--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/javax/swing/DefaultListCellRenderer.java Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,325 @@
+/*
+ * Copyright 1998-2007 Sun Microsystems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package javax.swing;
+
+import javax.swing.*;
+import javax.swing.event.*;
+import javax.swing.border.*;
+
+import java.awt.Component;
+import java.awt.Color;
+import java.awt.Rectangle;
+
+import java.io.Serializable;
+
+
+/**
+ * Renders an item in a list.
+ * <p>
+ * <strong><a name="override">Implementation Note:</a></strong>
+ * This class overrides
+ * <code>invalidate</code>,
+ * <code>validate</code>,
+ * <code>revalidate</code>,
+ * <code>repaint</code>,
+ * <code>isOpaque</code>,
+ * and
+ * <code>firePropertyChange</code>
+ * solely to improve performance.
+ * If not overridden, these frequently called methods would execute code paths
+ * that are unnecessary for the default list cell renderer.
+ * If you write your own renderer,
+ * take care to weigh the benefits and
+ * drawbacks of overriding these methods.
+ *
+ * <p>
+ *
+ * <strong>Warning:</strong>
+ * 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 JavaBeans<sup><font size="-2">TM</font></sup>
+ * has been added to the <code>java.beans</code> package.
+ * Please see {@link java.beans.XMLEncoder}.
+ *
+ * @author Philip Milne
+ * @author Hans Muller
+ */
+public class DefaultListCellRenderer extends JLabel
+ implements ListCellRenderer, Serializable
+{
+
+ /**
+ * An empty <code>Border</code>. This field might not be used. To change the
+ * <code>Border</code> used by this renderer override the
+ * <code>getListCellRendererComponent</code> method and set the border
+ * of the returned component directly.
+ */
+ protected static Border noFocusBorder = new EmptyBorder(1, 1, 1, 1);
+ private static final Border SAFE_NO_FOCUS_BORDER = new EmptyBorder(1, 1, 1, 1);
+
+ /**
+ * Constructs a default renderer object for an item
+ * in a list.
+ */
+ public DefaultListCellRenderer() {
+ super();
+ setOpaque(true);
+ setBorder(getNoFocusBorder());
+ }
+
+
+ private static Border getNoFocusBorder() {
+ if (System.getSecurityManager() != null) {
+ return SAFE_NO_FOCUS_BORDER;
+ } else {
+ return UIManager.getBorder("List.noFocusBorder");
+ }
+ }
+
+ public Component getListCellRendererComponent(
+ JList list,
+ Object value,
+ int index,
+ boolean isSelected,
+ boolean cellHasFocus)
+ {
+ setComponentOrientation(list.getComponentOrientation());
+
+ Color bg = null;
+ Color fg = null;
+
+ JList.DropLocation dropLocation = list.getDropLocation();
+ if (dropLocation != null
+ && !dropLocation.isInsert()
+ && dropLocation.getIndex() == index) {
+
+ bg = UIManager.getColor("List.dropCellBackground");
+ fg = UIManager.getColor("List.dropCellForeground");
+
+ isSelected = true;
+ }
+
+ if (isSelected) {
+ setBackground(bg == null ? list.getSelectionBackground() : bg);
+ setForeground(fg == null ? list.getSelectionForeground() : fg);
+ }
+ else {
+ setBackground(list.getBackground());
+ setForeground(list.getForeground());
+ }
+
+ if (value instanceof Icon) {
+ setIcon((Icon)value);
+ setText("");
+ }
+ else {
+ setIcon(null);
+ setText((value == null) ? "" : value.toString());
+ }
+
+ setEnabled(list.isEnabled());
+ setFont(list.getFont());
+
+ Border border = null;
+ if (cellHasFocus) {
+ if (isSelected) {
+ border = UIManager.getBorder("List.focusSelectedCellHighlightBorder");
+ }
+ if (border == null) {
+ border = UIManager.getBorder("List.focusCellHighlightBorder");
+ }
+ } else {
+ border = getNoFocusBorder();
+ }
+ setBorder(border);
+
+ return this;
+ }
+
+
+ /**
+ * Overridden for performance reasons.
+ * See the <a href="#override">Implementation Note</a>
+ * for more information.
+ *
+ * @since 1.5
+ * @return <code>true</code> if the background is completely opaque
+ * and differs from the JList's background;
+ * <code>false</code> otherwise
+ */
+ public boolean isOpaque() {
+ Color back = getBackground();
+ Component p = getParent();
+ if (p != null) {
+ p = p.getParent();
+ }
+ // p should now be the JList.
+ boolean colorMatch = (back != null) && (p != null) &&
+ back.equals(p.getBackground()) &&
+ p.isOpaque();
+ return !colorMatch && super.isOpaque();
+ }
+
+ /**
+ * Overridden for performance reasons.
+ * See the <a href="#override">Implementation Note</a>
+ * for more information.
+ */
+ public void validate() {}
+
+ /**
+ * Overridden for performance reasons.
+ * See the <a href="#override">Implementation Note</a>
+ * for more information.
+ *
+ * @since 1.5
+ */
+ public void invalidate() {}
+
+ /**
+ * Overridden for performance reasons.
+ * See the <a href="#override">Implementation Note</a>
+ * for more information.
+ *
+ * @since 1.5
+ */
+ public void repaint() {}
+
+ /**
+ * Overridden for performance reasons.
+ * See the <a href="#override">Implementation Note</a>
+ * for more information.
+ */
+ public void revalidate() {}
+ /**
+ * Overridden for performance reasons.
+ * See the <a href="#override">Implementation Note</a>
+ * for more information.
+ */
+ public void repaint(long tm, int x, int y, int width, int height) {}
+
+ /**
+ * Overridden for performance reasons.
+ * See the <a href="#override">Implementation Note</a>
+ * for more information.
+ */
+ public void repaint(Rectangle r) {}
+
+ /**
+ * Overridden for performance reasons.
+ * See the <a href="#override">Implementation Note</a>
+ * for more information.
+ */
+ protected void firePropertyChange(String propertyName, Object oldValue, Object newValue) {
+ // Strings get interned...
+ if (propertyName == "text"
+ || ((propertyName == "font" || propertyName == "foreground")
+ && oldValue != newValue
+ && getClientProperty(javax.swing.plaf.basic.BasicHTML.propertyKey) != null)) {
+
+ super.firePropertyChange(propertyName, oldValue, newValue);
+ }
+ }
+
+ /**
+ * Overridden for performance reasons.
+ * See the <a href="#override">Implementation Note</a>
+ * for more information.
+ */
+ public void firePropertyChange(String propertyName, byte oldValue, byte newValue) {}
+
+ /**
+ * Overridden for performance reasons.
+ * See the <a href="#override">Implementation Note</a>
+ * for more information.
+ */
+ public void firePropertyChange(String propertyName, char oldValue, char newValue) {}
+
+ /**
+ * Overridden for performance reasons.
+ * See the <a href="#override">Implementation Note</a>
+ * for more information.
+ */
+ public void firePropertyChange(String propertyName, short oldValue, short newValue) {}
+
+ /**
+ * Overridden for performance reasons.
+ * See the <a href="#override">Implementation Note</a>
+ * for more information.
+ */
+ public void firePropertyChange(String propertyName, int oldValue, int newValue) {}
+
+ /**
+ * Overridden for performance reasons.
+ * See the <a href="#override">Implementation Note</a>
+ * for more information.
+ */
+ public void firePropertyChange(String propertyName, long oldValue, long newValue) {}
+
+ /**
+ * Overridden for performance reasons.
+ * See the <a href="#override">Implementation Note</a>
+ * for more information.
+ */
+ public void firePropertyChange(String propertyName, float oldValue, float newValue) {}
+
+ /**
+ * Overridden for performance reasons.
+ * See the <a href="#override">Implementation Note</a>
+ * for more information.
+ */
+ public void firePropertyChange(String propertyName, double oldValue, double newValue) {}
+
+ /**
+ * Overridden for performance reasons.
+ * See the <a href="#override">Implementation Note</a>
+ * for more information.
+ */
+ public void firePropertyChange(String propertyName, boolean oldValue, boolean newValue) {}
+
+ /**
+ * A subclass of DefaultListCellRenderer that implements UIResource.
+ * DefaultListCellRenderer doesn't implement UIResource
+ * directly so that applications can safely override the
+ * cellRenderer property with DefaultListCellRenderer subclasses.
+ * <p>
+ * <strong>Warning:</strong>
+ * 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 JavaBeans<sup><font size="-2">TM</font></sup>
+ * has been added to the <code>java.beans</code> package.
+ * Please see {@link java.beans.XMLEncoder}.
+ */
+ public static class UIResource extends DefaultListCellRenderer
+ implements javax.swing.plaf.UIResource
+ {
+ }
+
+}