users@woodstock.java.net

Re: autocomplete feature for textfield not working?

From: Dmitry Kushner <Dmitry.Kushner_at_Sun.COM>
Date: Wed, 02 Apr 2008 14:19:42 -0600
Please see details and sample code for configuring Woodstock Ajax functionality with JSF components ( autocomplete) at newly posted http://blogs.sun.com/dmitry/entry/configuring_ajax_functionality_in_woodstock


Dmitry Kushner wrote:
I will write and a post a stand-alone example with auto-complete. Will send the note to this alias.

autozoom wrote:
I think I made things right as explained by the documentation. The problem
here is that I don't even see any ajax call while typing, so the issue is
not on the code side I guess.

Can you explain how you got it to work please?


Bill Edwards - Sun BOS Software wrote:
  
I have been able to make it work using in my PHP test.   This was 
version 4.2.

Cathy Mucci wrote:
    
I'm not sure if this will help or not.  I received this info a few 
days back on adding autocomplete code to a test I'm working on:

From Dmitry:

Using autocomplete is 2-step process. See attachment below for 
excerpts from TLD docs, but in short autoComplete and 
autoCompleteExpression must be defined.

In order to use it, fields must be bound like this:
        autoComplete="true"
        autoCompleteExpression = "#{AutoCompleteBean.getOptions}"

where  AutoCompleteBean is
 <managed-bean>
        <description>The backing bean for the field autoComplete 
example</description>
        <managed-bean-name>AutoCompleteBean</managed-bean-name>

<managed-bean-class>autocomplete.AutoCompleteBean</managed-bean-class>
        <managed-bean-scope>session</managed-bean-scope>
    </managed-bean>


"Attribute indicating to turn on/off the autocomplete functionality of 
the TextField. Autocomplete would trigger the AJAX request to the 
component.

Autocomplete will submit the content of the text field for server side 
processing that will be processed using JSFX partial lifecycle cycle. 
Providing of autoComplete options remains responsibility of the 
developer. Specifically, autoCompleteExpression needs to be set
By default autocomplete is off."

and for autoCompleteExpression :


" Use the autoCompleteExpression to specify the method that will 
filter an autoCompleteExpression list, i.e. to produce new set of 
options to be rendered as autoComplete prompts ( see 
autoCompleteExpression) . When autoComplete mechanism is enabled ( by 
specifying autoComplete attribute), autoCompleteExpression method will 
be called using the Ajax mechanism in the background every time user 
changes the content of the field. Note that this requires 
autoCompleteExpression method to perform well. Also, it is recommended 
to limit number of options available to user as the return of this 
method - both for usability and in order to increase download speed.

The value of autoCompleteExpression must be an EL expression and it 
must evaluate to the name of a public method that is defined by 
com.sun.webui.jsf.model.AutoComplete, something like: public Options[] 
getOptions(String filter) { ... } In this example, expression would 
look like this: < webuijsf:textField autoComplete = "true" 
autoCompleteExpression ="#{AutoCompleteBean.getOptions}" 
text="#{AutoCompleteBean.text}" label = "AutoComplete" id = "tf" />

"


autozoom wrote:
      
hello,
I tried the autocomplete function in 4.2 build 5, like this:

<webuijsf:textField autoComplete="true" id="textField1" style="position:
absolute; left: 180px; top: 252px"
                        autoCompleteExpression ="#{Page1.getOptions}"/>

where
public Option[] getOptions(String filter) {
         Option[] ret = new Option[3];
                  ret[0] = new Option(1L, "uno");
         ret[1] = new Option(2L, "due");
         ret[2] = new Option(3L, "tre");
                  return ret;
}

but nothing happens when typing in the textfield; it doesn't seem to 
be a
problem of code, it just doesn't fire any ajax call when typing

what am I missing?
        
      
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