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(x) {
				this._model = x;
			}
			,get() {
				return this._model;
			}
		},
		/**
		 * The row where the form positioned, has -1 if the row is unselected.
		 */
		row: {
			type: Number
			,set(x) {
				this._row = x;
			}
			,get() {
				return this._row;
			}
		},
		/**
		 * The number of rows in the form.
		 */
		numRows: {
			type: Number
			,get() {
				if (this._model)
					return this._model.numRows;

				return 0;
			}
		},
		/**
		 * Checks if the form data is ready.
		 */
		ready: {
			type: Boolean
			,get() {
				if (this._model)
					return this._model.ready;
					
				return false;
			}
		},
		/**
		 * The row object.
		 */
		$: {
			type: Object
			,get() {
				return this._model.getObject(this._row);
			}
		}
	}
});