com.holonplatform.vaadin.flow.components.events

Interface ItemListingDropEvent<T,P>

Type Parameters:

T - Item type

P - Item property type

All Superinterfaces:

Event<ItemListing<T,P>>, ItemListingDnDEvent<T,P>, Serializable

public interface ItemListingDropEvent<T,P>
extends ItemListingDnDEvent<T,P>

Drop event that occurs on the ItemListing or its rows.

Method Summary

Modifier and Type	Method and Description
Map<String,String>	getDataTransferData() Get all of the transfer data from the DataTransfer object.
Optional<String>	getDataTransferData(String type) Get data from the DataTransfer object.
String	getDataTransferText() Get data of any of the types text, Text or text/plain.
com.vaadin.flow.component.grid.dnd.GridDropLocation	getDropLocation() Get the location of the drop within the row.
Optional<T>	getDropTargetItem() Get the row the drop happened on.

Methods inherited from interface com.holonplatform.vaadin.flow.components.events.ItemListingDnDEvent

isFromClient

Methods inherited from interface com.holonplatform.vaadin.flow.components.events.Event

getSource

Method Detail

getDropTargetItem

Optional<T> getDropTargetItem()

Get the row the drop happened on.

If the drop was not on top of a row (see getDropLocation()) or GridDropMode.ON_GRID is used, then returns an empty optional.

Returns:

The item of the row the drop happened on, or an empty Optional if drop was not on a row

getDropLocation

com.vaadin.flow.component.grid.dnd.GridDropLocation getDropLocation()

Get the location of the drop within the row.

NOTE: the location will be GridDropLocation.EMPTY if:

• dropped on an empty grid
• dropping on rows was not possible because of GridDropMode.ON_GRID was used
• GridDropMode.ON_TOP is used and the drop happened on empty space after last row or on top of the header / footer

Returns:

The location of the drop in relative to the getDropTargetItem() or GridDropLocation.EMPTY if no target row present

getDataTransferData

Optional<String> getDataTransferData(String type)

Get data from the DataTransfer object.

Parameters:

type - Data format, e.g. text/plain or text/uri-list.

Returns:

Optional data for the given format if exists in the DataTransfer, otherwise an empty Optional

getDataTransferText

String getDataTransferText()

Get data of any of the types text, Text or text/plain.

Returns:

First existing data of types in order text, Text or text/plain, or null if none of them exist.

getDataTransferData

Map<String,String> getDataTransferData()

Get all of the transfer data from the DataTransfer object. The data can be iterated to find the most relevant data as it preserves the order in which the data was set to the drag source element.

Returns:

Map of type/data pairs, containing all the data from the DataTransfer object.