com.google.gwt.view.client

Class NoSelectionModel<T>

java.lang.Object

com.google.gwt.view.client.SelectionModel.AbstractSelectionModel<T>

com.google.gwt.view.client.NoSelectionModel<T>

Type Parameters:

T - the record data type

All Implemented Interfaces:

HasHandlers, ProvidesKey<T>, SelectionChangeEvent.HasSelectionChangedHandlers, SelectionModel<T>

public class NoSelectionModel<T>
extends SelectionModel.AbstractSelectionModel<T>

A selection model that does not allow selection, but fires selection change events. Use this model if you want to know when a user selects an item, but do not want the view to update based on the selection.

Nested Class Summary

Nested classes/interfaces inherited from interface com.google.gwt.view.client.SelectionModel

SelectionModel.AbstractSelectionModel<T>

Constructor Summary

Constructors

Constructor and Description
NoSelectionModel() Constructs a NoSelectionModel without a key provider.
NoSelectionModel(ProvidesKey<T> keyProvider) Constructs a NoSelectionModel with the given key provider.

Method Summary

Modifier and Type	Method and Description
T	getLastSelectedObject() Gets the item that was last selected.
boolean	isSelected(T item) Check if an object is selected.
void	setSelected(T item, boolean selected) Set the selected state of an object and fire a SelectionChangeEvent if the selection has changed.

Methods inherited from class com.google.gwt.view.client.SelectionModel.AbstractSelectionModel

addSelectionChangeHandler, fireEvent, fireSelectionChangeEvent, getKey, getKeyProvider, isEventCancelled, isEventScheduled, scheduleSelectionChangeEvent, setEventCancelled, setEventScheduled

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, toString

Constructor Detail

NoSelectionModel

public NoSelectionModel()

Constructs a NoSelectionModel without a key provider.

NoSelectionModel

public NoSelectionModel(ProvidesKey<T> keyProvider)

Constructs a NoSelectionModel with the given key provider.

Parameters:

keyProvider - an instance of ProvidesKey, or null if the item should act as its own key

Method Detail

getLastSelectedObject

public T getLastSelectedObject()

Gets the item that was last selected.

Returns:

the last selected item

isSelected

public boolean isSelected(T item)

Description copied from interface: SelectionModel

Check if an object is selected.

Parameters:

item - the object

Returns:

true if selected, false if not

setSelected

public void setSelected(T item,
                        boolean selected)

Description copied from interface: SelectionModel

Set the selected state of an object and fire a SelectionChangeEvent if the selection has changed. Subclasses should not fire an event in the case where selected is true and the object was already selected, or selected is false and the object was not previously selected.

Parameters:

item - the object to select or deselect

selected - true to select, false to deselect