public override void SetValue(ContextItem value)
{
if (value == null)
{
throw new ArgumentNullException("value");
}
ContextItem valueNull;
ContextItem previousItem = (valueNull = this.GetValueNull(value.ItemType)) ?? this.GetValue(value.ItemType);
bool flag = false;
try
{
this._currentLayer.Items[value.ItemType] = value;
ContextItemManager.NotifyItemChanged(this._context, value, previousItem);
flag = true;
}
finally
{
if (flag)
{
this.OnItemChanged(value);
}
else
{
this._currentLayer.Items.Remove(value.ItemType);
if (valueNull != null)
{
this.SetValue(valueNull);
}
}
}
}
public override void Unsubscribe(Type contextItemType, SubscribeContextCallback callback)
{
if (contextItemType == null)
{
throw new ArgumentNullException("contextItemType");
}
if (callback == null)
{
throw new ArgumentNullException("callback");
}
if (!typeof(ContextItem).IsAssignableFrom(contextItemType))
{
throw new ArgumentException(string.Format((IFormatProvider)CultureInfo.CurrentCulture, Resources.Error_ArgIncorrectType, new object[2]
{
(object)"contextItemType",
(object)typeof(ContextItem).FullName
}));
}
SubscribeContextCallback subscribeContextCallback1;
if (this._subscriptions == null || !this._subscriptions.TryGetValue(contextItemType, out subscribeContextCallback1))
{
return;
}
SubscribeContextCallback subscribeContextCallback2 = (SubscribeContextCallback)ContextItemManager.RemoveCallback((Delegate)subscribeContextCallback1, (Delegate)callback);
if (subscribeContextCallback2 == null)
{
this._subscriptions.Remove(contextItemType);
}
else
{
this._subscriptions[contextItemType] = subscribeContextCallback2;
}
}
