feat(changelog): changelog inside application

src/background/background.js

@@ -6,10 +6,12 @@
 import path from "path";
 import url from "url";
 import { app, Menu, ipcMain, Tray } from "electron";
+import createWindow from "./helpers/window";
+
 import { devMenuTemplate } from "./menu/dev_menu_template";
 import { editMenuTemplate } from "./menu/edit_menu_template";
 import { settingsMenuTemplate } from "./menu/config_menu_template";
-import createWindow from "./helpers/window";
+import { aboutMenuTemplate } from "./menu/about_menu_template";
 
 // Special module holding environment variables which you declared
 // in config/env_xxx.json file.
@@ -19,7 +21,7 @@ const { spawn, exec } = require('child_process')
 const fs = require('fs')
 
 const setApplicationMenu = () => {
-  const menus = [editMenuTemplate, settingsMenuTemplate];
+  const menus = [editMenuTemplate, settingsMenuTemplate, aboutMenuTemplate];
   if (env.name !== "production") {
     menus.push(devMenuTemplate);
   }

src/background/menu/about_menu_template.js

@@ -0,0 +1,38 @@
+import { app, BrowserWindow, shell } from "electron";
+import path from "path";
+import url from "url";
+
+export const aboutMenuTemplate = {
+  label: "About",
+  submenu: [
+    {
+      label: "Changelog",
+      accelerator: "CmdOrCtrl+]",
+      click: () => {
+        const win = new BrowserWindow({
+          parent: BrowserWindow.getFocusedWindow(),
+          modal: true
+        })
+        win.setMenu(null)
+        win.loadURL(url.format({
+          pathname: path.join(__dirname, "app.html"),
+          protocol: "file:",
+          slashes: true
+        }))
+        win.webContents.on('did-finish-load', () => {
+          win.send('url', '/changelog')
+        });
+
+        const handleRedirect = (e, url) => {
+          if(url != win.webContents.getURL()) {
+            e.preventDefault()
+            shell.openExternal(url)
+          }
+        }
+        
+        win.webContents.on('will-navigate', handleRedirect)
+        win.webContents.on('new-window', handleRedirect)
+      }
+    }
+  ]
+};