package org.litesoft.mgwt.client.widgets;

import java.util.*;

import org.litesoft.commonfoundation.annotations.*;
import org.litesoft.core.util.*;
import org.litesoft.core.util.externalization.*;

import com.google.gwt.event.dom.client.*;
import com.googlecode.mgwt.ui.client.widget.*;

public class OptionListBox<T> extends AbstractOptionListWidget<T>
{
    private final MListBox mListBox = new MListBox();

    public OptionListBox( @NotNull E13nResolver pResolver, @Nullable SelectedListener<T> pSelectedListener )
    {
        super( pResolver, pSelectedListener );
        mListBox.addChangeHandler( new ChangeHandler()
        {
            @Override
            public void onChange( ChangeEvent event )
            {
                processSelectedIndex( mListBox.getSelectedIndex() );
            }
        } );
        initWidget( mListBox );
    }

    public OptionListBox( @NotNull E13nResolver pResolver )
    {
        this( pResolver, null );
    }

    public OptionListBox<T> options( @Nullable List<T> pOptions )
    {
        setOptions( pOptions );
        return this;
    }

    public OptionListBox<T> options( @Nullable T... pOptions )
    {
        setOptions( pOptions );
        return this;
    }

    @Override
    protected void optionsUpdated( @NotNull List<T> pOptions )
    {
        mListBox.clear();
        for ( T zOption : pOptions )
        {
            mListBox.addItem( DisplayObject.resolve( mResolver, zOption ) );
        }
    }
}