lok: Allow setting of the language during load.

Change-Id: I9dbb62950e639376c26122ceb9fcec2982b3ca82

5 files changed, 98 insertions, 1 deletions

diff --git a/desktop/CppunitTest_desktop_app.mk b/desktop/CppunitTest_desktop_app.mk
index b809b6a7e8c6..1e7e3e0813c5 100644
--- a/desktop/CppunitTest_desktop_app.mk
+++ b/desktop/CppunitTest_desktop_app.mk
@@ -34,6 +34,7 @@ $(eval $(call gb_CppunitTest_use_libraries,desktop_app, \
     salhelper \
     sb \
     sfx \
+    sofficeapp \
     svl \
     svx \
     svxcore \
diff --git a/desktop/inc/lib/init.hxx b/desktop/inc/lib/init.hxx
index bfe9954c3308..2dd4b51c8942 100644
--- a/desktop/inc/lib/init.hxx
+++ b/desktop/inc/lib/init.hxx
@@ -98,6 +98,11 @@ namespace desktop {
             return (mOptionalFeatures & feature) != 0;
         }
     };
+
+    /// Helper function to extract the value from parameters delimited by
+    /// comma, like: Name1=Value1,Name2=Value2,Name3=Value3.
+    /// @param rOptions When exctacted, the Param=Value is removed from it.
+    DESKTOP_DLLPUBLIC OUString extractParameter(OUString& aOptions, const OUString& rName);
 }
 
 #endif
diff --git a/desktop/qa/desktop_lib/test_desktop_lib.cxx b/desktop/qa/desktop_lib/test_desktop_lib.cxx
index 0f2d41c7f03f..20958267a291 100644
--- a/desktop/qa/desktop_lib/test_desktop_lib.cxx
+++ b/desktop/qa/desktop_lib/test_desktop_lib.cxx
@@ -113,6 +113,7 @@ public:
     void testCommentsImpress();
     void testCommentsCallbacksWriter();
     void testRunMacro();
+    void testExtractParameter();
 
     CPPUNIT_TEST_SUITE(DesktopLOKTest);
     CPPUNIT_TEST(testGetStyles);
@@ -153,6 +154,7 @@ public:
     CPPUNIT_TEST(testCommentsImpress);
     CPPUNIT_TEST(testCommentsCallbacksWriter);
     CPPUNIT_TEST(testRunMacro);
+    CPPUNIT_TEST(testExtractParameter);
     CPPUNIT_TEST_SUITE_END();
 
     uno::Reference<lang::XComponent> mxComponent;
@@ -2160,6 +2162,34 @@ void DesktopLOKTest::testRunMacro()
     CPPUNIT_ASSERT(!bNonExistentMacro);
 }
 
+void DesktopLOKTest::testExtractParameter()
+{
+    OUString aOptions("Language=de-DE");
+    OUString aValue = extractParameter(aOptions, "Language");
+    CPPUNIT_ASSERT_EQUAL(OUString("de-DE"), aValue);
+    CPPUNIT_ASSERT_EQUAL(OUString(), aOptions);
+
+    aOptions = "Language=en-US,Something";
+    aValue = extractParameter(aOptions, "Language");
+    CPPUNIT_ASSERT_EQUAL(OUString("en-US"), aValue);
+    CPPUNIT_ASSERT_EQUAL(OUString("Something"), aOptions);
+
+    aOptions = "SomethingElse,Language=cs-CZ";
+    aValue = extractParameter(aOptions, "Language");
+    CPPUNIT_ASSERT_EQUAL(OUString("cs-CZ"), aValue);
+    CPPUNIT_ASSERT_EQUAL(OUString("SomethingElse"), aOptions);
+
+    aOptions = "Something1,Language=hu-HU,Something2";
+    aValue = extractParameter(aOptions, "Language");
+    CPPUNIT_ASSERT_EQUAL(OUString("hu-HU"), aValue);
+    CPPUNIT_ASSERT_EQUAL(OUString("Something1,Something2"), aOptions);
+
+    aOptions = "Something1,Something2=blah,Something3";
+    aValue = extractParameter(aOptions, "Language");
+    CPPUNIT_ASSERT_EQUAL(OUString(), aValue);
+    CPPUNIT_ASSERT_EQUAL(OUString("Something1,Something2=blah,Something3"), aOptions);
+}
+
 CPPUNIT_TEST_SUITE_REGISTRATION(DesktopLOKTest);
 
 CPPUNIT_PLUGIN_IMPLEMENT();
diff --git a/desktop/source/lib/init.cxx b/desktop/source/lib/init.cxx
index 3500d2b7673e..9fcea7a1c5a5 100644
--- a/desktop/source/lib/init.cxx
+++ b/desktop/source/lib/init.cxx
@@ -472,6 +472,50 @@ int lcl_getViewId(const std::string& payload)
 
 }  // end anonymous namespace
 
+// Could be anonymous in principle, but for the unit testing purposes, we
+// declare it in init.hxx.
+OUString desktop::extractParameter(OUString& rOptions, const OUString& rName)
+{
+    OUString aValue;
+
+    OUString aNameEquals(rName + "=");
+    OUString aCommaNameEquals("," + rName + "=");
+
+    int nIndex = -1;
+    if (rOptions.startsWith(aNameEquals))
+    {
+        size_t nLen = aNameEquals.getLength();
+        int nComma = rOptions.indexOf(",", nLen);
+        if (nComma >= 0)
+        {
+            aValue = rOptions.copy(nLen, nComma - nLen);
+            rOptions = rOptions.copy(nComma + 1);
+        }
+        else
+        {
+            aValue = rOptions.copy(nLen);
+            rOptions.clear();
+        }
+    }
+    else if ((nIndex = rOptions.indexOf(aCommaNameEquals)) >= 0)
+    {
+        size_t nLen = aCommaNameEquals.getLength();
+        int nComma = rOptions.indexOf(",", nIndex + nLen);
+        if (nComma >= 0)
+        {
+            aValue = rOptions.copy(nIndex + nLen, nComma - nIndex - nLen);
+            rOptions = rOptions.copy(0, nIndex) + rOptions.copy(nComma);
+        }
+        else
+        {
+            aValue = rOptions.copy(nIndex + nLen);
+            rOptions = rOptions.copy(0, nIndex);
+        }
+    }
+
+    return aValue;
+}
+
 extern "C"
 {
 
@@ -1164,10 +1208,24 @@ static LibreOfficeKitDocument* lo_documentLoadWithOptions(LibreOfficeKit* pThis,
 
     try
     {
+        // 'Language=...' is an option that LOK consumes by itself, and does
+        // not pass it as a parameter to the filter
+        OUString aOptions = getUString(pOptions);
+        OUString aLanguage = extractParameter(aOptions, "Language");
+
+        if (!aLanguage.isEmpty())
+        {
+            // use with care - it sets it for the entire core, not just the
+            // document
+            SvtSysLocaleOptions aSysLocaleOptions;
+            aSysLocaleOptions.SetLocaleConfigString(aLanguage);
+            aSysLocaleOptions.SetUILocaleConfigString(aLanguage);
+        }
+
         uno::Sequence<css::beans::PropertyValue> aFilterOptions(2);
         aFilterOptions[0] = css::beans::PropertyValue( OUString("FilterOptions"),
                                                        0,
-                                                       uno::makeAny(OUString::createFromAscii(pOptions)),
+                                                       uno::makeAny(aOptions),
                                                        beans::PropertyState_DIRECT_VALUE);
 
         rtl::Reference<LOKInteractionHandler> const pInteraction(
diff --git a/include/LibreOfficeKit/LibreOfficeKit.hxx b/include/LibreOfficeKit/LibreOfficeKit.hxx
index 12c042886f97..72fb7c2b3882 100644
--- a/include/LibreOfficeKit/LibreOfficeKit.hxx
+++ b/include/LibreOfficeKit/LibreOfficeKit.hxx
@@ -487,6 +487,9 @@ public:
      *
      * @param pUrl the URL of the document to load
      * @param pFilterOptions options for the import filter, e.g. SkipImages.
+     *        Another useful FilterOption is "Language=...".  It is consumed
+     *        by the documentLoad() itself, and when provided, LibreOfficeKit
+     *        switches the language accordingly first.
      * @since pFilterOptions argument added in LibreOffice 5.0
      */
     inline Document* documentLoad(const char* pUrl, const char* pFilterOptions = NULL)