// This Source Code is in the Public Domain per: http://unlicense.org
package org.litesoft.GWT.client.widgets;

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

public interface ISizeableTabPanel {
    public void addStyleName( String pStyle );

    public void insertTab( int pBeforeIndex, String pLabelText, Widget pWidget );

    public void insertTab( int pBeforeIndex, String pLabelText, boolean pAsHTML, Widget pWidget );

    public void removeTab( int pIndex );

    public void addTab( String pLabelText, Widget pWidget );

    public void addTab( String pLabelText, boolean pAsHTML, Widget pWidget );

    public int getTabCount();

    public int getSelectedTab();

    public void selectTab( int pIndex );

    public void setError( int pIndex, boolean pError );

    class Helper {
        public static int normalizeBeforeIndex( int pIndex, ISizeableTabPanel pSource ) {
            if ( pIndex <= 0 ) // == 0 is always safe
            {
                return 0;
            }
            int zTabCount = pSource.getTabCount();
            return (pIndex <= zTabCount) ? pIndex : zTabCount;
        }

        public static boolean indexOK( int pIndex, ISizeableTabPanel pSource ) {
            return ((0 <= pIndex) && (pIndex < pSource.getTabCount()));
        }

        public static String augment( String pLabelText, boolean pErrorable ) {
            return pErrorable ? augmentWithErrorIndicator( pLabelText ) : augmentWithSpacer( pLabelText );
        }

        public static String augmentWithErrorIndicator( String pLabelText ) {
            return "<img src='" + TransparentImage.URL + "' width='13' height='12' class='tabErrorIndicator' border='0'>" + pLabelText;
        }

        public static String augmentWithSpacer( String pLabelText ) {
            return "<img src='" + TransparentImage.URL + "' width='13' height='12' border='0'>" + pLabelText;
        }
    }
}