Add option to disable filtering by typing in FilterComboBox

src/utils/filter-combo-box.cpp

@@ -7,9 +7,22 @@
 
 namespace advss {
 
+bool FilterComboBox::_filteringEnabled = false;
+
 FilterComboBox::FilterComboBox(QWidget *parent, const QString &placehodler)
 	: QComboBox(parent)
 {
+	// If the filtering behaviour of the FilterComboBox is disabled it is
+	// just a regular QComboBox with the option to set a placeholder so exit
+	// the constructor early.
+
+	if (!_filteringEnabled) {
+		if (!placehodler.isEmpty()) {
+			setPlaceholderText(placehodler);
+		}
+		return;
+	}
+
 	// Allow edit for completer but don't add new entries on pressing enter
 	setEditable(true);
 	setInsertPolicy(InsertPolicy::NoInsert);
@@ -31,6 +44,11 @@ FilterComboBox::FilterComboBox(QWidget *parent, const QString &placehodler)
 		&FilterComboBox::TextChagned);
 }
 
+void FilterComboBox::SetFilterBehaviourEnabled(bool value)
+{
+	FilterComboBox::_filteringEnabled = value;
+}
+
 void FilterComboBox::focusOutEvent(QFocusEvent *event)
 {
 	// Reset on invalid selection

src/utils/filter-combo-box.hpp

@@ -10,6 +10,7 @@ class FilterComboBox : public QComboBox {
 public:
 	FilterComboBox(QWidget *parent = nullptr,
 		       const QString &placehodler = "");
+	static void SetFilterBehaviourEnabled(bool);
 
 protected:
 	void focusOutEvent(QFocusEvent *event) override;
@@ -20,6 +21,7 @@ private slots:
 
 private:
 	int _lastCompleterHighlightRow = -1;
+	static bool _filteringEnabled;
 };
 
 } // namespace advss