com.vaadin.event.dd
Interface DropTarget

All Superinterfaces:

ClientConnector, Component, Connector, RpcTarget, Serializable, Sizeable

All Known Implementing Classes:

DragAndDropWrapper, Table, Tree, TreeTable

public interface DropTarget
extends Component

DropTarget is an interface for components supporting drop operations. A component that wants to receive drop events should implement this interface and provide a DropHandler which will handle the actual drop event.

Since:

6.3

Nested Class Summary

Nested classes/interfaces inherited from interface com.vaadin.ui.Component

Component.ErrorEvent, Component.ErrorListener, Component.Event, Component.Focusable, Component.Listener

Nested classes/interfaces inherited from interface com.vaadin.terminal.Sizeable

Sizeable.Unit

Field Summary

Fields inherited from interface com.vaadin.terminal.Sizeable

SIZE_UNDEFINED, UNITS_CM, UNITS_EM, UNITS_EX, UNITS_INCH, UNITS_MM, UNITS_PERCENTAGE, UNITS_PICAS, UNITS_PIXELS, UNITS_POINTS

Method Summary

DropHandler	getDropHandler()
TargetDetails	translateDropTargetDetails(Map<String,Object> clientVariables) Called before the DragAndDropEvent is passed to DropHandler.

Methods inherited from interface com.vaadin.ui.Component

addListener, addStyleName, attach, getApplication, getCaption, getDebugId, getIcon, getLocale, getParent, getRoot, getState, getStyleName, isEnabled, isReadOnly, isVisible, removeListener, removeStyleName, setCaption, setDebugId, setEnabled, setIcon, setReadOnly, setStyleName, setVisible, updateState

Methods inherited from interface com.vaadin.terminal.gwt.server.ClientConnector

detach, getExtensions, getStateType, isConnectorEnabled, removeExtension, requestRepaint, requestRepaintAll, retrievePendingRpcCalls, setParent

Methods inherited from interface com.vaadin.terminal.gwt.client.Connector

getConnectorId

Methods inherited from interface com.vaadin.terminal.gwt.server.RpcTarget

getRpcManager

Methods inherited from interface com.vaadin.terminal.Sizeable

getHeight, getHeightUnits, getWidth, getWidthUnits, setHeight, setHeight, setSizeFull, setSizeUndefined, setWidth, setWidth

Method Detail

getDropHandler

DropHandler getDropHandler()

Returns:

the drop hanler that will receive the dragged data or null if drops are not currently accepted

translateDropTargetDetails

TargetDetails translateDropTargetDetails(Map<String,Object> clientVariables)

Called before the DragAndDropEvent is passed to DropHandler. Implementation may for example translate the drop target details provided by the client side (drop target) to meaningful server side values. If null is returned the terminal implementation will automatically create a TargetDetails with raw client side data.

Parameters:

clientVariables - data passed from the DropTargets client side counterpart.

Returns:

A DropTargetDetails object with the translated data or null to use a default implementation.

See Also:

DragSource.getTransferable(Map)