var Iterator = require ('./iterator');
var Model = require ('./model');

/**
 * A light iterator for models.
 **/
module.exports = new Class
({
	Extends: Vn.Object
	,Implements: Iterator
	,Properties:
	{
		/**
		 * The model associated to this form.
		 **/
		model:
		{
			type: Model
			,set: function (x)
			{
				this._model = x;
			}
			,get: function ()
			{
				return this._model;
			}
		},
		/**
		 * The row where the form positioned, has -1 if the row is unselected.
		 **/
		row:
		{
			type: Number
			,set: function (x)
			{
				this._row = x;
			}
			,get: function ()
			{
				return this._row;
			}
		},
		/**
		 * The number of rows in the form.
		 **/
		numRows:
		{
			type: Number
			,get: function ()
			{
				if (this._model)
					return this._model.numRows;

				return 0;
			}
		},
		/**
		 * Checks if the form data is ready.
		 **/
		ready:
		{
			type: Boolean
			,get: function ()
			{
				if (this._model)
					return this._model.ready;
					
				return false;
			}
		}
	}
});