SwXShape: add ChainNext/PrevName UNO property

At the moment it's only possible to set this property, and it only sets
the same property of the underlying textbox, if there is any.

Change-Id: I9f168f69a8e92a1b26f21e653a05c97e2e32297c

sw/source/core/doc/textboxhelper.cxx

@@ -351,6 +351,17 @@ void SwTextBoxHelper::syncProperty(SwFrmFmt* pShape, sal_uInt16 nWID, sal_uInt8
                 }
             }
             break;
+        case RES_CHAIN:
+            switch (nMemberId)
+            {
+            case MID_CHAIN_PREVNAME:
+                aPropertyName = UNO_NAME_CHAIN_PREV_NAME;
+                break;
+            case MID_CHAIN_NEXTNAME:
+                aPropertyName = UNO_NAME_CHAIN_NEXT_NAME;
+                break;
+            }
+            break;
         }
 
         if (!aPropertyName.isEmpty())

sw/source/core/unocore/unodraw.cxx

@@ -1201,6 +1201,11 @@ void SwXShape::setPropertyValue(const OUString& rPropertyName, const uno::Any& a
                         SwTextBoxHelper::destroy(pFmt);
 
                 }
+                else if (pEntry->nWID == RES_CHAIN)
+                {
+                    if (pEntry->nMemberId == MID_CHAIN_NEXTNAME || pEntry->nMemberId == MID_CHAIN_PREVNAME)
+                        SwTextBoxHelper::syncProperty(pFmt, pEntry->nWID, pEntry->nMemberId, aValue);
+                }
                 // #i28749#
                 else if ( FN_SHAPE_POSITION_LAYOUT_DIR == pEntry->nWID )
                 {

sw/source/core/unocore/unomap.cxx

@@ -1396,6 +1396,8 @@ const SfxItemPropertyMapEntry* SwUnoPropertyMapProvider::GetPropertyMapEntries(s
                     { OUString(UNO_NAME_RELATIVE_WIDTH), RES_FRM_SIZE,      cppu::UnoType<sal_Int16>::get()  ,         PROPERTY_NONE, MID_FRMSIZE_REL_WIDTH  },
                     { OUString(UNO_NAME_RELATIVE_WIDTH_RELATION), RES_FRM_SIZE, cppu::UnoType<sal_Int16>::get(),       PROPERTY_NONE, MID_FRMSIZE_REL_WIDTH_RELATION },
                     { OUString(UNO_NAME_TEXT_BOX), FN_TEXT_BOX, cppu::UnoType<bool>::get(), PROPERTY_NONE, 0},
+                    { OUString(UNO_NAME_CHAIN_NEXT_NAME), RES_CHAIN,                cppu::UnoType<OUString>::get(),            PropertyAttribute::MAYBEVOID ,MID_CHAIN_NEXTNAME},
+                    { OUString(UNO_NAME_CHAIN_PREV_NAME), RES_CHAIN,                cppu::UnoType<OUString>::get(),            PropertyAttribute::MAYBEVOID ,MID_CHAIN_PREVNAME},
                     { OUString(), 0, css::uno::Type(), 0, 0 }
                 };
                 aMapEntriesArr[nPropertyId] = aShapeMap_Impl;