save. didn't find a way to hook set state yet

app/src/main/AndroidManifest.xml

@@ -420,6 +420,14 @@
             android:name=".database.PeriodicExporter"
             android:enabled="true"
             android:exported="false" />
+        <receiver
+            android:name=".service.receivers.GBDeviceSystemEventReceiver"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="nodomain.freeyourgadget.gadgetbridge.systemeventcontrol" />
+            </intent-filter>
+        </receiver>
+
         <!--
             forcing the DebugActivity to portrait mode avoids crashes with the progress
             dialog when changing orientation

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

@@ -0,0 +1,29 @@
+/*  Copyright (C) 2015-2021 Andreas Shimokawa
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+
+package nodomain.freeyourgadget.gadgetbridge.deviceevents;
+
+public class GBDeviceEventDeviceSystemEvent extends GBDeviceEvent {
+    public Event event = Event.UNKNOWN;
+
+    public enum Event {
+        UNKNOWN,
+        BATTERY_FULL,
+        CONNECTED,
+        DISCONNECTED
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/impl/GBDevice.java

@@ -38,6 +38,7 @@ import java.util.List;
 
 import nodomain.freeyourgadget.gadgetbridge.GBApplication;
 import nodomain.freeyourgadget.gadgetbridge.R;
+import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventDeviceSystemEvent;
 import nodomain.freeyourgadget.gadgetbridge.model.BatteryState;
 import nodomain.freeyourgadget.gadgetbridge.model.DeviceType;
 import nodomain.freeyourgadget.gadgetbridge.model.GenericItem;

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

@@ -58,6 +58,7 @@ import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEvent;
 import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventAppInfo;
 import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventBatteryInfo;
 import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventCallControl;
+import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventDeviceSystemEvent;
 import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventDisplayMessage;
 import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventFindPhone;
 import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventFmFrequency;
@@ -76,6 +77,7 @@ import nodomain.freeyourgadget.gadgetbridge.externalevents.NotificationListener;
 import nodomain.freeyourgadget.gadgetbridge.impl.GBDevice;
 import nodomain.freeyourgadget.gadgetbridge.model.BatteryState;
 import nodomain.freeyourgadget.gadgetbridge.service.receivers.GBCallControlReceiver;
+import nodomain.freeyourgadget.gadgetbridge.service.receivers.GBDeviceSystemEventReceiver;
 import nodomain.freeyourgadget.gadgetbridge.service.receivers.GBMusicControlReceiver;
 import nodomain.freeyourgadget.gadgetbridge.util.GB;
 
@@ -183,6 +185,8 @@ public abstract class AbstractDeviceSupport implements DeviceSupport {
             handleGBDeviceEvent((GBDeviceEventUpdateDeviceState) deviceEvent);
         } else if (deviceEvent instanceof GBDeviceEventFmFrequency) {
             handleGBDeviceEvent((GBDeviceEventFmFrequency) deviceEvent);
+        } else if (deviceEvent instanceof GBDeviceEventDeviceSystemEvent) {
+            handleGBDeviceEvent((GBDeviceEventDeviceSystemEvent) deviceEvent);
         }
     }
 
@@ -241,6 +245,22 @@ public abstract class AbstractDeviceSupport implements DeviceSupport {
         }
     }
 
+    private void handleGBDeviceEvent(GBDeviceEventDeviceSystemEvent systemEvent) {
+        Context context = getContext();
+        LOG.info("Got event for DEVICE SYSTEM EVENT");
+        Intent systemEventIntent = new Intent(GBDeviceSystemEventReceiver.ACTION_SYSTEM_EVENT_CONTROL);
+        systemEventIntent.putExtra("event", systemEvent.event.ordinal());
+        systemEventIntent.putExtra(GBDevice.EXTRA_DEVICE, gbDevice);
+        systemEventIntent.setPackage(context.getPackageName());
+        context.sendBroadcast(systemEventIntent);
+        //        LOG.debug("petr setting state");
+        //        if (updateDeviceState.state == GBDevice.State.INITIALIZED ){
+        //            GBDeviceEventDeviceSystemEvent connectEvent = null;
+        //            connectEvent.event=GBDeviceEventDeviceSystemEvent.Event.CONNECTED;
+        //            evaluateGBDeviceEvent(connectEvent);
+        //        }
+    }
+
 
     private void handleGBDeviceEvent(GBDeviceEventMusicControl musicEvent) {
         Context context = getContext();

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/receivers/GBDeviceSystemEventReceiver.java

@@ -0,0 +1,70 @@
+/*  Copyright (C) 2015-2021 Andreas Shimokawa, Carsten Pfeiffer, Daniele
+    Gobbetti, Gabe Schrecker, Petr Vaněk
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.service.receivers;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.media.AudioManager;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventDeviceSystemEvent;
+import nodomain.freeyourgadget.gadgetbridge.util.GB;
+
+public class GBDeviceSystemEventReceiver extends BroadcastReceiver {
+    private static final Logger LOG = LoggerFactory.getLogger(GBDeviceSystemEventReceiver.class);
+    public static final String ACTION_SYSTEM_EVENT_CONTROL = "nodomain.freeyourgadget.gadgetbridge.systemeventcontrol";
+
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        GBDeviceEventDeviceSystemEvent.Event systemEvent = GBDeviceEventDeviceSystemEvent.Event.values()[intent.getIntExtra("event", 0)];
+        AudioManager audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
+
+        switch (systemEvent) {
+            case CONNECTED:
+                GB.createNotification("oh mine... connected!", context);
+                LOG.debug("petr connected");
+                try {
+                    audioManager.setRingerMode(AudioManager.RINGER_MODE_SILENT);
+                } catch (SecurityException e) {
+                    LOG.error("SecurityException when trying to set ringer (no permission granted :/ ?), not setting it then.");
+                }
+                break;
+            case DISCONNECTED:
+                LOG.debug("petr disconnected");
+                GB.createNotification("oh mine... disconnected!", context);
+                try {
+                    audioManager.setRingerMode(AudioManager.RINGER_MODE_VIBRATE);
+                } catch (SecurityException e) {
+                    LOG.error("SecurityException when trying to set ringer (no permission granted :/ ?), not setting it then.");
+                }
+                break;
+            case BATTERY_FULL:
+                GB.createNotification("battery full!", context);
+                break;
+            default:
+                return;
+        }
+
+
+    }
+
+
+}