public ForegroundThreadAffinitizedObject(bool assertIsForeground = false)
{
_foregroundThreadDataWhenCreated = CurrentForegroundThreadData;
// For sanity's sake, ensure that our idea of "foreground" is the same as WPF's. But we won't assert
// anything if we haven't figured it out yet.
Contract.ThrowIfFalse(
CurrentForegroundThreadData.Kind == ForegroundThreadDataKind.Unknown ||
Application.Current == null ||
Application.Current.Dispatcher.Thread == ForegroundThread);
// ForegroundThreadAffinitizedObject might not necessarily be created on a foreground thread.
// AssertIsForeground here only if the object must be created on a foreground thread.
if (assertIsForeground)
{
AssertIsForeground();
}
}
// HACK: This is a dangerous way of establishing the 'foreground' thread affinity of an
// AppDomain. This method should be deleted in favor of forcing derivations of this type
// to either explicitly inherit WPF Dispatcher thread or provide an explicit thread
// they believe to be the foreground.
static ForegroundThreadAffinitizedObject()
{
s_fallbackForegroundThreadData = ForegroundThreadData.CreateDefault(Unknown);
}