TextEditor.java

// A simple text editor implemented in Java using JFrame

import java.awt.Font;
import java.awt.Toolkit;
import java.awt.Window;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowEvent;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;

import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JTextArea;


//Text editor class that is a type of JFrame
public class TextEditor extends JFrame implements ActionListener{
	//The Text Editor class owns a text area
	String Text;
	JTextArea area;
	
	File myFile;
	boolean writtenToFileAlready = false;

	public static void main(String[] args) {
		new TextEditor();
	}
	//When the program is run, a new object is made using this class
	//Constructor for a new text editor

	int size;

	public TextEditor(){
		//Tell JFrame's constructor to run
		super("Text Editor");
		setSize(700, 700);

		initialize();

		//make the JFrame visible
		setVisible(true);
	}

	private void initialize() {
		area = new JTextArea(30,20);
		add(area);
		
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		JMenuBar bar = new JMenuBar();
		setJMenuBar(bar);

		JMenu fileMenu = new JMenu("File");
		//----------------------
		String[] file = {"New","Open","Save","Save as","Quit","Print"};
		
		for(String f: file){
			JMenuItem f1 = new JMenuItem(f);

			f1.setActionCommand(f);

			f1.addActionListener(this);

			fileMenu.add(f1);
		}
		//----------------------
		JMenu editMenu = new JMenu("Edit");

		String[] edit = {"Undo","Redo","Copy","Cut","Paste", "Find"};


		for(String e: edit){
			JMenuItem e1 = new JMenuItem(e);
			e1.setActionCommand(e);
			e1.addActionListener(this);
			editMenu.add(e1);
		}
		//-----------------------
		JMenu formatMenu = new JMenu("Format");

		String[] format = {"Font","Size","Bold","Italic","Underline","Strikethrough","Superscript", "Subscript","Clear Formatting"};


		for(String fo: format){
			JMenuItem fo1 = new JMenuItem(fo);

			fo1.setActionCommand(fo);

			fo1.addActionListener(this);

			formatMenu.add(fo1);

		}

		//Make a filter menu
		JMenu filterMenu = new JMenu("Filter");

		JMenuItem removeBadWords = new JMenuItem("Remove Bad Words");
		removeBadWords.setActionCommand("bad words");
		removeBadWords.addActionListener(this);
		filterMenu.add(removeBadWords);

		JMenuItem lowercase = new JMenuItem("Lowercase");
		lowercase.setActionCommand("lowercase");
		lowercase.addActionListener(this);
		filterMenu.add(lowercase);

		JMenuItem uppercase = new JMenuItem("Uppercase");
		uppercase.setActionCommand("uppercase");
		uppercase.addActionListener(this);
		filterMenu.add(uppercase);

		JMenuItem shakesperian = new JMenuItem("Shakesperian");
		shakesperian.setActionCommand("Shakesperian");
		shakesperian.addActionListener(this);
		filterMenu.add(shakesperian);

		JMenuItem troll = new JMenuItem("Remove Trolling");
		troll.setActionCommand("troll");
		troll.addActionListener(this);
		filterMenu.add(troll);

		createMenuItem("Remove Insults");
		filterMenu.add("Remove Insults");


		bar.add(fileMenu);
		bar.add(editMenu);
		bar.add(formatMenu);
		bar.add(filterMenu);
	}

	public JMenuItem createMenuItem(String name){
		JMenuItem item = new JMenuItem(name);
		item.setActionCommand(name);
		item.addActionListener(this);
		return item;
	}

	public void openFile(){

		JFileChooser chooser = new JFileChooser();
		int result = chooser.showOpenDialog(this);
		if(result == JFileChooser.APPROVE_OPTION){
			File f = chooser.getSelectedFile();
			try {
				String content = ("");
				Scanner s = new Scanner(f);
				//While there is another line of input, append a line of input
				while(s.hasNextLine()){
					//\n adds a new line
					content = content + "\n" + s.nextLine();
				}
				area.setText(content);
			} catch (FileNotFoundException e) {
				System.out.println("Not a file.");
				//e.printStackTrace();
			}
		}


	}



	public void saveFile(){
		JFileChooser chooser = new JFileChooser();
		int result = chooser.showSaveDialog(this);
		if(!writtenToFileAlready){
			result = chooser.showSaveDialog(this);
		}
		
		if(result == JFileChooser.APPROVE_OPTION){
			File file = chooser.getSelectedFile();

			// if file doesnt exists, then create it
			if (!file.exists()) {
				try {
					file.createNewFile();
					FileWriter fw = new FileWriter(file.getAbsoluteFile());
					BufferedWriter bw = new BufferedWriter(fw);
					bw.write(area.getText());
					bw.close();
					writtenToFileAlready = true;
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}



		}
	}

	public void saveFileAs(){
		JFileChooser chooser = new JFileChooser();
		int result = chooser.showSaveDialog(this);
		if(result == JFileChooser.APPROVE_OPTION){
			File file = chooser.getSelectedFile();

			// if file doesn't exists, then create it
				try {
					FileWriter fw = new FileWriter(file.getAbsoluteFile());
					BufferedWriter bw = new BufferedWriter(fw);
					bw.write(area.getText());
					bw.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			



		}

	}

	@Override
	public void actionPerformed(ActionEvent e) {
		System.out.println(e.getActionCommand());

		if(e.getActionCommand().equals("Cut")) {
			System.out.println("foo");
			Cut();
		}
		
		if(e.getActionCommand().equals("New")) {
			new TextEditor();
		}
		
		if(e.getActionCommand().equals("Save as")){
			saveFileAs();
		}

		if(e.getActionCommand().equals("Open")){
			openFile();
		}

		if(e.getActionCommand().equals("Save")){
			saveFile();
		}
		if(e.getActionCommand().equals("Quit")){
			quit();
		}

		if(e.getActionCommand().equals("Print")){
			
		}
		
		/*if(e.getActionCommand().equals("Undo")){
			Undo();
		}*/
		
		if(e.getActionCommand().equals("Copy")) {
			Copy();
		}
		
		if(e.getActionCommand().equals("Paste")){
			Paste();
		}
		
		
		if(e.getActionCommand().equals("Font")){
			Font();
		}

		if(e.getActionCommand().equals("Size")){
			Size();
		}

		if(e.getActionCommand().equals("bad words")){
			removeBadWords();
		}
		if(e.getActionCommand().equals("lowercase")){
			lowercase();
		}
		if(e.getActionCommand().equals("uppercase")){
			uppercase();
		}
		if(e.getActionCommand().equals("Shakesperian")){
			Shakesperian();
		}
		if(e.getActionCommand().equals("troll")){
			Troll();
		}
		if(e.getActionCommand().equals("Remove Insults")){
			Insults();
		}

	}

	private void Cut() {
		System.out.println("test");
		String content = area.getText();
		//System.out.println(area.getText());
		//content = area.getSelectedText();
		Text = (area.getSelectedText());
		if (Text != null && content != null) {
			if (content.endsWith(area.getSelectedText())) {
				// caret at the back
			}
			else {
				// caret at the front
			}
			content = content.substring(0, area.getCaretPosition()) + content.substring(area.getCaretPosition() + Text.length());
			content = content.replaceAll(area.getSelectedText(),"");
			System.out.println(area.getSelectedText());
			area.setText(content);
		}
	}

	/*private void Undo() {
		
	}*/

	

	private void Copy() {
		Text = (area.getSelectedText());
		
	}
	
	private void Paste() {
		area.setText(Text);
	}

	

	private void quit() {
		  WindowEvent wev = new WindowEvent(this, WindowEvent.WINDOW_CLOSING);
          Toolkit.getDefaultToolkit().getSystemEventQueue().postEvent(wev);
	}

	private void Insults() {
		String content = area.getText();
		content = content.replaceAll("\\b(\\w+)\\bis\\b(\\w+)\\b","$1 is not  $2");
		area.setText(content);
	}

	private void Font() {
		String font = JOptionPane.showInputDialog("What font?");
		Font f = new Font(font, 0, size);

		area.setFont(f);
	}
	private void Size() {
		String input = JOptionPane.showInputDialog("What size?");
		int s = Integer.parseInt(input);
		Font f = new Font("Arial", 0, s);
		size = s;

		area.setFont(f);
	}
	private void removeBadWords() {
		//Get Whatever is in the text area
		String content = area.getText();
		//Mess with it
		//the (?i) makes something case insensitive
		content = content.replaceAll("(?i)\\bdarn\\b","dang it");
		content = content.replaceAll("(?i)\\bheck\\b ","hoo haa");
		content = content.replaceAll("(?i)\\bshoot\\b ","hoot");


		//Put it back in
		area.setText(content);
	}

	private void lowercase() {
		//Get Whatever is in the text area
		String content = area.getText();
		//Mess with it
		content = content.toLowerCase();
		//Put it back in
		area.setText(content);
	}

	private void uppercase() {
		//Get Whatever is in the text area
		String content = area.getText();
		//Mess with it
		content = content.toUpperCase();

		//Put it back in
		area.setText(content);
	}

	private void Shakesperian() {
		//Get Whatever is in the text area
		String content = area.getText();
		//Mess with it
		//the (?i) makes something case insensitive
		content = content.replaceAll("(?i)\\byou\\b"," thou ");
		content = content.replaceAll("(?i)\\byour\\b "," thy ");
		content = content.replaceAll("(?i)\\bdo\\b "," doth ");
		content = content.replaceAll("(?i)\\bhas\\b "," hath ");
		content = content.replaceAll("(?i)\\bare\\b","art");


		//Put it back in
		area.setText(content);
	}

	//content = content.replaceAll("tr(ol)+","go away"); checks if the ol repeats and replaces trol and trolol...
	private void Troll() {
		//System.out.println("foo");
		//Get Whatever is in the text area
		String content = area.getText();
		//Mess with it
		//the (?i) makes something case insensitive
		content = content.replaceAll("(?i)\\btr(ol)+\\b","Go away!");
		content = content.replaceAll("(?i)\\btroll\\b ","Go away!");
		content = content.replaceAll("(?i)\\b(ha)+\\b ","Haha");
		content = content.replaceAll("(?i)\\bha+ha+\\b ","Haha");



		//Put it back in
		area.setText(content);
	}	





}