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/* ******************************
Module - Chat Room
Author: Jack Lukic
Notes: First Commit Aug 8, 2012
Designed as a simple modular chat component
****************************** */
;(function ($, window, document, undefined) {
$.fn.chat = function(key, channelName, parameters) {
var
settings = $.extend(true, {}, $.fn.chat.settings, parameters),
// hoist arguments
moduleArguments = arguments || false
;
$(this)
.each(function() {
var
$module = $(this),
$expandButton = $module.find(settings.selector.expandButton),
$userListButton = $module.find(settings.selector.userListButton),
$userList = $module.find(settings.selector.userList),
$room = $module.find(settings.selector.room),
$userCount = $module.find(settings.selector.userCount),
$log = $module.find(settings.selector.log),
$message = $module.find(settings.selector.message),
$messageInput = $module.find(settings.selector.messageInput),
$messageButton = $module.find(settings.selector.messageButton),
instance = $module.data('module'),
className = settings.className,
namespace = settings.namespace,
html = '',
users = {},
loggedInUser,
message,
count,
height,
pusher,
module
;
module = {
channel: false,
width: {
log : $log.width(),
userList : $userList.outerWidth()
},
initialize: function() {
// check error conditions
if(Pusher === undefined) {
module.error(settings.errors.pusher);
}
if(key === undefined || channelName === undefined) {
module.error(settings.errors.key);
return false;
}
else if( !(settings.endpoint.message || settings.endpoint.authentication) ) {
module.error(settings.errors.endpoint);
return false;
}
// define pusher
pusher = new Pusher(key);
Pusher.channel_auth_endpoint = settings.endpoint.authentication;
module.channel = pusher.subscribe(channelName);
module.channel.bind('pusher:subscription_succeeded', module.user.list.create);
module.channel.bind('pusher:subscription_error', module.error);
module.channel.bind('pusher:member_added', module.user.joined);
module.channel.bind('pusher:member_removed', module.user.left);
module.channel.bind('update_messages', module.message.receive);
$.each(settings.customEvents, function(label, value) {
module.channel.bind(label, value);
});
// expandable with states
if( $.fn.hoverClass !== undefined && $.fn.downClass !== undefined ) {
$expandButton
.hoverClass()
.downClass()
;
$userListButton
.hoverClass()
.downClass()
;
$messageButton
.hoverClass()
.downClass()
;
}
// bind module events
$userListButton
.on('click.' + namespace, module.event.toggleUserList)
;
$expandButton
.on('click.' + namespace, module.event.toggleExpand)
;
$messageInput
.on('keydown.' + namespace, module.event.input.keydown)
.on('keyup.' + namespace, module.event.input.keyup)
;
$messageButton
.on('mouseenter.' + namespace, module.event.hover)
.on('mouseleave.' + namespace, module.event.hover)
.on('click.' + namespace, module.event.submit)
;
// scroll to bottom of chat log
$log
.animate({
scrollTop: $log.prop('scrollHeight')
}, 400)
;
$module
.data('module', module)
.addClass(className.loading)
;
},
// refresh module
refresh: function() {
// reset width calculations
$userListButton
.removeClass(className.active)
;
module.width = {
log : $log.width(),
userList : $userList.outerWidth()
};
if( $userListButton.hasClass(className.active) ) {
module.user.list.hide();
}
$module.data('module', module);
},
user: {
updateCount: function() {
if(settings.userCount) {
users = $module.data('users');
count = 0;
$.each(users, function(index){
count++;
});
$userCount
.html( settings.templates.userCount(count) )
;
}
},
// add user to user list
joined: function(member) {
users = $module.data('users');
if(member.id != 'anonymous' && users[ member.id ] === undefined ) {
users[ member.id ] = member.info;
if(settings.randomColor && member.info.color === undefined) {
member.info.color = settings.templates.color(member.id);
}
html = settings.templates.userList(member.info);
if(member.info.isAdmin) {
$(html)
.prependTo($userList)
.preview({
type : 'user',
placement : 'left'
})
;
}
else {
$(html)
.appendTo($userList)
.preview({
type : 'user',
placement : 'left'
})
;
}
if( $.fn.preview !== undefined ) {
$userList
.children()
.last()
.preview({
type: 'user',
placement: 'left'
})
;
}
if(settings.partingMessages) {
$log
.append( settings.templates.joined(member.info) )
;
module.message.scroll.test();
}
module.user.updateCount();
}
},
// remove user from user list
left: function(member) {
users = $module.data('users');
if(member !== undefined && member.id !== 'anonymous') {
delete users[ member.id ];
$module
.data('users', users)
;
$userList
.find('[data-id='+ member.id + ']')
.remove()
;
if(settings.partingMessages) {
$log
.append( settings.templates.left(member.info) )
;
module.message.scroll.test();
}
module.user.updateCount();
}
},
list: {
// receives list of members and generates user list
create: function(members) {
users = {};
members.each(function(member) {
if(member.id !== 'anonymous' && member.id !== 'undefined') {
if(settings.randomColor && member.info.color === undefined) {
member.info.color = settings.templates.color(member.id);
}
// sort list with admin first
html = (member.info.isAdmin)
? settings.templates.userList(member.info) + html
: html + settings.templates.userList(member.info)
;
users[ member.id ] = member.info;
}
});
$module
.data('users', users)
.data('user', users[members.me.id] )
.removeClass(className.loading)
;
$userList
.html(html)
;
if( $.fn.preview !== undefined ) {
$userList
.children()
.preview({
type: 'user',
placement: 'left'
})
;
}
module.user.updateCount();
$.proxy(settings.onJoin, $userList.children())();
},
// shows user list
show: function() {
$log
.animate({
width: (module.width.log - module.width.userList)
}, {
duration : settings.speed,
easing : settings.easing,
complete : module.message.scroll.move
})
;
},
// hides user list
hide: function() {
$log
.stop()
.animate({
width: (module.width.log)
}, {
duration : settings.speed,
easing : settings.easing,
complete : module.message.scroll.move
})
;
}
}
},
message: {
// handles scrolling of chat log
scroll: {
test: function() {
height = $log.prop('scrollHeight') - $log.height();
if( Math.abs($log.scrollTop() - height) < settings.scrollArea) {
module.message.scroll.move();
}
},
move: function() {
height = $log.prop('scrollHeight') - $log.height();
$log
.scrollTop(height)
;
}
},
// sends chat message
send: function(message) {
if( !module.utils.emptyString(message) ) {
$.api({
url : settings.endpoint.message,
method : 'POST',
data : {
'chat_message': {
content : message,
timestamp : new Date().getTime()
}
}
});
}
},
// receives chat response and processes
receive: function(response) {
message = response.data;
users = $module.data('users');
loggedInUser = $module.data('user');
if(users[ message.userID] !== undefined) {
// logged in user's messages already pushed instantly
if(loggedInUser === undefined || loggedInUser.id != message.userID) {
message.user = users[ message.userID ];
module.message.display(message);
}
}
},
// displays message in chat log
display: function(message) {
$log
.append( settings.templates.message(message) )
;
module.message.scroll.test();
$.proxy(settings.onMessage, $log.children().last() )();
}
},
expand: function() {
$module
.addClass(className.expand)
;
$.proxy(settings.onExpand, $module )();
module.refresh();
},
contract: function() {
$module
.removeClass(className.expand)
;
$.proxy(settings.onContract, $module )();
module.refresh();
},
event: {
input: {
keydown: function(event) {
if(event.which == 13) {
$messageButton
.addClass(className.down)
;
}
},
keyup: function(event) {
if(event.which == 13) {
$messageButton
.removeClass(className.down)
;
module.event.submit();
}
}
},
// handles message form submit
submit: function() {
var
message = $messageInput.val(),
loggedInUser = $module.data('user')
;
if(loggedInUser !== undefined && !module.utils.emptyString(message)) {
module.message.send(message);
// display immediately
module.message.display({
user: loggedInUser,
text: message
});
module.message.scroll.move();
$messageInput
.val('')
;
}
},
// handles button click on expand button
toggleExpand: function() {
if( !$module.hasClass(className.expand) ) {
$expandButton
.addClass(className.active)
;
module.expand();
}
else {
$expandButton
.removeClass(className.active)
;
module.contract();
}
},
// handles button click on user list button
toggleUserList: function() {
if( !$log.is(':animated') ) {
if( !$userListButton.hasClass(className.active) ) {
$userListButton
.addClass(className.active)
;
module.user.list.show();
}
else {
$userListButton
.removeClass('active')
;
module.user.list.hide();
}
}
}
},
utils: {
emptyString: function(string) {
if(typeof string == 'string') {
return (string.search(/\S/) == -1);
}
return false;
}
},
// standard methods
debug: function(message) {
if(settings.debug) {
console.info(settings.moduleName + ': ' + message);
}
},
error: function(errorMessage) {
console.warn(settings.moduleName + ': ' + errorMessage);
},
invoke: function(methodName, context, methodArguments) {
var
method
;
methodArguments = methodArguments || Array.prototype.slice.call( arguments, 2 );
if(typeof methodName == 'string' && instance !== undefined) {
methodName = methodName.split('.');
$.each(methodName, function(index, name) {
if( $.isPlainObject( instance[name] ) ) {
instance = instance[name];
return true;
}
else if( $.isFunction( instance[name] ) ) {
method = instance[name];
return true;
}
module.error(settings.errors.method);
return false;
});
}
return ( $.isFunction( method ) )
? method.apply(context, methodArguments)
: false
;
}
};
if(instance !== undefined && moduleArguments) {
// simpler than invoke realizing to invoke itself (and losing scope due prototype.call()
if(moduleArguments[0] == 'invoke') {
moduleArguments = Array.prototype.slice.call( moduleArguments, 1 );
}
return module.invoke(moduleArguments[0], this, Array.prototype.slice.call( moduleArguments, 1 ) );
}
// initializing
module.initialize();
})
;
return this;
};
$.fn.chat.settings = {
moduleName : 'Chat Module',
debug : false,
namespace : 'chat',
onJoin : function(){},
onMessage : function(){},
onExpand : function(){},
onContract : function(){},
customEvents : {},
partingMessages : false,
userCount : true,
randomColor : true,
speed : 300,
easing : 'easeOutQuint',
// pixels from bottom of chat log that should trigger auto scroll to bottom
scrollArea : 9999,
endpoint : {
message : false,
authentication : false
},
errors: {
method : 'The method you called is not defined',
endpoint : 'Please define a message and authentication endpoint.',
key : 'You must specify a pusher key and channel.',
pusher : 'You must include the Pusher library.'
},
className : {
expand : 'expand',
active : 'active',
hover : 'hover',
down : 'down',
loading : 'loading'
},
selector : {
userCount : '.actions .message',
userListButton : '.actions .button.user-list',
expandButton : '.actions .button.expand',
room : '.room',
userList : '.room .user-list',
log : '.room .log',
message : '.room .log .message',
author : '.room log .message .author',
messageInput : '.talk input',
messageButton : '.talk .send.button'
},
templates: {
userCount: function(number) {
return number + ' users in chat';
},
color: function(userID) {
var
colors = [
'#000000',
'#333333',
'#666666',
'#999999',
'#CC9999',
'#CC6666',
'#CC3333',
'#993333',
'#663333',
'#CC6633',
'#CC9966',
'#CC9933',
'#999966',
'#CCCC66',
'#99CC66',
'#669933',
'#669966',
'#33A3CC',
'#336633',
'#33CCCC',
'#339999',
'#336666',
'#336699',
'#6666CC',
'#9966CC',
'#333399',
'#663366',
'#996699',
'#993366',
'#CC6699'
]
;
return colors[ Math.floor( Math.random() * colors.length) ];
},
message: function(message) {
var
html = ''
;
if(message.user.isAdmin) {
message.user.color = '#55356A';
html += '<div class="admin message">';
html += '<span class="quirky ui flag team"></span>';
}
/*
else if(message.user.isPro) {
html += '<div class="indent message">';
html += '<span class="quirky ui flag pro"></span>';
}
*/
else {
html += '<div class="message">';
}
html += '<p>';
if(message.user.color !== undefined) {
html += '<span class="author" style="color: ' + message.user.color + ';">' + message.user.name + '</span>: ';
}
else {
html += '<span class="author">' + message.user.name + '</span>: ';
}
html += ''
+ message.text
+ ' </p>'
+ '</div>'
;
return html;
},
joined: function(member) {
return (typeof member.name !== undefined)
? '<div class="status">' + member.name + ' has joined the chat.</div>'
: false
;
},
left: function(member) {
return (typeof member.name !== undefined)
? '<div class="status">' + member.name + ' has left the chat.</div>'
: false
;
},
userList: function(member) {
var
html = ''
;
if(member.isAdmin) {
member.color = '#55356A';
}
html += ''
+ '<div class="user" data-id="' + member.id + '">'
+ ' <div class="image">'
+ ' <img src="' + member.avatarURL + '">'
+ ' </div>'
;
if(member.color !== undefined) {
html += ' <p><a href="/users/' + member.id + '" target="_blank" style="color: ' + member.color + ';">' + member.name + '</a></p>';
}
else {
html += ' <p><a href="/users/' + member.id + '" target="_blank">' + member.name + '</a></p>';
}
html += '</div>';
return html;
}
}
};
})( jQuery, window , document );