starmath: allow UNO import of MathType

com.sun.star.comp.Math.XMLImporter already handled MathML import, but
MathType was not possible externally.

Change-Id: I5bf7181758a12eeaa576d016d3704a771ac5a8ba

starmath/Library_sm.mk

@@ -88,6 +88,7 @@ $(eval $(call gb_Library_add_exception_objects,sm,\
         starmath/source/tmpdevice \
         starmath/source/typemap \
         starmath/source/unodoc \
+        starmath/source/unofilter \
         starmath/source/unomodel \
         starmath/source/utility \
         starmath/source/view \

starmath/source/unofilter.cxx

+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <memory>
+
+#include <com/sun/star/document/XFilter.hpp>
+#include <com/sun/star/document/XImporter.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <cppuhelper/implbase.hxx>
+#include <sot/storage.hxx>
+#include <tools/stream.hxx>
+#include <unotools/mediadescriptor.hxx>
+#include <unotools/ucbstreamhelper.hxx>
+
+#include <document.hxx>
+#include <mathtype.hxx>
+#include <unomodel.hxx>
+
+using namespace ::com::sun::star;
+
+/// Invokes the MathType importer via UNO.
+class MathTypeFilter : public cppu::WeakImplHelper
+    <
+    document::XFilter,
+    document::XImporter,
+    lang::XServiceInfo
+    >
+{
+    uno::Reference<uno::XComponentContext> m_xContext;
+    uno::Reference<lang::XComponent> m_xDstDoc;
+
+public:
+    MathTypeFilter(const uno::Reference<uno::XComponentContext>& xContext);
+    virtual ~MathTypeFilter();
+
+    // XFilter
+    virtual sal_Bool SAL_CALL filter(const uno::Sequence<beans::PropertyValue>& rDescriptor) throw (uno::RuntimeException, std::exception) SAL_OVERRIDE;
+    virtual void SAL_CALL cancel() throw (uno::RuntimeException, std::exception) SAL_OVERRIDE;
+
+    // XImporter
+    virtual void SAL_CALL setTargetDocument(const uno::Reference<lang::XComponent>& xDoc) throw (lang::IllegalArgumentException, uno::RuntimeException, std::exception) SAL_OVERRIDE;
+
+    // XServiceInfo
+    virtual OUString SAL_CALL getImplementationName() throw (uno::RuntimeException, std::exception) SAL_OVERRIDE;
+    virtual sal_Bool SAL_CALL supportsService(const OUString& ServiceName) throw (uno::RuntimeException, std::exception) SAL_OVERRIDE;
+    virtual uno::Sequence<OUString> SAL_CALL getSupportedServiceNames() throw (uno::RuntimeException, std::exception) SAL_OVERRIDE;
+};
+
+MathTypeFilter::MathTypeFilter(const uno::Reference< uno::XComponentContext >& rxContext)
+    : m_xContext(rxContext)
+{
+}
+
+MathTypeFilter::~MathTypeFilter()
+{
+}
+
+sal_Bool MathTypeFilter::filter(const uno::Sequence<beans::PropertyValue>& rDescriptor) throw(uno::RuntimeException, std::exception)
+{
+    bool bSuccess = false;
+    utl::MediaDescriptor aMediaDesc(rDescriptor);
+    aMediaDesc.addInputStream();
+    uno::Reference<io::XInputStream> xInputStream;
+    aMediaDesc[utl::MediaDescriptor::PROP_INPUTSTREAM()] >>= xInputStream;
+    std::unique_ptr<SvStream> pStream(utl::UcbStreamHelper::CreateStream(xInputStream));
+    if (pStream)
+    {
+        if (SotStorage::IsStorageFile(pStream.get()))
+        {
+            SvStorageRef aStorage(new SotStorage(pStream.get(), false));
+            // Is this a MathType Storage?
+            if (aStorage->IsStream(OUString("Equation Native")))
+            {
+                if (SmModel* pModel = dynamic_cast<SmModel*>(m_xDstDoc.get()))
+                {
+                    SmDocShell* pDocShell = static_cast<SmDocShell*>(pModel->GetObjectShell());
+                    OUString aText = pDocShell->GetText();
+                    MathType aEquation(aText);
+                    bSuccess = aEquation.Parse(aStorage) == 1;
+                    if (bSuccess)
+                    {
+                        pDocShell->SetText(aText);
+                        pDocShell->Parse();
+                    }
+                }
+            }
+        }
+    }
+    return bSuccess;
+}
+
+void MathTypeFilter::cancel() throw(uno::RuntimeException, std::exception)
+{
+}
+
+void MathTypeFilter::setTargetDocument(const uno::Reference< lang::XComponent >& xDoc) throw(lang::IllegalArgumentException, uno::RuntimeException, std::exception)
+{
+    m_xDstDoc = xDoc;
+}
+
+OUString MathTypeFilter::getImplementationName() throw(uno::RuntimeException, std::exception)
+{
+    return OUString("com.sun.star.comp.Math.MathTypeFilter");
+}
+
+sal_Bool MathTypeFilter::supportsService(const OUString& rServiceName) throw(uno::RuntimeException, std::exception)
+{
+    return cppu::supportsService(this, rServiceName);
+}
+
+uno::Sequence<OUString> MathTypeFilter::getSupportedServiceNames() throw(uno::RuntimeException, std::exception)
+{
+    uno::Sequence<OUString> aRet =
+    {
+        OUString("com.sun.star.document.ImportFilter")
+    };
+    return aRet;
+}
+
+extern "C" SAL_DLLPUBLIC_EXPORT uno::XInterface* SAL_CALL com_sun_star_comp_Math_MathTypeFilter_get_implementation(uno::XComponentContext* pComponent, uno::Sequence<uno::Any> const&)
+{
+    return cppu::acquire(new MathTypeFilter(pComponent));
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */

starmath/util/sm.component

@@ -49,4 +49,8 @@
   <implementation name="com.sun.star.comp.Math.XMLSettingsExporter">
     <service name="com.sun.star.xml.XMLExportFilter"/>
   </implementation>
+  <implementation name="com.sun.star.comp.Math.MathTypeFilter"
+        constructor="com_sun_star_comp_Math_MathTypeFilter_get_implementation">
+    <service name="com.sun.star.document.ImportFilter"/>
+  </implementation>
 </component>