source: branches/WebJobManager/HeuristicLab.ExtLibs/HeuristicLab.AvalonEdit/5.0.1/AvalonEdit-5.0.1/Editing/CaretWeakEventHandler.cs

// Copyright (c) 2014 AlphaSierraPapa for the SharpDevelop Team
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and associated documentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

using ICSharpCode.AvalonEdit.Utils;
using System;

namespace ICSharpCode.AvalonEdit.Editing
{
  /// <summary>
  /// Contains classes for handling weak events on the Caret class.
  /// </summary>
  public static class CaretWeakEventManager
  {
    /// <summary>
    /// Handles the Caret.PositionChanged event.
    /// </summary>
    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1034:NestedTypesShouldNotBeVisible")]
    public sealed class PositionChanged : WeakEventManagerBase<PositionChanged, Caret>
    {
      /// <inheritdoc/>
      protected override void StartListening(Caret source)
      {
        source.PositionChanged += DeliverEvent;
      }
      
      /// <inheritdoc/>
      protected override void StopListening(Caret source)
      {
        source.PositionChanged -= DeliverEvent;
      }
    }
  }
}