private void ValidateMenuBeforeStarting(Menu menu)
{
//Can't start a menu if there's no activity running.
if (!HasActivityRunning())
{
throw new Exception("Unable to start Menu : no Activity is currently running.");
}
//Can't start a menu if it's allways visible
if (menu.IsAlwaysVisible())
{
throw new Exception("Unable to start Menu : it is allways visible.");
}
//Can't start menu if it's not part of the current activity.
StackedActivity currentActivity = GetCurrentActivity();
StackedMenu stackedMenu = currentActivity.GetMenu(menu);
if (stackedMenu == null)
{
throw new Exception("Unable to start Menu : it is not part of the current Activity.");
}
//Can't start menu if it's allready started
if (menuStack.Contains(stackedMenu))
{
throw new Exception("Unable to start Menu : it is already running.");
}
}
private void PushMenu(Menu menu, object[] parameters)
{
if (menu.IsAlwaysVisible())
{
throw new ArgumentException("Unable to start Menu : menu is allways visible.");
}
if (!HasActivityRunning())
{
throw new ArgumentException("Unable to start Menu : no activity running.");
}
StackedActivity currentActivity = GetCurrentActivity();
StackedMenu stackedMenu = currentActivity.GetMenu(menu);
if (stackedMenu == null)
{
throw new ArgumentException("Unable to start Menu : menu is not part of the current activity.");
}
stackedMenu.SetParameters(parameters);
menuStack.Push(stackedMenu);
}
