/// <summary>
/// Raises the InstanceRelationChanged event.
/// </summary>
/// <param name="relation">The <see cref="InstanceDescriptorInstanceRelation"/> relation.</param>
/// <param name="changeType">The type of change occured.</param>
/// <exception cref="ArgumentNullException">The value of '<paramref name="relation"/>' cannot be null.</exception>
private void OnInstanceRelationChanged([NotNull] InstanceDescriptorInstanceRelation relation,
InstanceRelationChangeType changeType)
{
if (relation == null)
{
throw new ArgumentNullException(nameof(relation));
}
var handler = this.instanceRelationChanged;
handler?.Invoke(this, new InstanceRelationChangedEventArgs(relation.InstanceDescriptor, relation.Instance, changeType));
}
/// <summary>
/// Initializes a new instance of the <see cref="InstanceRelationChangedEventArgs"/> class.
/// </summary>
/// <param name="instanceDescriptor">The associated <see cref="InstanceDescriptor"/>.</param>
/// <param name="instance">The associated instance.</param>
/// <param name="changeType">The type of changed occured.</param>
/// <exception cref="ArgumentNullException">The value of '<paramref name="instanceDescriptor"/>' and '<paramref name="instance"/>' cannot be null.</exception>
public InstanceRelationChangedEventArgs([NotNull] InstanceDescriptor instanceDescriptor,
[NotNull] Object instance, InstanceRelationChangeType changeType)
{
if (instanceDescriptor == null)
{
throw new ArgumentNullException(nameof(instanceDescriptor));
}
if (instance == null)
{
throw new ArgumentNullException(nameof(instance));
}
this.InstanceDescriptor = instanceDescriptor;
this.Instance = instance;
this.ChangeType = changeType;
}
