Table generated buttonsSubmitted on 12 February 2012
Before diving in the middle of the subject, let’s have a use-case first. Imagine we have a CRUD application and our current screen lists the datastore entities in a table, a line per entity and a column per property.
Now, in order to implement the Delete functionality, we use the
addGeneratedColumn method of the
Table component to display a “Delete” button, like in the following screenshot:
The problem lies in the action that has to take place when the button is pressed. The behavior needs to be determined when the page is generated, so that the event is processed directly on the server-side: in other words, we need a way to pass the entity identifier (or the container’s item or even the container’s item id) to the button somehow.
The solution is very simple to implement, with just the use of the
final keyword, to let nested anonymous class methods access parameters: