mcs/class/referencesource/System.Activities.Core.Presentation/System/Activities/Core/Presentation/SwitchTryCatchDesignerHelper.cs

   1 //----------------------------------------------------------------
   2 // Copyright (c) Microsoft Corporation.  All rights reserved.
   3 //----------------------------------------------------------------
   4 namespace System.Activities.Core.Presentation
   5 {
   6     using System.Activities.Presentation;
   7     using System.Activities.Presentation.Model;
   8     using System.Activities.Presentation.View;
   9
  10     static class SwitchTryCatchDesignerHelper
  11     {
  12         public static void MakeRootDesigner(WorkflowViewElement wve)
  13         {
  14             DesignerView designerView = wve.Context.Services.GetService<DesignerView>();
  15             if (!wve.Equals(designerView.RootDesigner))
  16             {
  17                 designerView.MakeRootDesigner(wve.ModelItem);
  18             }
  19         }
  20
  21         public static void MakeParentRootDesigner<TParentType>(WorkflowViewElement wve)
  22             where TParentType : WorkflowViewElement
  23         {
  24             WorkflowViewElement view = FindParentDesigner<TParentType>(wve);
  25             if (view != null)
  26             {
  27                 MakeRootDesigner(view);
  28             }
  29         }
  30
  31         static TParentType FindParentDesigner<TParentType>(WorkflowViewElement wve)
  32             where TParentType : WorkflowViewElement
  33         {
  34             ModelItem parent = wve.ModelItem.Parent;
  35             while (parent != null)
  36             {
  37                 if (parent.View != null && parent.View is TParentType)
  38                 {
  39                     return (TParentType)parent.View;
  40                 }
  41                 parent = parent.Parent;
  42             }
  43             return null;
  44         }
  45     }
  46 }