private void UpdateTotals(string scope)
{
FoodData totals = new FoodData();
if (View.Model.MainWindow.UserData.PlannedDiet == null)
{
return;
}
foreach (DietPlanEntry entry in View.Model.MainWindow.UserData.PlannedDiet)
{
// Restrict results to the specified scope
if (entry.Scope != scope)
{
continue;
}
FoodData data = USDA.GetFoodData(entry.FoodName);
// Adjust the nutrient values to reflect the quantity and unit
double quantity = Convert.ToDouble(entry.Quantity);
string NDB_No = USDA.GetNDBNumber(entry.FoodName);
double factor = USDA.GetNutrientConversionFactor(NDB_No, entry.Unit, quantity);
data *= factor;
// Add the adjusted data to the total
totals += data;
}
// Apply rounding to the data if the option is set and update the data
if (Settings.Default.Rounding == true)
{
totals = FoodData.Round(totals, Settings.Default.RoundingNumberOfFractionalDigits);
}
View.Model.MainWindow.FoodData = totals;
}
// The user has completed a drop over the (diet plan) datagrid control with the source as either the listbox or the treeview
private void DataGrid_Drop(object sender, DragEventArgs e)
{
DataObject item = (((DragEventArgs)e).Data) as DataObject;
string food = item.GetData(DataFormats.StringFormat) as string;
DataGrid grid = (DataGrid)e.Source;
// Set the units to display in the combobox for the new row in the datagrid
List <string> units = new List <string>();
units.Add("Gram");
List <string> foodunits = USDA.GetUnits(USDA.GetNDBNumber(food));
foreach (string unit in foodunits)
{
units.Add(unit.FirstLetterToUpper());
}
foodunits = null;
// Create a new DietEntry object and set values
DietPlanEntry d = new DietPlanEntry();
d.FoodName = food;
d.Units = units;
d.Quantity = "100";
d.Unit = "gram";
d.Meal = "Breakfast";
d.Scope = ((ListBoxItem)DietPlanScopeListBox.SelectedItem).Content.ToString();
// Add the new DietEntry object to the diet plan tab
View.Model.MainWindow.UserData.PlannedDiet.Add(d);
// Save user data
View.Model.MainWindow.UserData.Save();
e.Handled = true;
}
