59 lines
1.7 KiB
Java
59 lines
1.7 KiB
Java
/*
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* Copyright 2021 dorkbox, llc
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package dorkbox.swingActiveRender;
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import java.awt.AWTEvent;
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import java.awt.EventQueue;
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import java.awt.Toolkit;
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public final
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class SynchronizedEventQueue extends EventQueue {
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public static final Object MUTEX = new Object();
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private static final SynchronizedEventQueue instance = new SynchronizedEventQueue();
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private static volatile boolean alreadyInUse = false;
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public static synchronized
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void install() {
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if (!alreadyInUse) {
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// set up the synchronized event queue
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EventQueue eventQueue = Toolkit.getDefaultToolkit()
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.getSystemEventQueue();
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eventQueue.push(instance);
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alreadyInUse = true;
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}
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}
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/**
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* Enforce singleton property.
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*/
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private
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SynchronizedEventQueue() {
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}
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@Override
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protected
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void dispatchEvent(AWTEvent aEvent) {
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synchronized (MUTEX) {
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try {
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super.dispatchEvent(aEvent);
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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}
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}
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