1 files changed, 173 insertions, 0 deletions
diff --git a/src/com/android/cellbroadcastreceiver/CellBroadcastAlertReminder.java b/src/com/android/cellbroadcastreceiver/CellBroadcastAlertReminder.java
new file mode 100644
index 00000000..e4cae6c1
--- /dev/null
+++ b/src/com/android/cellbroadcastreceiver/CellBroadcastAlertReminder.java
@@ -0,0 +1,173 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.cellbroadcastreceiver;
+
+import android.app.AlarmManager;
+import android.app.PendingIntent;
+import android.app.Service;
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.media.Ringtone;
+import android.media.RingtoneManager;
+import android.net.Uri;
+import android.os.IBinder;
+import android.os.SystemClock;
+import android.preference.PreferenceManager;
+import android.util.Log;
+
+import static com.android.cellbroadcastreceiver.CellBroadcastReceiver.DBG;
+
+/**
+ * Manages alert reminder notification.
+ */
+public class CellBroadcastAlertReminder extends Service {
+    private static final String TAG = "CellBroadcastAlertReminder";
+
+    /** Action to wake up and play alert reminder sound. */
+    static final String ACTION_PLAY_ALERT_REMINDER = "ACTION_PLAY_ALERT_REMINDER";
+
+    /**
+     * Pending intent for alert reminder. This is static so that we don't have to start the
+     * service in order to cancel any pending reminders when user dismisses the alert dialog.
+     */
+    private static PendingIntent sPlayReminderIntent;
+
+    /**
+     * Alert reminder for current ringtone being played.
+     */
+    private static Ringtone sPlayReminderRingtone;
+
+    @Override
+    public IBinder onBind(Intent intent) {
+        return null;
+    }
+
+    @Override
+    public int onStartCommand(Intent intent, int flags, int startId) {
+        // No intent or unrecognized action; tell the system not to restart us.
+        if (intent == null || !ACTION_PLAY_ALERT_REMINDER.equals(intent.getAction())) {
+            stopSelf();
+            return START_NOT_STICKY;
+        }
+
+        log("playing alert reminder");
+        playAlertReminderSound();
+
+        if (queueAlertReminder(this, false)) {
+            return START_STICKY;
+        } else {
+            log("no reminders queued");
+            stopSelf();
+            return START_NOT_STICKY;
+        }
+    }
+
+    /**
+     * Use the RingtoneManager to play the alert reminder sound.
+     */
+    private void playAlertReminderSound() {
+        Uri notificationUri = RingtoneManager.getDefaultUri(
+                RingtoneManager.TYPE_NOTIFICATION | RingtoneManager.TYPE_ALARM);
+        if (notificationUri == null) {
+            loge("Can't get URI for alert reminder sound");
+            return;
+        }
+        Ringtone r = RingtoneManager.getRingtone(this, notificationUri);
+        if (r != null) {
+            log("playing alert reminder sound");
+            r.play();
+        } else {
+            loge("can't get Ringtone for alert reminder sound");
+        }
+    }
+
+    /**
+     * Helper method to start the alert reminder service to queue the alert reminder.
+     * @return true if a pending reminder was set; false if there are no more reminders
+     */
+    static boolean queueAlertReminder(Context context, boolean firstTime) {
+        // Stop any alert reminder sound and cancel any previously queued reminders.
+        cancelAlertReminder();
+
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+        String prefStr = prefs.getString(CellBroadcastSettings.KEY_ALERT_REMINDER_INTERVAL, null);
+
+        if (prefStr == null) {
+            if (DBG) log("no preference value for alert reminder");
+            return false;
+        }
+
+        int interval;
+        try {
+            interval = Integer.valueOf(prefStr);
+        } catch (NumberFormatException ignored) {
+            loge("invalid alert reminder interval preference: " + prefStr);
+            return false;
+        }
+
+        if (interval == 0 || (interval == 1 && !firstTime)) {
+            return false;
+        }
+        if (interval == 1) {
+            interval = 2;   // "1" = one reminder after 2 minutes
+        }
+
+        if (DBG) log("queueAlertReminder() in " + interval + " minutes");
+
+        Intent playIntent = new Intent(context, CellBroadcastAlertReminder.class);
+        playIntent.setAction(ACTION_PLAY_ALERT_REMINDER);
+        sPlayReminderIntent = PendingIntent.getService(context, 0, playIntent,
+                PendingIntent.FLAG_UPDATE_CURRENT);
+
+        AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
+        if (alarmManager == null) {
+            loge("can't get Alarm Service");
+            return false;
+        }
+
+        // remind user after 2 minutes or 15 minutes
+        long triggerTime = SystemClock.elapsedRealtime() + (interval * 60000);
+        alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, triggerTime, sPlayReminderIntent);
+        return true;
+    }
+
+    /**
+     * Stops alert reminder and cancels any queued reminders.
+     */
+    static void cancelAlertReminder() {
+        if (DBG) log("cancelAlertReminder()");
+        if (sPlayReminderRingtone != null) {
+            if (DBG) log("stopping play reminder ringtone");
+            sPlayReminderRingtone.stop();
+            sPlayReminderRingtone = null;
+        }
+        if (sPlayReminderIntent != null) {
+            if (DBG) log("canceling pending play reminder intent");
+            sPlayReminderIntent.cancel();
+            sPlayReminderIntent = null;
+        }
+    }
+
+    private static void log(String msg) {
+        Log.d(TAG, msg);
+    }
+
+    private static void loge(String msg) {
+        Log.e(TAG, msg);
+    }
+}