private void UpdateWhatsHappeningWatermark(TwitViewModel viewModel)
{
if (viewModel.ActualTweetText.Length > 0 || this.NewTweetEdit.IsFocused)
viewModel.WhatsHappeningVisibility = Visibility.Collapsed;
else
viewModel.WhatsHappeningVisibility = Visibility.Visible;
}
private void TwitView_DataContextChanged(object sender, DependencyPropertyChangedEventArgs e)
{
if (this.DataContext == null)
return;
this.viewModel = this.DataContext as TwitViewModel;
this.InitialiseMessengerRegistrations();
this.viewModel.LoadTweetViews(true);
this.DataContextChanged -= new DependencyPropertyChangedEventHandler(this.TwitView_DataContextChanged);
}