C# ComponentModel.Activity类代码示例

 internal static void GetAllMembers(Activity activity, IList<TrackingDataItem> items, TrackingAnnotationCollection annotations)
 {
     Type type = activity.GetType();
     foreach (FieldInfo info in type.GetFields(BindingFlags.GetField | BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Static | BindingFlags.Instance))
     {
         if (!IsInternalVariable(info.Name))
         {
             TrackingDataItem item = new TrackingDataItem {
                 FieldName = info.Name,
                 Data = GetRuntimeValue(info.GetValue(activity), activity)
             };
             foreach (string str in annotations)
             {
                 item.Annotations.Add(str);
             }
             items.Add(item);
         }
     }
     foreach (PropertyInfo info2 in type.GetProperties(BindingFlags.GetProperty | BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Static | BindingFlags.Instance))
     {
         if (!IsInternalVariable(info2.Name) && (info2.GetIndexParameters().Length <= 0))
         {
             TrackingDataItem item2 = new TrackingDataItem {
                 FieldName = info2.Name,
                 Data = GetRuntimeValue(info2.GetValue(activity, null), activity)
             };
             foreach (string str2 in annotations)
             {
                 item2.Annotations.Add(str2);
             }
             items.Add(item2);
         }
     }
 }

 internal static void InitializeCorrelationTokenCollection(Activity activity, CorrelationToken correlator)
 {
     if ((correlator != null) && !string.IsNullOrEmpty(correlator.OwnerActivityName))
     {
         string ownerActivityName = correlator.OwnerActivityName;
         Activity activityByName = activity.GetActivityByName(ownerActivityName);
         if (activityByName == null)
         {
             activityByName = Helpers.ParseActivityForBind(activity, ownerActivityName);
         }
         if (activityByName == null)
         {
             throw new ArgumentException("ownerActivity");
         }
         CorrelationTokenCollection tokens = activityByName.GetValue(CorrelationTokenCollection.CorrelationTokenCollectionProperty) as CorrelationTokenCollection;
         if (tokens == null)
         {
             tokens = new CorrelationTokenCollection();
             activityByName.SetValue(CorrelationTokenCollection.CorrelationTokenCollectionProperty, tokens);
         }
         if (!tokens.Contains(correlator.Name))
         {
             tokens.Add(correlator);
         }
     }
 }

 internal WalkerEventArgs(Activity currentActivity, object currentValue, PropertyInfo currentProperty, object currentPropertyOwner)
     : this(currentActivity)
 {
     this.currentPropertyOwner = currentPropertyOwner;
     this.currentProperty = currentProperty;
     this.currentValue = currentValue;
 }

        protected override void Initialize(Activity activity)
        {
            base.Initialize(activity);

            HelpText = DR.GetString(DR.SequentialWorkflowHelpText);
            Header.Text = DR.GetString(DR.StartSequentialWorkflow);
        }

 protected override bool ApplyTo(Activity rootActivity)
 {
     if (rootActivity == null)
     {
         return false;
     }
     RuleDefinitions definitions = rootActivity.GetValue(RuleDefinitions.RuleDefinitionsProperty) as RuleDefinitions;
     if (definitions == null)
     {
         definitions = new RuleDefinitions();
         rootActivity.SetValue(RuleDefinitions.RuleDefinitionsProperty, definitions);
     }
     bool flag = false;
     if (definitions.Conditions.RuntimeMode)
     {
         definitions.Conditions.RuntimeMode = false;
         flag = true;
     }
     try
     {
         definitions.Conditions.Add(this.ConditionDefinition);
     }
     finally
     {
         if (flag)
         {
             definitions.Conditions.RuntimeMode = true;
         }
     }
     return true;
 }

 protected override bool ApplyTo(Activity rootActivity)
 {
     if (rootActivity == null)
     {
         return false;
     }
     RuleDefinitions definitions = rootActivity.GetValue(RuleDefinitions.RuleDefinitionsProperty) as RuleDefinitions;
     if ((definitions == null) || (definitions.RuleSets == null))
     {
         return false;
     }
     if (definitions.RuleSets[this.RuleSetName] == null)
     {
         return false;
     }
     bool flag = false;
     if (definitions.Conditions.RuntimeMode)
     {
         definitions.Conditions.RuntimeMode = false;
         flag = true;
     }
     try
     {
         definitions.RuleSets.Remove(this.RuleSetName);
         definitions.RuleSets.Add(this.updated);
     }
     finally
     {
         if (flag)
         {
             definitions.RuleSets.RuntimeMode = true;
         }
     }
     return true;
 }

        protected static TypeProvider CreateTypeProvider(Activity rootActivity)
        {
            TypeProvider typeProvider = new TypeProvider(null);

            Type companionType = rootActivity.GetType();
            typeProvider.SetLocalAssembly(companionType.Assembly);
            typeProvider.AddAssembly(companionType.Assembly);

            foreach (AssemblyName assemblyName in companionType.Assembly.GetReferencedAssemblies())
            {
                Assembly referencedAssembly = null;
                try
                {
                    referencedAssembly = Assembly.Load(assemblyName);
                    if (referencedAssembly != null)
                    {
                        typeProvider.AddAssembly(referencedAssembly);
                    }
                }
                catch (Exception e)
                {
                    if (Fx.IsFatal(e))
                    {
                        throw;
                    }
                }

                if (referencedAssembly == null && assemblyName.CodeBase != null)
                {
                    typeProvider.AddAssemblyReference(assemblyName.CodeBase);
                }
            }

            return typeProvider;
        }

        // Save the workflow instance state at the point of persistence with option of locking the instance state if it is shared
        // across multiple runtimes or multiple phase instance updates
        protected override void SaveWorkflowInstanceState(Activity rootActivity, bool unlock)
        {
            // Save the workflow
            Guid contextGuid = (Guid)rootActivity.GetValue(Activity.ActivityContextGuidProperty);
            Console.WriteLine("Saving instance: {0}\n", contextGuid);
            SerializeToFile(
                WorkflowPersistenceService.GetDefaultSerializedForm(rootActivity), contextGuid);

            // See when the next timer (Delay activity) for this workflow will expire
            TimerEventSubscriptionCollection timers = (TimerEventSubscriptionCollection)rootActivity.GetValue(TimerEventSubscriptionCollection.TimerCollectionProperty);
            TimerEventSubscription subscription = timers.Peek();
            if (subscription != null)
            {
                // Set a system timer to automatically reload this workflow when its next timer expires
                TimerCallback callback = new TimerCallback(ReloadWorkflow);
                TimeSpan timeDifference = subscription.ExpiresAt - DateTime.UtcNow;
                // check to make sure timeDifference is in legal range
                if (timeDifference > FilePersistenceService.MaxInterval)
                {
                    timeDifference = FilePersistenceService.MaxInterval;
                }
                else if (timeDifference < TimeSpan.Zero)
                {
                    timeDifference = TimeSpan.Zero;
                }
                this.instanceTimers.Add(contextGuid, new System.Threading.Timer(
                    callback,
                    subscription.WorkflowInstanceId,
                    timeDifference,
                    new TimeSpan(-1)));
            }
        }

        public RuleSetDialog(Activity activity, RuleSet ruleSet)
        {
            if (activity == null)
                throw (new ArgumentNullException("activity"));

            InitializeDialog(ruleSet);

            ITypeProvider typeProvider;
            this.serviceProvider = activity.Site;
            if (this.serviceProvider != null)
            {
                typeProvider = (ITypeProvider)this.serviceProvider.GetService(typeof(ITypeProvider));
                if (typeProvider == null)
                {
                    string message = string.Format(CultureInfo.CurrentCulture, Messages.MissingService, typeof(ITypeProvider).FullName);
                    throw new InvalidOperationException(message);
                }

                WorkflowDesignerLoader loader = this.serviceProvider.GetService(typeof(WorkflowDesignerLoader)) as WorkflowDesignerLoader;
                if (loader != null)
                    loader.Flush();

            }
            else
            {
                // no service provider, so make a TypeProvider that has all loaded Assemblies
                TypeProvider newProvider = new TypeProvider(null);
                foreach (Assembly a in AppDomain.CurrentDomain.GetAssemblies())
                    newProvider.AddAssembly(a);
                typeProvider = newProvider;
            }

            RuleValidation validation = new RuleValidation(activity, typeProvider, false);
            this.ruleParser = new Parser(validation);
        }

 internal WorkflowCompletedEventArgs(WorkflowInstance instance, Activity workflowDefinition)
     : base(instance)
 {
     this._outputParameters = new Dictionary<String, Object>();
     this._originalWorkflowDefinition = workflowDefinition;
     this._workflowDefinition = null;
 }

 protected internal override bool ApplyTo(Activity rootActivity)
 {
     if (rootActivity == null)
     {
         throw new ArgumentNullException("rootActivity");
     }
     if (!(rootActivity is CompositeActivity))
     {
         throw new ArgumentException(SR.GetString("Error_RootActivityTypeInvalid"), "rootActivity");
     }
     CompositeActivity activity = rootActivity.TraverseDottedPathFromRoot(base.OwnerActivityDottedPath) as CompositeActivity;
     if (activity == null)
     {
         return false;
     }
     if (this.removedActivityIndex >= activity.Activities.Count)
     {
         return false;
     }
     activity.DynamicUpdateMode = true;
     try
     {
         this.originalRemovedActivity = activity.Activities[this.removedActivityIndex];
         activity.Activities.RemoveAt(this.removedActivityIndex);
     }
     finally
     {
         activity.DynamicUpdateMode = false;
     }
     return true;
 }

		// Methods
		public override bool Evaluate (Activity activity, IServiceProvider provider)
		{

			Activity parent = activity;
			RuleDefinitions definitions = null;

			while (parent != null) {

				definitions = (RuleDefinitions) parent.GetValue (RuleDefinitions.RuleDefinitionsProperty);

				if (definitions != null)
					break;

				parent = parent.Parent;
			}

			if (definitions == null) {
				Console.WriteLine ("No definition");
				return false;
			}

			//Console.WriteLine ("Definition {0} at {1}", definitions, parent);
			RuleValidation validation = new RuleValidation (activity.GetType (), null);
			RuleExecution execution = new RuleExecution (validation, parent);
			RuleCondition condition = definitions.Conditions [ConditionName];
			//Console.WriteLine ("Condition {0}", condition);
			return condition.Evaluate (execution);
		}

 internal static void FilterDependencyProperties(IServiceProvider serviceProvider, Activity activity)
 {
     IExtenderListService service = serviceProvider.GetService(typeof(IExtenderListService)) as IExtenderListService;
     if (service != null)
     {
         Dictionary<string, DependencyProperty> dictionary = new Dictionary<string, DependencyProperty>();
         foreach (DependencyProperty property in activity.MetaDependencyProperties)
         {
             dictionary.Add(property.Name, property);
         }
         List<string> list = new List<string>();
         foreach (IExtenderProvider provider in service.GetExtenderProviders())
         {
             if (!provider.CanExtend(activity))
             {
                 ProvidePropertyAttribute[] customAttributes = provider.GetType().GetCustomAttributes(typeof(ProvidePropertyAttribute), true) as ProvidePropertyAttribute[];
                 foreach (ProvidePropertyAttribute attribute in customAttributes)
                 {
                     list.Add(attribute.PropertyName);
                 }
             }
         }
         foreach (string str in list)
         {
             if (dictionary.ContainsKey(str))
             {
                 activity.RemoveProperty(dictionary[str]);
             }
         }
     }
 }

 public void AddActivityToDesigner(Activity activity)
 {
     if (activity == null)
     {
         throw new ArgumentNullException("activity");
     }
     IDesignerHost service = base.GetService(typeof(IDesignerHost)) as IDesignerHost;
     if (service == null)
     {
         throw new InvalidOperationException(SR.GetString("General_MissingService", new object[] { typeof(IDesignerHost).FullName }));
     }
     if ((activity.Parent == null) && (service.RootComponent == null))
     {
         string str = activity.GetValue(WorkflowMarkupSerializer.XClassProperty) as string;
         string name = !string.IsNullOrEmpty(str) ? Helpers.GetClassName(str) : Helpers.GetClassName(activity.GetType().FullName);
         service.Container.Add(activity, name);
         this.AddTargetFrameworkProvider(activity);
     }
     else
     {
         service.Container.Add(activity, activity.QualifiedName);
         this.AddTargetFrameworkProvider(activity);
     }
     if (activity is CompositeActivity)
     {
         foreach (Activity activity2 in Helpers.GetNestedActivities(activity as CompositeActivity))
         {
             service.Container.Add(activity2, activity2.QualifiedName);
             this.AddTargetFrameworkProvider(activity2);
         }
     }
 }

 private void ApplyDynamicUpdateMode(Activity seedActivity)
 {
     Queue<Activity> queue = new Queue<Activity>();
     queue.Enqueue(seedActivity);
     while (queue.Count > 0)
     {
         Activity activity = queue.Dequeue();
         activity.Readonly = true;
         activity.DynamicUpdateMode = true;
         foreach (DependencyProperty property in activity.MetaDependencyProperties)
         {
             if (activity.IsBindingSet(property))
             {
                 ActivityBind binding = activity.GetBinding(property);
                 if (binding != null)
                 {
                     binding.DynamicUpdateMode = true;
                 }
             }
         }
         if (activity is CompositeActivity)
         {
             CompositeActivity activity2 = activity as CompositeActivity;
             activity2.Activities.ListChanged += new EventHandler<ActivityCollectionChangeEventArgs>(this.OnActivityListChanged);
             foreach (Activity activity3 in ((CompositeActivity) activity).Activities)
             {
                 queue.Enqueue(activity3);
             }
         }
     }
 }