stockpanel.java

基于zeus的水果市场源码 通过zeus设计生成agent

/*****************************************************************************
l	StockPanel.java
l	How to link agent with extra resources
* *****************************************************************************/

import java.util.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import javax.swing.*;
import javax.swing.border.*;

import zeus.util.*;
import zeus.concepts.*;
import zeus.actors.*;
import zeus.actors.event.*;
import zeus.concepts.fn.*;

public class StockPanel extends JPanel implements FactMonitor, ActionListener
{
	protected JLabel appleLabel = new JLabel();
	protected JLabel orangeLabel = new JLabel();
	protected JLabel pearLabel = new JLabel();
	protected JLabel bananaLabel = new JLabel();
	protected JLabel melonLabel = new JLabel();

	protected JButton moreApplesBtn;
	protected JButton moreOrangesBtn;
	protected JButton morePearsBtn;
	protected JButton moreBananasBtn;
	protected JButton moreMelonsBtn;
	protected JLabel cashLabel;
	protected TraderFrontEnd UI;


	public StockPanel(TraderFrontEnd frontend)
	{
		UI = frontend;

		GridBagLayout gb = new GridBagLayout();
		GridBagConstraints gbc = new GridBagConstraints();
		setLayout(gb);
		setBackground(Color.lightGray);
		setBorder(BorderFactory.createBevelBorder(BevelBorder.LOWERED));

		moreApplesBtn = new JButton("Supply");
		moreApplesBtn.addActionListener(this);

		gbc.insets = new Insets(4, 8, 4, 0);
		gbc.gridwidth = 1;
		gbc.fill = GridBagConstraints.NONE;
		gbc.anchor = GridBagConstraints.WEST;
		gb.setConstraints(appleLabel, gbc);
		add(appleLabel);

		gbc.gridwidth = GridBagConstraints.REMAINDER;
		gbc.fill = GridBagConstraints.NONE;
		gbc.anchor = GridBagConstraints.EAST;
		gbc.insets = new Insets(4, 16, 4, 8);
		gb.setConstraints(moreApplesBtn, gbc);
		add(moreApplesBtn);

		moreOrangesBtn = new JButton("Supply");
		moreOrangesBtn.addActionListener(this);

		gbc.insets = new Insets(4, 8, 4, 0);
		gbc.gridwidth = 1;
		gbc.fill = GridBagConstraints.NONE;
		gbc.anchor = GridBagConstraints.WEST;
		gb.setConstraints(orangeLabel, gbc);
		add(orangeLabel);

		gbc.gridwidth = GridBagConstraints.REMAINDER;
		gbc.fill = GridBagConstraints.NONE;
		gbc.anchor = GridBagConstraints.EAST;
		gbc.insets = new Insets(4, 16, 4, 8);
		gb.setConstraints(moreOrangesBtn, gbc);
		add(moreOrangesBtn);

		morePearsBtn = new JButton("Supply");
		morePearsBtn.addActionListener(this);

		gbc.insets = new Insets(4, 8, 4, 0);
		gbc.gridwidth = 1;
		gbc.fill = GridBagConstraints.NONE;
		gbc.anchor = GridBagConstraints.WEST;
		gb.setConstraints(pearLabel, gbc);
		add(pearLabel);

		gbc.gridwidth = GridBagConstraints.REMAINDER;
		gbc.fill = GridBagConstraints.NONE;
		gbc.anchor = GridBagConstraints.EAST;
		gbc.insets = new Insets(4, 16, 4, 8);
		gb.setConstraints(morePearsBtn, gbc);
		add(morePearsBtn);

		moreBananasBtn = new JButton("Supply");
		moreBananasBtn.addActionListener(this);

		gbc.insets = new Insets(4, 8, 4, 0);
		gbc.gridwidth = 1;
		gbc.fill = GridBagConstraints.NONE;
		gbc.anchor = GridBagConstraints.WEST;
		gb.setConstraints(bananaLabel, gbc);
		add(bananaLabel);

		gbc.gridwidth = GridBagConstraints.REMAINDER;
		gbc.fill = GridBagConstraints.NONE;
		gbc.anchor = GridBagConstraints.EAST;
		gbc.insets = new Insets(4, 16, 4, 8);
		gb.setConstraints(moreBananasBtn, gbc);
		add(moreBananasBtn);

		moreMelonsBtn = new JButton("Supply");
		moreMelonsBtn.addActionListener(this);

		gbc.insets = new Insets(4, 8, 4, 0);
		gbc.gridwidth = 1;
		gbc.fill = GridBagConstraints.NONE;
		gbc.anchor = GridBagConstraints.WEST;
		gb.setConstraints(melonLabel, gbc);
		add(melonLabel);

		gbc.gridwidth = GridBagConstraints.REMAINDER;
		gbc.fill = GridBagConstraints.NONE;
		gbc.anchor = GridBagConstraints.EAST;
		gbc.insets = new Insets(4, 16, 4, 8);
		gb.setConstraints(moreMelonsBtn, gbc);
		add(moreMelonsBtn);

		Fact[] tmp = UI.agent.ResourceDb().all(OntologyDb.MONEY);
		double cash = 0;
		for (int i = 0; i < tmp.length; i++)
		{
			tmp[i].resolve(new Bindings());
			PrimitiveNumericFn numFn =
			(PrimitiveNumericFn)tmp[i].getFn(OntologyDb.AMOUNT);
			cash += numFn.doubleValue();
		}

		cashLabel = new JLabel("Bank Balance: " + Misc.decimalPlaces(cash, 2));
		cashLabel.setFont(new Font("Helvetica", Font.PLAIN, 12));

		gbc.insets = new Insets(4, 8, 4, 0);
		gbc.gridwidth = 1;
		gbc.fill = GridBagConstraints.NONE;
		gbc.anchor = GridBagConstraints.WEST;
		gb.setConstraints(cashLabel, gbc);
		add(cashLabel);

		UI.agent.ResourceDb().addFactMonitor(this,
		   FactEvent.ADD_MASK | FactEvent.DELETE_MASK, true);
	}

	protected void update(Fact f)
	{
		Fact[] tmp = UI.agent.ResourceDb().all(f.getType());
		int num = 0;
		for (int i = 0; i < tmp.length; i++)
			num += tmp[i].getNumber();
		if (f.getType().equals("apple"))
			appleLabel.setText("Boxes of apples in stock: " + num);
		else if (f.getType().equals("orange"))
			orangeLabel.setText("Boxes of oranges in stock: " + num);
		else if (f.getType().equals("pear"))
			pearLabel.setText("Boxes of pears in stock: " + num);
		else if (f.getType().equals("banana"))
			bananaLabel.setText("Boxes of bananas in stock: " + num);
		else if (f.getType().equals("melon"))
			melonLabel.setText("Boxes of melons in stock: " + num);
	}


	public void actionPerformed(ActionEvent evt)
	{
		String fruit = null;
		if (evt.getSource() == moreApplesBtn)
			fruit = "apple";
		if (evt.getSource() == moreOrangesBtn)
			fruit = "orange";
		if (evt.getSource() == morePearsBtn)
			fruit = "pear";
		if (evt.getSource() == moreBananasBtn)
			fruit = "banana";
		if (evt.getSource() == moreMelonsBtn)
			fruit = "melon";

		UI.display("A box of " + fruit + "s arrives.");
		Fact[] tmp = UI.agent.ResourceDb().all(fruit);
		if (tmp.length > 0)
		{
			Fact f2 = new Fact(tmp[0]);
			int no = f2.getNumber();
			f2.setNumber(++no);
			UI.agent.ResourceDb().modify(tmp[0], f2);
		}
	}

	public void factAddedEvent(FactEvent event)
	{
		Fact fact = event.getFact();
		if (fact.getType().equals(OntologyDb.MONEY))
		{
			Fact[] tmp = UI.agent.ResourceDb().all(OntologyDb.MONEY);
			double cash = 0;
			for (int i = 0; i < tmp.length; i++)
			{
				tmp[i].resolve(new Bindings());
				PrimitiveNumericFn numFn =
				(PrimitiveNumericFn)tmp[i].getFn(OntologyDb.AMOUNT);
				cash += numFn.doubleValue();
			}
			cashLabel.setText("Bank Balance: " + Misc.decimalPlaces(cash, 2));
		}
		else
			update(fact);
	}

	public void factModifiedEvent(FactEvent event) { }
	public void factAccessedEvent(FactEvent event) { }

	public void factDeletedEvent(FactEvent event)
	{
		Fact fact = event.getFact();
		if (fact.getType().equals(OntologyDb.MONEY))
		{
			Fact[] tmp = UI.agent.ResourceDb().all(OntologyDb.MONEY);
			double cash = 0;
			for (int i = 0; i < tmp.length; i++)
			{
				tmp[i].resolve(new Bindings());
				PrimitiveNumericFn numFn =
						  (PrimitiveNumericFn)tmp[i].getFn(OntologyDb.AMOUNT);
				cash += numFn.doubleValue();
			}
			cashLabel.setText("Bank Balance: " + Misc.decimalPlaces(cash, 2));
		}
		else
			update(fact);
	}
}