/*******************************************************************************
* Copyright 2011 See AUTHORS file.
*
* Licensed 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 com.badlogic.gdx.scenes.scene2d.utils;
import com.badlogic.gdx.scenes.scene2d.Actor;
import com.badlogic.gdx.scenes.scene2d.Event;
import com.badlogic.gdx.scenes.scene2d.EventListener;
/** Listener for {@link ChangeEvent}.
* @author Nathan Sweet */
abstract public class ChangeListener implements EventListener {
public boolean handle (Event event) {
if (!(event instanceof ChangeEvent)) return false;
changed((ChangeEvent)event, event.getTarget());
return false;
}
/** @param actor The event target, which is the actor that emitted the change event. */
abstract public void changed (ChangeEvent event, Actor actor);
/** Fired when something in an actor has changed. This is a generic event, exactly what changed in an actor will vary.
* @author Nathan Sweet */
static public class ChangeEvent extends Event {
}
}