void PieChart_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
DependencyObject d = e.OriginalSource as DependencyObject;
if (e == null)
{
return;
}
while (d != null)
{
FrameworkElement f = d as FrameworkElement;
if (f != null && f.DataContext != null)
{
CategoryData data = f.DataContext as CategoryData;
if (data != null)
{
Selection = data;
return;
}
}
d = VisualTreeHelper.GetParent(d);
}
}
bool Tally(Transaction t, Category c, decimal total, bool expense)
{
// ALERT: this method has to be kept in sync with WillTally
if (c == null)
{
c = unassigned;
}
switch (this.CategoryType)
{
case CategoryType.None:
if (c.Type != Data.CategoryType.None && c.Type != Data.CategoryType.Transfer)
{
return(false);
}
break;
case CategoryType.Income:
if (c.Type != Data.CategoryType.Income && c.Type != Data.CategoryType.Savings)
{
return(false);
}
break;
case CategoryType.Expense:
if (c.Type != Data.CategoryType.Expense)
{
return(false);
}
break;
default:
System.Diagnostics.Debug.Assert(false, "Unexpected category type here, need to change this code if you want a chart of these");
return(false);
}
if (filter == null)
{
c = c.Root;
}
else
{
while (c != null && c != filter && c.ParentCategory != filter)
{
// then we are looking at a "grand child category", so need to roll this up to the child category
c = c.ParentCategory;
}
if (c == null)
{
return(false);
}
}
CategoryData cd;
if (!map.TryGetValue(c, out cd))
{
map[c] = cd = new CategoryData(c);
if (string.IsNullOrWhiteSpace(c.InheritedColor))
{
c.Root.Color = cd.Color.ToString();
}
}
cd.Transactions.Add(t);
cd.Total += (double)total;
return(true);
}