allow repeated read/unread changing by clicking, same as switching starred

src/librssguard/core/messagesmodel.cpp

@@ -619,6 +619,15 @@ QVariant MessagesModel::data(const QModelIndex& idx, int role) const {
   }
 }
 
+bool MessagesModel::switchMessageReadUnread(int row_index) {
+  RootItem::ReadStatus current_read =
+    RootItem::ReadStatus(data(row_index, MSG_DB_READ_INDEX, Qt::ItemDataRole::EditRole).toInt());
+
+  return setMessageRead(row_index,
+                        current_read == RootItem::ReadStatus::Read ? RootItem::ReadStatus::Unread
+                                                                   : RootItem::ReadStatus::Read);
+}
+
 bool MessagesModel::setMessageRead(int row_index, RootItem::ReadStatus read) {
   if (data(row_index, MSG_DB_READ_INDEX, Qt::ItemDataRole::EditRole).toInt() == int(read)) {
     // Read status is the same is the one currently set.

src/librssguard/core/messagesmodel.h

@@ -65,6 +65,7 @@ class MessagesModel : public QSqlQueryModel, public MessagesModelSqlLayer {
 
     // SINGLE message manipulators.
     bool switchMessageImportance(int row_index);
+    bool switchMessageReadUnread(int row_index);
     bool setMessageRead(int row_index, RootItem::ReadStatus read);
 
     // BATCH messages manipulators.

src/librssguard/gui/messagesview.cpp

@@ -474,6 +474,11 @@ void MessagesView::mousePressEvent(QMouseEvent* event) {
             emit currentMessageChanged(m_sourceModel->messageAt(mapped_index.row()), m_sourceModel->loadedItem());
           }
         }
+        else if (mapped_index.column() == MSG_DB_READ_INDEX) {
+          if (m_sourceModel->switchMessageReadUnread(mapped_index.row())) {
+            emit currentMessageChanged(m_sourceModel->messageAt(mapped_index.row()), m_sourceModel->loadedItem());
+          }
+        }
       }
 
       break;