package uk.ac.leeds.ccg.cluster;
/** Random Parameters Viewer
 *  To display and modify Random Parameters
 */
import java.io.*;
import java.awt.*;
import java.awt.event.*;

public class RandomParametersViewer extends ParametersViewer implements ActionListener{
    // Members
    Container randomParametersContainer;
    // These Doubles and TextFields allow for the setting of 
    // RandomParameters from the RandomParametersViewer
    TextField nCirclesTextField = new TextField(""+((RandomParameters)parameters).getNCircles());
    TextField radMinTextField = new TextField(""+((RandomParameters)parameters).getRadMin());
    TextField radMaxTextField = new TextField(""+((RandomParameters)parameters).getRadMax());
    Double nCircles,radMin,radMax;

    // Constructors
    public RandomParametersViewer(Parameters parameters){
	super(parameters);
    }

    // Methods
    public static void main(String args[])
	throws IOException,FileNotFoundException{
	RandomParametersViewer randomParametersViewer = new RandomParametersViewer
	    (new RandomParameters());
	randomParametersViewer.run();
    }

    public void run(){
	initComponents();
	setDisplay();
    }

    public void initComponents(){
	// Parameters come first as ParametersViewer instantiates the 
	// gridBagLayout gridBagLayout and gridBagConstraints gridBagConstraints
	super.initComponents();
	randomParametersContainer = new Container();
	randomParametersContainer.setLayout(gridBagLayout);
	// Random Parameter nCircles
	label = new Label("Number of circles");
	gridBagConstraints.anchor=GridBagConstraints.EAST;
	gridBagConstraints.gridwidth=GridBagConstraints.RELATIVE;
	gridBagLayout.setConstraints(label,gridBagConstraints);
	randomParametersContainer.add(label);
	nCirclesTextField.setText(""+((RandomParameters)parameters).getNCircles());
	gridBagConstraints.anchor=GridBagConstraints.WEST;
	gridBagConstraints.gridwidth=GridBagConstraints.REMAINDER;
	gridBagLayout.setConstraints(nCirclesTextField,gridBagConstraints);
	randomParametersContainer.add(nCirclesTextField);
	// Random Parameter radMin
	label = new Label("Minimum circle radius");
	gridBagConstraints.anchor=GridBagConstraints.EAST;
	gridBagConstraints.gridwidth=GridBagConstraints.RELATIVE;
	gridBagLayout.setConstraints(label,gridBagConstraints);
	randomParametersContainer.add(label);
	radMinTextField.setText(""+((RandomParameters)parameters).getRadMin());
	gridBagConstraints.anchor=GridBagConstraints.WEST;
	gridBagConstraints.gridwidth=GridBagConstraints.REMAINDER;
	gridBagLayout.setConstraints(radMinTextField,gridBagConstraints);
	randomParametersContainer.add(radMinTextField);
	// Random Parameter radmax
	label = new Label("Maximum circle radius");
	gridBagConstraints.anchor=GridBagConstraints.EAST;
	gridBagConstraints.gridwidth=GridBagConstraints.RELATIVE;
	gridBagLayout.setConstraints(label,gridBagConstraints);
	randomParametersContainer.add(label);
	radMaxTextField.setText(""+((RandomParameters)parameters).getRadMax());
	gridBagConstraints.anchor=GridBagConstraints.WEST;
	gridBagConstraints.gridwidth=GridBagConstraints.REMAINDER;
	gridBagLayout.setConstraints(radMaxTextField,gridBagConstraints);
	randomParametersContainer.add(radMaxTextField);
    }

    public void setDisplay(){
	super.setDisplay();
	gridBagConstraints.gridwidth=GridBagConstraints.REMAINDER;
	gridBagLayout.setConstraints(randomParametersContainer,gridBagConstraints);
	frame.add(randomParametersContainer,frame.getComponentCount());
        frame.pack();
    }
 
    public void parseValues(){
	super.parseValues();
	nCircles = new Double(nCirclesTextField.getText());
	((RandomParameters)parameters).setNCircles((int)nCircles.doubleValue());
	radMin = new Double(radMinTextField.getText());
	((RandomParameters)parameters).setRadMin(radMin.doubleValue());
	radMax = new Double(radMaxTextField.getText());
	((RandomParameters)parameters).setRadMax(radMax.doubleValue());
    }

    public void setText(){
	super.setText();
	nCirclesTextField.setText(""+((RandomParameters)parameters).getNCircles());
	radMinTextField.setText(""+((RandomParameters)parameters).getRadMin());
	radMaxTextField.setText(""+((RandomParameters)parameters).getRadMax());
    }

    public void actionPerformed(ActionEvent actionEvent){
	actionCommand = new String(actionEvent.getActionCommand());
	if(actionCommand.equals("load parameters")){
	    System.out.println("Load Parameters File");
	    fileDialog = new FileDialog(new Frame());
	    fileFil = new FileFil(fileDialog,".pars");
	    fileDialog.setTitle("Load Random Parameters File");
	    fileDialog.setFilenameFilter(fileFil);
	    fileDialog.setVisible(true);
	    if (fileDialog.getFile()==null) {return;}
	    file = new File(fileDialog.getDirectory(),fileDialog.getFile());
	    try{
		parameters = new RandomParameters(file);
		setText();
		parseValues();
		//dbase.load(file);
	    }
	    catch(IOException error){
		System.err.println("Error loading file "+error);
		return;
	    }
	}
	else{
	    // This works because calling super.actionPerformed(actionEvent) from this class
	    // uses the methods in this class first if they exist.
	    super.actionPerformed(actionEvent);
	}
    }
}