bookcellrenderer.java

来自「java swing 开发代码」· Java 代码 · 共 37 行

// BookCellRenderer.java
// A custom cell renderer for BookEntry objects.
//
package	jswing.ch07;

import javax.swing.*;
import java.awt.*;

public class BookCellRenderer extends JLabel implements ListCellRenderer {
    private static final Color HIGHLIGHT_COLOR = new Color(0, 0, 128);

    public BookCellRenderer() {
        setOpaque(true);
        setIconTextGap(12);
    }

    public Component getListCellRendererComponent(
        JList list,
        Object value,
        int index,
        boolean isSelected,
        boolean cellHasFocus)
    {
        BookEntry entry = (BookEntry)value;
        setText(entry.getTitle());
        setIcon(entry.getImage());
        if(isSelected) {
            setBackground(HIGHLIGHT_COLOR);
            setForeground(Color.white);
        } else {
            setBackground(Color.white);
            setForeground(Color.black);
        }
        return this;
    }
}