Added sort on priority

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

@@ -79,6 +79,7 @@ public interface DaoMessage {
             " ORDER BY CASE" +
             "  WHEN 'unread' = :sort THEN SUM(1 - message.ui_seen) = 0" +
             "  WHEN 'starred' = :sort THEN COUNT(message.id) - SUM(1 - message.ui_flagged) = 0" +
+            "  WHEN 'priority' = :sort THEN -MAX(IFNULL(message.priority, 1))" +
             "  WHEN 'sender' = :sort THEN LOWER(message.sender)" +
             "  WHEN 'subject' = :sort THEN LOWER(message.subject)" +
             "  WHEN 'size' = :sort THEN -SUM(message.total)" +
@@ -127,6 +128,7 @@ public interface DaoMessage {
             " ORDER BY CASE" +
             "  WHEN 'unread' = :sort THEN SUM(1 - message.ui_seen) = 0" +
             "  WHEN 'starred' = :sort THEN COUNT(message.id) - SUM(1 - message.ui_flagged) = 0" +
+            "  WHEN 'priority' = :sort THEN -MAX(IFNULL(message.priority, 1))" +
             "  WHEN 'sender' = :sort THEN LOWER(message.sender)" +
             "  WHEN 'subject' = :sort THEN LOWER(message.subject)" +
             "  WHEN 'size' = :sort THEN -SUM(message.total)" +

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

@@ -3025,6 +3025,7 @@ public class FragmentMessages extends FragmentBase implements SharedPreferences.
         if (viewType == AdapterMessage.ViewType.THREAD) {
             menu.findItem(R.id.menu_sort_on_time).setVisible(false);
             menu.findItem(R.id.menu_sort_on_unread).setVisible(false);
+            menu.findItem(R.id.menu_sort_on_priority).setVisible(false);
             menu.findItem(R.id.menu_sort_on_starred).setVisible(false);
             menu.findItem(R.id.menu_sort_on_sender).setVisible(false);
             menu.findItem(R.id.menu_sort_on_subject).setVisible(false);
@@ -3039,6 +3040,8 @@ public class FragmentMessages extends FragmentBase implements SharedPreferences.
             menu.findItem(R.id.menu_sort_on_unread).setChecked(true);
         else if ("starred".equals(sort))
             menu.findItem(R.id.menu_sort_on_starred).setChecked(true);
+        else if ("priority".equals(sort))
+            menu.findItem(R.id.menu_sort_on_priority).setChecked(true);
         else if ("sender".equals(sort))
             menu.findItem(R.id.menu_sort_on_sender).setChecked(true);
         else if ("subject".equals(sort))
@@ -3109,6 +3112,11 @@ public class FragmentMessages extends FragmentBase implements SharedPreferences.
                 onMenuSort("starred");
                 return true;
 
+            case R.id.menu_sort_on_priority:
+                item.setChecked(true);
+                onMenuSort("priority");
+                return true;
+
             case R.id.menu_sort_on_sender:
                 item.setChecked(true);
                 onMenuSort("sender");

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

@@ -31,6 +31,9 @@
                 <item
                     android:id="@+id/menu_sort_on_starred"
                     android:title="@string/title_sort_on_starred" />
+                <item
+                    android:id="@+id/menu_sort_on_priority"
+                    android:title="@string/title_sort_on_priority" />
                 <item
                     android:id="@+id/menu_sort_on_sender"
                     android:title="@string/title_sort_on_sender" />

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

@@ -816,6 +816,7 @@
     <string name="title_sort_on_time">Time</string>
     <string name="title_sort_on_unread">Unread</string>
     <string name="title_sort_on_starred">Starred</string>
+    <string name="title_sort_on_priority">Priority</string>
     <string name="title_sort_on_sender">Sender</string>
     <string name="title_sort_on_subject">Subject</string>
     <string name="title_sort_on_size">Size</string>