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//
// System.Runtime.Remoting.Contexts.ContextAttribute.cs
//
// Author:
// Miguel de Icaza (miguel@ximian.com)
//
// (C) Ximian, Inc. http://www.ximian.com
//
//
// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Runtime.Remoting.Activation;
using System.Collections;
namespace System.Runtime.Remoting.Contexts {
[AttributeUsage (AttributeTargets.Class)]
[Serializable]
[System.Runtime.InteropServices.ComVisible (true)]
public class ContextAttribute : Attribute, IContextAttribute, IContextProperty {
protected string AttributeName;
public ContextAttribute (string name)
{
AttributeName = name;
}
public virtual string Name {
get {
return AttributeName;
}
}
public override bool Equals (object o)
{
if (o == null)
return false;
if (!(o is ContextAttribute))
return false;
ContextAttribute ca = (ContextAttribute) o;
if (ca.AttributeName != AttributeName)
return false;
return true;
}
public virtual void Freeze (Context newContext)
{
}
public override int GetHashCode ()
{
if (AttributeName == null)
return 0;
return AttributeName.GetHashCode ();
}
/// <summary>
/// Adds the current context property to the IConstructionCallMessage
/// </summary>
public virtual void GetPropertiesForNewContext (IConstructionCallMessage ctorMsg)
{
if (ctorMsg == null)
throw new ArgumentNullException ("ctorMsg");
IList list = ctorMsg.ContextProperties;
list.Add (this);
}
// <summary>
// True whether the context arguments satisfies the requirements
// of the current context.
// </summary>
public virtual bool IsContextOK (Context ctx, IConstructionCallMessage ctorMsg)
{
if (ctorMsg == null)
throw new ArgumentNullException ("ctorMsg");
if (ctx == null)
throw new ArgumentNullException ("ctx");
if (!ctorMsg.ActivationType.IsContextful)
return true;
IContextProperty p = ctx.GetProperty (AttributeName);
if (p == null)
return false;
if (this != p)
return false;
return true;
}
public virtual bool IsNewContextOK (Context newCtx)
{
return true;
}
}
}
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