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// $Id: chatroom.js,v 1.50.4.9 2009/10/29 21:13:48 justinrandell Exp $
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Drupal.chatroom = Drupal.chatroom || {};
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/**
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* Add behaviours to chatroom elements.
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*/
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Drupal.behaviors.chatroom = function(context) {
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// This is the 'are there any new messages' polling.
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setInterval("Drupal.chatroom.poll()", Drupal.settings.chatroom.pollInterval * 1000);
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// Add behaviour to the 'send a message' field.
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$('#chatroom-chat-message-submit').keyup(function (e) {
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var key = e.charCode ? e.charCode : e.keyCode ? e.keyCode : 0;
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var messageText = $('#chatroom-chat-message-submit').val();
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if (key == 13) {
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if (messageText) {
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Drupal.chatroom.postMessage(messageText);
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$('#chatroom-chat-message-submit').val('');
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}
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}
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});
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if (Drupal.settings.chatroom.latestMsgId > 0) {
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var boardOffset = $('#chatroom-board').offset().top;
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var targetOffset = $('div.new-message:last').offset().top;
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var scrollAmount = targetOffset - boardOffset;
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$('#chatroom-board').animate({scrollTop: '+='+ scrollAmount +'px'}, 500);
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$('.new-message').removeClass('new-message');
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}
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Drupal.settings.chatroom.pageTitle = document.title;
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Drupal.settings.chatroom.hasFocus = true;
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$(self).focus(
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function() {
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clearInterval(Drupal.settings.chatroom.warnInterval);
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Drupal.settings.chatroom.hasFocus = true;
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document.title = Drupal.settings.chatroom.pageTitle;
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}
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);
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$(self).blur(
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function() {
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Drupal.settings.chatroom.hasFocus = false;
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}
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);
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};
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Drupal.chatroom.poll = function() {
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var skipCacheCheck = 0;
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if (Drupal.settings.chatroom.successiveCacheHits > Drupal.settings.chatroom.skipCacheCheckCount) {
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skipCacheCheck = 1;
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}
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$.ajax({
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type: 'POST',
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url: Drupal.settings.basePath + 'chatroomread.php',
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dataType: 'json',
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success: Drupal.chatroom.pollHandler,
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data: {
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latest_msg_id: Drupal.settings.chatroom.latestMsgId,
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chat_cache_directory: Drupal.settings.chatroom.cacheDirectory,
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chat_id: Drupal.settings.chatroom.chatId,
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skip_cache: skipCacheCheck,
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successive_cache_hits: Drupal.settings.chatroom.successiveCacheHits,
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}
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});
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};
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Drupal.chatroom.pollHandler = function(response, responseStatus) {
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// If the chat was archived, reload the page.
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if (response.data.archived) {
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window.location = Drupal.settings.basePath + Drupal.settings.chatroom.chatPath;
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}
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// If we hit the cache, then keep track of that. If the number of
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// successive cache hits gets high enough, we may want to signal to the
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// server that we should skip the cache check so that our online time
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// gets updated.
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if (response.data.cacheHit) {
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Drupal.settings.chatroom.successiveCacheHits++;
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}
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else {
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Drupal.settings.chatroom.successiveCacheHits = 0;
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}
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// Add any messages we haven't already seen to the board. Poll requests can
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// pass each other over the wire, so we can't rely on getting a given
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// message once only.
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var newMessage = false;
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for (var i = 0; i < response.data.messages.length; i++) {
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if (response.data.messages[i].cmid > Drupal.settings.chatroom.latestMsgId) {
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$('#chatroom-board').append(response.data.messages[i].html);
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Drupal.settings.chatroom.latestMsgId = response.data.messages[i].cmid;
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newMessage = response.data.messages[i];
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}
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}
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if (newMessage) {
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var boardOffset = $('#chatroom-board').offset().top;
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var targetOffset = $('div.new-message:last').offset().top;
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var scrollAmount = targetOffset - boardOffset;
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$('#chatroom-board').animate({scrollTop: '+='+ scrollAmount +'px'}, 500);
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$('.new-message').removeClass('new-message');
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if (Drupal.settings.chatroom.hasFocus == false) {
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Drupal.settings.chatroom.newMsg = newMessage;
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clearInterval(Drupal.settings.chatroom.warnInterval);
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Drupal.settings.chatroom.warnInterval = setInterval("Drupal.chatroom.warnNewMsgLoop()", 1500);
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}
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}
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if (response.data.usersHtml) {
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$('#chatroom-user-list').html(response.data.usersHtml);
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}
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};
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Drupal.chatroom.postMessage = function(message) {
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$.ajax({
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type: 'POST',
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url: Drupal.settings.basePath + Drupal.settings.chatroom.postMessagePath + '/' + Drupal.settings.chatroom.chatId + '/' + Drupal.settings.chatroom.latestMsgId,
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dataType: 'json',
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success: Drupal.chatroom.pollHandler,
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data: { message: message }
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})
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}
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/**
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* Toggle message alert status.
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*/
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Drupal.chatroom.setMsgAlerts = function(obj) {
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if ($(obj).attr('checked')) {
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Drupal.settings.chatroom.msgAlerts = true;
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}
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else {
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Drupal.settings.chatroom.msgAlerts = false;
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}
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}
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Drupal.chatroom.warnNewMsgLoop = function() {
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if (document.title == Drupal.settings.chatroom.pageTitle) {
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document.title = Drupal.settings.chatroom.newMsg.name + ' says: ' + Drupal.settings.chatroom.newMsg.text;
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}
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else {
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document.title = Drupal.settings.chatroom.pageTitle;
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}
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}
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// vi:ai:expandtab:sw=2 ts=2
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