| /* MetalComboBoxButton.java |
| Copyright (C) 2005 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package javax.swing.plaf.metal; |
| |
| import java.awt.Color; |
| import java.awt.Component; |
| import java.awt.Graphics; |
| import java.awt.Insets; |
| |
| import javax.swing.CellRendererPane; |
| import javax.swing.Icon; |
| import javax.swing.JButton; |
| import javax.swing.JComboBox; |
| import javax.swing.JList; |
| import javax.swing.ListCellRenderer; |
| import javax.swing.UIManager; |
| |
| /** |
| * A button used by the {@link MetalComboBoxUI} class. |
| */ |
| public class MetalComboBoxButton |
| extends JButton |
| { |
| |
| /** A reference to the JComboBox that the button belongs to. */ |
| protected JComboBox comboBox; |
| |
| /** A reference to the JList. */ |
| protected JList listBox; |
| |
| /** |
| * Used for rendering the selected item. |
| */ |
| protected CellRendererPane rendererPane; |
| |
| /** The button icon. */ |
| protected Icon comboIcon; |
| |
| /** Display just the icon, or the icon plus the label. */ |
| protected boolean iconOnly; |
| |
| /** |
| * Creates a new button. |
| * |
| * @param cb the combo that the button is used for (<code>null</code> not |
| * permitted). |
| * @param i the icon displayed on the button. |
| * @param pane the rendering pane. |
| * @param list the list. |
| */ |
| public MetalComboBoxButton(JComboBox cb, Icon i, CellRendererPane pane, |
| JList list) |
| { |
| this(cb, i, cb.isEditable(), pane, list); |
| } |
| |
| /** |
| * Creates a new button. |
| * |
| * @param cb the combo that the button is used for (<code>null</code> not |
| * permitted). |
| * @param i the icon displayed on the button. |
| * @param onlyIcon a flag that specifies whether the button displays only an |
| * icon, or text as well. |
| * @param pane the rendering pane. |
| * @param list the list. |
| */ |
| public MetalComboBoxButton(JComboBox cb, Icon i, boolean onlyIcon, |
| CellRendererPane pane, JList list) |
| { |
| super(); |
| if (cb == null) |
| throw new NullPointerException("Null 'cb' argument"); |
| comboBox = cb; |
| comboIcon = i; |
| iconOnly = onlyIcon; |
| listBox = list; |
| rendererPane = pane; |
| setRolloverEnabled(false); |
| setEnabled(comboBox.isEnabled()); |
| setFocusable(comboBox.isEnabled()); |
| } |
| |
| /** |
| * Returns the combo box that the button is used with. |
| * |
| * @return The combo box. |
| */ |
| public final JComboBox getComboBox() |
| { |
| return comboBox; |
| } |
| |
| /** |
| * Sets the combo box that the button is used with. |
| * |
| * @param cb the combo box. |
| */ |
| public final void setComboBox(JComboBox cb) |
| { |
| comboBox = cb; |
| } |
| |
| /** |
| * Returns the icon displayed by the button. By default, this will be an |
| * instance of {@link MetalComboBoxIcon}. |
| * |
| * @return The icon displayed by the button. |
| */ |
| public final Icon getComboIcon() |
| { |
| return comboIcon; |
| } |
| |
| /** |
| * Sets the icon displayed by the button. |
| * |
| * @param i the icon. |
| */ |
| public final void setComboIcon(Icon i) |
| { |
| comboIcon = i; |
| } |
| |
| /** |
| * Returns a flag that controls whether the button displays an icon only, |
| * or text as well. |
| * |
| * @return A boolean. |
| */ |
| public final boolean isIconOnly() |
| { |
| return iconOnly; |
| } |
| |
| /** |
| * Sets the flag that controls whether the button displays an icon only, |
| * or text as well. |
| * |
| * @param isIconOnly the flag. |
| */ |
| public final void setIconOnly(boolean isIconOnly) |
| { |
| iconOnly = isIconOnly; |
| } |
| |
| /** |
| * Returns <code>false</code>, to indicate that this component is not part |
| * of the focus traversal group. |
| * |
| * @return <code>false</code> |
| */ |
| public boolean isFocusTraversable() |
| { |
| return false; |
| } |
| |
| /** |
| * Enables or disables the button. |
| * |
| * @param enabled the new status. |
| */ |
| public void setEnabled(boolean enabled) |
| { |
| super.setEnabled(enabled); |
| if (enabled) |
| { |
| setBackground(comboBox.getBackground()); |
| setForeground(comboBox.getForeground()); |
| } |
| else |
| { |
| setBackground(UIManager.getColor("ComboBox.disabledBackground")); |
| setForeground(UIManager.getColor("ComboBox.disabledForeground")); |
| } |
| } |
| |
| /** |
| * Paints the component. |
| * |
| * @param g the graphics device. |
| */ |
| public void paintComponent(Graphics g) |
| { |
| super.paintComponent(g); |
| Insets insets = this.getInsets(); |
| int w = getWidth() - (insets.left + insets.right); |
| int h = getHeight() - (insets.top + insets.bottom); |
| if (h > 0 && w > 0) |
| { |
| int x1 = insets.left; |
| int y1 = insets.top; |
| int x2 = x1 + (w - 1); |
| int y2 = y1 + (h - 1); |
| int iconWidth = 0; |
| int iconX = x2; |
| if (comboIcon != null) |
| { |
| iconWidth = comboIcon.getIconWidth(); |
| int iconHeight = comboIcon.getIconHeight(); |
| int iconY; |
| if (iconOnly) |
| { |
| iconX = getWidth() / 2 - iconWidth / 2; |
| iconY = getHeight() / 2 - iconHeight / 2; |
| } |
| else |
| { |
| iconX = x1 + (w - 1) - iconWidth; |
| iconY = y1 + (y2 - y1) / 2 - iconHeight / 2; |
| } |
| comboIcon.paintIcon(this, g, iconX, iconY); |
| if (this.hasFocus()) |
| { |
| g.setColor(MetalLookAndFeel.getFocusColor()); |
| g.drawRect(x1 - 1, y1 - 1, w + 3, h + 1); |
| } |
| } |
| if (! iconOnly && comboBox != null) |
| { |
| ListCellRenderer renderer = comboBox.getRenderer(); |
| boolean pressed = this.getModel().isPressed(); |
| Component comp = renderer.getListCellRendererComponent(listBox, |
| comboBox.getSelectedItem(), -1, false, false); |
| comp.setFont(rendererPane.getFont()); |
| |
| if ((model.isArmed() && model.isPressed()) |
| || (comboBox.isFocusOwner() && !comboBox.isPopupVisible())) |
| { |
| if (isOpaque()) |
| { |
| comp.setBackground(UIManager.getColor("Button.select")); |
| comp.setForeground(comboBox.getForeground()); |
| } |
| } |
| else if (! comboBox.isEnabled()) |
| { |
| if (this.isOpaque()) |
| { |
| Color dbg = |
| UIManager.getColor("ComboBox.disabledBackground"); |
| comp.setBackground(dbg); |
| Color dfg = |
| UIManager.getColor("ComboBox.disabledForeground"); |
| comp.setForeground(dfg); |
| } |
| } |
| else |
| { |
| comp.setForeground(comboBox.getForeground()); |
| comp.setBackground(comboBox.getBackground()); |
| } |
| int wr = w - (insets.right + iconWidth); |
| rendererPane.paintComponent(g, comp, this, x1, y1, wr, h); |
| } |
| } |
| } |
| } |