Author: gbrown
Date: Thu May 20 13:24:52 2010
New Revision: 946622
URL: http://svn.apache.org/viewvc?rev=946622&view=rev
Log:
Update drag/drop tutorial to use signed JARs (latest JRE security updates
appear to have disabled untrusted access to native drag/drop); apply workaround
for apparent issue with Executors.newCachedThreadPool() when running as an
applet (IllegalThreadStateExceptions are thrown periodically and seemingly
unpredictably).
Modified:
pivot/trunk/core/src/org/apache/pivot/util/concurrent/Task.java
pivot/trunk/tutorials/www/drag-and-drop.xml
Modified: pivot/trunk/core/src/org/apache/pivot/util/concurrent/Task.java
URL:
http://svn.apache.org/viewvc/pivot/trunk/core/src/org/apache/pivot/util/concurrent/Task.java?rev=946622&r1=946621&r2=946622&view=diff
==============================================================================
--- pivot/trunk/core/src/org/apache/pivot/util/concurrent/Task.java (original)
+++ pivot/trunk/core/src/org/apache/pivot/util/concurrent/Task.java Thu May 20
13:24:52 2010
@@ -16,8 +16,9 @@
*/
package org.apache.pivot.util.concurrent;
+import java.util.concurrent.AbstractExecutorService;
import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
/**
* Abstract base class for "tasks". A task is an asynchronous operation that
@@ -64,6 +65,42 @@ public abstract class Task<V> {
}
}
+ private static class DefaultExecutorService extends
AbstractExecutorService {
+ private boolean shutdown = false;
+
+ @Override
+ public boolean awaitTermination(long timeout, TimeUnit unit) throws
InterruptedException {
+ return true;
+ }
+
+ @Override
+ public void shutdown() {
+ shutdownNow();
+ }
+
+ @Override
+ public java.util.List<Runnable> shutdownNow() {
+ shutdown = true;
+ return new java.util.ArrayList<Runnable>();
+ }
+
+ @Override
+ public boolean isShutdown() {
+ return shutdown;
+ }
+
+ @Override
+ public boolean isTerminated() {
+ return isShutdown();
+ }
+
+ @Override
+ public void execute(Runnable command) {
+ Thread thread = new Thread(command);
+ thread.start();
+ }
+ }
+
private ExecutorService executorService;
private V result = null;
@@ -73,11 +110,9 @@ public abstract class Task<V> {
protected volatile long timeout = Long.MAX_VALUE;
protected volatile boolean abort = false;
- public static final ExecutorService DEFAULT_EXECUTOR_SERVICE;
-
- static {
- DEFAULT_EXECUTOR_SERVICE = Executors.newCachedThreadPool();
- }
+ // TODO This is a workaround for an issue with
Executors.newCachedThreadPool(), which
+ // unpredictably throws IllegalThreadStateException when run in an applet.
+ public static final ExecutorService DEFAULT_EXECUTOR_SERVICE = new
DefaultExecutorService();
public Task() {
this(DEFAULT_EXECUTOR_SERVICE);
Modified: pivot/trunk/tutorials/www/drag-and-drop.xml
URL:
http://svn.apache.org/viewvc/pivot/trunk/tutorials/www/drag-and-drop.xml?rev=946622&r1=946621&r2=946622&view=diff
==============================================================================
--- pivot/trunk/tutorials/www/drag-and-drop.xml (original)
+++ pivot/trunk/tutorials/www/drag-and-drop.xml Thu May 20 13:24:52 2010
@@ -31,7 +31,9 @@ limitations under the License.
<p>
Like the clipboard, drag and drop is a common metaphor for data
transfer. By clicking
and dragging with the mouse, the user can move, copy, or link data
within or between
- applications.
+ applications. It is signed to allow drag/drop integration with
other applications; as
+ with the clipboard, untrusted applications can only perform local
drag and drop
+ operations.
</p>
<p>
@@ -45,7 +47,7 @@ limitations under the License.
<td rowspan="2">
<application class="org.apache.pivot.wtk.ScriptApplication"
width="420" height="240">
- <libraries>
+ <libraries signed="true">
<library>core</library>
<library>wtk</library>
<library>wtk-terra</library>
