InputListofValue PopUp window CANCEL button event capture ?

Question

HI All ,
Jdeveloper version 11.X.6.
i have explained the outline of issue below:
User enter some data on InpuLIstOfValue text field and click on the maginfied Glass, the pop opens and selects some data and click 'OK' ,it will display appropriately on below fields.
but if user enters the wrong data on InpuLIstOfValue text field and clicks on maginfier Glass,no results found on the popup window, so upon click of "CANCEL" button on popup window ,
is there any way to remove the old data on InpuLIstOfValue Filed ?
Basicaly i am looking for the capturing the CANCEL button event on the popUpwindow ,based on event status .
PLase let us know if any hints ?
Thanks

Answer 1

Step by step:
1. Create the converter class:
package view.converters;
import java.util.Collection;
import java.util.Collections;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.convert.Converter;
import org.apache.myfaces.trinidad.convert.ClientConverter;
import org.apache.commons.lang.StringUtils;
public class LOVConverter implements Converter, ClientConverter {
  public Object getAsObject(FacesContext facesContext, UIComponent uiComponent, String value) {
    if (StringUtils.isBlank(value)) {
      // cancel event was triggered, so do something
    return value; // if value is not an instance of String you need to convert it to its primary type (Number, Date, String, etc)
  public String getAsString(FacesContext facesContext, UIComponent uiComponent, Object value)
    if (value == null || /* value is empty in its primary type */) {
      // cancel event was triggered, so do something
    return value.toString();
  public String getClientLibrarySource(FacesContext facesContext)
    return null;
  public Collection<String> getClientImportNames()
    return Collections.emptySet();
  public String getClientScript(FacesContext facesContext, UIComponent uiComponent)
    return null;
  public String getClientConversion(FacesContext facesContext, UIComponent uiComponent)
    return null;
}2. Declare the converter in faces-config.xml:
<converter>
  <converter-id>LOVConverter</converter-id>
  <converter-class>view.converters.LOVConverter</converter-class>
</converter>3. Your inputListOfValues should look like this (see the property converter="LOVConverter"):
<af:inputListOfValues popupTitle="Search"
                      value="#{row.bindings.DepartmentId.inputValue}"
                      model="#{row.bindings.DepartmentId.listOfValuesModel}"
                      required="#{bindings.EmployeesView1.hints.DepartmentId.mandatory}"
                      columns="#{bindings.EmployeesView1.hints.DepartmentId.displayWidth}"
                      shortDesc="#{bindings.EmployeesView1.hints.DepartmentId.tooltip}"
                      converter="LOVConverter"
                      id="ilov1">After that, when the user clicks the Cancel button, both methods (getAsObject and getAsString) should be invoked, and then you would be able to reset the component value (using uiComponent parameter).
AP