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Java 2 Platform SE v1.3.1: Class DefaultComboBoxModel - JDK 5 Documentation v1.3.1, Java 2 SDK 英文文档

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javax.swing
Class DefaultComboBoxModel

java.lang.Object
  |
  +--javax.swing.AbstractListModel
        |
        +--javax.swing.DefaultComboBoxModel

All Implemented Interfaces:

ComboBoxModel, ListModel, MutableComboBoxModel, Serializable

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public class DefaultComboBoxModel

extends AbstractListModel

implements MutableComboBoxModel, Serializable

The default model for combo boxes.

See Also:

Serialized Form

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Fields inherited from class javax.swing.AbstractListModel

listenerList

 

Constructor Summary

DefaultComboBoxModel()           Constructs an empty DefaultComboBoxModel object.

DefaultComboBoxModel(Object[] items)           Constructs a DefaultComboBoxModel object initialized with an array of objects.

DefaultComboBoxModel(Vector v)           Constructs a DefaultComboBoxModel object initialized with a vector.

 

Method Summary
void	addElement(Object anObject)           Adds an item to the end of the model.
Object	getElementAt(int index)           Returns the value at the specified index.
int	getIndexOf(Object anObject)           Returns the index-position of the specified object in the list.
Object	getSelectedItem()           Return the selected item
int	getSize()           Returns the length of the list.
void	insertElementAt(Object anObject, int index)           Adds an item at a specific index
void	removeAllElements()           Empties the list.
void	removeElement(Object anObject)           Removes an item from the model.
void	removeElementAt(int index)           Removes an item at a specific index
void	setSelectedItem(Object anObject)           Set the selected item

 

Methods inherited from class javax.swing.AbstractListModel

addListDataListener, fireContentsChanged, fireIntervalAdded, fireIntervalRemoved, 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

 

Constructor Detail

DefaultComboBoxModel

public DefaultComboBoxModel()

Constructs an empty DefaultComboBoxModel object.

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DefaultComboBoxModel

public DefaultComboBoxModel(Object[] items)

Constructs a DefaultComboBoxModel object initialized with an array of objects.

Parameters:

items - an array of Object objects

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DefaultComboBoxModel

public DefaultComboBoxModel(Vector v)

Constructs a DefaultComboBoxModel object initialized with a vector.

Parameters:

v - a Vector object ...

Method Detail

setSelectedItem

public void setSelectedItem(Object anObject)

Description copied from interface: ComboBoxModel

Set the selected item

Specified by:

setSelectedItem in interface ComboBoxModel

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getSelectedItem

public Object getSelectedItem()

Description copied from interface: ComboBoxModel

Return the selected item

Specified by:

getSelectedItem in interface ComboBoxModel

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getSize

public int getSize()

Description copied from interface: ListModel

Returns the length of the list.

Specified by:

getSize in interface ListModel

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getElementAt

public Object getElementAt(int index)

Description copied from interface: ListModel

Returns the value at the specified index.

Specified by:

getElementAt in interface ListModel

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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

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addElement

public void addElement(Object anObject)

Description copied from interface: MutableComboBoxModel

Adds an item to the end of the model.

Specified by:

addElement in interface MutableComboBoxModel

Following copied from interface: javax.swing.MutableComboBoxModel

Parameters:

obj - the Object to be added

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insertElementAt

public void insertElementAt(Object anObject,
                            int index)

Description copied from interface: MutableComboBoxModel

Adds an item at a specific index

Specified by:

insertElementAt in interface MutableComboBoxModel

Following copied from interface: javax.swing.MutableComboBoxModel

Parameters:

obj - the Object to be added

index - location to add the object

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removeElementAt

public void removeElementAt(int index)

Description copied from interface: MutableComboBoxModel

Removes an item at a specific index

Specified by:

removeElementAt in interface MutableComboBoxModel

Following copied from interface: javax.swing.MutableComboBoxModel

Parameters:

index - location of object to be removed

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removeElement

public void removeElement(Object anObject)

Description copied from interface: MutableComboBoxModel

Removes an item from the model.

Specified by:

removeElement in interface MutableComboBoxModel

Following copied from interface: javax.swing.MutableComboBoxModel

Parameters:

obj - the Object to be removed

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removeAllElements

public void removeAllElements()

Empties the list.

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