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/*
* Copyright (c) 2002, 2023, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
@test
@bug 4683804
@summary Tests that in ClipboardOwner.lostOwnership() Clipboard.getContents()
returns actual contents of the clipboard and Clipboard.setContents()
can set contents of the clipboard and its owner. The clipboard is
the system clipboard.
@key headful
*/
import java.awt.Toolkit;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.ClipboardOwner;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.StringSelection;
import java.awt.datatransfer.Transferable;
public class SystemClipboardTest {
public static void main(String[] args) {
SystemClipboardOwner.run();
if (SystemClipboardOwner.failed) {
throw new RuntimeException("test failed: can not get actual " +
"contents of the clipboard or set owner of the clipboard");
} else {
System.err.println("test passed");
}
}
}
class SystemClipboardOwner implements ClipboardOwner {
static boolean failed;
private static final Object LOCK = new Object();
private static final int CHAIN_LENGTH = 5;
private final static Clipboard clipboard =
Toolkit.getDefaultToolkit().getSystemClipboard();
private int m, id;
public SystemClipboardOwner(int m) { this.m = m; id = m; }
public void lostOwnership(Clipboard cb, Transferable contents) {
System.err.println(id + " lost clipboard ownership");
Transferable t = getClipboardContents(cb, null);
String msg = null;
try {
msg = (String)t.getTransferData(DataFlavor.stringFlavor);
} catch (Exception e) {
System.err.println(id + " can't getTransferData: " + e);
}
System.err.println(id + " Clipboard.getContents(): " + msg);
if ( ! msg.equals( "" + (m+1) ) ) {
failed = true;
System.err.println(
"Clipboard.getContents() returned incorrect contents!");
}
m += 2;
if (m <= CHAIN_LENGTH) {
System.err.println(id + " Clipboard.setContents(): " + m);
setClipboardContents(cb, new StringSelection(m + ""), this);
}
synchronized (LOCK) {
if (m > CHAIN_LENGTH) {
LOCK.notifyAll();
}
}
}
public static void run() {
SystemClipboardOwner cbo1 = new SystemClipboardOwner(0);
System.err.println(cbo1.m + " Clipboard.setContents(): " + cbo1.m);
setClipboardContents(clipboard,
new StringSelection(cbo1.m + ""), cbo1);
SystemClipboardOwner cbo2 = new SystemClipboardOwner(1);
synchronized (LOCK) {
System.err.println(cbo2.m + " Clipboard.setContents(): " + cbo2.m);
setClipboardContents(clipboard,
new StringSelection(cbo2.m + ""), cbo2);
try {
LOCK.wait();
} catch (InterruptedException exc) {
exc.printStackTrace();
}
}
if (cbo1.m < CHAIN_LENGTH) {
failed = true;
System.err.println("chain of calls of lostOwnership() broken!");
}
}
private static void setClipboardContents(Clipboard cb,
Transferable contents,
ClipboardOwner owner) {
synchronized (cb) {
while (true) {
try {
cb.setContents(contents, owner);
return;
} catch (IllegalStateException ise) {
try { Thread.sleep(100); }
catch (InterruptedException e) { e.printStackTrace(); }
}
}
}
}
private static Transferable getClipboardContents(Clipboard cb,
Object requestor) {
synchronized (cb) {
while (true) {
try {
return cb.getContents(requestor);
} catch (IllegalStateException ise) {
try { Thread.sleep(100); }
catch (InterruptedException e) { e.printStackTrace(); }
}
}
}
}
}
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