Skip navigation links
oracle.ide.controls
Class NonNullableComboBoxModel
java.lang.Object
javax.swing.AbstractListModel
javax.swing.DefaultComboBoxModel
oracle.ide.controls.NonNullableComboBoxModel
- All Implemented Interfaces:
- java.io.Serializable, javax.swing.ComboBoxModel, javax.swing.ListModel, javax.swing.MutableComboBoxModel
-
public class NonNullableComboBoxModel
- extends javax.swing.DefaultComboBoxModel
The NonNullableComboBoxModel
is a simple class for ensuring that a JComboBox
will always have an item selected (if that we start with a non-empty list.) This will prevent the user from Control-clicking in the list to unselect the selected item in the JComboBox.
This can be used to guarantee that there is always a selected item in the combo box model. If the user attempts to unselect an item, the previously selected item will remain selected. The selection will be empty only if the combo box model is empty.
- See Also:
- Serialized Form
Fields inherited from class javax.swing.AbstractListModel |
listenerList |
Method Summary |
void |
setSelectedItem(java.lang.Object anObject)
Sets the selected item of the combo box model to the specified object. |
Methods inherited from class javax.swing.DefaultComboBoxModel |
addElement, getElementAt, getIndexOf, getSelectedItem, getSize, insertElementAt, removeAllElements, removeElement, removeElementAt |
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 |
NonNullableComboBoxModel
public NonNullableComboBoxModel()
- Constructs an empty combo box model.
NonNullableComboBoxModel
public NonNullableComboBoxModel(java.lang.Object[] items)
- Constructs a new
NonNullableComboBoxModel
with the specified list of objects.
- Parameters:
items
- an array of Objects to use for the model
setSelectedItem
public void setSelectedItem(java.lang.Object anObject)
- Sets the selected item of the combo box model to the specified object. This overrides the default behavior to prevent the selected item from being set to null. This means the user can't hit "Ctrl-click" to unselect an item in the JComboBox.
-
- Specified by:
setSelectedItem
in interface javax.swing.ComboBoxModel
- Overrides:
setSelectedItem
in class javax.swing.DefaultComboBoxModel
-
- Parameters:
anObject
- the object to set as the selected item
Skip navigation links
Copyright © 1997, 2013, Oracle. All rights reserved.