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Java > Open Source Codes > com > lowagie > tools > arguments > ImageArgument


1 /*
2  * $Id: ImageArgument.java,v 1.2 2005/03/25 14:35:04 blowagie Exp $
3  * $Name: $
4  *
5  * Copyright 2005 by Bruno Lowagie.
6  *
7  * The contents of this file are subject to the Mozilla Public License Version 1.1
8  * (the "License"); you may not use this file except in compliance with the License.
9  * You may obtain a copy of the License at http://www.mozilla.org/MPL/
10  *
11  * Software distributed under the License is distributed on an "AS IS" basis,
12  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13  * for the specific language governing rights and limitations under the License.
14  *
15  * The Original Code is 'iText, a free JAVA-PDF library'.
16  *
17  * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
18  * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
19  * All Rights Reserved.
20  * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
21  * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
22  *
23  * Contributor(s): all the names of the contributors are added in the source code
24  * where applicable.
25  *
26  * Alternatively, the contents of this file may be used under the terms of the
27  * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
28  * provisions of LGPL are applicable instead of those above. If you wish to
29  * allow use of your version of this file only under the terms of the LGPL
30  * License and not to allow others to use your version of this file under
31  * the MPL, indicate your decision by deleting the provisions above and
32  * replace them with the notice and other provisions required by the LGPL.
33  * If you do not delete the provisions above, a recipient may use your version
34  * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
35  *
36  * This library is free software; you can redistribute it and/or modify it
37  * under the terms of the MPL as stated above or under the terms of the GNU
38  * Library General Public License as published by the Free Software Foundation;
39  * either version 2 of the License, or any later version.
40  *
41  * This library is distributed in the hope that it will be useful, but WITHOUT
42  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
43  * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
44  * details.
45  *
46  * If you didn't download this code from the following link, you should check if
47  * you aren't using an obsolete version:
48  * http://www.lowagie.com/iText/
49  */
50 package com.lowagie.tools.arguments;
51
52 import java.awt.event.ActionEvent;
53
54 import javax.swing.JFileChooser;
55 import javax.swing.filechooser.FileFilter;
56
57 import com.lowagie.text.Image;
58 import com.lowagie.tools.plugins.AbstractTool;
59
60 /**
61  * ToolArgument class if the argument is a com.lowagie.text.Image.
62  */
63 public class ImageArgument extends ToolArgument {
64     /** a filter to put on the FileChooser. */
65     private FileFilter filter;
66     
67     /**
68      * Constructs a FileArgument.
69      * @param tool the tool that needs this argument
70      * @param name the name of the argument
71      * @param description the description of the argument
72      * @param filter a custom filter
73      */
74     public ImageArgument(AbstractTool tool, String name, String description, FileFilter filter) {
75         super(tool, name, description, Image.class.getName());
76         this.filter = filter;
77     }
78     
79     /**
80      * Constructs a FileArgument.
81      * @param tool the tool that needs this argument
82      * @param name the name of the argument
83      * @param description the description of the argument
84      */
85     public ImageArgument(AbstractTool tool, String name, String description) {
86         this(tool, name, description, new ImageFilter());
87     }
88     
89     /**
90      * Gets the argument as an object.
91      * @return an object
92      * @throws InstantiationException
93      */
94     public Object getArgument() throws InstantiationException {
95         if (value == null) return null;
96         try {
97             return Image.getInstance(value);
98         } catch (Exception e) {
99             throw new InstantiationException(e.getMessage());
100         }
101     }
102     
103     /**
104      * @see java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent)
105      */
106     public void actionPerformed(ActionEvent e) {
107         JFileChooser fc = new JFileChooser();
108         if (filter != null) fc.setFileFilter(filter);
109         fc.showOpenDialog(tool.getInternalFrame());
110         try {
111             setValue(fc.getSelectedFile().getAbsolutePath());
112         }
113         catch(NullPointerException npe) {
114         }
115     }
116
117 }
118
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