UserButtonsPanel.java

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.border.Border;
import javax.swing.tree.DefaultMutableTreeNode;

public class UserButtonsPanel implements GUI {
	private static UserButtonsPanel panel; 
	
 private JTextArea userID;
 private JTextArea userGroup;
 private JButton addUser;
 private JButton addGroup;
 private JButton userView;
 
 private JPanel userPanel;
 
 //singleton so only one user button panel is avaliable 
 public static UserButtonsPanel panel() {
 	if (panel == null) {
 		panel = new UserButtonsPanel();
 	}
 	
 	return panel;
 }

 public UserButtonsPanel() {
 	
 }

 //initialize 
 public void initialize() {	
 this.userID = new JTextArea();
 this.addUser = new JButton("Add User");
 this.userGroup = new JTextArea();
 this.addGroup = new JButton("Add Group");
 this.userView = new JButton("Show User View");
 
 this.userPanel = new JPanel();
 
 formatPanel();
 }
 
 //formats all the buttons and text areas neatly 
 public void formatPanel() {
 Border userBorder = BorderFactory.createTitledBorder(BorderFactory.createLineBorder(Color.GREEN), "User");
 userPanel.setBorder(userBorder);
 
 userPanel.setLayout(new GridLayout(3, 2));
 userPanel.add(new JScrollPane(userID));
 userPanel.add(addUser);
 userPanel.add(new JScrollPane(userGroup));
 userPanel.add(addGroup);
 userPanel.add(userView, BorderLayout.CENTER);
 
 setUpButtonActions();

 }
 
 //retrieve user id
 public JTextArea getUserID() {
 return userID;
 }

 //retrieve add user button
 public JButton getAddUserButton() {
 return addUser;
 }

 //retrieve user group 
 public JTextArea getUserGroup() {
 return userGroup;
 }

 //retrieve add group button
 public JButton getAddGroupButton() {
 return addGroup;
 }

 //retrieve get user view button
 public JButton getUserViewButton() {
 return userView;
 }
 
 //shows message for when a message pop up is needed 
 public void showMessage(String message) {
 AdminControlPanel.getFrame().showMessage(message);
 }
 
 //gets the node that is selected so that a user or group may be added under it 
 public DefaultMutableTreeNode getSelectedNode() {
 	return TreePanel.panel().getSelectedNode();
 	
 }

 //sets up all the button actions 
 public void setUpButtonActions() {
 getAddUserButton().addActionListener(new ActionListener() {
 public void actionPerformed(ActionEvent e) {
 String userID = getUserID().getText();
 DefaultMutableTreeNode selectedNode = getSelectedNode();

 if (selectedNode != null) {
 	User user = new User();
 Admin.getAdmin().createUser(userID, user, selectedNode);
 getUserID().setText("");
 
 } else {
 showMessage("Please select a parent node.");
 }
 }
 });

 getAddGroupButton().addActionListener(new ActionListener() {
 public void actionPerformed(ActionEvent e) {
 String groupName = getUserGroup().getText();
 DefaultMutableTreeNode selectedNode = getSelectedNode();

 if (selectedNode != null) {
 Admin.getAdmin().createUserGroup(groupName, selectedNode);
 getUserGroup().setText("");
 } else {
 showMessage("Please select a parent node.");
 }
 }
 });
 
 getUserViewButton().addActionListener(new ActionListener() {
 public void actionPerformed(ActionEvent e) {
 DefaultMutableTreeNode selectedNode = getSelectedNode();

 if (selectedNode != null) {
 String nodeName = selectedNode.getUserObject().toString();
 if (Admin.getAdmin().getUsers().containsKey(nodeName)) {
 	Admin.getAdmin().getUsers().get(nodeName).openUser(nodeName, Admin.getAdmin().getUsers().get(nodeName));
 }
 else {
 	User user = new User();
 	user.openUser(nodeName, user);
 }
 
 } else {
 showMessage("Please select a node.");
 }
 }
 });
 
 }
 
 //renders the panel 
 public JPanel render() {
 	initialize();
 	return userPanel;
 }
 
}