/*
 * The MIT License
 *
 * Copyright (c) 2015 Misakura.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package jp.gr.java_conf.kgd.example.blog.crossgenerics;

import com.badlogic.gdx.scenes.scene2d.Actor;
import com.badlogic.gdx.scenes.scene2d.ui.Widget;
import com.badlogic.gdx.scenes.scene2d.utils.Layout;

// WidgetでもWidgetGroupでもOK
public class WidgetHolder<T extends Actor & Layout> {

    private T widget;

    public WidgetHolder(T widget) {
        this.widget = widget;
    }

    public T getWidget() {
        return widget;
    }
}

// このように書いてしまうとWidgetGroupは渡せなくなってしまう。
class WidgetOnlyHolder {

    private Widget widget;

    public WidgetOnlyHolder(Widget widget) {
        this.widget = widget;
    }

    public Widget getWidget() {
        return widget;
    }
}

add クラスで扱うジェネリクスの例を追加。