CODEWITHSUNDEEP
vaadin
ThomasDKim
ThomasDKim

Reputation: 327

vaadin 7 - move data between sub windows

I have the main UI class with a button that shows a subwindow when clicked. That subwindow has a textField and a button. When you press the subwindow's button, another sub window opens. You could call it the sub-sub window. This sub-sub window has a textfield and a button that will close this sub-sub window. I would like to update the textfield in the subwindow when i close this sub-sub window with the textfield value on the sub-sub window. is there a way to do this without creating everything on the main UI Class? I would like to create 2 classes for these sub windows and would like to pass the data back. I got it to work by putting everything on the main UI class but i thought there would be a better way.

TIA,

Thomas Kim

Upvotes: 0

Views: 988

Answers (1)

Vojtech Ruzicka
Vojtech Ruzicka

Reputation: 17075

You can either bind all your components which acces shared data to same model, using Vaadin Data Binding or you can use Events to propagate value changes from subwindows to whichever component may be concerned.

Consider using Model View Presenter pattern to structure you view layer. There is a nice article to explain basics of MVP and its implementation in Vaadin.

https://vaadin.com/web/magi/home/-/blogs/model-view-presenter-pattern-with-vaadin

This approach will not only solve your problem, but also lead to better separated and maintable presentation layer.

Upvotes: 2

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