loplugin:useuniqueptr in TextWindow

Change-Id: I66c966f79d56be5dfc1422fa3de52d9bf4411ff2
Reviewed-on: https://gerrit.libreoffice.org/53348Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

include/vcl/vclmedit.hxx

@@ -36,8 +36,8 @@ class TextWindow : public vcl::Window
 {
 private:
     VclPtr<Edit>    mxParent;
-    ExtTextEngine*  mpExtTextEngine;
-    TextView*       mpExtTextView;
+    std::unique_ptr<ExtTextEngine> mpExtTextEngine;
+    std::unique_ptr<TextView> mpExtTextView;
 
     bool            mbInMBDown;
     bool            mbFocusSelectionHide;
@@ -50,8 +50,8 @@ public:
     virtual         ~TextWindow() override;
     virtual void    dispose() override;
 
-    ExtTextEngine*  GetTextEngine() const { return mpExtTextEngine; }
-    TextView*       GetTextView() const { return mpExtTextView; }
+    ExtTextEngine*  GetTextEngine() const { return mpExtTextEngine.get(); }
+    TextView*       GetTextView() const { return mpExtTextView.get(); }
 
     virtual void    MouseMove( const MouseEvent& rMEvt ) override;
     virtual void    MouseButtonDown( const MouseEvent& rMEvt ) override;

vcl/source/edit/vclmedit.cxx

@@ -672,13 +672,13 @@ TextWindow::TextWindow(Edit* pParent)
 
     SetPointer( Pointer( PointerStyle::Text ) );
 
-    mpExtTextEngine = new ExtTextEngine;
+    mpExtTextEngine.reset(new ExtTextEngine);
     mpExtTextEngine->SetMaxTextLen(EDIT_NOLIMIT);
     if( pParent->GetStyle() & WB_BORDER )
         mpExtTextEngine->SetLeftMargin( 2 );
     mpExtTextEngine->SetLocale( GetSettings().GetLanguageTag().getLocale() );
-    mpExtTextView = new TextView( mpExtTextEngine, this );
-    mpExtTextEngine->InsertView( mpExtTextView );
+    mpExtTextView.reset(new TextView( mpExtTextEngine.get(), this ));
+    mpExtTextEngine->InsertView( mpExtTextView.get() );
     mpExtTextEngine->EnableUndo( true );
     mpExtTextView->ShowCursor();
 
@@ -695,10 +695,8 @@ TextWindow::~TextWindow()
 void TextWindow::dispose()
 {
     mxParent.clear();
-    delete mpExtTextView;
-    mpExtTextView = nullptr;
-    delete mpExtTextEngine;
-    mpExtTextEngine = nullptr;
+    mpExtTextView.reset();
+    mpExtTextEngine.reset();
     Window::dispose();
 }