// Constructor
public MainWindow()
{
// Set the data context of the window to the MainWindowViewModel class
DataContext = View.Model.MainWindow;
// Populate initial data in the user interface's food list
List <string> l = USDA.GetFoodList("", true);
MessageBox.Show(l.Count.ToString());
View.Model.MainWindow.FoodList = USDA.GetFoodList("", true);
// Populate the tree view
List <string> list = USDA.GetFoodGroups();
foreach (var group in list)
{
CategorizedFoodListItem entry = new CategorizedFoodListItem(group, USDA.GetFoodListByGroup(group));
View.Model.MainWindow.CategorizedFoodList.Add(entry);
}
// Load user data
UserData data = UserData.Load();
if (data != null)
{
View.Model.MainWindow.UserData = data;
}
// Load the user interface
InitializeComponent();
// Set name scopes for context menus so they can bind to elements in the XAML tree
NameScope.SetNameScope(DietPlanDataGridContextMenu, NameScope.GetNameScope(this));
}
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;
}
public void Execute(object parameter)
{
if (View.Model.MainWindow.TotalsTabDataStatus.UpdateNeeded == false && View.Model.MainWindow.TotalsTabDataStatus.DataChanged == false)
{
return;
}
// Flag that helps this command fire at the proper time which is set to true initially and set to false as needed
View.Model.MainWindow.TotalsTabDataStatus.IsShowingDataGridTotals = true;
string _parameter = ((string)parameter).ToLower();
switch (_parameter)
{
// Passing one of the following strings causes appropriate data to be displayed in the Totals tab
case "daily":
View.Model.MainWindow.TotalsTabDescription = "Totals for the 'Daily' meal plan";
UpdateTotals("Daily");
break;
case "mondays":
View.Model.MainWindow.TotalsTabDescription = "Totals for the 'Mondays' meal plan";
UpdateTotals("Mondays");
break;
case "tuesdays":
View.Model.MainWindow.TotalsTabDescription = "Totals for the 'Tuesdays' meal plan";
UpdateTotals("Tuesdays");
break;
case "wednesdays":
View.Model.MainWindow.TotalsTabDescription = "Totals for the 'Wednesdays' meal plan";
UpdateTotals("Wednesdays");
break;
case "thursdays":
View.Model.MainWindow.TotalsTabDescription = "Totals for the 'Thursdays' meal plan";
UpdateTotals("Thursdays");
break;
case "fridays":
View.Model.MainWindow.TotalsTabDescription = "Totals for the 'Fridays' meal plan";
UpdateTotals("Fridays");
break;
case "saturdays":
View.Model.MainWindow.TotalsTabDescription = "Totals for the 'Saturdays' meal plan";
UpdateTotals("Saturdays");
break;
case "sundays":
View.Model.MainWindow.TotalsTabDescription = "Totals for the 'Sundays' meal plan";
UpdateTotals("Sundays");
break;
case "weekends":
View.Model.MainWindow.TotalsTabDescription = "Totals for the 'Weekends' meal plan";
UpdateTotals("Weekends");
break;
case "weekdays":
View.Model.MainWindow.TotalsTabDescription = "Totals for the 'Weekdays' meal plan";
UpdateTotals("Weekdays");
break;
default:
// Display details for an individual food item (the case when one of the above keywords is not passed in _parameter
// Update the Totals tab description text
View.Model.MainWindow.TotalsTabDescription = "Totals for: '" + _parameter + "' (100 gram portion)";
// Apply rounding to the data if the option is set and update the data
FoodData d = USDA.GetFoodData(_parameter);
if (Properties.Settings.Default.Rounding)
{
d = FoodData.Round(d, Settings.Default.RoundingNumberOfFractionalDigits);
}
View.Model.MainWindow.FoodData = d;
View.Model.MainWindow.TotalsTabDataStatus.IsShowingDataGridTotals = false;
break;
}
if (View.Model.MainWindow.TotalsTabDataStatus.DataChanged)
{
View.Model.MainWindow.UserData.Save();
}
View.Model.MainWindow.TotalsTabDataStatus.DataChanged = false;
View.Model.MainWindow.TotalsTabDataStatus.UpdateNeeded = false;
}
public void Execute(object parameter)
{
// Delegate to the USDA.GetFoodList method, passing both the search string as the first argument and the search mode based on radio selection
View.Model.MainWindow.FoodList = USDA.GetFoodList(parameter.ToString(), View.Model.MainWindow.RadioButtonStartsWith);
}
