Typica/config/Windows/purchase.xml

<window id="purchase">
    <layout type="vertical">
        <layout type="horizontal">
            <button name="Add Item" type="push" id="newForm" />
            <label>Date:</label>
            <calendar id="date"/>
            <label>Vendor:</label>
            <sqldrop data="0" display="0" showdata="false" editable="true" id="vendor">
                <query>SELECT DISTINCT vendor FROM purchase UNION SELECT '' ORDER BY vendor ASC</query>
            </sqldrop>
            <label>Invoice:</label>
            <line id="invoice" />
        </layout>
        <formarray id="form">
            <layout type="grid">
                <row>
                    <column><label>Item:</label></column>
                    <column>
                        <sqldrop data="0" display="0" showdata="false" editable="true" id="name">
                            <query>SELECT DISTINCT name FROM coffees UNION SELECT '' ORDER BY name ASC</query>
                        </sqldrop>
                    </column>
                    <column />
                    <column><label>Reference:</label></column>
                    <column>
                        <sqldrop data="0" display="0" showdata="false" editable="true" id="reference">
                            <query>SELECT DISTINCT reference FROM coffees UNION SELECT '' ORDER BY reference ASC</query>
                        </sqldrop>
                    </column>
                </row>
                <row>
                    <column><label>Quantity:</label></column>
                    <column>
                        <line validator="numeric" id="quantity" />
                    </column>
                    <column>
                        <sqldrop data="0" display="0" showdata="false" editable="false" id="units">
                            <query>SELECT * FROM (VALUES('Lb'),('Kg')) AS q (unit)</query>
                        </sqldrop>
                    </column>
                </row>
                <row>
                    <column><label>Cost:</label></column>
                    <column>
                        <line validator="numeric" id="cost" />
                    </column>
                    <column>
                        <sqldrop data="0" display="0" showdata="false" editable="false" id="costModifier">
                            <query>SELECT 'per unit' UNION SELECT 'total'</query>
                        </sqldrop>
                    </column>
                </row>
                <row>
                    <column><label>Origin:</label></column>
                    <column>
                        <sqldrop data="0" display="0" showdata="false" editable="true" id="origin">
                            <query>SELECT DISTINCT origin FROM coffees UNION SELECT '' ORDER BY origin ASC</query>
                        </sqldrop>
                    </column>
                    <column />
                    <column><label>Region:</label></column>
                    <column>
                        <sqldrop data="0" display="0" showdata="false" editable="true" id="region">
                            <query>SELECT DISTINCT region FROM coffees UNION SELECT '' ORDER BY region ASC</query>
                        </sqldrop>
                    </column>
                </row>
                <row>
                    <column><label>Producer</label></column>
                    <column>
                        <sqldrop data="0" display="0" showdata="false" editable="true" id="producer">
                            <query>SELECT DISTINCT producer FROM coffees UNION SELECT '' ORDER BY producer ASC</query>
                        </sqldrop>
                    </column>
                    <column />
                    <column><label>Grade:</label></column>
                    <column>
                        <sqldrop data="0" display="0" showdata="false" editable="true" id="grade">
                            <query>SELECT DISTINCT grade FROM coffees UNION SELECT '' ORDER BY grade ASC</query>
                        </sqldrop>
                    </column>
                </row>
                <row>
                    <column><label>Milling:</label></column>
                    <column>
                        <sqldrop data="0" display="0" showdata="false" editable="true" id="milling">
                            <query>SELECT DISTINCT milling FROM coffees UNION SELECT '' ORDER BY milling ASC</query>
                        </sqldrop>
                    </column>
                    <column />
                    <column><label>Drying:</label></column>
                    <column>
                        <sqldrop data="0" display="0" showdata="false" editable="true" id="drying">
                            <query>SELECT DISTINCT drying FROM coffees UNION SELECT '' ORDER BY drying ASC</query>
                        </sqldrop>
                    </column>
                </row>
                <row>
                    <column><label>Bags:</label></column>
                    <column>
                        <line validator="numeric" id="bags" />
                    </column>
                    <column>
                        <button type="check" id="isDecaf" name="Decaffeinated" />
                    </column>
                    <column><label>by method:</label></column>
                    <column>
                        <sqldrop data="0" display="0" showdata="false" editable="true" id="decafMethod">
                            <query>SELECT DISTINCT decaf_method FROM decaf_coffees UNION SELECT '' ORDER BY decaf_method ASC</query>
                        </sqldrop>
                    </column>
                </row>
                <row>
                    <column colspan="2">
                        <line id="certdisplay" writable="false" />
                    </column>
                    <column column="2">
                        <button type="push" name="Add Certification" id="addcert" />
                    </column>
                    <column colspan="2">
                        <line id="certification" />
                    </column>
                </row>
            </layout>
        </formarray>
        <layout type="horizontal">
            <layout type="vertical">
                <label>Fees:</label>
                <sqltablearray columns="2" id="fees">
                    <column name="Fee Description" />
                    <column name="Amount" />
                </sqltablearray>
            </layout>
            <button name="Submit" type="push" id="submit" />
        </layout>
    </layout>
    <program>
        <![CDATA[
            var window = this;
			var convertToPounds = function(w, u) {
				switch(u) {
					case "g":
						return w * 0.0022;
					case "oz":
						return w * 0.0625;
					case "Kg":
						return w * 2.2;
				}
				return w;
			};
			var convertToPerPounds = function(w, u) {
				switch(u) {
					case "g":
						return w / 0.0022;
					case "oz":
						return w / 0.0625;
					case "Kg":
						return w / 2.2;
				}
				return w;
			};
            this.windowTitle = 'Typica - Coffee Purchase';
            var form = findChildObject(this, 'form');
            form.setMaximumElementHeight(320);
            var appendForm = function() {
                form.addElements(1);
                var thisCoffee = form.elementAt(form.elements() - 1);
                var decafButton = findChildObject(thisCoffee, 'isDecaf');
                var methodField = findChildObject(thisCoffee, 'decafMethod');
                methodField.enabled = false;
                decafButton.stateChanged.connect(function(state) {
                    if(state == 0)
                    {
                        methodField.enabled = false;
                    }
                    else
                    {
                        methodField.enabled = true;
                    }
                });
                var certificationButton = findChildObject(thisCoffee, 'addcert');
                var certSource = findChildObject(thisCoffee, 'certification');
                var certTarget = findChildObject(thisCoffee, 'certdisplay');
                certificationButton.clicked.connect(function() {
                    if(thisCoffee.certificationArray === undefined)
                    {
                        thisCoffee.certificationArray = new Array();
                    }
                    thisCoffee.certificationArray.push(certSource.text);
                    certTarget.text = thisCoffee.certificationArray.toString();
                    certSource.text = '';
                });
            };
            appendForm();
            var itemButton = findChildObject(this, 'newForm');
            itemButton.clicked.connect(function() {
                appendForm();
            });
            var invoiceField = findChildObject(this, 'invoice');
            var vendorField = findChildObject(this, 'vendor');
            var feesTable = findChildObject(this, 'fees');
            var submitButton = findChildObject(this, 'submit');
            var dateField = findChildObject(this, 'date');
            submitButton.clicked.connect(function() {
                var query = new QSqlQuery;
                var q = "INSERT INTO invoices VALUES (default, :invoice, :vendor, :date) RETURNING id";
                query.prepare(q);
                query.bind(":invoice", invoiceField.text);
                query.bind(":vendor", vendorField.currentText);
                query.bind(":date", dateField.date);
                query.exec();
                query.next();
                var invoiceNumber = query.value(0);
                for(var i = 0; i < form.elements(); i++)
                {
                    var current = form.elementAt(i);
                    var nameEntry = findChildObject(current, 'name');
                    var quantityEntry = findChildObject(current, 'quantity');
					var unitEntry = findChildObject(current, 'units');
                    var costEntry = findChildObject(current, 'cost');
                    var originEntry = findChildObject(current, 'origin');
                    var decafSelection = findChildObject(current, 'isDecaf');
                    var decafEntry = findChildObject(current, 'decafMethod');
                    if(nameEntry.currentText == '')
                    {
                        continue;
                    }
                    if(quantityEntry.text == '')
                    {
                        continue;
                    }
                    if(costEntry.text == '')
                    {
                        continue;
                    }
                    if(originEntry.currentText == '')
                    {
                        continue;
                    }
                    if(decafSelection.checked)
                    {
                        if(decafEntry.currentText == '')
                        {
                            continue;
                        }
                    }
                    if(decafSelection.checked)
                    {
                        q = "INSERT INTO decaf_coffees VALUES (default, :name, :reference, :unit, 0, 'Coffee: Unroasted', :origin, :region, :producer, :grade, :milling, :drying, :decafMethod) RETURNING id";
                    }
                    else
                    {
                        q = "INSERT INTO coffees VALUES (default, :name, :reference, :unit, 0, 'Coffee: Unroasted', :origin, :region, :producer, :grade, :milling, :drying) RETURNING id";
                    }
                    query.prepare(q);
                    query.bind(":name", nameEntry.currentText);
                    var referenceEntry = findChildObject(current, 'reference');
                    if(referenceEntry.currentText == '')
                    {
                        query.bind(":reference", null);
                    }
                    else
                    {
                        query.bind(":reference", referenceEntry.currentText);
                    }
					query.bind(":unit", 'lb');
                    query.bind(":origin", originEntry.currentText);
                    var regionEntry = findChildObject(current, 'region');
                    if(regionEntry.currentText == '')
                    {
                        query.bind(":region", null);
                    }
                    else
                    {
                        query.bind(":region", regionEntry.currentText);
                    }
                    var producerEntry = findChildObject(current, 'producer');
                    if(producerEntry.currentText == '')
                    {
                        query.bind(":producer", null);
                    }
                    else
                    {
                        query.bind(":producer", producerEntry.currentText);
                    }
                    var gradeEntry = findChildObject(current, 'grade');
                    if(gradeEntry.currentText == '')
                    {
                        query.bind(":grade", null);
                    }
                    else
                    {
                        query.bind(":grade", gradeEntry.currentText);
                    }
                    var millingEntry = findChildObject(current, 'milling');
                    if(millingEntry.currentText == '')
                    {
                        query.bind(":milling", null);
                    }
                    else
                    {
                        query.bind(":milling", millingEntry.currentText);
                    }
                    var dryingEntry = findChildObject(current, 'drying');
                    if(dryingEntry.currentText == '')
                    {
                        query.bind(":drying", null);
                    }
                    else
                    {
                        query.bind(":drying", dryingEntry.currentText);
                    }
                    if(decafSelection.checked)
                    {
                        query.bind(":decafMethod", decafEntry.currentText);
                    }
                    query.exec();
                    query.next();
                    var item_id = query.value(0);
                    q = "INSERT INTO purchase VALUES(:time, :item, :quantity, :cost, :vendor)";
                    query.prepare(q);
                    query.bind(":time", dateField.date);
                    query.bind(":item", item_id);
                    query.bind(":quantity", convertToPounds(parseFloat(quantityEntry.text), unitEntry.currentText));
                    var costModifier = findChildObject(current, 'costModifier');
                    if(costModifier.currentText == 'per unit')
                    {
                        query.bind(":cost", convertToPerPounds(parseFloat(costEntry.text), unitEntry.currentText));
                    }
                    else
                    {
                        query.bind(":cost", Number(costEntry.text) / convertToPounds(parseFloat(quantityEntry.text), unitEntry.currentText));
                    }
                    query.bind(":vendor", vendorField.currentText);
                    query.exec();
                    q = "INSERT INTO lb_bag_conversion VALUES(:item, :conversion)";
                    query.prepare(q);
                    query.bind(":item", item_id);
                    var bagsEntry = findChildObject(current, 'bags');
                    var conversion = convertToPounds(parseFloat(quantityEntry.text), unitEntry.currentText) / Number(bagsEntry.text);
                    query.bind(":conversion", conversion);
                    query.exec();
                    q = "INSERT INTO invoice_items VALUES(:id, 'PURCHASE', :item, :description, :cost)";
                    query.prepare(q);
                    query.bind(":id", invoiceNumber);
                    query.bind(":item", item_id);
                    query.bind(":description", nameEntry.currentText);
                    if(costModifier.currentText == 'per unit')
                    {
                        query.bind(":cost", Number(costEntry.text) * Number(quantityEntry.text));
                    }
                    else
                    {
                        query.bind(":cost", Number(costEntry.text));
                    }
                    query.exec();
                    var certifications = findChildObject(current, 'certdisplay');
                    var certlist = certifications.text.split(",");
                    q = "INSERT INTO certifications VALUES (:item, :certification)";
                    query.prepare(q);
                    query.bind(":item", item_id);
                    for(var j = 0; j < certlist.length; j++)
                    {
                        query.bind(":certification", certlist[j]);
                        query.exec();
                    }
                }
                var descriptionArray = sqlToArray(feesTable.columnArray(0, 0));
                var q = "INSERT INTO invoice_items VALUES (:id, 'FEE', NULL, :description, :cost)";
                query.prepare(q);
                query.bind(":id", invoiceNumber);
                if(descriptionArray.length > 0)
                {
                    for(var i = 0; i < descriptionArray.length; i++)
                    {
                        if(feesTable.data(i, 0, 0).value == '')
                        {
                            continue;
                        }
                        if(feesTable.data(i, 1, 0).value == '')
                        {
                            continue;
                        }
                        query.bind(":description", feesTable.data(i, 0, 0).value);
                        query.bind(":cost", Number(feesTable.data(i, 1, 0).value));
                        query.exec();
                    }
                }
                window.close();
            });
            this.showMaximized();
        ]]>
    </program>
</window>