package course.labs.fragmentslab;

import android.app.Activity;
import android.app.ListFragment;
import android.os.Build;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class FriendsFragment extends ListFragment {

    private static final String[] FRIENDS = { "ladygaga", "msrebeccablack", "taylorswift13" };
    private static final String TAG = "Lab-Fragments";

    public interface SelectionListener {
        public void onItemSelected(int position);
    }

    private SelectionListener mCallback;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // use different layout definition, depending on whether device is pre-
        // or post-honeycomb
        int layout = Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB ? android.R.layout.simple_list_item_activated_1 : android.R.layout.simple_list_item_1;
        // Set the list adapter for this ListFragment
        setListAdapter(new ArrayAdapter<String>(getActivity(), layout, FRIENDS));
    }

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        // Make sure that the hosting Activity has implemented
        // the SelectionListener callback interface. We need this
        // because when an item in this ListFragment is selected,
        // the hosting Activity's onItemSelected() method will be called.
        try {
            mCallback = (SelectionListener) activity;

        } catch (ClassCastException e) {
            throw new ClassCastException(activity.toString() + " must implement SelectionListener");
        }
    }

    // Note: ListFragments come with a default onCreateView() method.
    // For other Fragments you'll normally implement this method.
    // @Override
    //  public View onCreateView(LayoutInflater inflater, ViewGroup container,
    //  Bundle savedInstanceState)

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        Log.i(TAG, "Entered onActivityCreated()");
        // When using two-pane layout, configure the ListView to highlight the
        // selected list item
        if (isInTwoPaneMode()) {
            getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE);
        }
    }

    @Override
    public void onListItemClick(ListView l, View view, int position, long id) {
        // Notify the hosting Activity that a selection has been made.
        mCallback.onItemSelected(position);
    }

    // If there is a FeedFragment, then the layout is two-pane
    private boolean isInTwoPaneMode() {
        return getFragmentManager().findFragmentById(R.id.feed_frag) != null;
    }
}