Show icon single source/target folder

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

@@ -7293,6 +7293,19 @@ public class FragmentMessages extends FragmentBase implements SharedPreferences.
                 this.name = folder.name;
                 this.display = folder.getDisplayName(context);
             }
+
+            @Override
+            public boolean equals(Object other) {
+                if (other instanceof Folder)
+                    return this.id == ((Folder) other).id;
+                else
+                    return false;
+            }
+
+            @Override
+            public int hashCode() {
+                return Objects.hash(id);
+            }
         }
     }
 
@@ -7554,15 +7567,27 @@ public class FragmentMessages extends FragmentBase implements SharedPreferences.
             tvSourceFolders.setText(getDisplay(result, false));
             tvTargetFolders.setText(getDisplay(result, true));
 
+            List<MessageTarget.Folder> sources = new ArrayList<>();
+            List<MessageTarget.Folder> targets = new ArrayList<>();
+            for (MessageTarget t : result) {
+                if (!sources.contains(t.sourceFolder))
+                    sources.add(t.sourceFolder);
+                if (!targets.contains(t.targetFolder))
+                    targets.add(t.targetFolder);
+            }
+
             Drawable source = null;
-            Drawable target = null;
-            if (result.size() == 1) {
-                source = getResources().getDrawable(EntityFolder.getIcon(result.get(0).sourceFolder.type), null);
-                target = getResources().getDrawable(EntityFolder.getIcon(result.get(0).targetFolder.type), null);
+            if (sources.size() == 1) {
+                source = getResources().getDrawable(EntityFolder.getIcon(sources.get(0).type), null);
                 if (source != null)
                     source.setBounds(0, 0, source.getIntrinsicWidth(), source.getIntrinsicHeight());
+            }
+
+            Drawable target = null;
+            if (targets.size() == 1) {
+                target = getResources().getDrawable(EntityFolder.getIcon(targets.get(0).type), null);
                 if (target != null)
-                    target.setBounds(0, 0, target.getIntrinsicWidth(), source.getIntrinsicHeight());
+                    target.setBounds(0, 0, target.getIntrinsicWidth(), target.getIntrinsicHeight());
             }
 
             tvSourceFolders.setCompoundDrawablesRelative(source, null, null, null);