gaaaction.java

Java实现的遗传算法工具集：GA Playground

import java.awt.*;
import java.awt.event.*;
import java.text.*;
import java.net.*;
import java.util.Vector;
import java.util.Date;
import com.magelang.splitter.*;


public class GaaAction extends Panel 
	implements Runnable, ActionListener, MouseListener {

  GaaProblem problem;
	GaaPopulation pop;
	GaaFunction function;
	GaaMisc misc;
	
	public static GaaCanvas canvas;
	public static GaaLog deb;
	GaaLog helpwin;
	GaaLog rulewin;
	
	Graphics gra;
	Thread runner;
	
	boolean first;
	boolean running;
	long sleep;
	
	public static TextArea text;	
	TextField input1;
	TextField input2;
	Label statusLabel;
	
	Button textButton;
	Button graphicButton;
	Button buttons[];
	String butTips[];
	
	public static Label mainTitle;
	URL mainPage;
	Font buttonFont;
	Font labelFont;
	Date startDate;

	Dimension screenSize;
	DecimalFormat dFormat;


	public GaaAction(GaaProblem pr, GaaPopulation pl, GaaFunction fn) {
		int i;
		String s;
		String txt;

		buttonFont = new Font("TimesRoman",Font.BOLD,12);
		labelFont = new Font("TimesRoman",Font.BOLD,12);
		dFormat = new DecimalFormat("0.0000000");
		
		misc = new GaaMisc();
		deb = misc.deb;
		deb.inLog = true;

		statusLabel = GaaApplet.statusLabel;
		
		first = true;
		running = false;
		sleep = 50;
		
		setBackground(Color.lightGray);
		setLayout(new BorderLayout());
		
		Label title = new Label("GA Test");
		text = new TextArea("",50,10);
		input1 = new TextField();
		input2 = new TextField();
		input1.addMouseListener(this);
		input2.addMouseListener(this);

		problem = pr;
		pop = pl;
		function = fn;
		
		setLayout(new BorderLayout());

		Panel bot = new Panel();
		String butTitles[] = {"Start","Stop","  Pause  ","1 Step",
			"Kick","Reset","Clear","Decode Test","Eval Exp","Reserve"};
		String txts[] = {
			"Initialize population and start running current problem",
			"Stop running current problem and display current (last) population",
			"Pause/Resume evolutionary process (a toggle button)",
			"Execute one step (a single generation) and stop",
			"Induce a 'radiation dose' to shake current population",
			"Stop execution, initialize a new population, reset screens and wait",
			"Erase Text and Graphic screens",
			"Decode and Calculate the test chromosome and update graphic and chrmosome value boxes accordingly",
			"Evaluate a string expression in the form f(x1,x2..x20);x1=;x2=..     e.g. sin(x1)/x2;x1=0.5;x2=2",
			"Reserved for testing purposes"};
		butTips = txts;
		buttons = createButtonArray(butTitles, bot);
		//if (GaaApplet.gaaAppMode.equals("Applet"))
		//	buttons[8].disable();
		add("South",bot);
		
		buttons[1].disable();
		buttons[2].disable();

		Panel west = new Panel();
		west.add(new Label(" "));
		add("West",west);

		Panel east = new Panel();
		east.add(new Label(" "));
		add("East",east);

		Panel north = new Panel();
		Font BoldFont = new Font("TimesRoman",Font.BOLD,14);
		north.setFont(BoldFont);
		mainTitle = new Label("The GA Playground");
		mainTitle.setForeground(Color.black);
		north.add(mainTitle);
		add("North",north);

		canvas = new GaaCanvas(problem, pop, function);
		canvas.repaint();
		gra = canvas.getGra();

		Panel center = new Panel();
		center.setLayout(new GridLayout(1,2,10,10));
		center.add(createLeftPanel());
		center.add(createRightPanel());
		add("Center",center);
		
		Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
		resize(d.width-20,300);
		//resize(620,350);

		first = true;

	}

	private Button[] createButtonArray(String[] titles, Panel panel) {
		
		int i;
		Button buts[];
		
		Font f = new Font("TimesRoman",Font.BOLD,12);
		buts  = new Button[titles.length];
		
		for (i=0;i<titles.length;i++) {
			buts[i] = new Button(titles[i]);
			buts[i].setFont(f);
			buts[i].addMouseListener( this );
			panel.add(buts[i]);
		}
		
		return(buts);
		
	}


	private Panel createLeftPanel() {
		
		Panel panel = new Panel();
		panel.setLayout(new BorderLayout());
		
		Panel north = new Panel(new BorderLayout());
		Panel south = new Panel(new BorderLayout());
		
		textButton = new Button("Text Window (toggle)");
		textButton.setFont(labelFont);
		textButton.addMouseListener( this );
		
		Label lblTop = new Label("Text Window",Label.CENTER);
		Label lblBot = new Label("Test Chromosome Input Box",Label.CENTER);
		lblTop.setFont(labelFont);
		lblBot.setFont(labelFont);

		north.add("North",textButton);
		north.add("Center",text);
		
		south.add("North",lblBot);
		south.add("Center",input1);
		
		panel.add("Center",north);
		panel.add("South",south);
		
		return(panel);
		
	}
	
	
	
	private Panel createRightPanel() {
		
		Panel panel = new Panel();
		panel.setLayout(new BorderLayout());
		
		Panel north = new Panel(new BorderLayout());
		Panel south = new Panel(new BorderLayout());

		graphicButton = new Button("Graphic Window (Toggle)");
		graphicButton.setFont(labelFont);
		graphicButton.addMouseListener( this );

		Label lblTop = new Label("Graphic Window",Label.CENTER);
		Label lblBot = new Label("Test Chromosome Value",Label.CENTER);
		lblTop.setFont(labelFont);
		lblBot.setFont(labelFont);

		north.add("North",graphicButton);
		north.add("Center",canvas);
		
		south.add("North",lblBot);
		south.add("Center",input2);
		
		panel.add("Center",north);
		panel.add("South",south);
		
		return(panel);
		
	}

	
	public void updateActionPanel(GaaProblem pr, GaaPopulation pl, GaaFunction fn) {

		problem = pr;
		pop = pl;
		function = fn;
		
	}


	public void stop()
	{
		if (runner!=null)
		{
			runner.stop();
			runner=null;
			running = false;
		}
	}


	public void run() {
		
		String txt = "";

		while (running) {
			pop.newGeneration();
			double d1 = pop.vals[0];
			double d2 = pop.bestVal;
			double d3 = problem.currentBestVal;
			String s1 = pop.chroms[0];
			String s2 = pop.bestChrom;
			String s3 = problem.currentBestChrom;
			
			if (problem.withGraphicWindow) {
		 		canvas.repaint();
		 	}
	 		if (problem.withTextWindow) {
		 		txt = "#" + pop.generation +"  Current: " + pop.chroms[0] + " :  " + GaaMisc.formatDouble(pop.vals[0],3) + "\n";
				text.appendText(txt);
			}
			
		 	if (pop.exitFlag) {
		 		
				showBest();
				showDecodedChrom(pop.bestChrom);
				canvas.repaint();
				buttons[0].enable();
				buttons[1].disable();
				buttons[2].disable();
				buttons[2].setLabel("  Pause  ");
		 		
				runner.stop();
				runner = null;
				running = false;
		 		
		 	}
		 	try { Thread.sleep(sleep);}
		 	catch (InterruptedException e) {
				//showStatus("Thread.sleep InterruptedException "+e.toString());
			}
		}
		
	}


	public void restart(boolean reset) {

		if (runner!=null) {
			runner.stop();
			runner = null;
			running = false;
		}	

		if (reset) {
			//HistoryData.removeAllElements();
		}

		boolean b = GaaApplet.keepOldPop;
		pop.initPopulation();
		GaaApplet.keepOldPop = false;
		text.appendText("\n\n");

		try {
			runner = new Thread(this);
			runner.start();
			running = true;
		}
		catch (Exception e) {
			deb.debug("Restart error: " + e.toString());
		}
		

	}


	

	void displayParameters() {
		
		text.setText(problem.parameterString());
			
	}
	
	
	void displayPopList(boolean descending) {
		
		text.setText(pop.poplistTableString());
			
	}


	void showBest() {
		
		pop.currentId = 0;
		double value = function.getValue(pop.bestChrom);
		pop.chroms[0] = pop.bestChrom;
		input1.setText("Best chromosome: "+pop.bestChrom);
		input2.setText("Best chromosome value: "+value);
		canvas.repaint();

	}
	

	public void showDecodedChrom(String chrom) {
		
		text.appendText(function.getDecodedChrom(chrom));
		
	}
	
	
	public void resizeFrame(Frame frame) {

		Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
		int w = d.width;
		int h = d.height;
		frame.reshape(0,0,w,h);

		frame.show();

		/*
		int fw = 640;
		int fh = 480;
		int dw = (int) (w - fw)/2;
		int dh = (int) (h - fh)/2;
		frame.reshape(dw,dh,fw,fh);
		*/

	}


	private void evalTestExpression() {
		
		double d; 
		int i, ret;
		String txt;
		String expr;
		double vars[];
		String parts[];
		String pairs[];
		
		vars = new double[21];
		for (i=0;i<21;i++)
			vars[i] = 0;
		
		txt = input1.getText();
		parts = FileInput.parseStr(txt, ";");
		
		if (parts.length > 1) {
			expr = parts[0];
			for (i=1;i<parts.length;i++) {
				pairs = FileInput.parseStr(parts[i], "=");
				vars[i] = Double.valueOf(pairs[1]).doubleValue();
			}
		}
		else {
			ret = MsgDialog.msg("Error", "Test string is not formatted correctly", MsgDialog.MB_OK, 0);
			return;	
		}
				
		d = JelProcs.calc(expr,vars);
		
		txt = "Result: "+d;
		input2.setText(txt);
		GaaApplet.statusLabel.setText(txt);
		
	}
	
	
	
	public void centerFrame(Frame frame) {

		Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
		int w = d.width;
		int h = d.height;
		int fw = 640;
		int fh = 480;
		int dw = (int) (w - fw)/2;
		int dh = (int) (h - fh)/1;
		frame.move(dw,dh);

	}



    public void mouseEntered(MouseEvent e) {
    	
    	int i, j;
    	
    	if (problem.withStatusHelp) {
				if (e.getSource() instanceof TextField) {
					TextField txt = (TextField)e.getSource();
					if (txt == input1)
						GaaApplet.statusLabel.setText("Enter a legitimate chromosome string for checking");
					else
					if (txt == input2)
						GaaApplet.statusLabel.setText("This text box displays the calculated value of the test chromosome");
				}
				else
				if (e.getSource() instanceof Button) {
					Button but = (Button)e.getSource();
					for (i=0;i<buttons.length;i++) 
						if (but == buttons[i]) {
							GaaApplet.statusLabel.setText(butTips[i]);
						}
				}
			}
    	
    }


    public void mouseExited(MouseEvent e) {
    	
    	GaaApplet.statusLabel.setText("");
    	
    }
    

    public void mouseClicked(MouseEvent e) {
    	
    	int i,j,ret;
			boolean rt = true;
			String s1, s2, s3, s4;
			long oldtime, newtime, timediff;

			if (e.getSource() instanceof Button)
			{
				Button btn = (Button)e.getSource();
				if (btn == buttons[0]) {
					if ((GaaApplet.gaaAppMode.equals("Applet")) && (problem.problemCode == 3)) {
						ret = MsgDialog.msg("Cannot run in Applet mode", "This problem can only be run in Application mode", MsgDialog.MB_OK, 0);
						return;	
					}
					text.setText("");
					deb.clear();
					deb.start();
					canvas.clear();
					buttons[0].disable();
					buttons[1].enable();
					buttons[2].enable();
					buttons[2].setLabel("  Pause  ");
					restart(true);
				}
				else if (btn == buttons[1]) {
					runner.stop();
					runner = null;
					running = false;
					canvas.repaint();
					buttons[0].enable();
					buttons[1].disable();
					buttons[2].disable();
					buttons[2].setLabel("  Pause  ");
					
					showBest();
					showDecodedChrom(pop.bestChrom);
					
				}
				else if (btn == buttons[2]) {
					if (!(runner == null)) {
						if (running) {
							runner.suspend();
							running = false;
							canvas.repaint();
							buttons[2].setLabel(" Continue ");
						}
						else {
							runner.resume();
							running = true;
							buttons[2].setLabel("  Pause  ");
						}
						rt = true;
					}
					
				}
				else if (btn == buttons[3]) {
					pop.runEvolution(1);
					displayPopList(true);
					canvas.repaint();
				}
				else if (btn == buttons[4]) {
					pop.kick();
					canvas.repaint();		
					displayPopList(true);
				}
				else if (btn == buttons[5]) {
					text.setText("");
					input1.setText("");
					input2.setText("");
					pop.initPopulation();
					displayPopList(true);	
					canvas.repaint();		
				}
				else if (btn == buttons[6]) {
					text.setText("");
					input1.setText("");
					input2.setText("");
					deb.clear();
					canvas.clear();
				}
				else if (btn == buttons[7]) {
					String txt = input1.getText();
					String old = pop.chroms[0];
					pop.currentId = 0;
					double value = function.getValue(txt);
					pop.chroms[0] = txt;
					pop.bestChrom = txt;
					input2.setText(""+value);
					canvas.repaint();
					showDecodedChrom(txt);
				}
				else if (btn == buttons[8]) {
					if (GaaApplet.gaaAppMode.equals("Applet")) 
						ret = MsgDialog.msg("Not supported in Applet mode", "This option is available only in Application mode", MsgDialog.MB_OK, 0);
					else
						evalTestExpression();
				}
				else if (btn == buttons[9]) {
					
				}
				else if (btn == textButton) {
					problem.withTextWindow = !problem.withTextWindow;
					if (problem.withTextWindow) 
						textButton.setForeground(Color.blue);
					else
						textButton.setForeground(Color.black);
				}
				else if (btn == graphicButton) {
					problem.withGraphicWindow = !problem.withGraphicWindow;
					if (problem.withGraphicWindow) 
						graphicButton.setForeground(Color.blue);
					else
						graphicButton.setForeground(Color.black);
				}

			}
    	
    }

    public void mousePressed(MouseEvent e) {
    	
    		 //GaaApplet.statusLabel.setText("Mouse Entered: "+e.toString());
        if (e.isMetaDown()) {
            //GaaApplet.statusLabel.setText("Right Button: xy= "+e.getX()+" / "+e.getY());
        }
      
    }

    public void mouseReleased(MouseEvent e) {
    		//statusLabel.setText("");
    }    
	
    public void actionPerformed( ActionEvent evt ) {
			Object src = evt.getSource();
			//GaaApplet.statusLabel.setText("Action evt= "+evt.toString()+" src= "+src.toString());
    }
    


}