Added spinner to folder save

Deleting messages can take some time

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

@@ -43,6 +43,7 @@ public class FragmentFolder extends FragmentEx {
     private CheckBox cbSynchronize;
     private EditText etAfter;
     private Button btnOk;
+    private ProgressBar pbSave;
     private ProgressBar pbWait;
     private Group grpReady;
 
@@ -60,6 +61,7 @@ public class FragmentFolder extends FragmentEx {
         // Get controls
         cbSynchronize = view.findViewById(R.id.cbSynchronize);
         etAfter = view.findViewById(R.id.etAfter);
+        pbSave = view.findViewById(R.id.pbSave);
         btnOk = view.findViewById(R.id.btnOk);
         pbWait = view.findViewById(R.id.pbWait);
         grpReady = view.findViewById(R.id.grpReady);
@@ -68,6 +70,7 @@ public class FragmentFolder extends FragmentEx {
             @Override
             public void onClick(View v) {
                 btnOk.setEnabled(false);
+                pbSave.setVisibility(View.VISIBLE);
 
                 Bundle args = new Bundle();
                 args.putLong("id", id);
@@ -79,6 +82,7 @@ public class FragmentFolder extends FragmentEx {
         });
 
         // Initialize
+        pbSave.setVisibility(View.GONE);
         grpReady.setVisibility(View.GONE);
         pbWait.setVisibility(View.VISIBLE);
 
@@ -152,6 +156,7 @@ public class FragmentFolder extends FragmentEx {
             getLoaderManager().destroyLoader(loader.getId());
 
             btnOk.setEnabled(true);
+            pbSave.setVisibility(View.GONE);
 
             if (ex == null)
                 getFragmentManager().popBackStack();

app/src/main/res/layout/fragment_folder.xml

@@ -53,6 +53,17 @@
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@id/etAfter" />
 
+        <ProgressBar
+            android:id="@+id/pbSave"
+            style="@style/Base.Widget.AppCompat.ProgressBar"
+            android:layout_width="24dp"
+            android:layout_height="24dp"
+            android:layout_marginStart="12dp"
+            android:indeterminate="true"
+            app:layout_constraintBottom_toBottomOf="@id/btnOk"
+            app:layout_constraintStart_toEndOf="@id/btnOk"
+            app:layout_constraintTop_toTopOf="@id/btnOk" />
+
         <ProgressBar
             android:id="@+id/pbWait"
             style="@style/Base.Widget.AppCompat.ProgressBar"