developer/VSSDK/Samples/Completion_Tooltip_Customization/C#/CompletionTooltipCustomization.cs

   1 //***************************************************************************
   2 //
   3 //    Copyright (c) Microsoft Corporation. All rights reserved.
   4 //    This code is licensed under the Visual Studio SDK license terms.
   5 //    THIS CODE IS PROVIDED *AS IS* WITHOUT WARRANTY OF
   6 //    ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING ANY
   7 //    IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR
   8 //    PURPOSE, MERCHANTABILITY, OR NON-INFRINGEMENT.
   9 //
  10 //***************************************************************************
  11
  12 using System.ComponentModel.Composition;
  13 using System.Globalization;
  14 using System.Windows;
  15 using System.Windows.Controls;
  16 using Microsoft.VisualStudio.Language.Intellisense;
  17 using Microsoft.VisualStudio.Utilities;
  18
  19 namespace CompletionTooltipCustomization
  20 {
  21     internal class CompletionTooltipCustomization : TextBlock
  22     {
  23         ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  24         #region MEF Exports
  25
  26         [Export(typeof(IUIElementProvider<Completion, ICompletionSession>))]
  27         [Name("SampleCompletionTooltipCustomization")]
  28         //Roslyn is the default Tooltip Provider. We must override it if we wish to use custom tooltips
  29         [Order(Before = "RoslynToolTipProvider")]
  30         [ContentType("text")]
  31         internal class CompletionTooltipCustomizationProvider : IUIElementProvider<Completion, ICompletionSession>
  32         {
  33             public UIElement GetUIElement(Completion itemToRender, ICompletionSession context, UIElementType elementType)
  34             {
  35                 if (elementType == UIElementType.Tooltip)
  36                 {
  37                     return new CompletionTooltipCustomization(itemToRender);
  38                 }
  39                 else
  40                 {
  41                     return null;
  42                 }
  43             }
  44         }
  45
  46         #endregion
  47
  48         ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  49         #region Constructors
  50
  51         /// <summary>
  52         /// Custom constructor enables us to modify the text values of the tooltip. In this case, we are just modifying the font style and size
  53         /// </summary>
  54         /// <param name="completion">The tooltip to be modified</param>
  55         internal CompletionTooltipCustomization(Completion completion)
  56         {
  57             Text = string.Format(CultureInfo.CurrentCulture, "{0}: {1}", completion.DisplayText, completion.Description);
  58             FontSize = 24;
  59             FontStyle = FontStyles.Italic;
  60         }
  61
  62         #endregion
  63     }
  64 }