/// <summary>
/// Find the given category in the tree and return the 'path' of parent objects that get us to that category.
/// </summary>
private bool FindTreeItemByCategory(ItemCollection itemCollection, Category value, List <object> path)
{
foreach (object item in itemCollection)
{
CategoryGroup g = item as CategoryGroup;
if (g != null)
{
path.Add(g);
if (FindTreeItemByCategory(g.Subcategories, value, path))
{
return(true);
}
path.Remove(g);
}
else
{
Category c = item as Category;
path.Add(c);
if (c == value)
{
return(true);
}
if (c.Subcategories != null && c.Subcategories.Count > 0)
{
if (FindTreeItemByCategory(c.Subcategories, value, path))
{
return(true);
}
}
path.Remove(c);
}
}
return(false);
}
void OnSelectedItemChanged(object sender, RoutedPropertyChangedEventArgs <object> e)
{
Category dataBoundItemTreeview = (this.treeView.SelectedItem as Category);
if (dataBoundItemTreeview != null)
{
if (SelectionChanged != null)
{
SelectionChanged(this, EventArgs.Empty);
}
}
CategoryGroup group = (this.treeView.SelectedItem as CategoryGroup);
if (group != null)
{
if (GroupSelectionChanged != null)
{
GroupSelectionChanged(this, EventArgs.Empty);
}
}
}
void UpdateRoots()
{
if (insideUpdateRoots)
{
return;
}
insideUpdateRoots = true;
try
{
bool hasRoots = this.treeView.ItemsSource != null;
ObservableCollection <CategoryGroup> groups = new ObservableCollection <CategoryGroup>();
List <Category> roots;
if (string.IsNullOrWhiteSpace(filterCategory))
{
// No filter return the top root items as is
roots = this.money.Categories.GetRootCategories();
}
else
{
roots = GetDeepFilteredRootCategories();
}
//--------------------------------------------------------------
// Create the 4 top holding Groups
//
// 0 - INCOME
// 1 - EXPENSE
// 2 - NONE
// 3 - TOTAL
//
decimal balance = 0;
foreach (CategoryType t in new CategoryType[] { CategoryType.Income, CategoryType.Expense, CategoryType.Investments, CategoryType.None })
{
ObservableCollection <Category> list = new ObservableCollection <Category>();
foreach (Category c in roots)
{
if (c == this.MyMoney.Categories.Split)
{
continue;
}
if (c.Type == t || (c.Type == CategoryType.Savings && t == CategoryType.Income))
{
balance += c.Balance;
list.Add(c);
}
}
CategoryGroup g = new CategoryGroup()
{
Name = t.ToString(),
Subcategories = list
};
groups.Add(g);
}
total = new CategoryBalance()
{
Name = "Total", Balance = balance
};
groups.Add(total);
if (!hasRoots)
{
this.treeView.ItemsSource = groups;
}
else
{
// merge!
ObservableCollection <CategoryGroup> oldGroups = this.treeView.ItemsSource as ObservableCollection <CategoryGroup>;
Debug.Assert(oldGroups.Count == groups.Count);
for (int i = 0; i < groups.Count; i++)
{
CategoryGroup a = groups[i];
CategoryGroup b = oldGroups[i];
if (a is CategoryBalance)
{
CategoryBalance ab = (CategoryBalance)a;
CategoryBalance bb = (CategoryBalance)b;
bb.Balance = ab.Balance;
}
else
{
SyncCollections(a.Subcategories, b.Subcategories);
}
}
}
}
finally
{
insideUpdateRoots = false;
}
}
