vue-codemirror

CodeMirror(6) component for Vue(3).

vue-codemirror v5/v6 has been released. This is a new version based on CodeMirror@6 and is available to Vue3 only. Since CodeMirror@6 is developed with native ES Modules, the new version will no longer support direct browser references to UMD modules. In short, the new version is ⚠️ completely NOT compatible with previous versions. If you wish to continue using Vue2 or a lower version of CodeMirror, please refer to the legacy versions below.

This example site contains most of what you want.

Legacy version

• examples (Vue2)
• [email protected] (Vue2 / CodeMirror5)

Documentation

• CodeMirror6 Guide
• CodeMirror6 APIs
• CodeMirror6 Examples
• CodeMirror6 Example: Writing a Language Package
• CodeMirror6 Example: Styling
• CodeMirror Forum

CodeMirror packages

• CodeMirror6 Languages
• CodeMirror6 Themes

Usage

Install

yarn add codemirror vue-codemirror

npm install codemirror vue-codemirror --save

Depending on your actual needs, you may need to install more CodeMirror packages

# CodeMirror languages...
yarn add @codemirror/lang-html
yarn add @codemirror/lang-json
yarn add @codemirror/lang-javascript

# CodeMirror themes...
yarn add @codemirror/theme-one-dark

# more CodeMirror packages...

If you need import API/interface from codemirror, you need to make codemirror explicitly dependent in your package.json

e.g.

"dependencies": {
  "@codemirror/state": "6.x"
}

import { EditorState } from '@codemirror/state'

Local component

<template>
  <codemirror
    v-model="code"
    placeholder="Code goes here..."
    :style="{ height: '400px' }"
    :autofocus="true"
    :indent-with-tab="true"
    :tab-size="2"
    :extensions="extensions"
    @ready="handleReady"
    @change="log('change', $event)"
    @focus="log('focus', $event)"
    @blur="log('blur', $event)"
  />
</template>

<script>
  import { defineComponent } from 'vue'
  import { Codemirror } from 'vue-codemirror'
  import { javascript } from '@codemirror/lang-javascript'
  import { oneDark } from '@codemirror/theme-one-dark'

  export default defineComponent({
    components: {
      Codemirror
    },
    setup() {
      const code = ref(`console.log('Hello, world!')`)
      const extensions = [javascript(), oneDark]

      // Codemirror EditorView instance ref
      const view = shallowRef()
      const handleReady = (payload) => {
        view.value = payload.view
      }

      // Status is available at all times via Codemirror EditorView
      const getCodemirrorStates = () => {
        const state = view.value.state
        const ranges = state.selection.ranges
        const selected = ranges.reduce((r, range) => r + range.to - range.from, 0)
        const cursor = ranges[0].anchor
        const length = state.doc.length
        const lines = state.doc.lines
        // more state info ...
        // return ...
      }

      return {
        code,
        extensions,
        handleReady,
        log: console.log
      }
    }
  })
</script>

Global component

import { createApp } from 'vue'
import { basicSetup } from 'codemirror'
import VueCodemirror from 'vue-codemirror'

const app = createApp()

app.use(VueCodemirror, {
  // optional default global options
  autofocus: true,
  disabled: false,
  indentWithTab: true,
  tabSize: 2,
  placeholder: 'Code goes here...',
  extensions: [basicSetup]
  // ...
})

Component Props

| prop | description | type | default | | :------------ | :------------------------------------------------------------------------------------- | :----------------------- | :------ | | modelValue | The input values accepted by the component also support two-way binding. | String | '' | | autofocus | Focus editor immediately after mounted. | Boolean | false | | disabled | Disable input behavior and disable change state. | Boolean | false | | indentWithTab | Bind keyboard Tab key event. | Boolean | true | | tabSize | Specify the indent when the Tab key is pressed. | Number | 2 | | placeholder | Display when empty. | String | '' | | style | The CSS style object that acts on the CodeMirror itself. | Object | {} | | phrases | Codemirror internationalization phrases. | Object | {} | | autoDestroy | Auto destroy the CodeMirror instance before the component unmount. | Boolean | true | | extensions | Passed to CodeMirror EditorState.create({ extensions }) | Extension | [] | | selection | Passed to CodeMirror EditorState.create({ selection }) | EditorSelection | - | | root | Passed to CodeMirror new EditorView({ root }) | ShadowRoot \| Document | - |

Component Events

| event | description | params | | :------------------ | :------------------------------------------------------ | :------------------------------------------------------------------------------- | | update:modelValue | Only when the CodeMirror content (doc) has changed. | (value: string, viewUpdate: ViewUpdate) | | change | ditto | ditto | | update | When any state of CodeMirror changes. | (viewUpdate: ViewUpdate) | | focus | When CodeMirror focused. | (viewUpdate: ViewUpdate) | | blur | When CodeMirror blurred. | (viewUpdate: ViewUpdate) | | ready | When edirot component mounted. | (payload: { view: EditorView; state: EditorState; container: HTMLDivElement }) |

Basic Setup

The basic-setup extension is integrated by default in the vue-codemirror configuration and is intended as a handy helper to quickly set up CodeMirror without having to install and import a lot of standalone packages. If you want to override the default behavior of the config, just pass the empty array when installing the component globally.

app.use(VueCodemirror, {
  // keep the global default extensions empty
  extensions: []
})

Changelog

Detailed changes for each release are documented in the release notes.

License

Licensed under the MIT License.