66 lines
1.9 KiB
JavaScript
66 lines
1.9 KiB
JavaScript
import React, { Component } from 'react'
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import cm from 'codemirror'
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import { getKey, isCtrlKey } from '../util/keys'
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if (typeof window !== 'undefined') {
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require('codemirror/mode/markdown/markdown')
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}
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export default class CodeMirror extends Component {
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handleChange = () => {
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if (!this.editor) return
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const value = this.editor.getValue()
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if (value !== this.props.value) {
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this.props.onChange && this.props.onChange(value)
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if (this.editor.getValue() !== this.props.value) {
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if (this.state.isControlled) {
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this.editor.setValue(this.props.value)
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} else {
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this.props.value = value
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}
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}
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}
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}
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checkSubmit = (cm, e) => {
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const key = getKey(e)
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if (isCtrlKey(key)) {
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this.ctrlKey = true
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} else if (key === 13 && this.ctrlKey) {
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this.props.onSubmit()
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}
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}
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handleKeyUp = (cm, e) => {
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if (isCtrlKey(getKey(e))) this.ctrlKey = false
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}
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componentDidMount() {
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if (typeof window === 'undefined') return
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this.editor = cm.fromTextArea(this.textarea, this.props.options)
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this.editor.on('change', this.handleChange)
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if (typeof this.props.onSubmit === 'function') {
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this.editor.on('keydown', this.checkSubmit)
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this.editor.on('keyup', this.handleKeyUp)
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this.setupSubmitKey = true
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}
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}
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componentWillUnmount() {
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if (this.setupSubmitKey) {
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this.editor.off('keydown', this.checkSubmit)
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this.editor.off('keyup', this.handleKeyUp)
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this.setupSubmitKey = false
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}
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}
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componentDidUpdate() {
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if (!this.editor || !this.props.value) return
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if (this.editor.getValue() !== this.props.value) {
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this.editor.setValue(this.props.value)
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}
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}
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render() {
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const { value, className, onChange } = this.props
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return (
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<div {...{ className }}>
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<textarea {...{ value, onChange }} ref={el => (this.textarea = el)} />
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</div>
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)
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}
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}
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