editeng: track view shells in SfxListUndoActions

This is needed for e.g. tracking deletions by backspace in Writer shape
text.

Change-Id: I6f873872566313096c2c57f4a13ac2f1db67e77d
Reviewed-on: https://gerrit.libreoffice.org/27807
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Jenkins <ci@libreoffice.org>

editeng/source/editeng/impedit.hxx

@@ -685,6 +685,8 @@ private:
     void ImplUpdateOverflowingLineNum( sal_uInt32, sal_uInt32, sal_uInt32 );
 
     SpellInfo *     CreateSpellInfo( bool bMultipleDocs );
+    /// Obtains a view shell ID from the active EditView.
+    sal_Int32 CreateViewShellId();
 
     ImpEditEngine(EditEngine* pEditEngine, SfxItemPool* pPool);
     void InitDoc(bool bKeepParaAttribs);

editeng/source/editeng/impedit5.cxx

@@ -222,11 +222,23 @@ EditUndoSetAttribs* ImpEditEngine::CreateAttribUndo( EditSelection aSel, const S
     return pUndo;
 }
 
+sal_Int32 ImpEditEngine::CreateViewShellId()
+{
+    sal_Int32 nRet = -1;
+
+    const EditView* pEditView = pEditEngine ? pEditEngine->GetActiveView() : nullptr;
+    const OutlinerViewShell* pViewShell = pEditView ? pEditView->GetImpEditView()->GetViewShell() : nullptr;
+    if (pViewShell)
+        nRet = pViewShell->GetViewShellId();
+
+    return nRet;
+}
+
 void ImpEditEngine::UndoActionStart( sal_uInt16 nId, const ESelection& aSel )
 {
     if ( IsUndoEnabled() && !IsInUndo() )
     {
-        GetUndoManager().EnterListAction( GetEditEnginePtr()->GetUndoComment( nId ), OUString(), nId, -1 );
+        GetUndoManager().EnterListAction( GetEditEnginePtr()->GetUndoComment( nId ), OUString(), nId, CreateViewShellId() );
         DBG_ASSERT( !pUndoMarkSelection, "UndoAction SelectionMarker?" );
         pUndoMarkSelection = new ESelection( aSel );
     }
@@ -236,7 +248,7 @@ void ImpEditEngine::UndoActionStart( sal_uInt16 nId )
 {
     if ( IsUndoEnabled() && !IsInUndo() )
     {
-        GetUndoManager().EnterListAction( GetEditEnginePtr()->GetUndoComment( nId ), OUString(), nId, -1 );
+        GetUndoManager().EnterListAction( GetEditEnginePtr()->GetUndoComment( nId ), OUString(), nId, CreateViewShellId() );
         DBG_ASSERT( !pUndoMarkSelection, "UndoAction SelectionMarker?" );
     }
 }

sw/qa/extras/tiledrendering/tiledrendering.cxx

@@ -61,6 +61,7 @@ public:
     void testTextEditViewInvalidations();
     void testUndoInvalidations();
     void testShapeTextUndoShells();
+    void testShapeTextUndoGroupShells();
 
     CPPUNIT_TEST_SUITE(SwTiledRenderingTest);
     CPPUNIT_TEST(testRegisterCallback);
@@ -87,6 +88,7 @@ public:
     CPPUNIT_TEST(testTextEditViewInvalidations);
     CPPUNIT_TEST(testUndoInvalidations);
     CPPUNIT_TEST(testShapeTextUndoShells);
+    CPPUNIT_TEST(testShapeTextUndoGroupShells);
     CPPUNIT_TEST_SUITE_END();
 
 private:
@@ -921,6 +923,36 @@ void SwTiledRenderingTest::testShapeTextUndoShells()
     comphelper::LibreOfficeKit::setActive(false);
 }
 
+void SwTiledRenderingTest::testShapeTextUndoGroupShells()
+{
+    // Load a document and create a view.
+    comphelper::LibreOfficeKit::setActive();
+    SwXTextDocument* pXTextDocument = createDoc("shape.fodt");
+    sal_Int32 nView1 = SfxLokHelper::getView();
+
+    // Begin text edit.
+    SwWrtShell* pWrtShell = pXTextDocument->GetDocShell()->GetWrtShell();
+    SdrPage* pPage = pWrtShell->GetDoc()->getIDocumentDrawModelAccess().GetDrawModel()->GetPage(0);
+    SdrObject* pObject = pPage->GetObj(0);
+    SdrView* pView = pWrtShell->GetDrawView();
+    pWrtShell->GetView().BeginTextEdit(pObject, pView->GetSdrPageView(), pWrtShell->GetWin());
+    pXTextDocument->postKeyEvent(LOK_KEYEVENT_KEYINPUT, 'x', 0);
+    pXTextDocument->postKeyEvent(LOK_KEYEVENT_KEYUP, 'x', 0);
+    pXTextDocument->postKeyEvent(LOK_KEYEVENT_KEYINPUT, 0, awt::Key::BACKSPACE);
+    pXTextDocument->postKeyEvent(LOK_KEYEVENT_KEYUP, 0, awt::Key::BACKSPACE);
+
+    // Make sure that the undo item remembers who created it.
+    SwDoc* pDoc = pXTextDocument->GetDocShell()->GetDoc();
+    sw::UndoManager& rUndoManager = pDoc->GetUndoManager();
+    CPPUNIT_ASSERT_EQUAL(static_cast<size_t>(2), rUndoManager.GetUndoActionCount());
+    // This was -1: the view shell id for the (top) undo list action wasn't known.
+    CPPUNIT_ASSERT_EQUAL(nView1, rUndoManager.GetUndoAction()->GetViewShellId());
+
+    mxComponent->dispose();
+    mxComponent.clear();
+    comphelper::LibreOfficeKit::setActive(false);
+}
+
 CPPUNIT_TEST_SUITE_REGISTRATION(SwTiledRenderingTest);
 
 CPPUNIT_PLUGIN_IMPLEMENT();