CanvasHeaderTag.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 25 mars 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.canvas;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.TagSupport;

import org.apache.commons.validator.GenericValidator;
import org.apache.struts.util.ResponseUtils;
import org.squale.welcom.outils.WelcomConfigurator;
import org.squale.welcom.taglib.renderer.RendererFactory;


/**
 * CanvasHeaderTag
 */
public class CanvasHeaderTag
    extends TagSupport
{
    /**
     * 
     */
    private static final long serialVersionUID = -3576518524264665546L;

    /** parametre du tag */
    private String headerImageURL = "";

    /** renderer */
    private static ICanvasHeaderRenderer render =
        (ICanvasHeaderRenderer) RendererFactory.getRenderer( RendererFactory.CANVAS_HEADER );

    /**
     * @see javax.servlet.jsp.tagext.TagSupport#doStartTag()
     */
    public int doStartTag()
        throws JspException
    {

        if ( GenericValidator.isBlankOrNull( headerImageURL ) )
        {
            headerImageURL = WelcomConfigurator.getMessage( WelcomConfigurator.HEADER_IMAGE_KEY );
        }

        ResponseUtils.write( pageContext, render.drawHeader( headerImageURL ).toString() );

        return EVAL_PAGE;
    }

    /**
     * Accesseur
     * 
     * @return le headerImageURL
     */
    public String getHeaderImageURL()
    {
        return headerImageURL;
    }

    /**
     * Accesseur le headerImageURL
     * 
     * @param string le headerImageURL
     */
    public void setHeaderImageURL( final String string )
    {
        headerImageURL = string;
    }

    /**
     * @see javax.servlet.jsp.tagext.TagSupport#release()
     */
    public void release()
    {
        super.release();
        headerImageURL = "";
    }

}