Class BasicLabelUI

protected static BasicLabelUI labelUI

The labelUI that is shared by all labels.

public BasicLabelUI()

Creates a new BasicLabelUI object.

public static ComponentUI createUI(JComponent c)

Creates and returns a UI for the label. Since one UI is shared by all labels, this means creating only if necessary and returning the shared UI.

Overrides:

createUI in interface ComponentUI

Parameters:

c - The JComponent that a UI is being created for.

Returns:

A label UI for the Basic Look and Feel.

public Dimension getMaximumSize(JComponent c)

This method returns the maximum size of the JComponent given. If this method returns null, then it is up to the Layout Manager to give this component a maximum size.

Overrides:

getMaximumSize in interface ComponentUI

Parameters:

c - The JComponent to get a maximum size for.

Returns:

The maximum size.

public Dimension getMinimumSize(JComponent c)

This method returns the minimum size of the JComponent given. If this method returns null, then it is up to the Layout Manager to give this component a minimum size.

Overrides:

getMinimumSize in interface ComponentUI

Parameters:

c - The JComponent to get a minimum size for.

Returns:

The minimum size.

public Dimension getPreferredSize(JComponent c)

Returns the preferred size of this component as calculated by the layoutCL(JLabel,FontMetrics,String,Icon,Rectangle,Rectangle,Rectangle) method.

Overrides:

getPreferredSize in interface ComponentUI

Parameters:

c - This JComponent to get a preferred size for.

Returns:

The preferred size.

protected void installComponents(JLabel c)

This method installs the components for this JLabel.

Parameters:

c - The JLabel to install components for.

protected void installDefaults(JLabel c)

This method installs the defaults that are defined in the Basic look and feel for this JLabel.

Parameters:

c - The JLabel to install defaults for.

protected void installKeyboardActions(JLabel l)

Installs the keyboard actions for the given JLabel.

Parameters:

l - The JLabel to install keyboard actions for.

protected void installListeners(JLabel c)

This method installs the listeners for the given JLabel. The UI delegate only listens to the label.

Parameters:

c - The JLabel to install listeners for.

public void installUI(JComponent c)

This method installs the UI for the given JComponent. This method will install the component, defaults, listeners, and keyboard actions.

Overrides:

installUI in interface ComponentUI

Parameters:

c - The JComponent that this UI is being installed on.

protected String layoutCL(JLabel label,
                          FontMetrics fontMetrics,
                          String text,
                          Icon icon,
                          Rectangle viewR,
                          Rectangle iconR,
                          Rectangle textR)

This method is simply calls SwingUtilities's layoutCompoundLabel.

Parameters:

label - The label to lay out.

fontMetrics - The FontMetrics for the font used.

text - The text to paint.

icon - The icon to draw.

viewR - The entire viewable rectangle.

iconR - The icon bounds rectangle.

textR - The text bounds rectangle.

Returns:

A possibly clipped version of the text.

public void paint(Graphics g,
                  JComponent c)

The method that paints the label according to its current state.

Overrides:

paint in interface ComponentUI

Parameters:

g - The Graphics object to paint with.

c - The JComponent to paint.

protected void paintDisabledText(JLabel l,
                                 Graphics g,
                                 String s,
                                 int textX,
                                 int textY)

Paints the text if the label is disabled. By default, this paints the clipped text returned by layoutCompoundLabel using the background.brighter() color. It also paints the same text using the background.darker() color one pixel to the right and one pixel down.

Parameters:

l - The JLabel being painted.

g - The Graphics object to paint with.

s - The String to paint.

textX - The x coordinate of the start of the baseline.

textY - The y coordinate of the start of the baseline.

protected void paintEnabledText(JLabel l,
                                Graphics g,
                                String s,
                                int textX,
                                int textY)

Paints the text if the label is enabled. The text is painted using the foreground color.

Parameters:

l - The JLabel being painted.

g - The Graphics object to paint with.

s - The String to paint.

textX - The x coordinate of the start of the baseline.

textY - The y coordinate of the start of the baseline.

public void propertyChange(PropertyChangeEvent e)

This method is called whenever any JLabel's that use this UI has one of their properties change.

Specified by:

propertyChange in interface PropertyChangeListener

Parameters:

e - The PropertyChangeEvent that describes the change.

protected void uninstallComponents(JLabel c)

This method uninstalls the components for this JLabel.

Parameters:

c - The JLabel to uninstall components for.

protected void uninstallDefaults(JLabel c)

This method uninstalls the defaults that are defined in the Basic look and feel for this JLabel.

Parameters:

c - The JLabel to uninstall defaults for.

protected void uninstallKeyboardActions(JLabel l)

This method uninstalls the keyboard actions for the given JLabel.

Parameters:

l - The JLabel to uninstall keyboard actions for.

protected void uninstallListeners(JLabel c)

This method uninstalls the listeners for the given JLabel. The UI delegate only listens to the label.

Parameters:

c - The JLabel to uninstall listeners for.

public void uninstallUI(JComponent c)

This method uninstalls the UI for the given JComponent. This method will uninstall the component, defaults, listeners, and keyboard actions.

Overrides:

uninstallUI in interface ComponentUI

Parameters:

c - The JComponent that this UI is being installed on.