using MediaBrowser.Model.Tasks; using Microsoft.Win32; using System; using System.Threading.Tasks; namespace MediaBrowser.Common.ScheduledTasks { /// <summary> /// Class SystemEventTrigger /// </summary> public class SystemEventTrigger : ITaskTrigger { /// <summary> /// Gets or sets the system event. /// </summary> /// <value>The system event.</value> public SystemEvent SystemEvent { get; set; } /// <summary> /// Stars waiting for the trigger action /// </summary> /// <param name="isApplicationStartup">if set to <c>true</c> [is application startup].</param> public void Start(bool isApplicationStartup) { switch (SystemEvent) { case SystemEvent.WakeFromSleep: SystemEvents.PowerModeChanged += SystemEvents_PowerModeChanged; break; } } /// <summary> /// Stops waiting for the trigger action /// </summary> public void Stop() { SystemEvents.PowerModeChanged -= SystemEvents_PowerModeChanged; } /// <summary> /// Handles the PowerModeChanged event of the SystemEvents control. /// </summary> /// <param name="sender">The source of the event.</param> /// <param name="e">The <see cref="PowerModeChangedEventArgs" /> instance containing the event data.</param> async void SystemEvents_PowerModeChanged(object sender, PowerModeChangedEventArgs e) { if (e.Mode == PowerModes.Resume && SystemEvent == SystemEvent.WakeFromSleep) { // This value is a bit arbitrary, but add a delay to help ensure network connections have been restored before running the task await Task.Delay(10000).ConfigureAwait(false); OnTriggered(); } } /// <summary> /// Occurs when [triggered]. /// </summary> public event EventHandler<EventArgs> Triggered; /// <summary> /// Called when [triggered]. /// </summary> private void OnTriggered() { if (Triggered != null) { Triggered(this, EventArgs.Empty); } } } }