/// <summary>
/// Is called by the managing DataNode when an update is broadcasted.
/// </summary>
/// <param name="updatedPath">Path that received a value update.</param>
public void OnUpdate(Path updatedPath)
{
// Check if this does influence this binding
if (BindingPath.IsSamePath(updatedPath) || BindingPath.IsSubpathOf(updatedPath))
{
ForceUpdate();
}
}
/// <summary>
/// Triggered by managing DataNode if there is an value update.
/// </summary>
/// <param name="updatedPath">Path that has been updated.</param>
public void OnUpdate(Path updatedPath)
{
// Check if this is for the list
if (BindingPath.IsSamePath(updatedPath))
{
// We might have to adjust the amount of children (list size expands / shrinks)
IDataBindingOutputReadonly <IList> db = GetBinding() as IDataBindingOutputReadonly <IList>;
IList boundList = db.GetValue();
int oldCount = updateReceivers.Count;
int newCount = boundList.Count;
int countDifference = oldCount - newCount;
if (countDifference > 0)
{
// We have to remove some of the children
for (int i = 0; i < countDifference; i++)
{
int removeIndex = oldCount - 1 - i;
removeListEntryAt(removeIndex);
}
}
if (countDifference < 0)
{
// We have to add some children
for (int i = 0; i < -countDifference; i++)
{
int addIndex = oldCount + i;
updateReceivers[addIndex] = makeListEntry(addIndex);
}
}
ForceUpdate();
}
else if (updatedPath.IsSubpathOf(BindingPath))
{
Path subPath = updatedPath.GetSlice(BindingPath.PathElements.Count);
PathElement indexPathElement = subPath.PathElements.First();
if (indexPathElement.Type != PathElement.PathElementType.Index)
{
throw new ArgumentException("Error at path '" + updatedPath.ToString() + "'. List has to be accessed by index.");
}
int index = indexPathElement.Index;
updateReceivers[index].OnUpdate(subPath);
}
}
