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494 lines
18 KiB
Java
494 lines
18 KiB
Java
/**
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* Copyright (c) 2012 Todoroo Inc
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*
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* See the file "LICENSE" for the full license governing this code.
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*/
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package com.todoroo.astrid.reminders;
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import android.app.AlarmManager;
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import android.app.PendingIntent;
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import android.content.Context;
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import android.content.Intent;
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import android.content.SharedPreferences;
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import android.content.SharedPreferences.Editor;
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import android.content.res.Resources;
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import com.todoroo.andlib.data.Property;
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import com.todoroo.andlib.data.TodorooCursor;
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import com.todoroo.andlib.service.Autowired;
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import com.todoroo.andlib.service.ContextManager;
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import com.todoroo.andlib.service.DependencyInjectionService;
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import com.todoroo.andlib.sql.Criterion;
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import com.todoroo.andlib.sql.Query;
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import com.todoroo.andlib.utility.DateUtilities;
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import com.todoroo.andlib.utility.Preferences;
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import com.todoroo.astrid.dao.TaskDao;
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import com.todoroo.astrid.dao.TaskDao.TaskCriteria;
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import com.todoroo.astrid.data.Task;
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import org.joda.time.DateTime;
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import org.tasks.R;
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import java.util.Date;
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import java.util.Random;
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import static org.tasks.date.DateTimeUtils.currentTimeMillis;
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import static org.tasks.date.DateTimeUtils.newDate;
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/**
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* Data service for reminders
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*
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* @author Tim Su <tim@todoroo.com>
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*
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*/
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public final class ReminderService {
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// --- constants
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public static final Property<?>[] NOTIFICATION_PROPERTIES = new Property<?>[] {
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Task.ID,
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Task.CREATION_DATE,
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Task.COMPLETION_DATE,
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Task.DELETION_DATE,
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Task.DUE_DATE,
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Task.REMINDER_FLAGS,
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Task.REMINDER_PERIOD,
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Task.REMINDER_LAST,
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Task.REMINDER_SNOOZE,
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Task.IMPORTANCE
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};
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/** flag for due date reminder */
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public static final int TYPE_DUE = 0;
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/** flag for overdue reminder */
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public static final int TYPE_OVERDUE = 1;
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/** flag for random reminder */
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public static final int TYPE_RANDOM = 2;
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/** flag for a snoozed reminder */
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public static final int TYPE_SNOOZE = 3;
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/** flag for an alarm reminder */
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public static final int TYPE_ALARM = 4;
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static final Random random = new Random();
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// --- instance variables
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@Autowired private TaskDao taskDao;
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private AlarmScheduler scheduler = new ReminderAlarmScheduler();
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private long now = -1; // For tracking when reminders might be scheduled all at once
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ReminderService() {
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DependencyInjectionService.getInstance().inject(this);
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setPreferenceDefaults();
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}
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// --- singleton
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private static ReminderService instance = null;
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public static synchronized ReminderService getInstance() {
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if(instance == null) {
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instance = new ReminderService();
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}
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return instance;
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}
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void clearInstance() {
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instance = null;
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}
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// --- preference handling
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private static boolean preferencesInitialized = false;
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private static final int MILLIS_PER_HOUR = 60 * 60 * 1000;
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/** Set preference defaults, if unset. called at startup */
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public void setPreferenceDefaults() {
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if(preferencesInitialized) {
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return;
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}
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Context context = ContextManager.getContext();
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SharedPreferences prefs = Preferences.getPrefs(context);
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Editor editor = prefs.edit();
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Resources r = context.getResources();
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Preferences.setIfUnset(prefs, editor, r, R.string.p_rmd_default_random_hours, 0);
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Preferences.setIfUnset(prefs, editor, r, R.string.p_rmd_persistent, true);
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editor.commit();
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preferencesInitialized = true;
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}
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// --- reminder scheduling logic
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/**
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* Schedules all alarms
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*/
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public void scheduleAllAlarms() {
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TodorooCursor<Task> cursor = getTasksWithReminders(NOTIFICATION_PROPERTIES);
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try {
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Task task = new Task();
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now = DateUtilities.now(); // Before mass scheduling, initialize now variable
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for(cursor.moveToFirst(); !cursor.isAfterLast(); cursor.moveToNext()) {
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task.readFromCursor(cursor);
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scheduleAlarm(task, false);
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}
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} catch (Exception e) {
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// suppress
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} finally {
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cursor.close();
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now = -1; // Signal done with now variable
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}
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}
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private long getNowValue() {
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// If we're in the midst of mass scheduling, use the prestored now var
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return (now == -1 ? DateUtilities.now() : now);
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}
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public static final long NO_ALARM = Long.MAX_VALUE;
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/**
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* Schedules alarms for a single task
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*/
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public void scheduleAlarm(Task task) {
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scheduleAlarm(task, true);
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}
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public void clearAllAlarms(Task task) {
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scheduler.createAlarm(task, NO_ALARM, TYPE_SNOOZE);
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scheduler.createAlarm(task, NO_ALARM, TYPE_RANDOM);
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scheduler.createAlarm(task, NO_ALARM, TYPE_DUE);
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scheduler.createAlarm(task, NO_ALARM, TYPE_OVERDUE);
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}
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/**
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* Schedules alarms for a single task
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*
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* @param shouldPerformPropertyCheck
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* whether to check if task has requisite properties
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*/
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private void scheduleAlarm(Task task, boolean shouldPerformPropertyCheck) {
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if(task == null || !task.isSaved()) {
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return;
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}
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// read data if necessary
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if(shouldPerformPropertyCheck) {
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for(Property<?> property : NOTIFICATION_PROPERTIES) {
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if(!task.containsValue(property)) {
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task = taskDao.fetch(task.getId(), NOTIFICATION_PROPERTIES);
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if(task == null) {
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return;
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}
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break;
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}
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}
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}
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// Make sure no alarms are scheduled other than the next one. When that one is shown, it
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// will schedule the next one after it, and so on and so forth.
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clearAllAlarms(task);
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if(task.isCompleted() || task.isDeleted() || !Task.USER_ID_SELF.equals(task.getUserID())) {
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return;
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}
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// snooze reminder
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long whenSnooze = calculateNextSnoozeReminder(task);
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// random reminders
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long whenRandom = calculateNextRandomReminder(task);
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// notifications at due date
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long whenDueDate = calculateNextDueDateReminder(task);
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// notifications after due date
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long whenOverdue = calculateNextOverdueReminder(task);
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// For alarms around/before now, increment the now value so the next one will be later
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if (whenDueDate <= now || whenOverdue <= now) {
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whenDueDate = now;
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whenOverdue = now;
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now += 30 * DateUtilities.ONE_MINUTE; // Prevents overdue tasks from being scheduled all at once
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}
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// if random reminders are too close to due date, favor due date
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if(whenRandom != NO_ALARM && whenDueDate - whenRandom < DateUtilities.ONE_DAY) {
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whenRandom = NO_ALARM;
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}
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// snooze trumps all
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if(whenSnooze != NO_ALARM) {
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scheduler.createAlarm(task, whenSnooze, TYPE_SNOOZE);
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}
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else if(whenRandom < whenDueDate && whenRandom < whenOverdue) {
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scheduler.createAlarm(task, whenRandom, TYPE_RANDOM);
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}
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else if(whenDueDate < whenOverdue) {
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scheduler.createAlarm(task, whenDueDate, TYPE_DUE);
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}
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else if(whenOverdue != NO_ALARM) {
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scheduler.createAlarm(task, whenOverdue, TYPE_OVERDUE);
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}
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else {
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scheduler.createAlarm(task, 0, 0);
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}
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}
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/**
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* Calculate the next alarm time for snooze.
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* <p>
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* Pretty simple - if a snooze time is in the future, we use that. If it
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* has already passed, we do nothing.
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*/
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private long calculateNextSnoozeReminder(Task task) {
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if(task.getReminderSnooze() > DateUtilities.now()) {
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return task.getReminderSnooze();
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}
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return NO_ALARM;
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}
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/**
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* Calculate the next alarm time for overdue reminders.
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* <p>
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* We schedule an alarm for after the due date (which could be in the past),
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* with the exception that if a reminder was recently issued, we move
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* the alarm time to the near future.
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*/
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private long calculateNextOverdueReminder(Task task) {
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// Uses getNowValue() instead of DateUtilities.now()
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if(task.hasDueDate() && task.getFlag(Task.REMINDER_FLAGS, Task.NOTIFY_AFTER_DEADLINE)) {
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Date due = newDate(task.getDueDate());
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if (!task.hasDueTime()) {
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due.setHours(23);
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due.setMinutes(59);
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due.setSeconds(59);
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}
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long dueDateForOverdue = due.getTime();
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long lastReminder = task.getReminderLast();
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if(dueDateForOverdue > getNowValue()) {
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return dueDateForOverdue + (long) ((0.5f + 2f * random.nextFloat()) * DateUtilities.ONE_HOUR);
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}
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if(lastReminder < dueDateForOverdue) {
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return getNowValue();
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}
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if(getNowValue() - lastReminder < 6 * DateUtilities.ONE_HOUR) {
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return getNowValue() + (long) ((2.0f +
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task.getImportance() +
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6f * random.nextFloat()) * DateUtilities.ONE_HOUR);
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}
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return getNowValue();
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}
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return NO_ALARM;
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}
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/**
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* Calculate the next alarm time for due date reminders.
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* <p>
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* This alarm always returns the due date, and is triggered if
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* the last reminder time occurred before the due date. This means it is
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* possible to return due dates in the past.
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* <p>
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* If the date was indicated to not have a due time, we read from
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* preferences and assign a time.
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*/
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long calculateNextDueDateReminder(Task task) {
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// Uses getNowValue() instead of DateUtilities.now()
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if(task.hasDueDate() && task.getFlag(Task.REMINDER_FLAGS, Task.NOTIFY_AT_DEADLINE)) {
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long dueDate = task.getDueDate();
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long lastReminder = task.getReminderLast();
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long dueDateAlarm = NO_ALARM;
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if(task.hasDueTime()) {
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dueDateAlarm = dueDate;
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} else if (DateUtilities.now() > lastReminder + DateUtilities.ONE_DAY) {
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// return notification time on this day
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Date date = new DateTime(dueDate).withMillisOfDay(Preferences.getInt(R.string.p_rmd_time, 18 * MILLIS_PER_HOUR)).toDate();
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dueDateAlarm = date.getTime();
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if (dueDate > getNowValue() && dueDateAlarm < getNowValue()) {
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// this only happens for tasks due today, cause dueDateAlarm wouldn't be in the past otherwise
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// if the default reminder is in the past, then reschedule it
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// on this day before start of quiet hours or after quiet hours
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// randomly placed in this interval
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long quietHoursStart = new DateTime().withMillisOfDay(Preferences.getInt(R.string.p_rmd_quietStart, 22 * MILLIS_PER_HOUR)).getMillis();
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Date quietHoursStartDate = newDate(quietHoursStart);
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long quietHoursEnd = new DateTime().withMillisOfDay(Preferences.getInt(R.string.p_rmd_quietEnd, 10 * MILLIS_PER_HOUR)).getMillis();
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Date quietHoursEndDate = newDate(quietHoursEnd);
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boolean quietHoursEnabled = Preferences.getBoolean(R.string.p_rmd_enable_quiet, false);
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long millisToQuiet;
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long millisToEndOfDay = dueDate - getNowValue();
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int periodDivFactor = 4;
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if(quietHoursEnabled) {
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long now = currentTimeMillis();
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if(quietHoursStart <= quietHoursEnd) {
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if(now >= quietHoursStart && now < quietHoursEnd) {
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// its quiet now, quietHoursEnd is 23 max,
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// so put the default reminder to the end of the quiethours
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date = quietHoursEndDate;
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dueDateAlarm = date.getTime();
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} else if (now < quietHoursStart) {
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// quietHours didnt start yet
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millisToQuiet = quietHoursStartDate.getTime() - getNowValue();
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long millisAfterQuiet = dueDate - quietHoursEndDate.getTime();
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// if there is more time after quiethours today, select quiethours-end for reminder
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if (millisAfterQuiet > (millisToQuiet / ((float)(1-(1/periodDivFactor))) )) {
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dueDateAlarm = quietHoursEndDate.getTime();
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} else {
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dueDateAlarm = getNowValue() + (millisToQuiet / periodDivFactor);
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}
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} else {
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// after quietHours, reuse dueDate for end of day
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dueDateAlarm = getNowValue() + (millisToEndOfDay / periodDivFactor);
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}
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} else { // wrap across 24/hour boundary
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if(now >= quietHoursStart) {
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// do nothing for the end of day, dont let it even vibrate
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dueDateAlarm = NO_ALARM;
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} else if (now < quietHoursEnd) {
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date = quietHoursEndDate;
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dueDateAlarm = date.getTime();
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} else {
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// quietHours didnt start yet
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millisToQuiet = quietHoursStartDate.getTime() - getNowValue();
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dueDateAlarm = getNowValue() + (millisToQuiet / periodDivFactor);
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}
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}
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} else {
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// Quiet hours not activated, simply schedule the reminder on 1/periodDivFactor towards the end of day
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dueDateAlarm = getNowValue() + (millisToEndOfDay / periodDivFactor);
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}
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if(dueDate > getNowValue() && dueDateAlarm < getNowValue()) {
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dueDateAlarm = dueDate;
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}
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}
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}
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if(lastReminder > dueDateAlarm) {
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return NO_ALARM;
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}
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return dueDateAlarm;
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}
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return NO_ALARM;
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}
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/**
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* Calculate the next alarm time for random reminders.
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* <p>
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* We take the last reminder time and add approximately the reminder
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* period. If it's still in the past, we set it to some time in the near
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* future.
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*/
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private long calculateNextRandomReminder(Task task) {
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long reminderPeriod = task.getReminderPeriod();
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if((reminderPeriod) > 0) {
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long when = task.getReminderLast();
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if(when == 0) {
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when = task.getCreationDate();
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}
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when += (long)(reminderPeriod * (0.85f + 0.3f * random.nextFloat()));
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if(when < DateUtilities.now()) {
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when = DateUtilities.now() + (long)((0.5f +
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6 * random.nextFloat()) * DateUtilities.ONE_HOUR);
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}
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return when;
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}
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return NO_ALARM;
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}
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// --- alarm manager alarm creation
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/**
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* Interface for testing
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*/
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public interface AlarmScheduler {
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public void createAlarm(Task task, long time, int type);
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}
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public void setScheduler(AlarmScheduler scheduler) {
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this.scheduler = scheduler;
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}
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public AlarmScheduler getScheduler() {
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return scheduler;
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}
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private static class ReminderAlarmScheduler implements AlarmScheduler {
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/**
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* Create an alarm for the given task at the given type
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*/
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@Override
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public void createAlarm(Task task, long time, int type) {
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if(task.getId() == Task.NO_ID) {
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return;
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}
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Context context = ContextManager.getContext();
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Intent intent = new Intent(context, Notifications.class);
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intent.setType(Long.toString(task.getId()));
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intent.setAction(Integer.toString(type));
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intent.putExtra(Notifications.ID_KEY, task.getId());
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intent.putExtra(Notifications.EXTRAS_TYPE, type);
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// calculate the unique requestCode as a combination of the task-id and alarm-type:
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// concatenate id+type to keep the combo unique
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String rc = String.format("%d%d", task.getId(), type);
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int requestCode;
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try {
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requestCode = Integer.parseInt(rc);
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} catch (Exception e) {
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requestCode = type;
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}
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AlarmManager am = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
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PendingIntent pendingIntent = PendingIntent.getBroadcast(context, requestCode,
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intent, 0);
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if (time == 0 || time == NO_ALARM) {
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am.cancel(pendingIntent);
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} else {
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if(time < DateUtilities.now()) {
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time = DateUtilities.now() + 5000L;
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}
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am.set(AlarmManager.RTC_WAKEUP, time, pendingIntent);
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}
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}
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}
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// --- data fetching methods
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/**
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* Gets a listing of all tasks that are active &
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* @return todoroo cursor. PLEASE CLOSE THIS CURSOR!
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*/
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private TodorooCursor<Task> getTasksWithReminders(Property<?>... properties) {
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return taskDao.query(Query.select(properties).where(Criterion.and(
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TaskCriteria.isActive(),
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TaskCriteria.ownedByMe(),
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Criterion.or(Task.REMINDER_FLAGS.gt(0), Task.REMINDER_PERIOD.gt(0)))));
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}
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}
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