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CodeEditor.js
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CodeEditor.js
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import PropTypes from 'prop-types'
import React from 'react'
import _ from 'lodash'
import CodeMirror from 'codemirror'
import 'codemirror-mode-elixir'
import attachmentManagement from 'browser/main/lib/dataApi/attachmentManagement'
import convertModeName from 'browser/lib/convertModeName'
import eventEmitter from 'browser/main/lib/eventEmitter'
import iconv from 'iconv-lite'
const { ipcRenderer } = require('electron')
CodeMirror.modeURL = '../node_modules/codemirror/mode/%N/%N.js'
const defaultEditorFontFamily = ['Monaco', 'Menlo', 'Ubuntu Mono', 'Consolas', 'source-code-pro', 'monospace']
const buildCMRulers = (rulers, enableRulers) =>
enableRulers ? rulers.map(ruler => ({ column: ruler })) : []
export default class CodeEditor extends React.Component {
constructor (props) {
super(props)
this.scrollHandler = _.debounce(this.handleScroll.bind(this), 100, {leading: false, trailing: true})
this.changeHandler = (e) => this.handleChange(e)
this.focusHandler = () => {
ipcRenderer.send('editor:focused', true)
}
this.blurHandler = (editor, e) => {
ipcRenderer.send('editor:focused', false)
if (e == null) return null
let el = e.relatedTarget
while (el != null) {
if (el === this.refs.root) {
return
}
el = el.parentNode
}
this.props.onBlur != null && this.props.onBlur(e)
const {storageKey, noteKey} = this.props
attachmentManagement.deleteAttachmentsNotPresentInNote(this.editor.getValue(), storageKey, noteKey)
}
this.pasteHandler = (editor, e) => this.handlePaste(editor, e)
this.loadStyleHandler = (e) => {
this.editor.refresh()
}
this.searchHandler = (e, msg) => this.handleSearch(msg)
this.searchState = null
}
handleSearch (msg) {
const cm = this.editor
const component = this
if (component.searchState) cm.removeOverlay(component.searchState)
if (msg.length < 3) return
cm.operation(function () {
component.searchState = makeOverlay(msg, 'searching')
cm.addOverlay(component.searchState)
function makeOverlay (query, style) {
query = new RegExp(query.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, '\\$&'), 'gi')
return {
token: function (stream) {
query.lastIndex = stream.pos
var match = query.exec(stream.string)
if (match && match.index === stream.pos) {
stream.pos += match[0].length || 1
return style
} else if (match) {
stream.pos = match.index
} else {
stream.skipToEnd()
}
}
}
}
})
}
componentDidMount () {
const { rulers, enableRulers } = this.props
this.value = this.props.value
this.editor = CodeMirror(this.refs.root, {
rulers: buildCMRulers(rulers, enableRulers),
value: this.props.value,
lineNumbers: this.props.displayLineNumbers,
lineWrapping: true,
theme: this.props.theme,
indentUnit: this.props.indentSize,
tabSize: this.props.indentSize,
indentWithTabs: this.props.indentType !== 'space',
keyMap: this.props.keyMap,
scrollPastEnd: this.props.scrollPastEnd,
inputStyle: 'textarea',
dragDrop: false,
foldGutter: true,
gutters: ['CodeMirror-linenumbers', 'CodeMirror-foldgutter'],
autoCloseBrackets: true,
extraKeys: {
Tab: function (cm) {
const cursor = cm.getCursor()
const line = cm.getLine(cursor.line)
if (cm.somethingSelected()) cm.indentSelection('add')
else {
const tabs = cm.getOption('indentWithTabs')
if (line.trimLeft().match(/^(-|\*|\+) (\[( |x)] )?$/)) {
cm.execCommand('goLineStart')
if (tabs) {
cm.execCommand('insertTab')
} else {
cm.execCommand('insertSoftTab')
}
cm.execCommand('goLineEnd')
} else {
if (tabs) {
cm.execCommand('insertTab')
} else {
cm.execCommand('insertSoftTab')
}
}
}
},
'Cmd-T': function (cm) {
// Do nothing
},
Enter: 'boostNewLineAndIndentContinueMarkdownList',
'Ctrl-C': (cm) => {
if (cm.getOption('keyMap').substr(0, 3) === 'vim') {
document.execCommand('copy')
}
return CodeMirror.Pass
}
}
})
this.setMode(this.props.mode)
this.editor.on('focus', this.focusHandler)
this.editor.on('blur', this.blurHandler)
this.editor.on('change', this.changeHandler)
this.editor.on('paste', this.pasteHandler)
eventEmitter.on('top:search', this.searchHandler)
eventEmitter.emit('code:init')
this.editor.on('scroll', this.scrollHandler)
const editorTheme = document.getElementById('editorTheme')
editorTheme.addEventListener('load', this.loadStyleHandler)
CodeMirror.Vim.defineEx('quit', 'q', this.quitEditor)
CodeMirror.Vim.defineEx('q!', 'q!', this.quitEditor)
CodeMirror.Vim.defineEx('wq', 'wq', this.quitEditor)
CodeMirror.Vim.defineEx('qw', 'qw', this.quitEditor)
CodeMirror.Vim.map('ZZ', ':q', 'normal')
}
quitEditor () {
document.querySelector('textarea').blur()
}
componentWillUnmount () {
this.editor.off('focus', this.focusHandler)
this.editor.off('blur', this.blurHandler)
this.editor.off('change', this.changeHandler)
this.editor.off('paste', this.pasteHandler)
eventEmitter.off('top:search', this.searchHandler)
this.editor.off('scroll', this.scrollHandler)
const editorTheme = document.getElementById('editorTheme')
editorTheme.removeEventListener('load', this.loadStyleHandler)
}
componentDidUpdate (prevProps, prevState) {
let needRefresh = false
const { rulers, enableRulers } = this.props
if (prevProps.mode !== this.props.mode) {
this.setMode(this.props.mode)
}
if (prevProps.theme !== this.props.theme) {
this.editor.setOption('theme', this.props.theme)
// editor should be refreshed after css loaded
}
if (prevProps.fontSize !== this.props.fontSize) {
needRefresh = true
}
if (prevProps.fontFamily !== this.props.fontFamily) {
needRefresh = true
}
if (prevProps.keyMap !== this.props.keyMap) {
needRefresh = true
}
if (prevProps.enableRulers !== enableRulers || prevProps.rulers !== rulers) {
this.editor.setOption('rulers', buildCMRulers(rulers, enableRulers))
}
if (prevProps.indentSize !== this.props.indentSize) {
this.editor.setOption('indentUnit', this.props.indentSize)
this.editor.setOption('tabSize', this.props.indentSize)
}
if (prevProps.indentType !== this.props.indentType) {
this.editor.setOption('indentWithTabs', this.props.indentType !== 'space')
}
if (prevProps.displayLineNumbers !== this.props.displayLineNumbers) {
this.editor.setOption('lineNumbers', this.props.displayLineNumbers)
}
if (prevProps.scrollPastEnd !== this.props.scrollPastEnd) {
this.editor.setOption('scrollPastEnd', this.props.scrollPastEnd)
}
if (needRefresh) {
this.editor.refresh()
}
}
setMode (mode) {
let syntax = CodeMirror.findModeByName(convertModeName(mode))
if (syntax == null) syntax = CodeMirror.findModeByName('Plain Text')
this.editor.setOption('mode', syntax.mime)
CodeMirror.autoLoadMode(this.editor, syntax.mode)
}
handleChange (e) {
this.value = this.editor.getValue()
if (this.props.onChange) {
this.props.onChange(e)
}
}
moveCursorTo (row, col) {
}
scrollToLine (num) {
}
focus () {
this.editor.focus()
}
blur () {
this.editor.blur()
}
reload () {
// Change event shouldn't be fired when switch note
this.editor.off('change', this.changeHandler)
this.value = this.props.value
this.editor.setValue(this.props.value)
this.editor.clearHistory()
this.editor.on('change', this.changeHandler)
this.editor.refresh()
}
setValue (value) {
const cursor = this.editor.getCursor()
this.editor.setValue(value)
this.editor.setCursor(cursor)
}
handleDropImage (dropEvent) {
dropEvent.preventDefault()
const {storageKey, noteKey} = this.props
attachmentManagement.handleAttachmentDrop(this, storageKey, noteKey, dropEvent)
}
insertAttachmentMd (imageMd) {
this.editor.replaceSelection(imageMd)
}
handlePaste (editor, e) {
const clipboardData = e.clipboardData
const dataTransferItem = clipboardData.items[0]
const pastedTxt = clipboardData.getData('text')
const isURL = (str) => {
const matcher = /^(?:\w+:)?\/\/([^\s\.]+\.\S{2}|localhost[\:?\d]*)\S*$/
return matcher.test(str)
}
const isInLinkTag = (editor) => {
const startCursor = editor.getCursor('start')
const prevChar = editor.getRange(
{ line: startCursor.line, ch: startCursor.ch - 2 },
{ line: startCursor.line, ch: startCursor.ch }
)
const endCursor = editor.getCursor('end')
const nextChar = editor.getRange(
{ line: endCursor.line, ch: endCursor.ch },
{ line: endCursor.line, ch: endCursor.ch + 1 }
)
return prevChar === '](' && nextChar === ')'
}
if (dataTransferItem.type.match('image')) {
const {storageKey, noteKey} = this.props
attachmentManagement.handlePastImageEvent(this, storageKey, noteKey, dataTransferItem)
} else if (this.props.fetchUrlTitle && isURL(pastedTxt) && !isInLinkTag(editor)) {
this.handlePasteUrl(e, editor, pastedTxt)
}
}
handleScroll (e) {
if (this.props.onScroll) {
this.props.onScroll(e)
}
}
handlePasteUrl (e, editor, pastedTxt) {
e.preventDefault()
const taggedUrl = `<${pastedTxt}>`
editor.replaceSelection(taggedUrl)
fetch(pastedTxt, {
method: 'get'
}).then((response) => {
return this.decodeResponse(response)
}).then((response) => {
const parsedResponse = (new window.DOMParser()).parseFromString(response, 'text/html')
const value = editor.getValue()
const cursor = editor.getCursor()
const LinkWithTitle = `[${parsedResponse.title}](${pastedTxt})`
const newValue = value.replace(taggedUrl, LinkWithTitle)
editor.setValue(newValue)
editor.setCursor(cursor)
}).catch((e) => {
const value = editor.getValue()
const newValue = value.replace(taggedUrl, pastedTxt)
const cursor = editor.getCursor()
editor.setValue(newValue)
editor.setCursor(cursor)
})
}
decodeResponse (response) {
const headers = response.headers
const _charset = headers.has('content-type')
? this.extractContentTypeCharset(headers.get('content-type'))
: undefined
return response.arrayBuffer().then((buff) => {
return new Promise((resolve, reject) => {
try {
const charset = _charset !== undefined && iconv.encodingExists(_charset) ? _charset : 'utf-8'
resolve(iconv.decode(new Buffer(buff), charset).toString())
} catch (e) {
reject(e)
}
})
})
}
extractContentTypeCharset (contentType) {
return contentType.split(';').filter((str) => {
return str.trim().toLowerCase().startsWith('charset')
}).map((str) => {
return str.replace(/['"]/g, '').split('=')[1]
})[0]
}
render () {
const { className, fontSize } = this.props
let fontFamily = this.props.fontFamily
fontFamily = _.isString(fontFamily) && fontFamily.length > 0
? [fontFamily].concat(defaultEditorFontFamily)
: defaultEditorFontFamily
return (
<div
className={className == null
? 'CodeEditor'
: `CodeEditor ${className}`
}
ref='root'
tabIndex='-1'
style={{
fontFamily: fontFamily.join(', '),
fontSize: fontSize
}}
onDrop={(e) => this.handleDropImage(e)}
/>
)
}
}
CodeEditor.propTypes = {
value: PropTypes.string,
enableRulers: PropTypes.bool,
rulers: PropTypes.arrayOf(Number),
mode: PropTypes.string,
className: PropTypes.string,
onBlur: PropTypes.func,
onChange: PropTypes.func,
readOnly: PropTypes.bool
}
CodeEditor.defaultProps = {
readOnly: false,
theme: 'xcode',
keyMap: 'sublime',
fontSize: 14,
fontFamily: 'Monaco, Consolas',
indentSize: 4,
indentType: 'space'
}