Pebble: add experimental and incomplete support for dismissing 2.x notifications

Currently this dismisses all notifications on the Phone-

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/AbstractDeviceSupport.java

@@ -22,10 +22,12 @@ import nodomain.freeyourgadget.gadgetbridge.activities.AbstractChartFragment;
 import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEvent;
 import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventAppInfo;
 import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventCallControl;
+import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventDismissNotification;
 import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventMusicControl;
 import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventScreenshot;
 import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventSleepMonitorResult;
 import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventVersionInfo;
+import nodomain.freeyourgadget.gadgetbridge.externalevents.NotificationListener;
 
 // TODO: support option for a single reminder notification when notifications could not be delivered?
 // conditions: app was running and received notifications, but device was not connected.
@@ -89,6 +91,9 @@ public abstract class AbstractDeviceSupport implements DeviceSupport {
             case SCREENSHOT:
                 handleGBDeviceEvent((GBDeviceEventScreenshot) deviceEvent);
                 break;
+            case DISMISS_NOTIFICATION:
+                handleGBDeviceEvent((GBDeviceEventDismissNotification) deviceEvent);
+                break;
             default:
                 break;
         }
@@ -189,4 +194,12 @@ public abstract class AbstractDeviceSupport implements DeviceSupport {
             nm.notify(NOTIFICATION_ID_SCREENSHOT, notif);
         }
     }
+
+    private void handleGBDeviceEvent(GBDeviceEventDismissNotification deviceEvent) {
+        Context context = getContext();
+        LOG.info("Got DISMISS_NOTIFICATION device event");
+        Intent notificationListenerIntent = new Intent(NotificationListener.ACTION_DISMISS);
+        notificationListenerIntent.putExtra("id", deviceEvent.notificationID);
+        LocalBroadcastManager.getInstance(context).sendBroadcast(notificationListenerIntent);
+    }
 }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/deviceevents/GBDeviceEvent.java

@@ -14,6 +14,7 @@ public abstract class GBDeviceEvent {
         SEND_BYTES,
         SLEEP_MONITOR_RES,
         SCREENSHOT,
+        DISMISS_NOTIFICATION,
     }
 }
 

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/deviceevents/GBDeviceEventDismissNotification.java

@@ -0,0 +1,9 @@
+package nodomain.freeyourgadget.gadgetbridge.deviceevents;
+
+public class GBDeviceEventDismissNotification extends GBDeviceEvent {
+    public int notificationID;
+
+    public GBDeviceEventDismissNotification() {
+        eventClass = EventClass.DISMISS_NOTIFICATION;
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/externalevents/NotificationListener.java

@@ -2,13 +2,17 @@ package nodomain.freeyourgadget.gadgetbridge.externalevents;
 
 import android.app.ActivityManager;
 import android.app.Notification;
+import android.content.BroadcastReceiver;
+import android.content.Context;
 import android.content.Intent;
+import android.content.IntentFilter;
 import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.os.PowerManager;
 import android.preference.PreferenceManager;
 import android.service.notification.NotificationListenerService;
 import android.service.notification.StatusBarNotification;
+import android.support.v4.content.LocalBroadcastManager;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -19,13 +23,30 @@ public class NotificationListener extends NotificationListenerService {
 
     private static final Logger LOG = LoggerFactory.getLogger(NotificationListener.class);
 
+    public static final String ACTION_DISMISS
+            = "nodomain.freeyourgadget.gadgetbridge.notificationlistener.action.dismiss";
+
+    private BroadcastReceiver mReceiver = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            String action = intent.getAction();
+            if (action.equals(ACTION_DISMISS)) {
+                NotificationListener.this.cancelAllNotifications();
+            }
+        }
+    };
+
     @Override
     public void onCreate() {
         super.onCreate();
+        IntentFilter filterLocal = new IntentFilter();
+        filterLocal.addAction(ACTION_DISMISS);
+        LocalBroadcastManager.getInstance(this).registerReceiver(mReceiver, filterLocal);
     }
 
     @Override
     public void onDestroy() {
+        LocalBroadcastManager.getInstance(this).unregisterReceiver(mReceiver);
         super.onDestroy();
     }
 
@@ -50,7 +71,6 @@ public class NotificationListener extends NotificationListenerService {
             return;
         }
 
-
         SharedPreferences sharedPrefs = PreferenceManager.getDefaultSharedPreferences(this);
         if (!sharedPrefs.getBoolean("notifications_generic_whenscreenon", false)) {
             PowerManager powermanager = (PowerManager) getSystemService(POWER_SERVICE);