at.ac.uniklu.mobile.sportal.DashboardLogoutProgressDialogFragment.java Source code

Introduction

Here is the source code for at.ac.uniklu.mobile.sportal.DashboardLogoutProgressDialogFragment.java

Source

/*
 * Copyright (c) 2014 Mario Guggenberger <mario.guggenberger@aau.at>
 *
 * This file is part of AAU Studentenportal.
 *
 * AAU Studentenportal is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * AAU Studentenportal is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with AAU Studentenportal.  If not, see <http://www.gnu.org/licenses/>.
 */

package at.ac.uniklu.mobile.sportal;

import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.app.DialogFragment;
import android.widget.Toast;
import at.ac.uniklu.mobile.sportal.notification.GCMStatusBroadcastCommunicator;
import at.ac.uniklu.mobile.sportal.notification.GCMUtils;
import at.ac.uniklu.mobile.sportal.service.MutingService;
import at.ac.uniklu.mobile.sportal.ui.AsyncTask;
import at.ac.uniklu.mobile.sportal.util.Analytics;
import at.ac.uniklu.mobile.sportal.util.Preferences;

public class DashboardLogoutProgressDialogFragment extends DialogFragment {

    private GCMStatusBroadcastCommunicator mGCMCommunicator;
    private AsyncTask mLogoutTask;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setRetainInstance(true); // see onDestroyView as well
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        ProgressDialog d = new ProgressDialog(getActivity());
        d.setIndeterminate(true);
        d.setCancelable(false);
        d.setMessage(getString(R.string.work_logout));
        return d;
    }

    @Override
    public void onStart() {
        super.onStart();

        if (mGCMCommunicator == null) {
            mGCMCommunicator = new GCMStatusBroadcastCommunicator() {
                @Override
                public void onReceive(Context context, Intent intent) {
                    if (intent.hasExtra(GCMStatusBroadcastCommunicator.EXTRA_GCM_UP)) {
                        runLogoutTask();
                    }
                }
            };
            /* Unregister from GCM.
             * If there's no GCM registration, immediately start the logout task... otherwise
             * wait for GCM to finish the unregistering process and then start the task (see above).
             */
            if (!GCMUtils.unregisterIfRegistered(getActivity().getApplicationContext())) {
                runLogoutTask();
            }
        }
    }

    @Override
    public void onResume() {
        super.onResume();
        mGCMCommunicator.registerReceiver(getActivity());
    }

    @Override
    public void onPause() {
        super.onPause();
        mGCMCommunicator.unregisterReceiver(getActivity());
    }

    @Override
    public void onDestroyView() {
        // http://stackoverflow.com/questions/8235080/fragments-dialogfragment-and-screen-rotation
        // http://code.google.com/p/android/issues/detail?id=17423
        if (getDialog() != null && getRetainInstance())
            getDialog().setDismissMessage(null);
        super.onDestroyView();
    }

    private void runLogoutTask() {
        if (mLogoutTask != null)
            return; // the task is already running

        // http://stackoverflow.com/a/11509669
        mLogoutTask = new AsyncTask() {

            @Override
            protected void doInBackground() throws Exception {

                // give the user the impression that something elaborate is going on :)
                Thread.sleep(2000);

                Context appContext = getActivity().getApplicationContext();

                Studentportal.getSportalClient().logout();

                // clear data
                Studentportal.clearCaches(appContext);
                Studentportal.getSportalClient().clearSessionCookie();

                // reset preferences
                Editor editor = PreferenceManager.getDefaultSharedPreferences(appContext).edit();
                Preferences.setSavePassword(editor, false);
                Preferences.setPassword(editor, null);
                Preferences.setAutomuteEnabled(appContext, editor, false);
                editor.commit();

                // stop mutingservice
                getActivity().startService(new Intent(getActivity(), MutingService.class)
                        .putExtra(MutingService.ACTION, MutingService.ACTION_TURN_OFF));
            }

            @Override
            protected void onPostExecute() {
                dismiss();
            }

            @Override
            protected void onException(Exception e) {
                Analytics.onError(Analytics.ERROR_LOGOUT_FAILED, e);
                Toast.makeText(getActivity(), R.string.error_logout_failed, Toast.LENGTH_SHORT).show();
            }

            @Override
            protected void onSuccess() {
                Analytics.onEvent(Analytics.EVENT_LOGOUT);
                getActivity().finish();
            }
        };
        mLogoutTask.execute();
    }
}