private ObservableCollection<ScreenCategoryButton> CreateCategoryButtons(ScreenMenu screenMenu)
{
if (screenMenu != null)
{
if (MenuItems != null) MenuItems.Clear();
_currentScreenMenu = screenMenu;
var result = new ObservableCollection<ScreenCategoryButton>();
foreach (var category in screenMenu.Categories.OrderBy(x => x.Order).Where(x => !x.MostUsedItemsCategory))
{
var sButton = new ScreenCategoryButton(category, CategoryCommand);
result.Add(sButton);
}
if (result.Count > 0)
{
var c = result.First();
if (_selectedCategory != null)
c = result.SingleOrDefault(x => x.Category.Name.ToLower() == _selectedCategory.Name.ToLower());
if (c == null && result.Count > 0) c = result.ElementAt(0);
if (c != null) OnCategoryCommandExecute(c.Category);
}
return result;
}
if (MenuItems != null) MenuItems.Clear();
if (Categories != null) Categories.Clear();
_currentScreenMenu = null;
return Categories;
}
