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// ---------------------------------------------------------------------------
// Copyright (C) 2006 Microsoft Corporation All Rights Reserved
// ---------------------------------------------------------------------------
#define CODE_ANALYSIS
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics.CodeAnalysis;
using System.Workflow.ComponentModel;
namespace System.Workflow.Activities.Rules
{
#region class RuleDefinitions
public sealed class RuleDefinitions : IWorkflowChangeDiff
{
[SuppressMessage("Microsoft.Security", "CA2104:DoNotDeclareReadOnlyMutableReferenceTypes")]
public static readonly DependencyProperty RuleDefinitionsProperty = DependencyProperty.RegisterAttached("RuleDefinitions", typeof(RuleDefinitions), typeof(RuleDefinitions), new PropertyMetadata(null, DependencyPropertyOptions.Metadata, new GetValueOverride(OnGetRuleConditions), null, new Attribute[] { new DesignerSerializationVisibilityAttribute(DesignerSerializationVisibility.Hidden) }));
private RuleConditionCollection conditions;
private RuleSetCollection ruleSets;
private bool runtimeInitialized;
[NonSerialized]
private object syncLock = new object();
[DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
public RuleConditionCollection Conditions
{
get
{
if (this.conditions == null)
this.conditions = new RuleConditionCollection();
return conditions;
}
}
[DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
public RuleSetCollection RuleSets
{
get
{
if (this.ruleSets == null)
this.ruleSets = new RuleSetCollection();
return this.ruleSets;
}
}
internal static object OnGetRuleConditions(DependencyObject dependencyObject)
{
if (dependencyObject == null)
throw new ArgumentNullException("dependencyObject");
RuleDefinitions rules = dependencyObject.GetValueBase(RuleDefinitions.RuleDefinitionsProperty) as RuleDefinitions;
if (rules != null)
return rules;
Activity rootActivity = dependencyObject as Activity;
if (rootActivity.Parent == null)
{
rules = ConditionHelper.GetRuleDefinitionsFromManifest(rootActivity.GetType());
if (rules != null)
dependencyObject.SetValue(RuleDefinitions.RuleDefinitionsProperty, rules);
}
return rules;
}
internal void OnRuntimeInitialized()
{
lock (syncLock)
{
if (runtimeInitialized)
return;
Conditions.OnRuntimeInitialized();
RuleSets.OnRuntimeInitialized();
runtimeInitialized = true;
}
}
#region IWorkflowChangeDiff Members
public IList<WorkflowChangeAction> Diff(object originalDefinition, object changedDefinition)
{
RuleDefinitions originalRules = originalDefinition as RuleDefinitions;
RuleDefinitions changedRules = changedDefinition as RuleDefinitions;
if ((originalRules == null) || (changedRules == null))
return new List<WorkflowChangeAction>();
IList<WorkflowChangeAction> cdiff = Conditions.Diff(originalRules.Conditions, changedRules.Conditions);
IList<WorkflowChangeAction> rdiff = RuleSets.Diff(originalRules.RuleSets, changedRules.RuleSets);
// quick optimization -- if no condition changes, simply return the ruleset changes
if (cdiff.Count == 0)
return rdiff;
// merge ruleset changes into condition changes
for (int i = 0; i < rdiff.Count; ++i)
{
cdiff.Add(rdiff[i]);
}
return cdiff;
}
#endregion
internal RuleDefinitions Clone()
{
RuleDefinitions newRuleDefinitions = new RuleDefinitions();
if (this.ruleSets != null)
{
newRuleDefinitions.ruleSets = new RuleSetCollection();
foreach (RuleSet r in this.ruleSets)
newRuleDefinitions.ruleSets.Add(r.Clone());
}
if (this.conditions != null)
{
newRuleDefinitions.conditions = new RuleConditionCollection();
foreach (RuleCondition r in this.conditions)
newRuleDefinitions.conditions.Add(r.Clone());
}
return newRuleDefinitions;
}
}
#endregion
}
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