TWScrollPane.java

/*
 * The MIT License
 *
 * Copyright 2014 noko
 *
 * 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 net.nokok.twitduke.core.view.basics;

import java.awt.Color;
import java.awt.Component;
import javax.swing.JScrollBar;
import javax.swing.JScrollPane;
import javax.swing.SwingUtilities;

/**
 * TwitDuke用のカスタマイズ済みJScrollPaneです
 *
 */
@Deprecated
public class TWScrollPane extends JScrollPane {

    private static final long serialVersionUID = 810836152316094978L;

    /**
     * パネルの背景色です
     */
    public static final Color BACKGROUND_COLOR = new Color(40, 40, 40);

    /**
     * 指定されたパネルに空のカスタマイズ済みのスクロールパネルを生成します。
     *
     * @param view スクロールパネルを設定するパネル
     */
    public TWScrollPane(Component view) {
        super(view);
        setHorizontalScrollBarPolicy(HORIZONTAL_SCROLLBAR_NEVER);
        setVerticalScrollBarPolicy(VERTICAL_SCROLLBAR_AS_NEEDED);
        setBackground(BACKGROUND_COLOR);
    }

    /**
     * @return スクロールバーが最上部にある場合true
     */
    public boolean isScrollbarTop() {
        return this.getVerticalScrollBar().getValue() == 0;
    }

    /**
     * 指定した値だけスクロールバーを移動します
     *
     * @param value
     */
    public void shiftScrollBar(int value) {
        SwingUtilities.invokeLater(() -> {
            JScrollBar scrollBar = getVerticalScrollBar();
            int current = scrollBar.getValue();
            scrollBar.setValue(current + value);
        });
    }

}