ShortenTextTag.java

/*
 * RHQ Management Platform
 * Copyright (C) 2005-2008 Red Hat, Inc.
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation version 2 of the License.
 *
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
package org.rhq.enterprise.gui.legacy.taglib;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspTagException;
import javax.servlet.jsp.tagext.TagSupport;
import org.apache.taglibs.standard.tag.common.core.NullAttributeException;
import org.apache.taglibs.standard.tag.el.core.ExpressionUtil;

public class ShortenTextTag extends TagSupport {
    private int maxlength;
    private String value = null;
    private String property = null;
    private String styleClass = "listcellpopup4";
    private boolean shorten = false;

    public ShortenTextTag() {
        super();
    }

    public int doStartTag() throws JspException {
        try {
            value = (String) ExpressionUtil.evalNotNull("spider", "value", getValue(), String.class, this, pageContext);
        } catch (NullAttributeException ne) {
            throw new JspTagException("typeId not found: " + ne);
        } catch (JspException je) {
            throw new JspTagException(je.toString());
        }

        shorten = value.length() > maxlength;

        if (property != null) {
            pageContext.setAttribute(property, value);
        }

        return SKIP_BODY;
    }

    public int doEndTag() throws JspException {
        try {
            if (property == null) {
                if (shorten) {
                    StringBuffer text = new StringBuffer("<a href=\"#\" class=\"").append(styleClass).append("\">")
                        .append(value.substring(0, maxlength)).append("...").append("<span>").append(value).append(
                            "</span></a>");
                    pageContext.getOut().println(text.toString());
                } else {
                    pageContext.getOut().println(value);
                }
            }
        } catch (java.io.IOException e) {
            throw new JspException(e);
        }

        return super.doEndTag();
    }

    public String getValue() {
        return this.value;
    }

    public void setValue(String value) {
        this.value = value;
    }

    public String getProperty() {
        return this.property;
    }

    public void setProperty(String property) {
        this.property = property;
    }

    public int getMaxlength() {
        return this.maxlength;
    }

    public void setMaxlength(int preChars) {
        this.maxlength = preChars;
    }

    public String getStyleClass() {
        return styleClass;
    }

    public void setStyleClass(String styleClass) {
        this.styleClass = styleClass;
    }
}