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//
// ShiftUI.Design.Behavior.BehaviorServiceAdornerCollectionEnumerator
//
// Author:
// Atsushi Enomoto ([email protected])
//
// Copyright (C) 2007 Novell, Inc.
//
//
// 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;
using System.Collections;
namespace ShiftUI.Design.Behavior
{
public class BehaviorServiceAdornerCollectionEnumerator : IEnumerator
{
BehaviorServiceAdornerCollection mappings;
int index, state;
public BehaviorServiceAdornerCollectionEnumerator (BehaviorServiceAdornerCollection mappings)
{
if (mappings == null)
throw new ArgumentNullException ("mappings");
this.mappings = mappings;
Reset ();
}
public Adorner Current {
get { return index < 0 ? null : mappings [index]; }
}
void CheckState ()
{
if (mappings.State != state)
throw new InvalidOperationException ("Collection has changed");
}
public bool MoveNext ()
{
CheckState ();
if (index++ < mappings.Count)
return true;
index--;
return false;
}
public void Reset ()
{
index = -1;
}
object IEnumerator.Current {
get { return Current; }
}
bool IEnumerator.MoveNext ()
{
return MoveNext ();
}
void IEnumerator.Reset ()
{
Reset ();
}
}
}
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