ControlsJS

From APIDesign

ControlsJS is a robust widgets technology for any browser including the most archaic versions of IE. It comes with fantastic tooling - browser based form editor, extensions for NetBeans and many more. The company behind [[ControlsJS] is mostly JavaScript oriented, but they are also great DukeScript supporters. As such there is also a Java version of controls.

Porting MineSweeper

Since I gave up on Apple and decided I don't want to pay that company money for nothing, I was searching for somebody who would distribute my MineSweeper application on iOS. At the end, the ControlsJS guys agreed to do it, but only if the application starts using ControlsJS. As a result of this experiment we now have two completely different UI, for the same application code:

• http://controlsjs.com/demos/minesweeper/ - the new Controls for Java version
• http://xelfi.cz/minesweeper/bck2brwsr/ - the original MineSweeper as written by me

Under the hood both versions are almost the same. They only differ in the rendering technology. All the other features - for example high portability remain:

• the iOS application: https://itunes.apple.com/us/app/controls.js-fair-minesweeper/id1110702611
• the Android version: https://play.google.com/store/apps/details?id=com.controlsjs.demo.minesweeper

Thanks a lot for providing my MineSweeper to iOS users, dear ControlsJS guys!

Write Business Logic, Choose UI later

The code for the Controls MineSweeper is available on github: https://github.com/controlsjs/minesweeper. I was curious to see what code changes were necessary to completely switch from one rendering technogy to another.

While inspecting the code I noticed that the core application logic in MinesModel.java hasn't changed at all! It doesn't make sense to count one additional property and removed goto links handling due to simplified UI. Wow!

Such extreme portability of DukeScript application is made possible by flexible design of the core annotations and absolute separation of the application logic code from the UI.

As an implication you can focus on your code, provide draft version of UI, and later, completely throw the UI away and redesign it in a much better way. Changes are high you will not touch your application code at all!

Moreover you can completely change the UI technology. Start with classical HTML4Java solution and later switch to ControlsJS - given the rich set of tools they offer including Wysiwig form editor, it may really boost your productivity.