private void CloseCategory(object sender, EventArgs e)
{
if (sender is CategoryVM category)
{
var selectedIndex = OpenCategories.IndexOf(category);
if (category == SelectedCategory)
{
SelectedCategory = selectedIndex > 1
? OpenCategories[selectedIndex - 1]
: OpenCategories.FirstOrDefault();
}
OpenCategories.Remove(category);
}
}
private void OpenCategory(CategoryVM category)
{
if (OpenCategories.Contains(category))
{
SelectedCategory = category;
return;
}
if (category.IsProductsLoaded == false || category.Products.Any() == false)
{
LoadProducts(category);
category.Close += CloseCategory;
}
OpenCategories.Add(category);
SelectedCategory = category;
}