private void ResetChildListener(INotifyPropertyChanged item)
{
Requires.NotNull(item, "item");
RemoveItem(item);
ChangeListener listener = null;
if (item is INotifyCollectionChanged)
listener = new CollectionChangeListener(item as INotifyCollectionChanged, PropertyName);
else
listener = new ChildChangeListener(item);
listener.PropertyChanged += ListenerPropertyChanged;
m_collectionListeners.Add(item, listener);
}
/// <summary>
/// Resets known (must exist in children collection) child event handlers
/// </summary>
/// <param name="propertyName">Name of known child property</param>
private void ResetChildListener(string propertyName)
{
if (m_childListeners.ContainsKey(propertyName))
{
// Unsubscribe if existing
if (m_childListeners[propertyName] != null)
{
m_childListeners[propertyName].PropertyChanged -= ChildPropertyChanged;
// Should unsubscribe all events
m_childListeners[propertyName].Dispose();
m_childListeners[propertyName] = null;
}
var property = m_type.GetProperty(propertyName);
if (property == null)
{
throw new InvalidOperationException(string.Format("Was unable to get '{0}' property information from Type '{1}'", propertyName, m_type.Name));
}
object newValue = property.GetValue(m_value, null);
// Only recreate if there is a new value
if (newValue != null)
{
if (newValue is INotifyCollectionChanged)
{
m_childListeners[propertyName] = new CollectionChangeListener(newValue as INotifyCollectionChanged, propertyName);
}
else if (newValue is INotifyPropertyChanged)
{
m_childListeners[propertyName] = new ChildChangeListener(newValue as INotifyPropertyChanged, propertyName);
}
if (m_childListeners[propertyName] != null)
{
m_childListeners[propertyName].PropertyChanged += ChildPropertyChanged;
}
}
}
}
/// <summary>
/// Resets known (must exist in children collection) child event handlers
/// </summary>
/// <param name="propertyName">Name of known child property</param>
private void ResetChildListener(string propertyName)
{
if (m_childListeners.ContainsKey(propertyName))
{
// Unsubscribe if existing
if (m_childListeners[propertyName] != null)
{
m_childListeners[propertyName].PropertyChanged -= ChildPropertyChanged;
// Should unsubscribe all events
m_childListeners[propertyName].Dispose();
m_childListeners[propertyName] = null;
}
var property = m_type.GetProperty(propertyName);
if (property == null)
throw new InvalidOperationException(string.Format("Was unable to get '{0}' property information from Type '{1}'", propertyName, m_type.Name));
object newValue = property.GetValue(m_value, null);
// Only recreate if there is a new value
if (newValue != null)
{
if (newValue is INotifyCollectionChanged)
{
m_childListeners[propertyName] = new CollectionChangeListener(newValue as INotifyCollectionChanged, propertyName);
}
else if (newValue is INotifyPropertyChanged)
{
m_childListeners[propertyName] = new ChildChangeListener(newValue as INotifyPropertyChanged, propertyName);
}
if (m_childListeners[propertyName] != null)
m_childListeners[propertyName].PropertyChanged += ChildPropertyChanged;
}
}
}