class Actions{
//declaration of the private variables used in the program
private int returnVal; //for JFileChooser
private int option; //for using it into JOptionPane
private String fileContent = null; //to get the text from the text area
private String fileName = null; //for using the name of the file
private JFileChooser jfc = new JFileChooser("."); //for using a open & save dialog
private ExampleFileFilter filter = new ExampleFileFilter(); //for filtering the file
/**
*If we want to write a new text, first we want to know if the text area is empty or not,
*second we want to kwnow if the text was saved or not.
*If the text area isn't empty & the text wasn't saved befor this time, then the program display ->
*for the user an option for saving the text in a new file or in the same file
*/
public void neW(){
/**
*if the text area isn't empty & if the text area hasn't
*a text not saved befor (fileContent != null)
*/
if(!n.getTextArea().getText().equals("") && !n.getTextArea().getText().equals(fileContent)){
/**
*here, we have 2 thing, first if the text wasn't be opened or saved befor
*second if the text was be opened or saved
*/
//if there was no file opened or saved
if(fileName == null){
/**
*this method has 3 options (1 = YES, 2 = NO, 3 = Cancel)
*this is an option pop up to the user, for saving the old text or not
*/
option = JOptionPane.showConfirmDialog(null,"Do you want to save the changes ??");
//if the user click on YES button,
//then the program will save the text & make a new text area
if(option == 0){
//to save the text into a new file
saveAs();
//to create new getTextArea() after saving the old getTextArea()
n.getTextArea().setText("");
}
//if the user click on NO button
if(option == 1){
//to create new getTextArea() without saving the old getTextArea()
n.getTextArea().setText("");
}
}
//if there was a text which was be opend or saved
else{
/**
*this method has 3 options (1 = YES, 2 = NO, 3 = Cancel)
*this is an option pop up to the user, for saving the old text or not
*/
option = JOptionPane.showConfirmDialog(null,"Do you want to save the changes ??");
/**
*if the user click on YES button,
*then the program will save the text into the old file &
*make a new text area,,,
*/
if(option == 0){
save();
//to create new getTextArea() after saving the old getTextArea()
n.getTextArea().setText("");
}
//if the user click on NO button
if(option == 1){
//to create new getTextArea() without saving the old getTextArea()
n.getTextArea().setText("");
}
}
}
/**
*if the text was be opened or saved before but wasn't be changed,
*and we want to write a new text,,, this option will be actived
*/
else{
n.getTextArea().setText("");
}
n.setTitle("Untitled - JAVA� Notepad");
}
/**
*If we want to open a new text, first we want to know if the text area
* is empty or not, second we want to kwnow if the text was saved or not.
*If the text area isn't empty & the text wasn't saved befor this time,
*then the program display for the user an option for saving the text
*in a new file or in the same file
*/
public void opeN(){
/**
*if the text area isn't empty & if the text area hasn't a text which
*not saved befor (fileContent != null)
*/
if(!n.getTextArea().getText().equals("") && !n.getTextArea().getText().equals(fileContent)){
/**
*here, we have 2 thing, first if the text wasn't be opened or saved befor
*second if the text was be opened or saved
*/
//if there was no file opened or saved
if(fileName == null){
/**
*this method has 3 options (1 = YES, 2 = NO, 3 = Cancel)
*this is an option pop up to the user, for saving the old text or not
*/
option = JOptionPane.showConfirmDialog(null,"Do you want to save the changes ??");
//if the user click on YES button,
//then the program will be saved the text & opened a new documents
if(option == 0){
//for saving the text in a new file
saveAs();
//for opening the new documents
open();
}
/**
*if the user click on NO button,
*the program will be opened the new documents
*/
if(option == 1){
//for opening the new documents
open();
}
}
//if there was a text which was be opend or saved
else{
/**
*this method has 3 options (1 = YES, 2 = NO, 3 = Cancel)
*this is an option pop up to the user, for saving the old text or not
*/
option = JOptionPane.showConfirmDialog(null,"Do you want to save the changes ??");
/**
*if the user click on YES button,
*then the program will save the text into the same file &
*open the new documents
*/
if(option == 0){
//for saving the text into the same file
save();
//for opening the new documents
open();
}
/**
*if the user click on NO button,
*the program will be opened the new documents
*/
if(option == 1){
//for opening the new documents
open();
}
}
}
/**
*if the text was be opened or saved before but wasn't be changed,
*and we want to open a new document,,, this option will be actived
*/
else{
//for opening the new documents
open();
}
}
/**
*THIS IS FOR SAVE ACTION, SaveAs ACTION has saveAs() method
*If we want to save a new text, then we want to know
*if the text was saved befor or not.
*If the text wasn't be saved befor, then we will use saveAs()
*If the text was be save befor, then we will use save()
*/
public void savE(){
/**
*if String fileName is null, then using saveAs().
*Because there was no file was be saved
*/
if(fileName == null){
saveAs();
}
/**
*if String fileName has a String (file name), then using save().
*Because we want to save the new text in the same file.
*if the user want to save the all text (old & new text) in a new file, ->
*he can presses SaveAs button (@saveAs())
*/
else{
save();
}
}
/**
*If we want to exit from the program,
*first we want to know if the text area is empty or not,
*second we want to kwnow if the text was saved or not.
*If the text area isn't empty & the text wasn't saved befor this time,
*then the program display ->
*for the user an option for saving the text in a new file or in the same file
*/
public void exiT(){
/**
*if the text area isn't empty & if the text area hasn't a text which
*not saved befor (fileContent != null)
*/
if(!n.getTextArea().getText().equals("") && !n.getTextArea().getText().equals(fileContent)){
//if there was no file opened or saved
if(fileName == null){
/**
*this method has 3 options (1 = YES, 2 = NO, 3 = Cancel)
*this is an option pop up to the user, for saving the old text or not
*/
option = JOptionPane.showConfirmDialog(null,"Do you want to save the changes ??");
/**
*if the user click on YES button,
*then the program will be saved the text & close the program
*/
if(option == 0){
//for saving the text into new file
saveAs();
//for closing the program
System.exit(0);
}
/**
*if the user click on NO button,
*then the program will be closed without save the text
*/
if(option == 1){
//for closing the program
System.exit(0);
}
}
//if there was a text which was be opend or saved
else{
/**
*this method has 3 options (1 = YES, 2 = NO, 3 = Cancel)
*this is an option pop up to the user, for saving the old text or not
*/
option = JOptionPane.showConfirmDialog(null,"Do you want to save the changes ??");
/**
*if the user click on YES button,
*then the program will be saved the text & close the program
*/
if(option == 0){
//for saving the text into the same file
save();
//for closing the program
System.exit(0);
}
/**
*if the user click on NO button,
*then the program will be closed without save the text
*/
if(option == 1){
//for closing the program
System.exit(0);
}
}
}
/**
*if the text was be opened or saved before but wasn't be changed,
*and we want to close the program. This option will be actived
*/
else{
//for closing the program
System.exit(0);
}
}
/**
*THIS IS THE WAY FOR OPENING THE TEXT FILE
*/
public void open(){
//filter the kind of files, we want only TXT file
filter.addExtension("txt");
//to set a description for the file (TXT)
filter.setDescription("TXT Documents");
//setting the FileFilter to JFileChooser
jfc.setFileFilter(filter);
returnVal = jfc.showOpenDialog(n); //to show JFileChooser
if(returnVal == JFileChooser.APPROVE_OPTION){
//to erase any text in the text area before adding new text
n.getTextArea().setText(null);
try{
//to get the name of the selected file
fileName = jfc.getSelectedFile().getPath();
//to read the selected file
Reader in = new FileReader(jfc.getSelectedFile());
//100000 is the max. char can be written in the text area
char[] buff = new char[100000];
int nch;
while((nch = in.read(buff, 0, buff.length)) != -1)
n.getTextArea().append(new String(buff, 0, nch));
//to get more text from the file if the array wasn't full
fileContent = n.getTextArea().getText();
}
catch(FileNotFoundException x){}
catch(IOException ioe){
System.err.println("I/O Error on Open");
}
}
n.setTitle(jfc.getSelectedFile().getName() + " - JAVA� Notepad");
}
/**
*THIS IS THE WAY FOR SAVING THE TEXT IN THE SAME FILE
*/
public void save(){
//initializing 'fout' to write all text in the selected file
try{
PrintWriter fout = new PrintWriter(new FileWriter(jfc.getSelectedFile()));
//for getting the text from the text area
fileContent = n.getTextArea().getText();
//using StringTokenizer for the 'fileContent' String
StringTokenizer st=new StringTokenizer(fileContent,System.getProperty("line.separator"));
while(st.hasMoreTokens()){
//write the string (text) in the selected file
fout.println(st.nextToken());
}
//closing fout
fout.close();
}
catch(IOException ioe){
System.err.println("I/O Error on Save");
}
n.setTitle(jfc.getSelectedFile().getName() + " - JAVA� Notepad");
}
/**
*THIS IS THE WAY FOR SAVING THE TEXT IN A NEW FILE
*/
public void saveAs(){
//filter the kind of files, we want only TXT file
filter.addExtension("txt");
//to set a description for the file (TXT)
filter.setDescription("TXT Documents");
//setting the FileFilter to JFileChooser
jfc.setFileFilter(filter);
returnVal = jfc.showSaveDialog(n);
if(returnVal == JFileChooser.APPROVE_OPTION){
//initializing the PrintWriter, to save the text in a new file
PrintWriter fout = null;
try{
fout = new PrintWriter(new FileWriter(jfc.getSelectedFile() + ".txt"));
//getting the text from the text area
fileContent = n.getTextArea().getText();
//getting the name of the selected file
fileName = jfc.getSelectedFile().getPath();
//using StringTokenizer for the 'fileContent' String
StringTokenizer st=new StringTokenizer(fileContent,System.getProperty("line.separator"));
while(st.hasMoreTokens()){
//write the string (text) in the selected file
fout.println(st.nextToken());
}
//closing 'fout'
fout.close();
}
catch(IOException ioe){
System.err.println ("I/O Error on Save");
}
}
n.setTitle(jfc.getSelectedFile().getName() + " - JAVA� Notepad");
}
}