jgrouppanel.java

OpenSwing的经典示例

    public void insertMember(int groupIndex, int memberIndex, Component member) {
        getGroup(groupIndex).addMember(memberIndex, member);
    }

    /**
     * 从组中移除成员组件
     * @param groupIndex int
     * @param memberIndex int
     */
    public void removeMember(int groupIndex, int memberIndex) {
        getGroup(groupIndex).removeMember(memberIndex);
    }

    /**
     * 取得成员组件
     * @param groupIndex int 组的顺序号
     * @param memberIndex int 成员组件的顺序号
     * @return Component 成员组件
     */
    public Component getMember(int groupIndex, int memberIndex) {
        return getGroup(groupIndex).getMember(memberIndex);
    }

    /**
     * 取得全部成员组件
     * @param groupIndex int 组的顺序号
     * @return Component[] 全部成员组件
     */
    public Component[] getMembers(int groupIndex) {
        return getGroup(groupIndex).getMembers();
    }

    /**
     * 取得成员组件的总数
     * @param groupIndex int 组的顺序号
     * @return int 总数
     */
    public int getMemberCount(int groupIndex) {
        return getGroup(groupIndex).getMemberCount();
    }

    /**
     * 取得组
     * @param index int 组的顺序号
     * @return JGroupContainer 组
     */
    protected JGroupContainer getGroup(int index) {
        return (JGroupContainer) groupList.get(index);
    }

    /**
     * 覆写的addImpl方法,禁止再向JGroupPane中添加组件
     * @param comp Component
     * @param constraints Object
     * @param index int
     */
    protected void addImpl(Component comp, Object constraints, int index) {
        if (forbidFlag) {
            if (! (comp instanceof JGroupContainer)) {
                throw new UnsupportedOperationException(
                    "JGroupPane can't add component!");
            }
        }
        else {
            super.addImpl(comp, constraints, index);
        }
    }

    /**
     * <p>Title: OpenSwing</p>
     * <p>Description: 组面板布局管理器</p>
     * <p>Copyright: Copyright (c) 2004</p>
     * <p>Company: </p>
     * @author <a href="mailto:[e-mail]">SunKing</a>
     * @version 1.0
     */
    class GroupLayout
        implements LayoutManager, java.io.Serializable {
        int vgap = 0;
        int hgap = 0;
        public GroupLayout() {
        }

        public GroupLayout(int hg, int vg) {
            this.hgap = hg;
            this.vgap = vg;
        }

        public void addLayoutComponent(String name, Component comp) {
        }

        public void removeLayoutComponent(Component comp) {
        }

        public Dimension preferredLayoutSize(Container parent) {
            synchronized (parent.getTreeLock()) {
                Insets insets = parent.getInsets();
                int ncomponents = parent.getComponentCount();
                int w = 0;
                int h = 0;
                for (int i = 0; i < ncomponents; i++) {
                    Component comp = parent.getComponent(i);
                    Dimension d = comp.getPreferredSize();
                    if (w < d.width) {
                        w = d.width;
                    }
                    h += d.height + vgap;
                }
                return new Dimension(insets.left + insets.right + w + 2 * hgap,
                                     insets.top + insets.bottom + h + 2 * vgap);
            }
        }

        public Dimension minimumLayoutSize(Container parent) {
            return preferredLayoutSize(parent);
        }

        public void layoutContainer(Container parent) {
            synchronized (parent.getTreeLock()) {
                Insets insets = parent.getInsets();
                int ncomponents = parent.getComponentCount();
                if (ncomponents == 0) {
                    return;
                }
                int y = insets.top + vgap;
                for (int c = 0; c < ncomponents; c++) {
                    int h = parent.getComponent(c).getPreferredSize().height;
                    parent.getComponent(c).setBounds(
                        insets.left + hgap,
                        y,
                        parent.getWidth() - insets.left - insets.right -
                        2 * hgap, h);
                    y += h + vgap;
                }
            }
        }

        public String toString() {
            return getClass().getName();
        }
    }

    /**
     * <p>Title: OpenSwing</p>
     * <p>Description: 组</p>
     * <p>Copyright: Copyright (c) 2004</p>
     * <p>Company: </p>
     * @author <a href="mailto:[e-mail]">SunKing</a>
     * @version 1.0
     */
    class JGroupContainer
        extends JPanel {
        private JButton bttGroupTitle = new JButton();
        private JPanel pMembers = new JPanel();
        private JScrollPane sp;
        public JGroupContainer() {
            this("");
        }

        public JGroupContainer(String name) {
            this(name, UIManager.getColor("Desktop.background"));
        }

        /**
         * @param name String  组名
         * @param background Color 成员组件所在面板背景色
         */
        public JGroupContainer(String name, Color background) {
            bttGroupTitle.setText(name);
            bttGroupTitle.setFocusable(false);
            pMembers.setLayout(new GroupLayout(5, 5));
            this.setLayout(new BorderLayout());
            this.add(bttGroupTitle, BorderLayout.NORTH);

            pMembers.setBackground(background);

            Color thumbColor = UIManager.getColor("ScrollBar.thumb");
            Color trackColor = UIManager.getColor("ScrollBar.track");
            Color trackHighlightColor = UIManager.getColor(
                "ScrollBar.trackHighlight");

            UIManager.put("ScrollBar.thumb", background);
            UIManager.put("ScrollBar.track", background);
            UIManager.put("ScrollBar.trackHighlight", background);
            sp = new JScrollPane(pMembers);
            sp.setHorizontalScrollBarPolicy(
                JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
            this.add(sp, BorderLayout.CENTER);
            collapse();
            UIManager.put("ScrollBar.thumb", thumbColor);
            UIManager.put("ScrollBar.track", trackColor);
            UIManager.put("ScrollBar.trackHighlight", trackHighlightColor);

        }

        /**
         * 设置间距
         * @param hgap int 横间距
         * @param vgap int 竖间距
         */
        public void setMemberGap(int hgap, int vgap) {
            pMembers.setLayout(new GroupLayout(hgap, vgap));
        }

        /**
         * 取得组的标题按钮
         * @return JButton
         */
        public JButton getTitleButton() {
            return bttGroupTitle;
        }

        /**
         * 取得组的成员组件面板
         * @return JPanel
         */
        public JPanel getMembersContainer() {
            return pMembers;
        }

        /**
         * 收缩组
         */
        public void collapse() {
            sp.setVisible(false);
            this.revalidate();
        }

        /**
         * 展开组
         */
        public void expand() {
            sp.setVisible(true);
            this.revalidate();
        }

        /**
         * 设置组名
         * @param name String 组名
         */
        public void setName(String name) {
            bttGroupTitle.setText(name);
        }

        /**
         * 取得组名
         * @return String
         */
        public String getName() {
            return bttGroupTitle.getText();
        }

        /**
         * 添加一个成员组件
         * @param index int 顺序号
         * @param c Component 成员组件
         */
        public void addMember(int index, Component c) {
            pMembers.add(c, index);
            pMembers.doLayout();
        }

        /**
         * 删除一个成员组件
         * @param index int 顺序号
         */
        public void removeMember(int index) {
            pMembers.remove(index);
            pMembers.doLayout();
        }

        /**
         * 取得一个成员组件
         * @param index int 顺序号
         * @return Component 成员组件
         */
        public Component getMember(int index) {
            return pMembers.getComponent(index);
        }

        /**
         * 取得全部成员组件
         * @return Component[] 成员组件
         */
        public Component[] getMembers() {
            Component coms[] = new Component[getMemberCount()];
            for (int i = 0; i < coms.length; i++) {
                coms[i] = pMembers.getComponent(i);
            }
            return coms;
        }

        /**
         * 取得成员组件总数
         * @return int 总数
         */
        public int getMemberCount() {
            return pMembers.getComponentCount();
        }

        /**
         * 重写的toString方法
         * @return String
         */
        public String toString() {
            return getName();
        }
    }

    /**
         /**
      * 测试程序
      * @param args String[]
      */
     public static void main(String[] args) {
//         try {
//             UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
//         }
//         catch (Exception e) {
//         }
         JFrame frame = new JFrame();
//        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         frame.setTitle("JGroupPanel Demo");
         frame.getContentPane().setLayout(new BorderLayout());
         JGroupPanel p = new JGroupPanel();
         frame.getContentPane().add(p, BorderLayout.CENTER);

         frame.setSize(150, 600);
         Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
         frame.setLocation(d.width - frame.getSize().width - 10,
                           10);
         frame.setVisible(true);
     }

}