TextEditor: Use callback in refactoring markers

Allows to trigger actions without adding specific handling into the
editor.

Change-Id: Ia63d65d3feca37bcefca1b6322ade039027a92d8
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/texteditor/refactoroverlay.cpp

@@ -27,6 +27,7 @@
 #include "textdocumentlayout.h"
 #include "texteditor.h"
 
+#include <utils/algorithm.h>
 #include <utils/utilsicons.h>
 
 #include <QPainter>
@@ -92,4 +93,11 @@ void RefactorOverlay::paintMarker(const RefactorMarker& marker, QPainter *painte
     m_maxWidth = qMax(m_maxWidth, x + actualIconSize.width() - int(offset.x()));
 }
 
+RefactorMarkers RefactorMarker::filterOutType(const RefactorMarkers &markers, const Core::Id &type)
+{
+    return Utils::filtered(markers, [type](const RefactorMarker &marker) {
+        return marker.type != type;
+    });
+}
+
 } // namespace TextEditor