package myproject;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import com.borland.dbswing.*;

/**
 * Title:        A Project to hold test programs
 * Description:
 * Copyright:    Copyright (c) 2001
 * Company:      Actis Ltd.
 * @author Martin Milner
 * @version 1.0
 */

public class TextEditFrame extends JFrame {
  JPanel contentPane;
  JMenuBar jMenuBar1 = new JMenuBar();
  JMenu jMenuFile = new JMenu();
  JMenuItem jMenuFileExit = new JMenuItem();
  JMenu jMenuHelp = new JMenu();
  JMenuItem jMenuHelpAbout = new JMenuItem();
  JToolBar jToolBar = new JToolBar();
  JButton openButton = new JButton();
  JButton saveButton = new JButton();
  JButton helpButton = new JButton();
  ImageIcon image1;
  ImageIcon image2;
  ImageIcon image3;
  JLabel statusBar = new JLabel();
  BorderLayout borderLayout1 = new BorderLayout();
  JButton saveAsButton = new JButton();
  JMenu jMenuEdit = new JMenu();
  JMenu jMenuOptions = new JMenu();
  JMenuItem jMenuOptionsFont = new JMenuItem();
  JMenuItem jMenuOptionsBack = new JMenuItem();
  JMenuItem jMenuOptionsText = new JMenuItem();
  JMenuItem jMenuEditCopy = new JMenuItem();
  JMenuItem jMenuEditPaste = new JMenuItem();
  JMenuItem jMenuEditCut = new JMenuItem();
  JMenuItem jMenuFileOpen = new JMenuItem();
  JMenuItem jMenuFileNew = new JMenuItem();
  JMenuItem jMenuSaveAs = new JMenuItem();
  JMenuItem jMenuFileSave = new JMenuItem();

  // My variables
  String currFileName=null;
  boolean dirty=false;
  boolean wrap=false;
  JScrollPane jScrollPane1 = new JScrollPane();
  JTextArea jTextArea1 = new JTextArea();
  JColorChooser jColorChooser1 = new JColorChooser();
  JFileChooser jFileChooser1 = new JFileChooser();
  JMenuItem jMenuOptionsWrap = new JMenuItem();
  FontChooser fontChooser1 = new FontChooser();
  JMenuItem jMenuItem1 = new JMenuItem();

  /**Construct the frame*/
  public TextEditFrame() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  /**Component initialization*/
  private void jbInit() throws Exception  {
    image1 = new ImageIcon(myproject.TextEditFrame.class.getResource("openFile.gif"));
    image2 = new ImageIcon(myproject.TextEditFrame.class.getResource("closeFile.gif"));
    image3 = new ImageIcon(myproject.TextEditFrame.class.getResource("help.gif"));
    //setIconImage(Toolkit.getDefaultToolkit().createImage(TextEditFrame.class.getResource("[Your Icon]")));
    contentPane = (JPanel) this.getContentPane();
    contentPane.setLayout(borderLayout1);
    this.setSize(new Dimension(593, 426));
    this.setTitle("My Text Editor");
    statusBar.setText(" ");
    jMenuFile.setText("File");
    jMenuFileExit.setToolTipText("Terminate Program");
    jMenuFileExit.setText("Exit");
    jMenuFileExit.addActionListener(new ActionListener()  {
      public void actionPerformed(ActionEvent e) {
        jMenuFileExit_actionPerformed(e);
      }
    });
    jMenuHelp.setText("Help");
    jMenuHelpAbout.setText("About");
    jMenuHelpAbout.addActionListener(new ActionListener()  {
      public void actionPerformed(ActionEvent e) {
        jMenuHelpAbout_actionPerformed(e);
      }
    });
    openButton.setIcon(image1);
    openButton.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        openButton_actionPerformed(e);
      }
    });
    openButton.setToolTipText("Open File");
    saveButton.setIcon(image2);
    saveButton.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        saveButton_actionPerformed(e);
      }
    });
    saveButton.setToolTipText("Save File");
    helpButton.setIcon(image3);
    helpButton.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        helpButton_actionPerformed(e);
      }
    });
    helpButton.setToolTipText("Help");
    saveAsButton.setToolTipText("Save As");
    saveAsButton.setIcon(new ImageIcon(TextEditFrame.class.getResource("closeFile.gif")));
    saveAsButton.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        saveAsButton_actionPerformed(e);
      }
    });
    jMenuEdit.setText("Edit");
    jMenuOptions.setText("Options");
    jMenuOptionsFont.setToolTipText("Change the Font");
    jMenuOptionsFont.setText("Font");
    jMenuOptionsFont.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jMenuOptionsFont_actionPerformed(e);
      }
    });
    jMenuOptionsBack.setToolTipText("Select a Background Colour");
    jMenuOptionsBack.setText("Set Background Colour");
    jMenuOptionsBack.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jMenuOptionsBack_actionPerformed(e);
      }
    });
    jMenuOptionsText.setToolTipText("Select the text colour");
    jMenuOptionsText.setText("Set Text Colour");
    jMenuOptionsText.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jMenuOptionsText_actionPerformed(e);
      }
    });
    jMenuEditCopy.setToolTipText("Copy selected text");
    jMenuEditCopy.setText("Copy");
    jMenuEditCopy.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jMenuEditCopy_actionPerformed(e);
      }
    });
    jMenuEditPaste.setToolTipText("Paste into document");
    jMenuEditPaste.setText("Paste");
    jMenuEditPaste.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jMenuEditPaste_actionPerformed(e);
      }
    });
    jMenuEditCut.setToolTipText("Cut selected Text");
    jMenuEditCut.setText("Cut");
    jMenuEditCut.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jMenuEditCut_actionPerformed(e);
      }
    });
    jMenuFileOpen.setToolTipText("Open existing File");
    jMenuFileOpen.setText("Open");
    jMenuFileOpen.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jMenuFileOpen_actionPerformed(e);
      }
    });
    jMenuFileNew.setToolTipText("Create new doument");
    jMenuFileNew.setText("New");
    jMenuFileNew.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jMenuFileNew_actionPerformed(e);
      }
    });
    jMenuSaveAs.setToolTipText("Save file as another");
    jMenuSaveAs.setText("Save As");
    jMenuSaveAs.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jMenuSaveAs_actionPerformed(e);
      }
    });
    jMenuFileSave.setToolTipText("Save current file");
    jMenuFileSave.setText("Save");
    jMenuFileSave.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jMenuFileSave_actionPerformed(e);
      }
    });
    jTextArea1.addKeyListener(new java.awt.event.KeyAdapter() {
      public void keyPressed(KeyEvent e) {
        jTextArea1_keyPressed(e);
      }
      public void keyTyped(KeyEvent e) {
        jTextArea1_keyTyped(e);
      }
    });
    jMenuOptionsWrap.setToolTipText("Toggle Word Wrap");
    jMenuOptionsWrap.setText("Wrap");
    jMenuOptionsWrap.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jMenuOptionsWrap_actionPerformed(e);
      }
    });
    fontChooser1.setFrame(this);
    fontChooser1.setTitle("Select a Font");
    fontChooser1.setSampleText("Sample Text");
    jMenuItem1.setToolTipText("Print current file");
    jMenuItem1.setText("Print");
    jMenuItem1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jMenuItem1_actionPerformed(e);
      }
    });
    jToolBar.add(openButton);
    jToolBar.add(saveButton);
    jToolBar.add(saveAsButton, null);
    jToolBar.add(helpButton);
    jMenuFile.add(jMenuFileNew);
    jMenuFile.add(jMenuFileOpen);
    jMenuFile.add(jMenuItem1);
    jMenuFile.add(jMenuFileSave);
    jMenuFile.add(jMenuSaveAs);
    jMenuFile.addSeparator();
    jMenuFile.add(jMenuFileExit);
    jMenuHelp.add(jMenuHelpAbout);
    jMenuBar1.add(jMenuFile);
    jMenuBar1.add(jMenuEdit);
    jMenuBar1.add(jMenuOptions);
    jMenuBar1.add(jMenuHelp);
    this.setJMenuBar(jMenuBar1);
    contentPane.add(jToolBar, BorderLayout.NORTH);
    contentPane.add(statusBar, BorderLayout.SOUTH);
    contentPane.add(jScrollPane1, BorderLayout.CENTER);
    jScrollPane1.getViewport().add(jTextArea1, null);
    jMenuOptions.add(jMenuOptionsWrap);
    jMenuOptions.add(jMenuOptionsFont);
    jMenuOptions.add(jMenuOptionsBack);
    jMenuOptions.add(jMenuOptionsText);
    jMenuEdit.add(jMenuEditCut);
    jMenuEdit.add(jMenuEditCopy);
    jMenuEdit.add(jMenuEditPaste);
    if (TextEdit.fname != "") {
       openclFile(TextEdit.fname);
    }
}

  // Open File specified in command-line
  void openclFile(String fileName) {
    try
    {
      File file = new File(fileName);
      int size = (int)file.length();
      int chars_read=0;
      FileReader in = new FileReader(file);
      char[] data = new char[size];
      while (in.ready()) {
         chars_read += in.read(data, chars_read, size - chars_read);
      }
      in.close();
      jTextArea1.setText(new String(data, 0, chars_read));
      this.currFileName=fileName;
      this.dirty=false;
      statusBar.setText("Opened "+fileName);
      updateCaption();
    }
    catch (IOException e)
    {
      statusBar.setText("Error opening "+fileName);
    }
  }

  // OK to Abandon?
  boolean oktoAbandon() {
    if (!dirty) {
       return true;
    }
    int value =  JOptionPane.showConfirmDialog(this, "Save changes?",
                              "Text Edit", JOptionPane.YES_NO_CANCEL_OPTION) ;
    if (value == JOptionPane.YES_OPTION) {
         // yes, please save changes
         return saveFile();
    }
    if (value == JOptionPane.NO_OPTION) {
         // no, abandon edits (i.e. return true without saving)
         return true;
    }
    // default is to cancel (ie:- return false)
    return false;
  }

  /**File | Exit action performed*/
  public void jMenuFileExit_actionPerformed(ActionEvent e) {
    if (oktoAbandon()) {
       System.exit(0);
    }
  }

  /**Help | About action performed*/
  public void jMenuHelpAbout_actionPerformed(ActionEvent e) {
    helpAbout();
  }

  public void helpAbout() {
    TextEditFrame_AboutBox dlg = new TextEditFrame_AboutBox(this);
    Dimension dlgSize = dlg.getPreferredSize();
    Dimension frmSize = getSize();
    Point loc = getLocation();
    dlg.setLocation((frmSize.width - dlgSize.width) / 2 + loc.x, (frmSize.height - dlgSize.height) / 2 + loc.y);
    dlg.setModal(true);
    dlg.show();
  }

  // update title bar
  void updateCaption() {
    String caption;
    if (currFileName == null) {
       caption="untitled";
    } else {
       caption=currFileName;
    }
    if (dirty) { caption=caption+" (modified)"; }
    caption="TextEdit - "+caption;
    this.setTitle(caption);
  }
  // Change background colour
  void changeBack() {
    Color newbg = jColorChooser1.showDialog(this, "Set Background Colour", jTextArea1.getBackground());
    jTextArea1.setBackground(newbg);
  }
  // Change text colour
  void changeFore() {
    Color newfg = jColorChooser1.showDialog(this, "Set Text Colour", jTextArea1.getForeground());
    jTextArea1.setForeground(newfg);
  }


  /**Overridden so we can exit when window is closed*/
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      jMenuFileExit_actionPerformed(null);
    }
  }

  void helpButton_actionPerformed(ActionEvent e) {
    helpAbout();
  }

  void saveButton_actionPerformed(ActionEvent e) {
    saveFile();
  }

  void openButton_actionPerformed(ActionEvent e) {
    openFile();
  }

  void saveAsButton_actionPerformed(ActionEvent e) {
    saveFileas();
  }

  void jMenuFileNew_actionPerformed(ActionEvent e) {
     jTextArea1.setText("");
     currFileName=null;
     dirty=false;
     updateCaption();
  }

  // Cut selected text
  void jMenuEditCut_actionPerformed(ActionEvent e) {
      jTextArea1.cut();
      dirty=true;
      updateCaption();
  }
  // Paste into document
  void jMenuEditPaste_actionPerformed(ActionEvent e) {
      jTextArea1.paste();
      dirty=true;
      updateCaption();
  }
  // Copy selected text
  void jMenuEditCopy_actionPerformed(ActionEvent e) {
      jTextArea1.copy();
  }

  // Open File
  void openFile() {
    if (!oktoAbandon()) { return; }
    jFileChooser1.showOpenDialog(this);
    String fileName = jFileChooser1.getSelectedFile().getPath();
    try
    {
      File file = new File(fileName);
      int size = (int)file.length();
      int chars_read=0;
      FileReader in = new FileReader(file);
      char[] data = new char[size];
      while (in.ready()) {
         chars_read += in.read(data, chars_read, size - chars_read);
      }
      in.close();
      jTextArea1.setText(new String(data, 0, chars_read));
      this.currFileName=fileName;
      this.dirty=false;
      statusBar.setText("Opened "+fileName);
      updateCaption();
    }
    catch (IOException e)
    {
      statusBar.setText("Error opening "+fileName);
    }
  }

    // Save File
  boolean saveFile() {
    if (currFileName == null) {
      return saveFileas();
    }
    try
    {
      File file = new File(currFileName);
      FileWriter out = new FileWriter(file);
      String text = jTextArea1.getText();
      out.write(text);
      out.close();
      this.dirty=false;
      statusBar.setText("Saved "+currFileName);
      updateCaption();
      return true;
    }
    catch (IOException e) {
     statusBar.setText("Error saving "+currFileName);
    }
    return false;
  }
  // Save file as
  boolean saveFileas() {
    jFileChooser1.showSaveDialog(this);
    String fileName = jFileChooser1.getSelectedFile().getPath();
    try
    {
      File file = new File(fileName);
      FileWriter out = new FileWriter(file);
      String text = jTextArea1.getText();
      out.write(text);
      out.close();
      this.dirty=false;
      this.currFileName=fileName;
      statusBar.setText("Saved as "+currFileName);
      updateCaption();
      return true;
    }
    catch (IOException e) {
     statusBar.setText("Error saving as "+currFileName);
    }
    return false;
  }
  // Print File
  boolean printFile() {
  try {
     File printer = new File ("/home/mmilner/lp");
     FileWriter out = new FileWriter(printer);
     String text = jTextArea1.getText();
     out.write(text);
     out.write("\f");
     out.close();
     statusBar.setText("Printed "+currFileName);
     return true;
   }
   catch (IOException e) {
     statusBar.setText("Error printing "+currFileName);
   }
   return false;
  }
  // Change Font
  void changeFont() {
     fontChooser1.setSelectedFont(jTextArea1.getFont());
   // Obtain the new Font from the FontChooser.
   // First test the return value of showDialog() to
   // see if the user pressed OK.
   if (fontChooser1.showDialog()) {
      // Set the font of jTextArea1 to the font
      // the user selected before pressing the OK button
      jTextArea1.setFont(fontChooser1.getSelectedFont());
   }
   //repaints menu after item is selected
   this.repaint();
   //Repaints text properly if some text is highlighted when font is changed.
   jTextArea1.repaint();
  }

  void jMenuFileOpen_actionPerformed(ActionEvent e) {
    openFile();
  }

  void jMenuFileSave_actionPerformed(ActionEvent e) {
    saveFile();
  }

  void jMenuSaveAs_actionPerformed(ActionEvent e) {
    saveFileas();
  }

  void jMenuOptionsFont_actionPerformed(ActionEvent e) {
    changeFont();
    statusBar.setText("Attempted to change font");
  }

  void jMenuOptionsBack_actionPerformed(ActionEvent e) {
    changeBack();
  }

  void jMenuOptionsText_actionPerformed(ActionEvent e) {
    changeFore();
  }
  // A key was pressed
  void jTextArea1_keyPressed(KeyEvent e) {
     int inspos = jTextArea1.getCaretPosition();
     int key = e.getKeyCode();
//     statusBar.setText("key = "+e.getKeyChar()+", code = "+key);
        if (key == 10) {
           jTextArea1.insert("\r", inspos);
//           statusBar.setText("You pressed enter");
        }
  }

  // Key typed
  void jTextArea1_keyTyped(KeyEvent e) {
     if (!dirty) {
        dirty=true;
        updateCaption();
     }
  }

  // Toggle word wrap (on word boundaries)
  void jMenuOptionsWrap_actionPerformed(ActionEvent e) {
     if (!wrap) {
        jTextArea1.setLineWrap(true);
        jTextArea1.setWrapStyleWord(true);
        wrap=true;
     } else {
        jTextArea1.setLineWrap(false);
        jTextArea1.setWrapStyleWord(false);
        wrap=false;
     }
  }

  void jMenuItem1_actionPerformed(ActionEvent e) {
     printFile();
  }

}