AddRowButton Add-on

Vaadin 7 Grid does not yet have editor event. This is a small short coming if you want to create button to add a row to your grid with the following logic

1. Click button to add a row
2. Activate editor on the new row
3. Delete row if user selected to click cancel instead of save

Hence I wrote this experimental add-on, which encapsulates needed logic in form of extended Vaadin Button.

Notes

• Works currently only with BeanItemContainer
• Uses threads, hence Push needs to be enabled
• Beans used with AddRowButton must have default constructor without parameters in order to intanstiate
• Doesn't work with Vaadin 7.6.1 - 7.6.2 due layout bug in Editor
• Doesn't work with Vaadin 7.5.4 and older due bug Grid row book keeping

Status of this utility is experimental. I hope this is also useful demo case how to work with Vaadin using threads.

Usage:

Setup the Grid first.

Usage

• Create new AddRowButton using its constructor.

AddRowButton button = new AddRowButton(String caption, Grid grid,Class<?> MyBean.class);

caption: the caption of the button MyBean: the beantype of your bean grid: the grid you use this utility with