<?php
require_once("observable.php");
require_once("abstract_widget.php");

$dat = new DataSource();
$widgetA = new BasicWidget();
$widgetB = new FancyWidget();

$dat->addObserver($widgetA);
$dat->addObserver($widgetB);

$dat->addRecord("drum", "$12.95", 1955);
$dat->addRecord("guitar", "$13.95", 2003);
$dat->addRecord("banjo", "$100.95", 1945);
$dat->addRecord("piano", "$120.95", 1999);

$widgetA->draw();
$widgetB->draw();
?>