/// <summary>
/// Opens a new window on it's own thread and shows it.
/// </summary>
/// <remarks>
/// Make sure to access this window using Window.Dispatcher.BeginInvoke.
/// </remarks>
/// <param name="path">Optional photo to open in new window.</param>
/// <returns>The new Window.</returns>
private void OpenPhotoWindowOnNewThread(PhotoWindowData?data = null)
{
Thread thread = new Thread(() => {
PhotoWindow window = (data != null) ?
new PhotoWindow(new PhotoWindowViewModel(data)) :
new PhotoWindow();
window.Closed += (s, e) =>
window.Dispatcher.InvokeShutdown();
photoWindows.Add(window);
window.Show();
Dispatcher.Run();
});
thread.SetApartmentState(ApartmentState.STA);
thread.Start();
}
public void Add(PhotoWindow window)
{
/*
* Dispatching to window thread so that it will be in the correct thread-local collection,
* also this makes the combination of adding the window and hooking up the closed event
* effectively atomic since close and the closed event are only called on the ui thread.
*/
window.Dispatcher.BeginInvoke(() => {
LinkedList <PhotoWindow> windowsForThisThread = threadLocalWindows.Value !;
int cachedCloseState;
lock (windowsForThisThread) {
cachedCloseState = closeAllForever;
/*
* Need to check closeAllForever inside lock because we don't want
* a thread setting it and closing our thread local windows
* between this check and this add, otherwise the window will be
* added too late and not closed.
*/
if (cachedCloseState == CLOSE_FOREVER_OFF)
{
windowsForThisThread.AddLast(window);
}
}
switch (cachedCloseState)
{
case CLOSE_FOREVER_OFF:
window.Closed += WindowClosed;
break;
case CLOSE_FOREVER_ON_PERSIST:
window.Close(true);
break;
case CLOSE_FOREVER_ON_DONT_PERSIST:
window.Close(false);
break;
}
});
}
