79 lines
2.8 KiB
Java
79 lines
2.8 KiB
Java
/* ====================================================================
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==================================================================== */
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package org.apache.poi.poifs.poibrowser;
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import java.awt.*;
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import javax.swing.*;
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import javax.swing.tree.*;
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/**
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* <p>{@link TreeCellRenderer} for a {@link DocumentDescriptor}. The
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* renderer is extremly rudimentary since displays only the document's
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* name, its size and its fist few bytes.</p>
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*
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* @author Rainer Klute <a
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* href="mailto:klute@rainer-klute.de"><klute@rainer-klute.de></a>
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*/
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public class DocumentDescriptorRenderer extends DefaultTreeCellRenderer
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{
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public Component getTreeCellRendererComponent(final JTree tree,
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final Object value,
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final boolean selected,
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final boolean expanded,
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final boolean leaf,
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final int row,
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final boolean hasFocus)
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{
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final DocumentDescriptor d = (DocumentDescriptor)
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((DefaultMutableTreeNode) value).getUserObject();
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final JPanel p = new JPanel();
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final JTextArea text = new JTextArea();
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text.append(renderAsString(d));
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text.setFont(new Font("Monospaced", Font.PLAIN, 10));
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p.add(text);
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if (selected)
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Util.invert(text);
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return p;
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}
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/**
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* <p>Renders {@link DocumentDescriptor} as a string.</p>
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*/
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protected String renderAsString(final DocumentDescriptor d)
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{
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final StringBuffer b = new StringBuffer();
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b.append("Name: ");
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b.append(d.name);
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b.append(" (");
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b.append(Codec.hexEncode(d.name));
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b.append(") \n");
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b.append("Size: ");
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b.append(d.size);
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b.append(" bytes\n");
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b.append("First bytes: ");
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b.append(Codec.hexEncode(d.bytes));
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return b.toString();
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}
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}
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