com.vaadin.client.ui.customcomponent

Class CustomComponentConnector

java.lang.Object

com.vaadin.client.ui.AbstractConnector

com.vaadin.client.ui.AbstractComponentConnector

com.vaadin.client.ui.AbstractHasComponentsConnector

com.vaadin.client.ui.customcomponent.CustomComponentConnector

All Implemented Interfaces:

com.google.gwt.event.shared.EventHandler, StateChangeEvent.StateChangeHandler, ComponentConnector, ConnectorHierarchyChangeEvent.ConnectorHierarchyChangeHandler, HasComponentsConnector, ServerConnector, Connector, Serializable

Direct Known Subclasses:

DragAndDropWrapperConnector

public class CustomComponentConnector
extends AbstractHasComponentsConnector

See Also:

Serialized Form

Field Summary

Fields inherited from class com.vaadin.client.ui.AbstractComponentConnector

SIGNIFICANT_MOVE_THRESHOLD

Constructor Summary

Constructors

Constructor and Description
CustomComponentConnector()

Method Summary

Modifier and Type	Method and Description
VCustomComponent	getWidget() Returns the widget associated with this paintable.
void	onConnectorHierarchyChange(ConnectorHierarchyChangeEvent event) Called by the framework when the list of child components of the connector implementing this interface has changed.
void	updateCaption(ComponentConnector component) Update child components caption, description and error message.

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

addConnectorHierarchyChangeHandler, getChildComponents, setChildComponents

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

createWidget, delegateCaptionHandling, flush, getIcon, getIconUri, getLayoutManager, getState, getTooltipInfo, hasTooltip, isReadOnly, isRealUpdate, isRelativeHeight, isRelativeWidth, isUndefinedHeight, isUndefinedWidth, onStateChanged, onUnregister, registerTouchHandlers, sendContextClickEvent, setWidgetEnabled, setWidgetStyleName, setWidgetStyleNameWithPrefix, shouldHandleLongTap, unregisterTouchHandlers, updateComponentSize, updateComponentSize, updateEnabledState, updateWidgetSize, updateWidgetStyleNames

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

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.vaadin.client.ServerConnector

addStateChangeHandler, addStateChangeHandler, doInit, fireEvent, getChildren, getConnection, getParent, getRpcImplementations, getState, hasEventListener, isEnabled, onUnregister, removeStateChangeHandler, removeStateChangeHandler, setChildren, setParent, updateEnabledState

Methods inherited from interface com.vaadin.shared.Connector

getConnectorId

Constructor Detail

CustomComponentConnector

public CustomComponentConnector()

Method Detail

getWidget

public VCustomComponent getWidget()

Description copied from class: AbstractComponentConnector

Returns the widget associated with this paintable. The widget returned by this method must not changed during the life time of the paintable.

Specified by:

getWidget in interface ComponentConnector

Overrides:

getWidget in class AbstractComponentConnector

Returns:

The widget associated with this paintable

updateCaption

public void updateCaption(ComponentConnector component)

Description copied from interface: HasComponentsConnector

Update child components caption, description and error message.

Each component is responsible for maintaining its caption, description and error message. In most cases components doesn't want to do that and those elements reside outside of the component. Because of this layouts must provide service for it's childen to show those elements for them.

Parameters:

component - Child component for which service is requested.

onConnectorHierarchyChange

public void onConnectorHierarchyChange(ConnectorHierarchyChangeEvent event)

Description copied from interface: ConnectorHierarchyChangeEvent.ConnectorHierarchyChangeHandler

Called by the framework when the list of child components of the connector implementing this interface has changed. The implementation is responsible for attaching the widgets of any new children and detaching the widgets of any removed children. Implementations should typically also make sure that the child widgets are attached according to the ordering of the child components.

This method is called after the shared state and hierarchy data (i.e. AbstractHasComponentsConnector.setChildComponents(List)) been updated for all affected connectors, but before updating captions, firing state change events, invoking updateFromUIDL for legacy connectors, invoking RPC and starting the layout phase.

Please note that hierarchy change events are fired in a non-deterministic order when a message from the server causes multiple parts of the hierarchy to change. This means that the old parent connector might not yet have detached a child widget and that the widget of a removed child might already have been attached by its new parent.

Parameters:

event - the event with information about the hierarchy change