ValueChanged Event

It seems the value changed event fires only when the form is posted. I have a requirement to invoke the valuechange event when user select one item from dropdown list. Is there any way to achieve this? It works When I add the following line on jsf:
onChange="this.form.submit();"
But i am not sure if it is a good solution ....... Any help on this will be appreciated.
-TT

Don't worry, you're right on track. It's different calling onChange="submit()" and clicking on the commandLink/commandButton on your form.
Could you please post the pertinent JSP form code, and the method that gets executed when the valueChangeEvent gets fired (i.e. the valueChangeListener in your managed-bean)?
From there we should be able to tell you exactly how to set up.
CowKing
PS - Keep in mind that JSF is a server-side technology and that nothing can happen until a submit takes place.

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How to update the table value in the valuechange event?

I have an input field in the datatable with the valueChangeListener
<rich:dataTable id="cart" value="#{cart.cartList}" var="item">
<h:inputText value="#{item.cost}" id="qty" valueChangeListener="#{items.updateCost}" onchange="submit()">
<h:outputText value="#{item.errorMsg}"> </h:outputText>
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How to update the table value in the valuechange event?

As you're misusing the valueChangeListener to set another input field, you need to skip the update model values phase. Otherwise the value set in the valueChangeListener will be overridden by the submitted value. You can do this by calling the FacesContext#renderResponse() inside the valueChangeListener method. This will shift the current phase immediately to the render response phase, hereby skipping the update model values and invoke application phases.

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Hi, I have a very simple test scenario for calendar component -
two textfields + one calendar. When value changed (either via manually enter or select date from popup calendar), I want to see if validate and valueChange events get fired.
( similar to this post http://developers.sun.com/jscreator/reference/code/samplecomps/2004q2/calendar/calendar_component.pdf)
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I have a message attached to calendar1 and it shows nothing.
I set break points in functions above and there is not break.
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There may be a couple of things going on here.
First, is the page being submitted?
Second, I think custom validators have to be registered. Have you registered the validator?

ValueChange event to invoke navigation rule

Hi there,
Is it possible to invoke a navigation rule from a valuechange event triggert in a dropdown list?
I like to switch page if a certain value is selected.
Any help would be greatly appreciated.
Regards Erik

You don't need the valuechangeevent for this. You are not interested in the old value. Just an onchange="submit()" and letting the action method of the bean return the navigation case is sufficient.
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</h:selectOneMenu>
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private String selectedItem; // + getter + setter
public String navigate() {
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Hi All,
I am working on ADF Application and i have a requirement where i have a valuechange event function associated with the textbox andthe requirement is like the user will enter the value in text box and he/she will press the submit button directly without tab out .I want to trigger my value change event first and if all validation goes right then it should trigger the button event but user will press the butto only once.
Please reply !!!
Urgent !!
Thanks..

public int validate(){
int result=0;
if (value == null){
//do something
result=1;
return result;
on button click call this
public String commandButton1_action() {
if(validate()!=0){
return null;
//do rest...
}

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Hi,
I have been stumped trying to figure out how to fire a valueChange event in my JTree from a keyPressed event.
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Thanks,
Corey
import javax.swing.*;
import java.awt.*;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.tree.*;
import javax.swing.event.*;
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Try this, it works for me.
// Tree Key Listener
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private void tree_KeyReleased(KeyEvent e) {
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      else {
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[/code

How to handle Valuechange events, when page bean is in request scope

Hello balusc and forum mates,
I want to know is there any good way to handle ValueChangeEvents events, when the page's bean in request scope.
My problem is, I have a page having more than 1 value change event so How can I maintain page values at backing bean. My bean is request scope, I can't change to session scope.
Please I really need it.

Hi Frank...
In my code i used almost same logic as Andrejus Baranovskis has explained in his Editable Table example...
You can refer that example to see what problem I'm facing...
http://andrejusb.blogspot.com/2007/04/create-edit-and-delete-operations-in.html
The Bean Scope in this Example is Session scope...Save button is working fine...
But as i Change the bean scope to Request scope then Save button is not working for Edit but it is working for Delete Action very well..
I want that save button should work also for Edit action in Request Scope..
Please Make me understand that why it is happened like that..
and help me to find the solution..
and Also if you have a better document to Explain the life cycle of Application in Different Bean Scope...So please provide me that Doc to me...
It would be a great help for me to understand the concept of session...
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Fizzz...

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Hi,
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<af:inputText value="#{row.PanelType}" simple="true"
required="#{bindings.VODisplayAllRegions1.attrDefs.PanelType.mandatory}"
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id="inputText2"
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Thanks in advance,
Seshu

Thank you Frank,
I have missed to mention a point above, when I am trying to update existing rows, VCL is firing as many tomes as i change the value. I user CreateInsert to create new record/row after executing this operation (i.e. CreateInsert), On entry of value for field, VCL is firing first time fetching data. but before saving data, if change value of this field VCL is not fetching data. I am able to see browser's action as mentioned by you.
Thanks in advance.
Seshu

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Hello all,
the next problem with showOneTab tag:
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Regards,
OR

Set "immediate" to false on all of the showDetailItems inside the showOneTab. It currently defaults to true (unlike all other uses of "immediate"); we may revisit that decision shortly.

How to generate an Event on Digitalnput-ValueChange?!

Guten Tag and best wishes from Berlin!
I use an EventStructure (ES) with no Timeout. One Event that is handled
by that ES is the "Control1-ValueChange"-Event generated when the user
clicks the Control1. That's easy.
Now I have a DAQ-Card with Digital Inputs and I also want the
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line.
I know I could set the timeout of the EventStructure to some ms and
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Is there another possibility?
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Stefan

Hi Anonymous,
You might want to check-out the DIO Change occurrence VIs (DIO\Advanced.) I've never used them, but it sounds promising. Hey!, occurrences are Events too!
There's the "DAQ Occurrence", a "DIO Change Occurrence", VISA Offers it's brand of "Events", we can register the Event-case for a range of [user] events. It would be nice to see NI "normalize" event-posting across different "systems" so that a single event handler could monitor everything.
Cheers.
Message Edited by Dynamik on 03-01-2006 05:31 PM
Message Edited by Dynamik on 03-01-2006 05:32 PM
When they give imbeciles handicap-parking, I won't have so far to walk!

ADF jdevloper to call a ActionListener Method in other valueChange

Hi all,
i am using JDeveloper 11g Release 1
how to call a method of type (Action Event) inside the another method of type (ValueChange Event) ?
Please give Reply soon Thanks .

I agree.
Frank Nimphius wrote:
Hi,
dont think the action method checks if the ActionEvent is null or not. So call the method like myActionEvent(null) and then in the method ensure the code doesn't rely on an existing action event. If you require an action event, then create one as in the link you got in the previous post. However, instead of queueing the event you pass it as an argument to the method diretcly
Frank

Jtable on cell changed event

How can i treat an Jtable on cell changed event, not on value changed

Do you mean cell selection changed? One way is to add a ListSelectionListener to both the table's and the table's ColumnModel's ListSelectionModels. Something likeListSelectionListener lsl = new ListSelectionListener() {
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table.getSelectionModel().addListSelectionListener(lsl);
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If that's not what you wanted to know, ask a better question.
[http://catb.org/~esr/faqs/smart-questions.html]
db

How to expose event handlers of the TextBox in a NumericUpDown?

The NumericUpDown control contains a TextBox object that I have exposed by creating a class that inherits from NUD and references the TextBox as the second control in the Base class, like this:
Public Class clsNumericUpDownExt
Inherits NumericUpDown
Private TheTextBox As TextBox = MyBase.Controls(1)
Event NewLeave()
Public ReadOnly Property TextBox As TextBox
Get
Return TheTextBox
End Get
End Property
End Class
In the form, I instantiate an object from this class and display it in a tab control on the form, like this:
Public WithEvents dynNudTime As clsNumericUpDownExt = New clsNumericUpDownExt
'In the form's Load event:
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tabTimer.Controls.Add(dynNudTime)
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Thanks!

Well, you could add a public event to the NUD class and raise the event when the text of the textbox is changed. You would need to do this for each event you want to handle from the textbox.
In this example i added a custom event that will pass the NUD control as the sender and the Text as the 2nd argument.
Public Class Form1
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Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Me.Controls.Add(nud)
End Sub
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Me.Text = TheText
End Sub
End Class
Public Class clsNumericUpDownExt
Inherits NumericUpDown
Public Event TBoxTextChanged(ByVal sender As Object, ByVal TheText As String)
Private WithEvents TheTextBox As TextBox = CType(MyBase.Controls(1), Windows.Forms.TextBox)
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RaiseEvent TBoxTextChanged(Me, TheTextBox.Text)
End Sub
End Class
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Hello all,
I am using the GenericAttributeProfile to communicate with a Bluetooth (Low Energy) radio. A problem I'm seeing is that when the data is received, it is not necessarily in the order sent. I believe the data is arriving at the receiver in order,
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private GattCharacteristic characteristic;...characteristic.ValueChanged += Characteristic_ValueChanged
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I only have 1 eventHandler per event. The problem is that when events occur, my eventHandler logs the data to console, and I see that it is out of order sometimes.
So to consolidate, my questions are
1. Are events handled in the order received?
2. Is there another mechanism for receiving notifications for Bluetooth Low Energy?
Please let me know if you do not understand my question.
Many Thanks
Thomas
2010: Q6700 3GHz; 6GB DDRII; ~ 2.7TB internal; ATI RAEDON 5770 1GB @ Stock; Elixir Keyboard; Gigabyte GM-M6800; 2 x E173FPf 2005: 2GIG RAM, 3.6Ghz P4, 2 x 200gb SATA HD 8mb cache, 256mb 9950 ATI RADEON,19" LCD Core i7 3.2GHz, 6GB DDRIII, ASUS 512MB
EN8800GT

Hello,
>>1. Are events handled in the order received?
Events are handled in the order sent, however, their listeners are not received the fired events in the order.
>>2. Is there another mechanism for receiving notifications for Bluetooth Low Energy?
From your code, it seems that you are trying to watch the change of the property value, is it right? If it is, I think the
inotifypropertychanged would be helpful. And this you are using the Generic Attribute Profile, I think the best place to asking issues regarding it is:
https://developer.bluetooth.org/Community/SitePages/Community%20Home.aspx
There should be experts who will help you better.
If I misunderstand, please let me know.
Regards.
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Whenever a valuechanged event occurs on a page containing a panelNavigation2 components the items in the navigation menu are duplicated.
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