HandoffBehavior.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Core / System / Windows / Media / Animation / HandoffBehavior.cs / 1 / HandoffBehavior.cs
                        

                        
                            // HandoffBehavior.cs 
using MS.Internal.PresentationCore;     // FriendAccessAllowed

namespace System.Windows.Media.Animation
{ 
    /// 
    /// Used to specify how new animations will interact with any current 
    /// animations already applied to a property. 
    /// 
    public enum HandoffBehavior 
    {
        /// 
        /// New animations will completely replace all current animations
        /// on a property. The current value at the time of replacement 
        /// will be passed into the first new animation as the
        /// defaultOriginValue parameter to allow for smooth handoff. 
        ///  
        SnapshotAndReplace,
 
        /// 
        /// New animations will compose with the current animations. The new
        /// animations will be added after the current animations in the
        /// composition chain. 
        /// 
        Compose 
    } 

    internal static class HandoffBehaviorEnum 
    {
        // FxCop doesn't like people using Enum.IsDefined for enum validation
        //    [....]/CostlyCallAlternatives/EnumIsDefined.html
        // 
        // We have this to have the validation code alongside the enum
        //  definition.  (Rather than spread throughtout the codebase causing 
        //  maintenance headaches in the future.) 
        [FriendAccessAllowed] // Built into Core, also used by Framework.
        internal static bool IsDefined( HandoffBehavior handoffBehavior ) 
        {
            if( handoffBehavior < HandoffBehavior.SnapshotAndReplace ||
                handoffBehavior > HandoffBehavior.Compose )
            { 
                return false;
            } 
            else 
            {
                return true; 
            }
        }
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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