added Pad model via Joose, PadManager is a lot cleaner now.

node/Models/Pad.js

@@ -0,0 +1,145 @@
+var Changeset = require("../Changeset");
+var AttributePoolFactory = require("../AttributePoolFactory");
+
+exports.startText = "Welcome to Etherpad Lite.  This pad text is synchronized as you type, so that everyone viewing this page sees the same text.";
+
+/**
+ * Copied from the Etherpad source code, don't know what its good for
+ * @param txt
+ */
+exports.cleanText = function (txt) {
+  return txt.replace(/\r\n/g,'\n').replace(/\r/g,'\n').replace(/\t/g, '        ').replace(/\xa0/g, ' ');
+}
+
+Class('Pad', {
+
+	// these are the properties
+	has : {
+		
+		atext : { 
+			is : 'rw', // readwrite
+			init : function() { return Changeset.makeAText("\n"); } // first value
+		}, // atext
+		
+		pool : { 
+			is: 'rw', 
+			init : function() { return AttributePoolFactory.createAttributePool(); },
+			getterName : 'apool' // legacy
+		}, // pool
+		
+		rev : { 
+			is : 'rw', 
+			init : [] 
+		}, // rev
+		
+		head : { 
+			is : 'rw', 
+			init : -1, 
+			getterName : 'getHeadRevisionNumber' 
+		}, // head
+		
+		authors : { 
+			is : 'rw', 
+			init : []
+		},
+		
+		id : { is : 'rw' }
+	},
+
+	methods : {
+	
+		BUILD : function (id) 
+		{
+        return {
+            'id' : id,
+        }
+    },
+		
+		appendRevision : function(aChangeset, author) 
+		{
+		
+			if(!author)
+				author = '';
+
+		  var newAText = Changeset.applyToAText(aChangeset, this.atext, this.pool);
+		  Changeset.copyAText(newAText, this.atext);
+		  
+		  var newRev = ++this.head;
+		  this.rev[newRev] = {};
+		  this.rev[newRev].changeset = aChangeset;
+		  this.rev[newRev].meta = {};
+		  this.rev[newRev].meta.author = author;
+		  this.rev[newRev].meta.timestamp = new Date().getTime();
+		  
+		  //ex. getNumForAuthor
+		  if(author != '')
+		    this.pool.putAttrib(['author', author || '']);
+		  
+		  if(newRev % 100 == 0)
+		  {
+		    this.rev[newRev].meta.atext = this.atext;
+		  }
+		  
+		}, //appendRevision
+		
+		getRevisionChangeset : function(revNum) 
+		{
+			
+			if(revNum < this.rev.length) 
+			{
+				return this.rev[revNum].changeset;
+			} else {
+				throw 'this revision does not exist! : ' + revNum;
+				return null;
+			}
+			
+		}, // getRevisionChangeset
+		
+		getRevisionAuthor : function(revNum) 
+		{
+			if(revNum < this.rev.length) 
+			{
+			  return this.rev[revNum].meta.author;
+			} else {
+				throw 'this revision author does not exist! : ' + revNum;
+				return null;
+			}
+			
+		}, // getRevisionAuthor
+		
+		getAllAuthors : function() 
+		{
+		  var authors = [];
+  
+		  for(key in this.pool.numToAttrib)
+		  {
+		    if(this.pool.numToAttrib[key][0] == "author" && this.pool.numToAttrib[key][1] != "")
+		    {
+		      authors.push(this.pool.numToAttrib[key][1]);
+		    }
+		  }
+		  
+		  return authors;
+		},
+		
+		text : function()
+		{
+			return this.atext.text;
+		}
+		
+	}, // methods
+	
+	
+	after : {
+	
+		initialize : function (props) 
+		{			
+    	this.id = props.id;
+    	
+    	var firstChangeset = Changeset.makeSplice("\n", 0, 0, exports.cleanText(exports.startText));                      
+    	
+  		this.appendRevision(firstChangeset, '');
+    } 
+	
+	}
+});