编辑器中SQL关键字提示

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编辑器中SQL关键字提示

前言

官方 https://github.com/surmon-china/vue-codemirror/tree/v4.0.1

安装依赖

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npm install --save sql-formatter@2.3.3
npm install --save vue-codemirror@4.0.1
npm install --save vue-highlightjs

注意

需要注意vue-codemirror不能选取新版本，新版本需要vue3支持

自定义组件

SqlEditor.vue

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<template>
  <div>
    <textarea ref="mycode" :value="sqlValue"> </textarea>
  </div>
</template>
<script>
import "codemirror/theme/ambiance.css";
import "codemirror/lib/codemirror.css";
import "codemirror/addon/hint/show-hint.css";
import CodeMirror from "codemirror";
import "codemirror/addon/edit/matchbrackets";
import "codemirror/addon/selection/active-line";
import "codemirror/mode/sql/sql";
import "codemirror/addon/hint/show-hint";
import "codemirror/addon/hint/sql-hint";
export default {
  data() {
    return {
      editor: null,
    };
  },
  props: {
    sqlValue: {
      type: String,
      default: "",
    },
    sqlStyle: {
      type: String,
      default: "default",
    },
    readOnly: {
      type: [Boolean, String],
    },
  },
  watch: {
    newVal() {
      if (this.editor) {
        this.$emit("changeTextarea", this.editor.getValue());
      }
    },
  },
  computed: {
    newVal() {
      if (this.editor) {
        return this.editor.getValue();
      } else {
        return "";
      }
    },
  },
  mounted() {
    let mime = "text/x-mariadb";
    this.editor = CodeMirror.fromTextArea(this.$refs.mycode, {
      value: this.sqlValue,
      mode: mime, //选择对应代码编辑器的语言，我这边选的是数据库，根据个人情况自行设置即可
      indentWithTabs: true,
      smartIndent: true,
      lineNumbers: true,
      matchBrackets: true,
      cursorHeight: 1,
      lineWrapping: true,
      readOnly: this.readOnly,
      theme: this.sqlStyle, //ambiance
      // autofocus: true,
      extraKeys: { Ctrl: "autocomplete" }, //自定义快捷键
      hintOptions: {
        //自定义提示选项
        // 当匹配只有一项的时候是否自动补全
        completeSingle: false,
      },
    });
    //代码自动提示功能，记住使用cursorActivity事件不要使用change事件，这是一个坑，那样页面直接会卡死
    this.editor.on("inputRead", () => {
      this.editor.showHint();
    });
  },
  methods: {
    setVal() {
      if (this.editor) {
        if (this.sqlValue === "") {
          this.editor.setValue("");
        } else {
          this.editor.setValue(this.sqlValue);
        }
      }
    },
  },
};
</script>
<style>
.CodeMirror {
  color: black;
  direction: ltr;
  line-height: 22px;
  text-align: left;
  border: 1px solid #f3f3f3;
}
.CodeMirror-hints {
  z-index: 9999 !important;
}
</style>

引用组件

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<template>
  <div class="home">
    <SqlEditor
      ref="sqleditor"
      :sql-value="mForm.mSqlStr"
      @changeTextarea="changeTextarea($event)"
    />
    <input
      type="button"
      class="sql-btn"
      @click="formaterSql(mForm.mSqlStr)"
      value="格式化"
    />
  </div>
</template>
<script>
import sqlFormatter from "sql-formatter";
import SqlEditor from "@/components/SqlEditor";
export default {
  components: {
    SqlEditor,
  },
  data() {
    return {
      mForm: {
        mSqlStr: "",
      },
    };
  },
  methods: {
    changeTextarea(obj) {
      this.$set(this.mForm, "mSqlStr", obj);
    },
    formaterSql() {
      let sqleditor = this.$refs.sqleditor;
      sqleditor.editor.setValue(
        sqlFormatter.format(sqleditor.editor.getValue())
      );
    },
  },
};
</script>
<style>
.home {
  text-align: left;
}

.sql-btn {
  margin-top: 10px;
  cursor: pointer;
}
</style>

效果

image-20230921180130222