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refactor: cleanup web-frame-init.js (#14516)

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* refactor: add error-utils.js

* fix exception handling for asyncWebFrameMethods

* remove dead code

* handle exceptions

* rename rehydratedError to deserializedError

* Revert "handle exceptions"

This reverts commit 396b179948b137f9e525e9ebba4f7c6e9bf19429.
This commit is contained in:
Milan Burda 2018-09-11 11:56:00 +02:00 committed by Samuel Attard
parent 38419e3a6a
commit 0821edc843
4 changed files with 53 additions and 65 deletions
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1
filenames.gni
View file

@ -56,6 +56,7 @@ filenames = {
"lib/common/api/shell.js",
"lib/common/atom-binding-setup.js",
"lib/common/buffer-utils.js",
"lib/common/error-utils.js",
"lib/common/init.js",
"lib/common/parse-features-string.js",
"lib/common/reset-search-paths.js",

37
lib/browser/api/web-contents.js
View file

@ -6,6 +6,8 @@ const path = require('path')
const url = require('url')
const {app, ipcMain, session, NavigationController, deprecate} = electron
const errorUtils = require('../../common/error-utils')
// session is not used here, the purpose is to make sure session is initalized
// before the webContents module.
// eslint-disable-next-line
@ -111,17 +113,6 @@ const webFrameMethods = [
'setLayoutZoomLevelLimits',
'setVisualZoomLevelLimits'
]
const webFrameMethodsWithResult = []
const errorConstructors = {
Error,
EvalError,
RangeError,
ReferenceError,
SyntaxError,
TypeError,
URIError
}
const asyncWebFrameMethods = function (requestId, method, callback, ...args) {
return new Promise((resolve, reject) => {
@ -131,40 +122,18 @@ const asyncWebFrameMethods = function (requestId, method, callback, ...args) {
if (typeof callback === 'function') callback(result)
resolve(result)
} else {
if (error.__ELECTRON_SERIALIZED_ERROR__ && errorConstructors[error.name]) {
const rehydratedError = new errorConstructors[error.name](error.message)
rehydratedError.stack = error.stack
reject(rehydratedError)
} else {
reject(error)
}
reject(errorUtils.deserialize(error))
}
})
})
}
const syncWebFrameMethods = function (requestId, method, callback, ...args) {
this.send('ELECTRON_INTERNAL_RENDERER_SYNC_WEB_FRAME_METHOD', requestId, method, args)
ipcMain.once(`ELECTRON_INTERNAL_BROWSER_SYNC_WEB_FRAME_RESPONSE_${requestId}`, function (event, result) {
if (callback) callback(result)
})
}
for (const method of webFrameMethods) {
WebContents.prototype[method] = function (...args) {
this.send('ELECTRON_INTERNAL_RENDERER_WEB_FRAME_METHOD', method, args)
}
}
for (const method of webFrameMethodsWithResult) {
WebContents.prototype[method] = function (...args) {
const callback = args[args.length - 1]
const actualArgs = args.slice(0, args.length - 2)
syncWebFrameMethods.call(this, getNextId(), method, callback, ...actualArgs)
}
}
// Make sure WebContents::executeJavaScript would run the code only when the
// WebContents has been loaded.
WebContents.prototype.executeJavaScript = function (code, hasUserGesture, callback) {

35
lib/common/error-utils.js Normal file
View file

@ -0,0 +1,35 @@
'use strict'
const constructors = new Map([
[Error.name, Error],
[EvalError.name, EvalError],
[RangeError.name, RangeError],
[ReferenceError.name, ReferenceError],
[SyntaxError.name, SyntaxError],
[TypeError.name, TypeError],
[URIError.name, URIError]
])
exports.deserialize = function (error) {
if (error.__ELECTRON_SERIALIZED_ERROR__ && constructors.has(error.name)) {
const constructor = constructors.get(error.name)
const deserializedError = new constructor(error.message)
deserializedError.stack = error.stack
return deserializedError
}
return error
}
exports.serialize = function (error) {
if (error instanceof Error) {
// Errors get lost, because: JSON.stringify(new Error('Message')) === {}
// Take the serializable properties and construct a generic object
return {
message: error.message,
stack: error.stack,
name: error.name,
__ELECTRON_SERIALIZED_ERROR__: true
}
}
return error
}

45
lib/renderer/web-frame-init.js
View file

@ -1,38 +1,21 @@
const electron = require('electron')
const {ipcRenderer, webFrame} = require('electron')
const errorUtils = require('../common/error-utils')
module.exports = () => {
// Call webFrame method
electron.ipcRenderer.on('ELECTRON_INTERNAL_RENDERER_WEB_FRAME_METHOD', (event, method, args) => {
electron.webFrame[method](...args)
ipcRenderer.on('ELECTRON_INTERNAL_RENDERER_WEB_FRAME_METHOD', (event, method, args) => {
webFrame[method](...args)
})
electron.ipcRenderer.on('ELECTRON_INTERNAL_RENDERER_SYNC_WEB_FRAME_METHOD', (event, requestId, method, args) => {
const result = electron.webFrame[method](...args)
event.sender.send(`ELECTRON_INTERNAL_BROWSER_SYNC_WEB_FRAME_RESPONSE_${requestId}`, result)
})
electron.ipcRenderer.on('ELECTRON_INTERNAL_RENDERER_ASYNC_WEB_FRAME_METHOD', (event, requestId, method, args) => {
const responseCallback = function (result) {
Promise.resolve(result)
.then((resolvedResult) => {
event.sender.send(`ELECTRON_INTERNAL_BROWSER_ASYNC_WEB_FRAME_RESPONSE_${requestId}`, null, resolvedResult)
})
.catch((resolvedError) => {
if (resolvedError instanceof Error) {
// Errors get lost, because: JSON.stringify(new Error('Message')) === {}
// Take the serializable properties and construct a generic object
resolvedError = {
message: resolvedError.message,
stack: resolvedError.stack,
name: resolvedError.name,
__ELECTRON_SERIALIZED_ERROR__: true
}
}
event.sender.send(`ELECTRON_INTERNAL_BROWSER_ASYNC_WEB_FRAME_RESPONSE_${requestId}`, resolvedError)
})
}
args.push(responseCallback)
electron.webFrame[method](...args)
ipcRenderer.on('ELECTRON_INTERNAL_RENDERER_ASYNC_WEB_FRAME_METHOD', (event, requestId, method, args) => {
new Promise(resolve =>
webFrame[method](...args, resolve)
).then(result => {
return [null, result]
}, error => {
return [errorUtils.serialize(error)]
}).then(responseArgs => {
event.sender.send(`ELECTRON_INTERNAL_BROWSER_ASYNC_WEB_FRAME_RESPONSE_${requestId}`, ...responseArgs)
})
})
}