com.vaadin.ui

Class AbstractListing.AbstractListingExtension<T>

java.lang.Object

com.vaadin.server.AbstractClientConnector

com.vaadin.server.AbstractExtension

com.vaadin.ui.AbstractListing.AbstractListingExtension<T>

Type Parameters:

T - the listing item type

All Implemented Interfaces:

DataGenerator<T>, MethodEventSource, ClientConnector, Extension, Connector, Serializable

Direct Known Subclasses:

Grid.AbstractGridExtension

Enclosing class:

AbstractListing<T>

public abstract static class AbstractListing.AbstractListingExtension<T>
extends AbstractExtension
implements DataGenerator<T>

A helper base class for creating extensions for Listing components. This class provides helpers for accessing the underlying parts of the component and its communication mechanism.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface com.vaadin.server.ClientConnector

ClientConnector.AttachEvent, ClientConnector.AttachListener, ClientConnector.ConnectorErrorEvent, ClientConnector.DetachEvent, ClientConnector.DetachListener

Constructor Summary

Constructors

Constructor and Description
AbstractListingExtension()

Method Summary

Modifier and Type	Method and Description
void	extend(AbstractListing<T> listing) Adds this extension to the given parent listing.
protected T	getData(String key) Gets a data object based on its client-side identifier key.
AbstractListing<T>	getParent()
protected AbstractListingExtensionState	getState() Returns the shared state for this connector.
protected AbstractListingExtensionState	getState(boolean markAsDirty) Returns the shared state for this connector.
protected void	refresh(T item) A helper method for refreshing the client-side representation of a single data item.
void	remove() Remove this extension from its target.

Methods inherited from class com.vaadin.server.AbstractExtension

extend, getSupportedParentType, setParent

Methods inherited from class com.vaadin.server.AbstractClientConnector

addAttachListener, addDetachListener, addExtension, addListener, addListener, addListener, addMethodInvocationToQueue, attach, beforeClientResponse, createState, detach, encodeState, equals, fireEvent, getAllChildrenIterable, getConnectorId, getErrorHandler, getExtensions, getListeners, getResource, getRpcManager, getRpcProxy, getSession, getStateType, getUI, handleConnectorRequest, hashCode, hasListeners, isAttached, isConnectorEnabled, isThis, markAsDirty, markAsDirtyRecursive, registerRpc, registerRpc, removeAttachListener, removeDetachListener, removeExtension, removeListener, removeListener, removeListener, removeListener, requestRepaint, requestRepaintAll, retrievePendingRpcCalls, setErrorHandler, setResource, updateDiffstate

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.vaadin.data.provider.DataGenerator

destroyAllData, destroyData, generateData, refreshData

Methods inherited from interface com.vaadin.server.ClientConnector

addAttachListener, addDetachListener, attach, beforeClientResponse, detach, encodeState, getErrorHandler, getExtensions, getRpcManager, getStateType, getUI, handleConnectorRequest, isAttached, isConnectorEnabled, markAsDirty, markAsDirtyRecursive, removeAttachListener, removeDetachListener, removeExtension, requestRepaint, requestRepaintAll, retrievePendingRpcCalls, setErrorHandler

Methods inherited from interface com.vaadin.shared.Connector

getConnectorId

Constructor Detail

AbstractListingExtension

public AbstractListingExtension()

Method Detail

extend

public void extend(AbstractListing<T> listing)

Adds this extension to the given parent listing.

Parameters:

listing - the parent component to add to

remove

public void remove()

Description copied from interface: Extension

Remove this extension from its target. After an extension has been removed, it cannot be attached again.

Specified by:

remove in interface Extension

Overrides:

remove in class AbstractExtension

getData

protected T getData(String key)

Gets a data object based on its client-side identifier key.

Parameters:

key - key for data object

Returns:

the data object

getParent

public AbstractListing<T> getParent()

Specified by:

getParent in interface ClientConnector

Specified by:

getParent in interface Connector

Overrides:

getParent in class AbstractExtension

refresh

protected void refresh(T item)

A helper method for refreshing the client-side representation of a single data item.

Parameters:

item - the item to refresh

getState

protected AbstractListingExtensionState getState()

Description copied from class: AbstractClientConnector

Returns the shared state for this connector. The shared state object is shared between the server connector and the client connector. Changes are only communicated from the server to the client and not in the other direction.

As a side effect, marks the connector dirty so any changes done to the state will be sent to the client. Use getState(false) to avoid marking the connector as dirty.

Overrides:

getState in class AbstractClientConnector

Returns:

The shared state for this connector. Never null.

getState

protected AbstractListingExtensionState getState(boolean markAsDirty)

Description copied from class: AbstractClientConnector

Returns the shared state for this connector.

Overrides:

getState in class AbstractClientConnector

Parameters:

markAsDirty - true if the connector should automatically be marked dirty, false otherwise

Returns:

The shared state for this connector. Never null.

See Also:

AbstractClientConnector.getState()