Hi Janek Yes, I thought that this was happening.
My requirement is this: I use the value changed event to see that the user has modified a text field. This should only be done when the focus leaves the item so that validation can be performed. I would also like to know when the user types value into the item. This way I can set mandatory flags on the screen. I don't want to send key listeners to the server for obvious performance reasons. I therefore came up with the idea to send just two events from the client to the server, when the value changes from null/empty to a value or when the value changes from a value to null/empty. This way I need only send two events to the client. Paul -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Janak Mulani Sent: Dienstag, 2. Februar 2010 17:31 To: [email protected] Subject: RE: [ULC-developer] Text Field and Value changed event Hi Paul, > ValueChanged event. The ValueChanged event should only be > sent to the client when focus leaves the item, which is not happening. We fixed the following bug: https://www.canoo.com/jira/browse/UBA-7287 If while editing a text field there is a roundtrip (like your custom event), the textfield flushes the data and since that changes the value on the server side it follows that the valueChanged event is fired. Can you tell me what is your exact requirement? May be I can suggest an alternative. BTW, we will look into your premium list problem. Thanks and regards, Janak ----------------------------------------- Janak Mulani email: [email protected] url: http://www.canoo.com Beyond AJAX - Java Rich Internet Applications http://www.canoo.com/ulc ----------------------------------------- > -----Original Message----- > From: Paul Harrison [mailto:[email protected]] > Sent: Tuesday, February 02, 2010 4:09 PM > To: '[email protected]' > Subject: RE: [ULC-developer] Text Field and Value changed event > > Dear Janak > > Unfortunately the error is still there. I have changed my > code to use the code example you give below. I get the event > sent to the server as expected, but the problem exists that > when the ActionEvent comes to the server, so does the > ValueChanged event. The ValueChanged event should only be > sent to the client when focus leaves the item, which is not happening. > > Janka, I have sent the reply originally to the Developer List > from my work account ([email protected]) but I got the > standard reply indicating that I have not yet registered. > > Paul > > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Janak Mulani > Sent: Dienstag, 2. Februar 2010 11:34 > To: [email protected] > Subject: RE: [ULC-developer] Text Field and Value changed event > > > Hi Paul, > > Firstly we have updated our records and your should be able to post on > premium list. > > Secondly, it seems that you have created your own event > category. Please > see section 4.3 of ULC Extension Guide that describes > creating a custom > event type. > > From your code snippets, I have created a sample (see below) > which has the > key and mouse listeners on the client side but which fires an > ActionEvent > (one of the predefined event categories). It works fine. > > Thanks and regards, > > Janak > > ----------------------------------------- > Janak Mulani > > email: [email protected] > url: http://www.canoo.com <http://www.canoo.com/> > > Beyond AJAX - Java Rich Internet Applications > > http://www.canoo.com/ulc > ----------------------------------------- > ________________________________ > > From: [email protected] > [mailto:[email protected]] On Behalf Of > Paul Harrison > Sent: Monday, February 01, 2010 11:54 AM > To: '[email protected]' > Subject: [ULC-developer] Text Field and Value changed event > > Hi all > > I have a ULCTextField that I have created an extension to its > client couterpart, the UITextField. > > My UITextfield extends the standard one because I need > three extra > events. A mouse double click and a value from and value to > null event. > > The double click listener is working just fine but I am having > problems with my valueFromNullEvent and the valueToNullEvent. > The events > themselves work just fine, the only problem is, is that when I send my > event to the server, it also invokes the ValueChangedEvent. The > ValueChangedEvent normally only gets fired once focus leaves > the field. I > have not left the field and I have no server code that would > force a focus > changed. > > my client code is as follows: > > protected void postInitializeState() > { > super.postInitializeState(); > > _borderManager = new BorderManager(this); > getBasicTextField().addKeyListener(new KeyListener() > { > public void keyTyped(KeyEvent e) > { > if (Character.isLetterOrDigit(e.getKeyChar())) > { > if (getBasicTextField().getText() == null || > getBasicTextField().getText().trim().length() == 0) > { > > fireEventULC(SPRINT_VALUE_CHANGED_FROM_NULL_EVENT, > SPRINT_VALUE_CHANGED_FROM_NULL_EVENT, new Object[] {}); > } > } > } > > public void keyReleased(KeyEvent e) > { > if (getBasicTextField().getText() == null || > getBasicTextField().getText().length() == 0) > { > fireEventULC(SPRINT_VALUE_CHANGED_TO_NULL_EVENT, > SPRINT_VALUE_CHANGED_TO_NULL_EVENT, new Object[] {}); > } > } > > public void keyPressed(KeyEvent e) > { > } > }); > > > > getBasicTextField().addMouseListener(new MouseListener() > { > public void mouseClicked(MouseEvent e) > { > if (e.getClickCount() == 2) > { > fireEventULC(SPRINT_DOUBLE_CLICK_EVENT, > "doubleClicked", new Object[] {}); > } > } > > .... > > .... > > .... > > > > It seems to me that the KexEvents are logged by ULC to > be able to > know if a value has changed. Because I have my own key listener which > fires its own event, it seems to get in the way of the > valuechanged event. > I tried printing out the isValueChangedEventPending() value but it is > false. > > Could you please tell me if I am doing something wrong > or if this > is standard behaviour. If it is standard behaviour then the > Java Doc of > the ValueChangedEvent is incorrect and I would be very grateful for a > workaround. > > Kins regards > > Paul Harrison > -------------------------------- > > > import java.awt.event.KeyEvent; > import java.awt.event.KeyListener; > import java.awt.event.MouseAdapter; > import java.awt.event.MouseEvent; > > import com.ulcjava.base.application.AbstractApplication; > import com.ulcjava.base.application.ULCBoxPane; > import com.ulcjava.base.application.ULCContainer; > import com.ulcjava.base.application.ULCFrame; > import com.ulcjava.base.application.ULCTextField; > import com.ulcjava.base.application.event.ActionEvent; > import com.ulcjava.base.application.event.IActionListener; > import com.ulcjava.base.application.event.IValueChangedListener; > import com.ulcjava.base.application.event.ValueChangedEvent; > import com.ulcjava.base.client.UITextField; > import com.ulcjava.base.development.DevelopmentRunner; > import com.ulcjava.base.shared.UlcEventCategories; > > > public class TextFieldWithKeyMouseListener extends > AbstractApplication { > > public void start() { > ULCFrame frame = new > ULCFrame("TextFieldWithKeyMouseListener"); > frame.setDefaultCloseOperation(ULCFrame.TERMINATE_ON_CLOSE); > frame.getContentPane().add(createView()); > frame.setSize(200, 200); > frame.setVisible(true); > > } > > public ULCContainer createView() { > ULCBoxPane hBox = new ULCBoxPane(true); > > TextFieldActionListener actionListener = new > TextFieldActionListener(); > > ULCTextField textField = new MyULCTextField(10); > textField.addActionListener(actionListener); > textField.addValueChangedListener(new > IValueChangedListener() { > public void valueChanged(ValueChangedEvent event) { > System.out.println(".valueChanged()"); > } > }); > > ULCTextField textField2 = new ULCTextField(10); > textField2.addActionListener(actionListener); > > hBox.add(textField); > hBox.add(textField2); > return hBox; > } > > private class TextFieldActionListener implements IActionListener { > public void actionPerformed(ActionEvent event) { > System.out.println("Action event : " + > event.getActionCommand()); > } > } > > public static void main(String[] args) { > > DevelopmentRunner.setApplicationClass(TextFieldWithKeyMouseLis > tener.class) > ; > DevelopmentRunner.main(args); > } > > public static class MyULCTextField extends ULCTextField { > public MyULCTextField(String string) { > super(string); > } > > public MyULCTextField(int i) { > super(i); > } > > protected String typeString() { > return MyUITextField.class.getName(); > } > } > > public static class MyUITextField extends UITextField { > > @Override > protected void postInitializeState() { > super.postInitializeState(); > getBasicTextField().addKeyListener(new KeyListener() { > public void keyTyped(KeyEvent e) { > if (Character.isLetterOrDigit(e.getKeyChar())) { > if (getBasicTextField().getText() == null || > getBasicTextField().getText().trim().length() == 0) { > > fireEventULC(UlcEventCategories.ACTION_EVENT_CATEGORY, > "actionPerformed", > new Object[] { > > "SPRINT_VALUE_CHANGED_TO_NULL_EVENT", > new Integer(0) }); > // > fireEventULC(SPRINT_VALUE_CHANGED_FROM_NULL_EVENT, > SPRINT_VALUE_CHANGED_FROM_NULL_EVENT, > // new Object[] {}); > } > } > } > > public void keyReleased(KeyEvent e) { > if (getBasicTextField().getText() == null || > getBasicTextField().getText().length() == 0) { > > fireEventULC(UlcEventCategories.ACTION_EVENT_CATEGORY, > "actionPerformed", > new Object[] { > > "SPRINT_VALUE_CHANGED_TO_NULL_EVENT", new > Integer(0) }); > // > fireActionPerformedULC(event.getActionCommand(), > getCurrentModifiers()); > // > fireEventULC(SPRINT_VALUE_CHANGED_TO_NULL_EVENT, > SPRINT_VALUE_CHANGED_TO_NULL_EVENT, > // new Object[] {}); > } > } > > public void keyPressed(KeyEvent e) { > } > }); > > getBasicTextField().addMouseListener(new MouseAdapter() { > public void mouseClicked(MouseEvent e) { > if (e.getClickCount() == 2) { > > > fireEventULC(UlcEventCategories.ACTION_EVENT_CATEGORY, > "actionPerformed", > new Object[] { > "doubleClicked", new Integer(0) }); > // fireEventULC(SPRINT_DOUBLE_CLICK_EVENT, > "doubleClicked", new Object[] {}); > } > } > > }); > } > } > } > _______________________________________________ > ULC-developer mailing list > [email protected] > http://lists.canoo.com/mailman/listinfo/ulc-developer > _______________________________________________ ULC-developer mailing list [email protected] http://lists.canoo.com/mailman/listinfo/ulc-developer _______________________________________________ ULC-developer mailing list [email protected] http://lists.canoo.com/mailman/listinfo/ulc-developer
