CustomClassLoaderTransferTest.java revision 14851:980da45565c8 
1/*
2  @test
3  @key headful
4  @bug 4932376
5  @summary verifies that data transfer within one JVM works correctly if
6           the transfer data was created with a custom class loader.
7  @author das@sparc.spb.su area=datatransfer
8  @library ../../regtesthelpers
9  @build TransferableList AnotherInterface CopyClassFile CustomClassLoaderTransferTest
10  @run main CopyClassFile -r ListInterface subdir/
11  @run main CopyClassFile -r TransferableList subdir/
12  @run main CustomClassLoaderTransferTest
13*/
14
15import java.awt.*;
16import java.awt.datatransfer.*;
17import java.io.*;
18import java.net.URL;
19import java.net.URLClassLoader;
20
21public class CustomClassLoaderTransferTest {
22    public static class DFTransferable implements Transferable {
23        private final DataFlavor df;
24        private final Object obj;
25        public DFTransferable(DataFlavor df, Object obj) {
26            this.df = df;
27            this.obj = obj;
28        }
29
30        @Override
31        public Object getTransferData(DataFlavor flavor)
32          throws UnsupportedFlavorException, IOException {
33            if (df.equals(flavor)) {
34                return obj;
35            } else {
36                throw new UnsupportedFlavorException(flavor);
37            }
38        }
39
40        @Override
41        public DataFlavor[] getTransferDataFlavors(){
42            return new DataFlavor[] { df };
43        }
44
45        @Override
46        public boolean isDataFlavorSupported(DataFlavor flavor) {
47            return df.equals(flavor);
48        }
49    }
50
51    public static void main(String[] args) throws Exception {
52        Clipboard c = Toolkit.getDefaultToolkit().getSystemClipboard();
53        URL url = new File("./subdir/").toURL();
54        ClassLoader classLoader = new URLClassLoader(new URL[] { url },
55                CustomClassLoaderTransferTest.class.getClassLoader());
56        Class clazz = Class.forName("TransferableList", true, classLoader);
57        DataFlavor df = new DataFlavor(clazz, "Transferable List");
58        Object obj = clazz.newInstance();
59        Transferable t = new DFTransferable(df, obj);
60        c.setContents(t, null);
61        Transferable ct = c.getContents(null);
62        ct.getTransferData(df);
63    }
64}
65