refactor use PgLabTableViewHelper on CatalogTablesPage

pglab/PgLabTableViewHelper.h

@@ -3,6 +3,9 @@
 #include <QTableWidget>
 #include <QSortFilterProxyModel>
 #include "PgLabTableView.h"
+#include <optional>
+
+class PgDatabaseCatalog;
 
 template <typename TableModel>
 class PgLabTableViewHelper {
@@ -33,6 +36,36 @@ public:
         return m_sortFilter;
     }
 
+    void setCatalog(std::shared_ptr<PgDatabaseCatalog> cat)
+    {
+        m_dataModel->setCatalog(cat);
+        m_tableView->resizeColumnsToContents();
+    }
+
+    QModelIndex currentIndex() const
+    {
+        QModelIndex index = m_tableView->selectionModel()->currentIndex();
+        if (!index.isValid())
+            return index;
+
+        return m_sortFilter->mapToSource(index);
+    }
+
+    typename TableModel::RowItem rowItem(int row) const
+    {
+        return m_dataModel->rowItem(row);
+    }
+
+    std::optional<typename TableModel::RowItem> currentRowItem() const
+    {
+        auto index = currentIndex();
+        if (!index.isValid())
+            return {};
+
+        return rowItem(index.row());
+    }
+
+
 private:
     PgLabTableView *m_tableView = nullptr;
     TableModel *m_dataModel = nullptr;