From 38fc9398609e2770bf227d41fd8f359214c9e498 Mon Sep 17 00:00:00 2001
From: eelke <eelke@eelkeklein.nl>
Date: Sun, 4 Jul 2021 20:24:05 +0200
Subject: [PATCH] cleanup DatabaseWindow.cpp

---
 pglab/DatabaseWindow.cpp | 95 +++++++++++++++++++---------------------
 pglab/DatabaseWindow.h   |  5 +++
 2 files changed, 49 insertions(+), 51 deletions(-)

diff --git a/pglab/DatabaseWindow.cpp b/pglab/DatabaseWindow.cpp
index 0877411..b10dbed 100644
--- a/pglab/DatabaseWindow.cpp
+++ b/pglab/DatabaseWindow.cpp
@@ -380,24 +380,26 @@ void DatabaseWindow::newCatalogInspectorPage(QString caption, NamespaceFilter fi
 void DatabaseWindow::newServerInspectorPage()
 {
     auto si = new ServerInspector(m_database, this);
-//    si->addAction(actionRefreshCatalog);
     addPage(si, tr("Server"));
-
 }
 
 void DatabaseWindow::closeTab(int index)
 {
-	QWidget *widget = m_tabWidget->widget(index);
+    if (index < 0)
+        return;
 
-	auto mp = dynamic_cast<ManagedPage*>(widget);
-	if (mp) {
-		if (mp->CanClose(true)) {
-			m_tabWidget->removeTab(index);
-		}
-	}
-	else if (index >= 0) {
+    if (canCloseTab(index))
 		m_tabWidget->removeTab(index);
-	}	
+}
+
+bool DatabaseWindow::canCloseTab(int index) const
+{
+    QWidget *widget = m_tabWidget->widget(index);
+    auto mp = dynamic_cast<ManagedPage*>(widget);
+    if (mp) {
+        return mp->CanClose(true);
+    }
+    return true;
 }
 
 void DatabaseWindow::openSqlFile(QString file_name)
@@ -471,75 +473,73 @@ void DatabaseWindow::on_actionClose_triggered()
 void DatabaseWindow::on_actionCopy_triggered()
 {
 	QWidget *w = QApplication::focusWidget();
-	QTableView *tv = dynamic_cast<QTableView*>(w);
-	if (tv) {
+    if (w == nullptr)
+        return;
+
+    QTableView *tv = dynamic_cast<QTableView*>(w);
+    if (tv)
 		copySelectionToClipboard(tv);
-	}
-	else {
-		const QMetaObject *meta = w->metaObject();
-		int i = meta->indexOfMethod("copy()");
-		if (i != -1) {
-			QMetaMethod method = meta->method(i);
-			method.invoke(w, Qt::AutoConnection);
-		}
-	}
+    else
+        InvokeCopyIfPresent(w);
+}
+
+void DatabaseWindow::InvokeCopyIfPresent(QWidget *w)
+{
+    const QMetaObject *meta = w->metaObject();
+    int i = meta->indexOfMethod("copy()");
+    if (i != -1) {
+        QMetaMethod method = meta->method(i);
+        method.invoke(w, Qt::AutoConnection);
+    }
 }
 
 void DatabaseWindow::on_actionCopyAsCString_triggered()
 {
 	auto query_tool = GetActiveQueryTool();
-	if (query_tool) {
+    if (query_tool)
 		query_tool->copyQueryAsCString();
-	}
 }
 
 void DatabaseWindow::on_actionCopyAsRawCppString_triggered()
 {
 	auto query_tool = GetActiveQueryTool();
-	if (query_tool) {
+    if (query_tool)
 		query_tool->copyQueryAsRawCppString();
-	}
 }
 
 void DatabaseWindow::on_actionExecuteQuery_triggered()
 {
 	auto query_tool = GetActiveQueryTool();
-	if (query_tool) {
+    if (query_tool)
 		query_tool->execute();
-	}
 }
 
 void DatabaseWindow::on_actionExplain_triggered()
 {
 	auto query_tool = GetActiveQueryTool();
-	if (query_tool) {
+    if (query_tool)
 		query_tool->explain(false);
-	}
 }
 
 void DatabaseWindow::on_actionExplainAnalyze_triggered()
 {
 	auto query_tool = GetActiveQueryTool();
-	if (query_tool) {
+    if (query_tool)
 		query_tool->explain(true);
-	}
 }
 
 void DatabaseWindow::on_actionExportData_triggered()
 {
 	auto query_tool = GetActiveQueryTool();
-	if (query_tool) {
+    if (query_tool)
 		query_tool->exportData();
-	}
 }
 
 void DatabaseWindow::on_actionGenerateCode_triggered()
 {
 	auto query_tool = GetActiveQueryTool();
-	if (query_tool) {
+    if (query_tool)
 		query_tool->generateCode();
-		//newCodeGenPage
-	}
 }
 
 void DatabaseWindow::on_actionInspectInformationSchema_triggered()
@@ -581,9 +581,8 @@ void DatabaseWindow::on_actionOpenSql_triggered()
 void DatabaseWindow::on_actionPasteLangString_triggered()
 {
 	auto query_tool = GetActiveQueryTool();
-	if (query_tool) {
+    if (query_tool)
 		query_tool->pasteLangString();
-	}
 }
 
 void DatabaseWindow::on_actionRefreshCatalog_triggered()
@@ -594,33 +593,29 @@ void DatabaseWindow::on_actionRefreshCatalog_triggered()
 void DatabaseWindow::on_actionRefreshCrud_triggered()
 {
 	auto crud = GetActiveCrud();
-	if (crud) {
+    if (crud)
 		crud->refresh();
-	}
 }
 
 void DatabaseWindow::on_actionSaveSql_triggered()
 {
 	auto query_tool = GetActiveQueryTool();
-	if (query_tool) {
+    if (query_tool)
 		query_tool->save();
-	}
 }
 
 void DatabaseWindow::on_actionSaveSqlAs_triggered()
 {
 	auto query_tool = GetActiveQueryTool();
-	if (query_tool) {
+    if (query_tool)
 		query_tool->saveAs();
-	}
 }
 
 void DatabaseWindow::on_actionSaveCopyOfSqlAs_triggered()
 {
 	auto query_tool = GetActiveQueryTool();
-	if (query_tool) {
+    if (query_tool)
 		query_tool->saveCopyAs();
-	}
 }
 
 void DatabaseWindow::on_actionShowConnectionManager_triggered()
@@ -657,9 +652,8 @@ void DatabaseWindow::setTitleForWidget(QWidget *widget, QString title, QString h
 void DatabaseWindow::setIconForWidget(QWidget *widget, QIcon icon)
 {
 	int i = m_tabWidget->indexOf(widget);
-	if (i >= 0) {
+    if (i >= 0)
 		m_tabWidget->setTabIcon(i, icon);
-	}
 }
 
 
@@ -676,9 +670,8 @@ void DatabaseWindow::showStatusBarMessage(QString message)
 
 void DatabaseWindow::dragEnterEvent(QDragEnterEvent *event)
 {
-    if (event->mimeData()->hasUrls()) {
+    if (event->mimeData()->hasUrls())
         event->acceptProposedAction();
-    }
 }
 
 void DatabaseWindow::dropEvent(QDropEvent *event)
diff --git a/pglab/DatabaseWindow.h b/pglab/DatabaseWindow.h
index 846f85b..6094fad 100644
--- a/pglab/DatabaseWindow.h
+++ b/pglab/DatabaseWindow.h
@@ -128,8 +128,13 @@ private:
 	void newCatalogInspectorPage(QString caption, NamespaceFilter filter);
     void newServerInspectorPage();
 	void closeTab(int index);
+    bool canCloseTab(int index) const;
     void openSqlFile(QString file_name);
 
+    /// Uses introspection to determine if the specific widget has a copy function.
+    /// If it has it invokes this method using reflection.
+    static void InvokeCopyIfPresent(QWidget *w);
+
 private slots:
 	void catalogLoaded();
 	void tableSelected(Oid tableoid);