package uk.ac.leeds.ccg.cluster;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.net.*;
import uk.ac.leeds.ccg.geotools.*;

public class GamButtonHandler implements ActionListener
{
    // Members
    Gamk gam;
    Viewer v;
    Frame fr;
    FileDialog fd;
    FilenameFilter ff;
    
    // Constructors
    public GamButtonHandler(Gamk g)
    {
	v=g.v;
	gam=g;
	// create a filedialog
	fr= new Frame();
	fd =new FileDialog(fr,"ShapeFile to load ");
	ff = new FileFil(fd,".shp");
    }

    // Methods
    public void actionPerformed(ActionEvent e)
    {
	// Find out which button was pressed
	String cmd = e.getActionCommand();
	// If button pressed was quit then exit the program
	if(cmd.equalsIgnoreCase("quit"))
	    {
		System.exit(0);
	    }
	// If button pressed was load then load a file
	if(cmd.equalsIgnoreCase("Load"))
	    {
		fd.setFilenameFilter(ff);
		fd.setVisible(true);
		// Find out which file was chosen
		if(fd.getFile()==null)
		    {                  // If no file chosen 
			return;        // then simply return
		    }
		File fs = new File(fd.getDirectory(),fd.getFile());
		System.out.println("File = "+fs);
		//try
		//    {ShapefileReader sr = new ShapefileReader(new URL("file://"+name.substring(0,i)));}
		//catch(MalformedURLException me){}
		try
		    {
			String name = fs.getCanonicalPath();
			int i = name.lastIndexOf(".shp");
			ShapefileReader sr = new ShapefileReader(name.substring(0,i));
			Theme t = sr.getTheme();
			t.setStyle(new ShadeStyle(false,true,null,Color.black,true));
			System.out.println(""+t);
			v.addTheme(t);
		    }
		catch(FileNotFoundException e1){}
		catch(IOException e2)
		    {
			System.err.println("File read error");
			return;
		    }
	    }
	// If button pressed was calculate
	if(cmd.equalsIgnoreCase("Calculate"))
	    {
		gam.run();
	    }
	// Handle setting parameters
  	if(cmd.equalsIgnoreCase("min"))
	    { 
		float r = getPar("Minimum Radius");
		gam.pars.setRadMin(r);
	    }
    }
    public float getPar(String name)
    {
	Dialog d = new Dialog(fr);
	d.add(new Label(name));
	TextField t = new TextField();
	d.add(t);
	//d.setModal(true);
	d.setVisible(true);
	return new Double(t.getText()).floatValue();
    }
}