/* * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General * Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */function Lace() {	this.init();}Lace.prototype.init = function() {	this.interval   = 0;	this.defaultInterval = LaceConfig.interval * 1000; // Default interval if IntervalManager is not present	this.url        = LaceConfig.url + 'lace.php';	this.nameObj    = $('name');	this.textObj    = $('text');	this.laceDomRef = $('laceoutput');	// Javascript has scope issues with using 'this'	// inside of an anonymous function, so we use a	// copy of 'this' (thisObj)	var thisObj = this;	//Inititalize Interval Manager if present	if (window.IntervalManager) {		this.intManObj = new IntervalManager();	}	this.textObj.setAttribute('autocomplete', 'off');	this.textObj.focus();	// Used for detecting updates	this.chatHash = 'default hash';	this.userHash = 'default hash';	this.userList = [];	// Setup the internal name change monitor	this.name = encodeURIComponent(this.nameObj.value);	this.nameObj.onblur = function() { thisObj.validateName(); };	// Lace state and timer properties	this.isActive = false;	this.interval = false;	this.httpSendObj = this.httpObject();	this.httpGetObj  = this.httpObject();	// Start Lace if XMLHttpRequest is present.  Also, we need	// to use encodeURIComponent.  Sorry IE5.0...	if (this.httpSendObj !== false && window.encodeURIComponent) {		$('laceform').onsubmit = function() {thisObj.send(); return false;};		this.statusDisplay();		this.start();	}};Lace.prototype.validateName = function() { 	name = this.nameObj.value;	// ARGH!  Could not get Regex working in Safari... 	if ( name.indexOf('!') !== -1 		|| name.indexOf('#') !== -1 		|| name.indexOf('%') !== -1 		|| name.indexOf('&') !== -1 		|| name.indexOf('*') !== -1 		|| name.indexOf('+') !== -1 		|| name.indexOf('|') !== -1 		|| name.indexOf('<') !== -1 		|| name.indexOf('>') !== -1 	) {		var error = 'Sorry, your name contains one or more of the following'+			' illegal characters:\n\n! # % & * + | < > \n\n' +			'Please remove them and try again.';		alert(error);		this.nameObj.value = decodeURIComponent(this.name);		return false;  }	name = encodeURIComponent(name);	if (name == this.name)		return true;	var searchName = this.nameObj.value.trim();	var nameExists = this.userList.linearSearchI(searchName);	if (nameExists) { 		alert('Sorry, another user has that name.\n\nPlease choose a different name.'); 		this.nameObj.value = decodeURIComponent(this.name); 		return false; 	}};Lace.prototype.disableInputs = function() {	this.textObj.disabled = true;	this.nameObj.disabled = true;	$('say').disabled = true;};Lace.prototype.enableInputs = function() {	this.textObj.disabled = false;	this.nameObj.disabled = false;	$('say').disabled = false;	this.resetInputs();};Lace.prototype.resetInputs = function() {	// Clear field value - even in Safari	this.textObj.blur();	this.textObj.value='';	this.textObj.focus();};Lace.prototype.floodCountdown = function(s) {	if (s == 0) {		deleteCookie(LaceConfig.floodCookie, LaceConfig.url);		this.enableInputs();		this.textObj.value = this.floodText;		delete this.floodText;		if (this.isActive)			this.send();		return;	}	this.disableInputs();	this.textObj.value = 'Flood Protection: Your message will be sent in ' + s + ' seconds.';	var thisObj = this;	setTimeout(function() {thisObj.floodCountdown(--s); }, 1000);};Lace.prototype.isNameChange = function(name) {	msgTokens = name.split(' ');	if (msgTokens[0].toLowerCase() === '/nick')	{		msgTokens.shift();		this.nameObj.value = msgTokens.join(' ').substring(0,10);		this.resetInputs();		return true;	}	return false;}Lace.prototype.send = function() {	var thisObj = this;	if (this.isNameChange(this.textObj.value) === true)		return;	if (this.textObj.value.indexOf("undefined") === 0 ||	  this.textObj.value.indexOf("Flood Protection: Your message will be sent in") === 0) {		resetInputs();		return;	}	var name = encodeURIComponent(this.nameObj.value);	var text = encodeURIComponent(this.textObj.value);	// No flooding	var floodCookie = getCookie(LaceConfig.floodCookie);	if (floodCookie !== null && floodCookie >= LaceConfig.floodCount) {		this.floodText = this.textObj.value;		this.resetInputs();		this.floodCountdown(10);		return;	}	if (name !== '' && text !== '') {		if (this.httpSendObj === null)			this.start();		if (this.httpSendObj.readyState === 4 || this.httpSendObj.readyState === 0) {			this.name = name;			this.resetInputs();			var param = 'name=' + name + '&text=' + text;			param += '&chatHash=' + encodeURIComponent(this.chatHash);			param += '&userHash=' + encodeURIComponent(this.userHash);			this.httpSendObj.open('POST', this.url, true);			this.httpSendObj.setRequestHeader('Content-Type','application/x-www-form-urlencoded; charset=UTF-8');			this.httpSendObj.onreadystatechange = function() { thisObj.handleSend(); };			this.httpSendObj.send(param);		}else {			setTimeout(function() { thisObj.send(); }, 250);		}	}};Lace.prototype.handleSend = function() {	if (this.isActive && this.httpSendObj !== null && this.httpSendObj.readyState === 4) {		this.timerReset();		var response = this.httpSendObj.responseText;		this.handleResponse(response);		scrollToBottom($('main'), true);	}};Lace.prototype.get = function(system) {	var thisObj = this;	if (this.httpGetObj !== null && (this.httpGetObj.readyState === 4 || this.httpGetObj.readyState === 0)) {		var param = 'chatHash=' + encodeURIComponent(this.chatHash);		param += '&userHash=' + encodeURIComponent(this.userHash);		this.httpGetObj.open('POST', this.url, true);		this.httpGetObj.setRequestHeader('Content-Type','application/x-www-form-urlencoded; charset=UTF-8');		this.httpGetObj.onreadystatechange = function() { thisObj.handleGet(system); };		this.httpGetObj.send(param);	} else {		setTimeout(function() { thisObj.get(); }, 500);	}};Lace.prototype.handleGet = function(system) {	if (this.httpGetObj !== null && this.httpGetObj.readyState === 4) {		this.timerStep(system);		var response = this.httpGetObj.responseText;		this.handleResponse(response);		scrollToBottom($('main'));	}};Lace.prototype.handleResponse = function(response) {	// Very useful for debugging	//alert(response);	if (response !== null && typeof(response) != "undefined") {		//response = '('+response+')';		var json = eval( '('+response+')' );		this.insertResults(json.response);	}};Lace.prototype.insertResults = function(json) {	if (json.chat.hash) {		this.chatHash = json.chat.hash;		this.laceDomRef.innerHTML = json.chat.data;	}	if (json.user.hash) {		this.userHash = json.user.hash;		this.userList = json.user.data;		var ul = $('userlist');		while (ul.hasChildNodes()) ul.removeChild(ul.firstChild);		for (var i=0; i<json.user.data.length; i++)		{			var name = json.user.data[i];			if (name !== null && typeof(name) != "undefined") {				var li = document.createElement('li');		  		li.appendChild(document.createTextNode(name));		  		ul.appendChild(li);			}		}	}};Lace.prototype.start = function() {	this.setActive(true);	this.timerStart();};Lace.prototype.stop = function() {	if (this.timerStop() === true) {		this.setActive(false);	}};Lace.prototype.toggle = function() {	if (this.isActive === false) {		this.start();	} else {		this.stop();	}};/* Lace's timer functions. * These functions should be better * abstracted into the IntervalManager. */Lace.prototype.timerStart = function() {	if (this.isActive === false) {		return false;	}	if (this.intManObj) {		var interval = this.intManObj.reset();		this.timerSet(interval);		return true;	} else {		this.timerSet(this.defaultInterval);	}	return false;};Lace.prototype.timerStop = function() {	if (this.isActive === false) {		return true;	}	if (this.intManObj) {		clearInterval(this.timerID);		this.interval = false;	}	return true;};Lace.prototype.timerSet = function(interval) {	if (this.isActive === false) {		return false;	}	this.interval = interval;	var thisObj = this;	clearInterval(this.timerID);	this.timerID = setInterval(function() { thisObj.get(true); }, interval);	return true;};Lace.prototype.timerReset = function() {	if (this.isActive === false) {		return false;	}	if (this.intManObj) {		var interval = this.intManObj.reset();		return this.timerSet(interval);	}	this.timerStart();	return false;};Lace.prototype.timerStep = function(system) {	if (this.isActive === false) {		if (system !== true) {			return this.start();		}		return false;	}	if (this.intManObj) {		var interval = this.intManObj.step();		if (interval !== false) {			return this.timerSet(interval);		}		return this.stop();	}	return false;};Lace.prototype.httpObject = function() {	var xmlhttp = false;	/*@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;};Lace.prototype.setActive = function(active) {	var img  = $('statusimage');	var text = $('statustext');	var main = $('main');	var userList = $('userlist');	if (active === true) {		img.setAttribute('src', LaceConfig.url + 'images/pause.gif');		img.setAttribute('alt', 'Stop');		img.setAttribute('title', 'Click to stop');		this.isActive  = true;		text.innerHTML = 'Active';		main.setAttribute('class', 'active');		main.setAttribute('className', 'active');		userList.setAttribute('class', 'active');		userList.setAttribute('className', 'active');		this.httpGetObj  = this.httpObject();		this.httpSendObj = this.httpObject();		this.get();	} else if (active === false) {		img.setAttribute('src', LaceConfig.url + 'images/play.gif');		img.setAttribute('alt', 'Start');		img.setAttribute('title', 'Click to start');		this.httpGetObj  = null;		this.httpSendObj = null;		this.isActive = false;		text.innerHTML  = 'Stopped';		main.setAttribute('class', 'inactive');		main.setAttribute('className', 'inactive');		userList.setAttribute('class', 'inactive');		userList.setAttribute('className', 'inactive');		clearInterval(this.timerID);	}};Lace.prototype.statusDisplay = function() {	var outer = document.createElement('div');	outer.setAttribute('id', 'status');	var div = document.createElement('div');	div.setAttribute('id', 'statuswrap');	var txt = document.createElement('span');	txt.setAttribute('id', 'statustext');	var img = document.createElement('img');	img.setAttribute('width', '13');	img.setAttribute('height', '13');	img.setAttribute('id', 'statusimage');	var thisObj = this;	img.onclick = function() {		if (thisObj.isActive === true) {			thisObj.stop();		} else {			thisObj.start();		}	};	div.appendChild(txt);	div.appendChild(img);	outer.appendChild(div);	var parent = $('subnav');	parent.appendChild(outer);};