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// ---------------------------------------------------------------------------
// Copyright (C) 2005 Microsoft Corporation - All Rights Reserved
// ---------------------------------------------------------------------------
using System;
using System.Diagnostics;
using System.CodeDom;
using System.Collections.ObjectModel;
using System.ComponentModel.Design.Serialization;
using System.Collections.Generic;
using System.Workflow.ComponentModel;
using System.Globalization;
using System.IO;
using System.Workflow.ComponentModel.Serialization;
namespace System.Workflow.Activities.Rules
{
#region RuleConditionCollection Class
[Serializable]
public sealed class RuleConditionCollection : KeyedCollection<string, RuleCondition>, IWorkflowChangeDiff
{
private bool _runtimeInitialized;
[NonSerialized]
private object _runtimeInitializationLock = new object();
public RuleConditionCollection()
{
}
protected override string GetKeyForItem(RuleCondition item)
{
return item.Name;
}
/// <summary>
/// Mark the DeclarativeConditionDefinitionCollection as Runtime Initialized to prevent direct runtime updates.
/// </summary>
internal void OnRuntimeInitialized()
{
lock (_runtimeInitializationLock)
{
if (_runtimeInitialized)
return;
foreach (RuleCondition condition in this)
{
condition.OnRuntimeInitialized();
}
_runtimeInitialized = true;
}
}
protected override void InsertItem(int index, RuleCondition item)
{
if (this._runtimeInitialized)
throw new InvalidOperationException(SR.GetString(SR.Error_CanNotChangeAtRuntime));
if (item.Name != null && item.Name.Length >= 0 && this.Contains(item.Name))
{
string message = string.Format(CultureInfo.CurrentCulture, Messages.ConditionExists, item.Name);
throw new ArgumentException(message);
}
base.InsertItem(index, item);
}
protected override void RemoveItem(int index)
{
if (this._runtimeInitialized)
throw new InvalidOperationException(SR.GetString(SR.Error_CanNotChangeAtRuntime));
base.RemoveItem(index);
}
protected override void SetItem(int index, RuleCondition item)
{
if (this._runtimeInitialized)
throw new InvalidOperationException(SR.GetString(SR.Error_CanNotChangeAtRuntime));
base.SetItem(index, item);
}
internal bool RuntimeMode
{
set { this._runtimeInitialized = value; }
get { return this._runtimeInitialized; }
}
new public void Add(RuleCondition item)
{
if (this._runtimeInitialized)
throw new InvalidOperationException(SR.GetString(SR.Error_CanNotChangeAtRuntime));
if (null == item)
{
throw new ArgumentNullException("item");
}
if (null == item.Name)
{
string message = string.Format(CultureInfo.CurrentCulture, Messages.InvalidConditionName, "item.Name");
throw new ArgumentException(message);
}
base.Add(item);
}
public IList<WorkflowChangeAction> Diff(object originalDefinition, object changedDefinition)
{
List<WorkflowChangeAction> listChanges = new List<WorkflowChangeAction>();
RuleConditionCollection originalConditions = (RuleConditionCollection)originalDefinition;
RuleConditionCollection changedConditions = (RuleConditionCollection)changedDefinition;
if (null != changedConditions)
{
foreach (RuleCondition cCondition in changedConditions)
{
if (null != originalConditions)
{
if (originalConditions.Contains(cCondition.Name))
{
RuleCondition oCondition = originalConditions[cCondition.Name];
if (!oCondition.Equals(cCondition))
{
listChanges.Add(new UpdatedConditionAction(oCondition, cCondition));
}
}
else
{
listChanges.Add(new AddedConditionAction(cCondition));
}
}
else
{
listChanges.Add(new AddedConditionAction(cCondition));
}
}
}
if (null != originalConditions)
{
foreach (RuleCondition oCondition in originalConditions)
{
if (null != changedConditions)
{
if (!changedConditions.Contains(oCondition.Name))
{
listChanges.Add(new RemovedConditionAction(oCondition));
}
}
else
{
listChanges.Add(new RemovedConditionAction(oCondition));
}
}
}
return listChanges;
}
}
#endregion
}
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