/// <summary>
/// Factory method where to create ActivityManager instance,
/// this method must be called only once
/// </summary>
/// <param name="entryPoint">Application Entry point FormScreen, this might be the main screen or a splash screen.</param>
/// <returns></returns>
public static ActivityManager CreateActivityManagerInstance(BaseFormScreen entryPoint)
{
if (Instance != null)
{
throw new InvalidOperationException("Already Active Activity Manager");
}
Instance = new ActivityManager();
entryPoint.Show();
return(Instance);
}
/// <summary>
/// Internal method to remove a form from the Forms Stack.
/// This method will also display the previous active form screen.
/// </summary>
/// <param name="form">Form to be removed from stack.</param>
internal void RemoveFromStack(BaseFormScreen form)
{
this.FormStack.Remove(form);
// If there are no more active forms, stop the Application.
if (this.FormStack.Count == 0)
{
ExitThread();
return;
}
// If there are active forms, display the previous using last tracked form location.
var parentForm = this.FormStack.Last();
parentForm.StartPosition = FormStartPosition.Manual;
parentForm.Location = this.LastFormLocation;
parentForm.Show();
}
/// <summary>
/// Internal method to add a newly loaded form into the Forms Stack.
/// </summary>
/// <param name="form">Newly loaded form.</param>
internal void AddToStack(BaseFormScreen form)
{
this.FormStack.Add(form);
}