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Files
Boostnote/browser/components/MarkdownEditor.js
2020-06-26 02:40:37 +02:00

444 lines
13 KiB
JavaScript

/* eslint-disable camelcase */
import PropTypes from 'prop-types'
import React from 'react'
import CSSModules from 'browser/lib/CSSModules'
import styles from './MarkdownEditor.styl'
import CodeEditor from 'browser/components/CodeEditor'
import MarkdownPreview from 'browser/components/MarkdownPreview'
import eventEmitter from 'browser/main/lib/eventEmitter'
import { findStorage } from 'browser/lib/findStorage'
import ConfigManager from 'browser/main/lib/ConfigManager'
import attachmentManagement from 'browser/main/lib/dataApi/attachmentManagement'
class MarkdownEditor extends React.Component {
constructor(props) {
super(props)
// char codes for ctrl + w
this.escapeFromEditor = [17, 87]
// ctrl + shift + ;
this.supportMdSelectionBold = [16, 17, 186]
this.state = {
status:
props.config.editor.switchPreview === 'RIGHTCLICK'
? props.config.editor.delfaultStatus
: 'CODE',
renderValue: props.value,
keyPressed: new Set(),
isLocked: props.isLocked
}
this.lockEditorCode = this.handleLockEditor.bind(this)
this.focusEditor = this.focusEditor.bind(this)
this.previewRef = React.createRef()
}
componentDidMount() {
this.value = this.refs.code.value
eventEmitter.on('editor:lock', this.lockEditorCode)
eventEmitter.on('editor:focus', this.focusEditor)
}
componentDidUpdate() {
this.value = this.refs.code.value
}
UNSAFE_componentWillReceiveProps(props) {
if (props.value !== this.props.value) {
this.queueRendering(props.value)
}
}
componentWillUnmount() {
this.cancelQueue()
eventEmitter.off('editor:lock', this.lockEditorCode)
eventEmitter.off('editor:focus', this.focusEditor)
}
focusEditor() {
this.setState(
{
status: 'CODE'
},
() => {
if (this.refs.code == null) {
return
}
this.refs.code.focus()
}
)
}
queueRendering(value) {
clearTimeout(this.renderTimer)
this.renderTimer = setTimeout(() => {
this.renderPreview(value)
}, 500)
}
cancelQueue() {
clearTimeout(this.renderTimer)
}
renderPreview(value) {
this.setState({
renderValue: value
})
}
setValue(value) {
this.refs.code.setValue(value)
}
handleChange(e) {
this.value = this.refs.code.value
this.props.onChange(e)
}
handleContextMenu(e) {
if (this.state.isLocked) return
const { config } = this.props
if (config.editor.switchPreview === 'RIGHTCLICK') {
const newStatus = this.state.status === 'PREVIEW' ? 'CODE' : 'PREVIEW'
this.setState(
{
status: newStatus
},
() => {
if (newStatus === 'CODE') {
this.refs.code.focus()
} else {
this.previewRef.current.focus()
}
eventEmitter.emit('topbar:togglelockbutton', this.state.status)
const newConfig = Object.assign({}, config)
newConfig.editor.delfaultStatus = newStatus
ConfigManager.set(newConfig)
}
)
}
}
handleBlur(e) {
if (this.state.isLocked) return
this.setState({ keyPressed: new Set() })
const { config } = this.props
if (
config.editor.switchPreview === 'BLUR' ||
(config.editor.switchPreview === 'DBL_CLICK' &&
this.state.status === 'CODE')
) {
const cursorPosition = this.refs.code.editor.getCursor()
this.setState(
{
status: 'PREVIEW'
},
() => {
this.previewRef.current.focus()
this.previewRef.current.scrollToRow(cursorPosition.line)
}
)
eventEmitter.emit('topbar:togglelockbutton', this.state.status)
}
}
handleDoubleClick(e) {
if (this.state.isLocked) return
this.setState({ keyPressed: new Set() })
const { config } = this.props
if (config.editor.switchPreview === 'DBL_CLICK') {
this.setState(
{
status: 'CODE'
},
() => {
this.refs.code.focus()
eventEmitter.emit('topbar:togglelockbutton', this.state.status)
}
)
}
}
handlePreviewMouseDown(e) {
this.previewMouseDownedAt = new Date()
}
handlePreviewMouseUp(e) {
const { config } = this.props
if (
config.editor.switchPreview === 'BLUR' &&
new Date() - this.previewMouseDownedAt < 200
) {
this.setState(
{
status: 'CODE'
},
() => {
this.refs.code.focus()
}
)
eventEmitter.emit('topbar:togglelockbutton', this.state.status)
}
}
handleCheckboxClick(e) {
e.preventDefault()
e.stopPropagation()
const idMatch = /checkbox-([0-9]+)/
const checkedMatch = /^(\s*>?)*\s*[+\-*] \[x]/i
const uncheckedMatch = /^(\s*>?)*\s*[+\-*] \[ ]/
const checkReplace = /\[x]/i
const uncheckReplace = /\[ ]/
if (idMatch.test(e.target.getAttribute('id'))) {
const lineIndex =
parseInt(e.target.getAttribute('id').match(idMatch)[1], 10) - 1
const lines = this.refs.code.value.split('\n')
const targetLine = lines[lineIndex]
let newLine = targetLine
if (targetLine.match(checkedMatch)) {
newLine = targetLine.replace(checkReplace, '[ ]')
}
if (targetLine.match(uncheckedMatch)) {
newLine = targetLine.replace(uncheckReplace, '[x]')
}
this.refs.code.setLineContent(lineIndex, newLine)
}
}
focus() {
if (this.state.status === 'PREVIEW') {
this.setState(
{
status: 'CODE'
},
() => {
this.refs.code.focus()
}
)
} else {
this.refs.code.focus()
}
eventEmitter.emit('topbar:togglelockbutton', this.state.status)
}
reload() {
this.refs.code.reload()
this.cancelQueue()
this.renderPreview(this.props.value)
}
handleKeyDown(e) {
const { config } = this.props
if (this.state.status !== 'CODE') return false
const keyPressed = this.state.keyPressed
keyPressed.add(e.keyCode)
this.setState({ keyPressed })
const isNoteHandlerKey = el => {
return keyPressed.has(el)
}
// These conditions are for ctrl-e and ctrl-w
if (
keyPressed.size === this.escapeFromEditor.length &&
!this.state.isLocked &&
this.state.status === 'CODE' &&
this.escapeFromEditor.every(isNoteHandlerKey)
) {
this.handleContextMenu()
if (config.editor.switchPreview === 'BLUR') document.activeElement.blur()
}
if (
keyPressed.size === this.supportMdSelectionBold.length &&
this.supportMdSelectionBold.every(isNoteHandlerKey)
) {
this.addMdAroundWord('**')
}
}
addMdAroundWord(mdElement) {
if (this.refs.code.editor.getSelection()) {
return this.addMdAroundSelection(mdElement)
}
const currentCaret = this.refs.code.editor.getCursor()
const word = this.refs.code.editor.findWordAt(currentCaret)
const cmDoc = this.refs.code.editor.getDoc()
cmDoc.replaceRange(mdElement, word.anchor)
cmDoc.replaceRange(mdElement, {
line: word.head.line,
ch: word.head.ch + mdElement.length
})
}
addMdAroundSelection(mdElement) {
this.refs.code.editor.replaceSelection(
`${mdElement}${this.refs.code.editor.getSelection()}${mdElement}`
)
}
handleDropImage(dropEvent) {
dropEvent.preventDefault()
const { storageKey, noteKey } = this.props
this.setState(
{
status: 'CODE'
},
() => {
this.refs.code.focus()
this.refs.code.editor.execCommand('goDocEnd')
this.refs.code.editor.execCommand('goLineEnd')
this.refs.code.editor.execCommand('newlineAndIndent')
attachmentManagement.handleAttachmentDrop(
this.refs.code,
storageKey,
noteKey,
dropEvent
)
}
)
}
handleKeyUp(e) {
const keyPressed = this.state.keyPressed
keyPressed.delete(e.keyCode)
this.setState({ keyPressed })
}
handleLockEditor() {
this.setState({ isLocked: !this.state.isLocked })
}
render() {
const {
className,
value,
config,
storageKey,
noteKey,
linesHighlighted,
RTL
} = this.props
let editorFontSize = parseInt(config.editor.fontSize, 10)
if (!(editorFontSize > 0 && editorFontSize < 101)) editorFontSize = 14
let editorIndentSize = parseInt(config.editor.indentSize, 10)
if (!(editorFontSize > 0 && editorFontSize < 132)) editorIndentSize = 4
const previewStyle = {}
if (this.props.ignorePreviewPointerEvents)
previewStyle.pointerEvents = 'none'
const storage = findStorage(storageKey)
return (
<div
className={
className == null ? 'MarkdownEditor' : `MarkdownEditor ${className}`
}
onContextMenu={e => this.handleContextMenu(e)}
tabIndex='-1'
onKeyDown={e => this.handleKeyDown(e)}
onKeyUp={e => this.handleKeyUp(e)}
>
<CodeEditor
styleName={
this.state.status === 'CODE' ? 'codeEditor' : 'codeEditor--hide'
}
ref='code'
mode='Boost Flavored Markdown'
value={value}
theme={config.editor.theme}
keyMap={config.editor.keyMap}
fontFamily={config.editor.fontFamily}
fontSize={editorFontSize}
indentType={config.editor.indentType}
indentSize={editorIndentSize}
enableRulers={config.editor.enableRulers}
rulers={config.editor.rulers}
displayLineNumbers={config.editor.displayLineNumbers}
lineWrapping
matchingPairs={config.editor.matchingPairs}
matchingCloseBefore={config.editor.matchingCloseBefore}
matchingTriples={config.editor.matchingTriples}
explodingPairs={config.editor.explodingPairs}
codeBlockMatchingPairs={config.editor.codeBlockMatchingPairs}
codeBlockMatchingCloseBefore={
config.editor.codeBlockMatchingCloseBefore
}
codeBlockMatchingTriples={config.editor.codeBlockMatchingTriples}
codeBlockExplodingPairs={config.editor.codeBlockExplodingPairs}
scrollPastEnd={config.editor.scrollPastEnd}
storageKey={storageKey}
noteKey={noteKey}
fetchUrlTitle={config.editor.fetchUrlTitle}
enableTableEditor={config.editor.enableTableEditor}
linesHighlighted={linesHighlighted}
onChange={e => this.handleChange(e)}
onBlur={e => this.handleBlur(e)}
spellCheck={config.editor.spellcheck}
enableSmartPaste={config.editor.enableSmartPaste}
hotkey={config.hotkey}
switchPreview={config.editor.switchPreview}
enableMarkdownLint={config.editor.enableMarkdownLint}
customMarkdownLintConfig={config.editor.customMarkdownLintConfig}
prettierConfig={config.editor.prettierConfig}
deleteUnusedAttachments={config.editor.deleteUnusedAttachments}
RTL={RTL}
/>
<MarkdownPreview
ref={this.previewRef}
styleName={
this.state.status === 'PREVIEW' ? 'preview' : 'preview--hide'
}
style={previewStyle}
theme={config.ui.theme}
keyMap={config.editor.keyMap}
fontSize={config.preview.fontSize}
fontFamily={config.preview.fontFamily}
codeBlockTheme={config.preview.codeBlockTheme}
codeBlockFontFamily={config.editor.fontFamily}
lineNumber={config.preview.lineNumber}
indentSize={editorIndentSize}
scrollPastEnd={config.preview.scrollPastEnd}
smartQuotes={config.preview.smartQuotes}
smartArrows={config.preview.smartArrows}
breaks={config.preview.breaks}
sanitize={config.preview.sanitize}
mermaidHTMLLabel={config.preview.mermaidHTMLLabel}
onContextMenu={e => this.handleContextMenu(e)}
onDoubleClick={e => this.handleDoubleClick(e)}
tabIndex='0'
value={this.state.renderValue}
onMouseUp={e => this.handlePreviewMouseUp(e)}
onMouseDown={e => this.handlePreviewMouseDown(e)}
onCheckboxClick={e => this.handleCheckboxClick(e)}
showCopyNotification={config.ui.showCopyNotification}
storagePath={storage.path}
noteKey={noteKey}
customCSS={config.preview.customCSS}
allowCustomCSS={config.preview.allowCustomCSS}
lineThroughCheckbox={config.preview.lineThroughCheckbox}
onDrop={e => this.handleDropImage(e)}
RTL={RTL}
/>
</div>
)
}
}
MarkdownEditor.propTypes = {
className: PropTypes.string,
value: PropTypes.string,
onChange: PropTypes.func,
ignorePreviewPointerEvents: PropTypes.bool
}
export default CSSModules(MarkdownEditor, styles)