// 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;
 
namespace Microsoft.CodeAnalysis.Editor.Shared.Tagging;
 
internal abstract class AbstractTaggerEventSource : ITaggerEventSource
{
    private bool _paused;
 
    protected AbstractTaggerEventSource()
    {
    }
 
    public abstract void Connect();
    public abstract void Disconnect();
 
    public event EventHandler<TaggerEventArgs>? Changed;
 
    protected void RaiseChanged()
    {
        if (!_paused)
            this.Changed?.Invoke(this, TaggerEventArgs.Empty);
    }
 
    public void Pause()
    {
        _paused = true;
    }
 
    public void Resume()
    {
        _paused = false;
    }
}