const { BrowserWindow } = require('electron');
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const fs = require('fs');
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const LoadView = require('./loadView');
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const Loader = require('../../loader');
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class RendererJob {
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/**
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* constructor
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* @param {String} name - job name
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* @param {String} filepath - filepath to file
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* @param {Object} options - options to create BrowserWindow
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*/
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constructor(name, filepath, opt = {}) {
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// TODO Object.assign 只能单层对象结构，多层的对象会直接覆盖
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let options = Object.assign({
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show: false,
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webPreferences: {
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webSecurity: true,
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nodeIntegration: true,
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contextIsolation: false,
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//enableRemoteModule: true
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}
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}, opt);
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this.subWin = new BrowserWindow(options);
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this.jobReady = false;
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this.exec = Loader.getFullpath(filepath);;
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this.name = name;
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this.listeners = [];
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this.callbacks = [];
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this.fails = [];
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this.id = this.subWin.id;
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this.webSecurity = options.webPreferences.webSecurity;
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// this.callbacks.push(() => {
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// MessageChannel.registry(name, this.id, this.subWin.webContents.getOSProcessId());
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// });
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// job state listener
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this.subWin.webContents.on('did-finish-load', this._didFinishLoad);
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this.subWin.webContents.on('did-fail-load', this._didFailLoad);
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// load job
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this._loadJob(this.exec);
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}
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/**
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* 显示开发者工具栏
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*/
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openDevTools() {
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this.subWin.webContents.openDevTools({
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mode: 'undocked'
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});
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}
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/**
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* 窗口加载完成，即业务代码执行完毕
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*/
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_didFinishLoad = () => {
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this.jobReady = true;
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this.callbacks.forEach(callback => {
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callback(this.id);
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});
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}
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/**
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* 窗口加载失败，即业务运行失败
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*/
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_didFailLoad = (error) => {
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this.jobReady = false;
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this.fails.forEach(handle => {
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handle(error.toString());
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});
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}
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/**
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* 加载任务
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*/
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_loadJob(filepath) {
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if (!this.webSecurity) {
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this._loadURLUnsafe(filepath);
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} else {
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this._loadURLSafe(filepath);
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}
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}
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/**
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* 安全的脚本注入
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*/
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_loadURLSafe(filepath) {
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return new Promise((resolve, reject) => {
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fs.readFile(filepath, { encoding: 'utf-8' }, (err, buffer) => {
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if (err) {
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reject(err);
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this._didFailLoad(err);
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return console.error(err);
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}
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let param = {
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webSecurity: true,
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script: buffer.toString(),
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title: `${this.name} job`,
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base: filepath
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}
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const viewData = LoadView(param);
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this.subWin.loadURL(viewData)
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.then(resolve)
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.catch(err => {
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reject(err);
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this._didFailLoad(err);
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console.error(err);
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});
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})
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})
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}
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/**
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* 不安全的脚本注入
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*/
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_loadURLUnsafe(filepath) {
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let param = {
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webSecurity: false,
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src: this.exec,
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title: `${this.name} job`,
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base: filepath
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}
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const viewData = LoadView(param);
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this.subWin.loadURL(viewData)
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.catch(err => {
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this._didFailLoad(err);
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console.error(err);
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});
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}
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}
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module.exports = RendererJob;
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