PasswordEntryListFragment.java

package com.example.passrepo;

import android.app.Activity;
import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import com.example.passrepo.events.PasswordListUpdatedEvent;
import com.example.passrepo.events.SearchQueryUpdatedEvent;
import com.example.passrepo.model.Model;
import com.example.passrepo.model.PasswordEntry;
import com.squareup.otto.Bus;
import com.squareup.otto.Subscribe;

public class PasswordEntryListFragment extends ListFragment {

    private static final String STATE_ACTIVATED_POSITION = "activated_position";

    private Callbacks mCallbacks = sDummyCallbacks;
    private int mActivatedPosition = ListView.INVALID_POSITION;

    private final Bus bus;
    private ArrayAdapter<PasswordEntry> listAdapter;

    public interface Callbacks {
        public void onItemSelected(String id);
    }

    private static Callbacks sDummyCallbacks = new Callbacks() {
        @Override
        public void onItemSelected(String id) {
        }
    };

    public PasswordEntryListFragment() {
        bus = BusWrapper.globalBus;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        listAdapter = new ArrayAdapter<PasswordEntry>(getActivity(),
                android.R.layout.simple_list_item_activated_1,
                android.R.id.text1,
                Model.currentModel.getPasswordEntries());
        setListAdapter(listAdapter);
    }

    @Override
    public void onViewCreated(View view, Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        if (savedInstanceState != null && savedInstanceState
                .containsKey(STATE_ACTIVATED_POSITION)) {
            setActivatedPosition(savedInstanceState.getInt(STATE_ACTIVATED_POSITION));
        }
    }

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        if (!(activity instanceof Callbacks)) {
            throw new IllegalStateException("Activity must implement fragment's callbacks.");
        }

        mCallbacks = (Callbacks) activity;

        bus.register(this);
    }

    @Override
    public void onDetach() {
        super.onDetach();
        mCallbacks = sDummyCallbacks;
        bus.unregister(this);
    }

    @Override
    public void onListItemClick(ListView listView, View view, int position, long id) {
        super.onListItemClick(listView, view, position, id);

        mCallbacks.onItemSelected(listAdapter.getItem(position).id);
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        if (mActivatedPosition != ListView.INVALID_POSITION) {
            outState.putInt(STATE_ACTIVATED_POSITION, mActivatedPosition);
        }
    }

    public void setActivateOnItemClick(boolean activateOnItemClick) {
        getListView().setChoiceMode(activateOnItemClick
                ? ListView.CHOICE_MODE_SINGLE
                : ListView.CHOICE_MODE_NONE);
    }

    public void setActivatedPosition(int position) {
        if (position == ListView.INVALID_POSITION) {
            getListView().setItemChecked(mActivatedPosition, false);
        } else {
            getListView().setItemChecked(position, true);
        }

        mActivatedPosition = position;
    }

    @Subscribe
    public void filterVisibleItems(SearchQueryUpdatedEvent event) {
        listAdapter.getFilter().filter(event.currentQuery);
    }

    @Subscribe
    public void refreshListData(PasswordListUpdatedEvent event) {
        listAdapter.notifyDataSetChanged();
    }
}