Package org.apache.wicket.markup.html.form.upload

Class FilesSelectedBehavior

java.lang.Object

org.apache.wicket.behavior.Behavior

org.apache.wicket.behavior.AbstractAjaxBehavior

org.apache.wicket.ajax.AbstractDefaultAjaxBehavior

org.apache.wicket.ajax.AjaxEventBehavior

org.apache.wicket.ajax.form.AjaxFormComponentUpdatingBehavior

org.apache.wicket.ajax.form.OnChangeAjaxBehavior

org.apache.wicket.markup.html.form.upload.FilesSelectedBehavior

All Implemented Interfaces:

Serializable, IComponentAwareEventSink, IRequestListener, IComponentAwareHeaderContributor, IClusterable

public abstract class FilesSelectedBehavior
extends OnChangeAjaxBehavior

OnChangeAjaxBehavior that streams back to server properties of the selected file(s) (at client side), before uploading it (them).

Author:

Ernesto Reinaldo Barreiro ([email protected]).

See Also:

• Serialized Form

Field Summary

Fields inherited from class org.apache.wicket.ajax.form.OnChangeAjaxBehavior

EVENT_CHANGE, EVENT_NAME

Fields inherited from class org.apache.wicket.ajax.AbstractDefaultAjaxBehavior

INDICATOR

Constructor Summary

Constructors

Constructor	Description
FilesSelectedBehavior()

Method Summary

Modifier and Type	Method	Description
protected void	onBind()	Subclasses should call super.onBind()
protected abstract void	onSelected(AjaxRequestTarget target, List<FileDescription> fileDescriptions)	Called when a file, at client side is selected.
static FilesSelectedBehavior	onSelected(org.danekja.java.util.function.serializable.SerializableBiConsumer<AjaxRequestTarget,List<FileDescription>> select)	Creates an FilesSelectedBehavior based on lambda expressions
protected void	onUpdate(AjaxRequestTarget target)	Listener invoked on the ajax request.
void	renderHead(Component component, IHeaderResponse response)	Render to the web response whatever the component wants to contribute to the head section.
protected void	updateAjaxAttributes(AjaxRequestAttributes attributes)	Gives a chance to the specializations to modify the attributes.

Methods inherited from class org.apache.wicket.ajax.form.OnChangeAjaxBehavior

onChange

Methods inherited from class org.apache.wicket.ajax.form.AjaxFormComponentUpdatingBehavior

checkComponent, disableFocusOnBlur, getFormComponent, getUpdateModel, onError, onEvent, onUpdate

Methods inherited from class org.apache.wicket.ajax.AjaxEventBehavior

getEvent, onEvent, respond

Methods inherited from class org.apache.wicket.ajax.AbstractDefaultAjaxBehavior

findIndicatorId, getAttributes, getCallbackFunction, getCallbackFunctionBody, getCallbackScript, getCallbackScript, onMethodMismatch, onRequest, postprocessConfiguration, renderAjaxAttributes, renderAjaxAttributes

Methods inherited from class org.apache.wicket.behavior.AbstractAjaxBehavior

afterRender, bind, getCallbackUrl, getComponent, onComponentRendered, onComponentTag, onComponentTag, onUnbind, unbind

Methods inherited from class org.apache.wicket.behavior.Behavior

beforeRender, canCallListener, detach, getStatelessHint, isEnabled, isTemporary, onAttribute, onConfigure, onEvent, onException, onRemove, onTag

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.wicket.IRequestListener

rendersPage

Constructor Details

FilesSelectedBehavior

public FilesSelectedBehavior()

Method Details

onBind

protected void onBind()

Description copied from class: AbstractDefaultAjaxBehavior

Subclasses should call super.onBind()

Overrides:

onBind in class AjaxFormComponentUpdatingBehavior

See Also:

• AbstractAjaxBehavior.onBind()

onUpdate

protected void onUpdate(AjaxRequestTarget target)

Description copied from class: AjaxFormComponentUpdatingBehavior

Listener invoked on the ajax request. This listener is invoked after the component's model has been updated.

Note: AjaxFormComponentUpdatingBehavior.onError(AjaxRequestTarget, RuntimeException) is called instead when processing of the FormComponent failed with conversion or validation errors!

Specified by:

onUpdate in class AjaxFormComponentUpdatingBehavior

Parameters:

target - the current request handler

onSelected

protected abstract void onSelected(AjaxRequestTarget target,
 List<FileDescription> fileDescriptions)

Called when a file, at client side is selected.

Parameters:

target - The AjaxRequestTarget

fileDescriptions - A list of FileDescription

updateAjaxAttributes

protected void updateAjaxAttributes(AjaxRequestAttributes attributes)

Description copied from class: AbstractDefaultAjaxBehavior

Gives a chance to the specializations to modify the attributes.

Overrides:

updateAjaxAttributes in class OnChangeAjaxBehavior

renderHead

public void renderHead(Component component,
 IHeaderResponse response)

Description copied from class: Behavior

Render to the web response whatever the component wants to contribute to the head section.

Specified by:

renderHead in interface IComponentAwareHeaderContributor

Overrides:

renderHead in class AjaxEventBehavior

Parameters:

component - component which is contributing to the response. This parameter is here to give the component as the context for component-awares implementing this interface

response - Response object

See Also:

• Behavior.renderHead(Component, org.apache.wicket.markup.head.IHeaderResponse)

onSelected

public static FilesSelectedBehavior onSelected(org.danekja.java.util.function.serializable.SerializableBiConsumer<AjaxRequestTarget,List<FileDescription>> select)

Creates an FilesSelectedBehavior based on lambda expressions

Parameters:

select - SerializableBiConsumer

Returns:

the FilesSelectedBehavior behavior