import java.awt.*;
import java.util.*;
import java.net.*;
import java.io.*;
import java.applet.Applet;

public class Users_5 extends Applet {
	userClient	c;

	public void init() {
		c = new userClient();
		c.show();
	}
}

class userClient extends Frame {
	Panel 			main_panel, status_panel, summ_panel;
	GridBagPanel	full_panel;
	CardLayout		cardMgr;
	Label			stat_label;
	Clock			clk_ticker; 
	Hashtable		db; 	
	List			summ_list;
	int				currentItem;	

	userClient() {
		int REMN = GridBagConstraints.REMAINDER; 
		db = new Hashtable(20); 

		resize(500, 300);
		setLayout(new BorderLayout());			// FOR THE BIG WINDOW

		add("North", main_panel   = new Panel());
		add("South", status_panel = new Panel());

		main_panel.setLayout(cardMgr = new CardLayout());
		status_panel.setLayout(new BorderLayout());

		main_panel.add("Full", 		full_panel = new GridBagPanel());
		main_panel.add("Summary",	summ_panel = new Panel());

		status_panel.add("West",	stat_label = new Label("Application Started"));
		status_panel.add("East",	clk_ticker = new Clock());

					//	WGT	WIDTH
		full_panel.add_textfield("Name",  	1, 	REMN);
		full_panel.add_textfield("Title", 	1, 	REMN);
		full_panel.add_textfield("Email", 	1, 	REMN);
		full_panel.add_textfield("Company",	1, 	REMN);
		full_panel.add_textfield("Dept",  	1, 	2);
		full_panel.add_textfield("MailStop",1, 	REMN);
		full_panel.add_textfield("City", 	1, 	4);
		full_panel.add_textfield("State", 	1, 	1);
		full_panel.add_textfield("Zip", 	1, 	REMN); 

		summ_panel.setLayout(new BorderLayout());
		summ_list = new List(10, false);
		summ_panel.add("Center", summ_list);	

		userMenu menu = new userMenu(this);
		setMenuBar(menu);
		setTitle("My first client");
	}

	void Connect() 	{ }
	void Exit() 	{ }

	void Edit() {
		TextField	text;

		printStatus("Editing record");

		Enumeration elems = full_panel.fieldlist.elements();
		while (elems.hasMoreElements()) {
			text = (TextField) elems.nextElement();
			text.setEditable(true);
		}
	}	

	void Add() {
		TextField	text;
		String		name;
		int			a;
		boolean		found_match;

		printStatus("Saving changes");
		UserRecord rec = new UserRecord(full_panel.fieldlist);

		text = (TextField) full_panel.fieldlist.get("Name");
		name = (String) text.getText();
		db.put(name, rec);

		Enumeration elems = full_panel.fieldlist.elements();
		while (elems.hasMoreElements()) {
			text = (TextField) elems.nextElement();
			text.setEditable(false);
		}
		for (a = 0, found_match = false; a < summ_list.countItems(); a++) {
			String item = summ_list.getItem(a);
			if (item.equals(name)) {
				found_match = true;
				break;
			}
		}
		if (found_match == false)
			summ_list.addItem(name);

		currentItem = a;
		summ_list.select(currentItem);
	}

	void Delete() {
		String name = summ_list.getSelectedItem();
		if (name == null)
			return;
		summ_list.delItem(currentItem);
		db.remove(name);

		if (currentItem > summ_list.countItems()) {
			currentItem--;
			summ_list.select(currentItem);
		}
		name = summ_list.getItem(currentItem);
		UserRecord newrec = (UserRecord) db.get(name); /*<FONT color=blue>*/
		full_panel.display_data(newrec); /*</FONT>*/
		printStatus("Deleted");
	}

	void Full() {
		String name 	= (String) summ_list.getItem(currentItem);
		UserRecord rec	= (UserRecord) db.get(name);/*<FONT color=blue>*/
		full_panel.display_data(rec); /*</FONT>*/
		cardMgr.show(main_panel, "Full");
	}

	void Summary() {
		cardMgr.show(main_panel, "Summary");
	} 

	void printStatus(String str) {
		stat_label.setText(str);
	}	

	public boolean handleEvent(Event evt) {
		if (evt.id == Event.ACTION_EVENT)
			action(evt, evt.target);
		else if (evt.id == Event.LIST_SELECT) {
			Integer Int	= (Integer) evt.arg;
			currentItem = Int.intValue();
		}
		return false;
	}	

	public boolean action(Event evt, Object target) {
		String item = evt.arg.toString();

		if 		(item.equals("Connect"))	Connect();
		else if (item.equals("Exit"))		Exit();
		else if (item.equals("Edit"))		Edit();
		else if (item.equals("Add"))		Add();
		else if (item.equals("Delete"))		Delete();
		else if (item.equals("Full"))		Full();
		else if (item.equals("Summary"))	Summary();
		else 								return false;

		return true;
	}
}

class GridBagPanel extends Panel {
	GridBagLayout		gridbag;
	GridBagConstraints	c;
	Hashtable			fieldlist;

	GridBagPanel() {
		gridbag		= new GridBagLayout();
		c 			= new GridBagConstraints();
		c.fill		= GridBagConstraints.BOTH;
		fieldlist	= new Hashtable(10);
		setLayout(gridbag);
	}
	
	void add_textfield(String text, int weight, int width) {
		c.weightx	= 0;
		c.weighty 	= 0;
		c.gridwidth	= 1;
		c.gridheight= 1;
		
		Label label = new Label(text);
		gridbag.setConstraints(label, c);
		add(label);

		c.weightx	= weight;
		c.weighty 	= 0;
		c.gridwidth	= width;
		c.gridheight= 1;

		TextField tfield = new TextField();
		tfield.setEditable(false);
		gridbag.setConstraints(tfield, c);
		add(tfield);

		fieldlist.put(text, tfield);
	}	/*<FONT color=blue>*/

	void display_data(UserRecord rec) {
		String		rec_key, rec_elem;
		TextField	disp_elem;
		Enumeration 	rec_step;

		rec_step = rec.hash.keys();

		while (rec_step.hasMoreElements()) {
			rec_key		= (String) rec_step.nextElement();
			rec_elem	= (String) rec.hash.get(rec_key);
			disp_elem	= (TextField) fieldlist.get(rec_key);

			if (disp_elem != null)
				disp_elem.setText(rec_elem);
		}
	}	
} /*</FONT>*/
		
class userMenu extends MenuBar {
	userClient	u;

	userMenu(userClient u) {
		this.u		= u;
		Menu file	= new Menu("File");
		Menu edit	= new Menu("Edit");
		Menu view	= new Menu("View", true);
		Menu casc	= new Menu("Cascade");

		file.add(new MenuItem("Connect"));
		file.add(new MenuItem("Exit"));
		edit.add(new MenuItem("Edit"));
		edit.add(new MenuItem("Add"));
		edit.add(new MenuItem("Delete"));
		view.add(new MenuItem("Full"));
		view.add(new MenuItem("Summary"));
		view.add(casc);
		casc.add(new MenuItem("Cascade-1"));
		casc.add(new MenuItem("Cascade-2"));
		casc.add(new MenuItem("Cascade-3"));

		add(file);
		add(edit);
		add(view);
	}
}

class Clock extends Label implements Runnable {
	Thread tick;

	Clock() {
		super(new Date().toString(), Label.RIGHT);
		tick = new Thread(this);
		tick.start();
	}

	public void run() {
		while (true) {
			try {
				Thread.sleep(1000);
				setText(new Date().toString());
			} catch (InterruptedException e) {
				tick.destroy();
				return;
			}
		}
	}
}

class UserRecord {
	Hashtable hash = new Hashtable(10);

	UserRecord() {
	}

	UserRecord(Hashtable src) {
		Enumeration	elem, key;
		String		fieldLabel, fieldValue;
		TextField	fieldTextF;

		elem = src.elements();
		key  = src.keys();

		while (key.hasMoreElements()) {
			fieldLabel = (String)    key.nextElement();
			fieldTextF = (TextField) elem.nextElement();
			fieldValue = fieldTextF.getText();

			hash.put(fieldLabel, fieldValue);
		}
	}
}