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/**
* File for the CountdownExitButton class.
*/
package de.fhswf.in.inf.java2.aufgabe04;
import javafx.animation.KeyFrame;
import javafx.animation.Timeline;
import javafx.scene.control.Button;
import javafx.util.Duration;
/**
* A class that fires automatically after a given interval.
*
* @author Stefan Suhren
* @version 1.0
*/
public class CountdownExitButton extends Button
{
private int countdown = 30;
private Timeline timeline = new Timeline();
/**
* A Button that exits the application.
*
* @param text
* The text that will be displayed
* @param countdown
* The time in seconds till the button fires
*/
public CountdownExitButton(String text, int countdown)
{
super(text);
setCountdown(countdown);
timeline.setCycleCount(Timeline.INDEFINITE);
timeline
.getKeyFrames()
.add(new KeyFrame(
Duration.seconds(1),
(e -> {
CountdownExitButton.this
.setText(CountdownExitButton.this
.getText()
.replaceAll(
"\\("
+ CountdownExitButton.this.countdown
+ "\\)$",
"("
+ --CountdownExitButton.this.countdown
+ ")"));
if (CountdownExitButton.this.countdown <= 0)
{
CountdownExitButton.this.stopCountdown();
CountdownExitButton.this.fire();
}
})));
}
/**
* Starts the countdown.
*
*/
public void startCountdown()
{
setText(getText() + " (" + countdown + ")");
timeline.playFromStart();
}
/**
* Stops the countdown without the button fire event.
*
*/
public void stopCountdown()
{
timeline.stop();
setText(getText().replaceAll(
"\\(" + CountdownExitButton.this.countdown + "\\)$", ""));
}
/**
* Set the countdown.
*
* @param countdown
* The time in seconds till the button fires.
*/
public void setCountdown(int countdown)
{
if (countdown < 0)
{
throw new IllegalArgumentException("Countdown can't be negative.");
}
this.countdown = countdown;
}
/**
* Get the countdown.
*
* @return The countdown in seconds.
*/
public int getCountdown()
{
return countdown;
}
/* (non-Javadoc)
* @see javafx.scene.control.Button#fire()
*/
@Override
public void fire()
{
stopCountdown();
super.fire();
}
}
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