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Groovy: A powerful, dynamic language for the JVM
/**
* 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
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.codehaus.groovy.binding;
import javax.swing.Timer;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
/**
* @author Danno Ferrin
* @since Groovy 1.1
*/
public class SwingTimerTriggerBinding implements TriggerBinding {
public FullBinding createBinding(SourceBinding source, TargetBinding target) {
return new SwingTimerFullBinding((ClosureSourceBinding) source, target);
}
}
/**
* @author Danno Ferrin
* @since Groovy 1.1
*/
class SwingTimerFullBinding extends AbstractFullBinding implements ActionListener {
Timer timer;
long startTime;
long duration;
int stepSize;
boolean reportSteps;
boolean reportFraction;
boolean reportElapsed;
boolean repeat;
boolean bound;
SwingTimerFullBinding(ClosureSourceBinding source, TargetBinding target) {
this(source, target, 50, 1000);
}
SwingTimerFullBinding(SourceBinding source, TargetBinding target, int interval, int duration) {
setSourceBinding(source);
setTargetBinding(target);
timer = new Timer(interval, this);
timer.setInitialDelay(0);
timer.setRepeats(true);
this.duration = duration;
}
void resetTimer() {
timer.stop();
startTime = System.currentTimeMillis();
timer.start();
}
public void bind() {
if (!bound) {
resetTimer();
bound = true;
}
}
public void unbind() {
if (bound) {
timer.stop();
bound = false;
}
}
public void rebind() {
if (bound) {
resetTimer();
}
}
public void actionPerformed(ActionEvent e) {
long currentTime = System.currentTimeMillis();
long elapsed = currentTime - startTime;
if (elapsed >= duration) {
if (repeat) {
startTime = currentTime;
} else {
timer.stop();
}
// no over-runs...
elapsed = duration;
}
// calculate
if (reportSteps) {
((ClosureSourceBinding)sourceBinding).setClosureArgument(
Integer.valueOf((int) (elapsed / stepSize)));
} else if (reportFraction) {
((ClosureSourceBinding)sourceBinding).setClosureArgument(
new Float((float) elapsed / (float) duration));
//in Groovy2.0 use valueOf
} else if (reportElapsed) {
((ClosureSourceBinding)sourceBinding).setClosureArgument(
new Long(elapsed));
//in Groovy2.0 use valueOf
}
update();
}
public long getDuration() {
return duration;
}
public void setDuration(long duration) {
this.duration = duration;
}
public int getInterval() {
return timer.getDelay();
}
public void setInterval(int interval) {
timer.setDelay(interval);
}
public int getStepSize() {
return stepSize;
}
public void setStepSize(int stepSize) {
this.stepSize = stepSize;
}
public boolean isCoalesce() {
return timer.isCoalesce();
}
public void setCoalesce(boolean coalesce) {
timer.setCoalesce(coalesce);
}
public boolean isReportSteps() {
return reportSteps;
}
public void setReportSteps(boolean reportSteps) {
this.reportSteps = reportSteps;
}
public boolean isReportFraction() {
return reportFraction;
}
public void setReportFraction(boolean reportFraction) {
this.reportFraction = reportFraction;
}
public boolean isReportElapsed() {
return reportElapsed;
}
public void setReportElapsed(boolean reportElapsed) {
this.reportElapsed = reportElapsed;
}
public boolean isRepeat() {
return repeat;
}
public void setRepeat(boolean repeat) {
this.repeat = repeat;
}
}