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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
commited5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch)
tree7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /toolkit/test/accessibility/EventQueue.java
parentInitial commit. (diff)
downloadlibreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.tar.xz
libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.zip
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'toolkit/test/accessibility/EventQueue.java')
-rw-r--r--toolkit/test/accessibility/EventQueue.java140
1 files changed, 140 insertions, 0 deletions
diff --git a/toolkit/test/accessibility/EventQueue.java b/toolkit/test/accessibility/EventQueue.java
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+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+import java.util.LinkedList;
+
+/** The event queue singleton dispatches events received from OpenOffice.org
+ applications in a thread separate from the AWB main thread.
+
+ The queue of event objects, LinkedList<Runnable> The queue object will
+ also serve as lock for the consumer/producer type synchronization.
+*/
+class EventQueue
+ implements Runnable
+{
+ private boolean mbVerbose = false;
+ private boolean mbHandleDisposingEventsSynchronous = true;
+
+ public synchronized static EventQueue Instance ()
+ {
+ if (maInstance == null)
+ maInstance = new EventQueue ();
+ return maInstance;
+ }
+
+ public void addEvent (Runnable aEvent)
+ {
+ synchronized (maMonitor)
+ {
+ if (mbVerbose)
+ System.out.println ("queueing regular event " + aEvent);
+ maRegularQueue.addLast (aEvent);
+ maMonitor.notify ();
+ }
+ }
+
+
+ public void addDisposingEvent (Runnable aEvent)
+ {
+ if (mbHandleDisposingEventsSynchronous)
+ aEvent.run ();
+ else
+ synchronized (maMonitor)
+ {
+ if (mbVerbose)
+ System.out.println ("queueing disposing event " + aEvent);
+ maDisposingQueue.addLast (aEvent);
+ maMonitor.notify ();
+ }
+ }
+
+
+ private EventQueue ()
+ {
+ maRegularQueue = new LinkedList<Runnable>();
+ maDisposingQueue = new LinkedList<Runnable>();
+ new Thread(this, "AWB.EventQueue").start();
+ }
+
+
+ /// This thread's main method: deliver all events
+ public void run()
+ {
+ // in an infinite loop, check for events to deliver, then
+ // wait on lock (which will be notified when new events arrive)
+ while( true )
+ {
+ Runnable aEvent = null;
+ do
+ {
+ synchronized (maMonitor)
+ {
+ if (maDisposingQueue.size() > 0)
+ {
+ aEvent = maDisposingQueue.removeFirst();
+ if (mbVerbose)
+ System.out.println ("delivering disposing event " + aEvent);
+ }
+ else if (maRegularQueue.size() > 0)
+ {
+ aEvent = maRegularQueue.removeFirst();
+ if (mbVerbose)
+ System.out.println ("delivering regular event " + aEvent);
+ }
+ else
+ aEvent = null;
+ }
+ if (aEvent != null)
+ {
+ try
+ {
+ aEvent.run();
+ }
+ catch( Throwable e )
+ {
+ System.out.println(
+ "caught exception during event delivery: " + e );
+ e.printStackTrace();
+ }
+ }
+ }
+ while( aEvent != null );
+
+ try
+ {
+ synchronized (maMonitor)
+ {
+ maMonitor.wait();
+ }
+ }
+ catch (Exception e)
+ {
+ // can't wait? odd!
+ System.err.println("Can't wait!");
+ e.printStackTrace();
+ }
+ }
+ }
+
+ private static EventQueue maInstance = null;
+ private final Object maMonitor = new Object();
+ private final LinkedList<Runnable> maRegularQueue;
+ private final LinkedList<Runnable> maDisposingQueue;
+}
+
+