package example.javafiletree;

import java.awt.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.imageio.*;
import java.io.*;
import javax.swing.*;
import javax.swing.text.html.ListView;
import javax.swing.tree.*;

public class MainWin extends javax.swing.JFrame {

    /** Creates new form MainWin */
    public MainWin() {
        initComponents();
    }

    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {

        toolBar = new javax.swing.JToolBar();
        runButton = new javax.swing.JButton();
        statusBar = new javax.swing.JPanel();
        jSplitPane1 = new javax.swing.JSplitPane();
        jScrollTreePane = new javax.swing.JScrollPane();
        treeView = new javax.swing.JTree();
        jSplitPane2 = new javax.swing.JSplitPane();
        jScrolListlPane = new javax.swing.JScrollPane();
        listView = new javax.swing.JList();
        jTabbedPane1 = new javax.swing.JTabbedPane();
        jScrollPane1 = new javax.swing.JScrollPane();
        textArea = new javax.swing.JTextArea();
        jScrollPane2 = new javax.swing.JScrollPane();
        textPane = new javax.swing.JTextPane();
        jScrollPane3 = new javax.swing.JScrollPane();
        editorPane = new javax.swing.JEditorPane();
        jScrollPane4 = new javax.swing.JScrollPane();
        tableView = new javax.swing.JTable();
        pictureView = new javax.swing.JPanel();
        pictureLabel = new javax.swing.JLabel();
        menuBar = new javax.swing.JMenuBar();
        fileMenu = new javax.swing.JMenu();
        runMenuItem = new javax.swing.JMenuItem();
        editMenu = new javax.swing.JMenu();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        toolBar.setRollover(true);

        runButton.setText("Run");
        runButton.setFocusable(false);
        runButton.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);
        runButton.setVerticalTextPosition(javax.swing.SwingConstants.BOTTOM);
        runButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                runButtonClick(evt);
            }
        });
        toolBar.add(runButton);

        javax.swing.GroupLayout statusBarLayout = new javax.swing.GroupLayout(statusBar);
        statusBar.setLayout(statusBarLayout);
        statusBarLayout.setHorizontalGroup(
            statusBarLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 722, Short.MAX_VALUE)
        );
        statusBarLayout.setVerticalGroup(
            statusBarLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 16, Short.MAX_VALUE)
        );

        jSplitPane1.setDividerLocation(200);

        treeView.setRequestFocusEnabled(false);
        treeView.addTreeSelectionListener(new javax.swing.event.TreeSelectionListener() {
            public void valueChanged(javax.swing.event.TreeSelectionEvent evt) {
                treeViewValueChanged(evt);
            }
        });
        jScrollTreePane.setViewportView(treeView);

        jSplitPane1.setLeftComponent(jScrollTreePane);

        jSplitPane2.setDividerLocation(200);

        listView.setModel(new javax.swing.AbstractListModel() {
            String[] strings = { "Item 1", "Item 2", "Item 3", "Item 4", "Item 5" };
            public int getSize() { return strings.length; }
            public Object getElementAt(int i) { return strings[i]; }
        });
        listView.addListSelectionListener(new javax.swing.event.ListSelectionListener() {
            public void valueChanged(javax.swing.event.ListSelectionEvent evt) {
                listViewValueChanged(evt);
            }
        });
        jScrolListlPane.setViewportView(listView);

        jSplitPane2.setLeftComponent(jScrolListlPane);

        textArea.setColumns(20);
        textArea.setRows(5);
        jScrollPane1.setViewportView(textArea);

        jTabbedPane1.addTab("tab1", jScrollPane1);

        jScrollPane2.setViewportView(textPane);

        jTabbedPane1.addTab("tab2", jScrollPane2);

        jScrollPane3.setViewportView(editorPane);

        jTabbedPane1.addTab("tab3", jScrollPane3);

        tableView.setModel(new javax.swing.table.DefaultTableModel(
            new Object [][] {
                {null, null, null, null},
                {null, null, null, null},
                {null, null, null, null},
                {null, null, null, null}
            },
            new String [] {
                "Title 1", "Title 2", "Title 3", "Title 4"
            }
        ));
        jScrollPane4.setViewportView(tableView);

        jTabbedPane1.addTab("tab4", jScrollPane4);

        javax.swing.GroupLayout pictureViewLayout = new javax.swing.GroupLayout(pictureView);
        pictureView.setLayout(pictureViewLayout);
        pictureViewLayout.setHorizontalGroup(
            pictureViewLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(pictureViewLayout.createSequentialGroup()
                .addGap(34, 34, 34)
                .addComponent(pictureLabel)
                .addContainerGap(271, Short.MAX_VALUE))
        );
        pictureViewLayout.setVerticalGroup(
            pictureViewLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(pictureViewLayout.createSequentialGroup()
                .addGap(60, 60, 60)
                .addComponent(pictureLabel)
                .addContainerGap(280, Short.MAX_VALUE))
        );

        jTabbedPane1.addTab("tab5", pictureView);

        jSplitPane2.setRightComponent(jTabbedPane1);

        jSplitPane1.setRightComponent(jSplitPane2);

        fileMenu.setText("File");

        runMenuItem.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_R, java.awt.event.InputEvent.CTRL_MASK));
        runMenuItem.setText("Run");
        runMenuItem.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                runButtonClick(evt);
            }
        });
        fileMenu.add(runMenuItem);

        menuBar.add(fileMenu);

        editMenu.setText("Edit");
        menuBar.add(editMenu);

        setJMenuBar(menuBar);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(toolBar, javax.swing.GroupLayout.DEFAULT_SIZE, 722, Short.MAX_VALUE)
            .addComponent(statusBar, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
            .addComponent(jSplitPane1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 722, Short.MAX_VALUE)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addComponent(toolBar, javax.swing.GroupLayout.PREFERRED_SIZE, 25, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jSplitPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 369, Short.MAX_VALUE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(statusBar, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
        );

        pack();
    }// </editor-fold>//GEN-END:initComponents

    private void showInfo(String s)
    {
        textArea.append (s + "\r\n");
    }
    private DefaultTreeModel m = null;

    private void runButtonClick(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_runButtonClick
       // import javax.swing.tree.*;
       DefaultMutableTreeNode n =
               new DefaultMutableTreeNode ("Abc");
       m = new DefaultTreeModel (n);
       treeView.setModel (m);

       // import java.io.*;
       File [] subdirs = File.listRoots();
       int cnt = 0;
       for (int i = 0; i < subdirs.length; i++)
       {
           File f = subdirs [i];
           if (f.isDirectory())
           {
              Info info = new Info ();
              info.name = f.getAbsolutePath ();
              info.path = f.getAbsolutePath ();

              DefaultMutableTreeNode t =
                 new DefaultMutableTreeNode (info);

              info.node = t;

              m.insertNodeInto (t, n, cnt);
              cnt ++;
           }
       }       

    }//GEN-LAST:event_runButtonClick
    
    private MyModel list_model = new MyModel ();

    private void showFiles (Info top)
    {
       File dir = new File (top.path);
       File [] subitems = dir.listFiles ();

       if (subitems != null)
       {
           int cnt = 0;
           for (int i = 0; i < subitems.length; i++)
           {
               File f = subitems [i];
               if (f.isFile())
                  cnt ++;
           }

           list_model.table = new Info [cnt];

           int k = 0;
           for (int i = 0; i < subitems.length; i++)
           {
               File f = subitems [i];
               if (f.isFile())
               {
                  Info info = new Info ();
                  info.name = f.getName ();
                  info.path = f.getAbsolutePath ();

                  list_model.table [k] = info;
                  k ++;
               }
           }
       }

       listView.setModel (list_model);
       list_model.refresh ();
    }

    private void directoryClick (Info top)
    {
       showFiles (top);

       if (top.ready) return;
       top.ready = true;
       
       File dir = new File (top.path);
       File [] subdirs = dir.listFiles ();
       int cnt = 0;
       if (subdirs != null)
       for (int i = 0; i < subdirs.length; i++)
       {
           File f = subdirs [i];
           if (f.isDirectory())
           {
              Info info = new Info ();
              info.name = f.getName ();
              info.path = f.getAbsolutePath ();

              DefaultMutableTreeNode t =
                 new DefaultMutableTreeNode (info);

              info.node = t;

              m.insertNodeInto (t, top.node, cnt);
              cnt ++;
           }
       }
    }

    String [] textExts = { ".txt", ".cpp", ".c"};

    String [] imageExts = { ".jpg", ".jpeg", ".bmp"};

    private boolean hasExt (String name, String [] exts)
    {
        boolean result = false;

        for (int i = 0 ; i < exts.length; i ++)
            if (name.endsWith( exts[i]))
                result = true;

        return result;
    }

    private void fileClick (String path)
    {
       if (hasExt (path, textExts))
       {
           textArea.setText ("");
            try {
                FileInputStream stream = new FileInputStream(path);
                InputStreamReader tmp = new InputStreamReader (stream);
                BufferedReader reader = new BufferedReader (tmp);

                while (reader.ready ())
                {
                   String s = reader.readLine ();
                   textArea.append(s + "\n");
                }
                stream.close ();
            }
            catch (FileNotFoundException ex) { }
            catch (IOException ex) { }
       }

       if (hasExt (path, imageExts))
       {
            // try {
                // import java.awt.*;
                // import javax.imageio.*;
                // File f = new File (path);
                // Image image = ImageIO.read(f);
                // ImageIcon ico = new ImageIcon (image);
                ImageIcon ico = new ImageIcon (path);
                pictureLabel.setIcon (ico);
            // } catch (IOException ex) { }
       }
    }



    private void treeViewValueChanged(javax.swing.event.TreeSelectionEvent evt) {//GEN-FIRST:event_treeViewValueChanged
       TreePath [] paths = evt.getPaths ();
       for (int i = 0; i < paths.length; i ++)
       {
           TreePath p = paths [i];
           if (evt.isAddedPath(p))
           {
               // showInfo ("Selected " + p);
               Object obj = p.getLastPathComponent ();
               // showInfo ("Type " + obj.getClass().getName());
               if (obj instanceof DefaultMutableTreeNode)
               {
                   DefaultMutableTreeNode node =
                     (DefaultMutableTreeNode) obj;
                   Object user = node.getUserObject ();
                      showInfo ("Type " + user.getClass().getName());
                   if (user instanceof Info)
                   {
                      Info info = (Info) user;
                      showInfo ("Selected " + info.path);
                      showInfo ("Node " + info.node);
                      directoryClick (info);
                   }
               }
           }
      }
    }//GEN-LAST:event_treeViewValueChanged

    private void listViewValueChanged(javax.swing.event.ListSelectionEvent evt) {//GEN-FIRST:event_listViewValueChanged
        int inx = listView.getSelectedIndex();
        if (inx >= 0 && inx <= list_model.getSize())
        {
           Object obj = list_model.getElementAt (inx);
           if (obj instanceof Info)
           {
               Info info = (Info) obj;
               if (info != null)
                  fileClick (info.path);
           }
        }

    }//GEN-LAST:event_listViewValueChanged

    /**
    * @param args the command line arguments
    */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new MainWin().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JMenu editMenu;
    private javax.swing.JEditorPane editorPane;
    private javax.swing.JMenu fileMenu;
    private javax.swing.JScrollPane jScrolListlPane;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JScrollPane jScrollPane2;
    private javax.swing.JScrollPane jScrollPane3;
    private javax.swing.JScrollPane jScrollPane4;
    private javax.swing.JScrollPane jScrollTreePane;
    private javax.swing.JSplitPane jSplitPane1;
    private javax.swing.JSplitPane jSplitPane2;
    private javax.swing.JTabbedPane jTabbedPane1;
    private javax.swing.JList listView;
    private javax.swing.JMenuBar menuBar;
    private javax.swing.JLabel pictureLabel;
    private javax.swing.JPanel pictureView;
    private javax.swing.JButton runButton;
    private javax.swing.JMenuItem runMenuItem;
    private javax.swing.JPanel statusBar;
    private javax.swing.JTable tableView;
    private javax.swing.JTextArea textArea;
    private javax.swing.JTextPane textPane;
    private javax.swing.JToolBar toolBar;
    private javax.swing.JTree treeView;
    // End of variables declaration//GEN-END:variables


}