UserElectionsFragment.java

package com.rava.voting.ui;

import java.util.ArrayList;
import java.util.List;

import retrofit.Callback;
import retrofit.RetrofitError;
import retrofit.client.Response;
import android.app.ListFragment;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v4.widget.SwipeRefreshLayout.OnRefreshListener;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.ListView;

import com.rava.voting.R;
import com.rava.voting.RavaApplication;
import com.rava.voting.api.ElectionService;
import com.rava.voting.model.Election;
import com.rava.voting.model.User;
import com.rava.voting.ui.adapter.ElectionsArrayAdapter;
import com.rava.voting.utils.SettingsManager;
import com.rava.voting.utils.Utils;

public class UserElectionsFragment extends ListFragment implements
		OnRefreshListener {

	public static final String TAG = "UserElectionsFragment";

	private ElectionsArrayAdapter mAdapter;
	private SwipeRefreshLayout mRefreshLayout;

	public static UserElectionsFragment newInstance() {
		UserElectionsFragment fragment = new UserElectionsFragment();
		Bundle args = new Bundle();
		fragment.setArguments(args);
		return fragment;
	}

	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
			Bundle savedInstanceState) {
		View root = inflater.inflate(R.layout.fragment_elections, container,
				false);
		mRefreshLayout = (SwipeRefreshLayout) root
				.findViewById(R.id.swipe_container);
		mRefreshLayout.setOnRefreshListener(this);
		mRefreshLayout
				.setColorScheme(android.R.color.holo_blue_dark,
						android.R.color.holo_green_dark,
						android.R.color.holo_orange_dark,
						android.R.color.holo_red_dark);
		return root;
	}

	@Override
	public void onActivityCreated(Bundle savedInstanceState) {
		super.onActivityCreated(savedInstanceState);

		// mElections = new ArrayList<Election>();
		// mElections.add(new Election(1, "Presidental Election", "",
		// ElectionState.ONE));
		// mElections.add(new Election(1, "Best soccer player", "",
		// ElectionState.ONE));
		// mElections.add(new Election(1, "Best tennis player", "",
		// ElectionState.ZERO));
		// mElections.add(new Election(1, "Test election", "",
		// ElectionState.TWO));

		setList();
		mAdapter = new ElectionsArrayAdapter(getActivity(), 0,
				new ArrayList<Election>());
		setListAdapter(mAdapter);
		load();
	}

	@Override
	public void onListItemClick(ListView l, View v, int position, long id) {
		super.onListItemClick(l, v, position, id);
		Intent intent = new Intent(getActivity(), ElectionDetailActivity.class);
		Bundle bundle = new Bundle();
		bundle.putInt(ElectionDetailActivity.KEY_ELECTION,
				mAdapter.getItem(position).getId());
		intent.putExtras(bundle);
		startActivity(intent);
	}

	private void setList() {
		getListView().setOnScrollListener(new AbsListView.OnScrollListener() {
			@Override
			public void onScrollStateChanged(AbsListView view, int scrollState) {

			}

			@Override
			public void onScroll(AbsListView view, int firstVisibleItem,
					int visibleItemCount, int totalItemCount) {
				int topRowVerticalPosition = (getListView() == null || getListView()
						.getChildCount() == 0) ? 0 : getListView()
						.getChildAt(0).getTop();
				mRefreshLayout.setEnabled(topRowVerticalPosition >= 0);
			}
		});

	}

	private void load() {
		mRefreshLayout.setRefreshing(true);
		User user = SettingsManager.getUser();
		if (user == null) {
			mRefreshLayout.setRefreshing(false);
			mAdapter.setElections(new ArrayList<Election>());
			return;
		}
		RavaApplication app = (RavaApplication) getActivity().getApplication();
		ElectionService electionService = app.getElectionService();
		electionService.getUserCreatedElections(user.getId(),
				new Callback<List<Election>>() {

					@Override
					public void success(List<Election> elections,
							Response response) {
						mRefreshLayout.setRefreshing(false);
						mAdapter.setElections(elections);
					}

					@Override
					public void failure(RetrofitError error) {
						mRefreshLayout.setRefreshing(false);
						Utils.parseError(error, getActivity());
					}
				});
	}

	@Override
	public void onRefresh() {
		load();
	}

}