The tablespage now has a namespace filter allowing it to be used for

a pg_catalog and information_schema tab.

pglab/DatabaseWindow.cpp

@@ -109,6 +109,16 @@ void DatabaseWindow::catalogLoaded()
 		tt->setCatalog(m_database->catalog());
 		ui->tabWidget->addTab(tt, "Tables");
 
+		auto pg_cat_tables = new TablesPage(this);
+		pg_cat_tables->setNamespaceFilter(TablesTableModel::PgCatalog);
+		pg_cat_tables->setCatalog(m_database->catalog());
+		ui->tabWidget->addTab(pg_cat_tables, "pg_catalog");
+
+		auto info_schema_tables = new TablesPage(this);
+		info_schema_tables->setNamespaceFilter(TablesTableModel::InformationSchema);
+		info_schema_tables->setCatalog(m_database->catalog());
+		ui->tabWidget->addTab(info_schema_tables, "information_schema");
+
 		auto functions_page = new FunctionsPage(this);
 		functions_page->setCatalog(m_database->catalog());
 		ui->tabWidget->addTab(functions_page, "Functions");

pglab/TablesPage.cpp

@@ -16,7 +16,6 @@
 #include "ResultTableModelUtil.h"
 #include "SqlFormattingUtils.h"
 #include "SqlSyntaxHighlighter.h"
-#include "TablesTableModel.h"
 #include "TriggerPage.h"
 #include "UserConfiguration.h"
 #include "SqlCodePreview.h"
@@ -57,6 +56,8 @@ TablesPage::TablesPage(DatabaseWindow *parent)
 	ui->indexSqlEdit->setFont(code_font);
 
 
+
+
 	// Connect signals
 	// ---------------
 	// Table selection
@@ -142,6 +143,11 @@ void TablesPage::setCatalog(std::shared_ptr<PgDatabaseCatalog> cat)
 	highlighter->setTypes(*cat->types());
 }
 
+void TablesPage::setNamespaceFilter(TablesTableModel::NamespaceFilter filter)
+{
+	m_tablesModel->setNamespaceFilter(filter);
+}
+
 
 void TablesPage::tableListTable_currentRowChanged(const QModelIndex &current, const QModelIndex &previous)
 {

pglab/TablesPage.h

@@ -5,6 +5,7 @@
 #include <memory>
 #include <optional>
 #include <QItemSelection>
+#include "TablesTableModel.h"
 
 namespace Ui {
 class TablesPage;
@@ -32,6 +33,7 @@ public:
 	~TablesPage();
 
 	void setCatalog(std::shared_ptr<PgDatabaseCatalog> cat);
+	void setNamespaceFilter(TablesTableModel::NamespaceFilter filter);
 private:
 	Ui::TablesPage *ui;
 	DatabaseWindow *m_window;

pglab/TablesTableModel.cpp

@@ -12,26 +12,50 @@ TablesTableModel::TablesTableModel(QObject *parent)
 	: QAbstractTableModel(parent)
 {}
 
+void TablesTableModel::setNamespaceFilter(NamespaceFilter nsf)
+{
+	m_namespaceFilter = nsf;
+	reloadData();
+}
+
 void TablesTableModel::setCatalog(std::shared_ptr<const PgDatabaseCatalog> cat)
 {
-	beginResetModel();
 	m_catalog = cat;
+	reloadData();
+
+}
+
+void TablesTableModel::reloadData()
+{
+	if (!m_catalog)
+		return;
+
+	beginResetModel();
 
 	// Later afscheiden naar filter functie
-	auto classes = cat->classes();
+	auto classes = m_catalog->classes();
 
 	// How many?
-	int n = 0;
-	for (const auto &e : *classes)
-		if (e.kind == RelKind::Table && !e.ns().isSystemCatalog()) ++n;
 
 	m_tables.clear();
-	m_tables.reserve(n); // reserve space
 	for (const auto &e : *classes) {
-		if (e.kind == RelKind::Table && !e.ns().isSystemCatalog()) {
-			m_tables.push_back(e);
+		bool add = false;
+		if (e.kind == RelKind::Table) {
+			switch (m_namespaceFilter) {
+			case TablesTableModel::User:
+				add = !e.ns().isSystemCatalog();
+				break;
+			case TablesTableModel::PgCatalog:
+				add = e.ns().objectName() == "pg_catalog";
+				break;
+			case TablesTableModel::InformationSchema:
+				add = e.ns().objectName() == "information_schema";
+				break;
 			}
 		}
+		if (add)
+			m_tables.push_back(e);
+	}
 
 	doSort(1);
 	endResetModel();

pglab/TablesTableModel.h

@@ -9,6 +9,8 @@
 class PgClass;
 class PgDatabaseCatalog;
 
+
+
 class TablesTableModel: public QAbstractTableModel {
 public:
 	enum e_Columns : int {
@@ -22,6 +24,10 @@ public:
 
 	TablesTableModel(QObject *parent);
 
+	enum NamespaceFilter {
+		User, PgCatalog, InformationSchema
+	};
+	void setNamespaceFilter(NamespaceFilter nsf);
 	void setCatalog(std::shared_ptr<const PgDatabaseCatalog> cat);
 
 	virtual void sort(int column, Qt::SortOrder order = Qt::AscendingOrder) override;
@@ -42,8 +48,11 @@ private:
 	using t_Tables = std::vector<PgClass>;
 
 	std::shared_ptr<const PgDatabaseCatalog> m_catalog;
+	NamespaceFilter m_namespaceFilter = User;
 	t_Tables m_tables;
 
+	void reloadData();
+
 	Oid getType(int column) const;
 	QVariant getData(const QModelIndex &index) const;
 //	QString formatTableName(const PgClass &cls) const;