103 lines
3.4 KiB
Java
103 lines
3.4 KiB
Java
/*
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The contents of this file are subject to the THDL Open Community License
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Version 1.0 (the "License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License on the THDL web site
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(http://www.thdl.org/).
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Software distributed under the License is distributed on an "AS IS" basis,
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WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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License for the specific terms governing rights and limitations under the
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License.
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The Initial Developer of this software is the Tibetan and Himalayan Digital
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Library (THDL). Portions created by the THDL are Copyright 2001-2003 THDL.
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All Rights Reserved.
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Contributor(s): ______________________________________.
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*/
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package org.thdl.tib.bibl;
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import java.io.*;
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import java.util.*;
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import javax.swing.*;
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import javax.swing.filechooser.*;
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import org.jdom.*;
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import org.jdom.input.*;
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import org.jdom.output.*;
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//import org.thdl.tib.bibl.shared.*;
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/**
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* <p>
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* TTFileView test to see if a file is an .xml file and if so, assumes it's a Tibbibl
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* and searches for the first <title> element and sets the file's description to that.
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* It then uses this description for the name of the text by overriding the {@link #getName} function.
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* This is used in for the {@link javax.swing.JFileChooser} in <code>FileAction</code> so that
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* when the open-file window appears it lists the text names instead of the file names.
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* </p>
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*
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* @author Than Garson, Tibetan and Himalayan Digital Library
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* @version 1.0
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*/
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public class TTFileView extends FileView implements TibConstants
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{
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private Hashtable fileDescs = new Hashtable(5);
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private XMLReader docHandler = new XMLReader();
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/**
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* <p>
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* Overrides the ancestor's--{@link FileView}--getName() function
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* so that it returns the text title as the name, if it is an XML file. This has the
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* effect of presenting a list of text names in the open dialog rather than their less
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* comprehensible file names.
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* </p>
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*
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* @param fl <code>File</code> whose name is requested.
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* @return <code>String</code> the description of the file which has been set to
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* the text title if it is an XML file.
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*
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*/
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public String getName(File fl) {
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if(getDescription(fl) == null && fl.getName().indexOf(".xml")>-1)
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putDescription(fl);
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return getDescription(fl);
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}
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/**
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* <p>
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* Adds a description to the file, if the file is an XML file and the <code>docHandler</code>,
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* that is an {@link XMLReader}, successfully processes the document and returns a {@link TibDoc}.
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* Furthermore, it must find a <title> element (the first in the document) with some text.
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* If all these conditions are met, the description of the file is set to the text of the title
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* element. Otherwise, the description is set to <code>null</code>.
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* </p>
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*/
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public void putDescription(File fl) {
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String fileDescription;
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if(docHandler.setDoc(fl))
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{
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try {
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org.jdom.Element td = docHandler.getRoot();
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org.jdom.Element th = td.getChild(HEAD).getChild(TITLE);
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fileDescription = th.getText();
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} catch (NullPointerException npe) {
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fileDescription = null;}
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} else {
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fileDescription = null;
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}
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if(fileDescription != null)
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fileDescs.put(fl,fileDescription.trim());
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}
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/**
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* Returns a human readable description of the file.
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*
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* @see FileView#getDescription
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*/
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public String getDescription(File f) {
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return (String) fileDescs.get(f);
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};
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}
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