uploadpanel.java

该系统是一个基于p2p的即时聊天系统

     */
    private void reloadEntries() {
        unloadEntries();
        loadEntries();
    }
    /**
     * 卸载用户
     */
    private void unloadUsers() {
        int count = USER_ROOT.getChildCount();
        for (int i = 0; i < count; i++) {
            userSystemModel.removeNodeFromParent(
                (DefaultMutableTreeNode) USER_ROOT.getChildAt(0));
        }
    }
    /*------------------------------------------------------------------------*
     *                                 内部类                                 *
     *------------------------------------------------------------------------*/
    /**
     * 工具栏面板
     */
    class Toolbar extends JPanel {
        /**
         * Create a new instance of this class
         */
        public Toolbar() {
            super(new FlowLayout(FlowLayout.CENTER, 5, 0));
            //新建目录
            JButton button = new JButton(NewDirectoryAction.getInstance());
            button.setIcon(ImageShop.DIRECTORY_IMAGEICON);
            button.addMouseListener(new SBChanger(
                NewDirectoryAction.getInstance().getHintInfo(), false));
            add(button);
            //添加文件
            button = new JButton(AddFileAction.getInstance());
            button.setIcon(ImageShop.ADD_FILE_IMAGEICON);
            button.addMouseListener(new SBChanger(
                AddFileAction.getInstance().getHintInfo(), false));
            add(button);
            //删除文件
            button = new JButton(DeleteFileAction.getInstance());
            button.setIcon(ImageShop.DELETE_FILE_IMAGEICON);
            button.addMouseListener(new SBChanger(
                DeleteFileAction.getInstance().getHintInfo(), false));
            add(button);
            //重命名
            button = new JButton(RenameAction.getInstance());
            button.setIcon(ImageShop.RENAME_IMAGEICON);
            button.addMouseListener(new SBChanger(
                RenameAction.getInstance().getHintInfo(), false));
            add(button);
            //提取文件
            button = new JButton(ExtractFileAction.getInstance());
            button.setIcon(ImageShop.EXTRACT_IMAGEICON);
            button.addMouseListener(new SBChanger(
                ExtractFileAction.getInstance().getHintInfo(), false));
            add(button);
            //设置共享
            button = new JButton(SetShareAction.getInstance());
            button.setIcon(ImageShop.SET_SHARE_IMAGEICON);
            button.addMouseListener(new SBChanger(
                SetShareAction.getInstance().getHintInfo(), false));
            add(button);
        }
    }
    /**
     * 文件视图面板
     */
    class FileViewPanel extends JPanel implements TreeSelectionListener {
        /**
         * 文件信息文本域
         */
        private JTextArea fileInfoTextArea = new JTextArea();
        /**
         * Create a new instance of this class
         */
        public FileViewPanel() {
            super(new GridBagLayout());
            //文件视图标签
            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("文件视图"), constraints);
            //文件系统树
            fileSystemModel = new DefaultTreeModel(FILE_ROOT);
            fileSystemTree = new JTree(fileSystemModel);
            fileSystemTree.addTreeSelectionListener(this);
            loadEntries();
            setTree(fileSystemTree);
            setTreeCellRenderer();
            JScrollPane scroller1 = new JScrollPane(fileSystemTree,
                JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
                JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
            //文件信息文本域
            fileInfoTextArea.setEditable(false);
            JScrollPane scroller2 = new JScrollPane(fileInfoTextArea,
                JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
                JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
            //分割条
            JSplitPane spliter = new JSplitPane(JSplitPane.VERTICAL_SPLIT,
                false, scroller1, scroller2);
            spliter.setBorder(null);
            spliter.setDividerLocation(350);
            constraints.gridy = 1;
            constraints.weightx = 1.0;
            constraints.weighty = 1.0;
            constraints.fill = GridBagConstraints.BOTH;
            constraints.insets = new Insets(0, 0, 0, 0);
            add(spliter, constraints);
        }
        /**
         * 设置文件系统树组件的单元格渲染器
         */
        private void setTreeCellRenderer() {
            final DefaultTreeCellRenderer renderer1 =
                (DefaultTreeCellRenderer) fileSystemTree.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 == FILE_ROOT) {
                        label.setIcon(ImageShop.FILE_ROOT_IMAGEICON);
                    } else {
                        ZipEntry entry = (ZipEntry)
                            ((DefaultMutableTreeNode) value).getUserObject();
                        if (entry.isDirectory() == true) {
                            if (expanded == true) {
                                label.setIcon(ImageShop.EXPAND_IMAGEICON);
                            } else {
                                label.setIcon(ImageShop.COLLAPSE_IMAGEICON);
                            }
                        }
                        label.setText(toolkit.getShortName(entry));
                    }
                    return c;
                }
            };
            fileSystemTree.setCellRenderer(renderer2);
        }
        /**
         * 实现TreeSelectionListener接口的方法
         *
         * @param event TreeSelectionEvent对象
         */
        public void valueChanged(TreeSelectionEvent event) {
            //处理文件视图
            DefaultMutableTreeNode node = (DefaultMutableTreeNode) event
                .getPath().getLastPathComponent();
            StringBuffer buffer = new StringBuffer();
            buffer.append("名称：");
            if (node == FILE_ROOT) {
                File file = new File(XMLConfig.getUploadFile());
                buffer.append(file.getPath());
                buffer.append("\n大小：");
                buffer.append("\n压缩后大小：");
                buffer.append(file.length());
                buffer.append("\n类型：");
                buffer.append("\n修改时间：");
                buffer.append(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")
                    .format(new Date(file.lastModified())));
                ActionCenter.getInstance().setActionWhenSelectUpload();
            } else {
                ZipEntry entry = (ZipEntry) node.getUserObject();
                buffer.append(toolkit.getShortName(entry));
                if (entry.isDirectory()) {
                    buffer.append("\n大小：");
                    buffer.append("\n压缩后大小：");
                    buffer.append("\n类型：目录");
                    ActionCenter.getInstance().setActionWhenSelectDirectory();
                } else {
                    buffer.append("\n大小：");
                    buffer.append(entry.getSize());
                    buffer.append("\n压缩后大小：");
                    buffer.append(entry.getCompressedSize());
                    buffer.append("\n类型：文件");
                    String name = toolkit.getShortName(entry);
                    int index = name.lastIndexOf('.');
                    if (index != -1) {
                        name = name.substring(index + 1, name.length());
                        buffer.append(name);
                    }
                    ActionCenter.getInstance().setActionWhenSelectFile();
                }
                buffer.append("\n修改时间：");
                buffer.append(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")
                    .format(new Date(entry.getTime())));
            }
            fileInfoTextArea.setText(buffer.toString());
            //处理用户视图
            handlerUserViewPanel();
        }
    }
    /**
     * 用户视图面板
     */
    class UserViewPanel extends JPanel {
        /**
         * Create a new instance of this class
         */
        public UserViewPanel() {
            super(new GridBagLayout());
            //用户视图标签
            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("好友视图"), constraints);
            //用户系统树
            userSystemModel = new DefaultTreeModel(USER_ROOT);
            userSystemTree = new JTree(userSystemModel);
            setTreeCellRenderer();
            setTree(userSystemTree);
            JScrollPane scroller1 = new JScrollPane(userSystemTree,
                JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
                JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
            //用户信息文本域
            userInfoTextArea = new JTextArea();
            userInfoTextArea.setEditable(false);
            JScrollPane scroller2 = new JScrollPane(userInfoTextArea,
                JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
                JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
            //分割条
            JSplitPane spliter = new JSplitPane(JSplitPane.VERTICAL_SPLIT,
                false, scroller1, scroller2);
            spliter.setBorder(null);
            spliter.setDividerLocation(350);
            constraints.gridy = 1;
            constraints.weightx = 1.0;
            constraints.weighty = 1.0;
            constraints.fill = GridBagConstraints.BOTH;
            constraints.insets = new Insets(0, 0, 0, 0);
            add(spliter, constraints);
        }
        /**
         * 设置文件系统树组件的单元格渲染器
         */
        private void setTreeCellRenderer() {
            final DefaultTreeCellRenderer renderer1 =
                (DefaultTreeCellRenderer) userSystemTree.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 == USER_ROOT) {
                        label.setIcon(ImageShop.USER_ROOT_IMAGEICON);
                    } else {
                        label.setIcon(ImageShop.USER_IMAGEICON);
                    }
                    return c;
                }
            };
            userSystemTree.setCellRenderer(renderer2);
        }
    }
}