//stat chat bgcolor
var Fat = {
	make_hex : function (r,g,b) 
	{
		r = r.toString(16); if (r.length == 1) r = '0' + r;
		g = g.toString(16); if (g.length == 1) g = '0' + g;
		b = b.toString(16); if (b.length == 1) b = '0' + b;
		return "#" + r + g + b;
	},
	fade_all : function ()
	{
		var a = document.getElementsByTagName("*");
		for (var i = 0; i < a.length; i++) 
		{
			var o = a[i];
			var r = /fade-?(\w{3,6})?/.exec(o.className);
			if (r)
			{
				if (!r[1]) r[1] = "";
				if (o.id) Fat.fade_element(o.id,null,null,"#"+r[1]);
			}
		}
	},
	fade_element : function (id, fps, duration, from, to) 
	{
		if (!fps) fps = 30;
		if (!duration) duration = 3000;
		if (!from || from=="#") from = "#FFFF33";
		if (!to) to = this.get_bgcolor(id);
		
		var frames = Math.round(fps * (duration / 1000));
		var interval = duration / frames;
		var delay = interval;
		var frame = 0;
		
		if (from.length < 7) from += from.substr(1,3);
		if (to.length < 7) to += to.substr(1,3);
		
		var rf = parseInt(from.substr(1,2),16);
		var gf = parseInt(from.substr(3,2),16);
		var bf = parseInt(from.substr(5,2),16);
		var rt = parseInt(to.substr(1,2),16);
		var gt = parseInt(to.substr(3,2),16);
		var bt = parseInt(to.substr(5,2),16);
		
		var r,g,b,h;
		while (frame < frames)
		{
			r = Math.floor(rf * ((frames-frame)/frames) + rt * (frame/frames));
			g = Math.floor(gf * ((frames-frame)/frames) + gt * (frame/frames));
			b = Math.floor(bf * ((frames-frame)/frames) + bt * (frame/frames));
			h = this.make_hex(r,g,b);
		
			setTimeout("Fat.set_bgcolor('"+id+"','"+h+"')", delay);

			frame++;
			delay = interval * frame; 
		}
		setTimeout("Fat.set_bgcolor('"+id+"','"+to+"')", delay);
	},
	set_bgcolor : function (id, c)
	{
		var o = document.getElementById(id);
		o.style.backgroundColor = c;
	},
	get_bgcolor : function (id)
	{
		var o = document.getElementById(id);
		while(o)
		{
			var c;
			if (window.getComputedStyle) c = window.getComputedStyle(o,null).getPropertyValue("background-color");
			if (o.currentStyle) c = o.currentStyle.backgroundColor;
			if ((c != "" && c != "transparent") || o.tagName == "BODY") { break; }
			o = o.parentNode;
		}
		if (c == undefined || c == "" || c == "transparent") c = "#FFFFFF";
		var rgb = c.match(/rgb\s*\(\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*\)/);
		if (rgb) c = this.make_hex(parseInt(rgb[1]),parseInt(rgb[2]),parseInt(rgb[3]));
		return c;
	}
}
//end
function chat_apply_filters(s) {
	return filter_smilies(make_links((s)));
}

var smilies =  [[':\\)',	'icon_smile.gif'], 
		[':\\-\\)',	'icon_smile.gif'], 
		[':D',		'icon_biggrin.gif'], 
		[':\\-D',	'icon_biggrin.gif'], 
		[':grin:',  'icon_biggrin.gif'], 
		[':smile:',  'icon_smile.gif'],
		[':\\(',	'icon_sad.gif'], 
		[':\\-\\(',	'icon_sad.gif'], 
		[':sad:',  'icon_sad.gif'], 
		[':o',		'icon_surprised.gif'], 
		[':\\-o',	'icon_surprised.gif'], 
		['8o',		'icon_eek.gif'], 
		['8\\-o',	'icon_eek.gif'], 
		['8\\-0',	'icon_eek.gif'], 
		[':eek:',	'icon_surprised.gif'], 
		[':s',		'icon_confused.gif'],
		[':\\-s',	'icon_confused.gif'],
		[':lol:',	'icon_lol.gif'],
		[':cool:',	'icon_cool.gif'],
		['8\\)',	'icon_cool.gif'],
		['8\\-\\)',	'icon_cool.gif'],
		[':x',		'icon_mad.gif'],
		[':-x',		'icon_mad.gif'],
		[':mad:',	'icon_mad.gif'],
		[':p',		'icon_razz.gif'],
		[':\\-p',	'icon_razz.gif'],
		[':razz:',	'icon_razz.gif'],
		[':\$',	'icon_redface.gif'],
		[':\\-\$',	'icon_redface.gif'],
		[':\'\\(',	'icon_cry.gif'],
		[':evil:',	'icon_evil.gif'],
		[':twisted:','icon_twisted.gif'],
		[':cry:',	'icon_cry.gif'],
		[':roll:',	'icon_rolleyes.gif'],
		[':wink:',	'icon_wink.gif'],
		[';\\)',	'icon_wink.gif'],
		[';\\-\\)',	'icon_wink.gif'],
		[':!:',		'icon_exclaim.gif'],
		[':\\?',	'icon_question.gif'],
		[':\\-\\?',	'icon_question.gif'],
		[':idea:',	'icon_idea.gif'],
		[':arrow:',	'icon_arrow.gif'],
		[':\\|',	'icon_neutral.gif'],
		[':neutral:',	'icon_neutral.gif'],
		[':\\-\\|',	'icon_neutral.gif'],
		[':mrgreen:',	'icon_mrgreen.gif']];

function make_links (s) {
	
	var re = /((http|https|ftp):\/\/[^ ]*)/gi;
	text = s.replace(re,"<a href=\"$1\" target=\"_blank\">&laquo;链接&raquo;</a>");
	return text;
}

function filter_smilies(s) {
	for (var i = 0; i < smilies.length; i++) {
		var search = smilies[i][0];
		var replace = '<img src="/opencms/system/modules/cn.opencms.xhtml.livechat/resources/smilies/' + smilies[i][1] + '" class=\"wp-smiley\" align=\"absmiddle\" alt="' + smilies[i][0].replace(/\\/g, '') + '" />';
		re = new RegExp(search, 'gi');
		s = s.replace(re, replace);
	}

	return s;
};
// XHTML live Chat for OpenCms
// author: maxuan
// version: 1.0 final
var chat_loadtimes;
var opencms_chat_timeout = 2000;
var chat_timeout = opencms_chat_timeout;
var GetChaturl = "/LiveChat?GetChat=yes&set=zh_CN";
var SendChaturl = "/LiveChat?SendChat=yes&set=zh_CN";
var httpReceiveChat;
var httpSendChat;

//onload function
//setup onload function
if(typeof window.addEventListener != 'undefined')
{
	//.. gecko, safari, konqueror and standard
	window.addEventListener('load', initJavaScript, false);
}
else if(typeof document.addEventListener != 'undefined')
{
	//.. opera 7
	document.addEventListener('load', initJavaScript, false);
}
else if(typeof window.attachEvent != 'undefined')
{
	//.. win/ie

	window.attachEvent('onload', initJavaScript);
}

function initJavaScript() {
	if (!document.getElementById('chatbarText')) { return; }
	document.forms['chatForm'].elements['chatbarText'].setAttribute('autocomplete','off'); //this non standard attribute prevents firefox' autofill function to clash with this script
	// initiates the two objects for sending and receiving data
	checkStatus(''); //sets the initial value and state of the input comment
	chat_loadtimes = 1;
	httpReceiveChat = getHTTPObject();
	httpSendChat = getHTTPObject();
	setTimeout('receiveChatText()', chat_timeout); //initiates the first data query
	document.getElementById('chatbarText').onfocus = function () { checkStatus('active'); }	
	document.getElementById('chatbarText').onblur = function () { checkStatus(''); }
	//document.getElementById('chatbotton').onclick = sendComment;
        document.getElementById('chatbotton').onclick = sendv;
        document.getElementById('chatForm').onsubmit = function () { return false; }
}

function sendv(){
     if (currentChatText.value != '') {
            sendComment();
     } else {
            document.getElementById('chatbarText').focus();
     } 
}

function receiveChatText() {
        chat_lastID = parseInt(document.getElementById('chat_lastID').value)-1;
	if (httpReceiveChat.readyState == 4 || httpReceiveChat.readyState == 0) {
  		httpReceiveChat.open("GET",GetChaturl + '&chat_lastID=' + chat_lastID + '&rand='+Math.floor(Math.random() * 1000000), true);
                httpReceiveChat.onreadystatechange = handlehHttpReceiveChat;
  		httpReceiveChat.send(null);
                chat_loadtimes++;
	        if (chat_loadtimes > 9) chat_timeout = chat_timeout * 5 / 4;
	}
        setTimeout('receiveChatText()',chat_timeout);
        //setTimeout('receiveChatText()',"1000");
}

//deals with the servers' reply to requesting new content
function handlehHttpReceiveChat() {
  if (httpReceiveChat.readyState == 4) {
    results = httpReceiveChat.responseText.split('---'); //the fields are seperated by ---
    if (results.length > 2) {
	    for(i=0;i < (results.length-1);i=i+5) { //goes through the result one message at a time
	    	insertNewContent(results[i+2],results[i+3],results[i+1],results[i+4],results[i]); //inserts the new content into the page
                document.getElementById('chat_lastID').value = parseInt(results[i+1]) + 1;
	    }
        chat_timeout = opencms_chat_timeout;
    	chat_loadtimes = 1;
    }
  }
}

//inserts the new content into the page
function insertNewContent(liName,liText,liId,lidate,liuptime) {
        response = document.getElementById("responseTime");
        response.replaceChild(document.createTextNode(liuptime), response.firstChild);
	insertO = document.getElementById("outputList");
	oLi = document.createElement('li');
	oLi.setAttribute('id','comment-new'+liId);
	oSpan = document.createElement('span');
	oName = document.createTextNode(liName);
        oSpan.appendChild(document.createTextNode('['));
	oSpan.appendChild(document.createTextNode(lidate));
	oSpan.appendChild(document.createTextNode(']'));
	oSpan.appendChild(oName);
	oSpan.appendChild(document.createTextNode(' : '));
	oLi.appendChild(oSpan);
	oLi.innerHTML += chat_apply_filters(liText);
	insertO.insertBefore(oLi, null);
	Fat.fade_element("comment-new"+liId, 30, 1500, "#666666", "#ffffff");
	var divchat=document.getElementById("chatoutput");
	divchat.scrollTop=divchat.scrollHeight;
}

//stores a new comment on the server
function sendComment() {
	currentChatText = document.forms['chatForm'].elements['chatbarText'].value;
        if (currentChatText == '') return;
	if (httpSendChat.readyState == 4 || httpSendChat.readyState == 0) {
		currentName = "guest";
		param = 'username='+ encodeURIComponent(currentName)+'&chatwords='+ encodeURIComponent(currentChatText);
		httpSendChat.open("POST", SendChaturl, true);
		httpSendChat.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
                httpSendChat.onreadystatechange = receiveChatText;
  		httpSendChat.send(param);
  		document.forms['chatForm'].elements['chatbarText'].value = '';
	}
}

function pressedEnter(field,event) {
	var theCode = event.keyCode ? event.keyCode : event.which ? event.which : event.charCode;
	if (theCode == 13) {
		sendComment();
		return false;
	} 
	else return true;
}

function checkStatus(focusState) {
	currentChatText = document.forms['chatForm'].elements['chatbarText'];
	oSubmit = document.forms['chatForm'].elements['submit'];
	if (currentChatText.value != '' || focusState == 'active') {
		oSubmit.disabled = false;
	} else {
		oSubmit.disabled = true;
	}
}

//initiates the XMLHttpRequest object
//as found here: http://www.webpasties.com/xmlHttpRequest
function getHTTPObject() {
  var xmlhttp;
  /*@cc_on
  @if (@_jscript_version >= 5)
    try {
      xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
    } catch (e) {
      try {
        xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
      } catch (E) {
        xmlhttp = false;
      }
    }
  @else
  xmlhttp = false;
  @end @*/
  if (!xmlhttp && typeof XMLHttpRequest != 'undefined') {
    try {
      xmlhttp = new XMLHttpRequest();
    } catch (e) {
      xmlhttp = false;
    }
  }
  return xmlhttp;
}