paginationmenutag.java

来自「开源项目CRM之OpenCustomer」· Java 代码 · 共 137 行

/*******************************************************************************
 * ***** BEGIN LICENSE BLOCK Version: MPL 1.1
 * 
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with the
 * License. You may obtain a copy of the License at http://www.mozilla.org/MPL/
 * 
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
 * the specific language governing rights and limitations under the License.
 * 
 * The Original Code is the OpenCustomer CRM.
 * 
 * The Initial Developer of the Original Code is Thomas Bader (Bader & Jene
 * Software-Ingenieurb黵o). Portions created by the Initial Developer are
 * Copyright (C) 2005 the Initial Developer. All Rights Reserved.
 * 
 * Contributor(s): Thomas Bader <[e-mail]>
 * 
 * ***** END LICENSE BLOCK *****
 */

package org.opencustomer.web.taglib;

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

import org.apache.struts.taglib.TagUtils;
import org.apache.struts.taglib.html.Constants;
import org.opencustomer.web.util.ScrollBean;

public final class PaginationMenuTag extends TagSupport
{
    private static final long serialVersionUID = 3544387011285628472L;

    private String paramId = "page";

    private String name;

    private String scope;

    private String styleClass;

    public int doEndTag() throws JspException
    {
        StringBuffer results = new StringBuffer();

        // ist dieses Tag in einem Formular?
        if (pageContext.getAttribute(Constants.FORM_KEY, PageContext.REQUEST_SCOPE) == null)
            throw new JspException("element only allowed in forms");

        ScrollBean bean = (ScrollBean) TagUtils.getInstance().lookup(pageContext, name, scope);

        int pages = 0;
        int pageNr = 0;

        if (bean != null)
        {
            pages = bean.getCount() / bean.getPage().getStep();
            if ((bean.getCount() % bean.getPage().getStep()) > 0)
                pages++;
            pageNr = bean.getPage().getPage();
        }

        if (pages > 1)
        {
            for (int i = 1; i <= pages; i++)
            {
                results.append("<input type=\"submit\"");
                results.append(" name=\"");
                results.append(paramId);
                results.append("\"");

                if (i == pageNr)
                    results.append(" disabled=\"disabled\"");

                if (styleClass != null)
                    results.append(" class=\"").append(styleClass).append("\"");

                results.append(" value=\"");
                results.append(i);
                results.append("\"/>");
            }
        }
        else
            results.append("<!-- only one page / do not show -->");

        TagUtils.getInstance().write(pageContext, results.toString());

        release();

        return EVAL_PAGE;
    }

    public final String getName()
    {
        return name;
    }

    public final void setName(String name)
    {
        this.name = name;
    }

    public final String getScope()
    {
        return scope;
    }

    public final void setScope(String scope)
    {
        this.scope = scope;
    }

    public final String getParamId()
    {
        return paramId;
    }

    public final void setParamId(String paramId)
    {
        this.paramId = paramId;
    }

    public final String getStyleClass()
    {
        return styleClass;
    }

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

}