import java.awt.*;

import java.awt.event.*;

import java.io.*;





public class project3 extends Frame implements ActionListener, WindowListener

{   // start of class project 3

    private static final long serialVersionUID = 1L;

    File curDir;



    Button OKButton = new Button("OK");

    Button TargetButton = new Button("Target");

    Label TargetLabel = new Label("Select a Target Directory");

    Label sourceSelected = new Label("MAN THIS PROJECT MIGHT BE HARD");

    Label sourceLabel = new Label("Source: ");

    Label FilenameLabel = new Label("File Name: ");

    TextField Filename = new TextField(70);

    List contentsList = new List(12);



    boolean targ_file = false;

    boolean source_file = false;

    boolean output = false;



     project3(String dir)

    {



    /***********************************************************

    * THIS IS ALL GUI DESIGN

    ************************************************************/

    int[] column_width = { 1, 1, 1,

                   1, 1, 1,

                   1, 1 };

    int[] row_height = { 1, 1, 1,

                 1, 1, 1,

                 1, 1, 1,

                 1, 1, 1,

                 1, 1, 1,

                 1, 1, 1 };

    double[] column_weight = { 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0};

    double[] row_weight = { 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0};

    GridBagLayout gbLayout = new GridBagLayout();

    GridBagConstraints gbc = new GridBagConstraints();



    gbLayout.rowWeights = row_weight;

    gbLayout.rowHeights = row_height;

    gbLayout.columnWidths = column_width;

    gbLayout.columnWeights = column_weight;



    this.setLayout(gbLayout);

    this.setSize(640, 320);



    gbc.weightx = 1.0D;

    gbc.weighty = 1.0D;

    gbc.gridx = 0;

    gbc.gridy = 0;

    gbc.gridwidth = GridBagConstraints.REMAINDER;

    gbc.fill = GridBagConstraints.BOTH;

    gbLayout.setConstraints(this.contentsList, gbc);

    add(contentsList);



    gbc = new GridBagConstraints();

    gbc.anchor = GridBagConstraints.EAST;

    gbLayout.setConstraints(sourceLabel, gbc);

    add(sourceLabel);



    gbc.gridwidth = GridBagConstraints.REMAINDER;

    gbc.anchor = GridBagConstraints.WEST;

    gbLayout.setConstraints(sourceSelected, gbc);

    add(sourceSelected);





    gbc = new GridBagConstraints();

    gbc.anchor = GridBagConstraints.EAST;

    gbLayout.setConstraints(TargetButton, gbc);

    add(TargetButton);



    gbc.fill = GridBagConstraints.BOTH;

    gbc.gridwidth = GridBagConstraints.REMAINDER;

    gbLayout.setConstraints(TargetLabel, gbc);

    add(TargetLabel);



    gbc = new GridBagConstraints();

    gbLayout.setConstraints(Filename, gbc);

    gbc.anchor = GridBagConstraints.EAST;

    gbLayout.setConstraints(FilenameLabel, gbc);

    gbc.fill = GridBagConstraints.BOTH;

    gbLayout.setConstraints(OKButton, gbc);



    add(FilenameLabel);

    add(Filename);

    add(OKButton);



    pack();

    setVisible(true);



    /****************************************************

    * END GUI DESIGN!!

    *****************************************************/



    addWindowListener(this);

    this.Filename.addActionListener(this);

    this.TargetButton.addActionListener(this);

    this.OKButton.addActionListener(this);

    this.contentsList.addActionListener(this);

    setFont(new Font("Monospaced", 0, 12));

    display(dir);

    } // end of Main constructor







    public void display(String dir)

    {

        boolean flag = false;



        if(dir != null)     // if not initilization call

        {

           if(dir.equals(".."))                 //  if looking for the parent directory

           {

               curDir = new File(curDir.getParent()); // get it

           }

           else         // otherwise

           {

               File temp = new File(curDir, dir);  // make temp file for manip of the passed string.



               if (temp.isDirectory())  // if the passed in string is a directory

               {

                   curDir = new File(curDir, dir);   //

               }



               if ((targ_file==true) && (source_file==true))  // if the sequential machiene has got the target and the source file

               {

                   FilenameLabel.setText(dir);      //  set the file name label to the passed string

                   output=true;                     //  set the output flag to true

                   flag = true;                     // set the boolean variable flag to true so we do not execute the next if

               }

               if(flag==false)  // if the above loop didn't execute get the absolute path name and make it the source lable,

               {

                    sourceLabel.setText(curDir.getAbsolutePath() + "\\" + dir);   // setting the text in the source label

                    source_file = true;    // and setting the flag

               }

            }

        }



        String [] names = null;

        try {

            names = curDir.list(); // making the string array

        }

        catch (NullPointerException e) {

        System.out.println("It's likely that it's not a directory.");

        }



        System.out.println("curDir list: " + names);



       if(names==null)

       {

        //curDir.list() says null if there is an I/O error or if it is not a directory.

                //      says empty array if there is nothing in the array, in which case the only thing shown should be ..

           //names = new String[0];

       }

       else // begin else A

       {

           setTitle(curDir.getAbsolutePath());  // set the title of the window to the current directory with full absolute path

           for (int i=0; i < names.length; i++)

           {



                File temp = new File(names[i]);  // temp file for storage of current string for manipulation

                if(temp.isDirectory()==false)     // if the current file isn't a directory, contune to next iteration of the for loop...

                {

                    continue;

            //shouldnt this add to the contentsList component?

                }

                else        // otherwise append a + sign to the filename cause it's a directory...

                {

                    names[i] = names[i] + " +";

            //use the list() method to determine if it is not a directory and if it is, if it has anything in it

                }



            }

        }









        contentsList.removeAll(); // clear the display contentlist



        if(curDir.getParent()!=null)        // if current directory has a parent, add the double dots to the list

        contentsList.add("..");



        // output the list to the screen



        int count=0;

        int length=0;



        length=names.length;



        while (count<=length)

        {

            contentsList.add(names[count]);

        }



    } // end of display



    public static void main(String[] args)

    {

        if (args.length > 0) {

         new project3(args[0]);

        } else {

         new project3(null);

        }

    } // end of main



    public void windowClosing(WindowEvent e)

    {

    }

    public void windowClosed(WindowEvent e)

    {

    }

    public void windowOpened(WindowEvent e)

    {

    }

    public void windowActivated(WindowEvent e)

    {

    }

    public void windowDeactivated(WindowEvent e)

    {

    }

    public void windowIconified(WindowEvent e)

    {

    }

    public void windowDeiconified(WindowEvent e)

    {

    }

    public void actionPerformed(ActionEvent e)

    {

        Object o = e.getSource();

        if (o == OKButton) {

            handleOKButton();

        }



        System.out.println("o: " + o);

    }



    void handleOKButton() {



    }



} // end of class project 3