try to retrieve the .fm3 file when reading a .wp3 file

Change-Id: Ib2c2af423b92a65c08c2647a1e931ea54228c203

writerperfect/Library_wpftcalc.mk

@@ -36,6 +36,7 @@ $(eval $(call gb_Library_use_libraries,wpftcalc,\
 	sot \
 	svx \
 	tl \
+	ucbhelper \
 	utl \
 	vcl \
 	writerperfect \

writerperfect/inc/ImportFilter.hxx

@@ -64,6 +64,11 @@ public:
     {
     }
 
+    const css::uno::Reference< css::uno::XComponentContext > &getXContext() const
+    {
+        return mxContext;
+    }
+
     // XFilter
     virtual sal_Bool SAL_CALL filter(const css::uno::Sequence< css::beans::PropertyValue > &rDescriptor)
     throw (css::uno::RuntimeException, std::exception) override
@@ -107,6 +112,10 @@ public:
     }
 
     // XImporter
+    const css::uno::Reference< css::lang::XComponent > &getTargetDocument() const
+    {
+        return mxDoc;
+    }
     virtual void SAL_CALL setTargetDocument(const css::uno::Reference< css::lang::XComponent > &xDoc)
     throw (css::lang::IllegalArgumentException, css::uno::RuntimeException, std::exception) override
     {

writerperfect/source/calc/MSWorksCalcImportFilter.hxx

@@ -34,6 +34,9 @@ public:
     virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames()
     throw (css::uno::RuntimeException, std::exception) override;
 
+    //XFilter
+    virtual sal_Bool SAL_CALL filter(const css::uno::Sequence< css::beans::PropertyValue > &rDescriptor)
+    throw (css::uno::RuntimeException, std::exception) override;
 private:
     virtual bool doDetectFormat(librevenge::RVNGInputStream &rInput, OUString &rTypeName) override;
     virtual bool doImportDocument(librevenge::RVNGInputStream &rInput, OdsGenerator &rGenerator, utl::MediaDescriptor &) override;