BasicComboBoxUI JDK 1.6)

Methods

public void addEditor ()

This public method is implementation specific and should be private.

This public method is implementation specific and should be private.
do not call or override. To implement a specific editor create a
custom ComboBoxEditor
See Also: BasicComboBoxUI.createEditor(), JComboBox.setEditor(javax.swing.ComboBoxEditor), ComboBoxEditor,

public void configureArrowButton ()

This public method is implementation specific and should be private.

protected void configureEditor ()

This protected method is implementation specific and should be private.

public boolean contains (JComponent c, int x, int y) [Inherited From ComponentUI]

Returns true if the specified x,y location is contained within the look and feel's defined shape of the specified component.

Returns true if the specified x,y location is
contained within the look and feel's defined shape of the specified
component. x and y are defined to be relative
to the coordinate system of the specified component. Although
a component's bounds is constrained to a rectangle,
this method provides the means for defining a non-rectangular
shape within those bounds for the purpose of hit detection.
Parameters:
- c - the component where the x,y location is being queried; this argument is often ignored, but might be used if the UI object is stateless and shared by multiple components
- x - the x coordinate of the point
- y - the y coordinate of the point
See Also: JComponent.contains(int, int), Component.contains(int, int),

protected JButton createArrowButton ()

Creates an button which will be used as the control to show or hide the popup portion of the combo box.

protected ComboBoxEditor createEditor ()

Creates the default editor that will be used in editable combo boxes.

Creates the default editor that will be used in editable combo boxes.
A default editor will be used only if an editor has not been
explicitly set with setEditor.
Returns: a ComboBoxEditor used for the combo box
See Also: JComboBox.setEditor(javax.swing.ComboBoxEditor),

protected FocusListener createFocusListener ()

Creates a FocusListener which will be added to the combo box.

Creates a FocusListener which will be added to the combo box.
If this method returns null then it will not be added to the combo box.
Returns: an instance of a FocusListener or null

protected ItemListener createItemListener ()

Creates an ItemListener which will be added to the combo box.

Creates an ItemListener which will be added to the combo box. If this method returns null then it will not be added to the combo box.

Subclasses may override this method to return instances of their own ItemEvent handlers.
Returns: an instance of an ItemListener or null

protected KeyListener createKeyListener ()

Creates a KeyListener which will be added to the combo box.

Creates a KeyListener which will be added to the
combo box. If this method returns null then it will not be added
to the combo box.
Returns: an instance KeyListener or null

protected LayoutManager createLayoutManager ()

Creates a layout manager for managing the components which make up the combo box.

protected ListDataListener createListDataListener ()

Creates a list data listener which will be added to the ComboBoxModel.

Creates a list data listener which will be added to the
ComboBoxModel. If this method returns null then
it will not be added to the combo box model.
Returns: an instance of a ListDataListener or null

protected ComboPopup createPopup ()

Creates the popup portion of the combo box.

Creates the popup portion of the combo box.
Returns: an instance of ComboPopup
See Also: ComboPopup,

protected PropertyChangeListener createPropertyChangeListener ()

Creates a PropertyChangeListener which will be added to the combo box.

Creates a PropertyChangeListener which will be added to
the combo box. If this method returns null then it will not
be added to the combo box.
Returns: an instance of a PropertyChangeListener or null

protected ListCellRenderer createRenderer ()

Creates the default renderer that will be used in a non-editiable combo box.

Creates the default renderer that will be used in a non-editiable combo
box. A default renderer will used only if a renderer has not been
explicitly set with setRenderer.
Returns: a ListCellRender used for the combo box
See Also: JComboBox.setRenderer(javax.swing.ListCellRenderer),

publicstatic ComponentUI createUI (JComponent c) [Overrides ComponentUI]

public Accessible getAccessibleChild (JComponent c, int i) [Overrides ComponentUI]

public int getAccessibleChildrenCount (JComponent c) [Overrides ComponentUI]

public int getBaseline (JComponent c, int width, int height) [Overrides ComponentUI]

Returns the baseline.

public BaselineResizeBehavior getBaselineResizeBehavior (JComponent c) [Overrides ComponentUI]

Returns an enum indicating how the baseline of the component changes as the size changes.

protected Dimension getDefaultSize ()

Return the default size of an empty display area of the combo box using the current renderer and font.

protected Dimension getDisplaySize ()

Returns the calculated size of the display area.

pack-private InputMap getInputMap (int condition)

protected Insets getInsets ()

Gets the insets from the JComboBox.

public Dimension getMaximumSize (JComponent c) [Overrides ComponentUI]

public Dimension getMinimumSize (JComponent c) [Overrides ComponentUI]

The minumum size is the size of the display area plus insets plus the button.

public Dimension getPreferredSize (JComponent c) [Overrides ComponentUI]

protected void installComponents ()

Creates and initializes the components which make up the aggregate combo box.

protected void installDefaults ()

Installs the default colors, default font, default renderer, and default editor into the JComboBox.

protected void installKeyboardActions ()

Adds keyboard actions to the JComboBox.

protected void installListeners ()

Create and install the listeners for the combo box and its model.

public void installUI (JComponent c) [Overrides ComponentUI]

public boolean isFocusTraversable (JComboBox c) [Specified in ComboBoxUI]

Determines if the JComboBox is focus traversable.

protected boolean isNavigationKey (int keyCode)

Returns whether or not the supplied keyCode maps to a key that is used for navigation.

public boolean isPopupVisible (JComboBox c) [Specified in ComboBoxUI]

Tells if the popup is visible or not.

pack-private boolean isTableCellEditor ()

pack-privatestatic void loadActionMap (LazyActionMap map)

Populates ComboBox's actions.

public void paint (Graphics g, JComponent c) [Overrides ComponentUI]

public void paintCurrentValue (Graphics g, Rectangle bounds, boolean hasFocus)

Paints the currently selected item.

public void paintCurrentValueBackground (Graphics g, Rectangle bounds, boolean hasFocus)

Paints the background of the currently selected item.

protected Rectangle rectangleForCurrentValue ()

Returns the area that is reserved for drawing the currently selected item.

public void removeEditor ()

This public method is implementation specific and should be private.

pack-private void repaintCurrentValue ()

Repaint the currently selected item.

protected void selectNextPossibleValue ()

Selects the next item in the list.

protected void selectPreviousPossibleValue ()

Selects the previous item in the list.

public void setPopupVisible (JComboBox c, boolean v) [Specified in ComboBoxUI]

Hides the popup.

protected void toggleOpenClose ()

Hides the popup if it is showing and shows the popup if it is hidden.

public void unconfigureArrowButton ()

This public method is implementation specific and should be private.

protected void unconfigureEditor ()

This protected method is implementation specific and should be private.

protected void uninstallComponents ()

The aggregate components which compise the combo box are unregistered and uninitialized.

protected void uninstallDefaults ()

Uninstalls the default colors, default font, default renderer, and default editor into the JComboBox.

protected void uninstallKeyboardActions ()

Removes the focus InputMap and ActionMap.

protected void uninstallListeners ()

Remove the installed listeners from the combo box and its model.

Remove the installed listeners from the combo box and its model.
The number and types of listeners removed and in this method should be
the same that was added in installListeners

public void uninstallUI (JComponent c) [Overrides ComponentUI]

public void update (Graphics g, JComponent c) [Inherited From ComponentUI]

Notifies this UI delegate that it's time to paint the specified component.

Notifies this UI delegate that it's time to paint the specified
component. This method is invoked by JComponent
when the specified component is being painted.
By default this method will fill the specified component with
its background color (if its opaque property is
true) and then immediately call paint.
In general this method need not be overridden by subclasses;
all look-and-feel rendering code should reside in the paint
method.
Parameters:
- g - the Graphics context in which to paint
- c - the component being painted; this argument is often ignored, but might be used if the UI object is stateless and shared by multiple components
See Also: ComponentUI.paint(java.awt.Graphics, javax.swing.JComponent), JComponent.paintComponent(java.awt.Graphics),