added a Chat

static/js/chat.js

@@ -0,0 +1,94 @@
+var chat = (function()
+{
+  var self = {
+    show: function () 
+    {      
+      $("#chaticon").hide("slide", { direction: "down" }, 500, function()
+      {
+        $("#chatbox").show("slide", { direction: "down" }, 750, self.scrollDown);
+      });
+    },
+    hide: function () 
+    {
+      $("#chatcounter").text("0");
+      $("#chatbox").hide("slide", { direction: "down" }, 750, function()
+      {
+        $("#chaticon").show("slide", { direction: "down" }, 500);
+      });
+    },
+    scrollDown: function()
+    {
+      console.log($('#chatbox').css("display"));
+    
+      if($('#chatbox').css("display") != "none")
+        $('#chattext').animate({scrollTop: $('#chattext')[0].scrollHeight}, "slow");
+    }, 
+    send: function()
+    {
+      var text = $("#chatinput").val();
+      pad.collabClient.sendMessage({"type": "CHAT_MESSAGE", "text": text});
+      $("#chatinput").val("");
+    },
+    addMessage: function(msg, increment)
+    {    
+      //correct the time
+      msg.time += pad.clientTimeOffset; 
+      
+      //create the time string
+      var minutes = "" + new Date(msg.time).getMinutes();
+      var hours = "" + new Date(msg.time).getHours();
+      if(minutes.length == 1)
+        minutes = "0" + minutes ;
+      if(hours.length == 1)
+        hours = "0" + hours ;
+      var timeStr = hours + ":" + minutes;
+        
+      //create the authorclass
+      var authorClass = "author-" + msg.userId.replace(/[^a-y0-9]/g, function(c)
+      {
+        if (c == ".") return "-";
+        return 'z' + c.charCodeAt(0) + 'z';
+      });
+
+      var text = padutils.escapeHtmlWithClickableLinks(padutils.escapeHtml(msg.text), "_blank");
+      var authorName = msg.userName == null ? "unnamed" : padutils.escapeHtml(msg.userName); 
+      
+      var html = "<p class='" + authorClass + "'><b>" + authorName + ":</b><span class='time'>" + timeStr + "</span> " + text + "</p>";
+      $("#chattext").append(html);
+      
+      //should we increment the counter??
+      if(increment)
+      {
+        var count = Number($("#chatcounter").text());
+        count++;
+        $("#chatcounter").text(count);
+        
+        //animation
+        $("#chatcounter").css({"font-weight": "bold"});
+        setTimeout('$("#chatcounter").css({"font-weight": "normal"})', 500);
+      }
+      
+      self.scrollDown();
+    },
+    init: function()
+    {
+      $("#chatinput").keypress(function(evt)
+      {
+        //if the user typed enter, fire the send
+        if(evt.which == 13)
+        {
+          evt.preventDefault();
+          self.send();
+        }
+      });
+      
+      for(var i in clientVars.chatHistory)
+      {
+        this.addMessage(clientVars.chatHistory[i], false);
+      }
+      $("#chatcounter").text(clientVars.chatHistory.length);
+    }
+  }
+
+  return self;
+}());