jdk/src/java.desktop/share/classes/sun/java2d/pipe/hw/AccelDeviceEventNotifier.java
--- a/jdk/src/java.desktop/share/classes/sun/java2d/pipe/hw/AccelDeviceEventNotifier.java Thu Oct 06 18:05:44 2016 -0700
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,169 +0,0 @@
-/*
- * Copyright (c) 2007, 2013, 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. Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * 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.
- */
-
-package sun.java2d.pipe.hw;
-
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.Iterator;
-import java.util.Map;
-import java.util.Set;
-import java.lang.annotation.Native;
-
-
-/**
- * This class is used to notify listeners about accelerated device's
- * events such as device reset or dispose that are about to occur.
- */
-public class AccelDeviceEventNotifier {
-
- private static AccelDeviceEventNotifier theInstance;
-
- /**
- * A device is about to be reset. The listeners have to release all
- * resources associated with the device which are required for the device
- * to be reset.
- */
- @Native public static final int DEVICE_RESET = 0;
-
- /**
- * A device is about to be disposed. The listeners have to release all
- * resources associated with the device.
- */
- @Native public static final int DEVICE_DISPOSED = 1;
-
- private final Map<AccelDeviceEventListener, Integer> listeners;
-
- private AccelDeviceEventNotifier() {
- listeners = Collections.synchronizedMap(
- new HashMap<AccelDeviceEventListener, Integer>(1));
- }
-
- /**
- * Returns a singleton of AccelDeviceEventNotifier if it exists. If the
- * passed boolean is false and singleton doesn't exist yet, null is
- * returned. If the passed boolean is {@code true} and singleton doesn't
- * exist it will be created and returned.
- *
- * @param create whether to create a singleton instance if doesn't yet
- * exist
- * @return a singleton instance or null
- */
- private static synchronized
- AccelDeviceEventNotifier getInstance(boolean create)
- {
- if (theInstance == null && create) {
- theInstance = new AccelDeviceEventNotifier();
- }
- return theInstance;
- }
-
- /**
- * Called to indicate that a device event had occurred.
- * If a singleton exists, the listeners (those associated with
- * the device) will be notified.
- *
- * @param screen a screen number of the device which is a source of
- * the event
- * @param eventType a type of the event
- * @see #DEVICE_DISPOSED
- * @see #DEVICE_RESET
- */
- public static final void eventOccured(int screen, int eventType) {
- AccelDeviceEventNotifier notifier = getInstance(false);
- if (notifier != null) {
- notifier.notifyListeners(eventType, screen);
- }
- }
-
- /**
- * Adds the listener associated with a device on particular screen.
- *
- * Note: the listener must be removed as otherwise it will forever
- * be referenced by the notifier.
- *
- * @param l the listener
- * @param screen the screen number indicating which device the listener is
- * interested in.
- */
- public static final void addListener(AccelDeviceEventListener l,int screen){
- getInstance(true).add(l, screen);
- }
-
- /**
- * Removes the listener.
- *
- * @param l the listener
- */
- public static final void removeListener(AccelDeviceEventListener l) {
- getInstance(true).remove(l);
- }
-
- private final void add(AccelDeviceEventListener theListener, int screen) {
- listeners.put(theListener, screen);
- }
- private final void remove(AccelDeviceEventListener theListener) {
- listeners.remove(theListener);
- }
-
- /**
- * Notifies the listeners associated with the screen's device about the
- * event.
- *
- * Implementation note: the current list of listeners is first duplicated
- * which allows the listeners to remove themselves during the iteration.
- *
- * @param screen a screen number with which the device which is a source of
- * the event is associated with
- * @param deviceEventType a type of the event
- * @see #DEVICE_DISPOSED
- * @see #DEVICE_RESET
- */
- private final void notifyListeners(int deviceEventType, int screen) {
- HashMap<AccelDeviceEventListener, Integer> listClone;
- Set<AccelDeviceEventListener> cloneSet;
-
- synchronized(listeners) {
- listClone =
- new HashMap<AccelDeviceEventListener, Integer>(listeners);
- }
-
- cloneSet = listClone.keySet();
- Iterator<AccelDeviceEventListener> itr = cloneSet.iterator();
- while (itr.hasNext()) {
- AccelDeviceEventListener current = itr.next();
- Integer i = listClone.get(current);
- // only notify listeners which are interested in this device
- if (i != null && i.intValue() != screen) {
- continue;
- }
- if (deviceEventType == DEVICE_RESET) {
- current.onDeviceReset();
- } else if (deviceEventType == DEVICE_DISPOSED) {
- current.onDeviceDispose();
- }
- }
- }
-}