/// <summary>
/// Creates and attaches behaviors specified on the element declaratively.
/// </summary>
/// <param name="element">The element whose behaviors should be created and attached.</param>
private void AttachBehaviors(Element element)
{
string[] behaviorNames = ((string)element.GetAttribute(Application.BehaviorsAttribute)).Split(",");
int behaviorCount = behaviorNames.Length;
for (int i = 0; i < behaviorCount; i++)
{
string name = behaviorNames[i].Trim();
BehaviorRegistration registration = _registeredBehaviors[name];
Debug.Assert(registration != null, "Unknown behavior '" + name + "'");
if (registration != null)
{
Dictionary <string, object> options = OptionsParser.GetOptions(element, name);
// Use the Application's IoC capabilities to create behaviors.
// This allows satisfying dependencies behaviors have to other services,
// and also allows behaviors to provide or register services into the container.
Behavior behavior = (Behavior)GetObject(registration.BehaviorType);
behavior.Initialize(element, options);
if (registration.ServiceType != null)
{
// Special-case the common case where a behavior represents a single
// service type, and auto-register it.
// In the case where a behavior is registering multiple service types
// (not so common), it can do so manually in its Initialize method.
RegisterObject(registration.ServiceType, behavior);
}
}
}
}
/// <summary>
/// Registers a behavior so it can be used declaratively in markup.
/// </summary>
/// <param name="name">The unique name of the behavior.</param>
/// <param name="behaviorType">The type of the behavior.</param>
/// <param name="serviceType">An option service type associated with the behavior for auto-registration with the application container.</param>
public void RegisterBehavior(string name, Type behaviorType, Type serviceType)
{
Debug.Assert(String.IsNullOrEmpty(name) == false);
Debug.Assert(behaviorType != null);
Debug.Assert(typeof(Behavior).IsAssignableFrom(behaviorType));
Debug.Assert(_registeredBehaviors.ContainsKey(name) == false, "A behavior with name '" + name + "' was already registered.");
BehaviorRegistration registration = new BehaviorRegistration();
registration.BehaviorType = behaviorType;
registration.ServiceType = serviceType;
_registeredBehaviors[name] = registration;
Type.SetField(behaviorType, Application.BehaviorNameKey, name);
}
