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//-----------------------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//-----------------------------------------------------------------------------
namespace System.Activities.Runtime
{
using System;
using System.Runtime;
using System.Runtime.Serialization;
using System.Security;
[DataContract]
class BookmarkCallbackWrapper : CallbackWrapper
{
static readonly Type bookmarkCallbackType = typeof(BookmarkCallback);
static readonly Type[] bookmarkCallbackParameters = new Type[] { typeof(NativeActivityContext), typeof(Bookmark), typeof(object) };
public BookmarkCallbackWrapper(BookmarkCallback callback, ActivityInstance owningInstance)
: this(callback, owningInstance, BookmarkOptions.None)
{
}
public BookmarkCallbackWrapper(BookmarkCallback callback, ActivityInstance owningInstance, BookmarkOptions bookmarkOptions)
: base(callback, owningInstance)
{
Fx.Assert(callback != null || bookmarkOptions == BookmarkOptions.None, "Either we have a callback or we only allow SingleFire, Blocking bookmarks.");
this.Options = bookmarkOptions;
}
BookmarkOptions options;
public BookmarkOptions Options
{
get
{
return this.options;
}
private set
{
this.options = value;
}
}
[DataMember(EmitDefaultValue = false)]
public Bookmark Bookmark
{
get;
set;
}
[DataMember(EmitDefaultValue = false, Name = "Options")]
internal BookmarkOptions SerializedOptions
{
get { return this.Options; }
set { this.Options = value; }
}
[Fx.Tag.SecurityNote(Critical = "Because we are calling EnsureCallback",
Safe = "Safe because the method needs to be part of an Activity and we are casting to the callback type and it has a very specific signature. The author of the callback is buying into being invoked from PT.")]
[SecuritySafeCritical]
public void Invoke(NativeActivityContext context, Bookmark bookmark, object value)
{
EnsureCallback(bookmarkCallbackType, bookmarkCallbackParameters);
BookmarkCallback bookmarkCallback = (BookmarkCallback)this.Callback;
bookmarkCallback(context, bookmark, value);
}
public ActivityExecutionWorkItem CreateWorkItem(ActivityExecutor executor, bool isExternal, Bookmark bookmark, object value)
{
if (this.IsCallbackNull)
{
return executor.CreateEmptyWorkItem(this.ActivityInstance);
}
else
{
return new BookmarkWorkItem(executor, isExternal, this, bookmark, value);
}
}
}
}
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