asked on

Help with a method

Hi everyone thanks for all your help. How would I get the method below into:
else if (command.equals("fnew")) { Code below)

private void clear ()
{
int count = getComponentCount () ;
Component temp ;

for ( int i = 0 ; i < count ; i ++ )
{
temp = getComponent ( i ) ;

if ( temp instanceof JTextField )
( ( JTextField ) temp ).setText ( "" ) ;

else if ( temp instanceof JCheckBox )
( ( JCheckBox ) temp ).setSelected ( false ) ;

} // end for

} // end of clear ()

Call this clear () method wherever you want to.
}

public void actionPerformed(ActionEvent e) {
String command = e.getActionCommand();
if (command.equals("quit")) {
YesNoDialog d = new YesNoDialog(this, "Really Quit?",
"Are you sure you want to quit?",
"Yes", "No", null);
d.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (e.getActionCommand().equals("yes")) System.exit(0);
}
});
d.show();
}
else if (command.equals("fnew")) {

}
else if (command.equals("open")) {
FileDialog d = new FileDialog(this, "Open File", FileDialog.LOAD);
d.show(); // display the dialog and block until answered
d.dispose();
}
else if (command.equals("save")) {
FileDialog d = new FileDialog(this, "Save File", FileDialog.LOAD);
d.show(); // display the dialog and block until answered
d.dispose();
}
else if (command.equals("about")) {
InfoDialog d = new InfoDialog(this, "About",
"This is Training Arts Program\n" +
"Copyright (c) 2004 Minor & Associates");
d.show();
}
}

mmuruganandam

Directly start off by opening the TextArea.

When closing the window and/or when save is called....

FileDialog d = new FileDialog(this, "Save File", FileDialog.LOAD);
d.show(); // display the dialog and block until answered

Regards,
Muruga

Drop_of_Rain

ASKER

You missed what I was trying to say. I need to get the clear method into the (command.equals("fnew")) { so I can clear all of the textlabels and ckeckboxs.

mmuruganandam

           List list = new ArrayList();
            Component temp;
            Container container = null;

            int count = getComponentCount();

            do
            {
                  if (list.size() > 0)
                  {
                        container = (Container)list.remove(0);
                        count = container.getComponentCount();
                  }

                  for (int i = 0; i < count; i++)
                  {
                        if (container != null)
                        {
                              temp = container.getComponent(i);
                        }
                        else
                        {
                              temp = getComponent(i);
                        }

                        if (temp instanceof JTextField)
                        {
                              ((JTextField) temp).setText("");
                        }
                        else if (temp instanceof JCheckBox)
                        {
                              ((JCheckBox) temp).setSelected(false);
                        }
                        else if (temp instanceof Container)
                        {
                              list.add(temp);
                              continue;
                        }
                  }
            }
            while (list.size() > 0);

What is the main wrapper of your class
Is it is frames or panel.

Then it will work

Mayank S

Drop_of_Rain, you need to just call the method:

public class .... // the same class which has the actionPerformed () method
{
private void clear ()
{
int count = getComponentCount () ;
Component temp ;

for ( int i = 0 ; i < count ; i ++ )
{
temp = getComponent ( i ) ;

if ( temp instanceof JTextField )
( ( JTextField ) temp ).setText ( "" ) ;

else if ( temp instanceof JCheckBox )
( ( JCheckBox ) temp ).setSelected ( false ) ;

} // end for

} // end of clear ()

public void actionPerformed ( ActionEvent ae )
{
.... // your existing code

else if (command.equals("fnew")) {
clear () ;
}

.... // your existing code

} // end of actionPerformed ()

} // end of class

ASKER CERTIFIED SOLUTION

Mayank S

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mmuruganandam

That's enough.

Keep the clear() method as private in your class. Then call that method in this conditional check.

Drop_of_Rain

ASKER

Thanks I thought that, but I am just so unsure of myself at this point, I feel intimidated. This is the first program I have every writen. It is way over my head for a first. I learn best by example, so I just went for it. I emailed you something.

Mayank S

>> I learn best by example, so I just went for it

Good. You should do that.

>> I emailed you something.

To me? I didn't get anything? Moreover, where did you get my e-mail ID from?

Mayank S

As a word of advice, generally, it is better to compare the source of the event rather than the action-command. Instead of doing:

>> String command = e.getActionCommand();
>> if (command.equals("quit")) {

You should do:

Object source = e.getSource () ;

if ( source == quitMenuItem ) {

- and so on....

Drop_of_Rain

ASKER

mayankeagle

It wasn't your email ID sorry. Thanks for the advice.