GWT or Javascript? A Vaadin expert's opinion. by Haijian Wang

GWT or Javascript? A Vaadin expert's opinion. by Haijian Wang
#GWTcon2016 - Firenze 14-15th November 2016

Transcript

1. G W T O R J A V A S C R I P T ? A V A A D I N E X P E R T ’ S O P I N I O N H A I J I A N W A N G
2. Is GWT Dying? Scary Questions First Should I use JavaScript Instead?
3. Scary Questions First Too Scary to answer
4. Let’s limit the scope to Vaadin application Too Scary to answer
5. What is Vaadin? A Java web framework for building Web applications.
6. A What is Vaadin? Server Side Java web framework for building Web applications.
7. How does Vaadin application look like?
8. Vaadin Application Architecture
9. GWT or JavaScript? Custom Widget: two approaches
10. •Language Preference •Community Support •Development Speed •Requirement Considerations
11. Language Preference JavaScript sucks?https://www.youtube.com/watch?v=xE8tL8NdHaY Or not.
12. Community Support
13. Development Speed •Widgetset Compilation •Debugging
14. Requirement Case studies •Workflow canvas in SVG •Disable backspace navigation
15. Workflow Canvas in SVG
16. Workflow Canvas in SVG raphael4gwt ->Snap.svg -> Raphaël?
17. Disable backspace navigation Event.addNativePreviewHandler(new NativePreviewHandler() { @Override public void onPreviewNativeEvent(NativePreviewEvent event) { if(event.getNativeEvent().getKeyCode() == KeyCodes.KEY_BACKSPACE) { if(!WidgetUtil.isFocusedElementEditable()) { event.getNativeEvent().stopPropagation(); event.getNativeEvent().preventDefault(); } } } });
18. Disable backspace navigation It’s now disabled by default since Chrome 52.
19. Conclusion •GWT is NOT dead. •It’s fun to learn some JavaScript. •Choose whichever fits you best.
20. Q U E S T I O N S ?
21. G R A Z I E