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javax.swing
Class DefaultComboBoxModel  

java.lang.Object
  javax.swing.AbstractListModel
      javax.swing.DefaultComboBoxModel

All Implemented Interfaces:

ComboBoxModel, ListModel, MutableComboBoxModel, java.io.Serializable

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public class DefaultComboBoxModel

extends AbstractListModel

implements MutableComboBoxModel, java.io.Serializable

A model that stores a list of elements and a selected item (which may be null). Changes to the model are signalled to listeners using javax.swing.event.ListDataEvent. This model is designed for use by the JComboBox component.

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Field Summary
private  java.util.Vector	list           Storage for the elements in the model's list.
private  java.lang.Object	selectedItem           The selected item (null indicates no selection).
private static long	serialVersionUID

 

Fields inherited from class javax.swing.AbstractListModel

listenerList

 

Constructor Summary

DefaultComboBoxModel()           Creates a new model, initially empty.

DefaultComboBoxModel(java.lang.Object[] items)           Creates a new model and initializes its item list to the values in the given array.

DefaultComboBoxModel(java.util.Vector vector)           Creates a new model and initializes its item list to the values in the given vector.

 

Method Summary
void	addElement(java.lang.Object object)           Adds an element to the model's item list and sends a javax.swing.event.ListDataEvent to all registered listeners.
java.lang.Object	getElementAt(int index)           Returns the element at the specified index in the model's item list.
int	getIndexOf(java.lang.Object object)           Returns the index of the specified element in the model's item list.
java.lang.Object	getSelectedItem()           Returns the selected item.
int	getSize()           Returns the number of items in the model's item list.
void	insertElementAt(java.lang.Object object, int index)           Adds an element at the specified index in the model's item list and sends a javax.swing.event.ListDataEvent to all registered listeners.
void	removeAllElements()           Removes all the items from the model's item list, resets and selected item to null, and sends a javax.swing.event.ListDataEvent to all registered listeners.
void	removeElement(java.lang.Object object)           Removes an element from the model's item list and sends a javax.swing.event.ListDataEvent to all registered listeners.
void	removeElementAt(int index)           Removes the element at the specified index from the model's item list and sends a javax.swing.event.ListDataEvent to all registered listeners.
void	setSelectedItem(java.lang.Object object)           Sets the selected item for the model and sends a javax.swing.event.ListDataEvent to all registered listeners.

 

Methods inherited from class javax.swing.AbstractListModel

addListDataListener, fireContentsChanged, fireIntervalAdded, fireIntervalRemoved, getListDataListeners, getListeners, removeListDataListener

 

Methods inherited from class java.lang.Object

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

 

Methods inherited from interface javax.swing.ListModel

addListDataListener, removeListDataListener

 

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

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list

private java.util.Vector list

Storage for the elements in the model's list.

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selectedItem

private java.lang.Object selectedItem

The selected item (null indicates no selection).

Constructor Detail

DefaultComboBoxModel

public DefaultComboBoxModel()

Creates a new model, initially empty.

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DefaultComboBoxModel

public DefaultComboBoxModel(java.lang.Object[] items)

Creates a new model and initializes its item list to the values in the given array. The selected item is set to the first item in the array, or null if the array length is zero.

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DefaultComboBoxModel

public DefaultComboBoxModel(java.util.Vector vector)

Creates a new model and initializes its item list to the values in the given vector. The selected item is set to the first item in the vector, or null if the vector length is zero.

Method Detail

addElement

public void addElement(java.lang.Object object)

Adds an element to the model's item list and sends a javax.swing.event.ListDataEvent to all registered listeners. If the new element is the first item added to the list, and the selected item is null, the new element is set as the selected item.

Specified by:

addElement in interface MutableComboBoxModel

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removeElementAt

public void removeElementAt(int index)

Removes the element at the specified index from the model's item list and sends a javax.swing.event.ListDataEvent to all registered listeners. If the element removed was the selected item, then the preceding element becomes the new selected item (or the next element, if there is no preceding element).

Specified by:

removeElementAt in interface MutableComboBoxModel

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insertElementAt

public void insertElementAt(java.lang.Object object,
                            int index)

Adds an element at the specified index in the model's item list and sends a javax.swing.event.ListDataEvent to all registered listeners.

Specified by:

insertElementAt in interface MutableComboBoxModel

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removeElement

public void removeElement(java.lang.Object object)

Removes an element from the model's item list and sends a javax.swing.event.ListDataEvent to all registered listeners. If the item to be removed is the current selected item, a new selected item will be set. If the element is not found in the model's item list, this method does nothing.

Specified by:

removeElement in interface MutableComboBoxModel

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removeAllElements

public void removeAllElements()

Removes all the items from the model's item list, resets and selected item to null, and sends a javax.swing.event.ListDataEvent to all registered listeners.

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getSize

public int getSize()

Returns the number of items in the model's item list.

Specified by:

getSize in interface ListModel

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setSelectedItem

public void setSelectedItem(java.lang.Object object)

Sets the selected item for the model and sends a javax.swing.event.ListDataEvent to all registered listeners. The start and end index of the event is set to -1 to indicate the model's selection has changed, and not its contents.

Specified by:

setSelectedItem in interface ComboBoxModel

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getSelectedItem

public java.lang.Object getSelectedItem()

Returns the selected item.

Specified by:

getSelectedItem in interface ComboBoxModel

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getElementAt

public java.lang.Object getElementAt(int index)

Returns the element at the specified index in the model's item list.

Specified by:

getElementAt in interface ListModel

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getIndexOf

public int getIndexOf(java.lang.Object object)

Returns the index of the specified element in the model's item list.

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Home >> All >> javax >> [ swing overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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