com.vaadin.ui.components.grid

Interface DropIndexCalculator<T>

Type Parameters:

T - the bean type

All Superinterfaces:

Serializable

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface DropIndexCalculator<T>
extends Serializable

A handler for calculating the index of the dropped items on the drop target grid.

Since:

8.2

Author:

Vaadin Ltd

See Also:

GridRowDragger

Method Summary

Modifier and Type	Method and Description
static <T> DropIndexCalculator<T>	alwaysDropToEnd() Returns a calculator for always dropping items to the end of the target grid, regardless of drop position.
int	calculateDropIndex(GridDropEvent<T> event) Called when Items are dropped onto a target grid.

Method Detail

alwaysDropToEnd

static <T> DropIndexCalculator<T> alwaysDropToEnd()

Returns a calculator for always dropping items to the end of the target grid, regardless of drop position.

Returns:

the created drop index calculator

calculateDropIndex

int calculateDropIndex(GridDropEvent<T> event)

Called when Items are dropped onto a target grid.

Parameters:

event - the GridDropEvent.

Returns:

index the target index, use Integer.MAX_VALUE for always dropping to end