File: Shared\Tagging\EventSources\TaggerEventSources.CompositionEventSource.cs
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Project: src\src\EditorFeatures\Core\Microsoft.CodeAnalysis.EditorFeatures.csproj (Microsoft.CodeAnalysis.EditorFeatures)
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
 
using System;
using Microsoft.CodeAnalysis.Editor.Tagging;
using Roslyn.Utilities;
 
namespace Microsoft.CodeAnalysis.Editor.Shared.Tagging;
 
internal partial class TaggerEventSources
{
    private class CompositionEventSource : ITaggerEventSource
    {
        private readonly ITaggerEventSource[] _providers;
 
        public CompositionEventSource(ITaggerEventSource[] providers)
        {
            Contract.ThrowIfNull(providers);
 
            _providers = providers;
        }
 
        public void Connect()
            => _providers.Do(p => p.Connect());
 
        public void Disconnect()
            => _providers.Do(p => p.Disconnect());
 
        public void Pause()
            => _providers.Do(p => p.Pause());
 
        public void Resume()
            => _providers.Do(p => p.Resume());
 
        public event EventHandler<TaggerEventArgs> Changed
        {
            add => _providers.Do(p => p.Changed += value);
            remove => _providers.Do(p => p.Changed -= value);
        }
    }
}