/*
 * NOTE: This copyright does *not* cover user programs that use HQ
 * program services by normal system calls through the application
 * program interfaces provided as part of the Hyperic Plug-in Development
 * Kit or the Hyperic Client Development Kit - this is merely considered
 * normal use of the program, and does *not* fall under the heading of
 * "derived work".
 * 
 * Copyright (C) [2004, 2005, 2006], Hyperic, Inc.
 * This file is part of HQ.
 * 
 * HQ is free software; you can redistribute it and/or modify
 * it under the terms version 2 of the GNU General Public License as
 * published by the Free Software Foundation. This program 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 General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA.
 */

package org.hyperic.hq.ui.taglib.display;

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

import org.hyperic.hq.ui.util.TaglibUtils;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
 * Re-evaluate the value to be display by the column
 *
*/
public class PathDecorator extends BaseDecorator  {

    private static Log log = 
        LogFactory.getLog(PathDecorator.class.getName());

    private boolean strict = false;

    private int postChars;

    private int preChars;
    
    private String styleClass = null;
    
    /**
     * If string column value exists, use that. Otherwise, return 2nd choice.
     * 
     * @see org.apache.taglibs.display.ColumnDecorator#decorate(java.lang.Object)
     */
    public String decorate(Object columnValue) {
        String realPath = columnValue.toString();
        String shortPath =
            TaglibUtils.shortenPath(columnValue.toString(),
                                    preChars, postChars, strict);
        
        if (realPath.equals(shortPath))
            return realPath;
        
        if (styleClass == null)
            return shortPath;
        
        return "<a href=\"#\" class=\"" + styleClass + "\">" + shortPath +
               "<span>" + realPath + "</span></a>";
    }
    
    public int doStartTag() throws JspTagException {
        ColumnTag ancestorTag =
            (ColumnTag)TagSupport.findAncestorWithClass(this, ColumnTag.class);
        if (ancestorTag == null) {
            throw new JspTagException(
                "A valueDecorator must be used within a ColumnTag.");
        }

        ancestorTag.setDecorator(this);
        return EVAL_BODY_INCLUDE;
    }

    public void release() {
        styleClass = null;
        super.release();
    }
    
    public int getPostChars() {
        return postChars;
    }
    public void setPostChars(int postChars) {
        this.postChars = postChars;
    }
    public int getPreChars() {
        return preChars;
    }
    public void setPreChars(int preChars) {
        this.preChars = preChars;
    }
    public boolean isStrict() {
        return strict;
    }
    public void setStrict(boolean strict) {
        this.strict = strict;
    }
    public String getStyleClass() {
        return styleClass;
    }
    public void setStyleClass(String styleClass) {
        this.styleClass = styleClass;
    }
}