///<summary>
/// Deactivates a child whenever the specified parent is deactivated.
///</summary>
///<param name="child">The child to deactivate.</param>
///<param name="parent">The parent whose deactivation triggers the child's deactivation.</param>
public static void DeactivateWith(this IDeactivate child, IDeactivate parent)
{
EventHandler <DeactivationEventArgs> handler = null;
handler = (s, e) => {
child.Deactivate(e.WasClosed);
if (e.WasClosed)
{
parent.Deactivated -= handler;
}
};
parent.Deactivated += handler;
}
public static void RunModal(this IDeactivate item)
{
try
{
var frame = new DispatcherFrame();
item.Deactivated += (sender, e) => { frame.Continue = false; };
Dispatcher.PushFrame(frame);
}
catch (Exception ex)
{
throw new Exception("Modal frame exception. Check inner exception for details.", ex.GetBaseException());
}
}
///<summary>
/// Deactivates a child whenever the specified parent is deactivated.
///</summary>
///<param name="child">The child to deactivate.</param>
///<param name="parent">The parent whose deactivation triggers the child's deactivation.</param>
public static void DeactivateWith(this IDeactivate child, IDeactivate parent)
{
var childReference = new WeakReference(child);
EventHandler <DeactivationEventArgs> handler = null;
handler = (s, e) => {
var deactivatable = (IDeactivate)childReference.Target;
if (deactivatable == null)
{
((IDeactivate)s).Deactivated -= handler;
}
else
{
deactivatable.Deactivate(e.WasClosed);
}
};
parent.Deactivated += handler;
}
public async Task <bool> IsCancelledAsync(IDeactivate deactivate, IServiceProvider serviceProvider)
{
if (deactivate == null)
{
return(false);
}
var deactivationContext = new DeactivationContext(serviceProvider);
await deactivate.DeactivateAsync(deactivationContext);
if (deactivationContext.Cancelled)
{
CancelArgs.Cancel = true;
return(true);
}
return(false);
}
///<summary>
/// Deactivates a child whenever the specified parent is deactivated.
///</summary>
///<param name="child">The child to deactivate.</param>
///<param name="parent">The parent whose deactivation triggers the child's deactivation.</param>
public static void DeactivateWith(this IDeactivate child, IDeactivate parent)
{
var childReference = new WeakReference(child);
AsyncEventHandler <DeactivationEventArgs> handler = null;
handler = async(s, e) =>
{
var deactivatable = (IDeactivate)childReference.Target;
if (deactivatable == null)
{
((IDeactivate)s).Deactivated -= handler;
}
else
{
await deactivatable.DeactivateAsync(e.WasClosed, CancellationToken.None);
}
};
parent.Deactivated += handler;
}
/// <summary> /// Deactivates this instance. /// </summary> /// <param name="deactivate">The instance to deactivate</param> /// <param name="close">Indicates whether or not this instance is being closed.</param> /// <returns>A task that represents the asynchronous operation.</returns> public static Task DeactivateAsync(this IDeactivate deactivate, bool close) => deactivate.DeactivateAsync(close, default);
