com.vaadin.client.connectors.grid

Class AbstractSelectionModelConnector

java.lang.Object

com.vaadin.client.ui.AbstractConnector

com.vaadin.client.extensions.AbstractExtensionConnector

com.vaadin.client.connectors.grid.AbstractSelectionModelConnector

All Implemented Interfaces:

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

Direct Known Subclasses:

MultiSelectionModelConnector, SingleSelectionModelConnector

public abstract class AbstractSelectionModelConnector
extends AbstractExtensionConnector

Abstract base class for grid's selection models.

Since:

8.0

Author:

Vaadin Ltd

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
AbstractSelectionModelConnector()

Method Summary

Modifier and Type	Method and Description
protected void	extend(ServerConnector target) Called when the extension is attached to its parent.
protected Grid<JsonObject>	getGrid() Shorthand for fetching the grid this selection model is bound to.
GridConnector	getParent() Returns the parent of this connector.
protected SpaceSelectHandler<JsonObject>	getSpaceSelectionHandler() Gets space selection handler registered for the Grid.
AbstractSelectionModelState	getState() Returns the shared state object for this connector.
protected abstract void	initSelectionModel() Initializes the selection model and sets it to the grid.
protected boolean	isSelected(JsonObject item) Returns whether the given item selected in grid or not.
void	onUnregister() Event called when connector has been unregistered.

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, 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

AbstractSelectionModelConnector

public AbstractSelectionModelConnector()

Method Detail

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

initSelectionModel

protected abstract void initSelectionModel()

Initializes the selection model and sets it to the grid.

This method is only invoked once by extend(ServerConnector) in AbstractSelectionModelConnector when the grid is available via getGrid() and the selection model should be taken into use.

getParent

public GridConnector getParent()

Description copied from interface: ServerConnector

Returns the parent of this connector. Can be null for only the root connector.

Specified by:

getParent in interface ServerConnector

Specified by:

getParent in interface Connector

Overrides:

getParent in class AbstractConnector

Returns:

The parent of this connector, as set by ServerConnector.setParent(ServerConnector).

getGrid

protected Grid<JsonObject> getGrid()

Shorthand for fetching the grid this selection model is bound to.

Returns:

the grid

getSpaceSelectionHandler

protected SpaceSelectHandler<JsonObject> getSpaceSelectionHandler()

Gets space selection handler registered for the Grid.

Returns:

space selection handler

getState

public AbstractSelectionModelState 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)

isSelected

protected boolean isSelected(JsonObject item)

Returns whether the given item selected in grid or not.

Parameters:

item - the item to check

Returns:

true if selected false if not