/***************************************************************************/
/// <summary>
///
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="ThisWindowVariable"></param>
/// <returns>true if the window was newly created and will need to be explicly shown.</returns>
protected bool CreateSingletonModelessWindow <T>(BoxedScalar <T> ThisWindowVariable) where T : CustomBaseWindow, new()
{
if (ThisWindowVariable.Value != null)
{
ThisWindowVariable.Value.Activate();
/// Restore a minimized window.
if (ThisWindowVariable.Value.WindowState == WindowState.Minimized)
{
ThisWindowVariable.Value.WindowState = WindowState.Normal;
}
return(false);
}
else
{
ThisWindowVariable.Value = new T();
/// This event does nothing more than set the variable to null when the window is closed.
ThisWindowVariable.Value.Closed += (new CloseSingletonModelessWindowEventDesc <T>(ThisWindowVariable)).OnClose;
ThisWindowVariable.Value.Owner = this;
ThisWindowVariable.Value.Scale = App.s_fInterfaceScaleFactor;
return(true);
}
}
/***************************************************************************/
/// <summary>
/// This function throws an exception if the window in question didn't close.
/// It assumes that the window was created with CreateSingletonModelessWindow<>().
/// </summary>
protected void TryCloseSingletonModelessWindow <T>(BoxedScalar <T> ThisWindowVariable) where T : CustomBaseWindow
{
if (ThisWindowVariable.Value != null)
{
ThisWindowVariable.Value.Activate();
ThisWindowVariable.Value.Close();
/// If the window object reference still exists, it means the OnClose event was never called, meaning it never closed.
/// And that means the window must have refused it.
if (ThisWindowVariable.Value != null)
{
throw new Exception("Window refused to close, either on its own or because of user input.");
}
}
return;
}
public CloseSingletonModelessWindowEventDesc(BoxedScalar <T> ThisWindow)
{
m_wndWindow = ThisWindow;
return;
}