I'm build one application that needs a request from the user. The first version of the app I made one input window myself, but I found better change to the showInputDialog since it's it's a pre-molded tool from JOptionFrame. Now I'm having problems with the event trigger; check out the code below:
SearchScreen:
public class SearchScreen extends EventSearch{
...
public SearchScreen(){
userQuery = (String) JOptionPane.showInputDialog("Type Keywords in english to be requested below:");
}
...
}
EventSearch:
public class EventSearch extends TabBuilder{
public EventSearch() {
}
public void actionPerformed(ActionEvent Ev) {
try {
System.out.println("worked");
} catch (IOException e1) {
e1.printStackTrace(); //print failure
JOptionPane.showMessageDialog(null, "FAIL");
}
};
}
TabBuilder:
public class TabBuilder implements ActionListener {
.....
}
Then I ask, How am I supposed to call an event through showInputDialog? is it possible? Who is gonna be the listener? Thanks in Advance
I found my own answer - its indeed to carry on the code the Event Search class and pull the trigger to one action like this, Instead it's better to do:
public SearchScreen(){
userQuery = (String) JOptionPane.showInputDialog("Type Keywords in english to be requested below:");
try {
//Your Action with the String
} catch (IOException e1) {
e1.printStackTrace(); //print failure
JOptionPane.showMessageDialog(null, "FAILURE");
}
}
Related
Good afternoon and hope you are doing great :)
I have method in which I have written new IRunnableWithProgress and I am getting progress bar and all process updates properly no issue at all.
My issue is I can see cancel button on progress bar dailog but after clicking on it nothing is happening. In short code inside if(monitor.isCanceled()){ sysout("Heloooooooooo") } is not executing at all.
please have a look at code sample :
public void runMappers(final EObject profile, final EObject list, final Notification notification) {
this.notification = notification;
getBroker().stopNotification();
final ProgressMonitorDialog pmd = new ProgressMonitorDialog(Display.getCurrent().getActiveShell());
IRunnableWithProgress rwp = new IRunnableWithProgress() {
#Override
public void run(IProgressMonitor monitor) throws InterruptedException {
if (mappers.get(profile) != null) {
int workload = mappers.get(profile).size();
monitor.beginTask("Loading DG list configurations", workload);
Pattern pattern = Pattern.compile("ProfileTo(.*?)ViewMapper");
for (final ProfileToDgListViewMapper mapper : mappers.get(profile)) {
Matcher matcher = pattern.matcher(mapper.toString());
if (matcher.find()) {
monitor.subTask("Loading DG list configuration section " + (matcher.group(1)));
}
mapper.mapProfile(profile, list, notification);
monitor.worked(1);
if(monitor.isCanceled()){
System.out.println("Heloooooooooo");
monitor.done();
Thread.currentThread().interrupt();
return;
}
}
}
monitor.done();
}
};
try {
pmd.run(false, true, rwp);
} catch (InvocationTargetException e) {
e.printStackTrace();
} catch (InterruptedException e) {
}
getBroker().continueNotification();
}
I tried so many things also some stackoverflow answers, suggesting to perform it with Jobs, But i am not sure how can i call my custome method(with some attributes) in the Job.
Please let me know best suggestion
Thanks in advance ..
I want to add a 'Undo' feature to my application which removes the last entered number into a field.
This is what I got so far
private void btnUndo(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
final UndoManager manager = new UndoManager();
if (evt.getActionCommand().equals("Undo")) {
try {
manager.undo();
} catch (CannotUndoException ex) {
ex.printStackTrace();
}
}
}
Any Ideas? (I have no idea if this is right or not)
Thanks
See example of UndoManager
http://www.java2s.com/Code/Java/Swing-JFC/Undomanager.htm
Java Docs :-http://docs.oracle.com/javase/6/docs/api/javax/swing/undo/UndoManager.html
I am making a gui for POP3 commands I am having a problem editing my JTextPane in the GUI outside of the initialize() method
Part of the Action Listener:
public void actionPerformed(ActionEvent e)
{
String Input = Commands.getText();
verifyUserAndPass();
if(Input.substring(0).equals("QUIT")) {
System.exit(0);
}
if(Input.substring(0,4).equals("LIST")) {
ListCommand(Input);
}
if(Input.substring(0,4).equals("STAT")) {
ListCommand(Input);
}
if(Input.substring(0,4).equals("RETR")) {
try {
RETRCommand(Input);
} catch (IOException e1) {
e1.printStackTrace();
}
}
if(Input.substring(0,4).equals("DELE")) {
Delete(Input);
}
if(Input.substring(0,4).equals("NOOP")) {
Display.setText("+OK");
}
if(Input.substring(0,4).equals("UIDL")) {
if(userEntered == true && passEntered == true) {
Display.setText("the UIDL is"+String.valueOf(ui));
ui++;
}else {
Display.setText("Please sign in first");
}
}
if(Input.substring(0,3).equals("TOP")) {
try {
TOP(Input);
} catch (IOException e1) {
e1.printStackTrace();
}
}
if(Input.substring(0,4).equals("RSET")) {
Delete(Input);
}
the verifyUserAndPass method:
public void verifyUserAndPass() {
String Input = Commands.getText();
System.out.println(Input+"randomstring");
if(Input.substring(0, 4).equals("USER")) {
try {
if(verifyUser(Input.substring(5))) {
Display.setText("+OK");
Commands.setText("");
userEntered = true;
} else {
Display.setText("-ERR");
}
} catch (IOException e1) {
e1.printStackTrace();
Display.setText("-ERR");
}
}
if(Input.substring(0, 4).equals("PASS")) {
try {
if(userEntered == true) {
if(verifyPass(Input.substring(5))) {
Display.setText("+OK");
Display.setText("Welcome, you are now logged in");
Commands.setText("");
passEntered = true;
} else {
Display.setText("-ERR");
}
} else {
Display.setText("Please enter USER first");
}
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
Commands is a JTextField,
Display is a JTextPane.
for some reason, I can edit Commands outside the ActionListener but not Display
e.g. The Display.setText under the NOOP if works but not the one in verifyUserAndPass() method
but the Commands.setText works
What am I doing wrong?
It is quite hard to answer this question without you providing more details, but I can name a common issue:
Display may not be initialized, check your program's flow and then you can see why it is not being initialized.
Moreover, please abide the Java conventions for everyone's sake. Variables and methods are typed in camelcasing. So these ones would need to be changed:
String Input to String input.
ListCommand() to listCommand().
etc. I hope you get the idea.
Sometimes the doInBackgorund() method of my SwingWorker seems not to be executed, it goes directly to the done() method without saving or printing anything on some of my clients machines, so i suppose it's a random thing , and i can't figure out why. Here 's my code :
public class saveCmdWorker extends SwingWorker<Integer, Integer> {
Order ord;
public saveCmdWorker(Order ord) {
this.ord = ord;
}
#Override
public Integer doInBackground() {
if(999 != ord.getCaissier().getIdCaissier())
saveCmd(ord); // database queries
else
JOptionPane.showMessageDialog(null,"Error",JOptionPane.WARNING_MESSAGE);
if(ord.isIsProd() == false){
try {
// print via serial port
Printer.print(ord, false, Restaurant.numCaisse);
} catch (Exception ex) {
PosO2.errorLogger.log(Level.SEVERE, "Printing error", ex);
}
}
try {
Printer.printFacture(ord, false);
if(btnDuplicata.getForeground() == Color.red)
Printer.printFacture(ord, true);
} catch (Exception ex) {
PosO2.errorLogger.log(Level.SEVERE, "Printing error", ex);
}
return 1;
}
#Override
protected void done() {
try {
btnDuplicata.setForeground(Color.black);
ARendre = 0.0;
ord.clear();
for (int j = 0; j < tab_paiement.size(); j++) {
tab_paiement.get(j).setVisible(true);
}
montantRestant.setBackground(Color.red);
} catch(Exception e) {
PosO2.errorLogger.log(Level.SEVERE, "Refresh Error", e);
}
}
}
I execute this worker via this actionlistener :
ActionListener encaissListener = new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
worker = new saveCmdWorker(cmd);
worker.execute();
}
};
I don't have any logs available so i assume no exception is caught. I saw that a JOptionPane was fired in the doInBackground()(consider as ui modification in an other thread?) but the problem exists when the application doesn't go in the else statement. Can this be the cause of my problems? I don't have this bug on my computer, it just works fine.
As per the SwingWorker documentation (http://docs.oracle.com/javase/7/docs/api/javax/swing/SwingWorker.html#execute()):
SwingWorker is only designed to be executed once. Executing a SwingWorker more than once will not result in invoking the doInBackground method twice.
So, it looks like you need to create a new instance of your subclass each time you want to run the execute method properly.
**** Please note that my question is regarding the answers in another thread. However, when I posted the question in that thread, it was deleted. So I'm reposting the question here (with a link to the exact post that I'm referring to). ****
I have a couple of questions that go along with this thread. If I have a Timer (updateTimer), which I want to cancel when the window is closing, can I put that in place of the System.out.println("Windows Closing"); statement? Or would I have to put it in the actual "View" class (I have three classes DesktopApplication.App, DesktopApplication.View, and DesktopApplication.AboutBox and the configure Window method is in the .App class).
Along that line, if I can put the updateTimer.cancel(); line in, then does this mean I can read/write from a file, and popluate textboxes also (WindowOpen event) and write the information to the file in the closing event?
What I want to do is the following: When my application starts (and the main window opens) I want to check for a configuration file. If it exists, then I want to get the username, password, tunnel ID, and IP Address from that file--and populate their respective text boxes in the main jPanel. If it doesn't exist, then I won't do anything with it.
On closing the application, I want two things to happen: 1) any UpdateTimers that are running will be cancelled (to effectively and cleanly close the application) and 2) write the username, password, tunnel ID and IP Address to the configuration file for the next run.
I've created the file in Netbeans, so the "exitMenu" is automatically generated, and there is no "close button" configured. So I need to use WindowClosing to accomplish this (or hack the "exitMenu" method in a text editor and hope it doesn't create issues with Netbeans).
I should also add that the username and password are actually MD5 hashes of the real username and password. So, while someone can possibly open the text file and read them, they'll only see something like this:
c28de38997efb893872d893982ac
3289ab83ce8f398289d938999cab
12345
192.168.2.2
Thanks, and have a great day:)
Patrick.
Edited to include information about the "Username and Password" that will be stored.
can I put that in place of the System.out.println("Windows Closing"); statement?
Yes, you can put arbitrary code in your listener
Along that line, if I can put the updateTimer.cancel(); line in, then does this mean I can read/write from a file, and popluate textboxes also (WindowOpen event) and write the information to the file in the closing event?
Yes
How I ended up accomplishing this is like this.
In my "TunnelbrokerUpdateView" class (the one that actually handles the main frame), I added the following code:
WindowListener wl = new WindowListener(){
public void windowOpened(WindowEvent e)
{
try
{
FileReader fr = new FileReader (new File("userinfo.txt"));
BufferedReader br = new BufferedReader (fr);
jTextField1.setText(br.readLine());
jPasswordField1.setText(br.readLine());
jTextField2.setText(br.readLine());
oldIPAddress = br.readLine();
br.close();
}
catch (FileNotFoundException ex) {
// Pop up a dialog box explaining that this information will be saved
// and propogated in the future.. "First time running this?"
int result = JOptionPane.showConfirmDialog((Component)
null, "After you enter your user information, this box will no longer show.", "First Run", JOptionPane.DEFAULT_OPTION);
}
catch (java.io.IOException ea)
{
Logger.getLogger(TunnelbrokerUpdateView.class.getName()).log(Level.SEVERE, null, ea);
}
}
public void windowClosing(WindowEvent e) {
updateTimer.cancel();
BufferedWriter userData;
//Handle saving the user information to a file "userinfo.txt"
try
{
userData = new BufferedWriter(new FileWriter("userinfo.txt"));
StringBuffer sb = new StringBuffer();
sb.append(jTextField1.getText());
sb.append(System.getProperty("line.separator"));
sb.append(jPasswordField1.getText());
sb.append(System.getProperty("line.separator"));
sb.append(jTextField2.getText());
sb.append(System.getProperty("line.separator"));
sb.append(oldIPAddress);
userData.write(sb.toString());
userData.close();
}
catch (java.io.IOException ex)
{
Logger.getLogger(TunnelbrokerUpdateView.class.getName()).log(Level.SEVERE, null, ex);
}
}
public void windowClosed(WindowEvent e) {
System.exit(0);
}
public void windowIconified(WindowEvent e) {}
public void windowDeiconified(WindowEvent e) {}
public void windowActivated(WindowEvent e) {}
public void windowDeactivated(WindowEvent e) {}
};
super.getFrame().addWindowListener(wl);
}
I added this into the "public TunnelbrokerUpdateView(SingleFrameApplication app)" method. So, everything works as I wanted it to. I'm sure there are better ways of incorporating the user information, but this was quick and dirty. In the future, I do plan on encrypting the data (or making it into a format that isn't readable normally), since there's a password hash involved.
Hopefully this will help someone else in the future.
(for reference, here's the entire method (including the stuff that Netbeans automatically puts in)
public TunnelbrokerUpdateView(SingleFrameApplication app) {
super(app);
initComponents();
// status bar initialization - message timeout, idle icon and busy animation, etc
ResourceMap resourceMap = getResourceMap();
int messageTimeout = resourceMap.getInteger("StatusBar.messageTimeout");
messageTimer = new Timer(messageTimeout, new ActionListener() {
public void actionPerformed(ActionEvent e) {
statusMessageLabel.setText("");
}
});
messageTimer.setRepeats(false);
int busyAnimationRate = resourceMap.getInteger("StatusBar.busyAnimationRate");
for (int i = 0; i < busyIcons.length; i++) {
busyIcons[i] = resourceMap.getIcon("StatusBar.busyIcons[" + i + "]");
}
busyIconTimer = new Timer(busyAnimationRate, new ActionListener() {
public void actionPerformed(ActionEvent e) {
busyIconIndex = (busyIconIndex + 1) % busyIcons.length;
statusAnimationLabel.setIcon(busyIcons[busyIconIndex]);
}
});
idleIcon = resourceMap.getIcon("StatusBar.idleIcon");
statusAnimationLabel.setIcon(idleIcon);
progressBar.setVisible(false);
// connecting action tasks to status bar via TaskMonitor
TaskMonitor taskMonitor = new TaskMonitor(getApplication().getContext());
taskMonitor.addPropertyChangeListener(new java.beans.PropertyChangeListener() {
public void propertyChange(java.beans.PropertyChangeEvent evt) {
String propertyName = evt.getPropertyName();
if ("started".equals(propertyName)) {
if (!busyIconTimer.isRunning()) {
statusAnimationLabel.setIcon(busyIcons[0]);
busyIconIndex = 0;
busyIconTimer.start();
}
progressBar.setVisible(true);
progressBar.setIndeterminate(true);
} else if ("done".equals(propertyName)) {
busyIconTimer.stop();
statusAnimationLabel.setIcon(idleIcon);
progressBar.setVisible(false);
progressBar.setValue(0);
} else if ("message".equals(propertyName)) {
String text = (String)(evt.getNewValue());
statusMessageLabel.setText((text == null) ? "" : text);
messageTimer.restart();
} else if ("progress".equals(propertyName)) {
int value = (Integer)(evt.getNewValue());
progressBar.setVisible(true);
progressBar.setIndeterminate(false);
progressBar.setValue(value);
}
}
});
// This will take care of Opening and Closing
WindowListener wl = new WindowListener(){
public void windowOpened(WindowEvent e)
{
try
{
FileReader fr = new FileReader (new File("userinfo.txt"));
BufferedReader br = new BufferedReader (fr);
jTextField1.setText(br.readLine());
jPasswordField1.setText(br.readLine());
jTextField2.setText(br.readLine());
oldIPAddress = br.readLine();
br.close();
}
catch (FileNotFoundException ex) {
// Pop up a dialog box explaining that this information will be saved
// and propogated in the future.. "First time running this?"
int result = JOptionPane.showConfirmDialog((Component)
null, "After you enter your user information, this box will no longer show.", "First Run", JOptionPane.DEFAULT_OPTION);
}
catch (java.io.IOException ea)
{
Logger.getLogger(TunnelbrokerUpdateView.class.getName()).log(Level.SEVERE, null, ea);
}
}
public void windowClosing(WindowEvent e) {
updateTimer.cancel();
BufferedWriter userData;
//Handle saving the user information to a file "userinfo.txt"
try
{
userData = new BufferedWriter(new FileWriter("userinfo.txt"));
StringBuffer sb = new StringBuffer();
sb.append(jTextField1.getText());
sb.append(System.getProperty("line.separator"));
sb.append(jPasswordField1.getText());
sb.append(System.getProperty("line.separator"));
sb.append(jTextField2.getText());
sb.append(System.getProperty("line.separator"));
sb.append(oldIPAddress);
userData.write(sb.toString());
userData.close();
}
catch (java.io.IOException ex)
{
Logger.getLogger(TunnelbrokerUpdateView.class.getName()).log(Level.SEVERE, null, ex);
}
}
public void windowClosed(WindowEvent e) {
System.exit(0);
}
public void windowIconified(WindowEvent e) {}
public void windowDeiconified(WindowEvent e) {}
public void windowActivated(WindowEvent e) {}
public void windowDeactivated(WindowEvent e) {}
};
super.getFrame().addWindowListener(wl);
}
Have a great day:)
Patrick.