FileDropTargetConnector (vaadin-all 8.28.0 API)

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 Description

FileDropTargetConnector()
Constructs file drop target connector.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	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)