Fixed slight bug in void system

Update test data

Entities/Buttons/Model.fs

@@ -7,12 +7,11 @@ let attr = Giraffe.ViewEngine.HtmlElements.attr
 
 let getItemActionAttributes (itemCode: string) =
     let item = Entity.GetFirstByColumn<item> "code" (StringTrim itemCode)
-    [(attr "data-item") <| jsonEncode item]
+    [item |> jsonEncode |> attr "data-item"]
 
 let getGridActionAttributes (gridId: int) = [(attr "data-grid") <| jsonEncode gridId]
 
 let getActionAttributes (action: string) (actionValue: string) =
-
     match action with
         | "item" -> getItemActionAttributes actionValue
         | "grid" -> actionValue |> int |> getGridActionAttributes

Installer/Router.fs

@@ -4,7 +4,10 @@ open DredgePos
 open Saturn
 open Giraffe
 
+let installer = (warbler (fun _ -> htmlString (Controller.RunAllMigrations ())))
+
 let router = router {
     pipe_through Ajax.Router.pipeline
-    get "/" (warbler (fun _ -> htmlString (Controller.RunAllMigrations ())))
+    get "/" installer
+    get "" installer
 }

OrderScreen/View.fs

@@ -116,6 +116,9 @@ let itemButtonImage (button: button) =
         _style $"background-image:url(\"/images/items/{button.image}\");"
     ] []
 
+let _data_primary_action = attr "data-primary-action"
+let _data_secondary_action = attr "data-secondary-action"
+
 let itemButton (button: button) =
     let extraClasses =
         if button.image.Length > 0 then button.extra_classes + " hasImage"
@@ -128,8 +131,8 @@ let itemButton (button: button) =
         yield! primaryAttributes
         yield! secondaryAttributes
         _style button.extra_styles
-        (attr "data-primary-action") button.primary_action
-        (attr "data-secondary-action") button.secondary_action
+        _data_primary_action button.primary_action
+        _data_secondary_action button.secondary_action
     ] [
         if button.image.Length > 0 then itemButtonImage button
         span [_class "text "] [str button.text]

Program.fs

@@ -17,7 +17,10 @@ module Program =
         forward "/install" DredgePos.Installer.Router.router
     }
 
-    let app = application {
+    let app =
+        let ipAddress = System.Net.Dns.GetHostEntry(System.Net.Dns.GetHostName()).AddressList[2];
+        printf $"DredgePOS is now running at http://{ipAddress}:5001\n"
+        application {
             use_mime_types [(".woff", "application/font-woff")]
             use_static "wwwroot"
             use_router router

tsconfig.json

@@ -8,7 +8,7 @@
         "removeComments":false,
         "preserveConstEnums":true,
         "outDir":"wwwroot/scripts",
-        "target":"ES2016",
+        "target":"ESNext",
         "sourceMap":true,
         "moduleResolution": "node"
     },

typescript/dredgepos.core.ts

@@ -184,15 +184,46 @@ const setElementVisibilityByMode = () => {
 
 }
 
-const pulseElement = (element: JQuery) => element.addClass('pulse').on('animationend', () => element.removeClass('pulse'))
+const getPercentageOfPageContainerWidth = (pixels: number) => ( (pixels / $('#pageContainer').width()) * 100) + '%'
+
+const pulseElement = (element: JQuery) => {
+    const orderItem: orderItem = element.data('order-item')
+    removeOrderItemsToPulse(orderItem.id)
+    element
+        .addClass('pulse')
+        .on('animationend', () => element.removeClass('pulse'))
+}
+
+Array.prototype.collect = function<x, y>(this: x[], func: (item: x) => y[]) {
+    return this.map(func).flat(1)
+}
 
 Array.prototype.where = function<x>(this: x[], property: string, value: any) {
     return this.filter( item => (item as any)[property] === value)[0] || null
 }
+Array.prototype.first = function<x>(this: x[]) {
+    return this[0]
+}
+Array.prototype.last = function<x>(this: x[]) {
+    return this[this.length-1]
+}
+Array.prototype.unique = function<x>(this: x[]) {
+    return [... new Set(this)]
+}
+
+const clone = <x>(obj: x) => JSON.parse(JSON.stringify(obj)) as x
 
 const money = (amount: number, fromCents=true) => currency(amount, {fromCents: fromCents})
 const moneyFromString = (amount: string) => currency(amount)
 
+const array_push = <x>(array: x[], value: x) => {
+    let copy = array.slice()
+    return [...copy, value]
+};
+const array_remove = <x>(array: x[], valueToRemove: x) => array.filter(item => item != valueToRemove)
+const array_pop = <x>(array:x[]) => array.slice(0,-1);
+const array_unique = <x>(array:x[]) => [... new Set(array)]
+
 const toggle = (e: JQuery.TriggeredEvent) => {
     const button = $(e.target)
     const toggleGroup =  button.closest('.toggleGroup')

typescript/dredgepos.orderScreen.ts

@@ -7,32 +7,34 @@ type OrderScreenData = {
 
 type OrderScreen = {
     order_screen_pages: order_screen_page[]
-    last_added_item: orderItem
     order_items: orderItem[]
     sales_categories: sales_category[]
     print_groups: print_group[]
     order_item_id_generator: Generator
     selected_item_ids: number[]
+    order_item_ids_to_pulse: number[]
     qty_override: number
     print_group_override: print_group
     custom_item: item,
     selected_cover: number
     table: floorplan_table,
+    last_added_item_ids: number[]
 }
 
 let OrderScreen : OrderScreen = {
     order_screen_pages: null,
-    last_added_item: null,
     order_items: [],
     print_groups: [],
     sales_categories: [],
     order_item_id_generator: newestId(),
     selected_item_ids: [],
+    order_item_ids_to_pulse: [],
     qty_override: 1,
     print_group_override: null,
     custom_item: null,
     selected_cover: 0,
     table: null,
+    last_added_item_ids: [],
 }
 
 const loadPageGroup = (e: Event) => {
@@ -57,32 +59,30 @@ const loadPageGroup = (e: Event) => {
 }
 
 const setupOrderScreen = (data: OrderScreenData) => {
-
-
     OrderScreen.order_screen_pages = data.order_screen_pages
     OrderScreen.sales_categories = data.sales_categories
     OrderScreen.print_groups = data.print_groups
     OrderScreen.custom_item = data.custom_item
 
     updateOrderBoxTotals()
-    let doc = $(document)
-    doc.on('click', '.nextButton', goToNextPage)
-    doc.on('click', '.prevButton', goToPrevPage)
-    doc.on('click', '.loadPageGroup', loadPageGroup)
-    doc.on('click', '[data-primary-action=item]', itemButtonClicked)
-    doc.on('click', '[data-primary-action=grid],[data-secondary-action=grid]', gridButtonClicked)
-    doc.on('click', '.closeGrid', hideGrids)
-    doc.on('click', '.freetextButton', freetext)
-    doc.on('click', '.openItemButton', customItem)
-    doc.on('click', '.orderBoxTable tbody tr', itemRowClicked)
-    doc.on('click', '.voidButton', voidButtonClicked)
-    doc.on('dblclick', '.voidButton', voidLastItem)
-    doc.on('click', '.numpadButton', overrideQty)
-    doc.on('click', '.accumulateButton', () => toggleMode('accumulate'))
-    doc.on('click', '.changeCoverNumberButton', changeCoverNumberPrompt)
-    doc.on('click', '.showCoverSelectorButton', showCoverSelector)
-    doc.on('click', '.coverSelectorButton', coverSelected)
-    doc.on('change', '[name=print_override]', printGroupOverride)
+    $(document)
+        .on('click', '.nextButton', goToNextPage)
+        .on('click', '.prevButton', goToPrevPage)
+        .on('click', '.loadPageGroup', loadPageGroup)
+        .on('click', getElementsByAction('item'), itemButtonClicked)
+        .on('click', getElementsByAction('grid'), gridButtonClicked)
+        .on('click', '.closeGrid', hideGrids)
+        .on('click', '.freetextButton', freetext)
+        .on('click', '.openItemButton', customItem)
+        .on('click', '.orderBoxTable tbody tr', itemRowClicked)
+        .on('click', '.voidButton', voidButtonClicked)
+        .on('dblclick', '.voidButton', voidLastItem)
+        .on('click', '.numpadButton', overrideQty)
+        .on('click', '.accumulateButton', () => toggleMode('accumulate'))
+        .on('click', '.changeCoverNumberButton', changeCoverNumberPrompt)
+        .on('click', '.showCoverSelectorButton', showCoverSelector)
+        .on('click', '.coverSelectorButton', coverSelected)
+        .on('change', '[name=print_override]', printGroupOverride)
 
     turnOnMode('accumulate')
 
@@ -98,6 +98,8 @@ const setupOrderScreen = (data: OrderScreenData) => {
 
 }
 
+const getElementsByAction = (action: string) => `[data-primary-action=${action}], [data-secondary-action=${action}]`
+
 /**
  * @param direction 1 for forward, -1 for backwards.
  * @param button
@@ -111,88 +113,156 @@ const navigatePage = (direction: number, button: JQuery) => {
     grid.get()[0].scrollLeft += grid.width() * direction
 }
 
+const getOrderBox = () => $('.orderBoxTable tbody')
 const goToNextPage = (e: JQuery.TriggeredEvent) => navigatePage(1, $(e.target))
 const goToPrevPage = (e: JQuery.TriggeredEvent) => navigatePage(-1, $(e.target))
 
-const addItemToOrderBox = (orderItem:orderItem) => {
-    const orderBox = $('.orderBoxTable tbody')
-    let selectedRows = orderBox.find('tr.selected')
-    let lastRow : JQuery = selectedRows.length ? getLastInstructionRow(selectedRows.first()) : orderBox.find('tr').last()
-    const existingRow = orderBox
-        .find('tr')
-        .filterByData('item', orderItem.item)
-        .filterByData('print_group', orderItem.print_group_id)
-        .filterByData('cover', orderItem.cover)
-        .last()
+const setItemQty = (orderItem: orderItem, qty: number) => {
+    if(!orderItem || !OrderScreen.order_items.find(existingItem => orderItem.id == existingItem.id)) return;
 
+    const instructionIds = getInstructionItems(orderItem.id).map(orderItem => orderItem.id)
 
-    //If accumulating, just increase the quantity of the existing row.
-    if(existingRow.length > 0 && isInMode('accumulate')){
-        incrementRowQty(existingRow, orderItem.qty)
-        scrollToElement(existingRow)
-        existingRow.pulse()
+    if(qty < 1){
+        const newItems = OrderScreen.order_items.filter(existingOrderItem =>
+            (existingOrderItem.id != orderItem.id) && !instructionIds.includes(existingOrderItem.id)
+        )
+
+        OrderScreen.selected_item_ids = array_remove(OrderScreen.selected_item_ids, orderItem.id)
+        if(orderItem.item.item_type == "item") {
+            const lastItem = newItems.filter(orderItem => orderItem.item.item_type == "item")?.last()
+            OrderScreen.last_added_item_ids = newItems.length > 0 && lastItem ? [lastItem.id] : []
+        }
+        setOrderItems(newItems)
+        return;
+    }
+
+    const newItems = OrderScreen.order_items.map(existingOrderItem => {
+            if(existingOrderItem.id == orderItem.id){
+                existingOrderItem.qty = qty
+            }
+            return existingOrderItem
+        })
+
+    setOrderItems(newItems)
+}
+
+const incrementItemQty = (orderItem:orderItem) => setItemQty(orderItem, orderItem?.qty+1)
+const decrementItemQty = (orderItem:orderItem) => setItemQty(orderItem, orderItem?.qty-1)
+
+const deselectAllRows = () => {
+    OrderScreen.selected_item_ids = []
+    $('tr.selected').removeClass('selected')
+}
+
+const addOrderItemsToPulse = (id: number) => OrderScreen.order_item_ids_to_pulse = array_push(OrderScreen.order_item_ids_to_pulse, id)
+const removeOrderItemsToPulse = (id: number) => OrderScreen.order_item_ids_to_pulse = array_remove(OrderScreen.order_item_ids_to_pulse, id)
+
+const addItemToOrderBox = (newOrderItem:orderItem) => {
+    const existingItems = OrderScreen.order_items
+        .filter(existingOrderItem =>
+          existingOrderItem.item.id == newOrderItem.item.id
+          && existingOrderItem.print_group.id == newOrderItem.print_group.id
+          && existingOrderItem.cover == newOrderItem.cover
+        )
+
+    if(existingItems.length > 0 && isInMode('accumulate')) {
+        addOrderItemsToPulse(existingItems[0].id)
+        incrementItemQty(existingItems[0])
+        OrderScreen.last_added_item_ids = [existingItems[0].id]
     } else {
-        const newRow = createOrderRow(orderItem)
-        lastRow.length > 0
-            ? lastRow.after(newRow)
-            : orderBox.append(newRow)
-        scrollToElement(newRow)
-        newRow.pulse()
+        addOrderItemsToPulse(newOrderItem.id)
+        if(!OrderScreen.selected_item_ids.length) {
+            const newItems = array_push(OrderScreen.order_items, newOrderItem)
+            setOrderItems(newItems)
+        } else {
+            const newItems =
+                OrderScreen.order_items
+                    .collect(existingOrderItem => {
+                        const firstSelectedItemId = getLastInstructionItem(OrderScreen.selected_item_ids.first()).id
+                        return firstSelectedItemId == existingOrderItem.id
+                            ? [existingOrderItem, newOrderItem]
+                            : [existingOrderItem]
+                    })
+            setOrderItems(newItems)
+        }
+        OrderScreen.last_added_item_ids = [newOrderItem.id]
+    }
+    deselectAllRows()
 }
 
-    deselectRow(orderBox.find('tr'))
+const getParentItem = (orderItemId: number, itemList:orderItem[]) => {
+    const itemIndex = itemList.findIndex(orderItem => orderItem.id === orderItemId);
+    if(itemList[itemIndex].item.item_type == "item"){
+        return itemList[itemIndex]
+    }
+    return itemList
+            .filter((orderItem, index) => index < itemIndex && orderItem.item.item_type === 'item')
+            .last()
 }
 
+const getInstructionItems = (orderItemId: number) => {
+    const itemIndex = OrderScreen.order_items.findIndex(orderItem => orderItem.id === orderItemId);
+    if(!OrderScreen.order_items[itemIndex+1]
+        || OrderScreen.order_items[itemIndex+1].item.item_type == "item"
+        || OrderScreen.order_items[itemIndex].item.item_type == "instruction"
+    )
+        return [OrderScreen.order_items[itemIndex]]
+
+
+    const nextItem =
+        OrderScreen.order_items
+            .filter((orderItem, index) =>  index > itemIndex && orderItem.item.item_type === 'item')
+            ?.first()
+    if(!nextItem) {
+        return OrderScreen.order_items.filter((orderItem, index) => index > itemIndex)
+    }
+    const nextItemIndex = OrderScreen.order_items.findIndex(orderItem => orderItem.id === nextItem.id);
+    return OrderScreen.order_items.slice(itemIndex, nextItemIndex)
+
+}
+
+const getLastInstructionItem = (orderItemId: number) => getInstructionItems(orderItemId).last()
 
 const addInstructionToOrderBox = (instruction: orderItem) => {
-    const orderBox = $('.orderBoxTable tbody')
-    let selectedRows = orderBox.find('tr.selected')
-    const newRow = createOrderRow(instruction)
-
     //If no items are added, then you can't add an instruction row.
-    if(!orderBox.find('tr.itemRow').length) return
+    if(!OrderScreen.order_items.length) return
 
-    if(selectedRows.length > 0){
-        selectedRows.each( (_, row) => {
-            const selectedRow = $(row)
-            const parentRow = getParentRow(selectedRow)
-            if(parentRow.is(selectedRow) || !parentRow.hasClass('selected')) {
-                const newRow = createOrderRow(instruction)
-                getLastInstructionRow(selectedRow).after(newRow)
-                newRow
-                    .setColumnValue( lang('printgroup_header'), selectedRow.getColumnValue(lang('printgroup_header')) )
-
-
-                if(parentRow.hasClass('selected')){
-                    selectRow(newRow)
-                } else {
-                    newRow.pulse()
-                }
-
-                scrollToElement(newRow)
-            }
+    const addAfter = OrderScreen.selected_item_ids.length
+        ? OrderScreen.selected_item_ids
+            .filter(selectedItemId => {
+                const orderItem = OrderScreen.order_items.find(orderItem => orderItem.id == selectedItemId)
+                const parentItem = getParentItem(selectedItemId, OrderScreen.order_items)
+                return !(orderItem.item.item_type == "instruction" && OrderScreen.selected_item_ids.includes(parentItem.id))
             })
+            .map(selectedItemId => getLastInstructionItem(selectedItemId).id)
+            .unique()
+        : OrderScreen.last_added_item_ids.map(itemId => getLastInstructionItem(itemId).id)
+
+    const newItems = OrderScreen.order_items.collect(existingItem => {
+        const newInstruction = createNewOrderItem(instruction.item, instruction.qty, instruction.print_group)
+        addOrderItemsToPulse(newInstruction.id)
+        return addAfter.includes(existingItem.id)
+            ? [existingItem, newInstruction]
+            : [existingItem]
+    })
+    setOrderItems(newItems)
 }
 
-    const lastRow = orderBox.find('tr').last()
-    newRow
-        .setColumnValue(lang('printgroup_header'), lastRow.getColumnValue(lang('printgroup_header')))
-        .appendTo(orderBox)
-        .pulse()
-    scrollToElement(newRow)
+const createNewOrderItem = (item: item, qty: number, printGroup: print_group) : orderItem => {
+    return {
+        id: OrderScreen.order_item_id_generator.next().value,
+        item: clone(item),
+        qty: qty,
+        print_group: printGroup,
+        cover: OrderScreen.selected_cover,
+    }
 }
 
 
 const addNewItem = (item: item, qty = 1) => {
     const salesCategory = OrderScreen.sales_categories.where('id', item.sales_category_id)
     const printGroup = OrderScreen.print_group_override ?? OrderScreen.print_groups.where('id', salesCategory.print_group_id)
-    const orderItem : orderItem = {
-        id: OrderScreen.order_item_id_generator.next().value,
-        item: item,
-        qty: qty,
-        print_group_id: printGroup,
-        cover: OrderScreen.selected_cover,
-    }
+    const orderItem = createNewOrderItem(item, qty, printGroup)
 
     switch(item.item_type){
         case 'instruction':
@@ -205,52 +275,34 @@ const addNewItem = (item: item, qty = 1) => {
     }
 }
 
-const getLastInstructionRow = (row: JQuery) => {
-        let stopCounting = false
-        let finalRow = row
-        row.nextAll().each(function (index, activeRow){
-            if(!stopCounting){
-                if($(activeRow).hasClass('instructionRow')){
-                    finalRow = $(activeRow)
-                } else {
-                    stopCounting = true
-                }
-            }
-        })
-
-        return $(finalRow)
-}
-
-const getParentRow = (row: JQuery) =>
-    row.hasClass('instructionRow')
-        ? row.prevAll('.itemRow').first()
-        : row
-
-
-const incrementRowQty = (row: JQuery, qty: number) => {
-    const existingQty = Number(row.getColumnValue(lang('qty_header')))
-    const newQty = qty + existingQty
-    row.setColumnValue(lang('qty_header'), newQty)
-    calculateRowTotal(row)
-}
-
 const renderOrderBox = () => {
-    const orderBox = $('.orderBoxTable')
-    const tbody = orderBox.children('tbody')
+    const orderBox = getOrderBox()
     const newTbody = $('<tbody />')
     OrderScreen.order_items.forEach(orderItem => {
         const newRow = createOrderRow(orderItem)
         newTbody.append(newRow)
-        newRow.pulse()
+
         if(OrderScreen.selected_item_ids.includes(orderItem.id)){
-            selectRow(newRow)
+            newRow.addClass('selected')
+        }
+
+        if(OrderScreen.order_item_ids_to_pulse.includes(orderItem.id)){
+            newRow.pulse()
         }
     })
 
-    tbody.replaceWith(newTbody)
-    const element = orderBox.find('tbody tr').last().get()[0]
+    orderBox.replaceWith(newTbody)
+    const element = newTbody.find('tr').last().get()[0]
+    if(element) {
         element.scrollIntoView()
-    OrderScreen.last_added_item = null
+    }
+        updateOrderBoxTotals()
+}
+
+
+const setOrderItems = (orderItems: orderItem[]) => {
+    OrderScreen.order_items = orderItems
+    renderOrderBox()
 }
 
 const createOrderRow = (orderItem: orderItem) => {
@@ -263,10 +315,10 @@ const createOrderRow = (orderItem: orderItem) => {
         .setColumnValue(lang('price_header'), price)
         .setColumnValue(lang('id_header'), orderItem.item.id)
         .setColumnValue(lang('total_price_header'), price.multiply(orderItem.qty))
-        .setColumnValue(lang('printgroup_header'), orderItem.print_group_id?.name)
+        .setColumnValue(lang('printgroup_header'), orderItem.print_group?.name)
         .data('order-item-id', orderItem.id)
-        .data('order-item-id', orderItem.id)
-        .data('print_group', orderItem.print_group_id)
+        .data('order-item', orderItem)
+        .data('print_group', orderItem.print_group)
         .data('cover', orderItem.cover)
         .data('item', orderItem.item)
         .find('td.itemCell')
@@ -309,14 +361,13 @@ const hideGrids = () => $('.gridContainer').hide()
 
 const gridHtmlGenerated = (gridData: {gridHtml:string, grid: grid}) => {
     const gridContainer = $('.gridContainer')
-    const gridCellWidth = getGridCellWidth()
-    const gridCellHeight = getGridCellHeight()
+    const cellDimensions = getGridCellDimensions()
     const grid = gridData.grid
     const gridHtml = gridData.gridHtml
 
     gridContainer
         .show()
-        .width(gridCellWidth * grid.cols)
+        .width(cellDimensions.width * grid.cols)
         .children('.gridContainerHeader')
         .children('span')
         .text(grid.name)
@@ -326,134 +377,97 @@ const gridHtmlGenerated = (gridData: {gridHtml:string, grid: grid}) => {
         .html(gridHtml)
         .show()
         .parent()
-        .height(gridCellHeight * grid.rows)
+        .height(cellDimensions.height * grid.rows)
         .closest('.gridContainer')
         .find('.pageNavigation')
         .toggle(gridContainer.find('.gridPage').length >  1)
-        .height(gridCellHeight)
+        .height(cellDimensions.height)
 }
 
 const itemRowClicked = (e: JQuery.TriggeredEvent) => {
     const row = $(e.target).closest('tr')
+    const orderItem: orderItem = row.data('order-item')
 
     if(isInMode('void')){
-        voidRows(row)
+        voidOrderItems([orderItem.id])
         turnOffMode('void')
         return
     }
 
-    if(!row.hasClass('selected')) selectRow(row)
-    else deselectRow(row)
-
+    if(!row.hasClass('selected')) {
+        OrderScreen.selected_item_ids = array_push(OrderScreen.selected_item_ids, orderItem.id)
+        getInstructionItems(orderItem.id).forEach(instruction => OrderScreen.selected_item_ids = array_push(OrderScreen.selected_item_ids, instruction.id))
+        OrderScreen.selected_item_ids = OrderScreen.selected_item_ids.unique()
+    }
+    else {
+        OrderScreen.selected_item_ids = array_remove(OrderScreen.selected_item_ids, orderItem.id)
+        getInstructionItems(orderItem.id).forEach(instruction => OrderScreen.selected_item_ids = array_remove(OrderScreen.selected_item_ids, instruction.id))
     }
 
-const selectRow = (row: JQuery) => {
-    row.addClass('selected')
-    const instructionRows = row.nextUntil('.itemRow')
+    renderOrderBox()
+}
 
-    if(row.hasClass('itemRow') && instructionRows.length){
-        instructionRows.each((index, row) => {
-            selectRow($(row))
+const voidOrderItems = (orderItemIds: number[]) => {
+    const originalOrderItemList = clone(OrderScreen.order_items)
+    const originalSelectedIds = clone(OrderScreen.selected_item_ids)
+    orderItemIds.forEach(orderItemId => {
+        const orderItemToVoid = originalOrderItemList.find(item => item.id == orderItemId)
+        if(orderItemToVoid.item.item_type == "instruction") {
+            const parentItem = getParentItem(orderItemToVoid.id, originalOrderItemList)
+            if(originalSelectedIds.includes(parentItem.id) && parentItem.qty-1 < 1 || !originalSelectedIds.includes(parentItem.id)){
+                decrementItemQty(orderItemToVoid)
+            }
+        } else decrementItemQty(orderItemToVoid)
     })
 }
-}
-
-const deselectRow = (row: JQuery) => {
-    row.removeClass('selected')
-    const instructionRows = row.nextUntil('.itemRow')
-
-    if(row.hasClass('itemRow') && instructionRows.length){
-        deselectRow(instructionRows)
-    }
-}
-
-const deleteRow = (row: JQuery) => row.find('*:not(.hidden)').slideUp('fast', () => row.remove())
-
-const voidInstructionRow = (row: JQuery) => {
-    if(!row.prevAll('.itemRow').first().hasClass('selected'))
-        deleteRow(row)
-}
-
-const voidItemRow = (row : JQuery) => decrementQty(row)
-
-const voidRow = (row: JQuery) => {
-    if(row.hasClass('itemRow')) voidItemRow(row)
-    else voidInstructionRow(row)
-}
-
-const voidRows = (rows: JQuery) => rows.each((index, row) => voidRow($(row)))
 
 const voidButtonClicked = () => {
-    const selectedRows = $('.orderBox tr.selected')
     if(isInMode('void')){
         turnOffMode('void')
-    } else if(selectedRows.length){
-        voidRows(selectedRows)
+    } else if(OrderScreen.selected_item_ids.length){
+        voidOrderItems(OrderScreen.selected_item_ids)
     } else {
         turnOnMode('void')
     }
 }
 
 const voidLastItem = () => {
-    const orderBox = $('.orderBoxTable tbody')
-    const allRows = orderBox.find('tr')
-    if(allRows.length < 1) return
-    voidRows(allRows.last())
+    if (OrderScreen.order_items.length)
+        decrementItemQty(OrderScreen.order_items.last())
 }
 
+const getSelectedTotals = () =>
+    OrderScreen.selected_item_ids
+        .map(selectedId => OrderScreen.order_items.find(orderItem => orderItem.id == selectedId))
+        .reduce((resultSoFar, currentOrderItem) => {
+            return resultSoFar.add(currentOrderItem.item.price1 * currentOrderItem.qty)
+        }, money(0))
+
+const getTotals = () =>
+    OrderScreen.order_items
+        .reduce((resultSoFar, currentOrderItem) => {
+            return resultSoFar.add(currentOrderItem.item.price1 * currentOrderItem.qty)
+        }, money(0))
+
 const updateOrderBoxTotals = () => {
-    const allRows = $('.orderBoxTable tbody tr')
-    const selectedRows = $('.orderBoxTable tbody tr.selected')
-    const completeTotal = lang('totalPrice', getTotalOfRows(allRows))
-    const selectedTotal = lang('selectedPrice', getTotalOfRows(selectedRows))
+    const completeTotal = lang('totalPrice', getTotals().format())
+    const selectedTotal = lang('selectedPrice', getSelectedTotals().format())
 
     $('.orderBoxTotal').text(completeTotal)
     $('.orderBoxSelectedTotal').text(selectedTotal)
 }
 
-const getTotalOfRows = (rows: JQuery) => {
-    return money(rows
-        .find('td.totalPriceCell')
-        .get()
-        .map(cell => Number(cell.innerText))
-        .filter(number => !isNaN(number))
-        .reduce( (total, number) => total + number , 0), false)
-        .format()
-}
-
-const getQty = (row: JQuery) => Number(row.getColumnValue(lang('qty_header')))
-const getUnitPrice = (row: JQuery) => moneyFromString(row.getColumnValue(lang('price_header')))
-
-const calculateRowTotal = (row: JQuery) => {
-    let price = getUnitPrice(row)
-    let qty = getQty(row)
-    row.setColumnValue(lang('total_price_header'), price.multiply(qty))
-}
-
-const decrementQty = (row: JQuery, qty=1) => {
-    const existingQty = getQty(row)
-
-    if(existingQty <= 1){
-        const childRows = row.nextUntil('.itemRow')
-        deleteRow(row)
-        deleteRow(childRows)
-        return
-    }
-    row.setColumnValue(lang('qty_header'), existingQty - qty)
-    calculateRowTotal(row)
-}
-
 const scrollToElement = (JQueryElement: JQuery) => {
     const element = JQueryElement.get()[0]
     const container = JQueryElement.closest('.orderBox').get()[0]
     const containerTop = $(container).scrollTop()
-    const containerBottom = containerTop + $(container).height();
+    const containerBottom = containerTop + $(container).height()
     const elemTop = element.offsetTop
-    const elemBottom = elemTop + $(element).height();
+    const elemBottom = elemTop + $(element).height()
     if (elemTop < containerTop) {
-        $(container).scrollTop(elemTop);
+        $(container).scrollTop(elemTop)
     } else if (elemBottom > containerBottom) {
-        $(container).scrollTop(elemBottom - $(container).height());
+        $(container).scrollTop(elemBottom - $(container).height())
     }
 }
 
@@ -514,21 +528,28 @@ const customItemTextSubmitted = (text: string) => {
     showVirtualNumpad(lang('enter_item_price'), 4, false, true, true, submitFunction)
 }
 
-const getGridCellHeight = () => $('#pageGroupContainer').height()/8
-const getGridCellWidth = () => $('#pageGroupContainer').width()/6
-
+const getGridCellDimensions = () => {
+    const container = $('#pageGroupContainer')
+    return {
+        height: container.height()/8,
+        width: container.width()/6
+    }
+}
 
 const showCoverSelector = (event: JQuery.TriggeredEvent) => {
     const button = $(event.target)
-    const gridHeight = getGridCellHeight()
-
+    const gridHeight = getGridCellDimensions().height
     const coverSelector = $('.coverSelector')
+
+    const buttonPositionLeftPercent = getPercentageOfPageContainerWidth(button.offset().left)
+    const buttonWidthPercent = getPercentageOfPageContainerWidth(button.width())
+
     coverSelector
         .toggle(!coverSelector.is(':visible'))
-        .width(button.width())
         .css({
-            left: button.offset().left + 'px',
-            top: button.offset().top + button.height() + 'px',
+            width: buttonWidthPercent,
+            left: buttonPositionLeftPercent,
+            top: (button.offset().top + button.height()) + 'px'
         })
         .find('.coverSelectorButton')
         .height(gridHeight)
@@ -566,7 +587,7 @@ const changeCoverNumberPrompt = () =>
 const changeCoverNumberPromptSubmitted = (value: string) => updateCoverNumbers(Number(value))
 
 const updateCoverNumbers = (covers: number) => {
-    let newTable = Object.assign({}, OrderScreen.table)
+    let newTable = clone(OrderScreen.table)
     newTable.default_covers = covers
     ajax('/order/updateCovers', newTable, 'post', coverNumbersUpdated, null, null)
 }

typescript/keyboards.ts

@@ -25,9 +25,9 @@ let showVirtualNumpad = (heading: string, maxlength = 4, isPassword: boolean, al
         inputBox.text('');
 
         numpad.data('maxlength', maxlength)
-        numpad.data('submitfunction', submitFunction)
+        numpad.data('submit-function', submitFunction)
         numpad.data('password', isPassword);
-        numpad.data('allowdecimals', allowDecimals);
+        numpad.data('allow-decimals', allowDecimals);
 
         $(document).off('keyup');
         $(document).on('keyup', e => {
@@ -64,9 +64,9 @@ let showVirtualNumpad = (heading: string, maxlength = 4, isPassword: boolean, al
      let virtualNumpadInput = (input: string) => {
         let inputBox = $('#virtualNumpadInput')
         let numpad = $('#virtualNumpad')
-        let maxlength = numpad.data('maxlength')
-        let allowDecimals = numpad.data('allowdecimals')
-        let submitFunction = numpad.data('submitfunction')
+        let maxlength : number = numpad.data('maxlength')
+        let allowDecimals: boolean = numpad.data('allow-decimals')
+        let submitFunction : Function = numpad.data('submit-function')
         let allowedValues = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'submit', 'clear']
         let currentValue = numpad.data('value').toString()
 
@@ -144,7 +144,7 @@ let showVirtualNumpad = (heading: string, maxlength = 4, isPassword: boolean, al
         inputBox.val('')
         keyboard.data('maxlength', maxlength)
         keyboard.data('password', isPassword)
-        keyboard.data('submitfunction', submitFunction)
+        keyboard.data('submit-function', submitFunction)
         inputBox.attr('autofocus', 'autofocus');
         inputBox.trigger('focus')
         inputBox.trigger('click')
@@ -175,7 +175,7 @@ let showVirtualNumpad = (heading: string, maxlength = 4, isPassword: boolean, al
                 break;
             case 'submit':
                 hideVirtualKeyboard();
-                let submitFunction = keyboard.data('submitfunction')
+                let submitFunction = keyboard.data('submit-function')
                 submitFunction(inputBox.val());
                 break;
             case 'shift':

typescript/types.ts

@@ -10,7 +10,7 @@ interface order {
 interface orderItem {
     id: number
     qty: number
-    print_group_id: print_group
+    print_group: print_group
     item: item
     cover: number
 }
@@ -108,4 +108,8 @@ type sales_category = {
 
 interface Array<T> {
     where(property: string, value: any): T
+    first(): T
+    last(): T
+    unique(): this
+    collect<y>(func: (item: T) => y[]): y[]
 }