fod#77122 DOCX filter: link between textboxes is not being preserved

Added support for linked textboxes for docx interoperability.

Reviewed on:
	https://gerrit.libreoffice.org/9092

Change-Id: I7db4f5a1783afff53c64908d182788b262f5e863

3 files changed, 54 insertions, 1 deletions

diff --git a/oox/source/drawingml/shape.cxx b/oox/source/drawingml/shape.cxx
index f7150db048d1..1d0d4525801f 100644
--- a/oox/source/drawingml/shape.cxx
+++ b/oox/source/drawingml/shape.cxx
@@ -139,6 +139,8 @@ Shape::Shape( const ShapePtr& pSourceShape )
 , mbHiddenMasterShape( pSourceShape->mbHiddenMasterShape )
 , mbLockedCanvas( pSourceShape->mbLockedCanvas )
 , mbWps( pSourceShape->mbWps )
+, maLinkedTxbxAttr()
+, mbHasLinkedTxbx(false)
 , maDiagramDoms( pSourceShape->maDiagramDoms )
 {}
 
@@ -677,6 +679,23 @@ Reference< XShape > Shape::createAndInsert(
                     aGrabBag[length].Value = uno::makeAny(mpCustomShapePropertiesPtr->getShapePresetTypeName());
                     propertySet->setPropertyValue("FrameInteropGrabBag",uno::makeAny(aGrabBag));
                 }
+                //If the text box has links then save the link information so that
+                //it can be accessed in DomainMapper_Impl.cxx while chaining the text frames.
+                if (this->isLinkedTxbx())
+                {
+                    uno::Reference<beans::XPropertySet> propertySet (mxShape, uno::UNO_QUERY);
+                    uno::Sequence<beans::PropertyValue> aGrabBag;
+                    propertySet->getPropertyValue("FrameInteropGrabBag") >>= aGrabBag;
+                    sal_Int32 length = aGrabBag.getLength();
+                    aGrabBag.realloc( length + 3 );
+                    aGrabBag[length].Name = "TxbxHasLink";
+                    aGrabBag[length].Value = uno::makeAny(this->isLinkedTxbx());
+                    aGrabBag[length + 1 ].Name = "Txbx-Id";
+                    aGrabBag[length + 1 ].Value = uno::makeAny(this->getLinkedTxbxAttributes().id);
+                    aGrabBag[length + 2 ].Name = "Txbx-Seq";
+                    aGrabBag[length + 2 ].Value = uno::makeAny(this->getLinkedTxbxAttributes().seq);
+                    propertySet->setPropertyValue("FrameInteropGrabBag",uno::makeAny(aGrabBag));
+                }
 
                 // TextFrames have BackColor, not FillColor
                 if (aShapeProps.hasProperty(PROP_FillColor))
diff --git a/oox/source/shape/WpsContext.cxx b/oox/source/shape/WpsContext.cxx
index c30992d316ac..57237095c5e6 100644
--- a/oox/source/shape/WpsContext.cxx
+++ b/oox/source/shape/WpsContext.cxx
@@ -109,9 +109,42 @@ oox::core::ContextHandlerRef WpsContext::onCreateContext(sal_Int32 nElementToken
     }
     break;
     case XML_txbx:
+    {
         mpShape->getCustomShapeProperties()->setShapeTypeOverride(true);
         mpShape->setServiceName("com.sun.star.text.TextFrame");
-        break;
+        //in case if the textbox is linked, save the attributes
+        //for further processing.
+        if (rAttribs.hasAttribute(XML_id))
+        {
+            OptValue<OUString> id = rAttribs.getString(XML_id);
+            if (id.has())
+            {
+                oox::drawingml::LinkedTxbxAttr linkedTxtBoxAttr ;
+                linkedTxtBoxAttr.id = id.get().toInt32();
+                mpShape->setTxbxHasLinkedTxtBox(true);
+                mpShape->setLinkedTxbxAttributes(linkedTxtBoxAttr);
+            }
+        }
+    }
+    break;
+    case XML_linkedTxbx:
+    {
+        //in case if the textbox is linked, save the attributes
+        //for further processing.
+        mpShape->getCustomShapeProperties()->setShapeTypeOverride(true);
+        mpShape->setServiceName("com.sun.star.text.TextFrame");
+        OptValue<OUString> id  = rAttribs.getString(XML_id);
+        OptValue<OUString> seq = rAttribs.getString(XML_seq);
+        if (id.has() && seq.has())
+        {
+            oox::drawingml::LinkedTxbxAttr linkedTxtBoxAttr ;
+            linkedTxtBoxAttr.id  = id.get().toInt32();
+            linkedTxtBoxAttr.seq = seq.get().toInt32();
+            mpShape->setTxbxHasLinkedTxtBox(true);
+            mpShape->setLinkedTxbxAttributes(linkedTxtBoxAttr);
+        }
+    }
+    break;
     default:
         SAL_WARN("oox", "WpsContext::createFastChildContext: unhandled element: " << getBaseToken(nElementToken));
         break;
diff --git a/oox/source/token/tokens.txt b/oox/source/token/tokens.txt
index e2740015a9b6..bab7cf1dc859 100644
--- a/oox/source/token/tokens.txt
+++ b/oox/source/token/tokens.txt
@@ -3074,6 +3074,7 @@ lines
 linesAndChars
 linestyle
 link
+linkedTxbx
 linkStyles
 linkTarget
 linkToQuery