dootask/electron/electron.js
2024-11-10 12:20:53 +08:00

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const fs = require('fs')
const os = require("os");
const path = require('path')
const {app, BrowserWindow, ipcMain, dialog, clipboard, nativeImage, shell, Tray, Menu, globalShortcut, Notification, BrowserView, nativeTheme} = require('electron')
const {autoUpdater} = require("electron-updater")
const log = require("electron-log");
const electronConf = require('electron-config')
const userConf = new electronConf()
const fsProm = require('fs/promises');
const PDFDocument = require('pdf-lib').PDFDocument;
const Screenshots = require("electron-screenshots-tool").Screenshots;
const crc = require('crc');
const zlib = require('zlib');
const utils = require('./utils');
const config = require('./package.json');
const electronMenu = require("./electron-menu");
const spawn = require("child_process").spawn;
const isMac = process.platform === 'darwin'
const isWin = process.platform === 'win32'
const allowedUrls = /^(?:https?|mailto|tel|callto):/i;
const allowedCalls = /^(?:mailto|tel|callto):/i;
let enableStoreBkp = true;
let dialogOpen = false;
let enablePlugins = false;
let mainWindow = null,
mainTray = null,
isReady = false,
willQuitApp = false,
devloadUrl = "",
devloadCachePath = path.resolve(__dirname, ".devload");
let screenshotObj = null,
screenshotKey = null;
let childWindow = [],
webTabWindow = null,
webTabView = [],
webTabHeight = 38;
let showState = {},
onShowWindow = (win) => {
if (typeof showState[win.webContents.id] === 'undefined') {
showState[win.webContents.id] = true
win.setBackgroundColor('rgba(255, 255, 255, 0)')
win.show();
}
}
if (fs.existsSync(devloadCachePath)) {
devloadUrl = fs.readFileSync(devloadCachePath, 'utf8')
}
/**
* 创建主窗口
*/
function createMainWindow() {
mainWindow = new BrowserWindow({
width: 1280,
height: 800,
minWidth: 360,
minHeight: 360,
center: true,
autoHideMenuBar: true,
webPreferences: {
preload: path.join(__dirname, 'electron-preload.js'),
webSecurity: true,
nodeIntegration: true,
contextIsolation: true,
nativeWindowOpen: true
}
})
const originalUA = mainWindow.webContents.session.getUserAgent() || mainWindow.webContents.getUserAgent()
mainWindow.webContents.setUserAgent(originalUA + " MainTaskWindow/" + process.platform + "/" + os.arch() + "/1.0");
mainWindow.webContents.setWindowOpenHandler(({url}) => {
if (allowedCalls.test(url)) {
return {action: 'allow'}
}
utils.onBeforeOpenWindow(mainWindow.webContents, url).then(() => {
openExternal(url)
})
return {action: 'deny'}
})
electronMenu.webContentsMenu(mainWindow.webContents)
if (devloadUrl) {
mainWindow.loadURL(devloadUrl).then(_ => { }).catch(_ => { })
} else {
mainWindow.loadFile('./public/index.html').then(_ => { }).catch(_ => { })
}
mainWindow.on('page-title-updated', (event, title) => {
if (title == "index.html") {
event.preventDefault()
}
})
mainWindow.on('focus', () => {
mainWindow.webContents.send("browserWindowFocus", {})
})
mainWindow.on('blur', () => {
mainWindow.webContents.send("browserWindowBlur", {})
})
mainWindow.on('close', event => {
if (!willQuitApp) {
utils.onBeforeUnload(event, mainWindow).then(() => {
if (process.platform === 'win32') {
mainWindow.hide()
} else if (process.platform === 'darwin') {
mainWindow.hide()
} else {
app.quit()
}
})
}
})
}
/**
* 创建子窗口
* @param args {path, hash, title, titleFixed, force, userAgent, config, webPreferences}
*/
function createChildWindow(args) {
if (!args) {
return;
}
if (!utils.isJson(args)) {
args = {path: args, config: {}}
}
let name = args.name || "auto_" + utils.randomString(6);
let item = childWindow.find(item => item.name == name);
let browser = item ? item.browser : null;
if (browser) {
browser.focus();
if (args.force === false) {
return;
}
} else {
let config = args.config || {};
let webPreferences = args.webPreferences || {};
browser = new BrowserWindow(Object.assign({
width: 1280,
height: 800,
minWidth: 360,
minHeight: 360,
center: true,
show: false,
parent: mainWindow,
autoHideMenuBar: true,
webPreferences: Object.assign({
preload: path.join(__dirname, 'electron-preload.js'),
webSecurity: true,
nodeIntegration: true,
contextIsolation: true,
nativeWindowOpen: true
}, webPreferences),
}, config))
browser.on('page-title-updated', (event, title) => {
if (title == "index.html" || config.titleFixed === true) {
event.preventDefault()
}
})
browser.on('focus', () => {
browser.webContents.send("browserWindowFocus", {})
})
browser.on('blur', () => {
browser.webContents.send("browserWindowBlur", {})
})
browser.on('close', event => {
if (!willQuitApp) {
utils.onBeforeUnload(event, browser).then(() => {
browser.destroy()
})
}
})
browser.on('closed', () => {
let index = childWindow.findIndex(item => item.name == name);
if (index > -1) {
childWindow.splice(index, 1)
}
})
browser.once('ready-to-show', () => {
onShowWindow(browser);
})
browser.webContents.once('dom-ready', () => {
onShowWindow(browser);
})
childWindow.push({ name, browser })
}
const originalUA = browser.webContents.session.getUserAgent() || browser.webContents.getUserAgent()
browser.webContents.setUserAgent(originalUA + " SubTaskWindow/" + process.platform + "/" + os.arch() + "/1.0" + (args.userAgent ? (" " + args.userAgent) : ""));
browser.webContents.setWindowOpenHandler(({url}) => {
if (allowedCalls.test(url)) {
return {action: 'allow'}
}
utils.onBeforeOpenWindow(browser.webContents, url).then(() => {
openExternal(url)
})
return {action: 'deny'}
})
electronMenu.webContentsMenu(browser.webContents)
const hash = args.hash || args.path;
if (/^https?:\/\//i.test(hash)) {
browser.loadURL(hash).then(_ => { }).catch(_ => { })
return;
}
if (devloadUrl) {
browser.loadURL(devloadUrl + '#' + hash).then(_ => { }).catch(_ => { })
return;
}
browser.loadFile('./public/index.html', {
hash
}).then(_ => {
})
}
/**
* 更新子窗口
* @param browser
* @param args
*/
function updateChildWindow(browser, args) {
if (!args) {
return;
}
if (!utils.isJson(args)) {
args = {path: args, name: null}
}
const hash = args.hash || args.path;
if (hash) {
if (devloadUrl) {
browser.loadURL(devloadUrl + '#' + hash).then(_ => { }).catch(_ => { })
} else {
browser.loadFile('./public/index.html', {
hash
}).then(_ => { }).catch(_ => { })
}
}
if (args.name) {
const er = childWindow.find(item => item.browser == browser);
if (er) {
er.name = args.name;
}
}
}
/**
* 创建内置浏览器
* @param args {url, ?}
*/
function createWebTabWindow(args) {
if (!args) {
return;
}
if (!utils.isJson(args)) {
args = {url: args}
}
if (!allowedUrls.test(args.url)) {
return;
}
// 创建父级窗口
if (!webTabWindow) {
let config = Object.assign(args.config || {}, userConf.get('webTabWindow', {}));
let webPreferences = args.webPreferences || {};
const titleBarOverlay = {
height: webTabHeight
}
if (nativeTheme.shouldUseDarkColors) {
titleBarOverlay.color = '#3B3B3D'
titleBarOverlay.symbolColor = '#C5C5C5'
}
webTabWindow = new BrowserWindow(Object.assign({
x: mainWindow.getBounds().x + webTabHeight,
y: mainWindow.getBounds().y + webTabHeight,
width: 1280,
height: 800,
minWidth: 360,
minHeight: 360,
center: true,
show: false,
autoHideMenuBar: true,
titleBarStyle: 'hidden',
titleBarOverlay,
webPreferences: Object.assign({
preload: path.join(__dirname, 'electron-preload.js'),
webSecurity: true,
nodeIntegration: true,
contextIsolation: true,
nativeWindowOpen: true
}, webPreferences),
}, config))
if (nativeTheme.shouldUseDarkColors) {
webTabWindow.setBackgroundColor('#3B3B3D')
} else {
webTabWindow.setBackgroundColor('#EFF0F4')
}
webTabWindow.on('resize', () => {
resizeWebTab(0)
})
webTabWindow.on('enter-full-screen', () => {
utils.onDispatchEvent(webTabWindow.webContents, {
event: 'enter-full-screen',
}).then(_ => { })
})
webTabWindow.on('leave-full-screen', () => {
utils.onDispatchEvent(webTabWindow.webContents, {
event: 'leave-full-screen',
}).then(_ => { })
})
webTabWindow.on('close', event => {
if (!willQuitApp) {
closeWebTab(0)
event.preventDefault()
} else {
userConf.set('webTabWindow', webTabWindow.getBounds())
}
})
webTabWindow.on('closed', () => {
webTabView.forEach(({view}) => {
try {
view.webContents.close()
} catch (e) {
//
}
})
webTabView = []
webTabWindow = null
})
webTabWindow.once('ready-to-show', () => {
onShowWindow(webTabWindow);
})
webTabWindow.webContents.once('dom-ready', () => {
onShowWindow(webTabWindow);
})
webTabWindow.webContents.on('before-input-event', (event, input) => {
if (utils.isMetaOrControl(input) && input.key.toLowerCase() === 'r') {
reloadWebTab(0)
event.preventDefault()
} else if (utils.isMetaOrControl(input) && input.shift && input.key.toLowerCase() === 'i') {
devToolsWebTab(0)
}
})
webTabWindow.loadFile('./render/tabs/index.html', {}).then(_ => {
})
}
if (webTabWindow.isMinimized()) {
webTabWindow.restore()
}
webTabWindow.focus();
webTabWindow.show();
// 创建子窗口
const browserView = new BrowserView({
useHTMLTitleAndIcon: true,
useLoadingView: true,
useErrorView: true,
webPreferences: {
preload: path.join(__dirname, 'electron-preload.js'),
}
})
if (nativeTheme.shouldUseDarkColors) {
browserView.setBackgroundColor('#575757')
} else {
browserView.setBackgroundColor('#FFFFFF')
}
browserView.setBounds({
x: 0,
y: webTabHeight,
width: webTabWindow.getContentBounds().width || 1280,
height: (webTabWindow.getContentBounds().height || 800) - webTabHeight,
})
browserView.webContents.on('destroyed', () => {
closeWebTab(browserView.webContents.id)
})
browserView.webContents.setWindowOpenHandler(({url}) => {
if (allowedCalls.test(url)) {
return {action: 'allow'}
}
createWebTabWindow({url})
return {action: 'deny'}
})
browserView.webContents.on('page-title-updated', (event, title) => {
utils.onDispatchEvent(webTabWindow.webContents, {
event: 'title',
id: browserView.webContents.id,
title: title,
url: browserView.webContents.getURL(),
}).then(_ => { })
})
browserView.webContents.on('did-fail-load', (event, errorCode, errorDescription, validatedURL, isMainFrame) => {
if (!errorDescription) {
return
}
utils.onDispatchEvent(webTabWindow.webContents, {
event: 'title',
id: browserView.webContents.id,
title: errorDescription,
url: browserView.webContents.getURL(),
}).then(_ => { })
})
browserView.webContents.on('page-favicon-updated', (event, favicons) => {
utils.onDispatchEvent(webTabWindow.webContents, {
event: 'favicon',
id: browserView.webContents.id,
favicons
}).then(_ => { })
})
browserView.webContents.on('did-start-loading', _ => {
utils.onDispatchEvent(webTabWindow.webContents, {
event: 'start-loading',
id: browserView.webContents.id,
}).then(_ => { })
})
browserView.webContents.on('did-stop-loading', _ => {
utils.onDispatchEvent(webTabWindow.webContents, {
event: 'stop-loading',
id: browserView.webContents.id,
}).then(_ => { })
// 加载完成暗黑模式下把窗口背景色改成白色,避免透明网站背景色穿透
if (nativeTheme.shouldUseDarkColors) {
browserView.setBackgroundColor('#FFFFFF')
}
})
browserView.webContents.on('before-input-event', (event, input) => {
if (utils.isMetaOrControl(input) && input.key.toLowerCase() === 'r') {
browserView.webContents.reload()
event.preventDefault()
} else if (utils.isMetaOrControl(input) && input.shift && input.key.toLowerCase() === 'i') {
browserView.webContents.toggleDevTools()
}
})
browserView.webContents.loadURL(args.url).then(_ => { }).catch(_ => { })
webTabWindow.addBrowserView(browserView)
webTabView.push({
id: browserView.webContents.id,
view: browserView
})
utils.onDispatchEvent(webTabWindow.webContents, {
event: 'create',
id: browserView.webContents.id,
url: args.url,
}).then(_ => { })
activateWebTab(browserView.webContents.id)
}
/**
* 获取当前内置浏览器标签
* @returns {Electron.BrowserView|undefined}
*/
function currentWebTab() {
const views = webTabWindow.getBrowserViews()
const view = views.length ? views[views.length - 1] : undefined
if (!view) {
return undefined
}
return webTabView.find(item => item.id == view.webContents.id)
}
/**
* 重新加载内置浏览器标签
* @param id
*/
function reloadWebTab(id) {
const item = id === 0 ? currentWebTab() : webTabView.find(item => item.id == id)
if (!item) {
return
}
item.view.webContents.reload()
}
/**
* 内置浏览器标签打开开发者工具
* @param id
*/
function devToolsWebTab(id) {
const item = id === 0 ? currentWebTab() : webTabView.find(item => item.id == id)
if (!item) {
return
}
item.view.webContents.toggleDevTools()
}
/**
* 调整内置浏览器标签尺寸
* @param id
*/
function resizeWebTab(id) {
const item = id === 0 ? currentWebTab() : webTabView.find(item => item.id == id)
if (!item) {
return
}
item.view.setBounds({
x: 0,
y: webTabHeight,
width: webTabWindow.getContentBounds().width || 1280,
height: (webTabWindow.getContentBounds().height || 800) - webTabHeight,
})
}
/**
* 切换内置浏览器标签
* @param id
*/
function activateWebTab(id) {
const item = id === 0 ? currentWebTab() : webTabView.find(item => item.id == id)
if (!item) {
return
}
resizeWebTab(item.id)
webTabWindow.setTopBrowserView(item.view)
item.view.webContents.focus()
utils.onDispatchEvent(webTabWindow.webContents, {
event: 'switch',
id: item.id,
}).then(_ => { })
}
/**
* 关闭内置浏览器标签
* @param id
*/
function closeWebTab(id) {
const item = id === 0 ? currentWebTab() : webTabView.find(item => item.id == id)
if (!item) {
return
}
if (webTabView.length === 1) {
webTabWindow.hide()
}
webTabWindow.removeBrowserView(item.view)
try {
item.view.webContents.close()
} catch (e) {
//
}
const index = webTabView.findIndex(({id}) => item.id == id)
if (index > -1) {
webTabView.splice(index, 1)
}
utils.onDispatchEvent(webTabWindow.webContents, {
event: 'close',
id: item.id,
}).then(_ => { })
if (webTabView.length === 0) {
userConf.set('webTabWindow', webTabWindow.getBounds())
webTabWindow.destroy()
} else {
activateWebTab(0)
}
}
const getTheLock = app.requestSingleInstanceLock()
if (!getTheLock) {
app.quit()
} else {
app.on('second-instance', () => {
utils.setShowWindow(mainWindow)
})
app.on('ready', () => {
isReady = true
// SameSite
utils.useCookie()
// 创建主窗口
createMainWindow()
// 创建托盘
if (['darwin', 'win32'].includes(process.platform) && utils.isJson(config.trayIcon)) {
mainTray = new Tray(path.join(__dirname, config.trayIcon[devloadUrl ? 'dev' : 'prod'][process.platform === 'darwin' ? 'mac' : 'win']));
mainTray.on('click', () => {
utils.setShowWindow(mainWindow)
})
mainTray.setToolTip(config.name)
if (process.platform === 'win32') {
const trayMenu = Menu.buildFromTemplate([{
label: '显示',
click: () => {
utils.setShowWindow(mainWindow)
}
}, {
label: '退出',
click: () => {
app.quit()
}
}])
mainTray.setContextMenu(trayMenu)
}
}
//
if (process.platform === 'win32') {
app.setAppUserModelId(config.name)
}
// 截图对象
screenshotObj = new Screenshots({
singleWindow: true,
mainWindow: mainWindow
})
})
}
app.on('activate', () => {
if (BrowserWindow.getAllWindows().length === 0) {
if (isReady) {
createMainWindow()
}
} else if (mainWindow) {
if (!mainWindow.isVisible()) {
mainWindow.show()
}
}
})
app.on('window-all-closed', () => {
if (willQuitApp || process.platform !== 'darwin') {
app.quit()
}
})
app.on('before-quit', () => {
willQuitApp = true
})
app.on("will-quit",function(){
globalShortcut.unregisterAll();
})
/**
* 设置菜单语言包
* @param args {path}
*/
ipcMain.on('setMenuLanguage', (event, args) => {
if (utils.isJson(args)) {
electronMenu.setLanguage(args)
}
event.returnValue = "ok"
})
/**
* 打开文件
* @param args {path}
*/
ipcMain.on('openFile', (event, args) => {
utils.openFile(args.path)
event.returnValue = "ok"
})
/**
* 退出客户端
*/
ipcMain.on('windowQuit', (event) => {
event.returnValue = "ok"
app.quit();
})
/**
* 创建路由窗口
* @param args {path, ?}
*/
ipcMain.on('openChildWindow', (event, args) => {
createChildWindow(args)
event.returnValue = "ok"
})
/**
* 更新路由窗口
* @param args {?name, ?path} // name: 不是要更改的窗口名,是要把窗口名改成什么, path: 地址
*/
ipcMain.on('updateChildWindow', (event, args) => {
const browser = BrowserWindow.fromWebContents(event.sender);
updateChildWindow(browser, args)
event.returnValue = "ok"
})
/**
* 获取路由窗口信息
*/
ipcMain.handle('getChildWindow', (event, args) => {
let child;
if (!args) {
const browser = BrowserWindow.fromWebContents(event.sender);
child = childWindow.find(({browser: win}) => win === browser)
} else {
child = childWindow.find(({name}) => name === args)
}
if (child) {
return {
name: child.name,
id: child.browser.webContents.id,
url: child.browser.webContents.getURL()
}
}
return null;
});
/**
* 创建路由窗口todo 已废弃)
* @param args {path, ?}
*/
ipcMain.on('windowRouter', (event, args) => {
createChildWindow(args)
event.returnValue = "ok"
})
/**
* 更新路由窗口todo 已废弃)
* @param args {?name, ?path} // name: 不是要更改的窗口名,是要把窗口名改成什么, path: 地址
*/
ipcMain.on('updateRouter', (event, args) => {
const browser = BrowserWindow.fromWebContents(event.sender);
updateChildWindow(browser, args)
event.returnValue = "ok"
})
/**
* 内置浏览器 - 打开创建
* @param args {url, ?}
*/
ipcMain.on('openWebTabWindow', (event, args) => {
createWebTabWindow(args)
event.returnValue = "ok"
})
/**
* 内置浏览器 - 激活标签
* @param id
*/
ipcMain.on('webTabActivate', (event, id) => {
activateWebTab(id)
event.returnValue = "ok"
})
/**
* 内置浏览器 - 关闭标签
* @param id
*/
ipcMain.on('webTabClose', (event, id) => {
closeWebTab(id)
event.returnValue = "ok"
})
/**
* 内置浏览器 - 在外部浏览器打开
*/
ipcMain.on('webTabExternal', (event) => {
const item = currentWebTab()
if (!item) {
return
}
openExternal(item.view.webContents.getURL())
event.returnValue = "ok"
})
/**
* 内置浏览器 - 打开开发者工具
*/
ipcMain.on('webTabOpenDevTools', (event) => {
const item = currentWebTab()
if (!item) {
return
}
item.view.webContents.openDevTools()
event.returnValue = "ok"
})
/**
* 内置浏览器 - 销毁所有标签及窗口
*/
ipcMain.on('webTabDestroyAll', (event) => {
if (webTabWindow) {
webTabWindow.destroy()
}
event.returnValue = "ok"
})
/**
* 隐藏窗口mac、win隐藏其他关闭
*/
ipcMain.on('windowHidden', (event) => {
if (['darwin', 'win32'].includes(process.platform)) {
app.hide();
} else {
app.quit();
}
event.returnValue = "ok"
})
/**
* 关闭窗口
*/
ipcMain.on('windowClose', (event) => {
const win = BrowserWindow.fromWebContents(event.sender);
win.close()
event.returnValue = "ok"
})
/**
* 销毁窗口
*/
ipcMain.on('windowDestroy', (event) => {
const win = BrowserWindow.fromWebContents(event.sender);
win.destroy()
event.returnValue = "ok"
})
/**
* 关闭所有子窗口
*/
ipcMain.on('childWindowCloseAll', (event) => {
childWindow.some(({browser}) => {
browser && browser.close()
})
event.returnValue = "ok"
})
/**
* 销毁所有子窗口
*/
ipcMain.on('childWindowDestroyAll', (event) => {
childWindow.some(({browser}) => {
browser && browser.destroy()
})
event.returnValue = "ok"
})
/**
* 设置窗口尺寸
* @param args {width, height, autoZoom, minWidth, minHeight, maxWidth, maxHeight}
*/
ipcMain.on('windowSize', (event, args) => {
const win = BrowserWindow.fromWebContents(event.sender);
if (win) {
if (args.width || args.height) {
let [w, h] = win.getSize()
const width = args.width || w
const height = args.height || h
win.setSize(width, height, args.animate === true)
//
if (args.autoZoom === true) {
let move = false
let [x, y] = win.getPosition()
if (Math.abs(width - w) > 10) {
move = true
x -= (width - w) / 2
}
if (Math.abs(height - h) > 10) {
move = true
y -= (height - h) / 2
}
if (move) {
win.setPosition(Math.max(0, Math.floor(x)), Math.max(0, Math.floor(y)))
}
}
}
if (args.minWidth || args.minHeight) {
win.setMinimumSize(args.minWidth || win.getMinimumSize()[0], args.minHeight || win.getMinimumSize()[1])
}
if (args.maxWidth || args.maxHeight) {
win.setMaximumSize(args.maxWidth || win.getMaximumSize()[0], args.maxHeight || win.getMaximumSize()[1])
}
}
event.returnValue = "ok"
})
/**
* 设置窗口最小尺寸
* @param args {minWidth, minHeight}
*/
ipcMain.on('windowMinSize', (event, args) => {
const win = BrowserWindow.fromWebContents(event.sender);
if (win) {
win.setMinimumSize(args.minWidth || win.getMinimumSize()[0], args.minHeight || win.getMinimumSize()[1])
}
event.returnValue = "ok"
})
/**
* 设置窗口最大尺寸
* @param args {maxWidth, maxHeight}
*/
ipcMain.on('windowMaxSize', (event, args) => {
const win = BrowserWindow.fromWebContents(event.sender);
if (win) {
win.setMaximumSize(args.maxWidth || win.getMaximumSize()[0], args.maxHeight || win.getMaximumSize()[1])
}
event.returnValue = "ok"
})
/**
* 窗口居中
*/
ipcMain.on('windowCenter', (event) => {
const win = BrowserWindow.fromWebContents(event.sender);
if (win) {
win.center();
}
event.returnValue = "ok"
})
/**
* 窗口最大化或恢复
*/
ipcMain.on('windowMax', (event) => {
const win = BrowserWindow.fromWebContents(event.sender);
if (win.isMaximized()) {
win.restore();
} else {
win.maximize();
}
event.returnValue = "ok"
})
/**
* 给主窗口发送信息
* @param args {channel, data}
*/
ipcMain.on('sendForwardMain', (event, args) => {
if (mainWindow) {
mainWindow.webContents.send(args.channel, args.data)
}
event.returnValue = "ok"
})
/**
* 设置Dock标记window闪烁、macos标记
* @param args
*/
ipcMain.on('setDockBadge', (event, args) => {
if (process.platform === 'win32') {
// Window flash
if (!mainWindow.isFocused()) {
mainWindow.once('focus', () => mainWindow.flashFrame(false))
mainWindow.flashFrame(true)
}
return;
}
if (process.platform !== 'darwin') {
// Mac only
return;
}
let num = args;
let tray = true;
if (utils.isJson(args)) {
num = args.num
tray = !!args.tray
}
let text = typeof num === "string" ? num : (utils.runNum(num) > 0 ? String(num) : "")
app.dock.setBadge(text)
if (tray && mainTray) {
mainTray.setTitle(text)
}
event.returnValue = "ok"
})
/**
* 复制Base64图片
* @param args
*/
ipcMain.on('copyBase64Image', (event, args) => {
const { base64 } = args;
if (base64) {
const img = nativeImage.createFromDataURL(base64)
clipboard.writeImage(img)
}
event.returnValue = "ok"
})
/**
* 复制图片根据坐标
* @param args
*/
ipcMain.on('copyImageAt', (event, args) => {
try {
event.sender.copyImageAt(args.x, args.y);
} catch (e) {
// log.error(e)
}
event.returnValue = "ok"
})
/**
* 保存图片
* @param args
*/
ipcMain.on('saveImageAt', async (event, args) => {
await electronMenu.saveImageAs(args.url, args.params)
event.returnValue = "ok"
})
/**
* 绑定截图快捷键
* @param args
*/
ipcMain.on('bindScreenshotKey', (event, args) => {
const { key } = args;
if (screenshotKey !== key) {
if (screenshotKey) {
globalShortcut.unregister(screenshotKey)
screenshotKey = null
}
if (key) {
screenshotKey = key
globalShortcut.register(key, () => {
screenshotObj.startCapture().then(_ => {
screenshotObj.view.webContents.executeJavaScript('if(typeof window.__initializeShortcuts===\'undefined\'){window.__initializeShortcuts=true;document.addEventListener(\'keydown\',function(e){console.log(e);if(e.keyCode===27){window.screenshots.cancel()}})}', true).catch(() => {});
screenshotObj.view.webContents.focus()
})
})
}
}
event.returnValue = "ok"
})
/**
* 执行截图
*/
ipcMain.on('openScreenshot', (event) => {
if (screenshotObj) {
screenshotObj.startCapture().then(_ => {})
}
event.returnValue = "ok"
})
/**
* 关闭截图
*/
ipcMain.on('closeScreenshot', (event) => {
if (screenshotObj && screenshotObj.window?.isFocused()) {
screenshotObj.endCapture().then(_ => {});
}
event.returnValue = "ok"
})
/**
* 通知
*/
ipcMain.on('openNotification', (event, args) => {
const notifiy = new Notification(args);
notifiy.addListener('click', _ => {
mainWindow.webContents.send("clickNotification", args)
})
notifiy.addListener('reply', (event, reply) => {
mainWindow.webContents.send("replyNotification", Object.assign(args, {reply}))
})
notifiy.show()
event.returnValue = "ok"
})
//================================================================
// Update
//================================================================
let autoUpdating = 0
autoUpdater.logger = log
autoUpdater.autoDownload = false
autoUpdater.autoInstallOnAppQuit = true
autoUpdater.on('update-available', info => {
mainWindow.webContents.send("updateAvailable", info)
})
autoUpdater.on('update-downloaded', info => {
mainWindow.webContents.send("updateDownloaded", info)
})
/**
* 检查更新
*/
ipcMain.on('updateCheckAndDownload', (event, args) => {
event.returnValue = "ok"
if (autoUpdating + 3600 > utils.dayjs().unix()) {
return // 限制1小时仅执行一次
}
if (args.provider) {
autoUpdater.setFeedURL(args)
}
autoUpdater.checkForUpdates().then(info => {
if (!info) {
return
}
if (utils.compareVersion(config.version, info.updateInfo.version) >= 0) {
return
}
if (args.apiVersion) {
if (utils.compareVersion(info.updateInfo.version, args.apiVersion) <= 0) {
// 客户端版本 <= 接口版本
autoUpdating = utils.dayjs().unix()
autoUpdater.downloadUpdate().then(_ => {}).catch(_ => {})
}
} else {
autoUpdating = utils.dayjs().unix()
autoUpdater.downloadUpdate().then(_ => {}).catch(_ => {})
}
})
})
/**
* 将主窗口激活到顶层
*/
ipcMain.on('mainWindowTop', (event) => {
mainWindow.moveTop()
event.returnValue = "ok"
})
/**
* 将主窗口激活
*/
ipcMain.on('mainWindowActive', (event) => {
if (!mainWindow.isVisible()) {
mainWindow.show()
}
mainWindow.focus()
event.returnValue = "ok"
})
/**
* 退出并安装更新
*/
ipcMain.on('updateQuitAndInstall', (event) => {
event.returnValue = "ok"
willQuitApp = true
childWindow.some(({browser}) => {
browser && browser.destroy()
})
setTimeout(_ => {
autoUpdater.quitAndInstall(true, true)
}, 1)
})
//================================================================
// Pdf export
//================================================================
const MICRON_TO_PIXEL = 264.58 //264.58 micron = 1 pixel
const PIXELS_PER_INCH = 100.117 // Usually it is 100 pixels per inch but this give better results
const PNG_CHUNK_IDAT = 1229209940;
const LARGE_IMAGE_AREA = 30000000;
//NOTE: Key length must not be longer than 79 bytes (not checked)
function writePngWithText(origBuff, key, text, compressed, base64encoded) {
let isDpi = key == 'dpi';
let inOffset = 0;
let outOffset = 0;
let data = text;
let dataLen = isDpi ? 9 : key.length + data.length + 1; //we add 1 zeros with non-compressed data, for pHYs it's 2 of 4-byte-int + 1 byte
//prepare compressed data to get its size
if (compressed) {
data = zlib.deflateRawSync(encodeURIComponent(text));
dataLen = key.length + data.length + 2; //we add 2 zeros with compressed data
}
let outBuff = Buffer.allocUnsafe(origBuff.length + dataLen + 4); //4 is the header size "zTXt", "tEXt" or "pHYs"
try {
let magic1 = origBuff.readUInt32BE(inOffset);
inOffset += 4;
let magic2 = origBuff.readUInt32BE(inOffset);
inOffset += 4;
if (magic1 != 0x89504e47 && magic2 != 0x0d0a1a0a) {
throw new Error("PNGImageDecoder0");
}
outBuff.writeUInt32BE(magic1, outOffset);
outOffset += 4;
outBuff.writeUInt32BE(magic2, outOffset);
outOffset += 4;
} catch (e) {
log.error(e.message, {stack: e.stack});
throw new Error("PNGImageDecoder1");
}
try {
while (inOffset < origBuff.length) {
let length = origBuff.readInt32BE(inOffset);
inOffset += 4;
let type = origBuff.readInt32BE(inOffset)
inOffset += 4;
if (type == PNG_CHUNK_IDAT) {
// Insert zTXt chunk before IDAT chunk
outBuff.writeInt32BE(dataLen, outOffset);
outOffset += 4;
let typeSignature = isDpi ? 'pHYs' : (compressed ? "zTXt" : "tEXt");
outBuff.write(typeSignature, outOffset);
outOffset += 4;
if (isDpi) {
let dpm = Math.round(parseInt(text) / 0.0254) || 3937; //One inch is equal to exactly 0.0254 meters. 3937 is 100dpi
outBuff.writeInt32BE(dpm, outOffset);
outBuff.writeInt32BE(dpm, outOffset + 4);
outBuff.writeInt8(1, outOffset + 8);
outOffset += 9;
data = Buffer.allocUnsafe(9);
data.writeInt32BE(dpm, 0);
data.writeInt32BE(dpm, 4);
data.writeInt8(1, 8);
} else {
outBuff.write(key, outOffset);
outOffset += key.length;
outBuff.writeInt8(0, outOffset);
outOffset++;
if (compressed) {
outBuff.writeInt8(0, outOffset);
outOffset++;
data.copy(outBuff, outOffset);
} else {
outBuff.write(data, outOffset);
}
outOffset += data.length;
}
let crcVal = 0xffffffff;
crcVal = crc.crcjam(typeSignature, crcVal);
crcVal = crc.crcjam(data, crcVal);
// CRC
outBuff.writeInt32BE(crcVal ^ 0xffffffff, outOffset);
outOffset += 4;
// Writes the IDAT chunk after the zTXt
outBuff.writeInt32BE(length, outOffset);
outOffset += 4;
outBuff.writeInt32BE(type, outOffset);
outOffset += 4;
origBuff.copy(outBuff, outOffset, inOffset);
// Encodes the buffer using base64 if requested
return base64encoded ? outBuff.toString('base64') : outBuff;
}
outBuff.writeInt32BE(length, outOffset);
outOffset += 4;
outBuff.writeInt32BE(type, outOffset);
outOffset += 4;
origBuff.copy(outBuff, outOffset, inOffset, inOffset + length + 4);// +4 to move past the crc
inOffset += length + 4;
outOffset += length + 4;
}
} catch (e) {
log.error(e.message, {stack: e.stack});
throw e;
}
}
//TODO Create a lightweight html file similar to export3.html for exporting to vsdx
function exportVsdx(event, args, directFinalize) {
let win = new BrowserWindow({
width: 1280,
height: 800,
show: false,
webPreferences: {
preload: path.join(__dirname, 'electron-preload.js'),
webSecurity: true,
nodeIntegration: true,
contextIsolation: true,
nativeWindowOpen: true
},
})
let loadEvtCount = 0;
function loadFinished() {
loadEvtCount++;
if (loadEvtCount == 2) {
win.webContents.send('export-vsdx', args);
ipcMain.once('export-vsdx-finished', (evt, data) => {
let hasError = false;
if (data == null) {
hasError = true;
}
//Set finalize here since it is call in the reply below
function finalize() {
win.destroy();
}
if (directFinalize === true) {
event.finalize = finalize;
} else {
//Destroy the window after response being received by caller
ipcMain.once('export-finalize', finalize);
}
if (hasError) {
event.reply('export-error');
} else {
event.reply('export-success', data);
}
});
}
}
//Order of these two events is not guaranteed, so wait for them async.
//TOOD There is still a chance we catch another window 'app-load-finished' if user created multiple windows quickly
ipcMain.once('app-load-finished', loadFinished);
win.webContents.on('did-finish-load', loadFinished);
}
async function mergePdfs(pdfFiles, xml) {
//Pass throgh single files
if (pdfFiles.length == 1 && xml == null) {
return pdfFiles[0];
}
try {
const pdfDoc = await PDFDocument.create();
pdfDoc.setCreator(config.name);
if (xml != null) {
//Embed diagram XML as file attachment
await pdfDoc.attach(Buffer.from(xml).toString('base64'), config.name + '.xml', {
mimeType: 'application/vnd.jgraph.mxfile',
description: config.name + ' Content'
});
}
for (let i = 0; i < pdfFiles.length; i++) {
const pdfFile = await PDFDocument.load(pdfFiles[i].buffer);
const pages = await pdfDoc.copyPages(pdfFile, pdfFile.getPageIndices());
pages.forEach(p => pdfDoc.addPage(p));
}
const pdfBytes = await pdfDoc.save();
return Buffer.from(pdfBytes);
} catch (e) {
throw new Error('Error during PDF combination: ' + e.message);
}
}
//TODO Use canvas to export images if math is not used to speedup export (no capturePage). Requires change to export3.html also
function exportDiagram(event, args, directFinalize) {
if (args.format == 'vsdx') {
exportVsdx(event, args, directFinalize);
return;
}
let browser = null;
try {
browser = new BrowserWindow({
webPreferences: {
preload: path.join(__dirname, 'electron-preload.js'),
backgroundThrottling: false,
contextIsolation: true,
disableBlinkFeatures: 'Auxclick' // Is this needed?
},
show: false,
frame: false,
enableLargerThanScreen: true,
transparent: args.format == 'png' && (args.bg == null || args.bg == 'none'),
});
if (devloadUrl) {
browser.loadURL(devloadUrl + 'drawio/webapp/export3.html').then(_ => {
})
} else {
browser.loadFile('./public/drawio/webapp/export3.html').then(_ => {
})
}
const contents = browser.webContents;
let pageByPage = (args.format == 'pdf' && !args.print), from, to, pdfs;
if (pageByPage) {
from = args.allPages ? 0 : parseInt(args.from || 0);
to = args.allPages ? 1000 : parseInt(args.to || 1000) + 1; //The 'to' will be corrected later
pdfs = [];
args.from = from;
args.to = from;
args.allPages = false;
}
contents.on('did-finish-load', function () {
//Set finalize here since it is call in the reply below
function finalize() {
browser.destroy();
}
if (directFinalize === true) {
event.finalize = finalize;
} else {
//Destroy the window after response being received by caller
ipcMain.once('export-finalize', finalize);
}
function renderingFinishHandler(evt, renderInfo) {
if (renderInfo == null) {
event.reply('export-error');
return;
}
let pageCount = renderInfo.pageCount, bounds = null;
//For some reason, Electron 9 doesn't send this object as is without stringifying. Usually when variable is external to function own scope
try {
bounds = JSON.parse(renderInfo.bounds);
} catch (e) {
bounds = null;
}
let pdfOptions = {pageSize: 'A4'};
let hasError = false;
if (bounds == null || bounds.width < 5 || bounds.height < 5) //very small page size never return from printToPDF
{
//A workaround to detect errors in the input file or being empty file
hasError = true;
} else {
pdfOptions = {
printBackground: true,
pageSize: {
width: bounds.width / PIXELS_PER_INCH,
height: (bounds.height + 2) / PIXELS_PER_INCH //the extra 2 pixels to prevent adding an extra empty page
},
margins: {
top: 0,
bottom: 0,
left: 0,
right: 0
} // no margin
}
}
let base64encoded = args.base64 == '1';
if (hasError) {
event.reply('export-error');
} else if (args.format == 'png' || args.format == 'jpg' || args.format == 'jpeg') {
//Adds an extra pixel to prevent scrollbars from showing
let newBounds = {
width: Math.ceil(bounds.width + bounds.x) + 1,
height: Math.ceil(bounds.height + bounds.y) + 1
};
browser.setBounds(newBounds);
//TODO The browser takes sometime to show the graph (also after resize it takes some time to render)
// 1 sec is most probably enough (for small images, 5 for large ones) BUT not a stable solution
setTimeout(function () {
browser.capturePage().then(function (img) {
//Image is double the given bounds, so resize is needed!
let tScale = 1;
//If user defined width and/or height, enforce it precisely here. Height override width
if (args.h) {
tScale = args.h / newBounds.height;
} else if (args.w) {
tScale = args.w / newBounds.width;
}
newBounds.width *= tScale;
newBounds.height *= tScale;
img = img.resize(newBounds);
let data = args.format == 'png' ? img.toPNG() : img.toJPEG(args.jpegQuality || 90);
if (args.dpi != null && args.format == 'png') {
data = writePngWithText(data, 'dpi', args.dpi);
}
if (args.embedXml == "1" && args.format == 'png') {
data = writePngWithText(data, "mxGraphModel", args.xml, true,
base64encoded);
} else {
if (base64encoded) {
data = data.toString('base64');
}
}
event.reply('export-success', data);
});
}, bounds.width * bounds.height < LARGE_IMAGE_AREA ? 1000 : 5000);
} else if (args.format == 'pdf') {
if (args.print) {
pdfOptions = {
scaleFactor: args.pageScale,
printBackground: true,
pageSize: {
width: args.pageWidth * MICRON_TO_PIXEL,
//This height adjustment fixes the output. TODO Test more cases
height: (args.pageHeight * 1.025) * MICRON_TO_PIXEL
},
marginsType: 1 // no margin
};
contents.print(pdfOptions, (success, errorType) => {
//Consider all as success
event.reply('export-success', {});
});
} else {
contents.printToPDF(pdfOptions).then(async (data) => {
pdfs.push(data);
to = to > pageCount ? pageCount : to;
from++;
if (from < to) {
args.from = from;
args.to = from;
ipcMain.once('render-finished', renderingFinishHandler);
contents.send('render', args);
} else {
data = await mergePdfs(pdfs, args.embedXml == '1' ? args.xml : null);
event.reply('export-success', data);
}
})
.catch((error) => {
event.reply('export-error', error);
});
}
} else if (args.format == 'svg') {
contents.send('get-svg-data');
ipcMain.once('svg-data', (evt, data) => {
event.reply('export-success', data);
});
} else {
event.reply('export-error', 'Error: Unsupported format');
}
}
ipcMain.once('render-finished', renderingFinishHandler);
if (args.format == 'xml') {
ipcMain.once('xml-data', (evt, data) => {
event.reply('export-success', data);
});
ipcMain.once('xml-data-error', () => {
event.reply('export-error');
});
}
args.border = args.border || 0;
args.scale = args.scale || 1;
contents.send('render', args);
});
} catch (e) {
if (browser != null) {
browser.destroy();
}
event.reply('export-error', e);
console.log('export-error', e);
}
}
ipcMain.on('export', exportDiagram);
//================================================================
// Renderer Helper functions
//================================================================
const {O_SYNC, O_CREAT, O_WRONLY, O_TRUNC, O_RDONLY} = fs.constants;
const DRAFT_PREFEX = '.$';
const OLD_DRAFT_PREFEX = '~$';
const DRAFT_EXT = '.dtmp';
const BKP_PREFEX = '.$';
const OLD_BKP_PREFEX = '~$';
const BKP_EXT = '.bkp';
/**
* Checks the file content type
* Confirm content is xml, pdf, png, jpg, svg, vsdx ...
*/
function checkFileContent(body, enc) {
if (body != null) {
let head, headBinay;
if (typeof body === 'string') {
if (enc == 'base64') {
headBinay = Buffer.from(body.substring(0, 22), 'base64');
head = headBinay.toString();
} else {
head = body.substring(0, 16);
headBinay = Buffer.from(head);
}
} else {
head = new TextDecoder("utf-8").decode(body.subarray(0, 16));
headBinay = body;
}
let c1 = head[0],
c2 = head[1],
c3 = head[2],
c4 = head[3],
c5 = head[4],
c6 = head[5],
c7 = head[6],
c8 = head[7],
c9 = head[8],
c10 = head[9],
c11 = head[10],
c12 = head[11],
c13 = head[12],
c14 = head[13],
c15 = head[14],
c16 = head[15];
let cc1 = headBinay[0],
cc2 = headBinay[1],
cc3 = headBinay[2],
cc4 = headBinay[3],
cc5 = headBinay[4],
cc6 = headBinay[5],
cc7 = headBinay[6],
cc8 = headBinay[7],
cc9 = headBinay[8],
cc10 = headBinay[9],
cc11 = headBinay[10],
cc12 = headBinay[11],
cc13 = headBinay[12],
cc14 = headBinay[13],
cc15 = headBinay[14],
cc16 = headBinay[15];
if (c1 == '<') {
// text/html
if (c2 == '!'
|| ((c2 == 'h'
&& (c3 == 't' && c4 == 'm' && c5 == 'l'
|| c3 == 'e' && c4 == 'a' && c5 == 'd')
|| (c2 == 'b' && c3 == 'o' && c4 == 'd'
&& c5 == 'y')))
|| ((c2 == 'H'
&& (c3 == 'T' && c4 == 'M' && c5 == 'L'
|| c3 == 'E' && c4 == 'A' && c5 == 'D')
|| (c2 == 'B' && c3 == 'O' && c4 == 'D'
&& c5 == 'Y')))) {
return true;
}
// application/xml
if (c2 == '?' && c3 == 'x' && c4 == 'm' && c5 == 'l'
&& c6 == ' ') {
return true;
}
// application/svg+xml
if (c2 == 's' && c3 == 'v' && c4 == 'g' && c5 == ' ') {
return true;
}
}
// big and little (identical) endian UTF-8 encodings, with BOM
// application/xml
if (cc1 == 0xef && cc2 == 0xbb && cc3 == 0xbf) {
if (c4 == '<' && c5 == '?' && c6 == 'x') {
return true;
}
}
// big and little endian UTF-16 encodings, with byte order mark
// application/xml
if (cc1 == 0xfe && cc2 == 0xff) {
if (cc3 == 0 && c4 == '<' && cc5 == 0 && c6 == '?' && cc7 == 0
&& c8 == 'x') {
return true;
}
}
// application/xml
if (cc1 == 0xff && cc2 == 0xfe) {
if (c3 == '<' && cc4 == 0 && c5 == '?' && cc6 == 0 && c7 == 'x'
&& cc8 == 0) {
return true;
}
}
// big and little endian UTF-32 encodings, with BOM
// application/xml
if (cc1 == 0x00 && cc2 == 0x00 && cc3 == 0xfe && cc4 == 0xff) {
if (cc5 == 0 && cc6 == 0 && cc7 == 0 && c8 == '<' && cc9 == 0
&& cc10 == 0 && cc11 == 0 && c12 == '?' && cc13 == 0
&& cc14 == 0 && cc15 == 0 && c16 == 'x') {
return true;
}
}
// application/xml
if (cc1 == 0xff && cc2 == 0xfe && cc3 == 0x00 && cc4 == 0x00) {
if (c5 == '<' && cc6 == 0 && cc7 == 0 && cc8 == 0 && c9 == '?'
&& cc10 == 0 && cc11 == 0 && cc12 == 0 && c13 == 'x'
&& cc14 == 0 && cc15 == 0 && cc16 == 0) {
return true;
}
}
// application/pdf (%PDF-)
if (cc1 == 37 && cc2 == 80 && cc3 == 68 && cc4 == 70 && cc5 == 45) {
return true;
}
// image/png
if ((cc1 == 137 && cc2 == 80 && cc3 == 78 && cc4 == 71 && cc5 == 13
&& cc6 == 10 && cc7 == 26 && cc8 == 10) ||
(cc1 == 194 && cc2 == 137 && cc3 == 80 && cc4 == 78 && cc5 == 71 && cc6 == 13 //Our embedded PNG+XML
&& cc7 == 10 && cc8 == 26 && cc9 == 10)) {
return true;
}
// image/jpeg
if (cc1 == 0xFF && cc2 == 0xD8 && cc3 == 0xFF) {
if (cc4 == 0xE0 || cc4 == 0xEE) {
return true;
}
/**
* File format used by digital cameras to store images.
* Exif Format can be read by any application supporting
* JPEG. Exif Spec can be found at:
* http://www.pima.net/standards/it10/PIMA15740/Exif_2-1.PDF
*/
if ((cc4 == 0xE1) && (c7 == 'E' && c8 == 'x' && c9 == 'i'
&& c10 == 'f' && cc11 == 0)) {
return true;
}
}
// vsdx, vssx (also zip, jar, odt, ods, odp, docx, xlsx, pptx, apk, aar)
if (cc1 == 0x50 && cc2 == 0x4B && cc3 == 0x03 && cc4 == 0x04) {
return true;
} else if (cc1 == 0x50 && cc2 == 0x4B && cc3 == 0x03 && cc4 == 0x06) {
return true;
}
// mxfile, mxlibrary, mxGraphModel
if (c1 == '<' && c2 == 'm' && c3 == 'x') {
return true;
}
}
return false;
}
function isConflict(origStat, stat) {
return stat != null && origStat != null && stat.mtimeMs != origStat.mtimeMs;
}
function getDraftFileName(fileObject) {
let filePath = fileObject.path;
let draftFileName = '', counter = 1, uniquePart = '';
do {
draftFileName = path.join(path.dirname(filePath), DRAFT_PREFEX + path.basename(filePath) + uniquePart + DRAFT_EXT);
uniquePart = '_' + counter++;
} while (fs.existsSync(draftFileName));
return draftFileName;
}
async function getFileDrafts(fileObject) {
let filePath = fileObject.path;
let draftsPaths = [], drafts = [], draftFileName, counter = 1, uniquePart = '';
do {
draftsPaths.push(draftFileName);
draftFileName = path.join(path.dirname(filePath), DRAFT_PREFEX + path.basename(filePath) + uniquePart + DRAFT_EXT);
uniquePart = '_' + counter++;
} while (fs.existsSync(draftFileName)); //TODO this assume continuous drafts names
//Port old draft files to new prefex
counter = 1;
uniquePart = '';
let draftExists = false;
do {
draftFileName = path.join(path.dirname(filePath), OLD_DRAFT_PREFEX + path.basename(filePath) + uniquePart + DRAFT_EXT);
draftExists = fs.existsSync(draftFileName);
if (draftExists) {
const newDraftFileName = path.join(path.dirname(filePath), DRAFT_PREFEX + path.basename(filePath) + uniquePart + DRAFT_EXT);
await fsProm.rename(draftFileName, newDraftFileName);
draftsPaths.push(newDraftFileName);
}
uniquePart = '_' + counter++;
} while (draftExists); //TODO this assume continuous drafts names
//Skip the first null element
for (let i = 1; i < draftsPaths.length; i++) {
try {
let stat = await fsProm.lstat(draftsPaths[i]);
drafts.push({
data: await fsProm.readFile(draftsPaths[i], 'utf8'),
created: stat.ctimeMs,
modified: stat.mtimeMs,
path: draftsPaths[i]
});
} catch (e) {
} // Ignore
}
return drafts;
}
async function saveDraft(fileObject, data) {
if (!checkFileContent(data)) {
throw new Error('Invalid file data');
} else {
let draftFileName = fileObject.draftFileName || getDraftFileName(fileObject);
await fsProm.writeFile(draftFileName, data, 'utf8');
if (isWin) {
try {
// Add Hidden attribute:
spawn('attrib', ['+h', draftFileName], {shell: true});
} catch (e) {
}
}
return draftFileName;
}
}
async function saveFile(fileObject, data, origStat, overwrite, defEnc) {
if (!checkFileContent(data)) {
throw new Error('Invalid file data');
}
let retryCount = 0;
let backupCreated = false;
let bkpPath = path.join(path.dirname(fileObject.path), BKP_PREFEX + path.basename(fileObject.path) + BKP_EXT);
const oldBkpPath = path.join(path.dirname(fileObject.path), OLD_BKP_PREFEX + path.basename(fileObject.path) + BKP_EXT);
let writeEnc = defEnc || fileObject.encoding;
let writeFile = async function () {
let fh;
try {
// O_SYNC is for sync I/O and reduce risk of file corruption
fh = await fsProm.open(fileObject.path, O_SYNC | O_CREAT | O_WRONLY | O_TRUNC);
await fsProm.writeFile(fh, data, writeEnc);
} finally {
await fh?.close();
}
let stat2 = await fsProm.stat(fileObject.path);
// Workaround for possible writing errors is to check the written
// contents of the file and retry 3 times before showing an error
let writtenData = await fsProm.readFile(fileObject.path, writeEnc);
if (data != writtenData) {
retryCount++;
if (retryCount < 3) {
return await writeFile();
} else {
throw new Error('all saving trials failed');
}
} else {
//We'll keep the backup file in case the original file is corrupted. TODO When should we delete the backup file?
if (backupCreated) {
//fs.unlink(bkpPath, (err) => {}); //Ignore errors!
//Delete old backup file with old prefix
if (fs.existsSync(oldBkpPath)) {
fs.unlink(oldBkpPath, (err) => {
}); //Ignore errors
}
}
return stat2;
}
};
async function doSaveFile(isNew) {
if (enableStoreBkp && !isNew) {
//Copy file to backup file (after conflict and stat is checked)
let bkpFh;
try {
//Use file read then write to open the backup file direct sync write to reduce the chance of file corruption
let fileContent = await fsProm.readFile(fileObject.path, writeEnc);
bkpFh = await fsProm.open(bkpPath, O_SYNC | O_CREAT | O_WRONLY | O_TRUNC);
await fsProm.writeFile(bkpFh, fileContent, writeEnc);
backupCreated = true;
} catch (e) {
if (__DEV__) {
console.log('Backup file writing failed', e); //Ignore
}
} finally {
await bkpFh?.close();
if (isWin) {
try {
// Add Hidden attribute:
spawn('attrib', ['+h', bkpPath], {shell: true});
} catch (e) {
}
}
}
}
return await writeFile();
}
if (overwrite) {
return await doSaveFile(true);
} else {
let stat = fs.existsSync(fileObject.path) ?
await fsProm.stat(fileObject.path) : null;
if (stat && isConflict(origStat, stat)) {
throw new Error('conflict');
} else {
return await doSaveFile(stat == null);
}
}
}
async function writeFile(path, data, enc) {
if (!checkFileContent(data, enc)) {
throw new Error('Invalid file data');
} else {
return await fsProm.writeFile(path, data, enc);
}
}
function getAppDataFolder() {
try {
let appDataDir = app.getPath('appData');
let drawioDir = appDataDir + '/' + config.name;
if (!fs.existsSync(drawioDir)) //Usually this dir already exists
{
fs.mkdirSync(drawioDir);
}
return drawioDir;
} catch (e) {
}
return '.';
}
function getDocumentsFolder() {
//On windows, misconfigured Documents folder cause an exception
try {
return app.getPath('documents');
} catch (e) {
}
return '.';
}
function checkFileExists(pathParts) {
let filePath = path.join(...pathParts);
return {exists: fs.existsSync(filePath), path: filePath};
}
async function showOpenDialog(defaultPath, filters, properties) {
let win = BrowserWindow.getFocusedWindow();
return dialog.showOpenDialog(win, {
defaultPath: defaultPath,
filters: filters,
properties: properties
});
}
async function showSaveDialog(defaultPath, filters) {
let win = BrowserWindow.getFocusedWindow();
return dialog.showSaveDialog(win, {
defaultPath: defaultPath,
filters: filters
});
}
async function installPlugin(filePath) {
if (!enablePlugins) return {};
let pluginsDir = path.join(getAppDataFolder(), '/plugins');
if (!fs.existsSync(pluginsDir)) {
fs.mkdirSync(pluginsDir);
}
let pluginName = path.basename(filePath);
let dstFile = path.join(pluginsDir, pluginName);
if (fs.existsSync(dstFile)) {
throw new Error('fileExists');
} else {
await fsProm.copyFile(filePath, dstFile);
}
return {pluginName: pluginName, selDir: path.dirname(filePath)};
}
function getPluginFile(plugin) {
if (!enablePlugins) return null;
const prefix = path.join(getAppDataFolder(), '/plugins/');
const pluginFile = path.join(prefix, plugin);
if (pluginFile.startsWith(prefix) && fs.existsSync(pluginFile)) {
return pluginFile;
}
return null;
}
function uninstallPlugin(plugin) {
const pluginFile = getPluginFile(plugin);
if (pluginFile != null) {
fs.unlinkSync(pluginFile);
}
}
function dirname(path_p) {
return path.dirname(path_p);
}
async function readFile(filename, encoding) {
let data = await fsProm.readFile(filename, encoding);
if (checkFileContent(data, encoding)) {
return data;
}
throw new Error('Invalid file data');
}
async function fileStat(file) {
return await fsProm.stat(file);
}
async function isFileWritable(file) {
try {
await fsProm.access(file, fs.constants.W_OK);
return true;
} catch (e) {
return false;
}
}
function clipboardAction(method, data) {
if (method == 'writeText') {
clipboard.writeText(data);
} else if (method == 'readText') {
return clipboard.readText();
} else if (method == 'writeImage') {
clipboard.write({
image:
nativeImage.createFromDataURL(data.dataUrl), html: '<img src="' +
data.dataUrl + '" width="' + data.w + '" height="' + data.h + '">'
});
}
}
async function deleteFile(file) {
// Reading the header of the file to confirm it is a file we can delete
let fh = await fsProm.open(file, O_RDONLY);
let buffer = Buffer.allocUnsafe(16);
await fh.read(buffer, 0, 16);
await fh.close();
if (checkFileContent(buffer)) {
await fsProm.unlink(file);
}
}
function windowAction(method) {
let win = BrowserWindow.getFocusedWindow();
if (win) {
if (method == 'minimize') {
win.minimize();
} else if (method == 'maximize') {
win.maximize();
} else if (method == 'unmaximize') {
win.unmaximize();
} else if (method == 'close') {
win.close();
} else if (method == 'isMaximized') {
return win.isMaximized();
} else if (method == 'removeAllListeners') {
win.removeAllListeners();
}
}
}
function openExternal(url) {
//Only open http(s), mailto, tel, and callto links
if (allowedUrls.test(url)) {
shell.openExternal(url);
return true;
}
return false;
}
function watchFile(path) {
let win = BrowserWindow.getFocusedWindow();
if (win) {
fs.watchFile(path, (curr, prev) => {
try {
win.webContents.send('fileChanged', {
path: path,
curr: curr,
prev: prev
});
} catch (e) {
} // Ignore
});
}
}
function unwatchFile(path) {
fs.unwatchFile(path);
}
function getCurDir() {
return __dirname;
}
ipcMain.on("rendererReq", async (event, args) => {
try {
let ret = null;
switch (args.action) {
case 'saveFile':
ret = await saveFile(args.fileObject, args.data, args.origStat, args.overwrite, args.defEnc);
break;
case 'writeFile':
ret = await writeFile(args.path, args.data, args.enc);
break;
case 'saveDraft':
ret = await saveDraft(args.fileObject, args.data);
break;
case 'getFileDrafts':
ret = await getFileDrafts(args.fileObject);
break;
case 'getDocumentsFolder':
ret = await getDocumentsFolder();
break;
case 'checkFileExists':
ret = await checkFileExists(args.pathParts);
break;
case 'showOpenDialog':
dialogOpen = true;
ret = await showOpenDialog(args.defaultPath, args.filters, args.properties);
ret = ret.filePaths;
dialogOpen = false;
break;
case 'showSaveDialog':
dialogOpen = true;
ret = await showSaveDialog(args.defaultPath, args.filters);
ret = ret.canceled ? null : ret.filePath;
dialogOpen = false;
break;
case 'installPlugin':
ret = await installPlugin(args.filePath);
break;
case 'uninstallPlugin':
ret = await uninstallPlugin(args.plugin);
break;
case 'getPluginFile':
ret = await getPluginFile(args.plugin);
break;
case 'isPluginsEnabled':
ret = enablePlugins;
break;
case 'dirname':
ret = await dirname(args.path);
break;
case 'readFile':
ret = await readFile(args.filename, args.encoding);
break;
case 'clipboardAction':
ret = await clipboardAction(args.method, args.data);
break;
case 'deleteFile':
ret = await deleteFile(args.file);
break;
case 'fileStat':
ret = await fileStat(args.file);
break;
case 'isFileWritable':
ret = await isFileWritable(args.file);
break;
case 'windowAction':
ret = await windowAction(args.method);
break;
case 'openExternal':
ret = await openExternal(args.url);
break;
case 'watchFile':
ret = await watchFile(args.path);
break;
case 'unwatchFile':
ret = await unwatchFile(args.path);
break;
case 'getCurDir':
ret = await getCurDir();
break;
}
event.reply('mainResp', {success: true, data: ret, reqId: args.reqId});
} catch (e) {
event.reply('mainResp', {error: true, msg: e.message, e: e, reqId: args.reqId});
}
});