allow to toggle direct mentions notifications in muted chats

src/main/java/com/b44t/messenger/DcContext.java

@@ -86,6 +86,7 @@ public class DcContext {
     public final static int DC_CONNECTIVITY_CONNECTED = 4000;
 
     private static final String CONFIG_ACCOUNT_ENABLED = "ui.enabled";
+    private static final String CONFIG_MENTION_NOTIF_ENABLED = "ui.notify_mentions";
 
     // when using DcAccounts, use DcAccounts.addAccount() instead
     public DcContext(String osName, String dbfile) {
@@ -226,6 +227,14 @@ public class DcContext {
       }
     }
 
+    public boolean isMentionsEnabled() {
+      return !"0".equals(getConfig(CONFIG_MENTION_NOTIF_ENABLED));
+    }
+
+    public void setMentionsEnabled(boolean enabled) {
+      setConfigInt(CONFIG_MENTION_NOTIF_ENABLED, enabled? 1 : 0);
+    }
+
     public String getName() {
       String displayname = getConfig("displayname");
       if (displayname.isEmpty()) {

src/main/java/org/thoughtcrime/securesms/notifications/NotificationCenter.java

@@ -416,6 +416,7 @@ public class NotificationCenter {
             DcContext dcContext = context.dcAccounts.getAccount(accountId);
             int chatId = dcChat.getId();
             ChatData chatData = new ChatData(accountId, chatId);
+            isMention = isMention && dcContext.isMentionsEnabled();
 
             if (dcContext.isMuted() || (!isMention &&  dcChat.isMuted())) {
                 return;

src/main/java/org/thoughtcrime/securesms/preferences/NotificationsPreferenceFragment.java

@@ -36,6 +36,7 @@ public class NotificationsPreferenceFragment extends ListSummaryPreferenceFragme
 
   private CheckBoxPreference ignoreBattery;
   private CheckBoxPreference notificationsEnabled;
+  private CheckBoxPreference mentionNotifEnabled;
 
   @Override
   public void onCreate(Bundle paramBundle) {
@@ -99,6 +100,13 @@ public class NotificationsPreferenceFragment extends ListSummaryPreferenceFragme
       dcContext.setMuted(!enabled);
       return true;
     });
+
+    mentionNotifEnabled = this.findPreference("pref_enable_mention_notifications");
+    mentionNotifEnabled.setOnPreferenceChangeListener((preference, newValue) -> {
+      boolean enabled = (Boolean) newValue;
+      dcContext.setMentionsEnabled(enabled);
+      return true;
+    });
   }
 
   @Override
@@ -114,6 +122,7 @@ public class NotificationsPreferenceFragment extends ListSummaryPreferenceFragme
     // update ignoreBattery in onResume() to reflects changes done in the system settings
     ignoreBattery.setChecked(isIgnoringBatteryOptimizations());
     notificationsEnabled.setChecked(!dcContext.isMuted());
+    mentionNotifEnabled.setChecked(dcContext.isMentionsEnabled());
   }
 
   @Override