package com.temp.client.foundation.widget;

import com.google.gwt.user.client.ui.*;

/**
 * LeftRightPanel is basically a Single Row Table that is 100% wide that only
 * supports a Left aligned widget and a Right aligned Widget.
 *
 * @author georgs
 */
public class LeftRightPanel extends Composite {

    public LeftRightPanel( Widget left, Widget right ) {
        String Id = HTMLPanel.createUniqueId();
        String leftId = "left-" + Id;
        String rightId = "right-" + Id;
        HTMLPanel htmlPanel = new HTMLPanel( "<table border=0 cellpadding=0 cellspacing=0 width='100%'><tr>" + //
                                             "<td id='" + leftId + "' align='left' valign='middle'></td>" + //
                                             "<td id='" + rightId + "' align='right' valign='middle'></td>" + //
                                             "</tr></table>" );
        htmlPanel.add( deNull( left ), leftId );
        htmlPanel.add( deNull( right ), rightId );
        initWidget( htmlPanel );
    }

    public LeftRightPanel style( String className ) {
        addStyleName( className );
        return this;
    }

    private Widget deNull( Widget widget ) {
        if ( widget == null ) {
            widget = new Spacer( "1px", "1px" );
        }
        return widget;
    }
}