import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Toolkit;
import java.util.ArrayList;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.UIManager;
import javax.swing.WindowConstants;
public class IsmGroupsPane extends JPanel {
private static final long serialVersionUID = -7104845618141074287L;
/* 用来管理组的三个容器 */
private JPanel pNorth = new JPanel();
private JPanel pCenter = new JPanel();
private JPanel pSouth = new JPanel();
/* 当前全部组的集合 */
private ArrayList<IsmGroupPane> groupList = new ArrayList<IsmGroupPane>();
private transient Handler handler = new Handler();
private void initComponents() {
this.setLayout(new BorderLayout());
this.add(pNorth, BorderLayout.NORTH);
this.add(pCenter, BorderLayout.CENTER);
this.add(pSouth, BorderLayout.SOUTH);
pNorth.setLayout(new GroupLayout());
pCenter.setLayout(new GroupLayout());
pSouth.setLayout(new GroupLayout());
}
public IsmGroupsPane(String groupNames[]) {
initComponents();
addGroup(groupNames);
}
/**
* 展开组
*/
public void expandGroup(String name) {
for (int i = getGroupCount() - 1; i >= 0; i--) {
if (getGroupName(i).equals(name)) {
expandGroup(i);
}
}
}
public void addGroup(int index, Component contentPane) {
getGroup(index).addContentPane(contentPane);
}
/**
* 展开组
*/
public void expandGroup(int index) {
expandGroup(getGroup(index));
}
/**
* 展开组
*/
protected void expandGroup(IsmGroupPane group) {
group.expand();
pNorth.revalidate();
pCenter.revalidate();
pSouth.revalidate();
this.revalidate();
}
/**
* 添加组
*/
public void addGroup(String name) {
this.insertGroup(getGroupCount(), name);
}
/**
* 添加多个组
*/
public void addGroup(String names[]) {
for (int i = 0; i < names.length; i++) {
addGroup(names[i]);
}
}
/**
* 插入一个组
*/
public void insertGroup(int index, String name, Color bg) {
if (index < 0 || index > groupList.size()) {
throw new ArrayIndexOutOfBoundsException("index:" + index
+ " >count:" + groupList.size());
}
int countNorth = pNorth.getComponentCount();
int countCenter = pCenter.getComponentCount();
int countSouth = pSouth.getComponentCount();
IsmGroupPane group;
if (index <= countNorth) {
group = insertGroup(pNorth, index, name, bg);
} else if (index <= countNorth + countCenter) {
group = insertGroup(pCenter, index - countNorth, name, bg);
} else if (index <= countNorth + countCenter + countSouth) {
group = insertGroup(pSouth, index - countNorth - countCenter, name,
bg);
} else {
group = insertGroup(pSouth, countSouth, name, bg);
}
group.getTitleButton().addActionListener(handler);
groupList.add(index, group);
}
/**
* 插入一个组
*/
public void insertGroup(int index, String name) {
insertGroup(index, name, UIManager.getColor("Desktop.background"));
}
/**
* 插入一个组
*/
private IsmGroupPane insertGroup(JPanel p, int index, String name, Color bg) {
IsmGroupPane group = new IsmGroupPane(name);
p.add(group);
return group;
}
/**
* 删除一个组
*/
public void removeGroup(int index) {
IsmGroupPane c = (IsmGroupPane) groupList.get(index);
c.getParent().remove(c);
c.getTitleButton().removeActionListener(handler);
}
/**
* 删除一个组
*/
public void removeGroup(String name) {
for (int i = getGroupCount() - 1; i >= 0; i--) {
if (getGroupName(i).equals(name)) {
this.removeGroup(i);
}
}
}
/**
* 设置组名
*/
public void setGroupName(int index, String name) {
this.getGroup(index).setName(name);
}
/**
* 取得组名
*/
public String getGroupName(int groupIndex) {
return getGroup(groupIndex).getName();
}
/**
* 取得全部组名
*/
public String[] getGroupNames() {
String sResult[] = new String[getGroupCount()];
for (int i = 0; i < getGroupCount(); i++) {
sResult[i] = getGroupName(i);
}
return sResult;
}
/**
* 取得当前组的总数
*/
public int getGroupCount() {
return groupList.size();
}
/**
* 取得组
*/
protected IsmGroupPane getGroup(int index) {
return groupList.get(index);
}
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());
IsmGroupsPane p = new IsmGroupsPane(new String[] { "aaaaa", "bbbbb" });
p.addGroup(0, new JLabel("aaaaaaaaaa"));
p.addGroup(1, new JLabel("bbbbb"));
p.expandGroup("aaaaa");
JScrollPane sp = new JScrollPane(p);
frame.getContentPane().add(
new JLabel("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"),
BorderLayout.NORTH);
frame.getContentPane().add(sp, BorderLayout.CENTER);
frame.setSize(150, 600);
Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
frame.setLocation(d.width - frame.getSize().width - 10, 10);
frame.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
frame.setVisible(true);
}
}
package com.gordon.groupPane;
import java.awt.BorderLayout;
import java.awt.Component;
import javax.swing.JButton;
import javax.swing.JPanel;
public class IsmGroupPane extends JPanel {
private static final long serialVersionUID = 1022271950394962755L;
private JButton groupTitleButton = new JButton();
private JPanel groupContentPane = new JPanel();
private boolean hasExpanded;
public IsmGroupPane(String name) {
groupTitleButton.setText(name);
groupTitleButton.setFocusable(false);
groupContentPane.setLayout(new BorderLayout());
this.setLayout(new BorderLayout());
this.add(groupTitleButton, BorderLayout.NORTH);
this.add(groupContentPane, BorderLayout.CENTER);
this.collapse();
}
public IsmGroupPane(String name, Component contentPane) {
this(name);
addContentPane(contentPane);
}
public void addContentPane(Component contentPane) {
groupContentPane.add(contentPane, BorderLayout.CENTER);
}
/**
* 当前组是否已经展开
*
* @return
*/
public boolean hasExpanded() {
return hasExpanded;
}
/**
* 收缩组
*/
public void collapse() {
hasExpanded = false;
groupContentPane.setVisible(false);
this.revalidate();
}
/**
* 展开组
*/
public void expand() {
hasExpanded = true;
groupContentPane.setVisible(true);
this.revalidate();
}
/**
* 取得组的标题按钮
*/
public JButton getTitleButton() {
return groupTitleButton;
}
/**
* 取得组的成员组件面板
*/
public JPanel getContentPane() {
return groupContentPane;
}
/**
* 取得组名
*/
public String getName() {
return groupTitleButton.getText();
}
/**
* 取得一个成员组件
*/
public Component getMember(int index) {
return groupContentPane.getComponent(index);
}
/**
* 取得全部成员组件
*/
public Component[] getMembers() {
Component coms[] = new Component[getMemberCount()];
for (int i = 0; i < coms.length; i++) {
coms[i] = groupContentPane.getComponent(i);
}
return coms;
}
/**
* 取得成员组件总数
*/
public int getMemberCount() {
return groupContentPane.getComponentCount();
}
/**
* 重写的toString方法
*/
public String toString() {
return getName();
}
}
/**
*
*/
package com.gordon.groupPane;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import javax.swing.JButton;
public class Handler extends MouseAdapter implements ActionListener {
public void actionPerformed(ActionEvent e) {
JButton bttTitle = (JButton) e.getSource();
IsmGroupPane group = (IsmGroupPane) bttTitle.getParent();
if (group.hasExpanded()) {
group.collapse();
} else {
group.expand();
}
}
}
package com.gordon.groupPane;
import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Insets;
import java.awt.LayoutManager;
public class GroupLayout implements LayoutManager, java.io.Serializable {
private static final long serialVersionUID = -4833058139929483074L;
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 groupPanel.getClass().getName();
// }
}
本文介绍了一种用于管理及展示小组的系统,通过多级布局实现不同小组的灵活展示与交互,支持添加、删除、重命名小组,并能展开或折叠小组内容。
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