com.google.gwt.view.client
Class SingleSelectionModel<T>

java.lang.Object
  com.google.gwt.view.client.SelectionModel.AbstractSelectionModel<T>
      com.google.gwt.view.client.SingleSelectionModel<T>

Type Parameters:

T - the record data type

All Implemented Interfaces:

HasHandlers, ProvidesKey<T>, SelectionModel<T>

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

A simple selection model that allows only one object to be selected a a time.

SingleSelectionModel

public SingleSelectionModel()

Constructs a SingleSelectionModel without a key provider.

SingleSelectionModel

public SingleSelectionModel(ProvidesKey<T> keyProvider)

Constructs a SingleSelectionModel with the given key provider.

Parameters:

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

getSelectedObject

public T getSelectedObject()

Gets the currently-selected object.

Returns:

the selected object

isSelected

public boolean isSelected(T object)

Description copied from interface: SelectionModel

Check if an object is selected.

Parameters:

object - the object

Returns:

true if selected, false if not

setSelected

public void setSelected(T object,
                        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:

object - the object to select or deselect

selected - true to select, false to deselect

fireSelectionChangeEvent

protected void fireSelectionChangeEvent()

Description copied from class: SelectionModel.AbstractSelectionModel

Fire a SelectionChangeEvent. Multiple firings may be coalesced.

Overrides:

fireSelectionChangeEvent in class SelectionModel.AbstractSelectionModel<T>