erickzhao/index.html

## index.html
<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <title>Hello World!</title>
    <link rel="stylesheet" type="text/css" href="./styles.css">
  </head>
  <body>
    <button id="save">Save File</button>


    <script>
      // You can also require other files to run in this process
      require('./renderer.js')
    </script>
  </body>
</html>

## main.js
const {app, BrowserWindow, dialog, ipcMain} = require('electron')
const fs = require('fs');
const http = require('http');
const path = require('path');

function createWindow() {
  // Create the browser window.
  const mainWindow = new BrowserWindow({
    width: 800,
    height: 600,
    webPreferences: {
      nodeIntegration: true
    }
  })

  // and load the index.html of the app.
  mainWindow.loadFile('index.html')

  // use IPC to communicate from renderer to main
  // that we want to open a dialog and save the file
  ipcMain.on('download-file', () => {
    const filePath = dialog.showSaveDialogSync(mainWindow, {
      defaultPath: path.join(app.getPath('downloads'), "file.jpg")
    });
    download(filePath);
  })

}

// handles download of file given a path
function download(filePath) {
  const file = fs.createWriteStream(filePath);
  // hardcoded image for now, can replace with any file
  http.get("http://i3.ytimg.com/vi/J---aiyznGQ/mqdefault.jpg",
    (response) => {
      response.pipe(file);
    }
  );
}

app.on('ready', createWindow)

// Quit when all windows are closed.
app.on('window-all-closed', function () {
  // On OS X it is common for applications and their menu bar
  // to stay active until the user quits explicitly with Cmd + Q
  if (process.platform !== 'darwin') {
    app.quit()
  }
})

app.on('activate', function () {
  // On OS X it's common to re-create a window in the app when the
  // dock icon is clicked and there are no other windows open.
  if (BrowserWindow.getAllWindows().length === 0) {
    createWindow()
  }
})

## preload.js
// Empty

## renderer.js
const { ipcRenderer } = require('electron');

const button = document.getElementById('save');

button.addEventListener('click', () => {
  ipcRenderer.send('download-file')
});


## styles.css
/* Empty */
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="UTF-8">
	<title>Hello World!</title>
	<link rel="stylesheet" type="text/css" href="./styles.css">
	</head>
	<body>
	<button id="save">Save File</button>


	<script>
	// You can also require other files to run in this process
	require('./renderer.js')
	</script>
	</body>
	</html>
	const {app, BrowserWindow, dialog, ipcMain} = require('electron')
	const fs = require('fs');
	const http = require('http');
	const path = require('path');

	function createWindow() {
	// Create the browser window.
	const mainWindow = new BrowserWindow({
	width: 800,
	height: 600,
	webPreferences: {
	nodeIntegration: true
	}
	})

	// and load the index.html of the app.
	mainWindow.loadFile('index.html')

	// use IPC to communicate from renderer to main
	// that we want to open a dialog and save the file
	ipcMain.on('download-file', () => {
	const filePath = dialog.showSaveDialogSync(mainWindow, {
	defaultPath: path.join(app.getPath('downloads'), "file.jpg")
	});
	download(filePath);
	})

	}

	// handles download of file given a path
	function download(filePath) {
	const file = fs.createWriteStream(filePath);
	// hardcoded image for now, can replace with any file
	http.get("http://i3.ytimg.com/vi/J---aiyznGQ/mqdefault.jpg",
	(response) => {
	response.pipe(file);
	}
	);
	}

	app.on('ready', createWindow)

	// Quit when all windows are closed.
	app.on('window-all-closed', function () {
	// On OS X it is common for applications and their menu bar
	// to stay active until the user quits explicitly with Cmd + Q
	if (process.platform !== 'darwin') {
	app.quit()
	}
	})

	app.on('activate', function () {
	// On OS X it's common to re-create a window in the app when the
	// dock icon is clicked and there are no other windows open.
	if (BrowserWindow.getAllWindows().length === 0) {
	createWindow()
	}
	})
	const { ipcRenderer } = require('electron');

	const button = document.getElementById('save');

	button.addEventListener('click', () => {
	ipcRenderer.send('download-file')
	});