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//------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//------------------------------------------------------------
namespace System.ServiceModel.Activities.Tracking.Configuration
{
using System.Configuration;
using System.Runtime;
using System.Diagnostics.CodeAnalysis;
// Base class for all the workflow tracking configuration collections
[Fx.Tag.XamlVisible(false)]
public class TrackingConfigurationCollection<TConfigurationElement> : ConfigurationElementCollection
where TConfigurationElement : TrackingConfigurationElement, new ()
{
public override ConfigurationElementCollectionType CollectionType
{
get { return ConfigurationElementCollectionType.BasicMap; }
}
public TConfigurationElement this[int index]
{
get
{
return (TConfigurationElement)base.BaseGet(index);
}
set
{
// Only validate input if config is not Read-Only, otherwise
// let BaseAdd throw appropriate exception
if (!this.IsReadOnly())
{
if (value == null)
{
throw FxTrace.Exception.ArgumentNull("value");
}
if (base.BaseGet(index) != null)
{
base.BaseRemoveAt(index);
}
}
base.BaseAdd(index, value);
}
}
protected override ConfigurationElement CreateNewElement()
{
return new TConfigurationElement();
}
[SuppressMessage(FxCop.Category.Configuration, FxCop.Rule.ConfigurationPropertyAttributeRule,
Justification = "This property is defined by the base class to compute unique key.")]
protected override object GetElementKey(ConfigurationElement element)
{
return ((TrackingConfigurationElement)element).ElementKey;
}
public void Add(TConfigurationElement element)
{
// Only validate input if config is not Read-Only, otherwise
// let BaseAdd throw appropriate exception
if (!this.IsReadOnly())
{
if (element == null)
{
throw FxTrace.Exception.ArgumentNull("element");
}
}
base.BaseAdd(element);
}
public void Clear()
{
base.BaseClear();
}
public int IndexOf(TConfigurationElement element)
{
if (element == null)
{
throw FxTrace.Exception.ArgumentNull("element");
}
return base.BaseIndexOf(element);
}
public void Remove(TConfigurationElement element)
{
// Only validate input if config is not Read-Only, otherwise
// let BaseRemove throw appropriate exception
if (!this.IsReadOnly())
{
if (element == null)
{
throw FxTrace.Exception.ArgumentNull("element");
}
}
base.BaseRemove(this.GetElementKey(element));
}
public void RemoveAt(int index)
{
base.BaseRemoveAt(index);
}
}
}
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