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+/* CellRendererPane.java --
+ Copyright (C) 2002, 2004, 2006, 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;
+
+import java.awt.Component;
+import java.awt.Container;
+import java.awt.Graphics;
+import java.awt.Rectangle;
+
+import javax.accessibility.Accessible;
+import javax.accessibility.AccessibleContext;
+import javax.accessibility.AccessibleRole;
+
+/**
+ * Paints the cells of JList, JTable and JTree.
+ * It intercepts the usual paint tree, so that we don't walk up and
+ * repaint everything.
+ *
+ * @author Andrew Selkirk
+ */
+public class CellRendererPane extends Container implements Accessible
+{
+ private static final long serialVersionUID = -7642183829532984273L;
+
+ /**
+ * Provides accessibility support for CellRendererPanes.
+ */
+ protected class AccessibleCellRendererPane extends AccessibleAWTContainer
+ {
+ private static final long serialVersionUID = -8981090083147391074L;
+
+ /**
+ * Constructor AccessibleCellRendererPane
+ */
+ protected AccessibleCellRendererPane()
+ {
+ // Nothing to do here.
+ }
+
+ /**
+ * getAccessibleRole
+ * @return AccessibleRole
+ */
+ public AccessibleRole getAccessibleRole()
+ {
+ return AccessibleRole.PANEL;
+ }
+ }
+
+ /**
+ * accessibleContext
+ */
+ protected AccessibleContext accessibleContext = null;
+
+ /**
+ * Constructs a new CellRendererPane.
+ */
+ public CellRendererPane()
+ {
+ setVisible(false);
+ }
+
+ /**
+ * Should not be called.
+ *
+ * @param graphics not used here
+ */
+ public void update(Graphics graphics)
+ {
+ //Nothing to do here.
+ }
+
+ /**
+ * Despite normal behaviour this does <em>not</em> cause the container
+ * to be invalidated. This prevents propagating up the paint tree.
+ */
+ public void invalidate()
+ {
+ // Overridden to do nothing.
+ }
+
+ /**
+ * Should not be called.
+ *
+ * @param graphics not used here
+ */
+ public void paint(Graphics graphics)
+ {
+ // Overridden to do nothing.
+ }
+
+ /**
+ * Overridden to check if a component is already a child of this Container.
+ * If it's already a child, nothing is done. Otherwise we pass this to
+ * <code>super.addImpl()</code>.
+ *
+ * @param c the component to add
+ * @param constraints not used here
+ * @param index not used here
+ */
+ protected void addImpl(Component c, Object constraints, int index)
+ {
+ if (!isAncestorOf(c))
+ {
+ super.addImpl(c, constraints, index);
+ }
+ }
+
+ /**
+ * Paints the specified component <code>c</code> on the {@link Graphics}
+ * context <code>graphics</code>. The Graphics context is tranlated to
+ * (x,y) and the components bounds are set to (w,h). If
+ * <code>shouldValidate</code>
+ * is set to true, then the component is validated before painting.
+ *
+ * @param graphics the graphics context to paint on
+ * @param c the component to be painted
+ * @param p the parent of the component
+ * @param x the X coordinate of the upper left corner where c should
+ be painted
+ * @param y the Y coordinate of the upper left corner where c should
+ be painted
+ * @param w the width of the components drawing area
+ * @param h the height of the components drawing area
+ * @param shouldValidate if <code>c</code> should be validated before
+ * painting
+ */
+ public void paintComponent(Graphics graphics, Component c,
+ Container p, int x, int y, int w, int h,
+ boolean shouldValidate)
+ {
+ // reparent c
+ addImpl(c, null, 0);
+
+ Rectangle oldClip = graphics.getClipBounds();
+ boolean translated = false;
+ try
+ {
+ // translate to (x,y)
+ graphics.translate(x, y);
+ translated = true;
+ graphics.clipRect(0, 0, w, h);
+ // set bounds of c
+ c.setBounds(0, 0, w, h);
+
+ // validate if necessary
+ if (shouldValidate)
+ {
+ c.validate();
+ }
+
+ // paint component
+ c.paint(graphics);
+ }
+ finally
+ {
+ // untranslate g
+ if (translated)
+ graphics.translate(-x, -y);
+ graphics.setClip(oldClip);
+ }
+ }
+
+ /**
+ * Paints the specified component <code>c</code> on the {@link Graphics}
+ * context <code>graphics</code>. The Graphics context is tranlated to (x,y)
+ * and the components bounds are set to (w,h). The component is <em>not</em>
+ * validated before painting.
+ *
+ * @param graphics the graphics context to paint on
+ * @param c the component to be painted
+ * @param p the parent of the component
+ * @param x the X coordinate of the upper left corner where c should
+ be painted
+ * @param y the Y coordinate of the upper left corner where c should
+ be painted
+ * @param w the width of the components drawing area
+ * @param h the height of the components drawing area
+ */
+ public void paintComponent(Graphics graphics, Component c,
+ Container p, int x, int y, int w, int h)
+ {
+ paintComponent(graphics, c, p, x, y, w, h, false);
+ }
+
+ /**
+ * Paints the specified component <code>c</code> on the {@link Graphics}
+ * context <code>g</code>. The Graphics context is tranlated to (r.x,r.y) and
+ * the components bounds are set to (r.width,r.height).
+ * The component is <em>not</em>
+ * validated before painting.
+ *
+ * @param graphics the graphics context to paint on
+ * @param c the component to be painted
+ * @param p the component on which we paint
+ * @param r the bounding rectangle of c
+ */
+ public void paintComponent(Graphics graphics, Component c,
+ Container p, Rectangle r)
+ {
+ paintComponent(graphics, c, p, r.x, r.y, r.width, r.height);
+ }
+
+ /**
+ * getAccessibleContext <em>TODO</em>
+ * @return AccessibleContext
+ */
+ public AccessibleContext getAccessibleContext()
+ {
+ if (accessibleContext == null)
+ accessibleContext = new AccessibleCellRendererPane();
+
+ return accessibleContext;
+ }
+}