Add support copy to clipboard for table

src/databaseview.cpp

@@ -239,7 +239,8 @@ void FITSFileModel::prepareQuery()
 
     if(!query.exec())
         qWarning() << "Failed to exectute query" << query.lastQuery() << bindValuesJoin << bindValues;
-    setQuery(std::move(query));
+    else
+        setQuery(std::move(query));
 
     setHeaderData(0, Qt::Horizontal, tr("File name"));
     i = 1;
@@ -255,7 +256,7 @@ void FITSFileModel::prepareQuery()
     m_markedFiles = QSet<QString>(list.begin(), list.end());
 }
 
-DatabaseTableView::DatabaseTableView(QWidget *parent) : QTableView(parent)
+DatabaseTableView::DatabaseTableView(QWidget *parent) : CopyTableView(parent)
 {
 }
 
@@ -498,3 +499,37 @@ void DataBaseView::visible(bool visible)
 {
     if(visible)m_model->load();
 }
+
+CopyTableView::CopyTableView(QWidget *parent) : QTableView(parent)
+{
+}
+
+void CopyTableView::keyPressEvent(QKeyEvent *event)
+{
+    if(event->matches(QKeySequence::Copy))
+    {
+        QModelIndexList list = selectedIndexes();
+        QString table;
+        if(list.size() == 0)return;
+
+        int row = list.first().row();
+        int col = list.first().column();
+        for(auto &index : list)
+        {
+            if(row != index.row())
+                table.append('\n');
+            else if(col != index.column())
+                table.append('\t');
+
+            table.append(index.data().toString());
+            row = index.row();
+            col = index.column();
+        }
+        qApp->clipboard()->setText(table);
+        event->accept();
+    }
+    else
+    {
+        QTableView::keyPressEvent(event);
+    }
+}

src/databaseview.h

@@ -44,7 +44,15 @@ protected:
     void prepareQuery();
 };
 
-class DatabaseTableView : public QTableView
+class CopyTableView : public QTableView
+{
+    Q_OBJECT
+public:
+    explicit CopyTableView(QWidget *parent = nullptr);
+    void keyPressEvent(QKeyEvent *event);
+};
+
+class DatabaseTableView : public CopyTableView
 {
     Q_OBJECT
 public: