/*
 * GUI
 */
package testapp;

import com.jgoodies.forms.layout.CellConstraints;
import com.jgoodies.forms.layout.FormLayout;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.File;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import java.util.logging.*;
import javax.swing.JProgressBar;

/**
 *
 * @author eisenhauer
 */
public class AppFrame extends JFrame {

    private static final Logger logger = Logger.getLogger(AppFrame.class.getName());
    
    private JPanel taskPanel;
    private JTextField urlTxf;
    private JButton loadBtn;
    private ImageComponent imgComp;
    private JScrollPane imgScroll;
    private static AppFrame theInstance = null;
    private JPanel progressPanel;

    public AppFrame(String title) {
        super(title);
        theInstance = this;
        initUI();
        
        
    }

    public static AppFrame getInstance() {
        return theInstance;
    }

    private void initUI() {
        this.addWindowListener(new WindowAdapter() {

            @Override
            public void windowClosing(WindowEvent e) {
                if (imgComp != null) {
                    if (imgComp.getFile() != null) {
                        // TODO
                        //imgComp.getFile().delete();
                    }
                }
                System.exit(0);
            }
        });
        Container cont = this.getContentPane();
        ButtonListener bl = new ButtonListener();
        CellConstraints cc = new CellConstraints();
        setLayout(new BorderLayout());
        taskPanel = new JPanel();
        String colSpec = "5dlu,p,5dlu,200dlu,5dlu,p,5dlu";
        String rowSpec = "5dlu,p,5dlu,p,5dlu";
        taskPanel.setLayout(new FormLayout(colSpec, rowSpec));
        int row = 2;
        JLabel urlLabel = new JLabel("URL:");
        taskPanel.add(urlLabel, cc.xy(2, row));
        urlTxf = new JTextField("");
        taskPanel.add(urlTxf, cc.xy(4, row));
        loadBtn = new JButton("Analyze");
        loadBtn.setActionCommand("LOADURL");
        loadBtn.addActionListener(bl);
        urlTxf.addKeyListener(bl);
        taskPanel.add(loadBtn, cc.xy(6, row));
        imgComp = new ImageComponent();
        imgScroll = new JScrollPane(imgComp);
        imgScroll.setPreferredSize(new Dimension(200, 200));
        
        JProgressBar progressBar = new JProgressBar();
        progressBar.setIndeterminate(true);
        progressPanel = new JPanel();
        progressPanel.setVisible(false);
        progressBar.setPreferredSize(new Dimension (500,25));
        
        imgScroll.setForeground(Color.white);
        
        progressBar.setBackground(Color.black);
        progressBar.setForeground(Color.red);
        
        
        progressPanel.add(progressBar);
               
        
        cont.add(progressPanel, BorderLayout.SOUTH);
        cont.add(taskPanel, BorderLayout.NORTH);
        cont.add(imgScroll, BorderLayout.CENTER);
    }

    public void endProgressBar ()
    {
        progressPanel.setVisible(false);
    }
    
    private void onLoad() {
        String url = urlTxf.getText();
        
        if (!url.startsWith("http://"))
            url = "http://" + url;
               
        ItemGenerator ig = new ItemGenerator(url, progressPanel);
        
        progressPanel.setVisible(true);
        
        ig.execute();
    }

    public void setImage(File img) {
        if (!img.canRead()) {
            logger.log(Level.SEVERE,"Cannot read File");
            return;
        }
        if (imgComp.getFile() != null) {
            //TODO
            //imgComp.getFile().delete();
        }
        imgComp.setImage(img);
        imgScroll.revalidate();
        progressPanel.setVisible(false);
    }

    public File getImageFile() {
        return imgComp.getFile();
    }

    public class ButtonListener implements ActionListener, KeyListener {

        public void actionPerformed(ActionEvent e) {
            String cmd = e.getActionCommand();
            if (cmd.equals("LOADURL")) {
                onLoad();
            }
        }

        public void keyTyped(KeyEvent e) {
        }

        public void keyPressed(KeyEvent e) {
           int key = e.getKeyCode();
            if (key == KeyEvent.VK_ENTER) {
                onLoad();
            }
        }

        public void keyReleased(KeyEvent e) {
        }
    }
    
    
}