Search UI and KM Property Renderer problem

Question

Hello all,
I've got some problem with Property and property renderer for it. Could anyone help to solve this one?
My property has a list of allowed values, e.g. de,en,ru,es and so on.
The problem is when I integrate my property in the Search UI in order to be able to search by Predefined Properties.
I implemented the interface ISelectionSupported and its method
public boolean isSelectionSupported() {
        return true;
Also I redefined the renderer method renderMetaProperty.
public Component renderMetaProperty(IMetaName metaName, IMetaContext rendererContext)
in order to make the drop-donw-list with allowed values list.
For example, this method
public Component renderMetaProperty(IMetaName metaName, IMetaContext rendererContext) throws WcmException {
IPropertyMap properties = rendererContext.getPropertyMap();
        IProperty currentProperty = null;
        if (properties != null)
            currentProperty = properties.get(new PropertyName(metaName.getNamespace(), metaName.getName()));
        IPropertyRendererProxy pc = rendererContext.getRendererProxy();
        IMetaValue metaValue = null;
        if (currentProperty != null) {
            metaValue = metaName.searchByProperty(currentProperty);
            if (metaValue != null)
                value = metaValue.getValue();
        // Create list values
        DropdownListBox dlb = new DropdownListBox(pc.getUniqueComponentId(metaName, null));
        DefaultListModel lm = new DefaultListModel();
        lm.setSingleSelection(true);
        dlb.setModel(lm);
        // Get allowed property values
        for (IMetaValueListIterator iterator = metaName.allowedValueIterator(rendererContext); iterator.hasNext();) {
            metaValue = iterator.next();
            if (metaValue != null && !"".equals(metaValue.getValue())) {
                loc = new Locale(metaValue.getValue());
                lm.addItem(metaValue.getValue(), loc.getDisplayName());
        dlb.setSelection(value);
        return dlb;
The dropdownlist is dysplayed correctly. But when I press "Search" button the page is refreshed and the value I've just selected in dropdown list is not remained.
I.e. the selected property value is sent on server for searching but after page reloading we get default property value (first value from drop-down-list) and user has to select necessary value over again.
It’s needed saving value between page rollbacks. And I think Search component must do it itself and sent this value in my renederer after the page reloading.
But I can't get the selected value in my property renderer, I get null.
Maybe can anyone put some thoughts about this problem?
I'll be very much appreciated for your advices.

Answer 1

Hi Sergei,
As I understood in Properties dialog the property rendering is working.
For rendering in Search dialog, the property renderer has to implement com.sapportals.wcm.control.util.ISelectionSupported interface which has just a method ).
public boolean isSelectionSupported() {
return true;
So easy )
Regards,
Adriana