // 自動(dòng)更正
        spellcheck: true,  // 拼寫(xiě)檢查
        lint: true,  // 檢查格式
        lineNumbers: true,  //是否顯示行數(shù)
        lineWrapping: true, //是否自動(dòng)換行
        styleActiveLine: true,  //line選擇是是否高亮
        keyMap: 'sublime',  // sublime編輯器效果
        matchBrackets: true,  //括號(hào)匹配
        autoCloseBrackets: true,  // 在鍵入時(shí)將自動(dòng)關(guān)閉括號(hào)和引號(hào)
        matchTags: { bothTags: true },  // 將突出顯示光標(biāo)周?chē)臉?biāo)簽
        foldGutter: true,  // 可將對(duì)象折疊，與下面的gutters一起使用
        gutters: [
          "CodeMirror-lint-markers",
          "CodeMirror-linenumbers",
          "CodeMirror-foldgutter"
        ],
        highlightSelectionMatches: {
          minChars: 2,
          style: "matchhighlight",
          showToken: true
        },
      },
      enableAutoFormatJson: this.autoFormatJson == null ? true : this.autoFormatJson,  // json編輯模式下，輸入框失去焦點(diǎn)時(shí)是否自動(dòng)格式化，true 開(kāi)啟， false 關(guān)閉
    }
  },
  created() {
    try {
      if (!this.editorValue) {
        this.cmOptions.lint = false;
        return;
      }
      if (this.cmOptions.mode === "application/json") {
        if (!this.enableAutoFormatJson) {
          return;
        }
        this.editorValue = this.formatStrInJson(this.editorValue);
      }
    } catch (e) {
      console.log("初始化codemirror出錯(cuò)：" + e);
    }
  },
  methods: {
    resetLint() {
      if (!this.$refs.myCm.codemirror.getValue()) {
        this.$nextTick(() => {
          this.$refs.myCm.codemirror.setOption("lint", false);
        });
        return;
      }
      this.$refs.myCm.codemirror.setOption("lint", false);
      this.$nextTick(() => {
        this.$refs.myCm.codemirror.setOption("lint", true);
      });
    },
    // 格式化字符串為json格式字符串
    formatStrInJson(strValue) {
      return JSON.stringify(
        JSON.parse(strValue),
        null,
        this.cmIndentUnit
      );
    },
    onCmCodeChanges(cm, changes) {
      this.editorValue = cm.getValue();
      this.resetLint();
    },
    // 失去焦點(diǎn)時(shí)處理函數(shù)
    onCmBlur(cm, event) {
      try {
        let editorValue = cm.getValue();
        if (this.cmOptions.mode === "application/json" && editorValue) {
          if (!this.enableAutoFormatJson) {
            return;
          }
          this.editorValue = this.formatStrInJson(editorValue);
        }
      } catch (e) {
        // 啥也不做
      }
    },
    // 按下鍵盤(pán)事件處理函數(shù)
    onKeyDown(event) {
      const keyCode = event.keyCode || event.which || event.charCode;
      const keyCombination =
          event.ctrlKey || event.altKey || event.metaKey;
      if (!keyCombination && keyCode > 64 && keyCode < 123) {
        this.$refs.myCm.codemirror.showHint({ completeSingle: false });
      }
    },
    // 按下鼠標(biāo)時(shí)事件處理函數(shù)
    onMouseDown(event) {
      this.$refs.myCm.codemirror.closeHint();
    },
    // 黏貼事件處理函數(shù)
    OnPaste(event) {
      if (this.cmOptions.mode === "application/json") {
        try {
          this.editorValue = this.formatStrInJson(this.editorValue);
        } catch (e) {
          // 啥都不做
        }
      }
    },
  }
}
</script>

<style scoped>

</style>

此組件默認(rèn)配置了json編譯器，cmOptions中是代碼編譯器的配置項(xiàng)，需要額外的功能也可以去看官方文檔配置
接下來(lái)看展示效果

可以看到我們輸入了json格式的字符串，即使格式不正確，會(huì)給我們錯(cuò)誤提示，并且也會(huì)給我們自動(dòng)格式化

python編譯器

我們封裝的組件默認(rèn)是json編譯器，如果我們想使用其他語(yǔ)言，也很簡(jiǎn)單，只需要導(dǎo)入其他語(yǔ)言的mode

<template>
  <div>
    <el-button type="primary" icon="el-icon-circle-check-outline" @click="handleConfirm" round>
      點(diǎn)擊保存
    </el-button>
    <el-button icon="el-icon-caret-right" type="info" @click="handleRunCode" round>
      在線運(yùn)行
    </el-button>
  <code-editor
    :cmTheme="cmTheme"
    :cmMode="cmMode"
  >
  </code-editor>
  </div>
</template>

<script>
import codeEditor from '@/components/CodeEditor/index'
import 'codemirror/theme/monokai.css'  // 導(dǎo)入monokai主題
import 'codemirror/mode/python/python.js'  // 導(dǎo)入python
export default {
  name: "index",
  components: {
    codeEditor
  },
  data() {
    return {
      cmTheme: "monokai",
      cmMode: "python",
    }
  },
  methods: {
    handleConfirm() {},
    handleRunCode() {}
  }
}
</script>

<style>
.CodeMirror {
  position: relative;
  height: 100vh;
  overflow: hidden;
  margin-top: 10px;
}
</style>
<style lang="scss" scoped>
</style>

效果如下