PwrPatch

0.0.2

Reunion/Microsoft.UI.Dispatching.DispatcherQueueSynchronizationContext.cs

using System;
using System.Threading;
 
namespace Microsoft.UI.Dispatching
{
    /// <summary>
    /// DispatcherQueueSyncContext allows developers to await calls and get back onto the
    /// UI thread. Needs to be installed on the UI thread through DispatcherQueueSyncContext.SetForCurrentThread
    /// </summary>
    public class DispatcherQueueSynchronizationContext : SynchronizationContext
    {
        private readonly DispatcherQueue m_dispatcherQueue;
 
        public DispatcherQueueSynchronizationContext(DispatcherQueue dispatcherQueue)
        {
            m_dispatcherQueue = dispatcherQueue;
        }
 
        public override void Post(SendOrPostCallback d, object state)
        {
            if (d == null)
                throw new ArgumentNullException(nameof(d));
 
            m_dispatcherQueue.TryEnqueue(() => d(state));
        }
 
        public override void Send(SendOrPostCallback d, object state)
        {
            throw new NotSupportedException("Send not supported");
        }
 
        public override SynchronizationContext CreateCopy()
        {
            return new DispatcherQueueSynchronizationContext(m_dispatcherQueue);
        }
    }
}