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Diffstat (limited to 'libjava/classpath/javax/swing/plaf/metal/MetalComboBoxButton.java')
| -rw-r--r-- | libjava/classpath/javax/swing/plaf/metal/MetalComboBoxButton.java | 241 |
1 files changed, 241 insertions, 0 deletions
diff --git a/libjava/classpath/javax/swing/plaf/metal/MetalComboBoxButton.java b/libjava/classpath/javax/swing/plaf/metal/MetalComboBoxButton.java new file mode 100644 index 00000000000..6993e18e9b9 --- /dev/null +++ b/libjava/classpath/javax/swing/plaf/metal/MetalComboBoxButton.java @@ -0,0 +1,241 @@ +/* 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.Component; +import java.awt.Graphics; +import java.awt.Insets; +import java.awt.Rectangle; + +import javax.swing.CellRendererPane; +import javax.swing.Icon; +import javax.swing.JButton; +import javax.swing.JComboBox; +import javax.swing.JList; +import javax.swing.SwingUtilities; + +/** + * 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; + + /** ??? */ + 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. + * @parma 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; + } + + /** + * 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); + // TODO: figure out what this might need to be used for + // perhaps it has something to do with the button's icon and/or border? + } + + /** + * Paints the component. + * + * @param g the graphics device. + */ + public void paintComponent(Graphics g) + { + super.paintComponent(g); + if (iconOnly) + { + Rectangle bounds = getBounds(); + int x = (bounds.width - comboIcon.getIconWidth()) / 2; + int y = (bounds.height - comboIcon.getIconHeight()) / 2; + comboIcon.paintIcon(comboBox, g, x, y); + } + else + { + Object selected = comboBox.getModel().getSelectedItem(); + if (selected == null) + selected = ""; + Rectangle bounds = comboBox.getBounds(); + Rectangle innerArea = SwingUtilities.calculateInnerArea(this, null); + Insets insets = comboBox.getInsets(); + Rectangle renderArea = new Rectangle(innerArea.x, innerArea.y, + innerArea.width - comboIcon.getIconWidth() - 4, innerArea.height); + Component cellRenderer + = comboBox.getRenderer().getListCellRendererComponent(this.listBox, + selected, comboBox.getSelectedIndex(), false, false); + cellRenderer.setBackground(comboBox.getBackground()); + cellRenderer.setEnabled(comboBox.isEnabled()); + rendererPane.paintComponent(g, cellRenderer, this, renderArea); + if (comboBox.hasFocus()) + { + g.setColor(MetalLookAndFeel.getFocusColor()); + g.drawRect(innerArea.x, innerArea.y - 1, innerArea.width - 1, + innerArea.height); + } + int iconX = bounds.width - insets.right - comboIcon.getIconWidth() - 7; + int iconY = insets.top + + (bounds.height - comboIcon.getIconHeight()) / 2; + comboIcon.paintIcon(comboBox, g, iconX, iconY); + } + } +} |
