public OrderItemsViewModel(IOrderItemService orderItemService, IOrderService orderService, ICommonServices commonServices) : base(commonServices)
{
OrderItemService = orderItemService;
OrderItemList = new OrderItemListViewModel(OrderItemService, commonServices);
OrderItemDetails = new OrderItemDetailsViewModel(OrderItemService, commonServices);
}
/*
* Handle external messages
****************************************************************/
private async void OnDetailsMessage(OrderItemDetailsViewModel sender, string message, OrderItemModel changed)
{
var current = Item;
if (current != null)
{
if (changed != null && changed.OrderID == current?.OrderID && changed.OrderLine == current?.OrderLine)
{
switch (message)
{
case "ItemChanged":
await ContextService.RunAsync(async() =>
{
try
{
var item = await OrderItemService.GetOrderItemAsync(current.OrderID, current.OrderLine);
item = item ?? new OrderItemModel {
OrderID = OrderID, OrderLine = ViewModelArgs.OrderLine, IsEmpty = true
};
current.Merge(item);
current.NotifyChanges();
NotifyPropertyChanged(nameof(Title));
if (IsEditMode)
{
StatusMessage("WARNING: This orderItem has been modified externally");
}
}
catch (Exception ex)
{
LogException("OrderItem", "Handle Changes", ex);
}
});
break;
case "ItemDeleted":
await OnItemDeletedExternally();
break;
}
}
}
}