Typica/config/Windows/greeninventory.xml

<window id="inventory">
    <layout type="vertical">
        <layout type="horizontal">
            <sqldrop data="0" display="1" showdata="true" id="item">
                <query><![CDATA[SELECT id, name FROM coffees WHERE quantity <> 0 ORDER BY name ASC]]></query>
            </sqldrop>
            <line id="quantity" />
            <sqldrop id="units" />
            <button type="push" name="Update" id="update" />
        </layout>
        <textarea id="current" />
    </layout>
    <program>
        <![CDATA[
			var units = findChildObject(this, 'units');
			units.addItem("bag");
			units.addItem("lb");
			var items = findChildObject(this, 'item');
			var status = findChildObject(this, 'current');
			var q = "SELECT quantity FROM items WHERE id = ";
			q = q + items.currentData();
			query = new QSqlQuery();
			query.exec(q);
			query.next();
			var text = items.currentText;
			text = text + " Current inventory: ";
			text = text + query.value(0);
			text = text + " pounds (";
			q = "SELECT ";
			q = q + query.value(0);
			q = q + " / (SELECT conversion FROM lb_bag_conversion WHERE item = ";
			q = q + items.currentData();
			q = q + ")";
			query.exec(q);
			query.next();
			text = text + query.value(0);
			text = text + " bags)";
            query = query.invalidate();
			status.plainText = text;
			var button = findChildObject(this, 'update');
			var value = findChildObject(this, 'quantity');
			button.clicked.connect(function() {
				q = "INSERT INTO inventory VALUES ('now', ";
				q = q + items.currentData();
				q = q + ", ";
				if(units.currentText == "lb") {
					q = q + value.text;
				} else {
					q = q + value.text;
					q = q + " * (SELECT conversion FROM lb_bag_conversion WHERE item = ";
					q = q + items.currentData();
					q = q + ")";
				}
				q = q + ")";
                query = new QSqlQuery();
				query.exec(q);
				text = items.currentText;
				q = "SELECT quantity FROM items WHERE id = ";
				q = q + items.currentData();
				query.exec(q);
				query.next();
				text = text + " Current inventory: ";
				text = text + query.value(0);
				text = text + " pounds (";
				q = "SELECT ";
				q = q + query.value(0);
				q = q + " / (SELECT conversion FROM lb_bag_conversion WHERE item = ";
				q = q + items.currentData();
				q = q + ")";
				query.exec(q);
				query.next();
				text = text + query.value(0);
				text = text + " bags)";
				status.plainText = text;
                query = query.invalidate();
			});
			items['currentIndexChanged(int)'].connect(function() {
				q = "SELECT quantity FROM items WHERE id = ";
				q = q + items.currentData();
                query = new QSqlQuery();
				query.exec(q);
				query.next();
				var text = items.currentText;
				text = text + " Current inventory: ";
				text = text + query.value(0);
				text = text + " pounds (";
				q = "SELECT ";
				q = q + query.value(0);
				q = q + " / (SELECT conversion FROM lb_bag_conversion WHERE item = ";
				q = q + items.currentData();
				q = q + ")";
				query.exec(q);
				query.next();
				text = text + query.value(0);
				text = text + " bags)";
				status.plainText = text;
                query = query.invalidate();
			});
        ]]>
    </program>
</window>