private static void CopyCategoryFrom(GridEntryCollection <CategoryItem> oldValue, IEnumerable <CategoryItem> newValue)
{
foreach (var category in newValue)
{
var prev = oldValue[category.Name];
if (prev == null)
{
continue;
}
category.IsExpanded = prev.IsExpanded;
}
}
internal void DoReload()
{
if (SelectedObject == null)
{
Categories = new GridEntryCollection <CategoryItem>();
Properties = new GridEntryCollection <PropertyItem>();
}
else
{
// Collect BrowsableCategoryAttribute items
var categoryAttributes = PropertyGridUtils.GetAttributes <BrowsableCategoryAttribute>(SelectedObject);
browsableCategories = new List <BrowsableCategoryAttribute>(categoryAttributes);
// Collect BrowsablePropertyAttribute items
var propertyAttributes = PropertyGridUtils.GetAttributes <BrowsablePropertyAttribute>(SelectedObject);
browsableProperties = new List <BrowsablePropertyAttribute>(propertyAttributes);
// Collect categories and properties
var properties = CollectProperties(SelectedObjects);
// TODO: This needs more elegant implementation
var categories = new GridEntryCollection <CategoryItem>(CollectCategories(properties));
if (Categories != null && Categories.Count > 0)
{
CopyCategoryFrom(Categories, categories);
}
// Fetch and apply category orders
var categoryOrders = PropertyGridUtils.GetAttributes <CategoryOrderAttribute>(SelectedObject);
foreach (var orderAttribute in categoryOrders)
{
var category = categories[orderAttribute.Category];
// don't apply Order if it was applied before (Order equals zero or more),
// so the first discovered Order value for the same category wins
if (category != null && category.Order < 0)
{
category.Order = orderAttribute.Order;
}
}
Categories = categories; //new CategoryCollection(CollectCategories(properties));
Properties = new GridEntryCollection <PropertyItem>(properties);
}
}
