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//------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//------------------------------------------------------------
namespace System.Activities
{
using System;
using System.Runtime;
using System.Collections.ObjectModel;
using System.Activities.Validation;
public struct CodeActivityMetadata
{
Activity activity;
LocationReferenceEnvironment environment;
bool createEmptyBindings;
internal CodeActivityMetadata(Activity activity, LocationReferenceEnvironment environment, bool createEmptyBindings)
{
this.activity = activity;
this.environment = environment;
this.createEmptyBindings = createEmptyBindings;
}
internal bool CreateEmptyBindings
{
get
{
return this.createEmptyBindings;
}
}
public LocationReferenceEnvironment Environment
{
get
{
return this.environment;
}
}
internal Activity CurrentActivity
{
get
{
return this.activity;
}
}
public bool HasViolations
{
get
{
if (this.activity == null)
{
return false;
}
else
{
return this.activity.HasTempViolations;
}
}
}
public static bool operator ==(CodeActivityMetadata left, CodeActivityMetadata right)
{
return left.Equals(right);
}
public static bool operator !=(CodeActivityMetadata left, CodeActivityMetadata right)
{
return !left.Equals(right);
}
public override bool Equals(object obj)
{
if (!(obj is CodeActivityMetadata))
{
return false;
}
CodeActivityMetadata other = (CodeActivityMetadata)obj;
return other.activity == this.activity && other.Environment == this.Environment
&& other.CreateEmptyBindings == this.CreateEmptyBindings;
}
public override int GetHashCode()
{
if (this.activity == null)
{
return 0;
}
else
{
return this.activity.GetHashCode();
}
}
public void Bind(Argument binding, RuntimeArgument argument)
{
ThrowIfDisposed();
Argument.TryBind(binding, argument, this.activity);
}
public void SetValidationErrorsCollection(Collection<ValidationError> validationErrors)
{
ThrowIfDisposed();
ActivityUtilities.RemoveNulls(validationErrors);
this.activity.SetTempValidationErrorCollection(validationErrors);
}
public void AddValidationError(string validationErrorMessage)
{
AddValidationError(new ValidationError(validationErrorMessage));
}
public void AddValidationError(ValidationError validationError)
{
ThrowIfDisposed();
if (validationError != null)
{
this.activity.AddTempValidationError(validationError);
}
}
public void SetArgumentsCollection(Collection<RuntimeArgument> arguments)
{
ThrowIfDisposed();
ActivityUtilities.RemoveNulls(arguments);
this.activity.SetArgumentsCollection(arguments, this.createEmptyBindings);
}
public void AddArgument(RuntimeArgument argument)
{
ThrowIfDisposed();
if (argument != null)
{
this.activity.AddArgument(argument, this.createEmptyBindings);
}
}
public Collection<RuntimeArgument> GetArgumentsWithReflection()
{
return Activity.ReflectedInformation.GetArguments(this.activity);
}
public void AddDefaultExtensionProvider<T>(Func<T> extensionProvider)
where T : class
{
if (extensionProvider == null)
{
throw FxTrace.Exception.ArgumentNull("extensionProvider");
}
this.activity.AddDefaultExtensionProvider(extensionProvider);
}
public void RequireExtension<T>()
where T : class
{
this.activity.RequireExtension(typeof(T));
}
public void RequireExtension(Type extensionType)
{
if (extensionType == null)
{
throw FxTrace.Exception.ArgumentNull("extensionType");
}
if (extensionType.IsValueType)
{
throw FxTrace.Exception.Argument("extensionType", SR.RequireExtensionOnlyAcceptsReferenceTypes(extensionType.FullName));
}
this.activity.RequireExtension(extensionType);
}
internal void ThrowIfDisposed()
{
if (this.activity == null)
{
throw FxTrace.Exception.AsError(new ObjectDisposedException(ToString()));
}
}
internal void Dispose()
{
this.activity = null;
}
}
}
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