[Answered] Detecting tab switches in the Astronaut Complex

[JonDahm]

Is there any way to detect when the users switch tabs in the Astronaut Complex between available, assigned, and KIA kerbals? I can't find any hooks to execute code whenever the tab switches, and I really don't want to have to poll in an OnGUI method.

Edited June 20, 2015 by JonDahm
Marking as answered.

[xEvilReeperx]

You can build yourself a way in. This example attaches a simple MonoBehaviour to each list which invokes a callback when MonoBehaviour.OnEnable is called:

public class ListenerInstaller : MonoBehaviour
{
    public Action<AstronautComplexTest.Panel> CallbackAction;

    private class ListenForOnEnable : MonoBehaviour
    {
        public Callback Callback;
        private void OnEnable() { if (Callback != null) Callback(); }
    }


    private void Start()
    {
        if (CallbackAction == null)
        {
            Debug.LogError("No CallbackAction set");
            return;
        }

        AddCallbackToPanel("panel_available", AstronautComplexTest.Panel.Available);
        AddCallbackToPanel("panel_assigned", AstronautComplexTest.Panel.Assigned);
        AddCallbackToPanel("panel_kia", AstronautComplexTest.Panel.Missing);

        CallbackAction(AstronautComplexTest.Panel.Available);

        Destroy(this);
    }


    private void AddCallbackToPanel(string panelName, AstronautComplexTest.Panel which)
    {
        var panel = FindPanel(panelName);
        if (panel == null)
        {
            Debug.LogError("Couldn't find a panel called " + panelName);
            return;
        }

        panel.gameObject.AddComponent<ListenForOnEnable>().Callback = () => CallbackAction(which);
    }


    private UIPanel FindPanel(string name)
    {
        return GetComponentsInChildren<UIPanel>().FirstOrDefault(p => p.name == name);
    }


    public static void Install(Action<AstronautComplexTest.Panel> callback)
    {
        var complex = UIManager.instance.gameObject.GetComponentsInChildren<CMAstronautComplex>(true).FirstOrDefault();
        if (complex == null)
        {
            Debug.LogError("Didn't find CMAstronautComplex");
            return;
        }

        complex.transform.Find("CrewPanels/panel_enlisted").gameObject.AddComponent<ListenerInstaller>().CallbackAction =
            callback;
    }
}


[KSPAddon(KSPAddon.Startup.SpaceCentre, false)]
public class AstronautComplexTest : MonoBehaviour
{
    public enum Panel
    {
        Available,
        Assigned,
        Missing
    }


    private void Start()
    {
        ListenerInstaller.Install(OnActivePanelChanged);
    }


    private void OnActivePanelChanged(Panel which)
    {
        Debug.LogWarning("Panel changed to " + which);
    }
}

[JonDahm]

Thank you so much, EvilReeper! That worked perfectly!