/* * @(#) FriendPanel.java * Copyright 2004 HWStudio. All rights reserved. */package hws.item.smart.panel.function.admin;//導入核心Java類庫import java.awt.Insets;import java.awt.Component;import java.awt.FlowLayout;import java.awt.GridBagLayout;import java.awt.GridBagConstraints;import java.util.List;import javax.swing.JTree;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.JButton;import javax.swing.JSplitPane;import javax.swing.JScrollPane;import javax.swing.tree.DefaultTreeModel;import javax.swing.tree.DefaultMutableTreeNode;import javax.swing.tree.DefaultTreeCellRenderer;import javax.swing.tree.DefaultTreeSelectionModel;import javax.swing.event.TreeSelectionEvent;import javax.swing.event.TreeSelectionListener;//導入自定義Java類庫import hws.item.smart.misc.ImageShop;import hws.item.smart.misc.SBChanger;import hws.item.smart.panel.function.admin.misc.UserInfoPanel;import hws.item.smart.action.admin.friend.StopFriendAction;import hws.item.smart.action.admin.friend.StartFriendAction;import hws.item.smart.action.admin.friend.RestartFriendAction;import hws.item.smart.utility.chat.UserInfo;import hws.item.smart.utility.admin.XMLAccessor;import hws.item.smart.utility.admin.FriendService;/** * 好友服務面板 * * @version 0.1 2005-08-22 * @author Hwerz */public class FriendPanel extends JPanel {    /*------------------------------------------------------------------------*     *                                屬性定義                                *     *------------------------------------------------------------------------*/    /**     * 好友樹根節點     */    private static final DefaultMutableTreeNode FRIEND_ROOT =        new DefaultMutableTreeNode("用戶好友");    /**     * 該類自身的一個靜態引用     */    private static FriendPanel panel;    /**     * 好友視圖面板     */    private FriendViewPanel friendViewPanel;    /**     * 用戶信息面板     */    private UserInfoPanel userInfoPanel;    /*------------------------------------------------------------------------*     *                                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 FriendPanel() {        super(new GridBagLayout());        //啟動好友服務        FriendService.getInstance().start();        //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);        //分割條面板        userInfoPanel = new UserInfoPanel();        friendViewPanel = new FriendViewPanel();        JSplitPane spliter = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, false,            friendViewPanel, userInfoPanel);        spliter.setOneTouchExpandable(true);        spliter.setDividerLocation(200);        constraints.gridy = 1;        constraints.weighty = 1.0;        constraints.fill = GridBagConstraints.BOTH;        constraints.insets = new Insets(5, 5, 5, 5);        add(spliter, 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 FriendPanel getInstance() {        if (panel == null) {            panel = new FriendPanel();        }        return panel;    }    /**     * 刷新     */    public void refresh() {        friendViewPanel.reloadFriends();    }    /*------------------------------------------------------------------------*     *                                 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));            //啟動服務            JButton button = new JButton(StartFriendAction.getInstance());            button.setIcon(ImageShop.START_IMAGEICON);            button.addMouseListener(new SBChanger(                StartFriendAction.getInstance().getHintInfo(), false));            add(button);            //停止服務            button = new JButton(StopFriendAction.getInstance());            button.setIcon(ImageShop.STOP_IMAGEICON);            button.addMouseListener(new SBChanger(                StopFriendAction.getInstance().getHintInfo(), false));            add(button);            //重啟服務            button = new JButton(RestartFriendAction.getInstance());            button.setIcon(ImageShop.RESTART_IMAGEICON);            button.addMouseListener(new SBChanger(                RestartFriendAction.getInstance().getHintInfo(), false));            add(button);        }    }    /**     * 好友視圖面板     */    class FriendViewPanel extends JPanel implements TreeSelectionListener {        /**         * 好友樹的視圖         */        private JTree friendTree;        /**         * 好友樹的模型         */        private DefaultTreeModel friendModel;        /**         * Create a new instance of this class         */        public FriendViewPanel() {            super(new GridBagLayout());            //好友視圖標簽            GridBagConstraints constraints = new GridBagConstraints(                //gridx, gridy                0, 0,                //gridwidth, gridheight                1, 1,                //weightx, weighty                0.0, 0.0,                //anchor                GridBagConstraints.NORTHWEST,                //fill                GridBagConstraints.NONE,                //insets                new Insets(0, 5, 0, 0),                //ipadx, ipady                0, 0);            add(new JLabel("好友視圖"), constraints);            //樹型組件            friendModel = new DefaultTreeModel(FRIEND_ROOT);            friendTree = new JTree(friendModel);            friendTree.addTreeSelectionListener(this);            loadFriends();            setTree();            setTreeCellRenderer();            JScrollPane scroller = new JScrollPane(friendTree,                JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,                JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);            constraints.gridy = 1;            constraints.weightx = 1.0;            constraints.weighty = 1.0;            constraints.fill = GridBagConstraints.BOTH;            constraints.insets = new Insets(0, 0, 0, 0);            add(scroller, constraints);        }        /**         * 重載好友         */        public void reloadFriends() {            unloadFriends();            loadFriends();        }        /**         * 裝載好友         */        private void loadFriends() {            List users = XMLAccessor.getAllUsers();            for (int i = 0; i < users.size(); i++) {                UserInfo info = (UserInfo) users.get(i);                DefaultMutableTreeNode child = new DefaultMutableTreeNode(info);                List friends = info.getFriendsInfo().getAllFriends();                for (int j = 0; j < friends.size(); j++) {                    String id = String.valueOf(friends.get(j));                    DefaultMutableTreeNode child2 =                        new DefaultMutableTreeNode(XMLAccessor.getUser(id));                    child.add(child2);                }                friendModel.insertNodeInto(child, FRIEND_ROOT, i);            }            friendTree.expandRow(0);            friendTree.setSelectionRow(0);        }        /**         * 卸載好友         */        private void unloadFriends() {            int count = FRIEND_ROOT.getChildCount();            for (int i = 0; i < count; i++) {                friendModel.removeNodeFromParent(                    (DefaultMutableTreeNode) FRIEND_ROOT.getChildAt(0));            }        }        /**         * 設置樹型組件的附加選項         */        private void setTree() {            DefaultTreeSelectionModel model = new DefaultTreeSelectionModel();            model.setSelectionMode(model.SINGLE_TREE_SELECTION);            friendTree.setSelectionModel(model);            friendTree.setSelectionRow(0);            friendTree.expandRow(0);        }        /**         * 設置樹型組件的單元格渲染器         */        private void setTreeCellRenderer() {            final DefaultTreeCellRenderer renderer1 =                (DefaultTreeCellRenderer) friendTree.getCellRenderer();            DefaultTreeCellRenderer renderer2 = new DefaultTreeCellRenderer() {                public Component getTreeCellRendererComponent(JTree tree,                    Object value, boolean selected, boolean expanded,                    boolean leaf, int row, boolean hasFocus) {                    Component c = renderer1.getTreeCellRendererComponent(tree,                        value, selected, expanded, leaf, row, hasFocus);                    JLabel label = (JLabel) c;                    if (value == FRIEND_ROOT) {                        label.setIcon(ImageShop.USER_ROOT_IMAGEICON);                    } else {                        label.setIcon(ImageShop.USER_IMAGEICON);                    }                    return c;                }            };            friendTree.setCellRenderer(renderer2);        }        /**         * 實現TreeSelectionListener接口的方法         *         * @param event TreeSelectionEvent對象         */        public void valueChanged(TreeSelectionEvent event) {            DefaultMutableTreeNode node = (DefaultMutableTreeNode) event                .getPath().getLastPathComponent();            if (node == FRIEND_ROOT) {                userInfoPanel.setValue(null);            } else {                UserInfo info = (UserInfo) node.getUserObject();                userInfoPanel.setValue(info);            }        }    }}