Swing刪除顏色選擇器的預覽面板

以下範例展示如何在基於迴轉的應用程式中刪除/替換標準顏色選擇器的預覽面板。

使用以下API -

• JColorChooser.setPreviewPanel() - 刪除或替換預覽面板。

範例

package com.yiibai.swingdemo;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.LayoutManager;

import javax.swing.JColorChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

public class SwingTester {
    public static void main(String[] args) {
        createWindow();
    }

    private static void createWindow() {
        JFrame frame = new JFrame("Swing刪除顏色選擇器的預覽面板");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        createUI(frame);
        frame.setSize(650, 400);
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }

    private static void createUI(final JFrame frame) {
        JPanel panel = new JPanel();
        LayoutManager layout = new FlowLayout();
        panel.setLayout(layout);
        final JLabel colorLabel = new JLabel("顏色選擇器範例：");
        final JColorChooser colorChooser = new JColorChooser();

        // No preview panel
        colorChooser.setPreviewPanel(new JPanel());

        colorChooser.getSelectionModel().addChangeListener(new ChangeListener() {
            @Override
            public void stateChanged(ChangeEvent e) {
                Color color = colorChooser.getColor();
                colorLabel.setForeground(color);
            }
        });
        panel.add(colorLabel);
        panel.add(colorChooser);
        frame.getContentPane().add(panel, BorderLayout.CENTER);
    }
}

執行上面範例程式碼，得到以下結果：