Typica/config/Windows/editinvoiceitem.xml

<window id="invoiceitemdetail">
    <layout type="vertical">
        <layout type="grid">
            <row>
                <column><label>Name</label></column>
                <column><line id="name" /></column>
            </row>
            <row>
                <column><label>Reference</label></column>
                <column><line id="reference" /></column>
            </row>
            <row>
                <column><label>Unit Cost</label></column>
                <column><line validator="numeric" id="cost" /></column>
            </row>
            <row>
                <column><label>Quantity</label></column>
                <column><line validator="numeric" id="quantity" /></column>
            </row>
            <row>
                <column><label>Bags</label></column>
                <column><line validator="numeric" id="bags" /></column>
            </row>
        </layout>
        <button name="Submit" type="push" id="submit" />
    </layout>
    <program>
        <![CDATA[
            window = this;
            this.windowTitle = 'Typica - Item Detail';
            var nameField = findChildObject(this, 'name');
            var referenceField = findChildObject(this, 'reference');
            var costField = findChildObject(this, 'cost');
            var quantityField = findChildObject(this, 'quantity');
            var bagsField = findChildObject(this, 'bags');
            this.dataSet = function() {
                nameField.text = window.rowData[2];
                referenceField.text = window.rowData[3];
                costField.text = window.rowData[4];
                quantityField.text = window.rowData[5];
                bagsField.text = window.rowData[6];
            };
            button = findChildObject(this, 'submit');
            button.clicked.connect(function() {
                var query = new QSqlQuery();
                if(nameField.text != window.rowData[2]) {
                    query.prepare("UPDATE items SET name = :name WHERE id = :id");
                    query.bind(":name", nameField.text);
                    query.bind(":id", Number(window.rowData[1]));
                    query.exec();
                    query.prepare("UPDATE invoice_items SET description = :name WHERE item_id = :id");
                    query.bind(":name", nameField.text);
                    query.bind(":id", Number(window.rowData[1]));
                    query.exec();
                    window.rowData[2] = nameField.text;
                }
                if(referenceField.text != window.rowData[3]) {
                    query.prepare("UPDATE items SET reference = :ref WHERE id = :id");
                    query.bind(":ref", referenceField.text);
                    query.bind(":id", Number(window.rowData[1]));
                    query.exec();
                    window.rowData[3] = referenceField.text;
                }
                var cqupdated = false;
                var qbupdated = false;
                if(costField.text != window.rowData[4]) {
                    cqupdated = true;
                    query.prepare("UPDATE purchase SET cost = :cost WHERE item = :id");
                    query.bind(":cost", Number(costField.text));
                    query.bind(":id", Number(window.rowData[1]));
                    query.exec();
                    window.rowData[4] = costField.text;
                }
                if(quantityField.text != window.rowData[5]) {
                    cqupdated = true;
                    qbupdated = true;
                    query.prepare("UPDATE purchase SET quantity = :qty WHERE item = :id");
                    query.bind(":qty", Number(quantityField.text));
                    query.bind(":id", Number(window.rowData[1]));
                    query.exec();
                    window.rowData[5] = quantityField.text;
                    query.prepare("UPDATE items SET quantity = (SELECT balance FROM item_history(:id) WHERE time = (SELECT max(time) FROM item_history(:id2))) WHERE id = :id3");
                    query.bind(":id", Number(window.rowData[1]));
                    query.bind(":id2", Number(window.rowData[1]));
                    query.bind(":id3", Number(window.rowData[1]));
                    query.exec();
                }
                if(bagsField.text != window.rowData[6]) {
                    qbupdated = true;
                    window.rowData[6] = bagsField.text;
                }
                if(cqupdated) {
                    query.prepare("UPDATE invoice_items SET cost = :total WHERE item_id = :id");
                    query.bind(":total", Number(window.rowData[5]) * Number(window.rowData[4]));
                    query.bind(":id", Number(window.rowData[1]));
                    query.exec();
                }
                if(qbupdated) {
                    query.exec("SELECT 1 FROM lb_bag_conversion WHERE item = :id");
                    if(query.next()) {
                        query.prepare("UPDATE lb_bag_conversion SET conversion = :conv WHERE item = :id");
                    } else {
                        query.prepare("INSERT INTO lb_bag_conversion (item, conversion) VALUES (:id, :conv)");
                    }
                    query.bind(":conv", Number(window.rowData[5]) / Number(window.rowData[6]));
                    query.bind(":id", Number(window.rowData[1]));
                    query.exec();
                }
                query = query.invalidate();
                window.close();
            });
        ]]>
    </program>
</window>