/**
 * Copyright(C) 2008-2010 Longkey WuXi Software Technology LTD. All Rights Reserved. 版权所有(C)2008-2010 无锡朗奇软件科技有限公司
 * 公司名称：无锡朗奇软件科技有限公司 公司地址：中国，江苏省无锡市 网址:http://www.longkeysoft.cn
 * <p>
 * Compiler: JDK1.6.0_04
 * <p>
 * 版本: ICT 1.0版 文件名：com.longkey.wcms.action.PublishAction.java
 * <p>
 * 作者: LK0031(熊明威)
 * <p>
 * 创建时间: 2008-10-23上午09:16:40
 * <p>
 * 负责人: Lk0031(熊明威)
 * <p>
 * 部门: 研发部（电子政务）
 * <p>
 * <p>
 * 修改者：LK0031（熊明威）
 * <p>
 * 修改时间：2008-10-23上午09:16:40
 * <p>
 */
// JavaScript Document
/**
 * js分页类
 * 
 * @param iAbsolute
 *            每页显示记录数
 * @param sTableId
 *            分页表格属性ID值，为String
 * @param sTBodyId
 *            分页表格TBODY的属性ID值,为String,此项为要分页的主体内容
 * @Version 1.0.0
 * @author 辛现宝 2007-01-15 created var __variable__; private function
 *         __method__(){};private
 */
function Page(iAbsolute, sTableId, sTBodyId) {
	this.absolute = iAbsolute; // 每页最大记录数
	this.tableId = sTableId;
	this.tBodyId = sTBodyId;
	this.rowCount = 0;// 记录数
	this.pageCount = 0;// 页数
	this.pageIndex = 0;// 页索引
	this.__oTable__ = null;// 表格引用
	this.__oTBody__ = null;// 要分页内容
	this.__dataRows__ = 0;// 记录行引用
	this.__oldTBody__ = null;
	this.__init__(); // 初始化;
};
/*
 * 初始化
 */
Page.prototype.__init__ = function() {
	this.__oTable__ = document.getElementById(this.tableId);// 获取table引用
	this.__oTBody__ = this.__oTable__.tBodies[this.tBodyId];// 获取tBody引用
	this.__dataRows__ = this.__oTBody__.rows;
	this.rowCount = this.__dataRows__.length;
	try {
		this.absolute = (this.absolute <= 0) || (this.absolute > this.rowCount) ? this.rowCount
				: this.absolute;
		this.pageCount = parseInt(this.rowCount % this.absolute == 0 ? this.rowCount
				/ this.absolute
				: this.rowCount / this.absolute + 1);
		//document.getElementById("pageindex").innerHTML = "&nbsp;&nbsp;Current&nbsp;Page&nbsp;"+(this.pageIndex+1);
	} catch (exception) {
	}
     
	this.__updateTableRows__();
};
/*
 * 下一页
 */
Page.prototype.nextPage = function() {
	if (this.pageIndex + 1 < this.pageCount) {
		this.pageIndex += 1;
		this.__updateTableRows__();
		//document.getElementById("pageindex").innerHTML = "&nbsp;&nbsp;Current&nbsp;Page&nbsp;"+(this.pageIndex+1);
	}

};
/*
 * 上一页
 */
Page.prototype.prePage = function() {
	if (this.pageIndex >= 1) {
		this.pageIndex -= 1;
		this.__updateTableRows__();
		//document.getElementById("pageindex").innerHTML = "&nbsp;&nbsp;Current&nbsp;Page&nbsp;"+(this.pageIndex+1);
	}
};
/*
 * 首页
 */
Page.prototype.firstPage = function() {
	if (this.pageIndex != 0) {
		this.pageIndex = 0;
		this.__updateTableRows__();
		//document.getElementById("pageindex").innerHTML = "&nbsp;&nbsp;Current&nbsp;Page&nbsp;"+(this.pageIndex+1);
	}
};
/*
 * 尾页
 */
Page.prototype.lastPage = function() {
	if (this.pageIndex + 1 != this.pageCount) {
		this.pageIndex = this.pageCount - 1;
		this.__updateTableRows__();
		//document.getElementById("pageindex").innerHTML = "&nbsp;&nbsp;Current&nbsp;Page&nbsp;"+(this.pageIndex+1);
	}
};
/*
 * 页定位方法
 */
Page.prototype.aimPage = function(iPageIndex) {
	if (iPageIndex > this.pageCount - 1) {
		this.pageIndex = this.pageCount - 1;
	} else if (iPageIndex < 0) {
		this.pageIndex = 0;
	} else {
		this.pageIndex = iPageIndex;
	}
	this.__updateTableRows__();
	document.getElementById("pageindex").innerHTML = siteSearch_pageBreak_msg001+"&nbsp;"+(this.pageIndex+1)+"&nbsp;"+siteSearch_pageBreak_msg002;
};
/*
 * 执行分页时，更新显示表格内容
 */
Page.prototype.__updateTableRows__ = function() {
	var iCurrentRowCount = this.absolute * this.pageIndex;
	var iMoreRow = this.absolute + iCurrentRowCount > this.rowCount ? this.absolute
			+ iCurrentRowCount - this.rowCount
			: 0;
	var tempRows = this.__cloneRows__();
	// alert(tempRows === this.dataRows);
	// alert(this.dataRows.length);
	var removedTBody = this.__oTable__.removeChild(this.__oTBody__);
	var newTBody = document.createElement("TBODY");
	newTBody.setAttribute("id", this.tBodyId);

	for ( var i = iCurrentRowCount; i < this.absolute + iCurrentRowCount
			- iMoreRow; i++) {
		newTBody.appendChild(tempRows[i]);
	}
	this.__oTable__.appendChild(newTBody);
	/*
	 * this.dataRows为this.oTBody的一个引用， 移除this.oTBody那么this.dataRows引用将销失,
	 * code:this.dataRows = tempRows;恢复原始操作行集合.
	 */
	this.__dataRows__ = tempRows;
	this.__oTBody__ = newTBody;
	// alert(this.dataRows.length);
	// alert(this.absolute+iCurrentRowCount);
	// alert("tempRows:"+tempRows.length);

};
/*
 * 克隆原始操作行集合
 */
Page.prototype.__cloneRows__ = function() {
	var tempRows = [];
	for ( var i = 0; i < this.__dataRows__.length; i++) {
		/*
		 code:this.dataRows[i].cloneNode(param), 
		 param = 1 or true:复制以指定节点发展出去的所有节点,
		 param = 0 or false:只有指定的节点和它的属性被复制.
		 */
		tempRows[i] = this.__dataRows__[i].cloneNode(1);
	}
	return tempRows;
};