TextEditor: Update circular clipboard on cut

Task-number: QTCREATORBUG-8713
Change-Id: Ic83c78a4caf7f768259c8f6830e7b81016c70e5e
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>
Reviewed-by: David Schulz <david.schulz@digia.com>

src/plugins/texteditor/basetexteditor.cpp

@@ -5804,6 +5804,7 @@ void BaseTextEditorWidget::cut()
         return;
     }
     QPlainTextEdit::cut();
+    collectToCircularClipboard();
 }
 
 void BaseTextEditorWidget::selectAll()
@@ -5818,14 +5819,18 @@ void BaseTextEditorWidget::copy()
         return;
 
     QPlainTextEdit::copy();
+    collectToCircularClipboard();
+}
 
+void BaseTextEditorWidget::collectToCircularClipboard()
+{
     const QMimeData *mimeData = QApplication::clipboard()->mimeData();
-    if (mimeData) {
+    if (!mimeData)
+        return;
     CircularClipboard *circularClipBoard = CircularClipboard::instance();
     circularClipBoard->collect(duplicateMimeData(mimeData));
     // We want the latest copied content to be the first one to appear on circular paste.
     circularClipBoard->toLastCollect();
-    }
 }
 
 void BaseTextEditorWidget::paste()

src/plugins/texteditor/basetexteditor.h

@@ -355,6 +355,7 @@ protected:
 private:
     void maybeSelectLine();
     void updateCannotDecodeInfo();
+    void collectToCircularClipboard();
 
 public:
     void duplicateFrom(BaseTextEditorWidget *editor);