public async Task ShowOverlayAsync(IMediaViewModel mediaModel, bool allowClosing, CancellationToken ct)
{
if (mediaModel == null)
{
throw new ArgumentNullException(nameof(mediaModel));
}
var WINDOW_HANDLE = new WindowInteropHelper(this).Handle;
var PRIMARY_SCREEN = System.Windows.Forms.Screen.PrimaryScreen;
IntPtr PREVIOUS_WINDOW_HANDLE = IntPtr.Zero;
try
{
var CANCELATION_TOKEN_SOURCE = CreateOverlayLinkedTokenSource(ct);
var CANCELATION_TOKEN = CANCELATION_TOKEN_SOURCE.Token;
var CONTENT = await Dispatcher.InvokeAsync(() =>
{
var CC = new ContentControl()
{
Content = mediaModel,
ContentTemplate = FindResource("VIDEO_PLAYER_TEMPLATE") as DataTemplate,
};
return(CC);
});
PREVIOUS_WINDOW_HANDLE = GetForegroundWindow();
if (PREVIOUS_WINDOW_HANDLE == WINDOW_HANDLE)
{
PREVIOUS_WINDOW_HANDLE = IntPtr.Zero;
}
SWP SHOW_FLAGS = SWP.SWP_NOREDRAW | SWP.SWP_ASYNCWINDOWPOS;
HWND SHOW_HWND = PREVIOUS_WINDOW_HANDLE != IntPtr.Zero ? (HWND)PREVIOUS_WINDOW_HANDLE : HWND.HWND_NOTOPMOST;
SetWindowPos(WINDOW_HANDLE,
SHOW_HWND,
0,
0,
PRIMARY_SCREEN.Bounds.Width,
PRIMARY_SCREEN.Bounds.Height,
SHOW_FLAGS);
if (await OVERLAY_LOCK.WaitAsync(TimeSpan.Zero) == true)
{
try
{
await ShowOverlayWithLockAsync(CONTENT, allowClosing, Timeout.InfiniteTimeSpan, CANCELATION_TOKEN);
}
catch
{
throw;
}
finally
{
OVERLAY_LOCK.Release();
}
}
else
{
var WAIT_HANDLE = new SemaphoreSlim(0, 1);
var CONTENT_LOCK = new ContentLock()
{
Content = CONTENT, WaitHandle = WAIT_HANDLE
};
OVERLAY_CONTENT_STACK.Push(CONTENT_LOCK);
ct.Register(async() =>
{
var NEW_STACK = OVERLAY_CONTENT_STACK.Where(o => o != CONTENT_LOCK);
OVERLAY_CONTENT_STACK = new ConcurrentStack <ContentLock>(NEW_STACK);
if (OVERLAY_CONTENT_STACK.TryPeek(out var CURRENT_LOCK))
{
await Dispatcher.InvokeAsync(() => _OVERLAY_CONTENT_HOST.Content = CURRENT_LOCK.Content);
}
});
await Dispatcher.InvokeAsync(() => _OVERLAY_CONTENT_HOST.Content = CONTENT);
await WAIT_HANDLE.WaitAsync(Timeout.InfiniteTimeSpan, CANCELATION_TOKEN);
}
}
catch
{
throw;
}
finally
{
var INSERT_AFTER = PREVIOUS_WINDOW_HANDLE != IntPtr.Zero ? (HWND)PREVIOUS_WINDOW_HANDLE : HWND.HWND_NOTOPMOST;
SetWindowPos(WINDOW_HANDLE,
INSERT_AFTER,
0,
0,
PRIMARY_SCREEN.WorkingArea.Width,
PRIMARY_SCREEN.WorkingArea.Height,
SWP.SWP_NOREDRAW | SWP.SWP_ASYNCWINDOWPOS);
}
}
public async Task <bool> ShowAcceptDialogAsync(string message, MessageDialogButtons buttons, CancellationToken ct)
{
if (string.IsNullOrWhiteSpace(message))
{
throw new ArgumentNullException(nameof(message));
}
////create view model
//var viewModel = CompositionService.GetExportedValue<IMessageDialogViewModel>();
//viewModel.Message = message;
//viewModel.Buttons = buttons;
////create view on UI thread
//var view = await Dispatcher.InvokeAsync(() => CompositionService.GetExportedValue<AcceptDialogView>());
////set data context on UI thread
//await Dispatcher.InvokeAsync(() => view.DataContext = viewModel);
//return await ShowDialogInternalAsync(view, Timeout.InfiniteTimeSpan, ct) is true;
bool result = false;
//create view model
var viewModel = CompositionService.GetExportedValue <MessageDialogViewModel>();
viewModel.Message = message;
viewModel.Buttons = buttons;
#region CREATE VIEWS
//create view on UI thread
var CONTENT = await Dispatcher.InvokeAsync(() => CompositionService.GetExportedValue <AcceptDialogViewEx>());
//set data context on UI thread
await Dispatcher.InvokeAsync(() => CONTENT.DataContext = viewModel);
#endregion
var LINKED_CTS = CreateOverlayLinkedTokenSource(ct);
var LINKED_CT = LINKED_CTS.Token;
if (await OVERLAY_LOCK.WaitAsync(TimeSpan.Zero))
{
try
{
viewModel.AcceptCommand = new SimpleCommand <object, object>((o) => true, (o) =>
{
HideCurrentOverlay(false);
result = true;
});
viewModel.CancelCommand = new SimpleCommand <object, object>((o) => true, (o) =>
{
HideCurrentOverlay(false);
result = false;
});
await ShowOverlayWithLockAsync(CONTENT, false, Timeout.InfiniteTimeSpan, LINKED_CT);
}
catch
{
throw;
}
finally
{
OVERLAY_LOCK.Release();
}
}
else
{
var WAIT_HANDLE = new SemaphoreSlim(0, 1);
var CONTENT_LOCK = new ContentLock()
{
Content = CONTENT,
WaitHandle = WAIT_HANDLE
};
OVERLAY_CONTENT_STACK.Push(CONTENT_LOCK);
viewModel.AcceptCommand = new SimpleCommand <object, object>((o) => true, (o) =>
{
try
{
WAIT_HANDLE.Release();
}
catch (SemaphoreFullException)
{
//happens sometimes when multiple calls to release are made
}
result = true;
});
viewModel.CancelCommand = new SimpleCommand <object, object>((o) => true, (o) =>
{
try
{
WAIT_HANDLE.Release();
}
catch (SemaphoreFullException)
{
//happens sometimes when multiple calls to release are made
}
result = false;
});
await Dispatcher.InvokeAsync(() =>
{
_OVERLAY_CONTENT_HOST.Content = CONTENT;
});
await WAIT_HANDLE.WaitAsync(Timeout.InfiniteTimeSpan, LINKED_CT);
OVERLAY_CONTENT_STACK.TryPop(out _);
if (OVERLAY_CONTENT_STACK.TryPeek(out var CURRENT_LOCK))
{
await Dispatcher.InvokeAsync(() => _OVERLAY_CONTENT_HOST.Content = CURRENT_LOCK.Content);
}
}
return(result);
}
