MultilingueFieldTag.java

/**
 * Copyright (C) 2008-2010, Squale Project - http://www.squale.org
 *
 * This file is part of Squale.
 *
 * Squale is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or any later version.
 *
 * Squale is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Squale.  If not, see <http://www.gnu.org/licenses/>.
 */
/*
 * Cr�� le 10 janv. 05
 *
 * Pour changer le mod�le de ce fichier g�n�r�, allez � :
 * Fen�tre>Pr�f�rences>Java>G�n�ration de code>Code et commentaires
 */
package org.squale.welcom.taglib.multilingue;

import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.Locale;

import javax.servlet.jsp.JspException;

import org.apache.commons.beanutils.BeanUtils;
import org.apache.struts.Globals;
import org.apache.struts.util.ResponseUtils;
import org.squale.welcom.outils.LocaleUtil;
import org.squale.welcom.outils.WelcomConfigurator;
import org.squale.welcom.taglib.field.FieldTag;
import org.squale.welcom.taglib.field.util.LayoutUtils;


/**
 * @author M327837 Pour changer le mod�le de ce commentaire de type g�n�r�, allez � :
 *         Fen�tre>Pr�f�rences>Java>G�n�ration de code>Code et commentaires
 */
public class MultilingueFieldTag
    extends FieldTag
{

    /**
     * 
     */
    private static final long serialVersionUID = -921691760028293864L;

    /**
     * @see org.squale.welcom.taglib.field#doStartTag()
     */
    public int doStartTag()
        throws JspException
    {
        if ( getType().equalsIgnoreCase( "TEXTAREA" ) || getType().equalsIgnoreCase( "TEXT" ) )
        {
            return EVAL_PAGE;
        }
        else
        {
            throw new JspException( "Multilingue impossible pour ce type ! " );
        }
    }

    /**
     * @see org.squale.welcom.taglib.field#doEndTag()
     */
    public int doEndTag()
        throws JspException
    {

        // Recuperation de l'object
        final WILocaleString bean = (WILocaleString) LayoutUtils.getBeanFromPageContext( pageContext, name, property );

        if ( !( bean instanceof WILocaleString ) )
        {
            throw new JspException( "Bean should be type of WILocaleString" );
        }

        // display the label
        StringBuffer buffer = new StringBuffer();
        beginField( buffer );
        ResponseUtils.write( pageContext, buffer.toString() );
        final ArrayList locales = LocaleUtil.getAvailableLocales();
        final String localeSession =
            ( (Locale) pageContext.getSession().getAttribute( Globals.LOCALE_KEY ) ).getLanguage();
        if ( !locales.isEmpty() )
        {
            final Iterator iterLocale = locales.iterator();
            while ( iterLocale.hasNext() )
            {
                final String curLocale = (String) iterLocale.next();

                String masquer = "";
                if ( !curLocale.equals( localeSession ) )
                {
                    masquer = "style=\"display:none\"";
                }
                ResponseUtils.write( pageContext, "<span id=\"span." + getPropertyLocale( curLocale ) + "\" " + masquer
                    + ">" );
                createFieldTag( curLocale );
                createImgFlag( curLocale );
                ResponseUtils.write( pageContext, "</span>" );
            }
        }

        // display the label
        buffer = new StringBuffer();
        endField( buffer );
        ResponseUtils.write( pageContext, buffer.toString() );

        return EVAL_PAGE;
    }

    /**
     * @param locale la locale
     * @throws JspException exception pouvant etre levee
     */
    private void createFieldTag( final String locale )
        throws JspException
    {
        final FieldTag textTag = new FieldTag();
        try
        {
            BeanUtils.copyProperties( textTag, this );

        }
        catch ( final IllegalAccessException e )
        {
            e.printStackTrace();
        }
        catch ( final InvocationTargetException e )
        {
            e.printStackTrace();
        }
        // Change le nom de la properti pour que l'appel soit correct
        textTag.setProperty( getPropertyLocale( locale ) );

        // Supprime les TD et la clef
        textTag.setKey( "" );
        textTag.setWriteTD( false );

        textTag.doStartTag();
        textTag.doEndTag();

    }

    /**
     * Procedure de creation de l'image
     * 
     * @param locale la locale
     * @throws JspException exception pouvant etre levee
     */
    private void createImgFlag( final String locale )
        throws JspException
    {
        final StringBuffer sb = new StringBuffer();
        sb.append( "<a href=\"#\" " );
        sb.append( "onclick=\"displayMutilingueField('" );
        sb.append( "span." + getPropertyLocale( locale ) );
        sb.append( "','" );
        sb.append( "span." + getPropertyLocale( LocaleUtil.getNextLocale( locale ) ) );
        sb.append( "')\" >" );
        sb.append( "<img align=\"absmiddle\" border=\"0\" src=\"" );
        sb.append( WelcomConfigurator.getMessageWithCfgChartePrefix( ".field.path.flag." + locale ) );
        sb.append( "\" >" );
        sb.append( "</a>" );
        ResponseUtils.write( pageContext, sb.toString() );
    }

    /**
     * Retourne la proptery pour un champ
     * 
     * @param locale la locale
     * @return la property
     */
    private String getPropertyLocale( final String locale )
    {
        if ( this.getProperty() != null )
        {
            return ( this.getProperty() + ".string(" + locale + ")" );
        }
        else
        {
            return ( "string(" + locale + ")" );
        }

    }

}