org.smallmind.swing.button.ButtonRepeater Maven / Gradle / Ivy
/*
* Copyright (c) 2007 through 2024 David Berkman
*
* This file is part of the SmallMind Code Project.
*
* The SmallMind Code Project is free software, you can redistribute
* it and/or modify it under either, at your discretion...
*
* 1) The terms of GNU Affero General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at
* your option) any later version.
*
* ...or...
*
* 2) The terms of the Apache License, Version 2.0.
*
* The SmallMind Code Project 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 or Apache License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* and the Apache License along with the SmallMind Code Project. If not, see
* .
*
* Additional permission under the GNU Affero GPL version 3 section 7
* ------------------------------------------------------------------
* If you modify this Program, or any covered work, by linking or
* combining it with other code, such other code is not for that reason
* alone subject to any of the requirements of the GNU Affero GPL
* version 3.
*/
package org.smallmind.swing.button;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import javax.swing.JButton;
import javax.swing.SwingUtilities;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import org.smallmind.nutsnbolts.util.WeakEventListenerList;
import org.smallmind.scribe.pen.LoggerManager;
public class ButtonRepeater implements ChangeListener {
private final WeakEventListenerList listenerList;
private final JButton button;
private final AutoPress autoPress;
private final long delayMilliseconds;
private boolean armed = false;
public ButtonRepeater (JButton button, long delayMilliseconds) {
Thread autoThread;
this.button = button;
this.delayMilliseconds = delayMilliseconds;
autoPress = new AutoPress();
autoThread = new Thread(autoPress);
autoThread.start();
button.addChangeListener(this);
listenerList = new WeakEventListenerList();
}
public synchronized void addActionListener (ActionListener actionListener) {
listenerList.addListener(actionListener);
}
public synchronized void removeActionListener (ActionListener actionListener) {
listenerList.removeListener(actionListener);
}
public synchronized void stateChanged (ChangeEvent changeEvent) {
if (!armed) {
if (button.getModel().isPressed()) {
armed = true;
fireActionPereformed(new ActionEvent(button, 0, button.getActionCommand()));
}
} else if (!button.getModel().isPressed()) {
armed = false;
}
}
public void fireActionPereformed (ActionEvent actionEvent) {
for (ActionListener actionListener : listenerList) {
actionListener.actionPerformed(actionEvent);
}
}
private class DoClick implements Runnable {
public void run () {
fireActionPereformed(new ActionEvent(button, 0, button.getActionCommand()));
}
}
private class AutoPress implements Runnable {
private final CountDownLatch exitLatch;
private final CountDownLatch pulseLatch;
private final AtomicBoolean finished = new AtomicBoolean(false);
public AutoPress () {
pulseLatch = new CountDownLatch(1);
exitLatch = new CountDownLatch(1);
}
public void finish ()
throws InterruptedException {
if (finished.compareAndSet(false, true)) {
pulseLatch.countDown();
}
exitLatch.await();
}
public void run () {
try {
while (!finished.get()) {
try {
if (!armed) {
pulseLatch.await(100, TimeUnit.MILLISECONDS);
} else {
pulseLatch.await(delayMilliseconds, TimeUnit.MILLISECONDS);
if (armed) {
SwingUtilities.invokeLater(new DoClick());
}
}
} catch (InterruptedException interruptedException) {
LoggerManager.getLogger(ButtonRepeater.class).error(interruptedException);
}
}
} finally {
exitLatch.countDown();
}
}
}
}