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// <copyright>
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
namespace System.Activities.DynamicUpdate
{
using System;
using System.Activities.DynamicUpdate;
using System.Activities.XamlIntegration;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Globalization;
using System.Runtime;
using System.Runtime.Serialization;
public class DynamicUpdateMapQuery
{
private DynamicUpdateMap map;
private Activity updatedWorkflowDefinition;
private Activity originalWorkflowDefinition;
internal DynamicUpdateMapQuery(DynamicUpdateMap map, Activity updatedWorkflowDefinition, Activity originalWorkflowDefinition)
{
Fx.Assert(updatedWorkflowDefinition == updatedWorkflowDefinition.RootActivity, "This parameter must be root of workflow");
Fx.Assert(originalWorkflowDefinition == originalWorkflowDefinition.RootActivity, "This parameter must be root of workflow");
this.map = map;
this.updatedWorkflowDefinition = updatedWorkflowDefinition;
this.originalWorkflowDefinition = originalWorkflowDefinition;
}
public Activity FindMatch(Activity activity)
{
if (activity == null)
{
throw FxTrace.Exception.ArgumentNull("activity");
}
if (IsInNewDefinition(activity))
{
return this.MatchNewToOld(activity);
}
else
{
return this.MatchOldToNew(activity);
}
}
public Variable FindMatch(Variable variable)
{
if (variable == null)
{
throw FxTrace.Exception.ArgumentNull("variable");
}
if (IsInNewDefinition(variable))
{
return this.MatchNewToOld(variable);
}
else
{
return this.MatchOldToNew(variable);
}
}
public bool CanApplyUpdateWhileRunning(Activity activity)
{
if (activity == null)
{
throw FxTrace.Exception.ArgumentNull("activity");
}
return this.CanApplyUpdateWhileRunning(activity, IsInNewDefinition(activity));
}
private Activity MatchNewToOld(Activity newActivity)
{
DynamicUpdateMapEntry entry;
return this.MatchNewToOld(newActivity, out entry);
}
private Activity MatchNewToOld(Activity newActivity, out DynamicUpdateMapEntry entry)
{
entry = null;
if (this.map.TryGetUpdateEntryByNewId(newActivity.InternalId, out entry))
{
IdSpace rootIdSpace;
if (this.map.IsForImplementation)
{
rootIdSpace = this.originalWorkflowDefinition.ParentOf;
}
else
{
rootIdSpace = this.originalWorkflowDefinition.MemberOf;
}
if (rootIdSpace != null)
{
return rootIdSpace[entry.OldActivityId];
}
}
return null;
}
private Variable MatchNewToOld(Variable newVariable)
{
if (!newVariable.IsPublic)
{
return null;
}
DynamicUpdateMapEntry entry;
Activity oldOwner = this.MatchNewToOld(newVariable.Owner, out entry);
if (oldOwner == null)
{
return null;
}
int newIndex = newVariable.Owner.RuntimeVariables.IndexOf(newVariable);
int? oldIndex = entry.HasEnvironmentUpdates ?
entry.EnvironmentUpdateMap.GetOldVariableIndex(newIndex) :
newIndex;
return oldIndex.HasValue ? oldOwner.RuntimeVariables[oldIndex.Value] : null;
}
private Activity MatchOldToNew(Activity oldActivity)
{
DynamicUpdateMapEntry entry;
return this.MatchOldToNew(oldActivity, out entry);
}
private Activity MatchOldToNew(Activity oldActivity, out DynamicUpdateMapEntry entry)
{
entry = null;
if (this.map.TryGetUpdateEntry(oldActivity.InternalId, out entry) && entry.NewActivityId > 0)
{
IdSpace rootIdSpace;
if (this.map.IsForImplementation)
{
rootIdSpace = this.updatedWorkflowDefinition.ParentOf;
}
else
{
rootIdSpace = this.updatedWorkflowDefinition.MemberOf;
}
if (rootIdSpace != null)
{
return rootIdSpace[entry.NewActivityId];
}
}
return null;
}
private Variable MatchOldToNew(Variable oldVariable)
{
if (!oldVariable.IsPublic)
{
return null;
}
DynamicUpdateMapEntry entry;
Activity newOwner = this.MatchOldToNew(oldVariable.Owner, out entry);
if (newOwner == null)
{
return null;
}
int oldIndex = oldVariable.Owner.RuntimeVariables.IndexOf(oldVariable);
int? newIndex = entry.HasEnvironmentUpdates ?
entry.EnvironmentUpdateMap.GetNewVariableIndex(oldIndex) :
oldIndex;
return newIndex.HasValue ? newOwner.RuntimeVariables[newIndex.Value] : null;
}
private bool CanApplyUpdateWhileRunning(Activity activity, bool isInNewDefinition)
{
Activity currentActivity = activity;
IdSpace rootIdSpace = activity.MemberOf;
do
{
DynamicUpdateMapEntry entry = null;
if (isInNewDefinition)
{
this.map.TryGetUpdateEntryByNewId(currentActivity.InternalId, out entry);
}
else if (currentActivity.MemberOf == rootIdSpace)
{
this.map.TryGetUpdateEntry(currentActivity.InternalId, out entry);
}
if (entry != null &&
(entry.NewActivityId < 1 ||
entry.IsRuntimeUpdateBlocked ||
entry.IsUpdateBlockedByUpdateAuthor))
{
return false;
}
currentActivity = currentActivity.Parent;
}
while (currentActivity != null && currentActivity.MemberOf == rootIdSpace);
return true;
}
private bool IsInNewDefinition(Activity activity, bool isVariableOwner = false)
{
bool result = false;
if (activity.RootActivity == this.updatedWorkflowDefinition)
{
result = true;
}
else if (activity.RootActivity == this.originalWorkflowDefinition)
{
result = false;
}
else
{
ThrowNotInDefinition(isVariableOwner,
SR.QueryVariableIsNotInDefinition,
SR.QueryActivityIsNotInDefinition);
}
// We only support either the public or the implementation IdSpace at the root of the workflow.
// The user does not have visibility into nested IdSpaces so should not be querying into them.
if (this.map.IsForImplementation)
{
if (activity.MemberOf.Owner != activity.RootActivity)
{
ThrowNotInDefinition(isVariableOwner,
SR.QueryVariableIsPublic(activity.RootActivity),
SR.QueryActivityIsPublic(activity.RootActivity));
}
}
else if (activity.MemberOf != activity.RootActivity.MemberOf)
{
ThrowNotInDefinition(isVariableOwner,
SR.QueryVariableIsInImplementation(activity.MemberOf.Owner),
SR.QueryActivityIsInImplementation(activity.MemberOf.Owner));
}
return result;
}
private bool IsInNewDefinition(Variable variable)
{
if (variable.Owner == null)
{
throw FxTrace.Exception.Argument("variable", SR.QueryVariableIsNotInDefinition);
}
if (!variable.IsPublic)
{
throw FxTrace.Exception.Argument("variable", SR.QueryVariableIsNotPublic);
}
return IsInNewDefinition(variable.Owner, true);
}
private void ThrowNotInDefinition(bool isVariableOwner, string variableMessage, string activityMessage)
{
if (isVariableOwner)
{
throw FxTrace.Exception.Argument("variable", variableMessage);
}
else
{
throw FxTrace.Exception.Argument("activity", activityMessage);
}
}
}
}
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