用swing搭建QQ简单界面

//package psn.nicholas.swing; import java.awt.BorderLayout; import java.awt.Component; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.ArrayList; import javax.swing.JButton; import javax.swing.JPanel; public class JGroupPanel extends JPanel { /** * */ private static final long serialVersionUID = 1L; private JPanel northPanel; private JPanel centerPanel; private JPanel southPanel; private ArrayList groupList = new ArrayList(); private boolean forbidFlag = false; private boolean hasCreateDefaultGroup = false; private MemberGroup activeGroup = null; private GroupHandler al; public JGroupPanel() { super(new BorderLayout()); al = new GroupHandler(); northPanel = new JPanel(new GridLayout(0,1,0,0)); centerPanel = new JPanel(new BorderLayout()); southPanel = new JPanel(new GridLayout(0,1,0,0)); add(northPanel, BorderLayout.NORTH); add(centerPanel, BorderLayout.CENTER); add(southPanel, BorderLayout.SOUTH); // createDefaultGroup(); } /* private void createDefaultGroup() { forbidFlag = true; for(int i=0;i<3;i++) { addGroup("Group"+i, i); for(int j=0;j<5;j++) { MemberCell cell = new MemberCell(j,"Member"+i+j); addMember(i,cell); } } expandGroup(0); hasCreateDefaultGroup = true; } */ //... protected void addImpl(Component comp, Object constraints, int index) { if (forbidFlag) { if (! (comp instanceof MemberGroup)) { throw new UnsupportedOperationException( "JGroupPane can't add component!"); } } else { super.addImpl(comp, constraints, index); } } //add group public void addGroup(String name) { this.addGroup(name, getGroupCount()); } public void addGroup(String names[]) { for (int i = 0; i < names.length; i++) { addGroup(names[i]); } } //key method public void addGroup(String name, int index) { if (index < 0 || index > groupList.size()) { throw new ArrayIndexOutOfBoundsException("index:" + index + " >count:" + groupList.size()); } if(hasCreateDefaultGroup){ while(getGroupCount()>0){ removeGroup(0); } hasCreateDefaultGroup = false; } int countNorth = northPanel.getComponentCount(); int countCenter = centerPanel.getComponentCount(); int countSouth = southPanel.getComponentCount(); MemberGroup group; if (index <= countNorth) { group = insertGroup(northPanel, name); } else if (index <= countNorth + countCenter) { group = insertGroup(centerPanel, name); } else if (index <= countNorth + countCenter + countSouth) { group = insertGroup(southPanel, name); } else { group = insertGroup(southPanel, name); } group.getTitleButton().addActionListener(al); groupList.add(index, group); } private MemberGroup insertGroup(JPanel p, String name) { MemberGroup group = new MemberGroup(name); p.add(group); return group; } //remove public void removeGroup(String name) { for (int i = getGroupCount() - 1; i >= 0; i--) { if (getGroupName(i).equals(name)) { this.removeGroup(i); } } } public void removeGroup(int index) { MemberGroup c = (MemberGroup) groupList.get(index); c.getParent().remove(c); c.getTitleButton().removeActionListener(al); } //expand public void expandGroup(String name) { for (int i = getGroupCount() - 1; i >= 0; i--) { if (getGroupName(i).equals(name)) { expandGroup(i); } } } public void expandGroup(int index) { expandGroup(getGroup(index)); } //key method private void expandGroup(MemberGroup group) { northPanel.removeAll(); centerPanel.removeAll(); southPanel.removeAll(); boolean hasAddCenter = false; for (int i = 0; i < groupList.size(); i++) { Component c = (Component) groupList.get(i); if (hasAddCenter) { southPanel.add(c); } else if (c == group) { centerPanel.add(c, BorderLayout.CENTER); hasAddCenter = true; } else { northPanel.add(c); } } if (activeGroup != null) { activeGroup.collapse(); } activeGroup = group; activeGroup.expand(); northPanel.doLayout(); centerPanel.doLayout(); southPanel.doLayout(); doLayout(); } //collapse public void collapseGroup(String name) { for (int i = getGroupCount() - 1; i >= 0; i--) { if (getGroupName(i).equals(name)) { collapseGroup(i); } } } public void collapseGroup(int index) { collapseGroup(getGroup(index)); } //key method private void collapseGroup(MemberGroup group) { if (group == activeGroup) { activeGroup.collapse(); activeGroup = null; } } //set name public void setGroupName(int index, String name) { this.getGroup(index).setName(name); } //get name public String getGroupName(int groupIndex) { return getGroup(groupIndex).getName(); } public String[] getGroupNames() { String sResult[] = new String[getGroupCount()]; for (int i = 0; i < getGroupCount(); i++) { sResult[i] = getGroupName(i); } return sResult; } //get count public int getGroupCount() { return groupList.size(); } //member group //add public void addMember(int groupIndex, Component member) { getGroup(groupIndex).addMember(member,getGroup(groupIndex).getMemberCount()); } public void addMember(int groupIndex, int memberIndex, Component member) { getGroup(groupIndex).addMember(member, memberIndex); } //remove public void removeMember(int groupIndex, int memberIndex) { getGroup(groupIndex).removeMember(memberIndex); } //get public Component getMember(int groupIndex, int memberIndex) { return getGroup(groupIndex).getMember(memberIndex); } public Component[] getMembers(int groupIndex) { return getGroup(groupIndex).getMembers(); } //get count public int getMemberCount(int groupIndex) { return getGroup(groupIndex).getMemberCount(); } //get group protected MemberGroup getGroup(int index) { return (MemberGroup) groupList.get(index); } private class GroupHandler implements ActionListener { public GroupHandler() {} public void actionPerformed(ActionEvent ae) { JButton button = (JButton)ae.getSource(); expandGroup((MemberGroup)button.getParent()); } } }