Added force sync

FAQ.md

@@ -201,6 +201,7 @@ FairEmail follows all the best practices for an email client as decribed in [thi
 * [(120) Why are new message notifications not removed on opening the app?](#user-content-faq120)
 * [(121) How are messages grouped into a conversation?](#user-content-faq121)
 * [(122) Why is the recipient name/email address show with a warning color?](#user-content-faq122)
+* [(123) What does 'force sync'?](#user-content-faq123)
 
 [I have another question.](#support)
 
@@ -2090,6 +2091,16 @@ Mostly this indicates that the message was received *via* an account with anothe
 
 <br />
 
+<a name="faq123"></a>
+**(123) What does 'force sync'?**
+
+FairEmail will wait a fixed time after connectivity changes
+and will use a logarithmic back-off time after failing to connect to an account to prevent from being locked out.
+*Force sync* will reset all timers and restart the synchronization service.
+This should not normally be used.
+
+<br />
+
 ## Support
 
 If you have another question, want to request a feature or report a bug, you can use [this forum](https://forum.xda-developers.com/android/apps-games/source-email-t3824168).

app/src/main/java/eu/faircode/email/ActivityView.java

@@ -278,12 +278,6 @@ public class ActivityView extends ActivityBilling implements FragmentManager.OnB
                 drawerLayout.closeDrawer(drawerContainer);
                 onMenuSetup();
             }
-        }, new Runnable() {
-            @Override
-            public void run() {
-                drawerLayout.closeDrawer(drawerContainer);
-                onReset();
-            }
         }));
 
         madapter.set(menus);
@@ -938,10 +932,6 @@ public class ActivityView extends ActivityBilling implements FragmentManager.OnB
         Helper.view(this, getIntentOtherApps());
     }
 
-    private void onReset() {
-        ServiceSynchronize.reset(this);
-    }
-
     private void onDebugInfo() {
         new SimpleTask<Long>() {
             @Override

app/src/main/java/eu/faircode/email/FragmentMessages.java

@@ -2488,6 +2488,8 @@ public class FragmentMessages extends FragmentBase implements SharedPreferences.
         menu.findItem(R.id.menu_select_all).setVisible(!outbox &&
                 (viewType == AdapterMessage.ViewType.UNIFIED || viewType == AdapterMessage.ViewType.FOLDER));
 
+        menu.findItem(R.id.menu_force_sync).setVisible(viewType == AdapterMessage.ViewType.UNIFIED);
+
         super.onPrepareOptionsMenu(menu);
     }
 
@@ -2562,6 +2564,10 @@ public class FragmentMessages extends FragmentBase implements SharedPreferences.
                 onMenuSelectAll();
                 return true;
 
+            case R.id.menu_force_sync:
+                onMenuForceSync();
+                return true;
+
             default:
                 return super.onOptionsItemSelected(item);
         }
@@ -2662,6 +2668,11 @@ public class FragmentMessages extends FragmentBase implements SharedPreferences.
         });
     }
 
+    private void onMenuForceSync() {
+        ServiceSynchronize.reset(getContext());
+        ToastEx.makeText(getContext(), R.string.title_executing, Toast.LENGTH_LONG).show();
+    }
+
     private void updateState(List<TupleFolderEx> folders) {
         Log.i("Folder state updated count=" + folders.size());
 

app/src/main/java/eu/faircode/email/ServiceSynchronize.java

@@ -1554,6 +1554,13 @@ public class ServiceSynchronize extends ServiceBase {
     }
 
     static void reset(Context context) {
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+        boolean enabled = prefs.getBoolean("enabled", true);
+        int pollInterval = prefs.getInt("poll_interval", 0);
+        if (!enabled || pollInterval > 0) {
+            ServiceSynchronize.sync = true;
+            oneshot = true;
+        }
         ContextCompat.startForegroundService(context,
                 new Intent(context, ServiceSynchronize.class)
                         .setAction("reset"));

app/src/main/res/menu/menu_messages.xml

@@ -94,4 +94,10 @@
         android:icon="@drawable/baseline_format_size_24"
         android:title="@string/title_select_all"
         app:showAsAction="never" />
+
+    <item
+        android:id="@+id/menu_force_sync"
+        android:icon="@drawable/baseline_sync_24"
+        android:title="@string/title_force_sync"
+        app:showAsAction="never" />
 </menu>

app/src/main/res/values/strings.xml

@@ -585,6 +585,7 @@
     <string name="title_compact">Compact view</string>
     <string name="title_zoom">Text size</string>
     <string name="title_select_all">Select all</string>
+    <string name="title_force_sync">Force sync</string>
 
     <string name="title_previous">Previous</string>
     <string name="title_next">Next</string>