81 lines
2.9 KiB
C#
81 lines
2.9 KiB
C#
//-----------------------------------------------------------------------------
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//-----------------------------------------------------------------------------
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namespace System.Activities.Runtime
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{
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using System;
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using System.Runtime;
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using System.Runtime.Serialization;
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using System.Security;
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[DataContract]
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class BookmarkCallbackWrapper : CallbackWrapper
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{
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static readonly Type bookmarkCallbackType = typeof(BookmarkCallback);
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static readonly Type[] bookmarkCallbackParameters = new Type[] { typeof(NativeActivityContext), typeof(Bookmark), typeof(object) };
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public BookmarkCallbackWrapper(BookmarkCallback callback, ActivityInstance owningInstance)
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: this(callback, owningInstance, BookmarkOptions.None)
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{
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}
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public BookmarkCallbackWrapper(BookmarkCallback callback, ActivityInstance owningInstance, BookmarkOptions bookmarkOptions)
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: base(callback, owningInstance)
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{
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Fx.Assert(callback != null || bookmarkOptions == BookmarkOptions.None, "Either we have a callback or we only allow SingleFire, Blocking bookmarks.");
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this.Options = bookmarkOptions;
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}
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BookmarkOptions options;
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public BookmarkOptions Options
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{
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get
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{
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return this.options;
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}
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private set
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{
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this.options = value;
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}
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}
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[DataMember(EmitDefaultValue = false)]
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public Bookmark Bookmark
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{
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get;
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set;
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}
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[DataMember(EmitDefaultValue = false, Name = "Options")]
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internal BookmarkOptions SerializedOptions
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{
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get { return this.Options; }
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set { this.Options = value; }
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}
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[Fx.Tag.SecurityNote(Critical = "Because we are calling EnsureCallback",
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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.")]
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[SecuritySafeCritical]
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public void Invoke(NativeActivityContext context, Bookmark bookmark, object value)
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{
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EnsureCallback(bookmarkCallbackType, bookmarkCallbackParameters);
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BookmarkCallback bookmarkCallback = (BookmarkCallback)this.Callback;
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bookmarkCallback(context, bookmark, value);
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}
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public ActivityExecutionWorkItem CreateWorkItem(ActivityExecutor executor, bool isExternal, Bookmark bookmark, object value)
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{
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if (this.IsCallbackNull)
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{
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return executor.CreateEmptyWorkItem(this.ActivityInstance);
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}
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else
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{
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return new BookmarkWorkItem(executor, isExternal, this, bookmark, value);
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}
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}
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}
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}
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