private static void SetTargetCore(DependencyPropertyChangedEventArgs e, DependencyObject d, bool setContext)
{
if (e.NewValue == e.OldValue)
{
return;
}
var target = e.NewValue;
var containerKey = e.NewValue as string;//todo containerKey is null for classes
if (containerKey != null)
{
target = IoC.GetInstance(null, containerKey);
}
#if WINFORMS || WEBGUI
if (setContext && d.Object is IHaveDataContext)
{
Log.Info("Setting DC of {0} to {1}.", d, target);
((IHaveDataContext)d.Object).DataContext = target;
}
#else
if (setContext && d is FrameworkElement)
{
Log.Info("Setting DC of {0} to {1}.", d, target);
((FrameworkElement)d).DataContext = target;
}
#endif
Log.Info("Attaching message handler {0} to {1}.", target, d);
Message.SetHandler(d, target);
}
/// <summary>
/// Invokes the action.
/// </summary>
/// <param name="eventArgs">The parameter to the action. If the action does not require a parameter, the parameter may be set to a null reference.</param>
public void Invoke(object eventArgs)
{
Log.Info("Invoking {0}.", this);
if (context == null)
{
UpdateContext();
}
if (context.Target == null || context.View == null)
{
PrepareContext(context);
if (context.Target == null)
{
var ex = new Exception(string.Format("No target found for method {0}.",
context.Message.MethodName));
Log.Error(ex);
if (!ThrowsExceptions)
{
return;
}
throw ex;
}
if (!UpdateAvailabilityCore())
{
return;
}
}
if (context.Method == null)
{
var ex =
new Exception(string.Format("Method {0} not found on target of type {1}.",
context.Message.MethodName, context.Target.GetType()));
Log.Error(ex);
if (!ThrowsExceptions)
{
return;
}
throw ex;
}
context.EventArgs = eventArgs;
if (EnforceGuardsDuringInvocation && context.CanExecute != null && !context.CanExecute())
{
return;
}
InvokeAction(context);
context.EventArgs = null;
}
private static void SetContentPropertyCore(object targetLocation, object view)
{
try
{
if (view is IHaveDataContext)
{
Log.Info("Setting DC of {0} to {1}.", view, targetLocation);
((IHaveDataContext)view).DataContext = targetLocation;
}
}
catch (Exception e)
{
Log.Error(e);
}
}
void IActivate.Activate()
{
if (IsActive)
{
return;
}
var initialized = false;
if (!IsInitialized)
{
IsInitialized = initialized = true;
OnInitialize();
}
IsActive = true;
Log.Info("Activating {0}.", this);
OnActivate();
Activated(this, new ActivationEventArgs
{
WasInitialized = initialized
});
}
/// <summary>
/// Executes a coroutine.
/// </summary>
/// <param name="coroutine">The coroutine to execute.</param>
/// <param name="context">The context to execute the coroutine within.</param>
/// /// <param name="callback">The completion callback for the coroutine.</param>
public static void BeginExecute(IEnumerator <IResult> coroutine, ActionExecutionContext context = null,
EventHandler <ResultCompletionEventArgs> callback = null)
{
Log.Info("Executing coroutine.");
var enumerator = CreateParentEnumerator(coroutine);
IoC.BuildUp(enumerator);
if (callback != null)
{
ExecuteOnCompleted(enumerator, callback);
}
ExecuteOnCompleted(enumerator, Completed);
enumerator.Execute(context ?? new ActionExecutionContext());
}
