package com.newvideo.web.tag;

import java.io.IOException;
import java.util.Iterator;
import java.util.Map;

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

public class PageTag extends TagSupport {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	private String url; // 链接地址
	private int pageindex;// 当前页
	private int pagesize; // 页大小
	private int totalLines; // 总记录条数
	private Map<String, String> params;// 附加参数
	private String preimage;
	private String nextimage;
	private String pagebg;
	private String inputbg;
	private String gobg;

	public int getPageindex() {
		return pageindex;
	}

	public void setPageindex(int pageindex) {
		this.pageindex = pageindex;
	}

	public String getPreimage() {
		return preimage;
	}

	public void setPreimage(String preimage) {
		this.preimage = preimage;
	}

	public String getNextimage() {
		return nextimage;
	}

	public void setNextimage(String nextimage) {
		this.nextimage = nextimage;
	}

	public String getPagebg() {
		return pagebg;
	}

	public void setPagebg(String pagebg) {
		this.pagebg = pagebg;
	}

	public String getInputbg() {
		return inputbg;
	}

	public void setInputbg(String inputbg) {
		this.inputbg = inputbg;
	}

	public String getGobg() {
		return gobg;
	}

	public void setGobg(String gobg) {
		this.gobg = gobg;
	}

	public String getUrl() {
		return url;
	}

	public void setUrl(String url) {
		this.url = url;
	}

	public int getPagesize() {
		return pagesize;
	}

	public void setPagesize(int pagesize) {
		this.pagesize = pagesize;
	}

	public int getTotalLines() {
		return totalLines;
	}

	public void setTotalLines(int totalLines) {
		this.totalLines = totalLines;
	}

	public Map<String, String> getParams() {
		return params;
	}

	public void setParams(Map<String, String> params) {
		this.params = params;
	}

	private int totalPages() {
		return totalLines % pagesize == 0 ? totalLines / pagesize : totalLines
				/ pagesize + 1;
	}

	// 获取完整的URL
	private String getAllUrl(int pageIndex) {
		String baseUrl = url;
		baseUrl += "?pageIndex=" + pageIndex;
		if (params != null) {
			Iterator<String> its = params.keySet().iterator();
			while (its.hasNext()) {
				String key = its.next();
				String value = params.get(key);
				baseUrl += "&" + key + "=" + value;
			}
		}
		return baseUrl;
	}

	@Override
	public int doStartTag() throws JspException {
		int totalPage = totalPages();
		String style = "background:url("
				+ pagebg
				+ ");width:38px;height:38px;text-align:center;line-height:38px;float:left;margin-left:1px;border:0;";

		String shenYuStyle = "float:left;margin-left:10px;height:38px;line-height:38px;";

		String jumpText = "float:left;margin-left:107px;height:38px;line-height:38px;";

		String inputStyle = "border:0;background:url("
				+ pagebg
				+ ");width:36px;height:36px;text-align:center;line-height:38px;float:left;margin-left:10px;";
		String content = "<div  style='" + style + "'>"
				+ "<a href=''><img src='" + preimage + "' /></a></div>"
				+ "<div ><a href=''><input type='button' value='1' style='"
				+ style + "' /></a></div>" + "<div style='" + style
				+ "'><a href=''><img src='" + nextimage + "'/></a></div>"
				+ "<div style='" + jumpText + "'>当前页:" + pageindex + "/"
				+ totalPage + " 跳转到：</div>"
				+ "<div ><input type='text' style='" + inputStyle
				+ "' /></div>" + "<a href=''><div style='" + style
				+ "'>Go</div></a>";
		if (pageindex < 1)
			pageindex = 1;
		if (pageindex > totalPage)
			pageindex = totalPage;
		String c = "<div  style='" + style + "'>" + "<a href='"
				+ getAllUrl((pageindex > 1 ? pageindex - 1 : 1))
				+ "'><img src='" + preimage + "' /></a></div>";
		if (totalPage < 6) {

			for (int i = 0; i < totalPage; i++) {
				c += "<div><a href='" + getAllUrl((i + 1))
						+ "'><input type='button' value='" + (i + 1)
						+ "' style='" + style + "' /></a></div>";
			}

		} else {
			if (Math.abs(pageindex) < 3 || Math.abs(pageindex - totalPage) < 3) {
				if (Math.abs(pageindex) <= 3) {
					for (int i = 0; i < 5; i++) {
						c += "<div><a href='" + getAllUrl((i + 1))
								+ "'><input type='button' value='" + (i + 1)
								+ "' style='" + style + "' /></a></div>";
					}
				} else {

					for (int i = 0; i < 5; i++) {
						c += "<div><a href='" + getAllUrl(totalPage - 4 + i)
								+ "'><input type='button' value='"
								+ (totalPage - 4 + i) + "' style='" + style
								+ "' /></a></div>";
					}

				}

			} else {

				for (int i = 0; i < 5; i++) {
					c += "<div><a href='" + getAllUrl(i + pageindex - 2)
							+ "'><input type='button' value='"
							+ (i + pageindex - 2) + "' style='" + style
							+ "' /></a></div>";
				}
			}
		}

		c += "<div style='"
				+ style
				+ "'><a href='"
				+ getAllUrl(pageindex + 1 > totalPage ? totalPage
						: pageindex + 1) + "'><img src='" + nextimage
				+ "'/></a></div>" + "<div style='" + jumpText + "'>当前页:"
				+ pageindex + "/" + totalPage + " 跳转到：</div>"
				+ "<div ><input type='text' id='jumppage' style='" + inputStyle
				+ "' /></div>"
				+ "<a href='#' onclick='javascript:getPage()'><div style='"
				+ style + "'>Go</div>";

		System.out.println(pageindex + "-" + totalLines + "-" + pagesize + "-"
				+ url + "-" + preimage + "-" + nextimage + "-" + pagebg + "-"
				+ inputbg + "-" + gobg + "-"
				+ pageContext.getRequest().getLocalAddr());

		JspWriter out = this.pageContext.getOut();
		try {
			out.print("<script type='text/javascript'>alert('123123'); function getPage(){alert('page');window.location="
					+ url
					+ "?pageIndex=document.getElementById('jumppage').value; }</script>");
			out.print(c);
		} catch (IOException e) {
			e.printStackTrace();
		}

		return EVAL_BODY_INCLUDE;
	}

	@Override
	public int doEndTag() throws JspException {
		// TODO Auto-generated method stub
		return super.doEndTag();
	}

}