/mod/elggchat/views/default/elggchat/js.php

<?php

	/**

	* ElggChat - Pure Elgg-based chat/IM

	* 

	* All the javascript/JQuery functions are in this file

	* 

	* @package elggchat

	* @author ColdTrick IT Solutions

	* @copyright Coldtrick IT Solutions 2009

	* @link http://www.coldtrick.com/

	* @version 0.4

	*/



	/*<a href='javascript:inviteFriends(" + i + ")'><?php echo strtolower(elgg_echo("elggchat:chat:invite")); ?></a>*/



	require_once(dirname(dirname(dirname(dirname(dirname(dirname(__FILE__)))))) . "/engine/start.php");

	

	global $CONFIG;

	$basesec = get_plugin_setting("chatUpdateInterval","elggchat");

	if(!$basesec) $basesec = 5;

	$maxsecs = get_plugin_setting("maxChatUpdateInterval","elggchat");

	if(!$maxsecs) $maxsecs = 30;

	

	$sound = get_plugin_setting("enableSounds","elggchat");

	if(empty($sound)) $sound = "no";

	

	$flash = get_plugin_setting("enableFlashing","elggchat");

	if(empty($flash)) $flash = "no";



	header('Content-type: text/javascript');

?>



	var basesec = <?php echo $basesec;?>;

	var maxsecs = <?php echo $maxsecs;?>;

	var delay = 1000;

	

	var secs;

	var processing = false;

	var pollingPause = false;

	

	var lastTimeDataReceived = new Date().getTime();

    

	function InitializeTimer(){

		// Set the length of the timer, in seconds

		secs = basesec;

		tick();

		<?php if($flash == "yes"){?>

		blink_new();

		<?php }?>

	}

	

	function blink_new(){

		$(".elggchat_session_new_messages").toggleClass("elggchat_session_new_messages_blink");

	

		self.setTimeout("blink_new()", 1000);

	}



	function tick(){

		if(!pollingPause){

			if(!processing){

				if (secs == 0){

					checkForSessions();					

				} else {

					secs = secs - 1;

				}

			} else {

				resetTimer();

			}

			

			self.setTimeout("tick()", delay);

		}

	}

	

	function resetTimer(){

		// if needed apply multiplier

		var currentTimeStamp = new Date().getTime();

		var timeDiff = (currentTimeStamp - lastTimeDataReceived) / 1000;

		

		var interval = Math.ceil((Math.sqrt(Math.pow(basesec * 10 / 2, 2) + (2 * basesec * 10 * timeDiff)) - (basesec * 10 / 2)) / (basesec * 10));

		// reset secs

		secs = basesec * interval;

		if(secs > maxsecs){

			secs = maxsecs;

		}

	}

		

	function inviteFriends(sessionid){

		var currentChatWindow = $("#" + sessionid + " .chatmembersfunctions_invite"); 

		if(currentChatWindow.css("display") != "block"){

			currentChatWindow.html("");

			$("#elggchat_friends_picker .chatmemberinfo").each(function(){

				var friend = $(this).find("a");

				if(!($("#" + sessionid + " .chatmember a[rel='" + friend.attr('rel') + "']").length > 0)){

					newFriend = "<a href='javascript:addFriend(" + sessionid + ", " + friend.attr('rel') + ")'>";

					newFriend += friend.html();

					newFriend += "</a><br />";

					currentChatWindow.append(newFriend);

				}

			});

		}

		currentChatWindow.slideToggle();

	}

	

	function addFriend(sessionid, friend){

		$.post("<?php echo $CONFIG->wwwroot; ?>action/elggchat/invite?chatsession=" + sessionid + "&friend=" + friend, function(){

			$("#" + sessionid + " .chatmembersfunctions_invite").toggle();

			checkForSessions();

			$("#" + sessionid + " input[name='chatmessage']").focus();

		});

	}	

	

	function leaveSession(sessionid){

		if(confirm("<?php echo elgg_echo('elggchat:chat:leave:confirm');?>")){

			eraseCookie("elggchat_session_" + sessionid);

			var current = readCookie("elggchat");

			if(current == sessionid){

				eraseCookie("elggchat");

			}

			$.post("<?php echo $CONFIG->wwwroot; ?>action/elggchat/leave?chatsession=" + sessionid, function(){

				$("#" + sessionid).remove();

				checkForSessions();

			});

		} 

	}

	

	function elggchat_toolbar_resize(){

		$("#elggchat_toolbar_left").css("width", $(window).width() - $("#toggle_elggchat_toolbar").width());



	}

	

	/*function toggleChatToolbar(speed){

		$('#elggchat_toolbar_left').toggle(speed);

		$('#toggle_elggchat_toolbar').toggleClass('minimizedToolbar');

		

		if($('#toggle_elggchat_toolbar').hasClass('minimizedToolbar')){

			createCookie("elggchat_toolbar_minimized", "true");

			pollingPause = true;

			$('#toggle_elggchat_toolbar').attr("title", "<?php echo elgg_echo("elggchat:toolbar:maximize");?>");

		} else {

			pollingPause = false;

			checkForSessions();

			tick();

			eraseCookie("elggchat_toolbar_minimized");

			$('#toggle_elggchat_toolbar').attr("title", "<?php echo elgg_echo("elggchat:toolbar:minimize");?>");

		}

	}*/

	

	function startSession(friendGUID){

		$.post('<?php echo $CONFIG->wwwroot;?>action/elggchat/create?invite=' + friendGUID, function(data){

			if(data){

				checkForSessions();

				openSession(data);

			}

		});

	}

	

	function toggleFriendsPicker(){

		$("#elggchat_friends_picker").slideToggle();

	}

	

	function scroll_to_bottom(sessionid){

		var chat_window = $("#" + sessionid +" .chatsessiondata");

		var scrHeight = chat_window.find(".chatmessages").attr("scrollHeight");

		chat_window.find(".chatmessages").attr("scrollTop", scrHeight);

	}

	

	function notify_new_message(){

		<?php if($sound == "yes"){?>

		$.sound.play("<?php echo $CONFIG->wwwroot; ?>mod/elggchat/js/sound/new_message.wav");

		<?php }?>

	}

	

	function checkForSessions(firsttime){

		if (typeof firsttime == "undefined") {

		    firsttime = false;

		}

				

		

		// Starting the work, so stop the timer

		processing = true;

		

		$.getJSON("<?php echo $CONFIG->wwwroot; ?>action/elggchat/poll", function(data){

			if(typeof(data.sessions) != "undefined"){

				var current = readCookie("elggchat");

				

				$.each(data.sessions, function(i, session){

					var sessionExists = false;

					$("#" + i).each(function(){

						sessionExists = true;

					});

					if( (i != current || sessionExists == false) ){

						

						var newSession = "";

						

						newSession += "<div class='elggchat_session_leave' onclick='leaveSession(" + i + ")' title='<?php echo elgg_echo("elggchat:chat:leave");?>'></div><a href='javascript:openSession(" + i + ")'>" + session.name + "</a>";

						newSession += "<div class='chatsessiondatacontainer'>";

						newSession += "<div class='chatsessiondata'>"; 

							newSession += "<div class='chatmembers'><table>";

							if(typeof(session.members) != "undefined"){

								$.each(session.members, function(memNum, member){

									newSession += member;

									

								});

							}

							

							newSession += "</table></div>";

							newSession += "<div class='chatmembersfunctions' style='background-color:white;'>";

														

							newSession += "</div><div class='chatmembersfunctions_invite'></div>";

							

							newSession += "<div class='chatmessages'>";

							if(typeof(session.messages) != "undefined"){

								$.each(session.messages, function(msgNum, msg){

									newSession += msg;

								});

							}

							newSession += "</div>";

							newSession += "<div class='elggchatinput'>";

							newSession += "<form>";

							newSession += "<input name='chatsession' type='hidden' value='" + i + "'></input>";	

							newSession += "<input name='chatmessage' type='text' autocomplete='off'></input>";						

							newSession += "</form>";

							newSession += "</div>";

						newSession += "</div>";	

						newSession += "</div>";

						if(sessionExists){

                              	$("#" + i).html(newSession);

						} else {

							newSession = "<div class='session' id='" + i + "'>" + newSession + "</div>";

							$("#elggchat_sessions").append(newSession);

						}

					} else {

						$("#" + i + ">a").html(session.name);

						var membersData = "";

						if(typeof(session.members) != "undefined"){

							$.each(session.members, function(memNum, member){

								membersData += member;

							});

						}

						$("#" + i + " .chatmembers").html("<table>" + membersData + "</table>");

						

						var messageData = "";

						var cookie = readCookie("elggchat_session_" + i);

						

						var lastKnownMsgId = 0;

						if(cookie > 0){

							var lastKnownMsgId = parseInt(readCookie("elggchat_session_" + i));

						} 

						

						if(typeof(session.messages) != "undefined"){

							$.each(session.messages, function(msgNum, msg){

								if(msgNum > lastKnownMsgId || lastKnownMsgId == NaN){

									messageData += msg;

									lastTimeDataReceived = new Date().getTime();

								}

							});

						}

						$("#" + i + " .chatmessages").append(messageData);						

					}

				});

				

				// search for new data

				$(".session").each(function(){

				

					var sessionid = $(this).attr("id");

					var lastKnownMsgId = parseInt(readCookie("elggchat_session_" + sessionid));

					var newestMsgId = parseInt($("#" + sessionid + " .chatmessages div:last").attr("id"));

					

					if(newestMsgId > lastKnownMsgId || !lastKnownMsgId){

						if($(this).find(".chatsessiondatacontainer").css("display") != "block" && newestMsgId){

							if(!($("#" + sessionid).hasClass("elggchat_session_new_messages")) && !firsttime){	

								notify_new_message();

							}

							$("#" + sessionid).addClass("elggchat_session_new_messages");

								

							lastTimeDataReceived = new Date().getTime();

							

						}

					}

				

				});

				

				// register submit events on message input

				$(".elggchatinput form").unbind("submit");

				$(".elggchatinput form").bind("submit", function(){

					var input = $.trim($(this).find("input[name='chatmessage']").val());

					

					if(input != ""){

						$.post("<?php echo $CONFIG->wwwroot;?>action/elggchat/post_message", $(this).serialize(), function(data){

							checkForSessions();

						});

					}

					// empty input field

					$(this).find("input[name='chatmessage']").val("");

					

					return false;

				});

				

				if(current){

					if($("#" + current + " .chatsessiondatacontainer").css("display") != "block"){

						openSession(current);

					}

					var cookie = readCookie("elggchat_session_" + current);

					if(cookie > 0){

						var lastKnownMsgId = parseInt(cookie);

					} else {

						var lastKnownMsgId = 0;

					}

					var newestMsgId = parseInt($("#" + current + " .chatmessages div:last").attr("id"));

					if(newestMsgId > lastKnownMsgId){

						scroll_to_bottom(current);

						createCookie("elggchat_session_" + current, newestMsgId);

					}

				}

				

			}

			

			// build friendspicker

                        try {

                            $("#elggchat_friends a").html("<?php echo elgg_echo("elggchat:friendspicker:info");?> (" + data.friends.online.length + ")");

                        } catch( e ) {

                            $("#elggchat_friends a").html("<?php echo elgg_echo("elggchat:friendspicker:info");?> (0)");

                        }

			if(typeof(data.friends) != "undefined"){

				$("#elggchat_friends_picker").html("");

				

				var tableDataOnline = "";

				var numOnline = data.friends.online.length;

				$.each(data.friends.online, function(i, friend){

					tableDataOnline += friend;

					

				});

				

				var tableDataOffline = "";

				var numOffline = data.friends.offline.length;

				$.each(data.friends.offline, function(i, friend){

					tableDataOffline += friend;

				});

				

				$("#elggchat_friends_picker").append("<h3 class='settings'><?php echo elgg_echo('elggchat:friendspicker:online');?> (" + numOnline + ")</h3><table>"  + tableDataOnline + "</table><h3 class='settings'><?php echo elgg_echo('elggchat:friendspicker:offline');?> (" + numOffline + ")</h3><table>" + tableDataOffline + "</table>");

				

				$("#elggchat_friends_picker a").each(function(){

					$(this).attr("href","javascript:startSession(" + this.rel + "); toggleFriendsPicker();");

				});

			}

			

			// Done with all the work

			resetTimer();

			processing = false;

		});

	}

	

	function openSession(id){

		$("#"+ id).removeClass("elggchat_session_new_messages");

		var current = $("#" + id + " .chatsessiondatacontainer").css("display");

		eraseCookie("elggchat");

		$("#elggchat_sessions .chatsessiondatacontainer").hide();

		if(current != "block"){

			createCookie("elggchat", id);

			var last = $("#" + id + " .chatmessages div:last").attr("id");

			createCookie("elggchat_session_" + id, last); 

			$("#" + id + " .chatsessiondatacontainer").toggle();

		}	

		scroll_to_bottom(id);

		$("#" + id + " input[name='chatmessage']").focus();

	}

	

	/* Cookie Functions */

	function createCookie(name, value, days) {

		if (days) {

			var date = new Date();

			date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));

			var expires = "Expires=" + date.toGMTString() + "; ";

		} else {

			var expires = "";

		}

		

		document.cookie = name + "=" + value + "; " + expires + "Path=/;";

	}



	function readCookie(name) {

		var nameEQ = name + "=";

		var ca = document.cookie.split(';');



		for(var i = 0; i < ca.length; i++) {

			var c = ca[i];



			while (c.charAt(0) == ' '){

				c = c.substring(1, c.length);

			}

			

			if (c.indexOf(nameEQ) == 0){

				return c.substring(nameEQ.length, c.length);

			}

		}

		return null;

	}



	function eraseCookie(name) {

		createCookie(name, "", -1);

	}	

	

    var $j = jQuery.noConflict();

    

	$j(document).ready(function(){

		/*if(readCookie("elggchat_toolbar_minimized")){

			toggleChatToolbar(0);

		}

		*/

        

		$j(window).resize(function(){

			elggchat_toolbar_resize();

		});

		elggchat_toolbar_resize();

		InitializeTimer();

		checkForSessions(true);

	});

    

    /*$j(document).click(function(){

        if( $j('#latest_river').is(':visible') ) {

           	$j('#latest_river').hide('slow');

        }

    });*/