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.googlecode.mgwt.ui.client.widget.celllist.BasicCell;
import com.googlecode.mgwt.ui.client.widget.celllist.*;

public class OptionList<T> extends AbstractOptionListWidget<T>
{
    private final CellListWithHeader<T> mListWithHeader;

    public OptionList( @NotNull E13nResolver pResolver, @Nullable SelectedListener<T> pSelectedListener )
    {
        super( pResolver, pSelectedListener );
        mListWithHeader = new CellListWithHeader<T>( new BasicCell<T>()
        {
            @Override
            public String getDisplayString( T pOption )
            {
                return DisplayObject.resolve( mResolver, pOption );
            }

            @Override
            public boolean canBeSelected( T pOption )
            {
                return isSelectable( pOption );
            }
        } );
        mListWithHeader.getCellList().addCellSelectedHandler( new CellSelectedHandler()
        {
            @Override
            public void onCellSelected( CellSelectedEvent event )
            {
                processSelectedIndex( event.getIndex() );
            }
        } );
        initWidget( mListWithHeader );
    }

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

    public OptionList<T> round()
    {
        mListWithHeader.getCellList().setRound( true );
        return this;
    }

    public OptionList<T> header( Object pHeaderTextSource )
    {
        mListWithHeader.getHeader().setText( DisplayObject.resolve( mResolver, pHeaderTextSource ) );
        return this;
    }

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

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

    @Override
    protected void optionsUpdated( @NotNull List<T> pOptions )
    {
        mListWithHeader.getCellList().render( pOptions );
    }
}