/* * @(#) SpamboxPanel.java * Copyright 2004 HWStudio. All rights reserved. */package hws.item.smart.panel.function.mail;//導入核心Java類庫import java.awt.Insets;import java.awt.FlowLayout;import java.awt.GridBagLayout;import java.awt.GridBagConstraints;import javax.swing.JPanel;import javax.swing.JButton;//導入自定義Java類庫import hws.item.smart.misc.ImageShop;import hws.item.smart.misc.SBChanger;import hws.item.smart.action.mail.spambox.DeleteMailAction;/** * 垃圾箱面板 * * @version 0.1 2005-09-01 * @author Hwerz */public class SpamboxPanel extends JPanel {    /*------------------------------------------------------------------------*     *                                屬性定義                                *     *------------------------------------------------------------------------*/    /**     * 該類自身的一個靜態引用     */    private static SpamboxPanel panel;    /*------------------------------------------------------------------------*     *                                構造函數                                *     *------------------------------------------------------------------------*/    /**     * 構造函數為私有，這樣在整個運行過程中該類就只能有一個實例     */    private SpamboxPanel() {        super(new GridBagLayout());        //工具欄面板        GridBagConstraints constraints = new GridBagConstraints(            //gridx, gridy            0, 0,            //gridwidth, gridheight            1, 1,            //weightx, weighty            1.0, 0.0,            //anchor            GridBagConstraints.NORTH,            //fill            GridBagConstraints.HORIZONTAL,            //insets            new Insets(5, 0, 0, 0),            //ipadx, ipady            0, 0);        add(new Toolbar(), constraints);    }    /*------------------------------------------------------------------------*     *                                公共方法                                *     *------------------------------------------------------------------------*/    /**     * 對該類提供的一個全局訪問點，用來實例化該對象     *     * @return 該類唯一的一個實例     */    public static SpamboxPanel getInstance() {        if (panel == null) {            panel = new SpamboxPanel();        }        return panel;    }    /*------------------------------------------------------------------------*     *                                 內部類                                 *     *------------------------------------------------------------------------*/    /**     * 工具欄面板     */    class Toolbar extends JPanel {        /**         * Create a new instance of this class         */        public Toolbar() {            super(new FlowLayout(FlowLayout.CENTER, 5, 0));            //刪除            JButton button = new JButton(DeleteMailAction.getInstance());            button.setIcon(ImageShop.DELETE_IMAGEICON);            button.addMouseListener(new SBChanger(                DeleteMailAction.getInstance().getHintInfo(), false));            add(button);        }    }}