public RichTextViewModel()
{
Close = new SimpleCommand
{
//Publish a message with the new Text
ExecuteDelegate = x => Mediator.NotifyColleagues(ViewModelMessages.HideRichText, RichTextBoxHelper.GetText((FlowDocument)x))
};
//Receive the Text from the previous form
Mediator.Register(x => Text = x == null ? "" : x.ToString(), ViewModelMessages.ShowRichText);
}