//
// Global variables
//
var ch_timeout = 0;
var ch_requestsent = 0;
var ch_postsent = 0;
var ch_chatsent = 0;
var ch_refreshRate = 1000 * 7; // two seconds
var ch_last_msg = 0;
var ch_loginmsg = 'Authentication is required. login or register';
var ch_banmsg = 'You have been banned from the chat';
// added to reduce server load
var ch_t = 0;
var ch_throttle_back = 20; // this is in multiples of ch_refreshRate
var ch_lastpost = 0; // throttling reduces traffic by
function ch_getAjax() {
var request = null;
try{
request = new XMLHttpRequest();
}catch (trymicrosoft){
try{
request = new ActiveXObject("Msxml2.XMLHTTP");
}catch (othermicrosoft){
try{
request = new ActiveXObject("Microsoft.XMLHTTP");
}catch (failed){
request = null;
}
}
}
if (request == null){
alert("Error creating request object!");
}
return request;
}
//
// Capture the enter key on
// the input box and initiate a
// GET to the post url
//
function ch_captureReturn( event )
{
//
// Supress event bubbling
//
if( event.keyCode == 13 ) {
//
// ch_fetch the feed
//
ch_postText();
if (event.preventDefault) event.preventDefault();
else event.returnValue = false;
}
}
//
// Auto scroll the chat window
// if the text exceeds the div
//
function scrollChatPane()
{
pane = document.getElementById("chatpane");
pane.scrollTop = pane.scrollHeight;
}
//
// Show the little loading animation
// when the page starts
//
function ch_showLoadScreen()
{
var loading = "Loading...
";
var chat = document.getElementById( "chatpane" );
chat.innerHTML = loading;
}
//
// Start the ch_fetch timer to update
// the chatpane and userlist
//
function ch_setTimers()
{
window.clearTimeout(ch_timeout);
ch_timeout = window.setTimeout( "ch_fetch()", ch_refreshRate );
}
//
// Start the async ch_fetch
// and reset the ch_fetch timer
//
var ch_fetching = false;
var ch_fetchi = 0;
function ch_fetch()
{
ch_setTimers();
if (ch_fetching) {
ch_fetchi ++;
if (ch_fetchi > 2) ch_req.abort();
return;
}
ch_fetchi = 0;
ch_fetching = true;
ch_fetchBufferText();
ch_t++;
if ( ch_t - ch_lastpost > (2 * ch_throttle_back) ) {
ch_refreshRate = 60000;
} else if( ch_t - ch_lastpost > ch_throttle_back ) {
ch_refreshRate = 10000;
} else {
ch_refreshRate = 5000;
}
}
function appendNode(obj, className, text) {
var el = document.createElement('div');
if (className != "") el.className = className;
el.innerHTML = text;
obj.appendChild(el);
}
function formatText(msg) {
msg = msg.replace(/:\)/g, "
");
msg = msg.replace(/;\)/g, "
");
msg = msg.replace(/:\(/g, "
");
msg = msg.replace(/:p/gi, "
");
msg = msg.replace(/:d/gi, "
");
msg = msg.replace(/:\-d/gi, "");
msg = msg.replace(/:roll/gi, "
");
msg = msg.replace(/:cheers/gi, "
");
msg = msg.replace(/:kiss/gi, "
");
msg = msg.replace(/\*yahoo\*/gi, "
");
msg = msg.replace(/\*dontknow\*/gi, "
");
msg = msg.replace(/\*angry\*/gi, "
");
msg = msg.replace(/\*crazy\*/gi, "
");
msg = msg.replace(/\*pardon\*/gi, "
");
msg = msg.replace(/\*no\*/gi, "
");
msg = msg.replace(/:-x/gi, "
");
msg = msg.replace(/8-\)/gi, "
");
msg = msg.replace(/:-\|/gi, "
");
msg = msg.replace(/:-\//gi, "
");
msg = msg.replace(/\*bravo\*/gi, "
");
msg = msg.replace(/\*crying\*/gi, "
");
msg = msg.replace(/\*help\*/gi, "
");
msg = msg.replace(/:-\*/gi, "
");
msg = msg.replace(/\*love\*/gi, "
");
msg = msg.replace(/\*ok\*/gi, "
");
msg = msg.replace(/:-o/gi, "
");
msg = msg.replace(/\*sorry\*/gi, "
");
msg = msg.replace(/\*stop\*/gi, "
");
msg = msg.replace(/\*thumbs\*/gi, "
");
msg = msg.replace(/\*tired\*/gi, "
");
msg = msg.replace(/:-!/gi, "
");
msg = msg.replace(/:-\[/gi, "
");
msg = msg.replace(/\*wassup\*/gi, "
");
msg = msg.replace(/\*metal\*/gi, "
");
msg = msg.replace(/\*rose\*/gi, "
");
msg = msg.replace(/\*confused\*/gi, "
");
msg = msg.replace(/\*kissing\*/gi, "
");
msg = msg.replace(/\*jokingly\*/gi, "
");
msg = msg.replace(/\*music\*/gi, "
");
msg = msg.replace(/\*dance\*/gi, "
");
return msg;
}
/* #############################
*
* function: ch_fetchBufferText()
* purpose:
*
* This function retrieves the last
* twenty lines of the chat buffer.
* The chat buffer is returned as a
* set of list-items and are rendered
* in a tag. This function calls
* the scroll function to scroll the
* chat pane.
*
* notes: A random number is generated
* when this page loads. This number is
* incrimented and appended to the url to
* prevent caching problems in IE
*
* #############################
*/
function ch_fetchBufferText()
{
var url = '../chatr/buffertext.php?l=' + ch_last_msg + '&c=' + ch_channel + '&rand=' + new Date().getTime();
ch_req = ch_getAjax();
ch_req.onreadystatechange = function(){
if( ch_req.readyState == 4) {
try {
var status = ch_req.status;
} catch (e) {
var status = -100;
}
if (status == -100) {
ch_fetching = false;
ch_fetch();
return;
}
if (status == 200) {
var obj = document.getElementById("chatpane");
if (ch_last_msg == 0) {
obj.innerHTML = '';
}
var timexxx = ch_last_msg == 0;
var s = ch_req.responseText;
if (s.length > 0) {
var lines = s.split("\n");
for (var i = 0; i < lines.length; i++) {
var line = lines[i];
if (line.length != 0) {
var data = line.split("\t");
var msg_id = parseInt(data[0]);
if (msg_id > ch_last_msg) {
ch_last_msg = msg_id;
if (!timexxx) {
var timestamp = new Date();
//timestamp.setTime(parseInt(data[1]) * 1000);
var h = timestamp.getHours();
if (h < 10) h = '0' + h;
var m = timestamp.getMinutes();
if (m < 10) m = '0' + m;
var formatedTime = h + ':' + m;
} else {
var formatedTime = 'xx:xx';
}
var formated = formatText(data[3]);
appendNode(obj, '', '' + formatedTime + ' ' + data[2] + ' » ' + formated);
}
}
}
scrollChatPane();
if (document.getElementById('ch_form').style.display == 'none') {
document.getElementById('chattitle').innerHTML = '» chatr :)'
}
}
}
ch_fetching = false;
}
}
ch_req.open( 'GET', url , true );
ch_req.send( null );
ch_requestsent++;
}
/* #############################
*
* function: ch_postText()
* purpose:
*
* A users chat is posted to the server in
* the querystring of the ch_postText.aspx url.
* The format of the querystring is:
*
* ?u=[username]&ch_t=[chat text]
*
* Because of the nature of the url encoding
* certain chat text will fail to post.
* The chat text cannot contain any values
* that are invalid in a url, or are part
* of the url structure, such as the ampersand (&)
* forward slash (/), etc.
*
* #############################
*/
function ch_postText()
{
chatbox = document.getElementById( "mytext" );
var chat = chatbox.value;
chatbox.value = '';
if (chat.length == 0 ) {return; }
var url = '../chatr/posttext.php?c=' + ch_channel + '&rand=' + new Date().getTime();
var req_post = ch_getAjax();
req_post.onreadystatechange = function(){
if (req_post.readyState == 4 && req_post.status == 200) {
var s = req_post.responseText;
var nRes = parseInt(s);
if (nRes == 0) {
ch_fetch();
} else if (nRes == 1) {
var obj = document.getElementById('chatpane');
appendNode(obj, 'servermsg', ch_loginmsg);
scrollChatPane();
} else if (nRes == 2) {
var obj = document.getElementById('chatpane');
appendNode(obj, 'servermsg', ch_banmsg);
scrollChatPane();
} else if (nRes == 11) {
var obj = document.getElementById('chatpane');
appendNode(obj, 'servermsg', 'calm down 
');
scrollChatPane();
} else if (nRes == 10) {
//
} else {
var obj = document.getElementById('chatpane');
appendNode(obj, 'servermsg', 'ERROR!');
scrollChatPane();
}
}
}
req_post.open( 'POST', url, true );
req_post.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
req_post.send('t=' + chat);
ch_lastpost = ch_t;
ch_postsent++;
}
function startChat()
{
ch_showLoadScreen();
ch_fetch();
}
var ch_cancelHide = false;
function hideSmileys() {
if (ch_cancelHide) return;
document.getElementById('smileys').style.display = 'none';
}
function ch_doHide() {
ch_cancelHide = false;
setTimeout('hideSmileys()', 100);
}
function ch_getAbsolutePos(el) {
var r = { x: el.offsetLeft, y: el.offsetTop };
if (el.offsetParent) {
var tmp = ch_getAbsolutePos(el.offsetParent);
r.x += tmp.x;
r.y += tmp.y;
}
return r;
}
function showSmileys() {
var r = ch_getAbsolutePos(document.getElementById('smiley'));
var cp = document.getElementById('smileys');
cp.style.left = (r.x - 130) + 'px';
cp.style.top = (r.y - 220) + 'px';
cp.style.display = 'block';
ch_cancelHide = true;
}
var ch_curr = null;
var ch_dx;
var ch_dy;
function ch_select(el, event) {
ch_curr = el;
var cx = el.offsetLeft;
var cy = el.offsetTop;
var tx = -100;
var ty = -100;
if (event.pageX) tx = event.pageX;
else if (event.x) tx = event.x;
if (event.pageY) ty = event.pageY;
else if (event.y) ty = event.y;
if ((tx == -100) || (ty == -100)) return;
if (el.id == 'ch_body') {
ch_dx = cx - tx;
ch_dy = cy - ty;
} else if (el.id == 'chatpane') {
ch_dx = el.offsetWidth - tx - 6;
ch_dy = el.offsetHeight - ty - 6;
}
if (event.stopPropagation) event.stopPropagation();
else event.cancelBubble = true;
if (event.preventDefault) event.preventDefault();
else event.returnValue = false;
if (document.addEventListener) {
document.addEventListener("mousemove", ch_move, true);
document.addEventListener("mouseup", ch_release, true);
}
else if (document.attachEvent) {
document.attachEvent("onmousemove", ch_move);
document.attachEvent("onmouseup", ch_release);
}
}
function ch_move(event) {
if (ch_curr == null) return;
var tx = -100;
var ty = -100;
if (event.pageX) tx = event.pageX;
else if (event.x) tx = event.x;
if (event.pageY) ty = event.pageY;
else if (event.y) ty = event.y;
if ((tx == -100) || (ty == -100)) return;
var cx = ch_dx + tx;
var cy = ch_dy + ty;
if (ch_curr.id == 'ch_body') {
ch_curr.style.left = cx + 'px';
ch_curr.style.top = cy + 'px';
} else if (ch_curr.id = 'chatpane') {
with (document.getElementById('chatpane').style) {
width = cx + 'px';
height = cy + 'px';
}
with (document.getElementById('ch_body')) {
style.left = offsetLeft + 1 + 'px';
style.left = offsetLeft - 1 + 'px';
//height = cy + 16 + 'px';
}
with (document.getElementById('mytext').style) {
width = cx - 41 + 'px';
}
}
if (event.stopPropagation) event.stopPropagation();
else event.cancelBubble = true;
if (event.preventDefault) event.preventDefault();
else event.returnValue = false;
}
function ch_release(event) {
if (document.removeEventListener) {
document.removeEventListener("mouseup", ch_release, true);
document.removeEventListener("mousemove", ch_move, true);
}
else if (document.detachEvent) {
document.detachEvent("onmouseup", ch_release);
document.detachEvent("onmousemove", ch_move);
}
if (event.stopPropagation) event.stopPropagation();
else event.cancelBubble = true;
ch_curr = null;
}
function ch_toggle_vis() {
var ch_form = document.getElementById('ch_form');
if (ch_form.style.display != 'none') {
ch_form.style.display = 'none';
var ch_body = document.getElementById('ch_body');
ch_body.style.left = ch_body.offsetLeft + 1 + 'px';
ch_body.style.left = ch_body.offsetLeft - 1 + 'px';
document.getElementById('ch_min').style.backgroundImage = 'url(../chatr/images/max.png)';
} else {
ch_form.style.display = 'block';
document.getElementById('chattitle').innerHTML = '» chatr :)';
document.getElementById('ch_min').style.backgroundImage = 'url(../chatr/images/min.png)';
scrollChatPane();
}
}