Added function to switch to a different pad without having to reload the whole page.

src/node/handler/PadMessageHandler.js

@@ -217,6 +217,8 @@ exports.handleMessage = function(client, message)
       } else {
         messageLogger.warn("Dropped message, unknown COLLABROOM Data  Type " + message.data.type);
       }
+    } else if(message.type == "CLEAR_SESSION_INFO") {
+      handleClearSessionInfo(client, message);
     } else {
       messageLogger.warn("Dropped message, unknown Message Type " + message.type);
     }
@@ -872,6 +874,32 @@ function _correctMarkersInPad(atext, apool) {
   return builder.toString();
 }
 
+function handleClearSessionInfo(client, message)
+{
+  var infoMsg = {
+          type: "COLLABROOM",
+          data: {
+            type: "CLEAR_CHAT_MESSAGES"
+          }
+        };
+
+  // send the messages back to the client to clear the chat messages
+  client.json.send(infoMsg);
+
+  // clear the session and leave the room
+  var currentSession = sessioninfos[client.id];
+  var padId = currentSession.padId;
+  var roomClients = socketio.sockets.clients(padId);
+  for(var i = 0; i < roomClients.length; i++) {
+    var sinfo = sessioninfos[roomClients[i].id];
+    if(sinfo && sinfo == currentSession) {
+      // fix user's counter, works on page refresh or if user closes browser window and then rejoins
+      sessioninfos[roomClients[i].id] = {};
+      roomClients[i].leave(padId);
+    }
+  }
+}
+
 /**
  * Handles a CLIENT_READY. A CLIENT_READY is the first message from the client to the server. The Client sends his token
  * and the pad it wants to enter. The Server answers with the inital values (clientVars) of the pad

src/static/js/chat.js

@@ -79,6 +79,10 @@ var chat = (function()
       this._pad.collabClient.sendMessage({"type": "CHAT_MESSAGE", "text": text});
       $("#chatinput").val("");
     },
+    clearChatMessages: function()
+    {
+      $('#chattext p').remove();
+    },
     addMessage: function(msg, increment, isHistoryAdd)
     {
       //correct the time

src/static/js/collab_client.js

@@ -388,6 +388,10 @@ function getCollabClient(ace2editor, serverVars, initialUserInfo, options, _pad)
     {
       chat.addMessage(msg, true, false);
     }
+    else if (msg.type == "CLEAR_CHAT_MESSAGES")
+    {
+      chat.clearChatMessages();
+    }
     else if (msg.type == "CHAT_MESSAGES")
     {
       for(var i = msg.messages.length - 1; i >= 0; i--)

src/static/js/pad.js

@@ -51,6 +51,8 @@ var gritter = require('./gritter').gritter;
 
 var hooks = require('./pluginfw/hooks');
 
+var receivedClientVars = false;
+
 function createCookie(name, value, days, path){ /* Warning Internet Explorer doesn't use this it uses the one from pad_utils.js */
   if (days)
   {
@@ -160,29 +162,28 @@ function savePassword()
   return false;
 }
 
-function handshake()
+function sendClearSessionInfo()
 {
-  var loc = document.location;
-  //get the correct port
-  var port = loc.port == "" ? (loc.protocol == "https:" ? 443 : 80) : loc.port;
-  //create the url
-  var url = loc.protocol + "//" + loc.hostname + ":" + port + "/";
-  //find out in which subfolder we are
-  var resource =  exports.baseURL.substring(1)  + "socket.io";
-  //connect
-  socket = pad.socket = io.connect(url, {
-    resource: resource,
-    'max reconnection attempts': 3,
-    'sync disconnect on unload' : false
-  });
+  var msg = {
+    "component": "pad",
+    "type": "CLEAR_SESSION_INFO",
+    "protocolVersion": 2
+  };
   
-  function sendClientReady(isReconnect)
-  {
+  socket.json.send(msg);
+}
+
+function sendClientReady(isReconnect)
+{
   var padId = document.location.pathname.substring(document.location.pathname.lastIndexOf("/") + 1);
   padId = decodeURIComponent(padId); // unescape neccesary due to Safari and Opera interpretation of spaces
 
   if(!isReconnect)
-      document.title = padId.replace(/_+/g, ' ') + " | " + document.title;
+  {
+    var titleArray = document.title.split('|');
+    var title = titleArray[titleArray.length - 1];
+    document.title = padId.replace(/_+/g, ' ') + " | " + title;
+  }
 
   var token = readCookie("token");
   if (token == null)
@@ -212,7 +213,23 @@ function handshake()
   }
   
   socket.json.send(msg);
-  };
+}
+
+function handshake()
+{
+  var loc = document.location;
+  //get the correct port
+  var port = loc.port == "" ? (loc.protocol == "https:" ? 443 : 80) : loc.port;
+  //create the url
+  var url = loc.protocol + "//" + loc.hostname + ":" + port + "/";
+  //find out in which subfolder we are
+  var resource =  exports.baseURL.substring(1)  + "socket.io";
+  //connect
+  socket = pad.socket = io.connect(url, {
+    resource: resource,
+    'max reconnection attempts': 3,
+    'sync disconnect on unload' : false
+  });
 
   var disconnectTimeout;
 
@@ -228,7 +245,7 @@ function handshake()
     }
 
     pad.collabClient.setChannelState("CONNECTED");
-    sendClientReady(true);
+    pad.sendClientReady(true);
   });
   
   socket.on('disconnect', function (reason) {
@@ -246,7 +263,6 @@ function handshake()
     }
   });
 
-  var receivedClientVars = false;
   var initalized = false;
 
   socket.on('message', function(obj)
@@ -286,7 +302,7 @@ function handshake()
     }
     
     //if we haven't recieved the clientVars yet, then this message should it be
-    else if (!receivedClientVars)
+    else if (!receivedClientVars && obj.type == "CLIENT_VARS")
     {
       //log the message
       if (window.console) console.log(obj);
@@ -426,6 +442,22 @@ var pad = {
   {
     return pad.myUserInfo.name;
   },
+  sendClientReady: function(isReconnect)
+  {
+    sendClientReady(isReconnect);
+  },
+  switchToPad: function(padId)
+  {
+    var options = document.location.href.split('?')[1];
+    if(options != null)
+      window.history.pushState("", "", "/p/" + padId + '?' + options);
+    else
+      window.history.pushState("", "", "/p/" + padId);
+    
+    sendClearSessionInfo();
+    receivedClientVars = false;
+    sendClientReady(false);
+  },
   sendClientMessage: function(msg)
   {
     pad.collabClient.sendClientMessage(msg);