CppEditor: Remove unneeded CppEditorWidgetInterface

Removes a pseudo-abstraction and simplifies ClangdClient.

Change-Id: I5161d069371ff92a517866bb7500517cab6781b7
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

17 files changed, 71 insertions, 125 deletions

diff --git a/src/plugins/clangcodemodel/clangdclient.cpp b/src/plugins/clangcodemodel/clangdclient.cpp
index 7c5208d395..c15ad041d7 100644
--- a/src/plugins/clangcodemodel/clangdclient.cpp
+++ b/src/plugins/clangcodemodel/clangdclient.cpp
@@ -41,7 +41,7 @@
 #include <cppeditor/cppeditorconstants.h>
 #include <cppeditor/cppcodemodelsettings.h>
 #include <cppeditor/cppdoxygen.h>
-#include <cppeditor/cppeditorwidgetinterface.h>
+#include <cppeditor/cppeditorwidget.h>
 #include <cppeditor/cppfindreferences.h>
 #include <cppeditor/cppmodelmanager.h>
 #include <cppeditor/cpptoolsreuse.h>
@@ -532,7 +532,7 @@ private:
 class ClangdClient::FollowSymbolData {
 public:
     FollowSymbolData(ClangdClient *q, quint64 id, const QTextCursor &cursor,
-                     CppEditor::CppEditorWidgetInterface *editorWidget,
+                     CppEditor::CppEditorWidget *editorWidget,
                      const DocumentUri &uri, Utils::ProcessLinkCallback &&callback,
                      bool openInSplit)
         : q(q), id(id), cursor(cursor), editorWidget(editorWidget), uri(uri),
@@ -561,19 +561,10 @@ public:
         openedFiles.clear();
     }
 
-    bool isEditorWidgetStillAlive() const
-    {
-        return Utils::anyOf(EditorManager::visibleEditors(), [this](IEditor *editor) {
-            const auto textEditor = qobject_cast<TextEditor::BaseTextEditor *>(editor);
-            return textEditor && dynamic_cast<CppEditor::CppEditorWidgetInterface *>(
-                    textEditor->editorWidget()) == editorWidget;
-        });
-    }
-
     ClangdClient * const q;
     const quint64 id;
     const QTextCursor cursor;
-    CppEditor::CppEditorWidgetInterface * const editorWidget;
+    const QPointer<CppEditor::CppEditorWidget> editorWidget;
     const DocumentUri uri;
     const Utils::ProcessLinkCallback callback;
     VirtualFunctionAssistProvider virtualFuncAssistProvider;
@@ -596,7 +587,7 @@ public:
 class SwitchDeclDefData {
 public:
     SwitchDeclDefData(quint64 id, TextEditor::TextDocument *doc, const QTextCursor &cursor,
-                      CppEditor::CppEditorWidgetInterface *editorWidget,
+                      CppEditor::CppEditorWidget *editorWidget,
                       Utils::ProcessLinkCallback &&callback)
         : id(id), document(doc), uri(DocumentUri::fromFilePath(doc->filePath())),
           cursor(cursor), editorWidget(editorWidget), callback(std::move(callback)) {}
@@ -639,7 +630,7 @@ public:
     const QPointer<TextEditor::TextDocument> document;
     const DocumentUri uri;
     const QTextCursor cursor;
-    CppEditor::CppEditorWidgetInterface * const editorWidget;
+    const QPointer<CppEditor::CppEditorWidget> editorWidget;
     Utils::ProcessLinkCallback callback;
     Utils::optional<DocumentSymbolsResult> docSymbols;
     Utils::optional<AstNode> ast;
@@ -1346,10 +1337,9 @@ void ClangdClient::Private::finishSearch(const ReferencesData &refData, bool can
     runningFindUsages.remove(refData.key);
 }
 
-void ClangdClient::followSymbol(
-        TextEditor::TextDocument *document,
+void ClangdClient::followSymbol(TextEditor::TextDocument *document,
         const QTextCursor &cursor,
-        CppEditor::CppEditorWidgetInterface *editorWidget,
+        CppEditor::CppEditorWidget *editorWidget,
         Utils::ProcessLinkCallback &&callback,
         bool resolveTarget,
         bool openInSplit
@@ -1409,7 +1399,7 @@ void ClangdClient::followSymbol(
 }
 
 void ClangdClient::switchDeclDef(TextEditor::TextDocument *document, const QTextCursor &cursor,
-                                 CppEditor::CppEditorWidgetInterface *editorWidget,
+                                 CppEditor::CppEditorWidget *editorWidget,
                                  Utils::ProcessLinkCallback &&callback)
 {
     QTC_ASSERT(documentOpen(document), openDocument(document));
@@ -1767,7 +1757,7 @@ void ClangdClient::Private::handleGotoImplementationResult(
     // As soon as we know that there is more than one candidate, we start the code assist
     // procedure, to let the user know that things are happening.
     if (followSymbolData->allLinks.size() > 1 && !followSymbolData->virtualFuncAssistProcessor
-            && followSymbolData->isEditorWidgetStillAlive()) {
+            && followSymbolData->editorWidget) {
         followSymbolData->editorWidget->invokeTextEditorWidgetAssist(
                     TextEditor::FollowSymbol, &followSymbolData->virtualFuncAssistProvider);
     }
@@ -2745,17 +2735,17 @@ void ClangdClient::VirtualFunctionAssistProcessor::cancel()
 
 void ClangdClient::VirtualFunctionAssistProcessor::update()
 {
-    if (!m_data->followSymbolData->isEditorWidgetStillAlive())
+    if (!m_data->followSymbolData->editorWidget)
         return;
     setAsyncProposalAvailable(createProposal(false));
 }
 
 void ClangdClient::VirtualFunctionAssistProcessor::finalize()
 {
-    if (!m_data->followSymbolData->isEditorWidgetStillAlive())
+    if (!m_data->followSymbolData->editorWidget)
         return;
     const auto proposal = createProposal(true);
-    if (m_data->followSymbolData->editorWidget->inTestMode) {
+    if (m_data->followSymbolData->editorWidget->isInTestMode()) {
         m_data->followSymbolData->symbolsToDisplay.clear();
         const auto immediateProposal = createProposal(false);
         m_data->followSymbolData->editorWidget->setProposals(immediateProposal, proposal);
diff --git a/src/plugins/clangcodemodel/clangdclient.h b/src/plugins/clangcodemodel/clangdclient.h
index a9c8da57ce..79454fd05c 100644
--- a/src/plugins/clangcodemodel/clangdclient.h
+++ b/src/plugins/clangcodemodel/clangdclient.h
@@ -34,7 +34,7 @@
 #include <QVersionNumber>
 
 namespace Core { class SearchResultItem; }
-namespace CppEditor { class CppEditorWidgetInterface; }
+namespace CppEditor { class CppEditorWidget; }
 namespace ProjectExplorer { class Project; }
 namespace TextEditor { class BaseTextEditor; }
 
@@ -61,14 +61,14 @@ public:
                     const Utils::optional<QString> &replacement);
     void followSymbol(TextEditor::TextDocument *document,
             const QTextCursor &cursor,
-            CppEditor::CppEditorWidgetInterface *editorWidget,
+            CppEditor::CppEditorWidget *editorWidget,
             Utils::ProcessLinkCallback &&callback,
             bool resolveTarget,
             bool openInSplit);
 
     void switchDeclDef(TextEditor::TextDocument *document,
             const QTextCursor &cursor,
-            CppEditor::CppEditorWidgetInterface *editorWidget,
+            CppEditor::CppEditorWidget *editorWidget,
             Utils::ProcessLinkCallback &&callback);
 
     void findLocalUsages(TextEditor::TextDocument *document, const QTextCursor &cursor,
diff --git a/src/plugins/cppeditor/CMakeLists.txt b/src/plugins/cppeditor/CMakeLists.txt
index afc8d04d80..5a57dbf311 100644
--- a/src/plugins/cppeditor/CMakeLists.txt
+++ b/src/plugins/cppeditor/CMakeLists.txt
@@ -46,7 +46,6 @@ add_qtc_plugin(CppEditor
     cppeditoroutline.cpp cppeditoroutline.h
     cppeditorplugin.cpp cppeditorplugin.h
     cppeditorwidget.cpp cppeditorwidget.h
-    cppeditorwidgetinterface.h
     cppelementevaluator.cpp cppelementevaluator.h
     cppfileiterationorder.cpp cppfileiterationorder.h
     cppfilesettingspage.cpp cppfilesettingspage.h cppfilesettingspage.ui
diff --git a/src/plugins/cppeditor/cppeditor.pro b/src/plugins/cppeditor/cppeditor.pro
index ab000441f1..c6a9807711 100644
--- a/src/plugins/cppeditor/cppeditor.pro
+++ b/src/plugins/cppeditor/cppeditor.pro
@@ -42,7 +42,6 @@ HEADERS += \
     cppeditoroutline.h \
     cppeditorplugin.h \
     cppeditorwidget.h \
-    cppeditorwidgetinterface.h \
     cppelementevaluator.h \
     cppfileiterationorder.h \
     cppfilesettingspage.h \
diff --git a/src/plugins/cppeditor/cppeditor.qbs b/src/plugins/cppeditor/cppeditor.qbs
index 0e6e2d5efe..bb98e27b1e 100644
--- a/src/plugins/cppeditor/cppeditor.qbs
+++ b/src/plugins/cppeditor/cppeditor.qbs
@@ -108,7 +108,6 @@ QtcPlugin {
         "cppeditoroutline.h",
         "cppeditorplugin.cpp",
         "cppeditorplugin.h",
-        "cppeditorwidgetinterface.h",
         "cppelementevaluator.cpp",
         "cppelementevaluator.h",
         "cppfileiterationorder.cpp",
diff --git a/src/plugins/cppeditor/cppeditortestcase.h b/src/plugins/cppeditor/cppeditortestcase.h
index 7dd819694d..dc0b240793 100644
--- a/src/plugins/cppeditor/cppeditortestcase.h
+++ b/src/plugins/cppeditor/cppeditortestcase.h
@@ -32,9 +32,9 @@
 namespace TextEditor { class BaseTextEditor; }
 
 namespace CppEditor {
-namespace Internal {
 class CppEditorWidget;
 
+namespace Internal {
 namespace Tests {
 
 class GenericCppTestDocument : public CppEditor::Tests::BaseCppTestDocument
diff --git a/src/plugins/cppeditor/cppeditorwidget.cpp b/src/plugins/cppeditor/cppeditorwidget.cpp
index 1c68b42f34..e8f5773916 100644
--- a/src/plugins/cppeditor/cppeditorwidget.cpp
+++ b/src/plugins/cppeditor/cppeditorwidget.cpp
@@ -427,6 +427,7 @@ public:
     CppLocalRenaming m_localRenaming;
     CppUseSelectionsUpdater m_useSelectionsUpdater;
     CppSelectionChanger m_cppSelectionChanger;
+    bool inTestMode = false;
 };
 
 CppEditorWidgetPrivate::CppEditorWidgetPrivate(CppEditorWidget *q)
@@ -437,6 +438,9 @@ CppEditorWidgetPrivate::CppEditorWidgetPrivate(CppEditorWidget *q)
     , m_useSelectionsUpdater(q)
     , m_cppSelectionChanger()
 {}
+} // namespace Internal
+
+using namespace Internal;
 
 CppEditorWidget::CppEditorWidget()
     : d(new CppEditorWidgetPrivate(this))
@@ -594,7 +598,7 @@ void CppEditorWidget::finalizeInitializationAfterDuplication(TextEditorWidget *o
 void CppEditorWidget::setProposals(const TextEditor::IAssistProposal *immediateProposal,
                                    const TextEditor::IAssistProposal *finalProposal)
 {
-    QTC_ASSERT(inTestMode, return);
+    QTC_ASSERT(isInTestMode(), return);
 #ifdef WITH_TESTS
     emit proposalsReady(immediateProposal, finalProposal);
 #endif
@@ -1504,7 +1508,12 @@ const QList<QTextEdit::ExtraSelection> CppEditorWidget::unselectLeadingWhitespac
     return filtered;
 }
 
-} // namespace Internal
+bool CppEditorWidget::isInTestMode() const { return d->inTestMode; }
+
+#ifdef WITH_TESTS
+void CppEditorWidget::enableTestMode() { d->inTestMode = true; }
+#endif
+
 } // namespace CppEditor
 
 #include "cppeditorwidget.moc"
diff --git a/src/plugins/cppeditor/cppeditorwidget.h b/src/plugins/cppeditor/cppeditorwidget.h
index 998d9d17aa..837954d6c5 100644
--- a/src/plugins/cppeditor/cppeditorwidget.h
+++ b/src/plugins/cppeditor/cppeditorwidget.h
@@ -25,12 +25,18 @@
 
 #pragma once
 
-#include <texteditor/texteditor.h>
+#include "cppeditor_global.h"
 
-#include "cppeditorwidgetinterface.h"
+#include <texteditor/codeassist/assistenums.h>
+#include <texteditor/texteditor.h>
 
 #include <QScopedPointer>
 
+namespace TextEditor {
+class IAssistProposal;
+class IAssistProvider;
+}
+
 namespace CppEditor {
 class FollowSymbolInterface;
 class SemanticInfo;
@@ -41,8 +47,9 @@ class CppEditorDocument;
 class CppEditorOutline;
 class CppEditorWidgetPrivate;
 class FunctionDeclDefLink;
+} // namespace Internal
 
-class CppEditorWidget : public TextEditor::TextEditorWidget, public CppEditorWidgetInterface
+class CPPEDITOR_EXPORT CppEditorWidget : public TextEditor::TextEditorWidget
 {
     Q_OBJECT
 
@@ -50,14 +57,14 @@ public:
     CppEditorWidget();
     ~CppEditorWidget() override;
 
-    CppEditorDocument *cppEditorDocument() const;
-    CppEditorOutline *outline() const;
+    Internal::CppEditorDocument *cppEditorDocument() const;
+    Internal::CppEditorOutline *outline() const;
 
     bool isSemanticInfoValidExceptLocalUses() const;
     bool isSemanticInfoValid() const;
     bool isRenaming() const;
 
-    QSharedPointer<FunctionDeclDefLink> declDefLink() const;
+    QSharedPointer<Internal::FunctionDeclDefLink> declDefLink() const;
     void applyDeclDefLinkChanges(bool jumpToMatch);
 
     TextEditor::AssistInterface *createAssistInterface(
@@ -71,7 +78,7 @@ public:
     void selectAll() override;
 
     void switchDeclarationDefinition(bool inNextSplit);
-    void showPreProcessorWidget() override;
+    void showPreProcessorWidget();
 
     void findUsages() override;
     void findUsages(QTextCursor cursor);
@@ -85,15 +92,19 @@ public:
     static void updateWidgetHighlighting(QWidget *widget, bool highlight);
     static bool isWidgetHighlighted(QWidget *widget);
 
-    SemanticInfo semanticInfo() const override;
-    void updateSemanticInfo() override;
+    SemanticInfo semanticInfo() const;
+    void updateSemanticInfo();
     void invokeTextEditorWidgetAssist(TextEditor::AssistKind assistKind,
-                                      TextEditor::IAssistProvider *provider) override;
+                                      TextEditor::IAssistProvider *provider);
 
     static const QList<QTextEdit::ExtraSelection>
     unselectLeadingWhitespace(const QList<QTextEdit::ExtraSelection> &selections);
 
+    bool isInTestMode() const;
+    void setProposals(const TextEditor::IAssistProposal *immediateProposal,
+                      const TextEditor::IAssistProposal *finalProposal);
 #ifdef WITH_TESTS
+    void enableTestMode();
 signals:
     void proposalsReady(const TextEditor::IAssistProposal *immediateProposal,
                         const TextEditor::IAssistProposal *finalProposal);
@@ -116,7 +127,7 @@ private:
     void updateFunctionDeclDefLink();
     void updateFunctionDeclDefLinkNow();
     void abortDeclDefLink();
-    void onFunctionDeclDefLinkFound(QSharedPointer<FunctionDeclDefLink> link);
+    void onFunctionDeclDefLinkFound(QSharedPointer<Internal::FunctionDeclDefLink> link);
 
     void onCppDocumentUpdated();
 
@@ -137,9 +148,6 @@ private:
     void finalizeInitialization() override;
     void finalizeInitializationAfterDuplication(TextEditorWidget *other) override;
 
-    void setProposals(const TextEditor::IAssistProposal *immediateProposal,
-                      const TextEditor::IAssistProposal *finalProposal) override;
-
     unsigned documentRevision() const;
 
     QMenu *createRefactorMenu(QWidget *parent) const;
@@ -149,8 +157,7 @@ private:
     const ProjectPart *projectPart() const;
 
 private:
-    QScopedPointer<CppEditorWidgetPrivate> d;
+    QScopedPointer<Internal::CppEditorWidgetPrivate> d;
 };
 
-} // namespace Internal
 } // namespace CppEditor
diff --git a/src/plugins/cppeditor/cppeditorwidgetinterface.h b/src/plugins/cppeditor/cppeditorwidgetinterface.h
deleted file mode 100644
index 050ae08ad0..0000000000
--- a/src/plugins/cppeditor/cppeditorwidgetinterface.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of Qt Creator.
-**
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU
-** General Public License version 3 as published by the Free Software
-** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
-** included in the packaging of this file. Please review the following
-** information to ensure the GNU General Public License requirements will
-** be met: https://www.gnu.org/licenses/gpl-3.0.html.
-**
-****************************************************************************/
-
-#pragma once
-
-#include "cppeditor_global.h"
-
-#include <texteditor/codeassist/assistenums.h>
-
-#include <QString>
-
-namespace TextEditor {
-class IAssistProposal;
-class IAssistProvider;
-}
-
-namespace CppEditor {
-
-class SemanticInfo;
-
-// FIXME: Remove
-class CPPEDITOR_EXPORT CppEditorWidgetInterface
-{
-public:
-    virtual void showPreProcessorWidget() = 0;
-    virtual SemanticInfo semanticInfo() const = 0;
-    virtual void updateSemanticInfo() = 0;
-
-    virtual void invokeTextEditorWidgetAssist(TextEditor::AssistKind assistKind,
-                                              TextEditor::IAssistProvider *provider) = 0;
-
-    virtual void setProposals(const TextEditor::IAssistProposal *immediateProposal,
-                              const TextEditor::IAssistProposal *finalProposal) = 0;
-
-    bool inTestMode = false;
-};
-
-} // namespace CppEditor
diff --git a/src/plugins/cppeditor/cppfollowsymbolundercursor.cpp b/src/plugins/cppeditor/cppfollowsymbolundercursor.cpp
index 006f4410b1..ac2747cad7 100644
--- a/src/plugins/cppeditor/cppfollowsymbolundercursor.cpp
+++ b/src/plugins/cppeditor/cppfollowsymbolundercursor.cpp
@@ -24,10 +24,12 @@
 ****************************************************************************/
 
 #include "cppfollowsymbolundercursor.h"
-#include "cppvirtualfunctionassistprovider.h"
+
+#include "cppeditorwidget.h"
 #include "cppmodelmanager.h"
-#include "functionutils.h"
 #include "cpptoolsreuse.h"
+#include "cppvirtualfunctionassistprovider.h"
+#include "functionutils.h"
 #include "symbolfinder.h"
 
 #include <cplusplus/ASTPath.h>
@@ -613,7 +615,7 @@ void FollowSymbolUnderCursor::findLink(
         }
     }
 
-    CppEditorWidgetInterface *editorWidget = data.editorWidget();
+    CppEditorWidget *editorWidget = data.editorWidget();
     if (!editorWidget)
         return processLinkCallback(link);
 
diff --git a/src/plugins/cppeditor/cppfunctiondecldeflink.h b/src/plugins/cppeditor/cppfunctiondecldeflink.h
index ab65438353..959b38b307 100644
--- a/src/plugins/cppeditor/cppfunctiondecldeflink.h
+++ b/src/plugins/cppeditor/cppfunctiondecldeflink.h
@@ -35,9 +35,10 @@
 #include <QTextCursor>
 
 namespace CppEditor {
+class CppEditorWidget;
+
 namespace Internal {
 
-class CppEditorWidget;
 class FunctionDeclDefLink;
 
 class FunctionDeclDefLinkFinder : public QObject
diff --git a/src/plugins/cppeditor/cppquickfixassistant.h b/src/plugins/cppeditor/cppquickfixassistant.h
index 14cca429e7..754e15f2f3 100644
--- a/src/plugins/cppeditor/cppquickfixassistant.h
+++ b/src/plugins/cppeditor/cppquickfixassistant.h
@@ -34,13 +34,12 @@
 
 
 namespace CppEditor {
+class CppEditorWidget;
 class CppRefactoringFile;
 using CppRefactoringFilePtr = QSharedPointer<CppRefactoringFile>;
 
 namespace Internal {
 
-class CppEditorWidget;
-
 class CppQuickFixInterface : public TextEditor::AssistInterface
 {
 public:
diff --git a/src/plugins/cppeditor/cpprefactoringengine.cpp b/src/plugins/cppeditor/cpprefactoringengine.cpp
index 9879d44851..653598143f 100644
--- a/src/plugins/cppeditor/cpprefactoringengine.cpp
+++ b/src/plugins/cppeditor/cpprefactoringengine.cpp
@@ -26,6 +26,7 @@
 #include "cpprefactoringengine.h"
 
 #include "cppcanonicalsymbol.h"
+#include "cppeditorwidget.h"
 #include "cppmodelmanager.h"
 #include "cppsemanticinfo.h"
 #include "cpptoolsreuse.h"
@@ -42,7 +43,7 @@ void CppRefactoringEngine::startLocalRenaming(const CursorInEditor &data,
                                               const ProjectPart *,
                                               RenameCallback &&renameSymbolsCallback)
 {
-    CppEditorWidgetInterface *editorWidget = data.editorWidget();
+    CppEditorWidget *editorWidget = data.editorWidget();
     QTC_ASSERT(editorWidget, renameSymbolsCallback(QString(),
                                                    ClangBackEnd::SourceLocationsContainer(),
                                                    0); return;);
@@ -61,7 +62,7 @@ void CppRefactoringEngine::globalRename(const CursorInEditor &data,
     if (!modelManager)
         return;
 
-    CppEditorWidgetInterface *editorWidget = data.editorWidget();
+    CppEditorWidget *editorWidget = data.editorWidget();
     QTC_ASSERT(editorWidget, return;);
 
     SemanticInfo info = editorWidget->semanticInfo();
@@ -85,7 +86,7 @@ void CppRefactoringEngine::findUsages(const CursorInEditor &data,
     if (!modelManager)
         return;
 
-    CppEditorWidgetInterface *editorWidget = data.editorWidget();
+    CppEditorWidget *editorWidget = data.editorWidget();
     QTC_ASSERT(editorWidget, return;);
 
     SemanticInfo info = editorWidget->semanticInfo();
diff --git a/src/plugins/cppeditor/cpptypehierarchy.h b/src/plugins/cppeditor/cpptypehierarchy.h
index 23346308c6..599f8a2cb2 100644
--- a/src/plugins/cppeditor/cpptypehierarchy.h
+++ b/src/plugins/cppeditor/cpptypehierarchy.h
@@ -53,9 +53,10 @@ class ProgressIndicator;
 }
 
 namespace CppEditor {
+class CppEditorWidget;
+
 namespace Internal {
 class CppClass;
-class CppEditorWidget;
 class CppElement;
 
 class CppTypeHierarchyModel : public QStandardItemModel
diff --git a/src/plugins/cppeditor/cppuseselectionsupdater.h b/src/plugins/cppeditor/cppuseselectionsupdater.h
index d968c8df80..925b3fba2e 100644
--- a/src/plugins/cppeditor/cppuseselectionsupdater.h
+++ b/src/plugins/cppeditor/cppuseselectionsupdater.h
@@ -33,10 +33,10 @@
 #include <QTimer>
 
 namespace CppEditor {
-namespace Internal {
-
 class CppEditorWidget;
 
+namespace Internal {
+
 class CppUseSelectionsUpdater : public QObject
 {
     Q_OBJECT
diff --git a/src/plugins/cppeditor/cursorineditor.h b/src/plugins/cppeditor/cursorineditor.h
index c4d2047226..6bd2e83af2 100644
--- a/src/plugins/cppeditor/cursorineditor.h
+++ b/src/plugins/cppeditor/cursorineditor.h
@@ -25,8 +25,6 @@
 
 #pragma once
 
-#include "cppeditorwidgetinterface.h"
-
 #include <utils/fileutils.h>
 
 #include <QTextCursor>
@@ -34,26 +32,27 @@
 namespace TextEditor { class TextDocument; }
 
 namespace CppEditor {
+class CppEditorWidget;
 
 class CursorInEditor
 {
 public:
     CursorInEditor(const QTextCursor &cursor, const Utils::FilePath &filePath,
-                 CppEditorWidgetInterface *editorWidget = nullptr,
+                 CppEditorWidget *editorWidget = nullptr,
                  TextEditor::TextDocument *textDocument = nullptr)
         : m_cursor(cursor)
         , m_filePath(filePath)
         , m_editorWidget(editorWidget)
         , m_textDocument(textDocument)
     {}
-    CppEditorWidgetInterface *editorWidget() const { return m_editorWidget; }
+    CppEditorWidget *editorWidget() const { return m_editorWidget; }
     TextEditor::TextDocument *textDocument() const { return m_textDocument; }
     const QTextCursor &cursor() const { return m_cursor; }
     const Utils::FilePath &filePath() const { return m_filePath; }
 private:
     QTextCursor m_cursor;
     Utils::FilePath m_filePath;
-    CppEditorWidgetInterface *m_editorWidget = nullptr;
+    CppEditorWidget *m_editorWidget = nullptr;
     TextEditor::TextDocument * const m_textDocument;
 };
 
diff --git a/src/plugins/cppeditor/followsymbol_switchmethoddecldef_test.cpp b/src/plugins/cppeditor/followsymbol_switchmethoddecldef_test.cpp
index 4a94df6603..053653e2ca 100644
--- a/src/plugins/cppeditor/followsymbol_switchmethoddecldef_test.cpp
+++ b/src/plugins/cppeditor/followsymbol_switchmethoddecldef_test.cpp
@@ -404,7 +404,7 @@ F2TestCase::F2TestCase(CppEditorAction action,
         if (!builtinFollowSymbol) {
             if (curTestName == "testFollowSymbolQTCREATORBUG7903")
                 QSKIP((curTestName + " is not supported by Clang FollowSymbol").toLatin1());
-            widget->inTestMode = true;
+            widget->enableTestMode();
             widget->openLinkUnderCursor();
             break;
         }