javax.swing.plaf.basic
Class BasicComboPopup

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Container
              |
              +--javax.swing.JComponent
                    |
                    +--javax.swing.JPopupMenu
                          |
                          +--javax.swing.plaf.basic.BasicComboPopup

All Implemented Interfaces:

Accessible, ComboPopup, ImageObserver, MenuContainer, MenuElement, Serializable

Direct Known Subclasses:

MetalComboBoxUI.MetalComboPopup

public class BasicComboPopup

extends JPopupMenu

implements ComboPopup

This is a basic implementation of the ComboPopup interface. ui for the popup portion of the combo box.

All event handling is handled by listener classes created with the createxxxListener() methods and internal classes. You can change the behavior of this class by overriding the createxxxListener() methods and supplying your own event listeners or subclassing from the ones supplied in this class.

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans^TM has been added to the java.beans package. Please see XMLEncoder.

Nested Class Summary
class	BasicComboPopup.InvocationKeyHandler     As of Java 2 platform v 1.4, this class is now obsolete and is only included for backwards API compatibility.
protected  class	BasicComboPopup.InvocationMouseHandler     A listener to be registered upon the combo box (not its popup menu) to handle mouse events that affect the state of the popup menu.
protected  class	BasicComboPopup.InvocationMouseMotionHandler     This listener watches for dragging and updates the current selection in the list if it is dragging over the list.
protected  class	BasicComboPopup.ItemHandler     This listener watches for changes to the selection in the combo box.
class	BasicComboPopup.ListDataHandler     As of 1.4, this class is now obsolete, doesn't do anything, and is only included for backwards API compatibility.
protected  class	BasicComboPopup.ListMouseHandler     This listener hides the popup when the mouse is released in the list.
protected  class	BasicComboPopup.ListMouseMotionHandler     This listener changes the selected item as you move the mouse over the list.
protected  class	BasicComboPopup.ListSelectionHandler     As of Java 2 platform v 1.4, this class is now obsolete, doesn't do anything, and is only included for backwards API compatibility.
protected  class	BasicComboPopup.PropertyChangeHandler     This listener watches for bound properties that have changed in the combo box.

 

Nested classes inherited from class javax.swing.JPopupMenu

JPopupMenu.AccessibleJPopupMenu, JPopupMenu.Separator

 

Nested classes inherited from class javax.swing.JComponent

JComponent.AccessibleJComponent

 

Nested classes inherited from class java.awt.Container

Container.AccessibleAWTContainer

 

Nested classes inherited from class java.awt.Component

Component.AccessibleAWTComponent, Component.BltBufferStrategy, Component.FlipBufferStrategy

 

Field Summary
protected  Timer	autoscrollTimer     This protected field is implementation specific.
protected  JComboBox	comboBox
protected  boolean	hasEntered
protected  boolean	isAutoScrolling
protected  ItemListener	itemListener     This protected field is implementation specific.
protected  KeyListener	keyListener     This protected field is implementation specific.
protected  JList	list     This protected field is implementation specific.
protected  ListDataListener	listDataListener     This protected field is implementation specific.
protected  MouseListener	listMouseListener     This protected field is implementation specific.
protected  MouseMotionListener	listMouseMotionListener     This protected field is implementation specific.
protected  ListSelectionListener	listSelectionListener     This protected field is implementation specific.
protected  MouseListener	mouseListener     This protected field is implementation specific.
protected  MouseMotionListener	mouseMotionListener     This protected field is implementation specific.
protected  PropertyChangeListener	propertyChangeListener     This protected field is implementation specific.
protected static int	SCROLL_DOWN
protected static int	SCROLL_UP
protected  int	scrollDirection
protected  JScrollPane	scroller     This protected field is implementation specific.
protected  boolean	valueIsAdjusting     As of Java 2 platform v1.4 this previously undocumented field is no longer used.

 

Fields inherited from class javax.swing.JComponent

accessibleContext, listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW

 

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

 

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

 

Constructor Summary
BasicComboPopup(JComboBox combo)

 

Method Summary
protected  void	autoScrollDown()     This protected method is implementation specific and should be private.
protected  void	autoScrollUp()     This protected method is implementation specific and should be private.
protected  Rectangle	computePopupBounds(int px, int py, int pw, int ph)     Calculate the placement and size of the popup portion of the combo box based on the combo box location and the enclosing screen bounds.
protected  void	configureList()     Configures the list which is used to hold the combo box items in the popup.
protected  void	configurePopup()     Configures the popup portion of the combo box.
protected  void	configureScroller()     Configures the scrollable portion which holds the list within the combo box popup.
protected  MouseEvent	convertMouseEvent(MouseEvent e)
protected  ItemListener	createItemListener()     Creates an ItemListener which will be added to the combo box.
protected  KeyListener	createKeyListener()     Creates the key listener that will be added to the combo box.
protected  JList	createList()     Creates the JList used in the popup to display the items in the combo box model.
protected  ListDataListener	createListDataListener()     Creates a list data listener which will be added to the ComboBoxModel.
protected  MouseListener	createListMouseListener()     Creates a mouse listener that watches for mouse events in the popup's list.
protected  MouseMotionListener	createListMouseMotionListener()     Creates a mouse motion listener that watches for mouse motion events in the popup's list.
protected  ListSelectionListener	createListSelectionListener()     Creates a list selection listener that watches for selection changes in the popup's list.
protected  MouseListener	createMouseListener()     Creates a listener that will watch for mouse-press and release events on the combo box.
protected  MouseMotionListener	createMouseMotionListener()     Creates the mouse motion listener which will be added to the combo box.
protected  PropertyChangeListener	createPropertyChangeListener()     Creates a PropertyChangeListener which will be added to the combo box.
protected  JScrollPane	createScroller()     Creates the scroll pane which houses the scrollable list.
protected  void	delegateFocus(MouseEvent e)     This is is a utility method that helps event handlers figure out where to send the focus when the popup is brought up.
protected  void	firePopupMenuCanceled()     Notifies PopupMenuListeners that this popup menu is cancelled.
protected  void	firePopupMenuWillBecomeInvisible()     Notifies PopupMenuListeners that this popup menu will become invisible.
protected  void	firePopupMenuWillBecomeVisible()     Notifies PopupMenuListeners that this popup menu will become visible.
KeyListener	getKeyListener()     Implementation of ComboPopup.getKeyListener().
JList	getList()     Implementation of ComboPopup.getList().
MouseListener	getMouseListener()     Implementation of ComboPopup.getMouseListener().
MouseMotionListener	getMouseMotionListener()     Implementation of ComboPopup.getMouseMotionListener().
protected  int	getPopupHeightForRowCount(int maxRowCount)     Retrieves the height of the popup based on the current ListCellRenderer and the maximum row count.
void	hide()     Implementation of ComboPopup.hide().
protected  void	installComboBoxListeners()     This method adds the necessary listeners to the JComboBox.
protected  void	installComboBoxModelListeners(ComboBoxModel model)     Installs the listeners on the combo box model.
protected  void	installKeyboardActions()
protected  void	installListListeners()     Adds the listeners to the list control.
boolean	isFocusTraversable()     Overridden to unconditionally return false.
void	show()     Implementation of ComboPopup.show().
protected  void	startAutoScrolling(int direction)     This protected method is implementation specific and should be private.
protected  void	stopAutoScrolling()     This protected method is implementation specific and should be private.
protected  void	togglePopup()     Makes the popup visible if it is hidden and makes it hidden if it is visible.
protected  void	uninstallComboBoxModelListeners(ComboBoxModel model)     Removes the listeners from the combo box model
void	uninstallingUI()     Called when the UI is uninstalling.
protected  void	uninstallKeyboardActions()
protected  void	updateListBoxSelectionForEvent(MouseEvent anEvent, boolean shouldScroll)     A utility method used by the event listeners.

 

Methods inherited from class javax.swing.JPopupMenu

add, add, add, addPopupMenuListener, addSeparator, createActionChangeListener, createActionComponent, getAccessibleContext, getComponent, getComponentAtIndex, getComponentIndex, getDefaultLightWeightPopupEnabled, getInvoker, getLabel, getMargin, getPopupMenuListeners, getSelectionModel, getSubElements, getUI, getUIClassID, insert, insert, isBorderPainted, isLightWeightPopupEnabled, isPopupTrigger, isVisible, menuSelectionChanged, pack