pl.bcichecki.rms.client.android.fragments.UsersListFragment.java Source code

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Here is the source code for pl.bcichecki.rms.client.android.fragments.UsersListFragment.java

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/**
 * Project:   rms-client-android
 * File:      UsersListFragment.java
 * License: 
 *            This file is licensed under GNU General Public License version 3
 *            http://www.gnu.org/licenses/gpl-3.0.txt
 *
 * Copyright: Bartosz Cichecki [ cichecki.bartosz@gmail.com ]
 * Date:      30-12-2012
 */

package pl.bcichecki.rms.client.android.fragments;

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

import org.apache.http.HttpStatus;
import org.apache.http.client.HttpResponseException;

import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.util.Log;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.ListView;
import android.widget.Toast;

import com.google.gson.reflect.TypeToken;

import pl.bcichecki.rms.client.android.R;
import pl.bcichecki.rms.client.android.dialogs.UserDetailsDialog;
import pl.bcichecki.rms.client.android.fragments.listAdapters.UsersListAdapter;
import pl.bcichecki.rms.client.android.holders.SharedPreferencesWrapper;
import pl.bcichecki.rms.client.android.holders.UserProfileHolder;
import pl.bcichecki.rms.client.android.model.impl.User;
import pl.bcichecki.rms.client.android.services.clients.restful.https.GsonHttpResponseHandler;
import pl.bcichecki.rms.client.android.services.clients.restful.impl.UsersRestClient;
import pl.bcichecki.rms.client.android.utils.AppUtils;

/**
 * @author Bartosz Cichecki
 * 
 */
public class UsersListFragment extends ListFragment {

    private static final String TAG = "UsersListFragment";

    private List<User> users = new ArrayList<User>();

    private UsersListAdapter usersListAdapter;

    private UsersRestClient usersRestClient;

    private void cancelRequests() {
        if (usersRestClient != null) {
            usersRestClient.cancelRequests(getActivity(), true);
        }
    }

    private void downloadData() {
        Log.d(TAG, "Downloading users list...");

        if (!AppUtils.checkInternetConnection(getActivity())) {
            Log.d(TAG, "There is NO network connected!");
            return;
        }

        usersRestClient.getAllUsers(new GsonHttpResponseHandler<List<User>>(new TypeToken<List<User>>() {
        }.getType(), true) {

            @Override
            public void onFailure(Throwable error, String content) {
                Log.d(TAG, "Retrieving users failed. [error=" + error + ", content=" + content + "]");
                if (error instanceof HttpResponseException) {
                    if (((HttpResponseException) error).getStatusCode() == HttpStatus.SC_UNAUTHORIZED) {
                        AppUtils.showCenteredToast(getActivity(), R.string.general_unathorized_error_message_title,
                                Toast.LENGTH_LONG);
                    } else {
                        AppUtils.showCenteredToast(getActivity(), R.string.general_unknown_error_message_title,
                                Toast.LENGTH_LONG);
                    }
                } else {
                    AppUtils.showCenteredToast(getActivity(), R.string.general_unknown_error_message_title,
                            Toast.LENGTH_LONG);
                }
            }

            @Override
            public void onFinish() {
                usersListAdapter.refresh();
                hideLoadingMessage();
                Log.d(TAG, "Retrieving users finished.");
            }

            @Override
            public void onStart() {
                Log.d(TAG, "Retrieving users started.");
                showLoadingMessage();
                users.clear();
            }

            @Override
            public void onSuccess(int statusCode, List<User> object) {
                Log.d(TAG, "Retrieving users successful. Retrieved " + object.size() + " objects.");
                users.addAll(object);
            }
        });
    }

    private void hideLoadingMessage() {
        setListShown(true);
    }

    protected void load() {
        usersRestClient = new UsersRestClient(getActivity(), UserProfileHolder.getUsername(),
                UserProfileHolder.getPassword(), SharedPreferencesWrapper.getServerRealm(),
                SharedPreferencesWrapper.getServerAddress(), SharedPreferencesWrapper.getServerPort(),
                SharedPreferencesWrapper.getWebserviceContextPath());

        downloadData();

        usersListAdapter = new UsersListAdapter(getActivity(), users);
        setListAdapter(usersListAdapter);
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        load();
    }

    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        super.onCreateOptionsMenu(menu, inflater);
        getActivity().getMenuInflater().inflate(R.menu.fragment_users_list, menu);
    }

    @Override
    public void onListItemClick(ListView l, View v, int position, long id) {
        UserDetailsDialog deviceDetailsDialog = new UserDetailsDialog();
        deviceDetailsDialog.setUser(usersListAdapter.getItem(position));
        deviceDetailsDialog.show(getFragmentManager(), TAG);

    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (item.getItemId() == R.id.fragment_users_list_menu_refresh) {
            downloadData();
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    @Override
    public void onStart() {
        super.onStart();
        setHasOptionsMenu(true);
        setEmptyText(getString(R.string.fragment_users_list_empty));
    }

    @Override
    public void onStop() {
        cancelRequests();
        super.onStop();
    }

    private void showLoadingMessage() {
        setListShown(false);
    }

}