public override bool IsVisible(LocationReference locationReference)
{
if (locationReference == null)
{
throw FxTrace.Exception.ArgumentNull("locationReference");
}
LocationReferenceEnvironment currentScope = this;
while (currentScope != null)
{
ActivityLocationReferenceEnvironment activityEnvironment = currentScope as ActivityLocationReferenceEnvironment;
if (activityEnvironment != null)
{
if (activityEnvironment.declarations != null)
{
foreach (LocationReference declaration in activityEnvironment.declarations.Values)
{
if (locationReference == declaration)
{
return(true);
}
}
}
if (activityEnvironment.unnamedDeclarations != null)
{
for (int i = 0; i < activityEnvironment.unnamedDeclarations.Count; i++)
{
if (locationReference == activityEnvironment.unnamedDeclarations[i])
{
return(true);
}
}
}
}
else
{
return(currentScope.IsVisible(locationReference));
}
currentScope = currentScope.Parent;
}
return(false);
}
public static void CacheMetadata(Activity rootActivity, LocationReferenceEnvironment hostEnvironment)
{
if (rootActivity == null)
{
throw FxTrace.Exception.ArgumentNull("rootActivity");
}
if (rootActivity.HasBeenAssociatedWithAnInstance)
{
throw FxTrace.Exception.AsError(new InvalidOperationException(System.Activities.SR.RootActivityAlreadyAssociatedWithInstance(rootActivity.DisplayName)));
}
IList<ValidationError> validationErrors = null;
if (hostEnvironment == null)
{
hostEnvironment = new ActivityLocationReferenceEnvironment();
}
ActivityUtilities.CacheRootMetadata(rootActivity, hostEnvironment, ProcessActivityTreeOptions.FullCachingOptions, null, ref validationErrors);
ActivityValidationServices.ThrowIfViolationsExist(validationErrors);
}
public static void CacheMetadata(Activity rootActivity, LocationReferenceEnvironment hostEnvironment)
{
if (rootActivity == null)
{
throw FxTrace.Exception.ArgumentNull("rootActivity");
}
if (rootActivity.HasBeenAssociatedWithAnInstance)
{
throw FxTrace.Exception.AsError(new InvalidOperationException(System.Activities.SR.RootActivityAlreadyAssociatedWithInstance(rootActivity.DisplayName)));
}
IList <ValidationError> validationErrors = null;
if (hostEnvironment == null)
{
hostEnvironment = new ActivityLocationReferenceEnvironment();
}
ActivityUtilities.CacheRootMetadata(rootActivity, hostEnvironment, ProcessActivityTreeOptions.FullCachingOptions, null, ref validationErrors);
ActivityValidationServices.ThrowIfViolationsExist(validationErrors);
}
public override bool TryGetLocationReference(string name, out LocationReference result)
{
if (name == null)
{
LocationReferenceEnvironment parent = base.Parent;
while (parent is ActivityLocationReferenceEnvironment)
{
parent = parent.Parent;
}
if (parent != null)
{
return(parent.TryGetLocationReference(name, out result));
}
}
else
{
if ((this.declarations != null) && this.declarations.TryGetValue(name, out result))
{
return(true);
}
bool flag = false;
LocationReferenceEnvironment environment2 = base.Parent;
while ((environment2 != null) && (environment2 is ActivityLocationReferenceEnvironment))
{
ActivityLocationReferenceEnvironment environment3 = (ActivityLocationReferenceEnvironment)environment2;
if ((environment3.declarations != null) && environment3.declarations.TryGetValue(name, out result))
{
return(true);
}
environment2 = environment2.Parent;
}
if ((!flag && (environment2 != null)) && environment2.TryGetLocationReference(name, out result))
{
return(true);
}
}
result = null;
return(false);
}
private static void ProcessVariables(Activity parent, IList <Variable> variables, ActivityCollectionType collectionType, bool addChildren, ref ActivityLocationReferenceEnvironment environment, ref int nextEnvironmentId, ref ChildActivity nextActivity, ref Stack <ChildActivity> activitiesRemaining, ref IList <ValidationError> validationErrors)
{
if (variables.Count > 0)
{
if (environment == null)
{
environment = new ActivityLocationReferenceEnvironment(parent.GetParentEnvironment());
}
for (int i = 0; i < variables.Count; i++)
{
Variable locationReference = variables[i];
if (locationReference.InitializeRelationship(parent, collectionType == ActivityCollectionType.Public, ref validationErrors))
{
locationReference.Id = nextEnvironmentId;
nextEnvironmentId++;
environment.Declare(locationReference, locationReference.Owner, ref validationErrors);
if (addChildren)
{
SetupForProcessing(locationReference, ref nextActivity, ref activitiesRemaining);
}
}
}
}
}
private static void ProcessArguments(Activity parent, IList <RuntimeArgument> arguments, bool addChildren, ref ActivityLocationReferenceEnvironment environment, ref int nextEnvironmentId, ref ChildActivity nextActivity, ref Stack <ChildActivity> activitiesRemaining, ref IList <ValidationError> validationErrors)
{
if (arguments.Count > 0)
{
if (environment == null)
{
environment = new ActivityLocationReferenceEnvironment(parent.GetParentEnvironment());
}
for (int i = 0; i < arguments.Count; i++)
{
RuntimeArgument locationReference = arguments[i];
if (locationReference.InitializeRelationship(parent, ref validationErrors))
{
locationReference.Id = nextEnvironmentId;
nextEnvironmentId++;
environment.Declare(locationReference, locationReference.Owner, ref validationErrors);
if (addChildren)
{
SetupForProcessing(locationReference, ref nextActivity, ref activitiesRemaining);
}
}
}
}
}
public override bool IsVisible(LocationReference locationReference)
{
if (locationReference == null)
{
throw FxTrace.Exception.ArgumentNull("locationReference");
}
for (LocationReferenceEnvironment environment = this; environment != null; environment = environment.Parent)
{
ActivityLocationReferenceEnvironment environment2 = environment as ActivityLocationReferenceEnvironment;
if (environment2 == null)
{
return(environment.IsVisible(locationReference));
}
if (environment2.declarations != null)
{
foreach (LocationReference reference in environment2.declarations.Values)
{
if (locationReference == reference)
{
return(true);
}
}
}
if (environment2.unnamedDeclarations != null)
{
for (int i = 0; i < environment2.unnamedDeclarations.Count; i++)
{
if (locationReference == environment2.unnamedDeclarations[i])
{
return(true);
}
}
}
}
return(false);
}
internal bool InitializeRelationship(Activity parent, ActivityCollectionType collectionType, ref IList <ValidationError> validationErrors)
{
if (this.cacheId == parent.CacheId)
{
Activity owner = parent.MemberOf.Owner;
if (owner == null)
{
Activity activity2 = this.Handler;
if (activity2 == null)
{
ActivityUtilities.Add <ValidationError>(ref validationErrors, new ValidationError(System.Activities.SR.ActivityDelegateCannotBeReferencedWithoutTargetNoHandler(parent.DisplayName, this.owner.DisplayName), false, parent));
}
else
{
ActivityUtilities.Add <ValidationError>(ref validationErrors, new ValidationError(System.Activities.SR.ActivityDelegateCannotBeReferencedWithoutTarget(activity2.DisplayName, parent.DisplayName, this.owner.DisplayName), false, parent));
}
return(false);
}
if (owner.Delegates.Contains(this) || owner.ImportedDelegates.Contains(this))
{
return(true);
}
Activity handler = this.Handler;
if (handler == null)
{
ActivityUtilities.Add <ValidationError>(ref validationErrors, new ValidationError(System.Activities.SR.ActivityDelegateCannotBeReferencedNoHandler(parent.DisplayName, owner.DisplayName, this.owner.DisplayName), false, parent));
}
else
{
ActivityUtilities.Add <ValidationError>(ref validationErrors, new ValidationError(System.Activities.SR.ActivityDelegateCannotBeReferenced(handler.DisplayName, parent.DisplayName, owner.DisplayName, this.owner.DisplayName), false, parent));
}
return(false);
}
this.owner = parent;
this.cacheId = parent.CacheId;
this.parentCollectionType = collectionType;
this.InternalCacheMetadata();
LocationReferenceEnvironment implementationEnvironment = null;
if (collectionType == ActivityCollectionType.Implementation)
{
implementationEnvironment = parent.ImplementationEnvironment;
}
else
{
implementationEnvironment = parent.PublicEnvironment;
}
if (this.RuntimeDelegateArguments.Count > 0)
{
ActivityLocationReferenceEnvironment environment2 = new ActivityLocationReferenceEnvironment(implementationEnvironment);
implementationEnvironment = environment2;
for (int i = 0; i < this.RuntimeDelegateArguments.Count; i++)
{
RuntimeDelegateArgument argument = this.RuntimeDelegateArguments[i];
DelegateArgument boundArgument = argument.BoundArgument;
if (boundArgument != null)
{
if (boundArgument.Direction != argument.Direction)
{
ActivityUtilities.Add <ValidationError>(ref validationErrors, new ValidationError(System.Activities.SR.RuntimeDelegateArgumentDirectionIncorrect, parent));
}
if (boundArgument.Type != argument.Type)
{
ActivityUtilities.Add <ValidationError>(ref validationErrors, new ValidationError(System.Activities.SR.RuntimeDelegateArgumentTypeIncorrect, parent));
}
environment2.Declare(boundArgument, this.owner, ref validationErrors);
}
}
}
this.Environment = implementationEnvironment;
if (this.Handler != null)
{
return(this.Handler.InitializeRelationship(this, collectionType, ref validationErrors));
}
return(true);
}
/// <summary>
/// Initializes the relationship.
/// </summary>
/// <param name="parent">The parent.</param>
/// <param name="collectionType">Type of the collection.</param>
/// <param name="validationErrors">The validation errors.</param>
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
internal bool InitializeRelationship(Activity parent, ActivityCollectionType collectionType, ref IList <ValidationError> validationErrors)
{
if (this.cacheId == parent.CacheId)
{
Fx.Assert(this.Owner != null, "We must have set the owner when we set the cache ID");
// This means that we've already encountered a parent in the tree
// Validate that it is visible.
// In order to see the activity the new parent must be in the implementation IdSpace
// of an activity which has a public reference to it.
var referenceTarget = parent.MemberOf.Owner;
if (referenceTarget == null)
{
var handler = this.Handler;
if (handler == null)
{
ActivityUtilities.Add(
ref validationErrors,
new ValidationError(SR.ActivityDelegateCannotBeReferencedWithoutTargetNoHandler(parent.DisplayName, this.Owner.DisplayName),
false,
parent));
}
else
{
ActivityUtilities.Add(
ref validationErrors,
new ValidationError(SR.ActivityDelegateCannotBeReferencedWithoutTarget(handler.DisplayName, parent.DisplayName, this.Owner.DisplayName),
false,
parent));
}
return(false);
}
else if (!referenceTarget.Delegates.Contains(this) && !referenceTarget.ImportedDelegates.Contains(this))
{
var handler = this.Handler;
if (handler == null)
{
ActivityUtilities.Add(
ref validationErrors,
new ValidationError(SR.ActivityDelegateCannotBeReferencedNoHandler(parent.DisplayName, referenceTarget.DisplayName, this.Owner.DisplayName),
false,
parent));
}
else
{
ActivityUtilities.Add(
ref validationErrors,
new ValidationError(SR.ActivityDelegateCannotBeReferenced(handler.DisplayName, parent.DisplayName, referenceTarget.DisplayName, this.Owner.DisplayName),
false,
parent));
}
return(false);
}
// This is a valid reference so we want to allow normal processing to proceed.
return(true);
}
this.Owner = parent;
this.cacheId = parent.CacheId;
this.ParentCollectionType = collectionType;
this.InternalCacheMetadata();
// We need to setup the delegate environment so that it is available when we process the Handler.
var delegateEnvironment = collectionType == ActivityCollectionType.Implementation ? parent.ImplementationEnvironment : parent.PublicEnvironment;
if (this.RuntimeDelegateArguments.Count > 0)
{
var newEnvironment = new ActivityLocationReferenceEnvironment(delegateEnvironment);
delegateEnvironment = newEnvironment;
for (var argumentIndex = 0; argumentIndex < this.RuntimeDelegateArguments.Count; argumentIndex++)
{
var runtimeDelegateArgument = this.RuntimeDelegateArguments[argumentIndex];
var delegateArgument = runtimeDelegateArgument.BoundArgument;
if (delegateArgument != null)
{
if (delegateArgument.Direction != runtimeDelegateArgument.Direction)
{
ActivityUtilities.Add(ref validationErrors, new ValidationError(SR.RuntimeDelegateArgumentDirectionIncorrect, parent));
}
if (delegateArgument.Type != runtimeDelegateArgument.Type)
{
ActivityUtilities.Add(ref validationErrors, new ValidationError(SR.RuntimeDelegateArgumentTypeIncorrect, parent));
}
// NOTE: We don't initialize this relationship here because at runtime we'll
// actually just place these variables in the environment of the Handler.
// We'll initialize and set an ID when we process the Handler.
newEnvironment.Declare(delegateArgument, this.Owner, ref validationErrors);
}
}
}
this.Environment = delegateEnvironment;
return(this.Handler == null ? true : this.Handler.InitializeRelationship(this, collectionType, ref validationErrors));
}
public override bool TryGetLocationReference(string name, out LocationReference result)
{
if (name == null)
{
// We don't allow null names in our LocationReferenceEnvironment but
// a custom declared environment might. We need to walk up
// to the root and see if it chains to a
// non-ActivityLocationReferenceEnvironment implementation
LocationReferenceEnvironment currentEnvironment = this.Parent;
while (currentEnvironment is ActivityLocationReferenceEnvironment)
{
currentEnvironment = currentEnvironment.Parent;
}
if (currentEnvironment != null)
{
Fx.Assert(!(currentEnvironment is ActivityLocationReferenceEnvironment), "We must be at a non-ActivityLocationReferenceEnvironment implementation.");
return(currentEnvironment.TryGetLocationReference(name, out result));
}
}
else
{
if (this.declarations != null && this.declarations.TryGetValue(name, out result))
{
return(true);
}
bool found = false;
LocationReferenceEnvironment currentEnvironment = this.Parent;
LocationReferenceEnvironment rootEnvironment = this;
// Loop through all of the ActivityLocationReferenceEnvironments we have chained together
while (currentEnvironment != null && currentEnvironment is ActivityLocationReferenceEnvironment)
{
ActivityLocationReferenceEnvironment activityEnvironment = (ActivityLocationReferenceEnvironment)currentEnvironment;
if (activityEnvironment.declarations != null && activityEnvironment.declarations.TryGetValue(name, out result))
{
return(true);
}
rootEnvironment = currentEnvironment;
currentEnvironment = currentEnvironment.Parent;
}
if (!found)
{
if (currentEnvironment != null)
{
// Looks like we have a non-ActivityLocationReferenceEnvironment at the root
Fx.Assert(!(currentEnvironment is ActivityLocationReferenceEnvironment), "We should have some other host environment at this point.");
if (currentEnvironment.TryGetLocationReference(name, out result))
{
return(true);
}
}
}
}
result = null;
return(false);
}
private static void ProcessActivity(ChildActivity childActivity, ref ChildActivity nextActivity, ref Stack <ChildActivity> activitiesRemaining, ActivityCallStack parentChain, ref IList <ValidationError> validationErrors, ProcessActivityTreeOptions options, ProcessActivityCallback callback)
{
Activity element = childActivity.Activity;
IList <Constraint> runtimeConstraints = element.RuntimeConstraints;
IList <ValidationError> list2 = null;
if (!element.HasStartedCachingMetadata)
{
element.MemberOf.AddMember(element);
element.InternalCacheMetadata(options.CreateEmptyBindings, ref list2);
ActivityValidationServices.ValidateArguments(element, element.Parent == null, ref list2);
ActivityLocationReferenceEnvironment environment = null;
ActivityLocationReferenceEnvironment environment2 = new ActivityLocationReferenceEnvironment(element.HostEnvironment)
{
InternalRoot = element
};
int nextEnvironmentId = 0;
ProcessChildren(element, element.Children, ActivityCollectionType.Public, true, ref nextActivity, ref activitiesRemaining, ref list2);
ProcessChildren(element, element.ImportedChildren, ActivityCollectionType.Imports, true, ref nextActivity, ref activitiesRemaining, ref list2);
ProcessChildren(element, element.ImplementationChildren, ActivityCollectionType.Implementation, !options.SkipPrivateChildren, ref nextActivity, ref activitiesRemaining, ref list2);
ProcessArguments(element, element.RuntimeArguments, true, ref environment2, ref nextEnvironmentId, ref nextActivity, ref activitiesRemaining, ref list2);
ProcessVariables(element, element.RuntimeVariables, ActivityCollectionType.Public, true, ref environment, ref nextEnvironmentId, ref nextActivity, ref activitiesRemaining, ref list2);
ProcessVariables(element, element.ImplementationVariables, ActivityCollectionType.Implementation, !options.SkipPrivateChildren, ref environment2, ref nextEnvironmentId, ref nextActivity, ref activitiesRemaining, ref list2);
if (element.HandlerOf != null)
{
for (int i = 0; i < element.HandlerOf.RuntimeDelegateArguments.Count; i++)
{
RuntimeDelegateArgument argument = element.HandlerOf.RuntimeDelegateArguments[i];
DelegateArgument boundArgument = argument.BoundArgument;
if ((boundArgument != null) && boundArgument.InitializeRelationship(element, ref list2))
{
boundArgument.Id = nextEnvironmentId;
nextEnvironmentId++;
}
}
}
if (environment == null)
{
element.PublicEnvironment = new ActivityLocationReferenceEnvironment(element.GetParentEnvironment());
}
else
{
if (environment.Parent == null)
{
environment.InternalRoot = element;
}
element.PublicEnvironment = environment;
}
element.ImplementationEnvironment = environment2;
ProcessDelegates(element, element.Delegates, ActivityCollectionType.Public, true, ref nextActivity, ref activitiesRemaining, ref list2);
ProcessDelegates(element, element.ImportedDelegates, ActivityCollectionType.Imports, true, ref nextActivity, ref activitiesRemaining, ref list2);
ProcessDelegates(element, element.ImplementationDelegates, ActivityCollectionType.Implementation, !options.SkipPrivateChildren, ref nextActivity, ref activitiesRemaining, ref list2);
if (callback != null)
{
callback(childActivity, parentChain);
}
if (list2 != null)
{
Activity activity2;
if (validationErrors == null)
{
validationErrors = new List <ValidationError>();
}
string str = ActivityValidationServices.GenerateValidationErrorPrefix(childActivity.Activity, parentChain, out activity2);
for (int j = 0; j < list2.Count; j++)
{
ValidationError item = list2[j];
item.Source = activity2;
item.Id = activity2.Id;
if (!string.IsNullOrEmpty(str))
{
item.Message = str + item.Message;
}
validationErrors.Add(item);
}
list2 = null;
}
if (options.StoreTempViolations && (validationErrors != null))
{
childActivity.Activity.SetTempValidationErrorCollection(validationErrors);
validationErrors = null;
}
}
else
{
SetupForProcessing(element.Children, true, ref nextActivity, ref activitiesRemaining);
SetupForProcessing(element.ImportedChildren, false, ref nextActivity, ref activitiesRemaining);
SetupForProcessing(element.RuntimeArguments, ref nextActivity, ref activitiesRemaining);
SetupForProcessing(element.RuntimeVariables, ref nextActivity, ref activitiesRemaining);
SetupForProcessing(element.Delegates, true, ref nextActivity, ref activitiesRemaining);
SetupForProcessing(element.ImportedDelegates, false, ref nextActivity, ref activitiesRemaining);
if (!options.SkipPrivateChildren)
{
SetupForProcessing(element.ImplementationChildren, true, ref nextActivity, ref activitiesRemaining);
SetupForProcessing(element.ImplementationDelegates, true, ref nextActivity, ref activitiesRemaining);
SetupForProcessing(element.ImplementationVariables, ref nextActivity, ref activitiesRemaining);
}
if ((callback != null) && !options.OnlyCallCallbackForDeclarations)
{
callback(childActivity, parentChain);
}
if (childActivity.Activity.HasTempViolations && !options.StoreTempViolations)
{
childActivity.Activity.TransferTempValidationErrors(ref validationErrors);
}
}
if ((!options.SkipConstraints && parentChain.WillExecute) && (childActivity.CanBeExecuted && (runtimeConstraints.Count > 0)))
{
ActivityValidationServices.RunConstraints(childActivity, parentChain, runtimeConstraints, options, false, ref validationErrors);
}
}
internal bool InitializeRelationship(Activity parent, ActivityCollectionType collectionType, ref IList<ValidationError> validationErrors)
{
if (this.cacheId == parent.CacheId)
{
Fx.Assert(this.owner != null, "We must have set the owner when we set the cache ID");
// This means that we've already encountered a parent in the tree
// Validate that it is visible.
// In order to see the activity the new parent must be
// in the implementation IdSpace of an activity which has
// a public reference to it.
Activity referenceTarget = parent.MemberOf.Owner;
if (referenceTarget == null)
{
Activity handler = this.Handler;
if (handler == null)
{
ActivityUtilities.Add(ref validationErrors, new ValidationError(SR.ActivityDelegateCannotBeReferencedWithoutTargetNoHandler(parent.DisplayName, this.owner.DisplayName), false, parent));
}
else
{
ActivityUtilities.Add(ref validationErrors, new ValidationError(SR.ActivityDelegateCannotBeReferencedWithoutTarget(handler.DisplayName, parent.DisplayName, this.owner.DisplayName), false, parent));
}
return false;
}
else if (!referenceTarget.Delegates.Contains(this) && !referenceTarget.ImportedDelegates.Contains(this))
{
Activity handler = this.Handler;
if (handler == null)
{
ActivityUtilities.Add(ref validationErrors, new ValidationError(SR.ActivityDelegateCannotBeReferencedNoHandler(parent.DisplayName, referenceTarget.DisplayName, this.owner.DisplayName), false, parent));
}
else
{
ActivityUtilities.Add(ref validationErrors, new ValidationError(SR.ActivityDelegateCannotBeReferenced(handler.DisplayName, parent.DisplayName, referenceTarget.DisplayName, this.owner.DisplayName), false, parent));
}
return false;
}
// This is a valid reference so we want to allow
// normal processing to proceed.
return true;
}
this.owner = parent;
this.cacheId = parent.CacheId;
this.parentCollectionType = collectionType;
InternalCacheMetadata();
// We need to setup the delegate environment so that it is
// available when we process the Handler.
LocationReferenceEnvironment delegateEnvironment = null;
if (collectionType == ActivityCollectionType.Implementation)
{
delegateEnvironment = parent.ImplementationEnvironment;
}
else
{
delegateEnvironment = parent.PublicEnvironment;
}
if (this.RuntimeDelegateArguments.Count > 0)
{
ActivityLocationReferenceEnvironment newEnvironment = new ActivityLocationReferenceEnvironment(delegateEnvironment);
delegateEnvironment = newEnvironment;
for (int argumentIndex = 0; argumentIndex < this.RuntimeDelegateArguments.Count; argumentIndex++)
{
RuntimeDelegateArgument runtimeDelegateArgument = this.RuntimeDelegateArguments[argumentIndex];
DelegateArgument delegateArgument = runtimeDelegateArgument.BoundArgument;
if (delegateArgument != null)
{
if (delegateArgument.Direction != runtimeDelegateArgument.Direction)
{
ActivityUtilities.Add(ref validationErrors, new ValidationError(SR.RuntimeDelegateArgumentDirectionIncorrect, parent));
}
if (delegateArgument.Type != runtimeDelegateArgument.Type)
{
ActivityUtilities.Add(ref validationErrors, new ValidationError(SR.RuntimeDelegateArgumentTypeIncorrect, parent));
}
// NOTE: We don't initialize this relationship here because
// at runtime we'll actually just place these variables in the
// environment of the Handler. We'll initialize and set an
// ID when we process the Handler.
newEnvironment.Declare(delegateArgument, this.owner, ref validationErrors);
}
}
}
this.Environment = delegateEnvironment;
if (this.Handler != null)
{
return this.Handler.InitializeRelationship(this, collectionType, ref validationErrors);
}
return true;
}