com.vaadin.client.extensions

Class AbstractEventTriggerExtensionConnector

java.lang.Object

com.vaadin.client.ui.AbstractConnector

com.vaadin.client.extensions.AbstractExtensionConnector

com.vaadin.client.extensions.AbstractEventTriggerExtensionConnector

All Implemented Interfaces:

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

Direct Known Subclasses:

BrowserWindowOpenerConnector, FileDownloaderConnector

public abstract class AbstractEventTriggerExtensionConnector
extends AbstractExtensionConnector

An abstract extension connector with trigger support. Implementor's trigger() method call may be initiated by another Component without server round-trip. The class is used to overcome browser security limitations. For instance, window may not be open with the round-trip.

Since:

8.4

Author:

Vaadin Ltd.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
AbstractEventTriggerExtensionConnector()

Method Summary

Modifier and Type	Method and Description
protected void	extend(ServerConnector target) Called when the extension is attached to its parent.
PartInformationState	getState() Returns the shared state object for this connector.
void	onUnregister() Event called when connector has been unregistered.
protected abstract void	trigger() Called whenever a click occurs on the widget (if widget does not implement EventTrigger) or when the EventTrigger fires.

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

AbstractEventTriggerExtensionConnector

public AbstractEventTriggerExtensionConnector()

Method Detail

trigger

protected abstract void trigger()

Called whenever a click occurs on the widget (if widget does not implement EventTrigger) or when the EventTrigger fires.

getState

public PartInformationState 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 AbstractConnector

Returns:

the current shared state (never null)

extend

protected void extend(ServerConnector target)

Description copied from class: AbstractExtensionConnector

Called when the extension is attached to its parent. This method is only called once as an extension cannot be moved from one parent to another.

Specified by:

extend in class AbstractExtensionConnector

Parameters:

target - The connector this extension extends

onUnregister

public void onUnregister()

Description copied from interface: ServerConnector

Event called when connector has been unregistered.

Specified by:

onUnregister in interface ServerConnector

Overrides:

onUnregister in class AbstractConnector