ListModel (Java 2 Platform SE v1.4.1) - JDK 5 Documentation v1.4.1, Java 2 SDK 英文文档

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Java^TM 2 Platform
Std. Ed. v1.4.1

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javax.swing
Interface ListModel

All Known Subinterfaces:: ComboBoxModel, MutableComboBoxModel

All Known Implementing Classes:: AbstractListModel, DefaultComboBoxModel, MetalFileChooserUI.DirectoryComboBoxModel, MetalFileChooserUI.FilterComboBoxModel

public interface ListModel

This interface defines the methods components like JList use to get the value of each cell in a list and the length of the list. Logically the model is a vector, indices vary from 0 to ListDataModel.getSize() - 1. Any change to the contents or length of the data model must be reported to all of the ListDataListeners.

See Also:: JList

Method Summary

void addListDataListener(ListDataListener l)
          Adds a listener to the list that's notified each time a change to the data model occurs.

Object getElementAt(int index)
          Returns the value at the specified index.

int getSize()
          Returns the length of the list.

void removeListDataListener(ListDataListener l)
          Removes a listener from the list that's notified each time a change to the data model occurs.

Method Detail

getSize

public int getSize()

Returns the length of the list.

Returns:: the length of the list

getElementAt

public Object getElementAt(int index)

Returns the value at the specified index.

Parameters:: index - the requested index
Returns:: the value at index

addListDataListener

public void addListDataListener(ListDataListener l)

Adds a listener to the list that's notified each time a change to the data model occurs.

Parameters:: l - the ListDataListener to be added

removeListDataListener

public void removeListDataListener(ListDataListener l)

Removes a listener from the list that's notified each time a change to the data model occurs.

Parameters:: l - the ListDataListener to be removed