Interpolate v2

forms/admin/connections/connections.js

@@ -26,14 +26,6 @@ Hedera.Connections = new Class
 		this.$.sessions.refresh ();	
 	}
 
-	,repeaterFunc: function (res, form)
-	{
-		res.$.link.href = this.hash.make ({
-			form: 'admin/access-log',
-			user: form.$.userId
-		});
-	}
-
 	,onChangeUserClick: function (button, form)
 	{
 		this.gui.supplantUser (form.get ('user'),

forms/admin/connections/ui.xml

@@ -19,7 +19,7 @@
 </div>
 <div id="main" class="connections">
 	<div class="card list">
-		<htk-repeater form-id="iter" renderer="repeaterFunc">
+		<htk-repeater>
 			<db-model property="model" id="sessions" on-status-changed="onModelStatusChange">
 				SELECT vu.user userId, vu.stamp, c.Cliente, s.lastUpdate, 
 						a.platform, a.browser, a.version, u.name user
@@ -33,7 +33,9 @@
 					ORDER BY lastUpdate DESC
 			</db-model>
 			<custom>
-				<a id="link" class="list-row" title="_Access log">
+				<a href="#!form=admin/access-log&amp;user={{userId}}"
+					class="list-row"
+					title="_Access log">
 					<div class="actions">
 						<htk-button
 							lot="iter"
@@ -43,16 +45,14 @@
 							on-click="onChangeUserClick"/>
 					</div>
 					<p class="important">
-						<htk-text lot="iter" name="Cliente"/>
+						{{Cliente}}
 					</p>
 					<p>
 						<htk-text lot="iter" name="stamp" format="%a, %T"/> - 
 						<htk-text lot="iter" name="lastUpdate" format="%T"/>
 					</p>
 					<p>
-						<htk-text lot="iter" name="platform"/> - 
+						{{platform}} - {{browser}} {{version}}
-						<htk-text lot="iter" name="browser"/> 
-						<htk-text lot="iter" name="version"/>
 					</p>
 				</a>
 			</custom>

forms/admin/links/ui.xml

@@ -12,8 +12,7 @@
 			<custom>
 				<a class="list-row" href="{{link}}" target="_blank">
 					<htk-image
-						lot="iter"
+						value="{{image}}"
-						name="image"
 						directory="link"
 						subdir="full"/>
 					<p class="important">

forms/admin/users/ui.xml

@@ -24,8 +24,7 @@
 					title="_AccessLog">
 					<div class="actions">
 						<htk-button
-							lot="iter"
+							value="{{id}}"
-							name="id"
 							tip="_AccessAsUser"
 							icon="incognito"
 							on-click="onChangeUserClick"/>

forms/admin/visits/ui.xml

@@ -42,7 +42,7 @@
 		</p>
 	</div>
 	<div class="card list ">
-		<htk-repeater form-id="iter" empty-message="_Select date interval">
+		<htk-repeater empty-message="_Select date interval">
 			<db-model property="model" id="visits" lot="hash">
 				SELECT browser
 						,MIN(CAST(version AS DECIMAL(4,1))) minVersion
@@ -61,9 +61,7 @@
 			<custom>
 				<div class="list-row">
 					<p class="important">
-						<htk-text lot="iter" name="browser"/> 
+						{{browser}} {{minVersion}} - {{maxVersion}}
-						<htk-text lot="iter" name="minVersion"/> - 
-						<htk-text lot="iter" name="maxVersion"/>
 					</p>
 					<p>
 						<htk-text lot="iter" name="visits"/> 

forms/agencies/packages/packages.js

@@ -6,8 +6,8 @@ Hedera.Packages = new Class
 	,onShowClick: function  (column, agencyId)
 	{
 		this.hash.setAll ({
-			'form': 'agencies/provinces',
+			form: 'agencies/provinces',
-			'agency': agencyId
+			agency: agencyId
 		});
 	}
 });

forms/cms/home/ui.xml

@@ -23,14 +23,13 @@
 					<div class="top">
 						<h2>{{title}}</h2>
 						<div class="new-text">
-							<htk-html lot="iter" name="text"/>
+							<htk-html value="{{text}}"/>
 						</div>
 					</div>
 					<htk-image
 						directory="news"
 						subdir="full"
-						lot="iter"
+						value="{{image}}"
-						name="image"
 						editable="false"
 						full-dir="full"/>
 				</div>

forms/ecomerce/basket/ui.xml

@@ -26,7 +26,7 @@
 				</htk-text>
 			</p>
 		</div>
-		<htk-repeater form-id="iter" renderer="repeaterFunc">
+		<htk-repeater renderer="repeaterFunc">
 			<db-model id="items" property="model" updatable="true">
 				SELECT i.id, i.amount, i.price, a.Article, a.Categoria, 
 					a.Medida, a.Tallos, a.Color, o.Abreviatura, a.Foto
@@ -37,26 +37,22 @@
 			<custom>
 				<div class="line">
 					<htk-button
-						lot="iter"
+						value="{{ticket_id}}"
-						name="ticket_id"
 						class="delete"
 						tip="_Remove"
 						icon="delete"
 						on-click="onDeleteClick"/>
 					<htk-image
-						lot="iter"
+						value="{{Foto}}"
-						name="Foto"
 						class="photo"
 						directory="catalog"
 						subdir="200x200"
 						full-dir="900x900"/>
 					<p class="concept">
-						<htk-text lot="iter" name="Article"/> 
+						{{Article}} {{Medida}} {{Categoria}}
-						<htk-text lot="iter" name="Medida"/> 
-						<htk-text lot="iter" name="Categoria"/>
 					</p>
 					<p class="amount">
-						<htk-text lot="iter" name="amount"/> x
+						{{amount}} x
 						<htk-text lot="iter" name="price" format="%.2d€"/>
 						<span class="subtotal">
 							<htk-text id="subtotal" format="%.2d€"/>

forms/ecomerce/orders/orders.js

@@ -33,14 +33,6 @@ Hedera.Orders = new Class
 		this.hash.setAll ({form: 'ecomerce/basket'});
 	}
 
-	,repeaterFunc: function (res, form)
-	{
-		res.$.link.href = this.hash.make ({
-			form: 'ecomerce/ticket',
-			ticket: form.get ('ticket_id')
-		});
-	}
-
 	// TPV
 	
 	,balanceConditionalFunc: function (field, value)

forms/ecomerce/orders/ui.xml

@@ -48,12 +48,14 @@
 		</div>
 	</div>
 	<div class="card list">
-		<htk-repeater form-id="iter" renderer="repeaterFunc">
+		<htk-repeater form-id="iter">
 			<db-model property="model" lot="params">
 				CALL clientTicketList (#from, NULL)
 			</db-model>
 			<custom>
-				<a id="link" class="list-row" title="_SeeOrder">
+				<a href="#!form=ecomerce/ticket&amp;ticket={{ticket_id}}"
+					class="list-row"
+					title="_SeeOrder">
 					<p class="important total">
 						<htk-text lot="iter" name="total" format="%.2d€"/>
 					</p>

forms/ecomerce/ticket/ticket.js

@@ -31,11 +31,10 @@ Hedera.Ticket = new Class
 
 	,subtotal: function (form)
 	{
-		var price = form.get ('price');
+		var row = form.$;
-		var discount = form.get ('discount');
 	
-		if (price && form.get ('fixed'))
+		if (row.price && row.fixed)
-			return form.get ('amount') * price * ((100 - discount) / 100);
+			return row.amount * row.price * ((100 - row.discount) / 100);
 		else
 			return null;
 	}

forms/ecomerce/ticket/ui.xml

@@ -2,11 +2,9 @@
 <vn-lot-query id="params">
 	<vn-spec name="ticket" type="Number"/>
 </vn-lot-query>
-<db-form id="ticket">
+<db-lot id="ticket" lot="params">
-	<db-model property="model" lot="params">
 	CALL clientTicketGet(#ticket)
-	</db-model>
+</db-lot>
-</db-form>
 <h1 id="title">
 	_OrderDetail
 </h1>
@@ -21,7 +19,7 @@
 		<div class="head">
 			<div>
 				<p class="important ticket-id">
-					@<htk-text name="id" lot="ticket"/>
+					@{{ticket.id}}
 				</p>
 				<p>
 					<htk-text lot="ticket" name="delivery" format="%D"/>
@@ -29,18 +27,16 @@
 			</div>
 			<div>
 				<p>
-					_Delivery <htk-text lot="ticket" name="Agencia"/>
+					<t>Delivery</t> {{ticket.Agencia}}
 				</p>
 				<p>
-					<htk-text lot="ticket" name="consignee"/>
+					{{ticket.consignee}}
 				</p>
 				<p>
-					<htk-text lot="ticket" name="name"/>
+					{{ticket.name}}
 				</p>
 				<p>
-					<htk-text lot="ticket" name="zip_code"/> 
+					{{ticket.consignee}} {{ticket.city}} ({{ticket.province}})
-					<htk-text lot="ticket" name="city"/> 
-					(<htk-text lot="ticket" name="province"/>)
 				</p>
 			</div>
 			<div>
@@ -54,15 +50,14 @@
 				</p>
 			</div>
 		</div>
-		<htk-repeater form-id="iter" renderer="repeaterFunc">
+		<htk-repeater renderer="repeaterFunc">
 			<db-model property="model" id="movements" lot="params">
 				CALL clientTicketRowGet(#ticket)
 			</db-model>
 			<custom>
 				<div class="line">
 					<htk-image
-						lot="iter"
+						value="{{Foto}}"
-						name="Foto"
 						class="photo"
 						directory="catalog"
 						subdir="200x200"

js/db/db.js

@@ -6,6 +6,7 @@ Db = module.exports = {
 	,Result         : require ('./result')
 	,ResultSet      : require ('./result-set')
 	,Model          : require ('./model')
+	,Lot            : require ('./lot')
 	,Query          : require ('./query')
 	,Calc           : require ('./calc')
 	,CalcSum        : require ('./calc-sum')

js/db/lot.js

@@ -0,0 +1,84 @@
+
+var Connection = require ('./connection');
+var Model = require ('./model');
+
+module.exports = new Class
+({
+	Extends: Vn.Form
+	,Tag: 'db-lot'
+	,Properties:
+	{
+		/**
+		 * The connection used to execute the statement.
+		 */
+		conn:
+		{
+			type: Connection
+			,set: function (x)
+			{
+				this.model.conn = x;
+			}
+			,get: function ()
+			{
+				return this.model.conn;
+			}
+		},
+		/**
+		 * The model query.
+		 */
+		query:
+		{
+			type: String
+			,set: function (x)
+			{
+				this.model.query = x;
+			}
+			,get: function ()
+			{
+				return this.model.query;
+			}
+		},
+		/**
+		 * The model select statement.
+		 */
+		stmt:
+		{
+			type: Sql.Stmt
+			,set: function (x)
+			{
+				this.model.stmt = x;
+			}
+			,get: function ()
+			{
+				return this.model.stmt;
+			}
+		},
+		/**
+		 * The lot used to execute the statement.
+		 */
+		lot:
+		{
+			type: Vn.Lot
+			,set: function (x)
+			{
+				this.model.lot = x;
+			}
+			,get: function ()
+			{
+				return this.model.lot;
+			}
+		}
+	}
+
+	,initialize: function (props)
+	{
+		this.model = new Model ();
+		this.parent (props);
+	}
+
+	,appendChild: function (child)
+	{
+		if (child.nodeType === Node.TEXT_NODE)
+			this.query = child.textContent;
+	}
+});

js/db/query.js

@@ -90,7 +90,7 @@ module.exports = new Class
 	,execute: function ()
 	{
 		this._conn.execStmt (this._stmt,
-			this.onQueryDone.bind (this), this._batch);
+			this.onQueryDone.bind (this), this._lot ? this._lot.$ : null);
 	}
 	
 	,onQueryDone: function (resultSet)
@@ -100,7 +100,7 @@ module.exports = new Class
 	
 	,onChange: function ()
 	{
-		if (this.autoLoad && this._conn && this._stmt && this._batch)
+		if (this.autoLoad && this._conn && this._stmt && this._lot)
 			this.execute ();
 	}
 });

js/hedera/app.js

@@ -118,8 +118,12 @@ module.exports = new Class
 			case 'OutdatedVersion':
 				this._newVersion ();
 				break;
-			default:
+			case 'User':
 				Htk.Toast.showError (error.message);
+				break;
+			default:
+				Htk.Toast.showError (_('Something went wrong'));
+				console.error (error.message);
 		}
 		else
 		{
@@ -160,10 +164,10 @@ module.exports = new Class
 		Htk.Toast.showError (_('Something went wrong'));
 
 		var params = {
-			 'file': error.fileName
+			 file: error.fileName
-			,'line': error.lineNumber
+			,line: error.lineNumber
-			,'message': error.message
+			,message: error.message
-			,'stack': error.stack
+			,stack: error.stack
 		};
 		this._conn.send ('core/log', params);
 	}

js/hedera/form.js

@@ -37,11 +37,14 @@ module.exports = new Class
 		var builder = new Vn.Builder ();
 		builder.compileFile ('forms/'+ this.formInfo.path +'/ui.xml');
 		
+		var conn = this.conn;
+		var hash = this.hash;
+
 		var extraObjects = {
-			conn: this.conn,
+			conn: conn,
-			hash: this.hash
+			hash: hash
 		};
-		var scope = builder.load (this.doc, this, null, extraObjects, this.hash);
+		var scope = builder.load (this.doc, this, null, extraObjects, hash);
 		this.scope = scope;
 		this.$ = scope.$;
 		this._node = this.$.main;
@@ -50,21 +53,22 @@ module.exports = new Class
 
 		if (paramsLot)
 		{
-			paramsLot.source = this.hash;
+			paramsLot.source = hash;
 			this.params = paramsLot;
 		}
 	
 		scope.link ();
 
-		var models = scope.getByTagName ('db-model');
+		function setConnection (tagName)
+		{
+			var objects = scope.getByTagName (tagName);
+			for (var i = 0; i < objects.length; i++)
+				objects[i].conn = conn;
+		}
 
-		for (var i = 0; i < models.length; i++)
+		var tags = ['db-model', 'db-query', 'db-lot'];
-			models[i].conn = this.conn;
+		for (var i = 0; i < tags.length; i++)
-
+			setConnection (tags[i]);
-		var queries = scope.getByTagName ('db-query');
-
-		for (var i = 0; i < queries.length; i++)
-			queries[i].conn = this.conn;
 
 		if (this.node)
 		{

js/hedera/gui.js

@@ -57,27 +57,12 @@ module.exports = new Class
 		this.loadTemplateFromString (Tpl);
 		this.loadingCount = 0;
 
-		this.$.background.onclick = function () {};
-
-		this.$.menuButton.addEventListener ('click', function (event)
-		{
-			event.stopPropagation ();
-			this.showMenu ();
-		}.bind (this));
-
-		this.$.leftPanel.addEventListener ('click', function (event)
-		{
-			event.stopPropagation ();
-		});
-
 		this.parent (props);
 
 		this.$.socialBar.conn = this._conn;
-
+		this.$.user.conn = this._conn;
-		var sql = 'SELECT name FROM customer_user;'
+		this.$.configQuery.conn = this._conn;
-			+'SELECT default_form, image_dir, image_host FROM config;'
+		this.$.configQuery.execute ();
-			+'SELECT production_domain, test_domain FROM config;';
-		this._conn.execQuery (sql, this.onMainQueryDone.bind (this));
 
 		this.loadMenu ();
 	}
@@ -150,13 +135,8 @@ module.exports = new Class
 			this.loaderPop ();
 	}
 
-	,onMainQueryDone: function (resultSet)
+	,onConfigQueryReady: function (query, resultSet)
 	{
-		// Retrieving the user name
-
-		var userName = resultSet.fetchValue ();
-		Vn.Node.setText (this.$.userName, userName);
-
 		// Retrieving configuration parameters
 
 		Object.assign (Vn.Config, resultSet.fetchObject ());
@@ -178,8 +158,10 @@ module.exports = new Class
 				var linkField = 'test_domain';
 			}
 			
-			Vn.Node.setText (this.$.testLink, _(linkText));
+			this.$.newVersion.assign ({
-			this.$.testLink.href = '//'+ row[linkField];
+				text: _(linkText),
+				link: '//'+ row[linkField]
+			});
 		}
 		else
 			Vn.Node.hide (this.$.testLink);
@@ -298,6 +280,17 @@ module.exports = new Class
 		}
 	}
 
+	,onMenuButtonClick: function (event)
+	{
+		event.stopPropagation ();
+		this.showMenu ();
+	}
+
+	,onLeftPanelClick: function (event)
+	{
+		event.stopPropagation ();
+	}
+
 	,showMenu: function ()
 	{
 		this.showBackground ();
@@ -335,7 +328,7 @@ module.exports = new Class
 		if (!this._shown)
 			return;
 		
-		var navbar = this.$.topBar;
+		var navbar = this.$.navbar;
 		var yOffset = window.pageYOffset;
 		var showNavbar = this._lastYOffset > yOffset || yOffset < navbar.offsetHeight;
 		
@@ -357,6 +350,8 @@ module.exports = new Class
 
 	//++++++++++++++++++++++++++++++++++++++++++++++++++++++ Background
 
+	,onBackgroundClick: function () {}
+
 	,showBackground: function ()
 	{
 		Vn.Node.addClass (this.$.background, 'show');

js/hedera/gui.xml

@@ -1,14 +1,22 @@
 <vn>
+<vn-lot id="new-version"/>
+<db-lot id="user">
+	SELECT name FROM customer_user
+</db-lot>
+<db-query id="config-query" on-ready="onConfigQueryReady">
+	SELECT default_form, image_dir, image_host FROM config;
+	SELECT production_domain, test_domain FROM config;
+</db-query>
 <div id="main" class="vn-gui">
-	<div id="top-bar" class="navbar">
+	<div id="navbar" class="navbar">
 		<div id="action-bar" class="action-bar"/>
-		<button id="menu-button" class="menu-button">
+		<button class="menu-button" on-click="onMenuButtonClick">
 			<img src="image/icon/dark/menu.svg" alt="_Menu"/>
 		</button>
 		<div id="title" class="title"/>
 		<htk-spinner id="loader" class="loader dark"/>
 	</div>
-	<div id="left-panel" class="left-panel">
+	<div id="left-panel" class="left-panel" on-click="onLeftPanelClick">
 		<div class="menu-overflow">
 			<div class="menu-header" id="menu-header">
 				<img class="logo" src="image/logo-dark.svg" alt="Verdnatura"/>
@@ -16,7 +24,7 @@
 					<button class="logout" on-click="onLogoutClick" title="_Exit">
 						<img src="image/icon/dark/exit.svg" alt="_Exit"/>
 					</button>
-					<p id="user-name"/>
+					<p>{{user.name}}</p>
 				</div>
 				<div id="supplant" class="supplant user-info">
 					<button class="logout" on-click="onSupplantExitClick" title="_Exit">
@@ -25,7 +33,9 @@
 					<p id="supplanted"/>
 				</div>
 			</div>
-			<a id="test-link" class="test-link" href="#"/>
+			<a id="test-link" class="test-link" href="{{newVersion.link}}">
+				{{newVersion.text}}
+			</a>
 			<ul id="main-menu" class="main-menu"/>
 		</div>
 		<div class="social">
@@ -35,6 +45,6 @@
 	<div class="body">
 		<div id="form-holder" class="form-holder"/>
 	</div>
-	<div id="background" class="background"/>
+	<div id="background" class="background" on-click="onBackgroundClick"/>
 </div>
 </vn>

js/htk/repeater.js

@@ -3,7 +3,6 @@ module.exports = new Class
 ({
 	Extends: Vn.Component
 	,Tag: 'htk-repeater'
-	,Child: 'model'
 	,Properties:
 	{
 		/**
@@ -119,7 +118,8 @@ module.exports = new Class
 		var extraObjects = {};
 		extraObjects[this._formId] = set;
 
-		var scope = this._builder.load (this.doc, null, this._parentScope, extraObjects, set);
+		var scope = this._builder.load (
+			this.doc, null, this._parentScope, extraObjects, set);
 		scope.link ();
 
 		this._childsData.push ({

js/vn/builder.js

@@ -6,6 +6,7 @@ var kebabToCamel = require ('./string-util').kebabToCamel;
 var CompilerObject = require ('./compiler-object');
 var CompilerElement = require ('./compiler-element');
 var CompilerText = require ('./compiler-text');
+var CompilerInterpolable = require ('./compiler-interpolable');
 
 var regCompilers = [
 	CompilerObject,
@@ -103,6 +104,7 @@ module.exports = new Class
 		this._contexts = [];
 		this._contextMap = {};
 		this._mainContext = null;
+		this._interpoler = new CompilerInterpolable (this);
 
 		var compilers = [];
 		this._compilers = compilers;
@@ -169,12 +171,12 @@ module.exports = new Class
 	 * Creates a new scope from a compiled XML tree.
 	 * 
 	 * @param {Document} dstDocument The document used to create the nodes
-	 * @param {Object} signalData The object where to bind methods
+	 * @param {Object} thisArg The object where to bind methods
 	 * @param {Scope} parentScope The parent scope or %null for no parent
 	 * @param {Lot} lot The default lot
 	 * @return {Scope} The created scope
 	 */
-	,load: function (dstDocument, signalData, parentScope, extraObjects, lot)
+	,load: function (dstDocument, thisArg, parentScope, extraObjects, lot)
 	{
 		if (this._contexts === null)
 			return null;
@@ -183,7 +185,7 @@ module.exports = new Class
 		var contexts = this._contexts;
 		var len = contexts.length;
 		var objects = new Array (len);
-		var scope = new Scope (this, objects, signalData, parentScope, lot)
+		var scope = new Scope (this, objects, thisArg, parentScope, lot)
 	
 		for (var i = 0; i < len; i++)
 		{
@@ -204,6 +206,8 @@ module.exports = new Class
 		var objects = scope.objects;
 		var compilers = this._compilers;
 
+		this._interpoler.preLink (scope);
+
 		for (var i = 0; i < compilers.length; i++)
 			compilers[i].preLink (scope);
 
@@ -219,10 +223,24 @@ module.exports = new Class
 			context.compiler.connect (context, objects[i], objects, scope);
 		}
 
+		this._interpoler.postLink (scope);
+	
 		for (var i = 0; i < compilers.length; i++)
 			compilers[i].postLink (scope);
 	}
 
+	/**
+	 * Frees all resources allocated by a scope.
+	 */
+	,freeScope: function (scope)
+	{
+		this._interpoler.free (scope);
+
+		var compilers = this._compilers;
+		for (var i = 0; i < compilers.length; i++)
+			compilers[i].free (scope);
+	}
+
 	/**
 	 * Logs an error parsing the node.
 	 * 

js/vn/compiler-element.js

@@ -28,6 +28,14 @@ module.exports = new Class
 		var childs = [];
 		var events = {};
 
+		var context = {
+			tagName: tagName,
+			props: props,
+			objectProps: objectProps,
+			childs: childs,
+			events: events
+		};
+
 		var a = node.attributes;
 
 		for (var i = 0; i < a.length; i++)
@@ -40,8 +48,13 @@ module.exports = new Class
 			else if (objectAttrs[attribute])
 				objectProps[attribute] = kebabToCamel(value);
 			else if (!specialAttrs[attribute])
+			{
+				value = this.translateValue (value);
+
+				if (!this._interpoler.compile (context, attribute, value))
 					props[attribute] = this.translateValue (value);
 			}
+		}
 
 		var childContext;
 		var childNodes = node.childNodes;
@@ -51,13 +64,7 @@ module.exports = new Class
 		if (childContext = builder._compile (childNodes[i]))
 			childs.push (childContext.id);
 
-		return {
+		return context;
-			tagName: tagName,
-			props: props,
-			objectProps: objectProps,
-			childs: childs,
-			events: events
-		};
 	}
 	
 	,instantiate: function (doc, context, scope)
@@ -66,7 +73,7 @@ module.exports = new Class
 
 		var props = context.props;
 		for (var prop in props)
-			object.setAttribute (prop, scope.interpolate (props[prop]));
+			object.setAttribute (prop, props[prop]);
 
 		if (context.nodeId)
 			object.setAttribute ('id', scope.getHtmlId (context.nodeId));
@@ -74,6 +81,11 @@ module.exports = new Class
 		return object;
 	}
 
+	,setProperty: function (object, data, value)
+	{
+		object.setAttribute (data, value);
+	}
+	
 	,link: function (context, object, objects, scope)
 	{
 		var props = context.objectProps;

js/vn/compiler-interpolable.js

@@ -0,0 +1,144 @@
+
+var VnObject = require ('./object');
+
+var regex = /{{[\w_]+(\.[\w_]+)?}}/g;
+
+/**
+ * Replaces all ocurrences of {{value}} by it's corresponding value in the
+ * scope lot.
+ */
+module.exports = new Class
+({
+	Extends: VnObject
+
+	,_lots: {}
+	,_links: []
+
+	,initialize: function (builder)
+	{
+		this._builder = builder;
+		this.parent ();
+	}
+	
+	,compile: function (objContext, data, string)
+	{
+		var matchs = string.match (regex);
+
+		if (!matchs)
+			return null;
+
+		var lots = this._lots;
+		var links = this._links;
+
+		var regLots = {};
+		var params = [];
+
+		var context = {
+			objContext: objContext,
+			data: data,
+			string: string,
+			params: params
+		};
+
+		for (var i = 0; i < matchs.length; i++)
+		{
+			var match = matchs[i];
+			match = matchs[i].substr (2, match.length - 4);
+			match = match.split ('.');
+
+			var lotId;
+			var name;
+			
+			if (match.length > 1)
+			{
+				lotId = match[0];
+				name = match[1];
+			}
+			else
+			{
+				lotId = null;
+				name = match[0];
+			}
+
+			params.push ({
+				lotId: lotId,
+				name: name
+			});
+
+			if (regLots[lotId] === undefined)
+			{
+				if (!lots[lotId])
+					lots[lotId] = [];
+
+				lots[lotId].push (context);
+				regLots[lotId] = 1;
+			}
+		}
+
+		links.push (context);
+		return context;
+	}
+	
+	,interpolate: function (link, scope)
+	{
+		var i = 0;
+		var params = link.params;
+		var $ = scope.$;
+
+		return link.string.replace (regex, function () {
+			var param = params[i++];
+			var lotId = param.lotId;
+			var lot = lotId ? $[lotId] : scope.lot;
+			var value = lot ? lot.$[param.name] : null;
+			return value != null ? value : '';
+		});
+	}
+
+	,preLink: function (scope)
+	{
+		this._link (this._links, scope);
+	}
+
+	,_link: function (links, scope)
+	{
+		for (var i = 0; i < links.length; i++)
+		{
+			var link = links[i];
+			var string = this.interpolate (link, scope);
+			var object = scope.objects[link.objContext.id];
+			link.objContext.compiler.setProperty (object, link.data, string);
+		}
+	}
+
+	,getLot: function (lotId, scope)
+	{
+		return lotId == 'null' ? scope.lot : scope.$[lotId];
+	}
+
+	,postLink: function (scope)
+	{
+		for (var lotId in this._lots)
+		{
+			var lot = this.getLot (lotId, scope);
+
+			if (lot)
+				lot.on ('change', this.onLotChange.bind (this, lotId, scope), scope);
+		}
+	}
+
+	,free: function (scope)
+	{
+		for (var lotId in this._lots)
+		{
+			var lot = this.getLot (lotId, scope);
+
+			if (lot)
+				lot.disconnectByInstance (scope);
+		}
+	}
+
+	,onLotChange: function (lotId, scope)
+	{
+		this._link (this._lots[lotId], scope);
+	}
+});

js/vn/compiler-object.js

@@ -1,4 +1,5 @@
 
+var VnObject = require ('./object');
 var Compiler = require ('./compiler');
 var Component = require ('./component');
 var Type = require ('./type');
@@ -115,6 +116,9 @@ module.exports = new Class
 			return;
 		}
 
+		if (this._interpoler.compile (context, propName, value))
+			return;
+		
 		switch (propInfo.type)
 		{
 			case null:
@@ -173,6 +177,11 @@ module.exports = new Class
 		return object;
 	}
 	
+	,setProperty: function (object, data, value)
+	{
+		object[data] = value;
+	}
+
 	,preLink: function (scope)
 	{
 		var objects = scope.objects;
@@ -229,7 +238,23 @@ module.exports = new Class
 			var method = scope.getMethod (events[event]);
 			
 			if (method)
-				object.on (event, method, scope.signalData);
+				object.on (event, method, scope.thisArg);
+		}
+	}
+
+	,free: function (scope)
+	{
+		var objects = scope.objects;
+		
+		for (var i = objects.length; i--;)
+		{
+			var object = objects[i];
+
+			if (object instanceof VnObject)
+			{
+				object.disconnectByInstance (scope.thisArg);
+				object.unref ();
+			}
 		}
 	}
 

js/vn/compiler-text.js

@@ -28,11 +28,23 @@ module.exports = new Class
 		else
 			return null;
 
-		return {text: text};
+		var context = {text: null};
+
+		if (this._interpoler.compile (context, null, text))
+			context.text = '';
+		else
+			context.text = text;
+
+		return context;
 	}
 	
 	,instantiate: function (doc, context, scope)
 	{
-		return doc.createTextNode (scope.interpolate (context.text));
+		return doc.createTextNode (context.text);
+	}
+
+	,setProperty: function (object, data, value)
+	{
+		object.textContent = value;
 	}
 });

js/vn/compiler.js

@@ -15,10 +15,13 @@ module.exports = new Class
 	,link: function () {}
 	,connect: function () {}
 	,postLink: function () {}
+	,setProperty: function () {}
+	,free: function () {}
 
 	,initialize: function (builder)
 	{
 		this._builder = builder;
+		this._interpoler = builder._interpoler;
 		this.parent ();
 	}
 

js/vn/iterator.js

@@ -58,11 +58,12 @@ module.exports = new Class
 		}
 	}
 
+	,_model: null
+
 	,initialize: function (props)
 	{
 		Object.assign (this, {
-			 _model: null
+			 _row: -1
-			,_row: -1
 			,_rowLock: false
 		});
 		this.parent (props);

js/vn/json-connection.js

@@ -1,6 +1,6 @@
 
 var VnObject = require ('./object');
-var JsonException = require ('./json-exception');
+var JsonError = require ('./json-error');
 
 /**
  * Handler for JSON rest connections.
@@ -125,7 +125,7 @@ module.exports = new Class
 	 */
 	,supplantUser: function (user, callback)
 	{
-		var params = {'supplantUser': user};
+		var params = {supplantUser: user};
 		this.send ('core/supplant', params,
 			this._onUserSupplant.bind (this, callback));
 	}
@@ -160,7 +160,7 @@ module.exports = new Class
 		if (!params)
 			params = {};
 	
-		params['srv'] = 'json:'+ restService;
+		params.srv = 'json:'+ restService;
 		
 		this.sendWithUrl (params, callback, 'POST', '.');
 	}
@@ -213,7 +213,7 @@ module.exports = new Class
 	,sendWithUrl: function (params, callback, method, url)
 	{
 		if (this.token)
-			params['token'] = this.token;
+			params.token = this.token;
 
 		var request = new XMLHttpRequest ();
 		request.open (method, url, true);
@@ -255,7 +255,7 @@ module.exports = new Class
 				throw ex;
 			}
 		
-			var contentType = null;
+			var contentType;
 			
 			try {
 				contentType = request
@@ -263,7 +263,9 @@ module.exports = new Class
 					.split (';')[0]
 					.trim ();
 			}
-			catch (e) {}
+			catch (e) {
+				contentType = null;
+			}
 				
 			if (contentType != 'application/json')
 			{
@@ -291,7 +293,7 @@ module.exports = new Class
 						.replace (/Exception$/, '')
 						.replace (/^Vn\.Web\./, '');
 
-				var ex = new JsonException ();
+				var ex = new JsonError ();
 				Object.assign (ex, {
 					exception: exception,
 					message: jsData.message,
@@ -310,15 +312,15 @@ module.exports = new Class
 		}
 
 		if (callback)
-//		try {
+		try {
 			callback (data, error);
-/*			error = null;
+			error = null;
 		}
 		catch (e)
 		{
 			error = e;
 		}
-*/		
+		
 		if (error)
 		{
 			if (error.exception == 'SessionExpired')

js/vn/json-error.js

@@ -3,7 +3,9 @@
  */
 module.exports = new Class
 ({
-	 exception: null
+	Extends: Error
+
+	,exception: null
 	,message: null
 	,code: null
 	,file: null
@@ -12,6 +14,8 @@ module.exports = new Class
 	
 	,initialize: function (exception, message, code, file, line, trace)
 	{
+		this.name = 'JsonError'
+		this.stack = (new Error ()).stack;
 		this.exception = exception;
 		this.message = message;
 		this.code = code;

js/vn/object.js

@@ -23,7 +23,7 @@ module.exports = new Class
 	/*
 	 * Signal handlers data.
 	 */
-	,_signalData: null
+	,_thisArg: null
 
 	/**
 	 * Initializes the object and sets all properties passed to the class
@@ -100,10 +100,10 @@ module.exports = new Class
 		}
 		
 		this._signalInit ();
-		var callbacks = this._signalData.signals[id];
+		var callbacks = this._thisArg.signals[id];
 
 		if (!callbacks)
-			callbacks = this._signalData.signals[id] = [];
+			callbacks = this._thisArg.signals[id] = [];
 			
 		callbacks.push ({
 			 blocked: false
@@ -121,10 +121,10 @@ module.exports = new Class
 	 */
 	,blockSignal: function (id, callback, block, instance)
 	{
-		if (!this._signalData)
+		if (!this._thisArg)
 			return;
 
-		var callbacks = this._signalData.signals[id];
+		var callbacks = this._thisArg.signals[id];
 		
 		if (!callbacks)
 			return;
@@ -142,10 +142,10 @@ module.exports = new Class
 	 */
 	,emit: function (id)
 	{
-		if (!this._signalData)
+		if (!this._thisArg)
 			return;
 
-		var callbacks = this._signalData.signals[id];
+		var callbacks = this._thisArg.signals[id];
 		
 		if (!callbacks)
 			return;
@@ -170,10 +170,10 @@ module.exports = new Class
 	 */
 	,disconnect: function (id, callback, instance)
 	{
-		if (!this._signalData)
+		if (!this._thisArg)
 			return;
 
-		var callbacks = this._signalData.signals[id];
+		var callbacks = this._thisArg.signals[id];
 		
 		if (callbacks)
 		for (var i = callbacks.length; i--;)
@@ -189,10 +189,10 @@ module.exports = new Class
 	 */
 	,disconnectByInstance: function (instance)
 	{
-		if (!this._signalData)
+		if (!this._thisArg)
 			return;
 	
-		var signals = this._signalData.signals;
+		var signals = this._thisArg.signals;
 
 		for (var signalId in signals)
 		{
@@ -212,15 +212,15 @@ module.exports = new Class
 	 */
 	,_destroy: function ()
 	{
-		if (!this._signalData)
+		if (!this._thisArg)
 			return;
 	
-		var links = this._signalData.links;
+		var links = this._thisArg.links;
 	
 		for (var key in links)
 			this._unlink (links[key]);
 		
-		this._signalData = null;
+		this._thisArg = null;
 	}
 	
 	/**
@@ -232,7 +232,7 @@ module.exports = new Class
 	,link: function (prop, handlers)
 	{
 		this._signalInit ();
-		var links = this._signalData.links;
+		var links = this._thisArg.links;
 	
 		for (var key in prop)
 		{
@@ -264,8 +264,8 @@ module.exports = new Class
 	
 	,_signalInit: function ()
 	{
-		if (!this._signalData)
+		if (!this._thisArg)
-			this._signalData = {
+			this._thisArg = {
 				signals: {},
 				links: {}
 			};

js/vn/scope.js

@@ -7,17 +7,17 @@ module.exports = new Class
 ({
 	Extends: VnObject
 
-	,initialize: function (builder, objects, signalData, parentScope, lot)
+	,initialize: function (builder, objects, thisArg, parentScope, lot)
 	{
 		this.builder = builder;
 		this.objects = objects;
-		this.signalData = signalData;
+		this.thisArg = thisArg;
 		this.parentScope = parentScope;
 		this.uid = ++scopeUid;
 		this.lot = lot;
 
-		if (!signalData && parentScope)
+		if (!thisArg && parentScope)
-			this.signalData = parentScope.signalData;
+			this.thisArg = parentScope.thisArg;
 
 		this.parent ();
 	}
@@ -58,42 +58,14 @@ module.exports = new Class
 		this.builder.link (this);
 	}
 
-	/**
-	 * Replaces all ocurrences of {{value}} by it's corresponding value in the
-	 * scope lot.
-	 */
-	,interpolate: function (string)
-	{
-		var self = this;
-
-		function replaceFunc (token)
-		{
-			var key = token.substr (2, token.length - 4);
-			var value = self.getLotValue (key);
-			return value ? value : '';
-		}
-
-		return string.replace (/{{[\w_]+}}/g, replaceFunc);
-	}
-
-	,getLotValue: function (key)
-	{
-		var value = this.lot.$[key];
-
-		if (value === undefined && this.parentScope)
-			return this.parentScope.getLotValue (key);
-
-		return value;
-	}
-
 	,getMethod: function (value, binded)
 	{	
-		if (this.signalData)
+		if (this.thisArg)
 		{
-			var method = this.signalData[value];
+			var method = this.thisArg[value];
 
 			if (method && binded)
-				method = method.bind (this.signalData);
+				method = method.bind (this.thisArg);
 		}
 		else
 			var method = window[value];
@@ -111,19 +83,7 @@ module.exports = new Class
 	
 	,_destroy: function ()
 	{
-		var objects = this.objects;
+		this.builder.freeScope (this);
-	
-		for (var i = objects.length; i--;)
-		{
-			var object = objects[i];
-
-			if (object instanceof VnObject)
-			{
-				object.unref ();
-				object.disconnectByInstance (this.builder.signalData);
-			}
-		}
-
 		this.parent ();
 	}
 });

js/vn/vn.js

@@ -31,7 +31,7 @@ Vn = module.exports = {
 	,NodeBuilder    : require ('./node-builder')
 	,Builder        : require ('./builder')
 	,Component      : require ('./component')
-	,JsonException  : require ('./json-exception')
+	,JsonException  : require ('./json-error')
 	,JsonConnection : require ('./json-connection')
 
 	,Config: {}