AbstractFileEditor


1   /*
2     Copyright (C) 2004 Renaud Pawlak, Laurent Martelli
3     
4     This program is free software; you can redistribute it and/or modify
5     it under the terms of the GNU Lesser General Public License as
6     published by the Free Software Foundation; either version 2 of the
7     License, or (at your option) any later version.
8   
9     This program is distributed in the hope that it will be useful,
10    but WITHOUT ANY WARRANTY; without even the implied warranty of
11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12    GNU Lesser General Public License for more details.
13  
14    You should have received a copy of the GNU Lesser General Public License
15    along with this program; if not, write to the Free Software
16    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
17  
18  package org.objectweb.jac.aspects.gui.swing;
19  
20  import java.awt.Dimension  ;
21  import java.awt.Insets  ;
22  import java.awt.event.ActionEvent  ;
23  import java.awt.event.ActionListener  ;
24  import java.io.File  ;
25  import javax.swing.JButton  ;
26  import javax.swing.JFileChooser  ;
27  import org.objectweb.jac.aspects.gui.FieldEditor;
28  import org.objectweb.jac.aspects.gui.Length;
29  import org.objectweb.jac.aspects.gui.ResourceManager;
30  import org.objectweb.jac.core.rtti.FieldItem;
31  
32  /**
33   * Base class for file related types. It shows a TextField and a
34   * button to show a file chooser.
35   */
36  public abstract class AbstractFileEditor extends TextFieldEditor
37      implements FieldEditor, ActionListener  
38  {
39     /**
40      * Constructs a new File editor.
41      */
42      public AbstractFileEditor(Object   substance, FieldItem field) {
43          super(substance,field);
44          textField = new JTextField(20);
45          textField.addFocusListener(this);
46          add(textField);
47  
48          JButton   button = new JButton  (ResourceManager.getIconResource("open_icon"));
49          button.setToolTipText("Edit");
50          button.setActionCommand("choose");
51          button.addActionListener(this);
52          button.setMargin(new Insets  (1,1,1,1));
53          add(button);
54      }
55  
56      /**
57       * Handles the actions performed by the users on this view.
58       *
59       * <p>On an URL editor, a "choose" action can be performed to allow
60       * the user to open a file chooser box and to navigate within the
61       * file system to choose his file.
62       *
63       * @param evt the performed action 
64       */
65      public void actionPerformed(ActionEvent   evt) {
66          if (evt.getActionCommand().equals("choose")) {
67              JFileChooser   chooser = createFileChooser();
68              int returnVal = chooser.showOpenDialog(this);
69           
70              if (returnVal==JFileChooser.APPROVE_OPTION) {
71                  textField.setText(chooser.getSelectedFile().toString());
72              }
73          }
74      }
75  
76      /**
77       * Returns a file chooser initialized with the current value
78       */
79      JFileChooser   createFileChooser() {
80          return new JFileChooser  ();
81      }
82  
83      public void setValue(Object   value) {
84          super.setValue(value);
85          if (value==null) 
86              textField.setText("");
87          else
88              textField.setText(value.toString());
89      }
90  }
91
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