/*****************************************************************************
* *
* This file is part of the tna framework distribution. *
* Documentation and updates may be get from biaoping.yin the author of *
* this framework *
* *
* Sun Public License Notice: *
* *
* The contents of this file are subject to the Sun Public License Version *
* 1.0 (the "License"); you may not use this file except in compliance with *
* the License. A copy of the License is available at http://www.sun.com *
* *
* The Original Code is tag. The Initial Developer of the Original *
* Code is biaoping yin. Portions created by biaoping yin are Copyright *
* (C) 2000. All Rights Reserved. *
* *
* GNU Public License Notice: *
* *
* Alternatively, the contents of this file may be used under the terms of *
* the GNU Lesser General Public License (the "LGPL"), in which case the *
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*****************************************************************************/
package com.frameworkset.common.tag.pager.tags;
import java.util.Collection;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.Tag;
/**
* 根据列表分页是否有数据来输出相应的提示信息
* @author biaoping.yin
* created on 2005-4-4
* version 1.0
*/
public class NotifyTag extends PagerTagSupport {
private int colid = -1;
private String colName;
private String property;
private int index = -1;
/**
* @return int
*/
public int getIndex() {
return index;
}
public int getColid() {
return this.colid;
}
/**
* @param colid
*/
public void setColid(int colid) {
this.colid = colid;
}
/**
* @return String 返回属性名称
*/
public String getColName() {
return colName;
}
/**
* @param string
*/
public void setColName(String string) {
colName = string;
}
protected PagerDataSet searchDataSet(Tag obj,Class clazz) {
PagerDataSet dataSet = null;
if (this.getIndex() < 0) {
dataSet =
(PagerDataSet) findAncestorWithClass(obj, clazz);
} else {
HttpServletRequest request = this.getHttpServletRequest();
//int idx = index();
java.util.Stack stack =
(java.util.Stack) request.getAttribute(
PagerDataSet.PAGERDATASET_STACK);
dataSet = (PagerDataSet) stack.elementAt(this.getIndex());
}
return dataSet;
}
// private Notification notification;
public int doStartTag() throws JspException
{
super.doStartTag();
// this.setMeta();
//System.out.println("cell dataset:" + dataSet);
if (this.getColid() != -1) {
PagerDataSet dataSet = searchDataSet(this,PagerDataSet.class);
if (getProperty() == null)
{
Collection datas = (Collection)dataSet.getValue(dataSet.getRowid(), getColid());
if(datas.size() <=0)
{
//this.notification.setOutput(true);
return EVAL_BODY_INCLUDE;
}
}
else
{
Collection datas = (Collection)dataSet.getValue(dataSet.getRowid(),getColid(),getProperty());
if(datas.size() <=0)
{
//this.notification.setOutput(true);
return EVAL_BODY_INCLUDE;
}
}
} else if (getColName() != null) {
PagerDataSet dataSet = searchDataSet(this,PagerDataSet.class);
if (getProperty() == null)
{
Collection datas = (Collection)dataSet.getValue(dataSet.getRowid(), this.getColName());
if(datas.size() <=0)
{
//this.notification.setOutput(true);
return EVAL_BODY_INCLUDE;
}
}
else
{
Collection datas = (Collection)dataSet.getValue(dataSet.getRowid(),getColName(),getProperty());
if(datas.size() <=0)
{
//this.notification.setOutput(true);
return EVAL_BODY_INCLUDE;
}
}
//outStr = dataSet.getString(dataSet.getRowid(), this.getColName());
}
else
{
if(pagerContext != null )
{
if(pagerContext.isNotifyed())
return SKIP_BODY;
pagerContext.setNotifyed(true);
// out.print(super.pagerContext.getItemCount());
if(!pagerContext.ListMode())
{
if(pagerContext.getItemCount() <= 0 )
{
if(pagerContext.getDataResultSize() <= 0)
return EVAL_BODY_INCLUDE;
}
}
else
{
if(pagerContext.getDataSize() <= 0)
return EVAL_BODY_INCLUDE;
}
}
else
{
// out.println(super.pagerContext.getDataSize());
return EVAL_BODY_INCLUDE;
}
// PagerInfo pager = (PagerInfo) findAncestorWithClass(this, PagerTag.class);
// if(pager.getDataSize() <= 0)
// {
// //this.notification.setOutput(true);
// return EVAL_BODY_INCLUDE;
// }
}
return SKIP_BODY;
}
public void setMeta()
{
// if(this.isExportMeta())
// {
// if(this.notification == null)
// {
// this.notification = new Notification();
// //notification.setNotification(this.getBodyContent().getString());
// }
//
// /**
// * 保存dataModel
// */
// if(!notification.isHasAdded())
// {
// //如果没有最上层的dataSet元数据则在pagerTag中添加添加，
// //否则直接搜索父dataSet元数据，将notification添加到其元数据模型中
// if(pagerContext != null && !pagerContext.getMetaDatas().hasDataModel())
// {
// pagerContext.getMetaDatas().setNotification(notification);
//
// }
// else
// {
// //直接保存到上一级dataSet的元数据模型中
// PagerDataSet data_father = (PagerDataSet)findAncestorWithClass(this, PagerDataSet.class);
// data_father.getDataModel().getMetaDatas().setNotification(notification);
// }
// notification.setHasAdded(true);
// }
// }
}
public String getProperty() {
return property;
}
public void setProperty(String property) {
this.property = property;
}
public void setIndex(int index) {
this.index = index;
}
public int doEndTag() throws JspException
{
this.colid = -1;
this.colName = null;
this.index = -1;
this.property = null;
return super.doEndTag();
}
}