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1
2 import java.awt.event.ActionEvent  ;
3 import java.io.File ;
4 import java.net.MalformedURLException ;
5 import java.util.ArrayList ;
6 import javax.swing.AbstractAction ;
7 import javax.swing.Action ;
8 import javax.swing.JComponent ;
9 import javax.swing.JDialog ;
10 import javax.swing.JEditorPane ;
11 import javax.swing.JFrame ;
12 import org.netbeans.spi.viewmodel.Models;
13 import org.netbeans.spi.viewmodel.NodeActionsProvider;
14 import org.netbeans.spi.viewmodel.NodeModel;
15 import org.netbeans.spi.viewmodel.TreeModel;
16 import org.netbeans.spi.viewmodel.TreeModelListener;
17
18 public class TreeModelExample3 implements TreeModel, NodeModel, NodeActionsProvider {
19
20 public Object [] getChildren (Object parent, int from, int to) {
21 if (parent == ROOT)
22 return File.listRoots ();
23 return ((File ) parent).listFiles ();
24 }
25
26 public Object getRoot () {
27 return ROOT;
28 }
29
30 public boolean isLeaf (Object node) {
31 if (node == ROOT)
32 return false;
33 return ((File ) node).isFile ();
34 }
35
36 public void addTreeModelListener (TreeModelListener l) {}
37 public void removeTreeModelListener (TreeModelListener l) {}
38
39 public String getDisplayName (Object node) {
40 if (node == ROOT) return "Name";
41 String name = ((File ) node).getName ();
42 if (name.length () < 1) return ((File ) node).getAbsolutePath ();
43 return name;
44 }
45
46 public String getIconBase (Object node) {
47 if (node == ROOT) return "folder";
48 if (((File ) node).isDirectory ()) return "folder";
49 return "file";
50 }
51
52 public String getShortDescription (Object node) {
53 if (node == ROOT) return "Name";
54 return ((File ) node).getAbsolutePath ();
55 }
56
57 public Action [] getActions (final Object node) {
58 return new Action [] {
59 new AbstractAction ("Open") {
60 public void actionPerformed (ActionEvent e) {
61 performDefaultAction (node);
62 }
63 },
64 new AbstractAction ("Delete") {
65 public void actionPerformed (ActionEvent e) {
66 ((File ) node).delete ();
67 }
68 }
69 };
70 }
71
72 public void performDefaultAction (Object node) {
73 try {
74 JFrame f = new JFrame ("View");
75 f.getContentPane ().add (new JEditorPane (((File ) node).toURL ()));
76 f.pack ();
77 f.show ();
78 } catch (Exception e) {
79 e.printStackTrace();
80 }
81 }
82
83 public static void main (String [] args) {
84 TreeModelExample3 tme = new TreeModelExample3 ();
85 JComponent ttv = Models.createView (
86 tme, tme, null, tme, new ArrayList () );
92 JFrame f = new JFrame ("Tree Model Example 3");
93 f.getContentPane ().add (ttv);
94 f.pack ();
95 f.show ();
96 }
97 }
98 |
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Java API By Example, From Geeks To Geeks.