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