java - 如何在 Java Swing 中对表格中选中的组合框组件进行颜色渲染？

Question

我有一个组合框，其中包含复选框，放置在表格中。每当我选择该行时，颜色渲染仅应用于表格的其余单元格。如何渲染“checkedcombobox”，以便它也可以获得与表格行中其他单元格匹配的选择颜色。

Answer 1

这里有一个例子:

import javax.swing.DefaultCellEditor;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.UIManager;
import javax.swing.WindowConstants;
import javax.swing.plaf.basic.BasicComboBoxUI;

public class TableEditorExample {

    private static final String[] COLS = {"Number", "Type", "Name"};

    private static final Object[][] DATA = {{"1", "Book", "Brave new world"}, {"2", "Music", "Smells like a teen spirit"},
            {"3", "Film", "Star Wars"}};

    public static void main(String[] args) {
        try {
            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
        } catch (Exception e) {
            // Nothing
        }
        JFrame frm = new JFrame("Test combo renderer");
        JTable tbl = new JTable(DATA, COLS);
        tbl.setRowHeight(20);
        JComboBox<String> combo = new JComboBox<>(new String[] {"Book", "Music", "Film"});
        combo.setUI(new BasicComboBoxUI());
        combo.setBackground(tbl.getSelectionBackground());
        combo.setForeground(tbl.getSelectionForeground());
        tbl.getColumnModel().getColumn(1).setCellEditor(new DefaultCellEditor(combo));
        frm.add(new JScrollPane(tbl));
        frm.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        frm.pack();
        frm.setLocationRelativeTo(null);
        frm.setVisible(true);
    }
}

所以，你需要做的是:

combo.setUI(new BasicComboBoxUI());
combo.setBackground(tbl.getSelectionBackground());
combo.setForeground(tbl.getSelectionForeground());

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