package BuildSim;

import CollabUtils.*;

import java.util.GregorianCalendar;
import javax.swing.JFrame;
//import javax.swing.JLabel;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.JScrollPane;
import javax.swing.JViewport;
import java.awt.Container;
import java.awt.Color;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.Point;
//import java.awt.Rectangle;
import java.text.SimpleDateFormat;



    
/** Create a GUI for the building simulator.
 * This is based on the one from the Date Investigator.
 * The window has a text field where the user can type in a date
 * There is a text area where the results of the investigation are displayed
 *
 * @author  dickey
 */
class Proj4GUI extends JFrame {
    
    /** number of instances of this class which have been created.
     */
    private static int instanceCount = 0;
    
    /** //place text to display here.
     note protected access.
     */
    JTextArea outputArea; 
    
    //BuildingModel buildMod;
    private IApplicationIdentification owner;
    
        /** do little in the constructor
         */
    Proj4GUI(IApplicationIdentification owner) {
        super(owner.getApplicationDescription());
        instanceCount++;
        assert owner != null;
        this.owner = owner;
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.addWindowListener(new WindowAdapter() {
            public void windowClosing(ActionEvent ev) {
                System.out.println("GUI got window closing event.");
                System.exit(0); //not working??
            }
        });
        buildUI(); //build the GUI components
    } //end constructor
    
    /** build the GUI frame and display it
     */
    private void buildUI() {
        Toolkit tk = Toolkit.getDefaultToolkit();
        Dimension screensize = tk.getScreenSize();
        int windowWidth = (screensize.width - 20) / 2;
        int windowHeight = screensize.height - 100;
        this.setSize(windowWidth, windowHeight);
        Container contents = this.getContentPane();
        contents.removeAll(); //in case the method is called more than once
        //use a border layout (should be the default anyway)
        contents.setLayout(new BorderLayout());
        
        //create a textarea to hold program information, place it at the top
        String instructions = owner.getApplicationDescription() + 
                            " by " + owner.getApplicationAuthor();
        GregorianCalendar g = owner.getApplicationDate();
        instructions += "  " + (new SimpleDateFormat()).format(g.getTime());
        instructions += "\n" + owner.getApplicationDescriptionDetails();
        instructions += "\n" + owner.getUsageInformation();
            //Use a JTextArea instead of a JLabel, so that '\n' will work.
        JTextArea labelArea = new JTextArea("basic info");
        labelArea.setEnabled(false); //no typing allowed.
        labelArea.setText(instructions);
        labelArea.setBackground(new Color(250,255,200));
        
        //create a big output textarea
        outputArea = new JTextArea("Results will appear here");
        outputArea.setEnabled(false); //don't let user type in 
        outputArea.setBackground(new Color(230,230,255));
        Font origFont = outputArea.getFont();
        outputArea.setFont(origFont.deriveFont(Font.BOLD));
        
        this.show();
        
        /** Can't know location until after frame is visible.
         */
        Dimension paneSize = contents.getSize();
        Point screenLoc = this.getLocationOnScreen();
        int xLoc = screenLoc.x + (Proj4GUI.instanceCount-1) * windowWidth;
        this.setLocation(xLoc, screenLoc.y);
        
        //Now that we know the size of the content pane, resize the components.
        final int w1 = paneSize.width;  final int h1 = paneSize.height / 5;
        Dimension labelSize = new Dimension(w1, h1);
        //labelArea.setPreferredSize(labelSize);
        JScrollPane infoPane = new JScrollPane(labelArea);
        infoPane.setPreferredSize(labelSize);
        contents.add(infoPane, BorderLayout.NORTH);        

        final int w2 = w1;   final int h2 = paneSize.height - h1 - 2;
        final Dimension areaSize = new Dimension(w2, h2);
        //this.outputArea.setPreferredSize(areaSize);
        JScrollPane outputPane = new JScrollPane(outputArea);         
        outputPane.setPreferredSize(areaSize);
        contents.add(outputPane, BorderLayout.SOUTH);
        
        this.show();
    } //end buildUI
//end Proj4GUI 
}