tdf#148522 svx: fix undo of cell border changes text alignment in other cells

The Impress table properties dialog has multiple purposes: normally it
only affects the properties of the currently active cell, but shadow is
applied on the whole shape.

Regression from commit fdeb04f7c59cf8032fe17072ed779e70505cc6ab
(tdf#129961 svx: finish UI for table shadow as direct format,
2020-12-15), we started to apply properties to the current cell, and
then to the whole shape as well, unconditionally. This affects
undo/redo, as there is a separate undo manager while the text edit of a
table cell is active and when the text edit is ended.

Fix the problem by only applying properties on the shape when there we
actually have some properties: this way the text edit is typically not
ended, bringing back the old undo/redo behavior.

Note that we still need to end the text edit if the user explicitly sets
some shadow properties, that part is unchanged with this commit.

Change-Id: I78e28bd326a2c12c3775b33957adca4cd95ac582
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/136357
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Tested-by: Jenkins
(cherry picked from commit 3edfbc19950610bb2061d29cb58b3811b1a0b1a5)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/136460
Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>
(cherry picked from commit 750568d77812202c9c01fa87945b507a358c6db5)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/136468

2 files changed, 45 insertions, 0 deletions

diff --git a/svx/qa/unit/table.cxx b/svx/qa/unit/table.cxx
index c82f331f2d17..c68abe18beea 100644
--- a/svx/qa/unit/table.cxx
+++ b/svx/qa/unit/table.cxx
@@ -24,6 +24,11 @@
 #include <svx/unopage.hxx>
 #include <vcl/virdev.hxx>
 #include <sdr/contact/objectcontactofobjlistpainter.hxx>
+#include <comphelper/propertyvalue.hxx>
+#include <sfx2/viewsh.hxx>
+#include <svx/svdview.hxx>
+#include <svx/sdr/table/tablecontroller.hxx>
+#include <editeng/editobj.hxx>
 
 using namespace ::com::sun::star;
 
@@ -99,6 +104,39 @@ CPPUNIT_TEST_FIXTURE(Test, testTableShadowBlur)
     // itself and the transparency of the cell fill.
     assertXPath(pDocument, "//objectinfo/unifiedtransparence[1]", "transparence", "80");
 }
+
+CPPUNIT_TEST_FIXTURE(Test, testSvxTableControllerSetAttrToSelectedShape)
+{
+    // Given a document with a table shape, editing cell text:
+    getComponent() = loadFromDesktop("private:factory/simpress",
+                                     "com.sun.star.presentation.PresentationDocument");
+    uno::Sequence<beans::PropertyValue> aArgs
+        = { comphelper::makePropertyValue("Rows", sal_Int32(2)),
+            comphelper::makePropertyValue("Columns", sal_Int32(2)) };
+    dispatchCommand(mxComponent, ".uno:InsertTable", aArgs);
+    uno::Reference<drawing::XDrawPagesSupplier> xDrawPagesSupplier(getComponent(), uno::UNO_QUERY);
+    uno::Reference<drawing::XDrawPage> xDrawPage(xDrawPagesSupplier->getDrawPages()->getByIndex(0),
+                                                 uno::UNO_QUERY);
+    auto pDrawPage = dynamic_cast<SvxDrawPage*>(xDrawPage.get());
+    CPPUNIT_ASSERT(pDrawPage);
+    SdrPage* pSdrPage = pDrawPage->GetSdrPage();
+    auto pSdrObject
+        = dynamic_cast<sdr::table::SdrTableObj*>(pSdrPage->GetObj(pSdrPage->GetObjCount() - 1));
+    SfxViewShell* pViewShell = SfxViewShell::Current();
+    SdrView* pSdrView = pViewShell->GetDrawView();
+    pSdrView->SdrBeginTextEdit(pSdrObject);
+    CPPUNIT_ASSERT(pSdrView->IsTextEdit());
+    const EditTextObject& rEdit = pSdrObject->getText(0)->GetOutlinerParaObject()->GetTextObject();
+    SfxItemSet aSet(rEdit.GetParaAttribs(0));
+    auto pTableController
+        = dynamic_cast<sdr::table::SvxTableController*>(pSdrView->getSelectionController().get());
+
+    // When applying attributes which only affect the cell text, not the table shape:
+    pTableController->SetAttrToSelectedShape(aSet);
+
+    // Then make sure the text edit is not ended:
+    CPPUNIT_ASSERT(pSdrView->IsTextEdit());
+}
 }
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/svx/source/table/tablecontroller.cxx b/svx/source/table/tablecontroller.cxx
index d11b22988148..42712b09296f 100644
--- a/svx/source/table/tablecontroller.cxx
+++ b/svx/source/table/tablecontroller.cxx
@@ -2752,6 +2752,13 @@ void SvxTableController::SetAttrToSelectedShape(const SfxItemSet& rAttr)
     SfxItemSetFixed<SDRATTR_SHADOW_FIRST, SDRATTR_SHADOW_LAST> aSet(*rAttr.GetPool());
     aSet.Put(rAttr);
 
+    if (!aSet.Count())
+    {
+        // If there are no items to be applied on the shape, then don't set anything, it would
+        // terminate text edit without a good reason, which affects undo/redo.
+        return;
+    }
+
     // Set shadow items on the marked shape.
     mrView.SetAttrToMarked(aSet, /*bReplaceAll=*/false);
 }