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 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. 
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 * modification, are permitted provided that the following conditions are met:
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 *     this list of conditions and the following disclaimer.
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 *     this list of conditions and the following disclaimer in the documentation
 *     and/or other materials provided with the distribution.
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 *     may be used to endorse or promote products derived from this software 
 *     without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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package pathanimation;

import javafx.animation.Interpolator;
import javafx.animation.transition.FadeTransition;
import javafx.scene.CustomNode;


public abstract class Scenario extends CustomNode {
    var fadein = FadeTransition {
        node: this
        fromValue: bind this.opacity
        toValue: 1
        duration: 2s
        interpolator: Interpolator.EASEOUT
    };

    var fadeout = FadeTransition {
        node: this
        fromValue: bind this.opacity
        toValue: 0
        duration: 2s
        interpolator: Interpolator.EASEOUT
    };

    public var running: Boolean on replace {
        if (running) then play() else pause();
    }

    protected abstract function play(): Void;
    protected abstract function pause(): Void;

    public function fadeIn() {
        if (running) then play();
        fadeout.stop();
        fadein.play();
    }

    public function fadeOut() {
        fadein.stop();
        fadeout.play();
        pause();
    }
}