//
// This method
// 1. Ensures that the desired per-instance storage
// for Style/Template exists
// 2. Also allows you to specify initial capacity
//
internal static HybridDictionary EnsureInstanceData(
UncommonField<HybridDictionary[]> dataField,
DependencyObject container,
InstanceStyleData dataType,
int initialSize)
{
Debug.Assert((container is FrameworkElement) || (container is FrameworkContentElement), "Caller has queried with non-framework element. Bad caller, bad!");
Debug.Assert(dataType < InstanceStyleData.ArraySize, "Caller has queried using a value outside the range of the Enum. Bad caller, bad!");
HybridDictionary[] data = dataField.GetValue(container);
if (data == null)
{
data = new HybridDictionary[(int)InstanceStyleData.ArraySize];
dataField.SetValue(container, data);
}
if (data[(int)dataType] == null )
{
if( initialSize < 0 )
{
data[(int)dataType] = new HybridDictionary();
}
else
{
data[(int)dataType] = new HybridDictionary(initialSize);
}
}
return (HybridDictionary)data[(int)dataType];
}
//
// This method
// 1. Ensures that the desired per-instance storage
// for Style/Template exists
//
internal static HybridDictionary EnsureInstanceData(
UncommonField<HybridDictionary[]> dataField,
DependencyObject container,
InstanceStyleData dataType)
{
return EnsureInstanceData(dataField, container, dataType, -1);
}