javax.swing
Class DefaultComboBoxModel
- ComboBoxModel, ListModel, MutableComboBoxModel, 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
ListDataEvent. This model is designed for use by the
JComboBox component.
clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait |
DefaultComboBoxModel
public DefaultComboBoxModel(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.
vector - a vector containing items for the model (null
not permitted).
DefaultComboBoxModel
public DefaultComboBoxModel(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.
items - an array containing items for the model (null
not permitted).
addElement
public void addElement(Object object)
Adds an element to the model's item list and sends a
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.
- addElement in interface MutableComboBoxModel
object - item to add to the model's item list.
getElementAt
public Object getElementAt(int index)
Returns the element at the specified index in the model's item list.
- getElementAt in interface ListModel
index - the element index.
- The element at the specified index in the model's item list, or
null if the index is outside the bounds
of the list.
getIndexOf
public int getIndexOf(Object object)
Returns the index of the specified element in the model's item list.
- The index of the specified element in the model's item list.
getSize
public int getSize()
Returns the number of items in the model's item list.
- getSize in interface ListModel
- The number of items in the model's item list.
insertElementAt
public void insertElementAt(Object object,
int index) Adds an element at the specified index in the model's item list
and sends a
ListDataEvent to all registered listeners.
- insertElementAt in interface MutableComboBoxModel
object - element to insertindex - index specifing position in the list where given element
should be inserted.
removeAllElements
public void removeAllElements()
Removes all the items from the model's item list, resets and selected item
to
null, and sends a
ListDataEvent to all registered
listeners.
removeElement
public void removeElement(Object object)
Removes an element from the model's item list and sends a
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.
- removeElement in interface MutableComboBoxModel
object - the element to remove.
removeElementAt
public void removeElementAt(int index)
Removes the element at the specified index from the model's item list
and sends a
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).
- removeElementAt in interface MutableComboBoxModel
index - the index of the item to remove.
setSelectedItem
public void setSelectedItem(Object object)
Sets the selected item for the model and sends a
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.
- setSelectedItem in interface ComboBoxModel
object - the new selected item (null permitted).
DefaultComboBoxModel.java --
Copyright (C) 2002, 2004, 2005, 2006, Free Software Foundation, Inc.
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