net.bible.android.device.ProgressNotificationManager.java Source code

Introduction

Here is the source code for net.bible.android.device.ProgressNotificationManager.java

Source

package net.bible.android.device;

import java.util.HashMap;
import java.util.Map;

import net.bible.android.BibleApplication;
import net.bible.android.SharedConstants;
import net.bible.android.activity.R;
import net.bible.android.view.activity.download.ProgressStatus;

import org.apache.commons.lang.StringUtils;
import org.crosswire.common.progress.JobManager;
import org.crosswire.common.progress.Progress;
import org.crosswire.common.progress.WorkEvent;
import org.crosswire.common.progress.WorkListener;

import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.util.Log;
import android.widget.RemoteViews;

/**Show all Progress status
 * see BibleDesktop JobsProgressBar for example use
 * 
 * @author Martin Denham [mjdenham at gmail dot com]
 * @see gnu.lgpl.License for license details.<br>
 *      The copyright to this program is held by it's author.
 */
public class ProgressNotificationManager {
    private static final String TAG = "ProgressNotificationManager";

    Map<Progress, Notification> progressMap = new HashMap<Progress, Notification>();

    private WorkListener workListener;

    private NotificationManager androidNotificationManager = getNotificationManager();

    private static final ProgressNotificationManager singleton = new ProgressNotificationManager();

    // only one instance initialised at startup to monitor for JSword Progress events and map them to Android Notifications
    private ProgressNotificationManager() {
    }

    public static ProgressNotificationManager getInstance() {
        return singleton;
    }

    public void initialise() {
        Log.i(TAG, "Initializing");

        workListener = new WorkListener() {

            @Override
            public void workProgressed(WorkEvent ev) {
                final Progress prog = ev.getJob();
                final int done = prog.getWork();

                // updating notifications is really slow so we only update the notification manager every 5%
                if (prog.isFinished() || done % 5 == 0) {
                    // compose a descriptive string showing job name and current section if relevant
                    String status = StringUtils.left(prog.getJobName(), 50) + SharedConstants.LINE_SEPARATOR;
                    if (!StringUtils.isEmpty(prog.getSectionName())
                            && !prog.getSectionName().equalsIgnoreCase(prog.getJobName())) {
                        status += prog.getSectionName();
                    }

                    // update notification view
                    final Notification notification = findOrCreateNotification(prog);
                    notification.contentView.setProgressBar(R.id.status_progress, 100, done, false);
                    notification.contentView.setTextViewText(R.id.status_text, status);

                    // this next line is REALLY slow and is the reason we only update the notification manager every 5%
                    // inform the progress bar of updates in progress
                    androidNotificationManager.notify(prog.hashCode(), notification);

                    if (prog.isFinished()) {
                        finished(prog);
                    }
                }
            }

            @Override
            public void workStateChanged(WorkEvent ev) {
                Log.d(TAG, "WorkState changed");
                // we don't care about these events
            }
        };
        JobManager.addWorkListener(workListener);

        Log.d(TAG, "Finished Initializing");
    }

    private void finished(Progress prog) {
        Log.d(TAG, "Finished");
        androidNotificationManager.cancel(prog.hashCode());
        progressMap.remove(prog);
    }

    public void close() {
        Log.i(TAG, "Clearing Notifications");
        try {
            // clear map and all Notification objects
            for (Progress prog : progressMap.keySet()) {
                if (prog.isCancelable()) {
                    Log.i(TAG, "Cancelling job");
                    prog.cancel();
                }
                finished(prog);
            }

            // de-register from notifications
            JobManager.removeWorkListener(workListener);
        } catch (Exception e) {
            Log.e(TAG, "Error tidying up", e);
        }
    }

    /** find the Progress object in our map to the associated Notifications
     * 
     * @param prog
     * @return
     */
    private Notification findOrCreateNotification(Progress prog) {
        Notification notification = progressMap.get(prog);
        if (notification == null) {
            Log.d(TAG, "Creating Notification for progress Hash:" + prog.hashCode());
            // configure the intent
            Intent intent = new Intent(BibleApplication.getApplication(), ProgressStatus.class);
            final PendingIntent pendingIntent = PendingIntent.getActivity(BibleApplication.getApplication(), 0,
                    intent, 0);

            notification = new Notification(R.drawable.bible, prog.getJobName(), System.currentTimeMillis());
            notification.flags = notification.flags | Notification.FLAG_ONGOING_EVENT
                    | Notification.FLAG_AUTO_CANCEL;
            notification.contentView = new RemoteViews(SharedConstants.PACKAGE_NAME,
                    R.layout.progress_notification);
            notification.contentIntent = pendingIntent;
            notification.contentView.setImageViewResource(R.id.status_icon, R.drawable.bible);
            notification.contentView.setTextViewText(R.id.status_text, "");
            notification.contentView.setProgressBar(R.id.status_progress, 100, prog.getWork(), false);

            progressMap.put(prog, notification);

            androidNotificationManager.notify(prog.hashCode(), notification);
        }

        return notification;
    }

    private NotificationManager getNotificationManager() {
        // add it to the NotificationManager
        return (NotificationManager) BibleApplication.getApplication()
                .getSystemService(BibleApplication.getApplication().NOTIFICATION_SERVICE);

    }
}