mcs/class/referencesource/System.Activities.Presentation/System.Activities.Presentation/System/Activities/Presentation/Base/Interaction/Services/ModelChangeInfoImpl.cs

   1 //----------------------------------------------------------------
   2 // <copyright company="Microsoft Corporation">
   3 //     Copyright (c) Microsoft Corporation.  All rights reserved.
   4 // </copyright>
   5 //----------------------------------------------------------------
   6
   7 namespace System.Activities.Presentation.Services
   8 {
   9     using System.Activities.Presentation.Model;
  10
  11     internal class ModelChangeInfoImpl : ModelChangeInfo
  12     {
  13         private ModelChangeType modelChangeType;
  14         private ModelItem subject;
  15         private string propertyName;
  16         private ModelItem key;
  17         private ModelItem oldValue;
  18         private ModelItem value;
  19
  20         private ModelChangeInfoImpl(ModelChangeType modelChangeType, ModelItem subject, string propertyName, ModelItem key, ModelItem oldValue, ModelItem value)
  21         {
  22             this.modelChangeType = modelChangeType;
  23             this.subject = subject;
  24             this.propertyName = propertyName;
  25             this.key = key;
  26             this.oldValue = oldValue;
  27             this.value = value;
  28         }
  29
  30         public override ModelChangeType ModelChangeType
  31         {
  32             get { return this.modelChangeType; }
  33         }
  34
  35         public override ModelItem Subject
  36         {
  37             get { return this.subject; }
  38         }
  39
  40         public override string PropertyName
  41         {
  42             get { return this.propertyName; }
  43         }
  44
  45         public override ModelItem Key
  46         {
  47             get { return this.key; }
  48         }
  49
  50         public override ModelItem OldValue
  51         {
  52             get { return this.oldValue; }
  53         }
  54
  55         public override ModelItem Value
  56         {
  57             get { return this.value; }
  58         }
  59
  60         public static ModelChangeInfoImpl CreatePropertyChanged(ModelItem subject, string propertyName, ModelItem oldValue, ModelItem newValue)
  61         {
  62             return new ModelChangeInfoImpl(ModelChangeType.PropertyChanged, subject, propertyName, null, oldValue, newValue);
  63         }
  64
  65         public static ModelChangeInfoImpl CreateCollectionItemAdded(ModelItem subject, ModelItem item)
  66         {
  67             return new ModelChangeInfoImpl(ModelChangeType.CollectionItemAdded, subject, null, null, null, item);
  68         }
  69
  70         public static ModelChangeInfoImpl CreateCollectionItemRemoved(ModelItem subject, ModelItem item)
  71         {
  72             return new ModelChangeInfoImpl(ModelChangeType.CollectionItemRemoved, subject, null, null, null, item);
  73         }
  74
  75         public static ModelChangeInfoImpl CreateDictionaryKeyValueAdded(ModelItem subject, ModelItem key, ModelItem value)
  76         {
  77             return new ModelChangeInfoImpl(ModelChangeType.DictionaryKeyValueAdded, subject, null, key, null, value);
  78         }
  79
  80         public static ModelChangeInfoImpl CreateDictionaryKeyValueRemoved(ModelItem subject, ModelItem key, ModelItem value)
  81         {
  82             return new ModelChangeInfoImpl(ModelChangeType.DictionaryKeyValueRemoved, subject, null, key, null, value);
  83         }
  84
  85         public static ModelChangeInfoImpl CreateDictionaryValueChanged(ModelItem subject, ModelItem key, ModelItem oldValue, ModelItem newValue)
  86         {
  87             return new ModelChangeInfoImpl(ModelChangeType.DictionaryValueChanged, subject, null, key, oldValue, newValue);
  88         }
  89     }
  90 }