package org.litesoft.GWT.client.widgets.nonpublic;

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

import org.litesoft.uispecification.*;

public class ApplyFont
{
    public static Widget to( UiFont pUiFont, Widget pWidget )
    {
        if ( (pWidget != null) && (pUiFont != null) )
        {
            to( pUiFont, pWidget.getElement() );
        }
        return pWidget;
    }

    public static void to( UiFont pUiFont, Element pElement )
    {
        if ( (pElement != null) && (pUiFont != null) )
        {
            set( pElement, "fontFamily", pUiFont.getFamily(), ",courier" );
            set( pElement, "color", pUiFont.getColor() );
            set( pElement, "fontSize", pUiFont.getSize() );
            set( pElement, "fontStyle", pUiFont.getStyle() );
            set( pElement, "fontWeight", pUiFont.getWeight() );
            set( pElement, "textDecoration", pUiFont.getDecoration() );
        }
    }

    public static String toHtmlStyle( UiFont pUiFont )
    {
        if ( pUiFont != null )
        {
            StringBuilder sb = new StringBuilder();
            set( sb, "font-family", pUiFont.getFamily(), ",courier" );
            set( sb, "color", pUiFont.getColor() );
            set( sb, "font-size", pUiFont.getSize() );
            set( sb, "font-style", pUiFont.getStyle() );
            set( sb, "font-weight", pUiFont.getWeight() );
            set( sb, "text-decoration", pUiFont.getDecoration() );
            if ( sb.length() != 0 )
            {
                return " style=\"" + sb.toString() + "\"";
            }
        }
        return "";
    }

    private static void set( StringBuilder pSB, String pAttributeName, String pValue,
                             String pAdditionalIfNotNull )
    {
        if ( pValue != null )
        {
            set( pSB, pAttributeName, pValue + pAdditionalIfNotNull );
        }
    }

    private static void set( StringBuilder pSB, String pAttributeName, String pValue )
    {
        if ( pValue != null )
        {
            pSB.append( pAttributeName ).append( ':' ).append( pValue ).append( ';' );
        }
    }

    private static void set( Element pElement, String pAttributeName, String pValue,
                             String pAdditionalIfNotNull )
    {
        if ( pValue != null )
        {
            set( pElement, pAttributeName, pValue + pAdditionalIfNotNull );
        }
    }

    private static void set( Element pElement, String pAttributeName, String pValue )
    {
        if ( pValue != null )
        {
            DOM.setStyleAttribute( pElement, pAttributeName, pValue );
        }
    }
}