Add Embind'ing of UNO Any getter for interfaces

Change-Id: Ia56439e0e99c193c7cc56676677df2c671278e24
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/164554
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <stephan.bergmann@allotropia.de>

2 files changed, 12 insertions, 2 deletions

diff --git a/static/source/embindmaker/embindmaker.cxx b/static/source/embindmaker/embindmaker.cxx
index f0f14b7e31aa..4241d10b1575 100644
--- a/static/source/embindmaker/embindmaker.cxx
+++ b/static/source/embindmaker/embindmaker.cxx
@@ -975,7 +975,9 @@ SAL_IMPLEMENT_MAIN()
             }
             dumpAttributes(cppOut, mgr, ifc, ifcEnt, {});
             dumpMethods(cppOut, mgr, ifc, ifcEnt, {});
-            cppOut << "        ;\n";
+            cppOut << "        ;\n"
+                      "    ::unoembindhelpers::registerUnoType<::com::sun::star::uno::Reference<"
+                   << cppName(ifc) << ">>();\n";
             dumpRegisterFunctionEpilog(cppOut, n);
             for (auto const& attr : ifcEnt->getDirectAttributes())
             {
diff --git a/static/source/unoembindhelpers/PrimaryBindings.cxx b/static/source/unoembindhelpers/PrimaryBindings.cxx
index 2e5ecac00054..985ebacc52b2 100644
--- a/static/source/unoembindhelpers/PrimaryBindings.cxx
+++ b/static/source/unoembindhelpers/PrimaryBindings.cxx
@@ -334,7 +334,15 @@ EMSCRIPTEN_BINDINGS(PrimaryBindings)
                         _emval_take_value(getTypeId(self.getValueType()), argv));
                 }
                 case css::uno::TypeClass_INTERFACE:
-                    return emscripten::val::undefined(); //TODO
+                {
+                    auto const ifc = *static_cast<css::uno::XInterface* const*>(self.getValue());
+                    auto const copy = std::malloc(sizeof(css::uno::XInterface*));
+                    *static_cast<css::uno::XInterface**>(copy) = ifc;
+                    ifc->acquire();
+                    emscripten::internal::WireTypePack argv(std::move(copy));
+                    return emscripten::val::take_ownership(
+                        _emval_take_value(getTypeId(self.getValueType()), argv));
+                }
                 default:
                     O3TL_UNREACHABLE;
             };