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MetalComboBoxButton.javaAPI DocJava SE 6 API6889Tue Jun 10 00:26:50 BST 2008javax.swing.plaf.metal

MetalComboBoxButton

public class MetalComboBoxButton extends JButton
JButton subclass to help out MetalComboBoxUI

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 JavaBeansTM has been added to the java.beans package. Please see {@link java.beans.XMLEncoder}.

see
MetalComboBoxButton
version
1.40 11/17/05
author
Tom Santos

Fields Summary
protected JComboBox
comboBox
protected JList
listBox
protected CellRendererPane
rendererPane
protected Icon
comboIcon
protected boolean
iconOnly
Constructors Summary
MetalComboBoxButton()

        super( "" );
        DefaultButtonModel model = new DefaultButtonModel() {
            public void setArmed( boolean armed ) {
                super.setArmed( isPressed() ? true : armed );
            }
        };
        setModel( model );
    
public MetalComboBoxButton(JComboBox cb, Icon i, CellRendererPane pane, JList list)

        this();
        comboBox = cb;
        comboIcon = i;
        rendererPane = pane;
        listBox = list;
        setEnabled( comboBox.isEnabled() );
    
public MetalComboBoxButton(JComboBox cb, Icon i, boolean onlyIcon, CellRendererPane pane, JList list)

        this( cb, i, pane, list );
        iconOnly = onlyIcon;
    
Methods Summary
public final javax.swing.JComboBoxgetComboBox()


         return comboBox;
public final javax.swing.IcongetComboIcon()

 return comboIcon;
public java.awt.DimensiongetMinimumSize()

        Dimension ret = new Dimension();
        Insets insets = getInsets();
        ret.width = insets.left + getComboIcon().getIconWidth() + insets.right;
        ret.height = insets.bottom + getComboIcon().getIconHeight() + insets.top;
        return ret;        
    
public booleanisFocusTraversable()

	return false;
    
public final booleanisIconOnly()

 return iconOnly;
public voidpaintComponent(java.awt.Graphics g)

        boolean leftToRight = MetalUtils.isLeftToRight(comboBox);

        // Paint the button as usual
        super.paintComponent( g );

        Insets insets = getInsets();

        int width = getWidth() - (insets.left + insets.right);
        int height = getHeight() - (insets.top + insets.bottom);

        if ( height <= 0 || width <= 0 ) {
            return;
        }

        int left = insets.left;
        int top = insets.top;
        int right = left + (width - 1);
        int bottom = top + (height - 1);

        int iconWidth = 0;
        int iconLeft = (leftToRight) ? right : left;

        // Paint the icon
        if ( comboIcon != null ) {
            iconWidth = comboIcon.getIconWidth();
            int iconHeight = comboIcon.getIconHeight();
            int iconTop = 0;

            if ( iconOnly ) {
                iconLeft = (getWidth() / 2) - (iconWidth / 2);
                iconTop = (getHeight() / 2) - (iconHeight / 2);
            }
            else {
	        if (leftToRight) {
		    iconLeft = (left + (width - 1)) - iconWidth;
		}
		else {
		    iconLeft = left;
		}
                iconTop = (top + ((bottom - top) / 2)) - (iconHeight / 2);
            }

            comboIcon.paintIcon( this, g, iconLeft, iconTop );

            // Paint the focus
            if ( comboBox.hasFocus() && (!MetalLookAndFeel.usingOcean() ||
                                         comboBox.isEditable())) {
                g.setColor( MetalLookAndFeel.getFocusColor() );
                g.drawRect( left - 1, top - 1, width + 3, height + 1 );
            }
        }

        if (MetalLookAndFeel.usingOcean()) {
            // With Ocean the button only paints the arrow, bail.
            return;
        }

        // Let the renderer paint
        if ( ! iconOnly && comboBox != null ) {
            ListCellRenderer renderer = comboBox.getRenderer();
            Component c;
            boolean renderPressed = getModel().isPressed();
            c = renderer.getListCellRendererComponent(listBox,
                                                      comboBox.getSelectedItem(),
                                                      -1,
                                                      renderPressed,
                                                      false);
            c.setFont(rendererPane.getFont());

            if ( model.isArmed() && model.isPressed() ) {
                if ( isOpaque() ) {
                    c.setBackground(UIManager.getColor("Button.select"));
                }
                c.setForeground(comboBox.getForeground());
            }
            else if ( !comboBox.isEnabled() ) {
                if ( isOpaque() ) {
                    c.setBackground(UIManager.getColor("ComboBox.disabledBackground"));
                }
                c.setForeground(UIManager.getColor("ComboBox.disabledForeground"));
            }
            else {
                c.setForeground(comboBox.getForeground());
                c.setBackground(comboBox.getBackground());
            }


            int cWidth = width - (insets.right + iconWidth);
            
            // Fix for 4238829: should lay out the JPanel.
            boolean shouldValidate = false;
            if (c instanceof JPanel)  {
                shouldValidate = true;
            }
            
	    if (leftToRight) {
	        rendererPane.paintComponent( g, c, this, 
					     left, top, cWidth, height, shouldValidate );
	    }
	    else {
	        rendererPane.paintComponent( g, c, this, 
					     left + iconWidth, top, cWidth, height, shouldValidate );
	    }
        }
    
public final voidsetComboBox(javax.swing.JComboBox cb)

 comboBox = cb;
public final voidsetComboIcon(javax.swing.Icon i)

 comboIcon = i;
public voidsetEnabled(boolean enabled)

	super.setEnabled(enabled);

	// Set the background and foreground to the combobox colors.
	if (enabled) {
	    setBackground(comboBox.getBackground());
	    setForeground(comboBox.getForeground());
	} else {
	    setBackground(UIManager.getColor("ComboBox.disabledBackground"));
	    setForeground(UIManager.getColor("ComboBox.disabledForeground"));
	}	    
    
public final voidsetIconOnly(boolean isIconOnly)

 iconOnly = isIconOnly;