poi/src/contrib/src/org/apache/poi/contrib/poibrowser/DocumentDescriptorRenderer....

121 lines
4.6 KiB
Java

/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
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* 2. Redistributions in binary form must reproduce the above copyright
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* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
* Portions of this software are based upon public domain software
* originally written at the National Center for Supercomputing Applications,
* University of Illinois, Urbana-Champaign.
*/
package org.apache.poi.contrib.poibrowser;
import java.awt.*;
import javax.swing.*;
import javax.swing.tree.*;
/**
* <p>{@link TreeCellRenderer} for a {@link DocumentDescriptor}. The
* renderer is extremly rudimentary since displays only the document's
* name, its size and its fist few bytes.</p>
*
* @author Rainer Klute (klute@rainer-klute.de)
* @version $Id$
* @since 2002-02-05
*/
public class DocumentDescriptorRenderer extends DefaultTreeCellRenderer
{
public Component getTreeCellRendererComponent(final JTree tree,
final Object value,
final boolean selected,
final boolean expanded,
final boolean leaf,
final int row,
final boolean hasFocus)
{
final DocumentDescriptor d = (DocumentDescriptor)
((DefaultMutableTreeNode) value).getUserObject();
final JPanel p = new JPanel();
final JTextArea text = new JTextArea();
text.append(renderAsString(d));
text.setFont(new Font("Monospaced", Font.PLAIN, 10));
p.add(text);
if (selected)
Util.invert(text);
return p;
}
/**
* <p>Renders {@link DocumentDescriptor} as a string.</p>
*/
protected String renderAsString(final DocumentDescriptor d)
{
final StringBuffer b = new StringBuffer();
b.append("Name: ");
b.append(d.name);
b.append(" (");
b.append(Codec.hexEncode(d.name));
b.append(") \n");
b.append("Size: ");
b.append(d.size);
b.append(" bytes\n");
b.append("First bytes: ");
b.append(Codec.hexEncode(d.bytes));
return b.toString();
}
}