Class SpinnerListModel

java.lang.Object

javax.swing.AbstractSpinnerModel

javax.swing.SpinnerListModel

All Implemented Interfaces:

Serializable, SpinnerModel

public class SpinnerListModel
extends AbstractSpinnerModel
implements Serializable

A simple implementation of SpinnerModel whose values are defined by an array or a List. For example to create a model defined by an array of the names of the days of the week:

String[] days = new DateFormatSymbols().getWeekdays();
SpinnerModel model = new SpinnerListModel(Arrays.asList(days).subList(1, 8));

This class only stores a reference to the array or List so if an element of the underlying sequence changes, it's up to the application to notify the ChangeListeners by calling fireStateChanged.

This model inherits a ChangeListener. The ChangeListeners are notified whenever the model's value or list properties changes.

Since:

1.4

See Also:

• JSpinner
• SpinnerModel
• AbstractSpinnerModel
• SpinnerNumberModel
• SpinnerDateModel

Field Summary

Fields declared in class AbstractSpinnerModel

listenerList

Modifier and Type	Field	Description
protected EventListenerList	listenerList	The list of ChangeListeners for this model.

Constructor Summary

Constructors

Constructor	Description
SpinnerListModel()	Constructs an effectively empty SpinnerListModel.
SpinnerListModel(Object[] values)	Constructs a SpinnerModel whose sequence of values is defined by the specified array.
SpinnerListModel(List<?> values)	Constructs a SpinnerModel whose sequence of values is defined by the specified List.

Method Summary

Modifier and Type	Method	Description
List<?>	getList()	Returns the List that defines the sequence for this model.
Object	getNextValue()	Returns the next legal value of the underlying sequence or null if value is already the last element.
Object	getPreviousValue()	Returns the previous element of the underlying sequence or null if value is already the first element.
Object	getValue()	Returns the current element of the sequence.
void	setList(List<?> list)	Changes the list that defines this sequence and resets the index of the models value to zero.
void	setValue(Object elt)	Changes the current element of the sequence and notifies ChangeListeners.

Methods declared in class AbstractSpinnerModel

addChangeListener, fireStateChanged, getChangeListeners, getListeners, removeChangeListener

Modifier and Type	Method	Description
void	addChangeListener(ChangeListener l)	Adds a ChangeListener to the model's listener list.
protected void	fireStateChanged()	Run each ChangeListeners stateChanged() method.
ChangeListener[]	getChangeListeners()	Returns an array of all the ChangeListeners added to this AbstractSpinnerModel with addChangeListener().
<T extends EventListener> T[]	getListeners(Class<T> listenerType)	Return an array of all the listeners of the given type that were added to this model.
void	removeChangeListener(ChangeListener l)	Removes a ChangeListener from the model's listener list.

Methods declared in class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Modifier and Type	Method	Description
protected Object	clone()	Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
boolean	equals(Object o)	Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
protected void	finalize()	Deprecated, for removal: This API element is subject to removal in a future version. May cause performance issues, deadlocks and hangs.
final Class<? extends Object>	getClass()	Answers the unique instance of java.lang.Class which represents the class of the receiver.
int	hashCode()	Answers an integer hash code for the receiver.
final void	notify()	Causes one thread which is waiting on the receiver to be made ready to run.
final void	notifyAll()	Causes all threads which are waiting on the receiver to be made ready to run.
String	toString()	Answers a string containing a concise, human-readable description of the receiver.
final void	wait()	Causes the thread which sent this message to be made not ready to run pending some change in the receiver (as indicated by notify or notifyAll).
final void	wait(long time)	Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.
final void	wait(long time, int frac)	Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.

Constructor Details

SpinnerListModel

public SpinnerListModel(List<?> values)

Constructs a SpinnerModel whose sequence of values is defined by the specified List. The initial value (current element) of the model will be values.get(0). If values is null or has zero size, an IllegalArgumentException is thrown.

Parameters:

values - the sequence this model represents

Throws:

IllegalArgumentException - if values is null or zero size

SpinnerListModel

public SpinnerListModel(Object[] values)

Constructs a SpinnerModel whose sequence of values is defined by the specified array. The initial value of the model will be values[0]. If values is null or has zero length, an IllegalArgumentException is thrown.

Parameters:

values - the sequence this model represents

Throws:

IllegalArgumentException - if values is null or zero length

SpinnerListModel

public SpinnerListModel()

Constructs an effectively empty SpinnerListModel. The model's list will contain a single "empty" string element.

Method Details

getList

public List<?> getList()

Returns the List that defines the sequence for this model.

Returns:

the value of the list property

See Also:

• setList(List)

setList

public void setList(List<?> list)

Changes the list that defines this sequence and resets the index of the models value to zero. Note that list is not copied, the model just stores a reference to it.

This method fires a ChangeEvent if list is not equal to the current list.

Parameters:

list - the sequence that this model represents

Throws:

IllegalArgumentException - if list is null or zero length

See Also:

• getList()

getValue

public Object getValue()

Returns the current element of the sequence.

Specified by:

getValue in interface SpinnerModel

Returns:

the value property

See Also:

• SpinnerModel.getValue()
• setValue(Object)

setValue

public void setValue(Object elt)

Changes the current element of the sequence and notifies ChangeListeners. If the specified value is not equal to an element of the underlying sequence then an IllegalArgumentException is thrown. In the following example the setValue call would cause an exception to be thrown:

String[] values = {"one", "two", "free", "four"};
SpinnerModel model = new SpinnerListModel(values);
model.setValue("TWO");

Specified by:

setValue in interface SpinnerModel

Parameters:

elt - the sequence element that will be model's current value

Throws:

IllegalArgumentException - if the specified value isn't allowed

See Also:

• SpinnerModel.setValue(Object)
• getValue()

getNextValue

public Object getNextValue()

Returns the next legal value of the underlying sequence or null if value is already the last element.

Specified by:

getNextValue in interface SpinnerModel

Returns:

the next legal value of the underlying sequence or null if value is already the last element

See Also:

• SpinnerModel.getNextValue()
• getPreviousValue()

getPreviousValue

public Object getPreviousValue()

Returns the previous element of the underlying sequence or null if value is already the first element.

Specified by:

getPreviousValue in interface SpinnerModel

Returns:

the previous element of the underlying sequence or null if value is already the first element

See Also:

• SpinnerModel.getPreviousValue()
• getNextValue()