com.vaadin.client.extensions

Class FileDropTargetConnector

java.lang.Object

com.vaadin.client.ui.AbstractConnector

com.vaadin.client.extensions.AbstractExtensionConnector

com.vaadin.client.extensions.DropTargetExtensionConnector

com.vaadin.client.extensions.FileDropTargetConnector

All Implemented Interfaces:

com.google.gwt.event.shared.EventHandler, StateChangeEvent.StateChangeHandler, ServerConnector, Connector, Serializable

public class FileDropTargetConnector
extends DropTargetExtensionConnector

Extension to add file drop target functionality to a widget. It allows dropping files onto the widget and uploading the dropped files to the server.

Since:

8.1

Author:

Vaadin Ltd

See Also:

Serialized Form

Field Summary

Fields inherited from class com.vaadin.client.extensions.DropTargetExtensionConnector

STYLE_SUFFIX_DRAG_BOTTOM, STYLE_SUFFIX_DRAG_CENTER, STYLE_SUFFIX_DRAG_TOP, STYLE_SUFFIX_DROPTARGET

Constructor Summary

Constructors

Constructor and Description
FileDropTargetConnector() Constructs file drop target connector.

Method Summary

Modifier and Type	Method and Description
FileDropTargetState	getState() Returns the shared state object for this connector.
protected void	onDrop(elemental.events.Event event) Event handler for the drop event.

Methods inherited from class com.vaadin.client.extensions.DropTargetExtensionConnector

addDragOverStyle, addDropTargetStyle, extend, getDropTargetElement, isDropAllowedByCriteriaScript, onDragEnter, onDragLeave, onDragOver, onUnregister, removeDragOverStyle, removeDropTargetStyle, sendDropEventToServer

Methods inherited from class com.vaadin.client.extensions.AbstractExtensionConnector

setParent

Methods inherited from class com.vaadin.client.ui.AbstractConnector

addStateChangeHandler, addStateChangeHandler, createState, doInit, ensureHandlerManager, fireEvent, forceStateChange, getChildren, getConnection, getConnectorId, getParent, getResourceUrl, getRpcImplementations, getRpcProxy, getStateType, getTag, hasEventListener, init, isEnabled, onStateChanged, registerRpc, removeStateChangeHandler, removeStateChangeHandler, setChildren, setTag, unregisterRpc, updateEnabledState

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FileDropTargetConnector

public FileDropTargetConnector()

Constructs file drop target connector.

Method Detail

onDrop

protected void onDrop(elemental.events.Event event)

Description copied from class: DropTargetExtensionConnector

Event handler for the drop event.

Override this method in case custom handling for the drop event is required. If the drop is allowed, the event should prevent default.

Overrides:

onDrop in class DropTargetExtensionConnector

Parameters:

event - browser event to be handled

getState

public FileDropTargetState getState()

Description copied from class: AbstractConnector

Returns the shared state object for this connector. Override this method to define the shared state type for your connector.

Specified by:

getState in interface ServerConnector

Overrides:

getState in class DropTargetExtensionConnector

Returns:

the current shared state (never null)