CppEditor: Fix inserting completion while in (local) rename mode

Fixes case 1 of QTCREATORBUG-14633.

Task-number: QTCREATORBUG-14633
Change-Id: I1f57b8f831613668b85948f4ec588c4cf441b633
Reviewed-by: David Schulz <david.schulz@theqtcompany.com>

src/plugins/cppeditor/cppeditor.cpp

@@ -723,6 +723,14 @@ FollowSymbolUnderCursor *CppEditorWidget::followSymbolUnderCursorDelegate()
     return d->m_followSymbolUnderCursor.data();
 }
 
+void CppEditorWidget::encourageApply()
+{
+    if (d->m_localRenaming.encourageApply())
+        return;
+
+    TextEditorWidget::encourageApply();
+}
+
 void CppEditorWidget::abortDeclDefLink()
 {
     if (!d->m_declDefLink)

src/plugins/cppeditor/cppeditor.h

@@ -83,6 +83,8 @@ public:
 
     FollowSymbolUnderCursor *followSymbolUnderCursorDelegate(); // exposed for tests
 
+    void encourageApply() override;
+
 public slots:
     void paste() override;
     void cut() override;

src/plugins/cppeditor/cpplocalrenaming.cpp

@@ -210,6 +210,14 @@ bool CppLocalRenaming::handleKeyPressEvent(QKeyEvent *e)
     return true;
 }
 
+bool CppLocalRenaming::encourageApply()
+{
+    if (!isActive())
+        return false;
+    finishRenameChange();
+    return true;
+}
+
 QTextEdit::ExtraSelection &CppLocalRenaming::renameSelection()
 {
     return m_selections[m_renameSelectionIndex];

src/plugins/cppeditor/cpplocalrenaming.h

@@ -61,6 +61,8 @@ public:
     // to BaseTextEditorWidget::keyPressEvent()
     bool handleKeyPressEvent(QKeyEvent *e);
 
+    bool encourageApply();
+
 public slots:
     void updateSelectionsForVariableUnderCursor(const QList<QTextEdit::ExtraSelection> &selections);