SingleSelectionModel (Google Web Toolkit Javadoc)

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>, SelectionChangeEvent.HasSelectionChangedHandlers, SelectionModel<T>, SetSelectionModel<T>
```
public class SingleSelectionModel<T>
extends SelectionModel.AbstractSelectionModel<T>
implements SetSelectionModel<T>
```
A simple selection model that allows only one item to be selected a a time.

Nested Class Summary
- Nested classes/interfaces inherited from interface com.google.gwt.view.client.SelectionModel
  SelectionModel.AbstractSelectionModel<T>

Constructor Summary

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

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`clear()` Clears the current selection.
`protected void`	`fireSelectionChangeEvent()` Fire a `SelectionChangeEvent`.
`T`	`getSelectedObject()` Gets the currently-selected item.
`java.util.Set<T>`	`getSelectedSet()` Get the set of selected items.
`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, getKey, getKeyProvider, isEventCancelled, isEventScheduled, scheduleSelectionChangeEvent, setEventCancelled, setEventScheduled

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.google.gwt.view.client.SelectionModel
addSelectionChangeHandler

Methods inherited from interface com.google.gwt.event.shared.HasHandlers
fireEvent

Methods inherited from interface com.google.gwt.view.client.ProvidesKey
getKey

- Constructor Detail
  - 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 item should act as its own key
- Method Detail
  - clear
```
public void clear()
```
    Description copied from interface: SetSelectionModel
    
    Clears the current selection.
    
    Specified by:
    
    clear in interface SetSelectionModel<T>
  - getSelectedObject
```
public T getSelectedObject()
```
    Gets the currently-selected item.
    
    Returns:
    the selected item
  - getSelectedSet
```
public java.util.Set<T> getSelectedSet()
```
    Description copied from interface: SetSelectionModel
    
    Get the set of selected items.
    
    Specified by:
    
    getSelectedSet in interface SetSelectionModel<T>
    
    Returns:
    the set of selected items
  - isSelected
```
public boolean isSelected(T item)
```
    Description copied from interface: SelectionModel
    
    Check if an object is selected.
    
    Specified by:
    
    isSelected in interface SelectionModel<T>
    
    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.
    
    Specified by:
    
    setSelected in interface SelectionModel<T>
    
    Parameters:
    item - 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>

Class SingleSelectionModel<T>

Nested Class Summary

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

Constructor Summary

Method Summary

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

Methods inherited from class java.lang.Object

Methods inherited from interface com.google.gwt.view.client.SelectionModel

Methods inherited from interface com.google.gwt.event.shared.HasHandlers

Methods inherited from interface com.google.gwt.view.client.ProvidesKey

Constructor Detail

SingleSelectionModel

SingleSelectionModel

Method Detail

clear

getSelectedObject

getSelectedSet

isSelected

setSelected

fireSelectionChangeEvent