扩展 csdn 的功能

// ==UserScript==

// @name           CSDNViewer

// @namespace      HW

// @include        http://topic.csdn.net/u/*

// ==/UserScript==

var cbo = null;



addComboBox();



//改变显示样式

function OnCboChange(event)

{

	updateReplyItems();

	var value = this.options[this.selectedIndex].value;

	

	for (var i = 0; i < reply_items.length; i++) 

	{

		if (!reply_items[i].replyId) continue; // 非回复

		reply_items[i].table.className = "mframe"; // 去掉隐藏属性

		switch (value) 

		{

			case "v_all": // 全部显示

				reply_items[i].table.style.display = "";

				reply_items[i].table.style.backgroundColor = "";

				break;

			case "v_only_anthor": // 楼主回复

				reply_items[i].table.style.display = getAnthorName().toLowerCase()== reply_items[i].username ? "" : "none";

				break;

			case "hl_anthor": // 高亮楼主回复

				if (getAnthorName().toLowerCase() == reply_items[i].username)

					reply_items[i].table.style.backgroundColor = "yellow";

				break;

			case "v_only_self": //只看自己的回复

				reply_items[i].table.style.display = getUserName().toLowerCase()== reply_items[i].username ? "" : "none";

				break;

			case "hl_self": //高亮自己的回复

				if (getUserName().toLowerCase() == reply_items[i].username)

					reply_items[i].table.style.backgroundColor = "yellow";

				break;

			case "cancel_hl":

				reply_items[i].table.style.backgroundColor = "";

		}

	}

	

	//对楼主主帖的处理

	getAnthorContent().style.backgroundColor = value =="hl_anthor"?"yellow":"";

}



//取得楼主名字

function getAnthorName()

{

	var objs = document.evaluate(

	"//table[@class='mframe']/tbody/tr/td/div/ul/li/dfn/a",

	document,

	null,

	XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE,

	null);

	if (objs.snapshotLength == 0)

		return null;

	var obj = objs.snapshotItem(0);

	return obj.text;

}



//取得楼主帖子正文的 td

function getAnthorContent()

{

	var objs = document.evaluate(

	"//table[@class='mframe']/tbody/tr/td[@class='rw']",

	document,

	null,

	XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE,

	null);

	if (objs.snapshotLength == 0)

		return null;

	var obj = objs.snapshotItem(0);

	return obj;

}



//取得登陆用户名

function getUserName()

{

	var user = getCookie("UserName");

	if (!user || (/^guest$/i).test(user))

		return null;

	return user;

}



//取得某个用户的下一个回复

function getNextReply(user)

{

	updateReplyItems();

	for (var i = 0; i < reply_items.length; i++) 

	{

		if (!reply_items[i].replyId) continue; // 非回复

		if (reply_items[i].username == user)

			return reply_items[i];

	}

	return null;

}



//添加一个 ComBox

function addComboBox()

{

	var selects = document.evaluate(

	"//DIV[@class='tit']/h1/cite/select",

	document,

	null,

	XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE,

	null);

	if (selects.snapshotLength == 0)

		return;

	var select = selects.snapshotItem(0);

	cbo = document.createElement("SELECT");

	option = document.createElement("OPTION");

    option.text = "全部";

    option.value = "v_all";

    cbo.add(option, null);

    

    option = document.createElement("OPTION");

    option.text = "只看楼主";

    option.value = "v_only_anthor";

    cbo.add(option, null);

    

    option = document.createElement("OPTION");

    option.text = "高亮楼主";

    option.value = "hl_anthor";

    cbo.add(option, null);

	

	option = document.createElement("OPTION");

    option.text = "只看自己";

    option.value = "v_only_self";

    cbo.add(option, null);

    

    option = document.createElement("OPTION");

    option.text = "高亮自己";

    option.value = "hl_self";

    cbo.add(option, null);

	

	option = document.createElement("OPTION");

    option.text = "取消高亮";

    option.value = "cancel_hl";

    cbo.add(option, null);

	

	cbo.addEventListener("change", OnCboChange, false);

	

	select.parentNode.insertBefore(cbo, select);

}



//摘自 csdn 的脚本 t5.js

function getCookie(name) {

    var re = new RegExp("(\;|^)[^;]*(" + name + ")\=([^;]*)(;|$)");

    var match = re.exec(document.cookie);

    return match != null ? unescape(match[3]) : null;

}



//摘自 csdn 的脚本 t5.js

function updateReplyItems() {

	if (!window.reply_items) {

		var imgs = document.getElementsByTagName("img");

		window.reply_items = [];

		for (var i = 0; i < imgs.length; i++) {

			var match = (/^grade\s+(\w+)$/i).exec(imgs[i].className);

			if (match) {

				var table = imgs[i].parentNode;

				while (table && !(/^table$/i).test(table.tagName))

					table = table.parentNode;

				if (!table) continue;

				grade = match[1];

				var as = table.getElementsByTagName("a");

				var username = "";

				for (var j = 0; j < as.length; j++) {

					match = (/^http\:\/\/hi\.csdn\.net\/(\w+)\/?$/i).exec(as[j].href);

					if (match) {

						username = match[1].toLowerCase();

						break;

					}

				}

				var dfns = table.getElementsByTagName("dfn");

				var point = 0;

				for (j = 0; j < dfns.length; j++) {

					var p = /得分：(\d+)/.exec(dfns[j].innerHTML);

					if (p) {

						point = parseInt(p[1]);

						break;

					}

				}



				var ls = table.getElementsByTagName("li");

				var honor = null;

				for (j = 0; j < ls.length; j++) {

					if (ls[j].getAttribute("name") == "honor") {

						honor = ls[j];

						break;

					}

				}

				var tds = table.getElementsByTagName("td");

				var body = null;

				var replyId = "";

				var isdeleted = false;

				var tdReply = null;

				for (j = 0; j < tds.length; j++) {

					if (/^r?body/.test(tds[j].getAttribute("csdnid"))) {

						body = tds[j];

						var match = /(\d+)/.exec(tds[j].getAttribute("csdnid"));

						if (match) replyId = match[1];

					} else if (/^rmodify_/.test(tds[j].getAttribute("csdnid"))) {

						isdeleted = /删除/.test(tds[j].innerHTML);

					}

				}

				var divs = table.getElementsByTagName("div");

				var recommend = null;

				for (j = 0; j < divs.length; j++) {

					if (divs[j].className == "rt") {

						recommend = divs[j];

						break;

					}

				}

				reply_items.push({

					"grade": grade

					, "table": table

					, "body": body

					, "username": username

					, "point": point

					, "honor": honor

					, "recommend": recommend

					, "replyId": replyId

					, "isdeleted": isdeleted

				});

			}

		}

	}

}