projmi/src/main/java/de/uniluebeck/mi/projmi6/view/MessageIcon.java

package de.uniluebeck.mi.projmi6.view;

import javafx.animation.FadeTransition;
import javafx.animation.Timeline;
import javafx.animation.Transition;
import javafx.beans.binding.Bindings;
import javafx.beans.property.SimpleIntegerProperty;
import javafx.geometry.Pos;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.util.Duration;

/**
 * Created by Johannes on 21/11/2015.
 */
public class MessageIcon extends Button {

    private ImageView imageView;

    private Label messageCountLabel;

    private final SimpleIntegerProperty messageCount = new SimpleIntegerProperty(this, "messageCount", 0);

    FadeTransition transition;

    public  MessageIcon(){
        imageView = new ImageView(new Image("message.png"));
        imageView.setFitHeight(30);
        imageView.setFitWidth(30);
       /* imageView.opacityProperty().bind(Bindings.createDoubleBinding(
                ()->messageCount.get()>0? 1.0 : 0.5, messageCount));*/


        messageCountLabel = new Label();
        messageCountLabel.textProperty().bind(messageCount.asString());
        StackPane.setAlignment(messageCountLabel, Pos.BOTTOM_RIGHT);
        messageCountLabel.setTextFill(Color.BLACK);

        this.disableProperty().bind(messageCount.lessThanOrEqualTo(0));

        StackPane graphic = new StackPane(imageView, messageCountLabel);
        this.setGraphic(graphic);

        initTransition();

    }

    private void initTransition(){
        transition = new FadeTransition(Duration.millis(500), imageView);
        transition.setFromValue(0.5);
        transition.setToValue(1.0);
        transition.setCycleCount(Timeline.INDEFINITE);
        transition.setAutoReverse(true);
        messageCount.addListener((observable, oldValue, newValue) -> {
            if(messageCount.get()>0){
                transition.play();
            }else{
                transition.stop();

            }
        });
    }

    public int getMessageCount() {
        return messageCount.get();
    }

    public SimpleIntegerProperty messageCountProperty() {
        return messageCount;
    }

    public void setMessageCount(int messageCount) {
        this.messageCount.set(messageCount);
    }



}