Class DefaultComboBoxModel<E>

• java.lang.Object
• • javax.swing.AbstractListModel<E>
  • • javax.swing.DefaultComboBoxModel<E>

Type Parameters:

E - the type of the elements of this model

All Implemented Interfaces:

Serializable, ComboBoxModel<E>, ListModel<E>, MutableComboBoxModel<E>

public class DefaultComboBoxModel<E>
extends AbstractListModel<E>
implements MutableComboBoxModel<E>, Serializable

The default model for combo boxes.

Fields

Fields inherited from class javax.swing.AbstractListModel

listenerList

Constructors

DefaultComboBoxModel

public DefaultComboBoxModel()

Constructs an empty DefaultComboBoxModel object.

DefaultComboBoxModel

public DefaultComboBoxModel(E[] items)

Constructs a DefaultComboBoxModel object initialized with an array of objects.

Parameters:

items - an array of Object objects

DefaultComboBoxModel

public DefaultComboBoxModel(Vector<E> v)

Constructs a DefaultComboBoxModel object initialized with a vector.

Parameters:

v - a Vector object ...

Methods

setSelectedItem

public void setSelectedItem(Object anObject)

Set the value of the selected item. The selected item may be null.

Specified by:

setSelectedItem in interface ComboBoxModel<E>

Parameters:

anObject - The combo box value or null for no selection.

getSelectedItem

public Object getSelectedItem()

Description copied from interface: ComboBoxModel

Returns the selected item

Specified by:

getSelectedItem in interface ComboBoxModel<E>

Returns:

The selected item or null if there is no selection

getSize

public int getSize()

Description copied from interface: ListModel

Returns the length of the list.

Specified by:

getSize in interface ListModel<E>

Returns:

the length of the list

getElementAt

public E getElementAt(int index)

Description copied from interface: ListModel

Returns the value at the specified index.

Specified by:

getElementAt in interface ListModel<E>

Parameters:

index - the requested index

Returns:

the value at index

getIndexOf

public int getIndexOf(Object anObject)

Returns the index-position of the specified object in the list.

Parameters:

anObject -

Returns:

an int representing the index position, where 0 is the first position

addElement

public void addElement(E anObject)

Description copied from interface: MutableComboBoxModel

Adds an item at the end of the model. The implementation of this method should notify all registered ListDataListeners that the item has been added.

Specified by:

addElement in interface MutableComboBoxModel<E>

Parameters:

anObject - the item to be added

insertElementAt

public void insertElementAt(E anObject,
                            int index)

Description copied from interface: MutableComboBoxModel

Adds an item at a specific index. The implementation of this method should notify all registered ListDataListeners that the item has been added.

Specified by:

insertElementAt in interface MutableComboBoxModel<E>

Parameters:

anObject - the item to be added

index - location to add the object

removeElementAt

public void removeElementAt(int index)

Description copied from interface: MutableComboBoxModel

Removes an item at a specific index. The implementation of this method should notify all registered ListDataListeners that the item has been removed.

Specified by:

removeElementAt in interface MutableComboBoxModel<E>

Parameters:

index - location of the item to be removed

removeElement

public void removeElement(Object anObject)

Description copied from interface: MutableComboBoxModel

Removes an item from the model. The implementation of this method should should notify all registered ListDataListeners that the item has been removed.

Specified by:

removeElement in interface MutableComboBoxModel<E>

Parameters:

anObject - the Object to be removed

removeAllElements

public void removeAllElements()

Empties the list.