Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Workflow.Activities/Rules/DeclarativeConditionsCollection.cs

@@ -0,0 +1,163 @@
+// ---------------------------------------------------------------------------
+// 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
+}
+