package uk.ac.leeds.ccg.cluster;
/** Class: SpaceTimeParametersViewer
 *  Function: To display and modify SpaceTimeParameters
 */
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import uk.ac.leeds.ccg.geotools.misc.*;

public class SpaceTimeParametersViewer extends ParametersViewer implements ActionListener{

    // Members
    File file;
    //FilenameFilter filenameFilter;
    FileFil fileFil;
    FileDialog fileDialog;
    SpaceTimeParameters parameters;
    Label label;
    // These Textfield, Double Choice and checkboxes allow for the 
    // setting of SpaceTimeParameters from the SpaceTimeParametersViewer
    Double thresh,numRuns;
    TextField threshTextField,numRunsTextField;
    Checkbox animateCheckbox;
    MenuBar menuBar;
    Menu fileMenu;
    MenuItem loadSpaceTimeParametersMenuItem,saveSpaceTimeParametersMenuItem,closeMenuItem;
    Container parametersContainer,buttonContainer;
    GridBagLayout gridBagLayout;
    GridBagConstraints gridBagConstraints;
    Button applyButton,defaultButton,significanceTestSpaceTimeParametersButton;
    Frame frame;
    String actionCommand;
    boolean alternator=true;

    // Constructors
    public SpaceTimeParametersViewer(SpaceTimeParameters parameters){
	this.parameters = parameters;
	animateCheckbox = new Checkbox();
	animateCheckbox.setState(parameters.getAnimate());
	animateCheckbox.setLabel("Animate");
	//threshTextField = new TextField(""+parameters.getSignificanceThreshold());
	threshTextField = new TextField(""+FormatedString.format(""+parameters.getSignificanceThreshold(),4).trim());
	numRunsTextField = new TextField(""+parameters.getNumRuns());
    }

    // Methods
    public static void main(String args[]) throws IOException,FileNotFoundException{
	SpaceTimeParametersViewer pv = new SpaceTimeParametersViewer(new SpaceTimeParameters());
	pv.run();
    }

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

    public void initComponents(){
	// Set menu bar
	menuBar = new MenuBar();
	fileMenu = new Menu();
        fileMenu.setLabel("File");
        loadSpaceTimeParametersMenuItem = new MenuItem();
        loadSpaceTimeParametersMenuItem.addActionListener(this);
        loadSpaceTimeParametersMenuItem.setActionCommand("load parameters");
        loadSpaceTimeParametersMenuItem.setLabel("Load SpaceTimeParameters");
        fileMenu.add(loadSpaceTimeParametersMenuItem);
        saveSpaceTimeParametersMenuItem = new MenuItem();
        saveSpaceTimeParametersMenuItem.addActionListener(this);
        saveSpaceTimeParametersMenuItem.setActionCommand("save parameters");
        saveSpaceTimeParametersMenuItem.setLabel("Save SpaceTimeParameters");
        fileMenu.add(saveSpaceTimeParametersMenuItem);
        closeMenuItem = new MenuItem();
        closeMenuItem.addActionListener(this);
        closeMenuItem.setActionCommand("close");
        closeMenuItem.setLabel("Close");
        fileMenu.add(closeMenuItem);
	menuBar.add(fileMenu);
	// Display parametersContainer
	gridBagLayout = new GridBagLayout();
	gridBagConstraints = new GridBagConstraints();	
	parametersContainer = new Container();
	parametersContainer.setLayout(gridBagLayout);
        // SpaceTimeParameter thresh
	label = new Label("Significance Threshold");
	gridBagConstraints.anchor=GridBagConstraints.EAST;
	gridBagConstraints.gridwidth=GridBagConstraints.RELATIVE;
	gridBagLayout.setConstraints(label,gridBagConstraints);
	parametersContainer.add(label);
	threshTextField.setText(""+FormatedString.format(""+parameters.getSignificanceThreshold(),4));
	gridBagConstraints.anchor=GridBagConstraints.WEST;
	gridBagConstraints.gridwidth=GridBagConstraints.REMAINDER;
	gridBagLayout.setConstraints(threshTextField,gridBagConstraints);
	parametersContainer.add(threshTextField);
        // SpaceTimeParameter numRuns
        label = new Label("Number of runs");
	gridBagConstraints.anchor=GridBagConstraints.EAST;
	gridBagConstraints.gridwidth=GridBagConstraints.RELATIVE;
	gridBagLayout.setConstraints(label,gridBagConstraints);
	parametersContainer.add(label);
	numRunsTextField.setText(""+parameters.getNumRuns());
	gridBagConstraints.anchor=GridBagConstraints.WEST;
	gridBagConstraints.gridwidth=GridBagConstraints.REMAINDER;
	gridBagLayout.setConstraints(numRunsTextField,gridBagConstraints);
	parametersContainer.add(numRunsTextField);

	// Set buttonContainer and checkbox
	buttonContainer = new Container();
	buttonContainer.setLayout(gridBagLayout);
        applyButton = new Button();
	applyButton.setLabel("Apply");
	applyButton.addActionListener(this);
	applyButton.setActionCommand("apply");
	buttonContainer.add(applyButton);
        defaultButton = new Button();
	defaultButton.setLabel("Default");
	defaultButton.addActionListener(this);
	defaultButton.setActionCommand("default");
	buttonContainer.add(defaultButton);
        // significanceTestSpaceTimeParametersButton = new Button();
	// significanceTestSpaceTimeParametersButton.setLabel("SpaceTime Series Parameters");
	// significanceTestSpaceTimeParametersButton.addActionListener(this);
	// significanceTestSpaceTimeParametersButton.setActionCommand("significance test parameters");
	// buttonContainer.add(significanceTestSpaceTimeParametersButton);
	animateCheckbox.setState(parameters.getAnimate());
	buttonContainer.add(animateCheckbox);
    }

    public void setDisplay(){
	// Set frame
	frame = new Frame("SpaceTimeParameters");
	frame.setMenuBar(getMenuBar());
	frame.setLayout(gridBagLayout); 
	// Add buttonContainer
	gridBagConstraints.gridwidth=GridBagConstraints.REMAINDER;
	gridBagLayout.setConstraints(buttonContainer,gridBagConstraints);
	frame.add(buttonContainer,frame.getComponentCount());
                gridBagConstraints.gridwidth=GridBagConstraints.REMAINDER;
                gridBagLayout.setConstraints(parametersContainer,gridBagConstraints
);
                frame.add(parametersContainer);
	frame.pack();
	frame.setVisible(true);
    }
    
    public MenuBar getMenuBar(){return menuBar;}
    
    public void parseValues(){
	parameters.setAnimate(animateCheckbox.getState()); 
	thresh = new Double(threshTextField.getText());
	parameters.setSignificanceThreshold(thresh.doubleValue());
	numRuns = new Double(numRunsTextField.getText());
	parameters.setNumRuns((int)numRuns.doubleValue());
    }

    public void setText(){
	animateCheckbox.setState(parameters.getAnimate());
	threshTextField.setText(""+FormatedString.format(""+parameters.getSignificanceThreshold(),4).trim());
	numRunsTextField.setText(""+parameters.getNumRuns());
    }

    public void actionPerformed(ActionEvent actionEvent){
	actionCommand = new String(actionEvent.getActionCommand()); // Action command name
	// Menu actions
	if(actionCommand.equals("load parameters")){
	    System.out.println("Load SpaceTimeParameters File");
	    fileDialog = new FileDialog(new Frame());
	    fileFil = new FileFil(fileDialog,".parameters");
	    fileDialog.setTitle("Load SpaceTimeParameters File");
	    fileDialog.setFilenameFilter(fileFil);
	    fileDialog.setVisible(true);
	    if (fileDialog.getFile()==null) {return;}
	    file = new File(fileDialog.getDirectory(),fileDialog.getFile());
	    try{
		parameters = new SpaceTimeParameters(file);
		System.out.println(parameters.getAnimate());
		setText();
		parseValues();
		//dbase.load(file);
	    }
	    catch(IOException error){
		System.err.println("Error "+error+
				   "loading file "+file);
		return;
	    }
	}
	if(actionCommand.equals("save parameters")){
	    System.out.println("Save SpaceTimeParameters File");
	    fileDialog = new FileDialog(new Frame());
	    fileFil = new FileFil(fileDialog,".parameters");
	    fileDialog.setTitle("Save SpaceTimeParameters File");
	    fileDialog.setFilenameFilter(fileFil);
	    fileDialog.setVisible(true);
	    if (fileDialog.getFile()==null) {return;}
	    file = new File(fileDialog.getDirectory(),fileDialog.getFile());
	    try{
		parameters.writeSpaceTimeParameters(file);
		//dbase.save(file);
	    }
	    catch(IOException error){
		System.err.println("Error saving file "+error);
		return;
	    }
	}
	if(actionCommand.equals("close")){
	    frame.dispose();
	}
	// Button actions
	if(actionCommand.equals("apply")){
	    parseValues();
	    setText();
	    System.out.println("SpaceTimeParameters\n"+parameters);
	}
	if(actionCommand.equals("default")){
	    parameters.setDefaultSpaceTimeParameters();
	    setText();
	    System.out.println("SpaceTimeParameters\n"+parameters);
	}
	if(actionCommand.equals("significance test parameters")){
	    if(alternator==true){
		gridBagConstraints.gridwidth=GridBagConstraints.REMAINDER;
		gridBagLayout.setConstraints(parametersContainer,gridBagConstraints);
		frame.add(parametersContainer);
		frame.pack();
		alternator=false;
	    }
	    else{
		frame.remove(parametersContainer);
		frame.pack();
		alternator=true;
	    }
	}
    }
}