/// <summary>
/// Removes the <paramref name="item"/> attribute from the list.
/// </summary>
/// <param name="item">The attribute to remove.</param>
/// <returns><c>true</c> if the attribute was contained by the list and removed; otherwise, <c>false</c>.</returns>
public bool Remove(CreateProcessAttribute item)
{
lock (_attributes)
if ((_attributes.TryGetValue(item.GetType(), out var existingItem)) &&
(Object.ReferenceEquals(existingItem, item)))
{
_attributes.Remove(item.GetType());
return(true);
}
return(false);
}
/// <summary>
/// Adds the <paramref name="item"/> attribute to the attribute list. Any previous item of the same type is replaced.
/// </summary>
/// <param name="item">The attribute to add.</param>
public void Add(CreateProcessAttribute item)
{
// this type works more like a dictionary, where the key is the item's type than a collection. When an
// item is added, any existing item of the same type is removed. We do not attempt to combine items, for
// example a InheritHandlesAttribute list will replace, not append, to an existing list.
if (item == null)
{
throw new ArgumentNullException(nameof(item));
}
lock (_attributes)
_attributes[item.GetType()] = item;
}
/// <summary>
/// Determines if the <paramref name="item"/> attribute is part of the list.
/// </summary>
/// <param name="item">The attribute to locate.</param>
/// <returns><c>true</c> if the attribute is contained by the list; otherwise, <c>false</c>.</returns>
public bool Contains(CreateProcessAttribute item)
{
if (item == null)
{
return(false);
}
lock (_attributes)
if ((_attributes.TryGetValue(item.GetType(), out var existingItem)) &&
(Object.ReferenceEquals(existingItem, item)))
{
return(true);
}
return(false);
}
