public interface

SpinnerModel

javax.swing.SpinnerModel
Known Indirect Subclasses

Class Overview

A model for a potentially unbounded sequence of object values. This model is similar to ListModel however there are some important differences:

  • The number of sequence elements isn't neccessarily bounded.
  • The model doesn't support indexed random access to sequence elements. Only three sequence values are accessible at a time: current, next and previous.
  • The current sequence element, can be set.

A SpinnerModel has three properties, only the first is read/write.

value
The current element of the sequence.
nextValue
The following element or null if value is the last element of the sequence.
previousValue
The preceeding element or null if value is the first element of the sequence.
When the the value property changes, ChangeListeners are notified. SpinnerModel may choose to notify the ChangeListeners under other circumstances.

See Also

Summary

Public Methods
abstract void addChangeListener(ChangeListener l)
Adds a ChangeListener to the model's listener list.
abstract Object getNextValue()
Return the object in the sequence that comes after the object returned by getValue().
abstract Object getPreviousValue()
Return the object in the sequence that comes before the object returned by getValue().
abstract Object getValue()
The current element of the sequence.
abstract void removeChangeListener(ChangeListener l)
Removes a ChangeListener from the model's listener list.
abstract void setValue(Object value)
Changes current value of the model, typically this value is displayed by the editor part of a JSpinner.

Public Methods

public abstract void addChangeListener (ChangeListener l)

Adds a ChangeListener to the model's listener list. The ChangeListeners must be notified when models value changes.

Parameters
l the ChangeListener to add
See Also

public abstract Object getNextValue ()

Return the object in the sequence that comes after the object returned by getValue(). If the end of the sequence has been reached then return null. Calling this method does not effect value.

Returns
  • the next legal value or null if one doesn't exist
See Also

public abstract Object getPreviousValue ()

Return the object in the sequence that comes before the object returned by getValue(). If the end of the sequence has been reached then return null. Calling this method does not effect value.

Returns
  • the previous legal value or null if one doesn't exist
See Also

public abstract Object getValue ()

The current element of the sequence. This element is usually displayed by the editor part of a JSpinner.

Returns
  • the current spinner value.
See Also

public abstract void removeChangeListener (ChangeListener l)

Removes a ChangeListener from the model's listener list.

Parameters
l the ChangeListener to remove
See Also

public abstract void setValue (Object value)

Changes current value of the model, typically this value is displayed by the editor part of a JSpinner. If the SpinnerModel implementation doesn't support the specified value then an IllegalArgumentException is thrown. For example a SpinnerModel for numbers might only support values that are integer multiples of ten. In that case, model.setValue(new Number(11)) would throw an exception.

Throws
IllegalArgumentException if value isn't allowed
See Also