ControlAppWidgetService.java

package com.ianhanniballake.contractiontimer.appwidget;

import android.app.IntentService;
import android.app.PendingIntent;
import android.appwidget.AppWidgetManager;
import android.content.ComponentName;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.preference.PreferenceManager;
import android.provider.BaseColumns;
import android.text.format.DateUtils;
import android.util.Log;
import android.view.View;
import android.widget.RemoteViews;

import com.ianhanniballake.contractiontimer.BuildConfig;
import com.ianhanniballake.contractiontimer.R;
import com.ianhanniballake.contractiontimer.provider.ContractionContract;
import com.ianhanniballake.contractiontimer.ui.MainActivity;
import com.ianhanniballake.contractiontimer.ui.Preferences;

/**
 * Handles updates of the 'Control' style App Widgets
 */
public class ControlAppWidgetService extends IntentService {
    private final static String TAG = ControlAppWidgetService.class.getSimpleName();
    /**
     * Identifier for this widget to be used in Analytics
     */
    private final static String WIDGET_IDENTIFIER = "widget_control";

    /**
     * Creates a new ControlAppWidgetService
     */
    public ControlAppWidgetService() {
        super(TAG);
    }

    @Override
    protected void onHandleIntent(final Intent intent) {
        if (BuildConfig.DEBUG)
            Log.d(TAG, "Updating Control App Widgets");
        final String[] projection = {BaseColumns._ID, ContractionContract.Contractions.COLUMN_NAME_START_TIME,
                ContractionContract.Contractions.COLUMN_NAME_END_TIME};
        final String selection = ContractionContract.Contractions.COLUMN_NAME_START_TIME + ">?";
        final SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
        final long averagesTimeFrame = Long.parseLong(preferences.getString(
                Preferences.AVERAGE_TIME_FRAME_PREFERENCE_KEY,
                getString(R.string.pref_average_time_frame_default)));
        final long timeCutoff = System.currentTimeMillis() - averagesTimeFrame;
        final String[] selectionArgs = {Long.toString(timeCutoff)};
        final Cursor data = getContentResolver().query(ContractionContract.Contractions.CONTENT_URI, projection,
                selection, selectionArgs, null);
        RemoteViews views;
        final String appwidgetBackground = preferences.getString(Preferences.APPWIDGET_BACKGROUND_PREFERENCE_KEY,
                getString(R.string.pref_appwidget_background_default));
        if (appwidgetBackground.equals("light"))
            views = new RemoteViews(getPackageName(), R.layout.control_appwidget_light);
        else
            views = new RemoteViews(getPackageName(), R.layout.control_appwidget_dark);
        // Add the intent to the Application Launch button
        final Intent applicationLaunchIntent = new Intent(this, MainActivity.class);
        applicationLaunchIntent.putExtra(MainActivity.LAUNCHED_FROM_WIDGET_EXTRA,
                ControlAppWidgetService.WIDGET_IDENTIFIER);
        applicationLaunchIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        final PendingIntent applicationLaunchPendingIntent = PendingIntent.getActivity(this, 0,
                applicationLaunchIntent, PendingIntent.FLAG_UPDATE_CURRENT);
        views.setOnClickPendingIntent(R.id.application_launch, applicationLaunchPendingIntent);
        // Set the average duration and frequency
        if (data != null && data.moveToFirst()) {
            double averageDuration = 0;
            double averageFrequency = 0;
            int numDurations = 0;
            int numFrequencies = 0;
            while (!data.isAfterLast()) {
                final int startTimeColumnIndex = data
                        .getColumnIndex(ContractionContract.Contractions.COLUMN_NAME_START_TIME);
                final long startTime = data.getLong(startTimeColumnIndex);
                final int endTimeColumnIndex = data
                        .getColumnIndex(ContractionContract.Contractions.COLUMN_NAME_END_TIME);
                if (!data.isNull(endTimeColumnIndex)) {
                    final long endTime = data.getLong(endTimeColumnIndex);
                    final long curDuration = endTime - startTime;
                    averageDuration = (curDuration + numDurations * averageDuration) / (numDurations + 1);
                    numDurations++;
                }
                if (data.moveToNext()) {
                    final int prevContractionStartTimeColumnIndex = data
                            .getColumnIndex(ContractionContract.Contractions.COLUMN_NAME_START_TIME);
                    final long prevContractionStartTime = data.getLong(prevContractionStartTimeColumnIndex);
                    final long curFrequency = startTime - prevContractionStartTime;
                    averageFrequency = (curFrequency + numFrequencies * averageFrequency) / (numFrequencies + 1);
                    numFrequencies++;
                }
            }
            final long averageDurationInSeconds = (long) (averageDuration / 1000);
            views.setTextViewText(R.id.average_duration, DateUtils.formatElapsedTime(averageDurationInSeconds));
            final long averageFrequencyInSeconds = (long) (averageFrequency / 1000);
            views.setTextViewText(R.id.average_frequency, DateUtils.formatElapsedTime(averageFrequencyInSeconds));
        } else {
            views.setTextViewText(R.id.average_duration, "");
            views.setTextViewText(R.id.average_frequency, "");
        }
        // Set the status of the contraction toggle button
        // Need to use a separate cursor as there could be running contractions
        // outside of the average time frame
        final Cursor allData = getContentResolver().query(ContractionContract.Contractions.CONTENT_URI, projection,
                null, null, null);
        final boolean contractionOngoing = allData != null && allData.moveToFirst()
                && allData.isNull(allData.getColumnIndex(ContractionContract.Contractions.COLUMN_NAME_END_TIME));
        final Intent toggleContractionIntent = new Intent(this, AppWidgetToggleService.class);
        toggleContractionIntent.putExtra(AppWidgetToggleService.WIDGET_NAME_EXTRA,
                ControlAppWidgetService.WIDGET_IDENTIFIER);
        final PendingIntent toggleContractionPendingIntent = PendingIntent.getService(this, 0, toggleContractionIntent,
                PendingIntent.FLAG_UPDATE_CURRENT);
        if (contractionOngoing) {
            views.setViewVisibility(R.id.contraction_toggle_on, View.VISIBLE);
            views.setOnClickPendingIntent(R.id.contraction_toggle_on, toggleContractionPendingIntent);
            views.setViewVisibility(R.id.contraction_toggle_off, View.GONE);
        } else {
            views.setViewVisibility(R.id.contraction_toggle_off, View.VISIBLE);
            views.setOnClickPendingIntent(R.id.contraction_toggle_off, toggleContractionPendingIntent);
            views.setViewVisibility(R.id.contraction_toggle_on, View.GONE);
        }
        // Close the cursors
        if (data != null)
            data.close();
        if (allData != null)
            allData.close();
        // Update the widgets
        final AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(this);
        if (intent.hasExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS))
            appWidgetManager.updateAppWidget(intent.getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS), views);
        else
            appWidgetManager.updateAppWidget(new ComponentName(this, ControlAppWidgetProvider.class), views);
    }
}