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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:

Field Summary

Fields declared in class javax.swing.AbstractSpinnerModel

listenerList

Constructor Summary

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 javax.swing.AbstractSpinnerModel

addChangeListener, fireStateChanged, getChangeListeners, getListeners, removeChangeListener

Methods declared in class java.lang.Object

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

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 IllegalArugmentException 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

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:

getValue

public Object getValue()

Returns the current element of the sequence.

Specified by:

getValue in interface SpinnerModel

Returns:

the value property

See Also:

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:

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:

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:

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https://docs.oracle.com/en/java/javase/21/docs/api/java.desktop/javax/swing/SpinnerListModel.html