Really ignorant TextField (AWT) question from an idiot.

[C. Armour]

Help me, I'm suffering!

Situation: I have a load() function which loads a bunch
of TextFields with values. There are TextListeners
registered for each of these TextFields. Thus, changing the
text in any of them fires off a TextEvent, even if done
programmaticall y (by means of setText()).

The problem: I need all the various TextEvents fired off
during the load operation (as a result of using TextField.setTe xt())
to be handled BEFORE the load() function completes. In other words,
load() must hang around waiting for all these events to have been
handled by somehow blocking on a state variable.

Some code:

public class Stupid extends Something implements TextListener
{
TextField lname = new TextField();
TextField fname = new TextField();

public Stupid()
{
lname.setName(" LNAME");
fname.setName(" FNAME");

lname.addTextLi stener(this);
fname.addTextLi stener(this);

load();
}

public void textValueChange d(TextEvent e)
{
System.out.prin tln(paramString () + ": " + e.getSource().t oString());
}

public void load()
{
System.out.prin tln("LOADING... ");

lname.setText(" Quixote");
fname.setText(" Don");

System.out.prin tln("LOADED.");
}
}

Some output:

LOADING...
LOADED.
TEXT_VALUE_CHAN GED: java.awt.TextFi eld[LNAME,116,142,2 30x31,invalid,t ext=Quixote,edi table,selection =0-0]
TEXT_VALUE_CHAN GED: java.awt.TextFi eld[FNAME,116,173,2 30x31,invalid,t ext=Don,editabl e,selection=0-0]
What I want:

LOADING...
TEXT_VALUE_CHAN GED: java.awt.TextFi eld[LNAME,116,142,2 30x31,invalid,t ext=Quixote,edi table,selection =0-0]
TEXT_VALUE_CHAN GED: java.awt.TextFi eld[FNAME,116,173,2 30x31,invalid,t ext=Don,editabl e,selection=0-0]
LOADED.

Any ideas? I'm going mad here!

[Gregory A. Swarthout]

cd*@milhouse.sg iscpq.com (C. Armour) wrote in message news:<86******* *****@milhouse. sgiscpq.com>...

Help me, I'm suffering!

Situation: I have a load() function which loads a bunch
of TextFields with values. There are TextListeners
registered for each of these TextFields. Thus, changing the
text in any of them fires off a TextEvent, even if done
programmaticall y (by means of setText()).

The problem: I need all the various TextEvents fired off
during the load operation (as a result of using TextField.setTe xt())
to be handled BEFORE the load() function completes. In other words,
load() must hang around waiting for all these events to have been
handled by somehow blocking on a state variable.

Some code:

public void load()
{
System.out.prin tln("LOADING... ");

lname.setText(" Quixote");
fname.setText(" Don");

System.out.prin tln("LOADED.");

Change this line to:

SwingUtilities. invokeAndWait(n ew Runnable() {
public void run() {
System.out.prin tln("LOADED.");
}
});

This will ensure that the Event Dispatching Thread has processed all
pending events prior to printing out the text. invokeLater will also
work in this case, since you don't have anything after the second
print that needs to happen synchronously.

Greg

[C. Armour]

>>>>> "Gregory" == Gregory A Swarthout <gr******@xmiss ion.com> writes:

Gregory> Change this line to:

Gregory> SwingUtilities. invokeAndWait(n ew Runnable() { public
Gregory> void run() { System.out.prin tln("LOADED."); } });

Gregory> This will ensure that the Event Dispatching Thread has
Gregory> processed all pending events prior to printing out the
Gregory> text. invokeLater will also work in this case, since you
Gregory> don't have anything after the second print that needs to
Gregory> happen synchronously.

Hey, thanks. That's exactly what I was looking for.

Of course, I'm not using Swing, but it should work, right?
cda