Coffee: SELECT id, name FROM items WHERE id IN (SELECT item FROM current_items) ORDER BY name Expected % weight loss: Tolerance Specification Notes:

<layout type="horizontal">
                <stretch />
                <button id="save" type="push" name="Save" />
            </layout>
        </layout>
        <svgwidget id="boxplot" />
    </layout>
    <program>
        <![CDATA[
            var window = this;
            this.windowTitle = TTR("roastspec", "Typica - Edit Roasting Specification");
            var selector = findChildObject(this, 'currentitems');
            var expected = findChildObject(this, 'expectedloss');
            var tolerance = findChildObject(this, 'tolerance');
            var notes = findChildObject(this, 'notes');
            var savebutton = findChildObject(this, 'save');
            var boxplot = findChildObject(this, 'boxplot');
            var updateDisplay = function() {
                var query = new QSqlQuery();
                query.prepare("SELECT loss, tolerance, notes FROM roasting_specification WHERE item = :id1 AND time = (SELECT max(time) FROM roasting_specification WHERE item = :id2)");
                query.bind(":id1", selector.currentData());
                query.bind(":id2", selector.currentData());
                query.exec();
                if(query.next()) {
                    if(query.value(0).length > 0) {
                        expected.text = Number(query.value(0)) * 100;
                    } else {
                        expected.text = "";
                    }
                    if(query.value(1).length > 0) {
                        tolerance.text = Number(query.value(1)) * 100;
                    } else {
                        tolerance.text = "";
                    }
                    notes.plainText = query.value(2);
                } else {
                    expected.text = "";
                    tolerance.text = "";
                    notes.plainText = "";
                }
                query.prepare("SELECT (unroasted_total_quantity - roasted_quantity)/unroasted_total_quantity AS loss FROM roasting_log WHERE roasted_id = :id1 AND unroasted_id = (SELECT unroasted_id FROM roasting_log WHERE time = (SELECT max(time) FROM roasting_log WHERE roasted_id = :id2) AND roasted_id = :id3) AND approval = true ORDER BY loss ASC");
                query.bind(":id1", selector.currentData());
                query.bind(":id2", selector.currentData());
                query.bind(":id3", selector.currentData());
                query.exec();
                var buffer = new QBuffer;
                buffer.open(3);
                var output = new XmlWriter(buffer);
                output.writeStartDocument("1.0");
                output.writeDTD('<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">');
                output.writeStartElement("svg");
                output.writeAttribute("width", "40");
                output.writeAttribute("height", "320");
                output.writeStartElement("g");
                output.writeAttribute("stroke", "black");
                output.writeAttribute("stroke-width", "2");
                output.writeStartElement("line");
                output.writeAttribute("x1", "15");
                output.writeAttribute("x2", "25");
                output.writeAttribute("y1", "278.25");
                output.writeAttribute("y2", "278.26");
                output.writeTextElement("title", "17.71");
                output.writeEndElement();
                output.writeStartElement("line");
                output.writeAttribute("x1", "20");
                output.writeAttribute("x2", "20");
                output.writeAttribute("y1", "278.25");
                output.writeAttribute("y2", "247.5");
                output.writeEndElement();
                output.writeStartElement("line");
                output.writeAttribute("x1", "10");
                output.writeAttribute("x2", "30");
                output.writeAttribute("y1", "247.5");
                output.writeAttribute("y2", "247.5");
                output.writeEndElement();
                
                output.writeEndElement();
                output.writeEndElement();
                output.writeEndDocument();
                boxplot.loadDevice(buffer);
                buffer.close();
                query = query.invalidate();
            };
            updateDisplay();
            selector['currentIndexChanged(int)'].connect(function() {
                updateDisplay();
            });
            savebutton.clicked.connect(function() {
                var query = new QSqlQuery();
                var columnspec = "time, item, ";
                var valuespec = "'now', :id, ";
                if(expected.text.length > 0) {
                    columnspec += "loss, ";
                    valuespec += ":loss, ";
                }
                if(tolerance.text.length > 0) {
                    columnspec += "tolerance, ";
                    valuespec += ":tolerance, ";
                }
                columnspec += "notes";
                valuespec += ":notes";
                query.prepare("INSERT INTO roasting_specification (" + columnspec + ") VALUES (" + valuespec + ")");
                query.bind(":id", selector.currentData());
                if(expected.text.length > 0) {
                    query.bind(":loss", Number(expected.text) / 100);
                }
                if(tolerance.text.length > 0) {
                    query.bind(":tolerance", Number(tolerance.text) / 100);
                }
                query.bind(":notes", notes.plainText);
                query.exec();
                window.close();
            });
        ]]>
    </program>
</window>