/// <summary>
/// Construct a ValidationContext for a given object instance, an optional <paramref name="serviceProvider"/>, and an optional
/// property bag of <paramref name="items"/>.
/// </summary>
/// <param name="instance">The object instance being validated. It cannot be null.</param>
/// <param name="serviceProvider">
/// Optional <see cref="IServiceProvider"/> to use when <see cref="GetService"/> is called.
/// If it is null, <see cref="GetService"/> will always return null.
/// </param>
/// <param name="items">Optional set of key/value pairs to make available to consumers via <see cref="Items"/>.
/// If null, an empty dictionary will be created. If not null, the set of key/value pairs will be copied into a
/// new dictionary, preventing consumers from modifying the original dictionary.
/// </param>
/// <exception cref="ArgumentNullException">When <paramref name="instance"/> is <c>null</c></exception>
#else
/// <summary>
/// Construct a ValidationContext for a given object instance, an optional <paramref name="serviceProvider"/>, and an optional
/// property bag of <paramref name="items"/>.
/// </summary>
/// <param name="instance">The object instance being validated. It cannot be null.</param>
/// <param name="serviceProvider">
/// Optional <see cref="IServiceProvider"/> to use when <see cref="GetService"/> is called.
/// <para>
/// If the <paramref name="serviceProvider"/> specified implements <see cref="Design.IServiceContainer"/>,
/// then it will be used as the <see cref="ServiceContainer"/> but its services can still be retrieved
/// through <see cref="GetService"/> as well.
/// </para>
/// </param>
/// <param name="items">Optional set of key/value pairs to make available to consumers via <see cref="Items"/>.
/// If null, an empty dictionary will be created. If not null, the set of key/value pairs will be copied into a
/// new dictionary, preventing consumers from modifying the original dictionary.
/// </param>
/// <exception cref="ArgumentNullException">When <paramref name="instance"/> is <c>null</c></exception>
#endif
public ValidationContext(object instance, IServiceProvider serviceProvider, IDictionary <object, object> items)
{
if (instance == null)
{
throw new ArgumentNullException("instance");
}
this._serviceProvider = serviceProvider;
#if !SILVERLIGHT
Design.IServiceContainer container = serviceProvider as Design.IServiceContainer;
if (container != null)
{
this._serviceContainer = new ValidationContextServiceContainer(container);
}
else
{
this._serviceContainer = new ValidationContextServiceContainer();
}
#endif
if (items != null)
{
this._items = new Dictionary <object, object>(items);
}
else
{
this._items = new Dictionary <object, object>();
}
this._objectInstance = instance;
}
/// <summary>
/// Contstructs a new service container that has a parent container, making this container
/// a wrapper around the parent container. Calls to <c>AddService</c> and <c>RemoveService</c>
/// will promote to the parent container by default, unless <paramref name="promote"/> is
/// specified as <c>false</c> on those calls.
/// </summary>
/// <param name="parentContainer">The parent container to wrap into this container.</param>
internal ValidationContextServiceContainer(Design.IServiceContainer parentContainer) {
this._parentContainer = parentContainer;
}
/// <summary>
/// Contstructs a new service container that has a parent container, making this container
/// a wrapper around the parent container. Calls to <c>AddService</c> and <c>RemoveService</c>
/// will promote to the parent container by default, unless <paramref name="promote"/> is
/// specified as <c>false</c> on those calls.
/// </summary>
/// <param name="parentContainer">The parent container to wrap into this container.</param>
internal ValidationContextServiceContainer(Design.IServiceContainer parentContainer)
{
this._parentContainer = parentContainer;
}
