Example #1
0
        void UpdateContext()
        {
            if (context != null)
            {
                context.Dispose();
            }

            context = new ActionExecutionContext {
                Message = this,
                Source  = AssociatedObject
            };

            PrepareContext(context);
            UpdateAvailabilityCore();
        }
Example #2
0
        /// <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)
            {
                enumerator.Completed += callback;
            }
            enumerator.Completed += Completed;

            enumerator.Execute(context ?? new ActionExecutionContext());
        }
Example #3
0
        /// <summary>
        /// Try to find a candidate for guard function, having:
        ///		- a name in the form "CanXXX"
        ///		- no generic parameters
        ///		- a bool return type
        ///		- no parameters or a set of parameters corresponding to the action method
        /// </summary>
        /// <param name="context">The execution context</param>
        /// <returns>A MethodInfo, if found; null otherwise</returns>
        static MethodInfo TryFindGuardMethod(ActionExecutionContext context)
        {
            var guardName  = "Can" + context.Method.Name;
            var targetType = context.Target.GetType();
            var guard      = targetType.GetMethod(guardName);

            if (guard == null)
            {
                return(null);
            }
            if (guard.ContainsGenericParameters)
            {
                return(null);
            }
            if (!typeof(bool).Equals(guard.ReturnType))
            {
                return(null);
            }

            var guardPars  = guard.GetParameters();
            var actionPars = context.Method.GetParameters();

            if (guardPars.Length == 0)
            {
                return(guard);
            }
            if (guardPars.Length != actionPars.Length)
            {
                return(null);
            }

            var comparisons = guardPars.Zip(
                context.Method.GetParameters(),
                (x, y) => x.ParameterType.Equals(y.ParameterType)
                );

            if (comparisons.Any(x => !x))
            {
                return(null);
            }

            return(guard);
        }
Example #4
0
        ///<summary>
        ///  Uses the action pipeline to invoke the method.
        ///</summary>
        ///<param name="target"> The object instance to invoke the method on. </param>
        ///<param name="methodName"> The name of the method to invoke. </param>
        ///<param name="view"> The view. </param>
        ///<param name="source"> The source of the invocation. </param>
        ///<param name="eventArgs"> The event args. </param>
        ///<param name="parameters"> The method parameters. </param>
        public static void Invoke(object target, string methodName, DependencyObject view = null, FrameworkElement source = null, object eventArgs = null, object[] parameters = null)
        {
            var context = new ActionExecutionContext {
                Target  = target,
                Method  = target.GetType().GetMethod(methodName),
                Message = new ActionMessage {
                    MethodName = methodName
                },
                View      = view,
                Source    = source,
                EventArgs = eventArgs
            };

            if (parameters != null)
            {
                parameters.Apply(x => context.Message.Parameters.Add(x as Parameter ?? new Parameter {
                    Value = x
                }));
            }

            ActionMessage.InvokeAction(context);
        }
Example #5
0
        /// <summary>
        /// Determines the parameters that a method should be invoked with.
        /// </summary>
        /// <param name="context">The action execution context.</param>
        /// <param name="requiredParameters">The parameters required to complete the invocation.</param>
        /// <returns>The actual parameter values.</returns>
        public static object[] DetermineParameters(ActionExecutionContext context, ParameterInfo[] requiredParameters)
        {
            var providedValues = context.Message.Parameters.Select(x => x.Value).ToArray();
            var finalValues    = new object[requiredParameters.Length];

            for (int i = 0; i < requiredParameters.Length; i++)
            {
                var parameterType     = requiredParameters[i].ParameterType;
                var parameterValue    = providedValues[i];
                var parameterAsString = parameterValue as string;

                if (parameterAsString != null)
                {
                    finalValues[i] = CoerceValue(parameterType, EvaluateParameter(parameterAsString, parameterType, context), context);
                }
                else
                {
                    finalValues[i] = CoerceValue(parameterType, parameterValue, context);
                }
            }

            return(finalValues);
        }
Example #6
0
 /// <summary>
 ///   Executes the result using the specified context.
 /// </summary>
 /// <param name = "context">The context.</param>
 public void Execute(ActionExecutionContext context)
 {
     this.context = context;
     ChildCompleted(null, new ResultCompletionEventArgs());
 }