diff --git a/src/plugins/qmldesigner/components/componentcore/modelnodeoperations.cpp b/src/plugins/qmldesigner/components/componentcore/modelnodeoperations.cpp
index 92f903aa0a6..5724d5d1002 100644
--- a/src/plugins/qmldesigner/components/componentcore/modelnodeoperations.cpp
+++ b/src/plugins/qmldesigner/components/componentcore/modelnodeoperations.cpp
@@ -1505,68 +1505,6 @@ QString getTemplateDialog(const Utils::FilePath &projectPath)
     return result;
 }
 
-void styleMerge(const SelectionContext &selectionContext, const QString &templateFile)
-{
-    Model *parentModel = selectionContext.view()->model();
-
-    QTC_ASSERT(parentModel, return);
-
-    QScopedPointer<Model> templateModel(Model::create("QtQuick.Item", 2, 1, parentModel));
-    Q_ASSERT(templateModel.data());
-
-    templateModel->setFileUrl(selectionContext.view()->model()->fileUrl());
-
-    QPlainTextEdit textEditTemplate;
-    Utils::FileReader reader;
-
-    QTC_ASSERT(reader.fetch(Utils::FilePath::fromString(templateFile)), return);
-    QString qmlTemplateString = QString::fromUtf8(reader.data());
-    QString imports;
-
-    for (const Import &import : parentModel->imports())
-        imports += QStringLiteral("import ") + import.toString(true) + QLatin1Char(';') + QLatin1Char('\n');
-
-    textEditTemplate.setPlainText(imports + qmlTemplateString);
-    NotIndentingTextEditModifier textModifierTemplate(&textEditTemplate);
-
-    QScopedPointer<RewriterView> templateRewriterView(new RewriterView(RewriterView::Amend, nullptr));
-    templateRewriterView->setTextModifier(&textModifierTemplate);
-    templateModel->attachView(templateRewriterView.data());
-    templateRewriterView->setCheckSemanticErrors(false);
-
-    ModelNode templateRootNode = templateRewriterView->rootModelNode();
-    QTC_ASSERT(templateRootNode.isValid(), return);
-
-    QScopedPointer<Model> styleModel(Model::create("QtQuick.Item", 2, 1, parentModel));
-    Q_ASSERT(styleModel.data());
-
-    styleModel->setFileUrl(selectionContext.view()->model()->fileUrl());
-
-    QPlainTextEdit textEditStyle;
-    RewriterView *parentRewriterView = selectionContext.view()->model()->rewriterView();
-    QTC_ASSERT(parentRewriterView, return);
-    textEditStyle.setPlainText(parentRewriterView->textModifierContent());
-    NotIndentingTextEditModifier textModifierStyle(&textEditStyle);
-
-    QScopedPointer<RewriterView> styleRewriterView(new RewriterView(RewriterView::Amend, nullptr));
-    styleRewriterView->setTextModifier(&textModifierStyle);
-    styleModel->attachView(styleRewriterView.data());
-
-    StylesheetMerger merger(templateRewriterView.data(), styleRewriterView.data());
-
-    try {
-        merger.merge();
-    } catch (Exception &e) {
-        e.showException();
-    }
-
-    try {
-        parentRewriterView->textModifier()->textDocument()->setPlainText(templateRewriterView->textModifierContent());
-    } catch (Exception &e) {
-        e.showException();
-    }
-}
-
 void mergeWithTemplate(const SelectionContext &selectionContext)
 {
     const Utils::FilePath projectPath = Utils::FilePath::fromString(baseDirectory(selectionContext.view()->model()->fileUrl()));
@@ -1574,7 +1512,7 @@ void mergeWithTemplate(const SelectionContext &selectionContext)
     const QString templateFile = getTemplateDialog(projectPath);
 
     if (QFileInfo::exists(templateFile))
-        styleMerge(selectionContext, templateFile);
+        StylesheetMerger::styleMerge(selectionContext.view()->model(), templateFile);
 }
 
 void removeGroup(const SelectionContext &selectionContext)
diff --git a/src/plugins/qmldesigner/designercore/include/stylesheetmerger.h b/src/plugins/qmldesigner/designercore/include/stylesheetmerger.h
index 86f48f06776..202f54ad3bf 100644
--- a/src/plugins/qmldesigner/designercore/include/stylesheetmerger.h
+++ b/src/plugins/qmldesigner/designercore/include/stylesheetmerger.h
@@ -48,6 +48,8 @@ class QMLDESIGNERCORE_EXPORT StylesheetMerger
 public:
     StylesheetMerger(AbstractView*, AbstractView*);
     void merge();
+    static void styleMerge(Model *model, const QString &templateFile);
+
 private:
     void preprocessStyleSheet();
     bool idExistsInBothModels(const QString& id);
diff --git a/src/plugins/qmldesigner/designercore/model/stylesheetmerger.cpp b/src/plugins/qmldesigner/designercore/model/stylesheetmerger.cpp
index e12912811f8..655a8a0938c 100644
--- a/src/plugins/qmldesigner/designercore/model/stylesheetmerger.cpp
+++ b/src/plugins/qmldesigner/designercore/model/stylesheetmerger.cpp
@@ -34,8 +34,14 @@
 #include <nodelistproperty.h>
 #include <nodemetainfo.h>
 #include <nodeproperty.h>
+#include <plaintexteditmodifier.h>
+#include <rewriterview.h>
 #include <variantproperty.h>
 
+#include <utils/fileutils.h>
+#include <utils/qtcassert.h>
+
+#include <QPlainTextEdit>
 #include <QQueue>
 #include <QRegularExpression>
 
@@ -527,4 +533,69 @@ void StylesheetMerger::merge()
         }
     }
 }
+
+void StylesheetMerger::styleMerge(Model *model, const QString &templateFile)
+{
+    Model *parentModel = model;
+
+    QTC_ASSERT(parentModel, return );
+
+    QScopedPointer<Model> templateModel(Model::create("QtQuick.Item", 2, 1, parentModel));
+    Q_ASSERT(templateModel.data());
+
+    templateModel->setFileUrl(parentModel->fileUrl());
+
+    QPlainTextEdit textEditTemplate;
+    Utils::FileReader reader;
+
+    QTC_ASSERT(reader.fetch(Utils::FilePath::fromString(templateFile)), return );
+    QString qmlTemplateString = QString::fromUtf8(reader.data());
+    QString imports;
+
+    for (const Import &import : parentModel->imports())
+        imports += QStringLiteral("import ") + import.toString(true) + QLatin1Char(';')
+                   + QLatin1Char('\n');
+
+    textEditTemplate.setPlainText(imports + qmlTemplateString);
+    NotIndentingTextEditModifier textModifierTemplate(&textEditTemplate);
+
+    QScopedPointer<RewriterView> templateRewriterView(
+        new RewriterView(RewriterView::Amend, nullptr));
+    templateRewriterView->setTextModifier(&textModifierTemplate);
+    templateModel->attachView(templateRewriterView.data());
+    templateRewriterView->setCheckSemanticErrors(false);
+
+    ModelNode templateRootNode = templateRewriterView->rootModelNode();
+    QTC_ASSERT(templateRootNode.isValid(), return );
+
+    QScopedPointer<Model> styleModel(Model::create("QtQuick.Item", 2, 1, parentModel));
+    Q_ASSERT(styleModel.data());
+
+    styleModel->setFileUrl(parentModel->fileUrl());
+
+    QPlainTextEdit textEditStyle;
+    RewriterView *parentRewriterView = parentModel->rewriterView();
+    QTC_ASSERT(parentRewriterView, return );
+    textEditStyle.setPlainText(parentRewriterView->textModifierContent());
+    NotIndentingTextEditModifier textModifierStyle(&textEditStyle);
+
+    QScopedPointer<RewriterView> styleRewriterView(new RewriterView(RewriterView::Amend, nullptr));
+    styleRewriterView->setTextModifier(&textModifierStyle);
+    styleModel->attachView(styleRewriterView.data());
+
+    StylesheetMerger merger(templateRewriterView.data(), styleRewriterView.data());
+
+    try {
+        merger.merge();
+    } catch (Exception &e) {
+        e.showException();
+    }
+
+    try {
+        parentRewriterView->textModifier()->textDocument()->setPlainText(
+            templateRewriterView->textModifierContent());
+    } catch (Exception &e) {
+        e.showException();
+    }
+}
 }