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com.vaadin.server.
Interface Extension
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All Superinterfaces:
All Known Subinterfaces:
GridSelectionModel<T>,MultiSelectionModel<T>,Renderer<T>,SingleSelectionModel<T>All Known Implementing Classes:
AbstractExtension,AbstractJavaScriptExtension,AbstractJavaScriptRenderer,AbstractListing.AbstractListingExtension,AbstractRenderer,AbstractSelectionModel,BrowserWindowOpener,ButtonRenderer,ClickableRenderer,ComponentRenderer,DataCommunicator,DateRenderer,DragSourceExtension,DropTargetExtension,EditorImpl,FileDownloader,FileDropTarget,Grid.AbstractGridExtension,Grid.Column,Grid.DetailsManager,GridDragSource,GridDropTarget,HierarchicalDataCommunicator,HtmlRenderer,ImageRenderer,JavaScript,LocalDateRenderer,LocalDateTimeRenderer,MultiSelectionModelImpl,NoSelectionModel,Notification,NumberRenderer,ProgressBarRenderer,Responsive,SingleSelectionModelImpl,TextRenderer,Tree.TreeMultiSelectionModel,Tree.TreeRenderer,TreeGridDragSource,TreeGridDropTargetpublic interface Extension extends ClientConnectorAn extension is an entity that is attached to a Component or another Extension and independently communicates between client and server.
An extension can only be attached once. It is not supported to move an extension from one target to another.
Extensions can use shared state and RPC in the same way as components.
Since:
7.0.0
Author:
Vaadin Ltd
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Nested Class Summary
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Nested classes/interfaces inherited from interface com.vaadin.server.ClientConnector
ClientConnector.AttachEvent, ClientConnector.AttachListener, ClientConnector.ConnectorErrorEvent, ClientConnector.DetachEvent, ClientConnector.DetachListener
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Method Summary
All Methods Modifier and Type Method Description voidremove()Remove this extension from its target.
voidsetParent​(ClientConnector parent)Sets the parent connector of the connector.
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Methods inherited from interface com.vaadin.server.ClientConnector
addAttachListener, addDetachListener, attach, beforeClientResponse, detach, encodeState, getErrorHandler, getExtensions, getParent, getRpcManager, getStateType, getUI, handleConnectorRequest, isAttached, isConnectorEnabled, markAsDirty, markAsDirtyRecursive, removeAttachListener, removeDetachListener, removeExtension, requestRepaint, requestRepaintAll, retrievePendingRpcCalls, setErrorHandler
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Methods inherited from interface com.vaadin.shared.Connector
getConnectorId
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Method Detail
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remove
void remove()Remove this extension from its target. After an extension has been removed, it cannot be attached again.
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setParent
void setParent​(ClientConnector parent)Sets the parent connector of the connector. This method automatically calls
ClientConnector.attach()if the connector becomes attached to the session.This method is rarely called directly.
AbstractClientConnector.addExtension(Extension)is normally used for adding extensions to a parent and it will call this method implicitly.Parameters:
parent- the parent connectorThrows:
IllegalStateException- if a parent is given even though the connector already has a parent
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