internal void RemoveSecondaryWindow(WindowFrameService frameService)
{
// Shell does not allow killing the main window.
if (m_mainViewId != frameService.GetViewId())
{
RemoveWindowFromMap(frameService.GetViewId());
}
}
internal void RemoveWindow(WindowFrameService frameService)
{
// Shell does not allow killing the main window.
if (m_mainViewId != frameService.GetViewId())
{
_ = HandleViewReleaseAndRemoveWindowFromMap(frameService);
}
}
private void AddWindowToMap(WindowFrameService frameService)
{
m_windowsMapLock.EnterWriteLock();
try
{
m_secondaryWindows[frameService.GetViewId()] = frameService;
TraceLogger.GetInstance().UpdateWindowCount(Convert.ToUInt64(m_secondaryWindows.Count));
}
finally
{
m_windowsMapLock.ExitWriteLock();
}
}
private async Task HandleViewReleaseAndRemoveWindowFromMap(WindowFrameService frameService)
{
WeakReference weak = new WeakReference(this);
// Unregister the event handler of the Main Page
var frame = (Window.Current.Content as Frame);
var mainPage = (frame.Content as MainPage);
mainPage.UnregisterEventHandlers();
await frameService.HandleViewRelease();
await Task.Run(() =>
{
var that = weak.Target as App;
that.RemoveWindowFromMap(frameService.GetViewId());
}).ConfigureAwait(false /* task_continuation_context::use_arbitrary() */);
}
private async Task HandleViewReleaseAndRemoveWindowFromMap(WindowFrameService frameService)
{
WeakReference weak = new WeakReference(this);
// Unregister the event handler of the Main Page
var frame = (Window.Current.Content as Frame);
var mainPage = (frame.Content as MainPage);
mainPage.UnregisterEventHandlers();
// TODO, remove this workaround after Mica fix
// Workaround app crash caused by Mica in multi-view case.
Microsoft.UI.Xaml.Controls.BackdropMaterial.SetApplyToRootOrPageBackground(mainPage, false);
await frameService.HandleViewRelease();
await Task.Run(() =>
{
var that = weak.Target as App;
that.RemoveWindowFromMap(frameService.GetViewId());
}).ConfigureAwait(false /* task_continuation_context::use_arbitrary() */);
}