add extension filter

gui/tools/invoke_ccfindersw_dialog.cpp

@@ -70,4 +70,5 @@ invoker_t invoke_ccfindersw_dialog::create_invoker() const noexcept
 {
 	return ccfindersw_invoker();
 }
+
 }

gui/tools/invoke_ccvolti_dialog.cpp

@@ -7,6 +7,7 @@ invoke_ccvolti_dialog::invoke_ccvolti_dialog(const QString &target, QWidget *par
 	: invoke_dialog(target, parent)
 {
 	this->setWindowTitle(tr("CCVolti"));
+	this->set_filter("CCVolti(*.csv)");
 	this->begin_setup_parameters_layout();
 	this->end_setup_parameters_layout();
 }

gui/tools/invoke_dialog.cpp

@@ -97,7 +97,7 @@ void invoke_dialog::get_target_path() noexcept
 
 void invoke_dialog::get_output_filename() noexcept
 {
-	if(const auto path=QFileDialog::getSaveFileName(this, tr("Save code clone detection result")); !path.isEmpty())
+	if(const auto path=QFileDialog::getSaveFileName(this, tr("Save code clone detection result"), QString(), this->filter_); !path.isEmpty())
 	{
 		this->output_path_edit_->setText(path);
 	}
@@ -108,6 +108,11 @@ void invoke_dialog::dispatch_invoker() noexcept
 	emit invoker_dispatched(this->create_invoker());
 }
 
+void invoke_dialog::set_filter(const QString &filter) noexcept
+{
+	this->filter_=filter;
+}
+
 void invoke_dialog::end_setup_parameters_layout() noexcept
 {
 	this->layout_->addLayout(this->parameters_layout_);

gui/tools/invoke_dialog.hpp

@@ -76,8 +76,9 @@ private slots:
 	QLineEdit *output_path_edit_=new QLineEdit(this);
 	key_arg_box *language_;
 
-	virtual void begin_setup_parameters_layout() noexcept=0;
+	void set_filter(const QString &filter) noexcept;
 
+	virtual void begin_setup_parameters_layout() noexcept=0;
 	void end_setup_parameters_layout() noexcept;
 
 private:
@@ -88,6 +89,8 @@ private slots:
 	QDialogButtonBox *button_box_=new QDialogButtonBox(QDialogButtonBox::Ok|QDialogButtonBox::Cancel, Qt::Horizontal);
 
 	QGridLayout *directory_layout_=new QGridLayout;
+
+	QString filter_;
 };
 
 }